Channel measurement method for intelligent reflecting surface assisted wireless network and base station

Abstract

A channel measurement method for an intelligent reflecting surface assisted wireless network and a base station (BS) using the same are provided. The method includes transmitting a measurement configuration including mode information of an intelligent reflecting surface to a user equipment, receiving a measurement report corresponding to the measurement configuration from the user equipment, wherein the measurement report corresponds to a channel between the user equipment and the intelligent reflecting surface, and outputting a command according to the measurement report.

Description

Technical Field

[0001] This disclosure relates to the field of wireless communication, and more particularly to a channel measurement method for a smart reflector-assisted wireless network and a base station (BS) using the method. Background Technology

[0002] An intelligent reflecting surface (IRS) can be implemented using a control circuit board, a copper backplane, and multiple reflective elements, and can be controlled by an IRS controller, such as... Figure 1 As shown. The reflective element may include one or more meta-atoms. To improve the performance of wireless communication, the IRS controller can configure or reconfigure the IRS using different electronic signals to change the reflection characteristics of the reflective element. Therefore, the reflective element can reflect the incident signal in different directions (e.g., Figure 1 (Direction #1 or direction #2 in the middle).

[0003] IRS is considered a key enabling technology for future wireless networks (e.g., 5G, beyond 5G, or 6G). IRS can be applied to improve signal reception within a cell, such as... Figure 2 As shown. In Figure 2 In a network, a concrete wall between the BS (Base Station) and the user equipment (UE) can severely degrade the signal quality transmitted directly from the BS to the UE. Interceptor Reflector (IRS) can be configured to reflect the signal from the BS to the UE to improve signal reception at the UE. IRS can also be used to improve signal reception at the cell edge, such as... Figure 3 As shown. In Figure 3 In this configuration, a UE located at the edge of BS#1 and BS#2 (e.g., UE#1 or UE#2) can receive signals from both BS#1 and BS#2. Taking UE#1 as an example, if UE#1 is served by BS#1, the IRS can be configured to improve the quality of the signal transmitted by BS#1 and degrade the quality of the signal transmitted by BS#2 at the UE#1 end. This minimizes the interference caused by BS#2 to UE#1.

[0004] Since different IRS modes can cause significant changes in the characteristics of the wireless channel, configuring the ideal operating mode for the IRS has become an important topic in this field. Summary of the Invention

[0005] This disclosure relates to a channel measurement method for an IRS-assisted wireless network and a base station using the method.

[0006] A channel measurement method for a smart reflector-assisted wireless network applicable to a base station includes: transmitting a measurement configuration including mode information of the smart reflector to a user equipment; receiving a measurement report corresponding to the measurement configuration from the user equipment, wherein the measurement report corresponds to the channel between the user equipment and the smart reflector; and outputting a command based on the measurement report.

[0007] In one embodiment, commands are transmitted to the smart reflective surface to configure it.

[0008] In one embodiment, a command is transmitted to a second base station to switch the user equipment to the second base station.

[0009] In one embodiment, the mode information includes at least one of the following: the current smart reflector setting, an index of the smart reflector operating mode, or a pattern of multiple smart reflector operating modes.

[0010] In one embodiment, the measurement report is associated with a subset of multiple smart reflective operating modes supported by the smart reflective surface.

[0011] In one embodiment, the subset includes one of the following: each of a plurality of smart reflective operating modes; the best operating mode among the plurality of smart reflective operating modes; the best K operating modes among the plurality of smart reflective operating modes, where K is a positive integer and K is less than the number of the plurality of smart reflective operating modes; an operating mode corresponding to an index, where the index is indicated by mode information; an operating mode corresponding to a measurement result, where the measurement result is greater than a threshold; and an operating mode corresponding to a first measurement result, where the difference between the first measurement result and a second measurement result corresponding to a smart reflective disabled mode is greater than an offset.

[0012] In one embodiment, the measurement report corresponds to at least one of the following: reference symbol received power, received signal strength indication, reference signal received quality, or signal-to-interference and noise ratio.

[0013] In one embodiment, the measurement report includes channel quality.

[0014] In one embodiment, channel quality includes the average of multiple measurements, each of which corresponds to a different smart reflector operating mode.

[0015] In one embodiment, channel quality includes the average of multiple measurements taken within a measurement period.

[0016] In one embodiment, the channel quality is derived from a first measurement result corresponding to the current measurement time and a second measurement result corresponding to a previous measurement time.

[0017] In one embodiment, the measurement report includes the measurement time.

[0018] In one embodiment, the measurement configuration is transmitted via periodic broadcast signaling.

[0019] In one embodiment, periodic broadcast signaling includes a system information block.

[0020] In one embodiment, the measurement configuration is transmitted via unicast signaling.

[0021] In one embodiment, unicast signaling includes a radio resource control reconfiguration message.

[0022] In one embodiment, the method further includes: transmitting a measurement command to a user equipment to trigger channel measurements for generating a measurement report.

[0023] In one embodiment, a measurement report is generated in response to a channel measurement result exceeding a threshold.

[0024] In one embodiment, a measurement report is generated in response to a channel measurement result being less than or equal to a threshold.

[0025] In one embodiment, the method further includes: allocating uplink resources for the measurement report.

[0026] In one embodiment, the method further includes: pre-allocating uplink resources for measurement reports.

[0027] In one embodiment, measurement reports are transmitted via periodic uplink resources.

[0028] A base station for a smart reflector-assisted wireless network includes: a transceiver; and a processor coupled to the transceiver and configured to: transmit a measurement configuration including mode information of the smart reflector to a user equipment; receive a measurement report corresponding to the measurement configuration from the user equipment, wherein the measurement report corresponds to a channel between the user equipment and the smart reflector; and output a command based on the measurement report.

[0029] To make the above content easier to understand, several embodiments will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0030] This document includes accompanying drawings to provide a further understanding of the present disclosure, and the drawings are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with this description, serve to explain the principles of the present disclosure.

[0031] Figure 1 A schematic diagram of the IRS is shown;

[0032] Figure 2 A schematic diagram illustrating how IRS improves wireless signal reception in blind spots is shown.

[0033] Figure 3 This diagram illustrates how IRS improves wireless signal reception at the cell edge.

[0034] Figure 4 The following is an exemplary embodiment of the signaling flow of a measurement initiated by a BS for making a handover decision, according to the present disclosure.

[0035] Figure 5 The signaling flow for a measurement initiated by a BS for IRS configuration is shown in an exemplary embodiment of this disclosure.

[0036] Figure 6 The signaling flow for a one-time report initiated by a UE for IRS configuration is illustrated according to an exemplary embodiment of this disclosure;

[0037] Figure 7 This illustrates a signaling flow for periodic reporting initiated by a UE for IRS configuration, according to an exemplary embodiment of this disclosure;

[0038] Figure 8 The present disclosure illustrates a signaling flow for UE assistance information for IRS configuration according to an exemplary embodiment of the present disclosure.

[0039] Figure 9 A schematic diagram illustrating channel quality measurements of IRSs with different IRS operating modes according to an exemplary embodiment of the present disclosure;

[0040] Figure 10 A schematic diagram of channel measurement filtering for cell quality reporting according to an exemplary embodiment of the present disclosure is shown;

[0041] Figure 11 A schematic diagram of a base station according to an exemplary embodiment of the present disclosure is shown;

[0042] Figure 12 A flowchart illustrating a channel measurement method for an IRS-assisted wireless network according to an exemplary embodiment of the present disclosure is shown.

[0043] Explanation of reference numerals in the attached figures

[0044] 100: Base station;

[0045] 110: Processor;

[0046] 120: Storage medium;

[0047] 130: Transceiver;

[0048] S121, S122, S123, S401, S402, S403, S404, S405, S501, S502, S503, S504, S505, S506, S601, S602, S603, S604, S605, S701, S702, S703, S704, S705, S706, S801, S802, S803, S804, S805: Steps. Detailed Implementation

[0049] To further describe the contents of this disclosure, embodiments will be described below as examples upon which this disclosure can be implemented. Furthermore, elements / components / steps indicated by the same reference numerals in the drawings and embodiments represent the same or similar parts as much as possible.

[0050] Figure 4 This illustration shows a signaling flow for a measurement initiated by a BS for making a handover decision according to an exemplary embodiment of the present disclosure, wherein the base station may include, for example, a next-generation Node B (gNB), an evolved Node B (eNB), a Node B, a home eNB, a macro BS, or a pico BS, and the UE may include, for example, a radio device, a master node (MN), an Internet of Things (IoT) device, a mobile station (MS), or a subscriber station (SS).

[0051] A base station operating using one or more IRSs can configure a UE to perform channel measurements. An IRS may include an IRS controller, a meta-surface with multiple reflective elements, a control board coupled to the IRS controller, and a copper baseplate connecting the control board to the meta-surface. The IRS controller may include a wireless transceiver to receive or transmit signaling for the operation and / or configuration of the IRS. The IRS controller may include a microprocessor, a field-programmable gate array (FPGA), or an application-specific integrated circuit (ASIC). Reflective elements may include multiple meta-atoms, each of which may be implemented using a PIN (positive-intrinsic-negative) node, a field-effect transistor (FET), a micro-electromechanical system (MEMS) switch, or a tunable chip.

[0052] As shown in step S401, the base station can transmit measurement configuration to the UE via signaling messages (e.g., radio resource control (RRC) reconfiguration messages), whereby the measurement configuration may include mode information for one or more IRSs. The mode information corresponding to an IRS may include current IRS settings (e.g., current IRS parameter settings), an index of IRS operating modes, or a pattern of multiple IRS operating modes. The mode information can indicate to the UE multiple operating modes of IRSs corresponding to multiple measurement times. For example, the pattern included in the mode information may indicate a first operating mode of the IRS corresponding to a first measurement time and a second operating mode of the IRS corresponding to a second measurement time, where the second measurement time is different from the first measurement time. The UE can know from the mode information that the IRS is in the first operating mode at the first measurement time and in the second operating mode at the second measurement time.

[0053] After the UE receives the measurement configuration from the base station, the UE can perform channel measurements between the UE and the IRS according to the measurement configuration (or mode information), as shown in step S402. In one embodiment, the base station can transmit a measurement command to the UE to trigger the UE to perform channel measurements according to the measurement configuration. The UE can generate a measurement report based on the measurement results of the channel between the UE and the IRS, wherein the measurement report may include measurement results associated with, for example, reference symbol received power (RSRP), received signal strength indication (RSSI), reference signal received quality (RSRQ), or signal to interference plus noise ratio (SINR).

[0054] Assuming an IRS has multiple IRS operating modes, the measurement configuration can instruct the UE to measure channel conditions corresponding to all IRS operating modes or to measure channel conditions corresponding to a subset of the multiple IRS operating modes. Therefore, the measurement report generated by the UE can be associated with channel conditions corresponding to all IRS operating modes or with channel conditions corresponding to a subset of the multiple IRS operating modes, where the subset may include: each of the multiple IRS operating modes; the best operating mode among the multiple IRS operating modes; the K best operating modes among the multiple IRS operating modes (where K is a positive integer less than the number of the multiple IRS operating modes); the operating mode corresponding to an index indicated by mode information; the operating mode corresponding to a measurement result, where the measurement result is greater than a predefined threshold; or the operating mode corresponding to a first measurement result, where the difference between the first measurement result and a reference measurement result corresponding to an IRS disabled mode is greater than a predefined offset.

[0055] After generating a measurement report associated with the IRS, the UE can transmit the measurement report to the base station via uplink (UL) resources, as shown in step S404. In one embodiment, in response to transmitting the measurement configuration to the UE, the base station can allocate UL resources for the measurement report to the UE, as shown in step S403. In one embodiment, the base station can pre-allocate UL resources for the measurement report to the UE. The measurement report may include measurement results, measurement configuration, or configuration of IRS operating modes. For example, the measurement report may include an index of IRS operating modes measured by the UE, a selected IRS operating mode corresponding to measurement results greater than a threshold, or an average of multiple measurement results generated by the UE, wherein the multiple measurement results may each correspond to multiple IRS operating modes of the IRS.

[0056] After receiving the measurement report, the base station can make a handover decision (or IRS operating mode decision) based on the measurement report, as shown in step S405. The decision in step S405 can be associated with the target cell or with the IRS operating mode of the IRS corresponding to the target cell. In one embodiment, the base station can output a handover command to the target base station based on the measurement report to notify the target base station that the base station will hand over the UE to the target base station. On the other hand, the base station can transmit a handover command to the UE based on the measurement report to notify the UE to hand over to the target base station.

[0057] In one embodiment, the base station can output IRS configuration commands to the IRS to configure the IRS. Figure 5 This illustration shows a signaling flow for a measurement initiated by a BS for IRS configuration according to an exemplary embodiment of the present disclosure. In step S501, the base station transmits the measurement configuration to the UE via a signaling message such as an RRC reconfiguration message. In step S502, the UE performs channel measurements between the UE and the IRS based on the measurement configuration. In step S503, the base station allocates UL resources to the UE. In step S504, the UE transmits a measurement report to the base station via UL resources. In step S505, the base station makes an IRS operating mode decision (or handover decision) based on the measurement report. In step S506, the base station transmits an IRS configuration command to the IRS based on the decision made in step S505 to configure the IRS operating mode. The IRS configuration can improve the channel quality between the UE and the IRS, or reduce interference caused by the IRS to the UE.

[0058] Channel measurements for IRS-assisted wireless networks can be initiated by the UE. Figure 6This illustration shows a signaling flow for a one-time report initiated by a UE for IRS configuration, according to an exemplary embodiment of this disclosure. The UE may receive measurement configurations, such as IRS mode pattern information, from a base station, as shown in step S601. In one embodiment, the base station may transmit the IRS mode pattern information via periodic broadcast signaling, such as a system information block (SIB). In another embodiment, the base station may transmit the IRS mode pattern information via unicast signaling, such as an RRC reconfiguration message.

[0059] As shown in step S602, the UE can perform channel measurements on the IRS according to IRS pattern information, wherein the IRS pattern information can indicate multiple IRS operating modes and multiple measurement times corresponding to the multiple IRS operating modes respectively. The UE can perform channel measurements according to the multiple IRS operating modes and the multiple measurement times. For example, the IRS pattern can indicate the IRS index corresponding to the measurement time t. The UE can measure the channel between the UE and the IRS at measurement time t and can generate a measurement report accordingly, wherein the measurement report can include the measurement result of the channel between the UE and the IRS at measurement time t and the IRS operating mode at measurement time t. In one embodiment, the measurement report can also include the measurement time (e.g., measurement time t) in the form of, for example, frame number or slot index. The measurement report can be generated or transmitted by the UE based on criteria of the measurement results (e.g., transmitted to the base station), as shown in step S603. For example, the UE can generate or transmit the measurement report in response to a channel measurement result (e.g., RSRP, RSSI, RSRQ, or SINR) being greater than a threshold. For another example, the UE may generate or transmit a measurement report in response to a channel measurement result being less than or equal to a threshold. In step S604, the base station may make an IRS operating mode decision (or handover decision) based on the measurement report. In step S605, the base station may transmit an IRS configuration command to the IRS based on the decision made in step S604 to configure the IRS operating mode.

[0060] In one embodiment, the UE may periodically transmit measurement reports to the base station. Figure 7This illustration shows a signaling flow for periodic reporting initiated by a UE for IRS configuration according to an exemplary embodiment of the present disclosure. In step S701, the base station may transmit measurement configuration, such as IRS pattern information, to the UE, wherein the IRS pattern information may include a measurement period. The UE may periodically perform channel measurements according to the measurement period. As shown in steps S702 and S704, the time difference between two measurements may be equal to the measurement period. The UE may transmit a measurement report to the base station after each channel measurement is completed, as shown in steps S703 and S705. In step S706, the base station may transmit an IRS configuration command to the IRS based on the decision made in step S703 or step S705.

[0061] Figure 8 This illustration shows a signaling flow for UE assistance information for IRS configuration according to an exemplary embodiment of the present disclosure. In step S801, the base station may transmit measurement configurations, such as IRS mode pattern information, to the UE. In step S802, the UE may perform channel measurements according to the measurement configurations. After the channel measurements are completed, the UE may generate and transmit UE assistance information (e.g., transmit it to the base station) based on the measurement results of the channel between the UE and the IRS and the IRS mode pattern information, as shown in step S803. The UE assistance information may include one or more recommended configurations of the IRS operating mode. For example, if the measurement result of the IRS operating mode corresponding to index j is better than a threshold, the UE may transmit a UE assistance information message including index j to the base station. For another example, if the measurement result of the IRS operating mode corresponding to index k satisfies criterion (1), the UE can transmit a UE assistance information message including index k to the base station, where R(k) represents the measurement result corresponding to the IRS operating mode k and R(0) represents the measurement result corresponding to the IRS disabled mode, wherein the measurement result can be associated with RSRP, RSSI, RSRQ or SINR.

[0062] R(k)–R(0)>offset…(1)

[0063] After receiving UE assistance information, the base station can make an IRS operating mode decision based on the UE assistance information, as shown in step S804. In step S805, the base station can transmit an IRS configuration command to the IRS based on the decision made in step S804 to configure the IRS operating mode.

[0064] The UE can report a set of indices of the IRS operating mode, the corresponding measurement results, or the average value of the corresponding measurement results to the base station through the measurement report, wherein the measurement results corresponding to these indices are greater than the threshold. Figure 9This diagram illustrates channel quality measurements (or measurement results) for IRSs with different operating modes according to an exemplary embodiment of this disclosure. In one embodiment, since the channel quality corresponding to indices #1 and #3 is higher than a threshold, the UE may not report index #2 to the base station, but only reports indices #1 and #3. In another embodiment, the UE may not report the measurement result corresponding to index #2, but only reports the measurement results corresponding to indices #1 and #3, respectively. In yet another embodiment, the UE may report the average value of the measurement results corresponding to indices #1 and #3, respectively.

[0065] Figure 10 This diagram illustrates channel measurement filtering for cell quality reporting according to an exemplary embodiment of this disclosure. The UE can measure the channel quality between the UE and an IRS with different IRS operating modes. Measurement reports (or measurement results) transmitted from the UE to the base station may include measurements of channel quality. For example, Figure 10 The UE can measure the channel quality between the UE and the IRS, where the channel quality can include the channel quality corresponding to IRS operating mode #1, IRS operating mode #2, and IRS operating mode #3. Specifically, the UE can perform channel measurements for each IRS operating mode by applying L1 filtering.

[0066] In one embodiment, the UE may estimate the average of the measurements (or the number of measurements) within a measurement period using, for example, a moving average method. The channel quality in the measurement report may include the average of the measurement results.

[0067] In one embodiment, multiple measurement results corresponding to different IRS operating modes (i.e., multiple measurement results generated by the UE) may be individually selected or combined by the UE or the base station. The channel quality (or cell quality) in the measurement report may include one or more selected measurement results and / or a weighted average of the one or more selected measurement results. For example, the best measurement result among the multiple measurement results may be selected. For example, the best K measurement results among the multiple measurement results may be selected, where K is a positive integer less than or equal to the number of the multiple measurement results. For example, a measurement result may be selected from the multiple measurement results in response to a selected measurement result being greater than a threshold. In response to the reporting criteria being met, the UE may report the measurement results as a cell quality report to the base station.

[0068] In one embodiment, a combined measurement corresponding to multiple measurement times or multiple IRS operating modes can be performed by the UE or the base station. The channel quality (or cell quality) in the measurement report may include the combined measurement results. In one embodiment, the UE can perform a combined measurement of the channel between the UE and the IRS by applying L3 filtering. The combined measurement results can be updated according to formula (2), where X(t) represents the combined measurement result at measurement time t, X(t-1) represents the combined measurement result at measurement time (t-1), M(t) represents the new channel measurement result at time t, and w represents the weight (typically, w is between 0 and 1). In response to the reporting criteria being met, the UE can report the combined measurement results as a cell quality report to the base station.

[0069] X(t)=(1-w)*X(t-1)+w*M(t)…(2)

[0070] Figure 11 This diagram illustrates a base station according to an exemplary embodiment of the present disclosure. Base station 100 may include a processor 110, a storage medium 120, and a transceiver 130. The processor 110 is coupled to the storage medium 120 and the transceiver 130 and is configured to at least implement... Figures 1 to 10 The methods described herein, as well as exemplary embodiments and alternative variations thereof.

[0071] Processor 110 can be implemented using programmable units such as microprocessors, microcontrollers, digital signal processing (DSP) chips, and FPGAs. The functions of processor 110 can also be implemented using separate electronic devices or integrated circuits (ICs). It should be noted that the functions of processor 110 can be implemented using either hardware or software.

[0072] Storage medium 120 may be any type of fixed or removable random access memory (RAM), read-only memory (ROM), flash memory, hard disk drive (HDD), solid state drive (SSD), or similar element, or a combination thereof, configured to record multiple modules or various applications that can be executed by processor 110.

[0073] Transceiver 130 can be configured to transmit and receive signals at radio frequency or millimeter-wave frequency, respectively. Transceiver 130 can also perform operations such as low-noise amplification, impedance matching, mixing, up-conversion or down-conversion, filtering, and amplification. Transceiver 130 may include one or more digital-to-analog (D / A) converters or analog-to-digital (A / D) converters configured to convert from analog signal format to digital signal format during uplink signal processing and from digital signal format to analog signal format during downlink signal processing. Transceiver 130 may include an antenna array that may include one or more antennas to transmit and receive omnidirectional or directional antenna beams.

[0074] Figure 12 A flowchart illustrating a channel measurement method for an IRS-assisted wireless network according to an exemplary embodiment of the present disclosure is shown, wherein the method is applicable to, Figure 11 The base station 100 is shown. In step S121, a measurement configuration including mode information of the smart reflector is transmitted to the user equipment. In step S122, a measurement report corresponding to the measurement configuration is received from the user equipment, wherein the measurement report corresponds to the channel between the user equipment and the smart reflector. In step S123, a command is output based on the measurement report.

[0075] In summary, the base station disclosed herein can trigger the UE to provide a measurement report associated with the channel between the UE and the IRS. The base station can then configure an operating mode for the IRS based on the measurement report to improve the channel quality between the UE and the IRS.

[0076] It will be apparent to those skilled in the art that various modifications and alterations can be made to the disclosed embodiments without departing from the scope or spirit of this disclosure. In view of the foregoing, this disclosure is intended to cover various modifications and variations falling within the scope of the appended claims and their equivalents.

Claims

1. A channel measurement method for a smart reflector-assisted wireless network suitable for base stations, characterized in that, include: The measurement configuration, including mode information of the smart reflector, is transmitted to the user equipment. The mode information includes patterns of multiple smart reflector operation modes, including a first smart reflector operation mode corresponding to a first measurement time and a second smart reflector operation mode corresponding to a second measurement time. Receive a measurement report corresponding to the measurement configuration from the user equipment, wherein the measurement report corresponds to the channel between the user equipment and the smart reflector, and the measurement report includes the channel quality corresponding to the first smart reflector operating mode at the first measurement time and the channel quality corresponding to the second smart reflector operating mode at the second measurement time; as well as Output commands based on the measurement report.

2. The method of claim 1, wherein the command is transmitted to the smart reflective surface to configure the smart reflective surface.

3. The method according to claim 1, wherein the command is transmitted to the second base station to switch the user equipment to the second base station.

4. The method according to claim 1, wherein the mode information includes at least one of the following: the current smart reflector setting, or an index of the smart reflector operation mode.

5. The method of claim 1, wherein the measurement report is associated with a subset of a plurality of smart reflective surface operating modes supported by the smart reflective surface.

6. The method of claim 5, wherein the subset comprises one of the following: Each of the multiple intelligent reflective surface operation modes; The optimal operating mode among the multiple intelligent reflective surface operating modes; The K best operating modes among the plurality of intelligent reflective surface operating modes, where K is a positive integer and K is less than the number of the plurality of intelligent reflective surface operating modes; An operation mode corresponding to an index, wherein the index is indicated by the mode information; An operating mode corresponding to the measurement result, wherein the measurement result is greater than a threshold; as well as An operating mode corresponding to the first measurement result, wherein the difference between the first measurement result and the second measurement result corresponding to the smart reflective surface disabled mode is greater than the offset.

7. The method of claim 1, wherein the measurement report corresponds to at least one of the following: reference symbol received power, received signal strength indication, reference signal received quality, or signal-to-interference and noise ratio.

8. The method of claim 1, wherein the measurement report includes channel quality.

9. The method of claim 8, wherein the channel quality comprises the average of a plurality of measurements, wherein the plurality of measurements correspond to a plurality of smart reflector operating modes.

10. The method of claim 8, wherein the channel quality comprises the average of multiple measurements within a measurement period.

11. The method of claim 8, wherein the channel quality is derived from a first measurement result corresponding to the current measurement time and a second measurement result corresponding to a previous measurement time.

12. The method of claim 1, wherein the measurement report includes the measurement time.

13. The method of claim 1, wherein the measurement configuration is transmitted via periodic broadcast signaling.

14. The method of claim 13, wherein the periodic broadcast signaling includes a system information block.

15. The method of claim 1, wherein the measurement configuration is transmitted via unicast signaling.

16. The method of claim 15, wherein the unicast signaling includes a radio resource control reconfiguration message.

17. The method according to claim 1, further comprising: The measurement command is transmitted to the user equipment to trigger channel measurements for generating the measurement report.

18. The method of claim 1, wherein the measurement report is generated in response to a measurement result of the channel being greater than a threshold.

19. The method of claim 1, wherein the measurement report is generated in response to a measurement result of the channel being less than or equal to a threshold.

20. The method according to claim 1, further comprising: Allocate uplink resources for the measurement report.

21. The method according to claim 1, further comprising: Uplink resources are pre-allocated for the measurement report.

22. The method of claim 1, wherein the measurement report is transmitted via periodic uplink resources.

23. A base station for a smart reflector-assisted wireless network, characterized in that, include: transceiver; as well as The processor, coupled to the transceiver, is configured to: The measurement configuration, including mode information of the smart reflector, is transmitted to the user equipment. The mode information includes patterns of multiple smart reflector operation modes, including a first smart reflector operation mode corresponding to a first measurement time and a second smart reflector operation mode corresponding to a second measurement time. Receive a measurement report corresponding to the measurement configuration from the user equipment, wherein the measurement report corresponds to the channel between the user equipment and the smart reflector, and the measurement report includes the channel quality corresponding to the first smart reflector operating mode at the first measurement time and the channel quality corresponding to the second smart reflector operating mode at the second measurement time; as well as Output commands based on the measurement report.

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