Wireless communication device and wireless communication method

Abstract

A wireless communication device disclosed herein includes: a plurality of panel antennas; and a control unit that determines panel antennas for communicating with a plurality of transmission / reception points among the plurality of panel antennas. The panel antennas for communicating with the transmission / reception points each communicate with a different transmission / reception point. Each of the plurality of panel antennas includes a plurality of antenna modules. The control unit selects antenna modules to be used for communication among the plurality of antenna modules included in the determined panel antennas.

Description

Wireless communication device and wireless communication method

[0001] The present disclosure relates to a wireless communication device and a wireless communication method.

[0002] For example, Non-Patent Document 1 discloses a wireless communication device connected to an antenna module, as shown in FIG.

[0003] “MIMO elevation toward 6G: Modular massive MIMO in low-frequency bands” IEEE Communications Magazine, pp.52-58, November 2021.

[0004] There is room for further study on a specific configuration for improving the communication quality of a wireless communication system including a wireless communication device connected to a panel antenna.

[0005] Non-limiting examples of the present disclosure contribute to providing a wireless communication device and a wireless communication method that can improve the communication quality of a wireless communication system.

[0006] A wireless communication device according to one aspect of the present disclosure comprises a plurality of panel antennas and a control unit that determines which of the plurality of panel antennas will communicate with a plurality of transmission / reception points, wherein the panel antennas that communicate with the transmission / reception points each communicate with a different transmission / reception point, and each of the plurality of panel antennas comprises a plurality of antenna modules, and the control unit selects an antenna module to be used for communication from the plurality of antenna modules comprised by the determined panel antenna.

[0007] A wireless communication method according to one aspect of the present disclosure is a wireless communication method for a wireless communication device having a plurality of panel antennas, which determines panel antennas from the plurality of panel antennas that will communicate with a plurality of transmission / reception points, each of the panel antennas communicating with the transmission / reception points communicates with a different transmission / reception point, each of the plurality of panel antennas has a plurality of antenna modules, and selects an antenna module to be used for communication from the plurality of antenna modules equipped on the determined panel antennas.

[0008] These comprehensive or specific aspects may be realized as a system, an apparatus, a method, an integrated circuit, a computer program, or a recording medium, or may be realized as any combination of a system, an apparatus, a method, an integrated circuit, a computer program, and a recording medium.

[0009] According to non-limiting examples of the present disclosure, it is possible to provide a wireless communication device and a wireless communication method that can improve the communication quality of a wireless communication system.

[0010] Further advantages and benefits of certain aspects of the present disclosure will become apparent from the specification and drawings. Such advantages and / or benefits may be provided by some of the embodiments and features described in the specification and drawings, respectively, but not necessarily all of them may be provided to obtain one or more identical features.

[0011] 1A, 1B, 1C, 3A, 3B, 3C, 3D, 3D, 3E, 3F, 3G, 3H, 3G ...Figure showing an example of communication different from Figure 5C Figure showing an example of communication between TRP#1 and a terminal Figure showing an example of communication between TRP#2 and a terminal Figure showing an example of communication between TRP#1 and a terminal Figure showing an example of communication between TRP#1 and a terminal Figure showing an example of communication between TRP#1 and a terminal Figure showing an example of communication between TRP#2 and a terminal Figure showing an example of communication between TRP#2 and a terminal Figure showing an example of communication between TRP#2 and a terminal Figure showing an example of arrangement on the time-frequency axis when transmitting DL modulated signals using the SDM method Figure showing an example of arrangement on the time-frequency axis when transmitting DL modulated signals using the SDM method When transmitting DL modulated signals using the SDM method FIG. 1 shows an example of arrangement on the time-frequency axis when transmitting a DL modulated signal using the SDM system.FIG. 1 shows an example of arrangement on the time-frequency axis when transmitting a DL modulated signal using the TDM system.FIG. 1 shows an example of arrangement on the time-frequency axis when transmitting a DL modulated signal using the TDM system.FIG. 1 shows an example of arrangement on the time-frequency axis when transmitting a DL modulated signal using the FDM system.FIG. 1 shows an example of arrangement on the time-frequency axis when transmitting a DL modulated signal using the FDM system.FIG. 1 shows an example of arrangement on the time-frequency axis when transmitting a DL modulated signal using the FDM system.FIG. Figure showing an example of arrangement on the time-frequency axis Figure showing an example of arrangement on the time-frequency axis when transmitting a UL modulated signal using the FDM method Figure showing an example of arrangement on the time-frequency axis when transmitting a UL modulated signal using the FDM method Figure showing an example of arrangement on the time-frequency axis when transmitting a UL modulated signal using the FDM method Figure showing an example of RS configuration Figure showing an example of RS configuration different from Figure 9A1 Figure showing an example of RS configuration different from Figure 9A1 and Figure 9A2 Figure showing an example of RS configuration different from Figure 9B1 Figure showing an example of RS configuration different from Figure 9B1 and Figure 9B2 Terminal,Diagram showing an example of communication between TRP#1 and TRP#2. Diagram showing an example of communication between a terminal, TRP#1 and TRP#2. Diagram showing an example of communication between a terminal, TRP#1 and TRP#2. Diagram showing an example of communication between a terminal, TRP#1 and TRP#2. Diagram showing an example of communication between a terminal, TRP#1 and TRP#2. Diagram showing RS exchange. Diagram showing RS exchange. Diagram showing an example of communication between TRP#1 and a terminal. Diagram showing an example of communication between TRP#1 and a terminal. Diagram showing an example of communication between TRP#1 and a terminal. Diagram showing an example of communication between TRP#2 and a terminal. 5B is a diagram showing an example of a configuration of a receiving panel antenna based on an antenna module equipped in the terminal in FIG. 12B. 5C and 5D are diagrams showing an example of a configuration of a receiving panel antenna based on an antenna module equipped in the terminal in FIG. 12B. 14A, 14B, 14C. FIG. 14A shows a modified example of the "relationship between the transmitting / transmitting / receiving panel antenna and the antenna module based on the antenna module." FIG. 14B shows a modified example of the "relationship between the receiving / transmitting / receiving panel antenna and the antenna module based on the antenna module." FIG. 14C shows a modified example of the "relationship between the transmitting / transmitting / receiving panel antenna and the antenna port based on the antenna module." FIG. 14D shows a modified example of the "relationship between the receiving / transmitting / receiving panel antenna and the antenna port based on the antenna module." FIG. 10A shows an example of the configuration of the terminal in FIG. 5A, FIG. 5B, FIG. 5C, FIG. 5D, FIG. 10A, FIG. 10B, FIG. 10C1, FIG. 10C2. TRP#1 in FIG. 5A, FIG. 5B, FIG. 5C, FIG. 5D, FIG. 10A, FIG. 10B, FIG. 10C1, FIG. 10C2.Figure showing an example of the configuration of TRP #2 Figure showing an example of the configuration of terminal capability information Figure showing an example of the configuration of "Capability information regarding transmission method when Multiple-TRP" Figure showing an example of the configuration of "Capability information regarding transmission method when Multiple-TRP" different from Figure 19B1 Figure showing an example of the configuration of "Capability information regarding reception method when Multiple-TRP" Figure showing an example of the configuration of "Capability information regarding transmission method when Multiple-TRP" different from Figure 19C1 Figure showing an example of the configuration of parts related to the data generation unit of the terminal Figure showing an example of the configuration on the time axis of the modulated signal transmitted by the terminal Figure showing an example of the configuration of the control signal generation unit provided in a TRP having the configurations of Figures 1A, 1B, 1C, and 18 Figure showing an example of the configuration of the data generation unit provided in a TRP having the configurations of Figures 1A, 1B, 1C, and 18 Figure showing an example of the configuration on the time axis of the modulated signal transmitted by the TRP Figure showing an example of the configuration of the control information symbol Information obtained from the terminal 23A and 23B; FIG. 23B is a diagram showing an example of a panel antenna based on the antenna module; FIG. 23A is a diagram showing an example of a panel antenna based on the antenna module; FIG. 23B is a diagram showing an example of a communication between TRP#1 and a terminal; FIG. 23B is a diagram showing an example of a communication between TRP#2 and a terminal; FIG. 23A is a diagram showing an example of a communication between TRP#1 and a terminal; FIG. 23B is a diagram showing an example of a communication between TRP#1 and a terminal; FIG. 23B is a diagram showing an example of a communication between TRP#2 and a terminal; FIG. 23B is a diagram showing an example of a communication between TRP#1 and a terminal; FIG. 23B is a diagram showing an example of a communication between TRP#2 and a terminal; FIG. 23B is a diagram showing an example of a communication between TRP#1 and a terminal;

[0012] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings.

[0013] (First Embodiment) In the first embodiment, a wireless communication system and device will be described.

[0014] 1A shows an example of the configuration of a communication device such as a terminal, a repeater, or a UE (User Equipment) in the present embodiment 1. Note that the communication device in FIG. 1A may be, for example, a base station, an access point, or a gNB (g Node B).

[0015] 1A includes N transmission units, "first transmission unit 102_1 to N-th transmission unit 102_N." Note that N is an integer equal to or greater than 1 or an integer equal to or greater than 2.

[0016] 1A is also assumed to include M transmitting panel antennas based on antenna modules for transmission, "transmitting panel antenna 1 based on antenna module 106_1 to transmitting panel antenna M based on antenna module 106_M," where M is an integer equal to or greater than 1 or an integer equal to or greater than 2.

[0017] 1A includes n receiving units, "first receiving unit 155_1 to n-th receiving unit 155_n," where n is an integer equal to or greater than 1 or an integer equal to or greater than 2.

[0018] 1A includes m receiving panel antennas based on antenna modules for reception, "receiving panel antenna 1 based on antenna module 151_1 to receiving panel antenna m based on antenna module 151_m," where m is an integer equal to or greater than 1 or an integer equal to or greater than 2.

[0019] The ith transmitter 102_i receives the control signal 100 and the ith data 101_i as input, performs processing such as error correction coding and mapping using a modulation method, and outputs the ith modulated signal 103_i. Note that i is an integer greater than or equal to 1 and less than or equal to N. Also, N is an integer greater than or equal to 1 or an integer greater than or equal to 2. The ith modulated signal 103_i may be composed of one signal or multiple signals. Therefore, the ith modulated signal 103_i may include one modulated signal or multiple modulated signals.

[0020] The i-th data 101_i may include data to be transmitted to one or more communication partners, and an error correction code, a modulation method, and a transmission method may be set for each of the data.

[0021] The first processing unit 104 receives the ith modulated signal 103_i (i is an integer greater than or equal to 1 and less than or equal to N), the control signal 100, and the reference signal (and / or a signal including control information) 199 as input, and outputs the jth transmission signal 105_j (j is an integer greater than or equal to 1 and less than or equal to M) based on the frame configuration information included in the control signal 100. Note that the ith modulated signal 103_i may contain no signal, and the jth transmission signal 105_j may contain no signal. The jth transmission signal 105_j may be composed of one signal or multiple signals. Therefore, the jth transmission signal 105_j may contain one transmission signal or multiple transmission signals.

[0022] The j-th transmission signal 105_j is output as a radio wave from a transmission panel antenna j based on an antenna module 106_j. Note that the transmission panel antenna j based on the antenna module 106_j may receive a control signal 100 as an input, perform beamforming, and change the transmission directivity. Furthermore, the control signal 100 may be used to switch the transmission panel antenna j based on the antenna module 106_j when transmitting a modulated signal to a communication partner.

[0023] The i-th reception signal 152_i is received by a reception panel antenna i based on the antenna module 151_i. Note that the reception panel antenna i based on the antenna module 151_i may receive the control signal 100, perform beamforming, and change the reception directivity.

[0024] The second processing unit 153 receives the ith received signal 152_i and the control signal 100 as input, performs processing such as frequency conversion, and outputs the jth signal-processed signal 154_j. Note that the ith received signal 152_i may contain no signal, and the jth signal-processed signal 154_j may contain no signal. The ith received signal 152_i may contain one signal or multiple signals. Therefore, the ith received signal 152_i may contain one received signal or multiple received signals.

[0025] The j-th signal processed signal 154_j may include one signal or may include multiple signals.

[0026] The jth receiving unit 155_j receives the jth signal processed signal 154_j and the control signal 100 as input, and performs processing such as demodulation and error correction decoding on the jth signal processed signal 154_j based on the control signal 100, and outputs the jth control data 156_j and the jth data 157_j.

[0027] The j-th control data 156_j may include control data from one or more communication partners. The j-th data 157_j may include data from one or more communication partners.

[0028] The third processing unit 158 ​​receives the j-th control data 156_j as input, generates the control signal 100 based on information obtained from the communication partner, and outputs it.

[0029] 1A may perform processing for transmit beamforming (transmit directivity control), such as precoding. Furthermore, the second processing unit 153 may perform processing for receive directivity control. As another example, the first processing unit 104 may process the first transmission signal 105_1 as the first modulated signal 103_1, the second transmission signal 105_2 as the second modulated signal 103_2, and the third transmission signal 105_3 as the third modulated signal 103_3, and output the signals. Alternatively, the first processing unit 104 may process the first transmission signal 105_1 as the second modulated signal 103_2, and output the signals. The second processing unit 153 may also perform processing such that the signal 154_1 after the first signal processing is output as the first received signal 152_1, the signal 154_2 after the second signal processing is output as the second received signal 152_2, and the signal 154_3 after the third signal processing is output as the third received signal 152_3. Alternatively, the second processing unit 153 may perform processing such that the signal 154_2 after the second signal processing is output as the first received signal 152_1.

[0030] 1A may be configured to include additional processing units not shown in FIG. 1A. For example, the communication device may include an interleaver for rearranging symbols and / or data, a padding unit for padding, and the like. Furthermore, the communication device of FIG. 1A (and FIGS. 1B and 1C) may perform transmission and / or reception corresponding to MIMO (Multiple Input Multiple Output) transmission (MIMO technology) in which multiple modulated signals (multiple streams) are transmitted using multiple antennas. Furthermore, the communication device of FIG. 1A (and FIGS. 1B and 1C) may perform transmission corresponding to multi-user MIMO transmission (multi-user MIMO technology) in which modulated signals are transmitted to multiple communication devices (transmitting / receiving devices, TRPs (TX (Transmitter) / RX (Receiver) points) (Tx (Transmission) / Rx (Reception) points)) during at least a first time interval using a first frequency (band), or transmission to multiple TRPs. Furthermore, the communication device of FIG. 1A (and FIGS. 1B and 1C) may receive multiple TRPs, using a first frequency (band), to receive modulated signals transmitted by multiple communication devices (transmitting / receiving devices, TRPs (TX (Transmitter) / RX (Receiver) points) (Tx (Transmission) / Rx (Reception) points)) at least during a first time period.

[0031] The transmitting antenna, "a transmitting panel antenna based on any one of the antenna modules of transmitting panel antenna 1 based on antenna module 106_1 to transmitting panel antenna M based on antenna module 106_M," and the receiving antenna, "a receiving panel antenna based on any one of the antenna modules of receiving panel antenna 1 based on antenna module 151_1 to receiving panel antenna m based on antenna module 151_m," may be shared, and configured as a "transmitting and receiving panel antenna based on an antenna module" or a "transmitting and receiving antenna." In this case, there may be one or more "transmitting and receiving panel antennas based on antenna modules" or "transmitting and receiving antennas."

[0032] Furthermore, when M = m holds, the "transmitting panel antenna i based on the antenna module 106_i" and the "receiving panel antenna i based on the antenna module 151_i" may be shared, and configured as a "transmitting and receiving panel antenna i based on the antenna module" and a "transmitting and receiving antenna i," where i is an integer between 1 and M (or m) inclusive.

[0033] 1B is an example of a configuration of a communication device, such as a terminal, a repeater, or a UE, in the first embodiment, which is different from that of FIG. 1A. The communication device in FIG. 1B may be, for example, a base station, an access point, or a gNB. In FIG. 1B, components that operate in the same manner as those in FIG. 1A are assigned the same numbers, and detailed description thereof will be omitted.

[0034] 1B is characterized in that the number of transmitters is the same as the number of transmitting panel antennas based on the antenna module. In this case, the first processing unit 104 may perform processing for transmit beamforming (transmit directivity control), such as precoding. The first processing unit 104 may also convert the xth transmit signal 105_x into the yth modulated signal 103_y and output it. Note that x is an integer greater than or equal to 1 and less than or equal to M, and y is an integer greater than or equal to 1 and less than or equal to M.

[0035] The number of receiving units is assumed to be the same as the number of receiving panel antennas based on the antenna module. In this case, the second processing unit 153 may perform processing for receiving directivity control. The second processing unit 153 may also output the xth signal processed signal 154_x as the yth received signal 152_y. Note that x is an integer greater than or equal to 1 and less than or equal to m, and y is an integer greater than or equal to 1 and less than or equal to m.

[0036] The transmitting antenna, "a transmitting panel antenna based on any one of the antenna modules of transmitting panel antenna 1 based on antenna module 106_1 to transmitting panel antenna M based on antenna module 106_M," and the receiving antenna, "a receiving panel antenna based on any one of the antenna modules of receiving panel antenna 1 based on antenna module 151_1 to receiving panel antenna m based on antenna module 151_m," may be shared, and configured as a "transmitting and receiving panel antenna based on an antenna module" or a "transmitting and receiving antenna." In this case, there may be one or more "transmitting and receiving panel antennas based on antenna modules" or "transmitting and receiving antennas."

[0037] Furthermore, when M = m holds, the "transmitting panel antenna i based on the antenna module 106_i" and the "receiving panel antenna i based on the antenna module 151_i" may be shared, and configured as a "transmitting and receiving panel antenna i based on the antenna module" and a "transmitting and receiving antenna i," where i is an integer between 1 and M (or m) inclusive.

[0038] 1C is an example of a configuration of a communication device, such as a terminal, a repeater, or a UE, in the first embodiment, which is different from that of FIGS. 1A and 1B. The communication device in FIG. 1C may be, for example, a base station, an access point, or a gNB. In FIG. 1C, components that operate in the same manner as those in FIG. 1A are assigned the same numbers, and detailed description thereof will be omitted.

[0039] 1C is characterized in that the number of transmitters is the same as the number of transmitting panel antennas based on the antenna module, and there is no first processing unit, and the number of receivers is the same as the number of receiving panel antennas based on the antenna module, and there is no second processing unit.

[0040] 1A, 1B, and 1C are examples of the configuration of a communication device, but the method of configuring the communication device is not limited to this example.

[0041] The transmitting antenna, "a transmitting panel antenna based on any one of the antenna modules of transmitting panel antenna 1 based on antenna module 106_1 to transmitting panel antenna M based on antenna module 106_M," and the receiving antenna, "a receiving panel antenna based on any one of the antenna modules of receiving panel antenna 1 based on antenna module 151_1 to receiving panel antenna m based on antenna module 151_m," may be shared, and configured as a "transmitting and receiving panel antenna based on an antenna module" or a "transmitting and receiving antenna." In this case, there may be one or more "transmitting and receiving panel antennas based on antenna modules" or "transmitting and receiving antennas."

[0042] Furthermore, when M = m holds, the "transmitting panel antenna i based on the antenna module 106_i" and the "receiving panel antenna i based on the antenna module 151_i" may be shared, and configured as a "transmitting and receiving panel antenna i based on the antenna module" and a "transmitting and receiving antenna i," where i is an integer between 1 and M (or m) inclusive.

[0043] 2 shows an example of the configuration of the i-th transmitter 102_i, where i is an integer greater than or equal to 1 and less than or equal to N, or an integer greater than or equal to 1 and less than or equal to M.

[0044] Data symbol generation section 202 receives data 201 and control signal 200 as input, and performs error correction coding, mapping, signal processing for transmission, etc. based on information such as error correction coding method information, modulation method information, transmission method information, and frame configuration method included in control signal 200, and outputs data symbol modulated signal 203. Note that data 201 corresponds to the ith data 101_i, and control signal 200 corresponds to control signal 100.

[0045] The other signal generating unit 204 receives the control signal 200 as an input, generates the other signal 205 based on the control signal, and outputs it.

[0046] Processing unit 251 receives modulated signal 203 of a data symbol, other signals 205, and control signal 200 as input, and generates and outputs modulated signal 252 according to the frame configuration based on the frame configuration information included in control signal 200. Note that modulated signal 252 according to the frame configuration corresponds to i-th modulated signal 103_i.

[0047] 3A shows an example of the configuration of a transmitting panel antenna i based on the antenna module 106_i in FIGS. 1A, 1B, and 1C, where i is an integer greater than or equal to 1 and less than or equal to M.

[0048] The transmitting panel antenna i based on the antenna module 106_i is assumed to include "antenna module i_1 of 304_i_1, antenna module i_2 of 304_i_2, ..., antenna module i_Pi of 304_i_Pi." Note that Pi is an integer equal to or greater than 1, or an integer equal to or greater than 2. Therefore, the transmitting panel antenna i based on the antenna module 106_i is assumed to include Pi antenna modules.

[0049] The selector 302 — i receives the transmission signal 301 — i and the control signal 300 as input, and selects an antenna module for transmitting the transmission signal 301 — i based on the control signal 300 .

[0050] For example, if the selection unit 302_i decides to transmit the transmission signal 301_i using r antenna modules, the selection unit 302_i transmits the transmission signal 301_i using r antenna modules from among "antenna module i_1 of 304_i_1, antenna module i_2 of 304_i_2, ..., antenna module i_Pi of 304_i_Pi."

[0051] In addition, there may be cases where no signal exists as the transmission signal 301_i. In this case, the transmission panel antenna i based on the antenna module 106_i does not transmit a signal.

[0052] 1A and 1B” or “the i-th modulated signal 103_i in FIG. 1C.” Also, the control signal 300 corresponds to the control signal 100.

[0053] For example, when the selection unit 302_i determines to transmit the transmission signal 301_i using one antenna module, for example, the antenna module i_1 of 304_i_1, based on the control signal 300, the selection unit 302_i outputs the signal 303_i_1 as a signal corresponding to the transmission signal 301_i, and the signal 303_i_1 corresponding to the transmission signal 301_i is transmitted as a radio wave from the antenna module i_1 of 304_i_1. Therefore, in this example, the transmission signal 301_i is transmitted using one antenna module.

[0054] As another example, if the selection unit 302_i determines based on the control signal 300 to transmit the transmission signal 301_i using two antenna modules, for example, antenna module i_1 of 304_i_1 and antenna module i_2 of 304_i_2, the selection unit 302_i outputs signals 303_i_1 and 303_i_2 as signals corresponding to the transmission signal 301_i. The signal 303_i_1 corresponding to the transmission signal 301_i is transmitted as a radio wave from the antenna module i_1 of 304_i_1, and the signal 303_i_2 corresponding to the transmission signal 301_i is transmitted as a radio wave from the antenna module i_1 of 304_i_2. In this example, the transmission signal 301_i is transmitted using two antenna modules, but the transmission signal 301_i may also be transmitted using three or more antenna modules. Therefore, the transmission signal 301_i may also be transmitted using multiple antenna modules.

[0055] A few more examples will be given and explained.

[0056] Example: Assume that the transmission signal 301_i is composed of one signal, for example, signal #1. In this case, if the selection unit 302_i determines, based on the control signal 300, to transmit the transmission signal 301_i composed of signal #1 using one antenna module, for example, antenna module i_1 of 304_i_1, the selection unit 302_i outputs signal 303_i_1 as a signal equivalent to the transmission signal 301_i composed of signal #1, and the signal 303_i_1 equivalent to the transmission signal 301_i composed of signal #1 is transmitted as a radio wave from antenna module i_1 of 304_i_1. Therefore, in this example, the transmission signal 301_i composed of signal #1 is transmitted using one antenna module.

[0057] The transmission signal 301_i made up of the signal #1 may be transmitted as radio waves from a transmission panel antenna based on a plurality of antenna modules.

[0058] Example: Assume that transmission signal 301_i is composed of one signal, for example, signal #1. In this case, if selection unit 302_i determines, based on control signal 300, to transmit transmission signal 301_i composed of signal #1 using two antenna modules, for example, antenna module i_1 of 304_i_1 and antenna module i_2 of 304_i_2, selection unit 302_i outputs signal 303_i_1 and signal 303_i_2 as signals corresponding to transmission signal 301_i composed of signal #1, and signal 303_i_1 corresponding to transmission signal 301_i composed of signal #1 is transmitted as radio waves from antenna module i_1 of 304_i_1, and signal 303_i_2 corresponding to transmission signal 301_i composed of signal #1 is transmitted as radio waves from antenna module i_1 of 304_i_2. In this example, the transmission signal 301_i consisting of the signal #1 is transmitted using two antenna modules, but the transmission signal 301_i consisting of the signal #1 may be transmitted using three or more antenna modules, and therefore the transmission signal 301_i consisting of the signal #1 may be transmitted using multiple antenna modules.

[0059] The transmission signal 301_i made up of the signal #1 may be transmitted as radio waves from a transmission panel antenna based on a plurality of antenna modules.

[0060] Next, an example in which the transmission signal 301_i is composed of a plurality of signals will be described. In the following, a case in which the transmission signal 301_i is composed of two signals, for example, signal #1 and signal #2, will be described.

[0061] Example: Assume that transmission signal 301_i is composed of two signals, for example, "signal #1 and signal #2." In this case, if selection unit 302_i determines, based on control signal 300, to transmit transmission signal 301_i composed of "signal #1 and signal #2" using one antenna module, for example, antenna module i_1 of 304_i_1, selection unit 302_i outputs signal 303_i_1 as a signal equivalent to transmission signal 301_i composed of "signal #1 and signal #2." Signal 303_i_1 equivalent to transmission signal 301_i composed of "signal #1 and signal #2" is transmitted as radio waves from antenna module i_1 of 304_i_1. Therefore, in this example, transmission signal 301_i composed of "signal #1 and signal #2" is transmitted using one antenna module. For example, signals #1 and #2 may be transmitted using a method such as spatial division multiplexing (SDM) (e.g., fully overlapping, partially overlapping, etc.), time division multiplexing (TDM) (e.g., tdmScheme, non-overlapping, etc.), or frequency division multiplexing (FDM) (e.g., fdmScheme, non-overlapping, etc.).

[0062] Signal #1 may be transmitted as radio waves from a transmitting panel antenna based on multiple antenna modules, and signal #2 may be transmitted as radio waves from a transmitting panel antenna based on multiple antenna modules.

[0063] Although this example describes an example in which the transmission signal 301_i is composed of two signals, the same implementation is also possible when the transmission signal 301_i is composed of two or more signals. The two or more signals that make up the transmission signal 301_i are transmitted using a method such as a space division multiplexing (SDM) method (e.g., fully overlapping, partially overlapping, etc.), a time division multiplexing (TDM) method (e.g., tdmScheme, non-overlapping, etc.), or a frequency division multiplexing (FDM) method (e.g., fdmScheme, non-overlapping, etc.).

[0064] Example: It is assumed that the transmission signal 301_i is composed of two signals, for example, "signal #1 and signal #2." At this time, if the selection unit 302_i decides based on the control signal 300 to transmit the transmission signal 301_i composed of "signal #1, signal #2" using two antenna modules, for example, antenna module i_1 of 304_i_1 and antenna module i_2 of 304_i_2, the selection unit 302_i outputs signals 303_i_1 and 303_i_2 as signals equivalent to the transmission signal 301_i composed of "signal #1, signal #2", and the signal 303_i_1 equivalent to the transmission signal 301_i composed of "signal #1, signal #2" is transmitted as radio waves from the antenna module i_1 of 304_i_1, and the signal 303_i_2 equivalent to the transmission signal 301_i composed of "signal #1, signal #2" is transmitted as radio waves from the antenna module i_1 of 304_i_2. In this example, the transmission signal 301_i consisting of "signal #1 and signal #2" is transmitted using two antenna modules, but the transmission signal 301_i consisting of "signal #1 and signal #2" may be transmitted using three or more antenna modules. Therefore, the transmission signal 301_i consisting of "signal #1 and signal #2" may be transmitted using multiple antenna modules. Furthermore, for example, the signals #1 and #2 are transmitted using a method such as a space division multiplexing (SDM) method (e.g., fully overlapping, partially overlapping, etc.), a time division multiplexing (TDM) method (e.g., tdmScheme, non-overlapping, etc.), or a frequency division multiplexing (FDM) method (e.g., fdmScheme, non-overlapping, etc.).

[0065] Signal #1 may be transmitted as radio waves from a transmitting panel antenna based on multiple antenna modules, and signal #2 may be transmitted as radio waves from a transmitting panel antenna based on multiple antenna modules.

[0066] Although this example describes an example in which the transmission signal 301_i is composed of two signals, the same implementation is also possible when the transmission signal 301_i is composed of two or more signals. The two or more signals that make up the transmission signal 301_i are transmitted using a method such as a space division multiplexing (SDM) method (e.g., fully overlapping, partially overlapping, etc.), a time division multiplexing (TDM) method (e.g., tdmScheme, non-overlapping, etc.), or a frequency division multiplexing (FDM) method (e.g., fdmScheme, non-overlapping, etc.).

[0067] Example: Assume that the transmission signal 301_i is composed of two signals, for example, "signal #1 and signal #2." In this case, if the selection unit 302_i determines, based on the control signal 300, to transmit the transmission signal 301_i composed of "signal #1 and signal #2" using two antenna modules, for example, antenna module i_1 of 304_i_1 and antenna module i_2 of 304_i_2, the selection unit 302_i outputs signal 303_i_1 as a signal corresponding to "signal #1." In addition, the selection unit 302_i outputs signal 303_i_2 as a signal corresponding to "signal #2." Then, signal 303_i_1 corresponding to "signal #1" is transmitted as a radio wave from antenna module i_1 of 304_i_1, and signal 303_i_2 corresponding to "signal #2" is transmitted as a radio wave from antenna module i_1 of 304_i_2.

[0068] In this example, "signal #1" is transmitted using one antenna module, but "signal #1" may be transmitted using two or more antenna modules. Also, "signal #2" is transmitted using one antenna module, but "signal #2" may be transmitted using two or more antenna modules.

[0069] Thus, "signal #1" may be transmitted using one or more antenna modules, and "signal #2" may be transmitted using one or more antenna modules.

[0070] When the transmission signal 301_i is composed of two or more signals, there may be an antenna module that transmits a plurality of the two or more signals. When the transmission signal 301_i is composed of two or more signals, there may be an antenna module that transmits one of the two or more signals.

[0071] For example, signals #1 and #2 may be transmitted using a method such as spatial division multiplexing (SDM) (e.g., fully overlapping, partially overlapping, etc.), time division multiplexing (TDM) (e.g., tdmScheme, non-overlapping, etc.), or frequency division multiplexing (FDM) (e.g., fdmScheme, non-overlapping, etc.).

[0072] Signal #1 may be transmitted as radio waves from a transmitting panel antenna based on multiple antenna modules, and signal #2 may be transmitted as radio waves from a transmitting panel antenna based on multiple antenna modules.

[0073] Although this example describes an example in which the transmission signal 301_i is composed of two signals, the same implementation is also possible when the transmission signal 301_i is composed of two or more signals. The two or more signals that make up the transmission signal 301_i are transmitted using a method such as a space division multiplexing (SDM) method (e.g., fully overlapping, partially overlapping, etc.), a time division multiplexing (TDM) method (e.g., tdmScheme, non-overlapping, etc.), or a frequency division multiplexing (FDM) method (e.g., fdmScheme, non-overlapping, etc.).

[0074] 3A, antenna module i_k of 304_i_k (k is an integer between 1 and Pi) may receive control signal 300 as input, change the characteristics of the antenna itself, control directivity, or change the configuration, shape, etc. of the antenna module. Note that antenna module i_k of 304_i_k does not necessarily receive control signal 300 as input.

[0075] 3B shows an example of a configuration of a transmitting panel antenna i based on the antenna module 106_i in FIGS. 1A, 1B, and 1C, which is different from that shown in FIG. 3A, where i is an integer greater than or equal to 1 and less than or equal to M.

[0076] The transmitting panel antenna i based on the antenna module 106_i includes the “antenna module i_1 of 304_i_1.” For example, the “antenna module i_1 of 304_i_1” receives the transmission signal 301_i and the control signal 300 as input, and transmits the transmission signal 301_i based on the control signal 300.

[0077] In addition, there may be cases where no signal exists as the transmission signal 301_i. In this case, the transmission panel antenna i based on the antenna module 106_i does not transmit a signal.

[0078] 3B corresponds to the "i-th transmission signal 105_i in FIGS. 1A and 1B" or the "i-th modulated signal 103_i in FIG. 1C."

[0079] Further explanation will be given with some examples. Example: Assume that the transmission signal 301_i is composed of one signal, for example, signal #1. In this case, "antenna module i_1 of 304_i_1" transmits the transmission signal 301_i composed of signal #1 as a radio wave. Note that signal #1 may also be transmitted as a radio wave from a transmission panel antenna based on multiple antenna modules.

[0080] Example: Assume that transmission signal 301_i is composed of two signals, for example, "signal #1 and signal #2." In this case, "antenna module i_1 of 304_i_1" transmits transmission signal 301_i composed of "signal #1 and signal #2" as radio waves. Note that, for example, signals #1 and #2 are transmitted using a method such as space division multiplexing (SDM) (e.g., fully overlapping, partially overlapping, etc.), time division multiplexing (TDM) (e.g., tdmScheme, non-overlapping, etc.), or frequency division multiplexing (FDM) (e.g., fdmScheme, non-overlapping, etc.).

[0081] Signal #1 may be transmitted as radio waves from a transmitting panel antenna based on multiple antenna modules, and signal #2 may be transmitted as radio waves from a transmitting panel antenna based on multiple antenna modules.

[0082] Although this example describes an example in which the transmission signal 301_i is composed of two signals, the same implementation is also possible when the transmission signal 301_i is composed of two or more signals. The two or more signals that make up the transmission signal 301_i are transmitted using a method such as a space division multiplexing (SDM) method (e.g., fully overlapping, partially overlapping, etc.), a time division multiplexing (TDM) method (e.g., tdmScheme, non-overlapping, etc.), or a frequency division multiplexing (FDM) method (e.g., fdmScheme, non-overlapping, etc.).

[0083] For example, the transmission signal 301_i is composed of two signals, for example, "signal #1 and signal #2." In this case, the "antenna module i_1 of 304_i_1" transmits "signal #1" as a radio wave.

[0084] Incidentally, "signal #2" will be transmitted by another "transmitting panel antenna based on an antenna module."

[0085] For example, signals #1 and #2 may be transmitted using a method such as spatial division multiplexing (SDM) (e.g., fully overlapping, partially overlapping, etc.), time division multiplexing (TDM) (e.g., tdmScheme, non-overlapping, etc.), or frequency division multiplexing (FDM) (e.g., fdmScheme, non-overlapping, etc.).

[0086] In this example, an example in which the transmission signal 301_i is composed of two signals is described, but the same implementation is also possible in the case in which the transmission signal 301_i is composed of two or more signals.

[0087] For example, when transmission signal 301_i is composed of A signals (A is an integer equal to or greater than 2), antenna module i_1 of 304_i_1 transmits less than A of the A signals. Two or more signals constituting transmission signal 301_i are transmitted using a method such as space division multiplexing (SDM) (e.g., fully overlapping, partially overlapping, etc.), time division multiplexing (TDM) (e.g., tdmScheme, non-overlapping, etc.), frequency division multiplexing (FDM) (e.g., fdmScheme, non-overlapping, etc.).

[0088] 3B may receive the control signal 300 to change the characteristics of the antenna itself, perform directivity control, or change the configuration, shape, etc. of the antenna module. Note that the control signal 300 does not necessarily have to be received by the antenna module i_1 of 304_i_1.

[0089] In this embodiment and in this specification, examples are described using the term antenna module, but the antenna module can be called by a different term (e.g., antenna, antenna group, antenna unit, antenna array, antenna port, etc., but is not limited to these examples) and implemented in the same way.

[0090] A transmitting panel antenna i based on antenna module 106_i in Figures 1A, 1B and 1C may include one or more antenna modules, or two or more antenna modules, as shown in Figures 3A and 3B.

[0091] When a transmitting panel antenna i based on the antenna module 106_i includes two or more antenna modules, the antenna shapes of the two or more antenna modules may be different or the same, and the number of antennas constituting each of the two or more antenna modules may be the same or different.

[0092] 4A shows an example of the configuration of a receiving panel antenna i based on the antenna module 151_i in FIGS. 1A, 1B, and 1C, where i is an integer greater than or equal to 1 and less than or equal to m.

[0093] A receiving panel antenna i based on antenna module 151_i is assumed to include "antenna module i_1 of 401_i_1, antenna module i_2 of 401_i_2, ..., antenna module i_Qi of 401_i_Qi." Note that Qi is an integer equal to or greater than 1, or an integer equal to or greater than 2. Therefore, a receiving panel antenna i based on antenna module 151_i is assumed to include Qi antenna modules.

[0094] Antenna module i_k (k is an integer between 1 and Qi) of 401_i_k receives control signal 400 as an input, and controls whether or not to operate as an antenna based on control signal 400.

[0095] When antenna module i_k of 401_i_k operates as an antenna, it outputs received signal k of 402_i_k. Processing unit 403_i receives received signal k of 402_i_k and control signal 400 as input, processes received signal k of 402_i_k (e.g., selects, combines, etc.) based on control signal 400, and outputs the ith received signal 404_i.

[0096] There may be cases where no signal exists as the i-th received signal 404_i.

[0097] 4A corresponds to the "i-th received signal 152_i in FIGS. 1A, 1B, and 1C."

[0098] In a receiving panel antenna i based on antenna module 151_i in Figure 4A, when it operates as an antenna, one or more antenna modules among "antenna module i_1 of 401_i_1, antenna module i_2 of 401_i_2, ..., antenna module i_Qi of 401_i_Qi" will operate.

[0099] When antenna module i_k of 401_i_k operates as an antenna, it outputs received signal k of 402_i_k, and at this time, received signal k of 402_i_k is composed of one or more signals.

[0100] 4B shows an example of the configuration of a receiving panel antenna i based on the antenna module 151_i in FIGS. 1A, 1B, and 1C, which is different from that shown in FIG. 4A, where i is an integer greater than or equal to 1 and less than or equal to m.

[0101] The receiving panel antenna i based on the antenna module 151_i is assumed to include the antenna module i_1 of 401_i_1. Therefore, the receiving panel antenna i based on the antenna module 151_i includes one antenna module.

[0102] The antenna module i_1 of 401_i_1 receives the control signal 400 as an input, and controls whether or not to operate as an antenna based on the control signal 400.

[0103] When the antenna module i_1 of 401_i_1 operates as an antenna, it outputs the i-th received signal 404_i.

[0104] There may be cases where no signal exists as the i-th received signal 404_i.

[0105] 4A corresponds to the "i-th received signal 152_i in FIGS. 1A, 1B, and 1C."

[0106] In FIG. 4B, when antenna module i_1 of 401_i_1 operates as an antenna, it outputs the i-th received signal 404_i, which is composed of one or more signals.

[0107] 1A, 1B, and 1C, for example, downlink multi(multiple)-TRP, uplink multi(multiple)-TRP, and STxMP (simultaneous transmission across multiple panels) will be described. (In uplink (or downlink) multi(multiple)-TRP, when a device transmits a modulated signal using multiple panel antennas, it may be called STxMP.)

[0108] 5A shows an example of communication between "terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" and "TRP#1 of 501_1 and TRP#2 of 501_2." In FIG. 5A, components that operate in the same manner as in FIGS. 1A, 1B, and 1C are assigned the same numbers. Note that "TRP#1 of 501_1 and TRP#2 of 501_2" are referred to as TRPs, but they may also be base stations. Therefore, for example, TRP#1 of 501_1 may be base station #1, and TRP#2 of 501_2 may be base station #2. In the following description, they will be referred to as TRPs.

[0109] The terminal 502 having the configurations of FIGS. 1A, 1B, and 1C transmits one or more modulated signals (one or more transmit signals) to TRP #1 of 501_1 using a transmit panel antenna 1 based on the antenna module 106_1. The terminal 502 having the configurations of FIGS. 1A, 1B, and 1C transmits one or more modulated signals (one or more transmit signals) to TRP #2 of 501_2 using a transmit panel antenna 2 based on the antenna module 106_2. The method by which the terminal 502 having the configurations of FIGS. 1A, 1B, and 1C transmits one or more modulated signals (one or more transmit signals) has already been described, so further description is omitted. Therefore, a destination TRP is set for each transmit panel antenna based on an antenna module. Typically, one destination TRP is set for each transmit panel antenna based on an antenna module. However, two or more destination TRPs may be set for each transmit panel antenna based on an antenna module.

[0110] 5A, "one or more modulated signals (one or more transmission signals) are transmitted to TRP #1 of 501_1 using transmitting panel antenna 1 based on antenna module 106_1," but it may also be "one or more modulated signals (one or more transmission signals) are transmitted to TRP #1 of 501_1 using transmitting panel antenna 1 based on antenna module 106_1 and transmitting panel antenna 3 based on antenna module 106_3." In other words, one or more modulated signals (one or more transmission signals) may be transmitted to TRP #1 of 501_1 (or TRP #2 of 501_2) using transmitting panel antennas based on multiple antenna modules.

[0111] In Figure 5A, "terminal 502 having the configuration of Figures 1A, 1B, and 1C" transmits modulated signals (transmission signals) to two TRPs, but the same can be implemented when "terminal 502 having the configuration of Figures 1A, 1B, and 1C" transmits modulated signals (transmission signals) to two or more TRPs.

[0112] As shown in Figure 5A, the terminal 502 can improve data transmission efficiency by transmitting a modulated signal to the TRP for each transmitting panel antenna based on the antenna module, and by using the antenna module, the effect of improving the data reception quality at the TRP can be obtained.

[0113] 5B shows a different example from that shown in FIG. 5A of communication between "terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" and "TRP #1 of 501_1 and TRP #2 of 501_2." In FIG. 5B, components that operate in the same manner as in FIGS. 1A, 1B, and 1C are assigned the same numbers. Note that "TRP #1 of 501_1 and TRP #2 of 501_2" are referred to as TRPs, but they may also be base stations. Therefore, for example, TRP #1 of 501_1 may be base station #1, and TRP #2 of 501_2 may be base station #2. In the following description, they will be referred to as TRPs.

[0114] The "terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" receives one or more modulated signals (one or more transmit signals) transmitted by TRP #1 of 501_1 using a receiving panel antenna 1 based on the antenna module 151_1. The "terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" receives one or more modulated signals (one or more transmit signals) transmitted by TRP #2 of 501_2 using a receiving panel antenna 3 based on the antenna module 151_3. The method by which the "terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" receives one or more modulated signals (one or more transmit signals) has already been explained, so further explanation is omitted. Therefore, the "terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" sets a TRP to communicate with for each receiving panel antenna based on an antenna module. In the main configuration, the "terminal 502 having the configurations of Figures 1A, 1B, and 1C" sets one TRP as a communication partner for each receiving panel antenna based on an antenna module. However, the "terminal 502 having the configurations of Figures 1A, 1B, and 1C" may be able to set two or more TRPs as communication partners for each receiving panel antenna based on an antenna module.

[0115] 5B, "receiving panel antenna 1 based on antenna module 151_1 receives one or more modulated signals (one or more transmit signals) transmitted by TRP #1 of 501_1," but it may also be "receiving panel antenna 1 based on antenna module 151_1 and receiving panel antenna 2 based on antenna module 151_2 receives one or more modulated signals (one or more transmit signals) transmitted by TRP #1 of 501_1." In other words, receiving panel antennas based on multiple antenna modules may be used to receive one or more modulated signals (one or more transmit signals) transmitted by TRP #1 of 501_1 (or TRP #2 of 501_2).

[0116] In Figure 5B, "terminal 502 having the configurations of Figures 1A, 1B, and 1C" receives modulated signals (transmission signals) transmitted by two TRPs, but the same implementation is possible when "terminal 502 having the configurations of Figures 1A, 1B, and 1C" receives modulated signals (transmission signals) transmitted by two or more TRPs.

[0117] As shown in Figure 5B, the terminal 502 can improve data transmission efficiency by receiving a modulated signal from the TRP for each receiving panel antenna based on the antenna module, and by using the antenna module, the terminal can achieve the effect of improving the data reception quality.

[0118] FIG. 5C shows an example of communication between "terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" and "TRP#1 of 501_1 and TRP#2 of 501_2", which is different from that of FIGS. 5A and 5B.

[0119] In the explanations of Figures 1A, 1B, and 1C, it was explained that "when M = m holds, the 'transmitting panel antenna i based on antenna module 106_i' and the 'receiving panel antenna i based on antenna module 151_i' may be shared, and may be configured as a 'transmitting and receiving panel antenna i based on an antenna module' and a 'transmitting and receiving antenna i' (note that i is an integer between 1 and M (or m) inclusive)." In this case, what corresponds to the 'transmitting and receiving panel antenna i based on antenna module 591_i' in Figure 5C. Therefore, terminal 502 is equipped with transmit and receive panel antennas 1 based on antenna module 591_1 to M based on antenna modules 591_M.

[0120] 5C, "TRP#1 of 501_1 and TRP#2 of 501_2" are referred to as TRPs, but they may also be base stations. Therefore, for example, TRP#1 of 501_1 may be base station #1, and TRP#2 of 501_2 may be base station #2. In the following description, they will be referred to as TRPs.

[0121] "Terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmit signals) to TRP #1 of 501_1 using a transmit / receive panel antenna 1 based on antenna module 591_1. Also, "Terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmit signals) to TRP #2 of 501_2 using a transmit / receive panel antenna 2 based on antenna module 591_2. Note that the method by which "Terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" transmits one or more modulated signals (one or more transmit signals) has already been explained, so explanation will be omitted.

[0122] In Figure 5C, "terminal 502 having the configurations of Figures 1A, 1B, and 1C" transmits modulated signals (transmission signals) to two TRPs, but the same can be implemented when "terminal 502 having the configurations of Figures 1A, 1B, and 1C" transmits modulated signals (transmission signals) to two or more TRPs.

[0123] "Terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" receives one or more modulated signals (one or more transmission signals) transmitted by TRP #1 of 501_1 using a transmitting / receiving panel antenna 1 based on the antenna module 591_1. Also, "Terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" receives one or more modulated signals (one or more transmission signals) transmitted by TRP #2 of 501_2 using a receiving panel antenna 2 based on the antenna module 151_2. Note that the method by which "Terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" receives one or more modulated signals (one or more transmission signals) has already been explained, so explanation will be omitted.

[0124] In this way, "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will communicate (perform transmission and reception) with TRP #1 of 501_1 using transmitting and receiving panel antenna 1 based on antenna module 591_1, and "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will communicate (perform transmission and reception) with TRP #2 of 501_2 using transmitting and receiving panel antenna 2 based on antenna module 591_2.

[0125] Therefore, the "terminal 502 having the configurations of Figures 1A, 1B, and 1C" will set a TRP to be a communication partner for each transmitting and receiving panel antenna based on the antenna module. In the main form, the "terminal 502 having the configurations of Figures 1A, 1B, and 1C" will set one TRP to be a communication partner for each transmitting and receiving panel antenna based on the antenna module. However, the "terminal 502 having the configurations of Figures 1A, 1B, and 1C" may be able to set two or more TRPs to be a communication partner for each transmitting and receiving panel antenna based on the antenna module.

[0126] 5C, "communication (transmission and reception) with TRP #1 of 501_1 is performed using a transmitting and receiving panel antenna 1 based on the antenna module of 591_1," but it may also be "communication (transmission and reception) with TRP #1 of 501_1 is performed using a transmitting and receiving panel antenna 1 based on the antenna module of 591_1 and a transmitting and receiving panel antenna 3 based on the antenna module of 591_3." In other words, communication (transmission and reception) with TRP #1 of 501_1 (or TRP #2 of 501_2) may be performed using a transmitting and receiving panel antenna based on multiple antenna modules.

[0127] In Figure 5C, "terminal 502 having the configurations of Figures 1A, 1B, and 1C" receives modulated signals (transmission signals) transmitted by two TRPs, but the same implementation is possible when "terminal 502 having the configurations of Figures 1A, 1B, and 1C" receives modulated signals (transmission signals) transmitted by two or more TRPs.

[0128] As shown in Figure 5C, the terminal 502 can improve data transmission efficiency by communicating with the TRP for each transmitting and receiving panel antenna based on the antenna module, and by using the antenna module, the effect of improving data reception quality can be obtained at the terminal and TRP.

[0129] FIG. 5D shows an example of communication between "terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" and "TRP#1 of 501_1 and TRP#2 of 501_2", which is different from those shown in FIGS. 5A, 5B, and 5C.

[0130] 1A, 1B, and 1C, it was explained that "when M = m holds, the 'transmitting panel antenna i based on antenna module 106_i' and the 'receiving panel antenna i based on antenna module 151_i' may be shared, and may be configured as a 'transmitting and receiving panel antenna i based on an antenna module' and a 'transmitting and receiving antenna i' (note that i is an integer between 1 and M (or m) inclusive)." In this case, what corresponds to the 'transmitting and receiving panel antenna i based on antenna module 591_i' in FIG. 5D. Therefore, terminal 502 is equipped with transmit and receive panel antennas 1 based on antenna module 591_1 to M based on antenna module 591_M.

[0131] 5D, "TRP#1 of 501_1 and TRP#2 of 501_2" are referred to as TRPs, but they may also be base stations. Therefore, for example, TRP#1 of 501_1 may be base station #1, and TRP#2 of 501_2 may be base station #2. In the following description, they will be referred to as TRPs.

[0132] "Terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmit signals) to TRP #1 of 501_1 using a transmit / receive panel antenna 1 based on antenna module 591_1. Also, "Terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmit signals) to TRP #2 of 501_2 using a transmit / receive panel antenna 2 based on antenna module 591_2. Note that the method by which "Terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" transmits one or more modulated signals (one or more transmit signals) has already been explained, so explanation will be omitted.

[0133] In Figure 5D, "terminal 502 having the configurations of Figures 1A, 1B, and 1C" transmits modulated signals (transmission signals) to two TRPs, but the same implementation is possible when "terminal 502 having the configurations of Figures 1A, 1B, and 1C" transmits modulated signals (transmission signals) to two or more TRPs.

[0134] "Terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" receives one or more modulated signals (one or more transmission signals) transmitted by TRP #1 of 501_1 using a transmitting / receiving panel antenna 1 based on the antenna module 591_1. Also, "Terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" receives one or more modulated signals (one or more transmission signals) transmitted by TRP #2 of 501_2 using a receiving panel antenna 3 based on the antenna module 151_3. Note that the method by which "Terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" receives one or more modulated signals (one or more transmission signals) has already been explained, so explanation will be omitted.

[0135] In this way, "terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" transmits one or more modulated signals (one or more transmit signals) to TRP #1 of 501_1 using a transmit / receive panel antenna 1 based on antenna module 591_1. Also, "terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" transmits one or more modulated signals (one or more transmit signals) to TRP #2 of 501_2 using a transmit / receive panel antenna 2 based on antenna module 591_2. Therefore, when "terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" transmits a modulated signal (transmit signal), a destination TRP is set for each transmit / receive panel antenna based on an antenna module. Typically, one destination TRP is set for each transmit / receive panel antenna based on an antenna module. However, it is also possible to set two or more destination TRPs for each transmit panel antenna based on an antenna module.

[0136] In this way, "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will communicate (perform reception) with TRP #1 of 501_1 using transmitting / receiving panel antenna 1 based on antenna module 591_1, and "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will communicate (perform reception) with TRP #2 of 501_2 using transmitting / receiving panel antenna 3 based on antenna module 591_3.

[0137] Therefore, the "terminal 502 having the configurations of Figures 1A, 1B, and 1C" sets a TRP to be the counterpart for reception for each transmitting and receiving panel antenna based on the antenna module. In the main form, the "terminal 502 having the configurations of Figures 1A, 1B, and 1C" sets one TRP to be the counterpart for reception for each transmitting and receiving panel antenna based on the antenna module. However, the "terminal 502 having the configurations of Figures 1A, 1B, and 1C" may be able to set two or more TRPs to be the counterpart for reception for each transmitting and receiving panel antenna based on the antenna module.

[0138] 5D states that "one or more modulated signals (one or more transmit signals) are transmitted to TRP #1 of 501_1 using a transmit / receive panel antenna 1 based on the antenna module 591_1," but it may also be that "one or more modulated signals (one or more transmit signals) are transmitted to TRP #1 of 501_1 using a transmit / receive panel antenna 1 based on the antenna module 591_1 and a transmit / receive panel antenna 4 based on the antenna module 591_4." In other words, one or more modulated signals (one or more transmit signals) may be transmitted to TRP #1 of 501_1 (or TRP #2 of 501_2) using a transmit / receive panel antenna based on multiple antenna modules.

[0139] 5D states that "one or more modulated signals (one or more transmission signals) transmitted by TRP#1 of 501_1 are received using a transmitting / receiving panel antenna 1 based on the antenna module of 591_1," but it may also be that "one or more modulated signals (one or more transmission signals) transmitted by TRP#1 of 501_1 are received using a transmitting / receiving panel antenna 1 based on the antenna module of 591_1 and a transmitting / receiving panel antenna 5 based on the antenna module of 591_5." In other words, one or more modulated signals (one or more transmission signals) transmitted by TRP#1 of 501_1 (or TRP#2 of 501_2) may be received using a transmitting / receiving panel antenna based on multiple antenna modules.

[0140] As shown in Figure 5D, the "transmitting and receiving panel antenna based on an antenna module used by a terminal when transmitting a modulated signal (transmission signal) to the first TRP" and the "transmitting and receiving panel antenna based on an antenna module used by the terminal when receiving a modulated signal transmitted by the first TRP" may be the same or different.

[0141] As shown in Figure 5D, the terminal 502 can improve data transmission efficiency by setting "transmission to TRP and / or reception from TRP" for each transmitting / receiving panel antenna based on the antenna module, and by using the antenna module, the effect of improving data reception quality can be obtained.

[0142] Next, specific examples of the operation of TRP#1 of 501_1, TRP#2 of 501_2, and terminal 502 when the states of TRP#1 of 501_1, TRP#2 of 501_2, and terminal 502 are as shown in Figures 5A, 5B, 5C, and 5D will be described.

[0143] When the state of TRP #1 of 501_1, TRP #2 of 501_2, and terminal 502 is as shown in Figure 5C, an example of communication between "TRP #1 of 501_1 and terminal 502" is shown in Figure 6A1, and an example of communication between "TRP #2 of 501_2 and terminal 502" is shown in Figure 6A2. Since it is in the state of Figure 5C, terminal 502 is assumed to be equipped with a transmitting and receiving antenna based on an antenna module. Furthermore, the transmitting and receiving panel antenna based on the antenna module equipped in terminal 502 is assumed to be equipped with multiple antenna modules.

[0144] The "frequency used by TRP #1 of 501_1 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #1 of 501_1" are (sometimes referred to as "part") the same (for example, TDD (Time Division Duplex) may be used). (However, the "frequency used by TRP #1 of 501_1 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #1 of 501_1" may be different.)

[0145] The "frequency used by TRP #2 of 501_2 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #2 of 501_2" are (sometimes referred to as "part") the same (for example, TDD may be used). (However, the "frequency used by TRP #2 of 501_2 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #2 of 501_2" may be different.)

[0146] As shown in Figure 6A1, TRP #1 of 501_1 transmits an RS (reference signal) (601_1). Terminal 502 receives the RS (651_1) and, based on the reception status of the RS, estimates candidates for transmitting and receiving panel antennas based on the antenna module to be used when "terminal 502 transmits a modulated signal to TRP #1 of 501_1" and "terminal 502 receives the modulated signal transmitted from TRP #1 of 501_1 to terminal 502." The terminal generates "information regarding the allocation of transmitting and receiving panel antennas based on the antenna module when terminal 502 transmits and receives the modulated signal" (652_1). Terminal 502 then transmits this (above) information (653_1), and TRP #1 of 501_1 receives this (above) information (602_1). (Note that the RS in "Send RS (601_1)" can be considered an RS for selecting a transmitting / receiving panel antenna based on an antenna module to be used for communication from the transmitting / receiving panel antennas based on the antenna module equipped in the terminal 502.)

[0147] In this case, the terminal 502 or the TRP #1 of 501_1 may determine the transmitting / receiving panel antenna based on the antenna module to be used when "terminal 502 transmits a modulated signal to TRP #1 of 501_1" and "terminal 502 receives the modulated signal transmitted from TRP #1 of 501_1 to terminal 502." A specific example of the transmitting / receiving panel antenna based on the antenna module to be used when "terminal 502 transmits a modulated signal to TRP #1 of 501_1" and "terminal 502 receives the modulated signal transmitted from TRP #1 of 501_1 to terminal 502" is shown in FIG. 5C . Alternatively, the terminal 502 may transmit modulated signals to multiple TRPs using transmitting / receiving panel antennas based on multiple antenna modules. The modulated signals transmitted by the TRPs may then be received using transmitting / receiving panel antennas based on multiple antenna modules.

[0148] Then, TRP #1 of 501_1 transmits an RS (603_1). Terminal 502 receives the RS (654_1) and, from the reception state of the RS, estimates candidates for the antenna module equipped in the transmitting / receiving panel antenna based on the antenna module used when "terminal 502 transmits a modulated signal to TRP #1 of 501_1" and "terminal 502 receives the modulated signal transmitted from TRP #1 of 501_1 to terminal 502," and generates "information on the antenna module when terminal 502 transmits and receives the modulated signal" (655_1). Terminal 502 then determines "the antenna module equipped in the transmitting / receiving panel antenna based on the antenna module" to be used when "terminal 502 transmits a modulated signal to TRP #1 of 501_1" and "terminal 502 receives the modulated signal transmitted from TRP #1 of 501_1 to terminal 502." In this case, the number of "antenna modules provided in the transmitting / receiving panel antenna based on the antenna module" used may be one or more.

[0149] For example, in this case, when the terminal 502 transmits multiple modulated signals to the TRP #1 of the 501_1, multiple antenna modules are selected as the antenna modules for transmitting the modulated signals. Also, when the terminal 502 transmits one modulated signal to the TRP #1 of the 501_1, one antenna module or multiple antenna modules may be selected as the antenna module for transmitting the modulated signal.

[0150] Also, for example, at this time, when terminal 502 receives a modulated signal transmitted by TRP #1 of 501_1, it may select one antenna module or multiple antenna modules as the antenna module for receiving the modulated signal. (Note that the RS in "transmitting RS (603_1)" can be considered an RS for selecting the antenna module to be used for communication from the antenna modules equipped in the transmitting / receiving panel antenna based on the antenna module equipped in terminal 502.) Specific examples of transmitting RS will be explained later.

[0151] Then, the terminal 502 transmits one or more modulated signals (hereinafter, sometimes referred to as a modulated signal group) using the selected “transmitting / receiving panel antenna based on the antenna module and the antenna module” (656_1) (hereinafter, sometimes referred to as “transmitting an uplink modulated signal”). Then, this (above) modulated signal is received by TRP#1 of the terminal 501_1 (604_1).

[0152] Furthermore, TRP #1 of 501_1 transmits one or more modulated signals (hereinafter, sometimes referred to as a modulated signal group) (605_1) (hereinafter, sometimes referred to as transmitting a downlink modulated signal). The terminal 502 receives the modulated signals (657_1) using the selected "transmitting / receiving panel antenna based on the antenna module and the antenna module."

[0153] 6A1 is an example of communication between "TRP#1 of 501_1 and terminal 502", and the communication between "TRP#1 of 501_1 and terminal 502" is not limited to this example. Also, although TRP#1 of 501_1 transmits an RS, the name is not limited to this. Furthermore, the order is that terminal 502 transmits a modulated signal, and then TRP#1 of 501_1 transmits a modulated signal, but the order of "transmission of modulated signal from terminal 502" and "transmission of modulated signal from TRP#1 of 501_1" is not limited to this example.

[0154] The following describes the exchange between "TRP #2 of 501_2 and terminal 502." As shown in FIG. 6A2, TRP #2 of 501_2 transmits an RS (601_2). Terminal 502 receives the RS (651_2) and, based on the RS reception status, estimates candidates for transmitting and receiving panel antennas based on the antenna module used when "terminal 502 transmits a modulated signal to TRP #2 of 501_2" and "terminal 502 receives the modulated signal transmitted from TRP #2 of 501_2 to terminal 502." The terminal generates "information regarding the allocation of transmitting and receiving panel antennas based on the antenna module when terminal 502 transmits and receives a modulated signal" (652_2). Terminal 502 then transmits this (above) information (653_2), and TRP #2 of 501_2 receives this (above) information (602_2). (Note that the RS in "Send RS (601_2)" can be considered an RS for selecting a transmitting / receiving panel antenna based on an antenna module to be used for communication from the transmitting / receiving panel antennas based on the antenna module equipped in terminal 502.) Specific examples of transmitting RS will be explained later.

[0155] In this case, the terminal 502 or the TRP #2 of 501_2 may determine the transmitting / receiving panel antenna based on the antenna module to be used when "terminal 502 transmits a modulated signal to TRP #2 of 501_2" and "terminal 502 receives the modulated signal transmitted from TRP #2 of 501_2 to terminal 502." A specific example of the transmitting / receiving panel antenna based on the antenna module to be used when "terminal 502 transmits a modulated signal to TRP #2 of 501_2" and "terminal 502 receives the modulated signal transmitted from TRP #2 of 501_2 to terminal 502" is shown in FIG. 5C . Alternatively, the terminal 502 may transmit modulated signals to multiple TRPs using transmitting / receiving panel antennas based on multiple antenna modules. The modulated signals transmitted by the TRPs may then be received using transmitting / receiving panel antennas based on multiple antenna modules.

[0156] Then, TRP #2 of 501_2 transmits an RS (603_2). Terminal 502 receives the RS (654_2) and, from the reception state of the RS, estimates candidate antenna modules that the transmitting / receiving panel antenna will have based on the antenna module used when "terminal 502 transmits a modulated signal to TRP #2 of 501_2" and "terminal 502 receives the modulated signal transmitted from TRP #2 of 501_2 to terminal 502," and generates "information about the antenna module when terminal 502 transmits and receives the modulated signal" (655_2). Terminal 502 then determines the antenna module that the transmitting / receiving panel antenna will have based on the antenna module used when "terminal 502 transmits a modulated signal to TRP #2 of 501_2" and "terminal 502 receives the modulated signal transmitted from TRP #2 of 501_2 to terminal 502." In this case, the number of "antenna modules provided in the transmitting / receiving panel antenna based on the antenna module" used may be one or more.

[0157] For example, in this case, when the terminal 502 transmits multiple modulated signals to the TRP #2 of the 501_2, multiple antenna modules are selected as the antenna modules for transmitting the modulated signals. Also, when the terminal 502 transmits one modulated signal to the TRP #2 of the 501_2, one antenna module or multiple antenna modules may be selected as the antenna module for transmitting the modulated signal.

[0158] Also, for example, at this time, when terminal 502 receives a modulated signal transmitted by TRP #2 of 501_2, it may select one antenna module or multiple antenna modules as the antenna module for receiving the modulated signal. (Note that the RS in "transmitting RS (603_2)" can be considered an RS for selecting the antenna module to be used for communication from the antenna modules equipped in the transmitting / receiving panel antenna based on the antenna module equipped in terminal 502.) Specific examples of transmitting RS will be explained later.

[0159] Then, the terminal 502 transmits one or more modulated signals (hereinafter, sometimes referred to as a modulated signal group) using the selected “transmitting / receiving panel antenna based on the antenna module and the antenna module” (656_2) (hereinafter, sometimes referred to as “transmitting an uplink modulated signal”). Then, this (above) modulated signal is received by TRP#2 of the terminal 501_2 (604_2).

[0160] Furthermore, TRP #2 of 501_2 transmits one or more modulated signals (hereinafter, sometimes referred to as a modulated signal group) (605_2) (hereinafter, sometimes referred to as transmitting a downlink modulated signal). The terminal 502 receives the modulated signals (657_2) using the selected "transmitting / receiving panel antenna based on the antenna module and the antenna module."

[0161] 6A2 is an example of an exchange between "TRP#2 of 501_2 and terminal 502", and the exchange between "TRP#2 of 501_2 and terminal 502" is not limited to this example. Also, although TRP#2 of 501_2 transmits an RS, the name is not limited to this. Furthermore, the order is that terminal 502 transmits a modulated signal, and then TRP#2 of 501_2 transmits a modulated signal, but the order of "transmission of modulated signal from terminal 502" and "transmission of modulated signal from TRP#2 of 501_2" is not limited to this example.

[0162] Through the exchange between "TRP#1 of 501_1 and terminal 502" in Figure 6A1 and the exchange between "TRP#2 of 501_2 and terminal 502" in Figure 6A2, for example, as shown in Figure 5C, TRP#1 of 501_1 transmits a downlink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to terminal 502, and TRP#2 of 501_2 transmits a downlink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to terminal 502.

[0163] At this time, it is assumed that the downlink SDM method, the downlink TDM method, and the downlink FDM method can be applied as the transmission method of "the downlink modulated signal transmitted by TRP #1 of 501_1 and the downlink modulated signal transmitted by TRP #2 of 501_2". Note that the system consisting of "TRP #1 of 501_1, TRP #2 of 501_2" and "terminal 502" may switch or use "downlink SDM method, downlink TDM method, downlink FDM method" depending on the communication situation, communication environment, the capabilities of each device, etc. The specific operation of the downlink SDM method, downlink TDM method, and downlink FDM method will be explained later.

[0164] Furthermore, through the exchange between "TRP#1 of 501_1 and terminal 502" in Figure 6A1 and the exchange between "TRP#2 of 501_2 and terminal 502" in Figure 6A2, for example, as shown in Figure 5C, terminal 502 will transmit an uplink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to TRP#1 of 501_1, and will transmit an uplink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to TRP#2 of 501_2.

[0165] At this time, it is assumed that the uplink SDM method, the uplink TDM method, and the uplink FDM method can be applied as the transmission method of "the uplink modulated signal that the terminal 502 transmits to the TRP #1 of 501_1 and the uplink modulated signal that the terminal 502 transmits to the TRP #2 of 501_2." Note that the system configured by "TRP #1 of 501_1, TRP #2 of 501_2" and "terminal 502" may switch or use "uplink SDM method, uplink TDM method, uplink FDM method" depending on the communication situation, communication environment, the capabilities of each device, etc. The specific operation of the uplink SDM method, uplink TDM method, and uplink FDM method will be explained later.

[0166] In this way, the terminal 502 can communicate with multiple TRPs, thereby improving data transmission efficiency, and by using the antenna module, the terminal and TRP can achieve the effect of improving the data reception quality.

[0167] When the state of TRP #1 of 501_1, TRP #2 of 501_2, and terminal 502 is as shown in Figure 5D, examples of communication between "TRP #1 of 501_1 and terminal 502" are shown in Figures 6B1, 6B2, and 6B3, and examples of communication between "TRP #2 of 501_2 and terminal 502" are shown in Figures 6C1, 6C2, and 6C3. Since the state is as shown in Figure 5D, terminal 502 is equipped with a transmitting and receiving antenna based on an antenna module. Furthermore, the transmitting and receiving panel antenna based on the antenna module equipped in terminal 502 is equipped with multiple antenna modules.

[0168] It is assumed that the "frequency used by TRP #1 of 501_1 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #1 of 501_1" are different. (For example, it is possible that FDD (Frequency Division Duplex) is used.) (However, the "frequency used by TRP #1 of 501_1 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #1 of 501_1" may be the same (sometimes referred to as "partially").)

[0169] It is assumed that "the frequency used by TRP #2 of 501_2 to transmit a modulated signal to terminal 502" and "the frequency used by terminal 502 to transmit a modulated signal to TRP #2 of 501_2" are different. (For example, FDD may be used.) (However, "the frequency used by TRP #2 of 501_2 to transmit a modulated signal to terminal 502" and "the frequency used by terminal 502 to transmit a modulated signal to TRP #2 of 501_2" may be (sometimes referred to as "part") the same.)

[0170] FIG. 6B1 shows an example of communication between "TRP#1 of 501_1 and terminal 502," with the horizontal axis representing time.

[0171] For example, as shown in FIG. 6B1, TRP#1 of 501_1 and terminal 502 are assumed to exchange information for the setting 691_1 of the "receiving panel antenna based on the antenna module (or the receiving panel antenna of the transmitting / receiving panel antenna based on the antenna module)" and the "antenna module" when terminal 502 receives a modulated signal.

[0172] Thereafter, TRP#1 of 501_1 and terminal 502 exchange information for the setting 692_1 of the "transmitting panel antenna based on the antenna module (or the transmitting panel antenna of the transmitting / receiving panel antenna based on the antenna module)" and the "antenna module" when terminal 502 transmits a modulated signal.

[0173] Then, TRP#1 of 501_1 and terminal 502 are assumed to perform "data communication 693_1 between TRP#1 of 501_1 and terminal 502."

[0174] In Figure 6B1, the setting 691_1 of the "receiving panel antenna based on the antenna module (or the receiving panel antenna of the transmitting and receiving panel antenna based on the antenna module)" and the "antenna module" when the terminal 502 receives a modulated signal is followed by the setting 692_1 of the "transmitting panel antenna based on the antenna module (or the transmitting panel antenna of the transmitting and receiving panel antenna based on the antenna module)" and the "antenna module" when the terminal 502 transmits a modulated signal, but this is merely an example and is not limited to this order, and these two settings may be implemented in any way.

[0175] Figure 6B2 shows an example of specific interaction between "TRP#1 of 501_1 and terminal 502" for "receiving panel antenna based on antenna module (or receiving panel antenna of transmitting / receiving panel antenna based on antenna module)" and "antenna module" setting 691_1" in Figure 6B1.

[0176] As shown in Figure 6B2, TRP #1 of 501_1 transmits an RS (611_1). Terminal 502 receives the RS (661_1) and, based on the reception status of the RS, estimates candidates for the transmitting and receiving panel antennas (or receiving panel antennas) based on the antenna module to be used when "terminal 502 receives the modulated signal transmitted to terminal 502 by TRP #1 of 501_1," and generates "information regarding the allocation of the transmitting and receiving panel antennas (or receiving panel antennas based on the antenna module) based on the antenna module when terminal 502 receives the modulated signal" (662_1). Terminal 502 then transmits this (above) information (663_1), and TRP #1 of 501_1 receives this (above) information (612_1). (Note that the RS in "Send RS (611_1)" can be considered an RS for selecting a transmit / receive panel antenna (or a receive panel antenna based on an antenna module) based on an antenna module to be used for reception from the transmit / receive panel antennas (or receive panel antennas based on an antenna module) based on the antenna module equipped in terminal 502.) Specific examples of transmitting RS will be explained later.

[0177] In this case, the terminal 502 or the TRP #1 of 501_1 may determine the transmitting and receiving panel antenna (or receiving panel antenna based on an antenna module) based on the antenna module to be used when "terminal 502 receives the modulated signal transmitted from TRP #1 of 501_1 to terminal 502." A specific example of the transmitting and receiving panel antenna (or receiving panel antenna based on an antenna module) based on the antenna module to be used when "terminal 502 receives the modulated signal transmitted from TRP #1 of 501_1 to terminal 502" is as shown in Figure 5D (or Figure 5B). As another method, the modulated signal transmitted by the TRP may be received using transmitting and receiving panel antennas based on multiple antenna modules (or receiving panel antennas based on antenna modules).

[0178] Then, TRP #1 of 501_1 transmits an RS (613_1). Terminal 502 receives the RS (664_1) and, based on the reception status of the RS, estimates candidate antenna modules that will be included in the transmitting / receiving panel antenna (or receiving panel antenna based on an antenna module) based on the antenna module used when "terminal 502 receives the modulated signal transmitted from TRP #1 of 501_1 to terminal 502," and generates "information regarding the antenna module when terminal 502 receives the modulated signal" (665_1). Terminal 502 then determines the antenna module that will be included in the transmitting / receiving panel antenna (or receiving panel antenna based on an antenna module) based on the antenna module used when "terminal 502 receives the modulated signal transmitted from TRP #1 of 501_1 to terminal 502." At this time, the "antenna module included in the transmitting / receiving panel antenna based on an antenna module (or receiving panel antenna based on an antenna module)" used may be one or more.

[0179] For example, when terminal 502 receives a modulated signal transmitted by TRP #1 of 501_1, it may select one antenna module or multiple antenna modules as the antenna module for receiving the modulated signal. (Note that the RS in "send RS (613_1)" can be considered an RS for selecting the antenna module to be used for reception from the antenna modules (or receiving panel antennas based on antenna modules) included in the transmitting / receiving panel antenna based on the antenna module included in terminal 502.) Specific examples of transmitting RS will be explained later.

[0180] 6B2 is an example of an exchange between "TRP#1 of 501_1 and terminal 502", and the exchange between "TRP#1 of 501_1 and terminal 502" is not limited to this example. Also, although TRP#1 of 501_1 transmits RS, the name is not limited to this.

[0181] Figure 6B3 shows an example of a specific exchange between "TRP#1 of 501_1 and terminal 502" for the "transmitting panel antenna based on an antenna module (or a transmitting panel antenna of a transmitting / receiving panel antenna based on an antenna module)" and "antenna module" setting 692_1" in Figure 6B1.

[0182] As shown in Figure 6B3, terminal 502 transmits an RS (671_1). TRP #1 of 501_1 receives the RS (621_1) and, based on the reception state of the RS, "generates information regarding the allocation of transmitting and receiving panel antennas based on the antenna module (or transmitting panel antennas based on the antenna module) when terminal 502 transmits a modulated signal" (622_1). Then, TRP #1 of 501_1 "transmits information regarding the allocation of transmitting and receiving panel antennas based on the antenna module (or transmitting panel antennas based on the antenna module) when terminal 502 transmits a modulated signal" (623_1).

[0183] Terminal 502 obtains this (above) information and determines the transmitting / receiving panel antenna (or transmitting panel antenna based on an antenna module) based on the antenna module that terminal 502 will use when transmitting a modulated signal to TRP #1 of 501_1. (Note that the RS of "transmitting RS (671_1)" can be considered an RS for selecting the transmitting / receiving panel antenna (or transmitting panel antenna based on an antenna module) based on the antenna module to be used for transmission from the transmitting / receiving panel antennas (or transmitting panel antennas based on antenna modules) that terminal 502 is equipped with.) Specific examples of transmitting RS will be explained later.

[0184] At this time, the "determination of the transmitting and receiving panel antenna based on the antenna module (or the transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal to TRP#1 of 501_1" may be performed by terminal 502 or by TRP#1 of 501_1.

[0185] For example, when TRP #1 of 501_1 "determines the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal to TRP #1 of 501_1," the "information regarding the allocation of the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) when "terminal 502 transmits a modulated signal"" will include information regarding the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when "terminal 502 transmits a modulated signal."

[0186] When terminal 502 "determines the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal to TRP #1 of 501_1," terminal 502 obtains "information regarding the allocation of transmitting and receiving panel antennas (or transmitting panel antennas based on the antenna module) to be used when terminal 502 transmits a modulated signal," and determines the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal.

[0187] A specific example of the "transmitting / receiving panel antenna based on the antenna module (or transmitting panel antenna based on the antenna module) used by the terminal 502 when transmitting a modulated signal to TRP #1 of 501_1" is shown in Figure 5D (or Figure 5A). Alternatively, the terminal 502 may transmit modulated signals to multiple TRPs using a transmit / receive panel antenna based on multiple antenna modules (or transmitting panel antennas based on antenna modules).

[0188] Then, the terminal 502 transmits an RS (672_1). The TRP #1 of the terminal 501_1 receives the RS (624_1) and, based on the reception state of the RS, transmits information about antenna modules that are candidates for when the terminal 502 transmits a modulated signal (625_1).

[0189] Terminal 502 receives this information (673_1) and determines the antenna module to be used when terminal 502 transmits a modulated signal to TRP#1 of 501_1 (674_1). At this time, the "antenna module equipped in the transmitting / receiving panel antenna based on the antenna module (or the transmitting panel antenna based on the antenna module)" to be used may be one or more.

[0190] For example, when terminal 502 transmits a modulated signal to TRP #1 of 501_1, it may select one antenna module or multiple antenna modules as the antenna module for transmitting the modulated signal. (Note that the RS in "transmitting RS (672_1)" can be considered an RS for selecting the antenna module to be used for transmission from the antenna modules included in the transmitting / receiving panel antenna based on the antenna module included in terminal 502 (or the transmitting panel antenna based on the antenna module).) Specific examples of transmitting RS will be explained later.

[0191] 6B3 is an example of communication between "TRP#1 of 501_1 and terminal 502", and communication between "TRP#1 of 501_1 and terminal 502" is not limited to this example. Also, although terminal 502 transmits RS, the name of the RS is not limited to this.

[0192] FIG. 6C1 shows an example of communication between "TRP#2 of 501_2 and terminal 502," with the horizontal axis representing time.

[0193] For example, as shown in Figure 6C1, TRP #2 of 501_2 and terminal 502 exchange information for the setting 691_2 of the "receiving panel antenna based on the antenna module (or the receiving panel antenna of the transmitting and receiving panel antenna based on the antenna module)" and the "antenna module" when terminal 502 receives a modulated signal.

[0194] Thereafter, TRP#2 of 501_2 and terminal 502 exchange information for the setting 692_2 of the "transmitting panel antenna based on the antenna module (or the transmitting panel antenna of the transmitting / receiving panel antenna based on the antenna module)" and the "antenna module" when terminal 502 transmits a modulated signal.

[0195] Then, TRP#2 of 501_2 and the terminal 502 perform "execution of data communication 693_2 between TRP#2 of 501_2 and the terminal 502."

[0196] In Figure 6C1, the "setting 691_2 of the 'receiving panel antenna based on the antenna module (or the receiving panel antenna of the transmitting and receiving panel antenna based on the antenna module)' and the 'antenna module' when the terminal 502 receives a modulated signal" is followed by the "setting 692_2 of the 'transmitting panel antenna based on the antenna module (or the transmitting panel antenna of the transmitting and receiving panel antenna based on the antenna module)' and the 'antenna module' when the terminal 502 transmits a modulated signal," but this is merely an example and is not limited to this order, and these two settings may be implemented in any way.

[0197] Figure 6C2 shows an example of specific interaction between "TRP#2 of 501_2 and terminal 502" for "receiving panel antenna based on antenna module (or receiving panel antenna of transmitting / receiving panel antenna based on antenna module)" and "antenna module" setting 691_2" in Figure 6C1.

[0198] As shown in Figure 6C2, TRP #2 of 501_2 transmits an RS (611_2). Terminal 502 receives the RS (661_2) and, based on the reception status of the RS, estimates candidates for transmitting and receiving panel antennas based on the antenna module (or receiving panel antennas based on the antenna module) to be used when "terminal 502 receives the modulated signal transmitted to terminal 502 by TRP #2 of 501_2," and generates "information regarding the allocation of transmitting and receiving panel antennas based on the antenna module (or receiving panel antennas based on the antenna module) when terminal 502 receives the modulated signal" (662_2). Terminal 502 then transmits this (above) information (663_2), and TRP #2 of 501_2 receives this (above) information (612_2). (Note that the RS in "Send RS (611_2)" can be considered an RS for selecting a transmit / receive panel antenna (or a receive panel antenna based on an antenna module) based on an antenna module to be used for reception from the transmit / receive panel antennas (or receive panel antennas based on an antenna module) based on an antenna module equipped in terminal 502.) Specific examples of transmitting RS will be explained later.

[0199] In this case, the terminal 502 or the TRP #2 of 501_2 may determine the transmitting and receiving panel antenna (or receiving panel antenna based on an antenna module) based on the antenna module to be used when "terminal 502 receives the modulated signal transmitted by TRP #2 of 501_2 to terminal 502." A specific example of the transmitting and receiving panel antenna (or receiving panel antenna based on an antenna module) based on the antenna module to be used when "terminal 502 receives the modulated signal transmitted by TRP #2 of 501_2 to terminal 502" is as shown in Figure 5D (or Figure 5B). As another method, the modulated signal transmitted by the TRP may be received using transmitting and receiving panel antennas based on multiple antenna modules (or receiving panel antennas based on antenna modules).

[0200] Then, TRP #2 of 501_2 transmits an RS (613_2). Terminal 502 receives the RS (664_2) and, based on the reception status of the RS, estimates candidate antenna modules that will be included in the transmitting / receiving panel antenna (or receiving panel antenna based on an antenna module) based on the antenna module used when "terminal 502 receives the modulated signal transmitted from TRP #2 of 501_2 to terminal 502," and generates "information regarding the antenna module when terminal 502 receives the modulated signal" (665_2). Terminal 502 then determines the antenna module that will be included in the transmitting / receiving panel antenna (or receiving panel antenna based on an antenna module) based on the antenna module used when "terminal 502 receives the modulated signal transmitted from TRP #2 of 501_2 to terminal 502." At this time, the "antenna module included in the transmitting / receiving panel antenna based on an antenna module (or receiving panel antenna based on an antenna module)" used may be one or more.

[0201] For example, when terminal 502 receives a modulated signal transmitted by TRP #2 of 501_2, it may select one antenna module or multiple antenna modules as the antenna module for receiving the modulated signal. (Note that the RS in "transmitting RS (613_2)" can be considered an RS for selecting the antenna module to be used for reception from the antenna modules provided in the transmitting / receiving panel antenna based on the antenna module provided in terminal 502 (or the receiving panel antenna based on the antenna module).) Specific examples of transmitting RS will be explained later.

[0202] 6C2 is an example of communication between "TRP#2 of 501_2 and terminal 502", and communication between "TRP#2 of 501_2 and terminal 502" is not limited to this example. Also, although TRP#2 of 501_2 transmits RS, the name is not limited to this.

[0203] Figure 6C3 shows an example of specific interaction between "TRP#2 of 501_2 and terminal 502" for "transmitting panel antenna based on antenna module (or transmitting panel antenna of transmitting / receiving panel antenna based on antenna module)" and "antenna module" setting 692_2" in Figure 6C1.

[0204] As shown in Fig. 6C3, terminal 502 transmits an RS (671_2). TRP #2 of 501_2 receives the RS (621_2) and, based on the reception state of the RS, "generates information regarding the allocation of transmitting and receiving panel antennas based on the antenna module (or transmitting panel antennas based on the antenna module) when terminal 502 transmits a modulated signal" (622_2). Then, TRP #2 of 501_2 "transmits information regarding the allocation of transmitting and receiving panel antennas based on the antenna module (or transmitting panel antennas based on the antenna module) when terminal 502 transmits a modulated signal" (623_2).

[0205] Terminal 502 obtains this (above) information and determines the transmitting / receiving panel antenna (or transmitting panel antenna based on an antenna module) based on the antenna module that terminal 502 will use when transmitting a modulated signal to TRP #2 of 501_2. (Note that the RS of "transmitting RS (671_2)" can be considered an RS for selecting the transmitting / receiving panel antenna (or transmitting panel antenna based on an antenna module) based on the antenna module to be used for transmission from the transmitting / receiving panel antennas (or transmitting panel antennas based on antenna modules) that terminal 502 is equipped with.) Specific examples of transmitting RS will be explained later.

[0206] At this time, the "determination of the transmitting and receiving panel antenna based on the antenna module (or the transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal to TRP#2 of 501_2" may be performed by terminal 502 or by TRP#2 of 501_2.

[0207] For example, when TRP#2 of 501_2 "determines the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal to TRP#2 of 501_2," the "information regarding the allocation of the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) when "terminal 502 transmits a modulated signal"" will include information regarding the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when "terminal 502 transmits a modulated signal."

[0208] When terminal 502 "determines the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal to TRP #2 of 501_2," terminal 502 obtains "information regarding the allocation of transmitting and receiving panel antennas (or transmitting panel antennas based on the antenna module) to be used when terminal 502 transmits a modulated signal," and determines the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal.

[0209] A specific example of the "transmitting / receiving panel antenna based on the antenna module (or transmitting panel antenna based on the antenna module) used by terminal 502 when transmitting a modulated signal to TRP #2 of 501_2" is as shown in Figure 5D (or Figure 5A). Alternatively, terminal 502 may transmit modulated signals to multiple TRPs using a transmit / receive panel antenna based on multiple antenna modules (or transmitting panel antenna based on antenna modules).

[0210] Then, the terminal 502 transmits an RS (672_2). The TRP#2 of the terminal 501_2 receives the RS (624_2) and, based on the reception state of the RS, transmits information about antenna modules that are candidates for when the terminal 502 transmits a modulated signal (625_2).

[0211] Terminal 502 receives this information (673_2) and determines the antenna module to be used when terminal 502 transmits a modulated signal to TRP#2 of 501_2 (674_2). At this time, the "antenna module equipped in the transmitting / receiving panel antenna based on the antenna module (or the transmitting panel antenna based on the antenna module)" to be used may be one or more.

[0212] For example, when terminal 502 transmits a modulated signal to TRP #2 of 501_2, it may select one antenna module or multiple antenna modules as the antenna module for transmitting the modulated signal. (Note that the RS in "transmitting RS (672_2)" can be considered an RS for selecting the antenna module to be used for transmission from the antenna modules equipped in the transmitting / receiving panel antenna based on the antenna module equipped in terminal 502 (or the transmitting panel antenna based on the antenna module).) Specific examples of transmitting RS will be explained later.

[0213] 6C3 is an example of communication between "TRP#2 of 501_2 and terminal 502," and communication between "TRP#2 of 501_2 and terminal 502" is not limited to this example. Also, although terminal 502 transmits RS, the name of the RS is not limited to this.

[0214] As shown in FIG. 6B1, after "setting 691_1 of the receiving panel antenna based on the antenna module (or the receiving panel antenna of the transmitting and receiving panel antenna based on the antenna module)" and "antenna module," and "setting 692_1 of the transmitting panel antenna based on the antenna module (or the transmitting panel antenna of the transmitting and receiving panel antenna based on the antenna module)" and "antenna module," TRP#1 of 501_1 and terminal 502 will "perform data communication 693_1 between TRP#1 of 501_1 and terminal 502."

[0215] As shown in FIG. 6C1, after "setting 691_2 of the receiving panel antenna based on the antenna module (or the receiving panel antenna of the transmitting and receiving panel antenna based on the antenna module)" and "antenna module," and "setting 692_2 of the transmitting panel antenna based on the antenna module (or the transmitting panel antenna of the transmitting and receiving panel antenna based on the antenna module)" and "antenna module," TRP#2 of 501_2 and terminal 502 will "perform data communication 693_2 by TRP#2 of 501_2 and terminal 502."

[0216] In "Data communication 693_1 between TRP#1 of 501_1 and terminal 502" and "Data communication 693_2 between TRP#2 of 501_2 and terminal 502," terminal 502 transmits an uplink modulated signal to TRP#1 of 501_1, and terminal 502 transmits an uplink modulated signal to TRP#2 of 501_2.

[0217] Then, TRP#1 of 501_1 transmits a downlink modulated signal to terminal 502, and TRP#2 of 501_2 transmits a downlink modulated signal to terminal 502.

[0218] At this time, it is assumed that the uplink SDM method, the uplink TDM method, and the uplink FDM method can be applied as the transmission method of "the uplink modulated signal that the terminal 502 transmits to the TRP #1 of 501_1 and the uplink modulated signal that the terminal 502 transmits to the TRP #2 of 501_2." Note that the system configured by "TRP #1 of 501_1, TRP #2 of 501_2" and "terminal 502" may switch or use "uplink SDM method, uplink TDM method, uplink FDM method" depending on the communication situation, communication environment, the capabilities of each device, etc. The specific operation of the uplink SDM method, uplink TDM method, and uplink FDM method will be explained later.

[0219] In addition, it is assumed that the downlink SDM method, the downlink TDM method, and the downlink FDM method can be applied as the transmission method of "the downlink modulated signal transmitted by TRP #1 of 501_1 and the downlink modulated signal transmitted by TRP #2 of 501_2". Note that the system consisting of "TRP #1 of 501_1, TRP #2 of 501_2" and "terminal 502" may switch or use "downlink SDM method, downlink TDM method, downlink FDM method" depending on the communication situation, communication environment, the capabilities of each device, etc. The specific operation of the downlink SDM method, downlink TDM method, and downlink FDM method will be explained later.

[0220] In this way, the terminal 502 can communicate with multiple TRPs, thereby improving data transmission efficiency, and by using the antenna module, the terminal and TRP can achieve the effect of improving the data reception quality.

[0221] A downlink SDM transmission method for "downlink modulated signals transmitted by TRP#1 of 501_1 and downlink modulated signals transmitted by TRP#2 of 501_2" will be explained.

[0222] 7A1, 7A2, 7A3, and 7A4 show examples of arrangement on the time-frequency axis when transmitting "downlink modulated signals transmitted by TRP #1 of 501_1 and downlink modulated signals transmitted by TRP #2 of 501_2" using a downlink SDM method (e.g., fully overlapping, partially overlapping, etc.). In Fig. 7A1, 7A2, 7A3, and 7A4, the horizontal axis represents time and the vertical axis represents frequency.

[0223] Hereinafter, "downlink modulated signal transmitted by TRP#1 of 501_1" will be referred to as "modulated signal(s) transmitted by TRP#1 (of 501_1)", and "downlink modulated signal transmitted by TRP#2 of 501_2" will be referred to as "modulated signal(s) transmitted by TRP#2 (of 501_2)".

[0224] An example of a downlink SDM scheme is as follows:

[0225] Downlink SDM Method, Example 1-1: Assume that "modulated signal(s) 701_1 transmitted by TRP#1 (of 501_1)" exists at frequency AA1 and time A1 as shown in FIG. 7A1.

[0226] At this time, it is assumed that "modulated signal(s) 701_2 transmitted by TRP#2 (of 501_2)" exists at frequency AA1 and time A1 as shown in FIG. 7A1.

[0227] Downlink SDM Method, Example 1-2: Assume that "modulated signal(s) 701_1 transmitted by TRP#1 (of 501_1)" exists at frequency AA1 and time A1 as shown in FIG. 7A1.

[0228] At this time, it is assumed that "modulated signal(s) 701_2 transmitted by TRP#2 (of 501_2)" exists in part of frequency AA1, at time A1, as shown in FIG. 7A2.

[0229] Downlink SDM Method, Example 1-3: Assume that "modulated signal(s) 701_1 transmitted by TRP#1 (of 501_1)" exists at frequency AA1 and time A1 as shown in FIG. 7A1.

[0230] At this time, it is assumed that "modulated signal(s) 701_2 transmitted by TRP#2 (of 501_2)" exists in a part of frequency AA1, time A1 as shown in FIG. 7A3.

[0231] Downlink SDM Method, Example 1-4: Assume that "modulated signal(s) 701_1 transmitted by TRP#1 (of 501_1)" exists at frequency AA1 and time A1 as shown in FIG. 7A1.

[0232] At this time, it is assumed that "modulated signal(s) 701_2 transmitted by TRP#2 (of 501_2)" exists in part of frequency AA1 and part of time A1, as shown in FIG. 7A4.

[0233] Downlink SDM Method, Example 1-5: Assume that "modulated signal(s) 701_1 transmitted by TRP#1 (of 501_1)" exists at frequency AA1 and time A1 as shown in FIG. 7A1.

[0234] In this case, the frequency and time used by "modulated signal(s) 701_2 transmitted by TRP#2 (501_2)" overlaps with part of frequency CC1 and / or part of time C1.

[0235] A downlink TDM transmission method for "downlink modulated signals transmitted by TRP#1 of 501_1 and downlink modulated signals transmitted by TRP#2 of 501_2" will be explained.

[0236] 7B1 and 7B2 show examples of arrangement on the time-frequency axis when transmitting "downlink modulated signals transmitted by TRP #1 of 501_1 and downlink modulated signals transmitted by TRP #2 of 501_2" using a downlink TDM scheme (e.g., tdmScheme, non-overlapping, etc.). In Fig. 7B1 and Fig. 7B2, the horizontal axis represents time and the vertical axis represents frequency.

[0237] An example of a downlink TDM scheme is as follows:

[0238] Downlink TDM Method, Example 1-1: Assume that "modulated signal(s) 701_1 transmitted by TRP#1 (of 501_1)" exists at frequency BB1 and time B1 as shown in FIG. 7B1.

[0239] At this time, it is assumed that "modulated signal(s) 701_2 transmitted by TRP#2 (of 501_2)" exists at frequency BB1 and time B2 as shown in FIG. 7B1.

[0240] Downlink TDM Method, Example 1-2: Assume that "modulated signal(s) 701_1 transmitted by TRP#1 (of 501_1)" exists at frequency BB1 and time B1 as shown in FIG. 7B2.

[0241] At this time, it is assumed that "modulated signal(s) 701_2 transmitted by TRP#2 (501_2)" exists at a part of frequency BB1, time B2, as shown in FIG. 7B2.

[0242] A downlink FDM transmission method for "downlink modulated signals transmitted by TRP#1 of 501_1 and downlink modulated signals transmitted by TRP#2 of 501_2" will be explained.

[0243] 7C1, 7C2, and 7C3 show examples of arrangement on the time-frequency axis when transmitting "downlink modulated signals transmitted by TRP #1 of 501_1 and downlink modulated signals transmitted by TRP #2 of 501_2" using a downlink FDM scheme (e.g., fdmScheme, non-overlapping, etc.). In Fig. 7C1, 7C2, and 7C3, the horizontal axis represents time and the vertical axis represents frequency.

[0244] An example of a downlink FDM scheme is as follows:

[0245] Downlink FDM Method, Example 1-1: Assume that "modulated signal(s) 701_1 transmitted by TRP#1 (of 501_1)" exists at frequency CC1 and time C1 as shown in FIG. 7C1.

[0246] At this time, it is assumed that "modulated signal(s) 701_2 transmitted by TRP#2 (of 501_2)" exists at frequency CC2 and time C1 as shown in FIG. 7C1.

[0247] Downlink FDM Method, Example 1-2: Assume that "modulated signal(s) 701_1 transmitted by TRP#1 (of 501_1)" exists at frequency CC1 and time C1 as shown in FIG. 7C2.

[0248] At this time, it is assumed that "modulated signal(s) 701_2 transmitted by TRP#2 (of 501_2)" exists at a part of frequency CC2 and time C1 as shown in FIG. 7C2.

[0249] Downlink FDM Method, Example 1-3: Assume that "modulated signal(s) 701_1 transmitted by TRP#1 (of 501_1)" exists at frequency CC1 and time C1 as shown in FIG. 7C3.

[0250] At this time, it is assumed that "modulated signal(s) 701_2 transmitted by TRP#2 (of 501_2)" exists at frequency CC2 and time C2 as shown in FIG. 7C3.

[0251] Downlink FDM Method, Example 1-4: It is assumed that "modulated signal(s) 701_1 transmitted by TRP#1 (of 501_1)" exists at frequency CC1 and time C1.

[0252] At this time, it is assumed that "modulated signal (group) 701_2 transmitted by TRP#2 (501_2)" exists at frequency CC2 and time C2. Time C1 and time C2 partially overlap.

[0253] In the above description, the "modulated signal(s) 701_1 transmitted by TRP#1 (501_1)" and the "modulated signal(s) 701_2 transmitted by TRP#2 (501_2)" may contain the same data. Therefore, repetition may be applied to the "modulated signal(s) 701_1 transmitted by TRP#1 (501_1)" and the "modulated signal(s) 701_2 transmitted by TRP#2 (501_2)". Therefore, a single frequency network (SFN) may be implemented by TRP#1 (501_1) and TRP#2 (501_2).

[0254] Furthermore, when the downlink SDM method, downlink TDM method, or downlink FDM method is applied, the arrangement on the time-frequency axis of the "modulated signal(s) 701_1 transmitted by TRP#1 (of 501_1)" and the "modulated signal(s) 701_2 transmitted by TRP#2 (of 501_2)" is not limited to the examples of Figures 7A1, 7A2, 7A3, 7A4, 7B1, 7B2, 7C1, 7C2, and 7C3.

[0255] The "modulated signal(s) 701_1 transmitted by TRP#1 (of 501_1)" and the "modulated signal(s) 701_2 transmitted by TRP#2 (of 501_2)" may be in a (fully) coherent relationship, a partial coherent relationship, or a non-coherent relationship. Also, CJT (coherent joint transmission) or NCJT (non-coherent joint transmission) may be implemented.

[0256] An uplink SDM transmission method for "an uplink modulated signal transmitted by terminal 502 to TRP#1 of 501_1 and an uplink modulated signal transmitted by terminal 502 to TRP#2 of 501_2" will be described.

[0257] 8A1, 8A2, 8A3, and 8A4 show examples of arrangement on the time-frequency axis when transmitting "the uplink modulated signal transmitted by terminal 502 to TRP #1 of 501_1 and the uplink modulated signal transmitted by terminal 502 to TRP #2 of 501_2" using an uplink SDM method (e.g., fully overlapping, partially overlapping, etc.). In Fig. 8A1, 8A2, 8A3, and 8A4, the horizontal axis represents time and the vertical axis represents frequency.

[0258] Hereinafter, "uplink modulated signals transmitted by terminal 502 to TRP#1 of 501_1" will be referred to as "modulated signals(s) transmitted to TRP#1 (of 501_1)", and "uplink modulated signals transmitted by terminal 502 to TRP#2 of 501_2" will be referred to as "modulated signals(s) transmitted to TRP#2 (of 501_2)".

[0259] An example of an uplink SDM scheme is as follows:

[0260] Uplink SDM Method, Example A-1: ​​Assume that "modulated signal (group) 801_1 to be transmitted to TRP#1 (of 501_1)" exists at frequency AXX1 and time AX1 as shown in FIG. 8A1.

[0261] At this time, it is assumed that "modulated signal(s) 801_2 to be transmitted to TRP#2 (501_2)" exists at frequency AXX1 and time AX1 as shown in FIG. 8A1.

[0262] Uplink SDM Method, Example A-2: Assume that "modulated signal (group) 801_1 to be transmitted to TRP#1 (of 501_1)" exists at frequency AXX1 and time AX1 as shown in FIG. 8A1.

[0263] At this time, it is assumed that "modulated signal(s) 801_2 to be transmitted to TRP#2 (501_2)" exists at a part of frequency AXX1, time AX1, as shown in FIG. 8A2.

[0264] Uplink SDM Method, Example A-3: Assume that "modulated signal (group) 801_1 to be transmitted to TRP#1 (of 501_1)" exists at frequency AXX1 and time AX1 as shown in FIG. 8A1.

[0265] At this time, it is assumed that "modulated signal(s) 801_2 to be transmitted to TRP#2 (501_2)" exists at a part of frequency AXX1 and time AX1 as shown in FIG. 8A3.

[0266] Uplink SDM Method, Example A-4: Assume that "modulated signal (group) 801_1 to be transmitted to TRP#1 (of 501_1)" exists at frequency AXX1 and time AX1 as shown in FIG. 8A1.

[0267] At this time, it is assumed that "modulated signal(s) 801_2 to be transmitted to TRP#2 (501_2)" exists in part of frequency AXX1 and part of time AX1, as shown in FIG. 8A4.

[0268] Uplink SDM Method, Example A-5: Assume that "modulated signal (group) 801_1 to be transmitted to TRP#1 (of 501_1)" exists at frequency AXX1 and time AX1 as shown in FIG. 8A1.

[0269] In this case, the frequency and time used by "modulated signal(s) 801_2 transmitted to TRP#2 (501_2)" overlaps with part of frequency AXX1 and / or part of time AX1.

[0270] An uplink TDM transmission method for "an uplink modulated signal transmitted by terminal 502 to TRP#1 of 501_1 and an uplink modulated signal transmitted by terminal 502 to TRP#2 of 501_2" will be explained.

[0271] 8B1 and 8B2 show examples of arrangement on the time-frequency axis when transmitting "the uplink modulated signal transmitted by terminal 502 to TRP #1 of 501_1 and the uplink modulated signal transmitted by terminal 502 to TRP #2 of 501_2" using an uplink TDM scheme (e.g., tdmScheme, non-overlapping, etc.). In Fig. 8B1 and Fig. 8B2, the horizontal axis represents time and the vertical axis represents frequency.

[0272] An example of an uplink TDM scheme is as follows:

[0273] TDM Example A-1: ​​Assume that "modulated signal(s) 801_1 to be transmitted to TRP#1 (of 501_1)" exists at frequency BXX1 and time BX1 as shown in FIG. 8B1.

[0274] At this time, it is assumed that "modulated signal(s) 801_2 to be transmitted to TRP#2 (501_2)" exists at frequency BXX1 and time BX2 as shown in FIG. 8B1.

[0275] TDM Example A-2: Assume that "modulated signal(s) 801_1 to be transmitted to TRP#1 (of 501_1)" exists at frequency BXX1 and time BX1 as shown in FIG. 8B2.

[0276] At this time, it is assumed that "modulated signal(s) 801_2 to be transmitted to TRP#2 (501_2)" exists in part of frequency BXX1, time BX2, as shown in FIG. 8B2.

[0277] An uplink FDM transmission method for "the uplink modulated signal transmitted by terminal 502 to TRP#1 of 501_1 and the uplink modulated signal transmitted by terminal 502 to TRP#2 of 501_2" will be explained.

[0278] 8C1, 8C2, and 8C3 show examples of arrangement on the time-frequency axis when transmitting "the uplink modulated signal transmitted by terminal 502 to TRP #1 of 501_1 and the uplink modulated signal transmitted by terminal 502 to TRP #2 of 501_2" using an uplink FDM scheme (e.g., fdmScheme, non-overlapping, etc.). In Fig. 8C1, 8C2, and 8C3, the horizontal axis represents time and the vertical axis represents frequency.

[0279] An example of an uplink FDM scheme is as follows:

[0280] FDM Example A-1: ​​Assume that "modulated signal(s) 801_1 to be transmitted to TRP#1 (of 501_1)" exists at frequency CXX1 and time CX1 as shown in FIG. 8C1.

[0281] At this time, it is assumed that "modulated signal(s) 801_2 to be transmitted to TRP#2 (501_2)" exists at frequency CXX2 and time CX1 as shown in FIG. 8C1.

[0282] FDM Example A-2: Assume that "modulated signal(s) 801_1 to be transmitted to TRP#1 (of 501_1)" exists at frequency CXX1 and time CX1 as shown in FIG. 8C2.

[0283] At this time, it is assumed that "modulated signal(s) 801_2 to be transmitted to TRP#2 (501_2)" exists at a part of frequency CXX2 and time CX1 as shown in FIG. 8C2.

[0284] FDM Example A-3: Assume that "modulated signal(s) 801_1 to be transmitted to TRP#1 (of 501_1)" exists at frequency CXX1 and time CX1 as shown in FIG. 8C3.

[0285] At this time, it is assumed that "modulated signal(s) 801_2 to be transmitted to TRP#2 (501_2)" exists at frequency CXX2 and time CX2 as shown in FIG. 8C3.

[0286] FDM Example A-4: It is assumed that "modulated signal(s) 801_1 to be transmitted to TRP#1 (of 501_1)" exists at frequency CXX1 and time CX1.

[0287] At this time, it is assumed that "modulated signal (group) 801_2 transmitted to TRP#2 (501_2)" exists at frequency CXX2 and time CX2. Time CX1 and time CX2 partially overlap.

[0288] In addition, in the above description, "modulated signal (group) 801_1 to be transmitted to TRP#1 (of 501_1)" and "modulated signal (group) 801_2 to be transmitted to TRP#2 (of 501_2)" may contain the same data. Therefore, repetition may be applied to "modulated signal (group) 801_1 to be transmitted to TRP#1 (of 501_1)" and "modulated signal (group) 801_2 to be transmitted to TRP#2 (of 501_2)". Therefore, SFN may be implemented by terminal 502.

[0289] Furthermore, when the uplink SDM method, the uplink TDM method, or the uplink FDM method is applied, the arrangement on the time-frequency axis of the "modulated signal (group) 801_1 to be transmitted to TRP #1 (501_1)" and the "modulated signal (group) 801_2 to be transmitted to TRP #2 (501_2)" is not limited to the examples of Figures 8A1, 8A2, 8A3, 8A4, 8B1, 8B2, 8C1, 8C2, and 8C3.

[0290] The "modulated signal (group) 801_1 to be transmitted to TRP #1 (501_1)" and the "modulated signal (group) 801_2 to be transmitted to TRP #2 (501_2)" may be in a (fully) coherent relationship, a partial coherent relationship, or a non-coherent relationship. Also, CJT or NCJT may be performed.

[0291] An example of a method for transmitting an RS will be described.

[0292] As shown in Fig. 6A1, TRP #1 of 501_1 transmits RS (601_1). Also, as shown in Fig. 6A2, TRP #2 of 501_2 transmits RS (601_2). In this case, "RS in 601_1 transmitted by TRP #1 of 501_1" and "RS in 601_2 transmitted by TRP #2 of 501_2" may exist at the same time or at different times.

[0293] If they exist at the same time, it is preferable that the "RS in 601_1 transmitted by TRP#1 of 501_1" and the "RS in 601_2 transmitted by TRP#2 of 501_2" are orthogonal to each other or have low cross-correlation so that terminal 502 can identify them.

[0294] If they exist at different times, "RS in 601_1 transmitted by TRP#1 of 501_1" and "RS in 601_2 transmitted by TRP#2 of 501_2" may be the same signal or different signals.

[0295] As shown in Fig. 6A1, TRP #1 of 501_1 transmits RS (603_1). Also, as shown in Fig. 6A2, TRP #2 of 501_2 transmits RS (603_2). At this time, "RS in 603_1 transmitted by TRP #1 of 501_1" and "RS in 603_2 transmitted by TRP #2 of 501_2" may exist at the same time or at different times.

[0296] If they exist at the same time, it is preferable that the "RS in 603_1 transmitted by TRP#1 of 501_1" and the "RS in 603_2 transmitted by TRP#2 of 501_2" are orthogonal to each other or have low cross-correlation so that terminal 502 can identify them.

[0297] If they exist at different times, "RS in 603_1 transmitted by TRP#1 of 501_1" and "RS in 603_2 transmitted by TRP#2 of 501_2" may be the same signal or different signals.

[0298] As shown in Fig. 6B2, TRP #1 of 501_1 transmits RS (611_1). Also, as shown in Fig. 6C2, TRP #2 of 501_2 transmits RS (611_2). In this case, "RS in 611_1 transmitted by TRP #1 of 501_1" and "RS in 611_2 transmitted by TRP #2 of 501_2" may exist at the same time or at different times.

[0299] If they exist at the same time, it is preferable that the "RS in 611_1 transmitted by TRP#1 of 501_1" and the "RS in 611_2 transmitted by TRP#2 of 501_2" are orthogonal to each other or have low cross-correlation so that terminal 502 can distinguish them.

[0300] If they exist at different times, "RS in 601_1 transmitted by TRP#1 of 501_1" and "RS in 601_2 transmitted by TRP#2 of 501_2" may be the same signal or different signals.

[0301] As shown in Fig. 6B2, TRP #1 of 501_1 transmits RS (613_1). Also, as shown in Fig. 6C2, TRP #2 of 501_2 transmits RS (613_2). In this case, "RS in 613_1 transmitted by TRP #1 of 501_1" and "RS in 613_2 transmitted by TRP #2 of 501_2" may exist at the same time or at different times.

[0302] If they exist at the same time, it is preferable that the "RS in 613_1 transmitted by TRP#1 of 501_1" and the "RS in 613_2 transmitted by TRP#2 of 501_2" are orthogonal to each other or have low cross-correlation so that terminal 502 can distinguish them.

[0303] If they exist at different times, "RS in 613_1 transmitted by TRP#1 of 501_1" and "RS in 613_2 transmitted by TRP#2 of 501_2" may be the same signal or different signals.

[0304] In Fig. 6B3, the terminal 502 transmits "RS transmission 671_1" in response to TRP#1 of 501_1. The configuration of the RS at this time is shown in Fig. 9A1. In Fig. 9A1, the horizontal axis represents time.

[0305] In Figure 9A1, RS #1 of 901_1 is the RS transmitted at time T_1 from the transmitting / receiving panel antenna 1 based on the antenna module 591_1 in Figures 5C and 5D (or the transmitting panel antenna 1 based on the antenna module 106_1 in Figure 5A).

[0306] RS#2 of 901_2 is an RS transmitted at time T_2 from the transmitting / receiving panel antenna 2 based on the antenna module 591_2 in Figures 5C and 5D (or the transmitting panel antenna 2 based on the antenna module 106_2 in Figure 5A). RS#M of 901_M is an RS transmitted at time T_M from the transmitting / receiving panel antenna M based on the antenna module 591_M in Figures 5C and 5D (or the transmitting panel antenna M based on the antenna module 106_M in Figure 5A).

[0307] Therefore, RS#i of 901_i is the RS transmitted at time T_i from transmitting / receiving panel antenna i based on antenna module 591_i in Figures 5C and 5D (or transmitting panel antenna i based on antenna module 106_i in Figure 5A), where i is an integer between 1 and M.

[0308] As shown in Figure 6B3, TRP #1 of 501_1 in Figure 5C receives the RS with the configuration of Figure 9A1 (621_1). At this time, TRP #1 of 501_1 uses the RS structure of Figure 9A1 to search for RS #i of 901_i with good reception quality, for example. Then, TRP #1 of 501_1 transmits to terminal 502 a request to transmit a modulated signal using transmitting / receiving panel antenna i based on antenna module 591_i (or transmitting panel antenna i based on antenna module 106_i) corresponding to RS #i of 901_i with good reception quality (623_1). The subsequent processing has already been described, so description will be omitted. In addition, when TRP#1 of 501_1 transmits (623_1) to terminal 502 a request to transmit a modulated signal using a transmitting / receiving panel antenna i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i) corresponding to RS#i of 901_i with good reception quality, it may request transmission using multiple ``transmitting / receiving panel antennas i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i).''

[0309] Also, as shown in Figure 6B3, TRP #1 of 501_1 in Figure 5D receives the RS with the configuration of Figure 9A1 (621_1). At this time, TRP #1 of 501_1 uses the RS structure of Figure 9A1 to search for RS #i of 901_i with good reception quality, for example. Then, TRP #1 of 501_1 transmits to terminal 502 a request to transmit a modulated signal using transmitting / receiving panel antenna i based on antenna module 591_i (or transmitting panel antenna i based on antenna module 106_i) corresponding to RS #i of 901_i with good reception quality (623_1). The subsequent processing has already been explained, so explanation will be omitted. In addition, when TRP#1 of 501_1 transmits (623_1) to terminal 502 a request to transmit a modulated signal using a transmitting / receiving panel antenna i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i) corresponding to RS#i of 901_i with good reception quality, it may request transmission using multiple ``transmitting / receiving panel antennas i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i).''

[0310] In Fig. 6B3, terminal 502 transmits "RS transmission 671_1" in response to TRP#1 of 501_1. An example of the RS configuration at this time, which differs from that in Fig. 9A1, is shown in Fig. 9A2. In Fig. 9A2, the horizontal axis represents time.

[0311] In Figure 9A2, RS #1 of 901_1 is the RS transmitted at time T from the transmitting / receiving panel antenna 1 based on the antenna module 591_1 in Figures 5C and 5D (or the transmitting panel antenna 1 based on the antenna module 106_1 in Figure 5A).

[0312] RS#2 of 901_2 is an RS transmitted at time T from the transmitting / receiving panel antenna 2 based on the antenna module 591_2 in Figures 5C and 5D (or the transmitting panel antenna 2 based on the antenna module 106_2 in Figure 5A). RS#M of 901_M is an RS transmitted at time T from the transmitting / receiving panel antenna M based on the antenna module 591_M in Figures 5C and 5D (or the transmitting panel antenna M based on the antenna module 106_M in Figure 5A).

[0313] Therefore, RS#i of 901_i is the RS transmitted at time T from transmitting / receiving panel antenna i based on antenna module 591_i in Figures 5C and 5D (or transmitting panel antenna i based on antenna module 106_i in Figure 5A). Note that i is an integer between 1 and M. Furthermore, in RS#i of 901_i, for example, different RSs may be orthogonal signals or signals with small cross-correlation.

[0314] As shown in Figure 6B3, TRP #1 of 501_1 in Figure 5C receives the RS configured in Figure 9A2 (621_1). At this time, TRP #1 of 501_1 searches for, for example, RS #i of 901_i with good reception quality from the RSs configured in Figure 9A2. Then, TRP #1 of 501_1 transmits to terminal 502 a request to transmit a modulated signal using transmitting / receiving panel antenna i based on antenna module 591_i (or transmitting panel antenna i based on antenna module 106_i) corresponding to RS #i of 901_i with good reception quality (623_1). The subsequent processing has already been described, so description will be omitted. In addition, when TRP#1 of 501_1 transmits (623_1) to terminal 502 a request to transmit a modulated signal using a transmitting / receiving panel antenna i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i) corresponding to RS#i of 901_i with good reception quality, it may request transmission using multiple ``transmitting / receiving panel antennas i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i).''

[0315] Also, as shown in Figure 6B3, TRP #1 of 501_1 in Figure 5D receives the RS with the configuration of Figure 9A2 (621_1). At this time, TRP #1 of 501_1 searches for RS #i of 901_i with good reception quality, for example, from the RS structure with the configuration of Figure 9A2. Then, TRP #1 of 501_1 transmits to terminal 502 a request to transmit a modulated signal using transmitting / receiving panel antenna i based on antenna module 591_i (or transmitting panel antenna i based on antenna module 106_i) corresponding to RS #i of 901_i with good reception quality (623_1). The subsequent processing has already been explained, so explanation will be omitted. In addition, when TRP#1 of 501_1 transmits (623_1) to terminal 502 a request to transmit a modulated signal using a transmitting / receiving panel antenna i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i) corresponding to RS#i of 901_i with good reception quality, it may request transmission using multiple ``transmitting / receiving panel antennas i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i).''

[0316] In Fig. 6B3, terminal 502 transmits "RS transmission 671_1" in response to TRP#1 of 501_1. An example of the RS configuration at this time, which differs from Figs. 9A1 and 9A2, is shown in Fig. 9A3. In Fig. 9A3, the horizontal axis represents time.

[0317] In Figure 9A3, RS #1 of 901_1 is the RS transmitted at time Ta from the transmitting / receiving panel antenna 1 based on the antenna module 591_1 in Figures 5C and 5D (or the transmitting panel antenna 1 based on the antenna module 106_1 in Figure 5A).

[0318] RS#2 of 901_2 is an RS transmitted at time Tb from the transmitting / receiving panel antenna 2 based on the antenna module 591_2 in Figures 5C and 5D (or the transmitting panel antenna 2 based on the antenna module 106_2 in Figure 5A). RS#M of 901_M is an RS transmitted at time Ta or Tb from the transmitting / receiving panel antenna M based on the antenna module 591_M in Figures 5C and 5D (or the transmitting panel antenna M based on the antenna module 106_M in Figure 5A).

[0319] Therefore, when i = 2 × k - 1, RS #i of 901_i is the RS transmitted at time Ta from transmitting / receiving panel antenna i based on antenna module 591_i in Figures 5C and 5D (or transmitting panel antenna i based on antenna module 106_i in Figure 5A). Note that k is an integer equal to or greater than 1. In RS #i of 901_i when i = 2 × k - 1, for example, different RSs may be orthogonal signals or signals with small cross-correlation.

[0320] Furthermore, when i = 2 × h, RS #i of 901_i is the RS transmitted at time Tb from transmitting / receiving panel antenna i based on antenna module 591_i in Figures 5C and 5D (or transmitting panel antenna i based on antenna module 106_i in Figure 5A). Note that h is an integer equal to or greater than 1. In RS #i of 901_i when i = 2 × h, for example, different RSs may be orthogonal signals or signals with small cross-correlation.

[0321] As shown in Figure 6B3, TRP #1 of 501_1 in Figure 5C receives the RS configured in Figure 9A3 (621_1). At this time, TRP #1 of 501_1 searches for, for example, RS #i of 901_i with good reception quality from the RSs configured in Figure 9A3. Then, TRP #1 of 501_1 transmits to terminal 502 a request to transmit a modulated signal using transmitting / receiving panel antenna i based on antenna module 591_i (or transmitting panel antenna i based on antenna module 106_i) corresponding to RS #i of 901_i with good reception quality (623_1). The subsequent processing has already been described, so description will be omitted. In addition, when TRP#1 of 501_1 transmits (623_1) to terminal 502 a request to transmit a modulated signal using a transmitting / receiving panel antenna i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i) corresponding to RS#i of 901_i with good reception quality, it may request transmission using multiple ``transmitting / receiving panel antennas i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i).''

[0322] Also, as shown in Figure 6B3, TRP #1 of 501_1 in Figure 5D receives the RS with the configuration of Figure 9A3 (621_1). At this time, TRP #1 of 501_1 searches for RS #i of 901_i with good reception quality, for example, from the RS structure with the configuration of Figure 9A3. Then, TRP #1 of 501_1 transmits to terminal 502 a request to transmit a modulated signal using transmitting / receiving panel antenna i based on antenna module 591_i (or transmitting panel antenna i based on antenna module 106_i) corresponding to RS #i of 901_i with good reception quality (623_1). The subsequent processing has already been explained, so explanation will be omitted. In addition, when TRP#1 of 501_1 transmits (623_1) to terminal 502 a request to transmit a modulated signal using a transmitting / receiving panel antenna i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i) corresponding to RS#i of 901_i with good reception quality, it may request transmission using multiple ``transmitting / receiving panel antennas i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i).''

[0323] 6B3, the terminal 502 performs "RS transmission 671_1" for TRP#1 of 501_1. The RS configuration method at this time is not limited to the examples of FIGS. 9A1, 9A2, and 9A3, and the RS#i of 901_i may be time-divided and transmitted, or the RS#i of 901_i may be transmitted without time-dividing.

[0324] 6B3, the terminal 502 performs "RS transmission 671_1" for TRP#1 of 501_1. As a method of configuring the RS at this time, the RS#i of 901_i may be transmitted by frequency division, or the RS#i of 901_i may be transmitted by time division and / or frequency division.

[0325] By doing the above, it is possible to select a transmitting panel antenna based on a suitable antenna module, which can improve the data transmission speed during communication and also improve the data reception quality.

[0326] In Fig. 6C3, the terminal 502 transmits "RS transmission 671_2" in response to TRP#2 of 501_2. The configuration of the RS at this time is shown in Fig. 9A1. In Fig. 9A1, the horizontal axis represents time.

[0327] In Figure 9A1, RS #1 of 901_1 is the RS transmitted at time T_1 from the transmitting / receiving panel antenna 1 based on the antenna module 591_1 in Figures 5C and 5D (or the transmitting panel antenna 1 based on the antenna module 106_1 in Figure 5A).

[0328] RS#2 of 901_2 is an RS transmitted at time T_2 from the transmitting / receiving panel antenna 2 based on the antenna module 591_2 in Figures 5C and 5D (or the transmitting panel antenna 2 based on the antenna module 106_2 in Figure 5A). RS#M of 901_M is an RS transmitted at time T_M from the transmitting / receiving panel antenna M based on the antenna module 591_M in Figures 5C and 5D (or the transmitting panel antenna M based on the antenna module 106_M in Figure 5A).

[0329] Therefore, RS#i of 901_i is the RS transmitted at time T_i from transmitting / receiving panel antenna i based on antenna module 591_i in Figures 5C and 5D (or transmitting panel antenna i based on antenna module 106_i in Figure 5A), where i is an integer between 1 and M.

[0330] As shown in Figure 6C3, TRP #2 of 501_2 in Figure 5C receives the RS with the configuration of Figure 9A1 (621_2). At this time, TRP #2 of 501_2 uses the RS structure of Figure 9A1 to search for RS #i of 901_i with good reception quality, for example. Then, TRP #2 of 501_2 transmits to terminal 502 a request to transmit a modulated signal using transmitting / receiving panel antenna i based on antenna module 591_i (or transmitting panel antenna i based on antenna module 106_i) corresponding to RS #i of 901_i with good reception quality (623_2). The subsequent processing has already been explained, so explanation will be omitted. In addition, when TRP#2 of 501_2 transmits (623_2) to terminal 502 a request to transmit a modulated signal using a transmitting / receiving panel antenna i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i) corresponding to RS#i of 901_i with good reception quality, it may request transmission using multiple ``transmitting / receiving panel antennas i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i).''

[0331] Also, as shown in Figure 6B3, TRP #2 of 501_2 in Figure 5D receives the RS with the configuration of Figure 9A1 (621_2). At this time, TRP #2 of 501_2 uses the RS structure of Figure 9A1 to search for RS #i of 901_i with good reception quality, for example. Then, TRP #2 of 501_2 transmits to terminal 502 a request to transmit a modulated signal using transmitting / receiving panel antenna i based on antenna module 591_i (or transmitting panel antenna i based on antenna module 106_i) corresponding to RS #i of 901_i with good reception quality (623_2). The subsequent processing has already been explained, so explanation will be omitted. In addition, when TRP#2 of 501_2 transmits (623_2) to terminal 502 a request to transmit a modulated signal using a transmitting / receiving panel antenna i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i) corresponding to RS#i of 901_i with good reception quality, it may request transmission using multiple ``transmitting / receiving panel antennas i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i).''

[0332] In Fig. 6C3, the terminal 502 performs "RS transmission 671_2" in response to TRP#2 of 501_2. An example of the RS configuration at this time, which is different from that in Fig. 9A1, is shown in Fig. 9A2. In Fig. 9A2, the horizontal axis represents time.

[0333] In Figure 9A2, RS #1 of 901_1 is the RS transmitted at time T from the transmitting / receiving panel antenna 1 based on the antenna module 591_1 in Figures 5C and 5D (or the transmitting panel antenna 1 based on the antenna module 106_1 in Figure 5A).

[0334] RS#2 of 901_2 is an RS transmitted at time T from the transmitting / receiving panel antenna 2 based on the antenna module 591_2 in Figures 5C and 5D (or the transmitting panel antenna 2 based on the antenna module 106_2 in Figure 5A). RS#M of 901_M is an RS transmitted at time T from the transmitting / receiving panel antenna M based on the antenna module 591_M in Figures 5C and 5D (or the transmitting panel antenna M based on the antenna module 106_M in Figure 5A).

[0335] Therefore, RS#i of 901_i is the RS transmitted at time T from transmitting / receiving panel antenna i based on antenna module 591_i in Figures 5C and 5D (or transmitting panel antenna i based on antenna module 106_i in Figure 5A). Note that i is an integer between 1 and M. Furthermore, in RS#i of 901_i, for example, different RSs may be orthogonal signals or signals with small cross-correlation.

[0336] As shown in Figure 6C3, TRP #2 of 501_2 in Figure 5C receives the RS configured in Figure 9A2 (621_2). At this time, TRP #2 of 501_2 searches for, for example, RS #i of 901_i with good reception quality from the RSs configured in Figure 9A2. Then, TRP #2 of 501_2 transmits to terminal 502 a request to transmit a modulated signal using transmitting / receiving panel antenna i based on antenna module 591_i (or transmitting panel antenna i based on antenna module 106_i) corresponding to RS #i of 901_i with good reception quality (623_2). The subsequent processing has already been described, so description will be omitted. In addition, when TRP#2 of 501_2 transmits (623_2) to terminal 502 a request to transmit a modulated signal using a transmitting / receiving panel antenna i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i) corresponding to RS#i of 901_i with good reception quality, it may request transmission using multiple ``transmitting / receiving panel antennas i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i).''

[0337] Also, as shown in Figure 6C3, TRP #2 of 501_2 in Figure 5D receives the RS with the configuration of Figure 9A2 (621_2). At this time, TRP #2 of 501_2 searches for RS #i of 901_i with good reception quality, for example, from the RS structure with the configuration of Figure 9A2. Then, TRP #2 of 501_2 transmits to terminal 502 a request to transmit a modulated signal using transmitting / receiving panel antenna i based on antenna module 591_i (or transmitting panel antenna i based on antenna module 106_i) corresponding to RS #i of 901_i with good reception quality (623_2). The subsequent processing has already been explained, so explanation will be omitted. In addition, when TRP#2 of 501_2 transmits (623_2) to terminal 502 a request to transmit a modulated signal using a transmitting / receiving panel antenna i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i) corresponding to RS#i of 901_i with good reception quality, it may request transmission using multiple ``transmitting / receiving panel antennas i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i).''

[0338] In Fig. 6C3, terminal 502 transmits "RS transmission 671_2" in response to TRP#2 of 501_2. An example of the RS configuration at this time, which differs from Figs. 9A1 and 9A2, is shown in Fig. 9A3. In Fig. 9A3, the horizontal axis represents time.

[0339] In Figure 9A3, RS #1 of 901_1 is the RS transmitted at time Ta from the transmitting / receiving panel antenna 1 based on the antenna module 591_1 in Figures 5C and 5D (or the transmitting panel antenna 1 based on the antenna module 106_1 in Figure 5A).

[0340] RS#2 of 901_2 is an RS transmitted at time Tb from the transmitting / receiving panel antenna 2 based on the antenna module 591_2 in Figures 5C and 5D (or the transmitting panel antenna 2 based on the antenna module 106_2 in Figure 5A). RS#M of 901_M is an RS transmitted at time Ta or Tb from the transmitting / receiving panel antenna M based on the antenna module 591_M in Figures 5C and 5D (or the transmitting panel antenna M based on the antenna module 106_M in Figure 5A).

[0341] Therefore, when i = 2 × k - 1, RS #i of 901_i is the RS transmitted at time Ta from transmitting / receiving panel antenna i based on antenna module 591_i in Figures 5C and 5D (or transmitting panel antenna i based on antenna module 106_i in Figure 5A). Note that k is an integer equal to or greater than 1. In RS #i of 901_i when i = 2 × k - 1, for example, different RSs may be orthogonal signals or signals with small cross-correlation.

[0342] Furthermore, when i = 2 × h, RS #i of 901_i is the RS transmitted at time Tb from transmitting / receiving panel antenna i based on antenna module 591_i in Figures 5C and 5D (or transmitting panel antenna i based on antenna module 106_i in Figure 5A). Note that h is an integer equal to or greater than 1. In RS #i of 901_i when i = 2 × h, for example, different RSs may be orthogonal signals or signals with small cross-correlation.

[0343] As shown in Figure 6C3, TRP #2 of 501_2 in Figure 5C receives the RS configured in Figure 9A3 (621_2). At this time, TRP #2 of 501_2 searches for, for example, RS #i of 901_i with good reception quality from the RSs configured in Figure 9A3. Then, TRP #2 of 501_2 transmits to terminal 502 a request to transmit a modulated signal using transmitting / receiving panel antenna i based on antenna module 591_i (or transmitting panel antenna i based on antenna module 106_i) corresponding to RS #i of 901_i with good reception quality (623_2). The subsequent processing has already been explained, so explanation will be omitted. In addition, when TRP#2 of 501_2 transmits (623_2) to terminal 502 a request to transmit a modulated signal using a transmitting / receiving panel antenna i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i) corresponding to RS#i of 901_i with good reception quality, it may request transmission using multiple ``transmitting / receiving panel antennas i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i).''

[0344] Also, as shown in Figure 6C3, TRP #2 of 501_2 in Figure 5D receives the RS configured in Figure 9A3 (621_2). At this time, TRP #2 of 501_2 searches for RS #i of 901_i with good reception quality, for example, from the RS structure configured in Figure 9A3. Then, TRP #2 of 501_2 transmits to terminal 502 a request to transmit a modulated signal using transmitting / receiving panel antenna i based on antenna module 591_i (or transmitting panel antenna i based on antenna module 106_i) corresponding to RS #i of 901_i with good reception quality (623_2). The subsequent processing has already been explained, so explanation will be omitted. In addition, when TRP#2 of 501_2 transmits (623_2) to terminal 502 a request to transmit a modulated signal using a transmitting / receiving panel antenna i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i) corresponding to RS#i of 901_i with good reception quality, it may request transmission using multiple ``transmitting / receiving panel antennas i based on the antenna module of 591_i (or a transmitting panel antenna i based on the antenna module of 106_i).''

[0345] 6C3, the terminal 502 performs "RS transmission 671_2" for TRP#2 of 501_2. The RS configuration method at this time is not limited to the examples of FIGS. 9A1, 9A2, and 9A3, and the RS#i of 901_i may be time-divided and transmitted, or the RS#i of 901_i may be transmitted without time-dividing.

[0346] 6C3, the terminal 502 transmits "RS transmission 671_2" to TRP#2 of 501_2. As a method for configuring the RS at this time, the RS #i of 901_i may be frequency-divided and transmitted, or the RS #i of 901_i may be time-divided and / or frequency-divided and transmitted.

[0347] By doing the above, it is possible to select a transmitting panel antenna based on a suitable antenna module, which can improve the data transmission speed during communication and also improve the data reception quality.

[0348] In Fig. 6B3, the terminal 502 transmits "RS transmission 672_1" in response to TRP#1 of 501_1. The configuration of the RS at this time is shown in Fig. 9B1. In Fig. 9B1, the horizontal axis represents time.

[0349] The transmitting / receiving panel antenna 1 based on antenna module 591_1 in Figures 5C and 5D (or the transmitting panel antenna 1 based on antenna module 106_1 in Figure 5A) is assumed to be able to select (or generate) Z1 antenna modules. Note that Z1 is an integer greater than or equal to 1, or an integer greater than or equal to 2. In this case, the RS transmitted by terminal 502 using antenna module 1 of the transmitting / receiving panel antenna 1 based on antenna module 591_1 (or the transmitting panel antenna 1 based on antenna module 106_1 in Figure 5A) is assumed to be RS$1_1.

[0350] The RS transmitted by terminal 502 using antenna module 2 of transmitting / receiving panel antenna 1 based on antenna module 591_1 (or transmitting panel antenna 1 based on antenna module 106_1 in FIG. 5A) is defined as RS$1_2. The RS transmitted by terminal 502 using antenna module Z1 of transmitting / receiving panel antenna 1 based on antenna module 591_1 (or transmitting panel antenna 1 based on antenna module 106_1 in FIG. 5A) is defined as RS$1_Z1.

[0351] Using a similar definition, it can be expressed as follows. It is assumed that the transmitting / receiving panel antenna p based on the antenna module 591_p in Figures 5C and 5D (or the transmitting panel antenna p based on the antenna module 106_p in Figure 5A) can select (or generate) Zp antenna modules. Note that Zp is an integer equal to or greater than 1, or an integer equal to or greater than 2. Also, it is assumed that p is an integer equal to or greater than 1 and equal to or less than M. In this case, the RS transmitted by the terminal 502 using the antenna module q of the transmitting / receiving panel antenna p based on the antenna module 591_p (or the transmitting panel antenna p based on the antenna module 106_p in Figure 5A) is represented as RS$p_q. It is assumed that q is an integer equal to or greater than 1 and equal to or less than Zp.

[0352] 5C and 5D, the terminal 502 determines to transmit a signal to TRP#1 of 501_1 using the transmitting / receiving panel antenna 1 based on the antenna module 591_1 (or the transmitting panel antenna 1 based on the antenna module 106_1 in FIG. 5A). (This point is explained in the description of FIG. 6B3.)

[0353] Therefore, based on the RS configuration in Fig. 9B1, terminal 502 transmits RS $1_1 of 951_1_1 at time t_1. Terminal 502 transmits RS $1_2 of 951_1_2 at time t_2. ... Terminal 502 transmits RS $1_Z1 of 951_1_Z1 at time t_Z1.

[0354] As shown in Figure 6B3, TRP #1 of 501_1 in Figure 5C receives the above RS (624_1). At this time, TRP #1 of 501_1 searches for RS $1_q of 951_1_q, for example, which has good reception quality. Then, TRP #1 of 501_1 transmits to terminal 502 a request to transmit a modulated signal using antenna module q of transmitting / receiving panel antenna 1 based on antenna module 591_1 (or transmitting panel antenna 1 based on antenna module 106_1 in Figure 5A), which corresponds to RS $1_q of 951_1_q, which has good reception quality (625_1). The subsequent processing has already been described, so description will be omitted.

[0355] In addition, when TRP#1 of 501_1 transmits (625_1) to terminal 502 a request to transmit a modulated signal using antenna module q of transmitting / receiving panel antenna 1 based on antenna module 591_1 (or transmitting panel antenna 1 based on antenna module 106_1 in Figure 5A) corresponding to RS$1_q of 951_1_q with good reception quality, it may request transmission using multiple antenna modules q of transmitting / receiving panel antenna 1 based on antenna module 591_1 (or transmitting panel antenna 1 based on antenna module 106_1 in Figure 5A).

[0356] In Figure 5C, terminal 502 transmits a modulated signal to TRP #1 of 501_1 using a transmitting / receiving panel antenna 1 based on antenna module 591_1 (or a transmitting panel antenna 1 based on antenna module 106_1 in Figure 5A), but this is not limited to this, and terminal 502 may also transmit a modulated signal to TRP #1 of 501_1 using a transmitting / receiving panel antenna V based on antenna module 591_V (or a transmitting panel antenna V based on antenna module 106_V in Figure 5A) (V is any integer between 1 and M). In this case, "Terminal 502 transmits RS$V_1 of 951_V_1 at time t_1. Terminal 502 transmits RS$V_2 of 951_V_2 at time t_2. ... Terminal 502 transmits RS$V_ZV of 951_V_Z1 at time t_ZV."

[0357] Terminal 502 may transmit a modulated signal to TRP#1 of 501_1 using multiple "transmitting and receiving panel antennas V based on antenna modules 591_V (or transmitting panel antennas V based on antenna modules 106_V in FIG. 5A)." In this case, terminal 502 transmits RS$V_q of 951_V_q as described above.

[0358] Also, as shown in Figure 6B3, TRP #1 of 501_1 in Figure 5D receives the above RS (624_1). At this time, TRP #1 of 501_1 searches for RS $1_q of 951_1_q, for example, which has good reception quality. Then, TRP #1 of 501_1 transmits to terminal 502 a request to transmit a modulated signal using antenna module q of the transmitting / receiving panel antenna 1 based on the antenna module of 591_1, which corresponds to RS $1_q of 951_1_q, which has good reception quality (625_1). The subsequent processing has already been explained, so explanation will be omitted.

[0359] 5D, terminal 502 transmits a modulated signal to TRP #1 of 501_1 using a transmitting / receiving panel antenna 1 based on the antenna module of 591_1, but this is not limited to this, and terminal 502 may transmit a modulated signal to TRP #1 of 501_1 using a transmitting / receiving panel antenna W (W is any integer between 1 and M) based on the antenna module of 591_W. In this case, "Terminal 502 transmits RS$W_1 of 951_W_1 at time t_1. Terminal 502 transmits RS$W_2 of 951_W_2 at time t_2. ... Terminal 502 transmits RS$W_ZW of 951_W_Z1 at time t_ZW."

[0360] Terminal 502 may transmit a modulated signal to TRP#1 of 501_1 using multiple "transmitting and receiving panel antennas V based on antenna modules 591_V (or transmitting panel antennas V based on antenna modules 106_V in FIG. 5A)." In this case, terminal 502 transmits RS$V_q of 951_V_q as described above.

[0361] In Fig. 6B3, terminal 502 transmits "RS transmission 672_1" in response to TRP#1 of 501_1. An example of the RS configuration at this time, which differs from that in Fig. 9B1, is shown in Fig. 9B2. In Fig. 9B2, the horizontal axis represents time.

[0362] The transmitting / receiving panel antenna p based on the antenna module 591_p in Figures 5C and 5D (or the transmitting panel antenna p based on the antenna module 106_p in Figure 5A) is capable of selecting (or generating) Zp antenna modules. Zp is an integer equal to or greater than 1, or an integer equal to or greater than 2. Also, p is an integer equal to or greater than 1 and equal to or less than M. In this case, the RS transmitted by terminal 502 using antenna module q of the transmitting / receiving panel antenna p based on the antenna module 591_p (or the transmitting panel antenna p based on the antenna module 106_p in Figure 5A) is denoted by RS$p_q. Here, q is an integer equal to or greater than 1 and equal to or less than Zp.

[0363] 5C and 5D, the terminal 502 determines to transmit a signal to TRP#1 of 501_1 using the transmitting / receiving panel antenna 1 based on the antenna module 591_1 (or the transmitting panel antenna 1 based on the antenna module 106_1 in FIG. 5A). (This point is explained in the description of FIG. 6B3.)

[0364] Therefore, based on the RS configuration in Fig. 9B2, terminal 502 transmits RS $1_1 of 951_1_1 at time t. Terminal 502 transmits RS $1_2 of 951_1_2 at time t. ... Terminal 502 transmits RS $1_Z1 of 951_1_Z1 at time t.

[0365] As shown in Figure 6B3, TRP #1 of 501_1 in Figure 5C receives the above RS (624_1). At this time, TRP #1 of 501_1 searches for RS $1_q of 951_1_q, for example, which has good reception quality. Then, TRP #1 of 501_1 transmits to terminal 502 a request to transmit a modulated signal using antenna module q of transmitting / receiving panel antenna 1 based on antenna module 591_1 (or transmitting panel antenna 1 based on antenna module 106_1 in Figure 5A), which corresponds to RS $1_q of 951_1_q, which has good reception quality (625_1). The subsequent processing has already been described, so description will be omitted.

[0366] In addition, when TRP#1 of 501_1 transmits (625_1) to terminal 502 a request to transmit a modulated signal using antenna module q of transmitting / receiving panel antenna 1 based on antenna module 591_1 (or transmitting panel antenna 1 based on antenna module 106_1 in Figure 5A) corresponding to RS$1_q of 951_1_q with good reception quality, it may request transmission using multiple antenna modules q of transmitting / receiving panel antenna 1 based on antenna module 591_1 (or transmitting panel antenna 1 based on antenna module 106_1 in Figure 5A).

[0367] In Figure 5C, terminal 502 transmits a modulated signal to TRP #1 of 501_1 using a transmitting / receiving panel antenna 1 based on antenna module 591_1 (or a transmitting panel antenna 1 based on antenna module 106_1 in Figure 5A), but this is not limited to this. Terminal 502 may also transmit a modulated signal to TRP #1 of 501_1 using a transmitting / receiving panel antenna V based on antenna module 591_V (or a transmitting panel antenna V based on antenna module 106_V in Figure 5A) (V is an integer between 1 and M). In this case, "terminal 502 transmits RS$V_1 of 951_V_1 at time t_1. Terminal 502 transmits RS$V_2 of 951_V_2 at time t_2. ... Terminal 502 transmits RS$V_ZV of 951_V_Z1 at time t_ZV." In RS$V_q of 951_V_1, for example, different RSs may be orthogonal signals or signals with small cross-correlation.

[0368] Terminal 502 may transmit a modulated signal to TRP#1 of 501_1 using multiple "transmitting and receiving panel antennas V based on antenna modules 591_V (or transmitting panel antennas V based on antenna modules 106_V in FIG. 5A)." In this case, terminal 502 transmits RS$V_q of 951_V_q as described above.

[0369] Also, as shown in Figure 6B3, TRP #1 of 501_1 in Figure 5D receives the above RS (624_1). At this time, TRP #1 of 501_1 searches for RS $1_q of 951_1_q, for example, which has good reception quality. Then, TRP #1 of 501_1 transmits to terminal 502 a request to transmit a modulated signal using antenna module q of the transmitting / receiving panel antenna 1 based on the antenna module of 591_1, which corresponds to RS $1_q of 951_1_q, which has good reception quality (625_1). The subsequent processing has already been explained, so explanation will be omitted.

[0370] 5D, terminal 502 transmits a modulated signal to TRP #1 of 501_1 using a transmitting / receiving panel antenna 1 based on the antenna module of 591_1, but this is not limited to this, and terminal 502 may transmit a modulated signal to TRP #1 of 501_1 using a transmitting / receiving panel antenna W (W is an integer between 1 and M) based on the antenna module of 591_W. In this case, in RS$W_q of 951_W_1 such that "Terminal 502 transmits RS$W_1 of 951_W_1 at time t_1. Terminal 502 transmits RS$W_2 of 951_W_2 at time t_2. ... Terminal 502 transmits RS$W_ZW of 951_W_Z1 at time t_ZW," for example, different RSs may be orthogonal signals or signals with small cross-correlation.

[0371] Terminal 502 may transmit a modulated signal to TRP#1 of 501_1 using multiple "transmitting and receiving panel antennas V based on antenna modules 591_V (or transmitting panel antennas V based on antenna modules 106_V in FIG. 5A)." In this case, terminal 502 transmits RS$V_q of 951_V_q as described above.

[0372] In Fig. 6B3, terminal 502 transmits "RS transmission 672_1" in response to TRP#1 of 501_1. An example of the RS configuration at this time, which differs from those in Figs. 9B1 and 9B2, is shown in Fig. 9B3. In Fig. 9B3, the horizontal axis represents time.

[0373] The transmitting / receiving panel antenna p based on the antenna module 591_p in Figures 5C and 5D (or the transmitting panel antenna p based on the antenna module 106_p in Figure 5A) is capable of selecting (or generating) Zp antenna modules. Zp is an integer equal to or greater than 1, or an integer equal to or greater than 2. Also, p is an integer equal to or greater than 1 and equal to or less than M. In this case, the RS transmitted by terminal 502 using antenna module q of the transmitting / receiving panel antenna p based on the antenna module 591_p (or the transmitting panel antenna p based on the antenna module 106_p in Figure 5A) is denoted by RS$p_q. Here, q is an integer equal to or greater than 1 and equal to or less than Zp.

[0374] 5C and 5D, the terminal 502 determines to transmit a signal to TRP#1 of 501_1 using the transmitting / receiving panel antenna 1 based on the antenna module 591_1 (or the transmitting panel antenna 1 based on the antenna module 106_1 in FIG. 5A). (This point is explained in the description of FIG. 6B3.)

[0375] Therefore, based on the RS configuration in Fig. 9B3, terminal 502 transmits RS $1_1 of 951_1_1 at time ta. Terminal 502 transmits RS $1_2 of 951_1_2 at time tb. ... Terminal 502 transmits RS $1_Z1 of 951_1_Z1 at time ta or tb.

[0376] Therefore, when q=2×k−1, RS $1_q of 951_1_q is the RS transmitted at time ta, where k is an integer equal to or greater than 1.

[0377] Furthermore, when q=2×h, RS$1_q of 951_1_q is an RS transmitted at time tb, where h is an integer of 1 or more.

[0378] As shown in Figure 6B3, TRP #1 of 501_1 in Figure 5C receives the above RS (624_1). At this time, TRP #1 of 501_1 searches for RS $1_q of 951_1_q, for example, which has good reception quality. Then, TRP #1 of 501_1 transmits to terminal 502 a request to transmit a modulated signal using antenna module q of transmitting / receiving panel antenna 1 based on antenna module 591_1 (or transmitting panel antenna 1 based on antenna module 106_1 in Figure 5A), which corresponds to RS $1_q of 951_1_q, which has good reception quality (625_1). The subsequent processing has already been described, so description will be omitted.

[0379] In addition, when TRP#1 of 501_1 transmits (625_1) to terminal 502 a request to transmit a modulated signal using antenna module q of transmitting / receiving panel antenna 1 based on antenna module 591_1 (or transmitting panel antenna 1 based on antenna module 106_1 in Figure 5A) corresponding to RS$1_q of 951_1_q with good reception quality, it may request transmission using multiple antenna modules q of transmitting / receiving panel antenna 1 based on antenna module 591_1 (or transmitting panel antenna 1 based on antenna module 106_1 in Figure 5A).

[0380] 5C, terminal 502 transmits a modulated signal to TRP#1 of 501_1 using a transmitting / receiving panel antenna 1 based on antenna module 591_1 (or a transmitting panel antenna 1 based on antenna module 106_1 in FIG. 5A), but this is not limited to this. Terminal 502 may also transmit a modulated signal to TRP#1 of 501_1 using a transmitting / receiving panel antenna V based on antenna module 591_V (or a transmitting panel antenna V based on antenna module 106_V in FIG. 5A) (V is any integer between 1 and M). In this case, "Terminal 502 transmits RS$V_1 of 951_V_1 at time t_1. Terminal 502 transmits RS$V_2 of 951_V_2 at time t_2. ... Terminal 502 transmits RS$V_ZV of 951_V_Z1 at time t_ZV."

[0381] Terminal 502 may transmit a modulated signal to TRP#1 of 501_1 using multiple "transmitting and receiving panel antennas V based on antenna modules 591_V (or transmitting panel antennas V based on antenna modules 106_V in FIG. 5A)." In this case, terminal 502 transmits RS$V_q of 951_V_q as described above.

[0382] Also, as shown in Figure 6B3, TRP #1 of 501_1 in Figure 5D receives the above RS (624_1). At this time, TRP #1 of 501_1 searches for RS $1_q of 951_1_q, for example, which has good reception quality. Then, TRP #1 of 501_1 transmits to terminal 502 a request to transmit a modulated signal using antenna module q of the transmitting / receiving panel antenna 1 based on the antenna module of 591_1, which corresponds to RS $1_q of 951_1_q, which has good reception quality (625_1). The subsequent processing has already been explained, so explanation will be omitted.

[0383] 5D, terminal 502 transmits a modulated signal to TRP #1 of 501_1 using a transmitting / receiving panel antenna 1 based on the antenna module of 591_1, but this is not limited to this, and terminal 502 may transmit a modulated signal to TRP #1 of 501_1 using a transmitting / receiving panel antenna W (W is any integer between 1 and M) based on the antenna module of 591_W. In this case, "Terminal 502 transmits RS$W_1 of 951_W_1 at time t_1. Terminal 502 transmits RS$W_2 of 951_W_2 at time t_2. ... Terminal 502 transmits RS$W_ZW of 951_W_Z1 at time t_ZW."

[0384] Terminal 502 may transmit a modulated signal to TRP#1 of 501_1 using multiple "transmitting and receiving panel antennas V based on antenna modules 591_V (or transmitting panel antennas V based on antenna modules 106_V in FIG. 5A)." In this case, terminal 502 transmits RS$V_q of 951_V_q as described above.

[0385] 6B3, terminal 502 transmits "RS transmission 672_1" in response to TRP#1 of 501_1. The RS configuration method in this case is not limited to the examples in FIGS. 9B1, 9B2, and 9B3, and RS$p_q may be transmitted by time division, or RS$p_q may be transmitted without time division.

[0386] 6B3, the terminal 502 transmits "RS transmission 672_1" to TRP #1 of 501_1. As a method for configuring the RS at this time, RS $p_q may be transmitted by frequency division, or RS $p_q may be transmitted by time division and / or frequency division.

[0387] By doing as described above, it is possible to select a suitable antenna module, which in turn makes it possible to improve the data transmission speed during communication and also to obtain the effect of improving the data reception quality.

[0388] In Fig. 6C3, the terminal 502 transmits "RS transmission 672_2" in response to TRP#2 of 501_2. The RS configuration at this time is shown in Fig. 9B1. In Fig. 9B1, the horizontal axis represents time.

[0389] The transmitting / receiving panel antenna p based on the antenna module 591_p in Figures 5C and 5D (or the transmitting panel antenna p based on the antenna module 106_p in Figure 5A) is capable of selecting (or generating) Zp antenna modules. Zp is an integer equal to or greater than 1, or an integer equal to or greater than 2. Also, p is an integer equal to or greater than 1 and equal to or less than M. In this case, the RS transmitted by terminal 502 using antenna module q of the transmitting / receiving panel antenna p based on the antenna module 591_p (or the transmitting panel antenna p based on the antenna module 106_p in Figure 5A) is denoted by RS$p_q. Here, q is an integer equal to or greater than 1 and equal to or less than Zp.

[0390] In Fig. 5C, the terminal 502 determines to transmit a signal to TRP #2 of 501_2 using the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 (or the transmitting panel antenna 2 based on the antenna module of 106_2 in Fig. 5A). (This point is explained in the description of Fig. 6C3.)

[0391] Therefore, based on the RS configuration in Fig. 9B1, terminal 502 transmits RS $2_1 of 951_2_1 at time t_1. Terminal 502 transmits RS $2_2 of 951_2_2 at time t_2. ... Terminal 502 transmits RS $2_Z2 of 951_2_Z2 at time t_Z2.

[0392] As shown in Figure 6C3, TRP #2 of 501_2 in Figure 5C receives the above RS (624_2). At this time, TRP #2 of 501_2 searches for RS $2_q of 951_2_q, for example, which has good reception quality. Then, TRP #2 of 501_2 transmits to terminal 502 a request to transmit a modulated signal using antenna module q of the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 (or the transmitting panel antenna 2 based on the antenna module of 106_2 in Figure 5A), which corresponds to RS $2_q of 951_2_q, which has good reception quality (625_2). The subsequent processing has already been described, so description will be omitted.

[0393] In addition, when TRP#2 of 501_2 transmits (625_2) to terminal 502 a request to transmit a modulated signal using antenna module q of the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 (or the transmitting panel antenna 2 based on the antenna module of 106_2 in Figure 5A) corresponding to RS$2_q of 951_2_q with good reception quality, it may request transmission using multiple antenna modules q of the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 (or the transmitting panel antenna 2 based on the antenna module of 106_2 in Figure 5A).

[0394] In Figure 5C, terminal 502 transmits a modulated signal to TRP #2 of 501_2 using a transmitting / receiving panel antenna 2 based on antenna module 591_2 (or a transmitting panel antenna 2 based on antenna module 106_2 in Figure 5A), but this is not limited to this. Terminal 502 may also transmit a modulated signal to TRP #2 of 501_2 using a transmitting / receiving panel antenna V based on antenna module 591_V (or a transmitting panel antenna V based on antenna module 106_V in Figure 5A) (V is any integer between 1 and M). In this case, "Terminal 502 transmits RS$V_1 of 951_V_1 at time t_1. Terminal 502 transmits RS$V_2 of 951_V_2 at time t_2. ... Terminal 502 transmits RS$V_ZV of 951_V_Z1 at time t_ZV."

[0395] Terminal 502 may transmit a modulated signal to TRP#2 of 501_2 using multiple "transmitting and receiving panel antennas V based on antenna modules 591_V (or transmitting panel antennas V based on antenna modules 106_V in FIG. 5A)." In this case, terminal 502 transmits RS$V_q of 951_V_q as described above.

[0396] In Fig. 5D, the terminal 502 determines to transmit a signal to TRP #2 of 501_2 using the transmitting / receiving panel antenna 2 based on the antenna module of 591_2. (This point is explained in the description of Fig. 6C3.)

[0397] Therefore, based on the RS configuration in Fig. 9B1, terminal 502 transmits RS $2_1 of 951_2_1 at time t_1. Terminal 502 transmits RS $2_2 of 951_2_2 at time t_2. ... Terminal 502 transmits RS $2_Z2 of 951_2_Z2 at time t_Z2.

[0398] As shown in Figure 6C3, TRP #2 of 501_2 in Figure 5D receives the above RS (624_2). At this time, TRP #2 of 501_2 searches for RS $2_q of 951_2_q, for example, which has good reception quality. Then, TRP #2 of 501_2 transmits to terminal 502 a request to transmit a modulated signal using antenna module q of the transmitting / receiving panel antenna 2 based on the antenna module of 591_2, which corresponds to RS $2_q of 951_2_q, which has good reception quality (625_2). The subsequent processing has already been explained, so explanation will be omitted.

[0399] In addition, when TRP#2 of 501_2 transmits (625_2) to terminal 502 a request to transmit a modulated signal using antenna module q of the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 (or the transmitting panel antenna 2 based on the antenna module of 106_2 in Figure 5A) corresponding to RS$2_q of 951_2_q with good reception quality, it may request transmission using multiple antenna modules q of the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 (or the transmitting panel antenna 2 based on the antenna module of 106_2 in Figure 5A).

[0400] 5D, terminal 502 transmits a modulated signal to TRP #2 of 501_2 using a transmitting / receiving panel antenna 2 based on antenna module 591_2, but this is not limited to this, and terminal 502 may transmit a modulated signal to TRP #2 of 501_2 using a transmitting / receiving panel antenna W (W is any integer between 1 and M) based on antenna module 591_W. In this case, "Terminal 502 transmits RS$W_1 of 951_W_1 at time t_1. Terminal 502 transmits RS$W_2 of 951_W_2 at time t_2. ... Terminal 502 transmits RS$W_ZW of 951_W_Z1 at time t_ZW."

[0401] Terminal 502 may transmit a modulated signal to TRP#2 of 501_2 using multiple "transmitting and receiving panel antennas V based on antenna modules 591_V (or transmitting panel antennas V based on antenna modules 106_V in FIG. 5A)." In this case, terminal 502 transmits RS$V_q of 951_V_q as described above.

[0402] In Fig. 6C3, the terminal 502 performs "RS transmission 672_2" in response to TRP#2 of 501_2. An example of the RS configuration at this time, which differs from that in Fig. 9B1, is shown in Fig. 9B2. In Fig. 9B2, the horizontal axis represents time.

[0403] The transmitting / receiving panel antenna p based on the antenna module 591_p in Figures 5C and 5D (or the transmitting panel antenna p based on the antenna module 106_p in Figure 5A) is capable of selecting (or generating) Zp antenna modules. Zp is an integer equal to or greater than 1, or an integer equal to or greater than 2. Also, p is an integer equal to or greater than 1 and equal to or less than M. In this case, the RS transmitted by terminal 502 using antenna module q of the transmitting / receiving panel antenna p based on the antenna module 591_p (or the transmitting panel antenna p based on the antenna module 106_p in Figure 5A) is denoted by RS$p_q. Here, q is an integer equal to or greater than 1 and equal to or less than Zp.

[0404] In Fig. 5C, the terminal 502 determines to transmit a signal to TRP #2 of 501_2 using the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 (or the transmitting panel antenna 2 based on the antenna module of 106_2 in Fig. 5A). (This point is explained in the description of Fig. 6C3.)

[0405] Therefore, based on the RS configuration in Fig. 9B2, terminal 502 transmits RS $2_1 of 951_2_1 at time t. Terminal 502 transmits RS $2_2 of 951_2_2 at time t. ... Terminal 502 transmits RS $2_Z2 of 951_2_Z2 at time t.

[0406] As shown in Figure 6C3, TRP #2 of 501_2 in Figure 5C receives the above RS (624_2). At this time, TRP #2 of 501_2 searches for RS $2_q of 951_2_q, for example, which has good reception quality. Then, TRP #2 of 501_2 transmits to terminal 502 a request to transmit a modulated signal using antenna module q of the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 (or the transmitting panel antenna 2 based on the antenna module of 106_2 in Figure 5A), which corresponds to RS $2_q of 951_2_q, which has good reception quality (625_2). The subsequent processing has already been described, so description will be omitted.

[0407] In addition, when TRP#2 of 501_2 transmits (625_2) to terminal 502 a request to transmit a modulated signal using antenna module q of the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 (or the transmitting panel antenna 2 based on the antenna module of 106_2 in Figure 5A) corresponding to RS$2_q of 951_2_q with good reception quality, it may request transmission using multiple antenna modules q of the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 (or the transmitting panel antenna 2 based on the antenna module of 106_2 in Figure 5A).

[0408] In Figure 5C, terminal 502 transmits a modulated signal to TRP #2 of 501_2 using a transmitting / receiving panel antenna 2 based on antenna module 591_2 (or a transmitting panel antenna 2 based on antenna module 106_2 in Figure 5A), but this is not limited to this. Terminal 502 may also transmit a modulated signal to TRP #2 of 501_2 using a transmitting / receiving panel antenna V based on antenna module 591_V (or a transmitting panel antenna V based on antenna module 106_V in Figure 5A) (V is any integer between 1 and M). In this case, "Terminal 502 transmits RS$V_1 of 951_V_1 at time t_1. Terminal 502 transmits RS$V_2 of 951_V_2 at time t_2. ... Terminal 502 transmits RS$V_ZV of 951_V_Z1 at time t_ZV." In RS$V_q of 951_V_1, for example, different RSs may be orthogonal signals or signals with small cross-correlation.

[0409] Terminal 502 may transmit a modulated signal to TRP#2 of 501_2 using multiple "transmitting and receiving panel antennas V based on antenna modules 591_V (or transmitting panel antennas V based on antenna modules 106_V in FIG. 5A)." In this case, terminal 502 transmits RS$V_q of 951_V_q as described above.

[0410] In Fig. 5D, the terminal 502 determines to transmit a signal to TRP #2 of 501_2 using the transmitting / receiving panel antenna 2 based on the antenna module of 591_2. (This point is explained in the description of Fig. 6C3.)

[0411] Therefore, based on the RS configuration in Fig. 9B2, terminal 502 transmits RS $2_1 of 951_2_1 at time t. Terminal 502 transmits RS $2_2 of 951_2_2 at time t. ... Terminal 502 transmits RS $2_Z2 of 951_2_Z2 at time t.

[0412] As shown in Figure 6C3, TRP #2 of 501_2 in Figure 5D receives the above RS (624_2). At this time, TRP #2 of 501_2 searches for RS $2_q of 951_2_q, for example, which has good reception quality. Then, TRP #2 of 501_2 transmits to terminal 502 a request to transmit a modulated signal using antenna module q of the transmitting / receiving panel antenna 2 based on the antenna module of 591_2, which corresponds to RS $2_q of 951_2_q, which has good reception quality (625_2). The subsequent processing has already been explained, so explanation will be omitted.

[0413] In addition, when TRP#2 of 501_2 transmits (625_2) to terminal 502 a request to transmit a modulated signal using antenna module q of the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 (or the transmitting panel antenna 2 based on the antenna module of 106_2 in Figure 5A) corresponding to RS$2_q of 951_2_q with good reception quality, it may request transmission using multiple antenna modules q of the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 (or the transmitting panel antenna 2 based on the antenna module of 106_2 in Figure 5A).

[0414] In Figure 5D, terminal 502 transmits a modulated signal to TRP #2 of 501_2 using a transmitting / receiving panel antenna 2 based on antenna module 591_2, but this is not limited to this. Terminal 502 may also transmit a modulated signal to TRP #2 of 501_2 using a transmitting / receiving panel antenna W (W is an integer between 1 and M) based on antenna module 591_W. In this case, "Terminal 502 transmits RS $W_1 of 951_W_1 at time t_1. Terminal 502 transmits RS $W_2 of 951_W_2 at time t_2. ... Terminal 502 transmits RS $W_ZW of 951_W_Z1 at time t_ZW." In RS $W_q of 951_W_1, for example, different RSs may be orthogonal signals or signals with small cross-correlation.

[0415] Terminal 502 may transmit a modulated signal to TRP#2 of 501_2 using multiple "transmitting and receiving panel antennas V based on antenna modules 591_V (or transmitting panel antennas V based on antenna modules 106_V in FIG. 5A)." In this case, terminal 502 transmits RS$V_q of 951_V_q as described above.

[0416] In Fig. 6C3, terminal 502 transmits "RS transmission 672_2" in response to TRP#2 of 501_2. An example of the RS configuration at this time, which differs from those in Figs. 9B1 and 9B2, is shown in Fig. 9B3. In Fig. 9B3, the horizontal axis represents time.

[0417] The transmitting / receiving panel antenna p based on the antenna module 591_p in Figures 5C and 5D (or the transmitting panel antenna p based on the antenna module 106_p in Figure 5A) is capable of selecting (or generating) Zp antenna modules. Zp is an integer equal to or greater than 1, or an integer equal to or greater than 2. Also, p is an integer equal to or greater than 1 and equal to or less than M. In this case, the RS transmitted by terminal 502 using antenna module q of the transmitting / receiving panel antenna p based on the antenna module 591_p (or the transmitting panel antenna p based on the antenna module 106_p in Figure 5A) is denoted by RS$p_q. Here, q is an integer equal to or greater than 1 and equal to or less than Zp.

[0418] In Fig. 5C, the terminal 502 determines to transmit a signal to TRP #2 of 501_2 using the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 (or the transmitting panel antenna 2 based on the antenna module of 106_2 in Fig. 5A). (This point is explained in the description of Fig. 6C3.)

[0419] Therefore, based on the RS configuration in Fig. 9B3, terminal 502 transmits RS $2_1 of 951_2_1 at time ta. Terminal 502 transmits RS $2_2 of 951_2_2 at time tb. ... Terminal 502 transmits RS $2_Z2 of 951_2_Z2 at time ta or tb.

[0420] Therefore, when q=2×k−1, RS $2_q of 951_2_q is the RS transmitted at time ta, where k is an integer equal to or greater than 1.

[0421] Furthermore, when q=2×h, RS $2_q of 951_2_q is an RS transmitted at time tb, where h is an integer of 1 or more.

[0422] As shown in Figure 6C3, TRP #2 of 501_2 in Figure 5C receives the above RS (624_2). At this time, TRP #2 of 501_2 searches for RS $2_q of 951_2_q, for example, which has good reception quality. Then, TRP #2 of 501_2 transmits to terminal 502 a request to transmit a modulated signal using antenna module q of the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 (or the transmitting panel antenna 2 based on the antenna module of 106_2 in Figure 5A), which corresponds to RS $2_q of 951_2_q, which has good reception quality (625_2). The subsequent processing has already been described, so description will be omitted.

[0423] In addition, when TRP#2 of 501_2 transmits (625_2) to terminal 502 a request to transmit a modulated signal using antenna module q of the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 (or the transmitting panel antenna 2 based on the antenna module of 106_2 in Figure 5A) corresponding to RS$2_q of 951_2_q with good reception quality, it may request transmission using multiple antenna modules q of the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 (or the transmitting panel antenna 2 based on the antenna module of 106_2 in Figure 5A).

[0424] In Figure 5C, terminal 502 transmits a modulated signal to TRP #2 of 501_2 using a transmitting / receiving panel antenna 2 based on antenna module 591_2 (or a transmitting panel antenna 2 based on antenna module 106_2 in Figure 5A), but this is not limited to this. Terminal 502 may also transmit a modulated signal to TRP #2 of 501_2 using a transmitting / receiving panel antenna V based on antenna module 591_V (or a transmitting panel antenna V based on antenna module 106_V in Figure 5A) (V is any integer between 1 and M). In this case, "Terminal 502 transmits RS$V_1 of 951_V_1 at time t_1. Terminal 502 transmits RS$V_2 of 951_V_2 at time t_2. ... Terminal 502 transmits RS$V_ZV of 951_V_Z1 at time t_ZV."

[0425] Terminal 502 may transmit a modulated signal to TRP#2 of 501_2 using multiple "transmitting and receiving panel antennas V based on antenna modules 591_V (or transmitting panel antennas V based on antenna modules 106_V in FIG. 5A)." In this case, terminal 502 transmits RS$V_q of 951_V_q as described above.

[0426] In Fig. 5D, the terminal 502 determines to transmit a signal to TRP #2 of 501_2 using the transmitting / receiving panel antenna 2 based on the antenna module of 591_2. (This point is explained in the description of Fig. 6C3.)

[0427] Therefore, based on the RS configuration in Fig. 9B3, terminal 502 transmits RS $2_1 of 951_2_1 at time ta. Terminal 502 transmits RS $2_2 of 951_2_2 at time tb. ... Terminal 502 transmits RS $2_Z2 of 951_2_Z2 at time ta or tb.

[0428] Therefore, when q=2×k−1, RS $2_q of 951_2_q is the RS transmitted at time ta, where k is an integer equal to or greater than 1.

[0429] Furthermore, when q=2×h, RS $2_q of 951_2_q is an RS transmitted at time tb, where h is an integer of 1 or more.

[0430] Also, as shown in Figure 6B3, TRP #2 of 501_2 in Figure 5D receives the above RS (624_2). At this time, TRP #2 of 501_2 searches for RS $2_q of 951_2_q, for example, which has good reception quality. Then, TRP #2 of 501_2 transmits to terminal 502 a request to transmit a modulated signal using antenna module q of the transmitting / receiving panel antenna 2 based on the antenna module of 591_2, which corresponds to RS $2_q of 951_2_q, which has good reception quality (625_2). The subsequent processing has already been explained, so explanation will be omitted.

[0431] In addition, when TRP#2 of 501_2 transmits (625_2) to terminal 502 a request to transmit a modulated signal using antenna module q of the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 (or the transmitting panel antenna 2 based on the antenna module of 106_2 in Figure 5A) corresponding to RS$2_q of 951_2_q with good reception quality, it may request transmission using multiple antenna modules q of the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 (or the transmitting panel antenna 2 based on the antenna module of 106_2 in Figure 5A).

[0432] 5D, terminal 502 transmits a modulated signal to TRP #2 of 501_2 using a transmitting / receiving panel antenna 2 based on antenna module 591_2, but this is not limited to this, and terminal 502 may transmit a modulated signal to TRP #2 of 501_2 using a transmitting / receiving panel antenna W (W is any integer between 1 and M) based on antenna module 591_W. In this case, "Terminal 502 transmits RS$W_1 of 951_W_1 at time t_1. Terminal 502 transmits RS$W_2 of 951_W_2 at time t_2. ... Terminal 502 transmits RS$W_ZW of 951_W_Z1 at time t_ZW."

[0433] Terminal 502 may transmit a modulated signal to TRP#2 of 501_2 using multiple "transmitting and receiving panel antennas V based on antenna modules 591_V (or transmitting panel antennas V based on antenna modules 106_V in FIG. 5A)." In this case, terminal 502 transmits RS$V_q of 951_V_q as described above.

[0434] 6C3, terminal 502 transmits "RS transmission 672_2" to TRP#2 of 501_2. The RS configuration method at this time is not limited to the examples in FIGS. 9B1, 9B2, and 9B3, and RS$p_q may be transmitted by time division, or RS$p_q may be transmitted without time division.

[0435] 6C3, the terminal 502 transmits "RS transmission 672_2" to TRP #2 of 501_2. As a method for configuring the RS at this time, RS $p_q may be transmitted by frequency division, or RS $p_q may be transmitted by time division and / or frequency division.

[0436] By doing as described above, it is possible to select a suitable antenna module, which in turn makes it possible to improve the data transmission speed during communication and also to obtain the effect of improving the data reception quality.

[0437] Another example will now be described.

[0438] Examples of communication modes of terminals having the configurations of Figures 1A, 1B, and 1C, such as downlink multi(multiple)-TRP, uplink multi(multiple)-TRP, and STxMP, will be described below in terms of examples different from those of Figures 5A, 5B, 5C, and 5D.

[0439] 10A shows an example of communication between "terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" and "TRP #1 of 501_1 and TRP #2 of 501_2." In FIG. 10A, components that operate in the same manner as those in FIGS. 1A, 1B, 1C, and 5A are assigned the same numbers. Note that "TRP #1 of 501_1 and TRP #2 of 501_2" are referred to as TRPs, but they may also be base stations. Therefore, for example, TRP #1 of 501_1 may be base station #1, and TRP #2 of 501_2 may be base station #2. In the following description, they will be referred to as TRPs.

[0440] "Terminal 502 having the configuration of Figures 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmit signals) to TRP #1 of 501_1 using a transmit panel antenna 1 based on the antenna module of 106_1.

[0441] Furthermore, "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmit signals) to TRP #2 of 501_2 using a transmit panel antenna 2 based on the antenna module of 106_2.

[0442] "Terminal 502 having the configuration of Figures 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmit signals) to TRP #1 of 501_1 using a transmit panel antenna 3 based on the antenna module of 106_3.

[0443] "Terminal 502 having the configuration of Figures 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmit signals) to TRP #2 of 501_2 using a transmit panel antenna 4 based on the antenna module of 106_4.

[0444] The method by which the "terminal 502 having the configurations of Figures 1A, 1B, and 1C" transmits one or more modulated signals (one or more transmission signals) has already been described, so the description will be omitted. Therefore, a destination TRP is set for each transmitting panel antenna based on an antenna module. In the main form, one destination TRP is set for each transmitting panel antenna based on an antenna module. However, it may be possible to set two or more destination TRPs for each transmitting panel antenna based on an antenna module.

[0445] In addition, a transmitting panel antenna based on multiple antenna modules may be used to transmit one or more modulated signals (one or more transmit signals) to TRP#1 of 501_1 (or TRP#2 of 501_2).

[0446] In Figure 10A, "terminal 502 having the configurations of Figures 1A, 1B, and 1C" transmits modulated signals (transmission signals) to two TRPs, but the same can be implemented when "terminal 502 having the configurations of Figures 1A, 1B, and 1C" transmits modulated signals (transmission signals) to two or more TRPs.

[0447] As shown in Figure 10A, the terminal 502 can improve data transmission efficiency by transmitting a modulated signal to the TRP for each transmitting panel antenna based on the antenna module, and by using the antenna module, the effect of improving the data reception quality at the TRP can be obtained.

[0448] 10B shows an example of communication between "terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" and "TRP#1 of 501_1 and TRP#2 of 501_2." In FIG. 10B, components that operate in the same manner as in FIGS. 1A, 1B, 1C, and 5A are assigned the same numbers. Note that "TRP#1 of 501_1 and TRP#2 of 501_2" are referred to as TRPs, but they may also be base stations. Therefore, for example, TRP#1 of 501_1 may be base station #1, and TRP#2 of 501_2 may be base station #2. In the following description, they will be referred to as TRPs.

[0449] "Terminal 502 having the configurations of Figures 1A, 1B, and 1C" will receive one or more modulated signals (one or more transmission signals) transmitted by TRP #1 of 501_1 using a receiving panel antenna 1 based on the antenna module of 151_1.

[0450] Furthermore, "terminal 502 having the configurations of Figures 1A, 1B, and 1C" will receive one or more modulated signals (one or more transmission signals) transmitted by TRP#2 of 501_2 using a receiving panel antenna 3 based on the antenna module of 151_3.

[0451] "Terminal 502 having the configurations of Figures 1A, 1B, and 1C" will receive one or more modulated signals (one or more transmission signals) transmitted by TRP #1 of 501_1 using a receiving panel antenna 2 based on the antenna module of 151_2.

[0452] "Terminal 502 having the configurations of Figures 1A, 1B, and 1C" will receive one or more modulated signals (one or more transmission signals) transmitted by TRP#2 of 501_2 using a receiving panel antenna 4 based on the antenna module of 151_4.

[0453] The method by which the "terminal 502 having the configurations of Figures 1A, 1B, and 1C" receives one or more modulated signals (one or more transmitted signals) has already been described, so the description will be omitted. Therefore, the "terminal 502 having the configurations of Figures 1A, 1B, and 1C" sets a TRP to be a communication partner for each receiving panel antenna based on an antenna module. In the main form, the "terminal 502 having the configurations of Figures 1A, 1B, and 1C" sets one TRP to be a communication partner for each receiving panel antenna based on an antenna module. However, the "terminal 502 having the configurations of Figures 1A, 1B, and 1C" may be able to set two or more TRPs to be a communication partner for each receiving panel antenna based on an antenna module.

[0454] In addition, a receiving panel antenna based on multiple antenna modules may be used to receive one or more modulated signals (one or more transmission signals) transmitted by TRP#1 of 501_1 (or TRP#2 of 501_2).

[0455] In Figure 10B, "terminal 502 having the configurations of Figures 1A, 1B, and 1C" receives modulated signals (transmission signals) transmitted by two TRPs, but the same implementation is possible when "terminal 502 having the configurations of Figures 1A, 1B, and 1C" receives modulated signals (transmission signals) transmitted by two or more TRPs.

[0456] As shown in Figure 10B, the terminal 502 can improve data transmission efficiency by receiving a modulated signal from the TRP for each receiving panel antenna based on the antenna module, and by using the antenna module, the terminal can achieve the effect of improving the data reception quality.

[0457] FIG. 10C1 shows an example of communication between "terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" and "TRP#1 of 501_1 and TRP#2 of 501_2."

[0458] 1A, 1B, and 1C, it was explained that "when M = m holds, the 'transmitting panel antenna i based on antenna module 106_i' and the 'receiving panel antenna i based on antenna module 151_i' may be shared, and may be configured as a 'transmitting and receiving panel antenna i based on an antenna module' and a 'transmitting and receiving antenna i' (note that i is an integer between 1 and M (or m) inclusive)." In this case, what corresponds to the 'transmitting and receiving panel antenna i based on antenna module 591_i' in FIG. 10C1. Therefore, terminal 502 is equipped with transmit and receive panel antennas 1 based on antenna module 591_1 to M based on antenna module 591_M.

[0459] In Fig. 10C1, "TRP #1 of 501_1 and TRP #2 of 501_2" are referred to as TRPs, but they may also be base stations. Therefore, for example, TRP #1 of 501_1 may be base station #1, and TRP #2 of 501_2 may be base station #2. In the following description, they will be referred to as TRPs.

[0460] "Terminal 502 having the configuration of Figures 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmit signals) to TRP #1 of 501_1 using a transmit / receive panel antenna 1 based on the antenna module of 591_1.

[0461] Furthermore, "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmission signals) to TRP #2 of 501_2 using a transmitting / receiving panel antenna 2 based on the antenna module of 591_2.

[0462] "Terminal 502 having the configuration of Figures 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmit signals) to TRP #1 of 501_1 using a transmit / receive panel antenna 3 based on the antenna module of 591_3.

[0463] "Terminal 502 having the configuration of Figures 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmit signals) to TRP #2 of 501_2 using a transmit / receive panel antenna 4 based on the antenna module of 591_4.

[0464] The method by which "terminal 502 having the configurations of Figures 1A, 1B, and 1C" transmits one or more modulated signals (one or more transmission signals) has already been explained, so explanation will be omitted.

[0465] In Figure 10C1, "terminal 502 having the configurations of Figures 1A, 1B, and 1C" transmits modulated signals (transmission signals) to two TRPs, but the same can be implemented when "terminal 502 having the configurations of Figures 1A, 1B, and 1C" transmits modulated signals (transmission signals) to two or more TRPs.

[0466] "Terminal 502 having the configurations of Figures 1A, 1B, and 1C" will receive one or more modulated signals (one or more transmission signals) transmitted by TRP #1 of 501_1 using a transmitting / receiving panel antenna 1 based on the antenna module of 591_1.

[0467] Furthermore, "terminal 502 having the configurations of Figures 1A, 1B, and 1C" will receive one or more modulated signals (one or more transmission signals) transmitted by TRP#2 of 501_2 using a receiving panel antenna 2 based on the antenna module of 151_2.

[0468] The method by which "terminal 502 having the configurations of Figures 1A, 1B, and 1C" receives one or more modulated signals (one or more transmitted signals) has already been explained, so explanation will be omitted.

[0469] In this way, "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will communicate (perform transmission and reception) with TRP #1 of 501_1 using transmitting and receiving panel antenna 1 based on antenna module 591_1, and "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will communicate (perform transmission and reception) with TRP #2 of 501_2 using transmitting and receiving panel antenna 2 based on antenna module 591_2.

[0470] Furthermore, "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmit signals) to TRP #1 of 501_1 using a transmit / receive panel antenna 3 based on antenna module 591_3, and "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmit signals) to TRP #2 of 501_2 using a transmit / receive panel antenna 4 based on antenna module 591_4.

[0471] Therefore, the "terminal 502 having the configurations of Figures 1A, 1B, and 1C" has a transmitting / receiving panel antenna based on an antenna module for communicating with the TRP. Also, the "terminal 502 having the configurations of Figures 1A, 1B, and 1C" has a transmitting / receiving panel antenna based on an antenna module for transmitting a modulated signal to the TRP.

[0472] In addition, communication (transmission and reception) with TRP#1 of 501_1 (or TRP#2 of 501_2) may be performed using a transmitting and receiving panel antenna based on multiple antenna modules.

[0473] In Figure 10C1, "terminal 502 having the configurations of Figures 1A, 1B, and 1C" receives modulated signals (transmission signals) transmitted by two TRPs, but similar implementation is possible when "terminal 502 having the configurations of Figures 1A, 1B, and 1C" receives modulated signals (transmission signals) transmitted by two or more TRPs.

[0474] As shown in Figure 10C1, the terminal 502 can improve data transmission efficiency by communicating with the TRP for each transmitting and receiving panel antenna based on the antenna module, and by using the antenna module, the effect of improving data reception quality can be obtained at the terminal and TRP.

[0475] FIG. 10C2 shows an example of communication between "terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" and "TRP#1 of 501_1 and TRP#2 of 501_2."

[0476] 1A, 1B, and 1C, it was explained that "when M = m holds, the 'transmitting panel antenna i based on antenna module 106_i' and the 'receiving panel antenna i based on antenna module 151_i' may be shared, and may be configured as a 'transmitting and receiving panel antenna i based on an antenna module' and a 'transmitting and receiving antenna i' (note that i is an integer between 1 and M (or m) inclusive)." In this case, what corresponds to the 'transmitting and receiving panel antenna i based on antenna module 591_i' in FIG. 10C2. Therefore, terminal 502 is equipped with transmit and receive panel antennas 1 based on antenna module 591_1 to M based on antenna module 591_M.

[0477] In Fig. 10C2, "TRP #1 of 501_1 and TRP #2 of 501_2" are referred to as TRPs, but they may also be base stations. Therefore, for example, TRP #1 of 501_1 may be base station #1, and TRP #2 of 501_2 may be base station #2. In the following description, they will be referred to as TRPs.

[0478] "Terminal 502 having the configuration of Figures 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmit signals) to TRP #1 of 501_1 using a transmit / receive panel antenna 1 based on the antenna module of 591_1.

[0479] Furthermore, "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmission signals) to TRP #2 of 501_2 using a transmitting / receiving panel antenna 2 based on the antenna module of 591_2.

[0480] The method by which "terminal 502 having the configurations of Figures 1A, 1B, and 1C" transmits one or more modulated signals (one or more transmission signals) has already been explained, so explanation will be omitted.

[0481] In Figure 10C2, "terminal 502 having the configuration of Figures 1A, 1B, and 1C" transmits a modulated signal (transmission signal) to two TRPs, but the same can be implemented when "terminal 502 having the configuration of Figures 1A, 1B, and 1C" transmits a modulated signal (transmission signal) to two or more TRPs.

[0482] "Terminal 502 having the configurations of Figures 1A, 1B, and 1C" will receive one or more modulated signals (one or more transmission signals) transmitted by TRP #1 of 501_1 using a transmitting / receiving panel antenna 1 based on the antenna module of 591_1.

[0483] Furthermore, "terminal 502 having the configurations of Figures 1A, 1B, and 1C" will receive one or more modulated signals (one or more transmission signals) transmitted by TRP#2 of 501_2 using a receiving panel antenna 2 based on the antenna module of 151_2.

[0484] "Terminal 502 having the configurations of Figures 1A, 1B, and 1C" will receive one or more modulated signals (one or more transmission signals) transmitted by TRP #1 of 501_1 using a transmitting / receiving panel antenna 3 based on the antenna module of 591_3.

[0485] "Terminal 502 having the configurations of Figures 1A, 1B, and 1C" will receive one or more modulated signals (one or more transmission signals) transmitted by TRP#2 of 501_2 using a receiving panel antenna 4 based on the antenna module of 151_4.

[0486] The method by which "terminal 502 having the configurations of Figures 1A, 1B, and 1C" receives one or more modulated signals (one or more transmitted signals) has already been explained, so explanation will be omitted.

[0487] In this way, "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will communicate (perform transmission and reception) with TRP #1 of 501_1 using transmitting and receiving panel antenna 1 based on antenna module 591_1, and "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will communicate (perform transmission and reception) with TRP #2 of 501_2 using transmitting and receiving panel antenna 2 based on antenna module 591_2.

[0488] Furthermore, "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will receive one or more modulated signals (one or more transmission signals) transmitted by TRP #1 of 501_1 using a transmitting / receiving panel antenna 3 based on antenna module 591_3, and "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will receive one or more modulated signals (one or more transmission signals) transmitted by TRP #2 of 501_2 using a transmitting / receiving panel antenna 4 based on antenna module 591_4.

[0489] Therefore, the "terminal 502 having the configurations of Figures 1A, 1B, and 1C" has a transmitting / receiving panel antenna based on an antenna module for communicating with the TRP. Also, the "terminal 502 having the configurations of Figures 1A, 1B, and 1C" has a transmitting / receiving panel antenna based on an antenna module for receiving modulated signals transmitted by the TRP.

[0490] In addition, communication (transmission and reception) with TRP#1 of 501_1 (or TRP#2 of 501_2) may be performed using a transmitting and receiving panel antenna based on multiple antenna modules.

[0491] In Figure 10C2, "terminal 502 having the configuration of Figures 1A, 1B, and 1C" receives modulated signals (transmission signals) transmitted by two TRPs, but similar implementation is possible when "terminal 502 having the configuration of Figures 1A, 1B, and 1C" receives modulated signals (transmission signals) transmitted by two or more TRPs.

[0492] As shown in Figure 10C2, the terminal 502 can improve data transmission efficiency by communicating with the TRP for each transmitting and receiving panel antenna based on the antenna module, and by using the antenna module, the effect of improving data reception quality can be obtained at the terminal and TRP.

[0493] FIG. 10C3 shows an example of communication between "terminal 502 having the configurations of FIGS. 1A, 1B, and 1C" and "TRP#1 of 501_1 and TRP#2 of 501_2."

[0494] 1A, 1B, and 1C, it was explained that "when M = m holds, the 'transmitting panel antenna i based on antenna module 106_i' and the 'receiving panel antenna i based on antenna module 151_i' may be shared, and may be configured as a 'transmitting and receiving panel antenna i based on an antenna module' and a 'transmitting and receiving antenna i' (note that i is an integer between 1 and M (or m) inclusive)." In this case, what corresponds to the 'transmitting and receiving panel antenna i based on antenna module 591_i' in FIG. 10C3. Therefore, terminal 502 is equipped with transmit and receive panel antennas 1 based on antenna module 591_1 to M based on antenna module 591_M.

[0495] In Fig. 10C3, "TRP #1 of 501_1 and TRP #2 of 501_2" are referred to as TRPs, but they may also be base stations. Therefore, for example, TRP #1 of 501_1 may be base station #1, and TRP #2 of 501_2 may be base station #2. In the following description, they will be referred to as TRPs.

[0496] "Terminal 502 having the configuration of Figures 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmit signals) to TRP #1 of 501_1 using a transmit / receive panel antenna 1 based on the antenna module of 591_1.

[0497] Furthermore, "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmission signals) to TRP #2 of 501_2 using a transmitting / receiving panel antenna 2 based on the antenna module of 591_2.

[0498] "Terminal 502 having the configuration of Figures 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmit signals) to TRP #1 of 501_1 using a transmit / receive panel antenna 3 based on the antenna module of 591_3.

[0499] "Terminal 502 having the configuration of Figures 1A, 1B, and 1C" will transmit one or more modulated signals (one or more transmit signals) to TRP #2 of 501_2 using a transmit / receive panel antenna 4 based on the antenna module of 591_4.

[0500] The method by which "terminal 502 having the configurations of Figures 1A, 1B, and 1C" transmits one or more modulated signals (one or more transmission signals) has already been explained, so explanation will be omitted.

[0501] In Figure 10C3, "terminal 502 having the configuration of Figures 1A, 1B, and 1C" transmits a modulated signal (transmission signal) to two TRPs, but the same can be implemented when "terminal 502 having the configuration of Figures 1A, 1B, and 1C" transmits a modulated signal (transmission signal) to two or more TRPs.

[0502] "Terminal 502 having the configurations of Figures 1A, 1B, and 1C" will receive one or more modulated signals (one or more transmission signals) transmitted by TRP #1 of 501_1 using a transmitting / receiving panel antenna 1 based on the antenna module of 591_1.

[0503] Furthermore, "terminal 502 having the configurations of Figures 1A, 1B, and 1C" will receive one or more modulated signals (one or more transmission signals) transmitted by TRP#2 of 501_2 using a receiving panel antenna 2 based on the antenna module of 151_2.

[0504] "Terminal 502 having the configurations of Figures 1A, 1B, and 1C" will receive one or more modulated signals (one or more transmission signals) transmitted by TRP #1 of 501_1 using a transmitting / receiving panel antenna 3 based on the antenna module of 591_3.

[0505] "Terminal 502 having the configurations of Figures 1A, 1B, and 1C" will receive one or more modulated signals (one or more transmission signals) transmitted by TRP#2 of 501_2 using a receiving panel antenna 4 based on the antenna module of 151_4.

[0506] The method by which "terminal 502 having the configurations of Figures 1A, 1B, and 1C" receives one or more modulated signals (one or more transmitted signals) has already been explained, so explanation will be omitted.

[0507] In this way, "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will communicate (perform transmission and reception) with TRP #1 of 501_1 using transmitting and receiving panel antenna 1 based on antenna module 591_1, and "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will communicate (perform transmission and reception) with TRP #2 of 501_2 using transmitting and receiving panel antenna 2 based on antenna module 591_2.

[0508] Furthermore, "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will communicate (perform transmission and reception) with TRP #1 of 501_1 using a transmitting and receiving panel antenna 3 based on antenna module 591_3, and "terminal 502 having the configuration of Figures 1A, 1B, and 1C" will communicate (perform transmission and reception) with TRP #2 of 501_2 using a transmitting and receiving panel antenna 4 based on antenna module 591_4.

[0509] Therefore, the "terminal 502 having the configuration of Figures 1A, 1B, and 1C" has a transmitting / receiving panel antenna based on an antenna module for communicating with the TRP.

[0510] In addition, communication (transmission and reception) with TRP#1 of 501_1 (or TRP#2 of 501_2) may be performed using a transmitting and receiving panel antenna based on multiple antenna modules.

[0511] In Figure 10C3, "terminal 502 having the configuration of Figures 1A, 1B, and 1C" receives modulated signals (transmission signals) transmitted by two TRPs, but the same implementation is possible when "terminal 502 having the configuration of Figures 1A, 1B, and 1C" receives modulated signals (transmission signals) transmitted by two or more TRPs.

[0512] As shown in Figure 10C3, the terminal 502 can improve data transmission efficiency by communicating with the TRP for each transmitting and receiving panel antenna based on the antenna module, and by using the antenna module, the effect of improving data reception quality can be obtained at the terminal and TRP.

[0513] We will explain specific examples of the operation of TRP#1 of 501_1, TRP#2 of 501_2, and terminal 502 when the states of TRP#1 of 501_1, TRP#2 of 501_2, and terminal 502 are as shown in Figures 5A, 5B, 5C, 5D, 10A, 10B, 10C1, 10C2, and 10C3.

[0514] When the state of TRP #1 of 501_1, TRP #2 of 501_2, and terminal 502 is as shown in Figure 5C, an example of communication between "TRP #1 of 501_1 and terminal 502" is shown in Figure 11A1, and an example of communication between "TRP #2 of 501_2 and terminal 502" is shown in Figure 11A2. Since it is in the state of Figure 5C, terminal 502 is assumed to be equipped with a transmitting and receiving antenna based on an antenna module. Also, the transmitting and receiving panel antenna based on the antenna module equipped in terminal 502 is assumed to be equipped with one antenna module.

[0515] The "frequency used by TRP #1 of 501_1 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #1 of 501_1" are (sometimes referred to as "part") the same (for example, TDD may be used). (However, the "frequency used by TRP #1 of 501_1 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #1 of 501_1" may be different.)

[0516] The "frequency used by TRP #2 of 501_2 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #2 of 501_2" are (sometimes referred to as "part") the same (for example, TDD may be used). (However, the "frequency used by TRP #2 of 501_2 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #2 of 501_2" may be different.)

[0517] As shown in Figure 11A1, TRP #1 of 501_1 transmits an RS (reference signal) (1101_1). Terminal 502 receives the RS (1151_1) and, based on the RS reception status, determines the transmitting / receiving panel antenna (antenna module) based on the antenna module to be used when "terminal 502 transmits a modulated signal to TRP #1 of 501_1" and "terminal 502 receives the modulated signal transmitted from TRP #1 of 501_1 to terminal 502" (the antenna module is determined at the same time). (Note that the RS "transmitting RS (1101_1)" can be considered an RS for selecting a transmitting / receiving panel antenna based on an antenna module to be used for communication from the transmitting / receiving panel antennas based on the antenna module equipped in terminal 502 (and simultaneously selecting the antenna module).) Specific examples of RS transmission have already been described, so description will be omitted.

[0518] Then, the terminal 502 transmits one modulated signal (hereinafter, sometimes referred to as a group of modulated signals) using the selected "transmitting / receiving panel antenna based on the antenna module" (1152_1) (hereinafter, sometimes referred to as transmitting an uplink modulated signal). Then, this (above) modulated signal is received by the TRP #1 of the terminal 501_1 (1102_1).

[0519] Also, TRP #1 of 501_1 transmits one modulated signal (hereinafter, sometimes referred to as a group of modulated signals) (1103_1) (hereinafter, sometimes referred to as transmission of a downlink modulated signal). Terminal 502 receives this modulated signal (1153_1) using the selected "transmitting / receiving panel antenna based on the antenna module."

[0520] 11A1 is an example of communication between "TRP#1 of 501_1 and terminal 502", and the communication between "TRP#1 of 501_1 and terminal 502" is not limited to this example. Also, although TRP#1 of 501_1 transmits an RS, the name is not limited to this. Furthermore, the order is that terminal 502 transmits a modulated signal, and then TRP#1 of 501_1 transmits a modulated signal, but the order of "transmission of modulated signal from terminal 502" and "transmission of modulated signal from TRP#1 of 501_1" is not limited to this example.

[0521] 11A2, TRP #2 of 501_2 transmits an RS (reference signal) (1101_2). Terminal 502 receives the RS (1151_2) and, based on the reception status of the RS, determines the transmitting / receiving panel antenna (antenna module) based on the antenna module to be used when "terminal 502 transmits a modulated signal to TRP #2 of 501_2" and "terminal 502 receives the modulated signal transmitted from TRP #2 of 501_2 to terminal 502" (the antenna module is determined at the same time). (Note that the RS "transmitting RS (1101_2)" can be an RS for selecting a transmitting / receiving panel antenna based on an antenna module to be used for communication from the transmitting / receiving panel antennas based on the antenna module equipped in terminal 502 (and simultaneously selecting an antenna module).) Specific examples of RS transmission have already been described, so description will be omitted.

[0522] Then, the terminal 502 transmits one modulated signal (hereinafter, sometimes referred to as a group of modulated signals) using the selected "transmitting / receiving panel antenna based on the antenna module" (1152_2) (hereinafter, sometimes referred to as transmitting an uplink modulated signal). Then, this (above) modulated signal is received by the TRP #2 of the terminal 501_2 (1102_2).

[0523] Furthermore, TRP #2 of 501_2 transmits one modulated signal (hereinafter, sometimes referred to as a group of modulated signals) (1103_2) (hereinafter, sometimes referred to as transmission of a downlink modulated signal). Terminal 502 receives this modulated signal (1153_2) using the selected "transmitting / receiving panel antenna based on the antenna module."

[0524] 11A2 is an example of communication between "TRP#2 of 501_2 and terminal 502", and communication between "TRP#2 of 501_2 and terminal 502" is not limited to this example. Also, although TRP#2 of 501_2 transmits an RS, the name is not limited to this. Furthermore, the order is that terminal 502 transmits a modulated signal, and then TRP#2 of 501_2 transmits a modulated signal, but the order of "transmission of modulated signal from terminal 502" and "transmission of modulated signal from TRP#2 of 501_2" is not limited to this example.

[0525] Through the exchange between "TRP#1 of 501_1 and terminal 502" in Figure 11A1 and the exchange between "TRP#2 of 501_2 and terminal 502" in Figure 11A2, for example, as shown in Figure 5C, TRP#1 of 501_1 transmits a downlink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to terminal 502, and TRP#2 of 501_2 transmits a downlink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to terminal 502.

[0526] At this time, it is assumed that the downlink SDM method, the downlink TDM method, and the downlink FDM method can be applied as the transmission method of "the downlink modulated signal transmitted by TRP #1 of 501_1 and the downlink modulated signal transmitted by TRP #2 of 501_2". Note that the system consisting of "TRP #1 of 501_1, TRP #2 of 501_2" and "terminal 502" may switch or use "downlink SDM method, downlink TDM method, downlink FDM method" depending on the communication situation, communication environment, the capabilities of each device, etc. The downlink SDM method, downlink TDM method, and downlink FDM method have already been explained, so explanations will be omitted.

[0527] Furthermore, through the exchange between "TRP#1 of 501_1 and terminal 502" in Figure 11A1 and the exchange between "TRP#2 of 501_2 and terminal 502" in Figure 11A2, for example, as shown in Figure 5C, terminal 502 will transmit an uplink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to TRP#1 of 501_1, and will transmit an uplink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to TRP#2 of 501_2.

[0528] At this time, it is assumed that the uplink SDM method, the uplink TDM method, and the uplink FDM method can be applied as the transmission method of "the uplink modulated signal that terminal 502 transmits to TRP #1 of 501_1 and the uplink modulated signal that terminal 502 transmits to TRP #2 of 501_2". Note that the system consisting of "TRP #1 of 501_1, TRP #2 of 501_2" and "terminal 502" may switch or use "uplink SDM method, uplink TDM method, uplink FDM method" depending on the communication situation, communication environment, capability of each device, etc. The uplink SDM method, uplink TDM method, and uplink FDM method have already been explained, so explanations will be omitted.

[0529] In this way, the terminal 502 can communicate with multiple TRPs, thereby improving data transmission efficiency, and by using the antenna module, the terminal and TRP can achieve the effect of improving the data reception quality.

[0530] When the state of TRP #1 of 501_1, TRP #2 of 501_2, and terminal 502 is as shown in Figure 10C1, an example of communication between "TRP #1 of 501_1 and terminal 502" is shown in Figure 11A1, and an example of communication between "TRP #2 of 501_2 and terminal 502" is shown in Figure 11A2. Since the state is as shown in Figure 10C1, terminal 502 is assumed to be equipped with a transmitting and receiving antenna based on an antenna module. Furthermore, the transmitting and receiving panel antenna based on the antenna module equipped in terminal 502 is assumed to be equipped with one antenna module.

[0531] The "frequency used by TRP #1 of 501_1 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #1 of 501_1" are (sometimes referred to as "part") the same (for example, TDD may be used). (However, the "frequency used by TRP #1 of 501_1 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #1 of 501_1" may be different.)

[0532] The "frequency used by TRP #2 of 501_2 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #2 of 501_2" are (sometimes referred to as "part") the same (for example, TDD may be used). (However, the "frequency used by TRP #2 of 501_2 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #2 of 501_2" may be different.)

[0533] As shown in Figure 11A1, TRP #1 of 501_1 transmits an RS (reference signal) (1101_1). Terminal 502 receives the RS (1151_1) and, based on the RS reception status, determines the transmitting / receiving panel antenna (antenna module) based on the antenna module to be used when "terminal 502 transmits a modulated signal to TRP #1 of 501_1" and "terminal 502 receives the modulated signal transmitted from TRP #1 of 501_1 to terminal 502" (the antenna module is determined at the same time). (Note that the RS "transmitting RS (1101_1)" can be considered an RS for selecting a transmitting / receiving panel antenna based on an antenna module to be used for communication from the transmitting / receiving panel antennas based on the antenna module equipped in terminal 502 (and simultaneously selecting the antenna module).) Specific examples of RS transmission have already been described, so description will be omitted.

[0534] Then, terminal 502 transmits the two modulated signals (hereinafter sometimes referred to as a modulated signal group) using the selected "transmitting and receiving panel antenna based on the antenna module" (1152_1) (hereinafter sometimes referred to as transmitting an uplink modulated signal). For example, in the case of FIG. 10C1, terminal 502 transmits modulated signals using transmit and receive panel antenna 1 based on antenna module 591_1 and transmit and receive antenna 3 based on antenna module 591_3. These (above) modulated signals are then received by TRP #1 of 501_1 (1102_1).

[0535] Also, TRP #1 of 501_1 transmits one modulated signal (hereinafter, sometimes referred to as a group of modulated signals) (1103_1) (hereinafter, sometimes referred to as transmission of a downlink modulated signal). Terminal 502 receives this modulated signal (1153_1) using the selected "transmitting / receiving panel antenna based on the antenna module."

[0536] 11A1 is an example of communication between "TRP#1 of 501_1 and terminal 502", and the communication between "TRP#1 of 501_1 and terminal 502" is not limited to this example. Also, although TRP#1 of 501_1 transmits an RS, the name is not limited to this. Furthermore, the order is that terminal 502 transmits a modulated signal, and then TRP#1 of 501_1 transmits a modulated signal, but the order of "transmission of modulated signal from terminal 502" and "transmission of modulated signal from TRP#1 of 501_1" is not limited to this example.

[0537] 11A2, TRP #2 of 501_2 transmits an RS (reference signal) (1101_2). Terminal 502 receives the RS (1151_2) and, based on the reception status of the RS, determines the transmitting / receiving panel antenna (antenna module) based on the antenna module to be used when "terminal 502 transmits a modulated signal to TRP #2 of 501_2" and "terminal 502 receives the modulated signal transmitted from TRP #2 of 501_2 to terminal 502" (the antenna module is determined at the same time). (Note that the RS "transmitting RS (1101_2)" can be an RS for selecting a transmitting / receiving panel antenna based on an antenna module to be used for communication from the transmitting / receiving panel antennas based on the antenna module equipped in terminal 502 (and simultaneously selecting an antenna module).) Specific examples of RS transmission have already been described, so description will be omitted.

[0538] Then, terminal 502 transmits the two modulated signals (hereinafter sometimes referred to as a modulated signal group) using the selected "transmitting and receiving panel antenna based on the antenna module" (1152_2) (hereinafter sometimes referred to as transmitting an uplink modulated signal). For example, in the case of FIG. 10C1, terminal 502 transmits modulated signals using transmit and receive panel antenna 2 based on antenna module 591_2 and transmit and receive antenna 4 based on antenna module 591_4. These (above) modulated signals are then received by TRP #2 of 501_2 (1102_2).

[0539] Furthermore, TRP #2 of 501_2 transmits one modulated signal (hereinafter, sometimes referred to as a group of modulated signals) (1103_2) (hereinafter, sometimes referred to as transmission of a downlink modulated signal). Terminal 502 receives this modulated signal (1153_2) using the selected "transmitting / receiving panel antenna based on the antenna module."

[0540] 11A2 is an example of communication between "TRP#2 of 501_2 and terminal 502", and communication between "TRP#2 of 501_2 and terminal 502" is not limited to this example. Also, although TRP#2 of 501_2 transmits an RS, the name is not limited to this. Furthermore, the order is that terminal 502 transmits a modulated signal, and then TRP#2 of 501_2 transmits a modulated signal, but the order of "transmission of modulated signal from terminal 502" and "transmission of modulated signal from TRP#2 of 501_2" is not limited to this example.

[0541] 11A1 and the exchange between "TRP#1 of 501_1 and terminal 502" in FIG. 11A2, for example, as shown in FIG. 10C1, TRP#1 of 501_1 transmits a downlink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to terminal 502, and TRP#2 of 501_2 transmits a downlink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to terminal 502.

[0542] At this time, it is assumed that the downlink SDM method, the downlink TDM method, and the downlink FDM method can be applied as the transmission method of "the downlink modulated signal transmitted by TRP #1 of 501_1 and the downlink modulated signal transmitted by TRP #2 of 501_2". Note that the system consisting of "TRP #1 of 501_1, TRP #2 of 501_2" and "terminal 502" may switch or use "downlink SDM method, downlink TDM method, downlink FDM method" depending on the communication situation, communication environment, the capabilities of each device, etc. The downlink SDM method, downlink TDM method, and downlink FDM method have already been explained, so explanations will be omitted.

[0543] Furthermore, through the exchange between "TRP#1 of 501_1 and terminal 502" in Figure 11A1 and the exchange between "TRP#2 of 501_2 and terminal 502" in Figure 11A2, for example, as shown in Figure 10C1, terminal 502 will transmit an uplink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to TRP#1 of 501_1, and will transmit an uplink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to TRP#2 of 501_2.

[0544] At this time, it is assumed that the uplink SDM method, the uplink TDM method, and the uplink FDM method can be applied as the transmission method of "the uplink modulated signal that terminal 502 transmits to TRP #1 of 501_1 and the uplink modulated signal that terminal 502 transmits to TRP #2 of 501_2". Note that the system consisting of "TRP #1 of 501_1, TRP #2 of 501_2" and "terminal 502" may switch or use "uplink SDM method, uplink TDM method, uplink FDM method" depending on the communication situation, communication environment, capability of each device, etc. The uplink SDM method, uplink TDM method, and uplink FDM method have already been explained, so explanations will be omitted.

[0545] In this way, the terminal 502 can communicate with multiple TRPs, thereby improving data transmission efficiency, and by using the antenna module, the terminal and TRP can achieve the effect of improving the data reception quality.

[0546] When the state of TRP #1 of 501_1, TRP #2 of 501_2, and terminal 502 is as shown in Figure 10C2, an example of communication between "TRP #1 of 501_1 and terminal 502" is shown in Figure 11A1, and an example of communication between "TRP #2 of 501_2 and terminal 502" is shown in Figure 11A2. Since the state is as shown in Figure 10C2, terminal 502 is assumed to be equipped with a transmitting and receiving antenna based on an antenna module. Furthermore, the transmitting and receiving panel antenna based on the antenna module equipped in terminal 502 is assumed to be equipped with one antenna module.

[0547] The "frequency used by TRP #1 of 501_1 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #1 of 501_1" are (sometimes referred to as "part") the same (for example, TDD may be used). (However, the "frequency used by TRP #1 of 501_1 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #1 of 501_1" may be different.)

[0548] The "frequency used by TRP #2 of 501_2 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #2 of 501_2" are (sometimes referred to as "part") the same (for example, TDD may be used). (However, the "frequency used by TRP #2 of 501_2 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #2 of 501_2" may be different.)

[0549] As shown in Figure 11A1, TRP #1 of 501_1 transmits an RS (reference signal) (1101_1). Terminal 502 receives the RS (1151_1) and, based on the RS reception status, determines the transmitting / receiving panel antenna (antenna module) based on the antenna module to be used when "terminal 502 transmits a modulated signal to TRP #1 of 501_1" and "terminal 502 receives the modulated signal transmitted from TRP #1 of 501_1 to terminal 502" (the antenna module is determined at the same time). (Note that the RS "transmitting RS (1101_1)" can be considered an RS for selecting a transmitting / receiving panel antenna based on an antenna module to be used for communication from the transmitting / receiving panel antennas based on the antenna module equipped in terminal 502 (and simultaneously selecting the antenna module).) Specific examples of RS transmission have already been described, so description will be omitted.

[0550] Then, terminal 502 transmits one modulated signal (hereinafter sometimes referred to as a group of modulated signals) using the selected "transmitting / receiving panel antenna based on the antenna module" (1152_1) (hereinafter sometimes referred to as transmitting an uplink modulated signal). For example, in the case of FIG. 10C2, terminal 502 transmits a modulated signal using transmit / receive panel antenna 1 based on antenna module 591_1. Then, TRP #1 of 501_1 receives this (above) modulated signal (1102_1).

[0551] Furthermore, TRP #1 of 501_1 transmits two modulated signals (hereinafter, sometimes referred to as modulated signal groups) (1103_1) (hereinafter, sometimes referred to as transmitting downlink modulated signals). Terminal 502 receives these modulated signals using the selected "transmitting and receiving panel antenna based on the antenna module" (1153_1). For example, in the case of FIG. 10C2, terminal 502 receives the modulated signals using transmit and receive panel antenna 1 based on antenna module 591_1 and transmit and receive panel antenna 3 based on antenna module 591_3.

[0552] 11A1 is an example of communication between "TRP#1 of 501_1 and terminal 502", and the communication between "TRP#1 of 501_1 and terminal 502" is not limited to this example. Also, although TRP#1 of 501_1 transmits an RS, the name is not limited to this. Furthermore, the order is that terminal 502 transmits a modulated signal, and then TRP#1 of 501_1 transmits a modulated signal, but the order of "transmission of modulated signal from terminal 502" and "transmission of modulated signal from TRP#1 of 501_1" is not limited to this example.

[0553] 11A2, TRP #2 of 501_2 transmits an RS (reference signal) (1101_2). Terminal 502 receives the RS (1151_2) and, based on the reception status of the RS, determines the transmitting / receiving panel antenna (antenna module) based on the antenna module to be used when "terminal 502 transmits a modulated signal to TRP #2 of 501_2" and "terminal 502 receives the modulated signal transmitted from TRP #2 of 501_2 to terminal 502" (the antenna module is determined at the same time). (Note that the RS "transmitting RS (1101_2)" can be an RS for selecting a transmitting / receiving panel antenna based on an antenna module to be used for communication from the transmitting / receiving panel antennas based on the antenna module equipped in terminal 502 (and simultaneously selecting an antenna module).) Specific examples of RS transmission have already been described, so description will be omitted.

[0554] Then, terminal 502 transmits one modulated signal (hereinafter sometimes referred to as a modulated signal group) using the selected "transmitting / receiving panel antenna based on the antenna module" (1152_2) (hereinafter sometimes referred to as transmitting an uplink modulated signal). For example, in the case of FIG. 10C2, terminal 502 transmits a modulated signal using transmit / receive panel antenna 2 based on antenna module 591_2. Then, TRP #2 of 501_2 receives this (above) modulated signal (1102_2).

[0555] Furthermore, TRP #2 of 501_2 transmits two modulated signals (hereinafter, sometimes referred to as modulated signal groups) (1103_2) (hereinafter, sometimes referred to as transmitting downlink modulated signals). Terminal 502 receives these modulated signals using the selected "transmitting and receiving panel antenna based on the antenna module" (1153_2). For example, in the case of FIG. 10C2, terminal 502 receives the modulated signals using transmit and receive panel antenna 2 based on antenna module 591_2 and transmit and receive panel antenna 4 based on antenna module 591_4.

[0556] 11A2 is an example of communication between "TRP#2 of 501_2 and terminal 502", and communication between "TRP#2 of 501_2 and terminal 502" is not limited to this example. Also, although TRP#2 of 501_2 transmits an RS, the name is not limited to this. Furthermore, the order is that terminal 502 transmits a modulated signal, and then TRP#2 of 501_2 transmits a modulated signal, but the order of "transmission of modulated signal from terminal 502" and "transmission of modulated signal from TRP#2 of 501_2" is not limited to this example.

[0557] 11A1 and the exchange between "TRP#1 of 501_1 and terminal 502" in FIG. 11A2, for example, as shown in FIG. 10C2, TRP#1 of 501_1 transmits a downlink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to terminal 502, and TRP#2 of 501_2 transmits a downlink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to terminal 502.

[0558] At this time, it is assumed that the downlink SDM method, the downlink TDM method, and the downlink FDM method can be applied as the transmission method of "the downlink modulated signal transmitted by TRP #1 of 501_1 and the downlink modulated signal transmitted by TRP #2 of 501_2". Note that the system consisting of "TRP #1 of 501_1, TRP #2 of 501_2" and "terminal 502" may switch or use "downlink SDM method, downlink TDM method, downlink FDM method" depending on the communication situation, communication environment, the capabilities of each device, etc. The downlink SDM method, downlink TDM method, and downlink FDM method have already been explained, so explanations will be omitted.

[0559] Furthermore, due to the exchange between "TRP#1 of 501_1 and terminal 502" in Figure 11A1 and the exchange between "TRP#2 of 501_2 and terminal 502" in Figure 11A2, for example, as shown in Figure 10C2, terminal 502 will transmit an uplink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to TRP#1 of 501_1, and will transmit an uplink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to TRP#2 of 501_2.

[0560] At this time, it is assumed that the uplink SDM method, the uplink TDM method, and the uplink FDM method can be applied as the transmission method of "the uplink modulated signal that terminal 502 transmits to TRP #1 of 501_1 and the uplink modulated signal that terminal 502 transmits to TRP #2 of 501_2". Note that the system consisting of "TRP #1 of 501_1, TRP #2 of 501_2" and "terminal 502" may switch or use "uplink SDM method, uplink TDM method, uplink FDM method" depending on the communication situation, communication environment, capability of each device, etc. The uplink SDM method, uplink TDM method, and uplink FDM method have already been explained, so explanations will be omitted.

[0561] In this way, the terminal 502 can communicate with multiple TRPs, thereby improving data transmission efficiency, and by using the antenna module, the terminal and TRP can achieve the effect of improving the data reception quality.

[0562] When the state of TRP #1 of 501_1, TRP #2 of 501_2, and terminal 502 is as shown in Figure 10C3, an example of communication between "TRP #1 of 501_1 and terminal 502" is shown in Figure 11A1, and an example of communication between "TRP #2 of 501_2 and terminal 502" is shown in Figure 11A2. Since the state is as shown in Figure 10C3, terminal 502 is assumed to be equipped with a transmitting and receiving antenna based on an antenna module. Furthermore, the transmitting and receiving panel antenna based on the antenna module equipped in terminal 502 is assumed to be equipped with one antenna module.

[0563] The "frequency used by TRP #1 of 501_1 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #1 of 501_1" are (sometimes referred to as "part") the same (for example, TDD may be used). (However, the "frequency used by TRP #1 of 501_1 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #1 of 501_1" may be different.)

[0564] The "frequency used by TRP #2 of 501_2 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #2 of 501_2" are (sometimes referred to as "part") the same (for example, TDD may be used). (However, the "frequency used by TRP #2 of 501_2 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #2 of 501_2" may be different.)

[0565] As shown in Figure 11A1, TRP #1 of 501_1 transmits an RS (reference signal) (1101_1). Terminal 502 receives the RS (1151_1) and, based on the RS reception status, determines the transmitting / receiving panel antenna (antenna module) based on the antenna module to be used when "terminal 502 transmits a modulated signal to TRP #1 of 501_1" and "terminal 502 receives the modulated signal transmitted from TRP #1 of 501_1 to terminal 502" (the antenna module is determined at the same time). (Note that the RS "transmitting RS (1101_1)" can be considered an RS for selecting a transmitting / receiving panel antenna based on an antenna module to be used for communication from the transmitting / receiving panel antennas based on the antenna module equipped in terminal 502 (and simultaneously selecting the antenna module).) Specific examples of RS transmission have already been described, so description will be omitted.

[0566] Then, terminal 502 transmits the two modulated signals (hereinafter sometimes referred to as a modulated signal group) using the selected "transmitting and receiving panel antenna based on the antenna module" (1152_1) (hereinafter sometimes referred to as transmitting an uplink modulated signal). For example, in the case of FIG. 10C3, terminal 502 transmits modulated signals using transmit / receive panel antenna 1 based on antenna module 591_1 and transmit / receive panel antenna 3 based on antenna module 591_3. These (above) modulated signals are then received by TRP #1 of 501_1 (1102_1).

[0567] Furthermore, TRP #1 of 501_1 transmits two modulated signals (hereinafter, sometimes referred to as modulated signal groups) (1103_1) (hereinafter, sometimes referred to as transmitting downlink modulated signals). Terminal 502 receives these modulated signals using the selected "transmitting and receiving panel antenna based on the antenna module" (1153_1). For example, in the case of FIG. 10C3, terminal 502 receives the modulated signals using transmit and receive panel antenna 1 based on antenna module 591_1 and transmit and receive panel antenna 3 based on antenna module 591_3.

[0568] 11A1 is an example of communication between "TRP#1 of 501_1 and terminal 502", and the communication between "TRP#1 of 501_1 and terminal 502" is not limited to this example. Also, although TRP#1 of 501_1 transmits an RS, the name is not limited to this. Furthermore, the order is that terminal 502 transmits a modulated signal, and then TRP#1 of 501_1 transmits a modulated signal, but the order of "transmission of modulated signal from terminal 502" and "transmission of modulated signal from TRP#1 of 501_1" is not limited to this example.

[0569] 11A2, TRP #2 of 501_2 transmits an RS (reference signal) (1101_2). Terminal 502 receives the RS (1151_2) and, based on the reception status of the RS, determines the transmitting / receiving panel antenna (antenna module) based on the antenna module to be used when "terminal 502 transmits a modulated signal to TRP #2 of 501_2" and "terminal 502 receives the modulated signal transmitted from TRP #2 of 501_2 to terminal 502" (the antenna module is determined at the same time). (Note that the RS "transmitting RS (1101_2)" can be an RS for selecting a transmitting / receiving panel antenna based on an antenna module to be used for communication from the transmitting / receiving panel antennas based on the antenna module equipped in terminal 502 (and simultaneously selecting an antenna module).) Specific examples of RS transmission have already been described, so description will be omitted.

[0570] Then, terminal 502 transmits the two modulated signals (hereinafter sometimes referred to as a modulated signal group) using the selected "transmitting and receiving panel antenna based on the antenna module" (1152_2) (hereinafter sometimes referred to as transmitting an uplink modulated signal). For example, in the case of FIG. 10C3, terminal 502 transmits modulated signals using transmit / receive panel antenna 2 based on antenna module 591_2 and transmit / receive panel antenna 4 based on antenna module 591_4. These (above) modulated signals are then received by TRP #2 of 501_2 (1102_2).

[0571] Furthermore, TRP #2 of 501_2 transmits two modulated signals (hereinafter, sometimes referred to as modulated signal groups) (1103_2) (hereinafter, sometimes referred to as transmitting downlink modulated signals). Terminal 502 receives these modulated signals using the selected "transmitting and receiving panel antenna based on the antenna module" (1153_2). For example, in the case of FIG. 10C3, terminal 502 receives the modulated signals using transmit and receive panel antenna 2 based on antenna module 591_2 and transmit and receive panel antenna 4 based on antenna module 591_4.

[0572] 11A2 is an example of communication between "TRP#2 of 501_2 and terminal 502", and communication between "TRP#2 of 501_2 and terminal 502" is not limited to this example. Also, although TRP#2 of 501_2 transmits an RS, the name is not limited to this. Furthermore, the order is that terminal 502 transmits a modulated signal, and then TRP#2 of 501_2 transmits a modulated signal, but the order of "transmission of modulated signal from terminal 502" and "transmission of modulated signal from TRP#2 of 501_2" is not limited to this example.

[0573] 11A1 and the exchange between "TRP#1 of 501_1 and terminal 502" in FIG. 11A2, for example, as shown in FIG. 10C3, TRP#1 of 501_1 transmits a downlink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to terminal 502, and TRP#2 of 501_2 transmits a downlink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to terminal 502.

[0574] At this time, it is assumed that the downlink SDM method, the downlink TDM method, and the downlink FDM method can be applied as the transmission method of "the downlink modulated signal transmitted by TRP #1 of 501_1 and the downlink modulated signal transmitted by TRP #2 of 501_2". Note that the system consisting of "TRP #1 of 501_1, TRP #2 of 501_2" and "terminal 502" may switch or use "downlink SDM method, downlink TDM method, downlink FDM method" depending on the communication situation, communication environment, the capabilities of each device, etc. The downlink SDM method, downlink TDM method, and downlink FDM method have already been explained, so explanations will be omitted.

[0575] Furthermore, due to the interaction between "TRP#1 of 501_1 and terminal 502" in Figure 11A1 and the interaction between "TRP#2 of 501_2 and terminal 502" in Figure 11A2, for example, as shown in Figure 10C3, terminal 502 will transmit an uplink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to TRP#1 of 501_1, and will transmit an uplink modulated signal (one or more modulated signals, which may also be called a modulated signal group) to TRP#2 of 501_2.

[0576] At this time, it is assumed that the uplink SDM method, the uplink TDM method, and the uplink FDM method can be applied as the transmission method of "the uplink modulated signal that terminal 502 transmits to TRP #1 of 501_1 and the uplink modulated signal that terminal 502 transmits to TRP #2 of 501_2". Note that the system consisting of "TRP #1 of 501_1, TRP #2 of 501_2" and "terminal 502" may switch or use "uplink SDM method, uplink TDM method, uplink FDM method" depending on the communication situation, communication environment, capability of each device, etc. The uplink SDM method, uplink TDM method, and uplink FDM method have already been explained, so explanations will be omitted.

[0577] In this way, the terminal 502 can communicate with multiple TRPs, thereby improving data transmission efficiency, and by using the antenna module, the terminal and TRP can achieve the effect of improving the data reception quality.

[0578] When the state of TRP #1 of 501_1, TRP #2 of 501_2, and terminal 502 is as shown in Figure 5D, examples of communication between "TRP #1 of 501_1 and terminal 502" are shown in Figures 11B1, 11B2, and 11B3, and examples of communication between "TRP #2 of 501_2 and terminal 502" are shown in Figures 11C1, 11C2, and 11C3. Since the state is as shown in Figure 5D, terminal 502 is assumed to be equipped with a transmitting and receiving antenna based on an antenna module. Furthermore, the transmitting and receiving panel antenna based on the antenna module equipped in terminal 502 is assumed to be equipped with one antenna module.

[0579] It is assumed that the "frequency used by TRP #1 of 501_1 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #1 of 501_1" are different. (For example, FDD may be used.) (However, the "frequency used by TRP #1 of 501_1 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #1 of 501_1" may be the same (sometimes referred to as "partially").)

[0580] It is assumed that "the frequency used by TRP #2 of 501_2 to transmit a modulated signal to terminal 502" and "the frequency used by terminal 502 to transmit a modulated signal to TRP #2 of 501_2" are different. (For example, FDD may be used.) (However, "the frequency used by TRP #2 of 501_2 to transmit a modulated signal to terminal 502" and "the frequency used by terminal 502 to transmit a modulated signal to TRP #2 of 501_2" may be (sometimes referred to as "part") the same.)

[0581] FIG. 11B1 shows an example of communication between "TRP#1 of 501_1 and terminal 502," with the horizontal axis representing time.

[0582] For example, as shown in FIG. 11B1, TRP#1 of 501_1 and terminal 502 exchange information for setting 1191_1 of the "receiving panel antenna based on the antenna module (or the receiving panel antenna of the transmitting / receiving panel antenna based on the antenna module)" when terminal 502 receives a modulated signal.

[0583] Thereafter, TRP#1 of 501_1 and terminal 502 exchange information for "setting 1192_1 of the transmitting panel antenna based on the antenna module (or the transmitting panel antenna of the transmitting / receiving panel antenna based on the antenna module)" when terminal 502 transmits a modulated signal.

[0584] Then, TRP#1 of 501_1 and terminal 502 are assumed to perform "data communication 1193_1 between TRP#1 of 501_1 and terminal 502."

[0585] In Figure 11B1, setting 1191_1 of a "receiving panel antenna based on an antenna module (or a receiving panel antenna of a transmitting and receiving panel antenna based on an antenna module)" is followed by setting 1192_1 of a "transmitting panel antenna based on an antenna module (or a transmitting panel antenna of a transmitting and receiving panel antenna based on an antenna module)", but this is merely an example and is not limited to this order, and these two settings may be implemented in any way.

[0586] Figure 11B2 shows an example of a specific exchange between "TRP#1 of 501_1 and terminal 502" for setting 1191_1 of "receiving panel antenna based on antenna module (or receiving panel antenna of transmitting / receiving panel antenna based on antenna module)" in Figure 11B1.

[0587] As shown in FIG. 11B2, TRP #1 of 501_1 transmits an RS (1111_1). Terminal 502 receives the RS (1161_1) and, based on the reception status of the RS, determines the transmitting / receiving panel antenna (or receiving panel antenna based on the antenna module) based on the antenna module to be used when "terminal 502 receives the modulated signal transmitted from TRP #1 of 501_1 to terminal 502" (the antenna module is determined at the same time). (Note that the RS "transmitting RS (1111_1)" can be an RS for selecting the transmitting / receiving panel antenna (or receiving panel antenna based on the antenna module) based on the antenna module to be used for reception from the transmitting / receiving panel antennas (or receiving panel antennas based on the antenna module) based on the antenna module equipped in terminal 502 (and simultaneously selecting the antenna module).) Specific examples of RS transmission have already been described, so description will be omitted.

[0588] A specific example of a transmitting / receiving panel antenna based on an antenna module (or a receiving panel antenna based on an antenna module) used when "terminal 502 receives a modulated signal transmitted from TRP #1 of 501_1 to terminal 502" is shown in Figure 5D (or Figure 5B). As another method, the modulated signal transmitted by the TRP may be received using a transmitting / receiving panel antenna based on multiple antenna modules (or a receiving panel antenna based on antenna modules).

[0589] 11B2 is an example of an exchange between "TRP#1 of 501_1 and terminal 502", and the exchange between "TRP#1 of 501_1 and terminal 502" is not limited to this example. Also, although TRP#1 of 501_1 transmits RS, the name is not limited to this.

[0590] Figure 11B3 shows an example of a specific exchange between "TRP#1 of 501_1 and terminal 502" for "setting 1192_1 of 'transmitting panel antenna based on antenna module (or transmitting panel antenna of transmitting / receiving panel antenna based on antenna module)'" in Figure 11B1.

[0591] As shown in Figure 11B3, terminal 502 transmits an RS (1171_1). TRP #1 of 501_1 receives the RS (1121_1) and, based on the reception state of the RS, "generates information regarding the allocation of transmitting and receiving panel antennas based on the antenna module (or transmitting panel antennas based on the antenna module) when terminal 502 transmits a modulated signal" (1122_1). Then, TRP #1 of 501_1 "transmits information regarding the allocation of transmitting and receiving panel antennas based on the antenna module (or transmitting panel antennas based on the antenna module) when terminal 502 transmits a modulated signal" (1123_1).

[0592] Terminal 502 obtains this (above) information and determines the transmitting / receiving panel antenna (or transmitting panel antenna based on an antenna module) based on the antenna module to be used when terminal 502 transmits a modulated signal to TRP #1 of 501_1. (Note that the RS of "transmitting RS (1171_1)" can be considered an RS for selecting the transmitting / receiving panel antenna (or transmitting panel antenna based on an antenna module) based on the antenna module to be used for transmission from the transmitting / receiving panel antennas (or transmitting panel antennas based on antenna modules) based on the antenna modules that terminal 502 has (and simultaneously selecting the antenna module).) Specific examples of transmitting RS have already been described using Figures 9A1, 9A2, and 9A3, so further description will be omitted.

[0593] At this time, the "determination of the transmitting and receiving panel antenna based on the antenna module (or the transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal to TRP#1 of 501_1" may be performed by terminal 502 or by TRP#1 of 501_1.

[0594] For example, when TRP #1 of 501_1 "determines the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal to TRP #1 of 501_1," the "information regarding the allocation of the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) when "terminal 502 transmits a modulated signal"" will include information regarding the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when "terminal 502 transmits a modulated signal."

[0595] When terminal 502 "determines the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal to TRP #1 of 501_1," terminal 502 obtains "information regarding the allocation of transmitting and receiving panel antennas (or transmitting panel antennas based on the antenna module) to be used when terminal 502 transmits a modulated signal," and determines the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal.

[0596] A specific example of the "transmitting / receiving panel antenna based on the antenna module (or transmitting panel antenna based on the antenna module) used by the terminal 502 when transmitting a modulated signal to TRP #1 of 501_1" is shown in Figure 5D (or Figure 5A). Alternatively, the terminal 502 may transmit modulated signals to multiple TRPs using a transmit / receive panel antenna based on multiple antenna modules (or transmitting panel antennas based on antenna modules).

[0597] This causes terminal 502 to determine a transmission method, such as a transmit / receive panel antenna based on an antenna module (or a transmit panel antenna based on an antenna module) to be used when transmitting a modulated signal to TRP #1 of 501_1 (1172_1).

[0598] 11B3 is an example of communication between "TRP#1 of 501_1 and terminal 502", and communication between "TRP#1 of 501_1 and terminal 502" is not limited to this example. Also, although terminal 502 transmits RS, the name of the RS is not limited to this.

[0599] FIG. 11C1 shows an example of communication between "TRP#2 of 501_2 and terminal 502," with the horizontal axis representing time.

[0600] For example, as shown in Figure 11C1, TRP #2 of 501_2 and terminal 502 exchange information for "setting 1191_2 of the receiving panel antenna based on the antenna module (or the receiving panel antenna of the transmitting and receiving panel antenna based on the antenna module) when terminal 502 receives a modulated signal."

[0601] Thereafter, TRP#2 of 501_2 and terminal 502 exchange information for "setting 1192_2 of the transmitting panel antenna based on the antenna module (or the transmitting panel antenna of the transmitting and receiving panel antenna based on the antenna module)" when terminal 502 transmits a modulated signal.

[0602] Then, TRP#2 of 501_2 and the terminal 502 perform "Execution of data communication 1193_2 between TRP#2 of 501_2 and the terminal 502."

[0603] In Figure 11C1, setting 1191_2 of a "receiving panel antenna based on an antenna module (or a receiving panel antenna of a transmitting and receiving panel antenna based on an antenna module)" is performed after setting 1192_2 of a "transmitting panel antenna based on an antenna module (or a transmitting panel antenna of a transmitting and receiving panel antenna based on an antenna module)", but this is merely an example and is not limited to this order, and these two settings may be performed in any way.

[0604] Figure 11C2 shows an example of a specific exchange between "TRP#2 of 501_2 and terminal 502" for setting 1191_2 of "receiving panel antenna based on antenna module (or receiving panel antenna of transmitting / receiving panel antenna based on antenna module)" in Figure 11C2.

[0605] As shown in FIG. 11C2, TRP #2 of 501_2 transmits an RS (1111_2). Terminal 502 receives the RS (1161_2) and, based on the reception status of the RS, determines the transmitting / receiving panel antenna (or receiving panel antenna based on the antenna module) based on the antenna module to be used when "terminal 502 receives the modulated signal transmitted from TRP #2 of 501_2 to terminal 502" (the antenna module is determined at the same time). (Note that the RS "transmitting RS (1111_2)" can be an RS for selecting the transmitting / receiving panel antenna (or receiving panel antenna based on the antenna module) based on the antenna module to be used for reception from the transmitting / receiving panel antennas (or receiving panel antennas based on the antenna module) based on the antenna module equipped in terminal 502 (and simultaneously selecting the antenna module).) Specific examples of RS transmission have already been described, so description will be omitted here.

[0606] A specific example of a transmitting / receiving panel antenna based on an antenna module (or a receiving panel antenna based on an antenna module) used when "terminal 502 receives a modulated signal transmitted from TRP #2 of 501_2 to terminal 502" is shown in Figure 5D (or Figure 5B). As another method, the modulated signal transmitted by the TRP may be received using a transmitting / receiving panel antenna based on multiple antenna modules (or a receiving panel antenna based on antenna modules).

[0607] 11C2 is an example of an exchange between "TRP#2 of 501_2 and terminal 502", and the exchange between "TRP#2 of 501_2 and terminal 502" is not limited to this example. Also, although TRP#2 of 501_2 transmits RS, the name is not limited to this.

[0608] Figure 11C3 shows an example of a specific exchange between "TRP#2 of 501_2 and terminal 502" for "setting 1192_2 of 'transmitting panel antenna based on antenna module (or transmitting panel antenna of transmitting / receiving panel antenna based on antenna module)'" in Figure 11C1.

[0609] As shown in FIG. 11C3, terminal 502 transmits an RS (1171_2). TRP #2 of 501_2 receives the RS (1121_2) and, based on the reception status of the RS, generates information regarding the allocation of transmitting and receiving panel antennas (or transmitting panel antennas based on antenna modules) based on the antenna modules when terminal 502 transmits a modulated signal (1122_2). Then, TRP #2 of 501_2 transmits information regarding the allocation of transmitting and receiving panel antennas (or transmitting panel antennas based on antenna modules) based on the antenna modules when terminal 502 transmits a modulated signal (1123_2). Terminal 502 obtains this (above) information and determines the transmitting and receiving panel antennas (or transmitting panel antennas based on antenna modules) based on the antenna modules to be used when terminal 502 transmits a modulated signal to TRP #2 of 501_2. (Note that the RS of "Sending RS (1171_2)" can be said to be an RS for selecting a transmitting / receiving panel antenna (or a transmitting panel antenna based on an antenna module) based on an antenna module to be used for transmission from the transmitting / receiving panel antennas (or transmitting panel antennas based on an antenna module) based on the antenna module equipped in terminal 502 (and simultaneously selecting the antenna module).) Specific examples of transmitting RS have already been explained using Figures 9A1, 9A2, and 9A3, so explanation will be omitted.

[0610] At this time, the "determination of the transmitting and receiving panel antenna based on the antenna module (or the transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal to TRP#2 of 501_2" may be performed by terminal 502 or by TRP#2 of 501_2.

[0611] For example, when TRP#2 of 501_2 "determines the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal to TRP#2 of 501_2," the "information regarding the allocation of the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) when "terminal 502 transmits a modulated signal"" will include information regarding the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when "terminal 502 transmits a modulated signal."

[0612] When terminal 502 "determines the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal to TRP #2 of 501_2," terminal 502 obtains "information regarding the allocation of transmitting and receiving panel antennas (or transmitting panel antennas based on the antenna module) to be used when terminal 502 transmits a modulated signal," and determines the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal.

[0613] A specific example of the "transmitting / receiving panel antenna based on the antenna module (or transmitting panel antenna based on the antenna module) used by terminal 502 when transmitting a modulated signal to TRP #2 of 501_2" is as shown in Figure 5D (or Figure 5A). Alternatively, terminal 502 may transmit modulated signals to multiple TRPs using a transmit / receive panel antenna based on multiple antenna modules (or transmitting panel antenna based on antenna modules).

[0614] This causes terminal 502 to determine a transmission method (1172_2), such as a transmit / receive panel antenna based on the antenna module (or a transmit panel antenna based on the antenna module) to be used when transmitting a modulated signal to TRP #2 of 501_2.

[0615] 11C3 is an example of communication between "TRP#2 of 501_2 and terminal 502," and communication between "TRP#2 of 501_2 and terminal 502" is not limited to this example. Also, although terminal 502 transmits RS, the name of the RS is not limited to this.

[0616] As shown in FIG. 11B1, after setting 1191_1 of the "receiving panel antenna based on the antenna module (or the receiving panel antenna of the transmitting and receiving panel antenna based on the antenna module)" and setting 1192_1 of the "transmitting panel antenna based on the antenna module (or the transmitting panel antenna of the transmitting and receiving panel antenna based on the antenna module)," TRP#1 of 501_1 and terminal 502 will "perform data communication 1193_1 between TRP#1 of 501_1 and terminal 502."

[0617] As shown in FIG. 11C1, after setting 1191_2 of the "receiving panel antenna based on the antenna module (or the receiving panel antenna of the transmitting and receiving panel antenna based on the antenna module)" and setting 1192_2 of the "transmitting panel antenna based on the antenna module (or the transmitting panel antenna of the transmitting and receiving panel antenna based on the antenna module)," TRP#2 of 501_2 and terminal 502 will "perform data communication 1193_2 between TRP#2 of 501_2 and terminal 502."

[0618] In "Data communication 1193_1 between TRP#1 of 501_1 and terminal 502" and "Data communication 1193_2 between TRP#2 of 501_2 and terminal 502," terminal 502 transmits an uplink modulated signal to TRP#1 of 501_1, and terminal 502 transmits an uplink modulated signal to TRP#2 of 501_2.

[0619] Then, TRP#1 of 501_1 transmits a downlink modulated signal to terminal 502, and TRP#2 of 501_2 transmits a downlink modulated signal to terminal 502.

[0620] At this time, it is assumed that the uplink SDM method, the uplink TDM method, and the uplink FDM method can be applied as the transmission method of "the uplink modulated signal that the terminal 502 transmits to the TRP #1 of 501_1 and the uplink modulated signal that the terminal 502 transmits to the TRP #2 of 501_2". Note that the system consisting of "TRP #1 of 501_1, TRP #2 of 501_2" and "terminal 502" may switch or use "uplink SDM method, uplink TDM method, uplink FDM method" depending on the communication situation, communication environment, the capabilities of each device, etc. The specific operation of the uplink SDM method, uplink TDM method, and uplink FDM method has already been explained, so the explanation will be omitted.

[0621] In addition, it is assumed that the downlink SDM method, the downlink TDM method, and the downlink FDM method can be applied as the transmission method of "the downlink modulated signal transmitted by TRP #1 of 501_1 and the downlink modulated signal transmitted by TRP #2 of 501_2". Note that the system consisting of "TRP #1 of 501_1, TRP #2 of 501_2" and "terminal 502" may switch or use "downlink SDM method, downlink TDM method, downlink FDM method" depending on the communication situation, communication environment, the capabilities of each device, etc. The specific operation of the downlink SDM method, downlink TDM method, and downlink FDM method has already been explained, so the explanation will be omitted.

[0622] In this way, the terminal 502 can communicate with multiple TRPs, thereby improving data transmission efficiency, and by using the antenna module, the terminal and TRP can achieve the effect of improving the data reception quality.

[0623] When the state of TRP #1 of 501_1, TRP #2 of 501_2, and terminal 502 is as shown in Figure 10C3, examples of communication between "TRP #1 of 501_1 and terminal 502" are shown in Figures 11B1, 11B2, and 11B3, and examples of communication between "TRP #2 of 501_2 and terminal 502" are shown in Figures 11C1, 11C2, and 11C3. Since the state is as shown in Figure 10C3, terminal 502 is assumed to be equipped with a transmitting and receiving antenna based on an antenna module. Furthermore, the transmitting and receiving panel antenna based on the antenna module equipped in terminal 502 is assumed to be equipped with one antenna module.

[0624] It is assumed that the "frequency used by TRP #1 of 501_1 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #1 of 501_1" are different. (For example, FDD may be used.) (However, the "frequency used by TRP #1 of 501_1 to transmit a modulated signal to terminal 502" and the "frequency used by terminal 502 to transmit a modulated signal to TRP #1 of 501_1" may be the same (sometimes referred to as "partially").)

[0625] It is assumed that "the frequency used by TRP #2 of 501_2 to transmit a modulated signal to terminal 502" and "the frequency used by terminal 502 to transmit a modulated signal to TRP #2 of 501_2" are different. (For example, FDD may be used.) (However, "the frequency used by TRP #2 of 501_2 to transmit a modulated signal to terminal 502" and "the frequency used by terminal 502 to transmit a modulated signal to TRP #2 of 501_2" may be (sometimes referred to as "part") the same.)

[0626] FIG. 11B1 shows an example of communication between "TRP#1 of 501_1 and terminal 502," with the horizontal axis representing time.

[0627] For example, as shown in FIG. 11B1, TRP#1 of 501_1 and terminal 502 exchange information for setting 1191_1 of the "receiving panel antenna based on the antenna module (or the receiving panel antenna of the transmitting / receiving panel antenna based on the antenna module)" when terminal 502 receives a modulated signal.

[0628] Thereafter, TRP#1 of 501_1 and terminal 502 exchange information for "setting 1192_1 of the transmitting panel antenna based on the antenna module (or the transmitting panel antenna of the transmitting / receiving panel antenna based on the antenna module)" when terminal 502 transmits a modulated signal.

[0629] Then, TRP#1 of 501_1 and terminal 502 are assumed to perform "data communication 1193_1 between TRP#1 of 501_1 and terminal 502."

[0630] In Figure 11B1, setting 1191_1 of a "receiving panel antenna based on an antenna module (or a receiving panel antenna of a transmitting and receiving panel antenna based on an antenna module)" is followed by setting 1192_1 of a "transmitting panel antenna based on an antenna module (or a transmitting panel antenna of a transmitting and receiving panel antenna based on an antenna module)", but this is merely an example and is not limited to this order, and these two settings may be implemented in any way.

[0631] Figure 11B2 shows an example of a specific exchange between "TRP#1 of 501_1 and terminal 502" for setting 1191_1 of "receiving panel antenna based on antenna module (or receiving panel antenna of transmitting / receiving panel antenna based on antenna module)" in Figure 11B1.

[0632] As shown in FIG. 11B2, TRP #1 of 501_1 transmits an RS (1111_1). Terminal 502 receives the RS (1161_1) and, based on the reception status of the RS, determines the transmitting / receiving panel antenna (or receiving panel antenna based on the antenna module) based on the antenna module to be used when "terminal 502 receives the modulated signal transmitted from TRP #1 of 501_1 to terminal 502" (the antenna module is determined at the same time). (Note that the RS "transmitting RS (1111_1)" can be an RS for selecting the transmitting / receiving panel antenna (or receiving panel antenna based on the antenna module) based on the antenna module to be used for reception from the transmitting / receiving panel antennas (or receiving panel antennas based on the antenna module) based on the antenna module equipped in terminal 502 (and simultaneously selecting the antenna module).) Specific examples of RS transmission have already been described, so description will be omitted.

[0633] A specific example of a transmitting / receiving panel antenna based on an antenna module (or a receiving panel antenna based on an antenna module) used when terminal 502 receives a modulated signal transmitted from TRP #1 of 501_1 to terminal 502 is shown in Figure 10C3 (or Figures 10B, 10C1, and 10C2). Alternatively, the modulated signal transmitted by the TRP may be received using a transmitting / receiving panel antenna based on multiple antenna modules (or a receiving panel antenna based on antenna modules).

[0634] For example, in Fig. 10C3, the transmitting and receiving panel antenna 1 based on the antenna module of 591_1 and the transmitting and receiving panel antenna 3 based on the antenna module of 591_3 are selected as the transmitting and receiving panel antenna based on the antenna module (or the receiving panel antenna based on the antenna module) to be used when "terminal 502 receives the modulated signal transmitted by TRP #1 of 501_1 to terminal 502." At this time, the antenna modules are also selected.

[0635] In Fig. 10B, receiving panel antenna 1 based on the antenna module of 151_1 and receiving panel antenna 2 based on the antenna module of 151_2 are selected as the transmitting / receiving panel antennas based on the antenna modules (or receiving panel antennas based on the antenna modules) to be used when "terminal 502 receives the modulated signal transmitted by TRP #1 of 501_1 to terminal 502". At this time, the antenna modules are also selected.

[0636] In Fig. 10C1, the transmitting and receiving panel antenna 1 based on the antenna module of 591_1 is selected as the transmitting and receiving panel antenna based on the antenna module (or the receiving panel antenna based on the antenna module) to be used when "terminal 502 receives the modulated signal transmitted by TRP #1 of 501_1 to terminal 502." At this time, the antenna module is also selected.

[0637] In Fig. 10C2, the transmitting and receiving panel antenna 1 based on the antenna module of 591_1 and the transmitting and receiving panel antenna 3 based on the antenna module of 591_3 are selected as the transmitting and receiving panel antenna based on the antenna module (or the receiving panel antenna based on the antenna module) to be used when "terminal 502 receives the modulated signal transmitted by TRP #1 of 501_1 to terminal 502". At this time, the antenna module is also selected.

[0638] 11B2 is an example of an exchange between "TRP#1 of 501_1 and terminal 502", and the exchange between "TRP#1 of 501_1 and terminal 502" is not limited to this example. Also, although TRP#1 of 501_1 transmits RS, the name is not limited to this.

[0639] Figure 11B3 shows an example of a specific exchange between "TRP#1 of 501_1 and terminal 502" for "setting 1192_1 of 'transmitting panel antenna based on antenna module (or transmitting panel antenna of transmitting / receiving panel antenna based on antenna module)'" in Figure 11B1.

[0640] As shown in Figure 11B3, terminal 502 transmits an RS (1171_1). TRP #1 of 501_1 receives the RS (1121_1) and, based on the reception state of the RS, "generates information regarding the allocation of transmitting and receiving panel antennas based on the antenna module (or transmitting panel antennas based on the antenna module) when terminal 502 transmits a modulated signal" (1122_1). Then, TRP #1 of 501_1 "transmits information regarding the allocation of transmitting and receiving panel antennas based on the antenna module (or transmitting panel antennas based on the antenna module) when terminal 502 transmits a modulated signal" (1123_1).

[0641] Terminal 502 obtains this (above) information and determines the transmitting / receiving panel antenna (or transmitting panel antenna based on an antenna module) based on the antenna module to be used when terminal 502 transmits a modulated signal to TRP #1 of 501_1. (Note that the RS of "transmitting RS (1171_1)" can be considered an RS for selecting the transmitting / receiving panel antenna (or transmitting panel antenna based on an antenna module) based on the antenna module to be used for transmission from the transmitting / receiving panel antennas (or transmitting panel antennas based on antenna modules) based on the antenna modules that terminal 502 has (and simultaneously selecting the antenna module).) Specific examples of transmitting RS have already been described using Figures 9A1, 9A2, and 9A3, so further description will be omitted.

[0642] At this time, the "determination of the transmitting and receiving panel antenna based on the antenna module (or the transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal to TRP#1 of 501_1" may be performed by terminal 502 or by TRP#1 of 501_1.

[0643] For example, when TRP #1 of 501_1 "determines the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal to TRP #1 of 501_1," the "information regarding the allocation of the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) when "terminal 502 transmits a modulated signal"" will include information regarding the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when "terminal 502 transmits a modulated signal."

[0644] When terminal 502 "determines the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal to TRP #1 of 501_1," terminal 502 obtains "information regarding the allocation of transmitting and receiving panel antennas (or transmitting panel antennas based on the antenna module) to be used when terminal 502 transmits a modulated signal," and determines the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal.

[0645] A specific example of the "transmitting / receiving panel antenna based on an antenna module (or transmitting panel antenna based on an antenna module) used by terminal 502 when transmitting a modulated signal to TRP #1 of 501_1" is shown in Figure 10C3 (or Figures 10A, 10C1, and 10C2). Alternatively, terminal 502 may transmit modulated signals to multiple TRPs using a transmit / receive panel antenna based on multiple antenna modules (or transmitting panel antennas based on antenna modules).

[0646] For example, in Fig. 10C3, the transmitting and receiving panel antenna 1 based on the antenna module of 591_1 and the transmitting and receiving panel antenna 3 based on the antenna module of 591_3 are selected as the "transmitting and receiving panel antenna based on the antenna module (or the transmitting panel antenna based on the antenna module) used when terminal 502 transmits a modulated signal to TRP #1 of 501_1." At this time, the antenna module is also selected.

[0647] 10A, transmitting panel antenna 1 based on the antenna module of 106_1 and transmitting panel antenna 3 based on the antenna module of 106_3 are selected as "transmitting and receiving panel antennas based on antenna modules (or transmitting panel antennas based on antenna modules) used when terminal 502 transmits a modulated signal to TRP #1 of 501_1." At this time, the antenna modules are also selected.

[0648] In Fig. 10C1, the transmitting and receiving panel antenna 1 based on the antenna module of 591_1 and the transmitting and receiving panel antenna 3 based on the antenna module of 591_3 are selected as "the transmitting and receiving panel antenna based on the antenna module (or the transmitting panel antenna based on the antenna module) used when terminal 502 transmits a modulated signal to TRP #1 of 501_1." At this time, the antenna modules are also selected.

[0649] In Fig. 10C2, the transmitting and receiving panel antenna 1 based on the antenna module of 591_1 is selected as the "transmitting and receiving panel antenna based on the antenna module (or transmitting panel antenna based on the antenna module) used when terminal 502 transmits a modulated signal to TRP #1 of 501_1." At this time, the antenna module is also selected.

[0650] This causes terminal 502 to determine a transmission method, such as a transmit / receive panel antenna based on an antenna module (or a transmit panel antenna based on an antenna module) to be used when transmitting a modulated signal to TRP #1 of 501_1 (1172_1).

[0651] 11B3 is an example of communication between "TRP#1 of 501_1 and terminal 502", and communication between "TRP#1 of 501_1 and terminal 502" is not limited to this example. Also, although terminal 502 transmits RS, the name of the RS is not limited to this.

[0652] FIG. 11C1 shows an example of communication between "TRP#2 of 501_2 and terminal 502," with the horizontal axis representing time.

[0653] For example, as shown in Figure 11C1, TRP #2 of 501_2 and terminal 502 exchange information for "setting 1191_2 of the receiving panel antenna based on the antenna module (or the receiving panel antenna of the transmitting and receiving panel antenna based on the antenna module) when terminal 502 receives a modulated signal."

[0654] Thereafter, TRP#2 of 501_2 and terminal 502 exchange information for "setting 1192_2 of the transmitting panel antenna based on the antenna module (or the transmitting panel antenna of the transmitting and receiving panel antenna based on the antenna module)" when terminal 502 transmits a modulated signal.

[0655] Then, TRP#2 of 501_2 and the terminal 502 perform "Execution of data communication 1193_2 between TRP#2 of 501_2 and the terminal 502."

[0656] In Figure 11C1, setting 1191_2 of a "receiving panel antenna based on an antenna module (or a receiving panel antenna of a transmitting and receiving panel antenna based on an antenna module)" is performed after setting 1192_2 of a "transmitting panel antenna based on an antenna module (or a transmitting panel antenna of a transmitting and receiving panel antenna based on an antenna module)", but this is merely an example and is not limited to this order, and these two settings may be performed in any way.

[0657] Figure 11C2 shows an example of a specific exchange between "TRP#2 of 501_2 and terminal 502" for setting 1191_2 of "receiving panel antenna based on antenna module (or receiving panel antenna of transmitting / receiving panel antenna based on antenna module)" in Figure 11C2.

[0658] As shown in FIG. 11C2, TRP #2 of 501_2 transmits an RS (1111_2). Terminal 502 receives the RS (1161_2) and, based on the reception status of the RS, determines the transmitting / receiving panel antenna (or receiving panel antenna based on the antenna module) based on the antenna module to be used when "terminal 502 receives the modulated signal transmitted from TRP #2 of 501_2 to terminal 502" (the antenna module is determined at the same time). (Note that the RS "transmitting RS (1111_2)" can be an RS for selecting the transmitting / receiving panel antenna (or receiving panel antenna based on the antenna module) based on the antenna module to be used for reception from the transmitting / receiving panel antennas (or receiving panel antennas based on the antenna module) based on the antenna module equipped in terminal 502 (and simultaneously selecting the antenna module).) Specific examples of RS transmission have already been described, so description will be omitted here.

[0659] A specific example of a transmitting / receiving panel antenna based on an antenna module (or a receiving panel antenna based on an antenna module) used when terminal 502 receives a modulated signal transmitted from TRP #2 of 501_2 to terminal 502 is shown in Figure 10C3 (or Figures 10B, 10C1, and 10C2). Alternatively, the modulated signal transmitted by the TRP may be received using a transmitting / receiving panel antenna based on multiple antenna modules (or a receiving panel antenna based on antenna modules).

[0660] For example, in Fig. 10C3, the transmitting and receiving panel antenna 2 based on the antenna module of 591_2 and the transmitting and receiving panel antenna 4 based on the antenna module of 591_4 are selected as the transmitting and receiving panel antenna based on the antenna module (or the receiving panel antenna based on the antenna module) to be used when "terminal 502 receives the modulated signal transmitted by TRP #2 of 501_2 to terminal 502". At this time, the antenna module is also selected.

[0661] In Fig. 10B, receiving panel antenna 3 based on the antenna module of 151_3 and receiving panel antenna 4 based on the antenna module of 151_4 are selected as the transmitting / receiving panel antennas based on the antenna modules (or receiving panel antennas based on the antenna modules) to be used when "terminal 502 receives the modulated signal transmitted by TRP #2 of 501_2 to terminal 502". At this time, the antenna modules are also selected.

[0662] In Fig. 10C1, the transmitting and receiving panel antenna 2 based on the antenna module of 591_2 is selected as the transmitting and receiving panel antenna based on the antenna module (or the receiving panel antenna based on the antenna module) to be used when "terminal 502 receives the modulated signal transmitted by TRP #2 of 501_2 to terminal 502." At this time, the antenna module is also selected.

[0663] In Fig. 10C2, the transmitting and receiving panel antenna 2 based on the antenna module of 591_2 and the transmitting and receiving panel antenna 4 based on the antenna module of 591_4 are selected as the transmitting and receiving panel antenna based on the antenna module (or the receiving panel antenna based on the antenna module) to be used when "terminal 502 receives the modulated signal transmitted by TRP #2 of 501_2 to terminal 502". At this time, the antenna module is also selected.

[0664] 11C2 is an example of communication between "TRP#2 of 501_2 and terminal 502", and communication between "TRP#2 of 501_2 and terminal 502" is not limited to this example. Also, although TRP#2 of 501_2 transmits RS, the name is not limited to this.

[0665] Figure 11C3 shows an example of a specific exchange between "TRP#2 of 501_2 and terminal 502" for "setting 1192_2 of 'transmitting panel antenna based on antenna module (or transmitting panel antenna of transmitting / receiving panel antenna based on antenna module)'" in Figure 11C1.

[0666] As shown in FIG. 11C3, terminal 502 transmits an RS (1171_2). TRP #2 of 501_2 receives the RS (1121_2) and, based on the reception status of the RS, generates information regarding the allocation of transmitting and receiving panel antennas (or transmitting panel antennas based on antenna modules) based on the antenna modules when terminal 502 transmits a modulated signal (1122_2). Then, TRP #2 of 501_2 transmits information regarding the allocation of transmitting and receiving panel antennas (or transmitting panel antennas based on antenna modules) based on the antenna modules when terminal 502 transmits a modulated signal (1123_2). Terminal 502 obtains this (above) information and determines the transmitting and receiving panel antennas (or transmitting panel antennas based on antenna modules) based on the antenna modules to be used when terminal 502 transmits a modulated signal to TRP #2 of 501_2. (Note that the RS of "Sending RS (1171_2)" can be said to be an RS for selecting a transmitting / receiving panel antenna (or a transmitting panel antenna based on an antenna module) based on an antenna module to be used for transmission from the transmitting / receiving panel antennas (or transmitting panel antennas based on an antenna module) based on the antenna module equipped in terminal 502 (and simultaneously selecting the antenna module).) Specific examples of transmitting RS have already been explained using Figures 9A1, 9A2, and 9A3, so explanation will be omitted.

[0667] At this time, the "determination of the transmitting and receiving panel antenna based on the antenna module (or the transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal to TRP#2 of 501_2" may be performed by terminal 502 or by TRP#2 of 501_2.

[0668] For example, when TRP#2 of 501_2 "determines the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal to TRP#2 of 501_2," the "information regarding the allocation of the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) when "terminal 502 transmits a modulated signal"" will include information regarding the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when "terminal 502 transmits a modulated signal."

[0669] When terminal 502 "determines the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal to TRP #2 of 501_2," terminal 502 obtains "information regarding the allocation of transmitting and receiving panel antennas (or transmitting panel antennas based on the antenna module) to be used when terminal 502 transmits a modulated signal," and determines the transmitting and receiving panel antenna (or transmitting panel antenna based on the antenna module) to be used when terminal 502 transmits a modulated signal.

[0670] A specific example of the "transmitting / receiving panel antenna (or transmitting panel antenna based on an antenna module) used by terminal 502 when transmitting a modulated signal to TRP #2 of 501_2" is shown in Figure 10C3 (or Figures 10A, 10C1, and 10C2). Alternatively, terminal 502 may transmit modulated signals to multiple TRPs using a transmit / receive panel antenna (or transmitting panel antenna based on an antenna module) based on multiple antenna modules.

[0671] For example, in Fig. 10C3, the transmitting / receiving panel antenna 2 based on the antenna module of 591_2 and the transmitting / receiving panel antenna 4 based on the antenna module of 591_4 are selected as the "transmitting / receiving panel antenna based on the antenna module (or the transmitting panel antenna based on the antenna module) used when terminal 502 transmits a modulated signal to TRP #2 of 501_2." At this time, the antenna modules are also selected.

[0672] 10A, the transmitting panel antenna 2 based on the antenna module of 106_2 and the transmitting panel antenna 4 based on the antenna module of 106_4 are selected as the "transmitting and receiving panel antennas based on the antenna module (or transmitting panel antennas based on the antenna module) used when terminal 502 transmits a modulated signal to TRP #2 of 501_2." At this time, the antenna modules are also selected.

[0673] In Fig. 10C1, the transmitting and receiving panel antenna 2 based on the antenna module of 591_2 and the transmitting and receiving panel antenna 4 based on the antenna module of 591_4 are selected as "the transmitting and receiving panel antenna based on the antenna module (or the transmitting panel antenna based on the antenna module) used when terminal 502 transmits a modulated signal to TRP #2 of 501_2." At this time, the antenna modules are also selected.

[0674] In Fig. 10C2, the transmitting and receiving panel antenna 2 based on the antenna module of 591_2 is selected as the "transmitting and receiving panel antenna based on the antenna module (or transmitting panel antenna based on the antenna module) used when terminal 502 transmits a modulated signal to TRP #2 of 501_2." At this time, the antenna module is also selected.

[0675] This causes terminal 502 to determine a transmission method (1172_2), such as a transmit / receive panel antenna based on the antenna module (or a transmit panel antenna based on the antenna module) to be used when transmitting a modulated signal to TRP #2 of 501_2.

[0676] 11C3 is an example of communication between "TRP#2 of 501_2 and terminal 502," and communication between "TRP#2 of 501_2 and terminal 502" is not limited to this example. Also, although terminal 502 transmits RS, the name of the RS is not limited to this.

[0677] As shown in FIG. 11B1, after setting 1191_1 of the "receiving panel antenna based on the antenna module (or the receiving panel antenna of the transmitting and receiving panel antenna based on the antenna module)" and setting 1192_1 of the "transmitting panel antenna based on the antenna module (or the transmitting panel antenna of the transmitting and receiving panel antenna based on the antenna module)," TRP#1 of 501_1 and terminal 502 will "perform data communication 1193_1 between TRP#1 of 501_1 and terminal 502."

[0678] As shown in FIG. 11C1, after setting 1191_2 of the "receiving panel antenna based on the antenna module (or the receiving panel antenna of the transmitting and receiving panel antenna based on the antenna module)" and setting 1192_2 of the "transmitting panel antenna based on the antenna module (or the transmitting panel antenna of the transmitting and receiving panel antenna based on the antenna module)," TRP#2 of 501_2 and terminal 502 will "perform data communication 1193_2 between TRP#2 of 501_2 and terminal 502."

[0679] In "Data communication 1193_1 between TRP#1 of 501_1 and terminal 502" and "Data communication 1193_2 between TRP#2 of 501_2 and terminal 502," terminal 502 transmits an uplink modulated signal to TRP#1 of 501_1, and terminal 502 transmits an uplink modulated signal to TRP#2 of 501_2.

[0680] Then, TRP#1 of 501_1 transmits a downlink modulated signal to terminal 502, and TRP#2 of 501_2 transmits a downlink modulated signal to terminal 502.

[0681] At this time, it is assumed that the uplink SDM method, the uplink TDM method, and the uplink FDM method can be applied as the transmission method of "the uplink modulated signal that the terminal 502 transmits to the TRP #1 of 501_1 and the uplink modulated signal that the terminal 502 transmits to the TRP #2 of 501_2". Note that the system consisting of "TRP #1 of 501_1, TRP #2 of 501_2" and "terminal 502" may switch or use "uplink SDM method, uplink TDM method, uplink FDM method" depending on the communication situation, communication environment, the capabilities of each device, etc. The specific operation of the uplink SDM method, uplink TDM method, and uplink FDM method has already been explained, so the explanation will be omitted.

[0682] In addition, it is assumed that the downlink SDM method, the downlink TDM method, and the downlink FDM method can be applied as the transmission method of "the downlink modulated signal transmitted by TRP #1 of 501_1 and the downlink modulated signal transmitted by TRP #2 of 501_2". Note that the system consisting of "TRP #1 of 501_1, TRP #2 of 501_2" and "terminal 502" may switch or use "downlink SDM method, downlink TDM method, downlink FDM method" depending on the communication situation, communication environment, the capabilities of each device, etc. The specific operation of the downlink SDM method, downlink TDM method, and downlink FDM method has already been explained, so the explanation will be omitted.

[0683] In this way, the terminal 502 can communicate with multiple TRPs, thereby improving data transmission efficiency, and by using the antenna module, the terminal and TRP can achieve the effect of improving the data reception quality.

[0684] As examples of communication between "terminal 502 having the configuration of Figures 1A, 1B, and 1C" and "TRP#1 of 501_1, TRP#2 of 501_2," Figures 5A, 5B, 5C, 5D, 10A, 10B, 10C1, 10C2, and 10C3 are shown, but the state of communication between "terminal 502 having the configuration of Figures 1A, 1B, and 1C" and "TRP#1 of 501_1, T...

Claims

1. A wireless communication device comprising: a plurality of panel antennas; and a control unit that determines, from the plurality of panel antennas, panel antennas that will communicate with a plurality of transmitting / receiving points, wherein the panel antennas that communicate with the transmitting / receiving points each communicate with a different transmitting / receiving point; each of the plurality of panel antennas comprises a plurality of antenna modules; and the control unit selects an antenna module to be used for communication from the plurality of antenna modules comprised by the determined panel antennas.

2. The wireless communication device according to claim 1, wherein the control unit selects an antenna module based on reference signals transmitted from the plurality of transmission / reception points.

3. The wireless communication device according to claim 1, wherein the control unit receives information for selecting an antenna module from the plurality of transmission / reception points.

4. The wireless communication device according to claim 1, wherein the plurality of panel antennas are constituted by one type of panel antenna from among a plurality of types.

5. The wireless communication device according to claim 4, wherein all or part of the plurality of panel antennas configured by one type are used.

6. The wireless communication device according to claim 1, wherein the control unit performs dynamic switching.

7. The wireless communication device according to claim 6, wherein the control unit does not perform dynamic switching when a single frequency network (SFN) is implemented.

8. The wireless communication device according to claim 6, wherein the control unit reports a capability regarding the dynamic switching.

9. A wireless communication method for a wireless communication device equipped with multiple panel antennas, comprising: determining, from the multiple panel antennas, panel antennas that will communicate with multiple transmission / reception points; each panel antenna that communicates with the transmission / reception points communicating with a different transmission / reception point; each of the multiple panel antennas having multiple antenna modules; and selecting an antenna module to be used for communication from the multiple antenna modules equipped in the determined panel antennas.

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