CN116684894B - Environment scattering communication method, system, equipment and medium based on network node - Google Patents
Environment scattering communication method, system, equipment and medium based on network node Download PDFInfo
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Abstract
The disclosure provides an environment scattering communication method, system, equipment and medium based on a network node, and relates to the technical field of wireless communication. The method is applied to a network node and comprises the following steps: determining a set of repeating beam patterns, the set of repeating beam patterns comprising at least one repeating beam pattern; according to the first data signal characteristics, at least one forwarding beam pattern is adopted to modulate the second data signal onto the first data signal, and the modulated data signal is forwarded to the user terminal, so that the user terminal demodulates the modulated data signal to obtain the first data signal and the second data signal transmitted by the network node.
Description
Technical Field
The present disclosure relates to the field of wireless communications technologies, and in particular, to an environment scattering communication method based on a network node, a user terminal, a communication system, an electronic device, and a computer readable storage medium.
Background
The smart reflective surface (IRS, intelligent Reflecting Surface) or reconfigurable smart surface (RIS, reconfigurable Intelligent Surface) is comprised of a large number of low cost electromagnetic units, and signals can be reflected/transmitted in desired directions by adjusting parameters (e.g., phase) of each unit to control the direction of reflection/transmission of signals incident to the smart surface. Because RIS has low cost, low power consumption, easy deployment etc. characteristics, so is expected to become the candidate technique of the sixth generation mobile communication standard (6th Generation Mobile Networks,6G) wireless communication.
In order to solve the problems of spectrum and energy consumption faced by 6G, symbiotic scattering communication is receiving a great deal of attention because of its reciprocal sharing characteristics in spectrum and energy domains. However, the related art symbiotic transmission communication system based on the RIS has high cost, high power consumption and low efficiency, and certain challenges exist on how to realize the environment scattering communication based on the RIS and other network nodes.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The disclosure provides an environment scattering communication method, system, equipment and medium based on network nodes, which at least overcome the problems of high cost and low efficiency of an symbiotic transmission communication system based on RIS in the related technology to a certain extent.
Other features and advantages of the present disclosure will be apparent from the following detailed description, or may be learned in part by the practice of the disclosure.
According to one aspect of the present disclosure, there is provided a network node-based environmental scattering communication method, applied to a network node, including: determining a set of repeating beam patterns, wherein the set of repeating beam patterns includes at least one repeating beam pattern; modulating a second data signal onto the first data signal by adopting the at least one forwarding beam pattern according to the first data signal characteristic, and forwarding the modulated data signal to a user terminal, so that the user terminal demodulates the modulated data signal to obtain the first data signal and the second data signal transmitted by the network node.
In one embodiment of the present disclosure, the set of forward beam patterns is determined by: and determining an initial repeating beam pattern, and determining the repeating beam pattern set according to the initial repeating beam pattern and preset parameters.
In one embodiment of the present disclosure, the determining the set of repeating beam patterns according to the initial repeating beam pattern and a preset parameter includes: according to the preset parameters, determining an adjustable phase value set of the network node; and respectively superposing phases in the adjustable phase value sets on a network node forwarding beam forming weight matrix corresponding to the initial forwarding beam pattern to obtain a forwarding beam pattern set, wherein the forwarding beam patterns in the forwarding beam pattern set have the same beam forwarding direction.
In one embodiment of the present disclosure, the preset parameter is used to characterize the phase modulation order, and the preset parameter is determined by at least one of: the capability of the network node, and the configuration of the network side equipment.
In one embodiment of the present disclosure, the modulating the second data signal onto the first data signal with the at least one repeating beam pattern according to a first data signal characteristic includes: modulating the second data signal onto the first data signal based on the retransmission beam pattern set and a preset mapping rule, wherein the preset mapping rule is used for representing a corresponding relation between the second data signal and retransmission beam patterns in the retransmission beam pattern set.
In one embodiment of the present disclosure, the first data signal characteristic includes one or more of a cyclic prefix, a frame structure, a symbol period, a symbol position.
In one embodiment of the present disclosure, one symbol period of the second data signal is one or more symbol periods of the first data signal.
In one embodiment of the present disclosure, the second data signal is modulated onto the first data signal in a phase modulated manner, the second data signal remaining symbol synchronized with the first data signal.
In one embodiment of the disclosure, the second data signal includes a third data signal and a fourth data signal, the third data signal being used to determine a demodulation reference for the fourth data signal and to determine a start position of the fourth data signal, the fourth data signal being a data signal that the network node desires to transmit.
In one embodiment of the present disclosure, all of the sets of repeating beam patterns are traversed in a time-division manner using at least one pass in transmitting the third data signal to cause the user terminal to obtain a demodulation reference for the fourth data signal.
In one embodiment of the present disclosure, the method further comprises: and starting a preset number of symbol periods after the third data signal has a specific symbol sequence, and taking the preset number of symbol periods as a starting position of the fourth data signal.
According to another aspect of the present disclosure, there is provided a network node-based environment scattering communication method applied to a user terminal, the method comprising: receiving a data signal forwarded by a network node, wherein the data signal comprises a first data signal and a second data signal, the first data signal is transmitted by network side equipment, and the second data signal is a signal modulated onto the first data signal by the network node; demodulating the data signal to obtain the first data signal transmitted by the network side equipment and the second data signal transmitted by the network node.
In one embodiment of the disclosure, the second data signal includes a third data signal and a fourth data signal, the third data signal being used to determine a demodulation reference of the fourth data signal and to determine a start position of the fourth data signal, the fourth data signal being a data signal that the network node desires to transmit; wherein the method further comprises: and comparing the phase states of adjacent data signals by taking the symbol periods of the second data signals as units, and obtaining the third data signal characteristics when continuous phase changes which show certain characteristics are detected on the adjacent symbol periods and are larger than a preset first threshold value.
In one embodiment of the present disclosure, the method further comprises: determining a starting position of the fourth data signal according to the third data signal; demodulating the fourth data signal with respect to the third data signal.
According to another aspect of the present disclosure, there is provided a network node comprising: a beam pattern determination module for determining a set of repeating beam patterns, wherein the set of repeating beam patterns includes at least one repeating beam pattern; and the data signal modulation module is used for modulating a second data signal to the first data signal by adopting the at least one forwarding beam pattern according to the first data signal characteristic, and forwarding the modulated data signal to a user terminal so that the user terminal demodulates the modulated data signal to obtain the first data signal and the second data signal transmitted by the network node.
According to another aspect of the present disclosure, there is provided a user terminal comprising: the data receiving module is used for receiving data signals forwarded by a network node, wherein the data signals comprise first data signals and second data signals, the first data signals are transmitted by network side equipment, and the second data signals are signals modulated onto the first data signals by the network node; the first demodulation module is configured to demodulate the data signal to obtain the first data signal transmitted by the network side device and the second data signal transmitted by the network node.
According to another aspect of the present disclosure, there is provided a communication system, including a network side device, a network node, and a user terminal, wherein the network node is configured to determine a set of forwarding beam patterns, where the set of forwarding beam patterns includes at least one forwarding beam pattern; modulating a second data signal onto the first data signal using the at least one repeating beam pattern according to a first data signal characteristic and repeating the modulated data signal to the user terminal; the user terminal is configured to receive the data signal forwarded by the network node; demodulating the data signal to obtain a first data signal transmitted by the network side equipment and a second data signal transmitted by the network node.
According to still another aspect of the present disclosure, there is provided an electronic apparatus including: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform the above-described network node based ambient scatter communication method via execution of the executable instructions.
According to yet another aspect of the present disclosure, a computer readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, implements the above described network node based ambient scatter communication method.
According to another aspect of the disclosure, there is provided a computer program product comprising executable instructions stored in a computer readable storage medium, which are read from the computer readable storage medium by a processor of an electronic device, which executable instructions are executed by the processor, causing the electronic device to perform the above-described network node based ambient scatter communication method.
In the embodiment of the disclosure, a forwarding beam pattern set with at least one forwarding beam pattern is determined, at least one forwarding beam pattern is adopted to modulate a second data signal onto a first data signal according to a first data signal characteristic, the modulated data signal is forwarded to a user terminal, after the user terminal demodulates the modulated data signal, the first data signal transmitted by a network side device and the second data signal transmitted by a network node are obtained, the phase modulation characteristic of the network node is utilized, the data signal of the network node or a secondary node can be modulated on a wireless signal of a main system, the transmission performance of the wireless signal of the main system, namely the network side device can be enhanced, the environment scattering communication based on the network node is realized, the cost is reduced, the power consumption is reduced, the deployment is easy, and the network node-side device has the characteristics of high spectrum efficiency and high energy efficiency.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.
Fig. 1 shows a schematic diagram of an exemplary system architecture of a network node-based ambient scatter communication method in an embodiment of the present disclosure.
Fig. 2 illustrates a flowchart of a network node-based environmental scattering communication method applied to a network node in an embodiment of the present disclosure.
Fig. 3 shows a flow chart of a method for obtaining a set of forwarding beam patterns in an embodiment of the present disclosure.
Fig. 4 illustrates a flowchart of another method for acquiring a set of forward beam patterns in an embodiment of the present disclosure.
Fig. 5 is a schematic diagram illustrating a specific example of a network node forwarding a data signal in an embodiment of the disclosure.
Fig. 6 shows a flowchart of a network node-based environmental scattering communication method applied to a user terminal in an embodiment of the present disclosure.
Fig. 7 shows a flowchart of another network node-based environmental scattering communication method applied to a user terminal in an embodiment of the present disclosure.
Fig. 8 illustrates a schematic diagram of a network node in an embodiment of the disclosure.
Fig. 9 shows a schematic structural diagram of a user terminal in an embodiment of the disclosure.
Fig. 10 shows a schematic structural diagram of a communication system in an embodiment of the present disclosure.
Fig. 11 shows a block diagram of an electronic device in an embodiment of the disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor devices and/or microcontroller devices.
Fig. 1 shows a schematic diagram of an exemplary system architecture of a network node-based ambient scatter communication method that may be applied to embodiments of the present disclosure.
As shown in fig. 1, the system architecture 100 may include a network-side device 101, a network node 102, a network 103, and a user terminal 104.
The medium used by the network 103 to provide the communication link between the user terminal 104 and the network node 102, the network node 102 and the network side device 101 may be a wireless network.
Optionally, the wireless network described above uses standard communication techniques and/or protocols. The network is typically the Internet, but may be any network including, but not limited to, a local area network (Local Area Network, LAN), metropolitan area network (Metropolitan Area Network, MAN), wide area network (Wide Area Network, WAN), mobile, wireless network, private network, or any combination of virtual private networks. In some embodiments, data exchanged over a network is represented using techniques and/or formats including HyperText Mark-up Language (HTML), extensible markup Language (Extensible MarkupLanguage, XML), and the like. All or some of the links may also be encrypted using conventional encryption techniques such as secure sockets layer (Secure Socket Layer, SSL), transport layer security (Transport Layer Security, TLS), virtual private network (Virtual Private Network, VPN), internet protocol security (Internet ProtocolSecurity, IPsec), etc. In other embodiments, custom and/or dedicated data communication techniques may also be used in place of or in addition to the data communication techniques described above.
The user terminal 104 may be a variety of electronic devices including, but not limited to, smartphones, tablets, laptop portable computers, desktop computers, wearable devices, augmented reality devices, virtual reality devices, and the like.
Alternatively, the user terminals of the applications installed in different user terminals 104 are the same or user terminals of the same type of application based on different operating systems. The specific form of the user terminal of the application program may also be different based on the different terminal platforms, for example, the application program client may be a mobile phone user terminal, a PC user terminal, etc.
The network node 102 may be an intelligent reflective surface (IRS, intelligent Reflecting Surface), a reconfigurable intelligent surface (RIS, reconfigurable Intelligent Surface), an intelligent repeater or an intelligent relay device, which may be configured to intelligently adjust the wireless propagation environment between the user terminal 104 and the network side device 101 by integrating a large number of low cost reflective/transmissive elements on a plane, thereby significantly improving the performance of the wireless communication network.
The network-side device 101 may be an evolved Node B (eNB), a 5G base station (gNB), or a later version of a base station, a radio network controller (Radio Network Controller, RNC), a Node B (Node B, NB), a base station controller (BaseStation Controller, BSC), a base transceiver station (Base Transceiver Station, BTS), a Home base station (e.g., home evolved NodeB, or Home Node B, HNB), a BaseBand Unit (BBU), a wireless fidelity (Wireless Fidelity, WIFI) Access Point (Access Point, AP), a transmission Point (transmission andreceiver Point, TRP, or transmission Point, TP), or other words in the field, as long as the same technical effect is achieved, the network device is not limited to a specific technical word.
The network side device 101 may be a 4G base station, or a 5G base station, or a higher version base station, or a base station in other communication systems, or referred to as a node B, an evolved node B, or a transmission receiving Point (Transmission Reception Point, TRP), or an Access Point (AP), or a WiFi device, or other words in the field, so long as the same technical effect is achieved, the network side device is not limited to a specific technical word.
For symbiotic scattering communication systems, which include a primary system, which is a communication system comprising active transmitting units, such as base stations in 5G networks, and a secondary system, which uses the spectrum of the primary system and radio frequency signals to achieve passive backscatter communication, sharing the spectrum, energy and infrastructure resources of the primary system. And the transmission of the secondary system provides an additional multipath effect for the main system, so that the performance of the main system is expected to be improved while the secondary system obtains a low-energy-consumption transmission opportunity.
The network node 102, such as RIS, is introduced into symbiotic scattering communication, the network side equipment 101 is used as a main system, and the network node 102 is used as a secondary system, so that the secondary system information can be transmitted instead of a traditional reflection communication unit, and the controllability of the secondary system information on the electromagnetic environment can be used for assisting the transmission of the main system information. However, the related art symbiotic transmission communication system based on the RIS has high cost, high power consumption and low efficiency, and certain challenges exist on how to realize the environment scattering communication based on the RIS and other network nodes.
To solve the above problem, in one embodiment, the network-side device 101 transmits a first data signal to the network node 102 through the network 103; the network node 102 modulates the second data signal onto the first data signal and forwards the modulated data signal to the user terminal 104.
In one embodiment, after receiving the data signal forwarded by the network node 102, the user terminal 104 demodulates the data signal, so as to obtain a first data signal transmitted by the network side device 101 and a second data signal transmitted by the network node 102, thereby implementing environment scattering communication based on the network node.
Those skilled in the art will appreciate that the number of user terminals, networks, network nodes and network side devices in fig. 1 is merely illustrative, and that any number of user terminals, networks, network nodes and network side devices may be provided as desired. The embodiments of the present disclosure are not limited in this regard.
Based on the above, the network node-based environment scattering communication method provided by the present disclosure determines a repeating beam pattern set having at least one repeating beam pattern, modulates a second data signal onto a first data signal by using at least one repeating beam pattern according to a first data signal characteristic, and transmits the modulated data signal to a user terminal, and after demodulating the modulated data signal, the user terminal obtains the first data signal transmitted by a network side device and the second data signal transmitted by the network node.
The present exemplary embodiment will be described in detail below with reference to the accompanying drawings and examples.
First, in an embodiment of the present disclosure, a method for environmental scattering communication based on a network node is provided, where the method may be performed by any electronic device having computing processing capabilities. In some embodiments, the method may be performed by a network node; in other embodiments, the method may be performed by a user terminal; in addition, the interaction between the network node and the user terminal can be realized.
Fig. 2 shows a flowchart of an environmental scattering communication method based on a network node in an embodiment of the disclosure, and as shown in fig. 2, the environmental scattering communication method based on a network node provided in the embodiment of the disclosure is applied to a network node, and includes the following steps:
s202, a forwarding beam pattern set is determined, wherein the forwarding beam pattern set comprises at least one forwarding beam pattern.
The network node may be a reconfigurable intelligent surface device, an intelligent reflecting surface device, a network control relay, a wireless forwarding device with a beam forming function, or other devices capable of achieving the same function, and is not limited to the specific technical terms.
In one embodiment, the foregoing repeating beam pattern refers to the electromagnetic field intensity distribution of the repeating beam in space at a specific beam weight matrix, and is the result of the beam weight matrix.
The repeating beam pattern may be, for example, an electromagnetic wave pattern having a specific reflection pattern or transmission pattern formed by adjusting the electromagnetic element, or an electromagnetic wave pattern having a reflection pattern or transmission pattern directed in a specific direction.
For example, according to the direction of the incident signal and the direction of the reflected signal, the initial repeating beam pattern may be calculated according to the plane wave reflection principle of the reflective array, and then at least one repeating beam pattern in the repeating beam pattern set may be determined according to the initial repeating beam pattern.
It should be noted that the number of the repeating beam patterns in the repeating beam pattern set may be determined according to the actual situation.
Beamforming is a process that the correlation of electromagnetic waves causes the change of space field intensity, so that signals in certain areas are enhanced, signals in other areas are weakened, and beams with signals in certain directions being enhanced can be obtained after specific design. In one embodiment, the network node may generate a desired repeating beam pattern by controlling the beamforming weight matrix to repeat the associated data signal such that the signal is enhanced in a particular direction.
S204, modulating the second data signal to the first data signal by adopting at least one forwarding beam pattern according to the first data signal characteristics, and forwarding the modulated data signal to the user terminal so that the user terminal demodulates the modulated data signal to obtain the first data signal and the second data signal transmitted by the network node.
In one embodiment, the second data signal is modulated onto the first data signal in a phase modulated manner. Namely, in the data signal transmission process, the network side equipment transmits a first data signal, and the first data signal is forwarded to the user terminal through the network node; the network node simultaneously superimposes the second data signal while forwarding the first data signal.
It should be noted that, the network node need not obtain the specific content of the first data signal, and only superimposes the second data signal when forwarding the first data signal, and uses the first data signal as the carrier of the second data signal. The phase superposition operation is an operation on a beamforming weight matrix.
It should be noted that the second data signal and the first data signal need to maintain symbol synchronization, so that the user terminal accurately demodulates the received data signal.
The first data signal may be a data signal transmitted by a network side device, and the second data signal is a data signal transmitted by a network node.
The first data signal characteristic may comprise at least one of: cyclic prefix, frame structure, symbol period, symbol position, etc. The cyclic prefix is formed by copying signals at the tail of an orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbol to the head, so that the orthogonality of subcarriers can be ensured; the frame is composed of parts performing different functions to facilitate signal transmission; the symbol period is the duration of one OFDM symbol; the symbol positions are used to determine the positions of the symbols in the data signal.
It should be noted that one symbol period of the second data signal is one or more symbol periods of the first data signal. For example, one symbol period of the second data signal is twice the symbol period of the second data signal.
In the embodiment of the disclosure, a forwarding beam pattern set with at least one forwarding beam pattern is determined, at least one forwarding beam pattern is adopted to modulate a second data signal onto a first data signal according to a first data signal characteristic, the modulated data signal is forwarded to a user terminal, after the user terminal demodulates the modulated data signal, the first data signal transmitted by a network side device and the second data signal transmitted by a network node are obtained, the phase modulation characteristic of the network node is utilized, the data signal of the network node or a secondary node can be modulated on a wireless signal of a main system, the transmission performance of the wireless signal of the main system, namely the network side device can be enhanced, the environment scattering communication based on the network node is realized, the cost is reduced, the power consumption is reduced, the deployment is easy, and the network node-side device has the characteristics of high spectrum efficiency and high energy efficiency.
Fig. 3 shows a flow chart of a method for obtaining a set of forwarding beam patterns in an embodiment of the present disclosure. As shown in fig. 3, in one embodiment, the set of forward beam patterns is determined by: s302, determining an initial forwarding beam pattern, and determining a forwarding beam pattern set according to the initial forwarding beam pattern and preset parameters.
In one embodiment, the initial repeating beam pattern may be calculated according to the incident signal direction and the reflected signal direction and the plane wave reflection principle of the reflective array.
The above-mentioned preset parameters refer to the phase modulation order, and the preset parameters may be determined according to practical situations. The above-mentioned preset parameters may be determined by: the capability of the network node, the configuration of the network side equipment.
The capability of the network node characterizes the phase modulation order that the network node can support; the configuration of the network side device is used for representing the phase modulation order of the network side device configuration network node.
It should be noted that, when the network side device configures the phase modulation order for the network node, the network node determines the preset parameter according to the configuration of the network side device. For example, the phase modulation order that the network node can support is 4, and the network side device configures the phase modulation order of the network node to be 2, where the preset parameter may be 2.
In one embodiment, the network node may determine a set of repeating beam patterns based on the first parameter and the initial repeating beam pattern while modulating the second data signal onto the first data signal in a phase modulated manner using at least one repeating beam pattern of the set of repeating beam patterns based on the first data signal characteristics.
In the embodiment of the disclosure, a forwarding beam pattern set is determined according to the phase modulation order of the pre-configured network node and the initial forwarding beam pattern, so that the network node is introduced into the symbiotic scattering communication system, the environment scattering communication based on the network node is realized, and the frequency spectrum efficiency and the energy efficiency are improved.
Fig. 4 illustrates a flowchart of another method for acquiring a set of forward beam patterns in an embodiment of the present disclosure. As shown in fig. 4, in one embodiment, the determining the set of forwarding beam patterns according to the initial forwarding beam pattern and the preset parameters in S302 includes:
s3022, determining an adjustable phase value set of the network node according to the preset parameters.
S3024, respectively superposing phases in the adjustable phase value sets on the network node forwarding beam forming weight matrix corresponding to the initial forwarding beam pattern to obtain a forwarding beam pattern set, wherein the forwarding beam patterns in the forwarding beam pattern set have the same beam forwarding direction.
Illustratively, each forwarding unit of the network node may perform a 2-bit phase modulation order, and may generate 4 phase changes, at which time the adjustable phase value set ψ, ψ= {0, pi/2, pi, 3 pi/2 } of the network node. When each forwarding unit of the network node can perform a 3-bit phase modulation order, 8 phase changes can be generated, at which time the set of adjustable phase values ψ= {0, pi/4, pi/2, 3 pi/4, pi, 5 pi/4, 3 pi/2, 7 pi/4 } of the network node.
For the initial repeating beam pattern, it is assumed that the repeating beam forming weight matrix composed of the reflection phases of the respective repeating units of the network node at this time is [ theta ] i,j ]Wherein θ i,j The dimension of the forwarding beamforming weight matrix is omitted for simplicity for the forwarding beamforming weights of the forwarding units of the ith row and jth column. At least one repeating beam pattern may be formed by adding individual phase values in the set of adjustable phase values to all repeating beam forming weights.
For example, in the forward beamforming weight matrix [ theta ] i,j ]Adding the phase values of the adjustable phase value set phi = {0, pi/2, pi, 3 pi/2 } to form 4 transfer beam patterns, thereby obtaining a transfer beam pattern set phi = { [ theta } i,j ]，[θ i,j +π/2]，[θ i,j +π]，[θ i,j +3π/2]}. Each of the repeating beam patterns in the set of repeating beam patterns has the same beam repeating direction, but there is a phase difference between any two repeating beam patterns.
In one embodiment, modulating the second data signal onto the first data signal according to the first data signal characteristic in S204 with at least one repeating beam pattern includes: modulating the second data signal onto the first data signal based on the repeating beam pattern set and a preset mapping rule, wherein the preset mapping rule is used for representing a corresponding relation between the second data signal and repeating beam patterns in the repeating beam pattern set.
In the case that each forwarding unit of the network node may perform 2-bit phase modulation order, the bit information set a of the second data signal that the network node may transmit includes 4 types, a= {00, 01, 11, 10}, and the element in the bit information set a may be configured to correspond to the forwarding beam pattern in the forwarding beam pattern set one to construct the preset mapping relationship, where the preset mapping relationship may be preconfigured in the network node.
And the network node determines a forwarding beam pattern corresponding to the bit information based on the preset mapping relation according to the bit information of the second data signal to be transmitted, so as to modulate the second data signal to the first data signal.
In the embodiment of the disclosure, the corresponding relation between the second data signal and the forwarding beam patterns in the forwarding beam pattern set is established by constructing the preset mapping rule, so that the forwarding beam pattern is rapidly and conveniently determined, and the forwarding efficiency of the network node is improved.
In one embodiment, the second data signal comprises a third data signal and a fourth data signal, the third data signal being used for determining a demodulation reference of the fourth data signal and for determining a starting position of the fourth data signal, the fourth data signal being a data signal that the network node desires to transmit.
The third data signal refers to a packet header signal, and is further used for detecting and determining that the second data signal transmission exists currently by the user terminal.
It should be noted that, when transmitting the third data signal, all of the repeating beam patterns in the repeating beam pattern set are traversed at least once in a time-division manner, so that the user terminal obtains the demodulation reference of the fourth data signal.
All the forwarding beam patterns in the forwarding beam pattern set can be traversed for 2-3 times, so that the situation that decryption cannot be performed due to missed transmission is effectively prevented.
In one embodiment, the method further comprises: when the third data signal has a specific symbol sequence, a preset number of symbol periods are started to serve as a starting position of the fourth data signal.
The specific symbol sequence may be formed according to a preset rule for at least one of the sets of repeating beam patterns.
The number of repeating beam patterns in a particular symbol sequence is less than the total number of repeating beam patterns. For example, the set of repeating beam patterns includes 4 repeating beam patterns, and the number of specific symbol sequences may be 1, 2, or 3.
For example, the above-mentioned preset number may be preconfigured in the network node, and used to characterize the number of times that a specific symbol sequence continuously appears.
For example, when the set of repeating beam patterns includes 3 or more repeating beam patterns, one or two repeating beam patterns may be selected as a specific sequence, for example, two repeating beam patterns are selected to consecutively appear in a preset order by a preset number.
In one possible implementation, as shown in fig. 5, the set of forward beam patterns Φ= { Θ 1 ，Θ 2 -wherein the beam pattern Θ is forwarded 1 The introduced phase change is theta 1 The forward beam pattern Θ 2 The introduced phase change is theta 2 . And traversing two repeating wave beam patterns in the repeating wave beam pattern set twice in the first four symbol periods of the second data signal transmission to serve as demodulation references of the fourth data signal, so that the receiving performance is improved.
Then, 3 repeating beam patterns Θ are transmitted 1 The first symbol period is the starting position of the fourth data signal, i.e. the specific sequence representing the start of the fourth data signal is the repeating beam pattern.
In the embodiment of the disclosure, the third data signal is transmitted according to a preset rule, so that the demodulation reference of the fourth data signal, the starting position of the fourth data signal and the like can be determined through the third data signal, and demodulation is facilitated.
Fig. 6 shows a flowchart of a network node-based environmental scattering communication method applied to a user terminal in an embodiment of the present disclosure. As shown in fig. 6, the network node-based environment scattering communication method provided by the embodiment of the present disclosure is applied to a user terminal, and includes the following steps:
s602, receiving a data signal forwarded by a network node, wherein the data signal comprises a first data signal and a second data signal, the first data signal is transmitted by network side equipment, and the second data signal is a signal modulated onto the first data signal by the network node.
S604, demodulating the data signals to obtain a first data signal transmitted by the network side equipment and a second data signal transmitted by the network node.
In one embodiment, after receiving the data signal or the channel information forwarded by the network node, the ue demodulates the first data signal by using a first demodulation manner, where the first demodulation manner may be maximum likelihood detection, and the disclosure is not limited specifically.
The user terminal may perform estimation on the data signal or the channel information by using the first data signal obtained by demodulation, for example, least square estimation, so as to improve the channel estimation accuracy, and the channel estimation mode is not specifically limited in this disclosure.
In the embodiment of the disclosure, the received data signals forwarded by the network equipment node are demodulated, so that the first data signals transmitted by the network side equipment and the second data signals transmitted by the network node are obtained, the environment scattering communication based on the network node is realized, the cost is reduced, the power consumption is reduced, and the frequency spectrum efficiency and the energy efficiency are improved.
It should be noted that the second data signal includes a third data signal and a fourth data signal, where the third data signal is used to determine a demodulation reference of the fourth data signal and determine a start position of the fourth data signal, and the fourth data signal is a data signal that the network node desires to transmit.
Fig. 7 shows a flowchart of another network node-based environmental scattering communication method applied to a user terminal in an embodiment of the present disclosure. As shown in fig. 7, in an embodiment, the network node-based environment scattering communication method provided in the embodiment of the present disclosure further includes: s702, comparing the phase states of the adjacent data signals by taking the symbol periods of the second data signals as units, and obtaining the third data signal characteristics when continuous phase changes presenting certain characteristics are detected on the adjacent symbol periods and are larger than a preset first threshold value.
In one embodiment, the detected phase difference value in the adjacent periods exceeds a preset first threshold, where the preset first threshold is a phase average value of n symbol periods before the current symbol period, and n is a positive integer, which may be determined according to practical situations.
For example, the preset first threshold may be configured to be 30 °, for example, in 5 consecutive symbol periods, the phase difference of adjacent channels is 0, 45 °,90 °,45 °,90 °, and the third data signal characteristic is obtained to be 45 ° to represent the first symbol characteristic, and 90 ° to represent the second symbol characteristic.
With continued reference to fig. 7, in one embodiment, the method further comprises: s704, determining the starting position of a fourth data signal according to the third data signal; the fourth data signal is demodulated with reference to the third data signal.
In one embodiment, the set of repeating beam patterns may be derived from the repeating beam pattern preceding the particular symbol sequence when a predetermined number of symbol periods of the particular symbol sequence of the third data signal is detected.
Starting a preset number of symbol periods after a specific symbol sequence, as a starting position of a fourth data signal, comparing each symbol of the fourth data signal with each retransmission beam pattern in the retransmission beam pattern set, determining a retransmission beam pattern corresponding to each symbol of the fourth data signal, and determining bit information corresponding to the retransmission beam pattern according to a preset mapping rule, so as to determine bit information transmitted by a network node.
In the embodiment of the disclosure, by comparing the phase states of adjacent data signals with the symbol period of the second data signal as a unit, when a continuous phase change presenting a certain characteristic is detected on the adjacent symbol period and is larger than a preset first threshold value, a third data signal characteristic is obtained, the starting position of the fourth data signal is determined according to the third data signal, and the fourth data signal is demodulated with the third data signal as a reference, so that the demodulation precision of the third data signal and the fourth data signal is improved, and the environment scattering communication based on the network node is realized.
Based on the same inventive concept, the embodiments of the present disclosure also provide a network node, a user terminal and a communication system, as described in the following embodiments. Since the principle of solving the problem by the network node, the user terminal and the communication system embodiments is similar to that of the above method embodiments, the implementation of the network node, the user terminal and the communication system embodiments may refer to the implementation of the above method embodiments, and the repetition is omitted.
Fig. 8 shows a schematic diagram of a network node in an embodiment of the disclosure, as shown in fig. 8, where the network node includes: the beam pattern determination module 801 and the data signal modulation module 802.
Wherein, the beam pattern determining module 801 is configured to determine a set of repeating beam patterns, where the set of repeating beam patterns includes at least one repeating beam pattern;
the data signal modulation module 802 is configured to modulate the second data signal onto the first data signal by using at least one repeating beam pattern according to the first data signal characteristic, and repeat the modulated data signal to the user terminal, so that the user terminal demodulates the modulated data signal to obtain the first data signal and the second data signal transmitted by the network node.
In one embodiment, the beam pattern determination module 801 is configured to determine the set of forwarding beam patterns by: determining an initial repeating beam pattern, and determining a repeating beam pattern set according to the initial repeating beam pattern and preset parameters.
In one embodiment, the beam pattern determining module 801 is configured to determine an adjustable phase value set of the network node according to a preset parameter; and respectively superposing phases in the adjustable phase value sets on the network node forwarding beam forming weight matrix corresponding to the initial forwarding beam pattern to obtain a forwarding beam pattern set, wherein the forwarding beam patterns in the forwarding beam pattern set have the same beam forwarding direction.
It should be noted that, the preset parameter is used for characterizing the phase modulation order, and the preset parameter is at least determined by one of the following: the capability of the network node, the configuration of the network side equipment.
In one embodiment, the data signal modulation module 802 is configured to modulate the second data signal onto the first data signal based on the set of repeating beam patterns and a preset mapping rule, where the preset mapping rule is configured to characterize a correspondence between the second data signal and repeating beam patterns in the set of repeating beam patterns.
The first data signal characteristic includes one or more of cyclic prefix, frame structure, symbol period, and symbol position.
It should be noted that one symbol period of the second data signal is one or more symbol periods of the first data signal.
It should be noted that the second data signal is modulated onto the first data signal in a phase modulation manner, and the second data signal maintains symbol synchronization with the first data signal.
It should be noted that the second data signal includes a third data signal and a fourth data signal, where the third data signal is used to determine a demodulation reference of the fourth data signal and determine a start position of the fourth data signal, and the fourth data signal is a data signal that the network node desires to transmit.
In one embodiment, the data signal modulation module 802 is configured to traverse all of the set of repeating beam patterns in a time-division manner using at least one pass when transmitting the third data signal, so that the user terminal obtains a demodulation reference of the fourth data signal.
It should be noted that, when the third data signal has a specific symbol sequence, a preset number of symbol periods begin, which is the starting position of the fourth data signal.
Fig. 9 shows a schematic diagram of a user terminal in an embodiment of the present disclosure, as shown in fig. 9, in an embodiment, a user terminal provided in an embodiment of the present disclosure includes:
the data receiving module 901 is configured to receive a data signal forwarded by a network node, where the data signal includes a first data signal and a second data signal, the first data signal is transmitted by a network side device, and the second data signal is a signal modulated onto the first data signal by the network node;
the first demodulation module 902 is configured to demodulate a data signal to obtain a first data signal transmitted by a network side device and a second data signal transmitted by a network node.
It should be noted that the second data signal includes a third data signal and a fourth data signal, where the third data signal is used to determine a demodulation reference of the fourth data signal and determine a start position of the fourth data signal, and the fourth data signal is a data signal that the network node desires to transmit.
In one embodiment, referring to fig. 9, the user terminal further includes a second data demodulation module 903, where the second data demodulation module 903 is configured to compare phase states of adjacent data signals in units of symbol periods of the second data signal, and obtain a third data signal feature when a continuous phase change that shows a certain feature is detected on the adjacent symbol periods and the continuous phase change is greater than a preset first threshold; determining a starting position of a fourth data signal according to the third data signal; the fourth data signal is demodulated with reference to the third data signal.
Fig. 10 shows a schematic diagram of a communication system in an embodiment of the disclosure. As shown in fig. 10, in one embodiment, a communication system provided in an embodiment of the present disclosure includes a network side device 101, a network node 102, and a user terminal 104, where,
a network node 102 for determining a set of repeating beam patterns, wherein the set of repeating beam patterns comprises at least one repeating beam pattern; modulating the second data signal onto the first data signal by adopting at least one repeating beam pattern according to the first data signal characteristics, and repeating the modulated data signal to the user terminal;
a user terminal 104, configured to receive a data signal forwarded by the network node 102; the data signal is demodulated to obtain a first data signal transmitted by the network side device 101 and a second data signal transmitted by the network node 102.
Those skilled in the art will appreciate that the various aspects of the present disclosure may be implemented as a system, method, or program product. Accordingly, various aspects of the disclosure may be embodied in the following forms, namely: an entirely hardware embodiment, an entirely software embodiment (including firmware, micro-code, etc.) or an embodiment combining hardware and software aspects may be referred to herein as a "circuit," module "or" system.
An electronic device 1100 according to such an embodiment of the present disclosure is described below with reference to fig. 11. The electronic device 1100 shown in fig. 11 is merely an example and should not be construed as limiting the functionality and scope of use of the disclosed embodiments.
As shown in fig. 11, the electronic device 1100 is embodied in the form of a general purpose computing device. Components of electronic device 1100 may include, but are not limited to: the at least one processing unit 1110, the at least one memory unit 1120, a bus 1130 connecting the different system components, including the memory unit 1120 and the processing unit 1110.
Wherein the storage unit stores program code that is executable by the processing unit 1110 such that the processing unit 1110 performs steps according to various exemplary embodiments of the present disclosure described in the above-described "exemplary methods" section of the present specification.
By way of example, the processing unit 1110 may perform the following steps of the method embodiment as in fig. 2: determining a set of repeating beam patterns, wherein the set of repeating beam patterns includes at least one repeating beam pattern; modulating the second data signal onto the first data signal by adopting at least one forwarding beam pattern according to the first data signal characteristics, and forwarding the modulated data signal to the user terminal so that the user terminal demodulates the modulated data signal to obtain the first data signal and the second data signal transmitted by the network node.
By way of example, the processing unit 1110 may perform the following steps of the method embodiment as in fig. 6: receiving a data signal forwarded by a network node, wherein the data signal comprises a first data signal and a second data signal, the first data signal is transmitted by network side equipment, and the second data signal is a signal modulated onto the first data signal by the network node; demodulating the data signal to obtain a first data signal transmitted by the network side equipment and a second data signal transmitted by the network node.
The storage unit 1120 may include a readable medium in the form of a volatile storage unit, such as a Random Access Memory (RAM) 11201 and/or a cache memory 11202, and may further include a Read Only Memory (ROM) 11203.
The storage unit 1120 may also include a program/utility 11204 having a set (at least one) of program modules 11205, such program modules 11205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
The bus 1130 may be a local bus representing one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a bus using any of a variety of bus architectures.
The electronic device 1100 may also communicate with one or more external devices 1140 (e.g., keyboard, pointing device, bluetooth device, etc.), one or more devices that enable a user to interact with the electronic device 1100, and/or any devices (e.g., routers, modems, etc.) that enable the electronic device 1100 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 1150. Also, electronic device 1100 can communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet, through network adapter 1160. As shown, network adapter 1160 communicates with other modules of electronic device 1100 via bus 1130. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with electronic device 1100, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, including several instructions to cause a computing device (may be a personal computer, a server, a terminal device, or a network device, etc.) to perform the method according to the embodiments of the present disclosure.
In an exemplary embodiment of the present disclosure, a computer-readable storage medium, which may be a readable signal medium or a readable storage medium, is also provided. The computer readable storage medium has stored thereon a program product capable of implementing the above-described method of the present disclosure. In some possible implementations, various aspects of the disclosure may also be implemented in the form of a program product comprising program code for causing a user terminal to carry out the steps according to the various exemplary embodiments of the disclosure as described in the "exemplary methods" section of this specification, when the program product is run on the user terminal.
More specific examples of the computer readable storage medium in the present disclosure may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
In this disclosure, a computer readable storage medium may include a data signal propagated in baseband or as part of a carrier wave, with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Alternatively, the program code embodied on a computer readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
In particular implementations, the program code for carrying out operations of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).
It should be noted that although in the above detailed description several modules or units of a device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit in accordance with embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.
Furthermore, although the steps of the methods in the present disclosure are depicted in a particular order in the drawings, this does not require or imply that the steps must be performed in that particular order or that all illustrated steps be performed in order to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform, etc.
From the description of the above embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, including several instructions to cause a computing device (may be a personal computer, a server, a mobile terminal, or a network device, etc.) to perform the method according to the embodiments of the present disclosure.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (17)
1. An environment scattering communication method based on a network node, which is applied to the network node and comprises the following steps:
determining a set of repeating beam patterns, wherein the set of repeating beam patterns includes at least one repeating beam pattern;
modulating a second data signal onto the first data signal by adopting the at least one forwarding beam pattern according to the first data signal characteristic, and forwarding the modulated data signal to a user terminal, so that the user terminal demodulates the modulated data signal to obtain the first data signal and a second data signal transmitted by the network node, wherein the first data signal is transmitted by network side equipment;
Wherein the set of repeating beam patterns is determined by:
according to preset parameters, determining an adjustable phase value set of the network node;
and respectively superposing phases in the adjustable phase value sets on a network node forwarding beam forming weight matrix corresponding to the initial forwarding beam pattern to obtain a forwarding beam pattern set, wherein the forwarding beam patterns in the forwarding beam pattern set have the same beam forwarding direction.
2. The network node based ambient scatter communication method according to claim 1, wherein the preset parameters are used for characterizing the phase modulation order, the preset parameters being determined by at least one of the following: the capacity of the network node and the configuration of the network side equipment.
3. The network node-based ambient scatter communication method according to claim 1, wherein said modulating a second data signal onto said first data signal with said at least one repeating beam pattern according to a first data signal characteristic comprises:
modulating the second data signal onto the first data signal based on the retransmission beam pattern set and a preset mapping rule, wherein the preset mapping rule is used for representing a corresponding relation between the second data signal and retransmission beam patterns in the retransmission beam pattern set.
4. The network node-based ambient scatter communication method of claim 1, wherein the first data signal characteristic comprises one or more of a cyclic prefix, a frame structure, a symbol period, a symbol position.
5. The network node based ambient scatter communication method according to claim 4, wherein one symbol period of the second data signal is one or more symbol periods of the first data signal.
6. The network node based ambient scatter communication method according to claim 4, wherein the second data signal is modulated onto the first data signal in a phase modulated manner, the second data signal being symbol synchronized with the first data signal.
7. The network node based ambient scatter communication method according to claim 1, wherein the second data signal comprises a third data signal and a fourth data signal, the third data signal being used for determining a demodulation reference of the fourth data signal and for determining a start position of the fourth data signal, the fourth data signal being a data signal that the network node desires to transmit.
8. The network node based ambient scatter communication method according to claim 7, wherein all of the set of repeating beam patterns are traversed in a time division manner using at least one pass when transmitting the third data signal for the user terminal to obtain a demodulation reference for the fourth data signal.
9. The network node-based environmental scattering communication method of claim 7, further comprising:
and starting a preset number of symbol periods after the third data signal has a specific symbol sequence, and taking the preset number of symbol periods as a starting position of the fourth data signal.
10. An environmental scattering communication method based on a network node, which is applied to a user terminal, the method comprising:
receiving a modulated data signal forwarded by a network node, wherein the modulated data signal comprises a first data signal and a second data signal, the first data signal is transmitted by network side equipment, the second data signal is transmitted by the network node, the modulated data signal is obtained by modulating the second data signal onto the first data signal by the network node according to the characteristics of the first data signal by adopting at least one forwarding beam pattern in a forwarding beam pattern set, the forwarding beam pattern set determines an adjustable phase value set of the network node according to preset parameters, and the phases in the adjustable phase value set are respectively overlapped on a network node forwarding beam forming weight matrix corresponding to an initial forwarding beam pattern;
Demodulating the modulated data signal to obtain the first data signal transmitted by the network side device and the second data signal transmitted by the network node.
11. The network node-based environmental scattering communication method of claim 10, wherein the second data signal comprises a third data signal and a fourth data signal, the third data signal being used to determine a demodulation reference for the fourth data signal and to determine a start position of the fourth data signal, the fourth data signal being a data signal that the network node desires to transmit;
wherein the method further comprises:
and comparing the phase states of adjacent data signals by taking the symbol periods of the second data signals as units, and obtaining the third data signal characteristics when continuous phase changes which show certain characteristics are detected on the adjacent symbol periods and are larger than a preset first threshold value.
12. The network node-based environmental scattering communication method of claim 11, further comprising:
determining a starting position of the fourth data signal according to the third data signal;
Demodulating the fourth data signal with respect to the third data signal.
13. A network node, comprising:
a beam pattern determination module for determining a set of repeating beam patterns, wherein the set of repeating beam patterns includes at least one repeating beam pattern;
the data signal modulation module is used for modulating a second data signal onto the first data signal by adopting the at least one forwarding beam pattern according to the first data signal characteristic, and forwarding the modulated data signal to a user terminal so that the user terminal demodulates the modulated data signal to obtain the first data signal and a second data signal transmitted by the network node, wherein the first data signal is transmitted by network side equipment;
the beam pattern determining module is used for determining an adjustable phase value set of the network node according to preset parameters; and respectively superposing phases in the adjustable phase value sets on a network node forwarding beam forming weight matrix corresponding to the initial forwarding beam pattern to obtain a forwarding beam pattern set, wherein the forwarding beam patterns in the forwarding beam pattern set have the same beam forwarding direction.
14. A user terminal, comprising:
the data receiving module is used for receiving modulated data signals forwarded by a network node, the modulated data signals comprise a first data signal and a second data signal, the first data signal is transmitted by network side equipment, the second data signal is transmitted by the network node, the data signal is obtained by modulating the second data signal onto the first data signal by the network node according to the first data signal characteristic by adopting at least one forwarding beam pattern in a forwarding beam pattern set, the forwarding beam pattern set is obtained by determining an adjustable phase value set of the network node according to preset parameters and respectively superposing phases in the adjustable phase value set on a network node forwarding beam forming weight matrix corresponding to the initial forwarding beam pattern;
the first demodulation module is configured to demodulate the modulated data signal to obtain the first data signal transmitted by the network side device and the second data signal transmitted by the network node.
15. A communication system is characterized by comprising network side equipment, a network node and a user terminal, wherein,
The network node is configured to determine a set of forward beam patterns, where the set of forward beam patterns includes at least one forward beam pattern; modulating a second data signal onto the first data signal by adopting the at least one forwarding beam pattern according to a first data signal characteristic, and forwarding the modulated data signal to the user terminal, wherein the first data signal is transmitted by the network side equipment; the network node is used for determining an adjustable phase value set of the network node according to preset parameters; respectively superposing phases in the adjustable phase value sets on a network node forwarding beam forming weight matrix corresponding to the initial forwarding beam pattern to obtain a forwarding beam pattern set, wherein the forwarding beam patterns in the forwarding beam pattern set have the same beam forwarding direction;
the user terminal is configured to receive the modulated data signal forwarded by the network node; demodulating the modulated data signal to obtain a first data signal transmitted by the network side equipment and a second data signal transmitted by the network node.
16. An electronic device, comprising:
A processor; and
a memory for storing executable instructions of the processor;
wherein the processor is configured to perform the network node based ambient scatter communication method of any of claims 1-9 or to perform the network node based ambient scatter communication method of any of claims 10-12 via execution of the executable instructions.
17. A computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the network node based ambient scatter communication method of any of claims 1-9 or the network node based ambient scatter communication method of any of claims 10-12.
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