CN118041406A - Beam processing method, device, communication equipment and readable storage medium - Google Patents
Beam processing method, device, communication equipment and readable storage medium Download PDFInfo
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- H—ELECTRICITY
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
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Abstract
The application discloses a beam processing method, a device, communication equipment and a readable storage medium, which belong to the technical field of communication, and the beam processing method of the embodiment of the application comprises the following steps: the communication device obtains a first measured value and a second measured value of the first signal; determining parameters of a first beam according to the first measured value, and determining parameters of a second beam according to the second measured value; wherein the first beam is a beam that the first device sends to the second device and is used to provide energy for the second device; the second beam is a beam of a first device in data communication with a second device; the communication device is the first device or a third device.
Description
Technical Field
The application belongs to the technical field of communication, and particularly relates to a beam processing method, a device, communication equipment and a readable storage medium.
Background
In the architecture based on downlink energy beam energy supply and uplink beam reception, the architecture is limited by energy storage capacity and energy conversion efficiency, and the problem of communication coverage exists in the uplink of terminal equipment based on radio frequency energy acquisition. In order to increase the coverage distance, the receiving end can use a beamforming technology to obtain beamforming gain, so as to increase communication coverage. There are problems in that the apparatus for providing the downlink energy beam is the same apparatus as the apparatus for providing the uplink communication reception beam, and since the beam quality evaluation criteria of the energy beam and the communication beam are different, the conventional beam consistency (Beamcorrespondence) is no longer applicable in the architecture based on the downlink energy beam power supply and the uplink beam reception. In this case, how to obtain both the better energy-shaped beam and the communication-shaped beam is an urgent problem to be solved at present.
Disclosure of Invention
The embodiment of the application provides a beam processing method, a device, communication equipment and a readable storage medium, which can solve the problem of how to obtain better energy forming beams and communication forming beams at the same time.
In a first aspect, a beam processing method is provided, including:
The communication device obtains a first measured value and a second measured value of the first signal;
The communication device determines parameters of a first beam according to the first measured value and determines parameters of a second beam according to the second measured value; wherein the first beam is a beam that is transmitted by a first device to a second device and is used to provide energy for the second device; the second beam is a beam of a first device in data communication with a second device; the communication device is the first device or a third device.
In a second aspect, there is provided a beam processing apparatus comprising:
the acquisition module is used for acquiring a first measured value and a second measured value of the first signal;
a determining module, configured to determine a parameter of a first beam according to the first measurement value, and determine a parameter of a second beam according to the second measurement value; wherein the first beam is a beam that is transmitted by a first device to a second device and is used to provide energy for the second device; the second beam is a beam of a first device in data communication with a second device.
In a third aspect, there is provided a communication device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.
In a fourth aspect, a communication system is provided, comprising a first device and a second device, or comprising a first device, a second device and a third device, the first device or the third device being operable to perform the steps of the beam processing method according to the first aspect.
In a fifth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor realizes the steps of the method according to the first aspect.
In a sixth aspect, there is provided a chip comprising a processor and a communication interface coupled to the processor for running a program or instructions implementing the steps of the method according to the first aspect.
In a seventh aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to carry out the steps of the method according to the first aspect.
In the embodiment of the application, a first measured value and a second measured value of a first signal are obtained, a parameter of a first wave beam is determined according to the first measured value, and a parameter of a second wave beam is determined according to the second measured value, wherein the first wave beam is a wave beam which is sent by a first device to a second device and is used for providing energy for the second device; the second beam is a beam of the first device which performs data communication with the second device, and a better energy forming beam and a better communication forming beam can be obtained at the same time based on the same signal, so that the selected energy forming beam (namely the first beam) can provide a radio frequency energy supply effect with stronger power, and the selected communication forming beam (namely the second beam) can obtain a better beam forming gain.
Drawings
FIG. 1A is a block diagram of a single-base backscatter communication system to which embodiments of the present application are applicable;
FIG. 1B is a block diagram of a bistatic backscatter communications system to which embodiments of the present application may be applied;
Fig. 2 is a flowchart of a beam processing method according to an embodiment of the present application;
FIG. 3 is a schematic diagram of beams in a first embodiment of the application;
fig. 4 is a schematic diagram of a beam in a second embodiment of the present application;
Fig. 5 is a schematic view of beams in a third embodiment of the present application;
Fig. 6 is a schematic structural diagram of a beam processing apparatus according to an embodiment of the present application;
Fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application.
Detailed Description
The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.
It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the described techniques may be used for both the above-mentioned systems and Radio technologies, as well as other systems and Radio technologies, such as New Radio (NR) systems, or 6 th Generation (6 th Generation, 6G) communication systems, etc.
In order to facilitate understanding of the embodiments of the present application, the following is first described.
Backscatter communication (Backscatter Communication, BSC), which means that a backscatter communication device uses radio frequency signals in other devices or environments to modulate signals to transmit its own information, is a relatively typical passive internet of things device. The basic constitution module of the back scattering communication transmitting end comprises the following main functions:
-an antenna unit: for receiving radio frequency signals, control commands, and for transmitting modulated backscatter signals.
-An energy harvesting module or an energy supply module: the module is used for radio frequency energy harvesting by the backscatter communications device, or other energy harvesting, including but not limited to solar energy, kinetic energy, mechanical energy, thermal energy, etc. In addition to the energy harvesting module, a battery powered module may be included, where the backscatter communications device is a semi-passive device. The energy harvesting module or the energy supply module supplies power to all other modules in the device.
-A microcontroller: including control of baseband signal processing, energy storage or data scheduling states, switching, system synchronization, etc.
-A signal receiving module: for demodulating control commands or data and the like sent by a backscatter communication receiver or other network node.
-A channel coding and modulation module: channel coding and signal modulation are performed under the control of a controller, and modulation is realized by selecting different load impedances through a selection switch under the control of the controller.
-A memory or sensing module: for storing identification ID information, location information, or sensor data of the device, etc.
In addition to the above-described typical constituent modules, the future backscatter communication transmitter may also incorporate a tunnel diode amplifier module, a low noise amplifier module, or the like for improving the reception sensitivity and transmission power of the transmitter.
Optionally, the basic constituent modules of the backscatter communication receiver, i.e. the reader, include:
-an antenna unit: for receiving the modulated backscatter signal.
-A backscatter signal detection module: for detecting the backscatter signal transmitted by the backscatter communication transmitter, including, but not limited to, amplitude shift keying (Amplitude SHIFT KEYING, ASK) detection, phase-shift keying (Phase-SHIFT KEYING, PSK) detection, frequency shift keying (Frequency-SHIFT KEYING, FSK) detection, quadrature Amplitude modulation (Quadrature Amplitude Modulation, QAM) detection, etc.
-A demodulation and decoding module: the detected signal is demodulated and decoded to recover the original information stream.
The backscatter communication device controls the reflection coefficient Γ of the modulation circuit by adjusting its internal impedance, thereby changing the amplitude, frequency, phase, etc. of the incident signal, effecting modulation of the signal. Wherein the reflection coefficient of the signal can be characterized as:
Where Z 0 is the antenna characteristic impedance, Z 1 is the load impedance, j represents the complex number, and θ T represents the phase. Assuming that the incident signal is S in (t), the output signal is Thus, by reasonably controlling the reflection coefficient, a corresponding amplitude modulation, frequency modulation or phase modulation can be achieved. Based on this, the backscatter communication device may be a Tag in a conventional radio frequency identification (Radio Frequency Identification, RFID) or a Passive or Semi-Passive internet of things (IoT). For convenience, referred to herein as BSC devices.
Fig. 1A shows a schematic diagram of a single-base backscatter communication system (Monostatic Backscatter Communication System, MBCSs) to which embodiments of the present application are applicable. The MBCS system includes a BSC transmitting device (e.g., tag) and a Reader including an RF radio frequency source and a BSC receiving device, the RF radio frequency source being configured to generate RF radio frequency signals to power the BSC transmitting device/Tag. The BSC transmitting device back scatters the modulated RF signal, and the BSC receiving device in the Reader receives the back scattered signal and then demodulates the signal. The RF source and BSC receiving device are in the same device, such as a Reader herein, and thus become a single-station backscatter communication system. MBCS systems are typically used for short-range backscatter communications, such as conventional RFID applications, because the RF radio frequency signals transmitted from the BSC transmitting device experience a double near-far effect due to the signal attenuation of the round-trip signals, and thus the energy attenuation of the signals is large.
Fig. 1B shows a schematic diagram of a bistatic backscatter communication system (Bistatic Backscatter Communication Systems, BBCSs) to which embodiments of the present application are applicable. Unlike the monostatic backscatter communication systems (Monostatic Backscatter Communication System, MBCSs), the RF source, BSC transmitting device, and BSC receiving device in the BBCS system are separate, so that the problem of large round trip signal attenuation can be avoided. In addition, the performance of BBCS communication systems may be further improved by the proper placement of the RF sources. Notably, the ambient backscatter communication system ABCSs is also one of a bistatic backscatter communication system, but unlike the radio frequency source in the BBCS system, which is a dedicated signal radio frequency source, the radio frequency source in the ABCS system can be a radio frequency source in a usable environment, such as: television towers, cellular base stations, wiFi signals, bluetooth signals, etc.
For coverage in backscatter communication, forward and reverse coverage of backscatter communication face a large technical challenge due to the influence of transmission power of network nodes, two-way link attenuation, energy storage efficiency and energy storage capacity of energy storage circuits, receiving sensitivity of backscatter communication equipment, receiving-transmitting antenna gain, signal interference and the like. In particular, for the forward link from the network node to the backscatter communications device, the signal strength or sensitivity of the backscatter communications device to receive radio frequency signals for powering is approximately-20 dBm, whereas the receiver sensitivity of a conventional terminal device is approximately-100 dBm, since the drive energy harvesting circuit requires several to tens of uW of energy to operate. If the backscatter communication device is energy storage capable, its reception sensitivity for receiving radio frequency signals for powering may relax to-30 dBm. In addition, considering the characteristics of the energy harvesting circuit, that is, the lower the power of the input signal, the lower the energy conversion efficiency, so that when the power of the input radio frequency signal is lower than-23 dBm, the energy harvesting circuit is difficult to efficiently harvest the signal and rectify the signal into a usable direct current voltage. On the other hand, in the reverse link from the backscatter communication device to the network node, the signal strength of the backscatter is about 3dB to 5dB lower than the signal strength of the incident energizing signal, since part of the signal energy is used to energize. In addition, the antenna gain of low hardware cost backscatter communications devices is typically not too great, on the order of 0dBi to 2dBi.
The use of a split architecture and an integrated low power amplifier are all effective ways to improve backscatter communications coverage. In addition, the energy of the radio frequency signal can be concentrated by using the MIMO beamforming technology, and the problem of backscatter communication coverage can be effectively improved by combining an energy acquisition circuit with high energy conversion efficiency. Under the constraint condition that the energy collection of the back scattering communication equipment is maximized, the forward coverage can be effectively enhanced by combining the mixed beam forming of the radio frequency source and the combined beam forming scheme of the receiving end and the transmitting end of the passive beam forming in the back scattering equipment.
In a system requiring radio frequency power supply such as backscatter communication (for example, a backscatter communication device), since the backscatter communication device needs to rely on radio frequency signal power supply of other devices to perform data transmission, and is affected by the receiving sensitivity of the backscatter communication device, the sensitivity of the backscatter communication device for receiving the power supply signal is about-20 dBm to-30 dBm, and the sensitivity for receiving the communication data is about-50 dBm to-60 dBm, the radio frequency power supply becomes a bottleneck for restricting the transmission distance of the backscatter communication. Because the attenuation of uplink and downlink transmission signals is related to the distance between nodes, in the following behavior example, when a backscattering communication device which is closer to energy supply devices such as a base station is harvested to more energy, less energy is needed to meet the uplink transmission requirement; conversely, a backscatter communication device farther from the base station requires more energy to meet the uplink transmission demand while harvesting less energy, a phenomenon known as the double near-far effect. The double near-far effect problem can be solved based on energy beam forming, and more energy is harvested by a far user by controlling the width and the power of the beam.
In addition to backscatter communications, some terminal devices that are not battery powered or are costly to replace batteries may also be powered based on radio frequency energy. Such devices may harvest and store energy based on wireless radio frequency energy of the network node and autonomously generate carrier signals for communication transmissions using the harvested energy.
In the conventional beam forming (beamforming) in 5G NR, the phase of each element in an antenna array is adjusted to generate a beam with directivity, so as to improve transmission coverage, improve edge throughput, suppress interference, and the like. In addition, if the characteristics of high space freedom degree of the channel are fully utilized to realize multi-stream transmission, the system capacity and the user rate can be improved. The beam alignment of the receiving and transmitting end is a precondition for realizing the multi-antenna reliability transmission, and comprises the steps of beam selection, beam measurement, beam reporting and the like. The existing beam transmission is mainly designed for communication service, so that parameters such as Layer 1reference signal received power (Layer 1Reference Signal Received Power,L1-RSRP) of reference signals, layer 1 signal-to-interference-plus-noise ratio (Layer 1Signal to Interference plus Noise Ratio,L1-SINR) and the like are used as signal quality evaluation criteria for beam measurement and beam selection in the beam measurement process. And the energy supply equipment can also adopt the directional beam to carry out beamforming energy transmission, so that the problems of energy conversion efficiency and near-far effect of the communication equipment to be supplied with energy are improved. However, unlike the existing NR system, which uses parameters such as L1-RSRP, L1-SINR, etc. of communication signals as signal quality evaluation criteria for beam measurement and beam selection, energy beams based on energy transmission do not need to consider that the signal quality of the selected beam is optimal, but only the selected energy-shaped beam needs to be considered to provide the strongest power, including the sum of the total power from the useful signal, the interfering signal, and the noise. Therefore, for the beam of energy beam measurement and energy beam selection, new beam measurement and beam selection criteria, training process, signaling flow and the like need to be designed, so that the trained energy beam can achieve better energy supply effect.
Furthermore, the uplink of the terminal equipment based on radio frequency energy collection also has the problem of communication coverage due to the limitation of energy storage capacity and energy conversion efficiency. In order to increase the coverage distance, the receiving end can also use a beamforming technology to obtain beamforming gain, so as to increase communication coverage. However, there are problems in that the apparatus for providing the downlink energy beam is the same apparatus as the apparatus for providing the uplink communication reception beam, and since the beam quality evaluation criteria of the energy beam and the communication beam are different, the conventional beam consistency (Beam correspondence) is not applicable in the architecture based on the downlink energy beam power supply and the uplink beam reception, and thus a new beam training/processing method needs to be designed.
Aiming at the problem of combined training/processing of the energy forming beam and the communication forming beam, the embodiment of the application provides a method for carrying out combined beam training/processing of the energy forming beam and the communication forming beam based on the same reference signal, and a corresponding signaling flow, configuration parameters and the like, so that the obtained energy forming beam can provide a radio frequency energy supply effect with stronger power, and meanwhile, the obtained communication forming beam can have better beam forming gain.
The embodiment of the application can be applied to LTE systems, 5G NR systems and NR evolution systems, such as 6G systems, and a plurality of wireless communication systems which are applicable to energy beam forming and the like, such as IEEE 802.11, wireless optical communication, passive Internet of things, back scattering communication and the like.
The beam processing method, the device, the communication equipment and the readable storage medium provided by the embodiment of the application are described in detail below through some embodiments and application scenes thereof with reference to the accompanying drawings.
Referring to fig. 2, fig. 2 is a flowchart of a beam processing method provided in an embodiment of the present application, where the method is performed by a communication device, and as shown in fig. 2, the method includes the following steps:
step 21: the communication device obtains a first measured value and a second measured value of the first signal;
Step 22: the communication device determines parameters of the first beam according to the first measured value and determines parameters of the second beam according to the second measured value; the first beam is a beam which is sent by the first device to the second device and is used for providing energy for the second device; the second beam is a beam of a first device in data communication with a second device. I.e. the second beam is the receive/transmit beam of the first device for data communication between the second device and the first device.
In this embodiment, the communication device may be selected as the first device or the third device. The first device may be selected from but not limited to: access network equipment such as a base station, terminal equipment such as UE, special radio frequency energy supply equipment, relay equipment and the like. The second device may be selected from but not limited to: backscatter communication devices, radio frequency energy based terminal devices, passive internet of things devices, and the like. The third device is a third party device different from the first device and the second device, such as a third party network node, a third party network device, or the like, having a configuration or scheduling function.
The first beam may be referred to herein as an energy-shaping beam, which is a beam that provides radio frequency energy to the second device. The second beam may be referred to as a communication-forming beam and may be a transmit beam or a receive beam between the second device and the first device.
Optionally, the first signal may include, but is not limited to, at least one of:
a Sounding reference signal (Sounding REFERENCE SIGNAL, SRS);
A synchronization signal block (Synchronization Signal Block, SSB);
a primary bypass synchronization signal (PRIMARY SIDELINK Synchronization Signal, PSSS) and/or a secondary bypass synchronization signal (Secondary Sidelink Synchronization Signal, SSSS);
Channel state Information reference signal (CHANNEL STATE Information REFERENCE SIGNAL, CSI-RS);
phase-tracking reference signal (Phase-TRACKING REFERENCE SIGNAL, TRS);
other physical layer signals, such as newly designed physical layer signals.
In some embodiments, for a plurality of first signals corresponding to different first and second beams, the following is satisfied: the time domain resources are different, the frequency domain resources are the same or different, and the time-frequency domain resources of the plurality of first signals belong to the same resource set, and the same resource set comprises the time domain resources and the frequency domain resources. For example, the resource set of the time-frequency domain resource of the first signal may be allocated by the first device or the third device.
Optionally, the first measurement value of the first signal is a measurement value related to signal strength, which may include, but is not limited to, at least one of the following:
A received signal strength Indication (RECEIVED SIGNAL STRENGTH Indication, RSSI) of the first signal;
The difference between the RSSI of the first signal and the target RSSI, which is a configured or predefined value, may be set based on actual requirements.
Optionally, the second measurement value of the first signal is a measurement value related to signal quality, which may include, but is not limited to, at least one of the following:
Reference signal received Power (REFERENCE SIGNAL RECEIVED Power, RSRP) of the first signal;
A difference between an RSRP of the first signal and a target RSRP, the target RSRP being a configured or predefined value;
A signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR) of the first signal;
A difference between an SINR of a first signal and a target SINR, the target SINR being a configured or predefined value;
Signal-to-noise ratio (Signal to Noise Ratio, SNR) of the first signal;
A difference between an SNR of the first signal and a target SNR, the target SNR being a configured or predefined value;
Reference signal received Quality (REFERENCE SIGNAL RECEIVED Quality, RSRQ) of the first signal;
The difference between the RSRQ of the first signal and a target RSRQ, which is a configured or predefined value.
The second measurement may also be a functional combination of at least two of RSRP, SINR, SNR and RSRQ, such as a linear combination, a product, a ratio, etc.
In some embodiments, after determining the parameters of the first beam and the parameters of the second beam, the respective first beam and second beam may be transmitted, thereby providing superior energy supply and communication quality.
According to the beam processing method, the first measured value and the second measured value of the first signal are obtained, the parameter of the first beam is determined according to the first measured value, and the parameter of the second beam is determined according to the second measured value, wherein the first beam is a beam which is sent to the second device by the first device and is used for providing energy for the second device; the second beam is a beam of the first device which performs data communication with the second device, and a better energy forming beam and a better communication forming beam can be obtained at the same time based on the same signal, so that the selected energy forming beam (namely the first beam) can provide a radio frequency energy supply effect with stronger power, and the selected communication forming beam (namely the second beam) can obtain a better beam forming gain. Furthermore, the method can also solve the problem that the traditional beam consistency (Beam correspondence) is not applicable in the architecture based on the downlink energy beam energy supply and the uplink beam reception, and the method of combined training/processing the beams improves the defect of long training time of the traditional step-by-step training, and simultaneously solves the problem of high complexity caused by the measurement of the beam quality and the reporting of the beam.
Optionally, the parameters of the first beam and/or the second beam may include at least one of the following:
the width of the first beam and/or the second beam;
The direction of the first beam and/or the second beam;
the power of the first beam and/or the second beam;
An index of the first beam and/or the second beam;
A precoding matrix indicator (Precoding matrix indicator, PMI) for the first beam and/or the second beam;
A duty cycle of the first beam and/or the second beam;
The number of the transmitting antennas of the first wave beam and/or the second wave beam;
the number of receiving antennas of the first beam and/or the second beam;
An index of a transmit antenna of the first beam and/or the second beam;
index of the receiving antennas of the first beam and/or the second beam.
Optionally, the first signal is a signal sent by the second device to the first device, for example, the first device receives the first signal sent by the second device on a different receive beam (Rx beam), and the acquiring the first measurement value and the second measurement value of the first signal may include:
The communication equipment measures a first measured value and a second measured value of the first signal; for example, the first device may measure first and second measurements of different first signals on different Rx beams.
In some embodiments, the time domain resources are different for multiple first signals on different Rx beams, and the frequency domain resources may be the same or different, but belong to the same set of resources.
In some embodiments, the first signal carries Identification (ID) information of the second device, so as to identify the second device that sends the first signal.
Optionally, the first signal is a signal generated by the second device, and the generating manner of the first signal may include at least one of the following:
autonomously generated by the second device; for example, the second device may perform energy collection according to the second signal sent by the first device, and autonomously generate a corresponding first signal according to the time-frequency resource configuration of the first signal, where the second signal is a radio frequency energy signal, and is only used for energy supply of the second device;
The method comprises the steps of performing back scattering modulation and resource mapping on a second signal according to time-frequency resource configuration of a first signal, wherein the second signal is a radio frequency carrier signal sent to second equipment by first equipment, and the first signal is a back scattering signal of the second signal;
the second signal is obtained after being reflected according to the configured reflection coefficient, namely the second signal is not subjected to any modulation, and the second signal is a radio frequency carrier signal sent to the second device by the first device; for example, the second signal may be SSB, CSI-RS, PSSS, SSSS, TRS or other physical layer signals;
The method comprises the steps of carrying out all 1 back scattering modulation on a second signal, wherein the second signal is a radio frequency carrier signal sent to second equipment by first equipment; the all-1 backscatter modulation is understood to mean that the second signal is backscatter modulated based on the all-1 baseband signal, and at this time the second signal is the first signal; for example, the second signal may be selected from SSB, CSI-RS, PSSS, SSSS, TRS or other physical layer signals, etc.
In the embodiment of the application, in order to ensure the transceiving of the first signal, the second device may be configured with the corresponding parameter of the first signal. A communication device, such as a first device or a third device, may send first configuration information to a second device, the first configuration information being used to configure parameters of a first signal, the parameters of the first signal may include at least one of:
Time domain related information of the first signal, such as transmission of the first signal is periodic, half-periodic, non-periodic, etc.;
frequency domain related information of the first signal, such as bandwidth, frequency band, frequency modulation sequence, etc.;
the Type of the first signal is Type, for example, the first signal is SRS, TRS, or a newly designed physical layer signal, etc.;
A modulation scheme of the first signal;
A sequence generation mode of the first signal;
The power of the first signal;
Reflection coefficient of the first signal.
In the embodiment of the present application, the second device may determine the corresponding transceiving beam according to the configured or indicated TCI state. A communication device, such as a first device or a third device, may configure or indicate the TCI state of the second device. If the second device is provided with a transceiving beam, the first device or the third device may configure or indicate one or more TCI states of the second device.
Alternatively, the present embodiment may configure or indicate the TCI state to the second device by at least one of:
(1) The communication device sending first radio resource control (Radio Resource Control, RRC) configuration information to the second device, the first RRC configuration information being used to configure at least one TCI state of the second device; for example, an information unit containing Quasi Co-Location (QCL) information may be configured directly by higher layer RRC signaling, and inform the second device;
(2) The communication device sends second RRC configuration information and first downlink control information (Downlink Control Information, DCI) to the second device, wherein the second RRC configuration information is used for configuring a group of TCI states of the second device and trigger states corresponding to each TCI state, and the first DCI is used for indicating at least one trigger state and corresponding TCI states for the second device; for example, a group of TCI states and corresponding trigger states may be configured by a higher layer RRC signaling, one trigger state corresponds to one TCI state, and then one trigger state and the corresponding TCI state are indicated by DCI as QCL reference signals of the aperiodic CSI-RS;
(3) The communication device sends third RRC configuration information and a first Media Access Control (MAC) unit (Medium Access Control Control Element, MAC CE) to the second device, wherein the third RRC configuration information is used for configuring a group of TCI states of the second device, and the first MAC CE is used for selecting at least one TCI state from the configured TCI states for the second device to activate; for example, a set of TCI states may be configured by higher layer RRC signaling, each TCI state may determine a corresponding QCL reference, and then select one TCI state from among them for activation by the MAC CE, as the QCL reference of the target reference signal;
(4) The communication device sends fourth RRC configuration information, second MAC CE and second DCI to the second device, wherein the third RRC configuration information is used for configuring a group of TCI states of the second device, the second MAC CE is used for activating the second device by selecting at most 8 TCI states from the configured TCI states, and the second DCI is used for selecting at least one TCI state from the activated TCI states to indicate; for example, a set of TCI states may be configured by higher layer RRC signaling, then a maximum of 8 TCI states are selected by the MAC CE and indicated by DCI selecting at least one TCI state from the active TCI states.
It should be noted that, as for the manner of configuring or indicating the TCI state of the second device, the manner is not limited to the manners in (1) to (4) described above, other combinations based on RRC, DCI, MAC CE, SCI, and/or L1 signaling may be adopted, which is not limited in this embodiment.
In some embodiments, the configuring/indicating subject communication device of (1) to (4) above is a first device, and the TCI state is configured or indicated by the first device to the second device.
In other embodiments, the configuring/indicating body communication device in (1) to (4) above is a third device, and the TCI state is configured or indicated by the third device to the second device.
Example 1
In the first embodiment, as shown in fig. 3, the first device is taken as a base station device, the second device is a user equipment UE that needs radio frequency energy supply, but the UE may autonomously generate a first signal, which illustrates a combined training/processing procedure of a downlink energy forming beam (i.e., a first beam) and an uplink communication receiving forming beam (i.e., a second beam). The embodiment is applicable to a device to be powered, such as a passive or semi-passive UE, which has an autonomously generated carrier, and which may generate a corresponding reference signal according to configuration information. Specific beam joint training/processing procedures may include:
S1: the base station or the third device configures parameters of the first signal of the UE, the parameters including:
(a) Time domain related parameters;
(b) Frequency domain related parameters;
(c) A modulation mode;
(d) A transmission power;
(e) The manner of sequence generation.
S2: the base station transmits a second signal at a different Tx beam;
for example, the second signal is only used for power supply of the UE.
S3: according to the parameters of the configured first signals, the UE generates the first signals and sends a plurality of first signals;
for example, the first signal may be an SRS signal or a newly designed L1 signal, etc.
For example, the time domain resources of the plurality of first signals are different, the frequency domain resources are the same or different, and the time-frequency domain resources of the plurality of first signals belong to the same resource set.
S4: the base station receives the first signal on different Rx beams and measures to obtain a first measured value and a second measured value of the first signal;
For example, the first measurement value is RSSI.
For example, the second measurement includes at least one of: RSRP, SINR, SNR, RSRQ, etc.
S5: the base station determines parameters of the energy forming beam (namely, a first beam) according to the first measured value, and determines parameters of the communication forming beam (namely, a second beam) according to the second measured value;
S6: alternatively, if the second device is provided with a transceiving beam, the first device configures or indicates one or more TCI states of the second device.
Example two
In the second embodiment, as shown in fig. 4, taking the first device as a base station device and taking the second device as a BSC device that needs radio frequency power supply and provides a radio frequency carrier as an example, the joint training/processing procedure of the downlink energy shaping beam (i.e. the first beam) and the uplink communication receiving shaping beam (i.e. the second beam) is described, where the BSC device generates the first signal based on the backscatter signal. The embodiment is suitable for the BSC device which does not have autonomous generation carrier wave and needs other devices to provide radio frequency carrier waves for back scattering transmission, including passive or semi-passive BSC devices. Specific beam joint training/processing procedures may include:
s1: the base station or the third device configures parameters of the first signal of the BSC device, the parameters including:
(a) Time domain related parameters;
(b) Frequency domain related parameters;
(c) A modulation mode;
(d) A transmission power;
(e) The manner of sequence generation.
S2: the base station transmits a second signal at a different Tx beam;
For example, the second signal may be used to power the BSC apparatus while providing the BSC apparatus with a radio frequency carrier.
S3: according to the parameters of the configured first signals, the BSC equipment generates the first signals based on the second signals and sends a plurality of first signals;
for example, the first signal may be an SRS signal or a newly designed L1 signal, etc.
For example, the time domain resources of the plurality of first signals are different, the frequency domain resources are the same or different, and the time-frequency domain resources of the plurality of first signals belong to the same resource set.
For example, the first signal is a backscatter signal of the second signal.
S4: the base station receives the first signal on different Rx beams and measures to obtain a first measured value and a second measured value of the first signal;
For example, the first measurement value is RSSI.
For example, the second measurement includes at least one of: RSRP, SINR, SNR, RSRQ, etc.
S5: the base station determines parameters of the energy forming beam (namely, a first beam) according to the first measured value, and determines parameters of the communication forming beam (namely, a second beam) according to the second measured value;
S6: alternatively, if the second device is provided with a transceiving beam, the first device configures or indicates one or more TCI states of the second device.
Example III
In the third embodiment, as shown in fig. 5, taking the first device as a base station device and the second device as a BSC device that needs radio frequency power supply and provides radio frequency carriers as an example, the joint training/processing procedure of the downlink energy shaping beam (i.e., the first beam) and the uplink communication receiving shaping beam (i.e., the second beam) is described, where the BSC device directly forwards the first signal. The embodiment is suitable for the BSC device which does not have autonomous generation carrier wave and needs other devices to provide radio frequency carrier waves for back scattering transmission, including passive or semi-passive BSC devices. Specific beam joint training/processing procedures may include:
s1: the base station or the third device configures parameters of the first signal of the BSC device, the parameters including: reflection coefficient;
S2: the base station transmits a plurality of first signals at different Tx beams;
for example, part of the power of the first signal is used to power the BSC device, which is itself also the reference signal.
For example, the first signal may be SSB, CSI-RS, TRS, or a newly designed L1 signal, etc.
For example, the time domain resources of the plurality of first signals are different, the frequency domain resources are the same or different, and the time-frequency domain resources of the plurality of first signals belong to the same resource set.
S3: according to the configured reflection coefficient, the BSC equipment directly reflects a plurality of first signals sent by the base station at different Tx beams;
for example, the reflected first signal is likewise a back-scattered signal of the first signal transmitted by the base station, but without any modulation, or with all 1 modulation and resource mapping.
S4: the base station receives the first signal on different Rx beams and measures to obtain a first measured value and a second measured value of the first signal;
For example, the first measurement value is RSSI.
For example, the second measurement includes at least one of: RSRP, SINR, SNR, RSRQ, etc.
S5: the base station determines parameters of the energy forming beam (namely, a first beam) according to the first measured value, and determines parameters of the communication forming beam (namely, a second beam) according to the second measured value;
S6: alternatively, if the second device is provided with a transceiving beam, the first device configures or indicates one or more TCI states of the second device.
It should be noted that, compared to the first to third embodiments, in other embodiments, the first device may be a UE, a Relay device, or a dedicated radio frequency energy supply device, and other steps are substantially similar to those of the first to third embodiments, and are not repeated here. Taking the first device as an example of UE, the device for configuring the time-frequency resource of the first signal may be:
(a) A first device, such as operating in Mode2 (d);
(b) The third device, such as a base station device, may operate in either Mode1 or Mode 2;
Wherein the transmitted and received reference signals supported by the first device include, but are not limited to, at least one of:
PSSS/SSSS；
SL CSI-RS；
SRS。
still further, in the foregoing embodiments, the manner in which the first device configures or indicates the one or more TCI states of the second device may include any of the following:
(a) RRC configuration;
(b) RRC configuration and SCI indication;
(c) RRC configuration and MAC CE activation;
(d) RRC configuration, MAC CE activation, and SCI indication;
(e) SCI indication;
(f) Based on RRC, DCI, MAC CE, SCI or other combinations of L1 signaling.
According to the beam processing method provided by the embodiment of the application, the execution body can be a beam processing device. In the embodiment of the present application, a beam processing device executes a beam processing method as an example, and the beam processing device provided in the embodiment of the present application is described.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a beam processing apparatus according to an embodiment of the present application, where the beam processing apparatus is applied to a communication device, and the communication device may be selected as a first device or a third device. As shown in fig. 6, the beam processing apparatus 60 includes:
An acquisition module 61 for acquiring a first measurement value and a second measurement value of the first signal;
a determining module 62 for determining parameters of a first beam based on the first measurement and determining parameters of a second beam based on the second measurement; wherein the first beam is a beam that is transmitted by a first device to a second device and is used to provide energy for the second device; the second beam is a beam of a first device in data communication with a second device.
Optionally, the first signal is a signal sent by the second device to the first device, and the obtaining module 61 is specifically configured to: and measuring to obtain a first measured value and a second measured value of the first signal.
Optionally, the generating manner of the first signal includes at least one of the following:
Autonomously generated by the second device;
performing back scattering modulation and resource mapping on a second signal according to the time-frequency resource configuration of the first signal;
Reflecting the second signal according to the configured reflection coefficient to obtain;
Carrying out all 1 back scattering modulation on the second signal to obtain;
Wherein the second signal is a radio frequency carrier signal sent by the first device to the second device.
Optionally, the first signal carries identification information of the second device.
Optionally, for a plurality of first signals transmitted on different beams, the following is satisfied: the time domain resources are different, the frequency domain resources are the same or different, and the time-frequency domain resources of the plurality of first signals belong to the same resource set.
Optionally, the first measurement value includes at least one of:
a received signal strength indicator RSSI;
a difference between the RSSI of the first signal and a target RSSI, the target RSSI being a configured or predefined value;
and/or, the second measurement comprises at least one of:
Reference signal received power RSRP;
a difference between an RSRP of the first signal and a target RSRP, the target RSRP being a configured or predefined value;
signal to interference plus noise ratio SINR;
A difference between the SINR of the first signal and a target SINR, wherein the target SINR is a configured or predefined value;
Signal-to-noise ratio SNR;
A difference between an SNR of the first signal and a target SNR, the target SNR being a configured or predefined value;
reference signal received quality RSRQ;
the difference between the RSRQ of the first signal and a target RSRQ, the target RSRQ being a configured or predefined value.
Optionally, the first signal includes at least one of:
Sounding reference signals, SRS;
A synchronization signal block SSB;
a primary bypass synchronization signal PSSS and/or a secondary bypass synchronization signal SSSS;
channel state information reference signal CSI-RS;
The phase tracks the reference signal TRS.
Optionally, the beam processing device 60 further includes:
The first sending module is configured to send first configuration information to the second device, where the first configuration information is used to configure parameters of the first signal, and the parameters of the first signal include at least one of the following:
Time domain related information of the first signal;
frequency domain related information of the first signal;
The type of the first signal;
A modulation scheme of the first signal;
A sequence generation mode of the first signal;
The power of the first signal;
Reflection coefficient of the first signal.
Optionally, the parameters of the first beam and/or the second beam include at least one of:
the width of the first beam and/or the second beam is/are narrow;
the direction of the first beam and/or the second beam;
the power of the first beam and/or the second beam;
an index of the first beam and/or the second beam;
the precoding matrix of the first beam and/or the second beam indicates PMI;
A duty cycle of the first beam and/or the second beam;
The number of the transmitting antennas of the first wave beam and/or the second wave beam;
the number of the receiving antennas of the first wave beam and/or the second wave beam;
An index of a transmit antenna of the first beam and/or the second beam;
an index of a receiving antenna of the first beam and/or the second beam.
Optionally, the beam processing device 60 further includes:
the second sending module is used for executing at least one of the following:
transmitting first RRC configuration information to the second device, wherein the first RRC configuration information is used for configuring at least one transmission configuration indication TCI state of the second device;
Transmitting second RRC configuration information and first DCI to the second device, wherein the second RRC configuration information is used for configuring a group of TCI states of the second device and trigger states corresponding to each TCI state, and the first DCI is used for indicating at least one trigger state and corresponding TCI state for the second device;
Transmitting third RRC configuration information and a first MAC CE to the second device, wherein the third RRC configuration information is used for configuring a group of TCI states of the second device, and the first MAC CE is used for selecting at least one TCI state from the configured TCI states for activating the second device;
and sending fourth RRC configuration information, a second MAC CE and a second DCI to the second device, wherein the third RRC configuration information is used for configuring a group of TCI states of the second device, the second MAC CE is used for activating the second device by selecting at most 8 TCI states from the configured TCI states, and the second DCI is used for selecting at least one TCI state from the activated TCI states to indicate.
The beam processing device 60 provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 2, and achieve the same technical effects, and for avoiding repetition, a detailed description is omitted herein.
Optionally, as shown in fig. 7, the embodiment of the present application further provides a communication device 70, including a processor 71 and a memory 72, where the memory 72 stores a program or an instruction that can be executed on the processor 71, and when the communication device 70 is a terminal, the program or the instruction is executed by the processor 71 to implement each step of the above-mentioned beam processing method embodiment, and the same technical effects can be achieved, so that repetition is avoided and no further description is provided herein.
The embodiment of the application also provides a readable storage medium, on which a program or an instruction is stored, which when executed by a processor, implements each process of the above beam processing method embodiment, and can achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.
Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.
The embodiment of the application further provides a chip, which comprises a processor and a communication interface, wherein the communication interface is coupled with the processor, and the processor is used for running programs or instructions to realize the processes of the beam processing method embodiment, and can achieve the same technical effects, so that repetition is avoided, and the description is omitted here.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.
The embodiments of the present application further provide a computer program/program product stored in a storage medium, where the computer program/program product is executed by at least one processor to implement each process of the above beam processing method embodiment, and achieve the same technical effects, and are not repeated herein.
The embodiment of the application also provides a communication system, which comprises the first device and the second device or comprises the first device, the second device and the third device, wherein the first device or the third device can be used for executing the steps of the beam processing method.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.
Claims (13)
1. A method of beam processing, comprising:
The communication device obtains a first measured value and a second measured value of the first signal;
The communication device determines parameters of a first beam according to the first measured value and determines parameters of a second beam according to the second measured value; wherein the first beam is a beam that is transmitted by a first device to a second device and is used to provide energy for the second device; the second beam is a beam of a first device in data communication with the second device; the communication device is the first device or a third device.
2. The method of claim 1, wherein the first signal is a signal transmitted by the second device to the first device, and wherein obtaining the first and second measurements of the first signal comprises:
the communication device measures a first measurement value and a second measurement value of the first signal.
3. The method of claim 2, wherein the first signal is generated by at least one of:
Autonomously generated by the second device;
performing back scattering modulation and resource mapping on a second signal according to the time-frequency resource configuration of the first signal;
Reflecting the second signal according to the configured reflection coefficient to obtain;
Carrying out all 1 back scattering modulation on the second signal to obtain;
Wherein the second signal is a radio frequency carrier signal sent by the first device to the second device.
4. The method of claim 2, wherein the first signal carries identification information of the second device.
5. The method of claim 1, wherein for a plurality of first signals transmitted on different beams, the following is satisfied:
the time domain resources are different, the frequency domain resources are the same or different, and the time-frequency domain resources of the plurality of first signals belong to the same resource set.
6. The method according to any one of claims 1 to 5, wherein the first measurement comprises at least one of:
a received signal strength indicator RSSI;
a difference between the RSSI of the first signal and a target RSSI, the target RSSI being a configured or predefined value;
and/or the number of the groups of groups,
The second measurement comprises at least one of:
Reference signal received power RSRP;
a difference between an RSRP of the first signal and a target RSRP, the target RSRP being a configured or predefined value;
signal to interference plus noise ratio SINR;
A difference between the SINR of the first signal and a target SINR, wherein the target SINR is a configured or predefined value;
Signal-to-noise ratio SNR;
A difference between an SNR of the first signal and a target SNR, the target SNR being a configured or predefined value;
reference signal received quality RSRQ;
the difference between the RSRQ of the first signal and a target RSRQ, the target RSRQ being a configured or predefined value.
7. The method of any one of claims 1 to 5, wherein the first signal comprises at least one of:
Sounding reference signals, SRS;
A synchronization signal block SSB;
a primary bypass synchronization signal PSSS and/or a secondary bypass synchronization signal SSSS;
channel state information reference signal CSI-RS;
The phase tracks the reference signal TRS.
8. The method according to any one of claims 1 to 5, further comprising:
The communication device sends first configuration information to the second device, wherein the first configuration information is used for configuring parameters of the first signal, and the parameters of the first signal comprise at least one of the following:
time domain related information of the first signal;
frequency domain related information of the first signal;
The type of the first signal;
The modulation mode of the first signal;
a sequence generation mode of the first signal;
the power of the first signal;
the reflection coefficient of the first signal.
9. The method according to any of claims 1 to 5, wherein the parameters of the first beam and/or the second beam comprise at least one of:
the width of the first beam and/or the second beam is/are narrow;
the direction of the first beam and/or the second beam;
the power of the first beam and/or the second beam;
an index of the first beam and/or the second beam;
the precoding matrix of the first beam and/or the second beam indicates PMI;
A duty cycle of the first beam and/or the second beam;
The number of the transmitting antennas of the first wave beam and/or the second wave beam;
the number of the receiving antennas of the first wave beam and/or the second wave beam;
An index of a transmit antenna of the first beam and/or the second beam;
an index of a receiving antenna of the first beam and/or the second beam.
10. The method of claim 1, further comprising at least one of:
the communication device sending first radio resource control, RRC, configuration information to the second device, the first RRC configuration information being used to configure at least one transmission configuration indication, TCI, state of the second device;
the communication device sends second RRC configuration information and first downlink control information DCI to the second device, wherein the second RRC configuration information is used for configuring a group of TCI states of the second device and trigger states corresponding to each TCI state, and the first DCI is used for indicating at least one trigger state and corresponding TCI state for the second device;
The communication device sends third RRC configuration information and a first Media Access Control (MAC) CE to the second device, wherein the third RRC configuration information is used for configuring a group of TCI states of the second device, and the first MAC CE is used for selecting at least one TCI state from the configured TCI states for activating the second device;
The communication device sends fourth RRC configuration information, a second MAC CE and a second DCI to the second device, where the third RRC configuration information is used to configure a set of TCI states of the second device, the second MAC CE is used to select at most 8 TCI states from the configured TCI states for activation for the second device, and the second DCI is used to select at least one TCI state from the activated TCI states for indication.
11. A beam processing apparatus, comprising:
the acquisition module is used for acquiring a first measured value and a second measured value of the first signal;
a determining module, configured to determine a parameter of a first beam according to the first measurement value, and determine a parameter of a second beam according to the second measurement value; wherein the first beam is a beam that is transmitted by a first device to a second device and is used to provide energy for the second device; the second beam is a beam of a first device in data communication with a second device.
12. A communication device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the beam processing method of any one of claims 1 to 10.
13. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the steps of the beam processing method according to any of claims 1 to 10.
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| CN202211371101.0A CN118041406A (en) | 2022-11-03 | 2022-11-03 | Beam processing method, device, communication equipment and readable storage medium |
| PCT/CN2023/126674 WO2024093772A1 (en) | 2022-11-03 | 2023-10-26 | Beam processing method and apparatus, and communication device and readable storage medium |
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| CN202211371101.0A CN118041406A (en) | 2022-11-03 | 2022-11-03 | Beam processing method, device, communication equipment and readable storage medium |
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| CN111818660B (en) * | 2019-08-05 | 2023-04-04 | 维沃移动通信有限公司 | Method for updating beam information, terminal equipment and network equipment |
| CN111277311B (en) * | 2020-02-10 | 2022-03-25 | 电子科技大学 | Active and passive combined beam forming design method for millimeter wave symbiotic communication system |
| CN111355520B (en) * | 2020-03-10 | 2022-03-08 | 电子科技大学 | Design method of intelligent reflection surface assisted terahertz safety communication system |
| CN113099534B (en) * | 2021-03-29 | 2023-10-27 | 西北工业大学 | Resource allocation method for environment backscatter communication system |
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