METHODS AND APPARATUSES FOR TRANSMITTING AND RECEIVING PARAMETER AND COMMUNICATION SYSTEM

An apparatus for transmitting parameters, applicable to a terminal equipment, includes: a first receiver configured to receive request information, the request information being used to instruct the terminal equipment to at least transmit parameters of a receive antennas; and a first transmitter configured to transmit the parameters of the receive antennas of the terminal equipment.

TECHNICAL FIELD

This disclosure relates to the field of communication technologies.

BACKGROUND

A multiple-input multiple-output (MIMO) technique is one of key techniques of 5G mobile communication. The MIMO is able provide higher channel capacity; however, acquisition of such a benefit depends on whether accurate channel state information is acquired.

In a frequency division duplex (FDD) system, for a downlink, when a network device performs precoding by using information of downlink channels, a terminal equipment needs to feedback downlink channel state information (CSI) to the network device via an uplink. However, due to the information of downlink channels is directly proportional to the number of antennas of the network device, in a scenario of massive MIMO, a huge number of antennas of the network device may lead to a huge overhead for CSI feedback. The Third Generation Partnership Project (3GPP) designs enhanced codebooks (such as etype II codebooks), in which the overhead for CSI feedback is reduced through frequency domain compression. However, for valuable uplink resources, there is still a need to further reduce the overhead for CSI feedback.

With the development of artificial intelligence (AI) technique, applying AI technique to a physical layer of wireless communication to solve difficulties of related methods has become a promising direction. For CSI feedback, downlink channel state information is compressed at a terminal side by an encoder by using a classical encoding and decoding AI model, and the network device receives the compressed channel state information via an air interface and then decompresses it to recover the channel state information. As what is transmitted via the air interface is the compressed channel state information, in a case that channels between different transmitting and receiving antenna ports are correlated, the overhead for CSI feedback may be reduced significantly.

SUMMARY

When a codec compresses and decompresses an M*N dimensional CSI channel matrix (i.e. the number of transmit antenna ports is M, and the number of receive antenna ports is N), both a network device and a terminal equipment need to know the dimensions of the channel matrix. Wherein, the network device knows the number and configuration mode of transmit antenna ports of its own, and the terminal equipment also knows the number and configuration mode of receive antenna ports of its own. In addition, according to 3GPP protocols, the network device notifies the terminal equipment of the number and configuration mode of the transmit antenna ports via signaling.

It was found by the inventors of this disclosure that in the related art, the network device is not aware of parameters of the receive antennas of the terminal equipment, making it difficult to train or select a model for CSI encoding and decoding.

In order to solve the above problems, embodiments of this disclosure provide methods and apparatuses for transmitting and receiving parameters and a communication system, in which a terminal equipment transmits parameters of receive antennas to a network device, hence, the network device is able to train or select a model for CSI encoding and decoding.

According to one aspect of the embodiments of this disclosure, there is provided an apparatus for transmitting parameters, applicable to a terminal equipment, the apparatus including:a first receiving unit configured to receive request information, the request information being used to instruct the terminal equipment to at least transmit parameters of receive antennas; anda first transmitting unit configured to transmit the parameters of the receive antennas of the terminal equipment.

According to another aspect of the embodiments of this disclosure, there is provided an apparatus for receiving parameters, applicable to a network device, the apparatus at least including:a second transmitting unit configured to transmit request information, the request information being used to instruct a terminal equipment to at least transmit parameters of receive antennas; anda second receiving unit configured to receive the parameters of the receive antennas of the terminal equipment.

An advantage of the embodiments of this disclosure exists in that the terminal equipment transmits the parameters of the receive antennas to the network device, hence, the network device is able to train or select a model for CSI encoding and decoding.

DETAILED DESCRIPTION OF THE DISCLOSURE

In the embodiments of this disclosure, the term “communication network” or “wireless communication network” may refer to a network satisfying any one of the following communication standards: long term evolution (LTE), long term evolution-advanced (LTE-A), wideband code division multiple access (WCDMA), and high-speed packet access (HSPA), etc.

And communication between devices in a communication system may be performed according to communication protocols at any stage, which may, for example, include but not limited to the following communication protocols: 1 G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and 5G and new radio (NR) in the future, etc., and/or other communication protocols that are currently known or will be developed in the future.

In the embodiments of this disclosure, the term “network device”, for example, refers to a device in a communication system that accesses a user equipment to the communication network and provides services for the user equipment. The network device may include but not limited to the following devices: an integrated access and backhaul node (IAB node), a base station (BS), an access point (AP), a transmission reception point (TRP), a broadcast transmitter, a mobile management entity (MME), a gateway, a server, a radio network controller (RNC), a base station controller (BSC), etc.

The base station may include but not limited to a node B (NodeB or NB), an evolved node B (eNodeB or eNB), and a 5G base station (gNB), etc. Furthermore, it may include a remote radio head (RRH), a remote radio unit (RRU), a relay, or a low-power node (such as a femto, and a pico, etc.). The term “base station” may include some or all of its functions, and each base station may provide communication coverage for a specific geographical area. And a term “cell” may refer to a base station and/or its coverage area, depending on a context of the term.

In the embodiments of this disclosure, the term “user equipment (UE)” or “terminal equipment (TE) or terminal device” refers to, for example, an equipment accessing to a communication network and receiving network services via a network device. The user equipment may be fixed or mobile, and may also be referred to as a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), or a station, etc.

The terminal equipment may include but not limited to the following devices: a cellular phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a hand-held device, a machine-type communication device, a lap-top, a cordless telephone, a smart cell phone, a smart watch, and a digital camera, etc.

For another example, in a scenario of the Internet of Things (IoT), etc., the terminal equipment may also be a machine or a device performing monitoring or measurement. For example, it may include but not limited to a machine-type communication (MTC) terminal, a vehicle mounted communication terminal, a device to device (D2D) terminal, and a machine to machine (M2M) terminal, etc.

Moreover, the term “network side” or “network device side” refers to a side of a network, which may be a base station or one or more network devices including those described above. The term “user side” or “terminal side” or “terminal equipment side” refers to a side of a user or a terminal, which may be a UE, and may include one or more terminal equipments described above.

In the following description, without causing confusion, the terms “uplink control signal” and “uplink control information (UCI)” or “physical uplink control channel (PUCCH)” are interchangeable, and terms “uplink data signal” and “uplink data information” or “physical uplink shared channel (PUSCH)” are interchangeable.

The terms “downlink control signal” and “downlink control information (DCI)” or “physical downlink control channel (PDCCH)” are interchangeable, and the terms “downlink data signal” and “downlink data information” or “physical downlink shared channel (PDSCH)” are interchangeable.

In addition, transmitting or receiving a PUSCH may be understood as transmitting or receiving uplink data carried by the PUSCH, transmitting or receiving a PUCCH may be understood as transmitting or receiving uplink information carried by the PUCCH, transmitting or receiving a PRACH may be understood as transmitting or receiving a preamble carried by the PRACH. An uplink signal may include an uplink data signal and/or an uplink control signal, and may also be referred to as uplink transmission (UL transmission) or uplink information or an uplink channel. Transmitting uplink transmission on an uplink resource may be understood as transmitting the uplink transmission by using the uplink resource. Likewise, downlink data/signals/channels/information may be understood accordingly.

In the embodiments of this disclosure, higher-layer signaling may be, for example, radio resource control (RRC) signaling; for example, it is referred to an RRC message, which includes an MIB, system information, and a dedicated RRC message; or, it is referred to an as an RRC information element (RRC IE). Higher-layer signaling may also be, for example, medium access control (MAC) signaling, or an MAC control element (MAC CE); however, this disclosure is not limited thereto.

Scenarios in the embodiments of this disclosure shall be described below by way of examples; however, this disclosure is not limited thereto.

FIG.1is a schematic diagram of a communication system of this disclosure, in which a case where a terminal equipment and a network device are taken as an example is schematically shown. As shown inFIG.1, a communication system100may include a network device101and a terminal equipment102(for the sake of simplicity, an example having only one terminal equipment is schematically given inFIG.1).

In the embodiments of this disclosure, existing services or services that may be implemented in the future may be performed between the network device101and the terminal equipment102. For example, such services may include but not limited to an enhanced mobile broadband (eMBB), massive machine type communication (MTC), and ultra-reliable and low-latency communication (URLLC), etc.

The terminal equipment102may transmit data to the network device101, such as in a granted or grant-free transmission manner. The network device101may receive data transmitted by one or more terminal equipments102and feed back information to the terminal equipment102, such as acknowledgement (ACK)/non-acknowledgement (NACK) information. According to the feedback information, the terminal equipment102may acknowledge end of a transmission process, or may perform new data transmission, or may perform data retransmission.

FIG.2is a schematic diagram of an encoder and a decoder in a communication system of the embodiments of this disclosure. As shown inFIG.2, in the communication system100, the network device101may have M transmit antenna ports, and the terminal equipment102may have N receive antenna ports. A wireless channel between the network device101and the terminal equipment102may be represented by an M*N-dimensional channel matrix.

As shown inFIG.2, a decoder201is provided at the network device101, and an encoder202is provided at the terminal equipment102. The encoder202compresses CSI, the terminal equipment102transmits the compressed CSI to the network device101, and the decoder201decompresses the received compressed CSI to obtain CSI.

The encoder202may perform compression based on an encoding model (e.g. an AI model), and the decoder201may perform decompression based on a decoding model (e.g. an AI model).

Embodiments of a First Aspect

The embodiments of the first aspect provide a method for transmitting parameters, applicable to a terminal equipment, such as the terminal equipment102inFIG.1or2.

FIG.3is a schematic diagram of a method for transmitting parameters of the first aspect of this disclosure. As shown inFIG.3, the method includes:operation301: request information is received, the request information being used to instruct the terminal equipment to at least transmit parameters of receive antennas; andoperation302: the parameters of the receive antennas of the terminal equipment is transmitted.

In operation301, the request information is carried in, for example, an AImodelInformEquiry message.

In operation302, in response to the received request information, the terminal equipment102may transmit the parameters of the receive antennas to the network device101. For example, the parameters of the receive antennas may be carried in an AImodelInformResponse message. In a specific implementation, the terminal equipment102may transmit the parameters of the receive antennas via at least one of radio resource control (RRC) signaling or a media access control control element (MAC CE).

In the embodiments of the first aspect, the terminal equipment transmits the parameters of the receive antennas to the network device, hence, the network device may train or select a model for CSI encoding and decoding.

As shown inFIG.3, the method for transmitting parameters may further at least include:operation303: based on the parameters of the receive antennas, a model for compressing channel state information is selected or generated.

In operation303, the terminal equipment102may train an encoding model directly according to the parameters of the receive antennas to generate an encoding model, or may select an appropriate encoding model from trained encoding models. Or, the terminal equipment102may train an encoding model according to model information transmitted by the network device101to generate an encoding model, or may select an appropriate encoding model from trained encoding models. Thus, the terminal equipment102is able to compress the CSI by using an appropriate encoding model.

In at least one embodiment, the parameters of the receive antennas may at least include: the number of ports of the receive antenna, and/or a type of the receive antenna, and/or array configuration of the receive antenna.

A port of the receive antenna is a channel on a symbol on the port, and the channel may be inferred from another symbol on the same port.

In at least one embodiment, the port of the receive antenna may be a receiving chain in an independent transceiver unit.

FIG.4is a schematic diagram of a receiving chain in an independent transceiver unit. As shown inFIG.4, in K independent transceiver units40of the terminal equipment, each transceiver unit40includes a transmitting link401and a receiving chain402, and each receiving chain may correspond to a port of a receive antenna. InFIG.4, there are K receiving chains402, and it may be deemed that the number of receiving ports is K.

In addition, the number of transmitting chains401and the number of receiving chains402inFIG.4are equal; however, this disclosure is not limited thereto. For example, in some transceiver units, there may exist no transmitting chains or receiving chains, or in some transceiver units, the transmitting chains or receiving chains may not operate. The number of the receiving ports described in this disclosure may refer to the number of operating receiving chains.

In at least another embodiment, the port of the receive antenna may be an effective receive antenna of multiple receive antenna elements.

FIG.5is a schematic diagram of an effective receive antenna. As shown inFIG.5, a radio frequency unit50may be connected to L receive antenna elements, but the L receive antenna elements correspond to only one receiving chain. Therefore, the L receive antenna elements connected to the same radio frequency unit50may be deemed as an effective receive antenna, that is, a port of a receive antenna.

In the embodiments of the first aspect, the type of the receive antenna is at least one of an omnidirectional antenna, a directional antenna or a cross-polarized antenna.

In the embodiments of the first aspect, the array configuration of the receive antenna may include at least one of the following parameters:the number of antenna panels in a first dimension and/or the number of antenna panels in a second dimension;the number of antennas in the first dimension and/or the number of antennas in the second dimension in an antenna panel;a polarization direction of an antenna;a distance between antenna panels in the first dimension and/or a distance between antenna panels in the second dimension; ora distance between antennas in the first dimension and/or in the second dimension in an antenna panel.

FIG.6is a schematic diagram of an array of the receive antennas. As shown inFIG.6, a first dimension is denoted by D1, a second dimension is denoted by D2, and the first dimension D1and the second dimension D2may intersect. For example, the first dimension D1and the second dimension D2may be perpendicular to each other. Specifically, the first dimension D1is a horizontal dimension, and the second dimension D2is a vertical dimension.

InFIG.6, there are total Hg*Vg antenna panels60.

As shown inFIG.6, Hg denotes the number of antenna panels60in the first dimension, Vg denotes the number of antenna panels in the second dimension, H denotes the number of antennas in the first dimension within an antenna panel60, V denotes the number of antennas in the second dimension within an antenna panel60, dgh denotes a distance between antenna panels60in the first dimension, dgv denotes a distance between antenna panels60in the second dimension, Dh denotes a distance between antennas in the first dimension within an antenna panel60, and dv denotes a distance between antennas in the second dimension within an antenna panel60.

In at least one embodiment, the array configuration of the receive antenna may a least include two groups of parameters, wherein a first group of parameters may include Hg, Vg, M, N and P, and a second group of parameters may include dgv, dgh, dv and dh.

FIG.7is a schematic diagram of a process of performing communication by the communication system of this disclosure based on the method for transmitting parameters of the first aspect. As shown inFIG.7, the process includes:operation701: the network device101transmits request information to the terminal equipment102; andoperation702: the terminal equipment102transmits the parameters of the receive antennas of the terminal equipment102to the network device101.

As shown inFIG.7, the process may further at least include:operation703: the network device101obtains a decoding model based on the received parameters of the receive antennas;operation704: the network device101configures a resource, and transmits model information related to an encoding model to the terminal equipment102; andoperation705: the terminal equipment102obtains the encoding model according to the received model information.

In operation703, network device101may train the decoding model according to the parameters of the receive antennas to obtain the decoding model. In addition, network device101may also store multiple offline trained decoding models, and select a decoding model according to the parameters of the receive antennas and a correspondence between the receive antenna and the decoding model.

There exists a correspondence between the encoding model and the decoding model. In operation704, the network device101may configure a resource for transmitting the model information, and according to the decoding model determined in operation703, transmit to the terminal equipment102the model information related to the encoding model to which the decoding model corresponds.

Operation705may correspond to operation303. In operation705, the terminal equipment102obtains the encoding model according to the received model information. For example, the model information is a model coefficient of the encoding model. Accordingly, the terminal equipment102obtains the encoding model by directly using the model coefficient. For another example, the model information may correspond to the model coefficient, and the terminal equipment102may extract a model coefficient corresponding to the model information from multiple groups of model coefficients stored by the terminal equipment102, and obtain an encoding model according to the extracted model coefficient.

After the terminal equipment102and the network device101obtain the encoding model and decoding model respectively, the terminal equipment102and the network device101may perform processing related to feedback of channel state information (such as a channel coefficient matrix).

FIG.8is a schematic diagram of a process of performing CSI feedback by the communication system of this disclosure based on the method for transmitting parameters of the first aspect.

As shown inFIG.8, the process includes:operation801: the network device101configures a measurement resource for measurement of the downlink channel state information via signaling, wherein the signaling is, for example, RRC, an MAC CE, or downlink control information (DCI), and the measurement resource may be a reference signal, such as a CSI-RS, and/or an SSB;operation802: the network device101configures parameters needed in CSI feedback reporting;operation803: the network device101transmits reference signals for CSI measurement via a downlink channel;operation804: the terminal equipment102performs channel estimation after receiving the reference signals for CSI measurement, so as to obtain a channel coefficient matrix of a wireless channel;operation805: the terminal equipment102feeds the channel coefficient matrix to the encoder, and the encoder compresses the channel coefficient matrix based on the encoding model;operation806: the terminal equipment102transmits the compressed channel coefficient matrix on corresponding time-frequency resource according to configuration in the CSI feedback reporting;operation807: the network device101feeds the compressed channel coefficient matrix to the decoder after receiving the compressed channel coefficient matrix, and the decoder performs decompression based on the decoding model, to recover an original channel coefficient matrix; andoperation808: the network device101schedules transmission of downlink data according to the recovered original channel coefficient matrix.

The process inFIG.8describes a method for performing downlink channel CSI (e.g. a channel state matrix) feedback by using a codec. With the compression by the encoder, amount of feedback of channel state information may be significantly reduced in a case flat fading channels.

In the embodiments of the first aspect, the encoding model may adopt an AI model, and the decoding model may also adopt an AI model.

FIG.9is a schematic diagram of an encoding model using an AI model and a decoding model using the AI model.

As shown inFIG.9, the encoding model91for CSI compression is applied to the terminal equipment, and the decoding model92for decompression is applied to the network device. Assuming that the number of transmit antenna ports of the network device is 32, the number of receive antenna ports of the terminal equipment is 2, a bandwidth of the communication system is 24 resource blocks (RBs), and a density of a channel state information reference signal (CSI-RS) in the frequency domain is 0.5, i.e. there exists one CSI-RS signal on 2 RBs, there are total 12 CSI-RSs in the frequency domain. A dimension of data input onto the encoding model91is 12×32×2×2 (i.e. the number of RSs in the frequency domain×the number of transmit antenna ports of the network device×the number of receive antenna ports of the terminal equipment×I/Q paths).

As shown inFIG.9, the encoding model91includes: an input layer (input)911, a 3×3 convolution layer (3×3 conv)912, a 1×9 convolution layer (1×9 conv)913, a 9×1 convolution layer (9×1 conv)914, a 3×3 convolution layer (3×3 conv)915, a connection layer (concat)916, a 1×1 convolution layer (1×1 conv)917, a full connection layer (FC)918, and a quantizer919, where processing results of the 9×1 convolution layer (9×1 conv)914and the 3×3 convolution layer (3×3 conv)915are merged in the connection layer916.

The encoding model91outputs compressed channel state information, and the compressed channel state information is transmitted to the network device over an air interface.

As shown inFIG.9, the decoding model92includes a full connection layer (FC)921, a 5×5 convolution layer (5×5 cov)922, a first channel reconstruction block (CRBlock)923, a second channel reconstruction block (CRBlock)924, a 3×3 convolution layer (3×3 cov)925, and an output layer (output)926.

As shown inFIG.9, the first channel reconstruction block923and the second channel reconstruction block924may have identical structures. For example, the first channel reconstruction block923may include: two parallel branches, one of which including a 3×3 convolution layer (3×3 cov), a 1×9 convolution layer (1×9 cov) and a 9×1 convolution layer (9×1 cov), and the other one including a 1×5 convolution layer (1×5 cov) and a 5×1 convolution layer (5×1 cov); a connection layer (Concat) used to merge results of the two branches; a 1×1 convolution layer (1×1 cov); and an addition (add) processing layer used to add up an output of the 1×1 convolution layer (1×1 cov) and an output of the 5×5 convolution layer (5×5 cov).

As shown inFIG.9, the data output by the output layer926are the decompressed channel state information, and a data dimension thereof is 12×32×2×2, which is consistent with a dimension of the input data of encoding model91.

It should be noted that the above description of the encoding model91and the decoding model92is illustrative only, and as the information of the transmit antenna and the receive antenna changes, the parameters of the layers in the encoding model91and the decoding model92may possibly change, and structures of the encoding model91and the decoding model92may also change.

According to the embodiments of the first aspect of this disclosure, the terminal equipment transmits the parameters of the receive antennas to the network device, hence, the network device is able to train or select a model for CSI encoding and decoding, and the terminal equipment may obtain an appropriate model.

Embodiments of a Second Aspect

At least addressed to the same issues as the embodiments of the first aspect, the embodiments of the second aspect of this disclosure provide a method for receiving parameters, applicable to a network device. The method for receiving parameters in the second aspect corresponds to the method for transmitting parameters in the embodiments of the first aspect.

FIG.10is a schematic diagram of a method for receiving parameters of the embodiments of the second aspect of this disclosure. As shown inFIG.10, the method for receiving parameters at least includes:operation1001: request information is transmitted, the request information being used to instruct a terminal equipment to at least transmit parameters of receive antennas; andoperation1002: the parameters of the receive antennas of the terminal equipment is received.

In operation1002, the network device101may receive the parameters of the receive antennas via at least one of radio resource control (RRC) signaling or a media access control control element (MAC CE).

As shown inFIG.10, the method for receiving parameters further include:operation1003: based on the parameters of the receive antennas, a model for decompressing channel state information is selected or generated.

In at least one embodiment, the parameters of the receive antennas at least includes: the number of ports of the receive antenna, and/or a type of the receive antenna, and/or array configuration of the receive antenna.

A port of the receive antenna may be a channel on a symbol on the port, the channel being able to be inferred from another symbol on the same port; or, the port of the receive antenna is a receiving chain in an independent transceiver unit; or, the port of the receive antenna is an effective receive antenna in multiple receive antenna elements.

The type of the receive antenna is at least one of an omnidirectional antenna, a directional antenna or a cross-polarized antenna.

The array configuration of the receive antenna includes at least one of the following parameters:the number of antenna panels in a first dimension and/or the number of antenna panels in a second dimension;the number of antennas in the first dimension and/or the number of antennas in the second dimension in an antenna panel;a polarization direction of an antenna;a distance between antenna panels in the first dimension and/or a distance between antenna panels in the second dimension; ora distance between antennas in the first dimension and/or in the second dimension in an antenna panel.

According to the embodiments of the second aspect of this disclosure, the network device receives the parameters of the receive antennas transmitted by the terminal equipment, hence, the network device is able to train or select a model for CSI encoding and decoding, and the terminal equipment may obtain an appropriate model, thereby facilitating encoding and decoding the CSI.

Embodiments of a Third Aspect

The embodiments of the third aspect of this disclosure provide an apparatus for transmitting parameters, which is applicable to a terminal equipment, and corresponds to the method for transmitting parameters in the embodiments of the first aspect.

FIG.11is a schematic diagram of the apparatus for transmitting parameters of the third aspect of this disclosure. As shown inFIG.11, an apparatus1100for transmitting parameters includes a first receiving unit1101and a first transmitting unit1102.

The first receiving unit1101receives request information, the request information being used to instruct the terminal equipment to at least transmit parameters of a receive antennas; and the first transmitting unit1102transmits the parameters of the receive antennas of the terminal equipment.

The parameters of the receive antennas are transmitted via at least one of radio resource control (RRC) signaling or a media access control control element (MAC CE).

As shown inFIG.11, the apparatus1100further includes:a first processing unit1103configured to, based on the parameters of the receive antennas, select or generate a model for compressing channel state information.

In at least one embodiment, the parameters of the receive antennas at least includes: the number of ports of the receive antenna, and/or a type of the receive antenna, and/or array configuration of the receive antenna.

A port of the receive antenna is a channel on a symbol on the port, the channel being able to be inferred from another symbol on the same port; or, the port of the receive antenna is a receiving chain in an independent transceiver unit; or, the port of the receive antenna is an effective receive antenna in multiple receive antenna elements.

In at least one embodiment, the type of the receive antenna is at least one of an omnidirectional antenna, a directional antenna or a cross-polarized antenna.

The array configuration of the receive antenna includes at least one of the following parameters:the number of antenna panels in a first dimension and/or the number of antenna panels in a second dimension;the number of antennas in the first dimension and/or the number of antennas in the second dimension in an antenna panel;a polarization direction of an antenna;a distance between antenna panels in the first dimension and/or a distance between antenna panels in the second dimension; ora distance between antennas in the first dimension and/or in the second dimension in an antenna panel.

According to the embodiments of the third aspect of this disclosure, the terminal equipment transmits the parameters of the receive antennas to the network device, hence, the network device is able to train or select a model for CSI encoding and decoding, and the terminal equipment may obtain an appropriate model, thereby facilitating encoding and decoding the CSI.

Embodiments of a Fourth Aspect

The embodiments of the fourth aspect of this disclosure provide an apparatus for receiving parameters, which is applicable to a network device, and corresponds to the method for receiving parameters in the embodiments of the second aspect.

FIG.12is a schematic diagram of an apparatus for transmitting parameters of the fourth aspect of this disclosure. As shown inFIG.12, an apparatus1200for transmitting parameters includes a second transmitting unit1201and a second receiving unit1202.

The second transmitting unit1201transmits request information, the request information being used to instruct a terminal equipment to at least transmit parameters of a receive antennas; and the second receiving unit1202receives the parameters of the receive antennas of the terminal equipment.

The parameters of the receive antennas are transmitted via at least one of radio resource control (RRC) signaling or a media access control control element (MAC CE).

As shown inFIG.12, the apparatus1200further includes:a second processing unit1203configured to, based on the parameters of the receive antennas, select or generate a model for decompressing channel state information.

In at least one embodiment, the parameters of the receive antennas at least includes: the number of ports of the receive antenna, and/or a type of the receive antenna, and/or array configuration of the receive antenna.

A port of the receive antenna is a channel on a symbol on the port, the channel being able to be inferred from another symbol on the same port; or, the port of the receive antenna is a receiving chain in an independent transceiver unit; or, the port of the receive antenna is an effective receive antenna in multiple receive antenna elements.

In at least one embodiment, the type of the receive antenna is at least one of an omnidirectional antenna, a directional antenna or a cross-polarized antenna.

The array configuration of the receive antenna includes at least one of the following parameters:the number of antenna panels in a first dimension and/or the number of antenna panels in a second dimension;the number of antennas in the first dimension and/or the number of antennas in the second dimension in an antenna panel;a polarization direction of an antenna;a distance between antenna panels in the first dimension and/or a distance between antenna panels in the second dimension; ora distance between antennas in the first dimension and/or in the second dimension in an antenna panel.

According to the embodiments of the fourth aspect of this disclosure, the network device receives the parameters of the receive antennas transmitted by the terminal equipment, hence, the network device is able to train or select a model for CSI encoding and decoding, and the terminal equipment may obtain an appropriate model, thereby facilitating encoding and decoding the CSI.

Embodiments of a Fifth Aspect

The embodiments of this disclosure provide a communication system, including a network device and a terminal equipment.

FIG.13is a schematic diagram of a terminal equipment of the fifth aspect of this disclosure. As shown inFIG.13, a terminal equipment102may include a processor1310and a memory1320, the memory1320storing data and a program and being coupled to the processor1310. It should be noted that this figure is illustrative only, and other types of structures may also be used, so as to supplement or replace this structure and achieve a telecommunications function or other functions.

For example, the processor1310may be configured to execute a program to carry out the methods as described in the embodiments of the first aspect.

As shown inFIG.13, the terminal equipment102may further include a communication module1330, an input unit1340, a display1350, and a power supply1360, wherein functions of the above components are similar to those in the related art, which shall not be described herein any further. It should be noted that the terminal equipment102does not necessarily include all the parts shown inFIG.13, and the above components are not necessary. Furthermore, the terminal equipment102may include parts not shown inFIG.13, and the related art may be referred to.

FIG.14is a schematic diagram of a network device of the fifth aspect of this disclosure. As shown inFIG.14, a network device101may include a processor1410(such as a central processing unit (CPU)) and a memory1420, the memory1420being coupled to the processor1410. Wherein, the memory1420may store various data, and furthermore, it may store a program1430for information processing, and execute the program1430under control of the processor1410.

For example, the processor1410may be configured to execute a program to carry out the method described in the embodiments of the second aspect.

Furthermore, as shown inFIG.14, the network device101may include a transceiver1440, and an antenna1450, etc. Functions of the above components are similar to those in the related art, and shall not be described herein any further. It should be noted that the network device101does not necessarily include all the parts shown inFIG.14, and furthermore, the network device101may include parts not shown inFIG.14, and the related art may be referred to.

Embodiments of this disclosure provide a computer readable program, which, when executed in a terminal equipment, causes the terminal equipment to carry out the method as described in the embodiments of the first aspect.

Embodiments of this disclosure provide a computer storage medium, including a computer readable program, which causes a terminal equipment to carry out the method as described in the embodiments of the first aspect.

Embodiments of this disclosure provide a computer readable program, which, when executed in a network device, causes the network device to carry out the method as described in the embodiments of the second aspect.

Embodiments of this disclosure provide a computer storage medium, including a computer readable program, which causes a network device to carry out the method as described in the embodiments of the second aspect.

The above apparatuses and methods of this disclosure may be implemented by hardware, or by hardware in combination with software. This disclosure relates to such a computer-readable program that when the program is executed by a logic device, the logic device is enabled to carry out the apparatus or components as described above, or to carry out the methods or steps as described above. This disclosure also relates to a storage medium for storing the above program, such as a hard disk, a floppy disk, a CD, a DVD, and a flash memory, etc.

This disclosure is described above with reference to particular embodiments. However, it should be understood by those skilled in the art that such a description is illustrative only, and not intended to limit the protection scope of this disclosure. Various variants and modifications may be made by those skilled in the art according to the spirits and principle of this disclosure, and such variants and modifications fall within the scope of this disclosure.

As to implementations containing the above embodiments, following supplements are further disclosed.1. A method for transmitting parameters, applicable to a terminal equipment, the method including:receiving request information, the request information being used to instruct the terminal equipment to at least transmit parameters of receive antennas; andtransmitting the parameters of the receive antennas of the terminal equipment.2. The method according to supplement1, wherein, the parameters of the receive antennas at least include:the number of ports of the receive antenna, and/or a type of the receive antenna, and/or array configuration of the receive antenna.3. The method according to supplement2, wherein,a port of the receive antenna is a channel on a symbol on the port, the channel being able to be inferred from another symbol on the same port; ora port of the receive antenna is a receiving chain in an independent transceiver unit; ora port of the receive antenna is an effective receive antenna in multiple receive antenna elements.4. The method according to supplement2, wherein,the type of the receive antenna is at least one of an omnidirectional antenna, a directional antenna or a cross-polarized antenna.5. The method according to supplement2, wherein,the array configuration of the receive antenna includes at least one of the following parameters:the number of antenna panels in a first dimension and/or the number of antenna panels in a second dimension;the number of antennas in the first dimension and/or the number of antennas in the second dimension in an antenna panel;a polarization direction of an antenna;a distance between antenna panels in the first dimension and/or a distance between antenna panels in the second dimension; ora distance between antennas in the first dimension and/or in the second dimension in an antenna panel.6. The method according to supplement1, wherein,the parameters of the receive antennas are transmitted via at least one of radio resource control (RRC) signaling or a media access control control element (MAC CE).7. The method according to supplement1, wherein,the method further includes:based on the parameters of the receive antennas, selecting or generating a model for compressing channel state information.8. A method for receiving parameters, applicable to a network device, the method including:transmitting request information, the request information being used to instruct a terminal equipment to at least transmit parameters of receive antennas; andreceiving the parameters of the receive antennas of the terminal equipment.9. The method according to supplement8, wherein,the parameters of the receive antennas at least include:the number of ports of the receive antenna, and/or a type of the receive antenna, and/or array configuration of the receive antenna.10. The method according to supplement9, wherein,a port of the receive antenna is a channel on a symbol on the port, the channel being able to be inferred from another symbol on the same port; ora port of the receive antenna is a receiving chain in an independent transceiver unit; ora port of the receive antenna is an effective receive antenna in multiple receive antenna elements.11. The method according to supplement9, wherein,the type of the receive antenna is at least one of an omnidirectional antenna, a directional antenna or a cross-polarized antenna.12. The method according to supplement9, wherein,the array configuration of the receive antenna includes at least one of the following parameters:the number of antenna panels in a first dimension and/or the number of antenna panels in a second dimension;the number of antennas in the first dimension and/or the number of antennas in the second dimension in an antenna panel;a polarization direction of an antenna;a distance between antenna panels in the first dimension and/or a distance between antenna panels in the second dimension; ora distance between antennas in the first dimension and/or in the second dimension in an antenna panel.13. The method according to supplement8, wherein,the parameters of the receive antennas are transmitted via at least one of radio resource control (RRC) signaling or a media access control control element (MAC CE).14. The method according to supplement8, wherein,the method further includes:based on the parameters of the receive antennas, selecting or generating a model for decompressing channel state information.