WO2020199915A1

WO2020199915A1 - Data transmitting method and apparatus, data receiving method and apparatus, system, and storage medium

Info

Publication number: WO2020199915A1
Application number: PCT/CN2020/079816
Authority: WO
Inventors: 边峦剑; 戴博; 刘锟; 杨维维
Original assignee: 中兴通讯股份有限公司
Priority date: 2019-03-29
Filing date: 2020-03-18
Publication date: 2020-10-08
Also published as: CN110535603A

Abstract

The present application provides a data transmitting method and apparatus, a data receiving method and apparatus, and a computer-readable storage medium. The data transmitting method comprises: based on configuration information, transmitting a channel state information reference signal; and transmitting the configuration information to a second communication node.

Description

Data transmission method and device, data receiving method, device, system and storage medium

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office with application number 201910252305.4 on March 29, 2019. The entire content of this application is incorporated into this application by reference.

Technical field

This application relates to the field of wireless communication networks, such as a data transmission method and device, and a data receiving method, device, system, and storage medium.

Background technique

In Release-15 and previous machine type communication (Machine Type Communication, MTC), channel state information (Channel State Information, CSI) measurement is based on cell-specific reference signals (Cell-specific Reference Signal, CRS). Whether it is a low-complexity terminal or a non-low-complexity terminal, CRS is used for CSI measurement. Since CRS only supports a maximum of 4 antenna ports, and cannot support a number of transmit antennas greater than 4, in the Release-16 version of MTC, for non-low complexity terminals, consider supporting Channel State Information Reference Signal (Channel State Information). -Reference Signal (CSI-RS) CSI measurement to obtain performance gains brought by more transmitting antennas. Nevertheless, because the CSI-RS is transmitted on the full bandwidth, it may cause interference to other narrowbands in the broadband, and cause performance loss to other terminals.

Summary of the invention

This application provides a data transmission method and device, and a data receiving method, device, system, and storage medium.

An embodiment of the application provides a data transmission method, including:

Based on the configuration information, send the channel state information reference signal;

Send the configuration information to the second communication node.

The embodiment of the application provides a data receiving method, including:

The second communication node receives the configuration information sent by the first communication node;

According to the configuration information, the channel state information reference signal sent by the first communication node is processed.

The first communication node sends the configuration information of the first transmission frequency band and the configuration information of the second transmission frequency band to the second communication node;

The configuration information of the second transmission frequency band is determined according to the configuration information of the first transmission frequency band.

An embodiment of the application provides a data transmission device, including:

The first sending unit is configured to send a channel state information reference signal based on the configuration information;

The first sending unit is further configured to send the configuration information to the second communication node.

In an implementation manner, the first sending unit is used to:

In the first subframe, the channel state information reference signal is sent based on the first transmission bandwidth.

In an embodiment, the device further includes:

The configuration information includes first high layer configuration signaling, and the first high layer configuration signaling includes the configuration of the first subframe.

In an implementation manner, the first transmission bandwidth is: a bandwidth of a single transmission narrowband used for physical channel data transmission.

In an implementation manner, the first sending unit is used to:

In the second subframe, the channel state information reference signal is sent based on the second transmission bandwidth.

In an embodiment, the device further includes:

The configuration information includes a second high layer configuration signaling, and the second high layer configuration signaling includes a configuration of the second subframe.

In one embodiment, the device includes:

The first transmission bandwidth includes one of a narrowband bandwidth and a wideband bandwidth, the second transmission bandwidth includes one of a narrowband bandwidth and a wideband bandwidth, and the first transmission bandwidth and the second transmission bandwidth are different from each other.

In an embodiment, the device further includes:

The configuration information includes a first number of bits of downlink control information signaling, and the downlink control information signaling indicates that the transmission bandwidth is a narrowband bandwidth or a wideband bandwidth.

In an embodiment, the device further includes:

The configuration information includes a second number of bits of downlink control information signaling, and the downlink control information signaling indicates one of the following: not sending channel state information reference signals, sending channel state information reference signals based on narrowband bandwidth, and based on wideband bandwidth Send the channel state information reference signal.

In an implementation manner, the first sending unit is used to:

When the number of repeated transmissions of the physical channel is greater than or equal to 2, the resource unit occupied by the channel state information reference signal on the subframe participates in the data mapping of the physical channel, and the resource unit is not used for the data of the physical channel transmission.

In an embodiment, the device further includes:

When the number of repeated transmissions of the physical channel is equal to 1, the resource unit occupied by the channel state information reference signal on the subframe does not participate in the data mapping of the physical channel, and the resource unit is not used for data transmission of the physical channel .

In an embodiment, the device further includes:

The configuration information includes the number of antenna ports of the channel state information reference signal, and the number of antenna ports of the channel state information reference signal is greater than the number of antenna ports of the cell-specific reference signal.

In an embodiment, the device further includes:

The N antenna ports in the channel state information reference signal correspond to the antenna ports of the cell-specific reference signal in one-to-one correspondence according to port numbers, where N is the number of antenna ports of the cell-specific reference signal, and N is greater than or equal to 1.

In an embodiment, the device further includes:

The number of antenna ports of the channel state information reference signal is equal to the number of antenna ports of the cell-specific reference signal, and the antenna ports of the channel state information reference signal and the antenna ports of the cell-specific reference signal correspond one-to-one according to port numbers.

An embodiment of the application provides a data receiving device, including:

A receiving unit, configured to: the second communication node receives configuration information sent by the first communication node, where the configuration information includes a transmission bandwidth for sending a channel state information reference signal;

The processing unit is configured to process the channel state information reference signal sent by the first communication node according to the configuration information.

In one embodiment, the processing unit is used to:

According to the transmission bandwidth of the channel state information reference signal indicated by the configuration information, the channel state information is calculated by using the channel state information reference signal sent by the first communication node, and the transmission bandwidth is a narrowband bandwidth or a wideband bandwidth.

In an embodiment, the device further includes:

When the number of repeated transmissions of the physical channel is greater than or equal to 2, the resource unit occupied by the channel state information reference signal is processed in a puncturing manner.

In an embodiment, the device further includes:

When the number of repeated transmissions of the physical channel is equal to 1, the resource unit occupied by the channel state information reference signal is processed in a rate matching manner.

In one embodiment, the processing unit is used to:

The channel state information is measured based on the cell-specific reference signal and the channel state information reference signal.

In an embodiment, the processing unit is further configured to:

The second communication node measures the channel state information based on the channel state information reference signal of the N antenna ports and the cell-specific reference signal of the N antenna ports, where N is the number of antenna ports of the cell-specific reference signal, where N is greater than Or an integer equal to 1.

In an embodiment, the processing unit is further configured to:

For the antenna ports of the channel state information reference signal other than the N antenna ports, the channel state information is measured based on the channel state information reference signal.

In one embodiment, the processing unit is used to:

Performing radio resource management measurements based on the cell-specific reference signal and the channel state information reference signal;

Wherein, the radio resource management measurement includes at least one of reference signal received power and reference signal received quality.

The second sending unit is configured to: the first communication node sends the configuration information of the first transmission frequency band and the configuration information of the second transmission frequency band to the second communication node;

In an implementation manner, the configuration information of the first transmission frequency band includes the bandwidth of the first transmission frequency band;

The second sending unit is configured to send the bandwidth information of the first transmission frequency band to the second communication node by the first communication node using a main system information block.

In an implementation manner, the configuration information of the second transmission frequency band includes the bandwidth of the second transmission frequency band;

The third sending unit is configured to send notification information of the bandwidth of the second transmission frequency band to the second communication node by using a main system information block or high-level configuration signaling.

In one embodiment, the bandwidth of the first transmission band is L physical resource blocks, and the bandwidth of the second transmission band is L+2K physical resource blocks, where L is an integer greater than or equal to 1, K is an integer.

In an implementation manner, the bandwidth of the first transmission frequency band is L physical resource blocks, the bandwidth of the second transmission frequency band is L+2K+1 physical resource blocks, and the second transmission frequency band is offset by half Physical resource blocks, where L is an integer greater than or equal to 1, and K is an integer.

In an implementation manner, the configuration information of the second transmission frequency band includes: an offset value of the reference subcarrier index of the second transmission frequency band relative to the reference subcarrier index of the first transmission frequency band.

In an embodiment, the device further includes a determining unit, and the determining unit is configured to:

Determine the reference subcarrier index of the first transmission frequency band according to the bandwidth of the first transmission frequency band;

The offset value of the reference subcarrier index of the second transmission frequency band relative to the reference subcarrier index of the first transmission frequency band is determined according to the reference subcarrier index of the first transmission frequency band.

An embodiment of the present application provides a storage medium that stores a computer program, and when the computer program is executed by a processor, any one of the methods in the embodiments of the present application is implemented.

Regarding the above embodiments and other aspects of the present application and their implementation manners, more descriptions are provided in the description of the drawings, specific implementation manners, and claims.

Description of the drawings

Fig. 1 is a flowchart of a data transmission method according to an embodiment of the present invention.

Fig. 2 is a flowchart of a data receiving method according to an embodiment of the present invention.

Fig. 3 is a flowchart of a data transmission method according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of bandwidth configuration of a data transmission method according to an embodiment of the present invention.

Fig. 5 is a schematic diagram of bandwidth configuration of a data transmission method according to another embodiment of the present invention.

Fig. 6 is a schematic diagram of bandwidth configuration of a data transmission method according to another embodiment of the present invention.

Fig. 7 is a structural block diagram of a data transmission device according to an embodiment of the present invention.

Fig. 8 is a structural block diagram of a data receiving device according to an embodiment of the present invention.

Fig. 9 is a structural block diagram of a data transmission device according to an embodiment of the present invention.

Figure 10 is a schematic structural diagram of an embodiment of a user equipment/user terminal of this application.

FIG. 11 is a schematic structural diagram of an embodiment of a base station of this application.

FIG. 12 is a schematic structural diagram of an embodiment of a communication system of this application.

detailed description

Hereinafter, the embodiments of the present application will be described in detail with reference to the drawings. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other arbitrarily if there is no conflict.

Fig. 1 shows a flowchart of a data transmission method according to an embodiment of the present invention. As shown in Figure 1, the data transmission method includes:

Step S110, based on the configuration information, send a channel state information reference signal.

Step S120: Send the configuration information to the second communication node.

The channel state information reference signal CSI-RS is a downlink reference signal used to estimate channel state information. In the embodiment of the present invention, the subframe configuration for transmitting the channel state information reference signal can be set in the configuration information. In step S110, the channel state information reference signal may be sent based on the subframe configuration in the configuration information.

In step S120, the first communication node sends configuration information to the second communication node. In an example, the first communication node may include a base station, and the second communication node may include a User Equipment (UE). The base station sends configuration information to the UE, and sends the channel state information reference signal based on the configuration information, so that the UE can operate on the channel state information reference signal according to the configuration information after receiving the configuration information.

In an implementation manner, sending the channel state information reference signal based on the configuration information includes:

In the first subframe, the channel state information reference signal is sent based on the first transmission bandwidth. The first subframe is a set of subframes, and the set of subframes includes one or more subframes.

As mentioned above, the channel state information reference signal can be sent based on the subframe configuration in the configuration information. For example, it may be based on the first CSI-RS subframe configuration in the configuration information, and on the first subframe corresponding to the first CSI-RS subframe configuration, the first communication node sends to the second communication node based on the first transmission bandwidth. Send the channel state information reference signal CSI-RS.

In an implementation manner, the configuration information includes first high layer configuration signaling, and the first high layer configuration signaling includes the configuration of the first subframe.

In an example, the first communication node sends high-level configuration signaling A, and the high-level configuration signaling A is used to determine a first CSI-RS subframe configuration, and the configuration corresponding to the first CSI-RS subframe In the subframe, the first communication node sends the channel state information reference signal CSI-RS based on the first transmission bandwidth.

In this implementation manner, the first communication node notifies the second communication node of the subframe configuration information by sending high-level configuration signaling. In an example, the base station notifies the UE of the configuration of the first subframe by sending the first high layer configuration signaling. The base station sends the channel state information reference signal to the UE based on the first transmission bandwidth in the first subframe.

In an example, the first transmission bandwidth is a single narrowband bandwidth, and the first communication node transmits the channel state information reference signal CSI-RS on the narrowband used for physical channel data transmission. Wherein, the physical channel includes a physical control channel or a physical shared channel. For example, the first communication node may send the CSI-RS on the narrowband used for data transmission of the physical downlink control channel or the physical downlink shared channel. The first communication node does not send the CSI-RS on other transmission narrowbands, which can prevent the CSI-RS from causing interference to other narrowbands.

In the second subframe, the channel state information reference signal is sent based on the second transmission bandwidth. The second subframe is a subframe set, and the subframe set includes one or more subframes.

In an implementation manner, the configuration information includes a second high layer configuration signaling, and the second high layer configuration signaling includes a configuration of the second subframe.

In an example, the first communication node sends a high-level configuration signaling B, and the high-level configuration signaling B is used to determine a second CSI-RS subframe configuration, and the configuration corresponding to the second CSI-RS subframe In the subframe, the first communication node sends the channel state information reference signal CSI-RS based on the second transmission bandwidth.

In an implementation manner, the first CSI-RS subframe configuration and the second CSI-RS subframe configuration may be periodic or aperiodic. For periodic CSI-RS subframe configuration, the CSI-RS subframe configuration may include a CSI-RS transmission period and a CSI-RS subframe offset. The CSI-RS transmission subframe can be determined by the CSI-RS transmission period and the CSI-RS subframe offset. For aperiodic CSI-RS subframe configuration, the subframe configuration may include a measurement subframe set. The CSI-RS is transmitted on a subframe corresponding to the measurement subframe set, and the CSI-RS transmission subframe can be determined from the measurement subframe set.

In an embodiment, the first transmission bandwidth includes one of a narrowband bandwidth and a broadband bandwidth, the second transmission bandwidth includes one of a narrowband bandwidth and a broadband bandwidth, and the first transmission bandwidth and the second transmission The bandwidth is different from each other.

In this embodiment, one of the first transmission bandwidth and the second transmission bandwidth is a narrowband bandwidth, and the other is a broadband bandwidth. Among them, the broadband bandwidth includes multiple narrowband bandwidths or full bandwidths. The plurality of narrow bands may be continuous or discontinuous. For example, in enhanced Machine Type Communication (eMTC), one transmission narrowband includes 6 physical resource blocks (PRB). Among them, eMTC is based on the evolution of the Long Term Evolution (LTE) protocol and is applied to the Internet of Things scenario.

In an example, when the CSI-RS is transmitted based on the first transmission bandwidth, in the CSI-RS subframe, the CSI-RS is transmitted on multiple transmission narrowbands or full bandwidth. When the CSI-RS is sent based on the second transmission bandwidth, in the CSI-RS subframe, the CSI-RS is sent on the narrowband used for physical channel data transmission.

As mentioned above, the first communication node sends high-level configuration signaling A and high-level configuration signaling B, and the first CSI-RS subframe configuration and the second CSI-RS subframe configuration. In the embodiment of the present invention, the high-level configuration signaling A and the high-level configuration signaling B are used together to support both narrowband CSI-RS (single narrowband bandwidth) and wideband CSI-RS (multiple narrowband bandwidths or full bandwidth). Effect. When the CSI-RS transmission bandwidth is a single narrowband bandwidth, the first communication node transmits the CSI-RS on the narrowband used for physical channel data transmission. In this case, the interference of CSI-RS to other narrowband transmissions can be avoided, and the second communication node can report more suitable channel state information CSI for the narrowband. When the CSI-RS transmission bandwidth is multiple narrowband bandwidths, the first communication node transmits the CSI-RS on the multiple narrowbands. In this case, the CSI-RS can measure multiple narrowband CSI in one subframe, thereby reporting the most suitable transmission narrowband.

In an embodiment, the configuration information includes a first number of bits of Downlink Control Information (DCI) signaling, and the DCI signaling indicates that the transmission bandwidth is a narrowband bandwidth or a wideband bandwidth.

In this implementation manner, the first communication node sends downlink control information to the second communication node. Wherein, a first number of bits can be set in the configuration information to indicate that the transmission bandwidth is a narrowband bandwidth or a wideband bandwidth. For example, it is determined that the CSI-RS transmission bandwidth is a narrowband bandwidth or a wideband bandwidth through 1-bit DCI signaling.

In an example, the above-mentioned high-level configuration signaling A and the above-mentioned 1-bit DCI signaling can be used together, and the high-level configuration signaling A determines the transmission subframe of the CSI-RS, and the DCI signaling determines the transmission bandwidth of the CSI-RS. When the CSI-RS transmission bandwidth is a narrowband bandwidth, the first communication node sends the CSI-RS on the narrowband used for physical channel data transmission. When the CSI-RS transmission bandwidth is a broadband bandwidth, the first communication node sends the CSI-RS on all narrowbands.

In an embodiment, the configuration information includes a second number of bits of DCI signaling, and the DCI signaling indicates one of the following: not sending channel state information reference signals, sending channel state information reference signals based on a narrowband bandwidth, The channel state information reference signal is sent based on the broadband bandwidth.

In this implementation manner, the first communication node sends the downlink control information DCI to the second communication node. Wherein, a second number of bits can be set in the configuration information to indicate the status of the CSI-RS. In one example, it is determined by 2-bit DCI signaling whether to send CSI-RS and the transmission bandwidth of CSI-RS. For example, it is determined by 2-bit DCI signaling that the CSI-RS is in one of the following states: CSI-RS is not sent, CSI-RS is sent on a narrowband, and CSI-RS is sent on a broadband bandwidth.

In an implementation manner, sending a channel state information reference signal includes:

In this implementation manner, when the maximum number of repeated transmissions configured for the physical channel by the first communication node is greater than or equal to 2, on the CSI-RS subframe, the resource element (Resource Element, RE) occupied by the CSI-RS Participating in the data mapping of the physical channel is not used for data transmission of the physical channel. These resource units are used to transmit CSI-RS, and the first communication node transmits the CSI-RS in a puncturing manner. Wherein, the physical channel includes at least one of the following: a physical downlink control channel and a physical downlink shared channel.

Specifically, when the physical channel data is mapped, the data of the physical channel is mapped to the CSI-RS RE. However, after mapping, the data on these REs are not sent, but the data on these REs mapped with the physical channel is punctured, that is, the data on these REs are deleted, and then the CSI-RS is sent on these REs.

Wherein, the number of repeated transmissions of the physical channel includes: for a physical downlink control channel, the number of repeated transmissions is the maximum number of repetitions of the physical downlink control channel; for a physical downlink shared channel, the number of repeated transmissions is DCI signaling The notified number of repetitions of the physical downlink shared channel.

In this implementation manner, when the maximum number of repeated transmissions configured by the first communication node for the physical channel is equal to 1, the physical channel has no repeated transmissions. On the CSI-RS subframe, the resource unit occupied by the CSI-RS It does not participate in the data mapping of the physical channel, nor is it used for the data transmission of the physical channel, and these resource units are used to send CSI-RS. That is, rate matching is required during channel coding, and the first communication node transmits the CSI-RS in a rate matching manner. Specifically, during physical channel data mapping, the physical channel data is not mapped on the resource units occupied by the CSI-RS, and the CSI-RS is sent on these resource units. Wherein, the physical channel includes at least one of the following: a physical downlink control channel and a physical downlink shared channel.

In an embodiment, the configuration information includes the number of antenna ports of the channel state information reference signal, and the number of antenna ports of the channel state information reference signal is greater than the number of antenna ports of the cell-specific reference signal.

In one example, the first communication node may include a base station. The number of CSI-RS antenna ports configured by the base station for the physical channel is greater than the number N of CRS antenna ports. Among them, the antenna ports are defined with corresponding serial numbers to distinguish between antenna ports.

In one embodiment, the method includes:

In an example, if the number of CSI-RS antenna ports configured by the first communication node for the physical channel is greater than the number of CRS antenna ports N, then the N CSI-RS antenna ports and CRS antennas in the channel state information reference signal The ports correspond one to one according to the port number. For example, the base station configures 8 CSI-RS antenna ports for the physical channel, and the port numbers are 15-22 respectively. The 4 CRS antenna ports used by the base station are numbered from 0 to 3. In this case, CSI-RS antenna ports 15 to 18 correspond to CRS antenna ports 0 to 3 in sequence according to port numbers.

In one embodiment, the method further includes:

If the number of CSI-RS antenna ports configured by the base station for the physical channel is equal to the number N of cell-specific reference signal CRS antenna ports, the relationship between the CSI-RS antenna ports and the CRS antenna ports is a one-to-one mapping relationship.

For example, the first communication node configures 4 CSI-RS antenna ports for the physical channel, and the port numbers are 15-18 respectively. In addition, under normal circumstances, the base station may use up to 4 CRS antenna ports, the port numbers of which are 0 to 3 respectively. In this case, CSI-RS antenna ports 15 to 18 correspond to CRS antenna ports 0 to 3 in sequence according to port numbers. That is, the CSI-RS antenna port with port number 15 corresponds to the CRS antenna port with port number 0, the CSI-RS antenna port with port number 16 corresponds to the CRS antenna port with port number 1, and so on, the last port number is The CSI-RS antenna port of 18 corresponds to the CRS antenna port of port number 3.

In the above example, the first communication node configures the mapping relationship between the CSI-RS antenna port and the CRS antenna port, that is, configures the corresponding relationship between the CSI-RS antenna port and the CRS antenna port. On this basis, the second communication node can use the mapping relationship to perform joint CSI-RS and CRS CSI measurement or radio resource management measurement, thereby improving measurement accuracy.

In summary, in the data transmission method of the embodiment of the present invention, the CSI-RS is configured with two transmission bandwidths, one of which is a wideband CSI-RS, that is, the CSI-RS is transmitted on a narrowband bandwidth. The other is narrowband CSI-RS, that is, the CSI-RS is sent on the narrowband of the current transmission physical channel. The advantage of this process is that wideband CSI-RS can be used to measure full-bandwidth CSI, and the most suitable transmission narrowband can be reported, and a longer measurement time interval can be configured; narrowband CSI-RS can be used to measure current narrowband CSI, and will not Other narrow-band transmissions cause interference, and a shorter measurement interval can be configured. With this method, the goal of reducing CSI-RS interference can be achieved.

Fig. 2 is a flowchart of a data receiving method according to an embodiment of the present invention. As shown in Figure 2, the data receiving method includes:

Step S210: The second communication node receives the configuration information sent by the first communication node.

Step S220: Process the channel state information reference signal sent by the first communication node according to the configuration information.

The embodiment of the present invention provides a method for receiving configuration information. Specifically, in step S210, the second communication node receives the configuration information sent by the first communication node. In step S220, according to the configuration information, the second communication node operates the channel state information reference signal CSI-RS.

In an example, the first communication node may include a base station, and the second communication node may include a UE. The UE receives the configuration information sent by the base station, and operates on the channel state information reference signal according to the subframe configuration in the configuration information.

In an implementation manner, processing the channel state information reference signal sent by the first communication node includes:

According to the transmission bandwidth of the channel state information reference signal indicated by the configuration information, the channel state information is calculated by using the channel state information reference signal sent by the first communication node, and the transmission bandwidth is a narrowband bandwidth or a wideband bandwidth. Wherein, the broadband bandwidth includes multiple narrowband bandwidths or full bandwidths, and the multiple narrowbands may be continuous or discontinuous.

In one case, if it is determined that the transmission bandwidth of the channel state information reference signal on the subframe is multiple transmission narrowband bandwidths, the channel state information is calculated for the multiple transmission narrowbands.

Specifically, the second communication node receives CSI-RS configuration information. According to the configuration information, if it is determined that the CSI-RS transmission bandwidth on the subframe k is multiple narrowband bandwidths, then the CSI is calculated for the multiple narrowbands of the subframe k. The CSI may be a wideband CSI calculated for multiple transmission narrowbands, or it may be an optimal narrowband CSI calculated for all transmission narrowbands. Normally, the receiving end evaluates the CSI and quantizes it back to the transmitting end. In the embodiment of the invention, after calculating the CSI, the second communication node may report the calculation result to the first communication node.

In another case, if it is determined that the transmission bandwidth of the channel state information reference signal on the subframe is a single transmission narrowband bandwidth, the channel state information is calculated for the narrowband used for the physical channel data transmission on the subframe.

Specifically, according to the configuration information, if it is determined that the CSI-RS transmission bandwidth on the subframe k is a single narrowband bandwidth, the CSI is calculated for the single narrowband used for the physical channel data transmission of the subframe k. Wherein, the physical channel includes a physical control channel or a physical shared channel. The CSI is used for the current narrowband being measured. In this transmission method that uses a single transmission narrowband bandwidth, the narrowband CSI-RS can be used to measure the current narrowband CSI without causing interference to other transmission narrowbands.

In the foregoing implementation manner, the channel state information CSI includes at least one of the following: Precoding Matrix Indication (PMI), Channel Quality Indication (CQI), Rank Indication (RI).

In an implementation manner, the method further includes: when the number of repeated transmissions of the physical channel is greater than or equal to 2, processing the resource unit occupied by the channel state information reference signal in a puncturing manner.

As mentioned above, if it is determined that the number of repeated transmissions of the physical channel configuration is greater than or equal to 2, the first communication node transmits the CSI-RS in a puncturing manner. On the CSI-RS subframe, the resource unit occupied by the CSI-RS participates in the data mapping of the physical channel, and is not used for the data transmission of the physical channel. Therefore, in this embodiment in which the physical channel adopts repeated transmission, the second communication node processes the data of the physical channel in a puncturing manner for the resource unit occupied by the CSI-RS. Specifically, based on the resource units occupied by the CSI-RS indicated in the received configuration information, the second communication node knows that the received signals on these resource units are CSI-RS, and therefore does not use the resource units on these resource units. The received data is decoded, the demodulation information on these resource units is set to 0, and then the demodulation information of other resource units is combined for decoding.

In an implementation manner, the method further includes: when the number of repeated transmissions of the physical channel is equal to 1, processing the resource unit occupied by the channel state information reference signal in a rate matching manner.

As mentioned above, when the maximum number of repeated transmissions configured for the physical channel by the first communication node is equal to 1, the first communication node transmits the CSI-RS in a rate matching manner. In the CSI-RS subframe, the resource unit occupied by the CSI-RS does not participate in the data mapping of the physical channel, nor is it used for the data transmission of the physical channel. Therefore, in such an implementation manner in which the physical channel adopts non-repetitive transmission, for the resource unit occupied by the CSI-RS, the second communication node processes the data of the physical channel in a rate matching manner. Specifically, based on the resource units occupied by the CSI-RS indicated in the received configuration information, the second communication node knows that the received signals on these resource units are CSI-RS, and therefore no longer performs the control on these resource units. The received data is demodulated and decoded, but the received data of the physical channel on other resource units is used for demodulation and decoding.

In an embodiment, the method further includes: measuring channel state information based on the cell-specific reference signal and the channel state information reference signal.

In this implementation manner, the second communication node uses the channel state information reference signal CSI-RS and the cell-specific reference signal CRS to jointly measure the channel state information CSI, which can improve the measurement accuracy.

In an implementation manner, measuring the channel state information based on the cell-specific reference signal and the channel state information reference signal further includes:

In this implementation manner, the second communication node jointly measures the channel state information based on the CSI-RS of the N antenna ports and the CRS of the N antenna ports, thereby improving the accuracy of CSI measurement.

In this embodiment, if it is determined that the number of CSI-RS antenna ports is greater than the number of CRS antenna ports N, the second communication node jointly measures the channel state information based on the CSI-RS of the N antenna ports and the CRS of the N antenna ports . For other CSI-RS antenna ports, the second communication node measures channel state information based on CSI-RS. For example, the second communication node uses 8 CSI-RS antenna ports, and the port numbers are 15-22 respectively. In addition, the second communication node uses 4 CRS antenna ports, and the port numbers are 0-3 respectively. In this case, the CSI is measured jointly based on the CSI-RS of ports 15-18 and the CRS of ports 0-3, and the CSI is measured based on the CSI-RS of ports 19-22, thereby improving the accuracy of CSI measurement.

In one embodiment, the method further includes:

Among them, wireless resource management provides service quality assurance for wireless user terminals in the network under the condition of limited bandwidth. Through the wireless resource management, the available resources of the wireless transmission part and the network can be flexibly allocated and dynamically adjusted to maximize the utilization of the wireless spectrum, prevent network congestion and keep the signaling load as small as possible.

Reference Signal Receiving Power (RSRP) is one of the key parameters and physical layer measurement requirements that can represent wireless signal strength in the LTE network. It is the signal power received on all REs that carry the reference signal in a certain symbol average value.

Reference Signal Receiving Quality (RSRQ) represents the LTE reference signal receiving quality. This metric can rank different LTE candidate cells according to signal quality. This measurement can be used as input for handover and cell reselection decisions.

Fig. 3 is a flowchart of a data transmission method according to an embodiment of the present invention. As shown in Figure 3, the data transmission method includes:

Step S310: The first communication node sends configuration information of the first transmission frequency band and configuration information of the second transmission frequency band to the second communication node.

In an embodiment, the configuration information of the first transmission frequency band includes the bandwidth of the first transmission frequency band; the first communication node uses the main system information block to send the first transmission to the second communication node Bandwidth information of the frequency band.

The embodiment of the present invention provides a configuration information transmission method. Specifically, in step S310, the first communication node sends configuration information of the first transmission frequency band, for example, the bandwidth of the first transmission frequency band, to the second communication node. In step S320, the first communication node sends configuration information of the second transmission frequency band, for example, the bandwidth of the second transmission frequency band, to the second communication node. In addition, the first communication node determines the configuration information of the second transmission frequency band according to the configuration information of the first transmission frequency band. The first communication node respectively uses two transmission frequency bands to send the cell-specific reference signal CRS and physical channel data to the second communication node.

In an example, the first communication node may include a base station, and the second communication node may include a UE. The base station sends the cell-specific reference signal CRS and physical channel data to the UE in the first transmission frequency band and the second transmission frequency band, respectively.

In this embodiment, the physical channel includes at least one of the following: a physical downlink control channel and a physical downlink shared channel.

In this implementation manner, the first communication node uses master system information block (Master Information Block, MIB) information to notify the second communication node of the bandwidth of the first transmission frequency band. Among them, MIB includes a limited number of the most important and commonly used transmission parameters used to read other cell information, such as: system bandwidth, system frame number, and physical hybrid automatic retransmission indicator channel (Physical Hybrid ARQ Indicator Channel, PHICH) configuration information .

In one embodiment, the method further includes:

The configuration information of the second transmission frequency band includes the bandwidth of the second transmission frequency band;

The notification information of the bandwidth of the second transmission frequency band is sent to the second communication node by using the main system information block or high-level configuration signaling.

In an implementation manner, the configuration information of the second transmission frequency band is determined according to the configuration information of the first transmission frequency band, including:

If the bandwidth of the first transmission band is L physical resource blocks, the bandwidth of the second transmission band is L+2K physical resource blocks, where L is an integer greater than or equal to 1, and K is an integer.

In this implementation manner, the bandwidths of the first transmission band and the second transmission band are restricted to the same odd number of PRBs or the same number of even PRBs. Fig. 4 is a schematic diagram of bandwidth configuration of a data transmission method according to an embodiment of the present invention. As shown in FIG. 4, when the center subcarriers of the first transmission frequency band and the second transmission frequency band overlap, the PRBs of the two transmission frequency bands are aligned. Referring to FIG. 4, the first transmission frequency band is 6 PRBs, and the second transmission frequency band is 8 PRBs. When the center subcarriers of the two frequency bands overlap, the PRBs of the two frequency bands are aligned.

Wherein, the overlap of the center subcarriers of the first transmission frequency band and the second transmission frequency band includes: the G/2th subcarrier of the first transmission frequency band overlaps the H/2th subcarrier of the second transmission frequency band, where G is the The number of subcarriers included in one transmission band, and H is the number of subcarriers included in the second transmission band.

Using the above method, the center sub-carriers of the first transmission frequency band and the second transmission frequency band overlap and the PRBs are aligned. In this way, after receiving the CRS and physical channel data, the second communication node can use the CRS to The physical channel performs related measurement and estimation.

In an implementation manner, the configuration information of the second transmission band is determined according to the configuration information of the first transmission band, including: if the bandwidth of the first transmission band is L physical resource blocks, and the first transmission band The bandwidth of the second transmission band is L+2K+1 physical resource blocks, then the second transmission band is offset by half a physical resource block, that is, by 6 subcarriers, where L is an integer greater than or equal to 1, and K Is an integer.

In the above method, the bandwidths of the first transmission band and the second transmission band are not limited to the same odd number of PRBs or the same number of even PRBs.

Fig. 5 is a schematic diagram of bandwidth configuration of a data transmission method according to another embodiment of the present invention. As shown in FIG. 5, in the case where one transmission frequency band is an odd PRB and the other transmission frequency band is an even PRB, if the center sub-carriers of the first transmission frequency band and the second transmission frequency band overlap, the two transmissions The PRB of the frequency band is shifted by half of the PRB, that is, 6 subcarriers. Referring to FIG. 5, the first transmission frequency band is 6 PRBs, and the second transmission frequency band is 9 PRBs. When the center subcarriers of the two frequency bands overlap, the PRBs of the two frequency bands cannot be aligned.

Therefore, the second transmission frequency band is shifted by 6 subcarriers, so that the PRB of the second transmission frequency band is aligned with the PRB of the first transmission frequency band.

Fig. 6 is a schematic diagram of bandwidth configuration of a data transmission method according to another embodiment of the present invention. Referring to FIGS. 5 and 6, based on the bandwidth configuration of FIG. 5, the second transmission frequency band is shifted by half a PRB, that is, 6 subcarriers, so that the PRBs of the two frequency bands are aligned. The alignment of the PRB of the second transmission frequency band and the PRB of the first transmission frequency band is as shown in FIG. 6.

The information of the offset value of the reference subcarrier index of the second transmission frequency band relative to the reference subcarrier index of the first transmission frequency band is sent by using high-level configuration signaling.

The configuration information of the second transmission frequency band is determined according to the configuration information of the first transmission frequency band, and includes:

In an example, first, the transmitting end determines the reference subcarrier index of the first transmission frequency band according to the bandwidth of the first transmission frequency band; secondly, because the transmitting end aligns the PRBs of the first transmission frequency band and the second transmission frequency band, it needs to Determine the reference subcarrier index L2 of the second transmission frequency band according to the reference subcarrier index L1 of the first transmission frequency band, and then obtain the relative position difference between the reference subcarrier indexes L1 and L2, that is, the reference subcarrier index of the second transmission frequency band. The offset value of the carrier index relative to the reference subcarrier index of the first transmission frequency band; then, the transmitting end sends the offset value to the terminal. In addition, the terminal can learn the reference subcarrier index of the first transmission frequency band through the bandwidth of the first transmission frequency band. Then, the terminal knows the reference subcarrier index of the first transmission frequency band and the offset value, thereby determining the second transmission The reference subcarrier index of the frequency band, that is, the frequency domain position of the second transmission frequency band. Using this method, it can also be ensured that the PRB of the second transmission frequency band is aligned with the PRB of the first transmission frequency band.

The reference subcarrier index may be the starting subcarrier index of the first transmission frequency band, or the G/2th subcarrier index, where G is the number of subcarriers of the first transmission frequency band. For example, the reference subcarrier index may indicate to start sending data from the nth subcarrier, where n is the number of the subcarrier.

In summary, in the data transmission method of the embodiment of the present invention, the bandwidth information and the frequency domain position of the second transmission band are determined according to the first transmission band. The purpose is to align the physical resource blocks of the first transmission band and the second transmission band so that The two frequency bands can cooperate with transmission, the first transmission frequency band sends CRS, and the second transmission frequency band sends physical channel data. After the physical resource blocks are aligned, data processing operations can be more convenient.

Fig. 7 is a structural block diagram of a data transmission device according to an embodiment of the present invention. As shown in FIG. 7, the data transmission device of the embodiment of the present invention includes:

The first sending unit 100 is configured to send a channel state information reference signal based on the configuration information;

In an implementation manner, the first sending unit 100 is configured to:

In an embodiment, the device further includes:

In an implementation manner, the first sending unit 100 is configured to:

In an embodiment, the device further includes:

In one embodiment, the device includes:

In an embodiment, the device further includes:

In an implementation manner, the first sending unit 100 is configured to:

In an embodiment, the device further includes:

Fig. 8 is a structural block diagram of a data receiving device according to an embodiment of the present invention. As shown in FIG. 8, the data receiving device in the embodiment of the present invention includes:

The receiving unit 200 is configured to: the second communication node receives configuration information sent by the first communication node, where the configuration information includes the transmission bandwidth for sending the channel state information reference signal;

The processing unit 300 is configured to process the channel state information reference signal sent by the first communication node according to the configuration information.

In an embodiment, the processing unit 300 is configured to:

In an embodiment, the device further includes:

In an embodiment, the processing unit 300 is configured to:

In an embodiment, the processing unit 300 is further configured to:

In an embodiment, the processing unit 300 is configured to:

Fig. 9 is a structural block diagram of a data transmission device according to an embodiment of the present invention. As shown in FIG. 9, the data transmission device of the embodiment of the present invention includes:

The second sending unit 400 is configured to: the first communication node sends the configuration information of the first transmission frequency band and the configuration information of the second transmission frequency band to the second communication node;

In an implementation manner, the configuration information of the first transmission frequency band includes the bandwidth of the first transmission frequency band; the second sending unit 400 is configured to: the first communication node uses the main system information block to send the The second communication node sends bandwidth information of the first transmission frequency band.

In an implementation manner, the device further includes: a third sending unit 500.

The third sending unit 500 is configured to send notification information of the bandwidth of the second transmission frequency band to the second communication node by using a main system information block or high-level configuration signaling.

In one embodiment, the device further includes a determining unit 600, and the determining unit 600 is configured to:

FIG. 10 is a schematic structural diagram of an embodiment of a user equipment/user terminal of this application. As shown in FIG. 10, a user equipment/user terminal 130 provided in an embodiment of this application includes a memory 1303 and a processor 1304. The user equipment/user terminal 130 may further include an interface 1301 and a bus 1302. The interface 1301, the memory 1303 and the processor 1304 are connected through a bus 1302. The memory 1303 is used to store instructions. The processor 1304 is configured to read the instructions to execute the technical solutions of the foregoing method embodiments applied to user equipment/user terminals. The implementation principles and technical effects are similar, and details are not described herein again.

FIG. 11 is a schematic structural diagram of an embodiment of a base station of this application. As shown in FIG. 11, the base station 140 provided in the embodiment of this application includes a memory 1403 and a processor 1404. The base station may further include an interface 1401 and a bus 1402. The interface 1401, the memory 1403 and the processor 1404 are connected through a bus 1402. The memory 1403 is used to store instructions. The processor 1404 is configured to read the instructions to execute the technical solutions of the foregoing method embodiments applied to the base station. The implementation principles and technical effects are similar, and details are not described herein again.

FIG. 12 is a schematic structural diagram of an embodiment of a communication system of this application. As shown in FIG. 12, the system includes: a user equipment 130 as in the foregoing embodiment and a base station 140 in the foregoing embodiment.

The above are only exemplary embodiments of the present application, and are not used to limit the protection scope of the present application.

Those skilled in the art should understand that the term user terminal encompasses any suitable type of wireless user equipment, such as mobile phones, portable data processing devices, portable web browsers, or vehicle-mounted mobile stations.

In general, the various embodiments of the present application can be implemented in hardware or dedicated circuits, software, logic or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor or other computing device, although the application is not limited thereto.

The embodiments of the present application can be implemented by executing computer program instructions by a data processor of a mobile device, for example, in a processor entity, or by hardware, or by a combination of software and hardware. Computer program instructions can be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code written in any combination of one or more programming languages or Target code.

The block diagram of any logical flow in the drawings of the present application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program can be stored on the memory. The memory can be of any type suitable for the local technical environment and can be implemented using any suitable data storage technology. The memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory, etc. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. RAM can include many forms, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronization Dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). The memory of the system and method described in this application includes but is not limited to these and any other suitable types of memory.

The processor of the embodiment of the present application may be of any type suitable for the local technical environment, such as but not limited to general-purpose computers, special-purpose computers, microprocessors, digital signal processors (Digital Signal Processors, DSP), and application specific integrated circuits (Application Specific Integrated Circuit, ASIC), Field-Programmable Gate Array (FGPA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or processors based on multi-core processor architecture. The general-purpose processor may be a microprocessor or any conventional processor. The foregoing processor may implement or execute the steps of each method disclosed in the embodiments of the present application. The software module may be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

Claims

A data transmission method, including:

Based on the configuration information, send the channel state information reference signal;

Send the configuration information to the second communication node.
The method according to claim 1, wherein said sending a channel state information reference signal based on configuration information comprises:

In the first subframe, the channel state information reference signal is sent based on the first transmission bandwidth.
The method according to claim 2, wherein the configuration information includes a first high layer configuration signaling, and the first high layer configuration signaling includes a configuration of the first subframe.
The method according to claim 2, wherein the first transmission bandwidth is: a bandwidth of a single transmission narrowband used for physical channel data transmission.
The method according to claim 1, wherein said sending a channel state information reference signal based on configuration information comprises:

In the second subframe, the channel state information reference signal is sent based on the second transmission bandwidth.
The method according to claim 5, wherein the configuration information includes a second high layer configuration signaling, and the second high layer configuration signaling includes a configuration of the second subframe.
The method according to claim 2 or 5, wherein the first transmission bandwidth includes one of a narrowband bandwidth and a broadband bandwidth, the second transmission bandwidth includes one of a narrowband bandwidth and a broadband bandwidth, and the first transmission bandwidth and the The second transmission bandwidth is different from each other.
The method according to any one of claims 1-3, wherein the configuration information includes a first number of bits of downlink control information signaling, and the downlink control information signaling indicates that the transmission bandwidth is a narrowband bandwidth or a wideband bandwidth .
The method according to claim 1, wherein the configuration information includes a second number of bits of downlink control information signaling, and the downlink control information signaling indicates one of the following: not sending channel state information reference signals, based on narrowband The bandwidth sends the channel state information reference signal, and the channel state information reference signal is sent based on the broadband bandwidth.
The method according to claim 1, wherein said sending a channel state information reference signal comprises:

In the case that the number of repeated transmissions of the physical channel is greater than or equal to 2, the resource unit occupied by the channel state information reference signal on the subframe participates in the data mapping of the physical channel, and the resource unit is not used for the physical channel Data transfer.
The method according to claim 1, wherein said sending a channel state information reference signal comprises:

When the number of repeated transmissions of the physical channel is equal to 1, the resource unit occupied by the channel state information reference signal on the subframe does not participate in the data mapping of the physical channel, and the resource unit is not used for the physical channel data transmission.
The method according to claim 1, wherein the configuration information includes the number of antenna ports of the channel state information reference signal, and the number of antenna ports of the channel state information reference signal is greater than the number of antenna ports of the cell-specific reference signal.
The method according to claim 12, wherein the N antenna ports in the channel state information reference signal correspond to the N antenna ports of the cell-specific reference signal according to port numbers, wherein the N is all For the number of antenna ports of the cell-specific reference signal, the N is greater than or equal to 1.
The method according to claim 1, further comprising:

The number of antenna ports of the channel state information reference signal is equal to the number of antenna ports of the cell-specific reference signal, and the antenna ports of the channel state information reference signal and the antenna ports of the cell-specific reference signal correspond one-to-one according to port numbers.
A data receiving method includes:

The second communication node receives the configuration information sent by the first communication node;

According to the configuration information, the channel state information reference signal sent by the first communication node is processed.
The method according to claim 15, wherein the processing the channel state information reference signal sent by the first communication node comprises:

The channel state information is calculated by using the channel state information reference signal sent by the first communication node according to the transmission bandwidth of the channel state information reference signal indicated by the configuration information, and the transmission bandwidth is a narrowband bandwidth or a wideband bandwidth.
The method according to claim 15, further comprising:

When the number of repeated transmissions of the physical channel is greater than or equal to 2, the resource unit occupied by the channel state information reference signal is processed in a puncturing manner.
The method according to claim 15, further comprising:

When the number of repeated transmissions of the physical channel is equal to 1, the resource unit occupied by the channel state information reference signal is processed in a rate matching manner.
The method according to claim 15 or 16, further comprising:

The channel state information is measured based on the cell-specific reference signal and the channel state information reference signal.
The method according to claim 19, wherein the measuring channel state information based on the cell-specific reference signal and the channel state information reference signal comprises:

The second communication node measures the channel state information based on channel state information reference signals of N antenna ports and cell-specific reference signals of N antenna ports, where N is the number of antenna ports of the cell-specific reference signal , Wherein the N is an integer greater than or equal to 1.
The method according to claim 20, wherein the measuring channel state information based on the cell-specific reference signal and the channel state information reference signal further comprises:

For antenna ports of channel state information reference signals other than the N antenna ports, measure the channel state information based on the channel state information reference signal.
The method according to claim 15, further comprising:

Performing radio resource management measurements based on the cell-specific reference signal and the channel state information reference signal;

Wherein, the radio resource management measurement includes at least one of reference signal received power and reference signal received quality.
A data transmission method, including:

The first communication node sends the configuration information of the first transmission frequency band and the configuration information of the second transmission frequency band to the second communication node;

The configuration information of the second transmission frequency band is determined according to the configuration information of the first transmission frequency band.
The method according to claim 23, wherein the configuration information of the first transmission frequency band includes the bandwidth of the first transmission frequency band;

The first communication node sends the bandwidth information of the first transmission frequency band to the second communication node by using the main system information block.
The method according to claim 23, wherein the configuration information of the second transmission frequency band includes the bandwidth of the second transmission frequency band;

The notification information of the bandwidth of the second transmission frequency band is sent to the second communication node by using the main system information block or high-level configuration signaling.
The method according to any one of claims 23-25, wherein the configuration information of the second transmission frequency band is determined according to the configuration information of the first transmission frequency band, and comprises:

The bandwidth of the first transmission frequency band is L physical resource blocks, and the bandwidth of the second transmission frequency band is L+2K physical resource blocks, where L is an integer greater than or equal to 1, and K is an integer .
The method according to any one of claims 23-25, wherein the configuration information of the second transmission frequency band is determined according to the configuration information of the first transmission frequency band, comprising:

The bandwidth of the first transmission frequency band is L physical resource blocks, the bandwidth of the second transmission frequency band is L+2K+1 physical resource blocks, and the second transmission frequency band is offset by half a physical resource block, where, The L is an integer greater than or equal to 1, and the K is an integer.
The method according to claim 23, wherein the configuration information of the second transmission frequency band comprises:

The offset value of the reference subcarrier index of the second transmission frequency band relative to the reference subcarrier index of the first transmission frequency band.
The method according to any one of claims 23, 24 or 27, wherein the configuration information of the second transmission frequency band is determined according to the configuration information of the first transmission frequency band, comprising:

Determine the reference subcarrier index of the first transmission frequency band according to the bandwidth of the first transmission frequency band;

The offset value of the reference subcarrier index of the second transmission frequency band relative to the reference subcarrier index of the first transmission frequency band is determined according to the reference subcarrier index of the first transmission frequency band.
A data transmission device includes:

The first sending unit is configured to send a channel state information reference signal based on the configuration information;

The first sending unit is further configured to send the configuration information to the second communication node.
A data receiving device includes:

The receiving unit is configured to: the second communication node receives the configuration information sent by the first communication node;

The processing unit is configured to process the channel state information reference signal sent by the first communication node according to the configuration information.
A data transmission device includes:

The second sending unit is configured to: the first communication node sends configuration information of the first transmission frequency band and configuration information of the second transmission frequency band to the second communication node;

The configuration information of the second transmission frequency band is determined according to the configuration information of the first transmission frequency band.
A storage medium, the storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1-29 is implemented.