Information transmission method and apparatus, and device and non-transitory readable storage medium

Abstract

Provided in the present disclosure are an information transmission method and apparatus, and a device and a non-transitory readable storage medium. The information transmission method comprises: measuring at least two reconfigurable intelligent surface (RIS) measurement signals, so as to obtain measurement information, wherein the RIS measurement signals are associated with an RIS device or an RIS beam in a first area, and the measurement information comprises channel information corresponding to the RIS measurement signals, or channel information corresponding to at least one RIS measurement signal and interference information corresponding to at least one RIS measurement signal; and sending the measurement information to a base station.

Description

Information transmission method, device, equipment and non-transitory readable storage medium

[0001] The present disclosure claims priority to the Chinese patent application No. 202411327468.1, filed on September 23, 2024, and entitled "Information transmission method, device, equipment and non-transitory readable storage medium", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the field of communication technology, and in particular, to an information transmission method, device, equipment and non-transitory readable storage medium. BACKGROUND

[0003] In a wireless communication system based on a Reconfigurable Intelligence Surface (RIS), on the one hand, through the RIS device deployed between the base station and the terminal user, a line-of-sight link can be dynamically established on demand in a blind area or at the edge of a cell where the line-of-sight communication is not available or the signal quality is poor, so as to improve the network coverage quality and reduce the coverage blind area. On the other hand, a distributed multi-point transmission can be constructed by using the distributed RIS nodes to obtain higher diversity or multiplexing (and / or beamforming) gain. However, since the RIS is a passive device (cannot process the forwarded signal), the signal in the working frequency band is directly forwarded (such as transmission, reflection, etc.), and all signals arriving at the RIS will be forwarded. Therefore, in any of the above cases, for a multi-RIS multi-user equipment or terminal (User Equipment, UE) system, the signal forwarded by the RIS can be a useful signal for UE1, but it is an interference signal for UE2 (UE2 refers to other UEs except UE1), that is, the RIS can cause interference to non-target UEs (such as UE2).

[0004] Therefore, in the related art, in the multi-RIS multi-UE scenario, the RIS can cause interference to non-target UEs. SUMMARY

[0005] The present disclosure aims to provide an information transmission method, device, equipment and non-transitory readable storage medium to solve the problem that in the related art, in the multi-RIS multi-UE scenario, the RIS can cause interference to non-target UEs.

[0006] To solve the above technical problems, an information transmission method provided by an embodiment of the present disclosure is applied to a terminal, and the method comprises:

[0007] measure at least two RIS measurement signals to obtain measurement information; the RIS measurement signals are associated with a RIS device or a RIS beam in a first area; the measurement information comprises: channel information corresponding to the RIS measurement signals, or channel information corresponding to at least one of the RIS measurement signals and interference information corresponding to at least one of the RIS measurement signals;

[0008] send the measurement information to a base station.

[0009] In some embodiments, the measuring at least two RIS measurement signals to obtain measurement information comprises:

[0010] In a case where a serving RIS device or a serving RIS beam of the terminal is not determined, measuring at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signals;

[0011] In a case where a serving RIS device or a serving RIS beam of the terminal is determined, measuring at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signals corresponding to the serving RIS device or the serving RIS beam, and interference information corresponding to the RIS measurement signals corresponding to a non-serving RIS device or a non-serving RIS beam;

[0012] In a case where a candidate serving RIS device or a candidate serving RIS beam of the terminal is determined, measuring at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signals corresponding to the candidate serving RIS device or the candidate serving RIS beam, and interference information corresponding to the RIS measurement signals corresponding to a non-candidate serving RIS device or a non-candidate serving RIS beam.

[0013] In some embodiments, the measuring at least two RIS measurement signals to obtain measurement information comprises:

[0014] receiving and measuring at least two RIS measurement signals according to first transmission parameters of the RIS measurement signals indicated by first base station configuration information or first predefined information to obtain measurement information; wherein the first transmission parameters comprise at least one of a receiving occasion and a transmission manner;

[0015] And / or, the sending the measurement information to a base station comprises:

[0016] sending the measurement information to a base station according to reporting parameters of the measurement information indicated by second base station configuration information or second predefined information; wherein the reporting parameters comprise at least one of a reporting occasion and a reporting manner.

[0017] In some embodiments, the method further comprises:

[0018] receiving a first notification sent by the base station, the first notification being used to indicate a serving RIS device or a serving RIS beam, or being used to indicate a replacement of the serving RIS device or the serving RIS beam.

[0019] In some embodiments, the method further comprises:

[0020] receiving a second notification sent by the base station, the second notification being used to indicate a candidate serving RIS device or a candidate serving RIS beam;

[0021] The measurement on the at least two smart metasurface RIS measurement signals to obtain measurement information comprises:

[0022] According to the second notification, measurement is performed on at least two RIS measurement signals to obtain measurement information, the at least two RIS measurement signals being RIS measurement signals corresponding to the candidate serving RIS device or the candidate serving RIS beam.

[0023] The embodiments of the present disclosure further provide an information transmission method applied to a base station, comprising:

[0024] receiving measurement information sent by at least one terminal on at least two RIS measurement signals, the RIS measurement signals being associated with RIS devices or RIS beams in a first area, the measurement information comprising channel information corresponding to the RIS measurement signals, or channel information corresponding to at least one of the RIS measurement signals and interference information corresponding to at least one of the RIS measurement signals;

[0025] controlling RIS beamforming adjustment according to the measurement information.

[0026] In some embodiments, the controlling RIS beamforming adjustment according to the measurement information comprises:

[0027] In a case where the measurement information comprises channel information corresponding to the RIS measurement signals, at least one RIS device is selected as a serving RIS device of the terminal or at least one RIS beam is selected as a serving RIS beam of the terminal according to the channel information, and the at least one RIS beam selected respectively belongs to different RIS devices.

[0028] sending a first notification to the terminal and a third notification to other RIS devices; wherein the other RIS devices are RIS devices corresponding to other RIS measurement signals of the at least two RIS measurement signals except for a first RIS measurement signal, or RIS devices to which RIS beams corresponding to the other RIS measurement signals belong, the first RIS measurement signal being a RIS measurement signal corresponding to the serving RIS device or the serving RIS beam;

[0029] the first notification is used to indicate the serving RIS device or the serving RIS beam;

[0030] the third notification is used to indicate adjusting beamforming.

[0031] In some embodiments, the controlling of the RIS beamforming adjustment according to the measurement information comprises:

[0032] when the measurement information comprises the channel information corresponding to the serving RIS device or the serving RIS beam of the terminal and the interference information corresponding to the non-serving RIS device or the non-serving RIS beam, and the channel information meets the transmission requirement of the terminal, sending a third notification to a RIS device to which the non-serving RIS device or the non-serving RIS beam belongs according to the interference information; the third notification is used to indicate adjusting beamforming.

[0033] when the measurement information comprises the channel information corresponding to the serving RIS device of the terminal and the interference information corresponding to the non-serving RIS device, and the channel information does not meet the transmission requirement of the terminal, determining to adjust the serving RIS device according to the channel information and the interference information, and sending a third notification to the serving RIS device; the third notification is used to indicate adjusting beamforming; or determining to replace the serving RIS device according to the channel information and the interference information, and sending a first notification to the terminal, the first notification being used to indicate replacing the serving RIS device;

[0034] when the measurement information comprises the channel information corresponding to the serving RIS beam of the terminal and the interference information corresponding to the non-serving RIS beam, and the channel information does not meet the transmission requirement of the terminal, determining to adjust the serving RIS beam according to the channel information and the interference information, and sending a third notification to a RIS device to which the serving RIS beam belongs; the third notification is used to indicate adjusting beamforming; or determining to replace the serving RIS beam according to the channel information and the interference information, and sending a first notification to the terminal, the first notification being used to indicate replacing the serving RIS beam;

[0035] In a case where the measurement information includes the channel information corresponding to the candidate serving RIS device or the candidate serving RIS beam of the terminal and the interference information corresponding to the non-candidate serving RIS device or the non-candidate serving RIS beam, at least one RIS device is selected as the serving RIS device of the terminal from the candidate serving RIS device according to the channel information, or at least one RIS beam is selected as the serving RIS beam of the terminal from the candidate serving RIS beam according to the channel information; a first notification is sent to the terminal, and a third notification is sent to other RIS devices; wherein the other RIS devices are RIS devices corresponding to other RIS measurement signals except a first RIS measurement signal in the at least two RIS measurement signals, or RIS devices to which RIS beams corresponding to the other RIS measurement signals belong, the first RIS measurement signal being a RIS measurement signal corresponding to the candidate serving RIS device or the candidate serving RIS beam; the first notification is used to indicate the serving RIS device or the serving RIS beam; and the third notification is used to indicate to adjust beamforming.

[0036] In some embodiments, in a case where the first notification is used to indicate to replace the serving RIS device or the serving RIS beam, the controlling, according to the measurement information, the RIS beamforming adjustment further includes:

[0037] sending a second notification to the terminal, the second notification being used to indicate the candidate serving RIS device or the candidate serving RIS beam.

[0038] In some embodiments, the method further includes:

[0039] sending first base station configuration information and / or second base station configuration information to the terminal, the first base station configuration information being used to indicate first transmission parameters of the RIS measurement signal, and the second base station configuration information being used to indicate reporting parameters of the measurement information; wherein the first transmission parameters include at least one of a receiving occasion and a transmission mode; and the reporting parameters include at least one of a reporting occasion and a reporting mode.

[0040] and / or sending third base station configuration information to the RIS device, the third base station configuration information being used to indicate second transmission parameters of the RIS measurement signal; wherein the second transmission parameters include at least one of a sending occasion and a transmission mode.

[0041] The embodiments of the present disclosure further provide an information transmission method applied to a RIS device, including:

[0042] sending a RIS measurement signal corresponding to the RIS device or a RIS beam of the RIS device; the RIS measurement signal being associated with the RIS device or the RIS beam in a first area.

[0043] In some embodiments, further comprising:

[0044] receiving a third notification sent by a base station; the third notification is used to indicate adjusting beamforming;

[0045] According to the third notification, adjusting the shaping parameter corresponding to the RIS device or the shaping parameter corresponding to the RIS beam of the RIS device.

[0046] In some embodiments, further comprising:

[0047] According to the adjusted shaping parameter, forwarding the information sent by at least one base station.

[0048] In some embodiments, the sending of the RIS measurement signal corresponding to the RIS device or the RIS beam of the RIS device comprises:

[0049] According to the second transmission parameter of the RIS measurement signal indicated by the third base station configuration information or the third predefined information, sending the RIS measurement signal corresponding to the RIS device or the RIS beam of the RIS device; wherein the second transmission parameter comprises at least one of the transmission occasion and the transmission mode.

[0050] The embodiments of the present disclosure also provide an information transmission device, which is a terminal, comprising a memory, a transceiver, and a processor:

[0051] The memory is used to store a computer program; the transceiver is used to transceive data under the control of the processor; and the processor is used to read the computer program in the memory and perform the following operations:

[0052] Measuring at least two intelligent metasurface RIS measurement signals to obtain measurement information; the RIS measurement signal is associated with the RIS device or the RIS beam in a first area; the measurement information comprises channel information corresponding to the RIS measurement signal, or channel information corresponding to at least one RIS measurement signal and interference information corresponding to at least one RIS measurement signal;

[0053] Through the transceiver, the measurement information is sent to a base station.

[0054] In some embodiments, the measuring of at least two intelligent metasurface RIS measurement signals to obtain measurement information comprises:

[0055] In the case where the serving RIS device or the serving RIS beam of the terminal is not determined, at least two RIS measurement signals are measured to obtain channel information corresponding to the RIS measurement signal;

[0056] In a case where a serving RIS device or a serving RIS beam of the terminal has been determined, measurements are performed on at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signals corresponding to the serving RIS device or the serving RIS beam, and interference information corresponding to the RIS measurement signals corresponding to a non-serving RIS device or a non-serving RIS beam.

[0057] In a case where a candidate serving RIS device or a candidate serving RIS beam of the terminal has been determined, measurements are performed on at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signals corresponding to the candidate serving RIS device or the candidate serving RIS beam, and interference information corresponding to the RIS measurement signals corresponding to a non-candidate serving RIS device or a non-candidate serving RIS beam.

[0058] In some embodiments, the performing measurements on at least two smart surface RIS measurement signals to obtain measurement information comprises:

[0059] The performing receiving and measurements on at least two RIS measurement signals to obtain measurement information comprises:

[0060] The sending the measurement information to the base station comprises:

[0061] The sending the measurement information to the base station comprises:

[0062] In some embodiments, the operations further comprise:

[0063] The receiving, by the transceiver, a first notification sent by the base station, the first notification being used to indicate a serving RIS device or a serving RIS beam, or being used to indicate a change of a serving RIS device or a serving RIS beam.

[0064] In some embodiments, the operations further comprise:

[0065] The receiving, by the transceiver, a second notification sent by the base station, the second notification being used to indicate a candidate serving RIS device or a candidate serving RIS beam.

[0066] The performing measurements on at least two smart surface RIS measurement signals to obtain measurement information comprises:

[0067] According to the second notification, measurement is performed on at least two RIS measurement signals to obtain measurement information; the at least two RIS measurement signals are RIS measurement signals corresponding to the candidate serving RIS device or the candidate serving RIS beam.

[0068] The embodiments of the present disclosure further provide an information transmission device, which is a base station and includes a memory, a transceiver, and a processor.

[0069] The memory is configured to store a computer program; the transceiver is configured to transceive data under control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations:

[0070] The transceiver receives measurement information of at least two RIS measurement signals sent by at least one terminal; the RIS measurement signals are associated with RIS devices or RIS beams in a first area; and the measurement information includes channel information corresponding to the RIS measurement signals, or channel information corresponding to at least one of the RIS measurement signals and interference information corresponding to the at least one of the RIS measurement signals.

[0071] According to the measurement information, RIS beamforming adjustment is controlled.

[0072] In some embodiments, the controlling of the RIS beamforming adjustment according to the measurement information includes:

[0073] In a case where the measurement information includes the channel information corresponding to the RIS measurement signals, at least one RIS device is selected as a serving RIS device of the terminal or at least one RIS beam is selected as a serving RIS beam of the terminal according to the channel information; and the at least one RIS beam belongs to different RIS devices respectively.

[0074] A first notification is sent to the terminal, and a third notification is sent to other RIS devices; the other RIS devices are RIS devices corresponding to other RIS measurement signals except a first RIS measurement signal in the at least two RIS measurement signals, or RIS devices to which RIS beams corresponding to the other RIS measurement signals belong, and the first RIS measurement signal is a RIS measurement signal corresponding to the serving RIS device or the serving RIS beam;

[0075] The first notification is used to indicate the serving RIS device or the serving RIS beam.

[0076] The third notification is used to indicate adjustment of beamforming.

[0077] In some embodiments, the controlling of the RIS beamforming adjustment according to the measurement information includes:

[0078] In a case where the measurement information comprises the channel information corresponding to a serving RIS device or a serving RIS beam of the terminal and the interference information corresponding to a non-serving RIS device or a non-serving RIS beam, and the channel information satisfies the transmission requirement of the terminal, a third notification is sent to an RIS device to which the non-serving RIS device or the non-serving RIS beam belongs according to the interference information, the third notification being used to instruct to adjust beamforming;

[0079] In a case where the measurement information comprises the channel information corresponding to a serving RIS device of the terminal and the interference information corresponding to a non-serving RIS device, and the channel information does not satisfy the transmission requirement of the terminal, a serving RIS device is determined according to the channel information and the interference information, and a third notification is sent to the serving RIS device, the third notification being used to instruct to adjust beamforming; or a serving RIS device is determined to be replaced according to the channel information and the interference information, and a first notification is sent to the terminal, the first notification being used to instruct to replace the serving RIS device;

[0080] In a case where the measurement information comprises the channel information corresponding to a serving RIS beam of the terminal and the interference information corresponding to a non-serving RIS beam, and the channel information does not satisfy the transmission requirement of the terminal, a serving RIS beam is determined according to the channel information and the interference information, and a third notification is sent to an RIS device to which the serving RIS beam belongs, the third notification being used to instruct to adjust beamforming; or a serving RIS beam is determined to be replaced according to the channel information and the interference information, and a first notification is sent to the terminal, the first notification being used to instruct to replace the serving RIS beam;

[0081] In a case where the measurement information includes the channel information corresponding to the candidate serving RIS device or the candidate serving RIS beam of the terminal and the interference information corresponding to the non-candidate serving RIS device or the non-candidate serving RIS beam, at least one RIS device is selected as the serving RIS device of the terminal from the candidate serving RIS device according to the channel information, or at least one RIS beam is selected as the serving RIS beam of the terminal from the candidate serving RIS beam according to the channel information; a first notification is sent to the terminal, and a third notification is sent to other RIS devices; wherein the other RIS devices are RIS devices corresponding to other RIS measurement signals except a first RIS measurement signal in the at least two RIS measurement signals, or RIS devices to which RIS beams corresponding to the other RIS measurement signals belong, the first RIS measurement signal being a RIS measurement signal corresponding to the candidate serving RIS device or the candidate serving RIS beam; the first notification is used to indicate the serving RIS device or the serving RIS beam; and the third notification is used to indicate to adjust beamforming.

[0082] In some embodiments, in a case where the first notification is used to indicate to replace the serving RIS device or the serving RIS beam, the controlling, according to the measurement information, the RIS beamforming adjustment further includes:

[0083] The transceiver is further configured to send, to the terminal, a second notification, the second notification being used to indicate the candidate serving RIS device or the candidate serving RIS beam.

[0084] In some embodiments, the operations further include:

[0085] The transceiver is further configured to send, to the terminal, first base station configuration information and / or second base station configuration information, the first base station configuration information being used to indicate first transmission parameters of the RIS measurement signal, and the second base station configuration information being used to indicate reporting parameters of the measurement information; wherein the first transmission parameters include at least one of a receiving occasion and a transmission manner; and the reporting parameters include at least one of a reporting occasion and a reporting manner.

[0086] And / or, the transceiver is further configured to send, to the RIS device, third base station configuration information, the third base station configuration information being used to indicate second transmission parameters of the RIS measurement signal; wherein the second transmission parameters include at least one of a sending occasion and a transmission manner.

[0087] Embodiments of the present disclosure further provide an information transmission device, the information transmission device being an RIS device, including a memory, a transceiver, and a processor.

[0088] a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

[0089] transmit, by the transceiver, a RIS measurement signal corresponding to the RIS device or a RIS beam of the RIS device; the RIS measurement signal is associated with the RIS device or the RIS beam in a first region.

[0090] In some embodiments, the operations further include:

[0091] receiving, by the transceiver, a third notification transmitted by a base station; the third notification is used to indicate adjustment of beamforming;

[0092] adjusting, according to the third notification, a beamforming parameter corresponding to the RIS device or a beamforming parameter corresponding to a RIS beam of the RIS device.

[0093] In some embodiments, the operations further include:

[0094] forwarding, by the transceiver, information transmitted by at least one base station according to the adjusted beamforming parameter.

[0095] In some embodiments, the transmitting the RIS measurement signal corresponding to the RIS device or the RIS beam of the RIS device includes:

[0096] transmitting the RIS measurement signal corresponding to the RIS device or the RIS beam of the RIS device according to a second transmission parameter of the RIS measurement signal indicated by third base station configuration information or third predefined information; wherein the second transmission parameter includes at least one of a transmission occasion and a transmission manner.

[0097] The present disclosure also provides an information transmission apparatus applied to a terminal, including:

[0098] a first measurement unit configured to measure at least two intelligent metasurface (RIS) measurement signals to obtain measurement information; the RIS measurement signal is associated with a RIS device or a RIS beam in a first region; the measurement information includes channel information corresponding to the RIS measurement signal, or channel information corresponding to at least one RIS measurement signal and interference information corresponding to at least one RIS measurement signal;

[0099] a first transmission unit configured to transmit the measurement information to a base station.

[0100] In some embodiments, the measuring the at least two RIS measurement signals to obtain the measurement information includes:

[0101] In a case where a serving RIS device or a serving RIS beam of the terminal is not determined, measurements are performed on at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signals;

[0102] In a case where a serving RIS device or a serving RIS beam of the terminal is determined, measurements are performed on at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signals corresponding to the serving RIS device or the serving RIS beam, and interference information corresponding to the RIS measurement signals corresponding to a non-serving RIS device or a non-serving RIS beam;

[0103] In a case where a candidate serving RIS device or a candidate serving RIS beam of the terminal is determined, measurements are performed on at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signals corresponding to the candidate serving RIS device or the candidate serving RIS beam, and interference information corresponding to the RIS measurement signals corresponding to a non-candidate serving RIS device or a non-candidate serving RIS beam.

[0104] In some embodiments, the performing measurements on at least two intelligent metasurface RIS measurement signals to obtain measurement information comprises:

[0105] performing receiving and measurements on at least two RIS measurement signals according to first transmission parameters of the RIS measurement signals indicated by first base station configuration information or first predefined information to obtain measurement information, wherein the first transmission parameters comprise at least one of a receiving occasion and a transmission manner;

[0106] And / or, the sending the measurement information to the base station comprises:

[0107] sending the measurement information to the base station according to reporting parameters of the RIS measurement signals indicated by second base station configuration information or second predefined information, wherein the reporting parameters comprise at least one of a reporting occasion and a reporting manner.

[0108] In some embodiments, the method further comprises:

[0109] receiving a first notification sent by the base station; the first notification is used to indicate a serving RIS device or a serving RIS beam, or is used to indicate a change of a serving RIS device or a serving RIS beam.

[0110] In some embodiments, the method further comprises:

[0111] receiving a second notification sent by the base station, the second notification is used to indicate a candidate serving RIS device or a candidate serving RIS beam;

[0112] The measurement is performed on at least two intelligent metasurface RIS measurement signals to obtain measurement information, including:

[0113] According to the second notification, measurement is performed on at least two RIS measurement signals to obtain measurement information; the at least two RIS measurement signals are RIS measurement signals corresponding to the candidate serving RIS device or the candidate serving RIS beam.

[0114] The embodiments of the present disclosure further provide an information transmission device applied to a base station, including:

[0115] The third receiving unit is configured to receive measurement information of at least two RIS measurement signals sent by at least one terminal; the RIS measurement signals are associated with RIS devices or RIS beams in a first area; and the measurement information includes channel information corresponding to the RIS measurement signals, or channel information corresponding to at least one RIS measurement signal and interference information corresponding to at least one RIS measurement signal;

[0116] The first control unit is configured to control RIS beamforming adjustment according to the measurement information.

[0117] In some embodiments, the control of the RIS beamforming adjustment according to the measurement information includes:

[0118] In the case where the measurement information includes the channel information corresponding to the RIS measurement signals, at least one RIS device is selected as a serving RIS device of the terminal or at least one RIS beam is selected as a serving RIS beam of the terminal according to the channel information; and the at least one selected RIS beam belongs to different RIS devices respectively.

[0119] The first notification is sent to the terminal, and a third notification is sent to other RIS devices; the other RIS devices are RIS devices corresponding to other RIS measurement signals except a first RIS measurement signal in the at least two RIS measurement signals, or RIS devices to which RIS beams corresponding to the other RIS measurement signals belong, and the first RIS measurement signal is a RIS measurement signal corresponding to the serving RIS device or the serving RIS beam;

[0120] The first notification is used to indicate the serving RIS device or the serving RIS beam.

[0121] The third notification is used to indicate adjustment of beamforming.

[0122] In some embodiments, the control of the RIS beamforming adjustment according to the measurement information includes:

[0123] In a case where the measurement information comprises the channel information corresponding to a serving RIS device or a serving RIS beam of the terminal and the interference information corresponding to a non-serving RIS device or a non-serving RIS beam, and the channel information satisfies the transmission requirement of the terminal, a third notification is sent to an RIS device to which the non-serving RIS device or the non-serving RIS beam belongs according to the interference information, the third notification being used to instruct to adjust beamforming.

[0124] In a case where the measurement information comprises the channel information corresponding to a serving RIS device of the terminal and the interference information corresponding to a non-serving RIS device, and the channel information does not satisfy the transmission requirement of the terminal, a serving RIS device is determined according to the channel information and the interference information, and a third notification is sent to the serving RIS device, the third notification being used to instruct to adjust beamforming; or a serving RIS device is determined according to the channel information and the interference information, and a first notification is sent to the terminal, the first notification being used to instruct to replace the serving RIS device.

[0125] In a case where the measurement information comprises the channel information corresponding to a serving RIS beam of the terminal and the interference information corresponding to a non-serving RIS beam, and the channel information does not satisfy the transmission requirement of the terminal, a serving RIS beam is determined according to the channel information and the interference information, and a third notification is sent to an RIS device to which the serving RIS beam belongs, the third notification being used to instruct to adjust beamforming; or a serving RIS beam is determined according to the channel information and the interference information, and a first notification is sent to the terminal, the first notification being used to instruct to replace the serving RIS beam.

[0126] In a case where the measurement information includes the channel information corresponding to the candidate serving RIS device or the candidate serving RIS beam of the terminal and the interference information corresponding to the non-candidate serving RIS device or the non-candidate serving RIS beam, at least one RIS device is selected as the serving RIS device of the terminal from the candidate serving RIS device according to the channel information, or at least one RIS beam is selected as the serving RIS beam of the terminal from the candidate serving RIS beam according to the channel information; a first notification is sent to the terminal, and a third notification is sent to other RIS devices; wherein the other RIS devices are RIS devices corresponding to other RIS measurement signals in the at least two RIS measurement signals except for a first RIS measurement signal, or RIS devices to which RIS beams corresponding to the other RIS measurement signals belong, the first RIS measurement signal being a RIS measurement signal corresponding to the candidate serving RIS device or the candidate serving RIS beam; the first notification is used to indicate the serving RIS device or the serving RIS beam; and the third notification is used to indicate to adjust beamforming.

[0127] In some embodiments, in a case where the first notification is used to indicate to replace the serving RIS device or the serving RIS beam, the controlling, according to the measurement information, the RIS beamforming adjustment further includes:

[0128] sending a second notification to the terminal, the second notification being used to indicate the candidate serving RIS device or the candidate serving RIS beam.

[0129] In some embodiments, the method further includes:

[0130] a second sending unit configured to send first base station configuration information and / or second base station configuration information to the terminal, the first base station configuration information being used to indicate first transmission parameters of the RIS measurement signal, and the second base station configuration information being used to indicate reporting parameters of the measurement information; wherein the first transmission parameters include at least one of a receiving occasion and a transmission mode; and the reporting parameters include at least one of a reporting occasion and a reporting mode.

[0131] and / or a third base station configuration information is sent to the RIS device, the third base station configuration information being used to indicate second transmission parameters of the RIS measurement signal; wherein the second transmission parameters include at least one of a sending occasion and a transmission mode.

[0132] The embodiments of the present disclosure further provide an information transmission apparatus applied to a RIS device, including:

[0133] a third sending unit configured to send a RIS measurement signal corresponding to the RIS device or a RIS beam of the RIS device; the RIS measurement signal is associated with the RIS device or the RIS beam in a first area.

[0134] In some embodiments, the method further comprises:

[0135] a fourth receiving unit configured to receive a third notification sent by a base station; the third notification is used to indicate adjustment of beamforming;

[0136] a first adjusting unit configured to adjust, according to the third notification, a beamforming parameter corresponding to the RIS device or a beamforming parameter corresponding to a RIS beam of the RIS device.

[0137] In some embodiments, the method further comprises:

[0138] a fourth sending unit configured to forward information sent by at least one base station according to the adjusted beamforming parameter.

[0139] In some embodiments, the sending of the RIS measurement signal corresponding to the RIS device or the RIS beam of the RIS device comprises:

[0140] sending the RIS measurement signal corresponding to the RIS device or the RIS beam of the RIS device according to a second transmission parameter of the RIS measurement signal indicated by third base station configuration information or third predefined information; wherein the second transmission parameter comprises at least one of a transmission occasion and a transmission mode.

[0141] The embodiments of the present disclosure also provide a non-transitory readable storage medium, which stores a program for causing a processor to execute the information transmission method of the terminal side, the base station side or the RIS device side.

[0142] The above technical solutions of the present disclosure have the following beneficial effects:

[0143] In the above scheme, the information transmission method obtains measurement information by measuring at least two intelligent metasurface RIS measurement signals; the RIS measurement signal is associated with the RIS device or the RIS beam in a first area; the measurement information comprises channel information corresponding to the RIS measurement signal, or channel information corresponding to at least one RIS measurement signal and interference information corresponding to at least one RIS measurement signal; the measurement information is sent to a base station; the base station can adjust the beamforming of the overall or part of the RIS based on the measurement information to avoid the interference caused by the coverage of the non-target UE, which solves the problem that the RIS causes interference to the non-target UE in the related art in the multiple RIS and multiple UE scenario. BRIEF DESCRIPTION OF DRAWINGS

[0144] Fig. 1 is a schematic diagram of a wireless communication system architecture according to an embodiment of the present disclosure;

[0145] Fig. 2 is a multi-UE wireless communication system based on multi-RIS according to an embodiment of the present disclosure;

[0146] Fig. 3 is a schematic diagram of a method for information transmission according to an embodiment of the present disclosure;

[0147] Fig. 4 is a schematic diagram of a method for information transmission according to an embodiment of the present disclosure;

[0148] Fig. 5 is a schematic diagram of a method for information transmission according to an embodiment of the present disclosure;

[0149] Fig. 6 is a schematic diagram of an information transmission device according to an embodiment of the present disclosure;

[0150] Fig. 7 is a schematic diagram of an information transmission device according to an embodiment of the present disclosure;

[0151] Fig. 8 is a schematic diagram of an information transmission device according to an embodiment of the present disclosure;

[0152] Fig. 9 is a schematic diagram of an information transmission apparatus according to an embodiment of the present disclosure;

[0153] Fig. 10 is a schematic diagram of an information transmission apparatus according to an embodiment of the present disclosure;

[0154] Fig. 11 is a schematic diagram of an information transmission apparatus according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0155] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, and not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present disclosure.

[0156] In the embodiments of the present disclosure, the term "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. The character " / " generally represents a "or" relationship between the associated objects before and after it.

[0157] In the embodiments of the present disclosure, the term "multiple" means two or more, and other quantifiers are similar.

[0158] It is explained that the technical solutions provided by the embodiments of the present disclosure can be applied to various systems. For example, the applicable systems can be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, a long term evolution advanced (LTE-A) system, a universal mobile system (UMTS), a worldwide interoperability for microwave access (WiMAX) system, a 5th generation mobile communication technology (5G) new radio (NR) system and an evolved communication system thereof, a 6th generation mobile communication technology (6G) system, and the like. The various systems all include terminal devices and network devices. The system can also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), and the like.

[0159] FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present disclosure can be applied. The wireless communication system includes terminal devices and network devices.

[0160] The terminal device involved in the embodiments of the present disclosure can refer to a device that provides voice and / or data connectivity for a user, a handheld device with wireless connection function, or other processing devices connected to a wireless modem, etc. In different systems, the name of the terminal device can also be different, for example, in the 5G system or the 6G system, the terminal device can be called user equipment (UE). The wireless terminal device can be a USB storage device, other personal computer memory devices and a dongle, and can also communicate with one or more core networks (CN) through a radio access network (RAN). The wireless terminal device can be a mobile terminal device, such as a mobile phone (or called "cellular" phone) and a computer with a mobile terminal device, for example, it can be a portable, pocket, handheld, computer built-in or vehicle-mounted mobile device, which exchanges language and / or data with the radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), personal computers, tablet computers, machine type communication (MTC) terminal devices, etc. The wireless terminal device can also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, and a wireless access device and a router / modem that meet the limitations of the present definition, etc. The embodiments of the present disclosure are not limited.

[0161] The network device related to the embodiments of the present disclosure can be a base station, which can include a plurality of cells serving terminals. According to different application scenarios, the base station can also be referred to as an access point, or can be a device in an access network that communicates with wireless terminal devices through one or more sectors over an air interface, or other names. The network device can be used to exchange received air frames and Internet Protocol (IP) packets as a router between the wireless terminal device and the rest of the access network, which can include an Internet Protocol (IP) communication network. The network device can also coordinate the management of the properties of the air interface. For example, the network device related to the embodiments of the present disclosure can be a network device (Base Transceiver Station, BTS) in the Global System for Mobile Communications (GSM) or Code Division Multiple Access (CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (LTE) system, or a 5G base station (the next Generation Node B, gNB) in a next generation system, or a Home evolved Node B (HeNB), a relay node, a femto, a pico, a network test device, etc., which are not limited in the embodiments of the present disclosure. In some network structures, the network device can include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit can also be geographically separated.

[0162] The network device and the terminal device can each use one or more antennas for multi-input multi-output (MIMO) transmission, which can be single-user MIMO (SU-MIMO) or multiple-user MIMO (MU-MIMO). According to the shape and number of root antenna combinations, MIMO transmission can be two-dimensional MIMO (2D-MIMO), three-dimensional MIMO (3D-MIMO), full-dimensional MIMO (FD-MIMO), or massive-MIMO, or can be diversity transmission or precoding transmission or beamforming transmission, etc.

[0163] First, the contents related to the scheme provided by the embodiments of the present disclosure are introduced.

[0164] For a single RIS system, the coverage range or direction of the RIS can be fixed in a certain area statically or semi-statically, a fixed virtual link is established, and the system performance is improved. However, the following problems exist:

[0165] For a multi-UE wireless communication system based on multiple RISs as shown in FIG. 2, in addition to considering the coverage of the signal, the interference problem between multiple RISs and multiple UEs also needs to be considered. At present, there is only a coverage enhancement scheme for a single RIS single UE system, and there is no effective and feasible adjustment scheme for multiple RIS multiple UEs.

[0166] In addition, the coverage enhancement scheme for a single RIS or a single UE is not applicable to interference coordination adjustment in the case of multiple RISs and multiple UEs. For a multi-RIS multi-UE system, how to adjust the phase shift matrix of multiple RISs to provide fair and consistent services for multiple UEs (or improve cell capacity) is a problem that needs to be solved. To this end, the coverage range and direction of the RIS need to be reasonably adjusted to improve system performance and reduce interference conflicts.

[0167] Based on the above, the embodiments of the present disclosure provide an information transmission method, device, equipment and non-transitory readable storage medium to solve the problem that in the related art, multiple RISs and multiple UEs exist in the scene, and the RIS will cause interference to non-target UEs. The method, device, equipment and non-transitory readable storage medium are based on the same application concept. Since the principles of the method, device, equipment and non-transitory readable storage medium for solving the problem are similar, the implementation of the method, device, equipment and non-transitory readable storage medium can be mutually referred to, and the repeated parts will not be described here.

[0168] The information transmission method provided by the embodiments of the present disclosure is applied to a terminal, as shown in FIG. 3, and includes the following steps.

[0169] Step 31: measuring at least two intelligent metasurface (RIS) measurement signals to obtain measurement information; the RIS measurement signal is associated with an RIS device or an RIS beam in a first area; the measurement information includes channel information corresponding to the RIS measurement signal, or channel information corresponding to at least one RIS measurement signal and interference information corresponding to at least one RIS measurement signal.

[0170] Specifically, step 31 can include: measuring at least two intelligent metasurface (RIS) measurement signals to obtain measurement information; the RIS measurement signal is uniquely associated with an RIS device or an RIS beam in a first area; the measurement information includes channel information corresponding to each RIS measurement signal, or channel information corresponding to at least one RIS measurement signal and interference information corresponding to at least one RIS measurement signal, but is not limited thereto.

[0171] Wherein, the channel information can include at least one of reference signal receiving power (RSRP), azimuth of arrival (AOA), zenith angle of arrival (ZOA), rank indicator (RI), channel state information (CSI), and the like; and / or the interference information can include at least one of power, power ratio with a serving RIS measurement signal, RSRP, and the like, which are not limited herein.

[0172] Wherein, the first area can be a specific area, such as a cell or at least two adjacent cells, and the like; and / or the unique association means that the measurement signal is only used for the RIS device or the RIS beam to transmit in the first area for related measurement, but is not limited thereto.

[0173] In another implementation, the RIS measurement signal can also be associated with multiple RIS devices or multiple RIS beams in multiple areas, as long as it can support distinguishing which device or RIS beam in which area the terminal measures the measurement information from the measurement signal transmitted by, and / or the measurement information can include channel information corresponding to at least one RIS measurement signal, which is not limited herein.

[0174] Step 32: sending the above measurement information to a base station.

[0175] The base station can be a base station to which the RIS device belongs, but is not limited thereto.

[0176] The above information transmission method provided by the embodiments of the present disclosure can measure at least two RIS measurement signals to obtain measurement information. The RIS measurement signal is uniquely associated with one RIS device or one RIS beam in a first area. The measurement information includes channel information corresponding to each RIS measurement signal, or channel information corresponding to at least one RIS measurement signal and interference information corresponding to at least one RIS measurement signal. The measurement information is sent to the base station. The base station can adjust the beamforming of the overall or part of the RIS based on the measurement information to avoid interference caused by coverage to non-target UEs, thereby solving the problem that the RIS causes interference to non-target UEs in the related art in the multiple RIS and multiple UE scenario.

[0177] The above measurement of at least two RIS measurement signals to obtain measurement information includes: (1) in the case where the serving RIS device or the serving RIS beam of the terminal is not determined, measuring at least two RIS measurement signals to obtain channel information corresponding to each RIS measurement signal; (2) in the case where the serving RIS device or the serving RIS beam of the terminal is determined, measuring at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signal corresponding to the serving RIS device or the serving RIS beam, and interference information corresponding to the RIS measurement signal corresponding to the non-serving RIS device or the non-serving RIS beam; (3) in the case where the candidate serving RIS device or the candidate serving RIS beam of the terminal is determined, measuring at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signal corresponding to the candidate serving RIS device or the candidate serving RIS beam, and interference information corresponding to the RIS measurement signal corresponding to the non-candidate serving RIS device or the non-candidate serving RIS beam. In this way, the measurement information can be accurately obtained in multiple cases. The serving RIS device can be an RIS device currently providing services (forwarding signals sent by the base station to the terminal) to the terminal, and / or the serving RIS beam can be an RIS beam currently providing services (forwarding signals sent by the base station to the terminal) to the terminal, but is not limited thereto. For the above (1), in another embodiment, at least one RIS measurement signal corresponding to the channel information can be obtained in the case where the serving RIS device or the serving RIS beam of the terminal is not determined, which is not limited herein.

[0178] In the embodiments of the present disclosure, the measurement of the at least two RIS measurement signals to obtain the measurement information includes: receiving and measuring the at least two RIS measurement signals according to the first transmission parameter of the RIS measurement signal indicated by the first base station configuration information or the first predefined information to obtain the measurement information, wherein the first transmission parameter includes at least one of a receiving occasion and a transmission manner; and / or the sending of the measurement information to the base station includes: sending the measurement information to the base station according to the reporting parameter indicated by the second base station configuration information or the second predefined information, wherein the reporting parameter includes at least one of a reporting occasion and a reporting manner. In this way, the receiving measurement of the RIS measurement signal and / or the reporting of the measurement information can be realized based on network configuration or predefinition. The receiving occasion can include a time at which the terminal receives the RIS measurement signal; the transmission manner can include periodicity, semi-periodicity or aperiodicity; the reporting occasion can include a reporting time; and / or the reporting manner can indicate the reported information, such as the measurement information and the RIS index corresponding to the measurement information sorted according to a certain rule.

[0179] Further, the information transmission method can further include: receiving a first notification sent by the base station; the first notification is used to indicate (information of) a serving RIS device or a serving RIS beam, or is used to indicate (relevant information of) a replacement of the serving RIS device or the serving RIS beam; and performing a corresponding operation according to the first notification. In this way, the terminal can know the result of the RIS beamforming adjustment performed by the base station and perform relevant processing. The performing of the corresponding operation can include: performing data transmission using the serving RIS device or the serving RIS beam (i.e., performing data transmission with the base station using the RIS device or the RIS beam indicated in the notification; in addition, in a subsequent measurement process, the RIS device or the RIS beam indicated in the notification can be used as the serving RIS device or the serving RIS beam for measurement); or performing a replacement operation of the serving RIS device or the serving RIS beam, which is not limited herein. Of course, the step of performing the corresponding operation according to the first notification can also not be performed, which is not limited herein.

[0180] In the embodiments of the present disclosure, the information transmission method described above further includes: receiving a second notification sent by the base station, the second notification being used for indicating (information of) a candidate serving RIS device or a candidate serving RIS beam; and the measuring, according to the at least two RIS measurement signals, to obtain the measurement information includes: measuring, according to the second notification, the at least two RIS measurement signals to obtain the measurement information; and the two RIS measurement signals are RIS measurement signals corresponding to the candidate serving RIS device or the candidate serving RIS beam. In this way, the measurement of the RIS measurement signals corresponding to the candidate serving RIS device or the candidate serving RIS beam can be implemented, so as to support the base station to select the serving RIS device or the serving RIS beam.

[0181] The embodiments of the present disclosure further provide an information transmission method applied to a base station, as shown in FIG. 4, which includes the following steps:

[0182] Step 41: receiving measurement information sent by at least one terminal for at least two RIS measurement signals; the RIS measurement signals are associated with RIS devices or RIS beams in a first area; and the measurement information includes channel information corresponding to the RIS measurement signals, or channel information corresponding to at least one of the RIS measurement signals and interference information corresponding to at least one of the RIS measurement signals.

[0183] Specifically, step 41 can include: receiving measurement information sent by at least one terminal for at least two RIS measurement signals; the RIS measurement signals are uniquely associated with one RIS device or one RIS beam in a first area; and the measurement information includes channel information corresponding to each RIS measurement signal, or channel information corresponding to at least one of the RIS measurement signals and interference information corresponding to at least one of the RIS measurement signals, but is not limited thereto.

[0184] Wherein, the measurement information sent by each terminal can be measurement information for at least two RIS measurement signals, but is not limited thereto.

[0185] Step 42: controlling RIS beamforming adjustment according to the measurement information.

[0186] In another implementation, the RIS measurement signals can also be associated with multiple RIS devices or multiple RIS beams in multiple areas, as long as it can support distinguishing which device or which RIS beam in which area the terminal measures the measurement information sent by; and / or the measurement information can include channel information corresponding to at least one of the RIS measurement signals, which is not limited herein.

[0187] The information transmission method provided by the embodiments of the present disclosure receives measurement information of at least two RIS measurement signals sent by at least one terminal; the RIS measurement signal is uniquely associated with one RIS device or one RIS beam in a first area; the measurement information includes: channel information corresponding to each RIS measurement signal, or channel information corresponding to at least one RIS measurement signal and interference information corresponding to at least one RIS measurement signal; and the RIS beamforming adjustment is controlled according to the measurement information. The base station can adjust the overall or partial beam of the RIS based on the measurement information of the RIS measurement signal, so as to avoid the interference caused by the coverage of the non-target UE, and well solve the problem that the RIS causes interference to the non-target UE in the related art under the multiple RIS and multiple UE scenario.

[0188] In the method, the controlling the RIS beamforming adjustment according to the measurement information comprises: in a case where the measurement information comprises channel information corresponding to each of the RIS measurement signals, selecting at least one RIS device as a serving RIS device of the terminal or selecting at least one RIS beam as a serving RIS beam of the terminal according to the channel information; wherein the selected at least one RIS beam belongs to different RIS devices respectively; sending a first notification to the terminal and (in some embodiments) sending a third notification to other RIS devices; wherein the other RIS devices are RIS devices corresponding to RIS measurement signals other than a first RIS measurement signal in the at least two RIS measurement signals, or are RIS devices to which RIS beams corresponding to the other RIS measurement signals belong, and the first RIS measurement signal is a RIS measurement signal corresponding to the serving RIS device or the serving RIS beam; the first notification is used to indicate the serving RIS device or the serving RIS beam; and the third notification is used to indicate (related information of) adjustment of the beamforming. In this way, the selection of the serving RIS device or the serving RIS beam can be accurately realized and notified to the terminal, and the beamforming adjustment is performed on the non-serving RIS device or the non-serving RIS beam to reduce the coverage interference on the terminal. In the method, the selecting at least one RIS device as a serving RIS device of the terminal or selecting at least one RIS beam as a serving RIS beam of the terminal according to the channel information comprises: selecting at least one RIS device with the best channel state as the serving RIS device of the terminal or selecting at least one RIS beam with the best channel state as the serving RIS beam of the terminal according to the channel information, but the method is not limited thereto. In the method, the adjustment of the beamforming can comprise switching the beamforming (such as adjusting the shaping parameter or switching the beam), or shutting down the RIS device, or converting the beam into an absorbing beam or a diffuse scattering state, and the method is not limited thereto. In another embodiment, the selecting at least one RIS device as a serving RIS device of the terminal or selecting at least one RIS beam as a serving RIS beam of the terminal according to the channel information in a case where the measurement information comprises channel information corresponding to each of the RIS measurement signals can be implemented as: in a case where the measurement information comprises channel information corresponding to at least one of the RIS measurement signals, selecting at least one RIS device as a serving RIS device of the terminal or selecting at least one RIS beam as a serving RIS beam of the terminal according to the channel information, and the method is not limited thereto.

[0189] In the embodiments of the present disclosure, the control of the RIS beamforming adjustment according to the measurement information includes: (1) when the measurement information includes the channel information corresponding to the serving RIS device or the serving RIS beam of the terminal (i.e., the channel information corresponding to the serving RIS device or the channel information corresponding to the serving RIS beam) and the interference information corresponding to the non-serving RIS device or the non-serving RIS beam (i.e., the interference information corresponding to the non-serving RIS device or the interference information corresponding to the non-serving RIS beam), and the channel information meets the transmission requirement of the terminal, a third notification is sent to the RIS device to which the non-serving RIS device or the non-serving RIS beam belongs according to the interference information; the third notification is used to instruct to adjust the beamforming (in this way, the phase shift matrix of the non-serving RIS device or the non-serving RIS beam can be adjusted, and the interference of the non-serving RIS device or the non-serving RIS beam on the target UE is reduced); (2) when the measurement information includes the channel information corresponding to the serving RIS device of the terminal and the interference information corresponding to the non-serving RIS device, and the channel information does not meet the transmission requirement of the terminal, a third notification is sent to the serving RIS device according to the channel information and the interference information; the third notification is used to instruct to adjust the beamforming; or, a third notification is sent to the terminal according to the channel information and the interference information, and the third notification is used to instruct to replace the serving RIS device; (3) when the measurement information includes the channel information corresponding to the serving RIS beam of the terminal and the interference information corresponding to the non-serving RIS beam, and the channel information does not meet the transmission requirement of the terminal, a third notification is sent to the RIS device to which the serving RIS beam belongs according to the channel information and the interference information; the third notification is used to instruct to adjust the beamforming; or, a third notification is sent to the terminal according to the channel information and the interference information, and the third notification is used to instruct to replace the serving RIS beam; (4) when the measurement information includes the channel information corresponding to the candidate serving RIS device or the candidate serving RIS beam of the terminal and the interference information corresponding to the non-candidate serving RIS device or the non-candidate serving RIS beam, at least one RIS device is selected as the serving RIS device of the terminal from the candidate serving RIS device according to the channel information; or, at least one RIS beam is selected as the serving RIS beam of the terminal from the candidate serving RIS beam according to the channel information; a first notification is sent to the terminal, and a third notification is sent to other RIS devices;The other RIS devices are RIS devices corresponding to the other RIS measurement signals in the at least two RIS measurement signals except the first RIS measurement signal, or the RIS devices to which RIS beams corresponding to the other RIS measurement signals belong, and the first RIS measurement signal is an RIS measurement signal corresponding to the candidate serving RIS device or the candidate serving RIS beam; the first notification is used to indicate the serving RIS device or the serving RIS beam; and the third notification is used to indicate the adjustment of the beamforming. In this way, the RIS beamforming adjustment can be accurately implemented for multiple cases, the service quality of the serving RIS device or the serving RIS beam and the communication quality of the terminal are guaranteed, and the interference of the non-serving RIS device or the non-serving RIS beam on the target UE is reduced.

[0190] In the case where the terminal has multiple serving RIS devices, if some of the serving RIS devices do not meet the terminal demand and the non-serving RIS has an RIS device with an interference signal meeting the terminal demand, at least one RIS device with an interference signal meeting the UE service demand can be selected from the non-serving RIS as a candidate serving RIS device according to a predefined rule (such as the strongest interference signal) to replace the RIS device not meeting the terminal demand. Correspondingly, the step of determining to adjust the serving RIS device according to the channel information and the interference information can include: in the case where it is determined according to the channel information that there is a serving RIS device not meeting the terminal demand, determining to adjust the serving RIS device, and taking the serving RIS device not meeting the terminal demand as a first RIS device; determining a candidate serving RIS device according to the interference information as a second RIS device, and determining to replace the first RIS device with the second RIS device as the serving RIS device of the terminal; and / or in the case where the terminal has multiple serving RIS devices, if some of the serving RIS devices do not meet the terminal demand and the non-serving RIS has no RIS device with an interference signal meeting the terminal demand, the RIS device meeting the demand can be kept as the serving RIS, and the RIS device not meeting the demand is removed. Correspondingly, the step of determining to adjust the serving RIS device according to the channel information and the interference information can include: in the case where it is determined according to the channel information that there is a serving RIS device not meeting the terminal demand, determining to adjust the serving RIS device, and taking the serving RIS device not meeting the terminal demand as a first RIS device; in the case where no candidate serving RIS device meeting the terminal demand is obtained according to the interference information, directly adjusting the first RIS device to a non-serving RIS device of the terminal, and maintaining the serving RIS device meeting the terminal demand to continue to provide services for the terminal, but the application is not limited thereto.

[0191] There can be multiple service RIS beams, and if some do not meet the terminal requirements, the RIS device can also be adjusted (e.g., the RIS device where the service RIS beam is located is used as the service RIS device, and the RIS device where the non-service RIS beam is located is used as the non-service RIS device) to perform corresponding processing. For details, see the description of the above "case where the terminal has multiple service RIS devices". Here, it will not be repeated. In addition, the RIS device can remain unchanged, and the service RIS beam under the same RIS device can be switched. The specific process is as follows:

[0192] For the case where the terminal has multiple service RIS beams, if some of the service RIS beams do not meet the terminal requirements, and the non-service RIS beam has an interference signal that meets the terminal requirements, at least one RIS beam with an interference signal that meets the UE service requirements can be selected from the non-service RIS beam as a candidate service RIS beam according to a predefined rule (e.g., the strongest interference signal) to replace the RIS beam that does not meet the terminal requirements. Correspondingly, "determining to adjust the service RIS beam according to the channel information and the interference information" can include: in the case where it is determined according to the channel information that there is a service RIS beam that does not meet the terminal requirements, determining to adjust the service RIS beam, and taking the service RIS beam that does not meet the terminal requirements as the first RIS beam; determining the candidate service RIS beam as the second RIS beam according to the interference information, and determining to replace the first RIS beam with the second RIS beam as the service RIS beam of the terminal;

[0193] And / or, for the case that there are multiple serving RIS beams for the terminal, if there are some serving RIS beams that do not meet the terminal requirements and none of the non-serving RIS beams that do not interfere with the terminal meet the terminal requirements (i.e., the received measurement signal strengths of the non-serving RIS beams do not all meet the terminal service requirements), then one of the other RIS beams under the RIS device corresponding to the serving RIS beam that does not meet the terminal requirements can be selected as a candidate RIS beam for measurement at a time until all the other RIS beams under the RIS device are measured, and the other RIS beam with the strongest signal strength (or the other RIS beam with a signal strength greater than a threshold) is selected as a serving RIS beam to replace the serving RIS beam that does not meet the terminal requirements. Correspondingly, "determining to adjust the serving RIS beam according to the channel information and the interference information" can include: in the case that it is determined according to the channel information that there is a serving RIS beam that does not meet the terminal requirements, determining to adjust the serving RIS beam, and taking the serving RIS beam that does not meet the terminal requirements as a first RIS beam; determining a candidate serving RIS beam from the other RIS beams under the RIS device to which the first RIS beam belongs, as a third RIS beam, and determining to replace the first RIS beam with the third RIS beam as the serving RIS beam of the terminal; wherein "determining a candidate serving RIS beam from the other RIS beams under the RIS device to which the first RIS beam belongs, as a third RIS beam" can include: obtaining the signal strengths corresponding to the other RIS beams under the RIS device to which the first RIS beam belongs, and determining the other RIS beam with the strongest signal strength as the candidate serving RIS beam, as the third RIS beam (or, determining the other RIS beam (which is the other RIS beam under the RIS device to which the first RIS beam belongs) with a signal strength greater than a threshold as the candidate serving RIS beam, as the third RIS beam).

[0194] The operation of determining the candidate serving RIS beam from the non-serving RIS beam or the other RIS beam under the RIS device to which the first RIS beam belongs can be applied to other cases, which is not limited here.

[0195] In the embodiments of the present disclosure, in the case that the first notification is used to indicate the replacement of the serving RIS device or the serving RIS beam, the control of the RIS beamforming adjustment according to the measurement information further includes: sending a second notification to the terminal, the second notification being used to indicate (the information of) the candidate serving RIS device or the candidate serving RIS beam. In this way, the terminal can accurately measure the RIS measurement signal corresponding to the candidate serving RIS device or the candidate serving RIS beam, to support the base station to select the serving RIS device or the serving RIS beam.

[0196] Further, the information transmission method described above further includes: sending first base station configuration information and / or second base station configuration information to the terminal, the first base station configuration information being used to indicate first transmission parameters of the RIS measurement signal, and the second base station configuration information being used to indicate reporting parameters of the measurement information; wherein the first transmission parameters include at least one of a receiving occasion and a transmission mode; the reporting parameters include at least one of a reporting occasion and a reporting mode; and / or sending third base station configuration information to the RIS device, the third base station configuration information being used to indicate second transmission parameters of the RIS measurement signal; wherein the second transmission parameters include at least one of a sending occasion and a transmission mode. In this way, the receiving measurement of the RIS measurement signal and / or the reporting of the measurement information and / or the sending of the RIS measurement signal based on network configuration can be supported.

[0197] The embodiments of the present disclosure further provide an information transmission method, which is applied to an RIS device, as shown in FIG. 5, and includes the following steps:

[0198] Step 51: sending an RIS measurement signal corresponding to the RIS device or an RIS beam of the RIS device; the RIS measurement signal is uniquely associated with the RIS device or one RIS beam in a first area.

[0199] Specifically, step 51 can include: sending an RIS measurement signal corresponding to the RIS device or an RIS beam of the RIS device; the RIS measurement signal is uniquely associated with the RIS device or one RIS beam in a first area, but is not limited thereto.

[0200] In another implementation, the RIS measurement signal can also be associated with multiple RIS devices or multiple RIS beams in multiple areas, as long as it can support distinguishing which device or which RIS beam in which area the terminal measurement information is obtained from the measurement signal, which is not limited herein.

[0201] The information transmission method provided by the embodiments of the present disclosure can support the terminal to measure the RIS measurement signal and obtain the measurement information to send to the base station, and further support the base station to adjust the beamforming of the whole or part of the RIS beams based on the measurement information of the RIS measurement signal, so as to avoid the interference caused by the coverage of the non-target UE, and well solve the problem that the RIS causes interference to the non-target UE in the related art in the multiple RIS and multiple UE scenario.

[0202] Further, the information transmission method described above further includes: receiving a third notification sent by the base station; the third notification is used to indicate adjustment of beamforming; and adjusting the shaping parameter corresponding to the RIS device or the shaping parameter corresponding to the RIS beam of the RIS device according to the third notification. In this way, interference caused by coverage to non-target terminals can be avoided as much as possible. The shaping parameter can include at least one of the coverage range and the coverage direction, and the like, which is not limited herein.

[0203] In the embodiments of the present disclosure, the information transmission method described above further includes: forwarding information sent by at least one base station according to the adjusted shaping parameter. In this way, the normal implementation of the RIS device function can be supported, and specifically, the information and / or signal sent by the base station can be forwarded using the adjusted beamforming, which is not limited herein.

[0204] The sending of the RIS measurement signal corresponding to the RIS device or the RIS beam of the RIS device includes: sending the RIS measurement signal corresponding to the RIS device or the RIS beam of the RIS device according to the second transmission parameter of the RIS measurement signal indicated by the third base station configuration information or the third predefined information; and the second transmission parameter includes at least one of the transmission occasion and the transmission mode.

[0205] In this way, the sending of the RIS measurement signal based on network configuration or predefinition can be implemented. The transmission occasion can include the time of sending the RIS measurement signal; and / or the transmission mode can include periodicity, semi-periodicity, or aperiodicity, and the like, which is not limited herein.

[0206] It is stated herein that the related content between the terminal side, the base station side, and the RIS device side can be mutually referred to, and the repeated parts will not be described herein.

[0207] The information transmission method provided by the embodiments of the present disclosure is described below.

[0208] To solve the above technical problems, the embodiment of the present disclosure provides an information transmission method, which can be specifically implemented as a multi-RIS multi-UE adjustment scheme. A measurement signal is periodically transmitted by a RIS, a UE performs measurement and reports a base station, and the base station determines the phase shift matrix (i.e., beamforming) of the RIS according to the measurement signal reported by the UE, so as to control (e.g., adjust) the coverage range or coverage direction of the RIS, thereby avoiding interference between different UEs or cells. The present scheme mainly involves: each RIS transmits a measurement signal at a RIS granularity or a beam granularity (corresponding to the above-mentioned RIS device or the RIS beam of the above-mentioned RIS device corresponding to the RIS measurement signal); the UE obtains channel information, or channel information and interference information, by measuring the signal, and reports the base station (corresponding to the above-mentioned measuring the at least two intelligent metasurface RIS measurement signals to obtain measurement information; the measurement information includes: channel information corresponding to each RIS measurement signal, or channel information corresponding to at least one RIS measurement signal and interference information corresponding to at least one RIS measurement signal; and sending the measurement information to the base station). The base station determines the phase shift matrix (i.e., beamforming) of the RIS according to the information reported by at least one UE, adjusts the coverage range and / or coverage direction of the RIS by adjusting the phase shift matrix of the RIS, thereby avoiding interference between different UEs or cells; corresponding to the above-mentioned receiving the measurement information sent by at least one terminal for at least two RIS measurement signals; and controlling the RIS beamforming adjustment according to the measurement information.

[0209] Among them, the present scheme assumes that the RIS can transmit a measurement signal by itself or a controller, such as the following several possible schemes:

[0210] 1. Each RIS has a controller, and the RIS controller can transmit a measurement signal. The measurement signal is uniquely associated with the RIS or RIS beam in a specific area (e.g., a cell or at least two adjacent cells); corresponding to the above-mentioned RIS measurement signal is uniquely associated with the above-mentioned RIS device or one of the above-mentioned RIS beams in the first area.

[0211] (1) For the signal transmitted by the RIS controller, there are two possibilities: one is to send directly, and the other is to forward through the RIS. The former needs to consider the coverage direction or range of the controller transmitting signal, which needs to be basically consistent with the coverage direction or range of the RIS forwarding signal; the subsequent needs to design the deployment position of the controller to avoid affecting the reception or forwarding of the base station signal.

[0212] 2. Alternatively, the RIS itself may have a simple signal transmission function, capable of sending measurement signals, such as a reconfigurable distributed antenna and reflector (RDARS). The RSARS can be connected to a remote radio unit (RRU) via a control circuit switching switch. When the RSARS is connected to the RRU, it has a signal transmission function.

[0213] 3. Another approach is for the RIS to modulate the signal it is forwarding when it is transmitting the signal from the base station, for example, by adding a specific phase shift. This can be understood as the RIS adding a phase shift to the overall incident signal, which is equivalent to Binary Phase Shift Keying (BPSK): the incident signal is used as the fundamental wave, and it is modulated. The modulation carries additional information as a measurement signal associated with the RIS or the RIS beam.

[0214] The transmission of measurement signals and the reporting of measurement information by the UE can be handled according to the following rules:

[0215] 1. The measurement signal transmitted by the RIS (e.g., a single-tone signal, a specific sequence (such as a pseudo-random (gold) code of a certain length)) is uniquely associated with the RIS within a certain range or specific area (e.g., a cell or two or three adjacent cells); correspondingly, the RIS measurement signal is uniquely associated with a RIS device or a RIS beam within the first area. For example, the measurement signal sequence transmitted by RIS1 is "10001001", the measurement signal sequence transmitted by RIS2 is "10001011", and so on.

[0216] 2. The timing of RIS signal transmission is configured by the base station or determined according to predefined rules. Corresponding to the second transmission parameters of the RIS measurement signal indicated by the third base station configuration information or the third predefined information, the RIS measurement signal corresponding to the RIS device or the RIS beam of the RIS device is transmitted. The second transmission parameters include at least one of transmission timing and transmission mode. The predefined rules may include periodic, semi-periodic, and aperiodic transmission of measurement signals, with the transmission time fixed at the nth slot of a certain frame. For example, periodic transmission means periodically transmitting in the nth slot of multiple frames.

[0217] 3、The base station and the UE are known (network side (protocol) pre-defined) RIS sending measurement signal occasion; wherein, the RIS sending measurement signal occasion can also be notified by the base station to the UE (i.e. the base station configuration); corresponding to the first transmission parameter of the RIS measurement signal indicated according to the first base station configuration information or the first predefined information, at least two RIS measurement signals are received and measured, and the measurement information is obtained; wherein, the first transmission parameter includes at least one of the receiving occasion and the transmission mode.

[0218] 4、UE reporting measurement information rules: UE reporting time, reporting mode, etc. (reporting parameters) are configured by the base station or predefined; corresponding to the reporting parameter indicated according to the second base station configuration information or the second predefined information, the measurement information is sent to the base station; wherein, the reporting parameter includes at least one of the reporting occasion and the reporting mode.

[0219] (1) The occasion of UE reporting measurement information can be configured by the base station or determined according to the predefinition, for example, the UE reports on the next slot after receiving the measurement signal.

[0220] (2) The UE reporting measurement information mode can be configured by the base station or determined according to the predefinition, for example, the UE sorts according to the channel state from good to bad according to the base station configuration, and reports the corresponding RIS index (the index is arranged according to the above-mentioned sorting and reported); or, the UE reports the channel information of the service RIS and the interference information of the non-service RIS according to the predefined rule.

[0221] Among them, the service RIS means the RIS that is currently providing service (such as forwarding the signal sent by the base station to the UE) for the UE; the non-service RIS means the RIS that does not provide service for the UE (such as forwarding the signal sent by the base station to other UEs).

[0222] The following is an example of the operation involved in this scheme from the RIS, UE and base station.

[0223] RIS side:

[0224] 1、RIS according to base station configuration or predefined rule sends measurement signal; corresponding to the second transmission parameter of the RIS measurement signal indicated according to the third base station configuration information or the third predefined information, the RIS measurement signal corresponding to the RIS device or the RIS beam of the RIS device is sent; wherein, the second transmission parameter includes at least one of the sending occasion and the transmission mode;

[0225] 2. The RIS adjusts the phase shift matrix according to the base station configuration to forward the signal sent by the base station; corresponds to the third notification sent by the receiving base station; the third notification is used to indicate the adjustment of the beamforming; according to the third notification, the adjustment of the corresponding beamforming parameter of the RIS device or the RIS beam of the RIS device is adjusted; according to the adjusted beamforming parameter, at least one base station sends the information. Wherein, "RIS adjusts the phase shift matrix according to the base station configuration to forward the signal sent by the base station", which can include: RIS adjusts the phase shift matrix according to the time information (i.e. transmission opportunity) in the base station configuration and forwards the signal sent by the base station; or, RIS adjusts the phase shift matrix according to the base station configuration and the pre-defined time information (i.e. pre-defined transmission opportunity) and forwards the signal sent by the base station, but not limited to this.

[0226] UE side:

[0227] Step 0: (in some embodiments) UE receives base station configuration information or notification information. For example: in the scenario of switching RIS determined by the base station according to the measurement information reported by the UE, the base station can notify the candidate RIS to the UE; subsequently, the UE can measure the candidate RIS after receiving the base station notification, and obtain the channel information of the candidate RIS.

[0228] Step 1: UE receives RIS measurement signal according to base station configuration or pre-defined rule at RIS measurement signal receiving opportunity to measure, corresponding to the first transmission parameter of the RIS measurement signal indicated by the first base station configuration information or the first pre-defined information, at least two RIS measurement signals are received and measured to obtain measurement information; wherein, the first transmission parameter includes at least one of the receiving opportunity and the transmission mode;

[0229] Specifically, the measurement behavior can include the following two kinds:

[0230] 1) In the case that the UE does not determine the serving RIS, measure all received RIS measurement signals to obtain channel information (such as at least one of reference signal receiving power (RSRP), azimuth of arrival (AOA), zenith angle of arrival (ZOA), rank indicator (RI), channel state information (CSI) and other information); corresponding to the above in the case that the terminal's serving RIS device or serving RIS beam is not determined, at least two RIS measurement signals are measured to obtain the channel information corresponding to each RIS measurement signal.

[0231] 2) In the case that UE determines the serving RIS, the UE performs at least one of the following operations:

[0232] a) The UE measures the measurement signals of the serving RIS to obtain the channel information (e.g., at least one of RSRP, AOA, ZOA, RI, CSI, etc.) and measures the measurement signals of the non-serving RIS to obtain the interference information (e.g., at least one of power, power ratio to the serving RIS measurement signal, RSRP, etc.). In the case that the serving RIS device or the serving RIS beam corresponding to the above-mentioned at the terminal has been determined, the UE measures at least two RIS measurement signals to obtain the channel information corresponding to the RIS measurement signal corresponding to the above-mentioned serving RIS device or the serving RIS beam and the interference information corresponding to the RIS measurement signal corresponding to the non-serving RIS device or the non-serving RIS beam.

[0233] b) The UE measures the measurement signals of the candidate (serving) RIS to obtain the candidate RIS channel information and measures the measurement signals of the non-candidate (serving) RIS to obtain the interference information. In the case that the candidate serving RIS device or the candidate serving RIS beam corresponding to the above-mentioned at the terminal has been determined, the UE measures at least two RIS measurement signals to obtain the channel information corresponding to the RIS measurement signal corresponding to the above-mentioned candidate serving RIS device or the candidate serving RIS beam and the interference information corresponding to the RIS measurement signal corresponding to the non-candidate serving RIS device or the non-candidate serving RIS beam.

[0234] Step 2: The UE reports the measurement information to the base station according to the base station configuration or the pre-defined rule. In the case that the reporting parameter is indicated according to the second base station configuration information or the second pre-defined information, the UE sends the measurement information to the base station. In the case of the two situations shown in Step 1, the information reported by the UE can include the following two possibilities:

[0235] 1) The UE reports the measurement information of all the received RIS measurement signals (i.e., the measurement results of multiple RIS) and the RIS index according to the base station configuration or the pre-defined rule, as shown in Table 1 below.

[0236] Table 1

[0237] 2) The UE reports the channel information (e.g., at least one of RSRP, AOA, ZOA, RI, CSI, etc.) of the serving RIS and the interference information (e.g., at least one of power, power ratio to the serving RIS measurement signal, RSRP, etc.) of the non-serving RIS to the UE according to the base station configuration or the pre-defined rule.

[0238] Step3: (in some embodiments) the UE receives the notification sent by the base station. For example, the base station indicates the serving RIS or the serving RIS beam, or the base station indicates to switch the serving RIS or the serving RIS beam, which corresponds to the first notification sent by the base station described above; the first notification is used to indicate the serving RIS device or the serving RIS beam, or to indicate to replace the serving RIS device or the serving RIS beam (subsequent operations can be performed according to the first notification; for example, using the notified RIS or beam to perform data transmission with the base station, and using the notified RIS as the serving RIS or using the notified RIS beam as the serving beam for subsequent measurement in the subsequent measurement process);

[0239] For another example, in the case of further measurement of the candidate RIS or beam, the base station sends a notification to the UE and the UE performs related measurement to assist the base station to determine the final serving RIS or serving beam (i.e. the serving RIS beam); the second notification sent by the base station described above is used to indicate the candidate serving RIS device or the candidate serving RIS beam; according to the second notification, at least two RIS measurement signals are measured to obtain measurement information; the at least two RIS measurement signals are the RIS measurement signals corresponding to the candidate serving RIS device or the candidate serving RIS beam.

[0240] Base station side:

[0241] Step0 (in some embodiments): the base station configures the RIS and the UE with the RIS measurement signal transmission mode (such as periodic or aperiodic, etc.), transmission time, etc., and the base station can also configure the UE with the reporting rule of the measurement information (such as reporting time, format, etc.); corresponding to the first base station configuration information and / or the second base station configuration information sent to the terminal, the first base station configuration information is used to indicate the first transmission parameter of the RIS measurement signal, and the second base station configuration information is used to indicate the reporting parameter of the measurement information; wherein the first transmission parameter includes at least one of the receiving time and the transmission mode; the reporting parameter includes at least one of the reporting time and the reporting mode; and / or, the third base station configuration information is sent to the RIS device, and the third base station configuration information is used to indicate the second transmission parameter of the RIS measurement signal; wherein the second transmission parameter includes at least one of the transmission time and the transmission mode.

[0242] Of course, this scheme can also not perform Step0, and the RIS and the UE operate according to the pre-defined rule, which is not limited here.

[0243] Step1: the base station receives the measurement information reported by the UE, and has the following two operations:

[0244] 1) For the case that UE does not determine the serving RIS, the measurement information reported by UE is the measurement information of all RIS measurement signals received by UE, and the serving RIS of UE can be determined according to the information according to the pre-defined rule.

[0245] a) A possible method for selecting a serving RIS: according to the information reported by UE, select one or more RISs with the best channel state as the serving RIS, for example, the RSRP of multiple RISs reported by UE, select one or more with the largest RSRP as the serving RIS; corresponding to the above, in the case that the measurement information includes the channel information corresponding to each of the RIS measurement signals, at least one RIS device is selected as the serving RIS device of the terminal or at least one RIS beam is selected as the serving RIS beam of the terminal according to the channel information; wherein the at least one selected RIS beam belongs to different RIS devices respectively.

[0246] 2) For the case that UE determines the serving RIS, the measurement information reported by UE is the channel information of UE's serving RIS and the interference information of non-serving RIS, and two cases are generated according to the information:

[0247] a) The channel information of the serving RIS meets the signal transmission requirements for serving the target UE, and the phase shift matrix of the non-serving RIS is adjusted according to the interference information of the non-serving RIS to reduce the interference of the non-serving RIS to the target UE. This case a) corresponds to the above, in the case that the measurement information includes the channel information corresponding to the serving RIS device or the serving RIS beam of the terminal and the interference information corresponding to the non-serving RIS device or the non-serving RIS beam, and the channel information meets the transmission requirements of the terminal, a third notification is sent to the RIS device to which the non-serving RIS device or the non-serving RIS beam belongs according to the interference information; the third notification is used to instruct to adjust the beamforming.

[0248] Wherein, whether it meets the signal transmission requirements for serving the target UE can be determined according to the pre-defined rule and the UE requirements, for example, in the Ultra-reliable and Low Latency Communications (URLLC) scenario, the requirement of the UE is high reliability and low latency, then the channel information needs to meet the latency and reliability requirements, for example, the reliability is higher than the pre-defined threshold or the latency is lower than the pre-defined threshold, then it is considered to meet the requirements.

[0249] b) The channel information of the serving RIS does not meet the signal transmission requirements for serving the target UE, and the serving RIS is adjusted or switched in combination with the interference information of the non-serving RIS, and the UE is notified to measure the candidate RIS; which can correspond to at least one of the following:

[0250] In a case where the measurement information includes the channel information corresponding to the serving RIS device of the terminal and the interference information corresponding to the non-serving RIS device, and the channel information does not meet the transmission requirement of the terminal, a serving RIS device is determined according to the channel information and the interference information, and a third notification is sent to the serving RIS device, where the third notification is used to instruct to adjust the beamforming; or a serving RIS device is replaced according to the channel information and the interference information, and a first notification is sent to the terminal, where the first notification is used to instruct to replace the serving RIS device.

[0251] In a case where the measurement information includes the channel information corresponding to the serving RIS beam of the terminal and the interference information corresponding to the non-serving RIS beam, and the channel information does not meet the transmission requirement of the terminal, a serving RIS beam is determined according to the channel information and the interference information, and a third notification is sent to the RIS device to which the serving RIS beam belongs, where the third notification is used to instruct to adjust the beamforming; or a serving RIS beam is replaced according to the channel information and the interference information, and a first notification is sent to the terminal, where the first notification is used to instruct to replace the serving RIS beam.

[0252] In a case where the measurement information includes the channel information corresponding to the candidate serving RIS device or the candidate serving RIS beam of the terminal and the interference information corresponding to the non-candidate serving RIS device or the non-candidate serving RIS beam, at least one RIS device is selected as the serving RIS device of the terminal from the candidate serving RIS device according to the channel information; or at least one RIS beam is selected as the serving RIS beam of the terminal from the candidate serving RIS beam according to the channel information; a first notification is sent to the terminal, and a third notification is sent to other RIS device, where the other RIS device is the RIS device corresponding to the other RIS measurement signal except the first RIS measurement signal in the at least two RIS measurement signals, or the RIS device to which the RIS beam corresponding to the other RIS measurement signal belongs, the first RIS measurement signal is the RIS measurement signal corresponding to the candidate serving RIS device or the candidate serving RIS beam; the first notification is used to instruct the serving RIS device or the serving RIS beam; and the third notification is used to instruct to adjust the beamforming.

[0253] Step 2: the base station sends configuration signaling to inform the UE of the selected service RIS (for operation 1 in Step 1) or the candidate RIS (for operation 2 in Step 1, b); in the case of operation 2, a), the base station can not inform the UE; the former in Step 2 can correspond to the above-mentioned sending of the first notification to the above-mentioned terminal, and the third notification to other RIS devices; wherein the other RIS devices are the RIS devices corresponding to the other RIS measurement signals except the first RIS measurement signal corresponding to the above-mentioned service RIS device or the above-mentioned service RIS beam, or the RIS devices to which the RIS beams corresponding to the other RIS measurement signals belong; the first RIS measurement signal is the RIS measurement signal corresponding to the above-mentioned service RIS device or the above-mentioned service RIS beam; the first notification is used to indicate the above-mentioned service RIS device or service RIS beam; the third notification is used to indicate the adjustment of beamforming. The latter in Step 2 can correspond to the above-mentioned sending of the second notification to the terminal, and the second notification is used to indicate the candidate service RIS device or the candidate service RIS beam.

[0254] The following will be a specific example of the scheme provided by the embodiments of the present disclosure.

[0255] Embodiment 1: process for determining the UE service RIS (i.e. service RIS device);

[0256] As shown in the multi-RIS multi-UE system of FIG. 2, it is assumed that four RISs are deployed in three adjacent cells, and the measurement signals of the four RISs are unique to the RISs in the three cells, as shown in Table 2 below:

[0257] Table 2: Measurement signal and RIS index association table

[0258] RIS 4 in the table can be understood as being at the edge of the three cells, and the base stations of the three cells can all cover the RIS.

[0259] In this example, it is assumed that the UE measures according to the base station configuration, and the specific process in this example can be as follows:

[0260] Step1: The base station configures the RIS and the UE with the RIS measurement signal transmission mode (e.g., periodic transmission), transmission timing or reception timing (e.g., the second slot of each frame), and configures the UE with the reporting rule of the measurement information (e.g., reporting the measurement information in the next slot after receiving the RIS measurement information, and reporting in the form of RIS index plus RSRP). This step can correspond to sending the first base station configuration information and / or the second base station configuration information to the terminal, the first base station configuration information being used to indicate the first transmission parameter of the RIS measurement signal, and the second base station configuration information being used to indicate the reporting parameter of the measurement information; wherein the first transmission parameter includes at least one of the reception timing and the transmission mode; the reporting parameter includes at least one of the reporting timing and the reporting mode; and / or, sending the third base station configuration information to the RIS device, the third base station configuration information being used to indicate the second transmission parameter of the RIS measurement signal; wherein the second transmission parameter includes at least one of the transmission timing and the transmission mode.

[0261] Step2: The RIS receives the configuration information from the base station, and transmits the measurement signal at the given timing (i.e., transmission timing) according to the configuration information. This step can correspond to transmitting the RIS measurement signal corresponding to the RIS device according to the second transmission parameter of the RIS measurement signal indicated by the third base station configuration information.

[0262] Step3: The UE receives the configuration information from the base station, and receives and measures at the RIS measurement signal reception timing according to the configuration information, to obtain the channel information of the RIS. This step can correspond to receiving and measuring at least two RIS measurement signals according to the first transmission parameter of the RIS measurement signal indicated by the first base station configuration information, to obtain the measurement information.

[0263] Suppose the UE receives the measurement signals of two RISs and measures them to obtain the RSRP of the two RISs, as shown in Table 3 below:

[0264] Table 3: UE1 reports the information to the base station

[0265] Step4: The UE reports the measurement information shown in Table 3 above to the base station (which can correspond to sending the measurement information to the base station according to the reporting parameter indicated by the second base station configuration information), and one reporting mode is shown as follows:

[0266] Step5: The base station receives the measurement information reported by the UE, and determines the serving RIS according to the measurement information.

[0267] Here, the base station receives the information reported by multiple UEs. Assuming that the base station receives the measurement information reported by two UEs, the information reported by UE1 is shown in the above table (i.e., the table in Step 4), and the information reported by UE2 is shown in Table 4.

[0268] Table 4 Information reported by UE2 to the base station

[0269] When only one RIS needs to be selected as the serving RIS for the two UEs, the base station selects RIS1 as the serving RIS for UE1 and RIS4 as the serving RIS for UE2 according to the information reported by the two UEs; which corresponds to the above selection of at least one RIS device as the serving RIS device of the terminal.

[0270] When the cooperative RIS needs to be selected according to the reporting situation, the base station comprehensively considers the information reported by the two UEs, for example, sorts the RSRP values in the above two tables. Assuming that RSRP1>RSRP2 and RSRP2<RSRP3<RSRP4, RSRP2 does not meet the signal transmission requirements of UE1, the base station will select RIS1 as the serving RIS for UE1 and RIS2 and RIS4 as the cooperative transmission reception point (TRP) for UE2, and adjust the phase shift matrix of RIS4 (which can correspond to the above third notification indicating adjustment of beamforming) so that its coverage range or coverage direction covers UE2 and avoids radiating to UE1, thereby avoiding interference with UE1.

[0271] Embodiment 2: Process of coordinating RIS to interfere with non-target UE; still assuming that four RISs are deployed in three adjacent cells, and the measurement signals of the four RISs are unique in the three cells, as shown in Table 5:

[0272] Table 5 Association table of measurement signal and RIS index

[0273] In this example, it is assumed that the UE performs measurement according to a predefined rule, the RIS transmits measurement signals according to a predefined rule, and the base station has informed the UE of the selected serving RIS: UE1 knows that its serving RIS is RIS1, and UE2 knows that its serving RIS is RIS2; the specific process of this example can be as follows:

[0274] Step 1: The RIS transmits measurement signals at a predefined time according to a predefined rule. This step can correspond to the second transmission parameter of the RIS measurement signal indicated by the third predefined information, and the RIS measurement signal corresponding to the RIS device is transmitted.

[0275] Step2: UE receives the RIS measurement signal according to the pre-defined rule at the RIS measurement signal receiving occasion, measures the RIS measurement signal to obtain the channel information (at least one of RSRP, AOA, ZOA, RI, CSI, etc.), and measures the non-serving RIS measurement signal to obtain the interference information (at least one of power, power ratio with the serving RIS measurement signal, RSRP, etc.). This step can correspond to the first transmission parameter of the RIS measurement signal indicated according to the first pre-defined information, and the at least two RIS measurement signals are received and measured to obtain the measurement information.

[0276] Step3: UE reports the measurement information to the base station according to the pre-defined rule, including the channel information of the serving RIS (at least one of RSRP, AOA, ZOA, RI, CSI, etc.) and the interference information of the non-serving RIS to the UE (at least one of power, power ratio with the serving RIS measurement signal, RSRP, etc.). This step can correspond to the reporting parameter indicated according to the second pre-defined information, and the above measurement information is sent to the base station.

[0277] Step4: The base station receives the measurement information reported by the UE, and coordinates the interference of the non-serving RIS according to the measurement information; corresponding to the above-mentioned control of RIS beamforming adjustment according to the above-mentioned measurement information. The specific process can be as follows:

[0278] The base station will receive the information reported by multiple UEs. Assuming that the base station receives the reporting information of 2 UEs, as shown in the following Table 6:

[0279] Table 6: UE reporting information list

[0280] When the channel information RSRP1 of RIS1 meets a predefined threshold (such as a UE1 requirement threshold) and the channel information RSRP4 of RIS2 meets a predefined threshold (such as a UE2 requirement threshold), the base station determines that there is no need to adjust (and no need to switch) the service RIS of the two UEs. In some embodiments, in the case that the interference between the two UEs is large, the base station can adjust the beamforming (phase shift matrix) of RIS2 according to the information reported by the two UEs: (1) adjust the beamforming of RIS2 to cover UE2 and avoid radiating to UE1; (2) adjust the beamforming of RIS3 so that it does not radiate to UE1; adjust the beamforming of RIS4 so that it does not radiate to UE2; or when there is no other user to be served, turn off RIS3 and RIS4 (or make RIS3 and RIS4 into absorbing beams or diffuse scattering state, which does not affect the surrounding UEs); accordingly, the adjustment of the related RIS can be obtained. Subsequently, the adjustment can be notified to the RIS (or the controller of the RIS), and in the case that the RIS is deployed on the base station, the RIS can not be additionally notified; in the case that the service RIS is not switched and adjusted, the UE can not be notified.

[0281] When the base station determines that an assisting RIS can be added for UE1 according to the channel information and interference information reported by the UE (for example, RSRP2 is close to the value of RSRP1, or even greater than RSRP1), the beamforming (phase shift matrix) of RIS2 can be adjusted to cover UE1 and UE2 at the same time, and UE1 and UE2 can be simultaneously served; and UE1 can be notified that the candidate RIS is RIS1 and RIS2 (which can correspond to the above-mentioned sending of a second notification to the terminal, the second notification being used to indicate the candidate service RIS device).

[0282] Step 5: When the base station issues a notification, UE1 receives the notification issued by the base station, measures RIS1 and RIS2 to obtain channel information, and measures other RIS (if any) to obtain interference information, and reports the base station; which can correspond to the above-mentioned measuring at least two RIS measurement signals to obtain measurement information according to the above-mentioned second notification; the at least two RIS measurement signals are the RIS measurement signals corresponding to the above-mentioned candidate service RIS device; and the above-mentioned measurement information is sent to the base station.

[0283] Step 6: The base station receives the information reported by UE1; according to the reported information of UE1, it is determined that the channel information of the two RISs meets the predefined requirement, and the service RIS for UE is selected as RIS1 and RIS2; if one of them does not meet the requirement, the RIS that meets the requirement is selected as the service RIS; if neither of them meets the requirement, a candidate RIS is selected from other RIS, and UE1 is notified to measure again (i.e. loop step4~step6).

[0284] Step7: The base station informs UE1 of the index of the RIS serving it; this can correspond to the above-mentioned sending of the first notification to the terminal.

[0285] Embodiment 3: Process for determining the UE serving beam (i.e. the serving RIS beam);

[0286] It is still assumed that 4 RISs are deployed in the 3 adjacent cells, each RIS having 3 beams, and the 4 RISs having a total of 12 beams. The measurement signals of the RISs are uniquely associated with the RIS beams in the 3 cells, as shown in Table 7 below:

[0287] Table 7: RIS beam and measurement signal association table

[0288] RIS 4 in Table 7 can be understood as being at the edge of the three cells, and the base stations of the three cells can all cover the RIS.

[0289] In this example, it is assumed that the UE measures according to the base station configuration, and the specific process of this example can be as follows:

[0290] Step 1: The base station configures the RIS and the UE with the RIS measurement signal sending mode (e.g. periodic sending), sending time or receiving time (e.g. the 2nd slot of each frame), and configures the UE with the reporting rule for the measurement information (e.g. reporting the measurement information in the next slot after receiving the RIS measurement information, and reporting in the form of RIS index plus CSI). This step can correspond to the above-mentioned sending of the first base station configuration information and / or the second base station configuration information to the terminal, the first base station configuration information being used to indicate the first transmission parameter of the RIS measurement signal, and the second base station configuration information being used to indicate the reporting parameter of the above-mentioned measurement information; wherein the first transmission parameter includes at least one of the receiving time and the transmission mode; the reporting parameter includes at least one of the reporting time and the reporting mode; and / or, sending the third base station configuration information to the RIS device, the third base station configuration information being used to indicate the second transmission parameter of the RIS measurement signal; wherein the second transmission parameter includes at least one of the sending time and the transmission mode.

[0291] Step 2: The RIS receives the configuration information from the base station, and sends the measurement signal at the given time (i.e. the sending time) according to the configuration information. This step can correspond to the above-mentioned sending of the RIS measurement signal corresponding to the RIS beam of the RIS device according to the second transmission parameter of the RIS measurement signal indicated by the third base station configuration information.

[0292] Step3: UE receives the configuration information of the base station, receives and measures according to the configuration information at the RIS measurement signal receiving opportunity, and obtains the channel information corresponding to the RIS beam. This step can correspond to the first transmission parameter of the RIS measurement signal indicated according to the first base station configuration information, and the measurement information is obtained by receiving and measuring at least two RIS measurement signals.

[0293] Assuming that the UE receives the measurement signals of the two RIS beams and measures them to obtain the channel information CSI of the two RIS beams, as shown in the following Table 8:

[0294] Table 8: UE1 reports the information of the base station

[0295] Step4: UE reports the measurement information and RIS beam index shown in Table 8 to the base station, and one reporting method is as follows:

[0296] Step5: The base station receives the measurement information reported by the UE, and determines the service RIS beam according to the measurement information.

[0297] Here, the base station will receive the information reported by multiple UEs, assuming that the base station receives the measurement information reported by two UEs, and the information reported by UE1 is shown in the above table (i.e. the table in Step4), and the information reported by UE2 is shown in Table 9 as follows.

[0298] Table 9: UE2 reports the information of the base station

[0299] When only one RIS beam needs to be selected as the service RIS beam for two UEs, the base station selects RIS1 BF1 as the service RIS beam for UE1 and RIS4 BF2 as the service RIS beam for UE2 according to the information reported by the two UEs; corresponding to the selection of at least one RIS beam as the service RIS beam of the terminal.

[0300] When the cooperative RIS needs to be selected according to the reporting situation, the base station will comprehensively consider the information reported by the two UEs, for example, sort the CSIs in the above two tables, assuming that CSI1> CSI2 and CSI2< CSI3< CSI4 (“>” means better), CSI2 does not meet the needs of UE1 signal transmission, then the base station will select RIS1 BF1 as the service RIS beam for UE1 and RIS2 BF3 and RIS4 BF2 as the cooperative beams of UE2, and adjust the phase shift matrix (i.e. beamforming) of RIS4 to make its coverage range or coverage direction cover UE2 to avoid radiation to UE1, causing interference to UE1.

[0301] Embodiment 4: Process of coordinating RIS beam to non-target UE interference

[0302] According to embodiment 3, it is still assumed that 4 RISs are deployed in the 3 adjacent cells, each RIS has 3 beams, and 4 RISs have 12 beams in total. The measurement signals of the RISs are uniquely associated with the RIS beams in the 3 cells, as shown in Table 10:

[0303] Table 10: RIS beam and measurement signal association table

[0304] RIS4 in the table can be understood as being at the edge of the three cells, and the base stations of the three cells can all cover the RIS.

[0305] In this example, it is assumed that the UE measures according to a predefined rule, the RIS transmits the measurement signal according to a predefined rule, and the base station has informed the UE of the selected service RIS beam: UE1 knows that its service RIS beam is RIS1 BF1, and UE2 knows that its service RIS is RIS2 BF2; the specific process of this example can be as follows:

[0306] Step 1: The RIS transmits the measurement signal at the predefined time according to the predefined rule. This step can correspond to the second transmission parameter of the RIS measurement signal indicated according to the third predefined information, and the RIS measurement signal corresponding to the RIS beam of the RIS device is transmitted.

[0307] Step 2: The UE receives the RIS measurement signal for measurement at the RIS measurement signal reception occasion according to the predefined rule, measures the beam measurement signal of the service RIS to obtain channel information (such as at least one of RSRP, AOA, ZOA, RI, CSI, etc.), and measures the beam measurement signal of the non-service RIS to obtain interference information (such as at least one of power, power ratio with the service RIS measurement signal, RSRP, etc.). This step can correspond to the first transmission parameter of the RIS measurement signal indicated according to the first predefined information, and the reception and measurement are performed for at least two RIS measurement signals to obtain the measurement information.

[0308] Step 3: The UE reports the measurement information to the base station according to the predefined rule, including the channel information (such as at least one of RSRP, AOA, ZOA, RI, CSI, etc.) of the service RIS beam and the interference information (such as at least one of power, power ratio with the service RIS measurement signal, RSRP, etc.) of the non-service RIS beam to the UE. This step can correspond to the reporting parameter indicated according to the second predefined information, and the measurement information is transmitted to the base station.

[0309] Step4: The base station receives the measurement information reported by the UE, and coordinates the interference of the RIS beam according to the measurement information; corresponding to the above, the RIS beam is adjusted according to the above measurement information. The specific process can be as follows:

[0310] The base station will receive information reported by multiple UEs. Assuming that the base station receives the reported information of two UEs, as shown in Table 11 below:

[0311] Table 11 UE reporting information list

[0312] When the channel information RSRP1 of RIS1 BF1 meets the predefined threshold (such as the UE1 requirement threshold), and the channel information RSRP4 of RIS2 BF2 meets the predefined threshold (such as the UE2 requirement threshold), the base station determines that there is no need to adjust (and no need to switch) the service RIS beam of the two UEs. In some embodiments, in the case that the interference between the two UEs is large, the base station can adjust the beamforming (phase shift matrix) of RIS2 according to the information reported by the two UEs: (1) adjust the beamforming of RIS2 to cover UE2 and avoid radiating to UE1; (2) adjust the beamforming of RIS3 so that it does not radiate to UE1; adjust the beamforming of RIS4 so that it does not radiate to UE2; or when there is no other user to be served, turn off RIS3 and RIS4 (or make RIS3 and RIS4 into absorbing beams or diffuse scattering state, which does not affect the surrounding UEs); accordingly, the adjustment of the relevant RIS beam can be obtained. Subsequently, the adjustment can be notified to the RIS (or the controller of the RIS), and for the case that the RIS is deployed on the base station or the RIS is connected to the base station through a cable, the RIS can not be additionally notified; in the case of no switching and no adjustment of the service RIS beam, the UE can not be notified.

[0313] When the base station determines that the cooperative RIS beam can be added for UE1 according to the channel information and interference information reported by the UE (for example, RSRP2 is close to the value of RSRP1, or even greater than RSRP1), the beamforming (phase shift matrix) of RIS2 can also be adjusted to cover UE1 and UE2 at the same time (using RIS2 BF2), and UE1 is notified that the candidate RIS beam is RIS1 BF1 and RIS2 BF2 (which can correspond to the second notification sent to the terminal, which is used to indicate the candidate service RIS beam). Wherein, "adjusting the beamforming of RIS2" can include: switching the beam or adjusting the beam (RIS2 BF2), which is not limited here; one case of "switching the beam" is that there is another beam outside RIS2 BF2 that can cover UE1 and UE2 at the same time in the beam reported by the UE, similar to the information related to "RIS2 BF2" in Table 11, which will not be repeated here (not shown in Table 11), and the corresponding other beam outside RIS2 BF2 under RIS2 can be used to provide services for UE1 and UE2 at the same time; and UE1 is notified that the candidate RIS beam is RIS1 BF1 and the other beam.

[0314] Step5: In the case of base station issuing a notification, UE1 receives the notification issued by the base station, measures RIS1 BF1 and RIS2 BF2 to obtain channel information, measures other RIS beams (if any) to obtain interference information, and reports to the base station; which can correspond to the above-mentioned measurement of at least two RIS measurement signals to obtain measurement information according to the second notification; the at least two RIS measurement signals are the RIS measurement signals corresponding to the candidate service RIS beam; and the base station sends the measurement information.

[0315] Step6: The base station receives the information reported by UE1; according to the reporting information of UE1, it is determined that the channel information of the two RIS beams meets the pre-defined requirement, and the service RIS beam for UE is selected as RIS1 BF1 and RIS2 BF2; if one of them does not meet the requirement, the RIS beam that meets the requirement is selected as the service RIS beam; if neither of them meets the requirement, a candidate RIS beam is selected from other RIS beams, and UE1 is notified to measure again (i.e. cycle step4~step6).

[0316] Step7: The base station notifies UE1 the beam index of its service RIS beam; which can correspond to the above-mentioned sending of the first notification to the terminal.

[0317] It is explained that the related contents of the above-mentioned embodiments can be referred to each other, and the repeated parts will not be repeated. In addition, the pre-defined rules related to the RIS side and the pre-defined rules related to the UE side can include at least part of the same content, but are not limited thereto.

[0318] From the above, the present solution involves: RIS sending measurement signals; UE receiving measurements and reporting; base station determining serving RIS or serving beam or cooperating RIS or cooperating beam according to the measurement information reported by UE, and coordinating interference and other processes; accordingly, it can support solving the problem that in a multi-RIS multi-UE system, the signal forwarded by the RIS may be a useful signal for UE1, but will cause interference to UE2 (UE2 refers to other UEs except UE1); specifically, by adding RIS measurement signals and obtaining channel information and interference information by measuring them, the present solution can reasonably adjust the coverage range and direction of the RIS, thereby improving system performance and reducing interference conflicts.

[0319] The present solution can be understood as adjusting the beamforming of at least one beam under the RIS (including adjustment for serving RIS and / or non-serving RIS); in addition, the above candidate RIS can be understood as a candidate serving RIS, and the RIS not notified by the base station can be considered as an interference RIS. Regarding beamforming adjustment, for the case of adjusting the RIS as a whole, it can be adjusting the interference of the RIS as a whole (such as adjusting the coefficient) to the non-target area; for the case of adjusting the beam, it can be switching the beam, or adjusting the beamforming, etc., which are not limited here.

[0320] The present disclosure also provides an information transmission device for a terminal, as shown in FIG. 6, which includes a memory 61, a transceiver 62, and a processor 63:

[0321] The memory 61 is used to store computer programs; the transceiver 62 is used to transceive data under the control of the processor 63; the processor 63 is used to read the computer programs in the memory 61 and perform the following operations:

[0322] Measure at least two intelligent metasurface RIS measurement signals to obtain measurement information; the RIS measurement signal is uniquely associated with one RIS device or one RIS beam in a first area; the measurement information includes: channel information corresponding to each RIS measurement signal, or channel information corresponding to at least one RIS measurement signal and interference information corresponding to at least one RIS measurement signal;

[0323] The transceiver 62 is used to send the measurement information to the base station.

[0324] The information transmission device provided by the embodiment of the present disclosure can measure at least two RIS measurement signals to obtain measurement information, the RIS measurement signal is uniquely associated with an RIS device or an RIS beam in a first area, the measurement information includes channel information corresponding to each RIS measurement signal, or channel information corresponding to at least one RIS measurement signal and interference information corresponding to at least one RIS measurement signal, and the measurement information is sent to a base station, so that the base station can adjust the beamforming of the overall or part of the beam of the RIS based on the measurement information to avoid the interference caused by the coverage of the non-target UE, thereby solving the problem that the RIS causes interference to the non-target UE in the related art.

[0325] Specifically, the transceiver 62 is configured to receive and send data under the control of the processor 63.

[0326] In FIG. 6, the bus architecture can include any number of interconnected buses and bridges, which are specifically linked together by various circuits of one or more processors represented by the processor 63 and the memory represented by the memory 61. The bus architecture can also link various other circuits such as peripheral devices, voltage stabilizers, and power management circuits, which are well known in the art, and thus, further description thereof will not be given herein. The bus interface provides an interface. The transceiver 62 can be a plurality of elements, i.e., including a transmitter and a receiver, which provides a unit for communicating with various other devices on a transmission medium, including a wireless channel, a wired channel, an optical cable, and the like. The user interface 64 can also be an interface capable of connecting the required devices externally and internally, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0327] The processor 63 is responsible for managing the bus architecture and general processing, and the memory 61 can store data used by the processor 600 when performing operations.

[0328] In some embodiments, the processor 63 can be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a complex programmable logic device (CPLD), and the processor can also adopt a multi-core architecture.

[0329] The processor executes any of the methods provided by the embodiments of the present disclosure by invoking computer program stored in the memory. The processor and the memory can also be physically arranged separately.

[0330] The measurement on the at least two RIS measurement signals to obtain the measurement information includes: (1) in a case where the serving RIS device or the serving RIS beam of the terminal is not determined, measuring the at least two RIS measurement signals to obtain channel information corresponding to each of the RIS measurement signals; (2) in a case where the serving RIS device or the serving RIS beam of the terminal is determined, measuring the at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signals corresponding to the serving RIS device or the serving RIS beam, and interference information corresponding to the RIS measurement signals corresponding to a non-serving RIS device or a non-serving RIS beam; and (3) in a case where the candidate serving RIS device or the candidate serving RIS beam of the terminal is determined, measuring the at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signals corresponding to the candidate serving RIS device or the candidate serving RIS beam, and interference information corresponding to the RIS measurement signals corresponding to a non-candidate serving RIS device or a non-candidate serving RIS beam.

[0331] In the embodiments of the present disclosure, the measurement on the at least two RIS measurement signals to obtain the measurement information includes: receiving and measuring the at least two RIS measurement signals according to first transmission parameters of the RIS measurement signals indicated by first base station configuration information or first predefined information, to obtain the measurement information; the first transmission parameters include at least one of a receiving occasion and a transmission manner; and / or the sending of the measurement information to the base station includes: sending the measurement information to the base station according to reporting parameters indicated by second base station configuration information or second predefined information; the reporting parameters include at least one of a reporting occasion and a reporting manner.

[0332] Further, the operations further include: receiving, by the transceiver, a first notification sent by the base station; the first notification is used to indicate the serving RIS device or the serving RIS beam, or is used to indicate to replace the serving RIS device or the serving RIS beam; and performing corresponding operations according to the first notification.

[0333] In the embodiments of the present disclosure, the operations further include: receiving, by the transceiver, a second notification sent by the base station, the second notification being used to indicate a candidate serving RIS device or a candidate serving RIS beam; and the measuring, by the transceiver, the at least two RIS measurement signals to obtain the measurement information includes: measuring, according to the second notification, the at least two RIS measurement signals to obtain the measurement information; and the at least two RIS measurement signals are RIS measurement signals corresponding to the candidate serving RIS device or the candidate serving RIS beam.

[0334] It should be noted that the above device provided by the embodiments of the present disclosure can realize all the method steps realized by the terminal-side method embodiments and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments will not be described in detail.

[0335] The embodiments of the present disclosure also provide an information transmission device, which is a base station, as shown in FIG. 7, including a memory 71, a transceiver 72, and a processor 73.

[0336] The memory 71 is configured to store a computer program; the transceiver 72 is configured to transceive data under the control of the processor 73; and the processor 73 is configured to read the computer program in the memory 71 and perform the following operations:

[0337] receiving, by the transceiver 72, measurement information of at least two RIS measurement signals sent by at least one terminal; the RIS measurement signal is uniquely associated with a RIS device or a RIS beam in a first area; and the measurement information includes: channel information corresponding to each RIS measurement signal, or channel information corresponding to at least one RIS measurement signal and interference information corresponding to at least one RIS measurement signal;

[0338] controlling RIS beamforming adjustment according to the measurement information.

[0339] The information transmission device provided by the embodiments of the present disclosure can realize the adjustment of the RIS beamforming of the base station based on the measurement information of the RIS measurement signal, so as to avoid the interference caused by the coverage of the non-target UE, and well solve the problem that the RIS causes interference to the non-target UE in the related art in the multiple RIS and multiple UE scenario.

[0340] Specifically, the transceiver 72 is configured to receive and transmit data under the control of the processor 73.

[0341] In FIG. 7, the bus architecture can include any number of interconnecting buses and bridges, and various circuitry linking the various components, such as one or more processors represented by the processor 73 and the memory represented by the memory 71. The bus architecture can also link various other circuitry, such as peripheral devices, voltage regulators, and power management circuitry, all of which are well known in the art, and therefore, not further described herein. The bus interface provides an interface. The transceiver 72 can be a plurality of elements, including a transmitter and a receiver, which provides a means for communicating with various other apparatus over a transmission medium, including a wireless channel, a wired channel, optical cable, and the like. The processor 73 is responsible for managing the bus architecture and general processing, and the memory 71 can store data used by the processor 73 in executing operations.

[0342] The processor 73 can be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD), and the processor can also adopt a multi-core architecture.

[0343] According to the measurement information, the control of the RIS beamforming adjustment includes: in the case that the measurement information includes channel information corresponding to each RIS measurement signal, according to the channel information, selecting at least one RIS device as a serving RIS device of the terminal or selecting at least one RIS beam as a serving RIS beam of the terminal; wherein the at least one selected RIS beam belongs to different RIS devices respectively; sending a first notification to the terminal and a third notification to other RIS devices; wherein the other RIS devices are RIS devices corresponding to other RIS measurement signals in the at least two RIS measurement signals except for a first RIS measurement signal, or are RIS devices to which RIS beams corresponding to the other RIS measurement signals belong, the first RIS measurement signal is a RIS measurement signal corresponding to the serving RIS device or the serving RIS beam; the first notification is used to indicate the serving RIS device or the serving RIS beam; and the third notification is used to indicate adjustment of beamforming.

[0344] In the embodiments of the present disclosure, the control of the RIS beamforming adjustment according to the measurement information includes: (1) when the measurement information includes the channel information corresponding to the serving RIS device or the serving RIS beam of the terminal and the interference information corresponding to the non-serving RIS device or the non-serving RIS beam, and the channel information meets the transmission requirement of the terminal, a third notification is sent to the RIS device to which the non-serving RIS device or the non-serving RIS beam belongs according to the interference information, and the third notification is used to instruct to adjust the beamforming; (2) when the measurement information includes the channel information corresponding to the serving RIS device of the terminal and the interference information corresponding to the non-serving RIS device, and the channel information does not meet the transmission requirement of the terminal, a serving RIS device is determined according to the channel information and the interference information, and a third notification is sent to the serving RIS device, and the third notification is used to instruct to adjust the beamforming; or a serving RIS device is determined according to the channel information and the interference information, and a first notification is sent to the terminal, and the first notification is used to instruct to replace the serving RIS device; (3) when the measurement information includes the channel information corresponding to the serving RIS beam of the terminal and the interference information corresponding to the non-serving RIS beam, and the channel information does not meet the transmission requirement of the terminal, a serving RIS beam is determined according to the channel information and the interference information, and a third notification is sent to the RIS device to which the serving RIS beam belongs, and the third notification is used to instruct to adjust the beamforming; or a serving RIS beam is determined according to the channel information and the interference information, and a first notification is sent to the terminal, and the first notification is used to instruct to replace the serving RIS beam; (4) when the measurement information includes the channel information corresponding to the candidate serving RIS device or the candidate serving RIS beam of the terminal and the interference information corresponding to the non-candidate serving RIS device or the non-candidate serving RIS beam, at least one RIS device is selected as the serving RIS device of the terminal from the candidate serving RIS device according to the channel information, or at least one RIS beam is selected as the serving RIS beam of the terminal from the candidate serving RIS beam according to the channel information, a first notification is sent to the terminal, and a third notification is sent to other RIS devices; wherein the other RIS devices are the RIS devices corresponding to the other RIS measurement signals except the first RIS measurement signal in the at least two RIS measurement signals, or the RIS devices to which the RIS beams corresponding to the other RIS measurement signals belong, the first RIS measurement signal is the RIS measurement signal corresponding to the candidate serving RIS device or the candidate serving RIS beam; the first notification is used to instruct the serving RIS device or the serving RIS beam; and the third notification is used to instruct to adjust the beamforming.

[0345] In the case where the first notification is used to indicate a replacement of a serving RIS device or a serving RIS beam, the controlling, according to the measurement information, the RIS beamforming adjustment further includes: sending, by the transceiver, a second notification to the terminal, the second notification being used to indicate a candidate serving RIS device or a candidate serving RIS beam.

[0346] Further, the operations further include: sending, by the transceiver, first base station configuration information and / or second base station configuration information to the terminal, the first base station configuration information being used to indicate first transmission parameters of the RIS measurement signal, and the second base station configuration information being used to indicate reporting parameters of the measurement information; wherein the first transmission parameters include at least one of a receiving occasion and a transmission manner; the reporting parameters include at least one of a reporting occasion and a reporting manner; and / or sending, by the transceiver, third base station configuration information to the RIS device, the third base station configuration information being used to indicate second transmission parameters of the RIS measurement signal; wherein the second transmission parameters include at least one of a sending occasion and a transmission manner.

[0347] It should be noted that the above apparatus provided by the embodiments of the present disclosure can realize all the method steps realized by the base station side method embodiments and achieve the same technical effects, and the same parts and beneficial effects of the method embodiments in this embodiment will not be described in detail.

[0348] The embodiments of the present disclosure also provide an information transmission device, which is a RIS device, as shown in FIG. 8, including a memory 81, a transceiver 82, and a processor 83:

[0349] The memory 81 is configured to store a computer program; the transceiver 82 is configured to transceive data under the control of the processor 83; and the processor 83 is configured to read the computer program in the memory 81 and perform the following operations:

[0350] The transceiver 82 is configured to send an RIS measurement signal corresponding to the RIS device or an RIS beam of the RIS device; and the RIS measurement signal is uniquely associated with the RIS device or the RIS beam in a first area.

[0351] The information transmission device provided in the embodiment of the present disclosure can support the terminal to measure the RIS measurement signal and obtain the measurement information to be sent to the base station, and further support the base station to adjust the overall or part of the beam of the RIS based on the measurement information of the RIS measurement signal, so as to avoid the interference caused by the coverage of the non-target UE, and well solve the problem that the RIS causes the interference to the non-target UE in the related art in the multiple RIS and multiple UE scenario.

[0352] Specifically, the transceiver 82 is configured to receive and send data under the control of the processor 83.

[0353] In FIG. 8, the bus architecture can include any number of interconnecting buses and bridges, and various circuitry that links the various circuits together, such as one or more processors represented by the processor 83 and memory represented by the memory 81. The bus architecture can also link various other circuits such as peripheral devices, voltage stabilizers, and power management circuits, which are well known in the art, and thus, not further described herein. The bus interface provides an interface. The transceiver 82 can be multiple elements, i.e., including a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium, including a wireless channel, a wired channel, an optical cable, and the like. The processor 83 is responsible for managing the bus architecture and general processing, and the memory 81 can store data used by the processor 83 in performing operations.

[0354] The processor 83 can be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor can also adopt a multi-core architecture.

[0355] Further, the above operation further includes: receiving, by the transceiver, a third notification sent by the base station; the third notification is used to indicate to adjust the beamforming; and adjusting the shaping parameter corresponding to the RIS device or the shaping parameter corresponding to the RIS beam of the RIS device according to the third notification.

[0356] In the embodiment of the present disclosure, the above operation further includes: forwarding, by the transceiver, information sent by at least one base station according to the adjusted shaping parameter.

[0357] The sending, by the RIS device or the RIS beam of the RIS device, of the RIS measurement signal includes: sending, according to a second transmission parameter of the RIS measurement signal indicated by third base station configuration information or third predefined information, the RIS measurement signal corresponding to the RIS device or the RIS beam of the RIS device; the second transmission parameter includes at least one of a transmission time and a transmission mode.

[0358] It should be noted that the above device provided by the embodiments of the present disclosure can realize all the method steps realized by the above RIS device side method embodiments and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments will not be described in detail herein.

[0359] The embodiments of the present disclosure also provide an information transmission device applied to a terminal, as shown in FIG. 9, which includes:

[0360] The first measurement unit 91 is configured to measure at least two intelligent metasurface RIS measurement signals to obtain measurement information; the RIS measurement signal is uniquely associated with one RIS device or one RIS beam in a first area; the measurement information includes channel information corresponding to each RIS measurement signal, or channel information corresponding to at least one RIS measurement signal and interference information corresponding to at least one RIS measurement signal;

[0361] The first sending unit 92 is configured to send the measurement information to a base station.

[0362] The information transmission device provided by the embodiments of the present disclosure can support the base station to adjust the beamforming of the overall or partial beam of the RIS based on the measurement information, so as to avoid the interference caused by the coverage of the non-target UE, and well solve the problem that the RIS will cause interference to the non-target UE in the related art under the multiple RIS and multiple UE scenario.

[0363] The measurement on the at least two RIS measurement signals to obtain the measurement information includes: (1) in a case where a serving RIS device or a serving RIS beam of the terminal is not determined, measurement on the at least two RIS measurement signals to obtain channel information corresponding to each of the RIS measurement signals; (2) in a case where the serving RIS device or the serving RIS beam of the terminal is determined, measurement on the at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signals corresponding to the serving RIS device or the serving RIS beam and interference information corresponding to the RIS measurement signals corresponding to a non-serving RIS device or a non-serving RIS beam; and (3) in a case where a candidate serving RIS device or a candidate serving RIS beam of the terminal is determined, measurement on the at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signals corresponding to the candidate serving RIS device or the candidate serving RIS beam and interference information corresponding to the RIS measurement signals corresponding to a non-candidate serving RIS device or a non-candidate serving RIS beam.

[0364] In the embodiments of the present disclosure, the measurement on the at least two RIS measurement signals to obtain the measurement information includes: receiving and measuring the at least two RIS measurement signals according to first transmission parameters of the RIS measurement signals indicated by first base station configuration information or first predefined information to obtain the measurement information, wherein the first transmission parameters include at least one of a receiving occasion and a transmission mode; and / or the sending of the measurement information to the base station includes: sending the measurement information to the base station according to reporting parameters indicated by second base station configuration information or second predefined information, wherein the reporting parameters include at least one of a reporting occasion and a reporting mode.

[0365] Further, the information transmission apparatus also includes: a first receiving unit configured to receive a first notification sent by the base station, wherein the first notification is used to indicate a serving RIS device or a serving RIS beam or to indicate a change of the serving RIS device or the serving RIS beam; and a first processing unit configured to perform a corresponding operation according to the first notification.

[0366] In the embodiments of the present disclosure, the information transmission apparatus also includes: a second receiving unit configured to receive a second notification sent by the base station, wherein the second notification is used to indicate a candidate serving RIS device or a candidate serving RIS beam; and the measurement on the at least two RIS measurement signals to obtain the measurement information includes: measurement on the at least two RIS measurement signals according to the second notification to obtain the measurement information, wherein the at least two RIS measurement signals are RIS measurement signals corresponding to the candidate serving RIS device or the candidate serving RIS beam.

[0367] It should be noted that the above device provided by the embodiments of the present disclosure can realize all the method steps achieved by the terminal-side method embodiments and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments will not be described in detail.

[0368] The embodiments of the present disclosure also provide an information transmission device applied to a base station, as shown in FIG. 10, which comprises:

[0369] The third receiving unit 101 is configured to receive measurement information of at least two RIS measurement signals sent by at least one terminal; the RIS measurement signal is uniquely associated with one RIS device or one RIS beam in a first area; and the measurement information comprises channel information corresponding to each RIS measurement signal, or channel information corresponding to at least one RIS measurement signal and interference information corresponding to at least one RIS measurement signal.

[0370] The first control unit 102 is configured to control RIS beamforming adjustment according to the measurement information.

[0371] The information transmission device provided by the embodiments of the present disclosure can realize the adjustment of the overall or partial beamforming of the RIS by the base station based on the measurement information of the RIS measurement signal, so as to avoid the interference caused by the coverage of the non-target UE, and well solve the problem that the RIS will cause interference to the non-target UE in the related art under the multiple RIS and multiple UE scenario.

[0372] The method comprises: receiving, by a terminal, at least two RIS measurement signals from at least two RIS devices; determining, by the terminal, measurement information of the at least two RIS measurement signals; and sending, by the terminal, the measurement information to a network device; wherein the network device is configured to control RIS beamforming adjustment according to the measurement information; and wherein the network device is configured to: in a case where the measurement information comprises channel information corresponding to each of the at least two RIS measurement signals, select at least one RIS device as a serving RIS device of the terminal or select at least one RIS beam as a serving RIS beam of the terminal according to the channel information; wherein the at least one RIS beam belongs to different RIS devices respectively; send a first notification to the terminal, and send a third notification to other RIS devices; wherein the other RIS devices are RIS devices corresponding to RIS measurement signals other than a first RIS measurement signal in the at least two RIS measurement signals, or are RIS devices to which RIS beams corresponding to the other RIS measurement signals belong, the first RIS measurement signal being a RIS measurement signal corresponding to the serving RIS device or the serving RIS beam; the first notification being used to indicate the serving RIS device or the serving RIS beam; and the third notification being used to indicate adjustment of beamforming.

[0373] In the embodiments of the present disclosure, the control of the RIS beamforming adjustment according to the measurement information includes: (1) when the measurement information includes the channel information corresponding to the serving RIS device or the serving RIS beam of the terminal and the interference information corresponding to the non-serving RIS device or the non-serving RIS beam, and the channel information meets the transmission requirement of the terminal, a third notification is sent to the RIS device to which the non-serving RIS device or the non-serving RIS beam belongs according to the interference information, and the third notification is used to instruct to adjust the beamforming; (2) when the measurement information includes the channel information corresponding to the serving RIS device of the terminal and the interference information corresponding to the non-serving RIS device, and the channel information does not meet the transmission requirement of the terminal, a serving RIS device is determined according to the channel information and the interference information, and a third notification is sent to the serving RIS device, and the third notification is used to instruct to adjust the beamforming, or a serving RIS device is determined to be replaced according to the channel information and the interference information, and a first notification is sent to the terminal, and the first notification is used to instruct to replace the serving RIS device; (3) when the measurement information includes the channel information corresponding to the serving RIS beam of the terminal and the interference information corresponding to the non-serving RIS beam, and the channel information does not meet the transmission requirement of the terminal, a serving RIS beam is determined according to the channel information and the interference information, and a third notification is sent to the RIS device to which the serving RIS beam belongs, and the third notification is used to instruct to adjust the beamforming, or a serving RIS beam is determined to be replaced according to the channel information and the interference information, and a first notification is sent to the terminal, and the first notification is used to instruct to replace the serving RIS beam; (4) when the measurement information includes the channel information corresponding to the candidate serving RIS device or the candidate serving RIS beam of the terminal and the interference information corresponding to the non-candidate serving RIS device or the non-candidate serving RIS beam, at least one RIS device is selected as the serving RIS device of the terminal from the candidate serving RIS device according to the channel information, or at least one RIS beam is selected as the serving RIS beam of the terminal from the candidate serving RIS beam according to the channel information, a first notification is sent to the terminal, and a third notification is sent to other RIS devices, wherein the other RIS devices are the RIS devices corresponding to the other RIS measurement signals except the first RIS measurement signal in the at least two RIS measurement signals, or the RIS devices to which the RIS beams corresponding to the other RIS measurement signals belong, the first RIS measurement signal is the RIS measurement signal corresponding to the candidate serving RIS device or the candidate serving RIS beam, the first notification is used to instruct the serving RIS device or the serving RIS beam, and the third notification is used to instruct to adjust the beamforming.

[0374] In a case where the first notification is used to indicate a replacement of a serving RIS device or a serving RIS beam, the controlling, according to the measurement information, of the RIS beamforming adjustment further includes: sending, to the terminal, a second notification used to indicate a candidate serving RIS device or a candidate serving RIS beam.

[0375] Further, the information transmission apparatus further includes: a second sending unit configured to send, to the terminal, first base station configuration information used to indicate first transmission parameters of the RIS measurement signal and / or second base station configuration information used to indicate reporting parameters of the measurement information, wherein the first transmission parameters include at least one of a receiving occasion and a transmission manner, and the reporting parameters include at least one of a reporting occasion and a reporting manner; and / or a third sending unit configured to send, to the RIS device, third base station configuration information used to indicate second transmission parameters of the RIS measurement signal, wherein the second transmission parameters include at least one of a sending occasion and a transmission manner.

[0376] It should be noted that the apparatus provided in the embodiments of the present disclosure can implement all the method steps implemented by the base station side method embodiments and achieve the same technical effects, and thus the same parts and beneficial effects of the method embodiments will not be described in detail herein.

[0377] The embodiments of the present disclosure further provide an information transmission apparatus applied to an RIS device, as shown in FIG. 11, which includes:

[0378] A third sending unit 111 is configured to send an RIS measurement signal corresponding to the RIS device or an RIS beam of the RIS device, wherein the RIS measurement signal is uniquely associated with the RIS device or one RIS beam in a first area.

[0379] The information transmission apparatus provided by the embodiments of the present disclosure can support the terminal to measure the RIS measurement signal and obtain the measurement information to send to the base station, and further support the base station to adjust the beamforming of the overall or partial beam of the RIS based on the measurement information of the RIS measurement signal, so as to avoid the interference caused by the coverage of the non-target UE, and thus well solve the problem that the RIS causes interference to the non-target UE in the related art in the multiple RIS and multiple UE scenario.

[0380] Further, the information transmission device described above further includes: a fourth receiving unit configured to receive a third notification sent by the base station, the third notification being configured to indicate adjustment of the beamforming; and a first adjusting unit configured to adjust the beamforming parameter corresponding to the RIS device or the beamforming parameter corresponding to the RIS beam of the RIS device according to the third notification.

[0381] In the embodiments of the present disclosure, the information transmission device described above further includes: a fourth sending unit configured to forward information sent by at least one base station according to the adjusted beamforming parameter.

[0382] The sending of the RIS measurement signal corresponding to the RIS device or the RIS beam of the RIS device includes: sending the RIS measurement signal corresponding to the RIS device or the RIS beam of the RIS device according to the second transmission parameter of the RIS measurement signal indicated by the third base station configuration information or the third predefined information, wherein the second transmission parameter includes at least one of a transmission time and a transmission mode.

[0383] It should be noted that the device described above provided by the embodiments of the present disclosure can realize all the method steps realized by the RIS device side method embodiments and achieve the same technical effects, and the same parts and beneficial effects of the method embodiments in this embodiment will not be described in detail.

[0384] It should be noted that the division of units in the embodiments of the present disclosure is illustrative, and is only a logical function division. When actually implemented, another division mode can be used. In addition, each functional unit in each embodiment of the present disclosure can be integrated in one processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0385] The integrated unit, if implemented in the form of a software functional unit and sold or used as an independent product, can be stored in a processor-readable storage medium. Based on this understanding, the technical solutions of the present disclosure, essentially or in other words, the part that contributes to the related art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor execute all or part of the steps of the methods described in the various embodiments of the present disclosure. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various other media that can store program codes.

[0386] The present disclosure also provides a non-transitory readable storage medium storing a program for causing a processor to execute the information transmission method at the terminal side, the base station side, or the RIS device side.

[0387] The non-transitory readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to a magnetic storage (such as a floppy disk, a hard disk, a magnetic tape, a magneto optical disk (MO), etc.), an optical storage (such as a compact disc (CD), a digital video disc (DVD), a Blu-ray disc (BD), a high-definition versatile disc (HVD), etc.), and a semiconductor memory (such as a ROM, an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a non-volatile memory (NAND FLASH), a solid state disk (SSD)), etc.

[0388] Among them, the implementation embodiments of the information transmission method at the terminal side, the base station side, or the RIS device side are all applicable to the embodiments of the non-transitory readable storage medium, and can also achieve the same technical effects.

[0389] Those skilled in the art will appreciate that embodiments of the disclosure can be readily used as a method, a system or a computer program product. Accordingly, the disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the disclosure can take the form of a computer program product on one or more computer readable storage media (including, but not limited to, magnetic disks or optical storage) embodying computer readable program code.

[0390] The disclosure is described in reference to the flowchart and / or block diagrams of the method, apparatus (system) and computer program product according to embodiments of the disclosure. It should be understood that each flow and / or block in the flowchart and / or block diagrams, and a combination of flows and / or blocks in the flowchart and / or block diagrams, can be implemented by computer executable instructions. The computer executable instructions can be provided to a processor of a general purpose computer, a special purpose computer, an embedded processor or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart and / or block diagram flow or flows and / or block or blocks.

[0391] These processor executable instructions can also be stored in a processor readable memory that can direct the computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor readable memory produce an article of manufacture including instruction means that implement the function specified in the flowchart flow or flows and / or block diagram block or blocks.

[0392] These processor executable instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions executed on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and / or block diagram block or blocks.

[0393] Moreover, it should be noted that in the apparatus and method of the present disclosure, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions of the present disclosure. Moreover, the steps of performing the above series of processes can naturally be executed in time sequence according to the order of description, but do not necessarily have to be executed in time sequence, and some steps can be executed in parallel or independently of each other. It can be understood by those skilled in the art that all or any steps or components of the method and apparatus of the present disclosure can be implemented in hardware, firmware, software, or a combination thereof, in any computing device (including processors, storage media, etc.) or network of computing devices, using the basic programming skills of those skilled in the art upon reading the description of the present disclosure.

[0394] It should be noted that it should be understood that the division of each module above is only a logical division of functions, and in actual implementation, all or part of them can be integrated into one physical entity, or can be physically separated. Moreover, these modules can all be implemented in the form of being called by a processing element through software; all can be implemented in the form of hardware; or some modules can be implemented in the form of being called by a processing element through software, and some modules can be implemented in the form of hardware. For example, a certain module can be a separately established processing element, or can be integrated in a certain chip of the above apparatus, in addition, it can also be stored in the form of program code in the memory of the above apparatus, and called and executed by a certain processing element of the above apparatus to determine the function of the above module. The implementation of other modules is similar. Moreover, all or part of these modules can be integrated together, or can be independently implemented. The processing element described herein can be an integrated circuit having a signal processing capability. In the implementation process, each step of the above method or each of the above modules can be completed by the integrated logic circuit of hardware or the instruction of software in the processing element.

[0395] For example, each module, unit, subunit, or submodule can be one or more integrated circuits configured to implement the above methods, such as one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs). As another example, when a module is implemented using processing element scheduler code, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor capable of calling program code. Furthermore, these modules can be integrated together to implement a system-on-a-chip (SOC).

[0396] The terms “first,” “second,” etc., used in this disclosure and in the claims are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this disclosure described herein may be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. Additionally, the use of “and / or” in the specification and claims indicates at least one of the connected objects, such as A and / or B and / or C, indicating seven possibilities: A alone, B alone, C alone, and both A and B, both B and C, both A and C, and A, B, and C. Similarly, the use of “at least one of A and B” in this specification and claims should be understood as “A alone, B alone, or both A and B.”

[0397] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.

Claims

1. An information transmission method applied to a terminal, the method comprising: measuring at least two Reconfigurable Intelligent Surface (RIS) measurement signals to obtain measurement information; the RIS measurement signals being associated with RIS devices or RIS beams in a first area; the measurement information comprising channel information corresponding to the RIS measurement signals, or channel information corresponding to at least one of the RIS measurement signals and interference information corresponding to at least one of the RIS measurement signals; and transmitting the measurement information to a base station. The measurement of the at least two RIS measurement signals to obtain the measurement information comprises: in a case where a serving RIS device or a serving RIS beam of the terminal is not determined, measuring at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signals; in a case where the serving RIS device or the serving RIS beam of the terminal is determined, measuring at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signals corresponding to the serving RIS device or the serving RIS beam and interference information corresponding to the RIS measurement signals corresponding to non-serving RIS devices or non-serving RIS beams; and in a case where a candidate serving RIS device or a candidate serving RIS beam of the terminal is determined, measuring at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signals corresponding to the candidate serving RIS device or the candidate serving RIS beam and interference information corresponding to the RIS measurement signals corresponding to non-candidate serving RIS devices or non-candidate serving RIS beams. The measurement of the at least two RIS measurement signals to obtain the measurement information comprises: receiving and measuring at least two RIS measurement signals according to first transmission parameters of the RIS measurement signals indicated by first base station configuration information or first predefined information to obtain the measurement information; wherein the first transmission parameters comprise at least one of a receiving occasion and a transmission manner. The transmitting of the measurement information to the base station comprises: transmitting the measurement information to the base station according to reporting parameters indicated by second base station configuration information or second predefined information; wherein the reporting parameters comprise at least one of a reporting occasion and a reporting manner.

4. The information transmission method of claim 1, further comprising: receiving a first notification sent by the base station; the first notification being used to indicate a serving RIS device or a serving RIS beam, or to indicate a change of the serving RIS device or the serving RIS beam.

2. The information transmission method according to claim 1, wherein 5. The information transmission method of claim 1 or 2, further comprising: receiving a second notification sent by the base station, the second notification being used to indicate a candidate serving RIS device or a candidate serving RIS beam. The measurement of the at least two RIS measurement signals to obtain the measurement information comprises: measuring at least two RIS measurement signals according to the second notification to obtain the measurement information. ​ ​ 3. The information transmission method according to claim 1, wherein ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The at least two RIS measurement signals are RIS measurement signals corresponding to the candidate serving RIS device or the candidate serving RIS beam.

6. An information transmission method applied to a base station, the method comprising: receiving measurement information of at least two RIS measurement signals sent by at least one terminal; The RIS measurement signals are associated with RIS devices or RIS beams in a first area; The measurement information includes channel information corresponding to the RIS measurement signals, or channel information corresponding to at least one RIS measurement signal and interference information corresponding to at least one RIS measurement signal; According to the measurement information, control RIS beamforming adjustment.

7. The information transmission method according to claim 6, wherein The RIS beamforming adjustment controlled according to the measurement information includes: In the case where the measurement information includes channel information corresponding to the RIS measurement signals, at least one RIS device is selected as a serving RIS device of the terminal or at least one RIS beam is selected as a serving RIS beam of the terminal according to the channel information; wherein the at least one selected RIS beam belongs to different RIS devices respectively; Send a first notification to the terminal and a third notification to other RIS devices; wherein the other RIS devices are RIS devices corresponding to RIS measurement signals other than a first RIS measurement signal in the at least two RIS measurement signals, or RIS devices to which RIS beams corresponding to the other RIS measurement signals belong, and the first RIS measurement signal is a RIS measurement signal corresponding to the serving RIS device or the serving RIS beam; The first notification is used to indicate the serving RIS device or the serving RIS beam; The third notification is used to indicate adjusting beamforming.

8. The information transmission method according to claim 6, wherein The RIS beamforming adjustment controlled according to the measurement information includes: In the case where the measurement information includes channel information corresponding to the RIS measurement signals, at least one RIS device is selected as a serving RIS device of the terminal or at least one RIS beam is selected as a serving RIS beam of the terminal according to the channel information; wherein the at least one selected RIS beam belongs to different RIS devices respectively; Send a first notification to the terminal and a third notification to other RIS devices; wherein the other RIS devices are RIS devices corresponding to RIS measurement signals other than a first RIS measurement signal in the at least two RIS measurement signals, or RIS devices to which RIS beams corresponding to the other RIS measurement signals belong, and the first RIS measurement signal is a RIS measurement signal corresponding to the serving RIS device or the serving RIS beam; The first notification is used to indicate the serving RIS device or the serving RIS beam; The third notification is used to indicate adjusting beamforming. The RIS beamforming adjustment controlled according to the measurement information includes: In the case where the measurement information includes channel information corresponding to the RIS measurement signals, at least one RIS device is selected as a serving RIS device of the terminal or at least one RIS beam is selected as a serving RIS beam of the terminal according to the channel information; wherein the at least one selected RIS beam belongs to different RIS devices respectively; Send a first notification to the terminal and a third notification to other RIS devices; wherein the other RIS devices are RIS devices corresponding to RIS measurement signals other than a first RIS measurement signal in the at least two RIS measurement signals, or RIS devices to which RIS beams corresponding to the other RIS measurement signals belong, and the first RIS measurement signal is a RIS measurement signal corresponding to the serving RIS device or the serving RIS beam; The first notification is used to indicate the serving RIS device or the serving RIS beam; The third notification is used to indicate adjusting beamforming. In a case where the measurement information includes the channel information corresponding to a serving RIS beam of the terminal and the interference information corresponding to a non-serving RIS beam, and the channel information does not meet the transmission requirement of the terminal, determining, according to the channel information and the interference information, to adjust the serving RIS beam, and sending a third notification to an RIS device to which the serving RIS beam belongs, the third notification being used to instruct to adjust beamforming; or determining, according to the channel information and the interference information, to replace the serving RIS beam, and sending a first notification to the terminal, the first notification being used to instruct to replace the serving RIS beam; In a case where the measurement information includes the channel information corresponding to a candidate serving RIS device or a candidate serving RIS beam of the terminal and the interference information corresponding to a non-candidate serving RIS device or a non-candidate serving RIS beam, selecting, according to the channel information, at least one RIS device from the candidate serving RIS device as a serving RIS device of the terminal; or selecting, according to the channel information, at least one RIS beam from the candidate serving RIS beam as a serving RIS beam of the terminal; sending a first notification to the terminal and a third notification to other RIS devices, wherein the other RIS devices are RIS devices corresponding to other RIS measurement signals except a first RIS measurement signal in the at least two RIS measurement signals, or RIS devices to which RIS beams corresponding to the other RIS measurement signals belong, the first RIS measurement signal being a RIS measurement signal corresponding to the candidate serving RIS device or the candidate serving RIS beam; the first notification being used to instruct the serving RIS device or the serving RIS beam; and the third notification being used to instruct to adjust beamforming.

9. The information transmission method according to claim 8, wherein In a case where the first notification is used to instruct to replace the serving RIS device or the serving RIS beam, the controlling, according to the measurement information, of RIS beamforming adjustment further includes: sending a second notification to the terminal, the second notification being used to instruct the candidate serving RIS device or the candidate serving RIS beam.

10. The information transmission method according to claim 6, further comprising: sending first base station configuration information and / or second base station configuration information to the terminal, the first base station configuration information being used to instruct first transmission parameters of the RIS measurement signal, and the second base station configuration information being used to instruct reporting parameters of the measurement information; wherein the first transmission parameters include at least one of a receiving occasion and a transmission mode; and the reporting parameters include at least one of a reporting occasion and a reporting mode; and / or sending third base station configuration information to the RIS device, the third base station configuration information being used to instruct second transmission parameters of the RIS measurement signal; wherein the second transmission parameters include at least one of a sending occasion and a transmission mode.

11. An information transmission method, applied to an RIS device, the method comprising: sending an RIS measurement signal corresponding to the RIS device or an RIS beam of the RIS device; The RIS measurement signal is associated with the RIS device or the RIS beam in a first region.

12. The information transmission method of claim 11, further comprising: receiving a third notification sent by a base station; the third notification is used to indicate adjusting beamforming; according to the third notification, adjusting the corresponding beamforming parameter of the RIS device or the corresponding beamforming parameter of the RIS beam of the RIS device.

13. The information transmission method of claim 12, the method comprising: forwarding information sent by at least one base station according to the adjusted beamforming parameter.

14. The information transmission method according to claim 11, wherein The sending of the RIS measurement signal corresponding to the RIS device or the RIS beam of the RIS device comprises: sending the RIS measurement signal corresponding to the RIS device or the RIS beam of the RIS device according to the second transmission parameter of the RIS measurement signal indicated by the third base station configuration information or the third predefined information; wherein the second transmission parameter comprises at least one of the transmission occasion and the transmission mode.

15. An information transmission device, the information transmission device being a terminal, the device comprising a memory, a transceiver, and a processor: a memory for storing a computer program; a transceiver for transceiving data under control of the processor; the processor is configured to read a computer program in the memory and perform the following operations: measuring at least two intelligent metasurface (RIS) measurement signals to obtain measurement information; the RIS measurement signal is associated with the RIS device or the RIS beam in a first region; the measurement information comprises channel information corresponding to the RIS measurement signal, or channel information corresponding to at least one RIS measurement signal and interference information corresponding to at least one RIS measurement signal; sending the measurement information to a base station through the transceiver.

16. The information transmitting apparatus according to claim 15, wherein The measurement of at least two intelligent metasurface (RIS) measurement signals to obtain measurement information comprises: in the case where the serving RIS device or the serving RIS beam of the terminal is not determined, measuring at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signal; in the case where the serving RIS device or the serving RIS beam of the terminal is determined, measuring at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signal corresponding to the serving RIS device or the serving RIS beam, and interference information corresponding to the RIS measurement signal corresponding to the non-serving RIS device or the non-serving RIS beam; in the case where the candidate serving RIS device or the candidate serving RIS beam of the terminal is determined, measuring at least two RIS measurement signals to obtain channel information corresponding to the RIS measurement signal corresponding to the candidate serving RIS device or the candidate serving RIS beam, and interference information corresponding to the RIS measurement signal corresponding to the non-candidate serving RIS device or the non-candidate serving RIS beam.

17. The information transmitting apparatus according to claim 15, wherein The measurement of at least two intelligent metasurface (RIS) measurement signals to obtain measurement information comprises: According to the first base station configuration information or the first predefined information, the first transmission parameter of the RIS measurement signal is indicated, and measurement is performed on at least two RIS measurement signals to obtain measurement information; wherein the first transmission parameter includes at least one of a receiving occasion and a transmission mode; And / or, the sending the measurement information to the base station includes: According to the second base station configuration information or the second predefined information, the reporting parameter is indicated, and the measurement information is sent to the base station; wherein the reporting parameter includes at least one of a reporting occasion and a reporting mode.

18. The information transmitting apparatus according to claim 15, wherein The operation further includes: Receiving, by the transceiver, a first notification sent by the base station; the first notification is used to indicate a service RIS device or a service RIS beam, or to indicate a replacement service RIS device or a replacement service RIS beam.

19. The information transmitting apparatus according to claim 15 or 16, wherein The operation further includes: Receiving, by the transceiver, a second notification sent by the base station, the second notification is used to indicate a candidate service RIS device or a candidate service RIS beam; The measurement on the at least two intelligent metasurface RIS measurement signals to obtain the measurement information includes: According to the second notification, measurement is performed on at least two RIS measurement signals to obtain measurement information; the at least two RIS measurement signals are RIS measurement signals corresponding to the candidate service RIS device or the candidate service RIS beam.

20. An information transmission device, the information transmission device being a base station, the device comprising a memory, a transceiver, and a processor: The memory is used to store a computer program; the transceiver is used to transceive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: receive, by the transceiver, measurement information for the at least two RIS measurement signals transmitted by the at least one terminal; The RIS measurement signal is associated with an RIS device or an RIS beam in a first area; The measurement information includes channel information corresponding to the RIS measurement signal, or channel information corresponding to at least one RIS measurement signal and interference information corresponding to at least one RIS measurement signal; According to the measurement information, the RIS beamforming adjustment is controlled.

21. The information transmitting apparatus according to claim 20, wherein The RIS beamforming adjustment controlled according to the measurement information includes: In the case that the measurement information includes the channel information corresponding to the RIS measurement signal, at least one RIS device is selected as a service RIS device of a terminal or at least one RIS beam is selected as a service RIS beam of a terminal according to the channel information; wherein the at least one selected RIS beam respectively belongs to different RIS devices; A first notification is sent to the terminal, and a third notification is sent to other RIS devices; wherein the other RIS devices are RIS devices corresponding to other RIS measurement signals in the at least two RIS measurement signals except for a first RIS measurement signal, or RIS devices to which RIS beams corresponding to the other RIS measurement signals belong, and the first RIS measurement signal is a RIS measurement signal corresponding to the service RIS device or the service RIS beam; The first notification is used to indicate the service RIS device or the service RIS beam; The third notification is used to indicate adjustment of beamforming.

22. The information transmitting apparatus according to claim 20, wherein The control of the RIS beamforming adjustment according to the measurement information comprises: In a case where the measurement information comprises the channel information corresponding to a serving RIS device or a serving RIS beam of the terminal and the interference information corresponding to a non-serving RIS device or a non-serving RIS beam, and the channel information meets the transmission requirement of the terminal, a third notification is sent to an RIS device to which the non-serving RIS device or the non-serving RIS beam belongs according to the interference information; the third notification is used to indicate adjustment of beamforming. In a case where the measurement information comprises the channel information corresponding to a serving RIS device of the terminal and the interference information corresponding to a non-serving RIS device, and the channel information does not meet the transmission requirement of the terminal, a third notification is sent to the serving RIS device according to the channel information and the interference information; the third notification is used to indicate adjustment of beamforming; or a first notification is sent to the terminal according to the channel information and the interference information, and the first notification is used to indicate replacement of the serving RIS device. In a case where the measurement information comprises the channel information corresponding to a serving RIS beam of the terminal and the interference information corresponding to a non-serving RIS beam, and the channel information does not meet the transmission requirement of the terminal, a third notification is sent to an RIS device to which the serving RIS beam belongs according to the channel information and the interference information; the third notification is used to indicate adjustment of beamforming; or a first notification is sent to the terminal according to the channel information and the interference information, and the first notification is used to indicate replacement of the serving RIS beam. In a case where the measurement information comprises the channel information corresponding to a candidate serving RIS device or a candidate serving RIS beam of the terminal and the interference information corresponding to a non-candidate serving RIS device or a non-candidate serving RIS beam, at least one RIS device is selected as a serving RIS device of the terminal from the candidate serving RIS device according to the channel information; or at least one RIS beam is selected as a serving RIS beam of the terminal from the candidate serving RIS beam according to the channel information; a first notification is sent to the terminal, and a third notification is sent to other RIS devices; wherein the other RIS devices are RIS devices corresponding to other RIS measurement signals except a first RIS measurement signal in the at least two RIS measurement signals, or RIS devices to which RIS beams corresponding to the other RIS measurement signals belong, the first RIS measurement signal is a RIS measurement signal corresponding to the candidate serving RIS device or the candidate serving RIS beam; the first notification is used to indicate the serving RIS device or the serving RIS beam; and the third notification is used to indicate adjustment of beamforming.

23. The information transmitting apparatus according to claim 22, wherein In a case where the first notification is used to indicate to replace a serving RIS device or a serving RIS beam, the operation of controlling, according to the measurement information, the RIS beamforming adjustment further includes: sending, by the transceiver, a second notification to the terminal, the second notification being used to indicate a candidate serving RIS device or a candidate serving RIS beam.

24. The information transmitting apparatus according to claim 20, wherein The operation further includes: sending, by the transceiver, first base station configuration information and / or second base station configuration information to the terminal, the first base station configuration information being used to indicate first transmission parameters of RIS measurement signals, and the second base station configuration information being used to indicate reporting parameters of the measurement information; wherein the first transmission parameters include at least one of a receiving occasion and a transmission manner; and the reporting parameters include at least one of a reporting occasion and a reporting manner; and / or, sending, by the transceiver, third base station configuration information to the RIS device, the third base station configuration information being used to indicate second transmission parameters of RIS measurement signals; wherein the second transmission parameters include at least one of a sending occasion and a transmission manner. 25.An information transmission device, the information transmission device being a RIS device, the device comprising a memory, a transceiver, and a processor: the memory is configured to store a computer program; the transceiver is configured to transceive data under control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations: sending, by the transceiver, RIS measurement signals corresponding to the RIS device or a RIS beam of the RIS device; the RIS measurement signals being associated with the RIS device or the RIS beam in a first area.

26. The information transmitting apparatus according to claim 25, wherein The operation further includes: receiving, by the transceiver, a third notification sent by a base station; the third notification being used to indicate to adjust beamforming; adjusting, according to the third notification, an adjustment parameter corresponding to the RIS device or an adjustment parameter corresponding to a RIS beam of the RIS device.

27. The information transmitting apparatus according to claim 26, wherein The operation further includes: forwarding, by the transceiver, information sent by at least one base station according to the adjusted adjustment parameter.

28. The information transmitting apparatus of Claim 25, wherein The sending of the RIS measurement signals corresponding to the RIS device or the RIS beam of the RIS device includes: sending, according to second transmission parameters of RIS measurement signals indicated by third base station configuration information or third predefined information, the RIS measurement signals corresponding to the RIS device or the RIS beam of the RIS device; wherein the second transmission parameters include at least one of a sending occasion and a transmission manner. 29.An information transmission apparatus applied to a terminal, the apparatus comprising: a first measurement unit configured to measure at least two intelligent metasurface (RIS) measurement signals to obtain measurement information; the RIS measurement signals being associated with a RIS device or a RIS beam in a first area; the measurement information including channel information corresponding to the RIS measurement signals, or channel information corresponding to at least one of the RIS measurement signals and interference information corresponding to at least one of the RIS measurement signals; a first sending unit configured to send the measurement information to a base station.

30. An information transmission apparatus applied to a base station, the apparatus comprising: a third receiving unit configured to receive measurement information of at least two RIS measurement signals sent by at least one terminal; the RIS measurement signals are associated with a RIS device or a RIS beam in a first area; the measurement information comprises channel information corresponding to the RIS measurement signals, or channel information corresponding to at least one of the RIS measurement signals and interference information corresponding to at least one of the RIS measurement signals; a first control unit configured to control RIS beamforming adjustment according to the measurement information.

31. An information transmission apparatus applied to a RIS device, the apparatus comprising: a third sending unit configured to send RIS measurement signals corresponding to the RIS device or a RIS beam of the RIS device; the RIS measurement signals are associated with the RIS device or the RIS beam in a first area.

32. A non-transitory readable storage medium storing a program for causing a processor to execute the information transmission method of any one of claims 1 to 14.

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