CN116886250A

CN116886250A - Information transmission method, device, terminal and network side equipment

Info

Publication number: CN116886250A
Application number: CN202210311875.8A
Authority: CN
Inventors: 黄伟; 姜大洁
Original assignee: Vivo Software Technology Co Ltd
Current assignee: Vivo Software Technology Co Ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2023-10-13
Also published as: WO2023185790A1

Abstract

The application discloses an information transmission method, an information transmission device, a terminal and network side equipment, which belong to the field of mobile communication, and the information transmission method of the embodiment of the application comprises the following steps: the method comprises the steps that a third device obtains indication information sent by a first device and a second device, wherein the indication information is used for indicating the third device to perform back scattering transmission; the third equipment acquires signal transmission parameters of the backscatter transmission according to the indication information; the third device sends a first signal to the first device and/or sends a second signal to the second device according to the signal transmission parameters; the first signal and/or the second signal are/is a back scattering signal modulated based on a fourth signal, the fourth signal is a signal sent by the first device to the fourth device, and the third device is a device for modulating information on a carrier wave sent by the fourth signal or other devices to perform back scattering transmission.

Description

Information transmission method, device, terminal and network side equipment

Technical Field

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

Background

The future 6G communication network needs to support massive everything interconnection, wherein the number of the equipment of the Internet of things reaches the trillion level, and the connection density is improved by 10-100 times compared with that of 5G, and reaches 10-100 pieces/m < 2 >. The mass internet of things devices provide new challenges for both cost and power consumption. Cellular networking, low cost, low power consumption and even zero power consumption passivity are main trends of the future internet of things equipment development. Passive terminal devices (also known as User Equipment (UE)) or backscatter communications (Backscatter Communication, BSC) UEs are limited in their power consumption and hardware capabilities, with communications transmission distances of mostly under 10 meters, far from the goal of cellular hundred meter coverage.

In network deployment, the passive terminal device or the BSC UE may be powered by a network node, which may be a base station, a relay or a legacy terminal (legacy UE), and send control messages, so that the BSC UE may perform backscatter transmission under the direction of the network node. The forward link, i.e. the downlink from the network node to the passive terminal device or BSCUE, becomes a network coverage bottleneck, due to the influence of factors such as the transmit power, the operating frequency band, the passive terminal antenna gain, and the receive sensitivity of the network node in the zero-power communication.

Coverage for providing an enhanced forward link may be achieved by hardware implementations that boost the transmit power or are based on multi-antenna technology, but this would result in increased hardware costs.

Disclosure of Invention

The embodiment of the application provides an information transmission method, an information transmission device, a terminal and network side equipment, which can solve the problem of hardware cost improvement caused by the problem of forward link coverage improvement.

In a first aspect, an information transmission method is provided and applied to a third device, where the method includes:

the method comprises the steps that a third device obtains indication information sent by a first device and a second device, wherein the indication information is used for indicating the third device to perform back scattering transmission;

the third equipment acquires signal transmission parameters of the backscatter transmission according to the indication information;

the third device sends a first signal to the first device and/or sends a second signal to the second device according to the signal transmission parameters;

the first signal and/or the second signal are/is a back scattering signal modulated based on a fourth signal, the fourth signal is a signal sent by the first device to the fourth device, and the third device is a device for modulating information on a carrier wave sent by the fourth signal or other devices to perform back scattering transmission.

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

the receiving module is used for acquiring indication information sent by the first equipment and the second equipment, wherein the indication information is used for indicating the third equipment to carry out back scattering transmission;

the analysis module is used for acquiring signal transmission parameters of the backscatter transmission according to the indication information;

a transmitting module, configured to transmit a first signal to the first device and/or transmit a second signal to the second device according to the signal transmission parameter;

the first signal and/or the second signal are/is a back scattering signal modulated based on a fourth signal, the fourth signal is a signal sent by the first device to the fourth device, and the information transmission device is a device for modulating information on a carrier wave sent by the fourth signal or other devices to perform back scattering transmission.

In a third aspect, an information transmission method is provided, applied to a first device, and the method includes:

the first device sends first indication information to the third device and sends third indication information to the second device; the second device is configured to send second indication information to the third device, where the first indication information and the second indication information are used to indicate indication information of signal transmission parameters of the third device for performing backscatter transmission;

The first device sends a fourth signal to a fourth device;

the first device receives a first signal from the third device and/or a third signal from the second device; the third signal is obtained based on a second signal sent by the third device, the first signal and the second signal are backscatter signals obtained based on the fourth signal after modulation, and the third device is a device for performing backscatter transmission by modulating information on a carrier wave sent by the fourth signal or other devices.

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

the first sending module is used for sending the first indication information to the third equipment and sending the third indication information to the second equipment; the second device is configured to send second indication information, where the first indication information and the second indication information are used to indicate indication information of signal transmission parameters of the third device for performing backscatter transmission;

a second transmitting module, configured to transmit a fourth signal to a fourth device;

a receiving module for receiving a first signal from the third device and/or a third signal from the second device; the third signal is obtained based on a second signal sent by the third device, the first signal and the second signal are backscatter signals obtained based on the fourth signal after modulation, and the third device is a device for performing backscatter transmission by modulating information on a carrier wave sent by the fourth signal or other devices.

In a fifth aspect, there is provided an information transmission method applied to a second device, the method including:

the second device receives third indication information from the first device;

the second device sends second indication information to third device according to the third indication information;

the second indication information is used for indicating signal transmission parameters of back scattering transmission to the third device, and the third device is a device for modulating information on a carrier wave sent by a fourth signal or other devices to perform back scattering transmission.

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

the receiving module is used for receiving third indication information from the first equipment;

the sending module is used for sending second indication information to third equipment according to the third indication information;

In a seventh aspect, there is provided a terminal 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 according to the first, third or fifth aspects.

An eighth aspect provides a terminal, including a processor and a communication interface, where the processor is configured to obtain signal transmission parameters of backscatter transmission according to the indication information, and the communication interface is configured to obtain indication information sent by a first device and a second device, where the indication information is used to instruct the third device to perform backscatter transmission; and sending a first signal to the first equipment and/or sending a second signal to the second equipment according to the signal transmission parameters.

In a ninth aspect, a network side device is provided, 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 according to the third or fifth aspect.

In a tenth aspect, there is provided an information transmission system including: a terminal and a network side device, the terminal being operable to perform the steps of the information transmission method according to the first aspect, the third aspect or the fifth aspect, the network side device being operable to perform the steps of the information transmission method according to the third aspect or the fifth aspect.

In an eleventh 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 third aspect, or performs the steps of the method according to the fifth aspect.

In a twelfth aspect, there is provided a chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being adapted to run a program or instructions, to perform the steps of the method according to the first aspect, or to perform the steps of the method according to the third aspect, or to perform the steps of the method according to the fifth aspect.

In a thirteenth 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 according to the first aspect, or to perform the steps of the method according to the third aspect, or to perform the steps of the method according to the fifth aspect.

In the embodiment of the application, the indication information sent by the first device and the second device is acquired through the third device, and the indication information is used for indicating the third device to perform back scattering transmission; the third equipment acquires signal transmission parameters of the backscatter transmission according to the indication information; the third device sends a first signal to the first device and/or sends a second signal to the second device according to the signal transmission parameters. By enabling the third device to obtain enough diversity gain or power gain, the third device can more reliably receive the indication information sent by the network node, and further better realize backscatter transmission.

Drawings

Fig. 1 is a schematic diagram of a wireless communication system to which embodiments of the present application are applicable;

fig. 2 is a schematic flow chart of an information transmission method according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of an information transmission system according to an embodiment of the present application;

fig. 4 is another flow chart of an information transmission method according to an embodiment of the present application;

fig. 5 is a schematic diagram of another structure of an information transmission system according to an embodiment of the present application;

fig. 6 is a schematic diagram of another structure of an information transmission system according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of an information transmission device according to an embodiment of the present application;

fig. 8 is another flow chart of an information transmission method according to an embodiment of the present application;

fig. 9 is a schematic diagram of another structure of an information transmission device according to an embodiment of the present application;

fig. 10 is a schematic flow chart of another information transmission method according to an embodiment of the present application;

fig. 11 is a schematic diagram of another structure of an information transmission device according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a terminal implementing an embodiment of the present application;

Fig. 14 is a schematic structural diagram 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 embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier FrequencyDivision Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the 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 an embodiment of the present application is 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.. It should be noted 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, 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 transmitting/receiving point (TransmittingReceivingPoint, TRP), or some other suitable terminology in the art, a WLAN access point, a WiFi node, etc., and 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 embodiment 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. The core network device may include, but is not limited to, at least one of: a core network node, a core network function, a mobility management entity (Mobility Management Entity, MME), an access mobility management function (Access and Mobility Management Function, AMF), a session management function (Session Management Function, SMF), a user plane function (User Plane Function, UPF), a policy control function (Policy Control Function, PCF), a policy and charging rules function (Policy and Charging Rules Function, PCRF), an edge application service discovery function (EdgeApplicationServerDiscoveryFunction, EASDF), unified data management (Unified Data Management, UDM), unified data repository (Unified Data Repository, UDR), a home subscriber server (Home Subscriber Server, HSS), a centralized network configuration (Centralized network configuration, CNC), a network storage function (Network Repository Function, NRF), a network opening function (NetworkExposureFunction, NEF), a local NEF (LocalNEF, or L-NEF), a binding support function (Binding Support Function, BSF), an application function (Application Function, AF), and the like. It should be noted that, 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 information transmission method, the device, the terminal and the network side equipment provided by the embodiment of the application are described in detail through some embodiments and application scenes thereof by combining the attached drawings.

As shown in fig. 2 and 3, the embodiment of the present application provides an information transmission method, the execution subject of which is the third device 303, in other words, the method may be executed by software or hardware installed in the third device 303. The method comprises the following steps.

S210, the third device 303 obtains indication information sent by the first device 301 and the second device 302, where the indication information is used to instruct the third device 303 to perform backscatter transmission.

The first device 301 and the second device 302 may send indication information to the third device 303 through cooperative transmission, so that the third device obtains sufficient diversity gain or power gain through cooperative transmission.

The first device 301 may be a network-side device or a terminal device, for example, may be a base station (gNB) or a legacy UE serving as an anchor node without coverage of the gNB.

The second device 302 is a relay device between the first device 301 and the third device 303, and may be a network side main device or a terminal device, for example, may be a network side device with relay capability or a legacy UE with normal capability.

The third device 303 is a device that modulates information on a carrier sent by a fourth signal or other devices for performing backscatter transmission, in an implementation manner, the third device 303 may be a passive terminal device or a BSCUE, and modulates information on a carrier sent by other devices for performing backscatter transmission, where for simplicity, the BSCUE is taken as an example of the third device 303 in the following embodiments.

S220, the third device 303 obtains signal transmission parameters of the backscatter transmission according to the indication information.

The third device 303 parses the content of the indication information received from the first device 301 and the second device 302 to obtain the backscatter transmission signal transmission parameter indicated by the indication information, which is hereinafter referred to as a signal transmission parameter.

The signal transmission parameters may be set according to an actual application scenario or needs, and the signal transmission parameters may include at least one of the following parameters when the third device 303 performs backscatter transmission: time-frequency domain resources, modulation modes, coding modes, precoding modes, period information, symbol lengths, transmission time lengths, delimiter information, preamble information, related information for frequency shifting carrier signals and the like.

In one embodiment, the period information includes at least one transmission period length information and a number of transmission periods required to complete the backscatter transmission.

In one embodiment, the delimiter information may be used to indicate a start time of the backscattered signal, including at least one of:

the length of the delimiter;

time offset between delimiter and indication information.

In one embodiment, the preamble information includes at least one of:

the length of the preamble;

the type of preamble.

In one embodiment, the information related to frequency shifting the carrier signal includes at least one of:

whether or not frequency shifting is supported;

a center frequency point after frequency shifting;

bandwidth.

S230, the third device 303 sends a first signal S1 to the first device 301 and/or sends a second signal S2 to the second device 302 according to the signal transmission parameter;

the first signal S1 and/or the second signal S2 are/is a back-scattered signal modulated based on a fourth signal S4, where the fourth signal S4 is a signal sent by the first device 301 to the fourth device 304.

In one embodiment, the signal transmission parameters include at least one of:

Time-frequency domain resources of the first signal and/or the second signal;

the modulation mode of the first signal and/or the second signal;

the coding mode of the first signal and/or the second signal;

a precoding mode of the first signal and/or the second signal;

period information of the first signal and/or the second signal;

the symbol length of the first signal and/or the second signal;

the transmission duration of the first signal and/or the second signal;

delimiter information of the first signal and/or the second signal;

preamble information of the first signal and/or the second signal;

information about the frequency shift of the carrier signal of the first signal and/or the second signal.

After receiving the fourth signal S4 sent by the first device 301 to the fourth device 304, the third device 303 may modulate the fourth signal S4 according to the acquired signal transmission parameter, and send the first signal S1 to the first device 301 and/or send the second signal S2 to the second device 302 through back scattering transmission according to the signal transmission parameter, where the second device 302 will send the third signal S3 to the first device 301 according to the second signal S2 when receiving the second signal S2.

In one embodiment, the second device 302 may demodulate and decode the second signal S2 sent by the third device 303, and modulate and encode the obtained information to generate a third signal S3, and send the third signal S3 to the first device.

In another embodiment, the second device 302 may directly amplify the second signal S2 sent by the third device 303 to obtain a third signal S3, and send the third signal S3 to the first device.

The first device 301 obtains modulation information of the third device 303 according to the received first signal S1 and/or third signal S3.

As can be seen from the technical solutions of the foregoing embodiments, in the embodiments of the present application, indication information sent by a first device and a second device is obtained by a third device, where the indication information is used to instruct the third device to perform backscatter transmission; the third equipment acquires signal transmission parameters of the backscatter transmission according to the indication information; the third device sends a first signal to the first device and/or sends a second signal to the second device according to the signal transmission parameters. By enabling the third device to obtain enough diversity gain or power gain, the third device can more reliably receive the indication information sent by the network node, and further better realize backscatter transmission.

Based on the above embodiment, further, as shown in fig. 4, step S210 includes:

in step S211, the third device 303 acquires the first instruction information L1 from the first device 301 and acquires the second instruction information L2 from the second device 302.

Wherein the second indication information L2 is generated based on the third indication information L3 sent by the first device 301 to the second device 302, and in one embodiment, the first device 301 instructs the second device 302 to send the second indication information L2 to the third device 303 by sending the third indication information L3 to the second device 302; in another embodiment, the first device 301 sends the third instruction information L3 to the second device 302, and the second device 302 amplifies the third instruction information L3 to obtain the second instruction information L2, and then sends the third device 303.

The manner in which the first device 301 and the second device 302 cooperatively transmit the indication information may be varied, and in one embodiment, the first indication information L1 and the second indication information L2 both carry complete and identical indication information, that is, the indication information is transmitted in a diversity manner. Wherein the complete indication is an indication of all signal transmission parameters required for backscatter transmission with the third device 303.

In one embodiment, the first indication information L1 and the second indication information L2 further include at least one of:

an indication information identifier, i.e. determining the indication information as indication information for scheduling BSCUE;

resource indication information;

source equipment Identification (ID) information;

the identification information of the third device 303, namely BSC UE ID information;

and the integrity mark is used for indicating whether the first indication information or the second indication information carries complete indication information or not.

In another embodiment of the manner of cooperatively transmitting the indication information by the first device 301 and the second device 302, the first indication information L1 and the second indication information L2 respectively carry part of the indication information, and the first indication information L1 and the second indication information L2 form complete indication information, that is, the indication information is cooperatively transmitted by adopting a split manner.

In one embodiment, the first indication information L1 and the second indication information L2 may further include, in addition to the above: a segment indicator, which is used for indicating the position or segment index of the carried indication information in the complete indication information.

The bearing manner of the first indication information L1 and the second indication information L2 may be determined according to the type of the device and the architecture of the system, and in one embodiment, the first indication information L1 and the second indication information L2 are carried by at least one of the following information:

A leader sequence;

downlink control information (Downlink Control Information, DCI);

sidelink control information (Sidelink Control Information, SCI).

In one embodiment, the first indication information and the second indication information may adopt the same bearing manner, and the information bearing manner of the first indication information and the second indication information includes, but is not limited to, at least one of the following:

the first indication information and the second indication information are carried by a preamble sequence with the same format, and the preamble sequence with the same format can be a preamble sequence which is designed uniformly in advance;

the first indication information and the second indication information are carried by DCI;

the first indication information and the second indication information are both carried by the SCI.

In another embodiment, the first indication information and the second indication information may adopt different bearing manners, and the information bearing manners of the first indication information and the second indication information include, but are not limited to, at least one of the following:

the first indication information is carried by DCI, and the second indication information is carried by SCI;

the first indication information is carried by DCI, and the second indication information is carried by a preamble sequence;

The first indication information is carried by a preamble sequence and the second indication information is carried by a SCI.

In one embodiment, the third indication information L3 for indicating the second indication information L2 may be carried by at least one of the following information:

downlink control information (Downlink Control Information, DCI);

a medium access control unit (Medium Access Control ControlElement, MAC-CE).

The implementation manner of step S220 may be varied, in an implementation manner, before implementing step S220, the third device 303 may determine whether the indication information is scheduling indication information for indicating the transmission of the third device 303 according to the received indication information identifier and/or BSCUEID in the first indication information L1 and/or the second indication information L2, etc., if yes, then step S220 is implemented, otherwise, the indication information is ignored or other processing is performed, so as to reduce the detection complexity of the third device 303.

In one embodiment, before performing step S220, the third device 303 may further determine a manner in which the first device 301 and the second device 302 cooperatively transmit the indication information, and specifically may determine whether the first indication information L1 and/or the second indication information L2 carries complete indication information.

In an embodiment, the third device 303 may determine whether the first indication information L1 and/or the second indication information L2 carries complete indication information according to the integrity identifiers in the first indication information L1 and the second indication information L2.

In one embodiment, the step S220 includes:

s221, under the condition that complete indication information carried by first indication information L1 and/or second indication information L2 is determined, determining complete indication information according to the first indication information L1 and the second indication information L2, namely carrying out diversity processing on the first indication information L1 and the second indication information L2, and acquiring signal transmission parameters of back scattering transmission according to the complete indication information;

wherein the complete indication information is determined by one of the following ways:

combining the first indication information L1 and the second indication information L2;

better quality indication information in the first indication information L1 and the second indication information L2.

In another embodiment, the step S220 includes:

s222, in the case that it is determined that the first indication information L1 and the second indication information L2 respectively carry part of the indication information, the third device 303 performs joint analysis on the first indication information L1 and the second indication information L2, so as to obtain signal transmission parameters of complete backscatter transmission.

It should be understood that the embodiment of the joint analysis may be various, for example, the first indication information L1 and the second indication information L2 may be combined first, and then the combined indication information may be analyzed; the first instruction information L1 and the second instruction information L2 may be analyzed, and the analysis results may be combined.

In one embodiment, the third device performs joint parsing on the first indication information and the second indication information, including:

and the third equipment performs joint analysis on the first indication information and the second indication information according to the segmentation indicator in the first indication information and the second indication information.

As can be seen from the technical solutions of the foregoing embodiments, in the embodiments of the present application, first indication information is obtained from a first device and second indication information is obtained from a second device through a third device; and analyzing the first indication information and the second indication information according to the cooperative transmission mode of the first device and the second device to obtain signal transmission parameters for performing backscatter transmission, so that the third device obtains enough diversity gain or power gain, and the third device can more reliably receive the indication information sent by the network node, thereby better realizing backscatter transmission.

Based on the above embodiment, further, the above technical solution may be applied in various application scenarios and different bearing modes are adopted, and the embodiment of the present application provides several specific embodiments thereof for illustration.

In one embodiment, a network architecture with legacy UEs as BSCUE relay transmissions is shown in fig. 5. In fig. 5, the first device is a gNB 501, the second device and the fourth device are Legacy UEs with supporting a complete 3GPP protocol stack, and have carrier generators, power amplifiers, etc., labeled as second UE 502 and third UE 504, and the third device is labeled BSCUE 503. The BSCUE 503 may use the fourth signal S4 sent by the gNB to the third UE 504 for backscatter transmission. The BSC UE 503 may directly backscatter transmit to the gNB 501 with the first signal S1; the second signal S2 may be first back-scattered and transmitted to the second UE 502, and the third signal S3 may be generated by using the second UE 502 as a relay and sent to the gNB 501.

Under the framework, the technical scheme of the embodiment of the application is as follows:

the gNB 501 and the second UE 502 respectively send the first indication information L1 and the second indication information L2 to the BSC UE 503 through a cooperative transmission mode.

In one embodiment, the first indication information L1 and the second indication information L2 carry the same and complete indication information.

The gNB 501 sends third indication information L3 to the second UE 502, which instructs the second UE 502 to send second indication information L2 to the BSC UE 503.

The first indication information L1 and the second indication information L2 carry the same indication information.

The first indication information L1 and the second indication information L2 at least carry indication information of complete signal transmission parameters of the BSC UE 503 for transmitting the first signal S1 and/or the second signal S2;

the first indication information L1 and the second indication information L2 may further carry an indication information identifier, resource indication information, source equipment ID information, BSC UE ID information, an integrity identifier, etc.; wherein for integrity identification, in one embodiment, for diversity transmission indication information mode, bit "1" is used to indicate that the indication information is complete.

In another embodiment, the first indication information L1 and the second indication information L2 carry indication information that constitutes part of the complete indication information.

The gNB 501 sends third indication information to the second UE 502, which indicates the second UE 502 to send the second indication information to the BSC UE 503.

The first indication information L1 and the second indication information L2 carry different indication information.

The first indication information L1 and the second indication information L2 at least carry indication information of partial signal transmission parameters of the BSC UE 503 for transmitting the first signal S1 and/or the second signal S2, and after being combined, the indication information can completely indicate the signal transmission parameters of the BSC UE 503;

the first indication information L1 and the second indication information L2 may further carry an indication information identifier, resource indication information, source equipment ID information, BSC UE ID information, an integrity identifier, a segment indicator, etc.; for the integrity identifier, in one embodiment, the split transmission indication information mode indicates that the indication information is incomplete by using a bit of "0", and the indication information is parsed in combination with the segment indicator.

The first indication information L1 and the second indication information L2 may be carried in different ways:

for example: the first indication information L1 is carried by DCI, and the second indication information L2 is carried by SCI;

the third indication information L3 indicating the second indication information L2 may also be carried through DCI.

The bsc UE 503 parses the content in the first indication information L1 and/or the second indication information L2, specifically including:

According to the received indication information identifier in the first indication information L1 and/or the second indication information L2, it is determined that the indication information is scheduling indication information for indicating the BSC UE 503 to transmit, so as to reduce the detection complexity of the BSC UE 503.

Whether to perform joint processing or diversity processing on the first indication information L1 and the second indication information L2 is determined according to the integrity identifier of the received indication information in the first indication information L1 and/or the second indication information L2.

If the integrity identifiers in the first indication information L1 and the second indication information L2 are not complete, for example, the indication bit is "0", the received indication information may be jointly processed according to the segment indicator.

The bsc UE 503 sends a first signal S1 to the gNB 501 with a signal transmission parameter and/or sends a second signal S2 to the second UE 502 with a signal transmission parameter according to the signal transmission parameter indicated in the indication information obtained in the first indication information L1 and/or the second indication information L2.

Wherein, the first signal S1 and the second signal S2 are both backscatter signals modulated based on the fourth signal S4.

The second UE 502 generates a third signal S3 based on the second signal S2 and sends it to the gNB 501.

The second UE 502 demodulates and decodes the second signal sent by the BSC UE503, modulates and encodes the obtained signal to generate a third signal S3, and sends the third signal S3 to the gNB 501;

alternatively, the second UE 502 performs only amplification processing on the second signal S2 sent by the BSC UE503 to obtain a third signal S3, and sends the third signal S3 to the gNB.

In the first embodiment of the present application, the indication information is based on DCI in the existing Uu interface or SCI in the PC5 interface, and may be DCI and SCI in a new format (format) that is redesigned, and the DCI and SCI in the existing protocol need to be extended, but still based on the current NR air interface protocol in general.

In another embodiment, a network architecture as shown in fig. 5 is adopted, but in order to further reduce the complexity of detecting the indication information by the BSC UE503, a uniformly-designed bearer mode, that is, a preamble sequence bearer mode based on a wifi-like physical frame header, is adopted. The specific scheme is as follows:

the network architecture of the embodiment of the present application is substantially the same as that of the foregoing embodiment, and will not be described herein. The difference is that, in order to further reduce the complexity of detecting the indication information by the BSC UE503, a unified bearing manner with a brand new design, that is, a preamble sequence bearing manner based on a frame header similar to wifi physical frames is adopted. The technical scheme of the embodiment of the application is as follows:

B1. The gnb 501 and the second UE 502 send the first indication information L1 and the second indication information L2 to the BSC UE 503 by means of cooperative transmission, respectively.

Step b1 is substantially the same as step A1 described above, and the repetition is not repeated here.

Unlike the above step A1, the first indication information L1 and the second indication information L2 are carried in the same manner:

for example, the first indication information L1 and the second indication information L2 are both carried by a newly designed preamble sequence;

the third indication information L3 indicating the second indication information L2 may be carried through DCI.

Wherein the leader sequence is exemplified as follows:

the synchronization sequence is used for synchronization between the BSC UE 503 and the gNB 501 or the second UE 502; the indication information identifier is used to indicate that the preamble sequence is an indicator for the BSC UE 503 scheduling; an integrity identifier is used to indicate whether the indication information carried by the preamble sequence is complete; the segment indicator is used for indicating what segment of indication information the preamble carries, for example, the signal transmission parameter indication can be segmented and indicated by adopting a bit map (bitmap) manner, for example, if the segment indicator is "1010", it can be stated that the indication information carried by the preamble is the 1 st segment and the 3 rd segment of indication information in the complete indication information; the signal transmission parameter indicator is used to indicate the signal transmission parameter of the BSC UE 503 for backscatter transmission, and may be segmented according to the requirement; reserved bits are used to indicate other functional extensions; the padding bits are used to ensure that the length of the entire preamble sequence is a fixed length.

B2.bsc UE 503 parses the content in the first indication information L1 and/or the second indication information L2.

Step B2 is substantially the same as step A2 described above, and the repetition is not described here again.

B3.bsc UE 503 sends a first signal S1 to the gNB 501 with a signal transmission parameter and/or sends a second signal to the second UE 502 with a signal transmission parameter according to the signal transmission parameter indicated in the indication information obtained in the first indication information L1 and/or the second indication information L2.

Step B3 is substantially the same as step A3 described above, and the repetition is not repeated here.

The embodiment of the application adopts the unified bearing mode based on the preamble sequence to bear the indication information of the BSC UE 503, which not only can reduce the complexity of the BSC UE 503 for detecting the indication information, namely the BSC UE 503 does not need to detect the indication information of different bearing modes, but only needs to detect the preamble sequence with unified format; on the other hand, the synchronization sequence in the newly designed preamble sequence reduces the requirement of the BSC UE 503 for synchronization, and asynchronous reception can be achieved.

In another embodiment, as shown in fig. 6, a sidelink (sidelink) network architecture is a sidelink network architecture in which resource allocation is performed autonomously by the UE anchor node without the gNB coverage, and the Legacy UE relays transmissions as a BSC UE. In fig. 6, the first device is a first UE 601, which is a Legacy UE supporting a complete 3GPP protocol stack, and may be used as an anchor node for other UEs in a sidelink, i.e. the UE anchor node may autonomously allocate resources to other UEs; the second device and the third device are both Legacy UEs with supporting the full 3GPP protocol stack, labeled second UE 602 and third UE 604, and the third device is labeled BSCUE 603. The BSC UE 603 performs backscatter transmission by using a sidelink signal, i.e., a fourth signal S4, sent by the first UE 601 to the third UE 604, and the BSC UE 603 may directly perform backscatter transmission by using the first signal S1 to the first UE 601; the second signal S2 may be first back-scattered and transmitted to the second UE 602, and the third signal S3 may be generated by using the second UE 602 as a relay and transmitted to the first UE 601.

Under the network architecture, the technical solution of the embodiment of the present application is different from the technical solution in fig. 5 in that the first indication information L1, the second indication information L2 and the third indication information L3 are all carried through SCI, but not through DCI, and are the same elsewhere, which is not repeated here.

In the embodiment of the application, a sidelink network deployment architecture which is completely free of base station participation is adopted, the sidelink network deployment architecture is suitable for a home scene or a personal body area network, and the first indication information L1 and the second indication information L2 are borne based on SCI in the sidelink. The SCI may be a redesigned two-step SCI (two-stage SCI) of a new format, requiring an extension of the second-step SCI type in the existing protocol; or the first indication information L1 and the second indication information L2 are redesigned one-step SCI, i.e., one-stage SCI, which is not particularly limited herein.

In another embodiment, a network architecture as shown in fig. 6 is employed and is substantially similar to that of the previous embodiment. The difference is that the first indication information L1 and the second indication information L2 are redesigned bearer based on the preamble sequence, not through SCI. Specific design methods are not described here.

In the embodiment of the application, a sidelink network deployment architecture which is completely free of base station participation is adopted, and the sidelink network deployment architecture is suitable for home scenes or personal body area networks. The first indication information L1 and the second indication information L2 are indication information of the BSC UE 603 carried by adopting a unified preamble sequence-based carrying mode with brand new design, so that the complexity of detecting the indication information by the BSC UE 603 can be reduced, that is, the BSC UE 603 does not need to detect the indication information of different carrying modes, but only needs to detect the preamble sequence with a unified format; on the other hand, the synchronization sequence in the newly designed preamble sequence reduces the requirement of the BSC UE 603 for synchronization, and asynchronous reception can be achieved.

As can be seen from the technical solutions of the foregoing embodiments, in the embodiments of the present application, different bearer manners are adopted in different network architectures, so that first indication information and second indication information are received from first equipment and second equipment, and the first indication information and the second indication information are parsed according to the cooperative transmission manners of the first equipment and the second equipment to obtain signal transmission parameters for performing backscatter transmission, so that a third equipment obtains sufficient diversity gain or power gain, so that the third equipment can more reliably receive the indication information sent by a network node, and further better implement backscatter transmission.

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 information transmission method performed by an information transmission device as an example.

As shown in fig. 7, the information transmission apparatus includes: a receiving module 701, a parsing module 702 and a transmitting module 703.

The receiving module 701 is configured to obtain indication information sent by the first device and the second device, where the indication information is used to instruct the information transmission device to perform backscatter transmission; the parsing module 702 is configured to obtain signal transmission parameters of backscatter transmission according to the indication information; the sending module 703 is configured to send a first signal to the first device and/or send a second signal to the second device according to the signal transmission parameter; the first signal and/or the second signal are/is a back scattering signal modulated based on a fourth signal, the fourth signal is a signal sent by the first device to the fourth device, and the information transmission device is a device for modulating information on a carrier wave sent by the fourth signal or other devices to perform back scattering transmission.

Further, the signal transmission parameters include at least one of:

time-frequency domain resources of the first signal and/or the second signal;

the modulation mode of the first signal and/or the second signal;

the coding mode of the first signal and/or the second signal;

a precoding mode of the first signal and/or the second signal;

period information of the first signal and/or the second signal;

the symbol length of the first signal and/or the second signal;

the transmission duration of the first signal and/or the second signal;

delimiter information of the first signal and/or the second signal;

preamble information of the first signal and/or the second signal;

Further, the period information includes at least one transmission period length information and a number of transmission periods required to complete the backscatter transmission.

Further, the delimiter information includes at least one of:

the length of the delimiter;

time offset between delimiter and indication information.

Further, the preamble information includes at least one of:

the length of the preamble;

The type of preamble.

Further, the related information for frequency shifting the carrier signal includes at least one of:

whether or not frequency shifting is supported;

a center frequency point after frequency shifting;

bandwidth.

Further, the first device and the second device are at least one of:

network side equipment;

and a terminal device.

Further, the information transmission device is a passive terminal device or a backscatter communication terminal.

As can be seen from the technical solutions of the foregoing embodiments, in the embodiments of the present application, indication information sent by a first device and a second device is obtained, where the indication information is used to instruct the information transmission device to perform backscatter transmission; the information transmission device acquires signal transmission parameters of backscatter transmission according to the indication information; the information transmission device transmits a first signal to the first equipment and/or transmits a second signal to the second equipment according to the signal transmission parameters. By enabling the information transmission device to acquire enough diversity gain or power gain, the information transmission device can more reliably receive the indication information sent by the network node, and further better realize backscatter transmission.

Based on the above embodiment, further, the receiving module 701 is configured to obtain the first indication information from the first device and obtain the second indication information from the second device.

Further, the first indication information and the second indication information both carry complete and same indication information.

Further, the first indication information and the second indication information respectively carry part of indication information, and the first indication information and the second indication information form complete indication information.

Further, the receiving module 701 is further configured to obtain at least one of the following corresponding to the first indication information and the second indication information:

an indication information identifier;

resource indication information;

source device identification information;

identification information of the information transmission device;

Further, the receiving module 701 is further configured to obtain segment indicators corresponding to the first indication information and the second indication information, and is configured to indicate positions or segment indexes of the first indication information and the second indication information in the complete indication information.

Further, the analyzing module is configured to, when determining that the first indication information and the second indication information respectively carry part of the indication information, perform joint analysis on the first indication information and the second indication information, and obtain a signal transmission parameter of complete backscatter transmission.

Further, the parsing module is configured to perform joint parsing on the first indication information and the second indication information according to the segment indicator in the first indication information and the second indication information.

Further, the analysis module is configured to determine, when determining complete indication information carried by the first indication information and/or the second indication information, the complete indication information according to the first indication information and the second indication information, and obtain signal transmission parameters of backscatter transmission according to the complete indication information;

combining the first indication information and the second indication information, for example, a diversity technology can be adopted to combine the received first indication information and the received second indication information so as to obtain complete indication information;

and better-quality indication information in the first indication information and the second indication information.

Further, the parsing module is further configured to determine, according to the integrity identifiers in the first indication information and the second indication information, whether the first indication information and/or the second indication information carries the complete indication information.

Further, the first indication information and the second indication information are carried by at least one of the following information:

a leader sequence;

DCI；

SCI。

further, the information carrying manner of the first indication information and the second indication information includes, but is not limited to, at least one of the following:

the first indication information and the second indication information are carried by a preamble sequence with the same format;

the first indication information and the second indication information are carried by SCI;

As can be seen from the technical solutions of the foregoing embodiments, in the embodiments of the present application, first indication information is obtained from a first device, and second indication information is obtained from a second device; and analyzing the first indication information and the second indication information according to the cooperative transmission mode of the first equipment and the second equipment to obtain signal transmission parameters for performing backscatter transmission, so that the information transmission device obtains enough diversity gain or power gain, the information transmission device can more reliably receive the indication information sent by the network node, and further, backscatter transmission can be better realized.

The information transmission device in the embodiment of the application can be an electronic device, for example, an electronic device with an operating system, or can 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 application are not specifically limited.

The information transmission device provided by the embodiment of the present application can implement each process implemented by the embodiments of the methods of fig. 2 to 6, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

As shown in fig. 8, an embodiment of the present application provides an information transmission method, in which an execution subject of the method is a first device, in other words, the method may be executed by software or hardware installed in the first device. The method comprises the following steps.

S810, the first device sends first indication information to the third device and sends third indication information to the second device; the second device is configured to send second indication information to the second device, where the first indication information and the second indication information are used to indicate indication information of signal transmission parameters of the third device for performing backscatter transmission;

S820, the first device sends a fourth signal to a fourth device;

s830, the first device receiving a first signal from the third device and/or receiving a third signal from the second device; the third signal is obtained based on a second signal sent by the third device, the first signal and the second signal are backscatter signals obtained based on the fourth signal after modulation, and the third device is a device for performing backscatter transmission by modulating information on a carrier wave sent by the fourth signal or other devices.

Further, the signal transmission parameters include at least one of:

time-frequency domain resources of the first signal and/or the second signal;

the modulation mode of the first signal and/or the second signal;

the coding mode of the first signal and/or the second signal;

a precoding mode of the first signal and/or the second signal;

period information of the first signal and/or the second signal;

the symbol length of the first signal and/or the second signal;

the transmission duration of the first signal and/or the second signal;

delimiter information of the first signal and/or the second signal;

preamble information of the first signal and/or the second signal;

Information about the frequency shift of the carrier signal by the first signal and/or the second signal.

Further, the cycle length information includes at least one transmission cycle length information and a number of transmission cycles required to complete the backscatter transmission.

Further, the start time signal comprises at least one of:

the length of the delimiter;

time offset between delimiter and indication information.

Further, the preamble information includes at least one of:

the length of the preamble;

the type of preamble.

Further, the related information for frequency shifting the carrier signal includes:

whether or not frequency shifting is supported;

a center frequency point after frequency shifting;

bandwidth.

Further, the first device and the second device are at least one of:

network side equipment;

and a terminal device.

Steps 810-820 may implement the method embodiments shown in fig. 2 and 3, and obtain the same technical effects, and the repetition of which is not repeated here.

As can be seen from the technical solutions of the foregoing embodiments, in the embodiments of the present application, a first device sends first indication information to a third device, and sends third indication information to a second device; the first device sends a fourth signal to a fourth device; the first device receives a first signal from the third device and/or a third signal from the second device; the third device obtains enough diversity gain or power gain, so that the third device can reliably receive the indication information sent by the network node, and the backscattering transmission can be better realized.

Based on the above embodiment, further, the first indication information and the second indication information both carry complete and identical indication information.

Further, step S810 further includes:

the first device also transmits, to the third device and/or the second device, at least one of the following corresponding to the first indication information and second indication information:

an indication information identifier;

resource indication information;

source device identification information;

identification information of the third device;

Further, step S810 further includes:

the first device further sends a segment indicator corresponding to the first indication information and the second indication information to the third device and/or the second device, and the segment indicator is used for indicating the position or the segment index of the first indication information and the second indication information in the complete indication information.

Further, the first indication information is carried by at least one of:

a leader sequence;

DCI；

SCI。

further, the third indication information is carried by at least one of:

DCI；

MAC-CE。

according to the technical scheme of the embodiment, the first device and the second device send the first indication information and the second indication information to the third device in different cooperative transmission modes, so that the third device obtains enough diversity gain or power gain, the third device can reliably receive the indication information sent by the network node, and further the back scattering transmission can be better realized.

As shown in fig. 9, the information transmission apparatus includes: a first transmitting module 901, a second transmitting module 902 and a receiving module 903.

The first sending module 901 is configured to send first indication information to a third device, and send third indication information to a second device; the second device is configured to send second indication information to the second device, where the first indication information and the second indication information are used to indicate indication information of signal transmission parameters of the third device for performing backscatter transmission; the second transmitting module 902 is configured to transmit a fourth signal to a fourth device; the receiving module 903 is configured to receive a first signal from the third device and/or receive a third signal from the second device; the third signal is obtained based on a second signal sent by the third device, the first signal and the second signal are backscatter signals obtained based on the fourth signal after modulation, and the third device is a device for performing backscatter transmission by modulating information on a carrier wave sent by the fourth signal or other devices.

Further, the signal transmission parameters include at least one of:

time-frequency domain resources of the first signal and/or the second signal;

the modulation mode of the first signal and/or the second signal;

the coding mode of the first signal and/or the second signal;

a precoding mode of the first signal and/or the second signal;

period information of the first signal and/or the second signal;

the symbol length of the first signal and/or the second signal;

the transmission duration of the first signal and/or the second signal;

delimiter information of the first signal and/or the second signal;

preamble information of the first signal and/or the second signal;

Further, the start time signal comprises at least one of:

the length of the delimiter;

time offset between delimiter and indication information.

Further, the preamble information includes at least one of:

the length of the preamble;

The type of preamble.

whether or not frequency shifting is supported;

a center frequency point after frequency shifting;

bandwidth.

Further, the information transmission device and the second equipment are at least one of the following:

network side equipment;

and a terminal device.

As can be seen from the technical solutions of the foregoing embodiments, in the embodiments of the present application, first indication information is sent to third equipment, and third indication information is sent to second equipment; transmitting a fourth signal to a fourth device; receiving a first signal from the third device and/or a third signal from the second device; the third device obtains enough diversity gain or power gain, so that the third device can reliably receive the indication information sent by the network node, and the backscattering transmission can be better realized.

Further, the first sending module 901 is further configured to send at least one of the following corresponding to the first indication information and the second indication information to the third device and/or the second device:

an indication information identifier;

resource indication information;

source device identification information;

identification information of the third device;

Further, the first sending module 901 is further configured to send a segment indicator corresponding to the first indication information and the second indication information to the third device and/or the second device, where the segment indicator is used to indicate a position or a segment index of the first indication information and the second indication information in the complete indication information.

Further, the first indication information is carried by at least one of:

a leader sequence;

DCI；

SCI。

further, the third indication information is carried by at least one of:

DCI；

MAC-CE。

as can be seen from the technical solutions of the foregoing embodiments, in the embodiments of the present application, the information transmission apparatus and the second device send the first indication information and the second indication information to the third device by adopting different cooperative transmission manners, so that the third device obtains sufficient diversity gain or power gain, so that the third device can more reliably receive the indication information sent by the network node, and further better implement backscatter transmission.

The information transmission device provided by the embodiment of the present application can implement each process implemented by the method embodiment of fig. 8, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

As shown in fig. 10, an embodiment of the present application provides an information transmission method, the execution subject of which is a second device, in other words, the method may be executed by software or hardware installed in the second device. The method comprises the following steps.

S1010, the second device receives third indication information from the first device;

s1020, the second device sends second indication information to third device according to the third indication information;

Further, the signal transmission parameters include at least one of:

time-frequency domain resources of the second signal;

the modulation mode of the second signal;

the coding mode of the second signal;

a precoding mode of the second signal;

period information of the second signal;

the symbol length of the second signal;

a transmission time period of the second signal;

delimiter information of the transmission duration of the second signal;

preamble information of the second signal;

the second signal is related to frequency shifting the carrier signal.

Further, the delimiter information includes at least one of:

the length of the delimiter;

time offset between delimiter and indication information.

Further, the preamble information includes at least one of:

The length of the preamble;

the type of preamble.

whether or not frequency shifting is supported;

a center frequency point after frequency shifting;

bandwidth.

Further, the third signal is a signal obtained by amplifying the second signal, or the third signal is a signal obtained by demodulating, decoding, recoding and modulating the second signal.

Further, the first device and the second device are at least one of:

network side equipment;

and a terminal device.

As can be seen from the technical solutions of the foregoing embodiments, in the embodiments of the present application, the second device receives the third indication information from the first device; the second device sends second indication information to third device according to the third indication information; therefore, the third device can acquire enough diversity gain or power gain through the assistance of the second device, so that the third device can more reliably receive the indication information sent by the network node, and further, the backscattering transmission can be better realized.

Based on the above embodiment, further, after the second device sends second indication information to a third device according to the third indication information, the method further includes:

The second device receiving a second signal from the third device;

the second device sends a third signal to the first device according to the second signal;

wherein the second signal is a backscatter signal of the third device.

Further, the second indication information is the indication information generated according to the third indication information;

or the second indication information is the indication information after the third indication information is amplified.

Further, step 1020 further comprises:

the second device further sends at least one of the following items corresponding to the second indication information to the third device according to the third indication information:

an indication information identifier;

resource indication information;

source device identification information;

identification information of the third device;

Further, step 1020 further comprises:

the second device also sends a segment indicator corresponding to the second indication information to the third device, for indicating the position or segment index of the second indication information in the complete indication information.

Further, the second indication information is carried by at least one of:

a leader sequence;

DCI；

SCI。

according to the technical scheme of the embodiment, the information transmission device can obtain enough diversity gain or power gain so that the information transmission device can reliably receive the indication information sent by the network node, and further the backscattering transmission can be better realized.

As shown in fig. 11, the information transmission apparatus includes: a receiving module 1101 and a transmitting module 1102.

The receiving module 1101 is configured to receive third indication information from the first device; the sending module 1102 is configured to send second indication information to a third device according to the third indication information; the second indication information is used for indicating signal transmission parameters of back scattering transmission to the third device, and the third device is a device for modulating information on a carrier wave sent by a fourth signal or other devices to perform back scattering transmission.

Further, the signal transmission parameters include at least one of:

time-frequency domain resources of the second signal;

the modulation mode of the second signal;

the coding mode of the second signal;

a precoding mode of the second signal;

period information of the second signal;

the symbol length of the second signal;

a transmission time period of the second signal;

delimiter information of the transmission duration of the second signal;

preamble information of the second signal;

the second signal is related to frequency shifting the carrier signal.

Further, the delimiter information includes at least one of:

the length of the delimiter;

time offset between delimiter and indication information.

Further, the preamble information includes at least one of:

the length of the preamble;

the type of preamble.

whether or not frequency shifting is supported;

a center frequency point after frequency shifting;

bandwidth.

Further, the first device and the information transmission apparatus are at least one of the following:

network side equipment;

and a terminal device.

As can be seen from the technical solutions of the foregoing embodiments, in the embodiments of the present application, third indication information is received from a first device; sending second indication information to third equipment according to the third indication information; therefore, the third device obtains enough diversity gain or power gain, so that the third device can more reliably receive the indication information sent by the network node, and further better realize the back scattering transmission.

Based on the above embodiment, further, the receiving module is further configured to receive a second signal from the third device;

the sending module is further configured to send a third signal to the first device according to the second signal;

wherein the second signal is a backscatter signal of the third device.

Further, the sending module 1102 is further configured to send, to the third device, at least one of the following corresponding to the second indication information according to the third indication information:

An indication information identifier;

resource indication information;

source device identification information;

identification information of the third device;

Further, the sending module 1102 is further configured to send a segment indicator corresponding to the second indication information to the third device, where the segment indicator is used to indicate a position or a segment index of the second indication information in the complete indication information.

Further, the second indication information is carried by at least one of:

a leader sequence;

DCI；

SCI。

The information transmission device provided by the embodiment of the present application can implement each process implemented by the method embodiment of fig. 10, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

Optionally, as shown in fig. 12, the embodiment of the present application further provides a communication device 1200, including a processor 1201 and a memory 1202, where the memory 1202 stores a program or instructions that can be executed on the processor 1201, for example, when the communication device 1200 is a terminal, the program or instructions implement the steps of the above-mentioned embodiment of the information transmission method when executed by the processor 1201, and achieve the same technical effects. When the communication device 1200 is a network side device, the program or the instruction, when executed by the processor 1201, implements the steps of the above-described embodiment of the information transmission method, 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, which comprises a processor and a communication interface, wherein the processor is used for acquiring signal transmission parameters of the backscatter transmission according to the indication information, the communication interface is used for acquiring the indication information sent by the first equipment and the second equipment, and the indication information is used for indicating the terminal to perform the backscatter transmission; and sending a first signal to the first equipment and/or sending a second signal to the second equipment according to the signal transmission parameters. The terminal embodiment corresponds to the terminal-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. 13 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 1300 includes, but is not limited to: at least some of the components of the radio frequency unit 1301, the network module 1302, the input unit 1304, the display unit 1306, the user input unit 1307, the interface unit 1308, the memory 1309, and the processor 1310, etc.

Those skilled in the art will appreciate that the terminal 1300 may further include a power source (e.g., a battery) for supplying power to the various components, and the power source may be logically connected to the processor 1310 through a power management system, so as to perform functions of managing charging, discharging, and power consumption management through the power management system. The terminal structure shown in fig. 13 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 1304 may include a graphics processing unit (Graphics Processing Unit, GPU) 13041 and a microphone 13042, with the graphics processor 13041 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 1306 may include a display panel 13061, and the display panel 13061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1307 includes at least one of a touch panel 13071 and other input devices 13072. The touch panel 13071 is also referred to as a touch screen. The touch panel 13071 can include two parts, a touch detection device and a touch controller. Other input devices 13072 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 the embodiment of the present application, after receiving downlink data from a network side device, the radio frequency unit 1301 may transmit the downlink data to the processor 1310 for processing; in addition, the radio frequency unit 1301 may send uplink data to the network side device. Typically, the radio unit 1301 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

Memory 1309 may be used to store software programs or instructions and various data. The memory 1309 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 1309 may include volatile memory or nonvolatile memory, or the memory 1309 may include both volatile and nonvolatile memory. The non-volatile memory may be a Read-only memory (ROM), a programmable Read-only memory (ProgrammableROM, PROM), an erasable programmable Read-only memory (ErasablePROM, EPROM), an electrically erasable programmable Read-only memory (ElectricallyEPROM, EEPROM), or a flash memory, among others. 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 1309 in embodiments of the application include, but are not limited to, these and any other suitable types of memory.

The processor 1310 may include one or more processing units; optionally, processor 1310 integrates an application processor that primarily handles operations related to the operating system, user interface, and applications, and a modem processor that primarily handles 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 1310.

The radio frequency unit 1301 is configured to obtain indication information sent by the first device and the second device, where the indication information is used to instruct the information transmission apparatus to perform backscatter transmission.

And a processor 1310, configured to obtain signal transmission parameters of the backscatter transmission according to the indication information.

The radio frequency unit 1301 is further configured to send a first signal to the first device and/or send a second signal to the second device according to the signal transmission parameter; the first signal and/or the second signal are/is a back scattering signal modulated based on a fourth signal, the fourth signal is a signal sent by the first device to the fourth device, and the information transmission device is a device for modulating information on a carrier wave sent by the fourth signal or other devices to perform back scattering transmission.

Further, the signal transmission parameters include at least one of:

time-frequency domain resources of the first signal and/or the second signal;

the modulation mode of the first signal and/or the second signal;

the coding mode of the first signal and/or the second signal;

a precoding mode of the first signal and/or the second signal;

period information of the first signal and/or the second signal;

the symbol length of the first signal and/or the second signal;

the transmission duration of the first signal and/or the second signal;

delimiter information of the first signal and/or the second signal;

preamble information of the first signal and/or the second signal;

Further, the delimiter information includes at least one of:

the length of the delimiter;

time offset between delimiter and indication information.

Further, the preamble information includes at least one of:

the length of the preamble;

The type of preamble.

whether or not frequency shifting is supported;

a center frequency point after frequency shifting;

bandwidth.

Further, the first device and the second device are at least one of:

network side equipment;

and a terminal device.

Further, the terminal is a passive terminal device or a backscatter communication terminal.

The embodiment of the application can more reliably receive the indication information sent by the network node by enabling the terminal to acquire enough diversity gain or power gain, thereby better realizing the back scattering transmission.

Based on the above embodiment, further, the processor 1310 is configured to obtain the first indication information from the first device and obtain the second indication information from the second device.

Further, the radio frequency unit 1301 is further configured to obtain at least one of the following corresponding to the first indication information and the second indication information:

An indication information identifier;

resource indication information;

source device identification information;

identification information of the third device;

Further, the radio frequency unit 1301 is further configured to obtain a segment indicator corresponding to the first indication information and the second indication information, and is configured to indicate a position or a segment index of the first indication information and the second indication information in the complete indication information.

Further, the processor 1310 is configured to, when determining that the first indication information and the second indication information respectively carry part of the indication information, perform joint analysis on the first indication information and the second indication information, and obtain a signal transmission parameter of the complete backscatter transmission.

Further, the processor 1310 is configured to perform joint parsing on the first indication information and the second indication information according to the segment indicator in the first indication information and the second indication information.

Further, the processor 1310 is configured to determine, when determining complete indication information carried by the first indication information and/or the second indication information, the complete indication information according to the first indication information and the second indication information, and obtain signal transmission parameters of backscatter transmission according to the complete indication information;

combining the first indication information and the second indication information;

Further, the processor 1310 is further configured to determine, according to the integrity identifier in the first indication information and the second indication information, whether the first indication information and/or the second indication information carries the complete indication information.

a leader sequence;

DCI；

SCI。

The embodiment of the application ensures that the terminal obtains enough diversity gain or power gain, can more reliably receive the indication information sent by the network node, and further better realizes the back scattering transmission.

Specifically, the embodiment of the application also provides network side equipment. As shown in fig. 14, the network side device 1400 includes: an antenna 141, a radio frequency device 142, a baseband device 143, a processor 144, and a memory 145. The antenna 141 is connected to the radio frequency device 142. In the uplink direction, the radio frequency device 142 receives information via the antenna 141, and transmits the received information to the baseband device 143 for processing. In the downlink direction, the baseband device 143 processes information to be transmitted, and transmits the processed information to the radio frequency device 142, and the radio frequency device 142 processes the received information and transmits the processed information through the antenna 141.

The method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 143, where the baseband apparatus 143 includes a baseband processor.

The baseband device 143 may, for example, include at least one baseband board, where a plurality of chips are disposed, as shown in fig. 14, where one chip, for example, a baseband processor, is connected to the memory 145 through a bus interface, so as to call a program in the memory 145 to perform the network device operation shown in the above method embodiment.

The network-side device may also include a network interface 146, such as a common public radio interface (common public radio interface, CPRI).

Specifically, the network side device 1400 of the embodiment of the present application further includes: instructions or programs stored in the memory 145 and executable on the processor 144, the processor 144 invokes the instructions or programs in the memory 145 to perform the methods performed by the modules shown in fig. 9 and achieve the same technical effects, and are not described herein in detail for the sake of avoiding repetition.

The embodiment of the application also provides a readable storage medium, on which a program or an instruction is stored, which when executed by a processor, implements each process of the above-mentioned information transmission method embodiment, and can achieve the same technical effects, and in order to avoid repetition, the description is omitted here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, which comprises a processor and a communication interface, wherein the communication interface is coupled with the processor, and the processor is used for running programs or instructions to realize the processes of the embodiment of the information transmission method, and can achieve the same technical effects, so that repetition is avoided, and the description is omitted here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product stored in a storage medium, where the computer program/program product is executed by at least one processor to implement each process of the above xxx method embodiments, and achieve the same technical effects, and are not repeated herein.

The embodiment of the application also provides an information transmission system, which comprises: the terminal can be used for executing the steps of the information transmission method, and the network side device can be used for executing the steps of the information transmission method.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. An information transmission method, comprising:

2. The method of claim 1, wherein the third device obtaining the indication information sent from the first device and the second device comprises:

the third device obtains the first indication information from the first device and obtains the second indication information from the second device.

3. The method of claim 2, wherein the first indication information and the second indication information both carry complete and identical indication information.

4. The method of claim 2, wherein the first and second indication information carry partial indication information, respectively, and wherein the first and second indication information constitute complete indication information.

5. The method of claim 2, wherein when the third device obtains the first indication information from the first device and the second indication information from the second device, the method further comprises:

the third device also obtains at least one of the following corresponding to the first and second indication information:

an indication information identifier;

resource indication information;

source device identification information;

identification information of the third device;

6. The method of claim 5, wherein the method further comprises:

the third device further obtains a segment indicator corresponding to the first indication information and the second indication information, and the segment indicator is used for indicating the position or the segment index of the first indication information and the second indication information in the complete indication information.

7. The method of claim 4, wherein the third device obtaining signal transmission parameters of the backscatter transmission based on the indication information, comprises:

and under the condition that the first indication information and the second indication information respectively carry part of indication information, the third equipment performs joint analysis on the first indication information and the second indication information to acquire signal transmission parameters of complete back scattering transmission.

8. The method of claim 7, wherein the third device performing joint parsing of the first indication information and the second indication information comprises:

9. A method according to claim 3, wherein the third device obtains signal transmission parameters of the backscatter transmission according to the indication information, comprising:

under the condition that the complete indication information carried by the first indication information and/or the second indication information is determined, determining the complete indication information according to the first indication information and the second indication information, and acquiring signal transmission parameters of back scattering transmission according to the complete indication information;

10. The method of claim 5, wherein prior to the third device obtaining signal transmission parameters for backscatter transmission based on the indication information, the method further comprises:

and determining whether the first indication information and/or the second indication information carries complete indication information or not according to the integrity marks in the first indication information and the second indication information.

11. The method of claim 1, wherein the first indication information and the second indication information are carried by at least one of:

a leader sequence;

downlink control information;

sidelink control information.

12. The method of claim 11, wherein the information carrying manner of the first indication information and the second indication information includes, but is not limited to, at least one of:

The first indication information and the second indication information are carried by downlink control information;

the first indication information and the second indication information are carried by the sidelink control information;

the first indication information is carried by downlink control information, and the second indication information is carried by auxiliary link control information;

the first indication information is carried by downlink control information, and the second indication information is carried by a preamble sequence;

the first indication information is carried by a preamble sequence, and the second indication information is carried by sidelink control information.

13. The method of claim 1, wherein the signal transmission parameters include at least one of:

time-frequency domain resources of the first signal and/or the second signal;

the modulation mode of the first signal and/or the second signal;

the coding mode of the first signal and/or the second signal;

a precoding mode of the first signal and/or the second signal;

period information of the first signal and/or the second signal;

the symbol length of the first signal and/or the second signal;

the transmission duration of the first signal and/or the second signal;

delimiter information of the first signal and/or the second signal;

Preamble information of the first signal and/or the second signal;

14. The method of claim 13, wherein the period information includes at least one transmission period length information and a number of transmission periods required to complete the backscatter transmission.

15. The method of claim 13, wherein the delimiter information comprises at least one of:

the length of the delimiter;

time offset between delimiter and indication information.

16. The method of claim 13, wherein the preamble information comprises at least one of:

the length of the preamble;

the type of preamble.

17. The method of claim 13, wherein the information related to frequency shifting the carrier signal comprises at least one of:

whether or not frequency shifting is supported;

a center frequency point after frequency shifting;

bandwidth.

18. The method of claim 1, wherein the first device and the second device are at least one of:

network side equipment;

and a terminal device.

19. An information transmission apparatus, comprising:

20. An information transmission method, comprising:

the first device sends first indication information to the third device and sends third indication information to the second device; the third indication information is used for indicating to send second indication information to the second equipment, and the first indication information and the second indication information are used for indicating the third equipment to acquire signal transmission parameters for back scattering transmission;

The first device sends a fourth signal to a fourth device;

21. The method of claim 20, wherein the first indication information and the second indication information both carry complete and identical indication information.

22. The method of claim 20, wherein the first and second indication information carry partial indication information, respectively, and wherein the first and second indication information constitute complete indication information.

23. The method of claim 20, wherein when the first device sends the first indication information to the third device and sends the third indication information to the second device, the method further comprises:

an indication information identifier;

resource indication information;

source device identification information;

identification information of the third device;

24. The method of claim 23, wherein the method further comprises:

25. The method of claim 20, wherein the first indication information is carried by at least one of:

a leader sequence;

downlink control information;

sidelink control information.

26. The method of claim 20, wherein the signal transmission parameters include at least one of:

Time-frequency domain resources of the first signal and/or the second signal;

the modulation mode of the first signal and/or the second signal;

the coding mode of the first signal and/or the second signal;

a precoding mode of the first signal and/or the second signal;

period information of the first signal and/or the second signal;

the symbol length of the first signal and/or the second signal;

the transmission duration of the first signal and/or the second signal;

delimiter information of the first signal and/or the second signal;

preamble information of the first signal and/or the second signal;

27. The method of claim 20, wherein the first device and the second device are at least one of:

network side equipment;

and a terminal device.

28. An information transmission apparatus, comprising:

29. An information transmission method, comprising:

the second device receives third indication information from the first device;

30. The method of claim 29, wherein after the second device sends second indication information to a third device according to the third indication information, the method further comprises:

The second device receiving a second signal from the third device;

wherein the second signal is a backscatter transmission signal of the third device.

31. The method of claim 29, wherein when the second device sends second indication information to a third device according to the third indication information, the method further comprises:

an indication information identifier;

resource indication information;

source device identification information;

identification information of the third device;

32. The method of claim 29, further comprising:

33. The method of claim 29, wherein the second indication information is carried by at least one of:

a leader sequence;

downlink control information;

sidelink control information.

34. The method of claim 30, wherein the signal transmission parameters include at least one of:

time-frequency domain resources of the second signal;

the modulation mode of the second signal;

the coding mode of the second signal;

a precoding mode of the second signal;

period information of the second signal;

the symbol length of the second signal;

a transmission time period of the second signal;

delimiter information of the transmission duration of the second signal;

preamble information of the second signal;

the second signal is related to frequency shifting the carrier signal.

35. The method of claim 30, wherein the third signal is a signal obtained by amplifying the second signal, or wherein the third signal is a signal obtained by demodulating and decoding the second signal and then recoding and modulating the second signal.

36. The method of claim 29, wherein the first device and the second device are at least one of:

Network side equipment;

and a terminal device.

37. An information transmission apparatus, comprising:

38. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implements the method of information transmission according to any one of claims 1 to 18, or implements the method of information transmission according to any one of claims 20 to 27, or implements the steps of the method of information transmission according to any one of claims 29 to 36.

39. A network side device comprising a processor and a memory storing a program or instructions executable on the processor, the program or instructions implementing the method of information transmission according to any one of claims 1 to 18, or the method of information transmission according to any one of claims 20 to 27, or the steps of the method of information transmission according to any one of claims 29 to 36, when executed by the processor.

40. A readable storage medium, characterized in that the readable storage medium stores thereon a program or instructions, which when executed by a processor, implements the information transmission method according to any one of claims 1 to 18, or implements the information transmission method according to any one of claims 20 to 27, or implements the steps of the information transmission method according to any one of claims 29 to 36.