CN107889222B

CN107889222B - Signal transmission method, terminal device, network device and communication system

Info

Publication number: CN107889222B
Application number: CN201610865499.1A
Authority: CN
Inventors: 刘建琴
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-09-29
Filing date: 2016-09-29
Publication date: 2022-03-08
Anticipated expiration: 2036-09-29
Also published as: WO2018059400A1; CN107889222A

Abstract

The invention provides a signal transmission method, a terminal device, a network device and a communication system. The signal transmission method comprises the following steps: the terminal equipment determines a first resource allocation mode, wherein the first resource allocation mode is a resource allocation mode used by the network equipment for sending downlink signals to the terminal equipment; the terminal equipment sends first indication information to the network equipment, wherein the first indication information is used for indicating a first resource configuration mode; and the terminal equipment receives the downlink signal. The signal transmission method, the terminal equipment, the network equipment and the communication system provided by the invention can quickly recover the link between the network equipment and the terminal equipment, and finally improve the transmission performance of the whole communication system.

Description

Signal transmission method, terminal device, network device and communication system

Technical Field

The present invention relates to the field of wireless communications. And more particularly, to a signal transmission method, a terminal device, a network device, and a communication system in the field of wireless communication.

Background

In a wireless communication network, in order to overcome a large propagation loss caused by a high frequency band, a signal transmission mechanism based on a beam forming technology is adopted to compensate the loss in a signal propagation process through a large antenna gain.

The beamforming technology includes a transmit beamforming technology and a receive beamforming technology. The beamforming includes any one of beamforming in an analog domain, beamforming in a baseband domain, and hybrid beamforming.

The terminal device may select the optimal one or more receive shaped beams based on channel quality measurements of multiple demodulation reference signals of the network device under different transmit shaped beams.

Under certain conditions, for example, when the terminal device moves or rotates or the propagation condition of the link deteriorates due to the movement of surrounding objects, the transmitting shaped beam of the network device or the receiving shaped beam of the terminal device changes, the terminal device and/or the network device needs to re-determine the shaped beam to re-recover the link between the network device and the terminal device.

When performing beamforming, the network device needs to send reference signals to the terminal device, so that the terminal device and/or the network device can perform beamforming according to the reference signals. At this time, how the network device sends the reference signal to the terminal device becomes a problem to be solved urgently.

Disclosure of Invention

The invention provides a signal transmission method, a terminal device, a network device and a communication system, which can quickly recover a link between the network device and the terminal device and finally improve the transmission performance of the whole communication system.

In a first aspect, the present invention provides a signal transmission method, including: the method comprises the steps that terminal equipment determines a first resource configuration mode, wherein the first resource configuration mode is a configuration mode of resources used by network equipment for sending downlink signals to the terminal equipment; the terminal equipment sends first indication information to the network equipment, wherein the first indication information is used for indicating a first resource configuration mode; and the terminal equipment receives the downlink signal.

In the signal transmission method, the terminal device sends the indication information to the network device to indicate the configuration mode of the resource which the network device expects to send the downlink signal to, so that the network device can determine the configuration mode of the resource which the network device actually sends the downlink signal to the terminal device by referring to the indication of the terminal device. And then the terminal equipment receives the downlink signal sent by the network equipment by using the determined resource configuration mode. The configuration mode of the resource used by the downlink signal received by the terminal equipment can be determined after the network equipment and the terminal equipment interact, namely the indication is referred, so that the network equipment and/or the terminal equipment can quickly and reasonably adjust the shaped beam related to the downlink signal, and finally the transmission performance of the whole communication system is improved.

In one possible implementation manner, the signal transmission method further includes: the terminal device receives second indication information sent by the network device, wherein the second indication information is used for indicating a second resource allocation mode, and the second resource allocation mode is a resource allocation mode which is determined by the network device according to the first indication information and is used for sending the downlink signal to the terminal device; wherein, the receiving of the downlink signal by the terminal device includes: and the terminal equipment receives the downlink signal sent by the network equipment by using the second resource configuration mode.

In the signal transmission method, the configuration mode of the resource used by the downlink signal received by the terminal device from the network device may be: and the network equipment determines the resource configuration mode according to the resource configuration mode expected by the terminal equipment. Then the terminal device receives the indication information which is sent by the network device and used for indicating the resource configuration mode determined by the network device, and then can accurately receive the downlink signal sent by the network device according to the indication information,

in a possible implementation manner, the first resource allocation manner and/or the second resource allocation manner is a resource multiplexing manner of k downlink signals and/or time-frequency resource positions of k downlink signals, and k is an integer greater than 1.

In a possible implementation manner, the resource multiplexing manner includes a multiplexing manner of time domain resources and/or a multiplexing manner of frequency domain resources.

In a possible implementation manner, the second resource allocation manner is the first resource allocation manner.

In a possible implementation manner, the receiving, by the terminal device, the second indication information sent by the network device includes: and the terminal equipment receives the second indication information sent by the network equipment through a high-level signaling or a physical layer signaling, wherein the high-level signaling comprises a Radio Resource Control (RRC) signaling, and the physical layer signaling comprises a Downlink Control Information (DCI) signaling.

In a possible implementation manner, the sending, by the terminal device, the first indication information to the network device includes: and the terminal equipment sends the first indication information to the network equipment on the resources which are pre-configured for the terminal equipment by the network equipment.

In a second aspect, the present invention provides a signal transmission method, including: the method comprises the steps that network equipment receives first indication information sent by terminal equipment, wherein the first indication information is used for indicating a first resource configuration mode, and the first resource configuration mode is a configuration mode of resources used by the network equipment for sending downlink signals to the terminal equipment; and the network equipment sends the downlink signal to the terminal equipment.

In the signal transmission method, the network device receives the indication information sent by the terminal device, acquires the configuration mode of the resource which the terminal device expects the network device to send the downlink signal to use, and then the network device can determine the configuration mode of the resource which is actually used for sending the downlink signal to the terminal device by referring to the indication of the terminal device. Because the configuration mode of the resource used by the network device for sending the downlink signal can be determined after the network device interacts with the terminal device, namely the indication is referred, the network device and/or the terminal device can quickly and reasonably adjust the shaped beam related to the downlink signal, and finally the transmission performance of the whole communication system is improved.

In one possible implementation manner, the signal transmission method further includes: the network equipment determines a second resource configuration mode according to the first indication information; the network device sends second indication information to the terminal device, where the second indication information is used to indicate the second resource allocation manner, and the second resource allocation manner is a resource allocation manner used by the network device to send the downlink signal to the terminal device; wherein, the sending, by the network device, the downlink signal to the terminal device includes: and the network equipment sends the downlink signal to the terminal equipment by using the second resource configuration information.

In the signal transmission method, the configuration mode of the resource actually used by the network device to send the downlink signal to the terminal device may be: and the network equipment determines the resource configuration mode according to the resource configuration mode expected by the terminal equipment. Then the network device sends indication information for indicating the resource configuration mode determined by the network device to the terminal device, so that the terminal device can accurately receive the downlink signal sent by the network device according to the indication information,

In a possible implementation manner, the sending, by the network device, the second indication information to the terminal device includes: and the network equipment sends the second indication information to the terminal equipment through a high-level signaling or a physical layer signaling, wherein the high-level signaling comprises a Radio Resource Control (RRC) signaling, and the physical layer signaling comprises a Downlink Control Information (DCI) signaling.

Optionally, there may be no step in which the terminal device sends the first indication information to the network device, and the network device directly sends the second indication information to the terminal device. The method comprises the following steps: and the network equipment sends the second indication information to the terminal equipment through a high-level signaling or a physical layer signaling, wherein the high-level signaling comprises a Radio Resource Control (RRC) signaling, and the physical layer signaling comprises a Downlink Control Information (DCI) signaling. The second indication information is used to indicate the second resource allocation manner, where the second resource allocation manner is a resource allocation manner used by the network device to send the downlink signal to the terminal device.

In a possible implementation manner, the receiving, by the network device, first indication information sent by a terminal device includes: and the network equipment receives the first indication information sent by the terminal equipment through the resource pre-configured for the terminal equipment by the network equipment.

In a third aspect, the present invention provides a signal transmission method, including: the network equipment determines a first resource used for transmitting a demodulation reference signal and a second resource used for transmitting data, wherein the demodulation reference signal is a reference signal used for demodulating the data; the network device sends control information to a terminal device, wherein the control information comprises first indication information and second indication information, the first indication information is used for indicating the first resource, and the second indication information is used for indicating the second resource.

In the signal transmission method, the network equipment indicates the first resource used by the network equipment for sending data and also indicates the demodulation reference signal used for sending and demodulating the data, so that when the downlink data is demodulated or the data is received, channel estimation can be carried out according to the demodulation reference signal, the channel state information of the demodulation reference signal can be obtained in time, further, the delay between the newly obtained channel state information and the downlink data to be sent is smaller, the channel state information can be matched with the channel state information at the next data transmission moment, and a link can be recovered more quickly and better.

In one possible implementation, the first resources and the second resources include frequency domain resources, and the frequency domain resources in the first resources include frequency domain resources in the second resources.

In a possible implementation manner, the first resource and the second resource include a time domain resource, the first resource includes N symbols, and N is a positive integer.

In one possible implementation manner, the signal transmission method further includes: the network device transmits M of the demodulation reference signals on the N symbols, M being a positive integer,

in one possible implementation manner, the signal transmission method further includes: the network device receives channel state information sent by the terminal device, wherein the channel state information comprises at least one of the following information: channel quality information of the M demodulation reference signals, indexes of T demodulation reference signals among the M demodulation reference signals, and signal quality information of the T demodulation reference signals; wherein T is a positive integer less than or equal to M.

In a possible implementation manner, the channel state information further includes indication information for indicating reception confirmation information of the data.

That is, the network device may receive the channel state information of the demodulation reference signal sent by the terminal device while receiving the indication information sent by the terminal device for indicating the reception state of the data, so that the channel state information fed back by the terminal device may be received more quickly.

In a possible implementation manner, the control information further includes precoding matrix indicator PMI information for transmitting the data.

In a fourth aspect, the present invention provides a signal transmission method, including: the terminal equipment receives control information sent by network equipment, wherein the control information comprises first indication information and second indication information, the first indication information is used for indicating the first resource, and the second indication information is used for indicating the second resource; and the network equipment determines the first resource and the second resource according to the control information.

In the signal transmission method, when receiving the indication information indicating the first resource used for sending the data, the terminal device also receives the indication information indicating the demodulation reference signal used for sending and demodulating the data, so that when demodulating the downlink data, or receiving the data, channel estimation can be performed according to the demodulation reference signal, the channel state information of the demodulation reference signal can be obtained in time, and further the delay between the newly obtained channel state information and the downlink data to be sent is smaller, so that the channel state information can be matched with the channel state information at the next data transmission moment, and the link can be recovered more quickly and better.

In one possible implementation manner, the signal transmission method further includes: the terminal device receives M demodulation reference signals sent by the network device on the N symbols, wherein M is a positive integer,

in one possible implementation manner, the signal transmission method further includes: the terminal device sends channel state information to the network device, wherein the channel state information comprises at least one of the following information: channel quality information of the M demodulation reference signals, indexes of T demodulation reference signals among the M demodulation reference signals, and signal quality information of the T demodulation reference signals; wherein T is a positive integer less than or equal to M.

In a possible implementation manner, the control information further includes precoding matrix indicator information PMI used for transmitting the data.

In a fifth aspect, the present invention provides a terminal device, where the terminal device includes a module configured to perform the signal transmission method in the first aspect or any one of the possible implementation manners of the first aspect.

In a sixth aspect, the present invention provides a network device, which includes a module configured to execute the signal transmission method in the second aspect or any one of the possible implementation manners of the second aspect.

In a seventh aspect, the present invention provides a communication system comprising the terminal device of the fifth aspect and the network device of the sixth aspect.

In an eighth aspect, the present invention provides a network device, where the network device includes a module configured to perform the signal transmission method in any one of the third aspect and the possible implementation manners of the third aspect.

In a ninth aspect, the present invention provides a terminal device, where the terminal device includes a module configured to execute the signal transmission method in any one of the possible implementation manners of the fourth aspect or the fourth aspect.

In a tenth aspect, the present invention provides a communication system comprising the network device in the eighth aspect and the terminal device in the ninth aspect.

In an eleventh aspect, the present invention provides a terminal device comprising a transceiver, a processor, and a memory, the memory configured to store code, the processor configured to execute the code in the memory, and the transceiver configured to communicate with other devices. When the code is executed, the processor invokes the transceiver to implement the signal transmission method of the first aspect or any one of the possible implementations of the first aspect.

In a twelfth aspect, the present invention provides a network device comprising a transceiver, a processor, and a memory, the memory configured to store code, the processor configured to execute the code in the memory, and the transceiver configured to communicate with other devices. When the code is executed, the processor invokes the transceiver to implement the signal transmission method of the second aspect or any one of the possible implementations of the second aspect.

In a thirteenth aspect, the present invention provides a communication system comprising the terminal device of the eleventh aspect and the network device of the twelfth aspect.

In a fourteenth aspect, the present invention provides a network device comprising a transceiver, a processor, and a memory, the memory configured to store code, the processor configured to execute the code in the memory, and the transceiver configured to communicate with other devices. When the code is executed, the processor invokes the transceiver to implement the signal transmission method in the third aspect or any one of the possible implementations of the third aspect.

In a fifteenth aspect, the present invention provides a terminal device comprising a transceiver, a processor and a memory, the memory storing code, the processor executing the code in the memory, and the transceiver being configured to communicate with other devices. When the code is executed, the processor invokes the transceiver to implement the signal transmission method in the fourth aspect or any one of the possible implementations of the fourth aspect.

In a sixteenth aspect, the present invention provides a communication system comprising the network device of the fourteenth aspect and the terminal device of the fifteenth aspect.

In a seventeenth aspect, the present invention provides a computer-readable medium storing program code for execution by a terminal device, the program code including instructions for performing the signal transmission method in the first aspect or any one of the possible implementations of the first aspect.

In an eighteenth aspect, the present invention provides a computer-readable medium storing program code for execution by a network device, the program code including instructions for performing the signal transmission method in the second aspect or any one of the possible implementations of the second aspect.

In a nineteenth aspect, the present invention provides a computer-readable medium storing program code for execution by a network device, the program code including instructions for performing the signal processing method in the third aspect or any one of the possible implementations of the third aspect.

In a twentieth aspect, the present invention provides a computer-readable medium storing program code for execution by a terminal device, the program code including instructions for performing the signal transmission method of the fourth aspect or any one of the possible implementations of the fourth aspect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic architecture diagram of a system to which the signal transmission method of the embodiment of the present invention can be applied.

Fig. 2 is a schematic flow chart of a signal transmission method of an embodiment of the present invention.

Fig. 3 is a schematic flow chart of a signal transmission method of an embodiment of the present invention.

Fig. 4 is a schematic configuration diagram of a terminal device of the embodiment of the present invention.

Fig. 5 is a schematic configuration diagram of a network device of the embodiment of the present invention.

Fig. 6 is a schematic configuration diagram of a network device of the embodiment of the present invention.

Fig. 7 is a schematic configuration diagram of a terminal device of the embodiment of the present invention.

Fig. 8 is a schematic configuration diagram of a terminal device of the embodiment of the present invention.

Fig. 9 is a schematic configuration diagram of a network device of the embodiment of the present invention.

Fig. 10 is a schematic configuration diagram of a network device of the embodiment of the present invention.

Fig. 11 is a schematic configuration diagram of a terminal device of the embodiment of the present invention.

Fig. 12 is a schematic architecture diagram of a communication system of an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

For ease of understanding, an exemplary diagram of a system architecture in which the signal transmission method of the embodiments of the present invention can be implemented is described generally. It should be understood that the embodiments of the present invention are not limited to the system architecture shown in fig. 1, and moreover, the apparatus in fig. 1 may be hardware, or may be software divided from functions, or a combination of the two.

Some examples of the wireless communication system shown in fig. 1 may be a Long Term Evolution (LET) system, a Wideband Code Division Multiple Access (WCDMA) system, or a future 5G system.

The wireless communication system described in fig. 1 may include a network device 110 and a terminal device 120, and the network device 110 and the terminal device 120 may communicate with each other. Network device 110 may be used to access terminal device 120 into a wireless communication network.

In this embodiment of the present invention, a specific example of the network device 110 is a Base Station, such as a Base Transceiver Station (BTS) in a Global System for Mobile communication (GSM) System or a Code Division Multiple Access (CDMA) System, a Base Station (NodeB) in a Wideband Code Division Multiple Access (WCDMA) System, an evolved Node B (eNB or eNodeB) in an LTE System, or a Base Station device, a small Base Station device in a future 5G network, and the present invention is not limited thereto.

In the embodiment of the present invention, the terminal device 120 may also be generally referred to as a User Equipment (UE). A terminal device, which may also be referred to as 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, may communicate with one or more Core networks (Core networks) via a Radio Access Network (RAN). The terminal device may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication capability, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a future 5G network, and so on.

Network device 110 may transmit a downlink signal to terminal device 120 through one or more shaped beams, and terminal device 120 may receive the downlink signal sent by network device 110 through an omni-directional shaped beam or a directional shaped beam.

In some cases, for example, when a receiving channel of the terminal device changes due to movement of the terminal device, rotation of the terminal device, or environmental change of an ambient environment, and a transmit shaped beam of the network device is no longer suitable for and matches a receive shaped beam of the terminal device, the network device needs to adjust the transmit shaped beam, or the terminal device needs to adjust the receive shaped beam, or the network device adjusts the transmit shaped beam and the terminal device adjusts the receive shaped beam at the same time.

The network device adjusting the transmit shaped beam and/or the terminal device adjusting the receive shaped beam both require the network device to transmit downlink signals based on a plurality of shaped beams, for example, the downlink signals may be downlink reference signals, so that the terminal device can measure channel quality based on the signals, and further the terminal device and/or the network device may adjust the corresponding transmit shaped beam and/or receive shaped beam according to the channel quality of the signals.

Therefore, the invention provides a new signal transmission method, and network equipment, terminal equipment and a communication system for realizing the new signal transmission method, so that the network equipment can send downlink signals according to the indication of the terminal equipment, and further the network equipment and/or the terminal equipment can reasonably and quickly adjust related shaped beams, and finally the transmission performance of the whole communication system is improved.

Fig. 2 is a schematic flow chart of a signal transmission method of one embodiment of the present invention applied to the communication system shown in fig. 1. It should be understood that fig. 2 shows steps or operations of a signal transmission method, but these steps or operations are only examples, and other operations or variations of the respective operations in fig. 2 may also be performed by the embodiments of the present invention. Moreover, it is possible that not all of the operations in FIG. 2 may be performed by an embodiment of the invention.

S210, the terminal equipment determines a first resource allocation mode.

The first resource allocation mode is an allocation mode of resources used by the network equipment for sending downlink signals to the terminal equipment.

Specifically, the Downlink signal may be a Downlink reference signal, or may be a Downlink signal transmitted on a Physical Downlink Shared Channel (PDSCH), a Physical Downlink Control Channel (PDCCH), or another Downlink Channel.

Different kinds of reference signals are commonly used in communication systems. One type of Reference Signal is used for channel quality measurement, such as RRM (Radio Resource Management) related measurement, so that measurement of user channel quality and Cell selection and handover can be achieved, and the type of Reference Signal is specifically Cell-specific Reference Signal (CRS).

Another type of reference information is used for measurement of channel state information, thereby enabling scheduling of terminal devices. Specifically, the terminal device may obtain Channel State Information (CSI) based on Channel quality measurement on a Channel State Information Reference Signal (CSI-RS).

The configuration mode of the resource used by the network device to send the downlink signal to the terminal device may specifically be a multiplexing mode of the resource used by the network device to send the downlink signal to the terminal device and/or a location of the resource used by the downlink signal, or an index of the resource configuration mode. In addition, the configuration manner of the resource used by the downlink signal does not exclude that other resources may be configured, optionally, for example, the number of ports of the reference signal resource or the number of time domain symbols of the reference signal resource.

More specifically, the multiplexing manner of the resources may include a manner in which k downlink signals are multiplexed through time domain resources, a manner in which k downlink signals are multiplexed through frequency domain resources, or a manner in which k downlink signals are multiplexed through time domain resources and frequency domain resources. Wherein k is an integer greater than or equal to 2.

K may also be 1, that is, the first resource allocation manner and/or the second resource allocation manner may be a location of a resource used by the network device to send the downlink signal to the terminal device and/or an index of the resource allocation manner.

Optionally, when the currently received shaped beam of the terminal device is an omnidirectional shaped beam and the quality of the received signal is poor, the terminal device may adjust or switch to a directional shaped beam. When the terminal device is adjusted to receive the reference signal sent by the network device by using the directional shaped beam, the network device may send k downlink signals to the terminal device in a time division multiplexing manner and/or a frequency division multiplexing manner, where the k downlink signals correspond to the k sending shaped beams. Namely, the first resource allocation manner at this time is time division multiplexing and/or frequency division multiplexing. When the currently received shaped beam of the terminal device is the directional shaped beam, the terminal device may send first indication information indicating that the k downlink signals are time division multiplexing and/or frequency division multiplexing to the network device, so that the network device resends the downlink signals according to the indication information.

Optionally, when the currently received shaped beam of the terminal device is a directional shaped beam and the quality of the received signal is poor at this time, the terminal device may adjust or switch to an omnidirectional shaped beam. When the terminal device is adjusted to receive the reference signal sent by the network device by using the omnidirectional shaped beam, the network device may send k downlink signals to the terminal device in a time division multiplexing manner, where the k downlink signals correspond to the k sending shaped beams. That is, the first resource allocation manner at this time is time division multiplexing. When the currently received shaped beam of the terminal device is the omnidirectional shaped beam, the terminal device may send first indication information indicating that the k downlink signals are time division multiplexed to the network device, so that the network device resends the downlink signals according to the indication information.

S220, the terminal device sends first indication information to the network device, wherein the first indication information is used for indicating a first resource allocation mode. Correspondingly, the network equipment receives the first indication information sent by the terminal equipment.

Optionally, the resource used when the terminal device sends the first indication information to the network device may be a resource configured or allocated by the network device for the terminal device in advance. The resource pre-configured or allocated for the terminal device by the network device may include a time domain resource and/or a frequency domain resource. Optionally, the first indication information may be carried in a generic scheduling request message. Optionally, the network device may pre-configure or allocate the resource for the terminal device through high layer signaling or physical layer dynamic signaling. Optionally, the higher layer signaling may specifically be Radio Resource Control (RRC) signaling.

And S230, the network equipment sends a downlink signal to the terminal equipment. Correspondingly, the terminal device receives a downlink signal sent by the network device.

When the network device sends the downlink signal to the terminal device, the actually used resource allocation manner may be the first resource allocation manner indicated by the first indication information, or may be another new resource allocation manner.

Regardless of whether the resource allocation manner determined by the network device is the first resource allocation manner or another resource allocation manner, the resource allocation manner determined by the network device to be used finally may be determined by the network device according to the first indication information or may not be determined according to the first indication information.

In the embodiment of the present invention, a resource allocation manner that is actually used by the network device to send the downlink signal to the terminal device is collectively referred to as a second resource allocation manner. Correspondingly, in the embodiment of the present invention, the first resource allocation indicated by the first indication information sent by the terminal device may be referred to as the resource allocation that the terminal device expects the network device to send the downlink signal to the terminal device.

If the network device actually uses the first resource allocation mode to send the downlink signal to the terminal device, it indicates that the second resource allocation mode is the first resource allocation mode.

As can be seen from the above, the signal transmission method performed by the network device can be described as follows: and the network equipment determines a second resource configuration mode after receiving the first indication information of the terminal equipment. And sending the downlink signal to the terminal equipment by using the second resource configuration mode. Correspondingly, after the terminal device sends the first indication information to the network device, the terminal device receives a downlink signal sent by the network device by using the second resource configuration mode.

Optionally, the second resource configuration manner may be determined by the network device according to the first indication information. Namely, the network device sends the downlink signal to the terminal device according to the first indication information. At this time, the signal transmission method shown in fig. 2 may further include steps S222 and S224.

S222, after receiving the first indication information of the terminal device, the network device may determine the second resource allocation manner according to the first indication information.

S224, the network device configures the downlink signal resource according to the second resource configuration mode.

At this time, in S230, specifically, the network device transmits the downlink signal to the terminal device by using the resource configured by the network device in S224.

That is to say, the network device may determine, according to a resource allocation manner that the terminal device expects to use for transmitting the downlink signal, a resource allocation manner that the network device will actually use for transmitting the downlink signal, and perform corresponding resource allocation and use of the allocated resource for transmitting the reference signal to the terminal device.

For example, the network device may determine the first resource allocation manner as the second resource allocation manner, or may determine a more optimal or suitable second resource allocation manner again according to the first resource allocation manner and in combination with other information, for example, requirements of other users sharing the downlink signal resource with the terminal device.

In the embodiment of the present invention, because the configuration mode of the resource actually used by the network device to send the downlink signal to the terminal device is the resource configuration mode expected by the terminal device, the signal transmission method can enable the network device to configure the resource of the downlink signal according to the indication of the terminal device and send the appropriate downlink signal. Therefore, the terminal equipment can rapidly carry out beam forming according to the more proper downlink signals, and then a link between the network equipment and the terminal equipment can be rapidly recovered, and finally the transmission performance of the communication system is improved.

In this embodiment of the present invention, when the network device determines to send the downlink signal to the terminal device by using the second resource allocation manner, optionally, as shown in S226 in fig. 2, the network device may send second indication information to the terminal device, where the second indication information is used to indicate the second resource allocation manner. Correspondingly, the terminal device receives the second indication information sent by the network device, that is, the terminal device receives the second indication information sent by the network device after sending the first indication information.

If the second resource allocation manner is the first resource allocation manner, the second indication information sent by the network device to the terminal device actually indicates the first resource allocation manner, that is, the network device may notify the terminal device of: and the network equipment confirms that the resource allocation mode indicated by the terminal equipment is used for sending the downlink signal to the terminal equipment.

If the second resource allocation mode is not the first resource allocation mode, the network device may notify the terminal device through the second information: and the network equipment sends the actually used resource configuration mode of the downlink signal to the terminal equipment, so that the terminal equipment can receive the downlink signal sent by the network equipment according to the second resource configuration mode.

Optionally, the network device may send the second indication information to the terminal device through higher layer signaling or physical layer dynamic signaling. Specifically, the higher layer signaling may be RRC signaling, and the physical layer dynamic signaling may be Downlink Control Information (DCI) signaling.

Optionally, the second indication information may be carried in a resource configuration instruction sent by the network device to the terminal device, where the resource configuration instruction is used to indicate information of a resource used when the network device sends a downlink signal to the terminal device, such as time-frequency resource information used for sending the downlink signal.

Specifically, the network device may add an identification bit in the resource configuration instruction to indicate whether the current resource configuration mode is the first resource configuration mode or the second resource configuration mode, or the network device may implicitly indicate the first resource configuration mode or the second resource configuration mode through different configurations of the downlink signal.

The invention also provides another signal transmission method capable of rapidly recovering the link between the network equipment and the terminal equipment. A schematic flow chart of the signal transmission method is shown in fig. 3.

It should be understood that fig. 3 shows steps or operations of a signal transmission method, but these steps or operations are only examples, and other operations or variations of the respective operations in fig. 3 may also be performed by the embodiments of the present invention. Further, it is possible that not all of the operations in fig. 3 are performed.

S310, the network device determines a first resource for transmitting a demodulation reference signal and a second resource for transmitting data. The demodulation reference signal is a reference signal used for demodulating the data.

Alternatively, the short name of the DeModulation Reference Signal may be DMRS, and the full name of the DeModulation Reference Signal may be DeModulation Reference Signal. The demodulation reference signal may be an uplink demodulation reference signal or a downlink demodulation reference signal. Correspondingly, the data may be uplink data or downlink data.

S320, the network device sends control information to the terminal device, wherein the control information comprises first indication information and second indication information, the first indication information is used for indicating the first resource, and the second indication information is used for indicating the second resource. Accordingly, the terminal device receives the control information transmitted by the network device.

Specifically, the Control Information may be Downlink Control Information (DCI), such as at least one of DCI format 2, or 2C, 2D, etc. of the current LTE system. The content of the control information may include: at least one of time-frequency resource allocation of data transmission, modulation coding format, redundancy version indication, new data indication, power control command word, and Hybrid Automatic Repeat Request (HARQ) process number.

S330, after receiving the control information sent by the network device, the terminal device determines a first resource for transmitting a demodulation reference signal and a second resource for transmitting data from the control information.

In the embodiment of the invention, the network equipment indicates a second resource for transmitting the corresponding demodulation reference signal while indicating a first resource for transmitting data.

For example, the network device indicates, while indicating the first resource used by the network device for transmitting the downlink data to the terminal device, a second resource used by the downlink demodulation reference signal used for demodulating the downlink data and transmitted by the network device. Therefore, when terminal equipment demodulates downlink data or receives the downlink data, channel estimation is carried out according to the indicated downlink demodulation reference signal, so that channel quality Information of the downlink demodulation reference signal, such as Channel State Information (CSI), is obtained in time, and further delay between the newly obtained channel State Information and the downlink data to be sent by the network equipment is smaller, and the channel State Information can be matched with the channel State Information at the next data transmission time, so that a link can be recovered more quickly and better.

For example, the network device indicates the terminal device to send the uplink demodulation reference signal for demodulating the uplink data while indicating the first resource used by the terminal device to send the uplink data. Therefore, when the network device demodulates the uplink data or receives the uplink data, the channel estimation can be performed according to the indicated uplink demodulation reference signal, so that the channel state information, such as CSI, of the uplink demodulation reference signal can be obtained in time, the delay between the newly obtained channel state information and the uplink data to be sent by the terminal device is smaller, the channel state information can be more matched with the channel state information at the next data transmission time, and the link can be recovered more quickly and better.

At this time, the frequency domain resources included in the first resources may further include frequency domain resources in the second resources, i.e., the frequency domain resources in the second resources are a subset of the frequency domain resources in the first resources. More specifically, the frequency domain resources used for transmitting the data are a subset of the frequency domain resources used for transmitting the demodulation reference signal corresponding to the data. In this way, multiple terminal devices can multiplex the same demodulation reference signal, that is, the resource allocation of data transmission of multiple terminal devices is limited within the resource allocation range occupied by the demodulation reference signal. Within the resource allocation range occupied by the demodulation reference signal, resource allocation can be performed for one or more terminal devices.

Alternatively, when the second indication information indicates the second resource, the second indication information may be indicated based on the entire frequency domain resource used for data communication between the network device and the terminal device, or may be indicated based on the first resource. Further, the second indication information may be used to indicate which frequency domain resources of the entire frequency domain resources used by the network device for data communication with the terminal device are the second resources, and may also be used to indicate which frequency domain resources of the first resources are the second resources. The entire frequency domain resource may be a downlink system bandwidth used for data communication between the network device and the terminal device.

When the network device allocates resources for the demodulation reference signal and the corresponding data, the minimum resource allocation granularity of the first resource may be greater than or equal to the minimum resource allocation granularity of the second resource.

Assuming that the entire frequency domain Resource is 10 Resource Blocks (RBs), and the minimum Resource granularity for performing the first Resource allocation is 2 RBs, the number of bits required for the first indication information for indicating the first Resource may be 3 bits. If the minimum allocation granularity of the second resource is 1 RB, the second resource may be indicated by 1 bit when the first resource determined according to the 3-bit first indication information is the second RB (010) and the third RB (011) of the 10 RBs. For example, the second indication information may be 0 for indicating that the second resource is the first of the two RBs of the first resource, and may be 1 for indicating that the second resource is the second of the two RBs of the first resource.

When the second indication information indicates the second resource based on the first resource, signaling overhead for transmitting the second indication information may be saved.

The above describes the case where the second indication information indicates the second resource based on the first resource, and the following describes the case where the second indication information indicates the second resource based on the entire frequency domain resources.

Assuming that the entire frequency domain resource is 10 resource blocks RB, and the minimum resource granularity for performing the first resource allocation is 2 RBs, the number of bits required for the first indication information for indicating the first resource may be 3 bits. If the minimum allocation granularity of the second resource is 2 RBs, when the first resource determined according to the 3-bit first indication information is the second RB (010), the third RB (011), the fourth RB, and the fifth RB of the 10 RBs, the second resource may be indicated by 3 bits. The second indication information may be 010 and 011, for example, to indicate that the second resource is the second RB and the third RB among 10 RBs of the entire frequency domain resource, and the second indication information may be 100 and 101, for example, to indicate that the second resource is the fourth RB and the fifth RB among 10 RBs of the entire frequency domain resource.

Optionally, the first resource and the second resource may include time domain resources, that is, the first resource includes a time domain resource for transmitting the demodulation reference signal, and the second resource includes a time domain resource for transmitting the data. Further, the first resource may include N symbols, that is, the first resource may include N symbols for transmitting the demodulation reference signal, where N is a positive integer. Further, the first indication information may be used to indicate N symbols for transmitting the demodulation reference signal.

Optionally, the N symbols used for transmitting the demodulation reference signal may be first N symbols of a subframe in which the control information is located, may also be N symbols immediately following the symbol used for transmitting the control information, or may be any N symbols in the subframe in which the control information is located, and the N symbols may be consecutive or may also be discontinuous.

At this time, if the demodulation reference signal is a downlink demodulation reference signal and the data is downlink data, after the network device transmits the control information to the terminal device, as shown in S340 in fig. 3, the network device may transmit M downlink demodulation reference signals to the terminal device within N symbols indicated by the first indication information in the control information. Correspondingly, after receiving the control information sent by the network device, the terminal device may receive M downlink demodulation reference signals sent by the network device within the N symbols indicated by the first indication information in the control information. Wherein N is a positive integer less than or equal to M.

Optionally, after the terminal device receives the M downlink demodulation reference signals in the N symbols, as shown in S350 in fig. 3, the terminal device may perform channel quality measurement based on the M demodulation reference signals, and acquire channel state information of the M demodulation reference signals.

Optionally, after the terminal device obtains the channel state information of the M demodulation reference signals, as shown in S360 in fig. 3, the terminal device may send, to the network device, the channel state information of T demodulation reference signals in the M demodulation reference signals, such as the channel quality information of the T demodulation reference signals and/or the index of the T demodulation reference signals. Since each demodulation reference signal corresponds to one shaped beam, the index of the T demodulation reference signals can also be understood as the index of the shaped beam corresponding to the T demodulation reference signals respectively.

Correspondingly, the network device receives the channel state information of the T demodulation reference signals sent by the terminal device.

Where T is a positive integer less than or equal to M, that is, the terminal device may send the channel state information of all or part of the M demodulation reference signals to the network device. Here, T is a positive integer greater than or equal to 1.

Alternatively, the T demodulation reference signals may be T demodulation reference signals with better channel quality among the M demodulation reference signals.

Optionally, the control information sent by the network device to the terminal device, or the control information received by the terminal device from the network device, may further include Precoding Matrix Indicator (PMI) for transmitting the data. The PMI may be indication information of a combining weight coefficient of resources used by the M downlink demodulation reference signals. More specifically, the PMI may be some column selection matrix or vector. At this time, the terminal device may demodulate the data based on the PMI and the M demodulation reference signals.

Alternatively, when the terminal device transmits the channel state information of the T demodulation reference signals to the network device, the channel state information may be transmitted together with indication information indicating reception confirmation information of the data. More specifically, the terminal device may simultaneously transmit, to the network device, the channel state information of the T demodulation reference signals and indication information indicating reception acknowledgement information of the data on a last uplink symbol of a subframe in which the data is transmitted. The data reception Acknowledgement indication may be any one of an Acknowledgement (ACK), a Negative Acknowledgement (NACK), or a Discontinuous Transmission (DTX) indication.

The above describes steps that the network device and the terminal device may perform when the demodulation reference signal is downlink demodulation reference signal and the data is downlink data.

When the demodulation reference signal is an uplink demodulation reference signal and the data is uplink data, the method executed by the network device and the terminal device is similar to the steps executed by the network device and the terminal device when the demodulation reference signal is a downlink demodulation reference signal and the data is downlink data, and details are not repeated here.

The signal transmission method of the present invention is described above, and the terminal device, the network device, and the communication system of the present invention are described below.

Fig. 4 is a schematic configuration diagram of a terminal device of one embodiment of the present invention. It should be understood that the terminal device 400 shown in fig. 4 is only an example, and the terminal device of the embodiment of the present invention may further include other modules or units, or include modules having functions similar to those of the respective modules in fig. 4, or may not include all the modules in fig. 4.

The processing module 410 is configured to determine a first resource allocation manner, where the first resource allocation manner is a resource allocation manner used by a network device to send a downlink signal to the terminal device.

A sending module 420, configured to send first indication information to the network device, where the first indication information is used to indicate a first resource configuration manner.

A receiving module 430, configured to receive the downlink signal.

In the embodiment of the invention, the terminal equipment sends the indication information to the network equipment to indicate the configuration mode of the resource which the network equipment expects to send the downlink signal to, so that the network equipment can determine the configuration mode of the resource which is actually used by the network equipment to send the downlink signal to the terminal equipment by referring to the indication of the terminal equipment. And then the terminal equipment receives the downlink signal sent by the network equipment by using the determined resource configuration mode. The configuration mode of the resource used by the downlink signal received by the terminal equipment can be determined after the network equipment and the terminal equipment interact, namely, the indication is referred, so that the network equipment and/or the terminal equipment can reasonably adjust the shaped beam related to the downlink signal, and finally the transmission performance of the whole communication system is improved.

Optionally, as an embodiment, the receiving module is further configured to: receiving second indication information sent by the network device, where the second indication information is used to indicate a second resource allocation manner, and the second resource allocation manner is a resource allocation manner, determined by the network device according to the first indication information, used for sending the downlink signal to the terminal device; the receiving module is specifically configured to receive the downlink signal sent by the network device using the second resource allocation manner.

Optionally, as an embodiment, the first resource allocation manner and/or the second resource allocation manner is a resource multiplexing manner of k downlink signals and/or time-frequency resource positions of k downlink signals, and k is an integer greater than 1.

Optionally, as an embodiment, the resource multiplexing mode includes a multiplexing mode of time domain resources and/or a multiplexing mode of frequency domain resources.

Optionally, as an embodiment, the second resource allocation manner is the first resource allocation manner.

Optionally, as an embodiment, the receiving module is specifically configured to: and receiving the second indication information sent by the network equipment through a high-level signaling or a physical layer signaling, wherein the high-level signaling comprises a Radio Resource Control (RRC) signaling, and the physical layer signaling comprises a Downlink Control Information (DCI) signaling.

Optionally, as an embodiment, the sending module is specifically configured to: and sending the first indication information to the network equipment on the resource which is pre-configured for the terminal equipment by the network equipment.

It should be understood that the above and other operations and/or functions of each unit in the terminal device in the embodiment of the present invention shown in fig. 4 are respectively for implementing the corresponding processes executed by the terminal device in the signal transmission method shown in fig. 2, and are not described herein again for brevity.

Fig. 5 is a schematic block diagram of a network device according to an embodiment of the present invention. It should be understood that the network device 500 shown in fig. 5 is only an example, and the network device of the embodiment of the present invention may further include other modules or units, or include modules having functions similar to those of the respective modules in fig. 5, or not include all the modules in fig. 5. Network device 500 may be a base station.

A receiving module 510, configured to receive first indication information sent by a terminal device, where the first indication information is used to indicate a first resource configuration mode, and the first resource configuration mode is a configuration mode of a resource used by the network device to send a downlink signal to the terminal device.

A sending module 520, configured to send the downlink signal to the terminal device.

In the embodiment of the present invention, the network device receives the indication information sent by the terminal device, obtains the configuration mode of the resource that the terminal device expects the network device to use for sending the downlink signal, and then the network device can determine the configuration mode of the resource that is actually used for sending the downlink signal to the terminal device by referring to the indication of the terminal device. Because the configuration mode of the resource used by the network device for sending the downlink signal can be determined after the network device interacts with the terminal device, namely, the indication is referred, the network device and/or the terminal device can reasonably adjust the shaped beam related to the downlink signal, and finally the transmission performance of the whole communication system is improved.

Optionally, as an embodiment, the network device further includes a processing module: the processing module is used for determining a second resource configuration mode according to the first indication information; the sending module is further configured to: sending second indication information to the terminal device, where the second indication information is used to indicate the second resource allocation manner, and the second resource allocation manner is a resource allocation manner used by the network device to send the downlink signal to the terminal device; the sending module is specifically configured to send the downlink signal to the terminal device using the second resource configuration information.

Optionally, as an embodiment, the sending module is specifically configured to: and sending the second indication information to the terminal equipment through a high-level signaling or a physical layer signaling, wherein the high-level signaling comprises a Radio Resource Control (RRC) signaling, and the physical layer signaling comprises a Downlink Control Information (DCI) signaling.

Optionally, as an embodiment, the receiving module is specifically configured to: and receiving the first indication information sent by the terminal equipment through the resource pre-configured for the terminal equipment by the network equipment.

It should be understood that, the above and other operations and/or functions of each unit in the terminal device in the embodiment of the present invention shown in fig. 5 are respectively for implementing the corresponding flow executed by the network device in the signal transmission method shown in fig. 2, and are not described again here for brevity.

Fig. 6 is a schematic structural diagram of a network device of one embodiment of the present invention. It should be understood that the network device 600 shown in fig. 6 is only an example, and the network device of the embodiment of the present invention may further include other modules or units, or include modules having functions similar to those of the respective modules in fig. 6, or not include all the modules in fig. 6. Network device 600 may be a base station.

A processing module 610, configured to determine a first resource for transmitting a demodulation reference signal and a second resource for transmitting data, where the demodulation reference signal is a reference signal used for demodulating the data.

A sending module 620, configured to send control information to a terminal device, where the control information includes first indication information and second indication information, the first indication information is used to indicate the first resource, and the second indication information is used to indicate the second resource.

In the embodiment of the invention, the network equipment indicates the first resource used by the network equipment for sending data and also indicates the demodulation reference signal used for sending and demodulating the data, so that when the downlink data is demodulated or the data is received, channel estimation can be carried out according to the demodulation reference signal, the channel state information of the demodulation reference signal can be obtained in time, and further the delay between the newly obtained channel state information and the downlink data to be sent is smaller, so that the channel state information can be matched with the channel state information at the next data transmission moment, and the link can be recovered more quickly and better.

Optionally, as an embodiment, the first resources and the second resources include frequency domain resources, and frequency domain resources in the first resources include frequency domain resources in the second resources.

Optionally, as an embodiment, the first resource and the second resource include a time domain resource, the first resource includes N symbols, and N is a positive integer.

Optionally, as an embodiment, the sending module is further configured to send M demodulation reference signals over the N symbols, where M is a positive integer,

optionally, as an embodiment, the network device further includes a receiving module, configured to receive channel state information sent by the terminal device, where the channel state information includes at least one of the following information: channel quality information of the M demodulation reference signals, indexes of T demodulation reference signals among the M demodulation reference signals, and channel quality information of the T demodulation reference signals; wherein T is a positive integer less than or equal to M.

Optionally, as an embodiment, the channel state information further includes indication information for indicating reception confirmation information of the data.

Optionally, as an embodiment, the control information further includes precoding matrix indicator PMI information for transmitting the data.

It should be understood that, the above-mentioned and other operations and/or functions of each unit in the network device in the embodiment of the present invention shown in fig. 6 are respectively for implementing the corresponding flow executed by the network device in the signal transmission method shown in fig. 3, and are not described herein again for brevity.

Fig. 7 is a schematic configuration diagram of a terminal device of one embodiment of the present invention. It should be understood that the terminal device 700 shown in fig. 7 is only an example, and the terminal device of the embodiment of the present invention may further include other modules or units, or include modules having functions similar to those of the respective modules in fig. 7, or may not include all the modules in fig. 7.

A receiving module 710, configured to receive control information sent by a network device, where the control information includes first indication information and second indication information, the first indication information is used to indicate the first resource, and the second indication information is used to indicate the second resource.

A processing module 720, configured to determine the first resource and the second resource according to the control information.

In the embodiment of the present invention, when receiving the indication information indicating the first resource used for sending data, the terminal device further receives the indication information indicating the demodulation reference signal used for sending and demodulating the data, so that when demodulating downlink data, or receiving data, channel estimation can be performed according to the demodulation reference signal, and channel state information of the demodulation reference signal is obtained in time, so that delay between newly obtained channel state information and downlink data to be sent is smaller, and thus the channel state information can be more matched with channel state information at the next data transmission time, and a link can be recovered more quickly and better.

Optionally, as an embodiment, the receiving module is further configured to receive M demodulation reference signals sent by the network device on the N symbols, where M is a positive integer,

optionally, as an embodiment, the terminal device further includes a sending module, configured to send channel state information to the network device, where the channel state information includes channel quality information of the M demodulation reference signals, indexes of T demodulation reference signals in the M demodulation reference signals, and signal quality information of the T demodulation reference signals; wherein T is a positive integer less than or equal to M.

Optionally, as an embodiment, the control information further includes precoding matrix indicator information PMI used for transmitting the data.

It should be understood that the above and other operations and/or functions of each unit in the terminal device in the embodiment of the present invention shown in fig. 7 are respectively for implementing the corresponding process executed by the terminal device in the signal transmission method shown in fig. 3, and are not described herein again for brevity.

Fig. 8 is a schematic configuration diagram of a terminal device 800 of one embodiment of the present invention. Terminal device 800 includes memory 810, processor 820, and transceiver 830.

A memory 810 for storing a program.

A processor 820 for executing the programs stored in the memory 810.

When the processor 820 executes the program stored in the memory 810, the first resource configuration mode is specifically configured to determine a first resource configuration mode, where the first resource configuration mode is a configuration mode of a resource used by a network device to send a downlink signal to the terminal device.

The transceiver 830 is configured to send first indication information to the network device, where the first indication information is used to indicate a first resource configuration manner.

The transceiver 830 is further configured to invoke the transceiver 830 to receive the downlink signal.

Optionally, as an embodiment, the transceiver is further configured to: receiving second indication information sent by the network device, where the second indication information is used to indicate a second resource allocation manner, and the second resource allocation manner is a resource allocation manner, determined by the network device according to the first indication information, used for sending the downlink signal to the terminal device; the transceiver is further specifically configured to receive the downlink signal sent by the network device using the second resource allocation manner.

Optionally, as an embodiment, the transceiver is specifically configured to: and receiving the second indication information sent by the network equipment through a high-level signaling or a physical layer signaling, wherein the high-level signaling comprises a Radio Resource Control (RRC) signaling, and the physical layer signaling comprises a Downlink Control Information (DCI) signaling.

Optionally, as an embodiment, the transceiver is specifically configured to: and sending the first indication information to the network equipment on the resource which is pre-configured for the terminal equipment by the network equipment.

It should be understood that the terminal device shown in fig. 8 according to the embodiment of the present invention may correspond to the terminal device shown in fig. 4, and the above-mentioned and other operations and/or functions of each unit in the terminal device shown in fig. 8 according to the embodiment of the present invention are respectively for implementing the corresponding flow executed by the terminal device in the signal transmission method shown in fig. 2, and are not described again here for brevity.

Fig. 9 is a schematic block diagram of a network device 900 according to an embodiment of the present invention. Network device 900 includes memory 910, processor 920, and transceiver 930.

A memory 910 for storing programs.

A processor 920 for executing the programs stored in the memory 910.

When the processor 920 executes the program stored in the memory 910, the transceiver 930 is configured to receive first indication information sent by a terminal device, where the first indication information is used to indicate a first resource allocation manner, and the first resource allocation manner is a resource allocation manner used by the network device to send a downlink signal to the terminal device.

The transceiver 830 is further configured to transmit the downlink signal to the terminal device.

Optionally, as an embodiment, the processor is further configured to determine a second resource configuration manner according to the first indication information; the transceiver is further configured to: sending second indication information to the terminal device, where the second indication information is used to indicate the second resource allocation manner, and the second resource allocation manner is a resource allocation manner used by the network device to send the downlink signal to the terminal device; the transceiver is specifically configured to transmit the downlink signal to the terminal device using the second resource configuration information.

Optionally, as an embodiment, the transceiver is specifically configured to: and sending the second indication information to the terminal equipment through a high-level signaling or a physical layer signaling, wherein the high-level signaling comprises a Radio Resource Control (RRC) signaling, and the physical layer signaling comprises a Downlink Control Information (DCI) signaling.

Optionally, as an embodiment, the transceiver is specifically configured to: and receiving the first indication information sent by the terminal equipment through the resource pre-configured for the terminal equipment by the network equipment.

It should be understood that the network device shown in fig. 9 according to the embodiment of the present invention may correspond to the network device shown in fig. 5, and the above-mentioned and other operations and/or functions of each unit in the network device shown in fig. 9 according to the embodiment of the present invention are respectively for implementing the corresponding flow executed by the network device in the signal transmission method shown in fig. 2, and are not described again here for brevity.

Fig. 10 is a schematic block diagram of a network device 1000 according to an embodiment of the present invention. The network device 1000 includes a memory 1010, a processor 1020, and a transceiver 1030.

A memory 1010 for storing programs.

A processor 1020 for executing programs stored in the memory 1010.

When the processor 1020 executes the program stored in the memory 1010, the processor is specifically configured to determine a first resource for transmitting a demodulation reference signal and a second resource for transmitting data, where the demodulation reference signal is a reference signal used for demodulating the data.

The transceiver 1030 is configured to send control information to a terminal device, where the control information includes first indication information and second indication information, the first indication information is used to indicate the first resource, and the second indication information is used to indicate the second resource.

Optionally, as an embodiment, the transceiver is further configured to transmit M demodulation reference signals on the N symbols, where M is a positive integer,

optionally, as an embodiment, the transceiver is further configured to receive channel state information sent by the terminal device, where the channel state information includes at least one of the following information: channel quality information of the M demodulation reference signals, indexes of T demodulation reference signals among the M demodulation reference signals, and channel quality information of the T demodulation reference signals; wherein T is a positive integer less than or equal to M.

It should be understood that the network device shown in fig. 10 according to the embodiment of the present invention may correspond to the network device shown in fig. 6, and the above-mentioned and other operations and/or functions of each unit in the network device shown in fig. 10 according to the embodiment of the present invention are respectively for implementing the corresponding flow executed by the network device in the signal transmission method shown in fig. 3, and are not described again here for brevity.

Fig. 11 is a schematic configuration diagram of a terminal device 1100 according to an embodiment of the present invention. Terminal device 1100 includes memory 1110, processor 1120, and transceiver 1130.

The memory 1110 stores programs.

A processor 1120 for executing the programs stored by the memory 1110.

When the processor 1120 executes the program stored in the memory 1110, the transceiver is configured to receive control information sent by a network device, where the control information includes first indication information and second indication information, the first indication information is used to indicate the first resource, and the second indication information is used to indicate the second resource.

The processor 1120 is further configured to determine the first resource and the second resource according to the control information.

Optionally, as an embodiment, the transceiver is further configured to receive M demodulation reference signals sent by the network device on the N symbols, where M is a positive integer,

optionally, as an embodiment, the transceiver is further configured to send channel state information to the network device, where the channel state information includes channel quality information of the M demodulation reference signals, indexes of T demodulation reference signals in the M demodulation reference signals, and signal quality information of the T demodulation reference signals; wherein T is a positive integer less than or equal to M.

It should be understood that the terminal device shown in fig. 11 according to the embodiment of the present invention may correspond to the terminal device shown in fig. 7, and the above-mentioned and other operations and/or functions of each unit in the terminal device shown in fig. 11 according to the embodiment of the present invention are respectively for implementing the corresponding flow executed by the terminal device in the signal transmission method shown in fig. 3, and are not described again here for brevity.

Fig. 12 is a schematic block diagram of a communication system 1200 of an embodiment of the present invention. It should be understood that the communication system shown in fig. 12 is only an example, and the communication system of the embodiment of the present invention may further include other devices or units, or include modules having functions similar to those of the respective modules in fig. 12, or not include all the modules in fig. 12.

The communication system 1200 includes a terminal device 1210 and a network device 1220. The terminal device may be the terminal device 400 shown in fig. 4 or the terminal device 800 shown in fig. 8, or may be the terminal device 700 described in fig. 7 or the terminal device 1100 described in fig. 11; network device 1220 may be network device 500 shown in fig. 5 or network device 900 shown in fig. 9, or may be network device 600 shown in fig. 6 or network device 1000 shown in fig. 10. For brevity, the number of times is not described in detail.

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 implementation. 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 invention.

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

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into 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 such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

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

Claims

1. A signal transmission method, comprising:

the method comprises the steps that terminal equipment determines a first resource configuration mode, wherein the first resource configuration mode is a configuration mode of resources used by network equipment for sending downlink signals to the terminal equipment;

the terminal equipment sends first indication information to the network equipment, wherein the first indication information is used for indicating a first resource configuration mode;

the terminal device receives second indication information sent by the network device, wherein the second indication information is used for indicating a second resource allocation mode, and the second resource allocation mode is a resource allocation mode used by the network device for sending the downlink signal to the terminal device and determined according to the first indication information;

and the terminal equipment receives a downlink signal sent by the network equipment by using the second resource configuration mode.

2. The signal transmission method according to claim 1, wherein the first resource allocation manner and/or the second resource allocation manner is a resource multiplexing manner of k downlink signals and/or time-frequency resource positions of k downlink signals, and k is an integer greater than 1.

3. The signal transmission method according to claim 2, wherein the resource multiplexing scheme comprises a time domain resource multiplexing scheme and/or a frequency domain resource multiplexing scheme.

4. The signal transmission method according to any one of claims 1 to 3, wherein the second resource allocation is the first resource allocation.

5. The signal transmission method according to claim 1, wherein the receiving, by the terminal device, the second indication information sent by the network device includes:

and the terminal equipment receives the second indication information sent by the network equipment through a high-level signaling or a physical layer signaling, wherein the high-level signaling comprises a Radio Resource Control (RRC) signaling, and the physical layer signaling comprises a Downlink Control Information (DCI) signaling.

6. The signal transmission method according to claim 1, wherein the terminal device sends first indication information to the network device, the first indication information comprising:

and the terminal equipment sends the first indication information to the network equipment on the resources which are pre-configured for the terminal equipment by the network equipment.

7. A signal transmission method, comprising:

the method comprises the steps that network equipment receives first indication information sent by terminal equipment, wherein the first indication information is used for indicating a first resource configuration mode, and the first resource configuration mode is a configuration mode of resources used by the network equipment for sending downlink signals to the terminal equipment;

the network equipment determines a second resource configuration mode according to the first indication information;

the network device sends second indication information to the terminal device, where the second indication information is used to indicate the second resource allocation manner, and the second resource allocation manner is a resource allocation manner used by the network device to send the downlink signal to the terminal device;

and the network equipment sends the downlink signal to the terminal equipment by using the second resource configuration information.

8. The signal transmission method according to claim 7, wherein the first resource allocation manner and/or the second resource allocation manner is a resource multiplexing manner of k downlink signals and/or time-frequency resource positions of k downlink signals, and k is an integer greater than 1.

9. The signal transmission method according to claim 8, wherein the resource multiplexing scheme comprises a time domain resource multiplexing scheme and/or a frequency domain resource multiplexing scheme.

10. The signal transmission method according to any one of claims 7 to 9, wherein the second resource allocation is the first resource allocation.

11. The signal transmission method according to claim 7, wherein the network device sends second indication information to the terminal device, the second indication information comprising:

and the network equipment sends the second indication information to the terminal equipment through a high-level signaling or a physical layer signaling, wherein the high-level signaling comprises a Radio Resource Control (RRC) signaling, and the physical layer signaling comprises a Downlink Control Information (DCI) signaling.

12. The signal transmission method according to claim 7, wherein the receiving, by the network device, the first indication information sent by the terminal device includes:

and the network equipment receives the first indication information sent by the terminal equipment through the resource pre-configured for the terminal equipment by the network equipment.

13. A terminal device, comprising:

a processing module, configured to determine a first resource configuration mode, where the first resource configuration mode is a configuration mode of a resource used by a network device to send a downlink signal to the terminal device;

a sending module, configured to send first indication information to the network device, where the first indication information is used to indicate a first resource configuration mode;

a receiving module, configured to receive second indication information sent by the network device, where the second indication information is used to indicate a second resource allocation manner, and the second resource allocation manner is a resource allocation manner, determined by the network device according to the first indication information, used for sending the downlink signal to the terminal device;

the receiving module is further configured to receive a downlink signal sent by the network device using the second resource configuration mode.

14. The terminal device according to claim 13, wherein the first resource allocation manner and/or the second resource allocation manner is a resource multiplexing manner of k downlink signals and/or time-frequency resource positions of k downlink signals, and k is an integer greater than 1.

15. The terminal device according to claim 14, wherein the resource multiplexing mode comprises a time domain resource multiplexing mode and/or a frequency domain resource multiplexing mode.

16. The terminal device according to any of claims 13 to 15, wherein the second resource allocation is the first resource allocation.

17. The terminal device of claim 13, wherein the receiving module is specifically configured to:

and receiving the second indication information sent by the network equipment through a high-level signaling or a physical layer signaling, wherein the high-level signaling comprises a Radio Resource Control (RRC) signaling, and the physical layer signaling comprises a Downlink Control Information (DCI) signaling.

18. The terminal device of claim 13, wherein the sending module is specifically configured to:

and sending the first indication information to the network equipment on the resource which is pre-configured for the terminal equipment by the network equipment.

19. A network device, comprising:

a receiving module, configured to receive first indication information sent by a terminal device, where the first indication information is used to indicate a first resource configuration mode, and the first resource configuration mode is a configuration mode of a resource used by the network device to send a downlink signal to the terminal device;

the processing module is used for determining a second resource configuration mode according to the first indication information;

a sending module, configured to send second indication information to the terminal device, where the second indication information is used to indicate the second resource allocation manner, and the second resource allocation manner is a resource allocation manner used by the network device to send the downlink signal to the terminal device;

the sending module is further configured to send the downlink signal to the terminal device using the second resource configuration information.

20. The network device according to claim 19, wherein the first resource allocation manner and/or the second resource allocation manner is a resource multiplexing manner of k downlink signals and/or a time-frequency resource location of k downlink signals, and k is an integer greater than 1.

21. The network device according to claim 20, wherein the resource multiplexing mode comprises a multiplexing mode of time domain resources and/or a multiplexing mode of frequency domain resources.

22. The network device according to any of claims 19 to 21, wherein the second resource allocation is the first resource allocation.

23. The network device of claim 19, wherein the sending module is specifically configured to:

and sending the second indication information to the terminal equipment through a high-level signaling or a physical layer signaling, wherein the high-level signaling comprises a Radio Resource Control (RRC) signaling, and the physical layer signaling comprises a Downlink Control Information (DCI) signaling.

24. The network device of claim 19, wherein the receiving module is specifically configured to:

and receiving the first indication information sent by the terminal equipment through the resource pre-configured for the terminal equipment by the network equipment.

25. A communication system comprising a terminal device according to any one of claims 13 to 18 and a network device according to any one of claims 19 to 24.

26. A terminal device comprising means for performing the method of any one of claims 1 to 6.

27. A network device comprising means for performing the method of any of claims 7 to 12.

28. A terminal device comprising a transceiver, a processor and a memory, the memory for storing code, the processor for executing the code in the memory, the transceiver for communicating with other devices, the processor invoking the transceiver to implement the method of any one of claims 1 to 6 when the code is executed.

29. A network device comprising a transceiver, a processor and a memory, the memory for storing code, the processor for executing the code in the memory, the transceiver for communicating with other devices, the processor invoking the transceiver to implement the method of any one of claims 7 to 12 when the code is executed.

30. A computer readable medium storing program code for execution by a terminal device, the program code comprising instructions for performing the method of any of claims 1 to 6.

31. A computer readable medium storing program code for execution by a network device, the program code comprising instructions for performing the method of any of claims 7 to 12.