CN109150460A - The method and apparatus for transmitting information - Google Patents

Abstract

The present application provides a method for transmitting information, comprising: a terminal device determining a reference signal corresponding to each candidate control channel in a plurality of candidate control channels; The reference signal corresponding to the candidate control channel receives the control information sent by the network device on the first candidate control channel; wherein, the multiple candidate control channels further include a second candidate control channel of a second aggregation level, the first candidate control channel The aggregation level is different from the second aggregation level, the first candidate control channel includes at least a first control channel element CCE, the second candidate control channel includes at least a second control channel element CCE, and the first CCE and the second CCE are in the same The number in the control channel resource set is the same, and the first CCE and the second CCE correspond to the same first reference signal, which can reduce resource overhead and help improve system performance.

Description

Method and apparatus for transmitting information

technical field

The embodiments of the present application relate to the field of communications, and more particularly, to methods and apparatuses for transmitting information in the field of communications.

Background technique

Existing network systems can use reference signals for channel estimation, measurement, and tracking, etc. For example, in an enhanced physical downlink control channel (enhanced physical downlink control channel, EPDCCH), one candidate control channel in the EPDCCH Multiple reference signals, but the candidate control channels of different aggregation levels form multiple candidate control channels, and there will be many reference signals in multiple candidate control channels, which will make the terminal equipment more complicated when using the reference signals, resulting in resource The overhead is also large, which in turn results in lower system performance. For example, when the terminal device uses the reference signal to demodulate the data, the complexity of the demodulated data will increase. For another example, when the terminal device uses the reference signal to perform channel estimation, the complexity of the channel estimation will be increased.

SUMMARY OF THE INVENTION

The present application provides a method for transmitting information, which can reduce resource overhead and help improve system performance.

In a first aspect, a method for transmitting information is provided, including: a terminal device determining a reference signal corresponding to each candidate control channel in a plurality of candidate control channels; The reference signal corresponding to the first candidate control channel receives the control information sent by the network device on the first candidate control channel; wherein the plurality of candidate control channels further includes a second candidate control channel of a second aggregation level, the The first candidate control channel includes at least a first control channel element CCE, the second candidate control channel includes at least a second control channel element CCE, the first CCE and the second CCE have the same number in the same control channel resource set, and the first The CCE and the second CCE correspond to the same first reference signal.

In this embodiment of the present application, the terminal device may determine the reference signal of each candidate control channel in the multiple candidate control channels. Since the first CCE and the second CCE correspond to the same first reference signal, the first candidate control channel may be The reference signal corresponding to the first CCE of the second candidate control channel is determined as the first reference signal, and the reference signal corresponding to the second CCE of the second candidate control channel is determined as the first reference signal. In this way, the terminal device can use the first reference signal to demodulate Control information on the first CCE and the second CCE, for example, the terminal device can use the first reference signal to perform channel estimation on the first CCE of the first candidate control channel to obtain a first estimated value, and the terminal device determines the first estimated value is the channel estimation value of the second CCE of the second candidate control channel. In this way, it is possible to avoid the second CCE of the second candidate control channel from performing channel estimation again, which can save resource overhead, improve resource utilization, and further improve system performance. .

Optionally, the first aggregation level and the second aggregation level are determined or defined by the number of control channel elements CCEs.

Optionally, the first aggregation level is different from the second aggregation level.

Optionally, the multiple candidate control channels further include a third candidate control channel and a fourth candidate control channel, the third candidate control channel includes a second reference signal corresponding to a third CCE, and the fourth candidate control channel includes The fourth CCE of is corresponding to a third reference signal, and the second reference signal is different from the third reference signal.

Optionally, the terminal device may use the control information to transmit data.

Optionally, the plurality of candidate control channels include candidate control channels of multiple aggregation levels, the candidate control channels of one aggregation level are part of the candidate control channels of the plurality of candidate control channels, and one aggregation level corresponds to one search space, and then there are multiple candidate control channels. Each aggregation level corresponds to multiple search spaces.

Optionally, the multiple search spaces may be multiple common search spaces (common search spaces, CSS), the multiple search spaces may be multiple dedicated search space search spaces (UE search spaces, USS), the The multiple search spaces may also include at least one CSS and at least one USS, which is not limited in this embodiment of the present application.

In some implementations, the set of CCEs included in the first candidate control channel is a subset of the set of CCEs included in the second candidate control channel, and the first candidate control channel and the second candidate control channel include All the CCEs of the CCE correspond to the same first reference signal; wherein, the terminal device determining the reference signal corresponding to each candidate control channel in the multiple candidate control channels includes: the terminal device determining the first reference signal is the reference signal of the first candidate control channel and the second candidate control channel.

In this embodiment of the present application, if the CCE set of one candidate control channel is a subset of the CCE set of another candidate control channel, the reference signals corresponding to the two candidate control channels are the same.

Optionally, the elements in the CCE set included in the first candidate control channel are elements in the first control channel resource set; the elements in the CCE set included in the second candidate control channel are the second control channel resource set , the first control channel resource set and the second control channel resource set are the same resource set.

In some implementations, the set of CCEs included in the first candidate control channel is a subset of the set of CCEs included in the second candidate control channel, and the second candidate control channel, in addition to the first candidate control channel, includes The CCEs other than the CCE used in the CCE use a fourth reference signal, and the first reference signal is different from the fourth reference signal; wherein, the terminal device determines the reference signal corresponding to each candidate control channel in the plurality of candidate control channels, including : the terminal device determines the first reference signal as the reference signal of the first candidate control channel; the terminal device determines the first reference signal and the fourth reference signal as the second candidate Reference signal for the control channel.

In the embodiment of the present application, if there are the same CCEs in the two candidate control channels, the CCEs in the same part correspond to the same reference signals, and the reference signals corresponding to the CCEs in different parts may be different.

In some implementations, the third candidate control channel and the fourth candidate control channel have the same aggregation level, and the ith candidate control channel element included in the third candidate control channel is the same as the fourth candidate control channel. The i-th candidate control channel element included in the control channel uses different reference signals, i is an integer greater than or equal to 0 and less than n, and n is a candidate control channel included in the third candidate control channel or the fourth candidate control channel number of units.

In the embodiment of the present application, the reference signals corresponding to the CCEs at the corresponding positions of different candidate control channels with the same aggregation level are different, which can improve the randomness of the reference signals, and can reduce the sampling of the same as other terminal equipments at the corresponding CCE positions. The interference caused by the reference signal can improve the reliability of the system. In some implementations, the third candidate control channel and the fourth candidate control channel have the lowest aggregation level.

In some implementations, the third candidate control channel and the fourth candidate control channel have the highest aggregation level.

In some implementations, the first reference signal is a demodulation reference signal (DMRS) used to demodulate the first candidate control channel.

In some implementations, the resources of the first reference signal, the resources of the second reference signal, the resources of the third reference signal, and the resources of the fourth reference signal include time-frequency resources, codeword resources, and reference at least one of the signal sequences.

In a second aspect, a method for transmitting information is provided, comprising: a network device sending control information to a terminal device on a first candidate control channel of a first aggregation level among multiple candidate control channels; wherein the multiple candidate control channels The channel further includes a second candidate control channel of a second aggregation level, the first candidate control channel includes at least a first control channel element CCE, the second candidate control channel includes at least a second control channel element CCE, the first CCE and the second The CCEs are numbered the same in the same control channel resource set, and the first CCE and the second CCE correspond to the same first reference signal.

In this embodiment of the present application, the terminal device may determine the reference signal of each candidate control channel in the multiple candidate control channels. Since the first CCE and the second CCE correspond to the same first reference signal, the first candidate control channel may be The reference signal corresponding to the first CCE of the second candidate control channel is determined as the first reference signal, and the reference signal corresponding to the second CCE of the second candidate control channel is determined as the first reference signal. In this way, the terminal device can use the first reference signal to demodulate Control information on the first CCE and the second CCE, for example, the terminal device can use the first reference signal to perform channel estimation on the first CCE of the first candidate control channel to obtain a first estimated value, and the terminal device determines the first estimated value is the channel estimation value of the second CCE of the second candidate control channel. In this way, it is possible to avoid the second CCE of the second candidate control channel from performing channel estimation again, which can save resource overhead, improve resource utilization, and further improve system performance. .

Optionally, the first aggregation level and the second aggregation level are determined or defined by the number of control channel elements CCEs.

Optionally, the first aggregation level is different from the second aggregation level.

Optionally, the multiple candidate control channels further include a third candidate control channel and a fourth candidate control channel, the third candidate control channel includes a second reference signal corresponding to a third CCE, and the fourth candidate control channel includes The fourth CCE of is corresponding to a third reference signal, and the second reference signal is different from the third reference signal.

Optionally, the network device may transmit data with the terminal device according to the control information, for example, send downlink data according to the control information, or receive uplink data sent by the terminal device according to the control information.

Optionally, the multiple candidate control channels include candidate control channels of multiple aggregation levels, one aggregation level corresponds to one search space, and multiple aggregation levels correspond to multiple search spaces.

In some implementations, the set of CCEs included in the first candidate control channel is a subset of the set of CCEs included in the second candidate control channel, and the first candidate control channel and the second candidate control channel All the included CCEs correspond to the same first reference signal.

In some implementations, the set of CCEs included in the first candidate control channel is a subset of the set of CCEs included in the second candidate control channel, and the second candidate control channel, in addition to the first candidate control channel, includes The CCEs other than the CCEs of the CCE use a fourth reference signal, and the first reference signal is different from the fourth reference signal.

In some implementations, the third candidate control channel and the fourth candidate control channel have the same aggregation level, and the ith candidate control channel element included in the third candidate control channel is the same as the fourth candidate control channel. The i-th candidate control channel element included in the control channel uses different reference signals, i is an integer greater than or equal to 0 and less than n, and n is a candidate control channel included in the third candidate control channel or the fourth candidate control channel number of units.

In some implementations, the third candidate control channel and the fourth candidate control channel have the lowest aggregation level.

In some implementations, the third candidate control channel and the fourth candidate control channel have the highest aggregation level.

In some implementations, the first reference signal is a demodulation reference signal DMRS used to demodulate the first candidate control channel.

In some implementations, the resources of the first reference signal, the resources of the second reference signal, the resources of the third reference signal, and the resources of the fourth reference signal include time-frequency resources, codeword resources, and reference at least one of the signal sequences.

In some implementations, the plurality of aggregation levels include at least two of aggregation level 1, aggregation level 2, aggregation level 4, aggregation level 8, aggregation level 16, and aggregation level 32.

A third aspect provides a method for transmitting information, comprising: a terminal device receiving control information sent by a network device on a first candidate control channel of a first aggregation level among multiple candidate control channels; wherein the multiple candidate control channels The control channel further includes a second candidate control channel of a second aggregation level, the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, and the first candidate control channel corresponds to The first reference signal and the second reference signal are quasi co-located (QCL), the third reference signal and the fourth reference signal corresponding to the second candidate control channel are QCL, the first The QCL of the candidate control channel is derived from the QCL of the second candidate control channel.

In this embodiment of the present application, the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, that is, the second aggregation level is greater than the first aggregation level, in other words, When the set of CCEs included in the first candidate control channel of the low aggregation level is a subset of the set of CCEs included in the second candidate control channel of the high aggregation level, the QCL of the first candidate control channel and the QCL of the second candidate control channel are Similarly, the terminal device can use the second reference signal corresponding to the first candidate control channel to have a QCL assumption to perform channel estimation on the channel on the time-frequency resource where the first candidate control channel is located. When the frequency domain density of the first reference signal of the control channel is low, the second reference signal can assist the first candidate control channel to perform channel estimation, that is, the QCL parameters corresponding to the first reference signal and the second reference signal are the same, which can be improved. The utilization rate of the reference signal improves the reliability of the system.

Optionally, the first aggregation level and the second aggregation level are determined or defined by the number of control channel elements CCEs.

Optionally, the first aggregation level is smaller than the second aggregation level.

Optionally, after the terminal device receives the control information sent by the network device on the first candidate control channel of the first aggregation level among the multiple candidate control channels, the method further includes: the terminal device according to the control Information transfer data.

Optionally, the QCL parameters corresponding to the first reference signal and the second reference signal are the same, and the QCL parameters corresponding to the third reference signal and the fourth reference signal are the same.

It should be understood that, in the embodiments of the present application, the following expressions all indicate that the control information on the first candidate control channel and the control information on the second candidate control channel are sent through the same beam (beam), that is, the The reference signal on the first candidate control channel and the reference signal on the second candidate control channel are of type 3 QCL. First, the QCL of the first candidate control channel is the same as the QCL of the second candidate control channel; second, the first candidate The QCL of the control channel is derived from the QCL of the second candidate control channel; thirdly, the QCL of the first candidate control channel is determined by the QCL of the second candidate control channel.

Optionally, the multiple candidate control channels include candidate control channels of multiple aggregation levels, one aggregation level corresponds to one search space, and multiple aggregation levels correspond to multiple search spaces.

Optionally, the multiple search spaces may be multiple CSSs, the multiple search spaces may be multiple USSs, and the multiple search spaces may also include at least one CSS and at least one USS. This is not limited.

Optionally, the second reference signal and the fourth reference signal are downlink reference signals.

Optionally, the first reference signal and the third reference signal are the same or different.

Optionally, the QCL of the second candidate control channel may be specified by a protocol or configured by a network.

In some implementations, when the second reference signal is the same as the fourth reference signal, and the QCL of the first candidate control channel is derived from the QCL of the second candidate control channel, the first candidate control channel When the frequency domain density of a reference signal is low, the second reference signal can be used to perform channel estimation on the channel on the time-frequency resource where the first candidate control channel is located. When the frequency domain density of the third reference signal of the second candidate control channel is low, The fourth reference channel may be used to perform channel estimation on the second candidate control channel. When the second reference signal and the fourth reference signal are the same, and the frequency domain densities of the first reference signal and the third reference signal are low, the terminal device may Channel estimation is performed on the channels on the time-frequency resources where the first candidate control channel and the second candidate control channel are located by using the second reference signal or the fourth reference signal, which can improve the utilization rate of the reference signal and improve the reliability of the system.

In some implementation manners, before the terminal device receives the control information sent by the network device on the first candidate control channel of the first aggregation level among the plurality of candidate control channels, the method further includes: the terminal device The device receives the configuration information sent by the network device, where the configuration information is used to indicate the QCL of the second candidate control channel; the terminal device determines the QCL of the second candidate control channel according to the configuration information; the terminal device determines the QCL of the second candidate control channel according to the configuration information; The QCL of the first candidate control channel is determined according to the QCL of the second candidate control channel.

In some implementations, the second reference signal or the fourth reference signal is a broadcast channel reference signal, a phase tracking reference signal (PT-RS), or a tracking reference signal (TRS) ), demodulation reference signal of physical downlink shared channel (PDSCH), common reference signal (CRS), channel state information reference signal (CSI-RS) or synchronization signal at least one of.

In a fourth aspect, a method for transmitting information is provided, comprising: a network device sending control information to a terminal device on a first candidate control channel of a first aggregation level among multiple candidate control channels;

The plurality of candidate control channels further include second candidate control channels of a second aggregation level, the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, and the The first reference signal and the second reference signal corresponding to the first candidate control channel are QCL, the third and fourth reference signals corresponding to the second candidate control channel are QCL, and the first candidate control channel The QCL of is derived from the QCL of the second candidate control channel.

In this embodiment of the present application, the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, that is, the second aggregation level is greater than the first aggregation level, in other words, When the set of CCEs included in the first candidate control channel of the low aggregation level is a subset of the set of CCEs included in the second candidate control channel of the high aggregation level, the QCL of the first candidate control channel and the QCL of the second candidate control channel are Similarly, the terminal device can use the first reference signal corresponding to the first candidate control channel to perform channel estimation on the first candidate control channel of the channel on the time-frequency resource using the second reference signal for which the QCL hypothesis exists. In this way, when the first candidate control channel is When the frequency domain density of the first reference signal of the control channel is low, the second reference signal can assist the first candidate control channel to perform channel estimation, that is, the QCL parameters corresponding to the first reference signal and the second reference signal are the same, which can be improved. The utilization rate of the reference signal improves the reliability of the system.

Optionally, the first aggregation level and the second aggregation level are determined or defined by the number of control channel elements CCEs.

Optionally, the first aggregation level is smaller than the second aggregation level.

Optionally, before the network device sends the control information to the terminal device on the first candidate control channel of the first aggregation level among the multiple candidate control channels, the method further includes: the network device determines the control information .

Optionally, the QCL parameters corresponding to the first reference signal and the second reference signal are the same, and the QCL parameters corresponding to the third reference signal and the fourth reference signal are the same.

In some implementations, the second reference signal is the same as the fourth reference signal.

In some implementations, the network device sends configuration information to the terminal device, where the configuration information is used to indicate the QCL of the second candidate control channel.

In some implementations, the second reference signal or the fourth reference signal is a broadcast channel reference signal, a phase tracking reference signal PT-RS, a tracking reference signal T-RS, a PDSCH demodulation reference signal, and a common reference signal At least one of a signal CRS, a channel state information reference signal CSI-RS or a synchronization signal.

In a fifth aspect, a method for transmitting information is provided, comprising: a terminal device determining a reference signal of each candidate control channel in a plurality of search spaces; the terminal device receiving on at least one control channel of the plurality of search spaces the control information sent by the network device; the terminal device demodulates the control information according to the reference signal of the at least one control channel to obtain the demodulated control information; The adjusted control information and the network device transmit information; wherein, the multiple candidate control channels include a third candidate control channel and a fourth candidate control channel, the third candidate control channel and the fourth candidate control channel The aggregation level of the control channels is the same, and the i-th candidate control channel element included in the third candidate control channel and the i-th candidate control channel element included in the fourth candidate control channel correspond to different reference signals, where i is An integer greater than or equal to 0 and less than n, where n is the number of candidate control channel units included in the third candidate control channel or the fourth candidate control channel.

Optionally, multiple search spaces correspond to multiple aggregation levels, for example, three search spaces correspond to three aggregation levels.

In the embodiment of the present application, the reference signals corresponding to the CCEs at the corresponding positions of different candidate control channels with the same aggregation level are different, which can improve the randomness of the reference signals, and can reduce the sampling of the same as other terminal equipments at the corresponding CCE positions. The interference caused by the reference signal can improve the reliability of the system.

Optionally, CCEs of candidate control channels under the same aggregation level are orthogonal to each other

For example, the third candidate control channel and the fourth candidate control channel are candidate control channels whose aggregation level is 8. It is assumed that the third candidate control channel includes 8 CCEs arranged in sequence, namely CCE0, CCE1, CCE2, CCE3, CCE4 , CCE5, CCE6, CCE7, the fourth candidate control channel includes 8 CCEs arranged in sequence, namely CCE8, CCE9, CCE10, CCE11, CCE12, CCE13, CCE14, CCE15, the third candidate control channel The reference signals corresponding to CCE0 and CCE7 of the fourth channel are different, or the reference signals corresponding to CCE2 of the third candidate channel and CCE10 of the fourth candidate control channel are different, or the CCE7 of the third candidate channel and the fourth candidate control channel are different. The reference signals corresponding to the CCE15 of the channel are different, that is, as long as the reference signals corresponding to at least one position in the 8 positions are different, the randomization degree can be improved.

Specifically, the ith candidate control channel element included in the third candidate control channel corresponds to the fifth reference signal, the ith candidate control channel element included in the fourth candidate control channel corresponds to the sixth reference signal, and the The fifth reference signal is different from the sixth reference signal, the fifth reference signal and the sixth reference signal are DMRS, or the fifth reference signal and the sixth reference signal are channel state information reference signals CSI-RS.

In a sixth aspect, a method for transmitting information is provided, including: a network device sends control information to a terminal device on at least one control channel in multiple search spaces; the network device communicates with the terminal device according to the control information transmission information; wherein the multiple candidate control channels include a third candidate control channel and a fourth candidate control channel, the third candidate control channel and the fourth candidate control channel have the same aggregation level, and the third candidate control channel has the same aggregation level as the fourth candidate control channel. The i-th candidate control channel element included in the control channel and the i-th candidate control channel element included in the fourth candidate control channel correspond to different reference signals, where i is an integer greater than or equal to 0 and less than n, and n is the The number of candidate control channel elements included in the third candidate control channel or the fourth candidate control channel.

In a seventh aspect, an apparatus for transmitting information is provided, which is used to execute the method in the first aspect or any possible implementation manner of the first aspect. Specifically, the apparatus includes a unit for performing the method in the above-mentioned first aspect or any possible implementation manner of the first aspect.

In an eighth aspect, an apparatus for transmitting information is provided, which is used to execute the method in the second aspect or any possible implementation manner of the second aspect. Specifically, the apparatus includes means for performing the method in the above-mentioned second aspect or any possible implementation manner of the second aspect.

In a ninth aspect, a system for transmitting information is provided, including the apparatus in the fifth aspect or any optional implementation manner thereof and the apparatus in the sixth aspect or any optional implementation manner thereof.

In a tenth aspect, an apparatus for transmitting information is provided, which is used to execute the method in the third aspect or any possible implementation manner of the third aspect. Specifically, the apparatus includes a unit for performing the method in the above third aspect or any possible implementation manner of the third aspect.

In an eleventh aspect, an apparatus for transmitting information is provided, which is used to execute the method in the above-mentioned fourth aspect or any possible implementation manner of the fourth aspect. Specifically, the apparatus includes a unit for performing the method in the above-mentioned fourth aspect or any possible implementation manner of the fourth aspect.

A twelfth aspect provides a system for transmitting information, including the apparatus of the tenth aspect or any optional implementation manner thereof and the apparatus of the eleventh aspect or any optional implementation manner thereof.

A thirteenth aspect provides an apparatus for transmitting information, which is used to execute the method in the fifth aspect or any possible implementation manner of the fifth aspect. Specifically, the apparatus includes a unit for performing the method in the above fifth aspect or any possible implementation manner of the fifth aspect.

A fourteenth aspect provides an apparatus for transmitting information, which is used to execute the method in the sixth aspect or any possible implementation manner of the sixth aspect. Specifically, the apparatus includes a unit for performing the method in the above sixth aspect or any possible implementation manner of the sixth aspect.

A fifteenth aspect provides a system for transmitting information, including the apparatus of the thirteenth aspect or any optional implementation manner thereof and the apparatus of the fourteenth aspect or any optional implementation manner thereof.

A sixteenth aspect provides an apparatus for transmitting information, the apparatus comprising: a transceiver, a memory and a processor. The transceiver, the memory and the processor communicate with each other through an internal connection path, the memory is used for storing instructions, and the processor is used for executing the instructions stored in the memory to control the receiver to receive signals and control the transmitter to send signals , and when the processor executes the instructions stored in the memory, the execution causes the processor to execute the method of the first aspect or any possible implementation of the first aspect.

A seventeenth aspect provides an apparatus for transmitting information, the apparatus comprising: a transceiver, a memory and a processor. The transceiver, the memory and the processor communicate with each other through an internal connection path, the memory is used for storing instructions, and the processor is used for executing the instructions stored in the memory to control the receiver to receive signals and control the transmitter to send signals , and when the processor executes the instructions stored in the memory, the execution causes the processor to perform the method of the second aspect or any possible implementation of the second aspect.

An eighteenth aspect provides an apparatus for transmitting information, the apparatus comprising: a transceiver, a memory and a processor. The transceiver, the memory and the processor communicate with each other through an internal connection path, the memory is used for storing instructions, and the processor is used for executing the instructions stored in the memory to control the receiver to receive signals and control the transmitter to send signals , and when the processor executes the instructions stored in the memory, the execution causes the processor to execute the method in the third aspect or any possible implementation manner of the third aspect.

A nineteenth aspect provides an apparatus for transmitting information, the apparatus comprising: a transceiver, a memory and a processor. The transceiver, the memory and the processor communicate with each other through an internal connection path, the memory is used for storing instructions, and the processor is used for executing the instructions stored in the memory to control the receiver to receive signals and control the transmitter to send signals , and when the processor executes the instructions stored in the memory, the execution causes the processor to execute the method in the fourth aspect or any possible implementation manner of the fourth aspect.

A twentieth aspect provides an apparatus for transmitting information, the apparatus comprising: a transceiver, a memory and a processor. The transceiver, the memory and the processor communicate with each other through an internal connection path, the memory is used for storing instructions, and the processor is used for executing the instructions stored in the memory to control the receiver to receive signals and control the transmitter to send signals , and when the processor executes the instructions stored in the memory, the execution causes the processor to execute the method in the fifth aspect or any possible implementation manner of the fifth aspect.

A twenty-first aspect provides an apparatus for transmitting information, the apparatus comprising: a transceiver, a memory and a processor. The transceiver, the memory and the processor communicate with each other through an internal connection path, the memory is used for storing instructions, and the processor is used for executing the instructions stored in the memory to control the receiver to receive signals and control the transmitter to send signals , and when the processor executes the instructions stored in the memory, the execution causes the processor to execute the method in the sixth aspect or any possible implementation manner of the sixth aspect.

A twenty-second aspect provides a computer-readable storage medium having instructions stored in the computer-readable storage medium, which, when executed on a computer, cause the computer to perform the first aspect or any possibility of the first aspect method in the implementation.

A twenty-third aspect provides a computer-readable storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform any possible implementation of the second aspect or the second aspect method in the implementation.

A twenty-fourth aspect provides a computer-readable storage medium having instructions stored in the computer-readable storage medium, which, when executed on a computer, cause the computer to perform the third aspect or any possibility of the third aspect method in the implementation.

A twenty-fifth aspect provides a computer-readable storage medium having instructions stored in the computer-readable storage medium, which, when executed on a computer, cause the computer to perform any possible implementation of the fourth aspect or the fourth aspect method in the implementation.

In a twenty-sixth aspect, a computer-readable storage medium is provided, the computer-readable storage medium has instructions stored therein, which, when executed on a computer, cause the computer to perform any possibility of the fifth aspect or the fifth aspect. method in the implementation.

In a twenty-seventh aspect, a computer-readable storage medium is provided, the computer-readable storage medium having instructions stored therein, which, when executed on a computer, cause the computer to perform any possible implementation of the sixth aspect or the sixth aspect. method in the implementation.

Description of drawings

FIG. 1 shows a schematic diagram of a communication system to which an embodiment of the present application is applied.

FIG. 2 shows a schematic diagram of a candidate control channel according to an embodiment of the present application.

FIG. 3 shows a schematic diagram of a method for transmitting information according to an embodiment of the present application.

FIG. 4 shows a schematic diagram of another candidate control channel according to an embodiment of the present application.

FIG. 5 shows a schematic diagram of resources of reference signals according to an embodiment of the present application.

FIG. 6 shows a schematic diagram of resources of reference signals according to an embodiment of the present application.

FIG. 7 shows a schematic diagram of another method for transmitting information according to an embodiment of the present application.

FIG. 8 shows a schematic diagram of another candidate control channel according to an embodiment of the present application.

FIG. 9 shows a schematic diagram of an apparatus for transmitting information according to an embodiment of the present application.

FIG. 10 shows a schematic diagram of another apparatus for transmitting information according to an embodiment of the present application.

FIG. 11 shows a schematic diagram of another apparatus for transmitting information according to an embodiment of the present application.

FIG. 12 shows a schematic diagram of another apparatus for transmitting information according to an embodiment of the present application.

FIG. 13 shows a schematic diagram of another apparatus for transmitting information according to an embodiment of the present application.

FIG. 14 shows a schematic diagram of another apparatus for transmitting information according to an embodiment of the present application.

FIG. 15 shows a schematic diagram of another apparatus for transmitting information according to an embodiment of the present application.

FIG. 16 shows a schematic diagram of another apparatus for transmitting information according to an embodiment of the present application.

Detailed ways

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

It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, for example, a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division Multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, wireless local area network (WLAN) Or the future fifth generation wireless communication system (the fifth Generation, 5G) and so on.

FIG. 1 shows a communication system 100 to which an embodiment of the present application is applied. The communication system 100 may include a terminal device 110, and the terminal device 110 may refer to an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or user device. The access terminal may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in 5G networks, etc.

The network device 120 may be a network-side device that performs wireless communication with the terminal device 110, for example, a wireless-fidelity (Wi-Fi) access point, a base station for next-generation communication, such as a 5G gNB or A small station, a micro station, a transmission reception point (TRP), can also be a base station in 2G, 3G and 4G, and can also be a relay station, an access point, a vehicle-mounted device, a wearable device, and the like.

It should be understood that there may be one or more terminal devices 110 , and only one terminal device is used as an example for description in this embodiment of the present application.

The terms used in the embodiments of the present application are explained below:

Symbols, including but not limited to orthogonal frequency division multiplexing (OFDM) symbols, sparse code multiplexing access (SCMA) symbols, filtered orthogonal frequency division multiplexing (filtered orthogonal frequency division multiplexing) , F-OFDM) symbol, non-orthogonal multiple access (non-orthogonal Multiple Access, NOMA) symbol, the specific can be determined according to the actual situation, and will not be repeated here.

Subcarrier width, the smallest granularity in the frequency domain. For example, in LTE, the subcarrier width of a subcarrier is 15kHz; in 5G, a subcarrier width may be 15kHz, 30kHz, or 60kHz.

A physical resource block (physical resource block, PRB) is P consecutive subcarriers occupied in the frequency domain, and the resources occupied in the time domain are consecutive Q OFDM symbols. where P and Q are natural numbers greater than 1. For example, one physical resource block may occupy 12 consecutive subcarriers in the frequency domain and 7 consecutive OFDM symbols in the time domain, where P=12, Q=7; or, P=12, Q=14 .

The resource element group (resource element group, REG) is P consecutive subcarriers occupied in the frequency domain, and the resources occupied in the time domain are consecutive Q OFDM symbols. where P is a natural number greater than 1. For example, one resource unit group may occupy 12 consecutive subcarriers in the frequency domain, and may occupy 1 OFDM symbol in the time domain, where P=12 and Q=1.

A candidate control channel element (control channel element, CCE), one candidate control channel element corresponds to multiple resource element groups, and the number of resource element groups corresponding to one candidate control channel element is fixed, for example, 4 or 6. One candidate control channel consists of one or more CCEs, and one CCE consists of one or more REGs.

A set of candidate control channel resources, including time-frequency resources of at least one search space, for example, including an integer number of physical resource blocks in the frequency domain (consecutive or discrete in the frequency domain), and including one or more consecutive physical resource blocks in the time domain OFDM symbols, eg, 1, or 2, or 3 OFDM symbols.

Aggregation level, the number of candidate control channel units included in the candidate control channel, that is, if the number of candidate control channel units included in the candidate control channel is L, where L is a positive integer greater than or equal to 1, also called the candidate control channel The aggregation level of is L.

A search space, a set of one or more candidate control channels with the same aggregation level L, is called a search space and can be denoted as S(L).

The terminal device needs to obtain the reference signal corresponding to the downlink candidate control channel before acquiring the downlink control information; the terminal device can use the reference signal to demodulate the downlink candidate control channel, and optionally, the terminal device can use the reference signal to estimate where the downlink candidate control channel is located The channel estimation value of the channel state on the time-frequency resource, the terminal device can use the channel estimation value to demodulate the downlink control information; or the terminal device can use the reference signal to track or measure, etc. The effects of the embodiments of the present application on the reference signal are not Without any limitation.

In the prior art, for example, in the EPDCCH of the LTE system, the reference signal is not mapped on the resource element to which the control information is mapped, that is, the time-frequency resources occupied by the control information and the reference signal do not overlap; however, the reference signal used for demodulating the EPDCCH It is only mapped on the PRB that bears the EPDCCH, that is, the reference signal is not mapped to the PRB that does not bear the EPDCCH, which can save resource overhead. For example, in EPDCCH, the corresponding relationship between reference signals and candidate control channels is shown in Figure 2. In Figure 2, {107, 108, 109, 110} represent the numbers of four antenna ports, one antenna port corresponds to one reference signal, and four antenna ports correspond to four antenna ports. For the purpose of describing aspects below, the reference signals are represented by the numbers of the antenna ports. Figure 2 includes a total of 8 CCEs: CCE0, CCE1, CCE2, CCE3, CCE4, CCE5, CCE6 and CCE7, CCE0, CCE1, CCE2 and CCE3 form a PRB, CCE4, CCE5, CCE6 and CCE7 form a PRB, for the aggregation level is a candidate control channel of 1, 8 CCEs correspond to 8 candidate control channels respectively, and the reference signals of the 8 candidate control channels are 107, 108, 109, 110, 107, 108, 109, 110 respectively; for the candidate control channel of aggregation level 2, 8 CCEs correspond to 4 candidate control channels, The CCEs of the first candidate control channel are CCE0 and CCE1, the reference signal of the first candidate control channel is 107, the CCEs of the second candidate control channel are CCE2 and CCE3, the reference signal of the second candidate control channel is 109, The CCEs of the third candidate control channel are CCE4 and CCE5, the reference signal of the third candidate control channel is 107, the CCEs of the fourth candidate control channel are CCE6 and CCE7, and the reference signal of the fourth candidate control channel is 109; for example , in Figure 2, the CCE occupied by the first candidate control channel and the second candidate control channel of aggregation level 1 and the first candidate control channel of aggregation level 2 are the same, they are both CCE0 and CCE1, but the aggregation level The reference signals of the first candidate control channel of 1 and the second candidate control channel are 107 and 108, and the reference signal of the first candidate control channel of aggregation level 2 is 107. When the terminal equipment uses the reference signal for channel estimation, When the terminal device needs to use the reference signal 107 to perform channel estimation on the first candidate control channel of aggregation level 1, it uses the reference signal 108 to perform channel estimation on the second candidate control channel of aggregation level 1, that is, the candidate control channels with overlapping resources correspond to The reference signals are different, so multiple channel estimations are required, which increases the complexity of channel estimation. In practical applications, the channel estimation values obtained by the channels occupying the same time-frequency resources are the same. In this embodiment of the present application, the reference signals corresponding to the overlapping CCEs can be designed to be the same, so that the channel estimation values of the reference signals can be multiplexed to reduce the complexity of the channel estimation. For example, the second candidate of aggregation level 1 in FIG. 2 The reference signal of the control channel is also 107. In this way, the first candidate control channel of aggregation level 1 and the second candidate control channel of aggregation level 1 can use the channel estimation value of the first candidate control channel of aggregation level 2 when performing channel estimation, The resource overhead caused by this channel estimation can be avoided. Optionally, in this embodiment of the present application, the 8 CCEs in FIG. 2 all overlap with the CCEs occupied by the candidate control channel whose aggregation level is 8, and the reference signal corresponding to the candidate control channel whose aggregation level is 8 is 107. The reference signals of all candidate control channels corresponding to FIG. 2 are set to 107 .

Optionally, the resource of the reference signal in the embodiment of the present application is at least one of a time-frequency resource, a reference signal sequence, and a codeword resource.

In this embodiment of the present application, the network device or the terminal device first needs to determine the time-frequency resources occupied by the candidate control channels included in each search space in the multiple search spaces, and then the network device needs to determine the time-frequency resources occupied by the candidate control channels on the time-frequency resources occupied by the candidate control channels. The control information is sent, or the terminal device receives the control information on the time-frequency resources occupied by the candidate control channel. The following specifically describes how the network device or the terminal device determines the time-frequency resources occupied by the candidate control channels included in each of the multiple search spaces. Here, the time-frequency resources occupied by the candidate control channels are described in units of CCEs. Specifically, the terminal device may determine the time-frequency resources occupied by the candidate control channels included in each of the multiple search spaces according to a method specified with the network device, or the network device may indicate to the terminal device each of the multiple search spaces. Time-frequency resources occupied by candidate control channels included in the search space.

Assuming that the number of CCEs included in the candidate control channel resource set is N, and the number of CCEs is {0, 1, 2, 3, ···, N-1}, for the candidate control channel whose aggregation level is 1, we can In the candidate control channel resource set, a CCE is selected as the resource of the candidate control channel according to the set rule. The set rule can make the CCEs corresponding to different candidate control channels under the same aggregation level orthogonal, that is, the same The time-frequency resources of different candidate control channels of the aggregation level do not have overlapping parts. For a candidate control channel whose aggregation level is 2, the number of CCEs included in each candidate control channel is 2, then each candidate control channel includes two consecutive CCEs in the candidate control channel set, and one of the CCEs is numbered M, And satisfy M mod 2=0, mod is the remainder operation. For a candidate control channel whose aggregation level is 3, the number of CCEs included in each candidate control channel is 3, then each candidate control channel includes three consecutive CCEs in the candidate control channel set, and one of the CCEs is numbered N, And N mod 3=0 is satisfied. By analogy, the CCE number of the candidate control channel included in each aggregation level can be determined according to the above method.

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

FIG. 3 shows a method 200 for transmitting information according to an embodiment of the present application. The method 200 may be applied to the communication system 100 shown in FIG. 1 , but the embodiment of the present application is not limited thereto.

S210: The terminal device determines a reference signal corresponding to each candidate control channel in the multiple candidate control channels.

It should be understood that each candidate control channel may be composed of at least one CCE, and a CCE may be composed of one or more REGs, and the time-frequency resources of at least one of the one or more REGs carry reference signals, that is, one CCE corresponds to At least one reference signal, that is, one candidate control channel corresponds to at least one reference signal.

S220: The network device sends control information to the terminal device on the first candidate control channel of the first aggregation level among the multiple candidate control channels, and the terminal device controls the first candidate control channel on the first candidate control channel according to the reference signal corresponding to the first candidate control channel. The control information sent by the network device is received on the channel; wherein, the multiple candidate control channels further include a second candidate control channel of a second aggregation level, and the first aggregation level and the second aggregation level are determined by the number of control channel units CCEs It is determined or defined that the first aggregation level is different from the second aggregation level, the first candidate control channel includes at least a first control channel element CCE, the second candidate control channel includes at least a second control channel element CCE, and the first control channel candidate includes at least a first control channel element CCE. A CCE and a second CCE have the same number in the same control channel resource set, and the first CCE and the second CCE correspond to the same first reference signal, and the plurality of candidate control channels further include a third candidate control channel and a fourth candidate control channel, the third candidate control channel includes a third CCE corresponding to a second reference signal, the fourth CCE included in the fourth candidate control channel corresponds to a third reference signal, and the second reference signal is the same as the second reference signal. The third reference signal is different.

It should be understood that the second reference signal corresponding to the third CCE is different from the third reference signal corresponding to the fourth CCE, that is, the reference signals corresponding to the third control channel and the fourth control channel are different. The same CCE, the same reference signal corresponding to the same CCE, however, there is at least one difference in the reference signal corresponding to the candidate control channel without the same CCE, the third candidate control channel and the fourth candidate control channel can be the same aggregation The candidate control channel of the level may also be two candidate control channels that have different aggregation levels and do not have the same CCE, which is not limited in this embodiment of the present application.

It should also be understood that a control channel resource set includes multiple CCEs, and each CCE in the multiple CCEs has a unique number in the control channel resource set, that is, the first CCE and the second CCE are in the same control channel resource set. If the numbers are the same, it means that the first CCE and the second CCE are the same CCE. Optionally, two CCEs with the same CCE number are mapped to the REG, and the time-frequency resources where the REG is located are also the same, that is, the first CCE is the same CCE. The time-frequency resources corresponding to the CCE and the second CCE are the same. The time-frequency resource corresponding to one CCE may be one or more REGs, and at least one of the one or more REGs corresponds to a reference signal, that is, the aforementioned first CCE Corresponding to the same first reference signal as the second CCE, the first reference signal may be one reference signal or multiple reference signals.

As an optional embodiment, the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, and the first candidate control channel and the second candidate control channel include All the CCEs of the CCE correspond to the same first reference signal; wherein, S210 includes: determining, by the terminal device, the first reference signal as the reference signal of the first candidate control channel and the second candidate control channel . As an optional embodiment, the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, and the second candidate control channel, in addition to the first candidate control channel, includes The CCEs other than the CCEs of the CCE use a fourth reference signal, and the first reference signal is different from the fourth reference signal; wherein, S210 includes: the terminal device determines the first reference signal as the first candidate a reference signal of a control channel; the terminal device determines the first reference signal and the fourth reference signal as the reference signal of the second candidate control channel.

Specifically, when the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, the first candidate control channel representing the low aggregation level is nested in the second candidate control channel of the high aggregation level Among the candidate control channels, there are two ways to determine the reference signal corresponding to the second candidate control channel. In the first method, the reference signal corresponding to the second candidate control channel of the high aggregation level is determined by the first candidate control channel of the low aggregation level. The reference signal is derived, for example, that is, the candidate control channels of aggregation level 1, the candidate control channels of aggregation level 2, and the candidate control channels of aggregation level 4 in FIG. 2 all overlap with the CCEs occupied by the candidate control channels of aggregation level 8, The reference signal corresponding to the candidate control channel whose aggregation level is 8 is 107, and the reference signals of all the candidate control channels corresponding to FIG. 2 can be set to 107; The overlapping part of the first candidate control channel of the aggregation level adopts the same reference signal, and the second candidate control channel of the high aggregation level also includes the CCE part that does not overlap with the first candidate control channel of the low aggregation level, and also has the same reference signal as the first candidate control channel of the low aggregation level. For CCEs with different channels, the reference signals of these non-overlapping CCE parts are not limited, for example, it may be a fourth reference signal different from the first reference signal, and the fourth reference signal may be one or more reference signals.

As an optional embodiment, the aggregation level of the third candidate control channel and the fourth candidate control channel is the same, and the ith candidate control channel element included in the third candidate control channel is the same as the fourth candidate control channel. The i-th candidate control channel element included in the control channel uses different reference signals, i is an integer greater than or equal to 0 and less than n, and n is a candidate control channel included in the third candidate control channel or the fourth candidate control channel number of units.

For example, in FIG. 4 , the third candidate control channel and the fourth candidate control channel are candidate control channels whose aggregation level is 8. It is assumed that the third candidate control channel includes 8 CCEs arranged in order, namely CCE0, CCE1, CCE2, CCE3, CCE4, CCE5, CCE6, CCE7, the fourth candidate control channel includes 8 CCEs arranged in order, namely CCE8, CCE9, CCE10, CCE11, CCE12, CCE13, CCE14, CCE15, the n=8 , if i=0, the reference signal corresponding to the 0th CCE of the third candidate control channel, namely CCE0, is different from the reference signal corresponding to the 0th CCE of the fourth candidate control channel, that is, CCE7, or, if i=2, then The second CCE of the third candidate control channel, namely CCE2, and the second CCE of the fourth candidate control channel, namely CCE10, have different reference signals, or if i=7, the third candidate control channel has a different reference signal. The seventh CCE, that is, CCE7, and the seventh CCE of the fourth candidate control channel, that is, CCE15, have different reference signals, that is, as long as the reference signals corresponding to at least one of the eight positions are different, the randomization can be improved. Degree.

Optionally, the aggregation level of the third candidate control channel and the fourth candidate control channel is the lowest. Optionally, the aggregation level of the third candidate control channel and the fourth candidate control channel is the highest.

As an optional embodiment, the first reference signal is a demodulation reference signal DMRS used for demodulating the first candidate control channel.

As an optional embodiment, the resources of the first reference signal, the resources of the second reference signal, the resources of the third reference signal, and the resources of the fourth reference signal include time-frequency resources mapped by reference signals, code at least one of a word resource and a reference signal sequence. For example, when the above reference signal resources are time-frequency resources, one CCE may include 6 REGs, and reference signals may be mapped on at least one of the 6 REGs, and one REG consists of an OFDM symbol in the time domain and continuous in the frequency domain. For example, as shown in Figure 5, one REG includes 12 REs, wherein the 3rd RE and the 9th RE are mapped with reference signal 1, and the 2nd RE and the 8th RE are mapped with reference signals 2, that is, one REG included in one CCE can map one or more reference signals, and at least one REG among the 6 REGs included in one CCE is mapped with reference signals, that is, one CCE can correspond to one or more reference signals. When the resources of the above reference signals are codeword resources, for example, as shown in FIG. 6 , the sequences of reference signal 1 and reference signal 2 are mapped on the 3rd RE, the 4th RE, the 9th RE and the 10th RE , the codeword corresponding to reference signal 1 is {1, 1}, and the codeword corresponding to reference signal 2 is {1, -1}, so that reference signal 1 and reference signal 2 can be distinguished in codeword resources. When the resource of the above reference signal is the reference signal sequence, the reference signal sequence may be a pseudo-random sequence, for example, the pseudo-random sequence r(m) may be generated according to formula (1).

in,

c(n)=(x ₁ (n+ _NC )+x ₂ (n+ _NC ))mod2

x ₁ (n+31)=(x ₁ (n+3)+x ₁ (n))mod2

x ₂ (n+31)=(x ₂ (n+3)+x ₂ (n+2)+x ₂ (n+1)+x ₂ (n))mod2

x ₁ (0)=1, x ₁ (n)=0, n=1,2,...,30, Indicates the maximum number of downlink PRBs, And _Nc is a constant, for example, Nc=1600. c _init is a configurable parameter (which can be obtained through high-layer signaling configuration, synchronization or broadcast signal configuration, or one of predefined methods), or can be derived from the identity of the terminal device.

As an optional embodiment, the plurality of aggregation levels include at least two of aggregation level 1, aggregation level 2, aggregation level 4, aggregation level 8, aggregation level 16, and aggregation level 32, wherein aggregation level 1 represents one The candidate control channel includes one CCE, the aggregation level 2 indicates that a candidate control channel includes two CCEs, the aggregation level 4 indicates that a candidate control channel includes 4 CCEs, the aggregation level 8 indicates that a candidate control channel includes 8 CCEs, and the aggregation level 16 indicates One candidate control channel includes 16 CCEs, and aggregation level 32 indicates that one candidate control channel includes 32 CCEs.

In this embodiment of the present application, with the same CCE corresponding to the same reference signal, the terminal device can use the same reference signal to demodulate the control information on the CCE. For example, the terminal device can use the first reference signal to determine the first candidate control channel. The first CCE of the second candidate control channel performs channel estimation to obtain the first estimated value, and the terminal device determines the first estimated value as the second CCE channel estimation value of the second candidate control channel, so that the second CCE of the second candidate control channel can be avoided. Performing channel estimation once can save resource overhead, improve resource utilization, and further improve system performance.

FIG. 7 shows a method 300 for transmitting information according to an embodiment of the present application. The method 300 may be applied to the communication system 100 shown in FIG. 1 , but the embodiment of the present application is not limited thereto.

S310, the network device sends control information to the terminal device on the first candidate control channel of the first aggregation level among the multiple candidate control channels; the terminal device receives the control information on the first candidate control channel of the first aggregation level among the multiple candidate control channels Control information sent by a network device; wherein the multiple candidate control channels further include second candidate control channels of a second aggregation level, and the first aggregation level and the second aggregation level are determined by the number of control channel units CCEs Alternatively defined, the first aggregation level is smaller than the second aggregation level, the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, and the first candidate control channel The first reference signal and the second reference signal corresponding to the channel are QCL, the third reference signal and the fourth reference signal corresponding to the second candidate control channel are QCL, and the QCL of the first candidate control channel is determined by the second QCL derivation of candidate control channels.

Specifically, the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, that is, the second aggregation level is greater than the first aggregation level, in other words, when the aggregation level is low When the set of CCEs included in the first candidate control channel is a subset of the set of CCEs included in the second candidate control channel of the high aggregation level, the QCL of the first candidate control channel and the QCL of the second candidate control channel are the same, so The definition of the QCL is shown in Table 1. The terminal equipment can use the first reference signal corresponding to the first candidate control channel and the second reference signal with the QCL assumption to perform channel estimation on the channel on the time-frequency resource where the first candidate control channel is located. , in this way, when the frequency domain density of the first reference signal of the first candidate control channel is low, the second reference signal can assist the first candidate control channel in channel estimation, that is, the QCL corresponding to the first reference signal and the second reference signal The parameters are the same, which can improve the utilization of the reference signal and improve the reliability of the system.

Optionally, the QCL is the same, it may also mean that the fourth reference signal is the same as the second reference signal, or the port number of the fourth reference signal is the same as the port number of the second reference signal, Or the port number of the fourth reference signal and the resource of the second reference signal are QCL, or, the resource of the fourth reference signal and the resource of the second reference signal are QCL.

It should be understood that in this embodiment of the present application, the two reference signals are QCLs, indicating that the QCL parameters of the two reference signals for the same candidate control channel are the same. As shown in Table 1, the QCL parameters include, the channel average gain (type 1 ), channel large-scale characteristics (type 2), ie {average delay, delay spread, Doppler frequency offset, Doppler frequency spread}, or at least one of channel spatial parameters (type 3). For example, the aforementioned first control signal and the second control signal are of type 1 QCL, and the large-scale channel characteristics of the third control signal and the fourth control signal are the same.

The application scenarios of the different types of QCL are shown in Table 1.

It should be understood that, in the embodiments of the present application, the following expressions all indicate that the control information on the first candidate control channel and the control information on the second candidate control channel are sent through the same beam (beam), that is, the The reference signal on the first candidate control channel and the reference signal on the second candidate control channel are of type 3 QCL. First, the QCL of the first candidate control channel is the same as the QCL of the second candidate control channel; second, the first candidate The QCL of the control channel is derived from the QCL of the second candidate control channel; thirdly, the QCL of the first candidate control channel is determined by the QCL of the second candidate control channel. For example, as shown in FIG. 8 in the case of M beams, the M beams transmit control information on candidate control channels of 4 aggregation levels, which are aggregation level 1, aggregation level 2, aggregation level 4, and aggregation level 4, respectively. Level 8, the CCE of the first candidate control channel (assumed to be the aforementioned second candidate control channel) of aggregation level 8 includes the CCE of the first control channel of aggregated level 1 (assumed to be the aforementioned first candidate control channel), That is, the CCE set included in the first candidate control channel of aggregation level 1 is a subset of the CCE set included in the first candidate control channel of aggregation level 8, and the QCL of the first candidate control channel is determined by the QCL of the second candidate control channel. The derived representation: the control information on the first candidate control channel of aggregation level 1 and the control information on the first candidate control channel of aggregation level 8 are sent through the same beam 0 .

Specifically, the aforementioned QCL may be at least one of the three QCL types in Table 1, but this is not limited in this embodiment of the present application, and may also be other QCL types.

Table 1

It should be understood that the first reference signal in method 200 and the first reference signal in method 300 may be different reference signals, and the second reference signal in method 200 and the second reference signal in method 300 may be different reference signals, The third reference signal in method 200 and the third reference signal in method 300 may be different reference signals, and the fourth reference signal in method 200 and the fourth reference signal in method 300 may be different reference signals, which are implemented in this application. The example does not impose any restrictions on this.

The method for transmitting information according to the embodiment of the present application is described in detail above with reference to FIG. 1 to FIG. 8 , and the apparatus for transmitting information according to the embodiment of the present application will be described in detail below with reference to FIG. 9 to FIG. 16 .

FIG. 9 shows an apparatus 400 for transmitting information provided by an embodiment of the present application, and the apparatus 400 includes:

a determining unit 410, configured to determine a reference signal corresponding to each candidate control channel in the multiple candidate control channels;

A transceiver unit 420, configured to receive, on the first candidate control channel, control information sent by a network device according to a reference signal corresponding to a first candidate control channel of a first aggregation level in the plurality of candidate control channels;

The multiple candidate control channels further include second candidate control channels of a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of control channel units CCEs, and the first aggregation level Different from the second aggregation level, the first candidate control channel includes at least a first control channel element CCE, the second candidate control channel includes at least a second control channel element CCE, and the first CCE and the second CCE are in the same control channel The numbers in the resource set are the same, and the first CCE and the second CCE correspond to the same first reference signal, the plurality of candidate control channels further include a third candidate control channel and a fourth candidate control channel, the first The three candidate control channels include a third CCE corresponding to a second reference signal, the fourth CCE included in the fourth candidate control channel corresponds to a third reference signal, and the second reference signal is different from the third reference signal.

As an optional embodiment, the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, and the first candidate control channel and the second candidate control channel include All the CCEs of the corresponding to the same first reference signal;

The determining unit 410 is specifically configured to: determine the first reference signal as the reference signal of the first candidate control channel and the second candidate control channel.

As an optional embodiment, the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, and the second candidate control channel, in addition to the first candidate control channel, includes The CCEs other than the CCEs use a fourth reference signal, and the first reference signal is different from the fourth reference signal;

The determining unit 410 is further configured to:

determining the first reference signal as the reference signal of the first candidate control channel;

The first reference signal and the fourth reference signal are determined as reference signals of the second candidate control channel.

As an optional embodiment, the aggregation level of the third candidate control channel and the fourth candidate control channel is the same, and the ith candidate control channel element included in the third candidate control channel is the same as the fourth candidate control channel. The i-th candidate control channel element included in the control channel uses different reference signals, i is an integer greater than or equal to 0 and less than n, and n is a candidate control channel included in the third candidate control channel or the fourth candidate control channel number of units.

As an optional embodiment, the first reference signal is a demodulation reference signal DMRS used for demodulating the first candidate control channel.

As an optional embodiment, the resources of the first reference signal, the resources of the second reference signal, the resources of the third reference signal, and the resources of the fourth reference signal include time-frequency resources, codeword resources, and reference at least one of the signal sequences.

It should be understood that the apparatus 400 here is embodied in the form of functional units. The term "unit" as used herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (eg, a shared processor, a proprietary processor, or a group of processors) for executing one or more software or firmware programs processors, etc.) and memory, merge logic, and/or other suitable components to support the described functions. In an optional example, those skilled in the art can understand that the apparatus 400 may be specifically a terminal device in the foregoing embodiment of the method 200, and the apparatus 400 may be configured to execute various processes and/or processes corresponding to the terminal device in the foregoing embodiment of the method 200. or steps, in order to avoid repetition, details are not repeated here.

FIG. 10 shows an apparatus 500 for transmitting information provided by an embodiment of the present application. The apparatus 500 includes:

a transceiver unit 510, configured to send control information to the terminal device on the first candidate control channel of the first aggregation level in the plurality of candidate control channels;

The multiple candidate control channels further include second candidate control channels of a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of control channel units CCEs, and the first aggregation level Different from the second aggregation level, the first candidate control channel includes at least a first control channel element CCE, the second candidate control channel includes at least a second control channel element CCE, and the first CCE and the second CCE are in the same control channel The numbers in the resource set are the same, and the first CCE and the second CCE correspond to the same first reference signal, the plurality of candidate control channels further include a third candidate control channel and a fourth candidate control channel, the first The three candidate control channels include a third CCE corresponding to a second reference signal, the fourth CCE included in the fourth candidate control channel corresponds to a third reference signal, and the second reference signal is different from the third reference signal.

Optionally, the apparatus 500 further includes: a determining unit 520, configured to determine the control information before sending the control information to the terminal device on the first candidate control channel of the first aggregation level among the multiple candidate control channels.

As an optional embodiment, the set of CCEs included in the first candidate control channel is a subset of the set of CCEs included in the second candidate control channel, and the first candidate control channel and the second candidate control channel All the included CCEs correspond to the same first reference signal.

As an optional embodiment, the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, and the second candidate control channel, in addition to the first candidate control channel, includes The CCEs other than the CCEs of the CCE use a fourth reference signal, and the first reference signal is different from the fourth reference signal.

As an optional embodiment, the aggregation level of the third candidate control channel and the fourth candidate control channel is the same, and the ith candidate control channel element included in the third candidate control channel is the same as the fourth candidate control channel. The i-th candidate control channel element included in the control channel uses different reference signals, i is an integer greater than or equal to 0 and less than n, and n is a candidate control channel included in the third candidate control channel or the fourth candidate control channel number of units.

As an optional embodiment, the first reference signal is a demodulation reference signal DMRS used for demodulating the first candidate control channel.

As an optional embodiment, the resources of the first reference signal, the resources of the second reference signal, the resources of the third reference signal, and the resources of the fourth reference signal include time-frequency resources, codeword resources, and reference at least one of the signal sequences.

It should be understood that the apparatus 500 herein is embodied in the form of functional units. The term "unit" as used herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (eg, a shared processor, a proprietary processor, or a group of processors) for executing one or more software or firmware programs processors, etc.) and memory, merge logic, and/or other suitable components to support the described functions. In an optional example, those skilled in the art can understand that the apparatus 500 may be specifically the network device in the foregoing embodiment of the method 200, and the apparatus 500 may be configured to execute various processes and/or processes corresponding to the network device in the foregoing embodiment of the method 200. or steps, in order to avoid repetition, details are not repeated here.

FIG. 11 shows an apparatus 600 for transmitting information provided by an embodiment of the present application. The apparatus 600 includes:

A transceiver unit 610, configured to receive control information sent by the network device on the first candidate control channel of the first aggregation level among the multiple candidate control channels;

The multiple candidate control channels further include second candidate control channels of a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of control channel units CCEs, and the first aggregation level and the second aggregation level are determined or defined by the number of CCEs. The aggregation level is smaller than the second aggregation level, the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, and the first reference signal corresponding to the first candidate control channel The second reference signal is QCL, the third reference signal corresponding to the second candidate control channel and the fourth reference signal are quasi-co-located QCL, and the QCL of the first candidate control channel is determined by the second candidate control channel. QCL export.

As an optional embodiment, the transceiver unit 610 is further configured to:

Before receiving the control information sent by the network device on the first candidate control channel of the first aggregation level among the multiple candidate control channels, receive configuration information sent by the network device, where the configuration information is used to indicate the second candidate control channel QCL of the channel;

The apparatus 600 also includes:

A determining unit 620, configured to determine the QCL of the second candidate control channel according to the configuration information, and determine the QCL of the first candidate control channel according to the QCL of the second candidate control channel.

As an optional embodiment, the second reference signal is the same as the fourth reference signal.

As an optional embodiment, the second reference signal or the fourth reference signal is a broadcast channel reference signal, a phase tracking reference signal PT-RS, a tracking reference signal T-RS, and a demodulation reference of the physical downlink shared channel PDSCH signal, at least one of a common reference signal CRS, a channel state information reference signal CSI-RS, or a synchronization signal.

It should be understood that the apparatus 600 here is embodied in the form of functional units. The term "unit" as used herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (eg, a shared processor, a proprietary processor, or a group of processors) for executing one or more software or firmware programs processors, etc.) and memory, merge logic, and/or other suitable components to support the described functions. In an optional example, those skilled in the art can understand that the apparatus 600 may be specifically a terminal device in the foregoing embodiment of the method 300, and the apparatus 600 may be configured to execute various processes and/or processes corresponding to the terminal device in the foregoing embodiment of the method 300. or steps, in order to avoid repetition, details are not repeated here.

FIG. 12 shows an apparatus 700 for transmitting information provided by an embodiment of the present application. The apparatus 700 includes:

A transceiver unit 710, configured to send control information to the terminal device on the first candidate control channel of the first aggregation level in the plurality of candidate control channels;

The multiple candidate control channels further include second candidate control channels of a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of control channel units CCEs, and the first aggregation level and the second aggregation level are determined or defined by the number of CCEs. The aggregation level is smaller than the second aggregation level, the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, and the first reference signal corresponding to the first candidate control channel The second reference signal is QCL, the third reference signal corresponding to the second candidate control channel and the fourth reference signal are quasi-co-located QCL, and the QCL of the first candidate control channel is determined by the second candidate control channel. QCL export.

Optionally, the apparatus 700 further includes: a determining unit 720, configured to determine the control information before sending the control information to the terminal device on the first candidate control channel of the first aggregation level among the plurality of candidate control channels .

As an optional embodiment, the transceiver unit 710 is further configured to:

Send configuration information to the terminal device, where the configuration information is used to indicate the QCL of the second candidate control channel.

As an optional embodiment, the second reference signal or the fourth reference signal is a broadcast channel reference signal, a phase tracking reference signal PT-RS, a tracking reference signal T-RS, a PDSCH demodulation reference signal, and a common reference signal At least one of a signal CRS, a channel state information reference signal CSI-RS or a synchronization signal.

As an optional embodiment, the second reference signal is the same as the fourth reference signal.

It should be understood that the apparatus 700 here is embodied in the form of functional units. The term "unit" as used herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (eg, a shared processor, a proprietary processor, or a group of processors) for executing one or more software or firmware programs processors, etc.) and memory, merge logic, and/or other suitable components to support the described functions. In an optional example, those skilled in the art can understand that the apparatus 700 may be specifically a network device in the foregoing embodiment of the method 300, and the apparatus 700 may be configured to execute various processes and/or processes corresponding to the network device in the foregoing embodiment of the method 300. or steps, in order to avoid repetition, details are not repeated here.

The network equipment or terminal equipment in any one of the above-mentioned apparatus 400, apparatus 500, apparatus 600, and apparatus 700 is completely corresponding to the network equipment or terminal equipment in the method embodiment, and the corresponding step is performed by the corresponding unit. For the transceiving step, other steps except transceiving can be performed by the processing module. For the functions of specific modules, reference may be made to the corresponding method embodiments, which will not be described in detail again.

The network device and the terminal device of the above solutions have the function of implementing the corresponding steps performed by the network device and the terminal device in the above method; the function may be implemented by hardware, or by executing corresponding software in hardware. The hardware or software includes one or more modules corresponding to the above functions; for example, the sending unit can be replaced by a transmitter, the receiving unit can be replaced by a receiver, and other units, such as the determining unit, can be replaced by a processor, which can be executed separately. Transceiver operations and related processing operations in each method embodiment.

FIG. 13 shows yet another apparatus 800 for transmitting information provided by an embodiment of the present application. The apparatus 800 includes a processor 810 , a transceiver 820 and a memory 830 . The processor 810, the transceiver 820 and the memory 830 communicate with each other through an internal connection path, the memory 830 is used to store instructions, and the processor 810 is used to execute the instructions stored in the memory 830 to control the transceiver 820 to send signals and / or receive signals.

The processor 810 is configured to determine a reference signal corresponding to each candidate control channel in the plurality of candidate control channels; the transceiver 820 is configured to determine the reference signal corresponding to the first candidate control channel of the first aggregation level in the plurality of candidate control channels according to the The reference signal receives control information sent by the network device on the first candidate control channel; the plurality of candidate control channels further includes a second candidate control channel of a second aggregation level, the first aggregation level and the second aggregation level Determined or defined by the number of control channel element CCEs, the first aggregation level is different from the second aggregation level, the first candidate control channel includes at least the first control channel element CCE, and the second candidate control channel includes at least the first control channel element CCE. Two control channel elements CCE, the first CCE and the second CCE have the same number in the same control channel resource set, and the first CCE and the second CCE correspond to the same first reference signal, the multiple candidate control channels Also includes a third candidate control channel and a fourth candidate control channel, the third candidate control channel includes a third CCE corresponding to the second reference signal, the fourth CCE included in the fourth candidate control channel corresponds to the third reference signal, the The second reference signal is different from the third reference signal.

It should be understood that the apparatus 800 may be specifically a terminal device in the foregoing method 200 embodiment, and may be used to execute various steps and/or processes corresponding to the terminal device in the foregoing method 200 embodiment. Optionally, the memory 830 may include read only memory and random access memory and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 810 may be configured to execute the instructions stored in the memory, and when the processor 810 executes the instructions stored in the memory, the processor 810 is configured to execute the various steps and steps of the above-mentioned embodiment of the method 200 corresponding to the terminal device. / or process.

FIG. 14 shows yet another apparatus 900 for transmitting information provided by an embodiment of the present application. The apparatus 900 includes a processor 910 , a transceiver 920 and a memory 930 . The processor 910, the transceiver 920 and the memory 930 communicate with each other through an internal connection path, the memory 930 is used to store instructions, and the processor 910 is used to execute the instructions stored in the memory 930 to control the transceiver 920 to send signals and / or receive signals.

Wherein, the transceiver 920 is configured to send control information to the terminal device on the first candidate control channel of the first aggregation level among the multiple candidate control channels; the multiple candidate control channels also include the second candidate control channel of the second aggregation level channel, the first aggregation level and the second aggregation level are determined or defined by the number of control channel units CCEs, the first aggregation level is different from the second aggregation level, and the first candidate control channel includes at least the first A control channel element CCE, the second candidate control channel includes at least a second control channel element CCE, the first CCE and the second CCE have the same number in the same control channel resource set, and the first CCE and the second CCE correspond to the same the first reference signal, the plurality of candidate control channels further include a third candidate control channel and a fourth candidate control channel, the third candidate control channel includes a third CCE corresponding to the second reference signal, the fourth candidate control channel The fourth CCE included in the channel corresponds to a third reference signal, and the second reference signal is different from the third reference signal.

It should be understood that the apparatus 900 may be specifically a network device in the foregoing method 200 embodiment, and may be configured to execute various steps and/or processes corresponding to the network device in the foregoing method 200 embodiment. Optionally, the memory 630 may include read only memory and random access memory and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 610 may be configured to execute the instructions stored in the memory, and when the processor 910 executes the instructions stored in the memory, the processor 910 is configured to execute various steps and steps of the above-mentioned embodiment of the method 200 corresponding to the network device. / or process.

FIG. 15 shows yet another apparatus 1000 for transmitting information provided by an embodiment of the present application. The apparatus 1000 includes a processor 1010 , a transceiver 1020 and a memory 1030 . The processor 1010, the transceiver 1020 and the memory 1030 communicate with each other through an internal connection path, the memory 1030 is used to store instructions, and the processor 1010 is used to execute the instructions stored in the memory 1030 to control the transceiver 1020 to send signals and / or receive signals.

The transceiver 1020 is configured to receive the control information sent by the network device on the first candidate control channel of the first aggregation level among the multiple candidate control channels; the multiple candidate control channels also include the second candidate of the second aggregation level control channel, the first aggregation level and the second aggregation level are determined or defined by the number of CCEs in control channel units, the first aggregation level is smaller than the second aggregation level, and the first candidate control channel includes The CCE set is a subset of the CCE set included in the second candidate control channel, the first reference signal and the second reference signal corresponding to the first candidate control channel are QCL, and the first reference signal corresponding to the second candidate control channel is QCL. The three reference signals and the fourth reference signal are quasi-co-located QCL, and the QCL of the first candidate control channel is derived from the QCL of the second candidate control channel.

It should be understood that the apparatus 1000 may be specifically a terminal device in the above embodiment of the method 300, and may be used to execute various steps and/or processes corresponding to the terminal device in the above embodiment of the method 300. Optionally, the memory 1030 may include read only memory and random access memory and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 1010 may be configured to execute the instructions stored in the memory, and when the processor 810 executes the instructions stored in the memory, the processor 1010 is configured to execute the various steps and steps of the above-mentioned embodiment of the method 300 corresponding to the terminal device. / or process.

FIG. 16 shows yet another apparatus 1100 for transmitting information provided by an embodiment of the present application. The apparatus 1100 includes a processor 1110 , a transceiver 1120 and a memory 1130 . The processor 1110, the transceiver 1120 and the memory 1130 communicate with each other through an internal connection path, the memory 1130 is used to store instructions, and the processor 1110 is used to execute the instructions stored in the memory 1130 to control the transceiver 1120 to send signals and / or receive signals.

The transceiver 1120 is configured to send control information to the terminal device on the first candidate control channel of the first aggregation level among the multiple candidate control channels; the multiple candidate control channels also include the second candidate control channel of the second aggregation level channel, the first aggregation level and the second aggregation level are determined or defined by the number of CCEs in control channel units, the first aggregation level is smaller than the second aggregation level, and the CCEs included in the first candidate control channel The set is a subset of the CCE set included in the second candidate control channel, the first reference signal and the second reference signal corresponding to the first candidate control channel are QCL, and the third candidate control channel corresponding to the second The reference signal and the fourth reference signal are quasi-co-located QCL, and the QCL of the first candidate control channel is derived from the QCL of the second candidate control channel.

It should be understood that the apparatus 1100 may be specifically a network device in the foregoing method 300 embodiment, and may be configured to execute various steps and/or processes corresponding to the network device in the foregoing method 300 embodiment. Optionally, the memory 1130 may include read only memory and random access memory and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 1110 may be configured to execute the instructions stored in the memory, and when the processor 1110 executes the instructions stored in the memory, the processor 1110 is configured to execute the various steps and steps of the above-mentioned embodiment of the method 300 corresponding to the network device. / or process.

It should be understood that the transceivers described above may include transmitters and receivers. The transceiver may further include antennas, and the number of the antennas may be one or more. The memory can be a separate device or integrated in the processor. Each of the above-mentioned devices or some of the devices can be implemented by being integrated into a chip, such as a baseband chip.

It should also be understood that, in this embodiment of the present application, the processor of the above device may be a central processing unit (central processing unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (digital signal processors, DSP), Application specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

In the implementation process, each step of the above-mentioned method can be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software units in the processor. The software unit may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor executes the instructions in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, detailed description is omitted here.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL), or wireless (eg, infrared, wireless, microwave, etc.) A readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The available media can be magnetic media, (eg, floppy disks, hard disks, magnetic tape), optical media (eg, DVD), or semiconductor media (eg, solid state disk (SSD)), and the like.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution, and the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, removable hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims (30)

1. A method for transmitting information, wherein the method comprises: The terminal device determines a reference signal corresponding to each candidate control channel in the multiple candidate control channels; The terminal device receives the control information sent by the network device on the first candidate control channel according to the reference signal corresponding to the first candidate control channel of the first aggregation level in the plurality of candidate control channels; The multiple candidate control channels further include second candidate control channels of a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of control channel units CCEs, and the first aggregation level Different from the second aggregation level, the first candidate control channel includes at least a first control channel element CCE, the second candidate control channel includes at least a second control channel element CCE, and the first CCE and the second CCE are in the same control channel The numbers in the resource set are the same, and the first CCE and the second CCE correspond to the same first reference signal, the plurality of candidate control channels further include a third candidate control channel and a fourth candidate control channel, the first The three candidate control channels include a third CCE corresponding to a second reference signal, the fourth CCE included in the fourth candidate control channel corresponds to a third reference signal, and the second reference signal is different from the third reference signal. 2. The method according to claim 1, wherein the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, and the first candidate control channel is the same as the CCE set included in the second candidate control channel. All CCEs included in the second candidate control channel correspond to the same first reference signal; Wherein, the terminal device determines the reference signal corresponding to each candidate control channel in the multiple candidate control channels, including: The terminal device determines the first reference signal as the reference signal of the first candidate control channel and the second candidate control channel. 3 . The method according to claim 1 , wherein the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, and the second candidate control channel is excluding the CCEs other than the CCEs included in the first candidate control channel use a fourth reference signal, and the first reference signal is different from the fourth reference signal; Wherein, the terminal device determines the reference signal corresponding to each candidate control channel in the multiple candidate control channels, including: determining, by the terminal device, the first reference signal as the reference signal of the first candidate control channel; The terminal device determines the first reference signal and the fourth reference signal as reference signals of the second candidate control channel. 4. The method according to any one of claims 1 to 3, wherein the aggregation level of the third candidate control channel and the fourth candidate control channel is the same, and the third candidate control channel includes The i-th candidate control channel element of , and the i-th candidate control channel element included in the fourth candidate control channel use different reference signals, i is an integer greater than or equal to 0 and less than n, and n is the third candidate control channel The number of candidate control channel elements included in the channel or the fourth candidate control channel. 5. The method according to any one of claims 1 to 4, wherein the resources of the first reference signal, the resources of the second reference signal, the resources of the third reference signal and the fourth The resources of the reference signal include at least one of time-frequency resources, codeword resources, and reference signal sequences. 6. A method for transmitting information, wherein the method comprises: The network device sends control information to the terminal device on the first candidate control channel of the first aggregation level among the plurality of candidate control channels; The multiple candidate control channels further include second candidate control channels of a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of control channel units CCEs, and the first aggregation level Different from the second aggregation level, the first candidate control channel includes at least a first control channel element CCE, the second candidate control channel includes at least a second control channel element CCE, and the first CCE and the second CCE are in the same control channel The numbers in the resource set are the same, and the first CCE and the second CCE correspond to the same first reference signal, the plurality of candidate control channels further include a third candidate control channel and a fourth candidate control channel, the first The three candidate control channels include a third CCE corresponding to a second reference signal, the fourth CCE included in the fourth candidate control channel corresponds to a third reference signal, and the second reference signal is different from the third reference signal. The method according to claim 6, wherein the set of CCEs included in the first candidate control channel is a subset of the set of CCEs included in the second candidate control channel, and the first candidate control channel All CCEs included in the second candidate control channel correspond to the same first reference signal. 8 . The method according to claim 6 , wherein the set of CCEs included in the first candidate control channel is a subset of the set of CCEs included in the second candidate control channel, and the second candidate control channel except for The CCEs other than the CCEs included in the first candidate control channel use a fourth reference signal, and the first reference signal is different from the fourth reference signal. 9 . The method according to claim 6 , wherein the aggregation level of the third candidate control channel and the fourth candidate control channel is the same, and the third candidate control channel includes The i-th candidate control channel element of , and the i-th candidate control channel element included in the fourth candidate control channel use different reference signals, i is an integer greater than or equal to 0 and less than n, and n is the third candidate control channel The number of candidate control channel elements included in the channel or the fourth candidate control channel. 10. The method according to any one of claims 6 to 9, wherein the resources of the first reference signal, the resources of the second reference signal, the resources of the third reference signal and the fourth The resources of the reference signal include at least one of time-frequency resources, codeword resources, and reference signal sequences. 11. A method for transmitting information, wherein the method comprises: The terminal device receives the control information sent by the network device on the first candidate control channel of the first aggregation level among the multiple candidate control channels; The multiple candidate control channels further include second candidate control channels of a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of control channel units CCEs, and the first aggregation level and the second aggregation level are determined or defined by the number of CCEs. The aggregation level is smaller than the second aggregation level, the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, and the first reference signal corresponding to the first candidate control channel The second reference signal is QCL, the third reference signal corresponding to the second candidate control channel and the fourth reference signal are quasi-co-located QCL, and the QCL of the first candidate control channel is determined by the second candidate control channel. QCL export. 12. The method according to claim 11, wherein before the terminal device receives the control information sent by the network device on the first candidate control channel of the first aggregation level among the plurality of candidate control channels, the The method also includes: receiving, by the terminal device, configuration information sent by the network device, where the configuration information is used to indicate the QCL of the second candidate control channel; determining, by the terminal device, the QCL of the second candidate control channel according to the configuration information; The terminal device determines the QCL of the first candidate control channel according to the QCL of the second candidate control channel. The method according to claim 11 or 12, wherein the second reference signal or the fourth reference signal is a broadcast channel reference signal, a phase tracking reference signal PT-RS, and a tracking reference signal T-RS , at least one of a demodulation reference signal of the physical downlink shared channel PDSCH, a common reference signal CRS, a channel state information reference signal CSI-RS, or a synchronization signal. 14. A method for transmitting information, wherein the method comprises: The network device sends control information to the terminal device on the first candidate control channel of the first aggregation level among the plurality of candidate control channels; The multiple candidate control channels further include second candidate control channels of a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of control channel units CCEs, and the first aggregation level and the second aggregation level are determined or defined by the number of CCEs. The aggregation level is smaller than the second aggregation level, the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, and the first reference signal corresponding to the first candidate control channel The second reference signal is QCL, the third reference signal corresponding to the second candidate control channel and the fourth reference signal are quasi-co-located QCL, and the QCL of the first candidate control channel is determined by the second candidate control channel. QCL export. 15. The method of claim 14, wherein the method further comprises: The network device sends configuration information to the terminal device, where the configuration information is used to indicate the QCL of the second candidate control channel. The method according to claim 14 or 15, wherein the second reference signal or the fourth reference signal is a broadcast channel reference signal, a phase tracking reference signal PT-RS, and a tracking reference signal T-RS , at least one of a PDSCH demodulation reference signal, a common reference signal CRS, a channel state information reference signal CSI-RS or a synchronization signal. 17. An apparatus for transmitting information, wherein the apparatus comprises: a determining unit, configured to determine a reference signal corresponding to each candidate control channel in the multiple candidate control channels; a transceiver unit, configured to receive, on the first candidate control channel, control information sent by a network device according to a reference signal corresponding to a first candidate control channel of a first aggregation level in the plurality of candidate control channels; The multiple candidate control channels further include second candidate control channels of a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of control channel units CCEs, and the first aggregation level Different from the second aggregation level, the first candidate control channel includes at least a first control channel element CCE, the second candidate control channel includes at least a second control channel element CCE, and the first CCE and the second CCE are in the same control channel The numbers in the resource set are the same, and the first CCE and the second CCE correspond to the same first reference signal, the plurality of candidate control channels further include a third candidate control channel and a fourth candidate control channel, the first The three candidate control channels include a third CCE corresponding to a second reference signal, the fourth CCE included in the fourth candidate control channel corresponds to a third reference signal, and the second reference signal is different from the third reference signal. The apparatus according to claim 17, wherein the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, and the first candidate control channel is the same as the CCE set included in the second candidate control channel. All CCEs included in the second candidate control channel correspond to the same first reference signal; The determining unit is specifically configured to: determine the first reference signal as the reference signal of the first candidate control channel and the second candidate control channel. 19 . The apparatus according to claim 17 , wherein the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, and the second candidate control channel is excluding the CCEs other than the CCEs included in the first candidate control channel use a fourth reference signal, and the first reference signal is different from the fourth reference signal; The determining unit is also specifically used for: determining the first reference signal as the reference signal of the first candidate control channel; The first reference signal and the fourth reference signal are determined as reference signals of the second candidate control channel. 20. The apparatus according to any one of claims 17 to 19, wherein the third candidate control channel and the fourth candidate control channel have the same aggregation level, and the third candidate control channel includes The i-th candidate control channel element of , and the i-th candidate control channel element included in the fourth candidate control channel use different reference signals, i is an integer greater than or equal to 0 and less than n, and n is the third candidate control channel The number of candidate control channel elements included in the channel or the fourth candidate control channel. 21. A device for transmitting information, characterized in that the device comprises: a transceiver unit, configured to send control information to the terminal device on the first candidate control channel of the first aggregation level in the plurality of candidate control channels; The multiple candidate control channels further include second candidate control channels of a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of control channel units CCEs, and the first aggregation level Different from the second aggregation level, the first candidate control channel includes at least a first control channel element CCE, the second candidate control channel includes at least a second control channel element CCE, and the first CCE and the second CCE are in the same control channel The numbers in the resource set are the same, and the first CCE and the second CCE correspond to the same first reference signal, the plurality of candidate control channels further include a third candidate control channel and a fourth candidate control channel, the first The three candidate control channels include a third CCE corresponding to a second reference signal, the fourth CCE included in the fourth candidate control channel corresponds to a third reference signal, and the second reference signal is different from the third reference signal. 22. The apparatus according to claim 21, wherein the set of CCEs included in the first candidate control channel is a subset of the set of CCEs included in the second candidate control channel, and the first candidate control channel All CCEs included in the second candidate control channel correspond to the same first reference signal. 23 . The apparatus according to claim 21 , wherein the set of CCEs included in the first candidate control channel is a subset of the set of CCEs included in the second candidate control channel, and the second candidate control channel is excluding the The CCEs other than the CCEs included in the first candidate control channel use a fourth reference signal, and the first reference signal is different from the fourth reference signal. 24. The apparatus according to any one of claims 21 to 23, wherein the third candidate control channel and the fourth candidate control channel have the same aggregation level, and the third candidate control channel includes The i-th candidate control channel element of , and the i-th candidate control channel element included in the fourth candidate control channel use different reference signals, i is an integer greater than or equal to 0 and less than n, and n is the third candidate control channel The number of candidate control channel elements included in the channel or the fourth candidate control channel. 25. An apparatus for transmitting information, characterized in that the apparatus comprises: a transceiver unit, configured to receive control information sent by the network device on the first candidate control channel of the first aggregation level among the multiple candidate control channels; The multiple candidate control channels further include second candidate control channels of a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of control channel units CCEs, and the first aggregation level and the second aggregation level are determined or defined by the number of CCEs. The aggregation level is smaller than the second aggregation level, the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, and the first reference signal corresponding to the first candidate control channel The second reference signal is QCL, the third reference signal corresponding to the second candidate control channel and the fourth reference signal are quasi-co-located QCL, and the QCL of the first candidate control channel is determined by the second candidate control channel. QCL export. 26. The apparatus according to claim 25, wherein the transceiver unit is further configured to: Before receiving the control information sent by the network device on the first candidate control channel of the first aggregation level among the multiple candidate control channels, receive configuration information sent by the network device, where the configuration information is used to indicate the second candidate control channel QCL of the channel; The device also includes: a determining unit, configured to determine the QCL of the second candidate control channel according to the configuration information, and determine the QCL of the first candidate control channel according to the QCL of the second candidate control channel. 27. The apparatus according to claim 25 or 26, wherein the second reference signal or the fourth reference signal is a broadcast channel reference signal, a phase tracking reference signal PT-RS, and a tracking reference signal T-RS , at least one of a demodulation reference signal of the physical downlink shared channel PDSCH, a common reference signal CRS, a channel state information reference signal CSI-RS, or a synchronization signal. 28. A device for transmitting information, characterized in that the device comprises: a transceiver unit, configured to send control information to the terminal device on the first candidate control channel of the first aggregation level in the plurality of candidate control channels; The multiple candidate control channels further include second candidate control channels of a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of control channel units CCEs, and the first aggregation level and the second aggregation level are determined or defined by the number of CCEs. The aggregation level is smaller than the second aggregation level, the CCE set included in the first candidate control channel is a subset of the CCE set included in the second candidate control channel, and the first reference signal corresponding to the first candidate control channel The second reference signal is QCL, the third reference signal corresponding to the second candidate control channel and the fourth reference signal are quasi-co-located QCL, and the QCL of the first candidate control channel is determined by the second candidate control channel. QCL export. 29. The apparatus according to claim 28, wherein the transceiver unit is further configured to: Send configuration information to the terminal device, where the configuration information is used to indicate the QCL of the second candidate control channel. The apparatus according to claim 28 or 29, wherein the second reference signal or the fourth reference signal is a broadcast channel reference signal, a phase tracking reference signal PT-RS, and a tracking reference signal T-RS , at least one of a PDSCH demodulation reference signal, a common reference signal CRS, a channel state information reference signal CSI-RS or a synchronization signal.