CN117674979A

CN117674979A - Information transmission method and device and communication equipment

Info

Publication number: CN117674979A
Application number: CN202210995437.8A
Authority: CN
Inventors: 应祚龙; 吴凯; 李东儒
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2024-03-08
Also published as: WO2024037514A1

Abstract

The application discloses an information transmission method, which belongs to the technical field of communication, and the method of the embodiment of the application comprises the following steps: the method comprises the steps that a back-scattering communication device receives first configuration information, the back-scattering communication device reports the first information on a first transmission resource, and the first transmission resource is determined according to the first configuration information; the first configuration information includes at least one of: first time window information; first excitation carrier information; the first indication information is used for indicating at least one of time domain resource information and frequency domain resource information of the first transmission resource, or activating reserved transmission resources, wherein the time domain resources of the first transmission resource are at least part of the time domain resources of the reserved transmission resources.

Description

Information transmission method and device and communication equipment

Technical Field

The application belongs to the technical field of communication, and particularly relates to an information transmission method, an information transmission device and communication equipment.

Background

Backscatter communication (i.e., backscattering communication) refers to a Backscatter communication device that uses radio frequency signals in other devices or environments to signal modulate to transmit its own information. Conventional backscatter communication systems include a transmitting device (base station or radio frequency identification reading device) and a backscatter communication device (e.g., tag). The sending end device obtains the feedback information of the tags in an inventory mode, and the inventory operation objects are aimed at all the tags, however, in some scenes, the feedback information of most of the tags is unnecessary, and the inventory mode obtains the feedback information of the tags in a inventory mode, so that the resource waste is caused.

Disclosure of Invention

The embodiment of the application provides an information transmission method, an information transmission device and communication equipment, which can solve the problem that the existing mode for acquiring tag feedback information can cause resource waste.

In a first aspect, there is provided an information transmission method, including:

the backscatter communication device receives first configuration information;

the backscatter communication device reports first information on a first transmission resource, the first transmission resource being determined according to first configuration information;

wherein the first configuration information includes at least one of:

first time window information;

first excitation carrier information;

the first indication information is used for indicating at least one of time domain resource information and frequency domain resource information of the first transmission resource, or activating reserved transmission resources, wherein the time domain resources of the first transmission resource are at least part of the time domain resources of the reserved transmission resources.

In a second aspect, there is provided an information transmission method, including:

the radio frequency identification reading device sends first configuration information;

the radio frequency identification reading device acquires first information which is reported by the backscatter communication device on a first transmission resource, and the first transmission resource is determined according to the first configuration information;

Wherein the first configuration information includes at least one of: first time window information;

first excitation carrier information;

In a third aspect, there is provided an information transmission apparatus including:

the first receiving module is used for receiving the first configuration information;

the first reporting module is used for reporting first information on a first transmission resource, and the first transmission resource is determined according to the first configuration information;

wherein the first configuration information includes at least one of:

first time window information;

first excitation carrier information;

In a fourth aspect, there is provided an information transmission apparatus including:

the first sending module is used for sending the first configuration information;

the first acquisition module is used for acquiring first information, wherein the first information is reported by the backscatter communication equipment on a first transmission resource, and the first transmission resource is determined according to the first configuration information;

wherein the first configuration information includes at least one of:

first time window information;

first excitation carrier information;

In a fifth aspect, a terminal, in particular a backscatter communication device, is provided, comprising a processor and a memory storing a program or instructions executable on the processor, which program or instructions, when executed by the processor, implement the steps of the method as described in the first aspect.

In a sixth aspect, a terminal, in particular a backscatter communication device, is provided, comprising a processor and a communication interface, wherein the communication interface is configured to receive first configuration information; the processor is used for reporting first information on a first transmission resource, and the first transmission resource is determined according to first configuration information;

wherein the first configuration information includes at least one of:

first time window information;

first excitation carrier information;

In a seventh aspect, a network side device, in particular a radio frequency identification reading device, is provided, comprising a processor and a memory, the memory storing a program or instructions executable on the processor, which program or instructions, when executed by the processor, implement the steps of the method according to the second aspect.

An eighth aspect provides a network side device, where the network side device is specifically a radio frequency identification reading device, and includes a processor and a communication interface, where the communication interface is used to send first configuration information; acquiring first information which is reported by the back scattering communication equipment on a first transmission resource, wherein the first transmission resource is determined according to the first configuration information;

first excitation carrier information;

In a ninth aspect, there is provided an information transmission system including: a backscatter communications device operable to perform the steps of the method as described in the first aspect and a radio frequency identification reading device operable to perform the steps of the method as described in the second aspect.

In a tenth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method according to the first aspect or performs the steps of the method according to the second aspect.

In an eleventh aspect, there is provided a chip comprising a processor and a communication interface coupled to the processor, the processor being for running a program or instructions to implement the method according to the first aspect or to implement the method according to the second aspect.

In a twelfth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to implement the steps of the method as described in the first aspect, or to implement the steps of the method as described in the second aspect.

In the embodiment of the application, the back-scattering communication device receives the first configuration information and reports the first information on the first transmission resource determined according to the first configuration information, namely the back-scattering communication device can report the first information automatically according to the requirement, the radio frequency identification reading device is not required to count for multiple times, meanwhile, the back-scattering communication device is prevented from responding frequently, the waste of resources is effectively avoided, and the resource utilization rate of the system is improved.

Drawings

FIG. 1 illustrates a block diagram of a communication system to which embodiments of the present application may be applied;

fig. 2 shows one of flow diagrams of an information transmission method according to an embodiment of the present application;

FIG. 3 shows a schematic diagram of continuous wave transmission in an embodiment of the present application;

fig. 4 is a schematic diagram illustrating reservation of transmission resources in an embodiment of the present application;

fig. 5 is a schematic diagram illustrating a first transmission resource in an embodiment of the present application;

FIG. 6 is a second flow chart of an information transmission method according to an embodiment of the present disclosure;

fig. 7 shows one of block diagrams of an information transmission device according to an embodiment of the present application;

fig. 8 shows a block diagram of a communication device according to an embodiment of the present application;

fig. 9 shows a block diagram of a terminal according to an embodiment of the present application;

FIG. 10 is a second schematic block diagram of an information transmission device according to an embodiment of the present disclosure;

fig. 11 shows a block diagram of a network device according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments 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 furniture), 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 a base station, a WLAN access point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and the base station is 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 a base station in an NR system is described as an example, and the specific type of the base station is not limited.

In order to enable those skilled in the art to better understand the embodiments of the present application, the following description is provided.

1. Backscatter communications (Backscatter Communication, BSC);

backscatter communication refers to the transmission of its own information by signal modulation of radio frequency signals in other devices or environments by a backscatter communication device. A backscatter communications device, which may be:

(1) A backscatter communication device in conventional radio frequency identification (Radio Frequency Identification, RFID), typically a Tag, belonging to a Passive IoT device (Passive-IoT);

(2) Semi-passive (semi-passive) tags, the downlink receiving or uplink reflection of which has a certain amplifying capability;

(3) Tag (active tag) with active transmission capability, such terminals may send information to a base station (gNB) or reader (reader) independent of reflection of the incoming signal.

2. Information transmission between gNB/reader and Tag in RFID;

the current protocol design of ultra high frequency radio frequency identification (UHF RFID) requires a reader to send a Query command (Query) and then a Tag (Tag) responds (Reply) in a checking mode, namely, a 16-bit random number is generated to the reader. And then the reader sends the sequence to the Tag through an ACK instruction, and the Tag sends related data to the reader.

3. A backscatter application scenario;

gNB/reader sends Continuous Waves (CW) and control commands to Tag; wherein the type of control command includes at least one of: select, inventory, access. The network receives the feedback information of the Tag.

4. A beacon (beacon) signal;

the purpose of the beacon signal is:

the terminal may move during the process of detecting the low-power consumption wake-up signal, or, because of environmental change, moves out of the coverage area of the low-power consumption wake-up signal, so that the wake-up signal sent by the network cannot be received.

Therefore, one of the functions of the beacon signal is to be used for measurement, so that the tracking of the terminal to the network signal quality is realized, and the problem of service loss caused by the movement of the terminal out of the coverage range of the wake-up signal is avoided.

The purpose of the beacon signal is two:

at 802.11ba WUR beacon signal usage:

in order to keep synchronization between the low power consumption wake-up receiver and an Access Point (AP), the 802.11ba adopts a periodical WUR beacon signal to transmit time information, type dependent control of WUR beacon MAC frame carries [5:16] total 12 bits of information in 64 bits of a TSF clock (timer) of the AP, and after receiving the 12 bits of information, a user updates the TSF timer local to the user according to a time update criterion defined by the 11ba, thereby achieving the purpose of synchronization with the AP. The transmission period of WUR beacon and the offset of the transmission start position are indicated by operation element transmitted by the AP, the period being the minimum number of TSF time units between two beacon transmissions, and the start position being the number of TSF time units offset from TSF 0. When CSMA delays occur, WUR beacon delays transmission in the current period, but is still transmitted in a subsequent period at a position determined by the transmission period of WUR beacon and the transmission start position.

The WUR beacon signal is also used as a link hold signal, and when no WUR beacon signal is received for a period of time, the 802.11ba STA must perform WUR search or switch to a mode where the master communication module wakes up. When the wake-up signal configures the DRX cycle, that is, the 802.11ba wakes up according to the DRX cycle to monitor the wake-up signal, the wake-up signal is also used as the link-hold signal, and in the DRX cycle where the wake-up signal is not sent, the 802.11ba AP may send WUR beacon to use as the link-hold signal. Wherein the time when the link hold signal is not received is determined by the user implementation.

The gNB/reader acquires the state information of the tags through checking, all the tags need to be checked, feedback information of a plurality of tags is unnecessary in part of application scenes (the application scene 1 is described below), and the mode of acquiring the tag information through checking is inefficient.

Application scenario 1: consider an application scenario of a fire sensor (sensor), in which a passive tag is deployed. The passive tags are low in cost, and a large amount of deployment can be realized in the scene. The gNB/reader acquires tag information in an inventory mode, and the specific situation of each tag cannot be known from the gNB/reader, so that whether fire occurs in the scene or not can be known only by inventory of all tags during inventory. Meanwhile, when the fire occurrence event is considered to be a small probability event, the information fed back by counting or a plurality of tags is invalid from the perspective of the gNB/reader, and the gNB/reader does not need to react further. For example, when no fire alarm exists, the gNB/reader does not need to respond, and in practical application, the situation that a plurality of times of checking to obtain most tag feedback is also the condition of no fire alarm exists. In this scenario, inventory efficiency is low and most of inventory is invalid information, resulting in waste of resources.

The information transmission method provided by the embodiment of the application is described in detail below by some embodiments and application scenarios thereof with reference to the accompanying drawings.

As shown in fig. 2, an embodiment of the present application provides an information transmission method, including:

step 201: the backscatter communication device receives first configuration information;

wherein the first configuration information includes at least one of:

first time window information associated with at least one of time domain resources and frequency domain resources of the first transmission resource;

first excitation carrier information associated with at least one of frequency domain resources and time domain resources of the first transmission resource;

Step 202: the backscatter communication device reports first information on a first transmission resource, the first transmission resource being determined in accordance with first configuration information.

Alternatively, the backscatter communication device may be embodied as a Tag (Tag), alternatively an active Tag with active transmission capability. Or the tag is a passive tag, and the passive tag can use an excitation carrier to report uplink. The backscatter communication device may perform an autonomous reporting on the reporting first transmission resource according to an autonomous reporting requirement. That is, in this embodiment of the present application, the first information is not a report triggered by the radio frequency identification reading device (for example, the radio frequency identification reading device sends a query request, and the backscatter communication device reports according to the query request), where the backscatter communication device reports on the first transmission resource when the preset condition is satisfied.

Alternatively, the radio frequency identification reading device may be specifically a base station (gNB) or a reader (reader).

Optionally, the first information includes at least one of a report request and at least part of report data (may be part of report data or all of report data) corresponding to the report request.

According to the method, the back scattering communication equipment receives the first configuration information and reports the first information on the first transmission resource determined according to the first configuration information, namely the back scattering communication equipment can report automatically according to the requirement through the first transmission resource, radio frequency identification reading equipment is not required to count for multiple times, meanwhile, the back scattering communication equipment is prevented from responding frequently, waste of resources is effectively avoided, and the resource utilization rate of a system is improved.

Optionally, the time domain resource of the first transmission resource includes: transmitting a starting time domain position of the first information;

alternatively, the frequency domain resource of the first transmission resource includes at least one of:

a back scattering carrier frequency corresponding to the first transmission resource;

and the bandwidth of the backscattering communication channel corresponding to the first transmission resource.

The first transmission resource in the embodiment of the present application is specifically a backscatter transmission resource. Optionally, after determining the first transmission resource according to the first configuration information, the method further comprises:

and carrying out back scattering processing on the first information according to the first transmission resource.

Here, the backscatter communication device performs reporting of the first information by backscatter based on the first transmission resource.

Optionally, the first time window information includes at least one of:

a starting position of the first time window;

an end position of the first time window;

the time length corresponding to the first time window;

a first time offset, the first time offset being an offset relative to a target position of the first time window; the target position may be a starting position or an ending position or an intermediate position of the first time window, etc.;

Alternatively, the first excitation carrier information includes at least one of:

a carrier frequency of the first excitation carrier;

the bandwidth of the backscatter communication channel in which the first excitation carrier is located;

the duration of the first excitation carrier.

Optionally, the time length corresponding to the first time window is related to the reporting type corresponding to the first information.

For example, the length of the first time window corresponding to the two-step (2-step) report type is shorter than the length of the first time corresponding to the four-step (4-step) report type, or the length of the first time window corresponding to the non-contention-based report type is shorter than the length of the first time window corresponding to the contention-based report type.

It should be noted that, in the embodiment of the present application, the reporting type corresponding to the first information is not limited to the 2-step reporting type or the 4-step reporting type. If the M-step report type is adopted, the length of the first time window is related to M, and an alternative implementation manner is that the length of the first time window is positively related to M, that is, the larger M is, the longer the length of the first time window is, and M is a positive integer.

Optionally, the method further comprises at least one of:

a first item: determining a starting time domain position for transmitting the first information according to the starting position of the first time window or the first time offset or the transmission time in the first time window;

The second item: determining a back scattering carrier frequency of the first information according to the carrier frequency of the first excitation carrier;

third item: and determining the bandwidth of the back scattering communication channel according to the bandwidth of the back scattering communication channel where the first excitation carrier is located.

For the first item described above: the backscatter communication device may take a starting position of the first time window as a starting time domain position to transmit the first information.

Or, according to the first time offset, obtaining the initial time domain position for transmitting the first information. For example, a position that is spaced a time period backward from the start position of the first time window by a time period of T is a start time domain position at which the first information is transmitted, or a position that is spaced a time period forward from the end position of the first time window by a time period of T is a start time domain position at which the first information is transmitted.

Alternatively, the first time window includes at least one transmission opportunity (Transmission Occasion, TO), and the backscatter communication device may use a start position corresponding TO any one transmission opportunity (or a transmission opportunity that is pre-configured or agreed by a protocol) as a start time domain position for transmitting the first information.

For the second item, the backscatter communication device may use the carrier of the first carrier as the backscatter carrier frequency of the first information, or may add or subtract a preset frequency value based on the carrier frequency of the first excitation carrier, to obtain the backscatter carrier frequency of the first information.

For the third item: the back scattering communication device may use the bandwidth of the back scattering communication channel where the first excitation carrier is located as the bandwidth of the back scattering communication channel, or may add or subtract a preset bandwidth value based on the bandwidth of the back scattering communication channel where the first excitation carrier is located, to obtain the bandwidth of the back scattering communication channel.

Optionally, the first time offset is related to a time required to provide a first energy to the backscatter, the first energy being an energy required by the backscatter communication device to transmit first information; i.e. the first excitation carrier duration is related to the shortest time required for providing the backscatter communication device with the first energy, e.g. the first excitation carrier duration is greater than or equal to the shortest time. Here, the duration of the first excitation carrier is set to be greater than or equal to the time T (T is the minimum charging time required by tag to transmit the first information), so that energy waste caused by constant transmission of CW by the gNB/reader can be avoided on the premise of ensuring the minimum power required by the transmission of the first information. Optionally, the duration of the first excitation carrier is related to the reporting type corresponding to the first information;

Alternatively, the first time offset is related to the data amount of the first information. I.e. the first time offset is related to the amount of first information transmitted by the backscatter communication device or whether data is carried, i.e. the first excitation carrier duration is related to the amount of first information transmitted by the backscatter communication device or whether data is carried. The larger the data amount of the first information, the longer the minimum charging time required to transmit the first information, i.e. the longer the duration of the first excitation carrier.

Optionally, the method of the embodiment of the present application further includes:

a first excitation carrier is continuously or periodically received from a starting position of the first time window or from a position spaced from the starting position of the first time window by a second time offset according to a duration of the first excitation carrier.

Here, the first excitation carrier is received according to a duration of the first excitation carrier by which the backscatter communication device can be charged, thereby enabling the Passive-IoT to be autonomously reported on the first transmission resource.

In one embodiment of the present application, there are two transmission modes of Continuous Waves (CW) within a first time window: persistent or periodic, as shown in fig. 3, where (a) is a persistent transmission and (b) is a periodic transmission.

Taking (a) as an example, msg1 is the first information, where the starting position of Msg1 transmission and the starting position of the first time window are separated by a fixed time T, and the gNB/reader transmission CW has the effect of supplying power to the tag, so that the time interval T is at least greater than the minimum charging time required by the tag to transmit Msg 1. Another case is that the starting position of the Msg1 transmission is the ending position of the first time window forward by a fixed time T.

As a first alternative implementation manner, in a case where the first configuration information includes first indication information, and the first indication information is used to indicate at least one of time domain resource information and frequency domain resource information of the first transmission resource, the first indication information includes at least one of:

a time domain starting position of the first transmission resource;

a time offset of a time domain starting position of the first transmission resource relative to the first time;

a backscatter carrier frequency corresponding to the first transmission resource;

Bandwidth of the backscatter transmission channel corresponding to the first transmission resource;

a transmission opportunity, the transmission opportunity being associated with a time domain starting position of the first transmission resource.

Optionally, the first time is a time of protocol engagement or network configuration.

As a second alternative implementation manner, the first configuration information includes first indication information, and the first indication information is used for activating reserved transmission resources;

the method further comprises the steps of:

and determining a time domain starting position of the first transmission resource according to the activation time of the reserved transmission resource, wherein the activation time of the reserved transmission resource is determined according to the time when the backscatter communication equipment receives the first indication information.

In this implementation manner, the activation time of the reserved transmission resource may be determined as the time domain start position of the first transmission resource, or a position obtained by adding a preset time interval to the activation time of the reserved transmission resource may be determined as the time domain start position of the first transmission resource. Optionally, the time when the first indication information is received is determined as the activation time of the reserved transmission resource, or the activation time indicated by the first indication information is determined as the activation time of the reserved transmission resource.

Optionally, the reserved transmission resource is preconfigured by the network or indicated by the network side device.

Optionally, in an embodiment of the present application, the method further includes:

and acquiring the first indication information through control signaling or a downlink reference signal.

Optionally, the downlink reference signal is a periodic downlink reference signal, or the downlink reference signal is a downlink reference signal with a synchronization function. For example, the downlink reference signal is a beacon signal.

For example, the starting time domain position of the first information is the time when the tag receives the beacon signal or the time when the tag is separated from the time when the beacon signal is received by a fixed time T1.

Optionally, the method of the embodiment of the present application further includes at least one of:

determining the period of the first transmission resource according to the period of the downlink reference signal;

and determining the synchronization information of the first transmission resource according to the synchronization information of the downlink reference signal.

As an example, the period of the downlink reference signal is taken as the period of the first transmission resource. As another example, the period of the first transmission resource is obtained after adding or subtracting a preset duration value to or from the period of the downlink reference signal.

As an example, the synchronization information of the downlink reference signal is determined as the synchronization information of the first transmission resource.

Optionally, the back-scattering communication device reports the first information on the first transmission resource, including:

and the backscatter communication equipment reports the first information on a first transmission resource under the condition that the report condition is met.

Optionally, the reporting condition includes the following conditions:

the backscatter communication device presence data needs to be reported (e.g., tag detected fire).

Optionally, after receiving the first configuration information, the backscatter communication device further includes:

and the backscatter communication equipment does not report the first information under the condition that the report condition is not satisfied.

In an embodiment of the present application, a reserved transmission resource (reserved uplink initiated reporting resource) is determined, and the uplink reporting initial resource location is notified or activated by a control command or a downlink reference signal. As shown in fig. 4, the gNB/reader reserves a section of uplink resource for reporting initiated by the tag uplink, and notifies the resource location of the tag first information reporting by a control command or a downlink reference signal. The control command in fig. 4 may be replaced by a downlink reference signal.

Taking the beacon signal as an example, the gcb periodically sends the beacon signal, as shown in fig. 5, where the period from beacon4 to beacon7 is a reserved uplink reporting resource period, the gcb sends the beacon4 signal (including notifying the resource position of the first information report of the tag), and the tag sends the first information after receiving the beacon4 signal for a certain time T or directly.

In the embodiment of the application, the gNB/reader continuously or periodically transmits the CW wave, and the tag can report information autonomously according to the requirement. For example, the tag can actively report when detecting a fire, otherwise, the tag does not report. In the application scene, the gNB/reader does not need to count the tag, and only needs to further respond according to the information reported by the tag, and further, the occurrence of abnormal conditions, such as fire, is indicated as long as the tag selects self-reporting. The gNB/reader side avoids multiple checking and the tag side avoids frequent response. And the feedback of the tag is effective information, so that the efficiency is greatly improved.

It should be noted that, the application scenario of the method of the embodiment of the present application may be extended to a scenario where the occurrence probability of abnormal situations such as temperature, motion, vibration, air quality, humidity or radiation is small, but the occurrence result of the abnormal event is serious.

Because the tag in the Backscatter communication system has a simple structure and does not have the capability of maintaining time fine synchronization, transmission resources required by the reporting of the tag uplink information have the following two benefits by defining a time window:

(1) Some unsynchronized margins are allowed on the time resource, thus alleviating the problem that the tag does not have the ability to maintain fine synchronization.

(2) The reader sustainability transmits the excitation carrier for backscatter communications within the time window.

Further, if the beacon signal is used to indicate the transmission resource of the uplink report of the tag, the second purpose of the beacon signal can be utilized: and (5) a synchronization function. I.e. using the beacon signal as a time reference, a coarse synchronization function can be achieved.

As shown in fig. 6, the embodiment of the present application further provides an information transmission method, including:

step 601: the radio frequency identification reading device sends first configuration information;

step 602: the radio frequency identification reading device acquires first information which is reported by the backscatter communication device on a first transmission resource, and the first transmission resource is determined according to the first configuration information;

wherein the first configuration information includes at least one of:

first time window information;

first excitation carrier information;

The rfid reading device may be embodied as a base station (gNB) or a reader.

In the embodiment of the application, the radio frequency identification reading device sends the first configuration information, the back scattering communication device determines the first transmission resource for transmitting the first information according to the first configuration information, and the back scattering communication device can automatically report according to the requirement through the first transmission resource, so that the radio frequency identification reading device does not need to count for multiple times, meanwhile, the back scattering communication device is prevented from responding frequently, the waste of resources is effectively avoided, and the resource utilization rate of the system is improved.

Optionally, the first time window information includes at least one of:

a starting position of the first time window;

an end position of the first time window;

the time length corresponding to the first time window;

a first time offset, the first time offset being an offset relative to a target position of the first time window;

a carrier frequency of the first excitation carrier;

the duration of the first excitation carrier.

Optionally, the first time offset is related to a time required to provide a first energy to the backscatter, the first energy being an energy required by the backscatter communication device to transmit first information;

Alternatively, the first time offset is related to the data amount of the first information.

the first excitation carrier is continuously or periodically transmitted from a starting position of the first time window or from a position spaced from the starting position of the first time window by a second time offset according to a duration of the first excitation carrier.

Optionally, the first indication information includes at least one of:

a time domain starting position of the first transmission resource;

Optionally, the radio frequency identification reading device sends the first configuration information, including:

and sending the first indication information through control signaling or downlink reference signals.

Optionally, the downlink reference signal is a periodic downlink reference signal, or the downlink reference signal is a downlink reference signal with a synchronization function.

According to the information transmission method provided by the embodiment of the application, the execution main body can be an information transmission device. In the embodiment of the present application, an information transmission device is described by taking an example in which the information transmission device performs an information transmission method.

As shown in fig. 7, an embodiment of the present application provides an information transmission apparatus 700 applied to a backscatter communication device, the apparatus including:

a first receiving module 701, configured to receive first configuration information;

a first reporting module 702, configured to report first information on a first transmission resource, where the first transmission resource is determined according to first configuration information;

wherein the first configuration information includes at least one of:

First time window information;

first excitation carrier information;

Optionally, the first time window information includes at least one of:

a starting position of the first time window;

an end position of the first time window;

the time length corresponding to the first time window;

A carrier frequency of the first excitation carrier;

the duration of the first excitation carrier.

Optionally, the apparatus of the embodiment of the present application further includes: a first determination module for performing at least one of:

determining a starting time domain position for transmitting the first information according to the starting position of the first time window or the first time offset or the transmission time in the first time window;

determining a back scattering carrier frequency of the first information according to the carrier frequency of the first excitation carrier;

and determining the bandwidth of the back scattering communication channel according to the bandwidth of the back scattering communication channel where the first excitation carrier is located.

Optionally, the apparatus of the embodiment of the present application further includes:

and the second receiving module is used for continuously or periodically receiving the first excitation carrier from the starting position of the first time window according to the duration of the first excitation carrier, or continuously or periodically receiving the first excitation carrier from the position which is separated from the starting position of the first time window by a second time offset.

Optionally, in a case that the first configuration information includes first indication information, and the first indication information is used to indicate at least one of time domain resource information and frequency domain resource information of the first transmission resource, the first indication information includes at least one of:

a time domain starting position of the first transmission resource;

Optionally, the first configuration information includes first indication information, and the first indication information is used for activating reserved transmission resources; the apparatus further comprises: and the second determining module is used for determining the time domain starting position of the first transmission resource according to the activation time of the reserved transmission resource, wherein the activation time of the reserved transmission resource is determined according to the time when the backscatter communication equipment receives the first indication information or according to the activation time indicated by the first indication information.

and the second acquisition module is used for acquiring the first indication information through control signaling or downlink reference signals.

a third determination module for performing at least one of:

Optionally, the first information includes at least one of:

reporting a request;

at least part of reporting data corresponding to the reporting request.

Optionally, the first reporting module is configured to report the first information on a first transmission resource under the condition that a reporting condition is satisfied.

Optionally, the apparatus of the embodiment of the present application further includes: and the processing module is used for not reporting the first information under the condition that the reporting condition is not met.

In the embodiment of the application, the back-scattering communication device receives the first configuration information and reports the first information on the first transmission resource determined according to the first configuration information, namely, the back-scattering communication device can report the first information automatically according to the requirement, the radio frequency identification reading device is not required to count for multiple times, meanwhile, the back-scattering communication device is prevented from responding frequently, the waste of resources is effectively avoided, and the resource utilization rate of the system is improved.

The information transmission 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 an 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 application are not specifically limited.

The information transmission device provided in the embodiment of the present application can implement each process implemented by the embodiments of the methods of fig. 2 to 5, and achieve the same technical effects, so that repetition is avoided, and no further description is provided herein.

Optionally, as shown in fig. 8, the embodiment of the present application further provides a communication device 800, including a processor 801 and a memory 802, where the memory 802 stores a program or instructions that can be executed on the processor 801, for example, when the communication device 800 is a backscatter communication device, the program or instructions, when executed by the processor 801, implement the steps of the method embodiment executed by the backscatter communication device, and achieve the same technical effects. When the communication device 800 is a rfid reading device, the program or the instruction, when executed by the processor 801, implements the steps of the method embodiment executed by the rfid reading device, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

The embodiment of the application also provides a terminal, in particular a back scattering communication device, which comprises a processor and a communication interface, wherein the communication interface is used for receiving the first configuration information; the processor is used for reporting first information on a first transmission resource, and the first transmission resource is determined according to first configuration information;

wherein the first configuration information includes at least one of:

first time window information;

first excitation carrier information;

the first indication information is used for indicating at least one of time domain resource information and frequency domain resource information of the first transmission resource, or activating reserved transmission resources, wherein the time domain resources of the first transmission resource are at least part of the time domain resources of the reserved transmission resources. The terminal embodiment corresponds to the method embodiment on the back-scattering communication equipment side, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment and can achieve the same technical effect. Specifically, fig. 9 is a schematic diagram of a hardware structure of a terminal (specifically, a backscatter communication device) that implements an embodiment of the present application.

The terminal 900 includes, but is not limited to: at least some of the components of the radio frequency unit 901, the network module 902, the audio output unit 903, the input unit 904, the sensor 905, the display unit 906, the user input unit 907, the interface unit 908, the memory 909, and the processor 910, etc.

Those skilled in the art will appreciate that the terminal 900 may further include a power source (e.g., a battery) for powering the various components, and the power source may be logically coupled to the processor 910 by a power management system so as to perform functions such as managing charging, discharging, and power consumption by the power management system. The terminal structure shown in fig. 9 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine some 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 904 may include a graphics processing unit (Graphics Processing Unit, GPU) 9041 and a microphone 9042, with the graphics processor 9041 processing image data of still pictures or video obtained by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The display unit 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 907 includes at least one of a touch panel 9071 and other input devices 9072. Touch panel 9071, also referred to as a touch screen. The touch panel 9071 may include two parts, a touch detection device and a touch controller. Other input devices 9072 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 a network side device, the radio frequency unit 901 may transmit the downlink data to the processor 910 for processing; in addition, the radio frequency unit 901 may send uplink data to the network side device. Typically, the radio frequency unit 901 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 909 may be used to store software programs or instructions as well as various data. The memory 909 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage 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 909 may include a volatile memory or a nonvolatile memory, or the memory 909 may include both volatile and nonvolatile memories. 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 (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 909 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

Processor 910 may include one or more processing units; optionally, the processor 910 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 910.

The radio frequency unit 901 is configured to receive first configuration information;

a processor 910, configured to report first information on a first transmission resource, where the first transmission resource is determined according to first configuration information;

wherein the first configuration information includes at least one of:

first time window information;

first excitation carrier information;

Optionally, the first time window information includes at least one of:

a starting position of the first time window;

an end position of the first time window;

the time length corresponding to the first time window;

a carrier frequency of the first excitation carrier;

the duration of the first excitation carrier.

Optionally, the processor 910 is further configured to perform at least one of:

Optionally, the radio frequency unit 901 is further configured to:

A time domain starting position of the first transmission resource;

Optionally, the first configuration information includes first indication information, and the first indication information is used for activating reserved transmission resources;

processor 910 is further configured to:

and determining a time domain starting position of the first transmission resource according to the activation time of the reserved transmission resource, wherein the activation time of the reserved transmission resource is determined according to the time when the backscatter communication equipment receives the first indication information or according to the activation time indicated by the first indication information.

Optionally, the radio frequency unit 901 is further configured to:

Optionally, the processor 910 is further configured to perform at least one of:

Optionally, the radio frequency unit 901 is further configured to:

and reporting the first information on the first transmission resource under the condition that the reporting condition is met.

Optionally, the radio frequency unit 901 is further configured to:

and under the condition that the reporting condition is not met, not reporting the first information.

Optionally, the first information includes at least one of:

reporting a request;

at least part of reporting data corresponding to the reporting request.

As shown in fig. 10, the embodiment of the present application further provides an information transmission apparatus 1000, including:

a first sending module 1001, configured to send first configuration information;

a first obtaining module 1002, configured to obtain first information, where the first information is reported by a backscatter communication device on a first transmission resource, and the first transmission resource is determined according to the first configuration information;

first excitation carrier information;

Optionally, the first time window information includes at least one of:

a starting position of the first time window;

an end position of the first time window;

the time length corresponding to the first time window;

a carrier frequency of the first excitation carrier;

the duration of the first excitation carrier.

and the second sending module is used for continuously or periodically sending the first excitation carrier from the starting position of the first time window according to the duration of the first excitation carrier, or continuously or periodically sending the first excitation carrier from the position separated from the starting position of the first time window by a second time offset.

Optionally, the first indication information includes at least one of:

a time domain starting position of the first transmission resource;

Optionally, the first sending module is configured to send the first indication information through a control signaling or a downlink reference signal.

The embodiment of the application also provides network side equipment, in particular radio frequency identification reading equipment, which comprises a processor and a communication interface, wherein the communication interface is used for sending first configuration information; acquiring first information which is reported by the back scattering communication equipment on a first transmission resource, wherein the first transmission resource is determined according to the first configuration information;

first excitation carrier information;

the first indication information is used for indicating at least one of time domain resource information and frequency domain resource information of the first transmission resource, or activating reserved transmission resources, wherein the time domain resources of the first transmission resource are at least part of the time domain resources of the reserved transmission resources. The network side device embodiment corresponds to the method embodiment executed by the radio frequency identification reading device, and each implementation process and implementation manner 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 a network side device, which is specifically a radio frequency identification reading device. As shown in fig. 11, the network side device 1100 includes: an antenna 111, a radio frequency device 112, a baseband device 113, a processor 114 and a memory 115. The antenna 111 is connected to a radio frequency device 112. In the uplink direction, the radio frequency device 112 receives information via the antenna 111, and transmits the received information to the baseband device 113 for processing. In the downlink direction, the baseband device 113 processes information to be transmitted, and transmits the processed information to the radio frequency device 112, and the radio frequency device 112 processes the received information and transmits the processed information through the antenna 111.

The method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 113, where the baseband apparatus 113 includes a baseband processor.

The baseband apparatus 113 may, for example, include at least one baseband board, where a plurality of chips are disposed, as shown in fig. 11, where one chip, for example, a baseband processor, is connected to the memory 115 through a bus interface, so as to call a program in the memory 115 to perform the network device operation shown in the above method embodiment.

The network-side device may also include a network interface 116, such as a common public radio interface (common public radio interface, CPRI).

Specifically, the network side device 1100 of the embodiment of the present invention further includes: instructions or programs stored in the memory 115 and capable of running on the processor 114, the processor 114 invokes the instructions or programs in the memory 115 to perform the method performed by the modules shown in fig. 10, and achieve the same technical effects, and are not repeated here.

The embodiment of the application further provides a readable storage medium, on which a program or an instruction is stored, where the program or the instruction realizes each process of the above embodiment of the information transmission method when executed by a processor, 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 application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used for running a program or an instruction, so that each process of the above information transmission method embodiment can be implemented, and the same technical effect can be achieved, so that repetition is avoided, and no redundant description is provided 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 above-mentioned embodiments of the information transmission method, and achieve the same technical effects, so that repetition is avoided, and details are not repeated herein.

The embodiment of the application also provides an information transmission system, which comprises: the back scattering communication device can be used for executing the steps of the information transmission method at the back scattering communication device side, and the radio frequency identification reading device can be used for executing the steps of the information transmission method at the radio frequency identification reading device side.

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 a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method 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 and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. An information transmission method, comprising:

the backscatter communication device receives first configuration information;

wherein the first configuration information includes at least one of:

first time window information;

first excitation carrier information;

2. The method of claim 1, wherein the time domain resource of the first transmission resource comprises: transmitting a starting time domain position of the first information;

3. The method according to claim 1 or 2, wherein the first time window information comprises at least one of:

a starting position of the first time window;

an end position of the first time window;

the time length corresponding to the first time window;

a carrier frequency of the first excitation carrier;

the duration of the first excitation carrier.

4. The method of claim 3, wherein a length of time corresponding to the first time window is related to a reporting type corresponding to the first information.

5. A method according to claim 3, further comprising at least one of:

6. A method according to claim 3, wherein the first time offset is related to the time required to provide the backscatter with first energy required for the backscatter communication device to transmit first information;

7. A method according to claim 3, further comprising:

8. The method of claim 1, wherein, in a case where the first configuration information includes first indication information, and the first indication information is used to indicate at least one of time domain resource information and frequency domain resource information of the first transmission resource, the first indication information includes at least one of:

a time domain starting position of the first transmission resource;

9. The method of claim 1, wherein the first configuration information comprises first indication information, and wherein the first indication information is used to activate reserved transmission resources;

the method further comprises the steps of:

10. The method according to claim 1, 8 or 9, wherein the method further comprises:

11. The method of claim 10, wherein the downlink reference signal is a periodic downlink reference signal or the downlink reference signal is a downlink reference signal with a synchronization function.

12. The method of claim 11, further comprising at least one of:

13. The method of claim 1, wherein the back-scattering communication device reporting the first information on the first transmission resource comprises:

14. The method of claim 1, wherein after the backscatter communication device receives the first configuration information, further comprising:

And the backscatter communication equipment does not report the first information under the condition that the report condition is not met.

15. The method of claim 1, wherein the first information comprises at least one of:

reporting a request;

at least part of reporting data corresponding to the reporting request.

16. A method of resource processing, comprising:

first excitation carrier information;

17. The method of claim 16, wherein the time domain resource of the first transmission resource comprises: transmitting a starting time domain position of the first information;

18. The method according to claim 16 or 17, wherein the first time window information comprises at least one of:

a starting position of the first time window;

an end position of the first time window;

the time length corresponding to the first time window;

a carrier frequency of the first excitation carrier;

the duration of the first excitation carrier.

19. The method of claim 18, wherein the length of time corresponding to the first time window is related to a type of reporting corresponding to the first information.

20. The method of claim 18, wherein the first time offset is related to a time required to provide a first energy to the backscatter, the first energy being an energy required by the backscatter communication device to transmit a first information;

21. The method as recited in claim 18, further comprising:

22. The method of claim 16, wherein the first indication information comprises at least one of:

a time domain starting position of the first transmission resource;

23. The method of claim 16, wherein the radio frequency identification reading device transmitting the first configuration information comprises:

24. The method of claim 23, wherein the downlink reference signal is a periodic downlink reference signal or the downlink reference signal is a downlink reference signal with a synchronization function.

25. An information transmission apparatus, comprising:

wherein the first configuration information includes at least one of:

first time window information;

first excitation carrier information;

26. The apparatus of claim 25, wherein the time domain resources of the first transmission resource comprise: transmitting a starting time domain position of the first information;

27. A resource processing apparatus, comprising:

wherein the first configuration information includes at least one of:

first time window information;

first excitation carrier information;

28. A communication device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the resource processing method of any of claims 1 to 15, or the steps of the resource processing method of any of claims 16 to 24.

29. A readable storage medium, wherein a program or instructions is stored on the readable storage medium, which when executed by a processor, implements the steps of the resource processing method of any of claims 1 to 15, or the steps of the resource processing method of any of claims 16 to 24.