A communication method and a communication device

Abstract

The application provides a communication method and a communication device. The method comprises the following steps: a first node receives a plurality of energy signals from a second node, the plurality of energy signals comprises a first energy signal and a second energy signal, a frequency interval between a center frequency point of the first energy signal and a center frequency point of the second energy signal is greater than or equal to 100 kHz, and a bandwidth occupied by the first energy signal is C Hz; C is a value greater than 0; the plurality of energy signals are used to charge the first node; and the first node sends a communication signal to the second node, wherein a center frequency point of the communication signal is located at a frequency position of the center frequency point of the first energy signal plus N times C / 2; N is an even number. The charging efficiency of the first node can be effectively improved by the method.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and in particular to a communication method and a communication device. Background Technology

[0002] In the field of radio frequency identification (RFID), passive tags are widely used in various scenarios such as inventory management, logistics tracking, and asset monitoring due to their advantages of low equipment cost and higher efficiency of automated inventory counting compared to manual counting. However, in actual inventory scenarios, the inventory counting distance of passive RFID is usually within 8 meters, which to some extent limits its inventory counting capabilities in large-scale warehouses and open environments.

[0003] To enhance the inventory capabilities of passive tags, some research has focused on innovations in signal transmission and power supply mechanisms. For example, technologies such as frequency division multiplexing (FDM) and code division multiplexing (CDM) have been introduced to improve the concurrent capacity of RFID systems. However, the introduction of these new technologies places higher demands on the energy of the tags. This can be addressed by increasing the energy stored in the tags to support the adoption of these new technologies and enhance tag performance. However, increasing the energy stored in the tags means that they need to spend more time charging by receiving wireless power signals, and the efficiency of tag charging can affect the real-time response of subsequent tag actions.

[0004] Therefore, improving the charging efficiency of terminal devices (tags) is a problem that needs to be solved. Summary of the Invention

[0005] This application proposes a communication method and a communication device for improving the charging efficiency of terminal devices.

[0006] In a first aspect, this application provides a communication method that can be applied to a first node, or a component of the first node (e.g., a processor, chip, or chip system), or a logic node, logic module, or software capable of implementing all or part of the functions of the first node, or a device used in conjunction with the first node. Taking the application of this method to a first node as an example, the method includes: the first node receiving multiple energy signals from a second node, the multiple energy signals including a first energy signal and a second energy signal, the frequency interval between the center frequency points of the first energy signal and the second energy signal being greater than or equal to 100 kHz, and the bandwidth occupied by the first energy signal being C Hz; the multiple energy signals being used to charge the first node; C being a value greater than 0; the first node sending a communication signal to the second node, the center frequency point of the communication signal being located at the frequency position of the center frequency point of the first energy signal plus N multiplied by C / 2; N being an even number.

[0007] In the embodiments of this application, the first node can be, but is not limited to, a novel low-power, low-cost terminal device. For example, the first node can be any one of a passive terminal device, a semi-passive terminal device, an active terminal device, an energy storage passive terminal device, an energy storage semi-passive terminal device, or an energy storage terminal device. The second node can be an access point device that supports access to and communication with the terminal device. The access point device can also be a relay device with access and / or forwarding functions. This application does not limit the specific form of the first node and the second node. Furthermore, the number of first nodes receiving the multiple energy signals may be one or more.

[0008] For example, if the above method is applied to the StarScan system, the first node can be referred to as a terminal (T) node, and the second node can be referred to as a grant (G) node. When the above method is applied to a StarScan RFID scenario, the T node can be represented by a tag or electronic tag. The first node (or T node) can be one or more of the following: passive tag, semi-passive tag, active tag, energy storage passive tag, energy storage semi-passive tag, or energy storage tag. The second node (or G node) can be represented by a reader.

[0009] In the above method, the first node receives multiple energy signals from the second node. These multiple energy signals are used to charge the first node. These multiple energy signals include a first energy signal and a second energy signal. The frequency interval between the center frequencies of the first and second energy signals is greater than or equal to 100 kHz, which helps to improve the gain of the energy signals. Since a higher gain results in a wider coverage area and stronger energy transmission, the first node can charge more efficiently using these multiple energy signals. The first node also sends a communication signal to the second node. The center frequency of this communication signal is located at the center frequency of the first energy signal plus N times C / 2, where N is an even number. This ensures that the frequency range occupied by the communication signal and the energy signal does not overlap, effectively avoiding energy signal loss due to interference between the communication and energy signals. This, in turn, guarantees the efficiency of the first node's charging using these multiple energy signals. As described above, this method can effectively improve the charging efficiency of the first node.

[0010] In one possible implementation, the bandwidth occupied by the first energy signal is the same as that occupied by the communication signal. This implementation method rationally allocates the frequency domain resources of the signals, facilitates the design of the center frequency of the energy signal and the center frequency of the communication signal, and avoids the overlap of the frequency ranges occupied by the energy signal and the communication signal, thus preventing mutual interference.

[0011] In one possible implementation, the bandwidth occupied by the first energy signal is the same as that occupied by the second energy signal. This approach rationally allocates frequency domain resources for different energy signals, avoiding resource waste and spectrum contention, improving the transmission quality and stability of energy signals, and facilitating energy signal monitoring and management.

[0012] In one possible implementation, the frequency range occupied by any one of the multiple energy signals does not overlap with the frequency range occupied by the communication signal. For example, the frequency bands occupied by the multiple energy signals could be 470 MHz, 920 MHz, 2.4 GHz, or 5.8 GHz. This implementation effectively avoids interference between the multiple energy signals and the communication signal.

[0013] In one possible implementation, the first node sends a communication signal to the second node, including: the first node charging itself using energy from multiple energy signals and then sending the communication signal to the second node. Through this implementation, the first node can charge itself using multiple energy signals from the second node, thereby enabling effective communication with the second node.

[0014] Secondly, this application provides a communication method that can be applied to a second node, or components of the second node (e.g., processors, chips, or chip systems), or a logic node, logic module, or software capable of implementing all or part of the functions of the second node, or a device used in conjunction with the second node. Taking the application of this method to a second node as an example, the method includes: the second node sending multiple energy signals to a first node, the multiple energy signals including a first energy signal and a second energy signal, the frequency interval between the center frequency points of the first energy signal and the second energy signal being greater than or equal to 100 kHz, and the bandwidth occupied by the first energy signal being C Hz; the multiple energy signals being used to charge the first node; C being a value greater than 0; the second node receiving a communication signal from the first node, the center frequency point of which is located at the frequency position of the center frequency point of the first energy signal plus N multiplied by C / 2; N being an even number.

[0015] In the embodiments of this application, the first node can be, but is not limited to, a novel low-power, low-cost terminal device. For example, the first node can be any one of a passive terminal device, a semi-passive terminal device, an active terminal device, an energy storage passive terminal device, an energy storage semi-passive terminal device, or an energy storage terminal device. The second node can be an access point device that supports terminal device access and communication with the terminal device. The access point device can also be a relay device with access and / or forwarding functions. This application does not limit the specific form of the first node and the second node. Furthermore, the number of first nodes receiving the multiple energy signals may be one or more.

[0016] For example, if the above method is applied to a StarScan system, the first node can be referred to as the terminal T node, and the second node can be referred to as the management G node. When the above method is applied to a StarScan RFID scenario, the T node can be represented by a tag or electronic tag. The first node (or T node) can be any of the following: passive tag, semi-passive tag, active tag, energy storage passive tag, energy storage semi-passive tag, or energy storage tag. The second node (or G node) can be represented by a reader.

[0017] In the above method, the second node sends multiple energy signals to the first node. These multiple energy signals are used to charge the first node. These multiple energy signals include a first energy signal and a second energy signal. The frequency interval between the center frequencies of the first and second energy signals is greater than or equal to 100 kHz. This helps to improve the gain of the energy signals. Since a higher gain results in a wider coverage area and stronger energy transmission, the first node can charge more efficiently using these multiple energy signals. The second node also receives a communication signal sent by the first node. The center frequency of this communication signal is located at the center frequency of the first energy signal plus N times C / 2, where N is an even number. This means that the frequency range occupied by the communication signal and the frequency range occupied by the energy signal do not overlap, effectively avoiding energy signal loss due to interference between the communication and energy signals. This ensures the efficiency of the first node's charging using these multiple energy signals. As described above, this method can effectively improve the charging efficiency of the first node.

[0018] In one possible implementation, the bandwidth occupied by the first energy signal is the same as that occupied by the communication signal. This implementation method rationally allocates the frequency domain resources of the signals, facilitates the design of the center frequency of the energy signal and the center frequency of the communication signal, and avoids the overlap of the frequency ranges occupied by the energy signal and the communication signal, thus preventing mutual interference.

[0019] In one possible implementation, the bandwidth occupied by the first energy signal is the same as that occupied by the second energy signal. This approach rationally allocates frequency domain resources for different energy signals, avoiding resource waste and spectrum contention, improving the transmission quality and stability of energy signals, and facilitating energy signal monitoring and management.

[0020] In one possible implementation, the frequency range occupied by any one of the plurality of energy signals does not overlap with the frequency range occupied by the communication signal. For example, the frequency bands occupied by the plurality of energy signals are 470MHz, 920MHz, 2.4GHz, or 5.8GHz. This implementation effectively avoids interference between the plurality of energy signals and the communication signal.

[0021] Thirdly, this application provides a communication device comprising a receiving module and a transmitting module; wherein, the receiving module is configured to receive multiple energy signals from a second node, the multiple energy signals including a first energy signal and a second energy signal, the frequency interval between the center frequency points of the first energy signal and the second energy signal being greater than or equal to 100 kHz, and the bandwidth occupied by the first energy signal being C Hz; the multiple energy signals are used to charge a first node; C is a value greater than 0; the transmitting module is configured to transmit a communication signal, the center frequency point of which is located at the frequency position of the center frequency point of the first energy signal plus N multiplied by C / 2; N is an even number.

[0022] In one possible design, the bandwidth occupied by the first energy signal is the same as the bandwidth occupied by the communication signal.

[0023] In one possible design, the bandwidth occupied by the first energy signal is the same as that occupied by the second energy signal.

[0024] In one possible design, the frequency range occupied by any one of the multiple energy signals does not overlap with the frequency range occupied by the communication signal.

[0025] In one possible design, the multiple energy signals occupy the frequency bands of 470MHz, 920MHz, 2.4GHz, or 5.8GHz.

[0026] In one possible design, the communication device further includes an antenna module and a charging module; when the receiving module receives multiple energy signals from the second node, it is configured to: receive the multiple energy signals from the second node through the antenna module; when the receiving module transmits a communication signal, it is specifically configured to: charge using the energy of the multiple energy signals through the charging module, and transmit the communication signal through the antenna module.

[0027] In one possible design, the communication device is any one of a passive terminal device, a semi-passive terminal device, an active terminal device, an energy storage passive terminal device, an energy storage semi-passive terminal device, or an energy storage terminal device; the second node is an access point device.

[0028] Fourthly, this application provides a communication device comprising a receiving module and a transmitting module; wherein the transmitting module is used to transmit multiple energy signals, the multiple energy signals including a first energy signal and a second energy signal, the frequency interval between the center frequency points of the first energy signal and the center frequency points of the second energy signal being greater than or equal to 100 kHz, and the bandwidth occupied by the first energy signal being C Hz; the multiple energy signals are used to charge a first node; C is a value greater than 0; the receiving module is used to receive a communication signal, the center frequency point of which is located at the frequency position of the center frequency point of the first energy signal plus N multiplied by C / 2; N is an even number.

[0029] In one possible design, the bandwidth occupied by the first energy signal is the same as the bandwidth occupied by the communication signal.

[0030] In one possible design, the bandwidth occupied by the first energy signal is the same as that occupied by the second energy signal.

[0031] In one possible design, the frequency range occupied by any one of the multiple energy signals does not overlap with the frequency range occupied by the communication signal.

[0032] In one possible design, the multiple energy signals occupy the frequency bands of 470MHz, 920MHz, 2.4GHz, or 5.8GHz.

[0033] In one possible design, the communication device further includes an antenna module; when the transmitting module transmits the plurality of energy signals, it is specifically used to transmit the plurality of energy signals through the antenna module; when the receiving module receives the communication signal, it is specifically used to receive the communication signal through the antenna module.

[0034] In one possible design, the first node is any one of a passive terminal device, a semi-passive terminal device, an active terminal device, an energy storage passive terminal device, an energy storage semi-passive terminal device, or an energy storage terminal device; the communication device is an access point device.

[0035] Fifthly, this application provides a communication device, including a processor and an interface circuit. The interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor, or to send signals from the processor to other communication devices outside the communication device. The processor is used to implement the methods described in the first aspect and any of the possible implementations through logic circuits or execution code instructions.

[0036] In a sixth aspect, this application provides a communication device, including a processor and an interface circuit. The interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor, or to send signals from the processor to other communication devices outside the communication device. The processor is used to implement the methods described in the second aspect and any of the possible implementations therein through logic circuits or execution code instructions.

[0037] In a seventh aspect, this application provides a computer-readable storage medium storing a computer program or instructions that, when executed by a processor, implement the methods of any one of the first and second aspects and any possible implementation thereof.

[0038] Eighthly, this application provides a computer program product storing instructions that, when executed by a processor, implement the methods in the first and second aspects above, and any possible implementation thereof.

[0039] Ninthly, this application provides a chip system including a processor and potentially a memory for implementing the methods in the first and second aspects above, and in any possible embodiments thereof. The chip system may be composed of chips or may include chips and other discrete devices.

[0040] In a tenth aspect, this application provides a communication system comprising a first node and a second node, wherein the first node is configured to implement the method as described in the first aspect above or any of the possible implementations thereof, and the second node is configured to implement the method as described in the second aspect above or any of the possible implementations thereof.

[0041] It should be noted that the technical effects that can be achieved by any of the third to tenth aspects or any of the third to tenth aspects can be referred to the description of the technical effects that can be achieved by any of the first and second aspects or any of the first and second aspects, which will not be repeated here. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of a starburst system applicable to an embodiment of this application;

[0043] Figure 2 This is a schematic diagram of an architecture applicable to an embodiment of this application;

[0044] Figure 3 This is a schematic flowchart of a communication method provided in an embodiment of this application;

[0045] Figure 4A frequency diagram of a multi-energy signal and a communication signal provided in an embodiment of this application;

[0046] Figure 5 A schematic diagram of a method flow for one embodiment of this application is provided;

[0047] Figure 6A A schematic diagram illustrating the frequency relationship between multiple energy signals provided in the embodiments of this application;

[0048] Figure 6B A schematic diagram of the frequency positions of the communication signal and the energy signal provided for embodiments of this application;

[0049] Figure 7 This is a schematic diagram of the structure of a communication device according to an embodiment of this application;

[0050] Figure 8 This is a schematic diagram of the structure of another communication device according to an embodiment of this application;

[0051] Figure 9 This is a schematic diagram of a chip device structure according to an embodiment of this application. Detailed Implementation

[0052] The scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0053] To better understand the solutions provided in the embodiments of this application, some terms and concepts involved in the embodiments of this application will be explained below. It should be noted that these explanations are intended to make the embodiments of this application easier to understand and should not be regarded as limiting the scope of protection claimed by this application.

[0054] (1) Frequency point: Frequency point is a numbered representation of frequency. In the spectrum, frequency point is used to refer to a specific frequency value (e.g., 900MHz, 2.4GHz).

[0055] (3) Center frequency: In a wireless communication system, the center frequency is a specific frequency value used to identify the center location of a channel or signal bandwidth. It can be the location where the signal energy is most concentrated within a frequency band or channel, or it can be a core reference point for system design, signal modulation, and spectrum management.

[0056] In the embodiments of this application, "center frequency" can be equivalent to "center frequency", and "center frequency" can be replaced with "center frequency".

[0057] For example, in a channel with a given bandwidth, the center frequency / center frequency f center It is the starting frequency of the channel (f) low ) and termination frequency (f high The intermediate value of ) is calculated using the following formula:

[0058] For example, if a Wi-Fi channel ranges from 2401 to 2423 MHz, then the center frequency / center point is 2412 MHz.

[0059] (3) Fundamental frequency: The fundamental frequency can be used as the starting frequency or reference frequency of a frequency band.

[0060] In the embodiments of this application, "base frequency point" can be equivalent to "base frequency", and "base frequency point" can be replaced with "base frequency".

[0061] (4) Energy signal: An energy signal can refer to a signal with a finite and non-zero total energy within a finite time interval.

[0062] In the embodiments of this application, the energy signal can be used as a signal to provide energy or power to a device (such as a passive terminal device), and the "energy signal" can also be replaced by the "charging signal" etc.

[0063] It should be noted that in the embodiments of this application, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, and c can be single or multiple.

[0064] Furthermore, unless otherwise stated, the ordinal numbers such as "first," "second," or "1," "2," etc. (except in special cases indicating numerical values) mentioned in the embodiments of this application are used to distinguish multiple objects and are not used to limit the size, content, order, timing, priority, or importance of the multiple objects. For example, the first energy signal and the second energy signal (or, energy signal 1 and energy signal 2) are only used to distinguish different energy signals, and do not indicate that the size, priority, or importance of the two energy signals are different.

[0065] It should be noted that in this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner. In the embodiments of this application, "of," "relevant," and "corresponding" may sometimes be used interchangeably, and it should be pointed out that their intended meanings are consistent unless their distinction is emphasized.

[0066] The terms "comprising" and "having," and any variations thereof, used in the following description of embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include other steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices. Furthermore, the term "for indicating" used in the description of embodiments of this application can include both direct and indirect indication. When describing an indication message for indicating A, it may include whether the indication message directly indicates A or indirectly indicates A, but does not necessarily mean that the indication message carries A.

[0067] The foregoing section introduced some terms and concepts involved in the embodiments of this application. The following section introduces the technical background, application scenarios, and devices involved in the embodiments of this application.

[0068] In the field of radio frequency identification (RFID), passive tags are widely used in many scenarios such as inventory management, logistics tracking, and asset monitoring due to their advantages of low equipment cost and higher efficiency of automated inventory counting compared to manual inventory counting.

[0069] Currently, the most common operating mode in RFID technology is the single-frequency RFID inventory system. This system uses a single-frequency wireless signal for energy transfer and data communication to identify and read data from passive tags. The system mainly consists of a reader and passive tags, and includes the following two stages:

[0070] 1. The stage of energy transfer and activation:

[0071] During this phase, the reader transmits electromagnetic waves of a specific frequency, i.e., an energy signal, through its antenna. When the passive tag enters the coverage area of ​​this specific frequency electromagnetic wave, it can receive energy through the tag's built-in antenna, thereby activating the circuitry within the tag and putting it into operation.

[0072] 2. The stages of data reading and communication:

[0073] After a passive tag is activated, the reader sends an interrogation signal to the tag, requesting it to transmit its stored data or information. Upon receiving the interrogation signal, the passive tag uses reflection modulation to modulate the received energy signal by changing the load state of its antenna, thus transmitting the data or information stored within the tag to the reader. The reader receives and decodes these reflection-modulated signals, thereby reading the tag's data or information.

[0074] Although single-frequency RFID inventory systems have demonstrated good reliability and cost-effectiveness in practical applications, their inherent limitations are gradually becoming apparent in large-scale deployments and complex environments, including the following:

[0075] Limited coverage distance: Due to limitations in energy transmission efficiency and signal attenuation, the inventory distance of a single-frequency RFID system is typically limited to 3-5 meters. In applications requiring wide coverage, such as large warehouses and logistics centers, this significantly reduces equipment utilization efficiency and the comprehensiveness of inventory checks.

[0076] Limited efficiency: While the time-division multiplexing method of time-slot ALOHA can effectively avoid signal collisions between tags, in scenarios with a large number of tags, the entire inventory process is time-consuming and inefficient because each tag needs to wait for its allocated time slot.

[0077] Weak anti-interference capability: When a single-frequency system encounters interference from the same frequency source, its performance will deteriorate significantly, including an increase in the bit error rate and a reduction in the effective communication distance. This problem is particularly prominent in application scenarios with complex electromagnetic environments, such as industrial areas and near communication base stations.

[0078] Poor scalability: When a single-frequency RFID system needs to increase its coverage or improve its communication rate, it is difficult to achieve performance improvement through simple adjustments. It often requires the introduction of additional equipment or changes to the overall design, which increases the complexity and cost of the system.

[0079] To enhance the inventory capabilities of passive tags, some research has focused on innovations in signal transmission and power supply mechanisms. For example, technologies such as frequency division multiplexing (FDM) and code division multiplexing (CDM) have been introduced to improve the concurrent capacity of RFID systems. However, the introduction of these new technologies places higher demands on the energy of the tags. This can be addressed by increasing the energy stored in the tags to support the adoption of these new technologies and enhance tag performance. However, increasing the energy stored in the tags means that they need to spend more time charging by receiving wireless power signals, and the charging efficiency of the tags affects the real-time response of subsequent tag actions. Therefore, improving the charging efficiency of terminal devices (or tags) is a problem that needs to be solved.

[0080] To address the aforementioned problems, embodiments of this application provide a communication method and a communication device for improving the charging efficiency of terminal devices. The communication method and the communication device are based on the same inventive concept. Since the principles underlying the problems solved by the communication method and the communication device are similar, their implementations can be mutually referenced, and repeated details will not be elaborated further.

[0081] The embodiments of this application can be applied to various communication systems, such as Internet of Things (IoT) systems, narrow band Internet of Things (NB-IoT) systems, ambient Internet of Things (Ambient-IoT) systems, LTE systems, and short-range wireless communication systems. Short-range wireless communication systems include Sparklink communication systems (including Sparklink Basic (SLB) access technology, Sparklink Low Energy (SLE) access technology, Sparklink Positioning (SLP) access technology, and Sparklink Zero-Power (SLZ) access technology, etc.). Examples include Bluetooth communication systems (including Bluetooth Low Energy (BLE) access technology), radio frequency identification (RFID) communication systems, near field communication (NFC) systems, WLAN communication systems, or wireless fidelity (Wi-Fi) systems (such as WiFi systems supporting the IEEE 802.11bp AMP (ambient power) protocol), as well as 5th-generation (5G) communication systems or NR systems, and new communication systems that will emerge in the future development of communication.

[0082] The technical solutions provided in this application can also be applied to machine-type communication (MTC), long-term evolution-machine (LTE-M) technology, device-to-device (D2D) networks, machine-to-machine (M2M) networks, IoT networks, or other networks. Among these, IoT networks may include, for example, vehicle-to-everything (V2X) networks. The communication methods in V2X systems are collectively referred to as vehicle-to-everything (V2X), where X can represent anything. For example, V2X may include vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, or vehicle-to-network (V2N) communication, etc.

[0083] In the aforementioned communication systems, devices with communication capabilities can be called communication devices, nodes, or communication nodes. For example, communication devices can include independent devices such as handheld terminals, vehicles, in-vehicle equipment, network-side equipment, user equipment, access terminals, user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, wireless communication equipment, user agents, or user devices, or components (such as chips or integrated circuits) contained within independent devices. Communication devices can be any possible smart terminal device (such as a mobile phone), smart transportation equipment (such as vehicles, drones, etc.), smart manufacturing equipment, smart home devices (such as large screens, speakers, etc.), and Internet of Things (IoT) terminals, etc.

[0084] The communication device in this application embodiment can be applied to various application scenarios, such as at least one of the following: Internet of Things (IoT), mobile internet (MI), industrial control, self-driving, transportation safety, smart city, or smart home. In certain application scenarios or network types, devices with similar communication capabilities may have other names, and this application does not impose any limitations on this.

[0085] This application uses an RFID inventory scenario, which is mainly applied in the passive communication system of Xingshan, as an example for illustration.

[0086] This application supports Spark Link / NearLink standard protocols; it also supports Bluetooth standard protocols, such as the classic Bluetooth standard protocol and / or the Bluetooth Low Energy standard protocol. Furthermore, it supports IEEE protocols, such as IEEE 802.11be / Wi-Fi 7 / EHT, IEEE 802.11bn / UHR / Wi-Fi 8, IEEE 802.11bp AMP, IEEE Integrated mmWave / IMMW, IEEE 802.15 / UWB, or IEEE 802.11bf / sensing. Additionally, it supports Ambient-IoT, RFID, or NFC protocols.

[0087] In this application, "network architecture" can be interchanged with "communication system" or "system architecture".

[0088] For example, Figure 1 Here is a diagram of a star-flash system architecture applicable to embodiments of this application. See also: Figure 1 As shown, taking a system architecture including one G node and its served T node as an example, the G node serving the T node can be understood as the G node providing network access and other services to the T node, and the G node can communicate with the T node it serves. Furthermore, the embodiments of this application can also be applied to communication between G nodes, for example, the various G nodes can communicate with each other through a distributed system (DS). The embodiments of this application can also be applied to communication between G nodes. It should be understood that... Figure 1 The number of G nodes and T nodes in the example is just one example; there could be more or fewer.

[0089] In one possible design, the aforementioned G node consists of a transmitting G (GT) node and a receiving G (GR) node. The GT node includes the transmitting function of the G node and is mainly responsible for transmitting the signals or data of the G node. The GR node includes the receiving function of the G node and is mainly responsible for transmitting the signals or data of the G node. The GT node and the GR node can be integrated into the same device or equipment, or they can be deployed on different devices or equipment. It is also possible that parts of the GT node and the GR node are integrated into the same device or equipment. There are no specific restrictions on this, and the design can be based on the actual situation or requirements.

[0090] GT nodes and GR nodes can communicate with each T node separately, for example, as follows: Figure 2As shown, the GT node can send signals or data to the T1 node through the GT-T (GT-T) link 1, and the GT node can also send signals or data to the T2 node through the GT-T (GT-T) link 2. The communication frequencies or bandwidths of GT-T link 1 and GT-T link 2 may be the same or different.

[0091] Node T1 can send signals or data to node GR through T-GR (T-GR) link 1, and node T2 can send signals or data to node GR through T-GR (T-GR) link 2.

[0092] For node T1 to communicate with both GT and GR, the communication frequency or bandwidth of T-GR link 1 may be the same as or different from that of GT-T link 1. For example, T-GR link 1 may communicate on subcarrier 1.

[0093] For node T2 to communicate with both GT and GR, the communication frequency or bandwidth of T-GR link 2 can be the same as or different from that of GT-T link 2. For example, T-GR link 2 can communicate on subcarrier 2. Subcarrier 1 and subcarrier 2 can be the same or different; there are no specific restrictions, and the settings can be configured according to the actual application or requirements.

[0094] For example, when the embodiments of this application are applied to an RFID system, especially the tag inventory process in a StarFlash passive communication system, the product form design of the above-mentioned GT node and T node can be as follows:

[0095] GT Node (or Reader): The GT node is the core of the system for energy transmission and signal transmission. Its product form includes or incorporates efficient RF modules and signal switching optimization algorithms to provide signals across multiple frequencies. GT nodes can be handheld, fixed, or integrated into specific devices, such as fixed readers in logistics centers or integrated modules in smart warehousing systems.

[0096] T-nodes (or tags): T-nodes can be passive, semi-passive, or active tags, and their product form can be thin, light, and miniaturized, facilitating large-scale deployment on goods, containers, or other items requiring inventory. The product form of a T-node will include an energy harvesting unit and an optimized antenna to enhance communication efficiency between the T-node and the GT-node.

[0097] Figure 2 The T1 and T2 nodes in the example are used in this application embodiment. The T nodes are not limited to T1 and T2 nodes, and may include more or fewer T nodes. Similarly, Figure 2 The number of GT and GR nodes in the example is also provided.

[0098] The communication system architecture or network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of communication system or network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application can also be applied to similar technical problems.

[0099] Unless otherwise specified in this article, the "first node" and "second node" are used as the main execution entities for description.

[0100] The first node can be any type of terminal capable of sending and / or receiving signals; for example, the first node can be a terminal device, a slave node, a T node, or a site (such as a Non-AP STA or Non-AP MLD). The terminal can be a user equipment for machine-type communications, a cockpit domain controller (CDC), a fifth-generation mobile communication terminal, or other types of terminals, etc. The first node can also be an entity capable of sending and / or receiving signals and having management functions; for example, the first node can be a network device (e.g., a base station), a master node, a G node, or an access point (such as an AP or an AP multi-link device (MLD)), etc.

[0101] The second node can be an entity capable of sending and / or receiving signals and having management functions; for example, the second node can be a network device (e.g., a base station), a master node, a G node, or an access point (e.g., an AP or an AP multi-link device MLD), etc. The second node can also be any type of terminal capable of sending and / or receiving signals; for example, the second node can be a terminal device, a slave node, a T node, or a site (e.g., a Non-AP STA or a Non-AP MLD). The terminal can be a user equipment for machine-type communications, a CDC, a fifth-generation mobile communication terminal, or other types of terminals, etc.

[0102] In the following text, the solution of the embodiments of this application is mainly described by taking the first node as the terminal (e.g., T node, STA, or terminal device) and the second node as the management device (e.g., G node, access point, or base station).

[0103] In the above, CDC can be abbreviated as vehicle infotainment system. Currently, in addition to traditional functions such as radio, music playback, and navigation, vehicle infotainment systems now have cellular communication capabilities (3G, 4G, etc.). They can be combined with the vehicle's controller area network (CAN)-bus (BUS) technology to enable information communication between people and vehicles, and between vehicles and the outside world, thereby enhancing user experience and providing service and safety-related functions.

[0104] In the above, master nodes and slave nodes refer to two types of nodes distinguished by their logical functions. The master node manages the slave nodes and has the function of allocating resources, being responsible for allocating resources to the slave nodes. The slave nodes communicate using the resources allocated by the master node according to its scheduling. Nodes can be various devices; for example, the master node could be a mobile phone, and the slave node could be a headset. The mobile phone and headset establish a communication connection to achieve data interaction. The mobile phone manages the headset, and the mobile phone has the function of allocating resources to the headset.

[0105] The above descriptions of "first node" and "second node" are exemplary. As the communication scenarios or systems in which the technical solutions of this application are applied change, "first node" and "second node" may have other names. For example, "first node" can be replaced by "first device" or "first communication device," and "second node" can be replaced by "second device" or "second communication device." "First communication device" can refer to the first node (or first device) itself, or a component of the first node (or first device) (e.g., a processor, chip, or chip system), or a logical node, logical module, or software capable of implementing all or part of the functions of the first node (or first device), or a device used in conjunction with the first node (or first device). Similarly, "second communication device" can refer to the second node (or second device) itself, or a component of the second node (or second device) (e.g., a processor, chip, or chip system), or a logical node, logical module, or software capable of implementing all or part of the functions of the second node (or second device), or a device used in conjunction with the second node (or second device).

[0106] In this application, "send" and "receive" refer to the direction of information / data / signal transmission. For example, "send information to XX" can be understood as the destination of the information being XX, and "send information" can include direct transmission or indirect transmission through other units or modules. "Receive information from YY" can be understood as the source of the information being YY, and "receive information" can include direct reception from YY or indirect reception from YY through other units or modules. Furthermore, "send" can also be understood as the "output" of a chip interface, and "receive" can be understood as the "input" of a chip interface. In other words, "send" or "receive" can occur between nodes / devices, such as a base station and a terminal transmitting or receiving data via an air interface. "Send" or "receive" can also occur within a device, such as between components, modules, chips, software modules, or hardware modules within the device via a bus, wiring, or interface.

[0107] It should be understood that the names of the messages (or information) in the following processes in this application are merely examples. As communication technology evolves, the names of the messages (or information, etc.) in the following processes may change. However, regardless of how the names change, as long as their meaning is the same as the function or meaning of the messages (or information, etc.) in this application, they all fall within the protection scope of this application. For example, "energy signal" can be replaced with "charging signal" or "signal," etc.

[0108] The solutions of the embodiments of this application will be described below.

[0109] This application provides a communication method, which can be applied to, but is not limited to, other methods. Figure 1 or Figure 2 The system architecture is shown. This method can be executed by the first node and the second node, or by modules (e.g., processors, chips, or chip systems) corresponding to the first and second nodes, respectively. It can also be executed by logical nodes, logical modules, or software that implement all or part of the functions of the first node and all or part of the functions of the second node, respectively. Furthermore, this application does not specifically limit the specific structure and number of the execution entities (such as the first node and the second node) of the method provided in the embodiments of this application, as long as communication can be performed according to the method provided in the embodiments of this application by running a program that records the code of the method provided in the embodiments of this application. For ease of description, the interaction between the first node and the second node is used as an example in the following description. The order of steps in the following processes is only an example. In actual applications, the execution order of steps in each process can be adjusted, and all or part of the following steps can be executed adaptively.

[0110] See Figure 3As shown, the method provided in this application embodiment may include the following steps:

[0111] S301: The second node sends multiple energy signals; correspondingly, the first node receives these multiple energy signals.

[0112] In the above, the plurality of energy signals include a first energy signal and a second energy signal. The frequency interval between the center frequency of the first energy signal and the center frequency of the second energy signal is greater than or equal to 100 kilohertz (KHz), and the bandwidth occupied by the first energy signal is C hertz (Hz). The plurality of energy signals are used to charge the first node; C is a value greater than 0.

[0113] In the embodiments of this application, the first node can be, but is not limited to, a novel low-power, low-cost terminal device. For example, the first node can be any one of a passive terminal device, a semi-passive terminal device, an active terminal device, an energy storage passive terminal device, an energy storage semi-passive terminal device, or an energy storage terminal device. The second node can be an access point device that supports access to and communication with the terminal device. The access point device can also be a relay device with access and / or forwarding functions. This application does not limit the specific form of the first node and the second node. Furthermore, the number of first nodes receiving the multiple energy signals may be one or more.

[0114] For example, if Figure 3 The method shown is applied to a star-flash system, where the first node can be called the T node and the second node can be called the management G node. Specifically, if... Figure 3 When the method shown is applied to the radio frequency identification scenario of StarShock, the T node can be represented by a tag or an electronic tag. The first node (or T node) can be any one of the following: passive tag, semi-passive tag, active tag, energy storage passive tag, energy storage semi-passive tag, or energy storage tag. The second node (or G node) can be represented by a reader.

[0115] S302: The first node sends a communication signal to the second node; correspondingly, the second node receives the communication signal from the first node.

[0116] The center frequency of the above communication signal is located at the frequency position of the center frequency of the first energy signal plus N times C / 2; N is an even number.

[0117] In one possible implementation, the bandwidth occupied by the first energy signal is the same as the bandwidth occupied by the communication signal.

[0118] In one possible implementation, the bandwidth occupied by the first energy signal is the same as that occupied by the second energy signal.

[0119] In one possible implementation, the frequency range occupied by any one of the multiple energy signals does not overlap with the frequency range occupied by the communication signal. This avoids mutual interference when transmitting the multiple energy signals and the communication signal.

[0120] In the embodiments of this application, the frequency range occupied by the multiple energy signals and the frequency range occupied by the communication signals do not overlap, and the frequency range occupied by the multiple energy signals and the frequency range occupied by the communication signals can be located in the same frequency band or in different frequency bands, without specific restrictions.

[0121] For example, the frequency bands of the aforementioned energy signals can be 470MHz, 920MHz, 2.4GHz, or 5.8GHz. The frequency bands of the communication signals can be 2.4GHz, 5GHz, or 6GHz, etc.

[0122] For example, the operating frequency range of the aforementioned 470MHz band can be 470MHz to 510MHz. This band offers advantages such as long communication distance, strong penetration capability, and low power consumption. Passive RFID systems operate in the ultra-high frequency (UHF) band (860MHz to 960MHz) or the 2.45MHz band. The center frequency of UHF RFID is 860MHz to 960MHz. The 920MHz band falls within the UHF band, and its operating frequency range can be 902MHz to 928MHz, although the specific range may vary in different regions. For example, in China, the operating frequency range of the 920MHz band can be 920MHz to 925MHz and 840MHz to 845MHz. The advantages of the 920MHz band include strong electromagnetic wave penetration and coverage, suitability for use in environments with obstacles, and strong anti-interference capabilities. The aforementioned 2.4GHz band can operate within a frequency range of 2.400GHz to 2.4835GHz. This band is known as the Industry, Scientific and Medical (ISM) band, a widely usable unlicensed band. Its advantages include wide applicability, strong signal penetration, and suitability for use in environments with large coverage areas. The aforementioned 5.8GHz band can operate within a frequency range of 5.725GHz to 5.850GHz. This band offers advantages such as high anti-interference capabilities, support for high-speed data transmission, cleaner signal, and suitability for high-density user environments.

[0123] For example, the operating frequency range of the aforementioned 5GHz band can be 5.15GHz to 5.85GHz. This band is a wireless communication band, where signal transmission speed is faster, making it suitable for high-speed data communication. The operating frequency range of the aforementioned 6GHz band can be 5.925GHz to 7.125GHz. This band has a continuous large bandwidth, making it suitable for mobile communication and wireless local area networks, etc.

[0124] For example, the method is applied to Figure 2 In the system architecture shown, during the charging and transmission phase, the GT node (i.e., the example of the second node mentioned above) sends multiple energy signals, including energy signal 1 and energy signal 2 (i.e., examples of the first and second energy signals mentioned above). After receiving these multiple energy signals, the T1 node sends communication signal 1 to the GR (i.e., the example of the second node mentioned above) (i.e., the example of the first node sending a communication signal to the second node mentioned above).

[0125] See Figure 4 As shown, the bandwidth of energy signal 1, energy signal 2, and communication signal 1 is all C Hz. The center frequency of energy signal 1 is denoted as f1 Hz, and the center frequency of energy signal 2 is denoted as f2 Hz. The center frequency interval between energy signal 1 and energy signal 2 is greater than or equal to 100 kHz. The center frequency f of communication signal 1 is f = f1 + N*C / 2 Hz, where N is an even number (e.g., N is 2 or 4). The center frequency f of communication signal 1 cannot exceed f2 - C Hz to avoid overlap between the frequency range occupied by communication signal 1 and the frequency range occupied by energy signal 1 or energy signal 2, which could cause interference during transmission. Here, "+" represents addition, "-" represents subtraction, "*" represents multiplication, and " / " represents division.

[0126] Alternatively, if the bandwidth occupied by the communication signal (e.g., communication signal 1) is considered to be the size of a "communication sub-channel", the frequency interval between the center frequency of energy signal 1 and the center frequency of energy signal 2 should be greater than or equal to 100KHz and be an integer multiple of the communication sub-channel. This not only improves the gain of the energy signal, but also avoids interference during transmission caused by the overlap of the frequency range occupied by communication signal 1 and energy signal 1 or energy signal 2.

[0127] exist Figure 4 In this embodiment, the frequency range occupied by the communication signal 1 and the frequency range occupied by the multiple energy signals can be located in the same frequency band. However, in this embodiment, they can also be located in different frequency bands. There is no restriction on this, as long as the frequency ranges occupied by these signals do not overlap with each other during transmission.

[0128] For example, the frequency range occupied by the aforementioned communication signal 1 and the frequency ranges occupied by the multiple energy signals can all be located in the same frequency band, namely the 2.4 GHz band. Alternatively, the frequency ranges occupied by the multiple energy signals can all be located in the 920 MHz band, while the frequency range occupied by the communication signal 1 is located in the 5 GHz band.

[0129] The aforementioned multiple energy signals are not limited to energy signal 1 and energy signal 2; they may include more or fewer energy signals. Energy signal 1 and energy signal 2 can be any two adjacent energy signals from the multiple energy signals. For example, the aforementioned multiple energy signals may also include energy signal 3, which is adjacent to energy signal 2. In this case, the design of the center frequency and bandwidth between energy signal 2 and energy signal 3, as well as the corresponding communication signal, can refer to the design of the center frequency and bandwidth between energy signal 1 and energy signal 2, as well as communication signal 1, as described above. Further details will not be elaborated here.

[0130] Figure 4 The example described uses multiple energy signals and communication signals occupying equal bandwidth. In practical applications, the bandwidth occupied by these multiple energy signals may be different or partially different, and the bandwidth occupied by each energy signal and communication signal may also be different. In these cases, for these multiple energy signals, if the center frequency of adjacent energy signals is greater than or equal to 100kHz, the frequencies of two adjacent energy signals and the communication signal therein can be designed with reference to the design principles between the center frequencies of energy signal 1, energy signal 2, and communication signal 1, to avoid interference between the communication signals and energy signals.

[0131] In one possible implementation, the first node sends a communication signal to the second node, including: the first node charging itself using the energy of the plurality of energy signals and then sending the communication signal to the second node.

[0132] For example, the first node receives multiple energy signals sent by the second node through its built-in or external antenna, and collects and stores energy through its energy management module, thus charging the first node. Then, the first node can use the stored energy to send communication signals to the second node through its built-in or external antenna.

[0133] In the above method, the first node receives multiple energy signals from the second node. These multiple energy signals are used to charge the first node. These multiple energy signals include a first energy signal and a second energy signal. The frequency interval between the center frequencies of the first and second energy signals is greater than or equal to 100 kHz, which helps to improve the gain of the energy signals. Since a higher gain results in a wider coverage area and stronger energy transmission, the first node can charge more efficiently using these multiple energy signals. The first node also sends a communication signal to the second node. The center frequency of this communication signal is located at the center frequency of the first energy signal plus N times C / 2, where N is an even number. This ensures that the frequency range occupied by the communication signal and the energy signal does not overlap, effectively avoiding energy signal loss due to interference between the communication and energy signals. This, in turn, guarantees the efficiency of the first node's charging using these multiple energy signals. As described above, this method can effectively improve the charging efficiency of the first node.

[0134] The following is based on Figure 3 The scheme shown is applied to a star stroboscopic system as an example, and the above is illustrated through specific implementation methods. Figure 3 The proposed solution will be described in detail.

[0135] In the following embodiments, based on the above... Figure 3 The scheme shown uses the first node as... Figure 2 In the architecture shown, node T1 is the second node. Figure 2 The G node (composed of GT and GR nodes) in the illustrated architecture is used as an example to provide a detailed description of the scheme in this application's embodiments. The step numbers in the flowcharts described below are merely examples of the execution flow and do not constitute a restriction on the order of step execution. Steps in the various implementations of this application have no temporal dependencies and there is no strict execution order between them. Furthermore, not all steps shown in the flowcharts are mandatory; some steps can be added or deleted based on actual needs. See also... Figure 5 As shown, the method flow of this embodiment includes the following steps:

[0136] S501: The GT node sends energy signal 1, energy signal 2, and energy signal 3 (i.e., the above). Figure 3 (Example of the scheme shown: the second node sends multiple energy signals to the first node). Accordingly, node T1 receives energy signal 1, energy signal 2, and energy signal 3.

[0137] In one possible implementation, the RF module of the GT node generates energy signal 1, energy signal 2, and energy signal 3.

[0138] In one possible implementation, the GT node broadcasts energy signals 1, 2, and 3 via its antenna. Correspondingly, at least one T node (including T1 node) within the GT node's energy signal coverage area receives energy signals 1, 2, and 3.

[0139] In the above, the center frequencies of energy signal 1, energy signal 2, and energy signal 3 are different.

[0140] For example, energy signal 1, energy signal 2, and energy signal 3 each occupy a bandwidth of C Hz; C is a value greater than 0. Energy signal 1 and energy signal 2 are adjacent energy signals, and energy signal 2 and energy signal 3 are adjacent energy signals. The center frequencies of these three energy signals conform to the following rules:

[0141] Rule 1: The center frequency interval between adjacent energy signals is greater than or equal to 100KHz.

[0142] For example, the center frequency of energy signal 1 is used as the fundamental frequency, denoted as f1 kHz. The center frequencies of energy signal 2 and energy signal 3 are used as secondary frequencies, denoted as f2 kHz and f3 kHz respectively. These three energy signals are based on a 920 MHz fundamental frequency (i.e., taking the three energy signals as being located within the 920 MHz frequency band as an example) to ensure compatibility between the energy signals and the communication channel and reduce interference.

[0143] For example, if the frequency interval between the center frequencies of energy signal 1 and energy signal 2 is d kHz, and the frequency interval between the center frequencies of energy signal 2 and energy signal 3 is d kHz, then the center frequency of energy signal 2 is f2 = f1 + d kHz, and the center frequency of energy signal 3 is f3 = f2 + d kHz; where d is a value greater than or equal to 100. For example, d = 100.4.

[0144] Rule 2: The center frequency interval between adjacent energy signals is an integer multiple of the communication sub-channel.

[0145] The communication subchannel is used to transmit a communication signal, and the size of the communication subchannel can be represented by the bandwidth occupied by the communication signal. In this embodiment, the example is given where the bandwidth occupied by the communication signal is equal to the bandwidth occupied by the energy signal. Therefore, the bandwidth occupied by the communication signal is C Hz, where C is a value greater than 0.

[0146] For example, such as Figure 6AAs shown, the interval between the center frequency f1 kHz of energy signal 1 and the center frequency f2 kHz of energy signal 2 is d kHz, where d kHz is an integer multiple of the bandwidth of the communication signal (i.e., the communication sub-channel), and d is a value greater than or equal to 100. The integer number of communication sub-channels between energy signal 1 and energy signal 2 (e.g., ...) Figure 6A The communication sub-channels 1 to 3 shown can be used to transmit communication signals.

[0147] The interval between the center frequency f2 kHz of energy signal 2 and the center frequency f3 kHz of energy signal 3 is also d kHz, where d kHz is an integer multiple of the bandwidth of the communication signal (i.e., the communication sub-channel). The integer number of communication sub-channels between energy signal 2 and energy signal 3 (e.g.,...) Figure 6A The communication sub-channels 4 to 6 shown can be used to transmit communication signals.

[0148] Figure 6A The communication sub-channels 1 to 6 shown are all of equal size and have a frequency of C kHz.

[0149] In this embodiment, by designing to use energy signals of a sub-frequency and designing the above-mentioned rules, the system can achieve frequency diversity. This ensures the stability and efficiency of energy transmission even in poor energy signal propagation environments, avoiding problems such as low energy transmission efficiency caused by the potential attenuation or blockage of single-frequency energy signals.

[0150] Therefore, based on the above, it can be seen that node T1 can achieve efficient charging through energy signal 1, energy signal 2 and energy signal 3, and this transmission process is compatible with the working mechanism of the communication system, and can also reduce the interference of energy signals transmitted during the charging process of node T1 on normal communication.

[0151] In the above S501, the above T1 node is an example of at least one T node within the energy signal coverage range of the GT node. In reality, there may be other T1 nodes, which can all obtain energy by referring to the T1 node and achieve the charging effect.

[0152] For example, in an RFID inventory scenario, S501 can be considered as the energy transfer and activation stage. The G node (composed of the GT node and the GR node) is the reader, and the T node is the tag. If the T1 node is a passive tag, the passive tag receives energy signals 1, 2, and 3 sent by the GT node through its built-in antenna. The energy harvesting module (or the charging module) of the passive tag acquires and stores energy through energy signals 1, 2, and 3, thus charging the passive tag and activating the circuitry within it, putting it into working condition.

[0153] S502: The GT node sends a query message to the T1 node. Correspondingly, the T1 node receives the query message.

[0154] S502 is an optional step.

[0155] For example, in an RFID inventory scenario, the GT node (reader) sends a query message to the T1 node (e.g., a passive tag), which instructs the T1 node to report the data or information it stores.

[0156] S503: Node T1 sends communication signal 1 (i.e., the above) to node GR. Figure 3 (Example of the scheme where the first node sends a communication signal to the second node). Accordingly, the GR node receives communication signal 1 from the T1 node.

[0157] For example, in an RFID inventory scenario, a T1 node (e.g., a passive tag) sends a communication signal 1 to a GR node (reader) based on the query information received from a GT node (reader). This communication signal 1 is used to carry the data or information stored by the T1 node, such as the identification information of the T1 node.

[0158] The center frequency of the communication signal 1 is represented as f4 kHz, where f4 = f1 + N*(C / 2), and N is an even number.

[0159] For example, see Figure 6B As shown, communication signal 1 can be transmitted through any one of the communication sub-channels 1 to 6, and the center frequency f4 of communication signal 1 can be the center frequency of any one of the communication sub-channels 1 to 6.

[0160] If communication signal 1 is transmitted through communication sub-signal 1, then the center frequency of communication signal 1 is f4 = f1 + 2*(C / 2); that is, N = 2.

[0161] If communication signal 1 is transmitted through communication sub-signal 2, then the center frequency of communication signal 1 is f4 = f1 + 4*(C / 2); that is, N = 4.

[0162] If communication signal 1 is transmitted through communication sub-signal 3, then the center frequency of communication signal 1 is f4 = f1 + 6*(C / 2); that is, N = 6.

[0163] If communication signal 1 is transmitted through communication sub-signal 4, then the center frequency of communication signal 1 is f4 = f1 + 10 * (C / 2); that is, N = 10.

[0164] If communication signal 1 is transmitted through communication sub-signal 5, then the center frequency of communication signal 1 is f4 = f1 + 12 * (C / 2); that is, N = 12.

[0165] If communication signal 1 is transmitted through communication sub-signal 6, then the center frequency of communication signal 1 is f4 = f1 + 12*(C / 2); that is, N = 14.

[0166] As can be seen from the above, when transmitting communication signal 1, energy signal 1, energy signal 2, and energy signal 3, communication signal 1 will not interfere with any one or more of the energy signals 1, 2, or 3.

[0167] In the above implementation, the G node can provide energy or power to the passive T node (or semi-passive T node, etc.) by sending multiple energy signals (such as a base frequency energy signal and a secondary frequency energy signal), thus avoiding the use of a single frequency energy signal to provide energy or power to the passive T node (or semi-passive T node, etc.). Furthermore, the multiple energy signals are designed to have a center frequency interval of greater than or equal to 100 kHz between adjacent energy signals, and to be an integer multiple of the communication sub-channel. This helps to improve the gain of the multiple energy signals, improve the charging efficiency of the T node, and thus improve the real-time response capability and working capability of the T node. Moreover, this design is compatible with communication, that is, the charging process and the communication process can coexist, avoiding interference with the communication signal, thereby improving the working capability and efficiency of the entire system.

[0168] It should be understood that the above embodiments may change as the technical solutions evolve, and this application is not limited to the contents shown in the above embodiments.

[0169] Furthermore, in the embodiments and implementations described above, by introducing multiple energy signals with different center frequencies / frequency points, efficient energy transmission and signal propagation environment optimization are achieved. This method is not limited to Xingshan's RFID system, but can also be applied to other communication systems or scenarios with similar needs (such as pursuing efficient spectrum utilization and signal transmission optimization), such as wireless charging or signal enhancement scenarios in 5G networks, especially in areas with insufficient signal coverage or high-density communication environments. By adjusting and optimizing the configuration of multiple frequency points, the network coverage and capacity can be improved. Of course, the embodiments of this application can also be applied to scenarios where fixed-line and mobile communication technologies converge, and other examples will not be listed here.

[0170] In the embodiments provided above, the methods provided by the embodiments of this application have been described from the perspective of interaction between various devices. To implement the functions of the methods provided in the embodiments or implementations of this application, the first node or the second node may include hardware structures and / or software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Whether a particular function is executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules depends on the specific application and design constraints of the technical solution.

[0171] The module division in this embodiment is illustrative and represents only one logical functional division; in actual implementation, other division methods may be used. Furthermore, the functional modules in the various embodiments or implementations of this application can be integrated into a single processor, exist as separate physical entities, or be integrated into a single module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0172] Similar to the above concept, such as Figure 7 As shown, this application embodiment also provides a communication device 700 for implementing the functions of the first node or the second node in the above method. For example, the communication device 700 can be a software module or a chip system. In this application embodiment, the chip system can be composed of chips or can include chips and other discrete devices. The communication device 700 may include: a communication unit 701 and a processing unit 702.

[0173] In this embodiment, the communication unit 701, also referred to as the transceiver unit, may include a sending unit and / or a receiving unit, respectively used to execute the sending and receiving steps of the first node or the second node in the above method embodiments. The processing unit 702 may be used to read instructions and / or data from the storage module so that the communication device 700 implements the aforementioned method embodiments.

[0174] Optionally, the communication device 700 may further include a storage unit 703, which is equivalent to a storage module and can be used to store instructions and / or data.

[0175] The following, combined with Figures 7 to 8 This application provides a detailed description of the communication device provided in its embodiments. It should be understood that the descriptions of the device embodiments correspond to the descriptions of the method embodiments; therefore, any content not described in detail can be found above. Figure 3 and Figure 5 The method shown is used to achieve this, and for the sake of simplicity, it will not be described in detail here.

[0176] The communication unit 701 can also be called a transceiver, transceiver, or transceiver device. The processing unit can also be called a processor, processing board, processing module, or processing device. Optionally, the device in the communication unit 701 used to implement the receiving function can be considered a receiving unit, and the device in the communication unit 701 used to implement the transmitting function can be considered a transmitting unit. That is, the communication unit 701 includes a receiving unit (or receiving module) and a transmitting unit (or transmitting module). The communication unit can sometimes also be called a transceiver, transceiver circuit, or transceiver unit. The receiving unit can sometimes be called a receiver, receiver, or receiving circuit. The transmitting unit can sometimes be called a transmitter, transmitter, or transmitting circuit.

[0177] When the communication device 700 is applied in the above embodiments Figure 3 The first node in the process shown:

[0178] The communication unit 701 is used to receive multiple energy signals from the second node. The multiple energy signals include a first energy signal and a second energy signal. The frequency interval between the center frequency points of the first energy signal and the second energy signal is greater than or equal to 100 kHz. The bandwidth occupied by the first energy signal is C Hz. The multiple energy signals are used to charge the first node. C is a value greater than 0.

[0179] The communication unit 701 is also used to transmit a communication signal, the center frequency of which is located at the center frequency of the first energy signal plus N times C / 2; where N is an even number.

[0180] The processing unit 702 is used to process information and / or data, etc.

[0181] When the communication device 700 is applied in the above embodiments Figure 3 The second node in the process shown:

[0182] The communication unit 701 is used to send multiple energy signals, including a first energy signal and a second energy signal. The frequency interval between the center frequency points of the first energy signal and the second energy signal is greater than or equal to 100 kHz, and the bandwidth occupied by the first energy signal is C Hz. The multiple energy signals are used to charge the first node; C is a value greater than 0.

[0183] The communication unit 701 is also used to receive a communication signal, the center frequency of which is located at the center frequency of the first energy signal plus N times C / 2; where N is an even number.

[0184] The processing unit 702 is used to process information and / or data, etc.

[0185] The above is just an example. Processing unit 702 and communication unit 701 can also perform other functions. For a more detailed description, please refer to [link / reference needed]. Figure 3 and Figure 5 The relevant descriptions in the method embodiments shown are not repeated here.

[0186] like Figure 8 The image shown is a communication device 800 provided in an embodiment of this application. Figure 8 The communication device shown can be Figure 7 This illustrates one hardware circuit implementation of the communication device. This communication device 800 can be applied to the flowchart shown above to perform the functions of the first or second node in the method embodiments described. For ease of explanation, Figure 8 Only the main components of the communication device are shown.

[0187] like Figure 8 As shown, the communication device 800 includes a communication interface 801 and a processor 802. The communication interface 801 and the processor 802 are coupled to each other. It is understood that the communication interface 801 can be a transceiver or an input / output interface, or an interface circuit such as a transceiver circuit. Optionally, the communication device 800 may further include a memory 803 for storing instructions executed by the processor 802, or storing input data required by the processor 802 to execute instructions, or storing data generated after the processor 802 executes instructions.

[0188] When the communication device 800 is used to achieve the above Figure 3 and Figure 5 In the method shown, the communication interface 801 is used to implement the functions of the communication unit 701, and the processor 802 is used to implement the functions of the processing unit 702.

[0189] This application embodiment does not limit the specific connection medium between the communication interface 801, processor 802, and memory 803. This application embodiment... Figure 8 The memory 803, processor 802, and communication interface 801 are connected via a communication bus 804. The communication bus 804 is in Figure 8 The connections between other components are shown in bold and are for illustrative purposes only, not as limiting information. The communication bus 804 can be divided into address bus, data bus, control bus, etc. For ease of illustration, Figure 8 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0190] When the aforementioned communication device is a chip. Figure 9A simplified schematic diagram of a chip device structure is shown. The chip 900 includes interface circuitry 901 and one or more processors 902. Optionally, the chip 900 may also include a bus. Wherein:

[0191] The processor 902 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the method for determining the service node information described above can be completed through integrated logic circuits in the hardware of the processor 902 or through software instructions. The processor 902 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods and steps disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor.

[0192] The interface circuit 901 can be used to send or receive data, instructions or information. The processor 902 can use the data, instructions or other information received by the interface circuit 901 to process the data, instructions or other information, and can send the processed information out through the interface circuit 901.

[0193] Optionally, chip 900 also includes memory 903, which may include read-only memory and random access memory, and provides operation instructions and data to the processor. A portion of memory 903 may also include non-volatile random access memory (NVRAM).

[0194] Optionally, the memory stores executable software modules or data structures, and the processor can execute corresponding operations by calling the operation instructions stored in the memory (which may be stored in the operating system).

[0195] Optionally, the chip can be used in the first node or the second node involved in the embodiments of this application. Optionally, the interface circuit 901 can be used to output the execution result of the processor 902. For the communication methods provided by one or more embodiments of this application, please refer to the foregoing embodiments, which will not be repeated here.

[0196] It should be noted that the functions of the interface circuit 901 and the processor 902 can be implemented through hardware design, software design, or a combination of hardware and software; no restrictions are imposed here.

[0197] This application also provides a computer-readable storage medium storing computer instructions for implementing the methods executed by the first node or the second node in the above method embodiments.

[0198] For example, when the computer program is executed by the computer, it enables the computer to implement the method executed by the first node or the second node in the above method embodiments.

[0199] This application also provides a computer program product containing instructions that, when executed by a computer, cause the computer to implement the method executed by the first node or the second node in the above method embodiments.

[0200] This application also provides a chip, including a processor, for calling computer programs or computer instructions stored in the memory, so that the processor executes the above-mentioned... Figure 3 and Figure 5 The communication method shown is a specific implementation method.

[0201] In one possible implementation, the chip's input corresponds to the above... Figure 3 and Figure 5 The receiving operation shown in the implementation corresponds to the output of the chip described above. Figure 3 and Figure 5 The sending operation in the implementation shown.

[0202] Optionally, the processor is coupled to the memory via an interface.

[0203] Optionally, the chip also includes a memory that stores computer programs or computer instructions.

[0204] The processor mentioned above can be a general-purpose central processing unit, a microprocessor, an application-specific integrated circuit (ASIC), or one or more devices used to control the above. Figure 3 and Figure 5 The illustrated implementation is an integrated circuit for program execution using a communication method. The memory mentioned above can be read-only memory (ROM) or other types of static storage devices capable of storing static information and instructions, such as random access memory (RAM).

[0205] It should be noted that, for the sake of convenience and brevity, the explanations and beneficial effects of the relevant content in any of the communication devices provided above can be referred to the corresponding service node information determination method embodiments provided above, and will not be repeated here.

[0206] In this application, the communication devices may further include a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on the operating system layer. The hardware layer may include hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also known as main memory). The operating system layer may be any one or more computer operating systems that implement business processing through processes, such as Linux, Unix, Android, iOS, or Windows. The application layer may include applications such as browsers, address books, word processing software, and instant messaging software.

[0207] The module division in this embodiment is illustrative and represents only one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in each embodiment of this application can be integrated into a single processor, exist as separate physical entities, or be integrated into a single module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0208] Through the above description of the embodiments, those skilled in the art will clearly understand that the embodiments of this application can be implemented in hardware, firmware, or a combination thereof. When implemented in software, the above functions can be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transfer of a computer program from one place to another. Storage media can be any available medium accessible to a computer. For example, but not limited to, computer-readable media can include RAM, ROM, electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, magnetic disk storage media, or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible to a computer. Furthermore, any connection can suitably be a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of the medium. As used in embodiments of this application, disks and discs include compact discs (CDs), laser discs, optical discs, digital video discs (DVDs), floppy disks, and Blu-ray discs, wherein disks typically magnetically copy data, while discs optically copy data using lasers. The combinations above should also be included within the scope of protection for computer-readable media.

[0209] In summary, the above descriptions are merely embodiments of this application and are not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made based on the disclosure of this application should be included within the scope of protection of this application.

Claims

1. A communication method, characterized in that, The method, applied to a first node or a chip of a first node, includes: The system receives multiple energy signals from a second node, including a first energy signal and a second energy signal. The frequency interval between the center frequency points of the first energy signal and the second energy signal is greater than or equal to 100 kHz, and the bandwidth occupied by the first energy signal is C Hz. The multiple energy signals are used to charge the first node, where C is a value greater than 0. A communication signal is transmitted, wherein the center frequency of the communication signal is located at the frequency position of the center frequency of the first energy signal plus N times C / 2; where N is an even number.

2. The method according to claim 1, characterized in that, The bandwidth occupied by the first energy signal is the same as the bandwidth occupied by the communication signal.

3. The method according to claim 1 or 2, characterized in that, The bandwidth occupied by the first energy signal is the same as that occupied by the second energy signal.

4. The method according to any one of claims 1-3, characterized in that, The frequency range occupied by any one of the plurality of energy signals does not overlap with the frequency range occupied by the communication signal.

5. The method according to any one of claims 1-4, characterized in that, The frequency bands occupied by the multiple energy signals are 470MHz, 920MHz, 2.4GHz, or 5.8GHz.

6. The method according to any one of claims 1-5, characterized in that, The transmission of the communication signal includes: charging using the energy of the plurality of energy signals and then transmitting the communication signal.

7. The method according to any one of claims 1-6, characterized in that, The first node is any one of a passive terminal device, a semi-passive terminal device, an active terminal device, an energy storage passive terminal device, an energy storage semi-passive terminal device, or an energy storage terminal device, and the second node is an access point device.

8. A communication method, characterized in that, The method, applied to a second node or a chip of a second node, includes: Multiple energy signals are transmitted, including a first energy signal and a second energy signal. The frequency interval between the center frequency points of the first energy signal and the second energy signal is greater than or equal to 100 kHz, and the bandwidth occupied by the first energy signal is C Hz. The multiple energy signals are used to charge the first node; C is a value greater than 0. The communication signal is received, and the center frequency of the communication signal is located at the frequency position of the center frequency of the first energy signal plus N times C / 2; N is an even number.

9. The method according to claim 8, characterized in that, The bandwidth occupied by the first energy signal is the same as the bandwidth occupied by the communication signal.

10. The method according to claim 8 or 9, characterized in that, The bandwidth occupied by the first energy signal is the same as that occupied by the second energy signal.

11. The method according to any one of claims 8-10, characterized in that, The frequency range occupied by any one of the plurality of energy signals does not overlap with the frequency range occupied by the communication signal.

12. The method according to any one of claims 8-11, characterized in that, The frequency bands occupied by the multiple energy signals are 470MHz, 920MHz, 2.4GHz, or 5.8GHz.

13. The method according to any one of claims 8-12, characterized in that, The first node is any one of a passive terminal device, a semi-passive terminal device, an active terminal device, an energy storage passive terminal device, an energy storage semi-passive terminal device, or an energy storage terminal device, and the second node is an access point device.

14. A communication device, characterized in that, The device includes: a receiving module and a transmitting module; The receiving module is used to receive multiple energy signals from the second node. The multiple energy signals include a first energy signal and a second energy signal. The frequency interval between the center frequency points of the first energy signal and the second energy signal is greater than or equal to 100 kHz. The bandwidth occupied by the first energy signal is C Hz. The multiple energy signals are used to charge the first node. C is a value greater than 0. The transmitting module is used to transmit a communication signal, the center frequency of which is located at the center frequency of the first energy signal plus N times C / 2; where N is an even number.

15. The apparatus according to claim 14, characterized in that, The bandwidth occupied by the first energy signal is the same as the bandwidth occupied by the communication signal.

16. The apparatus according to claim 14 or 15, characterized in that, The bandwidth occupied by the first energy signal is the same as that occupied by the second energy signal.

17. The apparatus according to any one of claims 14-16, characterized in that, The frequency range occupied by any one of the plurality of energy signals does not overlap with the frequency range occupied by the communication signal.

18. The apparatus according to any one of claims 14-17, characterized in that, The frequency bands occupied by the multiple energy signals are 470MHz, 920MHz, 2.4GHz, or 5.8GHz.

19. The apparatus according to any one of claims 14-18, characterized in that, The device also includes: an antenna module and a charging module; When the receiving module receives multiple energy signals from the second node, it has the function of: receiving the multiple energy signals from the second node through the antenna module; When transmitting communication signals, the receiving module is specifically used to: charge the device using the energy of the multiple energy signals through the charging module, and transmit the communication signals through the antenna module.

20. The apparatus according to any one of claims 14-19, characterized in that, The device is any one of a passive terminal device, a semi-passive terminal device, an active terminal device, an energy storage passive terminal device, an energy storage semi-passive terminal device, or an energy storage terminal device, and the second node is an access point device.

21. A communication device, characterized in that, The device includes: a receiving module and a transmitting module; The transmitting module is used to transmit multiple energy signals, including a first energy signal and a second energy signal. The frequency interval between the center frequency points of the first energy signal and the second energy signal is greater than or equal to 100 kHz, and the bandwidth occupied by the first energy signal is C Hz. The multiple energy signals are used to charge the first node; C is a value greater than 0. The receiving module is used to receive a communication signal, the center frequency of which is located at the center frequency of the first energy signal plus N times C / 2; where N is an even number.

22. The apparatus according to claim 21, characterized in that, The bandwidth occupied by the first energy signal is the same as the bandwidth occupied by the communication signal.

23. The apparatus according to claim 21 or 22, characterized in that, The bandwidth occupied by the first energy signal is the same as that occupied by the second energy signal.

24. The apparatus according to any one of claims 21-23, characterized in that, The frequency range occupied by any one of the plurality of energy signals does not overlap with the frequency range occupied by the communication signal.

25. The apparatus according to any one of claims 21-24, characterized in that, The frequency bands occupied by the multiple energy signals are 470MHz, 920MHz, 2.4GHz, or 5.8GHz.

26. The apparatus according to any one of claims 21-25, characterized in that, The device further includes: an antenna module; When transmitting the plurality of energy signals, the transmitting module is specifically used to: transmit the plurality of energy signals through the antenna module; When receiving the communication signal, the receiving module is specifically used to: receive the communication signal through the antenna module.

27. The apparatus according to any one of claims 21-26, characterized in that, The first node is any one of a passive terminal device, a semi-passive terminal device, an active terminal device, an energy storage passive terminal device, an energy storage semi-passive terminal device, or an energy storage terminal device, and the device is an access point device.

28. A communication device, characterized in that, It includes a processor and a memory, the memory being used to store program instructions, the processor executing the program instructions causing the method as described in any one of claims 1 to 7 to be performed, or causing the method as described in any one of claims 8 to 13 to be performed.

29. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer-readable program or instructions that, when executed on a communication device, cause the method as described in any one of claims 1 to 7 to be performed, or the method as described in any one of claims 8 to 13 to be performed.

30. A computer program product, characterized in that, The computer program product includes a computer program or instructions that, when run on a computer, cause the method as described in any one of claims 1 to 7 to be performed, or the method as described in any one of claims 8 to 13 to be performed.

Images