CN112291050B

CN112291050B - Method and device for transmitting information

Info

Publication number: CN112291050B
Application number: CN202010995054.1A
Authority: CN
Inventors: 张旭; 薛丽霞
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-06-16
Filing date: 2017-06-16
Publication date: 2024-06-18
Anticipated expiration: 2037-06-16
Also published as: CN112291050A; CN109150460B; CN109150460A

Abstract

The application provides a method for transmitting information, which comprises the following steps: the terminal equipment determines a reference signal corresponding to each candidate control channel in a plurality of candidate control channels; the terminal equipment receives control information sent by the network equipment on a first candidate control channel according to a reference signal corresponding to the first candidate control channel of a first aggregation level in the plurality of candidate control channels; the plurality of candidate control channels further comprise a second candidate control channel with a second aggregation level, the first aggregation level is different from the second aggregation level, the first candidate control channel at least comprises a first Control Channel Element (CCE), the second candidate control channel at least comprises a second Control Channel Element (CCE), the first CCE and the second CCE are numbered the same in the same control channel resource set, and the first CCE corresponds to the same first reference signal with the second CCE, so that the resource overhead can be reduced, and the system performance can be improved.

Description

Method and device for transmitting information

Cross Reference to Related Applications

The present application is a division of chinese patent application filed 16 months 2017, 06, by the chinese patent office under application number 201710459703.4, under application name "method and apparatus for transmitting information", the entire contents of which are incorporated herein by reference.

Technical Field

Embodiments of the present application relate to the field of communications, and more particularly, to a method and apparatus for transmitting information in the field of communications.

Background

The existing network system may use reference signals to perform channel estimation, measurement and tracking, for example, in enhanced physical downlink candidate control channels (ENHANCED PHYSICAL downlink control channel, EPDCCH), one candidate control channel in the EPDCCH may correspond to one or more reference signals, but candidate control channels with different aggregation levels form multiple candidate control channels, and multiple candidate control channels may have many reference signals, which may cause complexity when the terminal device uses the reference signals, resulting in high resource overhead and lower system performance. For example, when the terminal device demodulates data using the reference signal, the complexity of the demodulated data may be increased, and for example, when the terminal device performs channel estimation using the reference signal, the complexity of the channel estimation may be increased.

Disclosure of Invention

The application provides a method for transmitting information, which can reduce resource expenditure and is beneficial to improving system performance.

In a first aspect, a method for transmitting information is provided, including: the terminal equipment determines a reference signal corresponding to each candidate control channel in a plurality of candidate control channels; the terminal equipment receives control information sent by the network equipment on a first candidate control channel according to a reference signal corresponding to the first candidate control channel of a first aggregation level in the plurality of candidate control channels; the plurality of candidate control channels further comprise a second candidate control channel of a second aggregation level, the first candidate control channel at least comprises a first Control Channel Element (CCE), the second candidate control channel at least comprises a second Control Channel Element (CCE), the first CCE and the second CCE are identical in number in the same control channel resource set, and the first CCE and the second CCE correspond to the same first reference signal.

In the embodiment of the application, the terminal equipment can determine the reference signal of each candidate control channel in the plurality of candidate control channels, and because the first CCE corresponds to the same first reference signal as the second CCE, the reference signal corresponding to the first CCE of the first candidate control channel can be determined as the first reference signal, and the reference signal corresponding to the second CCE of the second candidate control channel can be determined as the first reference signal, so that the terminal equipment can utilize the first reference signal to demodulate the control information on the first CCE and the second CCE, for example, the terminal equipment can utilize the first reference signal to perform channel estimation on the first CCE of the first candidate control channel to obtain the first estimated value, and the terminal equipment can determine the first estimated value as the second CCE channel estimated value of the second candidate control channel, so that the second CCE of the second candidate control channel can be prevented from performing channel estimation again, the cost of resources can be saved, the utilization rate of the resources can be improved, and the system performance can be further improved.

Optionally, the first aggregation level and the second aggregation level are determined or defined by a control channel element CCE number.

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

Optionally, the plurality of candidate control channels further includes a third candidate control channel and a fourth candidate control channel, the third candidate control channel including a third CCE corresponding to a second reference signal, the fourth candidate control channel including a fourth CCE corresponding to a third reference signal, the second reference signal being different from the third reference signal.

Alternatively, the terminal device may transmit data using the control information.

Optionally, the plurality of candidate control channels include a plurality of aggregation level candidate control channels, one aggregation level candidate control channel is a part of the plurality of candidate control channels, one aggregation level corresponds to one search space, and then the plurality of aggregation levels corresponds to a plurality of search spaces.

Alternatively, the plurality of search spaces may be a plurality of Common Search Spaces (CSS) and the plurality of search spaces may be a plurality of dedicated search space search spaces (UE SEARCH SPACE, USS), and the plurality of search spaces may also include at least one CSS and at least one USS, which is not limited by the 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, the first candidate control channel corresponding to the same first reference signal as all CCEs included in the second candidate control channel; the method for determining the reference signal corresponding to each candidate control channel in the plurality of candidate control channels by the terminal equipment comprises the following steps: the terminal device determines the first reference signal as the reference signal of the first candidate control channel and the second candidate control channel.

In the 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 a first control channel resource set; the elements in the CCE set included in the second candidate control channel are elements in a second control channel resource set, and 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, the CCEs of the second candidate control channel other than the CCEs included in the first candidate control channel using a fourth reference signal, the first reference signal being different from the fourth reference signal; the method for determining the reference signal corresponding to each candidate control channel in the plurality of candidate control channels by the terminal equipment comprises the following steps: the terminal equipment 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 reference signals of the second candidate control channel.

In the embodiment of the present application, if the two candidate control channels have the same CCEs, CCEs of the same portion correspond to the same reference signal, and reference signals corresponding to CCEs of different portions may be different.

In some implementations, the aggregation level of the third candidate control channel and the fourth candidate control channel is the same, the i-th candidate control channel unit included in the third candidate control channel and the i-th candidate control channel unit 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 number of candidate control channel units included in the third candidate control channel or the fourth candidate control channel.

In the embodiment of the application, the reference signals corresponding to CCEs on the corresponding positions of different candidate control channels with the same aggregation level are different, so that the randomness of the reference signals can be improved, the interference caused by sampling the same reference signals on the corresponding CCE positions with other terminal equipment can be reduced, and the reliability of the system can be improved. In some implementations, the aggregation level of the third candidate control channel and the fourth candidate control channel is the lowest.

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

In certain implementations, the first reference signal is a demodulation reference signal (demodulation REFERENCE SIGNAL, DMRS) for demodulating 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 at least one of time-frequency resources, codeword resources, and reference signal sequences.

In a second aspect, there is provided a method of transmitting information, comprising: the network equipment sends control information to the terminal equipment on a first candidate control channel of a first aggregation level in a plurality of candidate control channels; the plurality of candidate control channels further comprise a second candidate control channel of a second aggregation level, the first candidate control channel at least comprises a first Control Channel Element (CCE), the second candidate control channel at least comprises a second Control Channel Element (CCE), the first CCE and the second CCE are identical in number in the same control channel resource set, and the first CCE and the second CCE correspond to the same first reference signal.

Alternatively, 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 plurality of candidate control channels includes a plurality of aggregation levels of candidate control channels, one aggregation level corresponding to one search space, and the plurality of aggregation levels corresponding to a plurality of 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, the first candidate control channel corresponding to the same first reference signal as all CCEs included in the second candidate control channel.

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, CCEs of the second candidate control channel other than CCEs included in the first candidate control channel using a fourth reference signal, the first reference signal being different from the fourth reference signal.

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

In some implementations, the first reference signal is a demodulation reference signal, DMRS, for demodulating the first candidate control channel.

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

In a third aspect, a method for transmitting information is provided, including: the terminal equipment receives control information sent by the network equipment on a first candidate control channel of a first aggregation level in a plurality of candidate control channels; the plurality of candidate control channels 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, the first reference signal and the second reference signal corresponding to the first candidate control channel are quasi co-located (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 derived (derived) from the QCL of the second candidate control channel.

In the embodiment of the present application, 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, 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 with a low aggregation level is a subset of the set of CCEs included in the second candidate control channel with a high aggregation level, the QCL of the first candidate control channel is the same as the QCL of the second candidate control channel, and the terminal device may perform channel estimation on the channel on the time-frequency resource where the first candidate control channel is located by using the second reference signal having the QCL hypothesis corresponding to the first reference signal corresponding to the first candidate control channel, so when the frequency domain density of the first reference signal of the first candidate control channel is lower, the second reference signal may assist the first candidate control channel to perform channel estimation, that is the same as the QCL parameters corresponding to the first reference signal and the second reference signal, which may improve the utilization rate of the reference signal and improve the reliability of the system.

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

Optionally, after the terminal device receives the control information sent by the network device on a first candidate control channel of a first aggregation level of the plurality of candidate control channels, the method further includes: and the terminal equipment transmits data according to the control information.

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

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

Alternatively, the plurality of search spaces may be a plurality of CSSs, and the plurality of search spaces may be a plurality of USSs, where the plurality of search spaces may also include at least one CSS and at least one USS, which is not limited by the embodiment of the present application.

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.

Alternatively, the QCL of the second candidate control channel may be protocol defined or network configured.

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, when the frequency domain density of the first reference signal of the first candidate control channel is lower, the channel on the time-frequency resource where the first candidate control channel is located may be estimated by using the second reference signal, when the frequency domain density of the third reference signal of the second candidate control channel is lower, the channel on the second candidate control channel may be estimated by using the fourth reference channel, and when the second reference signal is the same as the fourth reference signal and the frequency domain densities of the first reference signal and the third reference signal are lower, the terminal device may use the second reference signal or the fourth reference signal to estimate the channel on the time-frequency resource where the first candidate control channel and the second candidate control channel are located, so that the utilization rate of the reference signal may be improved and the reliability of the system may be improved.

In some implementations, before the terminal device receives control information sent by a network device on a first candidate control channel of a first aggregation level of the plurality of candidate control channels, the method further includes: the terminal equipment receives configuration information sent by network equipment, wherein the configuration information is used for indicating QCL of the second candidate control channel; the terminal equipment determines QCL of the second candidate control channel according to the configuration information; and the terminal equipment determines the QCL of the first candidate control channel according to the QCL of the second candidate control channel.

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

In a fourth aspect, there is provided a method of transmitting information, comprising: the network equipment sends control information to the terminal equipment on a first candidate control channel of a first aggregation level in a plurality of candidate control channels;

The plurality of candidate control channels further comprise a second candidate control channel with 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, the first reference signal and the second reference signal corresponding to the first candidate control 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 derived from the QCL of the second candidate control channel.

In the embodiment of the present application, 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, 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 with a low aggregation level is a subset of the set of CCEs included in the second candidate control channel with a high aggregation level, the QCL of the first candidate control channel is the same as the QCL of the second candidate control channel, and the terminal device may perform channel estimation on the first candidate control channel of the channel on the time-frequency resource by using the second reference signal assumed by the presence of the QCL of the first reference signal corresponding to the first candidate control channel, so that when the frequency domain density of the first reference signal of the first candidate control channel is lower, the second reference signal may 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, so as to improve the utilization rate of the reference signal and improve the reliability of the system.

Optionally, before the network device sends the control information to the terminal device on a first candidate control channel of a first aggregation level of the plurality of candidate control channels, the method further comprises: 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, the configuration information being used to indicate the QCL of the second candidate control channel.

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

In a fifth aspect, there is provided a method of transmitting information, comprising: the terminal equipment determines reference signals of each candidate control channel in a plurality of search spaces; the terminal equipment receives the control information sent by the network equipment on at least one control channel of the plurality of search spaces; the terminal equipment demodulates the control information according to the reference signal of the at least one control channel to obtain the demodulated control information; the terminal equipment transmits information with the network equipment according to the demodulated control information; the plurality of candidate control channels comprise a third candidate control channel and a fourth candidate control channel, the aggregation level of the third candidate control channel and the aggregation level of the fourth candidate control channel are the same, the ith candidate control channel unit included in the third candidate control channel and the ith candidate control channel unit included in the fourth candidate control channel correspond to different reference signals, i is an integer greater than or equal to 0 and less than n, and n is the number of candidate control channel units included in the third candidate control channel or the fourth candidate control channel.

Optionally, the plurality of search spaces corresponds to a plurality of aggregation levels, e.g., 3 search spaces correspond to 3 aggregation levels.

In the embodiment of the application, the reference signals corresponding to CCEs on the corresponding positions of different candidate control channels with the same aggregation level are different, so that the randomness of the reference signals can be improved, the interference caused by sampling the same reference signals on the corresponding CCE positions with other terminal equipment can be reduced, and the reliability of the system can be improved.

Alternatively, CCEs of candidate control channels at the same aggregation level are mutually orthogonal

For example, the third candidate control channel and the fourth candidate control channel are candidate control channels with an aggregation level of 8, and assume that the third candidate control channel includes 8 CCEs placed in order, namely CCE0, CCE1, CCE2, CCE3, CCE4, CCE5, CCE6, CCE7, and the fourth candidate control channel includes 8 CCEs placed in order, namely CCE8, CCE9, CCE10, CCE11, CCE12, CCE13, CCE14, and CCE15, and the reference signal corresponding to CCE0 of the third candidate control channel and the reference signal corresponding to CCE7 of the fourth candidate control channel are different, or the reference signal corresponding to CCE2 of the third candidate channel and the reference signal corresponding to CCE10 of the fourth candidate control channel are different, or the reference signal corresponding to CCE7 of the third candidate channel and CCE15 of the fourth candidate control channel are different, that is, so long as at least one reference signal corresponding to the 8 positions is different, the degree of randomization can be improved.

Specifically, the i-th candidate control channel unit included in the third candidate control channel corresponds to a fifth reference signal, the i-th candidate control channel unit included in the fourth candidate control channel corresponds to a sixth reference signal, 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, there is provided a method of transmitting information, comprising: the network device sends control information to the terminal device on at least one control channel in the plurality of search spaces; the network equipment transmits information with the terminal equipment according to the control information; the plurality of candidate control channels comprise a third candidate control channel and a fourth candidate control channel, the aggregation level of the third candidate control channel and the aggregation level of the fourth candidate control channel are the same, the ith candidate control channel unit included in the third candidate control channel and the ith candidate control channel unit included in the fourth candidate control channel correspond to different reference signals, i is an integer greater than or equal to 0 and less than n, and n is the number of candidate control channel units included in the third candidate control channel or the fourth candidate control channel.

In a seventh aspect, there is provided an apparatus for transmitting information for performing the method of the first aspect or any possible implementation of the first aspect. In particular, the apparatus comprises means for performing the method of the first aspect or any possible implementation of the first aspect.

In an eighth aspect, there is provided an apparatus for transmitting information for performing the method of the second aspect or any possible implementation of the second aspect. In particular, the apparatus comprises means for performing the method of the second aspect described above or any possible implementation of the second aspect.

A ninth aspect provides a system for transmitting information, comprising the apparatus of the fifth aspect or any alternative implementation thereof and the apparatus of the sixth aspect or any alternative implementation thereof.

In a tenth aspect, there is provided an apparatus for transmitting information for performing the method of the third aspect or any possible implementation of the third aspect. In particular, the apparatus comprises means for performing the method of the third aspect or any possible implementation of the third aspect.

An eleventh aspect provides an apparatus for transmitting information for performing the method of the fourth aspect or any possible implementation of the fourth aspect. In particular, the apparatus comprises means for performing the method in the fourth aspect or any possible implementation of the fourth aspect.

In a twelfth aspect, there is provided a system for transmitting information, comprising the apparatus of the tenth aspect or any alternative implementation thereof and the apparatus of the eleventh aspect or any alternative implementation thereof.

In a thirteenth aspect, there is provided an apparatus for transmitting information for performing the method of the fifth aspect or any possible implementation of the fifth aspect. In particular, the apparatus comprises means for performing the method of the fifth aspect or any possible implementation of the fifth aspect.

In a fourteenth aspect, there is provided an apparatus for transmitting information for performing the method of the sixth aspect or any possible implementation of the sixth aspect. In particular, the apparatus comprises means for performing the method of the sixth aspect or any possible implementation of the sixth aspect.

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

In a sixteenth aspect, there is provided an apparatus for transmitting information, the apparatus comprising: a transceiver, a memory, and a processor. Wherein the transceiver, the memory and the processor are in communication with each other via an internal connection path, the memory is configured to store instructions, the processor is configured to execute the instructions stored by the memory to control the receiver to receive signals and control the transmitter to transmit signals, and when the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the first aspect or any one of the possible implementations of the first aspect.

In a seventeenth aspect, there is provided an apparatus for transmitting information, the apparatus comprising: a transceiver, a memory, and a processor. Wherein the transceiver, the memory and the processor are in communication with each other via an internal connection path, the memory is configured to store instructions, the processor is configured to execute the instructions stored by the memory to control the receiver to receive signals and control the transmitter to transmit signals, and when the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the second aspect or any one of the possible implementations of the second aspect.

In an eighteenth aspect, there is provided an apparatus for transmitting information, the apparatus comprising: a transceiver, a memory, and a processor. Wherein the transceiver, the memory and the processor are in communication with each other via an internal connection path, the memory being for storing instructions, the processor being for executing the instructions stored by the memory to control the receiver to receive signals and the transmitter to transmit signals, and when the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the third aspect or any one of the possible implementations of the third aspect.

In a nineteenth aspect, there is provided an apparatus for transmitting information, the apparatus comprising: a transceiver, a memory, and a processor. Wherein the transceiver, the memory and the processor are in communication with each other via an internal connection path, the memory is configured to store instructions, the processor is configured to execute the instructions stored by the memory to control the receiver to receive signals and control the transmitter to transmit signals, and when the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the fourth aspect or any one of the possible implementations of the fourth aspect.

In a twentieth aspect, there is provided an apparatus for transmitting information, the apparatus comprising: a transceiver, a memory, and a processor. Wherein the transceiver, the memory and the processor are in communication with each other via an internal connection path, the memory is configured to store instructions, the processor is configured to execute the instructions stored by the memory to control the receiver to receive signals and control the transmitter to transmit signals, and when the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the fifth aspect or any one of the possible implementations of the fifth aspect.

In a twenty-first aspect, there is provided an apparatus for transmitting information, the apparatus comprising: a transceiver, a memory, and a processor. Wherein the transceiver, the memory and the processor are in communication with each other via an internal connection path, the memory is configured to store instructions, the processor is configured to execute the instructions stored by the memory to control the receiver to receive signals and control the transmitter to transmit signals, and when the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the sixth aspect or any one of the possible implementations of the sixth aspect.

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

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

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

In a twenty-fifth aspect, a computer-readable storage medium is provided, in which instructions are stored which, when run on a computer, cause the computer to perform the method as in the fourth aspect or any possible implementation of the fourth aspect.

In a twenty-sixth aspect, a computer readable storage medium is provided, in which instructions are stored which, when run on a computer, cause the computer to perform the method as in the fifth aspect or any possible implementation of the fifth aspect.

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

Drawings

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

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

Fig. 3 is 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 resource diagram of a reference signal according to an embodiment of the present application.

Fig. 6 shows a resource diagram of a reference signal according to an embodiment of the present application.

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

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

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

Fig. 10 is 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 Description

The technical scheme of the application will be described below with reference to the accompanying drawings.

It should be understood that the technical solution of the embodiment of the present application may be applied to various communication systems, for example: global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA) system, 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 (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) communication system, wireless local area network (wireless local area network, WLAN) or future fifth generation wireless communication system (the fifth Generation, 5G), etc.

Fig. 1 shows a communication system 100 in which an embodiment of the application is applied. The communication system 100 may include a terminal device 110. The terminal device 110 may refer to an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (session initiation protocol) telephone, a wireless local loop (wireless local loop, WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal in a 5G network, etc.

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

It should be understood that the number of terminal devices 110 may be one or more, and embodiments of the present application will be described with reference to only one terminal device.

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

Symbols, including but not limited to orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols, sparse code division multiple access (sparse code multiplexing access, SCMA) symbols, filtered orthogonal frequency division multiplexing (filtered orthogonal frequency division multiplexing, F-OFDM) symbols, non-orthogonal multiple access (non-orthogonal Multiple Access, NOMA) symbols, may be specifically determined according to practical situations, and will not be described herein.

Subcarrier width, minimum granularity in the frequency domain. For example, in LTE, the subcarrier width of 1 subcarrier is 15kHz; in 5G, 1 subcarrier may be 15kHz,30kHz, or 60kHz wide.

The physical resource block (physical resource block, PRB) occupies P continuous subcarriers in the frequency domain, and the resources occupied in the time domain are continuous Q OFDM symbols. Wherein 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.

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

Candidate Control Channel Elements (CCEs) CHANNEL ELEMENT, one candidate control channel element corresponds to a plurality of resource element groups, and the number of resource element groups to which one candidate control channel element corresponds 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.

The candidate set of control channel resources comprises time-frequency resources of at least one search space, e.g. comprising an integer number of physical resource blocks in the frequency domain (which may be contiguous or discrete in the frequency domain) and comprising 1 or more OFDM symbols in the time domain, e.g. 1, or 2, or 3 OFDM symbols in succession.

Aggregation level, i.e. the number of candidate control channel units included in the candidate control channel, i.e. 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, this is also referred to as the aggregation level of the candidate control channel is L.

The search space, a set of one or more candidate control channels having the same aggregation level L, is referred to as a search space, and may be denoted as S (L).

Before acquiring downlink control information, the terminal equipment acquires a reference signal corresponding to a downlink candidate control channel; the terminal equipment can utilize the reference signal to demodulate the downlink candidate control channel, alternatively, the terminal equipment can utilize the reference signal to estimate the channel estimation value of the channel state on the time-frequency resource where the downlink candidate control channel is located, and the terminal equipment can utilize the channel estimation value to demodulate the downlink control information; or the terminal device may track or measure by using the reference signal, and the effect of the embodiment of the present application on the reference signal is not limited in any way.

In the prior art, for example, in EPDCCH of the LTE system, a reference signal is not mapped on a resource unit mapped by control information, that is, the time-frequency resource occupied by the control information and the reference signal is not overlapped; however, the reference signals used for demodulating the EPDCCH are mapped only on the PRBs carrying the EPDCCH, i.e. the reference signals are not mapped in the PRBs not carrying the EPDCCH, which can save resource overhead. For example, in EPDCCH, the correspondence between reference signals and candidate control channels is shown in fig. 2, where {107,108,109, 110} in fig. 2 indicates the numbers of four antenna ports, one for each reference signal, and four for each reference signal, and in the following description, reference signals are indicated by the numbers of antenna ports. Fig. 2 includes 8 CCEs, namely CCE0, CCE1, CCE2, CCE3, CCE4, CCE5, CCE6 and CCE7, CCE0, CCE1, CCE2 and CCE3, forming a PRB, CCE4, CCE5, CCE6 and CCE7, forming a PRB, for candidate control channels with aggregation level 1, 8 CCEs respectively correspond to 8 candidate control channels, and reference signals of the 8 candidate control channels are 107,108,109,110,107,108,109,110 respectively; for a candidate control channel with an aggregation level of 2, the 8 CCEs correspond to 4 candidate control channels, the CCE of the first candidate control channel is CCE0 and CCE1, the reference signal of the first candidate control channel is 107, the CCE of the second candidate control channel is CCE2 and CCE3, the reference signal of the second candidate control channel is 109, the CCE of the third candidate control channel is CCE4 and CCE5, the reference signal of the third candidate control channel is 107, the CCE of the fourth candidate control channel is CCE6 and CCE7, and the reference signal of the fourth candidate control channel is 109; for example, in FIG. 2, the CCE occupied by the first candidate control channel and the second candidate control channel of aggregation level 1 are the same as the CCE occupied by the first candidate control channel of aggregation level 2, both CCE0 and CCE1, but the reference signals of the first candidate control channel and the second candidate control channel of aggregation level 1 are 107 and 108, the reference signal of the first candidate control channel of aggregation level 2 is 107, when the terminal device performs channel estimation by using the reference signal, the terminal device needs to perform channel estimation on the first candidate control channel of aggregation level 1 by using the reference signal 107, perform channel estimation on the second candidate control channel of aggregation level 1 by using the reference signal 108, i.e., the reference signals corresponding to the candidate control channels with overlapping resources are different, multiple channel estimation is required, and the complexity of channel estimation is increased. In practical applications, the channel estimation values obtained by the channels occupying the same time-frequency resources are the same. In the embodiment of the present application, the reference signals corresponding to the overlapped CCEs may be designed to be the same, so that the channel estimation values of the reference signals may be multiplexed, and the complexity of channel estimation is reduced, for example, in fig. 2, the reference signal of the second candidate control channel of aggregation level 1 is also 107, so that the channel estimation value of the first candidate control channel of aggregation level 2 may be adopted when the first candidate control channel and the second candidate control channel of aggregation level 1 perform channel estimation, and resource overhead caused by channel estimation may be avoided. Optionally, in the embodiment of the present application, all 8 CCEs in fig. 2 overlap with CCEs occupied by candidate control channels with aggregation level of 8, where reference signals corresponding to candidate control channels with aggregation level of 8 are 107, and reference signals of all candidate control channels corresponding to fig. 2 may be set to 107.

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

In the embodiment of the present application, the network device or the terminal device needs to determine the time-frequency resource occupied by the candidate control channel included in each search space in the plurality of search spaces first, and then the network device sends the control information on the time-frequency resource occupied by the candidate control channel, or the terminal device receives the control information on the time-frequency resource occupied by the candidate control channel. In the following, it is specifically described how the network device or the terminal device determines the time-frequency resources occupied by the candidate control channels included in each of the plurality of search spaces, where the time-frequency resources occupied by the candidate control channels are described in CCE units. Specifically, the determining, by the terminal device, the time-frequency resource occupied by the candidate control channel included in each of the plurality of search spaces may be according to a manner specified by the network device, or the network device indicates, to the terminal device, the time-frequency resource occupied by the candidate control channel included in each of the plurality of search spaces.

It is assumed that the candidate control channel resource set includes a number of CCEs of N, CCEs numbered 0,1,2,3, and N-1, for candidate control channels with an aggregation level of 1, one CCE may be selected as a resource of the candidate control channel according to a set rule in the candidate control channel resource set, the set rule may enable CCEs corresponding to different candidate control channels at the same aggregation level to be orthogonal, that is, there is no overlapping portion of time-frequency resources of different candidate control channels at the same aggregation level. For candidate control channels with an aggregation level of 2, each candidate control channel includes 2 CCEs, and then each candidate control channel includes two consecutive CCEs in the candidate control channel set, where a number of one CCE is M and M mod 2 = 0, and mod is a remainder operation. For candidate control channels with an aggregation level of 3, each candidate control channel includes a CCE number of 3, then each candidate control channel includes three consecutive CCEs in the candidate control channel set, where one CCE is numbered N and N mod 3 = 0 is satisfied. And so on, the CCE numbers of the candidate control channels included in each aggregation level may be determined according to the above-described method.

Fig. 3 illustrates a method 200 of transmitting information according to an embodiment of the present application, and the method 200 may be applied to the communication system 100 illustrated in fig. 1, but the embodiment of the present application is not limited thereto.

S210, the terminal equipment determines a reference signal corresponding to each candidate control channel in the plurality of candidate control channels.

It should be understood that each candidate control channel may be composed of at least one CCE, one CCE being composed of one or more REGs, the reference signal being carried on the time-frequency resource of at least one REG of the one or more REGs, i.e., one CCE corresponds to at least one reference signal, i.e., one candidate control channel corresponds to at least one reference signal.

S220, the network equipment sends control information to the terminal equipment on a first candidate control channel of a first aggregation level in a plurality of candidate control channels, and the terminal equipment receives the control information sent by the network equipment on the first candidate control channel according to a reference signal corresponding to the first candidate control channel; the plurality of candidate control channels further comprises a second candidate control channel of a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of Control Channel Element (CCE), the first aggregation level is different from the second aggregation level, the first candidate control channel at least comprises a first Control Channel Element (CCE), the second candidate control channel at least comprises a second Control Channel Element (CCE), the first CCE and the second CCE are the same in number in the same control channel resource set, the first CCE and the second CCE correspond to the same first reference signal, the plurality of candidate control channels further comprises a third candidate control channel and a fourth candidate control channel, the third candidate control channel comprises a third CCE corresponding to a second reference signal, the fourth candidate control channel comprises a fourth CCE corresponding to a third reference signal, and the second reference signal is different from the third reference signal.

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 third control channel and the reference signal corresponding to the fourth control channel are different, in other words, the plurality of control channels have the same CCE, so that the same reference signal corresponding to the same CCE is the same reference signal, but at least one of the reference signals corresponding to the candidate control channels where the same CCE does not exist is different, and the third candidate control channel and the fourth candidate control channel may be candidate control channels with the same aggregation level, or may be two candidate control channels with different aggregation levels and where the same CCE does not exist.

It should also be understood that one control channel resource set includes multiple CCEs, where 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 the same in the same control channel resource set, which means that the first CCE and the second CCE are the same CCE, alternatively, two CCEs with the same CCE number are mapped to REGs, where the time-frequency resources where the REGs are located are also the same, that is, the time-frequency resources where the first CCE and the second CCE correspond to are the same, the time-frequency resources where one CCE corresponds to may be one or more REGs, and at least one REG in the one or more REGs corresponds to a reference signal, that is, the first CCE corresponds to the same first reference signal as the second CCE, and the first reference signal may be a reference signal or multiple reference signals.

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, where the first candidate control channel corresponds to the same first reference signal as all CCEs included in the second candidate control channel; wherein S210 comprises; the terminal device determines the first reference signal as the reference signal of the first candidate control channel and the second candidate control channel. As an alternative 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, the CCEs of the second candidate control channel other than the CCEs included in the first candidate control channel use a fourth reference signal, the first reference signal being different from the fourth reference signal; wherein S210 includes: the terminal equipment 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 reference signals 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 indicating the low aggregation level is nested in the second candidate control channel indicating the high aggregation level, and the reference signals corresponding to the second candidate control channel have two determining manners, in the first manner, the reference signals corresponding to the second candidate control channel indicating the high aggregation level are derived from the reference signals corresponding to the first candidate control channel indicating the low aggregation level, for example, the candidate control channel indicating the aggregation level 1, the candidate control channel indicating the aggregation level 2, and the candidate control channel indicating the aggregation level 4 in fig. 2 are overlapped with the CCE occupied by the candidate control channel indicating the aggregation level 8, the reference signal corresponding to the candidate control channel indicating the aggregation level 8 is 107, and the reference signals of all the candidate control channels corresponding to fig. 2 may be set to 107; in a second manner, the same reference signal is used for the portion of the second candidate control channel of the high aggregation level that overlaps with the first candidate control channel of the low aggregation level, the second candidate control channel of the high aggregation level further includes CCE portions that do not overlap with the first candidate control channel of the low aggregation level and CCEs that are also different from the first candidate control channel, and the reference signals for these non-overlapping CCE portions are not limited, and may be, for example, fourth reference signals that are different from the first reference signals, and the fourth reference signals 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, the ith candidate control channel unit included in the third candidate control channel and the ith candidate control channel unit 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 number of candidate control channel units included in the third candidate control channel or the fourth candidate control channel.

For example, in fig. 4, the third candidate control channel and the fourth candidate control channel are candidate control channels with an aggregation level of 8, and it is assumed that the third candidate control channel includes 8 CCEs placed in order, namely CCE0, CCE1, CCE2, CCE3, CCE4, CCE5, CCE6, and CCE7, and the fourth candidate control channel includes 8 CCEs placed in order, namely CCE8, CCE9, CCE10, CCE11, CCE12, CCE13, CCE14, and CCE15, respectively, and if i=0, the 0 th CCE of the third candidate control channel, namely CCE0, and the 0 th CCE of the fourth candidate control channel, namely CCE7, correspond to different reference signals, or if i=2, the 2 nd CCE of the third candidate control channel, namely CCE2, and the 2 nd CCE of the fourth candidate control channel, namely CCE10, correspond to different reference signals, or if i=7, namely CCE7, and the fourth candidate control channel, namely CCE7, correspond to different reference signals, namely, at least one position is increased by at least one random.

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 highest.

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

As an alternative 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 comprise at least one of time-frequency resources, codeword resources and reference signal sequences of a reference signal map. For example, when the above reference signal resource is a time-frequency resource, one CCE may include 6 REGs, at least one REG of the 6 REGs may be mapped with reference signals, one REG is composed of one OFDM symbol of a time domain and 12 subcarriers consecutive in a frequency domain, for example, as shown in fig. 5, one REG includes 12 REs, where 3 rd and 9 th REs map with reference signal 1,2 nd and 8 th REs map with reference signal 2, that is, one REG included in one CCE may map with one or more reference signals, and at least one REG of the 6 REGs included in one CCE may map with reference signals, that is, one CCE may correspond to one or more reference signals. When the above resource of the reference signal is a codeword resource, for example, as shown in fig. 6, the sequences of the reference signal 1 and the reference signal 2 are mapped on the 3 rd RE, the 4 th RE, the 9 th RE and the 10 th RE, the codeword corresponding to the reference signal 1 is {1,1}, and the codeword corresponding to the reference signal 2 is {1, -1}, so that the reference signal 1 and the reference signal 2 can be distinguished on the codeword resource. When the above resource of the reference signal is the reference signal sequence, the reference signal sequence may be a pseudo random sequence, for example, a pseudo random sequence r (m) may be generated according to formula (1).

Wherein,

c(n)＝(x₁(n+N_C)+x₂(n+N_C))mod2

x₁(n+31)＝(x₁(n+3)+x₁(n))mod2

x₂(n+31)＝(x₂(n+3)+x₂(n+2)+x₂(n+1)+x₂(n))mod2

x₁(0)＝1,x₁(n)＝0,n＝1,2,...,30，Representing the maximum number of PRBs in the downlink,/>And N _c is a constant, for example nc=1600. c _init is a configurable parameter (which may be obtained by one of higher layer signaling configuration, synchronization or broadcast signal configuration, or predefined etc.), or may be derived from the identity of the terminal device.

As an alternative embodiment, the plurality of aggregation levels includes 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 indicates that one candidate control channel includes one CCE, aggregation level 2 indicates that one candidate control channel includes two CCEs, aggregation level 4 indicates that one candidate control channel includes 4 CCEs, aggregation level 8 indicates that one candidate control channel includes 8 CCEs, aggregation level 16 indicates that one candidate control channel includes 16 CCEs, and aggregation level 32 indicates that one candidate control channel includes 32 CCEs.

In the embodiment of the application, the same CCE corresponds to the same reference signal, the terminal equipment can utilize the same reference signal to decode the control information on the CCE, for example, the terminal equipment can utilize the first reference signal to carry out channel estimation on the first CCE of the first candidate control channel to obtain the first estimated value, and the terminal equipment determines the first estimated value as the second CCE channel estimated value of the second candidate control channel, so that the second CCE of the second candidate control channel can be prevented from carrying out channel estimation again, the cost of resources can be saved, the utilization rate of the resources can be improved, and the system performance can be further improved.

Fig. 7 illustrates a method 300 of transmitting information according to an embodiment of the present application, and the method 300 may be applied to the communication system 100 illustrated in fig. 1, but the embodiment of the present application is not limited thereto.

S310, the network equipment sends control information to the terminal equipment on a first candidate control channel of a first aggregation level in a plurality of candidate control channels; the terminal equipment receives control information sent by the network equipment on a first candidate control channel of a first aggregation level in a plurality of candidate control channels; the plurality of candidate control channels further comprise a second candidate control channel with a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of control channel unit CCEs, 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, the first reference signal and the second reference signal corresponding to the first candidate control 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 derived from the QCL of the second candidate control channel.

Specifically, 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, 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 with a low aggregation level is a subset of the set of CCEs included in the second candidate control channel with a high aggregation level, the QCL of the first candidate control channel is the same as the QCL of the second candidate control channel, and the QCL is defined as shown in table 1, and the terminal device may perform channel estimation on the channel on the time-frequency resource where the first candidate control channel is located by using the second reference signal in which the first reference signal corresponding to the first candidate control channel exists.

Alternatively, the QCL may also indicate that the fourth reference signal is the same as the second reference signal, or that the port number of the fourth reference signal is the same as the port number of the second reference signal, or that the port number of the fourth reference signal is QCL with the second reference signal resource, or that the resource of the fourth reference signal is QCL with the resource of the second reference signal.

It should be appreciated that in the embodiment of the present application, the QCL parameters of the two reference signals, which are the same for the same candidate control channel, are represented by the QCL, and as shown in table 1, the QCL parameters include at least one of channel average gain (type 1), channel large scale characteristics (type 2), i.e., { average delay, delay spread, doppler frequency offset, doppler frequency spread }, or channel spatial parameters (type 3). For example, the QCL of type 1 for the first control signal and the second control signal described above, 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 QCLs are shown in table 1.

It should be understood that, in the embodiment of the present application, the following expressions indicate that the control information on the first candidate control channel and the control information on the second candidate control channel are both transmitted through the same beam (beam), that is, the reference signal on the first candidate control channel and the reference signal on the second candidate control channel are of the type 3QCL, and the QCL of the first candidate control channel is the same as the QCL of the second candidate control channel; second, QCL of the first candidate control channel is derived from QCL of the second candidate control channel; third, 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, where M beams transmit control information on 4 aggregation level candidate control channels, the 4 aggregation level classes are aggregation level 1, aggregation level 2, aggregation level 4, and aggregation level 8, the CCEs of the first candidate control channel of aggregation level 8 (assumed to be the aforementioned second candidate control channel) include CCEs of the first control channel of aggregation level 1 (assumed to be the aforementioned first candidate control channel), that is, the set of CCEs included in the first candidate control channel of aggregation level 1 is a subset of the set of CCEs included in the first candidate control channel of aggregation level 8, and the QCL of the first candidate control channel is represented by the QCL derivation of the second candidate control channel: 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 transmitted through the same beam 0.

Specifically, the foregoing QCL may be at least one of the three QCL types in table 1, but the embodiment of the present application is not limited thereto, and may 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, 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 is not limited in any way by the embodiments of the present application.

The method of transmitting information according to the embodiment of the present application is described in detail above with reference to fig. 1 to 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 16.

Fig. 9 shows an apparatus 400 for transmitting information according to an embodiment of the present application, where the apparatus 400 includes:

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

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

The plurality of candidate control channels further comprises a second candidate control channel of a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of Control Channel Element (CCE), the first aggregation level is different from the second aggregation level, the first candidate control channel at least comprises a first Control Channel Element (CCE), the second candidate control channel at least comprises a second Control Channel Element (CCE), the first CCE and the second CCE are the same in number in the same control channel resource set, the first CCE and the second CCE correspond to the same first reference signal, the plurality of candidate control channels further comprises a third candidate control channel and a fourth candidate control channel, the third candidate control channel comprises a third CCE corresponding to a second reference signal, the fourth candidate control channel comprises a fourth CCE corresponding to a third reference signal, and the second reference signal is different from the third reference signal.

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, where the first candidate control channel corresponds to the same first reference signal as all CCEs included in the second candidate control channel;

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

As an alternative 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, the CCEs of the second candidate control channel other than the CCEs included in the first candidate control channel use a fourth reference signal, the first reference signal being different from the fourth reference signal;

The determining unit 410 is specifically further configured to:

determining the first reference signal as a 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 alternative 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 comprise at least one of time-frequency resources, codeword resources and reference signal sequences.

It should be appreciated that the apparatus 400 herein is embodied in the form of functional units. The term "unit" herein may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor, etc.) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. In an alternative example, it will be understood by those skilled in the art that the apparatus 400 may be specifically a terminal device in the foregoing method 200 embodiment, and the apparatus 400 may be configured to perform each flow and/or step corresponding to the terminal device in the foregoing method 200 embodiment, which is not repeated herein.

Fig. 10 shows an apparatus 500 for transmitting information according to an embodiment of the present application, where the apparatus 500 includes:

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

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

As an alternative 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 corresponds to the same first reference signal as all CCEs included in the second candidate control channel.

As an alternative 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 CCEs of the second candidate control channel 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.

It should be understood that the apparatus 500 herein is embodied in the form of functional units. The term "unit" herein may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor, etc.) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. In an alternative example, it will be understood by those skilled in the art that the apparatus 500 may be specifically a network device in the foregoing method 200 embodiment, and the apparatus 500 may be configured to perform each flow and/or step corresponding to the network device in the foregoing method 200 embodiment, which is not repeated herein.

Fig. 11 shows an apparatus 600 for transmitting information according to an embodiment of the present application, where the apparatus 600 includes:

a transceiver unit 610, configured to receive control information sent by a network device on a first candidate control channel of a first aggregation level in a plurality of candidate control channels;

The plurality of candidate control channels further comprise a second candidate control channel with a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of control channel unit CCEs, 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, the first reference signal and the second reference signal corresponding to the first candidate control channel are QCL, the third reference signal and the fourth reference signal corresponding to the second candidate control channel 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.

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

Receiving configuration information sent by network equipment before receiving the control information sent by the network equipment on a first candidate control channel of a first aggregation level in the plurality of candidate control channels, wherein the configuration information is used for indicating QCL of the second candidate control channel;

The apparatus 600 further comprises:

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 alternative embodiment, the second reference signal is identical to the fourth reference signal.

As an alternative embodiment, the second reference signal or the fourth reference signal is at least one of a broadcast channel reference signal, a phase tracking reference signal PT-RS, a tracking reference signal T-RS, a demodulation reference signal of a physical downlink shared channel PDSCH, 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 herein is embodied in the form of functional units. The term "unit" herein may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor, etc.) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. In an alternative example, it will be understood by those skilled in the art that the apparatus 600 may be specifically a terminal device in the foregoing method 300 embodiment, and the apparatus 600 may be configured to perform each flow and/or step corresponding to the terminal device in the foregoing method 300 embodiment, which is not repeated herein.

Fig. 12 shows an apparatus 700 for transmitting information according to an embodiment of the present application, where the apparatus 700 includes:

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

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

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

and sending configuration information to the terminal equipment, wherein the configuration information is used for indicating the QCL of the second candidate control channel.

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

It should be understood that the apparatus 700 herein is embodied in the form of functional units. The term "unit" herein may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor, etc.) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. In an alternative example, it will be understood by those skilled in the art that the apparatus 700 may be specifically a network device in the foregoing method 300 embodiment, and the apparatus 700 may be configured to perform each flow and/or step corresponding to the network device in the foregoing method 300 embodiment, which is not repeated herein.

The network device or the terminal device in any of the above apparatus 400, apparatus 500, apparatus 600 and apparatus 700 and the method embodiments fully correspond, and the corresponding steps are performed by corresponding units, for example, the transceiver unit performs the transceiver steps in the method embodiments, and steps other than the transceiver may be performed by the processing module. The function of a specific module may refer to a corresponding method embodiment and will not be described in detail.

The network equipment and the terminal equipment of each scheme have the function of realizing the corresponding steps executed by the network equipment and the terminal equipment in the method; the functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions; for example, the transmitting unit may be replaced by a transmitter, the receiving unit may be replaced by a receiver, and other units, such as a determining unit, etc. may be replaced by a processor, performing the transceiving operations and the associated processing operations in the respective method embodiments, respectively.

Fig. 13 illustrates 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. Wherein the processor 810, the transceiver 820 and the memory 830 are in communication with each other through an internal connection path, the memory 830 is configured to store instructions, and the processor 810 is configured to execute the instructions stored in the memory 830 to control the transceiver 820 to transmit and/or receive signals.

Wherein the processor 810 is configured to determine a reference signal corresponding to each candidate control channel of the plurality of candidate control channels; the transceiver 820 is configured to receive control information sent by a network device on a first candidate control channel of a first aggregation level according to a reference signal corresponding to the first candidate control channel in the plurality of candidate control channels; the plurality of candidate control channels further comprises a second candidate control channel of a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of Control Channel Element (CCE), the first aggregation level is different from the second aggregation level, the first candidate control channel at least comprises a first Control Channel Element (CCE), the second candidate control channel at least comprises a second Control Channel Element (CCE), the first CCE and the second CCE are the same in number in the same control channel resource set, the first CCE corresponds to the same first reference signal as the second CCE, the plurality of candidate control channels further comprises a third candidate control channel and a fourth candidate control channel, the third candidate control channel comprises a third CCE corresponding to a second reference signal, the fourth candidate control channel comprises a fourth CCE corresponding to a third reference signal, and the second reference signal is different from the third reference signal.

It should be understood that the apparatus 800 may be specifically configured as a terminal device in the above-described method 200 embodiment, and may be configured to perform the respective steps and/or flows corresponding to the terminal device in the above-described method 200 embodiment. The memory 830 may optionally 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 information of the device type. The processor 810 may be configured to execute instructions stored in a memory, and when the processor 810 executes instructions stored in the memory, the processor 810 is configured to perform the steps and/or processes of the method 200 embodiments described above with respect to the terminal device.

Fig. 14 shows yet another apparatus 900 for transmitting information according to an embodiment of the present application. The apparatus 900 includes a processor 910, a transceiver 920, and a memory 930. Wherein the processor 910, the transceiver 920, and the memory 930 are in communication with each other through an internal connection path, the memory 930 is configured to store instructions, and the processor 910 is configured to execute the instructions stored in the memory 930 to control the transceiver 920 to transmit signals and/or receive signals.

Wherein the transceiver 920 is configured to send control information to the terminal device on a first candidate control channel of a first aggregation level among the plurality of candidate control channels; the plurality of candidate control channels further comprises a second candidate control channel of a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of Control Channel Element (CCE), the first aggregation level is different from the second aggregation level, the first candidate control channel at least comprises a first Control Channel Element (CCE), the second candidate control channel at least comprises a second Control Channel Element (CCE), the first CCE and the second CCE are the same in number in the same control channel resource set, the first CCE corresponds to the same first reference signal as the second CCE, the plurality of candidate control channels further comprises a third candidate control channel and a fourth candidate control channel, the third candidate control channel comprises a third CCE corresponding to a second reference signal, the fourth candidate control channel comprises a fourth CCE corresponding 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 configured as a network device in the above-described method 200 embodiment, and may be configured to perform the steps and/or flows corresponding to the network device in the above-described method 200 embodiment. The memory 630 may optionally 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 information of the device type. The processor 610 may be configured to execute instructions stored in a memory and when the processor 910 executes instructions stored in a memory, the processor 910 is configured to perform the steps and/or processes of the method 200 embodiments described above with respect to the network device.

Fig. 15 shows yet another apparatus 1000 for transmitting information according to an embodiment of the present application. The apparatus 1000 includes a processor 1010, a transceiver 1020, and a memory 1030. Wherein the processor 1010, the transceiver 1020 and the memory 1030 are in communication with each other via an internal connection, the memory 1030 is configured to store instructions, and the processor 1010 is configured to execute the instructions stored in the memory 1030 to control the transceiver 1020 to transmit signals and/or receive signals.

Wherein the transceiver 1020 is configured to receive control information sent by the network device on a first candidate control channel of a first aggregation level of the plurality of candidate control channels; 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 being determined or defined by a number of control channel element CCEs, the first aggregation level being smaller than the second aggregation level, the first candidate control channel including a set of CCEs that is a subset of the set of CCEs that the second candidate control channel includes, a first reference signal and a second reference signal corresponding to the first candidate control channel being QCL, a third reference signal and a fourth reference signal corresponding to the second candidate control channel being quasi-co-sited QCL, the QCL of the first candidate control channel being derived from the QCL of the second candidate control channel.

It should be understood that the apparatus 1000 may be specifically configured as a terminal device in the foregoing method 300 embodiment, and may be configured to perform the respective steps and/or flows corresponding to the terminal device in the foregoing method 300 embodiment. The memory 1030 may optionally 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 information of the device type. The processor 1010 may be configured to execute instructions stored in a memory, and when the processor 810 executes instructions stored in the memory, the processor 1010 is configured to perform the steps and/or processes of the method 300 embodiments described above with respect to the terminal device.

Fig. 16 illustrates yet another apparatus 1100 for transmitting information according to an embodiment of the present application. The apparatus 1100 includes a processor 1110, a transceiver 1120, and a memory 1130. Wherein the processor 1110, the transceiver 1120 and the memory 1130 are in communication with each other through an internal connection path, the memory 1130 is configured to store instructions, and the processor 1110 is configured to execute the instructions stored in the memory 1130 to control the transceiver 1120 to transmit signals and/or receive signals.

Wherein the transceiver 1120 is configured to send control information to the terminal device on a first candidate control channel of a first aggregation level of the plurality of candidate control channels; 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 being determined or defined by a number of control channel element CCEs, the first aggregation level being smaller than the second aggregation level, the first candidate control channel including a set of CCEs that is a subset of the set of CCEs that the second candidate control channel includes, a first reference signal and a second reference signal corresponding to the first candidate control channel being QCL, a third reference signal and a fourth reference signal corresponding to the second candidate control channel being quasi-co-sited QCL, the QCL of the first candidate control channel being derived from the QCL of the second candidate control channel.

It should be appreciated that the apparatus 1100 may be embodied as a network device in the above-described method 300 embodiment, and may be configured to perform the steps and/or flows corresponding to the network device in the above-described method 300 embodiment. The memory 1130 may optionally 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 information of the device type. The processor 1110 may be configured to execute instructions stored in a memory, and when the processor 1110 executes the instructions stored in the memory, the processor 1110 is configured to perform the steps and/or processes of the method 300 embodiments described above with respect to the network device.

It should be appreciated that the above-described transceiver may include a transmitter and a receiver. The transceiver may further include antennas, the number of which may be one or more. The memory may be a separate device or may be integrated into the processor. The individual devices or parts of the devices described above may be integrated into a chip, such as a baseband chip.

It should also be appreciated that in embodiments of the present application, the processor of the above apparatus may be a central processing unit (central processing unit, CPU), which may also be other general purpose processors, digital signal processors (DIGITAL SIGNAL processors, DSPs), application Specific Integrated Circuits (ASICs), field-programmable gate arrays (FPGAs) 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 implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software elements in the processor for execution. The software elements may be located in a random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor executes instructions in the memory to perform the steps of the method described above in conjunction with its hardware. To avoid repetition, a detailed description is not provided herein.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL), or wireless (e.g., infrared, wireless, microwave, etc.) means, the computer-readable storage medium may be any available medium that can be accessed by the 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 may be magnetic media, (e.g., floppy disk, hard disk, tape), optical media (e.g., DVD), or semiconductor media (e.g., solid state disk (solid state STATE DISK, SSD)), etc.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of transmitting information, the method comprising:

The terminal equipment determines a reference signal corresponding to each candidate control channel in a plurality of candidate control channels;

The terminal equipment receives control information sent by the network equipment on a first candidate control channel according to a reference signal corresponding to the first candidate control channel of a first aggregation level in the plurality of candidate control channels;

The terminal equipment receives control information sent by the network equipment on a second candidate control channel of a second aggregation level in the plurality of candidate control channels according to the reference signal corresponding to the first candidate control channel;

The plurality of candidate control channels further comprise a second candidate control channel of the second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of Control Channel Element (CCE), the first aggregation level is different from the second aggregation level, the first candidate control channel at least comprises a first Control Channel Element (CCE), the second candidate control channel at least comprises a second Control Channel Element (CCE), the first CCE and the second CCE 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.

2. The method of claim 1, 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, the first candidate control channel corresponding to the same first reference signal as all CCEs included in the second candidate control channel;

The method for determining the reference signal corresponding to each candidate control channel in the plurality of candidate control channels by the terminal equipment comprises the following steps:

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 of claim 1, 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, the CCEs of the second candidate control channel other than the CCEs included in the first candidate control channel using a fourth reference signal, the first reference signal being different from the fourth reference signal;

The terminal equipment 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 reference signals of the second candidate control channel.

4. A method according to any of claims 1 to 3, characterized in that the resources of the first reference signal comprise at least one of time-frequency resources, codeword resources and reference signal sequences.

5. A method of transmitting information, the method comprising:

The network equipment sends control information to the terminal equipment on a first candidate control channel of a first aggregation level in a plurality of candidate control channels;

the network device sending control information to the terminal device on a second candidate control channel of a second aggregation level of the plurality of candidate control channels;

6. The method of claim 5, 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, the first candidate control channel corresponding to the same first reference signal as all CCEs included in the second candidate control channel.

7. The method of claim 5, 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, wherein CCEs of the second candidate control channel other than CCEs included in the first candidate control channel use a fourth reference signal, and wherein the first reference signal is different from the fourth reference signal.

8. The method according to any of claims 5 to 7, wherein the resources of the first reference signal comprise at least one of time-frequency resources, codeword resources and reference signal sequences.

9. A method of transmitting information, the method comprising:

The terminal equipment receives control information sent by the network equipment on a first candidate control channel of a first aggregation level in a plurality of candidate control channels;

The plurality of candidate control channels further comprise a second candidate control channel with a second aggregation level, the first aggregation level and the second aggregation level are determined or defined by the number of Control Channel Elements (CCEs), 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, the first reference signal and the second reference signal corresponding to the first candidate control channel are QCL, the third reference signal and the fourth reference signal corresponding to the second candidate control channel are quasi-co-sited QCL, and the QCL of the first candidate control channel is derived from the QCL of the second candidate control channel.

10. The method of claim 9, wherein prior to the terminal device receiving control information sent by a network device on a first candidate control channel of a first aggregation level of the plurality of candidate control channels, the method further comprises:

The terminal equipment receives configuration information sent by network equipment, wherein the configuration information is used for indicating QCL of the second candidate control channel;

the terminal equipment determines QCL of the second candidate control channel according to the configuration information;

and the terminal equipment determines the QCL of the first candidate control channel according to the QCL of the second candidate control channel.

11. The method according to claim 9 or 10, wherein the second reference signal or the fourth reference signal is at least one of a broadcast channel reference signal, a phase tracking reference signal PT-RS, a tracking reference signal T-RS, a demodulation reference signal of a physical downlink shared channel PDSCH, a common reference signal CRS, a channel state information reference signal CSI-RS, or a synchronization signal.

12. A method of transmitting information, the method comprising:

13. The method according to claim 12, wherein the method further comprises:

And the network equipment sends configuration information to the terminal equipment, wherein the configuration information is used for indicating the QCL of the second candidate control channel.

14. The method according to claim 12 or 13, wherein the second reference signal or the fourth reference signal is at least one of a broadcast channel reference signal, a phase tracking reference signal PT-RS, a tracking reference signal T-RS, a demodulation reference signal of PDSCH, a common reference signal CRS, a channel state information reference signal CSI-RS or a synchronization signal.

15. An apparatus for transmitting information, the apparatus comprising:

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

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

16. The apparatus of claim 15, 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, the first candidate control channel corresponding to the same first reference signal as all CCEs included in the second candidate control channel;

The determining unit is specifically configured to: the first reference signal is determined as a reference signal for the first candidate control channel and the second candidate control channel.

17. The apparatus of claim 15, 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, the CCEs of the second candidate control channel other than the CCEs included in the first candidate control channel using a fourth reference signal, the first reference signal being different from the fourth reference signal;

The determining unit is specifically further configured to:

18. An apparatus for transmitting information, the apparatus comprising:

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

the transceiver unit is further configured to send control information to the terminal device on a second candidate control channel of a second aggregation level among the plurality of candidate control channels;

19. The apparatus of claim 18, 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, the first candidate control channel corresponding to the same first reference signal as all CCEs included in the second candidate control channel.

20. The apparatus of claim 18, 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, wherein CCEs of the second candidate control channel other than CCEs included in the first candidate control channel use a fourth reference signal, and wherein the first reference signal is different from the fourth reference signal.

21. An apparatus for transmitting information, the apparatus comprising:

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

22. The apparatus of claim 21, wherein the transceiver unit is further configured to:

the apparatus further comprises:

and the determining unit is used for determining the QCL of the second candidate control channel according to the configuration information and determining the QCL of the first candidate control channel according to the QCL of the second candidate control channel.

23. The apparatus of claim 21 or 22, wherein the second reference signal or the fourth reference signal is at least one of a broadcast channel reference signal, a phase tracking reference signal PT-RS, a tracking reference signal T-RS, a demodulation reference signal of a physical downlink shared channel PDSCH, a common reference signal CRS, a channel state information reference signal CSI-RS, or a synchronization signal.

24. An apparatus for transmitting information, the apparatus comprising:

25. The apparatus of claim 24, wherein the transceiver unit is further configured to:

26. The apparatus of claim 24 or 25, wherein the second reference signal or the fourth reference signal is at least one of a broadcast channel reference signal, a phase tracking reference signal PT-RS, a tracking reference signal T-RS, a demodulation reference signal of PDSCH, a common reference signal CRS, a channel state information reference signal CSI-RS, or a synchronization signal.