CN117478210A - BSC equipment identification method and device and communication equipment - Google Patents
BSC equipment identification method and device and communication equipment Download PDFInfo
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- H—ELECTRICITY
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- H—ELECTRICITY
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Abstract
The application discloses a BSC device identification method, a BSC device identification apparatus and a communication device, belonging to the technical field of communication, wherein the BSC device identification method comprises the following steps: the first node transmits first information, wherein the first information is used for triggering BSC equipment to transmit a first back scattering signal according to the first configuration information; the first node determines an identity of a BSC device that sent the first backscatter signal.
Description
Technical Field
The application belongs to the technical field of communication, and particularly relates to a BSC device identification method and device and a communication device.
Background
In a conventional radio frequency identification (Radio Frequency Identification, RFID) backscatter communication system, a reader/writer performs identification and data transmission of backscatter communication (Backscatter Communication, BSC) devices (i.e., electronic tags Tag) through a inventory process. In order to avoid mutual interference and signal collision between BSC devices, the BSC devices need to obtain unique opportunities to transmit data on each orthogonal resource (e.g., time resource) through contention type random access, thereby completing identification. When the number of BSC devices is large, this access is extremely inefficient, so that it takes a lot of time to complete the identification of all BSC devices.
Disclosure of Invention
The embodiment of the application provides a BSC (base station controller) equipment identification method, a BSC equipment identification device and communication equipment, which can solve the problem of lower BSC equipment identification efficiency.
In a first aspect, there is provided a method for identifying a BSC device, applied to a first node, the method comprising:
the first node transmits first information, wherein the first information is used for triggering BSC equipment to transmit a first back scattering signal according to the first configuration information;
the first node determines an identity of a BSC device that sent the first backscatter signal.
In a second aspect, there is provided a method for identifying a BSC apparatus, applied to the BSC apparatus, the method comprising:
the BSC equipment receives first information, wherein the first information is used for triggering the BSC equipment to send a first back scattering signal;
the BSC device sends a first backscatter signal according to the first configuration information.
In a third aspect, there is provided a method for identifying a BSC apparatus, applied to a third node, the method comprising:
the third node receives the first backscatter signal and/or the second backscatter signal;
determining a final result according to the first back scattering signal and/or the second back scattering signal, and feeding back the final result to a first node through fifth information; or determining intermediate information according to the first back scattering signal and/or the second back scattering signal, and feeding back the intermediate information to the first node through sixth information;
Wherein the final result comprises an identification of the BSC device that sent the first backscatter signal or an identification of the BSC device that sent the first backscatter signal through verification.
In a fourth aspect, there is provided a method for identifying a BSC apparatus, applied to a second node, the method comprising:
the second node receives second information sent by the first node, wherein the second information is used for indicating the second node to send an excitation signal to BSC equipment; or the second node monitors the first information and acquires the configuration related to the sending of the excitation signal;
the second node sends an excitation signal to the BSC device.
In a fifth aspect, there is provided an apparatus for identifying a BSC device, including:
the first sending unit is used for sending first information, and the first information is used for triggering the BSC equipment to send a first back scattering signal according to the first configuration information;
a first identifying unit for determining an identity of the BSC device transmitting the first backscatter signal.
In a sixth aspect, there is provided an apparatus for identifying a BSC device, including:
a third receiving unit, configured to receive first information, where the first information is used to trigger the BSC device to send a first reverse scattered signal;
And an eighth transmitting unit configured to transmit the first backscatter signal according to the first configuration information.
In a seventh aspect, there is provided an apparatus for identifying a BSC device, including:
a ninth receiving unit for receiving the first backscatter signal and/or the second backscatter signal;
the first feedback unit is used for determining the final result according to the first back scattering signal and/or the second back scattering signal and feeding back the final result to the first node through fifth information; or determining intermediate information according to the first back scattering signal and/or the second back scattering signal, and feeding back the intermediate information to the first node through sixth information;
wherein the final result comprises an identification of the BSC device that sent the first backscatter signal or an identification of the BSC device that sent the first backscatter signal through verification.
In an eighth aspect, there is provided an apparatus for identifying a BSC device, including:
a tenth receiving unit, configured to receive second information sent by the first node, where the second information is used to instruct the second node to send an excitation signal to the BSC device; or the second node monitors the first information and acquires the configuration related to the sending of the excitation signal;
A fourteenth transmitting unit for transmitting the excitation signal to the BSC apparatus.
In a ninth aspect, there is provided a first node comprising a processor and a memory storing a program or instructions executable on said processor, said program or instructions implementing the steps of the method of identifying a BSC device as described in the first aspect when executed by said processor.
In a tenth aspect, a first node is provided, including a processor and a communication interface, where the communication interface is configured to send first information, where the first information is configured to trigger a BSC device to send a first backscatter signal according to first configuration information; the processor is configured to determine an identity of a BSC device that transmitted the first backscatter signal.
In an eleventh aspect, there is provided a BSC apparatus comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the BSC apparatus identification method according to the second aspect.
In a twelfth aspect, a BSC apparatus is provided, including a processor and a communication interface, where the communication interface is configured to receive first information, the first information is configured to trigger the BSC apparatus to send a first backscatter signal, and the processor is configured to send the first backscatter signal according to first configuration information.
In a thirteenth aspect, there is provided a third node comprising a processor and a memory storing a program or instructions executable on said processor, said program or instructions implementing the steps of the method of identifying a BSC device according to the third aspect when executed by said processor.
In a fourteenth aspect, a third node is provided, comprising a processor and a communication interface, wherein the communication interface is configured to receive a first backscatter signal and/or a second backscatter signal; the processor is used for determining a final result according to the first back scattering signal and/or the second back scattering signal, and feeding back the final result to the first node through fifth information; or determining intermediate information according to the first back scattering signal and/or the second back scattering signal, and feeding back the intermediate information to the first node through sixth information; wherein the final result comprises an identification of the BSC device that sent the first backscatter signal or an identification of the BSC device that sent the first backscatter signal through verification.
In a fifteenth aspect, there is provided a second node comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method of identifying a BSC device according to the fourth aspect.
In a sixteenth aspect, a second node is provided, including a processor and a communication interface, where the communication interface is configured to receive second information sent by a first node, where the second information is configured to instruct the second node to send an excitation signal to a BSC device; or monitoring the first information to obtain the configuration related to the sending of the excitation signal; the communication interface is also configured to send an excitation signal to the BSC device.
A seventeenth aspect provides a communication system comprising: the method comprises the steps of a first node, a BSC device, a third node and a second node, wherein the first node is used for executing the steps of the method for identifying the BSC device according to the first aspect, the BSC device is used for executing the steps of the method for identifying the BSC device according to the second aspect, the third node is used for executing the steps of the method for identifying the BSC device according to the third aspect, and the fourth node is used for executing the steps of the method for identifying the BSC device according to the fourth aspect.
An eighteenth aspect provides a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the steps of the method of identifying a BSC device as described in the first aspect, or implement the steps of the method of identifying a BSC device as described in the second aspect, or implement the steps of the method of identifying a BSC device as described in the third aspect, or implement the steps of the method of identifying a BSC device as described in the fourth aspect.
In a nineteenth aspect, there is provided a chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute a program or instructions to implement the method of identifying a BSC device according to the first aspect, or to implement the method of identifying a BSC device according to the second aspect, or to implement the method of identifying a BSC device according to the third aspect, or to implement the method of identifying a BSC device according to the fourth aspect.
In a twentieth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executable by at least one processor to perform the steps of the method of identifying a BSC device according to the first aspect, or to perform the steps of the method of identifying a BSC device according to the second aspect, or to perform the steps of the method of identifying a BSC device according to the third aspect, or to perform the steps of the method of identifying a BSC device according to the fourth aspect.
In the embodiment of the application, the BSC device is triggered to send the first back scattering signal according to the first configuration information, so that the receiving end can determine the identification of the BSC device sending the first back scattering signal by analyzing the first back scattering signal, thereby carrying out parallel identification on a large number of BSC devices, effectively improving the identification efficiency of the BSC device and greatly reducing the overall time cost.
Drawings
Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;
FIG. 2 is a schematic diagram of a monostatic backscatter communication system;
FIG. 3 is a schematic diagram of a bistatic backscatter communication system;
FIG. 4 is a schematic diagram of an exemplary architecture for backscatter communications under a cellular network;
FIG. 5 is a schematic diagram of inventory flow incorporating a contention access mechanism;
fig. 6 is a flowchart of a method for identifying a BSC device according to an embodiment of the present application;
fig. 7 is a second flowchart of a method for identifying a BSC device according to an embodiment of the present application;
fig. 8 is a third flowchart of a method for identifying a BSC device according to an embodiment of the present application;
fig. 9 is a flowchart of a method for identifying a BSC device according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of an identification device of a BSC apparatus according to an embodiment of the present application;
fig. 11 is a second schematic structural diagram of an identification device of a BSC apparatus according to an embodiment of the present application;
fig. 12 is a third schematic structural diagram of an identification device of a BSC apparatus according to an embodiment of the present application;
fig. 13 is a schematic structural diagram of an identification device of a BSC apparatus according to an embodiment of the present application;
fig. 14 is a schematic structural diagram of a communication device according to an embodiment of the present application;
Fig. 15 is a schematic hardware structure of a terminal implementing an embodiment of the present application;
fig. 16 is a schematic hardware structure of a network side device for implementing an embodiment of the present application.
Detailed Description
The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some of the embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.
It is noted that the techniques described in embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) th Generation, 6G) communication system.
Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a home appliance), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. Note that, the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. Access network device 12 may include base stations, WLAN access points, wiFi nodes, etc., which may be referred to as node bs, evolved node bs (enbs), access points, base transceiver stations (Base Transceiver Station, BTSs), radio base stations, radio transceivers, basic service sets (Basic Service Set, BSS), extended service sets (Extended Service Set, ESS), home node bs, home evolved node bs, transmit receive points (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and the base stations are not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiments of the present application, only base stations in the NR system are described by way of example, and the specific types of base stations are not limited. The core network device may include, but is not limited to, at least one of: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), user plane functions (User Plane Function, UPF), policy control functions (Policy Control Function, PCF), policy and charging rules function units (Policy and Charging Rules Function, PCRF), edge application service discovery functions (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data repository (Unified Data Repository, UDR), home subscriber server (Home Subscriber Server, HSS), centralized network configuration (Centralized network configuration, CNC), network storage functions (Network Repository Function, NRF), network opening functions (Network Exposure Function, NEF), local NEF (or L-NEF), binding support functions (Binding Support Function, BSF), application functions (Application Function, AF), and the like. In the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.
The related art to which the present invention relates will be first described.
1. Backscatter communications (Backscatter Communication, BSC)
Backscatter communication refers to the transmission of its own information by a backscatter communication device using radio frequency signals in other devices or environments for signal modulation. A backscatter communication device (hereinafter BSC device) may be:
a) The BSC device in conventional RFID, typically a Tag, belongs to a Passive IoT device (Passive-IoT);
b) Semi-passive (semi-passive) tags, the downstream receiving or upstream reflecting of such tags has a certain amplifying capability;
c) Tag (Active Tag) with active transmission capability, such terminals can send information to a Reader independent of reflection of an incoming signal.
A simple implementation is that when a Tag needs to send a '1', the Tag reflects the incoming carrier signal and when the Tag needs to send a '0', it does not.
The backscatter communication device controls the reflection coefficient Γ of the circuit by adjusting its internal impedance, thereby changing the amplitude, frequency, phase, etc. of the incident signal, effecting modulation of the signal. Wherein the reflection coefficient of the signal can be characterized as:
wherein Z is 0 For the characteristic impedance of the antenna, Z 1 Is the load impedance. Let the incident signal be S in (t) the output signal isThus, by reasonably controlling the reflection coefficient, a corresponding amplitude modulation, frequency modulation or phase modulation can be achieved. The architecture of typical backscatter communications can be divided into single-base systems and dual-base systems.
Fig. 2 is a schematic diagram of a monostatic backscatter communication system, typically a conventional RFID system, including BSC devices (e.g., tags) and readers. The reader/writer includes an RF radio frequency source for generating an excitation signal (also referred to as an RF radio frequency signal, typically a Continuous Wave (CW)) to power the BSC apparatus and provide a carrier Wave, and a BSC receiving end. The BSC equipment modulates and backscatter CW, and the BSC receiving end in the reader-writer receives the backscatter signal and then demodulates the signal. Because the RF source and the BSC receiving end are in the same device, such as a reader-writer herein, it is known as a single-base backscatter communication system. In this system, since the RF radio frequency signal transmitted from the BSC apparatus is subjected to the double near-far effect caused by the signal attenuation of the round trip signal, the energy attenuation of the signal is large, and thus the single-base system is generally used for short-range backscatter communication such as conventional RFID applications.
Unlike the single-base system, the RF source and BSC receiver in the dual-base system are separate, as shown in the schematic diagram of the dual-base backscatter communication system of FIG. 3. Thus, the dual-base system avoids the problem of large round trip signal attenuation, and further improves the performance of the backscatter communication system by reasonably locating the RF source.
2. Backscattering communication system under cellular networking
In cellular networks, backscatter communication systems can be specifically divided into 8 architectures as shown in table 1 and fig. 4 from the differences in RF radio frequency sources, uplink, downlink. Wherein fig. 4 is a schematic diagram of a typical architecture of backscatter communications under cellular networking.
In architecture 1, the base station is an RF radio frequency source at this time, and is also a downlink transmitting end (i.e., a control command transmitting end) of the BSC apparatus and an uplink receiving end (i.e., a BSC receiving end) of the BSC apparatus, that is, the base station directly communicates with the BSC apparatus at this time. (note that this deployment architecture requires high receive sensitivity for base stations and BSC devices, but is simple to deploy).
In architecture 2, the base station is also an RF radio source, but there is now a Relay for relaying the BSC device to the base station's uplink; of course, the Relay may also Relay the downlink of the base station to the BSC device, not illustrated here.
In architecture 3, the UE is used for RF radio sources, downlink and uplink forwarding BSC devices to base stations.
Architecture 3-1a: the base station is an RF radio frequency source, and directly transmits downlink data to BSC equipment; in the uplink, the BSC device sends back scattered signals to the UE and then forwards the signals to the base station by the UE.
Architecture 3-1b: the UE is an RF radio frequency source, and the base station directly transmits downlink data to BSC equipment; in the uplink, the BSC device sends back scattered signals to the UE and then forwards the signals to the base station by the UE.
Architecture 3-2a: the base station is an RF radio frequency source, firstly transmits downlink data to the UE, and then the UE forwards the downlink data to BSC equipment; in the uplink, the BSC apparatus sends back-scattered signals directly to the base station.
Architecture 3-2b: the UE is an RF radio frequency source, the base station firstly transmits downlink data to the UE, and then the downlink data is forwarded to BSC equipment by the UE; in the uplink, the BSC apparatus sends back-scattered signals directly to the base station.
Architecture 3-3a: the base station is an RF radio frequency source, firstly transmits downlink data to the UE, and then the UE forwards the downlink data to BSC equipment; in the uplink, the BSC device sends back scattered signals to the UE, which are forwarded to the base station.
Architecture 3-3b: the UE is an RF radio frequency source, the base station firstly transmits downlink data to the UE, and then the downlink data is forwarded to BSC equipment by the UE; in the uplink, the BSC device sends back scattered signals to the UE, which are forwarded to the base station.
Table 1: exemplary architecture for backscatter communications under cellular networking
3. RFID Tag inventory procedure
RFID is a conventional backscatter communication system, and the main design goal is to identify the ID and read the data of BSC devices (i.e., tags) within the coverage of a reader-writer. Since RFID was originally applied to automated inventory of a large number of goods, the process of identifying tags and reading data is also known as inventory.
Taking an EPC C1G2 RFID system defined by ISO 18000-6C as an example, after a reader sends a Query instruction (Query), a Tag responds back (Reply), taking the Reply as RN16 as an example, and the Tag generates a 16-bit random number and sends the 16-bit random number to the reader. Then, after the sequence is sent to the Tag through the ACK instruction, the Tag verifies the RN16 in the ACK successfully, and then sends the subsequent data (such as Protocol Control (PC), extended Protocol Control (eXtended Protocol Control, XPC), electronic product code (Electronic Product Code, EPC) and the like) to the reader.
Obviously, there may be a plurality of or even a large number of tags within the coverage area of the reader, and if the disk storage flow of a single Tag is directly applied to the scene of a plurality of tags, the situation that the signals collide and cannot be decoded because the plurality of tags simultaneously send the backscatter signals will occur. Thus, to accommodate the scenario of multiple tags, RFID systems typically have competing access mechanisms that manage collisions. Similarly, taking the EPC C1G2 RFID system as an example, fig. 5 shows a schematic disk storage flow diagram combined with a contention access mechanism, and the specific flow is as follows:
1. The reader sends a Select command to Select the Tag to be inventoried;
2. the reader sends a Query command to open a round of inventory, and the Query indicates a Q value;
3. all tags produced one [0,2 Q -1]Random integer within a rangeThe number is taken as an initial value of a counter;
tag checking if the counter is 0;
5a. [ if the counter of the Tag is 0], the Tag with the counter of 0 sends a Reply, and the Reply comprises a randomly generated 16-bit random number and is recorded as RN16;
if the reader/writer decodes the RN16 successfully, the reader/writer sends an acknowledgement ACK command comprising the RN16 and a command field of 2 bits;
the tag receives the ACK and checks whether the RN16 contained in the ACK is the RN16 previously transmitted;
checking that the correct Tag of the RN16 sends data to be reported to the reader/writer, such as PC, XPC, EPC or other data, if the RN16 is correct, the Tag inventory is completed;
[ if RN16 error ] Tag to check RN16 error sets its own counter to maximum;
6b. [ if the reader/writer fails to decode RN16 ] the reader/writer sends a negative acknowledgement NAK command;
9. if the Tag receiving the NAK command sends a Reply at the last adjacent time sequence, setting a self counter to be the maximum value;
5b, [ if the counter without Tag is 0], the reader sends a QueryRep command;
10. The Tag receiving the QueryRep command will itself counter-1;
the [ optional ] reader may send a QueryAdjust command, reconfiguring a Q value;
12. a QueryAdjust command is received and the Tag of the incomplete inventory is again at [0,2 Q -1]Randomly selecting an integer in the range as a counter;
13. repeating the steps 4-12 until all the Tag inventory is completed.
It is known that completing inventory once for all tags requires a significant amount of additional signaling and time overhead in order to resolve the conflict problem, e.g., tags require a wait counter of 0; the RN16 needs to be repeatedly transmitted until the RN16 is correctly and uniquely identified by the reader/writer before the Tag transmits valid data.
In order to solve the problem that when the number of BSC devices is large, the adoption of the competitive access mode is extremely inefficient, so that a large amount of time is required to be consumed for completing the identification of all BSC devices, the embodiment of the application provides an identification method, an identification device and communication equipment of the BSC devices. The following describes in detail, by means of some embodiments and application scenarios thereof, a method and an apparatus for identifying a BSC device and a communication device provided in the embodiments of the present application with reference to the accompanying drawings.
The identification method of the BSC device can be applied to a back-scattering communication system, including RFID, LTE, narrowband Internet of things (Narrow Band Internet of Things, NB-IoT), NR, IEEE 802.11 evolution systems and the like.
Fig. 6 is a flowchart of a method for identifying a BSC device according to an embodiment of the present application. As shown in fig. 6, the identification method of the BSC apparatus includes the steps of:
step 100, a first node transmits first information, wherein the first information is used for triggering BSC equipment to transmit a first back scattering signal according to first configuration information;
it should be noted that the first node may be a base station, a UE, or a dedicated reader/writer.
The BSC devices may be conventional RFID tags, passive/semi-passive/active internet of things (Internet of Things, ioT) devices, etc.
Step 200, the first node determines an identity of a BSC device that transmits the first backscatter signal.
The BSC device receives the first information sent by the first node, sends a first back-scattered signal according to the first configuration information, and the first node receives the first back-scattered signal and determines the identity of the BSC device sending the first back-scattered signal.
According to the BSC equipment identification method, the BSC equipment is triggered to send the first back scattering signals according to the first configuration information by sending the first information, so that the receiving end can determine the identification of the BSC equipment sending the first back scattering signals by analyzing the first back scattering signals, a large number of BSC equipment can be identified in parallel, the BSC equipment identification efficiency is effectively improved, and the overall time cost is greatly reduced.
The identity of the BSC device is information characterizing the identity of the BSC device, and may be uniquely determined, where the manifestation includes, but is not limited to, a factory serial number, a device ID, a user ID, an IP address, a media access control (Media Access Control, MAC) address, a radio network temporary identity (Radio Network Temporary Identity, RNTI), a temporary identity, and the like.
Optionally, the first configuration information is indicated by the first information.
Or, part of the information in the first configuration information is indicated by the first information, and the rest information is in a pre-default configuration.
The first information may directly indicate a specific parameter of the configuration, or may indicate one of preset multiple groups of configurations.
Alternatively, the first configuration information is preconfigured.
Optionally, the first configuration information includes at least one of the following 1) to 4):
1) Information for determining a resource carrying the first backscatter signal;
the information for determining the resource carrying the first backscattered signal is mandatory for the first configuration information.
Optionally, the information for determining the resource carrying the first backscatter signal includes at least one of:
A hash function set;
selecting a sequence number set of an activated hash function from preset or indicated hash function sets;
inputting a field of the hash function, and/or inputting a position of the field of the hash function, and/or inputting a length of a field of the hash function;
rules whether the hash function output value needs to be modified and/or whether the hash function output value needs to be modified;
discarding or reserving rules of the hash function, and/or discarding or reserving rules of the hash function output value, and/or discarding or reserving rules of the bearer resource;
mapping rules of hash function output values and bearing resources, or mapping rules of modified hash function output values and bearing resources;
a preset value;
and presetting bearing resources.
The hash function is a function that maps information (e.g., ID, specific field) of the BSC device to a limited integer range, and examples are: the hash function has a result ranging from 1 to 10 and the bsc device ID is 2222, and after the hash function, the result is any one of 1 to 10, such as 5.
The preset value refers to that the output value of the hash function is directly configured to the BSC device.
2) Defining mode of time domain and/or frequency domain resource;
Optionally, the defining manner of the time domain and/or frequency domain resources includes at least one of the following: definition of time slots, length of time slots, interval of adjacent frequency points, starting position of time domain and/or frequency domain resources, total amount of time slots, total amount of frequency points, time domain and/or frequency domain resource grid, definition of resource sequence numbers or positions.
Wherein, the definition of the time slot can be a fixed length of time; or may be a time of an indefinite length, such as corresponding to one transmission opportunity.
3) Transmitting the power of the first backscatter signal or a parameter related to said power;
such as level, impedance, reflection coefficient, etc.
4) The content and/or format of the first backscatter signal is transmitted.
Such as sequence, length, duration, etc.
It is understood that the first configuration information is used for the BSC apparatus to determine parameters for transmitting the first backscatter signal.
Optionally, the first information further carries at least one of the following synchronization information:
a) Contracted sequences, such as Barker sequences, ZC sequences, and the like.
b) System time information such as system frame number (System frame number, SFN), slot counter, slot sequence number, etc.
c) Separators, such as a start separator, an end separator, etc.
The synchronization information is used to maintain synchronization between the first node and the BSC device.
Optionally, the method further comprises:
the first node sends an excitation signal to BSC equipment; or,
the first node sends second information to the second node, wherein the second information is used for indicating the second node to send an excitation signal to the BSC equipment.
It will be appreciated that the second node is an RF radio frequency source. Alternatively, the second node may be a base station, UE, relay or dedicated reader/writer.
Optionally, the second node may also obtain a configuration related to sending the excitation signal by listening to the first information, and send the excitation signal to the BSC device.
It will be appreciated that the BSC apparatus determines parameters of the first backscatter signal, such as time and/or frequency domain resources carrying the first backscatter signal, based on the first configuration information, and transmits the backscatter signal using the excitation signal provided by the first node or the second node.
Optionally, the method further comprises:
the first node sends third information to the BSC apparatus, the third information indicating the start of the time slot.
Alternatively, the BSC device may autonomously determine the start of each time slot; or, transmitting, by the first node, third information for indicating the start of the slot.
Optionally, the step 200 includes a step 201 and a step 202, wherein,
step 201, the first node receives the first back-scattered signal, and determines time domain and/or frequency domain resources occupied by the first back-scattered signal;
optionally, the receiving the first backscatter signal, determining a time domain and/or frequency domain resource occupied by the first backscatter signal, includes:
receiving the first backscatter signals on candidate time and/or frequency domain resources, measuring signal quality on each candidate time and/or frequency domain resource;
and determining time domain and/or frequency domain resources occupied by the first back-scattered signal based on the signal quality.
Optionally, candidate time-domain and/or frequency-domain resources with signal quality greater than or equal to a first threshold are determined as time-domain and/or frequency-domain resources occupied by the first backscatter signal.
Wherein the candidate time domain and/or frequency domain resources may be configured within the first configuration information or default.
The first backscatter signal is received on candidate time and/or frequency domain resources, and signal quality, such as reference signal received power (Reference Signal Receiving Power, RSRP), reference signal received quality (Reference Signal Received Quality, RSRQ), etc., is measured on each candidate time and/or frequency domain resource.
The signal quality on each candidate time and/or frequency domain resource is compared to a first threshold to determine whether a backscattered signal is present on each candidate time and/or frequency domain resource. And determining candidate time domain and/or frequency domain resources with the signal quality greater than or equal to a first threshold value as the time domain and/or frequency domain resources occupied by the first back scattering signal.
Optionally, the first threshold is determined using at least one of:
determining based on the history;
occupying additional time domain and/or frequency domain resource determinations.
Several methods for determining the first threshold are described below, and the specific procedures are as follows:
case 1: single base architecture (base station only)
1. The base station indicates the BSC equipment not to send signals;
2. the base station transmits CW;
3. the base station measures the channel received signal power at the frequency at which the BSC device transmits the first back-scattered signal, and may take the instantaneous value or statistics (e.g., average) of a plurality of instantaneous values as a first threshold;
for the case of multiple frequency points, the base station needs to measure the channel received signal power at each frequency point as a first threshold for determining whether the first backscatter signal exists at each frequency point.
Case 2: cellular networking architecture (including base station, UE, relay)
4. The base station indicates the BSC equipment not to send signals;
5. the base station instructs the UE to transmit CW;
6. the base station instructs the relay to measure the channel received signal power at the frequency at which the BSC device transmits the first backscatter signal, and may take the instantaneous value or statistics (e.g., average) of the instantaneous values as the first threshold;
for the case of multiple frequency points, the relay needs to measure the channel received signal power at each frequency point as a first threshold for determining whether the first backscatter signal exists at each frequency point
7. The relay indicates the first threshold determined in step 6 to the base station.
Step 202, the first node determines, according to the time domain and/or frequency domain resources occupied by the first backscatter signal, an identity of a BSC device that transmits the first backscatter signal.
In the embodiment of the invention, the first node can identify the identity of the BSC equipment by analyzing the time domain and/or frequency domain resources occupied by the first back scattering signal, so that a large number of BSC equipment can be identified in parallel, the identification efficiency of the BSC equipment can be effectively improved, and the overall time cost is greatly reduced.
In an alternative embodiment, the step 202 includes:
step 2021a, mapping the time domain and/or frequency domain resources occupied by the first backscatter signal to an output value and/or a modified output value of the hash function, to obtain a first output value;
After obtaining the first output value, matching from the identities of the existing BSC devices according to the first output value, and determining the identity of the BSC device which sends the first back scattering signal.
Step 2022a, inputting the identifier of the existing BSC device into a hash function, to obtain an output value and/or a modified output value of the hash function corresponding to the identifier of the existing BSC device; or determining a preset value corresponding to the identification of the existing BSC equipment; the identification of the existing BSC equipment is the pre-stored identification of the BSC equipment;
and (3) recording the output value and/or the modified output value of the hash function corresponding to the identification of the existing BSC equipment or a preset value as a second output value.
Step 2023a, for each of the identities of the existing BSC devices, performs the following steps: determining the identity of the BSC equipment which is currently identified to send the first back scattering signal under the condition that the output value of the hash function corresponding to the current identity and/or the modified output value or the preset value are completely contained in the first output value; or determining that the current identifier does not belong to the identifier of the BSC device sending the first back scattering signal under the condition that the output value of the hash function corresponding to the current identifier and/or the modified output value or the preset value are not completely contained in the first output value.
In the embodiment of the present application, the idea of the bloom filter is referred to, and when the bloom filter is set to 1 by the hash function of more than 1 object, the corresponding bit is also 1. That is, each bit has only "not set by any object by 1" or "set by at least 1 object by 1".
It should be noted that, in the BSC scenario considered in this embodiment, if more than or equal to 1 BSC device (i.e. the object described above) transmits a backscatter signal on the same time domain and/or frequency domain resource, it is easy to know whether the signal is present (e.g. RSRP is measured) although the signal may not be successfully decoded, so that a bloom filter is naturally formed by setting the bit position corresponding to this resource to 1.
And determining the identity of the BSC equipment currently identified to send the first back scattering signal under the condition that the output value of the hash function corresponding to the current identity and/or the modified output value or the preset value are completely contained in the first output value.
In case the output value of the hash function and/or the modified output value or the preset value corresponding to the current identity is not completely comprised in the first output value, it may be determined that the current identity does not belong to the identity of the BSC device transmitting the first backscatter signal.
The above-described determination process is performed for each of the identities of the existing BSC devices, thereby determining the identity of at least one BSC device that transmitted the first backscatter signal.
In another alternative embodiment, the step 202 includes:
step 2021b, determining the bearer resources of the backscatter signal corresponding to the identifier of the existing BSC device, where the identifier of the existing BSC device is a prestored identifier of the BSC device;
optionally, mapping a second output value corresponding to each of the identities of the existing BSC devices to a bearer resource of the first reverse-scattered signal; or, determining the bearing resource of the first back scattering signal corresponding to each of the identifications of the existing BSC equipment.
Step 2022b, for each of the identities of the existing BSC devices, performs the following steps: determining the identity of BSC equipment which is currently identified as transmitting the first back scattering signal under the condition that the bearing resources of the back scattering signal corresponding to the current identity are completely contained in the time domain and/or frequency domain resources occupied by the first back scattering signal; or determining that the current identifier does not belong to the identifier of the BSC device for transmitting the first back scattering signal under the condition that the bearing resource of the back scattering signal corresponding to the current identifier is not completely contained in the time domain and/or frequency domain resource occupied by the first back scattering signal.
And determining the identity of BSC equipment currently identified as transmitting the first back scattering signal under the condition that the bearing resources of the back scattering signal corresponding to the current identity are completely contained in the time domain and/or frequency domain resources occupied by the first back scattering signal.
And determining that the current identifier does not belong to the identifier of the BSC equipment for transmitting the first back scattering signal under the condition that the bearing resource of the back scattering signal corresponding to the current identifier is not completely contained in the time domain and/or frequency domain resource occupied by the first back scattering signal.
The above-described determination process is performed for each of the identities of the existing BSC devices, thereby determining the identity of at least one BSC device that transmitted the first backscatter signal.
In the embodiment of the invention, the time domain and/or frequency domain resources occupied by the first back scattering signal are analyzed by a hash operation or resource mapping mode, so that the identification of BSC equipment can be effectively identified, a large number of BSC equipment can be identified in parallel, the identification efficiency of the BSC equipment can be effectively improved, and the overall time cost is greatly reduced.
Optionally, in order to more accurately identify the identity of at least one BSC device that transmits the first backscatter signal, on the basis of the two embodiments described above, the method further comprises, for each of the identities of the existing BSC devices, after performing the following steps, i.e. after step 2023a or step 2022 b:
The first node sends fourth information to BSC equipment corresponding to each identifier in a first identifier set, wherein the fourth information is used for triggering BSC equipment corresponding to each identifier in the first identifier set to send a second back-scattered signal, and the first identifier set comprises identifiers of at least one BSC equipment for sending the first back-scattered signal;
the first node receives the second back-scattered signal, and determines the identification of at least one BSC device for transmitting the second back-scattered signal according to the resources and/or the content and/or the format occupied by the second back-scattered signal;
the first node uses the identity of at least one BSC device transmitting the second backscatter signal as an identity of a verified BSC device transmitting the first backscatter signal.
It will be appreciated that the first set of identifications is the result of either step 2023a or step 2022 b.
In the embodiment of the present application, the first node sends the fourth information to the BSC devices corresponding to each identifier in the first identifier set, so as to trigger each BSC device to send the second backscatter signal, thereby performing further verification on the first identifier set according to the received second backscatter signal, and improving the accuracy of identifying the BSC devices.
After receiving the second back scattering signal, the first node determines the identification of at least one BSC device sending the second back scattering signal according to the resources and/or content and/or format occupied by the second back scattering signal, and marks the identification as a second identification set, wherein the identification in the second identification set is the identification of the BSC device sending the first back scattering signal through verification.
Optionally, the fourth information includes at least one of:
at least one identifier in the first set of identifiers;
the power or power-related parameter of the transmitted second backscatter signal, such as level, impedance, reflection coefficient, etc.;
the content and/or format of the transmitted second backscatter signal, such as fields carried, sequences, lengths, durations, etc.;
a resource that transmits a second backscatter signal;
resources reserved for BSC devices for uplink and/or downlink data transmission.
Optionally, the first node sends fourth information to the BSC, so that the BSC apparatus determines parameters related to sending the second backscatter signal according to the fourth information, and sends the second backscatter signal according to the determined parameters.
In another alternative embodiment, the step 200 includes:
The first node receives a final result fed back by the third node through fifth information, where the final result is determined by the third node to be the identity of the BSC device transmitting the first backscatter signal or the identity of the BSC device transmitting the first backscatter signal through verification.
Alternatively, the above steps 201 and 202 may be performed by a third node. The third node may be a base station, a UE or a dedicated reader/writer, separate from the first node.
If both the above steps 201 and 202 are performed by the third node, after the third node obtains the final result of sending the final result, where the final result includes the identification of the BSC apparatus that sends the first backscatter signal or the identification of the BSC apparatus that sends the first backscatter signal through verification, the final result is fed back to the first node through the fifth information.
Optionally, before the step 200, the method further includes:
the first node sends seventh information to the third node, the seventh information being indicative of relevant configuration information for receiving and processing the first back-scattered signal or/and the second back-scattered signal.
Optionally, the relevant configuration information includes at least one of: all or part of the first configuration information, the identity of the existing BSC device, and fourth information.
It will be appreciated that the third node needs to know the relevant configuration information to receive and process the first back-scattered signal or and/or the second back-scattered signal before the third node can perform steps 201 and 202 to obtain the final result.
The third node obtains relevant configuration information for receiving and processing the first back-scattered signal or/and the second back-scattered signal by at least one of:
the first node indicates to the third node through the seventh information;
the third node monitors the first information and/or the fourth information;
default configuration agreed in advance.
Alternatively, the above steps 201 and 202 may be performed cooperatively by the first node and the third node. In another alternative embodiment, the step 200 includes:
the first node receives intermediate information fed back by a third node through sixth information, wherein the intermediate information is determined by the third node based on the received first back scattering signal and/or second back scattering signal;
and the first node determines the identification of BSC equipment for transmitting the first back scattering signal according to the intermediate information.
In this embodiment, the third node determines intermediate information based on the received first backscatter signal and/or the second backscatter signal, and the first node determines, according to the intermediate information determined by the third node, an identity of the BSC device that transmits the first backscatter signal.
Optionally, the intermediate information includes at least one of: signal quality on each candidate time-domain and/or frequency-domain resource, the time-domain and/or frequency-domain resource occupied by the first backscatter signal, the first output value, the resource and/or content and/or format occupied by the second backscatter signal.
Optionally, before the step 200, the method further includes:
the first node sends seventh information to the third node, the seventh information being indicative of relevant configuration information for receiving and processing the first back-scattered signal or/and the second back-scattered signal.
Optionally, the relevant configuration information includes at least one of: all or part of the first configuration information, the identity of the existing BSC device, and fourth information.
The third node obtains relevant configuration information for receiving and processing the first back-scattered signal or/and the second back-scattered signal by at least one of:
the first node indicates to the third node through the seventh information;
the third node monitors the first information and/or the fourth information;
default configuration agreed in advance.
Optionally, the first information is further used to indicate information of BSC devices participating in the identification.
Optionally, the information of the BSC devices participating in the identification includes: a mask and/or length and/or field for matching at least one of ID, EPC, PC/XPC, internal memory specific location content and sensor results.
Optionally, the method further comprises:
the first node sends eighth information to the BSC equipment, wherein the eighth information is used for triggering the BSC equipment to register or de-register;
and the first node receives ninth information sent by the BSC equipment, wherein the ninth information is used for indicating the registration information or the deregistration information of the BSC equipment.
Optionally, the method further comprises: in the case that the BSC device is triggered to register or deregister by an excitation signal sent by the first node or the second node, the first node receives ninth information sent by the BSC device, where the ninth information is used to indicate the registration information or the deregistration information of the BSC device.
It will be appreciated that in one embodiment, the BSC apparatus receives the eighth information sent by the first node, performs registration or deregistration, and in another embodiment, the BSC apparatus is triggered to perform registration or deregistration by an excitation signal sent by the first node or the second node, and the BSC apparatus performs registration or deregistration by sending the ninth information to the first node.
Optionally, the ninth information includes at least one of:
indication information of BSC equipment registration or residence;
indication information of the BSC equipment to register or leave;
BSC device model;
identification of the BSC device;
the frequencies and/or ranges and/or sets of frequencies that the BSC device may use;
the number and/or range and/or combination of frequencies that the BSC device may use simultaneously;
the time range and/or optional set of times that the BSC device transmits the backscatter signal;
defining mode of time domain and/or frequency domain resource supported by BSC equipment, such as defining mode of time domain and/or frequency domain resource in the first configuration information;
the BSC device transmits the maximum and/or minimum power of the backscatter signal, and/or, optionally, a set of powers;
a set of available impedances and/or a set of reflection coefficients for the BSC device;
the BSC device receives signal quality measurements of the excitation signal or seventh information, such as RSRP, RSRQ, signal-to-interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR), etc.
Optionally, before the step 200, the method further includes:
receiving tenth information sent by the BSC equipment, wherein the tenth information is used for indicating at least one of the following:
a reserved or discarded hash function set or hash function sequence number set;
Modification rules of hash function output values;
a modified hash function output value;
and the mapping mode of the hash function output value and the bearing resource and/or the modified mapping mode of the hash function output value and the bearing resource.
It will be appreciated that after the BSC apparatus acquires the first configuration information, it negotiates with the first node about the contents of the tenth information.
Optionally, the method further comprises:
the first node transmits updated first configuration information to the BSC device during the transmission of the first backscatter signal by the BSC device.
The BSC device then transmits the first backscatter signal using the updated first configuration information.
Optionally, the first, third, eighth and fourth information may be included in at least one of dedicated control command, radio resource control (Radio Resource Control, RRC) signaling, medium access control layer control element (Media Access Control Control Unit, MAC CE), downlink control information (Downlink Control Information, DCI), bypass control information (Sidelink control information, SCI), physical frame preamble, etc., and may be carried by at least one of dedicated radio signal waveform (such as a PIE-encoded ASK modulated signal), physical downlink shared channel (Physical Downlink Shared Channel, PDSCH), physical downlink control channel (Physical Downlink Control Channel, PDCCH), physical bypass control channel (Physical Sidelink Control Channel, PSCCH), physical bypass shared channel (Physical Sidelink Shared Channel, PSSCH), physical frame.
Optionally, ninth and tenth information may be included in at least one signaling selected from dedicated control command, RRC signaling, MAC CE, uplink control information (Uplink Control Information, UCI), SCI, physical frame preamble, etc., and may be carried by at least one of dedicated wireless signal waveform (e.g. OOK modulated backscatter signal), physical uplink shared channel (Physical Uplink Shared Channel, PUSCH), physical uplink control channel (Physical Uplink Control Channel, PUCCH), PSCCH, PSSCH, physical frame
Optionally, the second, fifth to seventh information may be included in at least one of RRC signaling, MAC CE, DCI, UCI, SCI, etc., and may be carried in at least one manner PDSCH, PUSCH, PDCCH, PUCCH, PSCCH, PSSCH.
Fig. 7 is a second flowchart of a method for identifying a BSC device according to an embodiment of the present application. As shown in fig. 7, the execution subject of the method is a BSC apparatus, which includes the following steps:
step 300, the BSC equipment receives first information, wherein the first information is used for triggering the BSC equipment to send a first reverse scattered signal;
step 400, the BSC device sends a first backscatter signal according to the first configuration information.
The BSC devices may be conventional RFID tags, passive/semi-passive/active IoT devices, etc. The BSC device receives the first information and sends a first backscatter signal according to the first configuration information.
Optionally, the first configuration information is indicated by the first information.
Or, part of the information in the first configuration information is indicated by the first information, and the rest information is in a pre-default configuration.
The first information may directly indicate a specific parameter of the configuration, or may indicate one of preset multiple groups of configurations.
Alternatively, the first configuration information is preconfigured.
Optionally, the first configuration information includes at least one of the following 1) to 4):
1) Information for determining a resource carrying the first backscatter signal;
the information for determining the resource carrying the first backscattered signal is mandatory for the first configuration information.
Optionally, the information for determining the resource carrying the first backscatter signal includes at least one of:
a hash function set;
selecting a sequence number set of an activated hash function from preset or indicated hash function sets;
inputting a field of the hash function, and/or inputting a position of the field of the hash function, and/or inputting a length of a field of the hash function;
rules whether the hash function output value needs to be modified and/or whether the hash function output value needs to be modified;
Discarding or reserving rules of the hash function, and/or discarding or reserving rules of the hash function output value, and/or discarding or reserving rules of the bearer resource;
mapping rules of hash function output values and bearing resources, or mapping rules of modified hash function output values and bearing resources;
a preset value;
and presetting bearing resources.
The hash function is a function that maps information (e.g., ID, specific field) of the BSC device to a limited integer range, and examples are: the hash function has a result ranging from 1 to 10 and the bsc device ID is 2222, and after the hash function, the result is any one of 1 to 10, such as 5.
The preset value refers to that the output value of the hash function is directly configured to the BSC device.
2) Defining mode of time domain and/or frequency domain resource;
optionally, the defining manner of the time domain and/or frequency domain resources includes at least one of the following: definition of time slots, length of time slots, interval of adjacent frequency points, starting position of time domain and/or frequency domain resources, total amount of time slots, total amount of frequency points, time domain and/or frequency domain resource grid, definition of resource sequence numbers or positions.
Wherein, the definition of the time slot can be a fixed length of time; or may be a time of an indefinite length, such as corresponding to one transmission opportunity.
3) Transmitting the power of the first backscatter signal or a parameter related to said power;
such as level, impedance, reflection coefficient, etc.
4) The content and/or format of the first backscatter signal is transmitted.
Such as sequence, length, duration, etc.
It is understood that the first configuration information is used for the BSC apparatus to determine parameters for transmitting the first backscatter signal.
Optionally, the first information further carries at least one of the following synchronization information:
a) Contracted sequences, such as Barker sequences, ZC sequences, and the like.
b) System time information such as system frame number SFN, slot counter, slot number, etc.
c) Separators, such as a start separator, an end separator, etc.
The synchronization information is used to maintain synchronization between the first node and the BSC device.
Optionally, the BSC apparatus sends a first backscatter signal according to the first configuration information, including:
the BSC equipment determines parameters of a first back scattering signal according to the first configuration information;
and transmitting a first back scattering signal according to the parameter of the first back scattering signal by using an excitation signal transmitted by the first node or the second node.
Optionally, the method further comprises:
and receiving an excitation signal sent by the first node or the second node.
It will be appreciated that the second node is an RF radio frequency source. Alternatively, the second node may be a base station, UE, relay or dedicated reader/writer.
Optionally, the first node sends an excitation signal to the BSC device; or,
the first node sends second information to the second node, the second information is used for indicating the second node to send an excitation signal to the BSC equipment
Optionally, the second node may also obtain a configuration related to sending the excitation signal by listening to the first information, and send the excitation signal to the BSC device.
It will be appreciated that the BSC apparatus determines parameters of the first backscatter signal, such as time and/or frequency domain resources carrying the first backscatter signal, based on the first configuration information, and transmits the backscatter signal using the excitation signal provided by the first node or the second node.
Optionally, the method further comprises:
the BSC device determines the beginning of a time slot; or,
and receiving third information sent by the first node, wherein the third information is used for indicating the beginning of a time slot.
Alternatively, the BSC device may autonomously determine the start of each time slot; or, transmitting, by the first node, third information for indicating the start of the slot.
Optionally, in order to more accurately identify the identity of the at least one BSC device transmitting the first backscatter signal, the method further comprises:
receiving fourth information, wherein the fourth information is used for triggering BSC equipment corresponding to each identifier in a first identifier set to send a second back-scattered signal, and the first identifier set comprises at least one identifier of the BSC equipment sending the first back-scattered signal;
a second backscatter signal is transmitted.
It will be appreciated that by sending fourth information to the BSC devices corresponding to each identifier in the first set of identifiers, each of the BSC devices is triggered to send a second backscatter signal, so that the first set of identifiers may be further verified based on the received second backscatter signal. The first node sends fourth information to BSC devices corresponding to all the identifications in the first identification set to trigger each BSC device to send second back scattering signals, so that the first node can further check the first identification set according to the received second back scattering signals.
Optionally, the fourth information includes at least one of:
at least one identifier in the first set of identifiers;
The power or power-related parameter of the transmitted second backscatter signal, such as level, impedance, reflection coefficient, etc.;
the content and/or format of the transmitted second backscatter signal, such as fields carried, sequences, lengths, durations, etc.;
a resource that transmits a second backscatter signal;
resources reserved for BSC devices for uplink and/or downlink data transmission.
Optionally, the BSC apparatus determines a parameter related to transmitting the second backscatter signal according to the fourth information, and transmits the second backscatter signal according to the determined parameter.
Optionally, the method further comprises:
receiving eighth information sent by the first node, wherein the eighth information is used for triggering BSC equipment to register or deregister;
and transmitting ninth information to the first node, wherein the ninth information is used for indicating registration information or deregistration information of the BSC device.
It will be appreciated that in one embodiment, the BSC device receives a trigger from the first node for registration or de-registration.
Optionally, the method further comprises:
and in the case that the BSC equipment is triggered to register or deregister by an excitation signal sent by the first node or the second node, transmitting ninth information to the first node, wherein the ninth information is used for indicating the registration information or the deregistration information of the BSC equipment.
In another embodiment, the BSC apparatus is triggered to register or deregister by an excitation signal transmitted from the first node or the second node, and the BSC apparatus registers or deregisters by transmitting ninth information to the first node.
Optionally, the ninth information includes at least one of:
indication information of BSC equipment registration or residence;
indication information of the BSC equipment to register or leave;
BSC device model;
identification of the BSC device;
the frequencies and/or ranges and/or sets of frequencies that the BSC device may use;
the number and/or range and/or combination of frequencies that the BSC device may use simultaneously;
the time range and/or optional set of times that the BSC device transmits the backscatter signal;
defining mode of time domain and/or frequency domain resource supported by BSC equipment, such as defining mode of time domain and/or frequency domain resource in the first configuration information;
the BSC device transmits the maximum and/or minimum power of the backscatter signal, and/or, optionally, a set of powers;
a set of available impedances and/or a set of reflection coefficients for the BSC device;
the BSC apparatus receives the excitation signal or the signal quality measurement value of the seventh information, such as RSRP, RSRQ, SINR.
Optionally, after the BSC device receives the first information, the method further includes:
Transmitting tenth information to the first node;
wherein the tenth information is used to indicate at least one of:
a reserved or discarded hash function set or hash function sequence number set;
modification rules of hash function output values;
a modified hash function output value;
and the mapping mode of the hash function output value and the bearing resource and/or the modified mapping mode of the hash function output value and the bearing resource.
It will be appreciated that after the BSC apparatus acquires the first configuration information, it negotiates with the first node about the contents of the tenth information.
Optionally, the method further comprises:
and in the process of sending the first back scattering signal by the BSC equipment, receiving updated first configuration information sent by the first node or the second node.
The BSC device then transmits the first backscatter signal using the updated first configuration information.
Optionally, the first, third, eighth and fourth information may be included in at least one signaling selected from dedicated control command, RRC signaling, MAC CE, DCI, SCI, physical frame preamble, etc., and may be carried by at least one mode selected from dedicated radio signal waveform (such as a PIE-encoded ASK modulation signal), PDSCH, PDCCH, PSCCH, PSSCH, physical frame
Optionally, ninth and tenth information may be included in at least one signaling selected from dedicated control command, RRC signaling, MAC CE, UCI, SCI, physical frame preamble, etc., and may be carried by at least one mode selected from dedicated wireless signal waveform (e.g. OOK modulated backscatter signal), PUSCH, PUCCH, PSCCH, PSSCH, physical frame
Optionally, the second, fifth to seventh information may be included in at least one of RRC signaling, MAC CE, DCI, UCI, SCI, etc., and may be carried in at least one manner PDSCH, PUSCH, PDCCH, PUCCH, PSCCH, PSSCH.
The embodiment of the application provides a BSC equipment identification method, which defines a back scattering signal transmission mode allowing overlapping on time domain and/or frequency domain resources, so that a receiving end can identify the BSC equipment identification by analyzing the time domain and/or frequency domain resources occupied by the back scattering signals, thereby carrying out parallel identification on a large number of BSC equipment, effectively improving the BSC equipment identification efficiency and greatly reducing the overall time cost.
Fig. 8 is a third flowchart of a method for identifying a BSC device according to an embodiment of the present application. As shown in fig. 8, the execution body of the method is a third node, and as shown in fig. 8, the method includes:
Step 500, the third node receives the first back-scattered signal and/or the second back-scattered signal;
the third node may be a base station, a UE or a dedicated reader/writer, separate from the first node.
Step 600, determining a final result according to the first back scattering signal and/or the second back scattering signal, and feeding back the final result to the first node through fifth information; or determining intermediate information according to the first back-scattered signal and/or the second back-scattered signal, and feeding back the intermediate information to the first node through sixth information.
It will be appreciated that in an alternative embodiment, the third node performs receiving the first and/or second backscatter signals, determining a final result from the first and/or second backscatter signals, the final result being the identity of the BSC device transmitting the first backscatter signal or the identity of the BSC device transmitting the first backscatter signal determined by the third node through verification. And the third node feeds back the final result to the first node through fifth information
In another alternative embodiment, the first node and the third node cooperate to effect identification of the identity of the BSC device. And the third node determines intermediate information according to the first back scattering signal and/or the second back scattering signal, and feeds back the intermediate information to the first node through sixth information.
Wherein the intermediate information includes at least one of: signal quality on each candidate time-domain and/or frequency-domain resource, the time-domain and/or frequency-domain resource occupied by the first backscatter signal, the first output value, the resource and/or content and/or format occupied by the second backscatter signal; the first output value is an output value and/or a modified output value of mapping time domain and/or frequency domain resources occupied by the first backscatter signal into a hash function.
Optionally, the determining the final result according to the first back-scattered signal and/or the second back-scattered signal includes;
receiving the first back scattering signal, and determining time domain and/or frequency domain resources occupied by the first back scattering signal;
and determining the identification of BSC equipment for transmitting the first back scattering signal according to the time domain and/or frequency domain resources occupied by the first back scattering signal.
According to the method and the device, the identification of the BSC equipment can be identified by analyzing the time domain and/or frequency domain resources occupied by the first back scattering signal, so that a large number of BSC equipment can be identified in parallel, the identification efficiency of the BSC equipment can be effectively improved, and the overall time cost is greatly reduced.
Optionally, the receiving the first backscatter signal, determining a time domain and/or frequency domain resource occupied by the first backscatter signal, including;
receiving the first backscatter signals on candidate time and/or frequency domain resources, measuring signal quality on each candidate time and/or frequency domain resource;
and determining time domain and/or frequency domain resources occupied by the first backscatter signal based on the signal quality.
Wherein the candidate time domain and/or frequency domain resources may be configured within the first configuration information or default.
Optionally, the first backscatter signal is received on candidate time and/or frequency domain resources, and the signal quality, e.g. RSRP, RSRQ, on each candidate time and/or frequency domain resource is measured.
The signal quality on each candidate time and/or frequency domain resource is compared to a first threshold to determine whether a backscattered signal is present on each candidate time and/or frequency domain resource. And determining candidate time domain and/or frequency domain resources with the signal quality greater than or equal to a first threshold value as the time domain and/or frequency domain resources occupied by the first back scattering signal.
According to the method and the device, the identification of the BSC equipment can be identified by analyzing the time domain and/or frequency domain resources occupied by the first back scattering signal, so that a large number of BSC equipment can be identified in parallel, the identification efficiency of the BSC equipment can be effectively improved, and the overall time cost is greatly reduced.
Optionally, the first threshold is determined using at least one of:
determining based on the history;
occupying additional time domain and/or frequency domain resource determinations.
The method for determining the first threshold may refer to the description in the foregoing embodiments, and will not be repeated herein.
Optionally, the determining, according to the time domain and/or frequency domain resources occupied by the first backscatter signal, the identity of the BSC device that sends the first backscatter signal includes:
mapping the time domain and/or frequency domain resources occupied by the first backscatter signal into output values of a hash function and/or modified output values to obtain a first output value;
inputting the identification of the existing BSC equipment into a hash function to obtain an output value and/or a modified output value of the hash function corresponding to the identification of the existing BSC equipment; or determining a preset value corresponding to the identification of the existing BSC equipment; the identification of the existing BSC equipment is the pre-stored identification of the BSC equipment;
for each of the identities of the existing BSC devices, performing the steps of: determining the identity of the BSC equipment which is currently identified as sending the first back scattering signal under the condition that the output value of the hash function corresponding to the current identity and/or the modified output value or the preset value are completely contained in the first output value; or determining that the current identifier does not belong to the identifier of the BSC device sending the first back scattering signal under the condition that the output value of the hash function corresponding to the current identifier and/or the modified output value or the preset value are not completely contained in the first output value.
Optionally, the determining, according to the time domain and/or frequency domain resources occupied by the first backscatter signal, the identity of the BSC device that sends the first backscatter signal includes at least one of the following:
determining the bearing resource of a backscatter signal corresponding to the identification of the existing BSC equipment, wherein the identification of the existing BSC equipment is the pre-stored identification of the BSC equipment;
for each of the identities of the existing BSC devices, performing the steps of: under the condition that the bearing resources of the backscatter signals corresponding to the current identifier are completely contained in the time domain and/or frequency domain resources occupied by the first backscatter signals, determining the identifier of BSC equipment which is currently identified to transmit the first backscatter signals; or determining that the current identifier does not belong to the identifier of the BSC device for transmitting the first back scattering signal under the condition that the bearing resource of the back scattering signal corresponding to the current identifier is not completely contained in the time domain and/or frequency domain resource occupied by the first back scattering signal.
Optionally, after the following steps are performed for each of the identities of the existing BSC apparatuses, determining a final result according to the first backscatter signal and/or the second backscatter signal, and further including:
The third node sends fourth information to BSC equipment corresponding to each identifier in a first identifier set, wherein the fourth information is used for triggering BSC equipment corresponding to each identifier in the first identifier set to send a second back-scattered signal, and the first identifier set comprises identifiers of at least one BSC equipment for sending the first back-scattered signal;
receiving the second back scattering signal, and determining the identification of at least one BSC device for transmitting the second back scattering signal according to the resources and/or the content and/or the format occupied by the second back scattering signal;
the identity of at least one BSC device transmitting the second backscatter signal is taken as the identity of the BSC device transmitting the first backscatter signal through verification.
Optionally, the method further comprises:
the third node obtains relevant configuration information for receiving and processing the first back-scattered signal or and/or the second back-scattered signal by at least one of:
receiving seventh information sent by the first node, wherein the seventh information is used for indicating relevant configuration information for receiving and processing the first back scattering signal or/and the second back scattering signal;
Monitoring first information and/or third information;
a pre-agreed manner.
Optionally, the relevant configuration information includes at least one of: all or part of the first configuration information, the identity of the existing BSC device, and fourth information.
Optionally, the intermediate information includes at least one of: signal quality on each candidate time-domain and/or frequency-domain resource, the time-domain and/or frequency-domain resource occupied by the first backscatter signal, the first output value, the resource and/or content and/or format occupied by the second backscatter signal.
Optionally, the fourth information may be included in at least one signaling of dedicated control command, RRC signaling, MAC CE, DCI, SCI, physical frame preamble, etc., and may be carried by at least one mode of dedicated radio signal waveform (such as a PIE-encoded ASK modulation signal), PDSCH, PDCCH, PSCCH, PSSCH, and physical frame.
Optionally, the fifth to seventh information may be included in at least one of RRC signaling, MAC CE, DCI, UCI, SCI, etc., and may be carried in at least one manner PDSCH, PUSCH, PDCCH, PUCCH, PSCCH, PSSCH.
Fig. 9 is a flowchart illustrating a method for identifying a BSC device according to an embodiment of the present application. As shown in fig. 9, the execution body of the method is a second node, and as shown in fig. 9, the method includes:
Step 700, a second node receives second information sent by a first node, wherein the second information is used for indicating the second node to send an excitation signal to BSC equipment; or the second node monitors the first information and acquires the configuration related to the sending of the excitation signal;
step 800, the second node sends an excitation signal to the BSC device.
It will be appreciated that the second node is an RF radio frequency source. Alternatively, the second node may be a base station, UE, relay or dedicated reader/writer.
Optionally, the second node receives second information sent by the first node, where the second information is used to instruct the second node to send an excitation signal to the BSC device.
Optionally, the second node may also obtain a configuration related to sending the excitation signal by listening to the first information, and send the excitation signal to the BSC device.
Optionally, the method further comprises:
and the second node sends an excitation signal for triggering the BSC equipment to register or deregister to the BSC equipment.
Optionally, the method further comprises:
and in the process that the BSC equipment transmits the first back-scattered signal, the second node transmits updated first configuration information to the BSC equipment. The BSC device then transmits the first backscatter signal using the updated first configuration information.
Optionally, the second information may be included in at least one of RRC signaling, MAC CE, DCI, UCI, SCI, etc., and may be carried in at least one manner PDSCH, PUSCH, PDCCH, PUCCH, PSCCH, PSSCH.
In the embodiment of the application, the excitation signal is provided by the second node, so that the BSC equipment transmits the back-scattering signal, and the control command sender and/or the back-scattering signal receiving end can identify the identity of the BSC equipment by analyzing the time domain and/or frequency domain resources occupied by the first back-scattering signal, thereby being capable of identifying a large number of BSC equipment in parallel, effectively improving the identification efficiency of the BSC equipment and greatly reducing the overall time cost.
The control command sender (first node), RF radio frequency source (second node), back scattering signal receiving end (third node) and BSC equipment are decoupled, and the control command sender can be used in the single-base and double-base systems and all architectures under the cellular networking.
The method for identifying the BSC device provided in the present application is further described in the following by several specific embodiments.
Example 1
Considering that the scheme of the present application is implemented in the EPC C1G2 RFID system defined in the existing ISO 18000-6C, the first, second and third nodes are the same RFID reader/writer (hereinafter referred to as reader/writer), and the BSC device is an RFID Tag (hereinafter referred to as Tag).
The specific flow of this embodiment is as follows:
the initialization flow is as follows:
step 1, presetting K fields in all Tag storages in the coverage area of a reader-writer, wherein the values are respectively m 1 ,m 2 ,… m K . M of each Tag 1 ,m 2 ,…m K Different values, and m k ∈{1,...,M}，
And 2, storing K fields of all the tags and the corresponding relation between the K fields and the Tag identification by the reader-writer.
And 3, constructing a bitmap with the length of M by the reader-writer, and marking the bitmap as B. Wherein, B (m) represents the value of the mth bit of the bitmap, and the initial value is 0.
Identification flow (M inventory process is needed, M < th > is taken as an example):
and step 4, the reader-writer sends K Select commands to all the tags, and the tags with at least one field equal to m in the K fields in the storage are selected to participate in the current mth inventory process.
And 5, the reader sends a Query command to all tags, and the Q value is set to be 0.
And 6, the reader transmits CW to all tags.
Step 7, after the Query command ends, the Tag selected in step 4 sends a backscatter signal using the CW described in step 6, and includes a 16-bit random number (i.e., RN 16).
Step 8, the reader receives the back scattering signal and tries to decode RN16; or, the RSRP of the backscatter signal is measured.
Step 9, if the reader successfully decodes the RN16; or, if the RSRP of the measured backscatter signal is greater than a specific threshold, the mth bit B (m) =1 of bitmap; otherwise, B (m) =0 is held.
Step 10, the reader sends a Select command to clear the Tag state change caused by step 4.
And 11, repeating the steps 4-10 until the inventory process is completed for M times.
Determining the identity of the Tag that sent the backscatter signal:
step 12, for each Tag, the reader-writer matches its K fields, and if the corresponding bitmap positions are all 1, the Tag identifier is put into the identifier set D.
In step 13, the Tag in the set D is the Tag that sent the backscatter signal, and the process ends.
It should be noted that, in the above steps, the command sent by the reader/writer to the Tag may be included in at least one signaling, such as a dedicated control command, RRC signaling, MAC CE, DCI, SCI, physical frame preamble, etc., and may be carried by at least one mode, such as a dedicated wireless signal waveform (e.g., a pipe encoded ASK modulation signal), PDSCH, PDCCH, PSCCH, PSSCH, and physical frame.
Example two
Considering that the present application is implemented in a cellular system, the first, second and third nodes are considered to be the same device, and are described herein by taking a base station as an example. Embodiment one is similar to embodiment two, but differs in that it does not need to be implemented based on the inventory procedure defined by RFID. In addition, in this embodiment, consider a single frequency point (i.e. the resource can only be divided from the time domain), and the specific flow is as follows:
The initialization flow is as follows:
step 1, a (optional) base station sends a command to instruct BSC equipment entering the coverage area of the base station to register/de-register equipment, and at least one of the following contents is provided for the base station:
indication information of BSC equipment registration or residence;
indication information of the BSC equipment to register or leave;
BSC device model;
identification of the BSC device;
the frequencies and/or ranges and/or sets of frequencies that the BSC device may use;
the number and/or range and/or combination of frequencies that the BSC device may use simultaneously;
the time range and/or optional set of times that the BSC device transmits the backscatter signal;
a time domain and/or frequency domain resource definition mode supported by BSC equipment;
the BSC device transmits the maximum and/or minimum power of the backscatter signal; and/or a selectable set of powers;
a set of available impedances and/or a set of reflection coefficients for the BSC device;
signal quality measurements, such as RSRP, RSRQ, SINR, etc., of CW or base station commands are received.
Step 2, the base station sends a command to select BSC equipment participating in the identification:
all BSC devices in the coverage range of the base station are selected by default;
optionally, the command indicates a matching field and/or a matching condition, and the BSC device receiving the command matches the self information with the matching field according to the given condition, and the BSC device meeting the condition will continue to participate in the rest of the flow.
Step 3, the base station sends a command to instruct the BSC device to send all or part of the configuration of the first backscatter signal, including a) -d) the content:
a) The power or power-related parameter of the transmitted first backscatter signal, such as level, impedance, reflection coefficient, etc.;
b) The content and format, such as sequence, length, duration, etc., of the transmitted first backscatter signal;
c) The defining mode of the time domain resource is as follows: definition of time slot (a period of time with fixed length or a period of time with non-fixed length, such as corresponding to one transmission opportunity), length of time slot, starting position of time domain resource, total amount of time domain resource, total number of time slot, resource sequence number or definition of position;
d) The manner in which the resource that carries the first backscatter signal is determined is indicated by several examples:
mode 1
1. A set of hash functions, or a sequence number set of an activated hash function is selected from a preset or history indicated hash function set;
2. inputting fields and/or locations and/or lengths of the hash function, such as selecting all or part of the data from the identity of the BSC device;
3. the mapping mode of the hash function output value or the modified output value and the bearing resource;
Mode 2
1. A set of hash functions;
2. selecting a sequence number set of an activated hash function from the hash function sets;
3. inputting fields and/or locations and/or lengths of the hash function, such as selecting all or part of the data from the identity of the BSC device;
4. the mapping mode of the hash function output value or the modified output value and the bearing resource;
mode 3
1. Directly configuring a preset hash function output value;
2. the mapping mode of the hash function output value or the modified output value and the bearing resource;
mode 4
And directly configuring preset bearing resources.
Alternatively, if the command indicates only a partial configuration, or no configuration is indicated, the BSC device adopts a default configuration agreed upon.
Optionally, the command indicates synchronization information, such as preamble sequence, system time information, delimiter, etc.
If the number of (activated) hash functions is K, the number of bearer resources (bearer resources in this embodiment are time domain resources) finally mapped by the output value or the modified output value of the hash function is m 1 ,m 2 ,…m K . M of each BSC device 1 ,m 2 ,…m K Different values, and m k ∈{1,...,M}，Where M is the total number of slots.
Step 4, optionally, depending on the terminal capability of the BSC apparatus, the BSC apparatus negotiates a hash function, or a hash function output value, or bearer resources with the base station.
Mode 1
The base station acquires the information about the BSC equipment in the step 1;
option 1: configuring a set of hash functions and/or modification rules meeting the terminal capability of BSC equipment;
option 2: configuring a group of preset hash function output values and/or modification rules meeting the terminal capability of BSC equipment;
option 3: a set of preset bearer resources and/or modification rules are configured to satisfy the terminal capabilities of the BSC device.
Mode 2
The base station configures a hash function and/or a preset hash function output value and/or a preset bearing resource under the condition that the terminal capability of BSC equipment is unknown;
option 1: the BSC equipment indicates the hash function and/or hash function output value and/or bearing resource discarded or reserved by the base station;
option 2: the base station and the BSC equipment have preset discarding or reserving default rules or the base station indicates the default discarding or reserving rules, and the base station automatically discards or reserves hash function output values and/or bearing resources respectively;
option 3: the BSC equipment indicates a modification rule of the output value of the hash function of the base station or a modification rule of the bearing resource;
option 4: the base station and the BSC equipment have default modification rules which are agreed in advance, or the base station indicates the default modification rules, and the output value and/or the bearing resource of the hash function are modified by the base station and the BSC equipment respectively;
It should be noted that, in this embodiment, the terminal capability of the BSC apparatus mainly refers to the time range and/or the optional time set for transmitting the backscatter signal described in step 1. For example, in which time slots the BSC device may send signals; alternatively, the BSC continuously transmits the number of time slots of the signal.
Step 5, the base station stores and maintains the information of the identities of all BSC devices, which can be obtained by the step 1; or obtained in advance by means of calendar history records and the like.
And 6, the base station stores and maintains the identifiers of all BSC devices and the fields and/or the positions and/or the lengths of the hash function input by the BSC devices, and/or modifies the hash function output value and/or modifies rules, and/or the corresponding relation between the hash function output value or the modified output value and the mapping mode of the bearing resources.
And 7, constructing a bitmap with the length of M by the base station, and marking the bitmap as B. Wherein, B (m) represents the value of the mth bit of the bitmap, and the initial value is 0.
Identification procedure (first backscatter signal is sent M times, M-th time for example):
step 8, the base station sends a command to indicate the sequence number m of the current time slot; or, the BSC equipment determines the sequence number by itself; alternatively, the command is sent only once, and the subsequent time slots and their sequence numbers are determined by the BSC device itself.
And step 9, the base station transmits the CW to all BSC devices.
Step 10, BSC equipment matches whether the bearing resource mapped from the hash function output value or the modified output value contains a time slot with the sequence number m; or, whether the preset bearing resource contains a time slot with the sequence number of m is matched.
Step 11, the BSC apparatus successfully matched in step 10 transmits a backscatter signal using the CW of step 9 according to the parameters of a) -b) in step 3.
Step 12, the base station receives the back scattering signal and tries to decode; or, the RSRP of the backscatter signal is measured.
Step 13, if the base station successfully decodes the back scattering signal and passes verification; or, if the RSRP of the measured backscatter signal is greater than a specific threshold, the mth bit B (m) =1 of bitmap; otherwise, keep B (m) =0
Step 14, repeating steps 8-13 until the transmission of the first backscatter signal is completed.
Determining an identity of the BSC device that sent the backscatter signal:
and 15, for each BSC device, the base station matches whether the serial numbers of K time slots mapped to the output value of the hash function or the modified output value or the bitmap positions corresponding to the serial numbers of the preset K time slots are 1, and if so, the identity of the BSC device is put into the identity set D.
In step 16, the identifier in the set D is the identifier of the BSC device that sent the backscatter signal, and the process ends.
In the above steps, the command or information sent by the base station to the BSC device may be included in at least one signaling selected from dedicated control command, RRC signaling, MAC CE, DCI, SCI, physical frame preamble, etc., and may be carried by at least one mode selected from dedicated wireless signal waveform (such as PIE encoded ASK modulation signal), PDSCH, PDCCH, PSCCH, PSSCH, physical frame
In the above steps, the command or information sent by the BSC apparatus to the base station may be included in at least one signaling such as dedicated control command, RRC signaling, MAC CE, UCI, SCI, physical frame preamble, etc., and may be carried by at least one mode such as dedicated radio signal waveform (e.g. OOK modulated backscatter signal), PUSCH, PUCCH, PSCCH, PSSCH, physical frame.
Example III
Embodiment three differs from embodiment two in that this embodiment considers a dynamic hash function indication and bitmap construction, where "dynamic" refers to activating a new hash function during the identification process. The specific flow is as follows:
the initialization flow is as follows:
steps 1 and 2 are the same as steps 1 and 2 of the second embodiment.
Step 3, the base station sends a command to instruct the BSC device to send all or part of the configuration of the first backscatter signal, including a) -d) the content:
a) The power or power-related parameter of the transmitted first backscatter signal, such as level, impedance, reflection coefficient, etc.;
b) The content and format, such as sequence, length, duration, etc., of the transmitted first backscatter signal;
c) The defining mode of the time domain resource is as follows: definition of time slot (a period of time with fixed length or a period of time with non-fixed length, such as corresponding to one transmission opportunity), length of time slot, starting position of time domain resource, total amount of time domain resource, total number of time slot, resource sequence number or definition of position;
d) The manner in which the resource that carries the first backscatter signal is determined is indicated by several examples:
mode 1
1. A set of hash functions, or a sequence number set of an activated hash function is selected from a preset or history indicated hash function set;
2. inputting fields and/or locations and/or lengths of the hash function, such as selecting all or part of the data from the identity of the BSC device;
3. the mapping mode of the hash function output value or the modified output value and the bearing resource;
mode 2
1. A set of hash functions;
2. selecting a sequence number set of an activated hash function from the hash function sets;
3. inputting fields and/or locations and/or lengths of the hash function, such as selecting all or part of the data from the identity of the BSC device;
4. The mapping mode of the hash function output value or the modified output value and the bearing resource;
mode 3
1. Directly configuring a preset hash function output value;
2. the mapping mode of the hash function output value or the modified output value and the bearing resource;
mode 4
And directly configuring preset bearing resources.
Alternatively, if the command indicates only a partial configuration, or no configuration is indicated, the BSC device adopts a default configuration agreed upon.
Optionally, the command indicates synchronization information, such as preamble sequence, system time information, delimiter, etc.
For modes 1 and 2, hashThe hash function may be divided into G groups, each group having different ranges of bearer resource numbers to which the hash function output value or modified output value is ultimately mapped, e.g., the G group range may be denoted as M g-1 +1,...,M g . In addition, the number of hash functions of each group may be different, for example, the number of hash functions of the g-th group is K g . Thus, the total number of slots may be M 1 ,...,M G One of which is described herein.
For modes 3 and 4, similarly, the hash function output value or the modified output value preset in mode 3, or the bearer resources preset in mode 4 may also be divided into G groups, where the range of the bearer resource sequence numbers that each group finally maps to is different, similar to the previous description, and is not repeated.
During initialization, the base station can determine the number of used groups according to the number of registered BSC devices, and starts from the first group, for example, if g groups are indicated to be used, the 1 st group to the g group are used.
Step 4, optionally, depending on the terminal capability of the BSC apparatus, the BSC apparatus negotiates a hash function, or a hash function output value, or bearer resources with the base station.
Mode 1
The base station acquires the information about the BSC equipment in the step 1;
option 1: configuring a set of hash functions and/or modification rules meeting the terminal capability of BSC equipment;
option 2: configuring a group of preset hash function output values and/or modification rules meeting the terminal capability of BSC equipment;
option 3: a set of preset bearer resources and/or modification rules are configured to satisfy the terminal capabilities of the BSC device.
Mode 2
The base station configures a hash function and/or a preset hash function output value and/or a preset bearing resource under the condition that the terminal capability of BSC equipment is unknown;
option 1: the BSC equipment indicates the hash function and/or hash function output value and/or bearing resource discarded or reserved by the base station;
option 2: the base station and the BSC equipment have preset discarding or reserving default rules or the base station indicates the default discarding or reserving rules, and the base station automatically discards or reserves hash function output values and/or bearing resources respectively;
Option 3: the BSC equipment indicates a modification rule of the output value of the hash function of the base station or a modification rule of the bearing resource;
option 4: the base station and the BSC equipment have default modification rules which are agreed in advance, or the base station indicates the default modification rules, and the output value and/or the bearing resource of the hash function are modified by the base station and the BSC equipment respectively;
it should be noted that, in this embodiment, the terminal capability of the BSC apparatus mainly refers to the time range and/or the optional time set for transmitting the backscatter signal described in step 1. For example, in which time slots the BSC device may send signals; alternatively, the BSC continuously transmits the number of time slots of the signal.
Step 5, the base station stores and maintains the information of the identities of all BSC devices, which can be obtained by the step 1; or obtained in advance by means of calendar history records and the like.
And 6, the base station stores and maintains the identifiers of all BSC devices and the fields and/or the positions and/or the lengths of the hash function input by the BSC devices, and/or modifies the hash function output value and/or modifies rules, and/or the corresponding relation between the hash function output value or the modified output value and the mapping mode of the bearing resources.
Step 7, the base station constructs the length M g Is denoted as B. Wherein, B (m) represents the value of the mth bit of the bitmap, and the initial value is 0.
Identification procedure (the first backscatter signal is transmitted in multiple passes, illustrated by the mth pass, and the number of passes is variable, which may be M 1 ,M 2 ,..M G One of the values of (c):
steps 8 to 13 are the same as steps 8 to 13 of the second embodiment.
In step 14, the base station determines whether a new hash function (corresponding to modes 1 and 2) or a preset hash function output value (corresponding to mode 3) or a preset bearer resource (corresponding to mode 4) needs to be activated, and one method of determining is that: if the number of bits with bitmap of 1 exceeds a certain threshold, activation is required.
Step 15, if the judging condition in step 14 is true, the base station sends a command to instruct the BSC device to activate a new set of hash functions or preset hash function output values or preset bearer resources, for example, if the current set is g, then g+1 sets are indicated; and indicates BSC device to update total resource number, and to change total time slot number from M g Updated to M g+1 The method comprises the steps of carrying out a first treatment on the surface of the Meanwhile, the base station extends the length of the bitmap to M g+1 The new bit position initially takes a value of 0. It should be noted that the BSC device may not be instructed to update the total number of resources, since activating a new set means that the new total number of resources is determined and updated by the BSC device itself.
Step 16, repeating steps 8-15 until the transmission of the first backscatter signal is completed.
Determining an identity of the BSC device that sent the backscatter signal:
step 17, assuming that the active set at the end of the first backscatter signal transmission is g, for each BSC device, the base station matches its output value from the hash function or the modified output value mapped toSequence number of each time slot or presetAnd if the bitmap positions corresponding to the sequence numbers of the time slots are 1, the identification of the BSC equipment is put into the identification set D.
Step 18, for each BSC device, the base station matches whether the numbers of K time slots mapped to by the output value of the hash function or the modified output value or the bitmap positions corresponding to the preset numbers of K time slots are 1, if yes, the identity of the BSC device is put into the identity set D.
In step 19, the identifier in the set D is the identifier of the BSC device that sent the backscatter signal, and the process ends.
In the above steps, the command or information sent by the base station to the BSC device may be included in at least one signaling selected from dedicated control command, RRC signaling, MAC CE, DCI, SCI, physical frame preamble, etc., and may be carried by at least one mode selected from dedicated wireless signal waveform (such as PIE encoded ASK modulation signal), PDSCH, PDCCH, PSCCH, PSSCH, physical frame
In the above steps, the command or information sent by the BSC apparatus to the base station may be included in at least one signaling such as dedicated control command, RRC signaling, MAC CE, UCI, SCI, physical frame preamble, etc., and may be carried by at least one mode such as dedicated radio signal waveform (e.g. OOK modulated backscatter signal), PUSCH, PUCCH, PSCCH, PSSCH, physical frame.
Example IV
Embodiment four considers that the present application is implemented in a cellular system, and considers that the first, second and third nodes are the same device, and is described herein by taking a base station as an example. Embodiment four is different from embodiment two in that multiple frequency points are considered (i.e. the resource grid is extended from only time domain resources (one dimension) to time frequency domain resources (two dimensions) of a single frequency point), and in that step 3:
step 3, the base station sends a command to instruct the BSC device to send all or part of the configuration of the first backscatter signal, including:
a) The power or power-related parameter of the transmitted first backscatter signal, such as level, impedance, reflection coefficient, etc.;
b) The content and format, such as sequence, length, duration, etc., of the transmitted first backscatter signal;
c) The defining mode of the time domain resource is as follows: definition of time slots (a period of time with fixed length or a period of time with non-fixed length, such as corresponding to one transmission opportunity), length of time slots, interval of adjacent frequency points, starting position of time domain and/or frequency domain resources, total amount of time slots, total amount of frequency points, time domain and/or frequency domain resource grids, resource sequence numbers or definition of positions;
d) The manner in which the resource that carries the first backscatter signal is determined is indicated by several examples:
mode 1
1. A set of hash functions, or a sequence number set of an activated hash function is selected from a preset or history indicated hash function set;
2. inputting fields and/or locations and/or lengths of the hash function, such as selecting all or part of the data from the identity of the BSC device;
3. the mapping mode of the hash function output value or the modified output value and the bearing resource;
mode 2
1. A set of hash functions;
2. selecting a sequence number set of an activated hash function from the hash function sets;
3. inputting fields and/or locations and/or lengths of the hash function, such as selecting all or part of the data from the identity of the BSC device;
4. the mapping mode of the hash function output value or the modified output value and the bearing resource;
mode 3
1. Directly configuring a preset hash function output value;
2. the mapping mode of the hash function output value or the modified output value and the bearing resource;
mode 4
And directly configuring preset bearing resources.
Alternatively, if the command indicates only a partial configuration, or no configuration is indicated, the BSC device adopts a default configuration agreed upon.
Optionally, the command indicates synchronization information, such as preamble sequence, system time information, delimiter, etc.
If the number of (activated) hash functions is K, the number of bearer resource sequence numbers finally mapped by the output value or the modified output value of the hash function is m respectively 1 ,m 2 ,…m K . Wherein m is K May be a one-dimensional number, meaning that a two-dimensional resource grid is converted into a one-dimensional coordinate position; m is m K Or may be a two-dimensional coordinate representing the time and frequency domain locations in a two-dimensional resource grid.
M of each BSC device 1 ,m 2 ,…m K Different values, and m k ∈{1,...,M},Where m=f×t, F is the total number of frequency points, and T is the total number of slots.
Steps 1, 2, 4 to 10 are the same as in the embodiment, and are not described here again.
In step 11, the BSC apparatus with successful matching in step 10 sends the backscatter signal on the bearer resources (including time domain resources and frequency domain resources) determined in step 10 using the CW in step 9 according to the parameters described in 3a-3 b.
Step 12, the base station receives the back scattering signals on all the frequency points defined in the step 3c and tries to decode; or, RSRP of the backscatter signal at each frequency point is measured.
Step 13, if the base station successfully decodes the back scattering signal on the resource with the sequence number of m', the back scattering signal passes verification; or, if RSRP of the backscatter signal measured at the resource with sequence number m 'is greater than a specific threshold, bit B (m')=1 of the mth bit of bitmap; otherwise, hold B (m')=0; wherein m' belongs to all time-frequency resource blocks corresponding to the time slot with the time slot sequence number of m.
The present embodiment may be combined with the dynamic hash function indication of the third embodiment, and reference may be made to the third embodiment, which is not described herein.
It should be noted that, the above four embodiments are all written by taking a single-base architecture (including a traditional RFID reader scenario and a cellular networking architecture with only a base station) as an example, and the fifth embodiment below takes the second embodiment as an example to describe how to use the proposed solution in the decoupled cellular networking architecture (the first node, the second node and the third node are all different devices), but the method is also applicable to the third and fourth embodiments, and can be extended to the dual-base system architecture and all the cellular networking architectures as described above.
Example five
The second embodiment extends the second embodiment to a decoupled cellular system architecture, taking the first node as a base station, the second node as a UE, and the third node as a relay as examples, considering that the first, second, and third nodes are different devices. The specific flow of this embodiment is as follows:
the initialization flow is as follows:
steps 1-7 are the same as steps 1-7 of example two.
Identification procedure (first backscatter signal is sent M times, M-th time for example):
step 8, the base station sends a command to indicate the sequence number m of the current time slot; or, the BSC equipment automatically determines the sequence number by indicating to enter the next time slot; or only sends a command once, the subsequent time slot and its sequence number are determined by the BSC device itself.
And 9, the UE monitors the command or the base station instruction in the step 8 and sends the CW to the BSC equipment.
Step 10, optionally, the UE instructs to relay part or all of the configurations described in steps 3 and 4; or, the relay monitors the command in the steps 3 and 4 to obtain relevant configuration; or, the relay adopts a contracted configuration.
Step 11, the BSC equipment matches whether the bearing resource mapped from the hash function output value or the modified output value contains a time slot with the sequence number m; or, whether the preset bearing resource contains a time slot with the sequence number of m is matched.
Step 12, the BSC apparatus successfully matched in step 11 transmits the backscatter signal according to the parameters described in steps 3 a) -3 b) and using the CW described in step 9.
Step 13, the relay receives the back scattered signal and tries to decode; or, the RSRP of the backscatter signal is measured.
Step 14, the relay and the base station cooperate to record the bitmap:
option 1: if the relay successfully decodes the backscatter signal and passes verification; or, if the RSRP of the measured backscatter signal is greater than a specific threshold, then the base station is instructed to bit B (m) =1 of the mth bit of bitmap; otherwise, hold B (m) =0;
option 2: the relay constructs a bitmap consistent with the bitmap in the step 7, and if the relay successfully decodes the back scattering signal, the relay passes verification; or, if the RSRP of the measured backscatter signal is greater than a specific threshold, the mth bit B (m) =1 of bitmap; otherwise, B (m) =0 is held. When the first back scattering signal is sent (namely, the identification process is finished), the relay reports the local bitmap to the base station;
Option 3: the relay reports the back scattering signal or the RSRP of the back scattering signal to the base station, if the base station successfully decodes the back scattering signal and passes verification or the RSRP is larger than a specific threshold value, the base station transmits the mth bit B (m) =1 of the bitmap; otherwise, B (m) =0 is held.
Step 15, repeating steps 8-14 until the transmission of the first backscatter signal is completed.
Determining an identity of the BSC device that sent the backscatter signal:
steps 16-17 correspond to steps 15-16 of embodiment two.
In the above steps, the command or information sent by the base station to the BSC apparatus may be included in at least one signaling such as dedicated control command, RRC signaling, MAC CE, DCI, SCI, physical frame preamble, etc., and may be carried by at least one mode such as dedicated wireless signal waveform (e.g. a pipe encoded ASK modulation signal), PDSCH, PDCCH, PSCCH, PSSCH, and physical frame.
In the above steps, the command or information sent by the BSC apparatus to the base station may be included in at least one signaling such as dedicated control command, RRC signaling, MAC CE, UCI, SCI, physical frame preamble, etc., and may be carried by at least one mode such as dedicated radio signal waveform (e.g. OOK modulated backscatter signal), PUSCH, PUCCH, PSCCH, PSSCH, physical frame.
In the above steps, the information or command exchanged between the base station, the UE and the relay may be included in at least one signaling of RRC signaling, MAC CE, DCI, UCI, SCI, etc., and may be carried in at least one manner of PDSCH, PUSCH, PDCCH, PUCCH, PSCCH, PSSCH.
Example six
This embodiment describes the step of further verifying the identity of at least one BSC device transmitting the first backscatter signal, on the basis of embodiment two.
Steps 1-16 are identical to steps 1-16 of example two
And (3) checking flow:
step 17, the base station sends a command to instruct the BSC devices in set D to send a second backscatter signal, the command comprising at least one of:
a) Identification of the BSC device;
b) The power or power-related parameter of the transmitted second backscatter signal, such as level, impedance, reflection coefficient, etc.;
c) The content and format of the transmitted second backscatter signal, such as field carried, sequence, length, duration, etc.;
d) Resources for transmitting the second backscatter signal, such as orthogonal time domain, frequency domain, or code domain resources;
alternatively, if the command indicates only a partial configuration, or no configuration is indicated, the BSC device adopts a default configuration agreed upon.
Optionally, the command indicates synchronization information, such as preamble sequence, system time information, delimiter, etc.
The BSC device, indicated by the command in step 17, transmits the second backscatter signal in the specified content and format on the specified resources, step 18.
In step 19, the base station receives the second backscatter signal on the specified resource indicated by the command in step 17, and if the decoding is successful and the content or format is verified, the identity of the corresponding BSC device is put into the set D'.
In step 20, the set D' is the identity of the BSC device that transmits the first backscatter signal through verification.
Auxiliary data transmission or connection establishment:
in step 21, optionally, the command in step 17 may indicate resources reserved for the BSC device for reporting content, or resources for receiving downlink data, or establishment of connection-related signaling.
In step 22, the bsc device receives the command in step 17, and performs uplink and/or downlink data transmission on the corresponding reserved resources, or establishes a connection.
In the above steps, the command or information sent by the base station to the BSC apparatus may be included in at least one signaling such as dedicated control command, RRC signaling, MAC CE, DCI, SCI, physical frame preamble, etc., and may be carried by at least one mode such as dedicated wireless signal waveform (e.g. a pipe encoded ASK modulation signal), PDSCH, PDCCH, PSCCH, PSSCH, and physical frame.
In the above steps, the command or information sent by the BSC apparatus to the base station may be included in at least one signaling such as dedicated control command, RRC signaling, MAC CE, UCI, SCI, physical frame preamble, etc., and may be carried by at least one mode such as dedicated radio signal waveform (e.g. OOK modulated backscatter signal), PUSCH, PUCCH, PSCCH, PSSCH, physical frame.
According to the BSC equipment identification method, the execution main body can be an identification device of the BSC equipment. In the embodiment of the present application, the identification device of the BSC device provided in the embodiment of the present application is described by taking an example in which the identification device of the BSC device executes an identification method of the BSC device.
Fig. 10 is a schematic structural diagram of an identification apparatus of a BSC device according to an embodiment of the present application. As shown in fig. 10, the apparatus 1000 for identifying a BSC device includes:
a first transmitting unit 1010, configured to transmit first information, where the first information is used to trigger the BSC device to transmit a first backscatter signal according to the first configuration information;
a first identifying unit 1020 for determining an identity of the BSC device transmitting the first backscatter signal.
Optionally, the first configuration information is indicated by the first information, or part of information in the first configuration information is indicated by the first information, or the first configuration information is preconfigured.
Optionally, the first configuration information includes at least one of:
information for determining a resource carrying the first backscatter signal;
defining mode of time domain and/or frequency domain resource;
transmitting the power of the first backscatter signal or a parameter related to said power;
the content and/or format of the first backscatter signal is transmitted.
Optionally, the information for determining the resource carrying the first backscatter signal includes at least one of:
a hash function set;
selecting a sequence number set of an activated hash function from preset or indicated hash function sets;
inputting a field of the hash function, and/or inputting a position of the field of the hash function, and/or inputting a length of a field of the hash function;
rules whether the hash function output value needs to be modified and/or whether the hash function output value needs to be modified;
discarding or reserving rules of the hash function, and/or discarding or reserving rules of the hash function output value, and/or discarding or reserving rules of the bearer resource;
mapping rules of hash function output values and bearing resources, or mapping rules of modified hash function output values and bearing resources;
A preset value;
and presetting bearing resources.
Optionally, the defining manner of the time domain and/or frequency domain resources includes at least one of the following: definition of time slots, length of time slots, interval of adjacent frequency points, starting position of time domain and/or frequency domain resources, total amount of time slots, total amount of frequency points, time domain and/or frequency domain resource grid, definition of resource sequence numbers or positions.
Optionally, the first information further carries at least one of the following synchronization information: agreed sequence, system time information, delimiter.
Optionally, the apparatus further comprises a second sending unit for
Transmitting an excitation signal to the BSC device; or,
and sending second information to a second node, wherein the second information is used for indicating the second node to send an excitation signal to BSC equipment.
Optionally, the apparatus further comprises:
and a third transmitting unit, configured to transmit third information to the BSC apparatus, where the third information is used to indicate a start of a slot.
Optionally, the first identifying unit is configured to:
receiving the first back scattering signal, and determining time domain and/or frequency domain resources occupied by the first back scattering signal;
And determining the identification of BSC equipment for transmitting the first back scattering signal according to the time domain and/or frequency domain resources occupied by the first back scattering signal.
Optionally, the receiving the first backscatter signal, determining a time domain and/or frequency domain resource occupied by the first backscatter signal, includes:
receiving the first backscatter signals on candidate time and/or frequency domain resources, measuring signal quality on each candidate time and/or frequency domain resource;
and determining time domain and/or frequency domain resources occupied by the first back-scattered signal based on the signal quality.
Optionally, the determining, according to the time domain and/or frequency domain resources occupied by the first backscatter signal, the identity of the BSC device that sends the first backscatter signal includes:
mapping the time domain and/or frequency domain resources occupied by the first backscatter signal into output values of a hash function and/or modified output values to obtain a first output value;
inputting the identification of the existing BSC equipment into a hash function to obtain an output value and/or a modified output value of the hash function corresponding to the identification of the existing BSC equipment; or determining a preset value corresponding to the identification of the existing BSC equipment; the identification of the existing BSC equipment is the pre-stored identification of the BSC equipment;
For each of the identities of the existing BSC devices, performing the steps of: determining the identity of the BSC equipment which is currently identified as sending the first back scattering signal under the condition that the output value of the hash function corresponding to the current identity and/or the modified output value or the preset value are completely contained in the first output value; or determining that the current identifier does not belong to the identifier of the BSC device sending the first back scattering signal under the condition that the output value of the hash function corresponding to the current identifier and/or the modified output value or the preset value are not completely contained in the first output value.
Optionally, the determining, according to the time domain and/or frequency domain resources occupied by the first backscatter signal, the identity of the BSC device that sends the first backscatter signal includes:
determining the bearing resource of a backscatter signal corresponding to the identification of the existing BSC equipment, wherein the identification of the existing BSC equipment is the pre-stored identification of the BSC equipment;
for each of the identities of the existing BSC devices, performing the steps of: under the condition that the bearing resources of the backscatter signals corresponding to the current identifier are completely contained in the time domain and/or frequency domain resources occupied by the first backscatter signals, determining the identifier of BSC equipment which is currently identified to transmit the first backscatter signals; or determining that the current identifier does not belong to the identifier of the BSC device for transmitting the first back scattering signal under the condition that the bearing resource of the back scattering signal corresponding to the current identifier is not completely contained in the time domain and/or frequency domain resource occupied by the first back scattering signal.
Optionally, the apparatus further comprises:
a fourth sending unit, configured to send fourth information to BSC devices corresponding to each identifier in a first identifier set, where the fourth information is used to trigger the BSC devices corresponding to each identifier in the first identifier set to send a second backscatter signal, and the first identifier set includes an identifier of at least one BSC device that sends the first backscatter signal;
a second identifying unit, configured to receive the second backscatter signal, and determine, according to resources and/or content and/or format occupied by the second backscatter signal, an identity of at least one BSC device that sends the second backscatter signal;
a first determining unit, configured to take an identification of at least one BSC apparatus transmitting the second backscatter signal as an identification of a BSC apparatus transmitting the first backscatter signal through verification.
Optionally, the fourth information includes at least one of:
at least one identifier in the first set of identifiers;
transmitting a power or a power-related parameter of the second backscatter signal;
transmitting the content and/or format of the second backscatter signal;
a resource that transmits a second backscatter signal;
Resources reserved for BSC devices for uplink and/or downlink data transmission.
Optionally, the first identifying unit is configured to:
and receiving a final result fed back by the third node through fifth information, wherein the final result is determined by the third node to be the identification of the BSC equipment transmitting the first back-scattered signal or the identification of the BSC equipment transmitting the first back-scattered signal through verification.
Optionally, the first identifying unit is configured to:
receiving intermediate information fed back by a third node through sixth information, wherein the intermediate information is determined by the third node based on the received first back-scattered signal and/or second back-scattered signal;
and determining the identification of the BSC equipment for transmitting the first back scattering signal according to the intermediate information.
Optionally, the apparatus further comprises:
a fifth transmitting unit, configured to transmit seventh information to the third node, where the seventh information is used to indicate relevant configuration information for receiving and processing the first backscatter signal or/and the second backscatter signal.
Optionally, the intermediate information includes at least one of: signal quality on each candidate time-domain and/or frequency-domain resource, the time-domain and/or frequency-domain resource occupied by the first backscatter signal, the first output value, the resource and/or content and/or format occupied by the second backscatter signal.
Optionally, the relevant configuration information includes at least one of: all or part of the first configuration information, the identity of the existing BSC device, and fourth information.
Optionally, the first information is further used to indicate information of BSC devices participating in the identification.
Optionally, the information of the BSC devices participating in the identification includes: a mask and/or length and/or field for matching at least one of ID, EPC, PC/XPC, internal memory specific location content and sensor results.
Optionally, the method further comprises:
a sixth sending unit, configured to send eighth information to the BSC device, where the eighth information is used to trigger the BSC device to register or deregister;
and the first receiving unit is used for receiving ninth information sent by the BSC equipment, wherein the ninth information is used for indicating the registration information or the deregistration information of the BSC equipment.
Optionally, the method further comprises a second receiving unit for:
and receiving ninth information sent by the BSC equipment under the condition that the BSC equipment is triggered to register or deregister by an excitation signal sent by the first node or the second node, wherein the ninth information is used for indicating the registration information or the deregistration information of the BSC equipment.
Optionally, the ninth information includes at least one of:
indication information of BSC equipment registration or residence;
indication information of the BSC equipment to register or leave;
BSC device model;
identification of the BSC device;
the frequencies and/or ranges and/or sets of frequencies that the BSC device may use;
the number and/or range and/or combination of frequencies that the BSC device may use simultaneously;
the time range and/or optional set of times that the BSC device transmits the backscatter signal;
a time domain and/or frequency domain resource definition mode supported by BSC equipment;
the BSC device transmits the maximum and/or minimum power of the backscatter signal, and/or, optionally, a set of powers;
a set of available impedances and/or a set of reflection coefficients for the BSC device;
the BSC apparatus receives a signal quality measurement of the excitation signal or the seventh information.
Optionally, the apparatus further comprises:
a second receiving unit, configured to receive tenth information sent by the BSC device, where the tenth information is used to indicate at least one of the following:
a reserved or discarded hash function set or hash function sequence number set;
modification rules of hash function output values;
a modified hash function output value;
and the mapping mode of the hash function output value and the bearing resource and/or the modified mapping mode of the hash function output value and the bearing resource.
Optionally, the apparatus further comprises:
and a seventh transmitting unit, configured to transmit the updated first configuration information to the BSC apparatus by the first node during the process of transmitting the first backscatter signal by the BSC apparatus.
According to the identification device of the BSC equipment, the BSC equipment is triggered to send the first back scattering signal according to the first configuration information by sending the first information, so that the receiving end can determine the identification of the BSC equipment sending the first back scattering signal by analyzing the first back scattering signal, a large number of BSC equipment can be identified in parallel, the identification efficiency of the BSC equipment is effectively improved, and the overall time cost is greatly reduced.
The identification device of the BSC device in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in the electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the present application are not specifically limited.
The identifying device of the BSC device provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 6, and achieve the same technical effects, so that repetition is avoided, and no further description is provided herein.
Fig. 11 is a second schematic structural diagram of an identification device of a BSC apparatus according to an embodiment of the present application. As shown in fig. 11, the identifying means 1100 of the BSC apparatus includes:
a third receiving unit 1110, configured to receive first information, where the first information is used to trigger the BSC device to send a first backscatter signal;
an eighth transmitting unit 1120, configured to transmit the first backscatter signal according to the first configuration information.
Optionally, the first configuration information is indicated by the first information, or part of information in the first configuration information is indicated by the first information, or the first configuration information is preconfigured.
Optionally, the first configuration information includes at least one of:
information for determining a resource carrying the first backscatter signal;
defining mode of time domain and/or frequency domain resource;
transmitting the power of the first backscatter signal or a parameter related to said power;
the content and/or format of the first backscatter signal is transmitted.
Optionally, the information for determining the resource carrying the first backscatter signal includes at least one of:
a hash function set;
selecting a sequence number set of an activated hash function from preset or indicated hash function sets;
inputting a field of the hash function, and/or inputting a position of the field of the hash function, and/or inputting a length of a field of the hash function;
rules whether the hash function output value needs to be modified and/or whether the hash function output value needs to be modified;
discarding or reserving rules of the hash function, and/or discarding or reserving rules of the hash function output value, and/or discarding or reserving rules of the bearer resource;
mapping rules of hash function output values and bearing resources, or mapping rules of modified hash function output values and bearing resources;
a preset value;
and presetting bearing resources.
Optionally, the defining manner of the time domain and/or frequency domain resources includes at least one of the following: definition of time slots, length of time slots, interval of adjacent frequency points, starting position of time domain and/or frequency domain resources, total amount of time slots, total amount of frequency points, time domain and/or frequency domain resource grid, definition of resource sequence numbers or positions.
Optionally, the first information further carries at least one of the following synchronization information: agreed sequence, system time information, delimiter.
Optionally, the eighth transmitting unit is configured to:
determining a parameter of the first backscatter signal according to the first configuration information;
and transmitting a first back scattering signal according to the parameter of the first back scattering signal by using an excitation signal transmitted by the first node or the second node.
Optionally, the apparatus further comprises:
and the fourth receiving unit is used for receiving the excitation signal sent by the first node or the second node.
Optionally, the apparatus further comprises:
a second determining unit configured to determine a start of a slot; or,
and a fifth receiving unit, configured to receive third information sent by the first node, where the third information is used to indicate a start of a timeslot.
Optionally, the apparatus further comprises:
a sixth receiving unit, configured to receive fourth information, where the fourth information is used to trigger BSC devices corresponding to each identifier in a first identifier set to send a second backscatter signal, where the first identifier set includes an identifier of at least one BSC device that sends the first backscatter signal;
And a ninth transmitting unit configured to transmit the second backscatter signal.
Optionally, the fourth information includes at least one of:
at least one identifier in the first set of identifiers;
transmitting a power or a power-related parameter of the second backscatter signal;
transmitting the content and/or format of the second backscatter signal;
a resource that transmits a second backscatter signal;
resources reserved for BSC devices for uplink and/or downlink data transmission.
Optionally, the apparatus further comprises:
a seventh receiving unit, configured to receive eighth information sent by the first node, where the eighth information is used to trigger the BSC device to register or deregister;
a tenth transmitting unit, configured to transmit, to the first node, ninth information, where the ninth information is used to indicate registration information or deregistration information of the BSC apparatus.
Optionally, the apparatus further comprises:
an eleventh transmitting unit, configured to send ninth information to the first node, where the BSC device is triggered to perform registration or deregistration by an excitation signal sent by the first node or the second node, where the ninth information is used to indicate registration information or deregistration information of the BSC device.
Optionally, the ninth information includes at least one of:
indication information of BSC equipment registration or residence;
indication information of the BSC equipment to register or leave;
BSC device model;
identification of the BSC device;
the frequencies and/or ranges and/or sets of frequencies that the BSC device may use;
the number and/or range and/or combination of frequencies that the BSC device may use simultaneously;
the time range and/or optional set of times that the BSC device transmits the backscatter signal;
a time domain and/or frequency domain resource definition mode supported by BSC equipment;
the BSC device transmits the maximum and/or minimum power of the backscatter signal, and/or, optionally, a set of powers;
a set of available impedances and/or a set of reflection coefficients for the BSC device;
the BSC apparatus receives a signal quality measurement of the excitation signal or the seventh information.
Optionally, the apparatus further comprises:
a twelfth transmission unit configured to transmit tenth information to the first node;
wherein the tenth information is used to indicate at least one of:
a reserved or discarded hash function set or hash function sequence number set;
modification rules of hash function output values;
a modified hash function output value;
and the mapping mode of the hash function output value and the bearing resource and/or the modified mapping mode of the hash function output value and the bearing resource.
Optionally, the apparatus further comprises:
and an eighth receiving unit, configured to receive updated first configuration information sent by the first node or the second node in a process of sending the first backscatter signal by the BSC device.
In the embodiment of the application, a transmission mode of the back scattering signal which allows overlapping on time domain and/or frequency domain resources is defined, so that a receiving end can identify the identity of BSC equipment by analyzing the time domain and/or frequency domain resources occupied by the back scattering signal, thereby being capable of identifying a large number of BSC equipment in parallel, effectively improving the identification efficiency of the BSC equipment and greatly reducing the overall time cost.
The identification device of the BSC device in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in the electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the present application are not specifically limited.
The identifying device of the BSC device provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 7, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.
Fig. 12 is a third schematic structural diagram of an identification device of a BSC apparatus according to an embodiment of the present application. As shown in fig. 12, the apparatus 1200 for identifying a BSC device includes:
a ninth receiving unit 1210 for receiving the first backscatter signal and/or the second backscatter signal;
a first feedback unit 1220, configured to determine a final result according to the first backscatter signal and/or the second backscatter signal, and feed back the final result to the first node through fifth information; or determining intermediate information according to the first back scattering signal and/or the second back scattering signal, and feeding back the intermediate information to the first node through sixth information;
wherein the final result comprises an identity of the BSC device that sent the first backscatter signal or an identity of the BSC device that sent the first backscatter signal through verification;
the intermediate information includes at least one of: signal quality on each candidate time-domain and/or frequency-domain resource, the time-domain and/or frequency-domain resource occupied by the first backscatter signal, the first output value, the resource and/or content and/or format occupied by the second backscatter signal; the first output value is an output value and/or a modified output value of mapping time domain and/or frequency domain resources occupied by the first backscatter signal into a hash function.
Optionally, the determining the final result according to the first back-scattered signal and/or the second back-scattered signal includes:
receiving the first back scattering signal, and determining time domain and/or frequency domain resources occupied by the first back scattering signal;
and determining the identification of BSC equipment for transmitting the first back scattering signal according to the time domain and/or frequency domain resources occupied by the first back scattering signal.
Optionally, the receiving the first backscatter signal, determining a time domain and/or frequency domain resource occupied by the first backscatter signal, including;
receiving the first backscatter signals on candidate time and/or frequency domain resources, measuring signal quality on each candidate time and/or frequency domain resource;
and determining time domain and/or frequency domain resources occupied by the first back-scattered signal based on the signal quality.
Optionally, the determining, according to the time domain and/or frequency domain resources occupied by the first backscatter signal, the identity of the BSC device that sends the first backscatter signal includes:
mapping the time domain and/or frequency domain resources occupied by the first backscatter signal into output values of a hash function and/or modified output values to obtain a first output value;
Inputting the identification of the existing BSC equipment into a hash function to obtain an output value and/or a modified output value of the hash function corresponding to the identification of the existing BSC equipment; or determining a preset value corresponding to the identification of the existing BSC equipment; the identification of the existing BSC equipment is the pre-stored identification of the BSC equipment;
for each of the identities of the existing BSC devices, performing the steps of: determining the identity of the BSC equipment which is currently identified as sending the first back scattering signal under the condition that the output value of the hash function corresponding to the current identity and/or the modified output value or the preset value are completely contained in the first output value; or determining that the current identifier does not belong to the identifier of the BSC device sending the first back scattering signal under the condition that the output value of the hash function corresponding to the current identifier and/or the modified output value or the preset value are not completely contained in the first output value.
Optionally, the determining, according to the time domain and/or frequency domain resources occupied by the first backscatter signal, the identity of the BSC device that sends the first backscatter signal includes at least one of the following:
Determining the bearing resource of a backscatter signal corresponding to the identification of the existing BSC equipment, wherein the identification of the existing BSC equipment is the pre-stored identification of the BSC equipment;
for each of the identities of the existing BSC devices, performing the steps of: under the condition that the bearing resources of the backscatter signals corresponding to the current identifier are completely contained in the time domain and/or frequency domain resources occupied by the first backscatter signals, determining the identifier of BSC equipment which is currently identified to transmit the first backscatter signals; or determining that the current identifier does not belong to the identifier of the BSC device for transmitting the first back scattering signal under the condition that the bearing resource of the back scattering signal corresponding to the current identifier is not completely contained in the time domain and/or frequency domain resource occupied by the first back scattering signal.
Optionally, after the following steps are performed for each of the identities of the existing BSC devices, the apparatus further includes:
a thirteenth sending unit, configured to send fourth information to BSC devices corresponding to each identifier in a first identifier set, where the fourth information is used to trigger the BSC devices corresponding to each identifier in the first identifier set to send a second backscatter signal, and the first identifier set includes an identifier of at least one BSC device that sends the first backscatter signal;
A third identifying unit, configured to receive the second backscatter signal, and determine, according to resources and/or content and/or format occupied by the second backscatter signal, an identity of at least one BSC device that sends the second backscatter signal;
and a second confirmation unit, configured to take the identity of at least one BSC device that transmits the second backscatter signal as the identity of the BSC device that transmits the first backscatter signal through verification.
Optionally, the apparatus further comprises:
a first obtaining unit for obtaining relevant configuration information for receiving and processing the first back-scattered signal or and/or the second back-scattered signal by at least one of:
receiving seventh information sent by the first node, wherein the seventh information is used for indicating relevant configuration information for receiving and processing the first back scattering signal or/and the second back scattering signal;
monitoring first information and/or third information;
a pre-agreed manner.
Optionally, the relevant configuration information includes at least one of: all or part of the first configuration information, the identity of the existing BSC device, and fourth information.
Optionally, the intermediate information includes at least one of: signal quality on each candidate time-domain and/or frequency-domain resource, the time-domain and/or frequency-domain resource occupied by the first backscatter signal, the first output value, the resource and/or content and/or format occupied by the second backscatter signal.
In the embodiment of the invention, the identification of the BSC equipment can be identified by analyzing the time domain and/or frequency domain resources occupied by the first back scattering signal, so that a large number of BSC equipment can be identified in parallel, the identification efficiency of the BSC equipment can be effectively improved, and the overall time cost is greatly reduced.
The identifying device of the BSC device provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 8, and achieve the same technical effects, so that repetition is avoided, and no further description is provided herein.
Fig. 13 is a fourth schematic structural diagram of an identification apparatus of a BSC device according to an embodiment of the present application, as shown in fig. 13, an identification apparatus 1300 of a BSC device includes:
a tenth receiving unit 1310, configured to receive second information sent by the first node, where the second information is used to instruct the second node to send an excitation signal to the BSC device; or the second node monitors the first information and acquires the configuration related to the sending of the excitation signal;
a fourteenth transmitting unit 1320 for transmitting an excitation signal to the BSC apparatus.
Optionally, the apparatus further comprises:
and a fifteenth transmitting unit, configured to transmit an excitation signal for triggering the BSC device to perform device registration or de-registration to the BSC device.
Optionally, the apparatus further comprises:
a sixteenth sending unit, configured to send, during the process of sending the first backscatter signal by the BSC device, updated first configuration information to the BSC device by the second node.
In the embodiment of the application, the excitation signal is provided to enable the BSC equipment to send the back scattering signal, so that the control command sender and/or the back scattering signal receiving end can identify the identification of the BSC equipment by analyzing the time domain and/or frequency domain resources occupied by the first back scattering signal, thereby being capable of identifying a large number of BSC equipment in parallel, effectively improving the identification efficiency of the BSC equipment and greatly reducing the overall time cost.
The identifying device of the BSC device provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 9, and achieve the same technical effects, so that repetition is avoided, and no further description is provided herein.
Optionally, as shown in fig. 14, the embodiment of the present application further provides a communication device 1400, including a processor 1401 and a memory 1402, where the memory 1402 stores a program or instructions that can be executed on the processor 1401, for example, when the communication device 1400 is a first node or a second node or a third node or a BSC device, the program or instructions implement, when executed by the processor 1401, the steps of the foregoing method embodiment for identifying a BSC device, and achieve the same technical effects.
The embodiment of the application provides a first node, which comprises a processor and a memory, wherein the memory stores a program or instructions executable on the processor, and the program or instructions implement steps of the identification method of the BSC device according to the first aspect when executed by the processor.
The embodiment of the application provides a first node, which comprises a processor and a communication interface, wherein the communication interface is used for sending first information, and the first information is used for triggering BSC equipment to send a first back scattering signal according to first configuration information; the processor is configured to determine an identity of a BSC device that transmitted the first backscatter signal.
In an embodiment of the present application, there is provided a BSC apparatus including a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement steps of a method for identifying a BSC apparatus, such as a BSC apparatus side.
The embodiment of the application provides BSC equipment, which comprises a processor and a communication interface, wherein the communication interface is used for receiving first information, the first information is used for triggering the BSC equipment to send a first back-scattering signal, and the processor is used for sending the first back-scattering signal according to first configuration information.
In an embodiment of the present application, a third node is provided, where the first node includes a processor and a memory, where the memory stores a program or an instruction that can be executed on the processor, where the program or the instruction is executed by the processor to implement steps of a method for identifying a BSC device on the side of the third node.
The embodiment of the application provides a third node, which comprises a processor and a communication interface, wherein the communication interface is used for receiving a first back scattering signal and/or a second back scattering signal; the processor is used for determining a final result according to the first back-scattered signal and/or the second back-scattered signal, and feeding back the final result to the first node through fifth information; or determining intermediate information according to the first back scattering signal and/or the second back scattering signal, and feeding back the intermediate information to the first node through sixth information; wherein the final result comprises an identification of the BSC device that sent the first backscatter signal or an identification of the BSC device that sent the first backscatter signal through verification.
In an embodiment of the present application, there is provided a second node, where the second node includes a processor and a memory, where the memory stores a program or an instruction executable on the processor, and the program or the instruction is executed by the processor to implement steps of a method for identifying a BSC device on the side of the second node.
The embodiment of the application provides a second node, which comprises a processor and a communication interface, wherein the communication interface is used for receiving second information sent by a first node, and the second information is used for indicating the second node to send an excitation signal to BSC equipment; or monitoring the first information to obtain the configuration related to the sending of the excitation signal; the communication interface is also configured to send an excitation signal to the BSC device.
The embodiment of the application also provides a terminal, which comprises a processor and a communication interface. The terminal embodiment corresponds to the first node side or third node side or second node side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 15 is a schematic hardware structure of a terminal for implementing an embodiment of the present application.
The terminal 1500 includes, but is not limited to: at least some of the components of the radio frequency unit 1501, the network module 1502, the audio output unit 1503, the input unit 1504, the sensor 1505, the display unit 1506, the user input unit 1507, the interface unit 1508, the memory 1509, and the processor 1510, among others.
Those skilled in the art will appreciate that the terminal 1500 may also include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 15 by a power management system, such as to perform functions such as managing charging, discharging, and power consumption by the power management system. The terminal structure shown in fig. 15 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.
It should be appreciated that in embodiments of the present application, the input unit 1504 may include a graphics processing unit (Graphics Processing Unit, GPU) 15041 and a microphone 15042, with the graphics processor 15041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 1506 may include a display panel 15061, and the display panel 15061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1507 includes at least one of a touch panel 15071 and other input devices 15072. The touch panel 15071 is also referred to as a touch screen. The touch panel 15071 may include two parts, a touch detection device and a touch controller. Other input devices 15072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.
In this embodiment, after receiving downlink data from the network side device, the radio frequency unit 1501 may transmit the downlink data to the processor 1510 for processing; in addition, the radio frequency unit 1501 may send uplink data to the network side device. Typically, the radio frequency unit 1501 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low noise amplifiers, diplexers, and the like.
The memory 1509 may be used to store software programs or instructions and various data. The memory 1509 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 1509 may include volatile memory or nonvolatile memory, or the memory 1509 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 1509 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.
The processor 1510 may include one or more processing units; optionally, the processor 1510 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, and the like, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modulation and demodulation processor described above may not be integrated into the processor 1510.
Wherein, the radio frequency unit 1501 is configured to send first information, where the first information is configured to trigger the BSC device to send a first backscatter signal according to the first configuration information
A processor 1510 is configured to determine an identity of a BSC device transmitting the first backscatter signal.
Optionally, the radio frequency unit 1501 is further configured to send an excitation signal to the BSC apparatus; or,
and sending second information to a second node, wherein the second information is used for indicating the second node to send an excitation signal to BSC equipment.
Optionally, the radio frequency unit 1501 is further configured to send third information to the BSC apparatus, where the third information is used to indicate the start of the time slot.
Optionally, a processor 1510 is configured to receive the first backscatter signal, and determine time domain and/or frequency domain resources occupied by the first backscatter signal; and determining the identification of BSC equipment for transmitting the first back scattering signal according to the time domain and/or frequency domain resources occupied by the first back scattering signal.
Optionally, the receiving the first backscatter signal, determining a time domain and/or frequency domain resource occupied by the first backscatter signal, includes:
receiving the first backscatter signals on candidate time and/or frequency domain resources, measuring signal quality on each candidate time and/or frequency domain resource;
and determining time domain and/or frequency domain resources occupied by the first back-scattered signal based on the signal quality.
Optionally, the determining, according to the time domain and/or frequency domain resources occupied by the first backscatter signal, the identity of the BSC device that sends the first backscatter signal includes:
mapping the time domain and/or frequency domain resources occupied by the first backscatter signal into output values of a hash function and/or modified output values to obtain a first output value;
inputting the identification of the existing BSC equipment into a hash function to obtain an output value and/or a modified output value of the hash function corresponding to the identification of the existing BSC equipment; or determining a preset value corresponding to the identification of the existing BSC equipment; the identification of the existing BSC equipment is the pre-stored identification of the BSC equipment;
for each of the identities of the existing BSC devices, performing the steps of: determining the identity of the BSC equipment which is currently identified as sending the first back scattering signal under the condition that the output value of the hash function corresponding to the current identity and/or the modified output value or the preset value are completely contained in the first output value; or determining that the current identifier does not belong to the identifier of the BSC device sending the first back scattering signal under the condition that the output value of the hash function corresponding to the current identifier and/or the modified output value or the preset value are not completely contained in the first output value.
Optionally, the determining, according to the time domain and/or frequency domain resources occupied by the first backscatter signal, the identity of the BSC device that sends the first backscatter signal includes:
determining the bearing resource of a backscatter signal corresponding to the identification of the existing BSC equipment, wherein the identification of the existing BSC equipment is the pre-stored identification of the BSC equipment;
for each of the identities of the existing BSC devices, performing the steps of: under the condition that the bearing resources of the backscatter signals corresponding to the current identifier are completely contained in the time domain and/or frequency domain resources occupied by the first backscatter signals, determining the identifier of BSC equipment which is currently identified to transmit the first backscatter signals; or determining that the current identifier does not belong to the identifier of the BSC device for transmitting the first back scattering signal under the condition that the bearing resource of the back scattering signal corresponding to the current identifier is not completely contained in the time domain and/or frequency domain resource occupied by the first back scattering signal.
Optionally, the radio frequency unit 1501 is further configured to send fourth information to BSC devices corresponding to each identifier in a first identifier set, where the fourth information is used to trigger the BSC devices corresponding to each identifier in the first identifier set to send a second reverse scatter signal, and the first identifier set includes an identifier of at least one BSC device that sends the first reverse scatter signal;
The radio frequency unit 1501 is further configured to receive the second backscatter signal, and determine, according to the resources and/or content and/or format occupied by the second backscatter signal, an identity of at least one BSC device that transmits the second backscatter signal;
a processor 1510 is configured to treat the identity of at least one BSC device transmitting the second backscatter signal as an identity of a verified BSC device transmitting the first backscatter signal.
Optionally, the processor 1510 is further configured to receive a final result fed back by the third node through the fifth information, where the final result is determined by the third node to be the identity of the BSC device that sends the first backscatter signal or the identity of the BSC device that sends the first backscatter signal through verification.
Optionally, the processor 1510 is further configured to receive intermediate information fed back by the third node through sixth information, where the intermediate information is determined by the third node based on the received first backscatter signal and/or the second backscatter signal; and determining the identification of the BSC equipment for transmitting the first back scattering signal according to the intermediate information.
Optionally, the radio frequency unit 1501 is further configured to send seventh information to the third node, the seventh information being configured to indicate that the relevant configuration information of the first backscatter signal or and/or the second backscatter signal is received and processed.
Optionally, the radio frequency unit 1501 is further configured to send eighth information to the BSC apparatus, where the eighth information is used to trigger the BSC apparatus to register or deregister; and receiving ninth information sent by the BSC equipment, wherein the ninth information is used for indicating the registration information or the deregistration information of the BSC equipment.
Optionally, the radio frequency unit 1501 is further configured to, when the BSC device is triggered by an excitation signal sent by the first node or the second node to register or deregister, receive ninth information sent by the BSC device, where the ninth information is used to indicate registration information or deregistration information of the BSC device.
Optionally, the radio frequency unit 1501 is further configured to receive tenth information sent by the BSC apparatus, where the tenth information is used to indicate at least one of the following:
a reserved or discarded hash function set or hash function sequence number set;
modification rules of hash function output values;
a modified hash function output value;
and the mapping mode of the hash function output value and the bearing resource and/or the modified mapping mode of the hash function output value and the bearing resource.
Optionally, the radio frequency unit 1501 is further configured to send updated first configuration information to the BSC apparatus during the process of sending the first backscatter signal by the BSC apparatus.
According to the embodiment of the application, the BSC equipment is triggered to send the first back scattering signal according to the first configuration information by sending the first information, so that the receiving end can determine the identification of the BSC equipment sending the first back scattering signal by analyzing the first back scattering signal, a large number of BSC equipment can be identified in parallel, the identification efficiency of the BSC equipment is effectively improved, and the overall time cost is greatly reduced.
In another embodiment, the terminal embodiment may also correspond to the third node side or the second node side method embodiment, and each implementation process and implementation manner of the above method embodiment may be applied to the terminal embodiment, and the same technical effect may be achieved, which is not described herein.
The embodiment of the application also provides a network side device, which comprises a processor and a communication interface, wherein the network side device embodiment corresponds to the first node, the second node or the third node side method embodiment, and each implementation process and implementation mode of the method embodiment can be applied to the network side device embodiment and can achieve the same technical effect.
Specifically, the embodiment of the application also provides network side equipment. As shown in fig. 16, the network side device 1600 includes: an antenna 1601, a radio frequency device 1602, a baseband device 1603, a processor 1604, and a memory 1605. The antenna 1601 is coupled to a radio frequency device 1602. In the uplink direction, the radio frequency device 1602 receives information via the antenna 1601, and transmits the received information to the baseband device 1603 for processing. In the downlink direction, the baseband device 1603 processes information to be transmitted and transmits the processed information to the radio frequency device 1602, and the radio frequency device 1602 processes the received information and transmits the processed information via the antenna 1601.
The method performed by the network-side device in the above embodiment may be implemented in the baseband apparatus 1603, and the baseband apparatus 1603 includes a baseband processor.
The baseband apparatus 1603 may, for example, comprise at least one baseband board on which a plurality of chips are disposed, as shown in fig. 16, where one chip, for example, a baseband processor, is connected to the memory 1605 through a bus interface to invoke a program in the memory 1605 to perform the network device operations shown in the above method embodiments.
The network-side device may also include a network interface 1606, such as a common public radio interface (common public radio interface, CPRI).
Specifically, the network side device 1600 of the embodiment of the present invention further includes: instructions or programs stored in the memory 1605 and executable on the processor 1604, the processor 1604 invokes the instructions or programs in the memory 1605 to perform the methods performed by the modules shown in fig. 10 or fig. 12 or fig. 13 and achieve the same technical effects, and are not repeated here.
The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the processes of the foregoing embodiments of the method for identifying BSC devices are implemented, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.
Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.
The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction, implement each process of the foregoing embodiment of the identification method of the BSC device, and achieve the same technical effect, so that repetition is avoided, and no further description is given here.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.
The embodiments of the present application further provide a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the foregoing embodiments of the identification method of the BSC apparatus, and the same technical effects are achieved, so that repetition is avoided and details are not repeated herein.
The embodiment of the application also provides a communication system, which comprises: the method comprises the steps of a first node, a second node, a third node and a BSC device, wherein the first node can be used for executing the steps of the identification method of the BSC device, the second node can be used for executing the steps of the identification method of the BSC device, and the third node can be used for executing the steps of the identification method of the BSC device, and the BSC device can be used for executing the steps of the identification method of the BSC device.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in part in the form of a computer software product stored on a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and including instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the methods described in the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative, not restrictive, and many modifications may be made by one of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which fall within the protection of the present application.
Claims (60)
1. A method for identifying a BSC device, comprising:
the first node transmits first information, wherein the first information is used for triggering BSC equipment to transmit a first back scattering signal according to the first configuration information;
the first node determines an identity of a BSC device that sent the first backscatter signal.
2. The method of claim 1, wherein the first configuration information is indicated by the first information, or wherein a portion of the first configuration information is indicated by the first information, or wherein the first configuration information is preconfigured.
3. The method of claim 2, wherein the first configuration information comprises at least one of:
Information for determining a resource carrying the first backscatter signal;
defining mode of time domain and/or frequency domain resource;
transmitting the power of the first backscatter signal or a parameter related to said power;
the content and/or format of the first backscatter signal is transmitted.
4. A method according to claim 3, wherein the information for determining the resource carrying the first backscattered signal comprises at least one of:
a hash function set;
selecting a sequence number set of an activated hash function from preset or indicated hash function sets;
inputting a field of the hash function, and/or inputting a position of the field of the hash function, and/or inputting a length of the field of the hash function;
rules whether the hash function output value needs to be modified and/or whether the hash function output value needs to be modified;
discarding or reserving rules of the hash function, and/or discarding or reserving rules of the hash function output value, and/or discarding or reserving rules of the bearer resource;
mapping rules of hash function output values and bearing resources, or mapping rules of modified hash function output values and bearing resources;
a preset value;
and presetting bearing resources.
5. A method according to claim 3, wherein the time and/or frequency domain resources are defined in a manner comprising at least one of: definition of time slots, length of time slots, interval of adjacent frequency points, starting position of time domain and/or frequency domain resources, total amount of time slots, total amount of frequency points, definition of time domain and/or frequency domain resource grids, resource sequence numbers or positions.
6. The method according to claim 1 or 2, characterized in that the first information also carries at least one of the following synchronization information: agreed sequence, system time information, delimiter.
7. The method according to any one of claims 1-6, further comprising:
the first node sends an excitation signal to BSC equipment; or,
the first node sends second information to the second node, wherein the second information is used for indicating the second node to send an excitation signal to the BSC equipment.
8. The method of claim 7, wherein the method further comprises:
the first node sends third information to the BSC apparatus, the third information indicating the start of the time slot.
9. The method of claim 1, wherein the first node determining the identity of the BSC device that sent the first backscatter signal comprises:
The first node receives the first back scattering signal and determines time domain and/or frequency domain resources occupied by the first back scattering signal;
and the first node determines the identification of BSC equipment for transmitting the first back scattering signal according to the time domain and/or frequency domain resources occupied by the first back scattering signal.
10. The method of claim 9, wherein the receiving the first backscatter signal, determining time and/or frequency domain resources occupied by the first backscatter signal, comprises:
receiving the first backscatter signals on candidate time and/or frequency domain resources, measuring signal quality on each candidate time and/or frequency domain resource;
and determining time domain and/or frequency domain resources occupied by the first back-scattered signal based on the signal quality.
11. The method of claim 9, wherein said determining the identity of the BSC device transmitting the first backscatter signal based on time and/or frequency domain resources occupied by the first backscatter signal, comprises:
mapping the time domain and/or frequency domain resources occupied by the first backscatter signal into output values of a hash function and/or modified output values to obtain a first output value;
Inputting the identification of the existing BSC equipment into a hash function to obtain an output value and/or a modified output value of the hash function corresponding to the identification of the existing BSC equipment; or determining a preset value corresponding to the identification of the existing BSC equipment; the identification of the existing BSC equipment is the pre-stored identification of the BSC equipment;
for each of the identities of the existing BSC devices, performing the steps of: determining the identity of the BSC equipment which is currently identified to send the first back scattering signal under the condition that the output value of the hash function corresponding to the current identity and/or the modified output value or the preset value are completely contained in the first output value; or determining that the current identifier does not belong to the identifier of the BSC device sending the first back scattering signal under the condition that the output value of the hash function corresponding to the current identifier and/or the modified output value or the preset value are not completely contained in the first output value.
12. The method of claim 9, wherein said determining the identity of the BSC device transmitting the first backscatter signal based on time and/or frequency domain resources occupied by the first backscatter signal, comprises:
Determining the bearing resource of a backscatter signal corresponding to the identification of the existing BSC equipment, wherein the identification of the existing BSC equipment is the pre-stored identification of the BSC equipment;
for each of the identities of the existing BSC devices, performing the steps of: determining the identity of BSC equipment which is currently identified as transmitting the first back scattering signal under the condition that the bearing resources of the back scattering signal corresponding to the current identity are completely contained in the time domain and/or frequency domain resources occupied by the first back scattering signal; or determining that the current identifier does not belong to the identifier of the BSC device for transmitting the first back scattering signal under the condition that the bearing resource of the back scattering signal corresponding to the current identifier is not completely contained in the time domain and/or frequency domain resource occupied by the first back scattering signal.
13. The method according to claim 11 or 12, wherein said method further comprises, for each of said identities of existing BSC devices, after performing the steps of:
the first node sends fourth information to BSC equipment corresponding to each identifier in a first identifier set, wherein the fourth information is used for triggering BSC equipment corresponding to each identifier in the first identifier set to send a second back-scattered signal, and the first identifier set comprises identifiers of at least one BSC equipment for sending the first back-scattered signal;
The first node receives the second back-scattered signal, and determines the identification of at least one BSC device for transmitting the second back-scattered signal according to the resources and/or the content and/or the format occupied by the second back-scattered signal;
the first node uses the identity of at least one BSC device transmitting the second backscatter signal as an identity of a verified BSC device transmitting the first backscatter signal.
14. The method of claim 13, wherein the fourth information comprises at least one of:
at least one identifier in the first set of identifiers;
transmitting a power or a power-related parameter of the second backscatter signal;
transmitting the content and/or format of the second backscatter signal;
a resource that transmits a second backscatter signal;
resources reserved for BSC devices for uplink and/or downlink data transmission.
15. The method of claim 1, wherein the first node determining the identity of the BSC device that sent the first backscatter signal comprises:
the first node receives a final result fed back by the third node through fifth information, where the final result is the identity of the BSC device transmitting the first backscatter signal or the identity of the BSC device transmitting the first backscatter signal determined by the third node through verification.
16. The method of claim 1, wherein the first node determining the identity of the BSC device that sent the first backscatter signal comprises:
the first node receives intermediate information fed back by a third node through sixth information, wherein the intermediate information is determined by the third node based on the received first back scattering signal and/or second back scattering signal;
and the first node determines the identification of BSC equipment for transmitting the first back scattering signal according to the intermediate information.
17. The method according to claim 15 or 16, wherein before the first node determines the identity of the BSC device that sent the first backscatter signal, the method further comprises:
the first node sends seventh information to the third node, the seventh information being indicative of relevant configuration information for receiving and processing the first back-scattered signal or/and the second back-scattered signal.
18. The method of claim 16, wherein the intermediate information comprises at least one of: signal quality on each candidate time-domain and/or frequency-domain resource, the time-domain and/or frequency-domain resource occupied by the first backscatter signal, the first output value, the resource and/or content and/or format occupied by the second backscatter signal.
19. The method of claim 17, wherein the relevant configuration information comprises at least one of: all or part of the first configuration information, the identity of the existing BSC device, and fourth information.
20. The method of claim 1, wherein the first information is further used to indicate information of BSC devices participating in the identification.
21. The method of claim 20, wherein the information of the BSC devices participating in the identification comprises: a mask and/or length and/or field for matching at least one of ID, EPC, PC/XPC, internal memory specific location content and sensor results.
22. The method according to any one of claims 1-21, further comprising:
the first node sends eighth information to the BSC equipment, wherein the eighth information is used for triggering the BSC equipment to register or deregister;
and the first node receives ninth information sent by the BSC equipment, wherein the ninth information is used for indicating the registration information or the deregistration information of the BSC equipment.
23. The method according to any one of claims 1-21, further comprising: and under the condition that the BSC equipment is triggered to register or deregister by an excitation signal sent by the first node or the second node, the first node receives ninth information sent by the BSC equipment, wherein the ninth information is used for indicating the registration information or the deregistration information of the BSC equipment.
24. The method according to claim 22 or 23, wherein the ninth information comprises at least one of:
indication information of BSC equipment registration or residence;
indication information of the BSC equipment to register or leave;
BSC device model;
identification of the BSC device;
the frequencies and/or ranges and/or sets of frequencies that the BSC device may use;
the number and/or range and/or combination of frequencies that the BSC device may use simultaneously;
the time range and/or optional set of times that the BSC device transmits the backscatter signal;
a time domain and/or frequency domain resource definition mode supported by BSC equipment;
the BSC device transmits the maximum and/or minimum power of the backscatter signal, and/or, optionally, a set of powers;
a set of available impedances and/or a set of reflection coefficients for the BSC device;
the BSC apparatus receives a signal quality measurement of the excitation signal or the seventh information.
25. The method of claim 1, wherein prior to the first node determining the identity of the BSC device that transmitted the first backscatter signal, the method further comprises:
receiving tenth information sent by the BSC equipment, wherein the tenth information is used for indicating at least one of the following:
a reserved or discarded hash function set or hash function sequence number set;
Modification rules of hash function output values;
a modified hash function output value;
and the mapping mode of the hash function output value and the bearing resource and/or the modified mapping mode of the hash function output value and the bearing resource.
26. The method according to any one of claims 2-5, further comprising:
in the process of the BSC device sending the first back scattering signal, the first node sends updated first configuration information to the BSC device.
27. A method for identifying a BSC device, comprising:
the BSC equipment receives first information, wherein the first information is used for triggering the BSC equipment to send a first back scattering signal;
the BSC device sends a first backscatter signal according to the first configuration information.
28. The method of claim 27, wherein the first configuration information is indicated by the first information or a portion of the first configuration information is indicated by the first information or the first configuration information is preconfigured.
29. The method of claim 28, wherein the first configuration information comprises at least one of:
Information for determining a resource carrying the first backscatter signal;
defining mode of time domain and/or frequency domain resource;
transmitting the power of the first backscatter signal or a parameter related to said power;
the content and/or format of the first backscatter signal is transmitted.
30. The method of claim 29, wherein the information for determining the resource carrying the first backscatter signal comprises at least one of:
a hash function set;
selecting a sequence number set of an activated hash function from preset or indicated hash function sets;
inputting a field of the hash function, and/or inputting a position of the field of the hash function, and/or inputting a length of the field of the hash function;
rules whether the hash function output value needs to be modified and/or whether the hash function output value needs to be modified;
discarding or reserving rules of the hash function, and/or discarding or reserving rules of the hash function output value, and/or discarding or reserving rules of the bearer resource;
mapping rules of hash function output values and bearing resources, or mapping rules of modified hash function output values and bearing resources;
a preset value;
And presetting bearing resources.
31. The method according to claim 29, wherein the time and/or frequency domain resources are defined in a manner comprising at least one of: definition of time slots, length of time slots, interval of adjacent frequency points, starting position of time domain and/or frequency domain resources, total amount of time slots, total amount of frequency points, definition of time domain and/or frequency domain resource grids, resource sequence numbers or positions.
32. The method according to claim 27 or 28, wherein the first information further carries at least one of the following synchronization information: agreed sequence, system time information, delimiter.
33. The method of claim 27 wherein the BSC apparatus transmitting a first backscatter signal according to the first configuration information, comprising:
the BSC equipment determines parameters of a first back scattering signal according to the first configuration information;
and transmitting a first back scattering signal according to the parameter of the first back scattering signal by using an excitation signal transmitted by the first node or the second node.
34. The method of claim 33, wherein the method further comprises:
And receiving an excitation signal sent by the first node or the second node.
35. The method of claim 27, wherein the method further comprises:
the BSC device determines the beginning of a time slot; or,
and receiving third information sent by the first node, wherein the third information is used for indicating the beginning of a time slot.
36. The method according to any one of claims 27-35, further comprising:
receiving fourth information, wherein the fourth information is used for triggering BSC equipment corresponding to each identifier in a first identifier set to send a second back-scattered signal, and the first identifier set comprises at least one identifier of the BSC equipment sending the first back-scattered signal;
a second backscatter signal is transmitted.
37. The method of claim 36, wherein the fourth information comprises at least one of:
at least one identifier in the first set of identifiers;
transmitting a power or a power-related parameter of the second backscatter signal;
transmitting the content and/or format of the second backscatter signal;
a resource that transmits a second backscatter signal;
resources reserved for BSC devices for uplink and/or downlink data transmission.
38. The method according to any one of claims 27-37, further comprising:
receiving eighth information sent by the first node, wherein the eighth information is used for triggering BSC equipment to register or deregister;
and transmitting ninth information to the first node, wherein the ninth information is used for indicating registration information or deregistration information of the BSC device.
39. The method according to any one of claims 27-37, further comprising:
and in the case that the BSC equipment is triggered to register or deregister by an excitation signal sent by the first node or the second node, transmitting ninth information to the first node, wherein the ninth information is used for indicating the registration information or the deregistration information of the BSC equipment.
40. The method of claim 38 or 39, wherein the ninth information comprises at least one of:
indication information of BSC equipment registration or residence;
indication information of the BSC equipment to register or leave;
BSC device model;
identification of the BSC device;
the frequencies and/or ranges and/or sets of frequencies that the BSC device may use;
the number and/or range and/or combination of frequencies that the BSC device may use simultaneously;
The time range and/or optional set of times that the BSC device transmits the backscatter signal;
a time domain and/or frequency domain resource definition mode supported by BSC equipment;
the BSC device transmits the maximum and/or minimum power of the backscatter signal, and/or, optionally, a set of powers;
a set of available impedances and/or a set of reflection coefficients for the BSC device;
the BSC apparatus receives a signal quality measurement of the excitation signal or the seventh information.
41. The method as recited in any one of claims 27-40, wherein after the BSC device receives the first information, the method further comprises:
transmitting tenth information to the first node;
wherein the tenth information is used to indicate at least one of:
a reserved or discarded hash function set or hash function sequence number set;
modification rules of hash function output values;
a modified hash function output value;
and the mapping mode of the hash function output value and the bearing resource and/or the modified mapping mode of the hash function output value and the bearing resource.
42. The method of any one of claims 27-41, further comprising:
and in the process of sending the first back scattering signal by the BSC equipment, receiving updated first configuration information sent by the first node or the second node.
43. A method for identifying a BSC device, comprising:
the third node receives the first backscatter signal and/or the second backscatter signal;
determining a final result according to the first back scattering signal and/or the second back scattering signal, and feeding back the final result to a first node through fifth information; or determining intermediate information according to the first back scattering signal and/or the second back scattering signal, and feeding back the intermediate information to the first node through sixth information;
wherein the final result comprises an identification of the BSC device that sent the first backscatter signal or an identification of the BSC device that sent the first backscatter signal through verification.
44. The method of claim 43, wherein said determining a final result from said first and/or second backscatter signals comprises;
receiving the first back scattering signal, and determining time domain and/or frequency domain resources occupied by the first back scattering signal;
and determining the identification of BSC equipment for transmitting the first back scattering signal according to the time domain and/or frequency domain resources occupied by the first back scattering signal.
45. A method as defined in claim 44, wherein the receiving the first backscatter signal, determining time and/or frequency domain resources occupied by the first backscatter signal, comprises;
receiving the first backscatter signals on candidate time and/or frequency domain resources, measuring signal quality on each candidate time and/or frequency domain resource;
and determining time domain and/or frequency domain resources occupied by the first backscatter signal based on the signal quality.
46. The method of claim 44, wherein said determining the identity of the BSC device that sent the first backscatter signal based on the time and/or frequency domain resources occupied by the first backscatter signal, comprises:
mapping the time domain and/or frequency domain resources occupied by the first backscatter signal into output values of a hash function and/or modified output values to obtain a first output value;
inputting the identification of the existing BSC equipment into a hash function to obtain an output value and/or a modified output value of the hash function corresponding to the identification of the existing BSC equipment; or determining a preset value corresponding to the identification of the existing BSC equipment; the identification of the existing BSC equipment is the pre-stored identification of the BSC equipment;
For each of the identities of the existing BSC devices, performing the steps of: determining the identity of the BSC equipment which is currently identified to send the first back scattering signal under the condition that the output value of the hash function corresponding to the current identity and/or the modified output value or the preset value are completely contained in the first output value; or determining that the current identifier does not belong to the identifier of the BSC device sending the first back scattering signal under the condition that the output value of the hash function corresponding to the current identifier and/or the modified output value or the preset value are not completely contained in the first output value.
47. The method of claim 44, wherein said determining the identity of the BSC device that sent the first backscatter signal based on the time and/or frequency domain resources occupied by the first backscatter signal comprises at least one of:
determining the bearing resource of a backscatter signal corresponding to the identification of the existing BSC equipment, wherein the identification of the existing BSC equipment is the pre-stored identification of the BSC equipment;
for each of the identities of the existing BSC devices, performing the steps of: determining the identity of BSC equipment which is currently identified as transmitting the first back scattering signal under the condition that the bearing resources of the back scattering signal corresponding to the current identity are completely contained in the time domain and/or frequency domain resources occupied by the first back scattering signal; or determining that the current identifier does not belong to the identifier of the BSC device for transmitting the first back scattering signal under the condition that the bearing resource of the back scattering signal corresponding to the current identifier is not completely contained in the time domain and/or frequency domain resource occupied by the first back scattering signal.
48. The method as recited in claim 46 or 47, wherein said method further comprises, for each of said existing BSC device identifications, after performing the steps of:
the third node sends fourth information to BSC equipment corresponding to each identifier in a first identifier set, wherein the fourth information is used for triggering BSC equipment corresponding to each identifier in the first identifier set to send a second back-scattered signal, and the first identifier set comprises identifiers of at least one BSC equipment for sending the first back-scattered signal;
receiving the second back scattering signal, and determining the identification of at least one BSC device for transmitting the second back scattering signal according to the resources and/or the content and/or the format occupied by the second back scattering signal;
the identity of at least one BSC device transmitting the second backscatter signal is taken as the identity of the BSC device transmitting the first backscatter signal through verification.
49. The method of claim 43, further comprising:
the third node obtains relevant configuration information for receiving and processing the first back-scattered signal or and/or the second back-scattered signal by at least one of:
Receiving seventh information sent by the first node, wherein the seventh information is used for indicating relevant configuration information for receiving and processing the first back scattering signal or/and the second back scattering signal;
monitoring first information and/or third information;
a pre-agreed manner.
50. The method of claim 49, wherein the associated configuration information comprises at least one of: all or part of the first configuration information, the identity of the existing BSC device, and fourth information.
51. The method of claim 45, 46 or 48, wherein the intermediate information comprises at least one of: signal quality on each candidate time-domain and/or frequency-domain resource, the time-domain and/or frequency-domain resource occupied by the first backscatter signal, the first output value, the resource and/or content and/or format occupied by the second backscatter signal.
52. A method for identifying a BSC device, comprising:
the second node receives second information sent by the first node, wherein the second information is used for indicating the second node to send an excitation signal to BSC equipment; or the second node monitors the first information and acquires the configuration related to the sending of the excitation signal;
The second node sends an excitation signal to the BSC device.
53. The method of claim 52, further comprising:
and the second node sends an excitation signal for triggering the BSC equipment to register or deregister to the BSC equipment.
54. The method of claim 52, further comprising:
and in the process that the BSC equipment transmits the first back-scattered signal, the second node transmits updated first configuration information to the BSC equipment.
55. An apparatus for identifying a BSC device, comprising:
the BSC equipment is used for sending the first configuration information to the BSC equipment according to the first back scattering signal;
a first identifying unit for determining an identity of the BSC device transmitting the first backscatter signal.
56. An apparatus for identifying a BSC device, comprising:
a third receiving unit, configured to receive first information, where the first information is used to trigger the BSC device to send a first backscatter signal;
and an eighth transmitting unit configured to transmit the first backscatter signal according to the first configuration information.
57. An apparatus for identifying a BSC device, comprising: …
A ninth receiving unit for receiving the first backscatter signal and/or the second backscatter signal;
the first feedback unit is used for determining a final result according to the first back scattering signal and/or the second back scattering signal and feeding back the final result to the first node through fifth information; or determining intermediate information according to the first back scattering signal and/or the second back scattering signal, and feeding back the intermediate information to the first node through sixth information;
wherein the final result comprises an identification of the BSC device that sent the first backscatter signal or an identification of the BSC device that sent the first backscatter signal through verification.
58. An apparatus for identifying a BSC device, comprising:
a tenth receiving unit, configured to receive second information sent by the first node, where the second information is used to instruct the second node to send an excitation signal to the BSC device; or the second node monitors the first information and acquires the configuration related to the sending of the excitation signal;
a fourteenth transmitting unit for transmitting the excitation signal to the BSC apparatus.
59. A communication device comprising a processor and a memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method of identifying a BSC device according to any one of claims 1 to 26, or the steps of the method of identifying a BSC device according to any one of claims 27 to 42, or the steps of the method of identifying a BSC device according to any one of claims 43 to 51, or the steps of the method of identifying a BSC device according to any one of claims 52 to 54.
60. A readable storage medium having stored thereon a program or instructions which, when executed by a processor, performs the steps of the method of identifying a BSC apparatus according to any one of claims 1 to 26, or the steps of the method of identifying a BSC apparatus according to any one of claims 27 to 42, or the steps of the method of identifying a BSC apparatus according to any one of claims 43 to 51, or the steps of the method of identifying a BSC apparatus according to any one of claims 52 to 54.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210844139.9A CN117478210A (en) | 2022-07-18 | 2022-07-18 | BSC equipment identification method and device and communication equipment |
| PCT/CN2023/105392 WO2024017049A1 (en) | 2022-07-18 | 2023-06-30 | Bsc device identification method and apparatus, and communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210844139.9A CN117478210A (en) | 2022-07-18 | 2022-07-18 | BSC equipment identification method and device and communication equipment |
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| CN202210844139.9A Pending CN117478210A (en) | 2022-07-18 | 2022-07-18 | BSC equipment identification method and device and communication equipment |
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| WO (1) | WO2024017049A1 (en) |
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|---|---|---|---|---|
| CN107786255A (en) * | 2016-08-30 | 2018-03-09 | 华为技术有限公司 | A kind of method, apparatus and system to be communicated with radio-frequency apparatus |
| CN112423390B (en) * | 2019-08-21 | 2024-05-07 | 华为技术有限公司 | Method and apparatus for reflective communication |
| CN113315729A (en) * | 2020-02-27 | 2021-08-27 | 华为技术有限公司 | Communication method and device |
| US20210368439A1 (en) * | 2020-05-19 | 2021-11-25 | Qualcomm Incorporated | Wlan wake up radio with backscattering |
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