Data transmission methods, communication device and storage medium

Abstract

Provided in the embodiments of the present disclosure are data transmission methods, a communication device and a storage medium. A data transmission method executed by a first terminal may comprise: sending first data to a first device on a second resource selected from among first resources, wherein the second resource is one or more of the first resources, the first resources are predefined resources, the first device is a network device or a second terminal, and the second terminal is an intermediate node for information transmission between the first terminal and the network device.

Description

Data transmission method, communication device and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a data transmission method, communication equipment, and storage medium. Background Art

[0002] Traditional IoT devices are typically powered by conventional batteries with limited lifespans. If the batteries run out, the device becomes unusable, requiring battery replacement or even replacement. Maintaining IoT network operations and replacing batteries can be challenging in extreme environments. For example, if the batteries of IoT devices buried underground run out, replacing them or replacing them with new ones is extremely troublesome.

[0003] In view of this, an IoT device based on ambient energy communication is proposed. This IoT device can be battery-free or have limited energy storage capacity (for example, using capacitors), and can be powered by harvesting radio waves, light, motion, heat, energy provided by wireless signals transmitted by other devices, or any other suitable power source.

[0004] Summary of the Invention

[0005] Embodiments of the present disclosure provide a data transmission method, a communication device, and a storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, a data transmission method is provided, which is executed by a first terminal, and the first terminal is an ambient IoT device; the method includes: sending first data to the first device on a second resource selected from the first resource; the second resource is one or more of the first resources; the first resource is a predefined resource; the first device is a network device or a second terminal; the second terminal is an intermediate node for information transmission between the first terminal and the network device.

[0007] According to a second aspect of an embodiment of the present disclosure, a data transmission method is provided, which is executed by a first device, wherein the first device includes a network device and / or a second terminal; the method includes: receiving first data sent by a first terminal on a first resource; the first resource is a predefined resource; the first device is a network device or a second terminal; the second terminal is an intermediate node for information transmission between the first terminal and the network device.

[0008] According to a third aspect of an embodiment of the present disclosure, a first terminal is provided. The first terminal is an ambient IoT device. The first terminal includes:

[0009] A sending module is configured to send first data to a first device on a second resource selected from the first resource; the second resource is one or more of the first resources; the first resource is a predefined resource; the first device is a network device or a second terminal; the second terminal is an intermediate node for information transmission between the first terminal and the network device.

[0010] According to a fourth aspect of an embodiment of the present disclosure, a first device is provided, wherein the first device includes a network device and / or a second terminal; the first device includes:

[0011] a receiving module, configured to receive first data sent by a first terminal on a first resource;

[0012] The first resource is a predefined resource; the first device is a network device or a second terminal; the second terminal is an intermediate node for information transmission between the first terminal and the network device. According to the fifth aspect of an embodiment of the present disclosure, a communication device is provided, wherein the communication device includes: one or more processors; wherein the processor is used to call instructions so that the communication device executes the downlink control information data transmission method provided by any technical method of the first aspect to the second aspect.

[0013] According to the sixth aspect of an embodiment of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions, which, when the instructions are executed on a communication device, enable the communication device to execute the downlink control information data transmission method provided by any aspect from the first aspect to the second aspect.

[0014] The technical approach provided by the embodiments of the present disclosure can configure resources for the first terminal to autonomously send data through a first message, thereby reducing wireless interference caused by the first terminal randomly selecting resources to send data, improving the data sending quality of the first terminal and / or purifying the wireless environment.

[0015] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not restrictive of the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the embodiments of the present disclosure.

[0017] FIG1A is a schematic diagram showing an architecture of a communication system according to an exemplary embodiment;

[0018] FIG1B is a schematic diagram showing wireless communication based on a backscatter transmission mechanism according to an exemplary embodiment;

[0019] FIG1C is a schematic topology diagram illustrating wireless communication using a backscatter transmission mechanism according to an exemplary embodiment;

[0020] FIG1D is a schematic diagram showing wireless communication based on a backscatter transmission mechanism according to an exemplary embodiment;

[0021] FIG1E is a schematic topology diagram illustrating wireless communication using a backscatter transmission mechanism according to an exemplary embodiment;

[0022] FIG1F is a topological diagram illustrating wireless communication using a backscatter transmission mechanism according to an exemplary embodiment;

[0023] FIG1G is a topological diagram illustrating wireless communication using a backscatter transmission mechanism according to an exemplary embodiment;

[0024] FIG1H is a schematic diagram of a device that performs wireless communication using three backscatter transmission mechanisms according to an exemplary embodiment;

[0025] FIG2A is a schematic flow chart showing a data transmission method according to an exemplary embodiment;

[0026] FIG2B is a schematic flow chart showing a data transmission method according to an exemplary embodiment;

[0027] FIG3 is a schematic flow chart showing a data transmission method according to an exemplary embodiment;

[0028] FIG4 is a schematic flow chart showing a data transmission method according to an exemplary embodiment;

[0029] FIG5A is a schematic diagram showing an effect of resource allocation according to an exemplary embodiment;

[0030] FIG5B is a schematic flow chart showing a data transmission method according to an exemplary embodiment;

[0031] FIG5C is a schematic flow chart showing a data transmission method according to an exemplary embodiment;

[0032] FIG6A is a schematic structural diagram of a first terminal according to an exemplary embodiment;

[0033] FIG6B is a schematic structural diagram of a first device according to an exemplary embodiment;

[0034] FIG7A is a schematic structural diagram of a communication device according to an exemplary embodiment;

[0035] FIG7B is a schematic structural diagram of a chip according to an exemplary embodiment. DETAILED DESCRIPTION

[0036] The embodiments of the present disclosure provide a downlink control information data transmission method, a communication device, a communication system, and a storage medium.

[0037] A first aspect provides a method for transmitting downlink control information data, performed by a terminal, comprising: sending first data to a first device on a second resource selected from a first resource; the second resource being one or more of the first resources; the first resource being a predefined resource; the first device being a network device or a second terminal; and the second terminal being an intermediate node for information transmission between the first terminal and the network device. Based on the above scheme, a first message can be used to configure the resources for autonomously transmitting data by the first terminal, thereby reducing wireless interference caused by the first terminal randomly selecting resources for data transmission, improving the data transmission quality of the first terminal, and / or purifying the wireless environment.

[0038] In some embodiments of the first aspect, the method further comprises:

[0039] Receive feedback information sent by the first device; the feedback information is used by the first terminal to determine whether the first device has successfully received the first data.

[0040] Based on the above solution, the first device will also send feedback information to the first terminal, so that the first device knows whether the data of the first terminal is sent successfully.

[0041] In some embodiments of the first aspect, before sending the first data to the first device on the second resource selected from the first resource, the method further includes:

[0042] A first message sent by the first device is received; the first message includes a first configuration of a first resource; the first device includes the network device and / or the second terminal.

[0043] Based on the above solution, the network device can flexibly configure the first resource according to network needs by sending the first message.

[0044] In some embodiments of the first aspect, the first message further includes at least one of the following: a power control parameter; a power control parameter used to control the transmission power of the first terminal; and timer information used to determine a time window for the first terminal to receive feedback information of the first data.

[0045] Based on the above solution, the first message not only configures the resources for the first terminal to send the first data, but also carries power control information and / or timer information to determine the behavior of the first terminal related to sending the first data.

[0046] In some embodiments of the first aspect, the power control parameter includes at least one of the following: an initial power value; and a power ramp-up step value.

[0047] Based on the above solution, the power control parameter can control the power of data transmission of the first terminal, thereby avoiding the deterioration of the wireless environment caused by excessive transmission power, and also avoiding the problem of high transmission failure rate caused by insufficient transmission power.

[0048] In some embodiments of the first aspect, the method further includes: determining the transmission power for sending the first data for the first time based on the initial power value; and / or, when the nth transmission of the first data fails, determining the transmission power for sending the first data for the n+1th time based on the power climbing step value; n is a positive integer.

[0049] Based on the above solution, it is defined that the transmit power is determined according to the initial power value and the power ramp-up step value.

[0050] In some embodiments of the first aspect, the first configuration includes at least one of the following: cell information, used to indicate the cell to which the first resource belongs; frequency domain information, used to indicate the frequency domain position of the first resource; and time domain information, used to indicate the time domain position of the first resource.

[0051] In some embodiments of the first aspect, the frequency domain information includes channel information, where the channel information is used to indicate the channel or subchannel where the first resource is located; and / or the time domain information includes timing information; the timing information includes: a timing index and / or an offset of the transmission timing corresponding to the first resource relative to a reference time domain position.

[0052] In some embodiments of the first aspect, the method further includes: sending a first identifier to the first device on the second resource; the first identifier is used to indicate the first terminal; and determining whether the first device successfully receives the first data based on the feedback information including the first identifier.

[0053] Based on the above solution, by receiving the first identifier, the first device can easily know the terminal that currently sends the first data.

[0054] In some embodiments of the first aspect, determining whether the first device successfully receives the first data based on the feedback information including the first identifier includes at least one of the following: the feedback information includes the first identifier, determining that the first device successfully receives the first data; the feedback information does not include the first identifier, determining that the first device does not successfully receive the first data.

[0055] In some embodiments of the first aspect, the first identifier includes at least one of the following: a device identifier of the first terminal; a first value; a first random number generated based on the first value; a second random number specified by the network device; a second identifier generated based on the first identifier; the first identifier includes a first resource identifier of a second resource and / or a first sequence identifier of a random access sequence; a third identifier generated based on the first identifier and the first value.

[0056] In some embodiments of the first aspect, the method further includes: receiving feedback information sent by the first device; the feedback information is used by the first terminal to determine whether the first device successfully receives the first data.

[0057] In some embodiments of the first aspect, receiving feedback information sent by the first device includes: after sending the first data, starting a first timer according to timer information; and receiving the feedback information sent by the first device within a timing range of the first timer.

[0058] In some embodiments of the first aspect, the first message also includes a second configuration of the third resource; the method also includes: before sending the first data to the first device on the second resource selected from the first resource, selecting a fourth resource from the third resource according to the second configuration to send a random access request; the fourth resource is one or more of the third resources; receiving a random access response sent by the first device; and selecting the second resource from the first resource based on the random access response.

[0059] In some embodiments of the first aspect, receiving a random access response sent by the first device includes: starting a second timer after sending the random access request; and receiving the random access response within a timing range of the second timer.

[0060] In some embodiments of the first aspect, sending the first data to the first device on a second resource selected from the first resource includes:

[0061] A random access response to the first terminal is received within the second timer, and first data is sent to the first device on a second resource selected from the first resource.

[0062] In some embodiments of the first aspect, the method further includes: determining whether a random access response for the first terminal is received based on information content carried in a random access response received within a timing range of the second timer.

[0063] In some embodiments of the first aspect, determining whether a random access response for the first terminal is received is performed based on information content carried by a random access response received within a timing range of a second timer, including at least one of the following: receiving a random access response containing a first resource identifier within the timing range of the second timer, determining that a random access response for the first terminal is received; the first resource identifier is used to indicate a fourth resource; receiving a random access response containing a first sequence identifier within the timing range of the second timer, determining that a random access response for the first terminal is received; the first sequence identifier is used to indicate a random access sequence carried by a random access request; receiving a random access response containing a fourth identifier within the timing range of the second timer, determining that a random access response for the first terminal is received; the fourth identifier is an identifier generated based on the first resource identifier and / or the first sequence identifier.

[0064] In some embodiments of the first aspect, the method also includes: if no random access response is received for the first terminal within the timing range of the second timer, a random access request is resent to the first device using the increased transmission power until a random access response is received for the first terminal, the power is increased to the maximum transmission power of the random access request, or the number of repetitions of the random access request reaches a maximum number.

[0065] In some embodiments of the first aspect, the random access response to the first terminal further includes at least one of the following:

[0066] A second resource identifier, used for the first terminal to select a second resource; a first value; a first random number, the first random number generates a second random number based on the first value, and the second random number is specified by the network device.

[0067] In some embodiments of the first aspect, the first resources include reserved resources within a random access window.

[0068] In some embodiments of the first aspect, the first message includes a system information block (SIB).

[0069] In some embodiments of the first aspect, each SIB is used to configure a first resource within a random access window.

[0070] The power control parameter includes at least one of the following: an initial power value; and a power ramp-up step value.

[0071] A second aspect provides a method for transmitting downlink control information data, wherein the method is performed by a first device, the first device comprising a network device and / or a second terminal; the method comprising: receiving first data sent by the first terminal on a first resource; the first resource being a predefined resource; the first device being a network device or a second terminal; and the second terminal being an intermediate node for information transmission between the first terminal and the network device. In some embodiments of the second aspect, before receiving the first data sent by the first terminal on the first resource, the method further comprises: sending a first message to the first terminal; the first message comprising a first configuration of the first resource.

[0072] In some embodiments of the second aspect, the first message further includes at least one of the following: a power control parameter; a power control parameter used to control the transmission power of the sending first terminal; timer information used to determine a time window for the first terminal to receive feedback information.

[0073] In some embodiments of the first aspect, the power control parameter includes at least one of the following: an initial power value; and a power ramp-up step value.

[0074] In some embodiments of the first aspect, the method further includes: determining the transmission power for sending the first data for the first time based on the initial power value; and / or, when the nth transmission of the first data fails, determining the transmission power for sending the first data for the n+1th time based on the power climbing step value; n is a positive integer.

[0075] In some embodiments of the second aspect, the first configuration includes at least one of the following: cell information, used to indicate the cell to which the first resource belongs; frequency domain information, used to indicate the frequency domain position of the first resource; and time domain information, used to indicate the time domain position of the first resource.

[0076] In some embodiments of the first aspect, the frequency domain information includes channel information, where the channel information is used to indicate the channel or subchannel where the first resource is located; and / or the time domain information includes timing information; the timing information includes: a timing index and / or an offset of the transmission timing corresponding to the first resource relative to a reference time domain position.

[0077] In some embodiments of the second aspect, the method further includes: receiving a first identifier sent by the first terminal on the first resource; the first identifier is used to indicate the first terminal;

[0078] Sending feedback information to the first terminal according to a reception status of the first data includes: determining whether the feedback information includes the first identifier according to the reception status of the first data; and sending the feedback information to the first terminal.

[0079] In some embodiments of the second aspect, determining whether the feedback information includes the first identifier based on the reception status of the first data includes at least one of the following: if the first data is received successfully, determining that the feedback information includes the first identifier; if the first data is received unsuccessfully, determining that the feedback information does not include the first identifier.

[0080] In some embodiments of the first aspect, the first identifier includes at least one of the following: a device identifier of the first terminal; a first value; a first random number generated based on the first value; a second random number specified by the network device; a second identifier generated based on the first identifier; the first identifier includes a first resource identifier of a second resource and / or a sequence identifier of a random access sequence; the second resource is a resource in the first resource used for the first device to receive the first data; a third identifier generated based on the first identifier and the first value.

[0081] In some embodiments of the second aspect, the method further includes: sending feedback information to the first terminal based on a reception status of the first data; the feedback information is used by the first device to determine whether the first device has successfully received the first data.

[0082] In some embodiments of the second aspect, the method also includes: starting a first timer according to timer information; sending feedback information to the first terminal according to the reception status of the first data, including: sending feedback information to the first terminal according to the reception status of the first data within the timing range of the first timer.

[0083] In some embodiments of the second aspect, the first message also includes a second configuration of the third resource; the method also includes: selecting a fourth resource from the third resource according to the second configuration to send a random access request; a random access response sent to the first terminal; receiving the first data sent by the first terminal on the first resource, including: after sending the random access response, receiving the first data sent by the first terminal on the first resource.

[0084] In some embodiments of the second aspect, the random access response is used by the first terminal to select a second resource from the first resource for sending the first data; the second resource is used by the first device to receive the first data.

[0085] In some embodiments of the second aspect, the random access response to the first terminal includes at least one of the following: a first resource identifier, used to indicate a fourth resource; a second resource identifier, used by the first terminal to select the second resource; a first value, the first value is used to generate an identifier that identifies the first device; a second random number; a first sequence identifier, used to indicate an identifier of a random access sequence corresponding to the random access request; and a second sequence identifier, used to identify a random access sequence for the first device to generate an identifier.

[0086] In some embodiments of the first aspect, the method further includes: receiving a random access request resent by the first terminal after power is ramped up.

[0087] In some embodiments of the second aspect, the first terminal includes an ambient IoT device.

[0088] In some embodiments of the second aspect, the first resources include reserved resources within a random access window.

[0089] In some embodiments of the second aspect, the first message includes a system information block (SIB).

[0090] In some embodiments of the second aspect, each SIB is used to configure a first resource within a random access window.

[0091] According to a third aspect, a first terminal is provided, wherein the first terminal is an ambient IoT device; the first terminal includes:

[0092] A sending module is configured to send first data to a first device on a second resource selected from the first resource; the second resource is one or more of the first resources; the first resource is a predefined resource; the first device is a network device or a second terminal; the second terminal is an intermediate node for information transmission between the first terminal and the network device.

[0093] A fourth aspect provides a first device, wherein the first device includes a network device and / or a second terminal; the first device includes:

[0094] a receiving module, configured to receive first data sent by a first terminal on a first resource;

[0095] The first resource is a predefined resource; the first device is a network device or a second terminal; and the second terminal is an intermediate node for information transmission between the first terminal and the network device.

[0096] In a fifth aspect, an embodiment of the present disclosure provides a communication device, the communication device including: one or more processors;

[0097] The processor is used to call instructions to enable the communication device to execute the downlink control information data transmission method described in the optional implementation of the first aspect to the second aspect.

[0098] In a sixth aspect, an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, which, when the instructions are executed on a communication device, enable the communication device to execute the downlink control information data transmission method described in the optional implementation methods of the first aspect to the second aspect.

[0099] In a seventh aspect, an embodiment of the present disclosure provides a program product. When the program product is executed by a communication device, the communication device executes the downlink control information data transmission method described in the optional implementation of the first to fifth aspects.

[0100] In an eighth aspect, an embodiment of the present disclosure provides a computer program, which, when executed on a computer, enables the computer to execute the downlink control information data transmission method described in the optional implementation manners of the first to fifth aspects.

[0101] It is understandable that the above-mentioned terminals, network devices, communication systems, program products, and computer programs are all used to execute the methods provided by the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0102] The embodiments of the present disclosure propose a downlink control information data transmission method, communication equipment, communication system and storage medium. The embodiments of the present disclosure are not exhaustive, but are only illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, the method after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0103] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0104] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0105] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "the", "the", etc., can mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article can be understood as a singular expression or a plural expression.

[0106] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0107] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0108] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "in one case A, in another case B," or "in one case A, in another case B" may include the following technical descriptions depending on the circumstances: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The same applies when there are more branches, such as A, B, and C.

[0109] In some embodiments, "A or B" and other descriptions may include the following technical approaches, depending on the circumstances: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, and C.

[0110] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different. For another example, if the description object is "information", then the "first category of information" and the "second category of information" can be the same information or different information, and their contents can be the same or different.

[0111] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0112] In some embodiments, terms such as "...", "determine...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0113] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0114] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0115] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0116] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0117] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0118] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0119] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0120] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0121] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0122] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0123] FIG1A is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0124] As shown in Figure 1A, a communication system 100 includes a terminal 101 and a network device 102. The network device 102 may include an access network device and / or a core network device.

[0125] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0126] In some embodiments, the terminal is also referred to as User Equipment (UE).

[0127] In some embodiments, the access network device may be, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0128] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0129] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0130] In some embodiments, the core network device may be a single device including a first network element, or may be a plurality of devices or a group of devices, each including a first network element. The network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0131] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present disclosure is also applicable to similar technical problems.

[0132] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1A , or a portion thereof, but are not limited thereto. The entities shown in FIG1A are illustrative only. The communication system may include all or part of the entities shown in FIG1A , or may include other entities other than those shown in FIG1A . The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0133] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems using configuration methods for other resources, and next-generation systems based on and extending these systems. Furthermore, multiple systems may be combined (for example, LTE and NR).

[0134] In some cases, IoT devices are often powered by traditional batteries with limited lifespans, negatively impacting the user experience. The expected astronomical growth in the number of IoT devices, coupled with the massive scale of these devices, has pushed maintenance expenses, including labor and battery costs, to a whole new level. Billions of traditional batteries are discarded each year, with only a small fraction effectively recycled, negatively impacting the Earth's ecosystem. Maintaining IoT network operations and replacing batteries can be extremely challenging in extreme environmental conditions. Battery-free IoT communications have been proposed to improve network performance and sustainability, expanding their application scenarios. Furthermore, battery-free communications are more environmentally friendly and safer for children and the elderly. Eliminating traditional batteries significantly reduces device size and cost, paving the way for a variety of new applications.

[0135] In some implementations, various Low Power Wide Area (LPWA) technologies, such as Machine Type Communication (MTC), Narrow Band Internet of Things (NB-IoT), and Reduced Capability (RedCap), have been developed to meet the growing demands of various vertical sectors. These LPWA technologies offer low cost, low power consumption, and large-scale connectivity, meeting the requirements of many applications. However, many use cases and applications remain unaddressed. First, battery-powered devices are not suitable, such as in extreme environmental conditions (e.g., high voltage, extremely high / low temperatures, and humid environments). Second, maintenance-free devices are required (e.g., devices without traditional batteries requiring replacement). Finally, ultra-low complexity, very small device size / form factor (e.g., mm thickness), and extended lifecycles are required. Ambient-powered IoT devices are promising technologies that can address these unmet needs. Ambient-powered IoT devices are IoT devices powered by energy harvesting, either without batteries or with limited energy storage capabilities (e.g., using capacitors). Energy is collected from radio waves, light, motion, heat, or any other suitable power source.

[0136] Energy obtained from the environment can drive data transmission and wireless communication of sensing nodes. The current mainstream low-power IoT communication chips (such as BLE, LoRa, NB-IoT) have a transmit and receive power consumption of tens or even hundreds of milliwatts, while the energy obtained by environmental energy harvesting is only at the microwatt level, which is unable to drive these types of nodes to work. Therefore, a new wireless communication technology is needed to reduce communication energy consumption to tens of microwatts or even less than ten microwatts. The current mainstream method uses backscatter communication technology. Backscatter Communications is one of the key technologies for building a green, energy-saving, low-cost, and flexibly deployable future Internet of Things, and is an important means to achieve "Intelligent Connection of Everything". The methods that can be used include backscatter transmission (Backscatter Communications) technology.

[0137] As shown in Figure 1B, backscatter transmission can utilize the principle of RF signal backscattering to design extremely low-power modulation and transmission technologies. A reader sends a physical layer signal to an ambient IoT device. This physical layer signal can be a pulse signal or other AC signal. In some embodiments, this physical layer signal is used to provide energy for the ambient IoT device to transmit the signal. Therefore, this physical layer signal can be referred to as an excitation signal or trigger signal. For example, since a portion of the excitation signal is reflected when it reaches the ambient IoT device, the ambient IoT device can adjust the matching between the receiving antenna and the impedance according to the intended information to enhance the reflection of the incident excitation signal and modulate the acquired sensor data onto the reflected signal to complete the data transmission. This process is similar to a reflector. Compared to other communication technologies, backscatter transmission does not require complex RF structures, reducing the use of components such as power amplifiers, high-precision crystal oscillators, duplexers, and high-precision filters. It also does not require complex baseband processing. Therefore, it can simplify the design of ambient IoT devices and significantly reduce the cost of ambient IoT device nodes. Ambient IoT devices are IoT devices that use environmental energy to operate. This environmental energy can include the aforementioned wireless signal energy, as well as other environmental capabilities such as geothermal energy and / or light energy.

[0138] Here, the device that sends a physical layer signal to the ambient IoT device and triggers the ambient IoT device to return a reflected signal can be called an anchor point of the ambient IoT device reader.

[0139] It is worth noting that an ambient IoT device is a device that uses the backscatter transmission mechanism for wireless communication. In specific implementations, other devices can also use the backscatter transmission mechanism for wireless communication.

[0140] The anchor point or reader of the ambient IoT device may be a network node of a wireless communication network, such as an access network device, a relay node (or intermediate node), or a terminal.

[0141] Backscatter transmission network architectures can include but are not limited to the following:

[0142] Architecture 1: As shown in Figure 1C, uplink (UL) and downlink (DL) data transmission is performed directly between ambient IoT devices and access network devices.

[0143] Architecture 2: As shown in Figure 1D, DL and UL data transmission occurs indirectly between ambient IoT devices and access network equipment. Intermediary nodes (also called auxiliary nodes) are present to forward data. These nodes can be relays, integrated access backhaul (IAB), user equipment (UE), or repeaters (RP).

[0144] Architecture 3: As shown in Figure 1E, data is directly transmitted between the ambient IoT device and the access network device on the uplink (UL), and an auxiliary node exists on the downlink (DL) to assist the base station and the ambient IoT device in downlink transmission. As shown in Figure 1F, data is directly transmitted between the ambient IoT device and the access network device on the DL, and an auxiliary node exists on the UL to assist the base station and the ambient IoT device in uplink transmission. Exemplarily, the auxiliary node can be a relay, an integrated access backhaul (IAB) node, a first terminal, and a network controlled repeater (NCR).

[0145] Architecture 4: As shown in Figure 1G, ambient IoT devices and UEs directly receive and transmit data on the downlink and uplink. The UE collects data and forwards it to the network.

[0146] Ambient IoT devices are all capable of performing reflection and scattering. In some embodiments, ambient IoT devices can be classified based on whether they can amplify signals. In some embodiments, ambient IoT devices can be classified based on whether they can generate their own signals, rather than relying solely on reflection and scattering signals.

[0147] As shown in Figure 1H, ambient IoT devices that use the backscatter transmission mechanism for wireless communication can be divided into the following three types:

[0148] Type A: No energy storage, cannot generate or amplify signals independently, and can only perform backscatter transmission.

[0149] Type B: Has energy storage, cannot generate signals independently, and can only perform backscatter transmission. The use of stored energy can include amplification of the backscatter signal.

[0150] Type C: It has energy storage and can generate signals independently, that is, it has active radio frequency (RF) components for transmission.

[0151] As shown in FIG2A , an embodiment of the present disclosure provides a data transmission method, which is performed by a communication system. The method may include:

[0152] S2101: The first device sends a first message to the first terminal.

[0153] In some embodiments, the first device includes a network device and / or a second terminal.

[0154] In some embodiments, the network device may include an access network device. In some embodiments, the first terminal may be an ambient IoT device, etc.

[0155] Exemplarily, the first device serves as a reader of the first terminal and can perform CW transmission and / or BS reception for the first terminal.

[0156] In some embodiments, the network device, as the first device, broadcasts, multicasts, or unicasts a downlink message to the terminal. The downlink message is a type of the aforementioned first message. The first message may include but is not limited to an RRC message, MAC signaling, or DCI.

[0157] In some embodiments, the first message may be a system information block (SIB).

[0158] In some embodiments, the SIB may be applied to the SIB of a random access window.

[0159] In some embodiments, a random access window includes one or more reserved resources. The reserved resources may be used for random access.

[0160] In some embodiments, the first message may include a first configuration.

[0161] In some embodiments, the first configuration indicates at least a first resource.

[0162] In some embodiments, the first configuration may include:

[0163] resource information, indicating the first resource and / or the third resource;

[0164] The power control information is used to control the transmit power of the first terminal. Exemplarily, the power control information is used to control the transmit power of the first terminal during a random access process and / or the transmit power for data transmission.

[0165] In some embodiments, the resource information may include time domain information and / or frequency domain information. The time domain information indicates the time domain location of the first resource and / or the third resource. The frequency domain information indicates the frequency domain location of the first resource and / or the third resource.

[0166] In some embodiments, the first message may further include at least one of the following:

[0167] Cell information is used to indicate a cell for performing the first data transmission. Exemplarily, the cell information may include but is not limited to a cell identifier or a cell index. For example, the cell identifier may include but is not limited to a physical cell identifier (PCI) and / or a high-layer cell identifier.

[0168] For example, when the first terminal has multiple serving cells, the cell identifier may indicate that the cell sending the first data may be a primary cell and / or a secondary cell.

[0169] In some embodiments, the first resource and / or the third resource may include but is not limited to a reserved resource of the network device. Exemplarily, each SIB is used to configure the first resource within a random access window.

[0170] In some embodiments, the first resource and / or the third resource may include, but is not limited to, non-reserved resources of the network device.

[0171] In some embodiments, the first resource and / or the third resource may include but is not limited to resources of a random access related channel.

[0172] In some embodiments, the third resource may be used for random access related transmissions.

[0173] In some embodiments, the first resource may be used for data transmission following random access.

[0174] In some embodiments, the first configuration includes at least one of the following:

[0175] Cell information, used to indicate the cell to which the first resource and / or the third resource belongs;

[0176] Frequency domain information, used to indicate the frequency domain position of the first resource and / or the third resource;

[0177] The time domain information is used to indicate the time domain position of the first resource and / or the third resource.

[0178] In some embodiments, the frequency domain information includes channel information, which is used to indicate the channel or subchannel where the first resource is located; and / or, the time domain information includes timing information; the timing information includes: the timing index and / or the offset of the transmission timing corresponding to the first resource relative to the reference time domain position.

[0179] Exemplarily, the reference time domain position may be the start time of radio frame 0 or the start time of the current radio frame, etc. In some embodiments, the resources indicated by the first configuration may be used for active data reporting by the first terminal. For example, the resources indicated by the first configuration may be used for transmission of device-originating traffic data ((Device-Originated, DO) traffic includes DO autonomous, DO-A).

[0180] In some embodiments, the related channels for random access may include but are not limited to at least one of the following: a physical random access channel (RACH) carrying a random access request, a physical downlink shared channel (PDSCH) for a random access response, and / or a physical downlink control channel (PDCCH) for scheduling a random access response.

[0181] It is worth noting that the step of the first device sending the first message to the first terminal may be optional. For example, the first resource may be a predefined resource agreed upon in the protocol, in which case the first device does not need to send the first message to the first terminal. However, the first device sends the first message to the first terminal, thereby flexibly configuring the first resource through the first message.

[0182] S2102: The first terminal sends a random access request on a fourth resource selected from the third resource.

[0183] In some embodiments, the third resource may correspond to a resource pool or resource set. The fourth resource may be one or more resources selected from the resource pool or resource set.

[0184] Exemplarily, when the first terminal has first data to send, it may first select a fourth resource from the third resource to send a random access request.

[0185] Exemplarily, when the first terminal has first data to send, it may select the third resource closest to the current moment in the time domain as the fourth resource to send a random access request.

[0186] Also exemplarily, when the first terminal has first data to send, it performs wireless listening on each third resource. When no random access request is heard from other devices or the listening signal power of the random access channel is lower than a specified threshold, it selects a fourth resource from the third resources to send a random access request.

[0187] In some embodiments, the random access request may include at least a target random access preamble selected by the first terminal from among candidate random access preambles.

[0188] In some embodiments, the random access request may further include at least one of the following: a first value; a first random number, which may or may not be generated based on the first value; and a device identifier of the first terminal.

[0189] In some embodiments, the random access request carrying the above content can facilitate the subsequent first device to select the first terminal allowed to access.

[0190] Exemplarily, the first value may be a fixed value or a constant value. For example, different first terminals have different first values, or different types of first terminals have first values.

[0191] Exemplarily, the first random number may be a random number generated using a random access algorithm before each random access request by the first terminal.

[0192] In some embodiments, the first random number may be generated based on the first value. For example, a second value is first generated based on a random algorithm, and then the second value that satisfies a specified size relationship with the first value is set as the first random number.

[0193] In some embodiments, the first value may be Q, and the first random number may be a random number generated based on Q. For example, the first random number may be 0 to 2 Q Any number between -1.

[0194] The device identification of the first terminal may include, but is not limited to, an International Mobile Equipment Identity (IMEI), an International Mobile Subscriber Identification Number (IMSI), and / or the tail number of the device identification of the first device.

[0195] In some embodiments, the first random access request is sent according to the initial power in the power control parameter carried in the first message.

[0196] In some embodiments, the first random access request is sent according to a random access power agreed upon in the protocol.

[0197] S2103: The first device sends a random access response to the first terminal.

[0198] In some embodiments, after receiving the random access request, the first device starts a second timer and sends a random access response to the first terminal within a timing range of the second timer.

[0199] In some other embodiments, the first device starts a second timer at each random access request sending opportunity, and sends a random access response within a timing range of the second timer according to the random access request received at the corresponding sending opportunity.

[0200] In some embodiments, the random access response includes but is not limited to at least one of the following:

[0201] A resource identifier, used to indicate a resource identifier for sending a random access resource; the random access resource may be used to transmit a random access request;

[0202] A sequence identifier, used to indicate the identifier of the pre-random access sequence carried in the random access request;

[0203] An identifier generated based on the resource identifier and the sequence identifier.

[0204] Of course, the above are only specific examples of the content carried by the random access response, and the specific implementation is not limited to the above examples.

[0205] S2104: The first terminal determines whether a random access response to the first terminal is received.

[0206] In some embodiments, it is determined whether a random access response to the first terminal is received based on information content carried in a random access response received within a timing range of the second timer.

[0207] In some embodiments, if the first terminal does not receive a random access response within a timing range of the second timer, it determines that the random access request for the first terminal is not received.

[0208] In some embodiments, the first terminal stops receiving random access responses when the second timer expires.

[0209] In some embodiments, when the first terminal receives a random access request within the timing range of the second timer, the first terminal determines whether a random access request for the first terminal is received based on information content carried in the received random access request.

[0210] In some embodiments, the timing duration of the second timer may be indicated by the first message. For example, the first message carries the timing information of the second timer. In other embodiments, the timing duration of the second timer may be agreed upon by a protocol.

[0211] In some embodiments, a random access response including a first resource identifier is received within a timing range of a second timer, and it is determined that a random access response for the first terminal is received; the first resource identifier is used to indicate a fourth resource.

[0212] In some embodiments, a random access response including a first sequence identifier is received within a timing range of the second timer, and it is determined that a random access response for the first terminal is received; the first sequence identifier is used to indicate a random access sequence carried in the random access request.

[0213] In some embodiments, a random access response including a fourth identifier is received within the second timing range, and it is determined that a random access response for the first terminal is received; the fourth identifier is an identifier generated based on the first resource identifier and / or the first sequence identifier.

[0214] Illustratively, the fourth identifier may be generated using at least one of the following methods: ID1*Nsequence; ID1*Indexsequence; ID1+Nsequence; ID1+Indexsequence; or ID1+T.

[0215] ID1 is the first resource identifier. Nsequence is the number of candidate sequences of the random access preamble sequence carried in the random access request.

[0216] Indexsequence may be the order of the random access preamble sequence represented by the first resource identifier in the candidate sequence.

[0217] T is the specified bias threshold.

[0218] Of course, the above is only an example of the fourth identifier, and the specific implementation is not limited to the above example.

[0219] S2105: The first terminal fails in random access and resends a random access request to the first device using the increased transmit power.

[0220] In some embodiments, the first terminal does not receive a random access response to the first terminal within a timing range of the second timer, and determines that the random access of the first terminal fails.

[0221] In some embodiments, for example, the power ramp-up step size is used to increase the transmit power of the previous failed random access request by one step size, and then the random access request is resent.

[0222] In some embodiments, when the first terminal does not receive a random access response to the first terminal, it can gradually increase the transmission power and then resend the random access request to the first device until a random access response to the first terminal is received, the power is increased to the maximum transmission power of the random access request, or the number of repetitions of the random access request reaches the maximum number.

[0223] In some embodiments, transmit power is ramped up according to a power ramp step value.

[0224] In some embodiments, the first message may include a power ramp-up step value, and the power ramp-up step value may be used for simultaneously ramping up the transmit power of the random access request and / or data transmission.

[0225] In some embodiments, the first message may include a power ramp-up step value of a random access request, and the power ramp-up step value of the random access request may be dedicated to the random access request.

[0226] In some embodiments, the first message may include a power ramp-up step value of a random access request, and the power ramp-up step value of the random access request may be dedicated to the random access request.

[0227] In some embodiments, the first message does not include the power ramp-up step value for the random access request. The power ramp-up step value determined by another predetermined party such as a protocol may be dedicated to the random access request.

[0228] S2106: Send first data to the first device based on the second resource selected from the first resource.

[0229] In some embodiments, upon receiving a random access response for the first terminal, first data is sent to the first device on a second resource selected from the first resources.

[0230] In some embodiments, the first resource may be a reserved resource or a non-reserved resource. Exemplarily, the first resource includes a reserved resource located within a random access window.

[0231] In some embodiments, the first data may include but is not limited to business data.

[0232] In some embodiments, the first data may be data related to an ambient IoT device.

[0233] In some embodiments, the first resource may correspond to a resource pool or resource set, and the second resource may be one or more resources selected from the resource pool or resource set.

[0234] In some implementations, upon receiving a random access response for the first terminal, the first data is sent to the first device on a second resource selected from the first resources.

[0235] Exemplarily, if the first terminal receives a random access response for the first terminal, it indicates that the random access of the first terminal is successful.

[0236] In some embodiments, based on the amount of the first data, it is determined whether to send the first data on the fourth resource or on the second resource. If it is determined to send the first data on the fourth resource, S2106 need not be executed. If it is determined to send the first data on the second resource, S2106 needs to be executed. Exemplarily, selecting the second resource from the first resource includes, but is not limited to, at least one of the following:

[0237] selecting, according to the second resource identifier carried in the random access response, a second resource from the first resource;

[0238] Selecting, according to the second random number sent by the network device, a second resource mapped to the second random number from the first resource;

[0239] randomly selecting a second resource from the first resource;

[0240] Selecting the first resource closest to the current moment in the time domain as the second resource;

[0241] A second resource is selected from the plurality of first resources indicated by the second resource identifier.

[0242] Exemplarily, based on the first resource identifier, a second resource is selected from the plurality of first resources indicated by the second resource identifier. Exemplarily, the second resource identifier may be a resource identifier of all or part of the first resources. For example, the second resource identifier may be an identifier of a resource set. For example, the second resource identifier may be a start and end identifier of the plurality of first resources.

[0243] In some embodiments, in other embodiments, the second resource identifier indicates multiple first resources, and the first terminal can randomly select a first resource from the multiple first resources, or select the resource with the largest number and the smallest number from the multiple first resources as the second resource.

[0244] Of course, the above is merely an example of selecting the second resource from the first resource, and the specific implementation is not limited to the above example.

[0245] In some embodiments, the transmission power for initially sending the first data is determined based on the initial power value.

[0246] In some embodiments, while sending the first data, the first terminal sends the first identifier to the first device on the second resource. It should be noted that sending the first identifier is an optional step.

[0247] In some embodiments, the first identifier includes at least one of the following:

[0248] a device identifier of the first terminal;

[0249] First value;

[0250] A first random number generated according to the first value;

[0251] a second random number specified by the network device;

[0252] A second identifier generated according to the first identifier; the first identifier includes a first resource identifier of the second resource and / or a first sequence identifier of the random access sequence;

[0253] A third identifier is generated based on the first identifier and the first value.

[0254] In some embodiments, the first identifier may further include another temporary identifier allocated by the network device to the first terminal. Exemplarily, the temporary identifier may include but is not limited to a Temporary Mobile Subscriber Identity (TMSI).

[0255] S2107: The first device sends feedback information.

[0256] In some embodiments, the feedback information may indicate whether the first device has successfully received the first data.

[0257] In some embodiments, the feedback information may indicate that the first device did not successfully receive the first data.

[0258] In some embodiments, the feedback information may indicate that the first device fails to decode the received first data.

[0259] In some embodiments, the feedback information indicates that the first data is successfully received and the sending of the first data is stopped.

[0260] In some embodiments, the feedback information will carry an identifier of the relevant terminal.

[0261] In some embodiments, the feedback information is received within a timing range of a first timer.

[0262] In some embodiments, the feedback information may further include:

[0263] The control information for the next data transmission of the corresponding terminal may include resource information and / or power information.

[0264] This resource information may indicate the resource location for the next data transmission by the corresponding terminal. For example, this resource information may include, but is not limited to, a channel number and / or an opportunity number. The channel number indicates the channel or subchannel for the next data transmission. The opportunity number may indicate the transmission opportunity used for the next data transmission.

[0265] The power information may indicate the transmit power of the corresponding terminal when sending data next time. For example, the power information may also include, but is not limited to, a power ramp value and a path loss value. For example, the path loss value may be used by the first terminal to determine the actual power value for sending data next time.

[0266] Exemplarily, the current feedback information is feedback information for the nth data transmission of the first terminal. The feedback information indicates that the nth data transmission is successful and carries control information for the first terminal to transmit data for the (n+1)th time.

[0267] For example, the random access request carries a data buffer report, which may indicate the amount of data to be sent by the first terminal. In this way, the first device can determine whether the first terminal still has data to report based on the amount of data already received from the first terminal. In this way, after successfully receiving a data transmission from the first terminal, the first device determines, based on the data buffer report, whether it is necessary to indicate control parameters for the next data transmission to the first terminal. If data transmission has already been completed, the feedback information does not need to carry control information for the next data transmission by the corresponding terminal. If data transmission has not yet been completed, the feedback information may carry control information for the next data transmission by the corresponding terminal.

[0268] [Corrected 27.06.2025 according to Rule 91] S2108: When the n-th transmission of the first data fails, the power is increased according to the power increase step value, and the increased transmission power is used as the transmission power for the n+1-th transmission of the first data.

[0269] In some embodiments, n is a positive integer.

[0270] In some embodiments, the feedback information carries an identifier of the corresponding device.

[0271] In some embodiments, the first terminal starts the first timer after the first terminal fails to send the first data for the nth time.

[0272] In some embodiments, when the first timer times out, reception of feedback information is stopped, and it is determined that the nth transmission of the first data has failed.

[0273] In some embodiments, when the first terminal receives feedback information within the timing range of the first timer, it determines whether the corresponding feedback information is feedback information for the first terminal according to an identifier carried in the feedback information.

[0274] In some embodiments, whether the feedback information carries the first identifier of the first terminal is used to determine whether the feedback information is feedback information for the first terminal.

[0275] For example, if the feedback information carries the first identifier of the first terminal, it is determined that the feedback information is feedback information for the first terminal.

[0276] For another example, if the feedback information does not carry the first identifier of the first terminal, it is determined that the feedback information is not feedback information for the first terminal.

[0277] In some embodiments, when the feedback information indicates that the first data fails to be sent, fails to be decoded, or local information indicating failure is received, it is determined that the nth sending of the first data fails.

[0278] In some embodiments, the power ramp-up for data retransmission is performed according to the power ramp-up step value in the downlink control message.

[0279] In some embodiments, the power ramp for data retransmission is performed according to a power ramp step value in a downlink control message that is used for both random access request and data transmission.

[0280] In some embodiments, the power ramp for data retransmission is performed according to a power ramp step value dedicated to the power ramp in the downlink control message.

[0281] In some embodiments, n is less than or equal to N; N is the maximum number of times a data is resent.

[0282] In some embodiments, when the nth transmission of the first data fails, the transmission power for the (n+1)th transmission of the first data is determined according to the power climbing step value until the maximum transmission power value is reached.

[0283] In some embodiments, the maximum transmit power value may be the maximum transmit power value supported by the first terminal and / or the maximum transmit power value specified by a power control parameter. In some embodiments, the timing duration of the first timer may be indicated by a timer carried in the first message. For example, the first timer duration may be the time window for receiving feedback information.

[0284] In other embodiments, the timing duration of the first timer may be agreed upon by a protocol.

[0285] As shown in FIG2B , this embodiment of the present invention provides a data transmission method, which is performed by a communication system. The method may include:

[0286] S2201: The first device sends a first message to the first terminal.

[0287] In some embodiments, the first device includes a network device and / or a second terminal.

[0288] In some embodiments, the network device may include an access network device. In some embodiments, the first terminal may be an ambient IoT device, etc.

[0289] Exemplarily, the first device serves as a reader of the first terminal and can perform CW transmission and / or BS reception for the first terminal.

[0290] In some embodiments, the network device, as the first device, broadcasts, multicasts, or unicasts a downlink message to the terminal. The downlink message is a type of the aforementioned first message. The first message may include but is not limited to an RRC message, MAC signaling, or DCI.

[0291] In some embodiments, the first message may be a system information block (SIB).

[0292] In some embodiments, the first message may include a first configuration.

[0293] In some embodiments, the first configuration indicates at least a first resource.

[0294] In some embodiments, the first configuration may include:

[0295] resource information, indicating the first resource and / or the third resource;

[0296] The power control information is used to control the transmit power of the first terminal. Exemplarily, the power control information is used to control the transmit power of the first terminal for data transmission.

[0297] In some embodiments, the first resource may include but is not limited to a reserved resource of the network device. Exemplarily, each SIB is used to configure the first resource within a random access window.

[0298] In some embodiments, the first resource may include, but is not limited to, a non-reserved resource of the network device.

[0299] In some embodiments, the first resource may include, but is not limited to, resources of a random access related channel.

[0300] In some embodiments, the first resource may be used as a resource for a terminal to perform a random access procedure and transmit small data.

[0301] In some embodiments, the resources indicated by the first configuration may be used for active data reporting by the first terminal. For example, the resources indicated by the first configuration may be used for device-autonomous transmission of traffic data (Device-Originated, DO) traffic includes DO autonomous, DO-A).

[0302] In some embodiments, the first message may further include at least one of the following:

[0303] Cell information is used to indicate a cell for performing the first data transmission. Exemplarily, the cell information may include but is not limited to a cell identifier or a cell index. For example, the cell identifier may include but is not limited to a physical cell identifier (PCI) and / or a high-layer cell identifier.

[0304] For example, when the first terminal has multiple serving cells, the cell identifier may indicate that the cell sending the first data may be a primary cell and / or a secondary cell.

[0305] For example, the optional real-time mode related to the first resource in the downlink message in S2201 can be found in S2101 of the embodiment corresponding to FIG. 2A .

[0306] S2202: The first terminal sends first data to the first device on a second resource selected from the first resource.

[0307] In some embodiments, the second resource belongs to one or more of the first resources.

[0308] In some embodiments, the first device may include but is not limited to a network device and / or a second terminal.

[0309] In some embodiments, the first terminal may randomly select a second resource from the first resource to send the first data.

[0310] In some embodiments, when the first terminal has data to send, it selects the first resource closest in the time domain to send the first data.

[0311] In some embodiments, while sending the first data, the first terminal sends the first identifier to the first device on the second resource. It should be noted that sending the first identifier is an optional step.

[0312] In some embodiments, the first identifier includes at least one of the following:

[0313] a device identifier of the first terminal;

[0314] First value;

[0315] A first random number generated according to the first value;

[0316] a second random number specified by the network device;

[0317] A second identifier generated according to the first identifier; the first identifier includes a first resource identifier of the second resource and / or a first sequence identifier of the random access sequence;

[0318] A third identifier is generated based on the first identifier and the first value.

[0319] S2203: The first device sends feedback information.

[0320] In some embodiments, the feedback information may indicate whether the first device has successfully received the first data.

[0321] In some embodiments, the feedback information may indicate that the first device did not successfully receive the first data.

[0322] In some embodiments, the feedback information may indicate that the first device fails to decode the received first data.

[0323] In some embodiments, the feedback information indicates that the first data is successfully received and the sending of the first data is stopped.

[0324] In some embodiments, the feedback information will carry an identifier of the relevant terminal.

[0325] In some embodiments, the feedback information is received within a timing range of a first timer.

[0326] In some embodiments, the feedback information may further include:

[0327] The control information for the next data transmission of the corresponding terminal may include resource information and / or power information.

[0328] This resource information may indicate the resource location for the next data transmission by the corresponding terminal. For example, this resource information may include, but is not limited to, a channel number and / or an opportunity number. The channel number indicates the channel or subchannel for the next data transmission. The opportunity number may indicate the transmission opportunity used for the next data transmission.

[0329] The power information may indicate the transmit power of the corresponding terminal when sending data next time. For example, the power information may also include, but is not limited to, a power ramp value and a path loss value. For example, the path loss value may be used by the first terminal to determine the actual power value for sending data next time.

[0330] Exemplarily, the current feedback information is feedback information for the nth data transmission of the first terminal. The feedback information indicates that the nth data transmission is successful and carries control information for the first terminal to transmit data for the (n+1)th time.

[0331] For example, the random access request carries a data buffer report, which may indicate the amount of data to be sent by the first terminal. In this way, the first device can determine whether the first terminal still has data to report based on the amount of data already received from the first terminal. In this way, after successfully receiving a data transmission from the first terminal, the first device determines, based on the data buffer report, whether it is necessary to indicate control parameters for the next data transmission to the first terminal. If data transmission has already been completed, the feedback information does not need to carry control information for the next data transmission by the corresponding terminal. If data transmission has not yet been completed, the feedback information may carry control information for the next data transmission by the corresponding terminal.

[0332] [Corrected 27.06.2025 according to Rule 91] S2204: When the n-th transmission of the first data fails, the power is increased according to the power increase step value, and the increased transmission power is used as the transmission power for the n+1-th transmission of the first data.

[0333] In some embodiments, n is a positive integer.

[0334] In some embodiments, the feedback information carries an identifier of the corresponding device.

[0335] In some embodiments, the first terminal starts the first timer after the first terminal fails to send the first data for the nth time.

[0336] In some embodiments, when the first timer times out, reception of feedback information is stopped, and it is determined that the nth transmission of the first data has failed.

[0337] In some embodiments, when the first terminal receives feedback information within the timing range of the first timer, it determines whether the corresponding feedback information is feedback information for the first terminal according to an identifier carried in the feedback information.

[0338] In some embodiments, whether the feedback information carries the first identifier of the first terminal is used to determine whether the feedback information is feedback information for the first terminal.

[0339] For example, if the feedback information carries the first identifier of the first terminal, it is determined that the feedback information is feedback information for the first terminal.

[0340] For another example, if the feedback information does not carry the first identifier of the first terminal, it is determined that the feedback information is not feedback information for the first terminal.

[0341] For example, the first identifier may be an identifier pre-configured for the first terminal. In other embodiments, the first identifier may be an identifier negotiated between the first terminal and the network device when the first terminal registers with the network. In still other embodiments, the first identifier may be an identifier negotiated between the first terminal and the network device when the first terminal randomly accesses the current cell or tracking area for the first time.

[0342] For example, the

[0343] In some embodiments, when the feedback information indicates that the first data fails to be sent, fails to be decoded, or local information indicating failure is received, it is determined that the nth sending of the first data fails.

[0344] In some embodiments, the power ramp-up for data retransmission is performed according to the power ramp-up step value in the downlink control message.

[0345] In some embodiments, the power ramp for data retransmission is performed according to a power ramp step value dedicated to the power ramp in the downlink control message.

[0346] In some embodiments, n is less than or equal to N; N is the maximum number of times a data is resent.

[0347] In some embodiments, when the nth transmission of the first data fails, the transmission power for the (n+1)th transmission of the first data is determined according to the power climbing step value until the maximum transmission power value is reached.

[0348] In some embodiments, the maximum transmit power value may be a maximum transmit power value supported by the first terminal and / or a maximum transmit power value specified by a power control parameter.

[0349] In some embodiments, the timing duration of the first timer may be indicated by a timer carried in the first message. For example, the timing range of the first timer is the time window for receiving feedback information.

[0350] In other embodiments, the timing duration of the first timer may be agreed upon by a protocol.

[0351] As shown in FIG3 , an embodiment of the present disclosure provides a data transmission method, which is performed by a first terminal and includes:

[0352] S3101: Receive the first message.

[0353] In some embodiments, a first message sent by a first device is received.

[0354] In some embodiments, the first device includes a network device and / or a second terminal.

[0355] In some embodiments, the first message includes a first configuration of the first resource.

[0356] In some embodiments, the network device may include an access network device. In some embodiments, the first terminal may be an ambient IoT device, etc.

[0357] Exemplarily, the first device serves as a reader of the first terminal and can perform CW transmission and / or BS reception for the first terminal.

[0358] In some embodiments, the network device, as the first device, broadcasts, multicasts, or unicasts a downlink message to the terminal. The downlink message is a type of the aforementioned first message. The first message may include but is not limited to an RRC message, MAC signaling, or DCI.

[0359] In some embodiments, the first message may be a system information block (SIB).

[0360] In some embodiments, the SIB may be applied to the SIB of a random access window.

[0361] In some embodiments, a random access window includes one or more reserved resources. The reserved resources may be used for random access.

[0362] In some embodiments, the first message may include a first configuration.

[0363] In some embodiments, the first configuration indicates at least a first resource.

[0364] In some embodiments, the first configuration may include:

[0365] resource information, indicating the first resource and / or the third resource;

[0366] The power control information is used to control the transmit power of the first terminal. Exemplarily, the power control information is used to control the transmit power of the first terminal during a random access process and / or the transmit power for data transmission.

[0367] In some embodiments, the resource information may include time domain information and / or frequency domain information. The time domain information indicates the time domain location of the first resource and / or the third resource. The frequency domain information indicates the frequency domain location of the first resource and / or the third resource.

[0368] In some embodiments, the first message may further include at least one of the following:

[0369] Cell information is used to indicate a cell for performing the first data transmission. Exemplarily, the cell information may include but is not limited to a cell identifier or a cell index. For example, the cell identifier may include but is not limited to a physical cell identifier (PCI) and / or a high-layer cell identifier.

[0370] For example, when the first terminal has multiple serving cells, the cell identifier may indicate that the cell sending the first data may be a primary cell and / or a secondary cell.

[0371] In some embodiments, the first resource and / or the third resource may include but is not limited to a reserved resource of the network device. Exemplarily, each SIB is used to configure the first resource within a random access window.

[0372] In some embodiments, the first resource and / or the third resource may include, but is not limited to, non-reserved resources of the network device.

[0373] In some embodiments, the first resource and / or the third resource may include but is not limited to resources of a random access related channel.

[0374] In some embodiments, the third resource may be used for random access related transmissions.

[0375] In some embodiments, the first resource may be used for data transmission following random access.

[0376] In some embodiments, the resources indicated by the first configuration may be used for active data reporting by the first terminal. For example, the resources indicated by the first configuration may be used for device-autonomous transmission of traffic data (Device-Originated, DO) traffic includes DO autonomous, DO-A).

[0377] In some embodiments, the related channels for random access may include but are not limited to at least one of the following: a physical random access channel (RACH) carrying a random access request, a physical downlink shared channel (PDSCH) for a random access response, and / or a physical downlink control channel (PDCCH) for scheduling a random access response.

[0378] In some embodiments, the optional implementation of S3101 can refer to any optional implementation of S2101 of the embodiment corresponding to FIG. 2A and / or S2201 of the embodiment corresponding to FIG. 2B .

[0379] S3102: Send a random access request on a fourth resource selected from the third resource.

[0380] In some embodiments, optional implementations of S3102 may refer to S2102 of the corresponding embodiment in FIG. 2A .

[0381] S3103: Receive a random access response.

[0382] In some embodiments, the first terminal starts a second timer after sending the random access response, and receives the random access response sent by the first device within a timing range of the second timer.

[0383] In some embodiments, the random access response includes but is not limited to at least one of the following:

[0384] A resource identifier, used to indicate a resource identifier for sending a random access resource; the random access resource may be used to transmit a random access request;

[0385] A sequence identifier, used to indicate the identifier of the pre-random access sequence carried in the random access request;

[0386] An identifier generated based on the resource identifier and the sequence identifier.

[0387] Of course, the above are only specific examples of the content carried by the random access response, and the specific implementation is not limited to the above examples.

[0388] S3104: Determine whether it is a random access response to the first terminal.

[0389] In some embodiments, if no random access response is received within a timing range of the second timer, it is determined that no random access response to the first terminal is received.

[0390] In some embodiments, if a random access response is received within a timing range of the second timer but the random access response does not carry information related to the first terminal, it is determined that no random access response for the first terminal is received.

[0391] In some embodiments, if a random access response is received within a timing range of the second timer and the random access response carries information related to the first terminal, it is determined that a random access response for the first terminal is received.

[0392] In some embodiments, the timing duration of the second timer may be indicated by the first message. For example, the first message carries the timing information of the second timer. In other embodiments, the timing duration of the second timer may be agreed upon by a protocol.

[0393] In some embodiments, optional implementations of S3104 may refer to S2104 of the corresponding embodiment in FIG. 2A .

[0394] S3105: Random access fails, and the random access request is resent using the increased transmit power.

[0395] In some embodiments, optional implementations of S3105 can refer to S2105 of the corresponding embodiment of FIG. 2A .

[0396] S3106: Send the first data.

[0397] In some embodiments, the random access is successful and the first data is sent.

[0398] In some embodiments, the first data is sent to the first device on a second resource selected from the first resource.

[0399] In some embodiments, optional implementations of S3106 may refer to S2106 of the embodiment corresponding to FIG. 2A or S2202 of the embodiment corresponding to FIG. 2B .

[0400] S3107: Receive feedback information.

[0401] In some embodiments, the feedback information may indicate whether the first data is successfully sent.

[0402] In some embodiments, the feedback information may indicate whether the first data is successfully received.

[0403] In some embodiments, the feedback information may indicate whether the first device has successfully received the first data.

[0404] In some embodiments, the feedback information may indicate that the first device did not successfully receive the first data.

[0405] In some embodiments, the feedback information may indicate that the first device fails to decode the received first data.

[0406] In some embodiments, the feedback information indicates that the first data is successfully received and the sending of the first data is stopped.

[0407] In some embodiments, the feedback information will carry an identifier of the relevant terminal.

[0408] In some embodiments, the feedback information is received within a timing range of a first timer.

[0409] In some embodiments, the feedback information may further include:

[0410] The control information for the next data transmission of the corresponding terminal may include resource information and / or power information.

[0411] This resource information may indicate the resource location for the next data transmission by the corresponding terminal. For example, this resource information may include, but is not limited to, a channel number and / or an opportunity number. The channel number indicates the channel or subchannel for the next data transmission. The opportunity number may indicate the transmission opportunity used for the next data transmission.

[0412] The power information may indicate the transmit power of the corresponding terminal when sending data next time. For example, the power information may also include, but is not limited to, a power ramp value and a path loss value. For example, the path loss value may be used by the first terminal to determine the actual power value for sending data next time.

[0413] Exemplarily, the current feedback information is feedback information for the nth data transmission of the first terminal. The feedback information indicates that the nth data transmission is successful and carries control information for the first terminal to transmit data for the (n+1)th time.

[0414] For example, the random access request carries a data buffer report, which may indicate the amount of data to be sent by the first terminal. In this way, the first device can determine whether the first terminal still has data to report based on the amount of data already received from the first terminal. In this way, after successfully receiving a data transmission from the first terminal, the first device determines, based on the data buffer report, whether it is necessary to indicate control parameters for the next data transmission to the first terminal. If data transmission has already been completed, the feedback information does not need to carry control information for the next data transmission by the corresponding terminal. If data transmission has not yet been completed, the feedback information may carry control information for the next data transmission by the corresponding terminal.

[0415] In summary, in the embodiments of the present disclosure, whether the nth data transmission of the terminal is successful can be determined based on whether feedback information is received or the information content of the feedback information.

[0416] In some embodiments, S3107 may correspond to S2107 of the embodiment corresponding to FIG. 2A and S2203 of the embodiment corresponding to FIG. 2B .

[0417] [Corrected 27.06.2025 according to Rule 91] S3108: When the n-th transmission of the first data fails, the power is increased according to the power increase step value, and the increased transmission power is used as the transmission power for the n+1-th transmission of the first data.

[0418] In some embodiments, n is a positive integer.

[0419] In some embodiments, the feedback information carries an identifier of the corresponding device.

[0420] In some embodiments, the first terminal starts the first timer after the first terminal fails to send the first data for the nth time.

[0421] In some embodiments, when the first timer times out, reception of feedback information is stopped, and it is determined that the nth transmission of the first data has failed.

[0422] In some embodiments, when the first terminal receives feedback information within the timing range of the first timer, it determines whether the corresponding feedback information is feedback information for the first terminal according to an identifier carried in the feedback information.

[0423] In some embodiments, whether the feedback information carries the first identifier of the first terminal is used to determine whether the feedback information is feedback information for the first terminal.

[0424] For example, if the feedback information carries the first identifier of the first terminal, it is determined that the feedback information is feedback information for the first terminal.

[0425] For another example, if the feedback information does not carry the first identifier of the first terminal, it is determined that the feedback information is not feedback information for the first terminal.

[0426] In some embodiments, when the feedback information indicates that the first data fails to be sent, fails to be decoded, or local information indicating failure is received, it is determined that the nth sending of the first data fails.

[0427] In some embodiments, the power ramp-up for data retransmission is performed according to the power ramp-up step value in the downlink control message.

[0428] In some embodiments, the power ramp for data retransmission is performed according to a power ramp step value in a downlink control message that is used for both random access request and data transmission.

[0429] In some embodiments, the power ramp for data retransmission is performed according to a power ramp step value dedicated to the power ramp in the downlink control message.

[0430] In some embodiments, n is less than or equal to N; N is the maximum number of times a data is resent.

[0431] In some embodiments, when the nth transmission of the first data fails, the transmission power for the (n+1)th transmission of the first data is determined according to the power climbing step value until the maximum transmission power value is reached.

[0432] In some embodiments, the maximum transmit power value may be the maximum transmit power value supported by the first terminal and / or the maximum transmit power value specified by a power control parameter. In some embodiments, the timing duration of the first timer may be indicated by a timer carried in the first message. For example, the first timer duration may be the time window for receiving feedback information.

[0433] In other embodiments, the timing duration of the first timer may be agreed upon by a protocol.

[0434] In some embodiments, optional implementations of S3108 may refer to any optional implementation of S2108 and / or S2104 of the corresponding embodiment of FIG. 2A .

[0435] In some embodiments, steps S3102 to S3105 may be optional. For example, the first terminal may directly select the second resource on the first resource based on the first message to transmit the first data, thereby omitting the handshake operation with the first device through the random access request and / or random access response.

[0436] In some embodiments, steps S3107 and S3108 may be optional. For example, if the first device does not send feedback information, these steps may be omitted. In other embodiments, the first device sends feedback information only if it fails to decode the first data. In this case, the feedback information is a negative acknowledgement (NACK). If the nth data transmission is successful, step S3108 may also be omitted.

[0437] It is worth noting that: when the first data is successfully sent for the nth time, if the first terminal still has data to be sent, steps such as S3106 can be repeated.

[0438] As shown in FIG4 , an embodiment of the present disclosure provides a data transmission method, which is performed by a first device and includes:

[0439] S4101: Send the first message.

[0440] In some embodiments, the first device includes a network device and / or a second terminal.

[0441] In some embodiments, optional implementations of S4101 may refer to S2101 of the embodiment corresponding to FIG. 2A and / or refer to S2201 of the embodiment corresponding to FIG. 2B .

[0442] S4102: Receive a random access request.

[0443] In some embodiments, the random access request is received on a third resource.

[0444] In some embodiments, a random access request by the first terminal is received on a third resource.

[0445] In some embodiments, optional implementations of S4102 may refer to S2101 of the embodiment corresponding to FIG. 2A and / or refer to S2201 of the embodiment corresponding to FIG. 2B .

[0446] In some embodiments, the random access request may include at least a target random access preamble selected by the first terminal from among candidate random access preambles.

[0447] In some embodiments, the random access request may further include at least one of the following:

[0448] First value;

[0449] A first random number, which may be generated based on the first value or may not be generated based on the first value;

[0450] The device identifier of the first terminal.

[0451] In some embodiments, the random access request carrying the above content can facilitate the subsequent first device to select the first terminal allowed to access.

[0452] Exemplarily, the first value may be a fixed value or a constant value. For example, different first terminals have different first values, or different types of first terminals have first values.

[0453] Exemplarily, the first random number may be a random number generated using a random access algorithm before each random access request by the first terminal.

[0454] In some embodiments, the first random number may be generated based on the first value. For example, a second value is first generated based on a random algorithm, and then the second value that satisfies a specified size relationship with the first value is set as the first random number.

[0455] In some embodiments, the first value may be Q, and the first random number may be a random number generated based on Q. For example, the first random number may be 0 to 2 Q Any number between -1.

[0456] The device identification of the first terminal may include, but is not limited to, an International Mobile Equipment Identity (IMEI), an International Mobile Subscriber Identification Number (IMSI), and / or the tail number of the device identification of the first device.

[0457] S4103: Send a random access response.

[0458] In some embodiments, optional implementations of S4103 may refer to S2103 in the corresponding embodiment of FIG. 2A .

[0459] S4104: Receive first data.

[0460] In some embodiments, first data is received on a first resource.

[0461] In some embodiments, the first data is received on the first resource if a random access response is sent, and otherwise the first data may not be received on the first resource.

[0462] In some embodiments, the first data is received on a second resource within the first resource. Exemplarily, the first data is received on the second resource based on the second resource indicated by the random access response. Alternatively, the first data is received on the second resource based on device information of the first terminal and / or a criterion for the first terminal to select the second resource from the first resource.

[0463] In some embodiments, an identifier of the sending terminal is received simultaneously with the receiving of the first data.

[0464] S4105: Send feedback information.

[0465] In some embodiments, optional implementations of S4105 may refer to S2105 of the embodiment corresponding to FIG. 2A and / or S2203 of the embodiment corresponding to FIG. 2B .

[0466] In some embodiments, the feedback information may indicate whether the first device has successfully received the first data.

[0467] In some embodiments, the feedback information may indicate that the first device did not successfully receive the first data.

[0468] In some embodiments, the feedback information may indicate that the first device fails to decode the received first data.

[0469] In some embodiments, the feedback information indicates that the first data is successfully received and the sending of the first data is stopped.

[0470] In some embodiments, the feedback information will carry an identifier of the relevant terminal.

[0471] In some embodiments, the feedback information is received within a timing range of a first timer.

[0472] In some embodiments, the feedback information may further include:

[0473] The control information for the next data transmission of the corresponding terminal may include resource information and / or power information.

[0474] This resource information may indicate the resource location for the next data transmission by the corresponding terminal. For example, this resource information may include, but is not limited to, a channel number and / or an opportunity number. The channel number indicates the channel or subchannel for the next data transmission. The opportunity number may indicate the transmission opportunity used for the next data transmission.

[0475] The power information may indicate the transmit power of the corresponding terminal when sending data next time. For example, the power information may also include, but is not limited to, a power ramp value and a path loss value. For example, the path loss value may be used by the first terminal to determine the actual power value for sending data next time.

[0476] Exemplarily, the current feedback information is feedback information for the nth data transmission of the first terminal. The feedback information indicates that the nth data transmission is successful and carries control information for the first terminal to transmit data for the (n+1)th time.

[0477] For example, the random access request carries a data buffer report, which may indicate the amount of data to be sent by the first terminal. In this way, the first device can determine whether the first terminal still has data to report based on the amount of data already received from the first terminal. In this way, after successfully receiving a data transmission from the first terminal, the first device determines, based on the data buffer report, whether it is necessary to indicate control parameters for the next data transmission to the first terminal. If data transmission has already been completed, the feedback information does not need to carry control information for the next data transmission by the corresponding terminal. If data transmission has not yet been completed, the feedback information may carry control information for the next data transmission by the corresponding terminal.

[0478] In some embodiments, steps S4102 to S4103 may be optional. For example, the first terminal may directly select the second resource on the first resource based on the first message to transmit the first data, thereby omitting the handshake operation with the first device through the random access request and / or random access response.

[0479] In some embodiments, S4105 may be an optional step. In some embodiments, the first device may not send feedback information to the first terminal, that is, there is no data sending feedback mechanism. For example, if the first device fails to successfully receive the first data, it may request retransmission, but no feedback is sent. If the first terminal does not receive the retransmission request, it can be considered that the first data has been sent successfully. In a Radio Frequency Identification (RFID) system, for a terminal that can generate a signal and autonomously send an uplink (for example, an ambient device or a tag), when there is data to be actively reported, how to select appropriate resources to avoid resource selection conflicts during data transmission, and use appropriate UL power for data transmission to avoid uplink interference.

[0480] Method 1:

[0481] First, the tag receives a downlink (DL) message from the network, similar to a system broadcast. DL messages are used to configure basic cell information, such as the cell ID, cell name, random access resources, and / or supported device types (Type A devices, Type B devices, and Type C devices).

[0482] The system broadcast information may also include power control parameters for the random access process performed by the type C device. For example, the power control parameters may include but are not limited to initial power and / or power ramp-up step size.

[0483] The terminal determines the channel information and / or transmission timing for initiating random access based on the time domain location, frequency domain location, and / or indication content information received in the system broadcast information. The channel information can be an absolute channel number. For example, a 5M system bandwidth in a cell can be divided into 20 subchannels, with subchannel codes 0 to 19 from low to high frequency.

[0484] The transmission opportunity is located on a specific sub-channel. For example, the actual time domain position and / or relative offset relative to the reception of system broadcast information, as well as the interval between two adjacent transmission opportunities, determine the actual position of the transmission opportunity.

[0485] As shown in Figure 5A, the broadcast system information also includes a set of reserved subchannels and / or transmission opportunities. During the initial resource selection process, the device cannot select any of the reserved transmission subchannels and / or transmission opportunities. The device can only select transmission subchannels and / or transmission opportunities outside of the reserved resources.

[0486] The Ambient IoT system predefines or configures the sequence set for sending the first message during random access by system broadcast information. Each known sequence in the sequence set has a corresponding ID.

[0487] The random access process is as follows:

[0488] Step a: The device of type C randomly selects a transmission opportunity in the non-reserved transmission sub-channel and / or transmission opportunity, transmits one of the randomly selected known sequence sets, and records its sequence ID. The index ID of the transmission opportunity in this period, the transmission opportunity index ID can be determined in the order of frequency domain first and then time domain. The device of type C can use the sequence ID, transmission opportunity index ID, and a new ID generated by the transmission opportunity index ID and sequence ID to confirm whether the random access response is its own response. The initial power can be based on the initial target power configured on the network side, or the initial target power and path loss (PL).

[0489] Step b: After sending the random access request, the terminal starts a timer. If the timer times out without receiving a response message (i.e., random access response), the initial power is equal to the sum of the previous initial power and the power climbing step, and so on.

[0490] Step c: Receive a random access response from the network. The random access response includes the transmission channel ID and / or transmission opportunity ID specified by the network for transmitting data, as well as the sequence ID, index ID, or a new ID generated by combining the sequence ID and index ID determined in step a). The response message may also include an integer value, Q.

[0491] Step d: If Q is carried, the device of type C generates a random number (RN) 16 according to Q. For example, the value range of the random number can be 0 to 2 Q -1. The data reported by a Type C device also includes at least one of the following information:

[0492] The ID generated by the combination of device ID, data, RN16, sequence ID, transmission opportunity index ID, and sequence ID and transmission opportunity index ID.

[0493] Optionally, the type C device may also carry Quality of Service (QoS) requirements and / or transmission service priorities. For example, if a service requires short latency or high priority, the network side will allocate the nearest transmission opportunity.

[0494] Optionally, a Type C device may also carry a Buffer Size Report (BSR). For example, the BSR may include one bit that indicates whether the terminal has data to send. If this bit indicates that the terminal has data to send, the network side may indicate in the acknowledgment character (ACK) the transmission subchannel ID and / or transmission opportunity index to be used for the next data transmission. It may also indicate whether the newly allocated dedicated time-frequency resource is for the current cycle, the next cycle, or the next few cycles.

[0495] If the timer is started after the data is sent, if the timer times out without receiving a random access response, the process returns to step a) and starts over.

[0496] If the Type C device receives an ACK, it indicates that the transmission is successful, otherwise it continues to transmit.

[0497] The ACK contains RN16, which is used to specify to which Type C device the response is given.

[0498] Specifically, as shown in FIG5B , it may include:

[0499] Ambient IoT devices use a known random access;

[0500] The reader (i.e., the aforementioned first device) sends a random access response, which may indicate a channel ID, a time domain position, a sequence ID, and Q. The channel ID may be the channel identifier for the first data transmission. The sequence ID may be the identifier of the random access preamble sequence used in the random access request. The Ambient IoT device reports data. The reported data includes: data, tag ID, RN16, and sequence ID. The tag ID is an identifier for the Ambient IoT device.

[0501] The reader sends an ACK, and the data sent along with the ACK also includes the tag ID and / or RN16, for example.

[0502] Method 2:

[0503] First, the tag receives a DL message similar to a system broadcast sent by the network side. The DL message may include but is not limited to a broadcast message.

[0504] The DL message may include cell information. For example, the cell information may include, but is not limited to, a cell identifier and / or a cell name. The DL message may also include resource information of random access resources, the device types supported by the random access resources (device A, B, C), etc. The random access resources herein may be any of the first resources and / or third resources described above.

[0505] The system broadcast information may also include: power control parameters, initial power and / or power ramp-up step size, etc., for the type C device to perform a random access process.

[0506] The terminal determines the channel information and / or transmission opportunity information for initiating random access according to the time domain position and / or frequency domain position received by the system broadcast information.

[0507] The channel information may be an absolute channel number. For example, if the system bandwidth of a cell is 5 Mbps, the system bandwidth may be divided into 20 sub-channels, and the sub-channels are coded from 0 to 19 from low frequency to high frequency.

[0508] The transmission opportunity is the actual position of the transmission opportunity on a certain subchannel, which is determined by the actual time domain position relative to the reception of the system broadcast information, the relative offset, and the interval between two adjacent transmission opportunities.

[0509] The system broadcast information also includes a set of reserved subchannels and / or transmission opportunities. Devices cannot select any of these reserved transmission subchannels and / or transmission opportunities during their initial resource selection process. They can only select transmission subchannels and / or transmission opportunities outside of the reserved resources.

[0510] Type C devices randomly select a transmission subchannel and / or transmission opportunity to send data.

[0511] The transmitted data also includes an ID (the ID may be the aforementioned first identifier), which may be a device ID or a previous network configuration Q, and RN16 confirmed by interaction between the network side or other temporary identifiers assigned by the network side.

[0512] Optionally, the type C device may further carry buffer size report (BSR) information, for example, 1 bit for indicating whether there is any data to be sent. If it indicates that there is data to be sent, the network side may indicate in the ACK confirmation the transmission subchannel ID and / or transmission opportunity index to be used for the next data transmission. It may also indicate whether the newly allocated dedicated time-frequency resource is the transmission opportunity of the current cycle, the next cycle, or the next few cycles.

[0513] After sending data, the terminal starts a timer. If the timer times out without receiving an ACK, it is considered a NACK and the terminal increases the transmit power to continue sending data. For example, the initial transmit power is the initial power target value configured on the network side, or the sum of the initial power target value configured on the network side and the path loss PL.

[0514] Increase the transmit power to the previous transmit power and the power increase step size.

[0515] If the device of type C receives an ACK that includes the device ID, the device of type C confirms that it is its own response, otherwise it continues to select resources to send uplink data.

[0516] In an RFID system, for terminals that generate their own signals and send uplink signals autonomously (Type C devices), when they have data to actively report, how to select appropriate resources to avoid resource selection conflicts during data transmission, and how to use appropriate UL power for data transmission to avoid uplink interference.

[0517] Specifically, as shown in FIG5C , it may include:

[0518] Ambient IoT device data reporting includes data and tag ID.

[0519] The reader (i.e., the aforementioned first device) sends a NACK;

[0520] The Ambient IoT device reports data again.

[0521] The reader sends an ACK, and the data sent along with the ACK also includes the tag ID and / or RN16, for example.

[0522] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0523] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0524] The embodiments of the present disclosure also provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device or a core network device) in any of the above methods.

[0525] It should be understood that the division of the various units or modules in the above devices is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above devices, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0526] In the embodiments of the present disclosure, a processor is a circuit with signal processing capabilities. In one implementation, the processor may be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of a hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration file to implement the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DLP), or a similar hardware circuit. Unit, DPU) etc.

[0527] As shown in FIG6A , an embodiment of the present disclosure provides a first terminal, wherein the first terminal may be an ambient IoT device. Specifically, the first terminal may include:

[0528] The sending module 6101 is configured to send first data to a first device on a second resource selected from the first resource; the first device includes a network device and / or a second terminal; the second resource is one or more of the first resources;

[0529] The first resource is a predefined resource; the first device is a network device or a second terminal; and the second terminal is an intermediate node for information transmission between the first terminal and the network device.

[0530] In some embodiments, the first terminal further includes:

[0531] A receiving module is configured to receive a first message sent by a first device; the first message includes a first configuration of a first resource. In some embodiments, the first terminal further includes:

[0532] The receiving module is configured to receive feedback information sent by the first device; the feedback information is used by the first device to determine whether the first device has successfully received the first data.

[0533] In some embodiments, the first terminal further includes a processing module. Exemplarily, the processing module can be used by the first terminal to execute steps related to information processing in any one of the data transmission methods.

[0534] In some embodiments, the sending module and / or the receiving module may correspond to a network interface and / or a transceiver antenna of the first terminal.

[0535] In some embodiments, the sending module may be used by the first terminal to execute steps related to information sending in any data transmission method.

[0536] In some embodiments, the receiving module may be used by the first terminal to execute steps related to information transmission in any data transmission method.

[0537] In some embodiments, the first message further includes at least one of the following:

[0538] Power control parameter; the power control parameter is used to control the transmission power of the first terminal;

[0539] The timer information is used to determine a time window for the first terminal to receive feedback information.

[0540] In some embodiments, the power control parameter includes at least one of the following:

[0541] Initial power value;

[0542] Power ramp-up step length.

[0543] In some embodiments, the processing module is configured to determine the transmission power for the first transmission of the first data based on the initial power value; and / or, when the nth transmission of the first data fails, determine the transmission power for the n+1th transmission of the first data based on the power climbing step value; n is a positive integer.

[0544] In some embodiments, the first configuration includes at least one of the following:

[0545] Cell information, used to indicate the cell to which the first resource belongs;

[0546] Frequency domain information, used to indicate the frequency domain position of the first resource;

[0547] The time domain information is used to indicate the time domain position of the first resource.

[0548] In some embodiments, the frequency domain information includes channel information, where the channel information is used to indicate a channel or subchannel where the first resource is located; and / or,

[0549] The time domain information includes timing information; the timing information includes: a timing index and / or an offset of a transmission timing corresponding to the first resource relative to a reference time domain position.

[0550] In some embodiments, the sending module is further configured to send a first identifier to the first device on the second resource; the first identifier is used to indicate the first terminal;

[0551] The processing module is configured to determine whether the first device successfully receives the first data according to the feedback information including the first identifier.

[0552] In some embodiments, the processing module is configured to perform at least one of the following:

[0553] The feedback information includes the first identifier, confirming that the first device successfully receives the first data;

[0554] The feedback information does not include the first identifier, and it is determined that the first device has failed to successfully receive the first data.

[0555] In some embodiments, the first identifier includes at least one of the following:

[0556] a device identifier of the first terminal;

[0557] First value;

[0558] A first random number generated according to the first value;

[0559] a second random number specified by the network device;

[0560] A second identifier generated according to the first identifier; the first identifier includes a first resource identifier of the second resource and / or a first sequence identifier of the random access sequence;

[0561] A third identifier is generated based on the first identifier and the first value.

[0562] In some embodiments, the receiving module is configured to perform at least one of the following:

[0563] After sending the first data, starting a first timer according to the timer information;

[0564] Feedback information sent by the first device is received within a timing range of the first timer.

[0565] In some embodiments, the first message further includes a second configuration of the third resource; the sending module is configured to, before sending the first data to the first device on the second resource selected from the first resource, select a fourth resource from the third resource according to the second configuration to send a random access request; the fourth resource is one or more of the third resources;

[0566] The receiving module is further configured to receive a random access response sent by the first device;

[0567] The processing module is configured to select a second resource from the first resource according to the random access response.

[0568] In some embodiments, the processing module is configured to start a second timer after sending the random access request;

[0569] The receiving module is configured to receive a random access response within a timing range of a second timer.

[0570] In some embodiments, the sending module is configured to receive a random access response to the first terminal within a second timer, and send the first data to the first device on a second resource selected from the first resource.

[0571] In some embodiments, the method further comprises:

[0572] It is determined whether a random access response for the first terminal is received according to information content carried in the random access response received within a timing range of the second timer.

[0573] In some embodiments, the processing module is further configured to perform at least one of the following:

[0574] Receiving a random access response including a first resource identifier within a timing range of the second timer, determining that a random access response for the first terminal is received; the first resource identifier is used to indicate a fourth resource;

[0575] Receiving a random access response including a first sequence identifier within a timing range of the second timer, determining that a random access response for the first terminal has been received; the first sequence identifier is used to indicate a random access sequence carried in the random access request;

[0576] A random access response including a fourth identifier is received within the second timing range, and it is determined that a random access response for the first terminal is received; the fourth identifier is an identifier generated based on the first resource identifier and / or the first sequence identifier.

[0577] In some embodiments, the sending module is configured to, if no random access response is received for the first terminal within the timing range of the second timer, resend the random access request to the first device using the increased transmission power until a random access response is received for the first terminal, the power climbs to the maximum transmission power of the random access request, or the number of repetitions of the random access request reaches the maximum number.

[0578] In some embodiments, the random access response to the first terminal further includes at least one of the following:

[0579] A second resource identifier, used by the first terminal to select a second resource;

[0580] The first value,

[0581] A first random number is generated based on the first value to generate a second random number, and the second random number is specified by the network device.

[0582] In some embodiments, the first resources include reserved resources within a random access window.

[0583] In some embodiments, the first message comprises a system information block (SIB).

[0584] In some embodiments, each SIB is used to configure the first resource within a random access window.

[0585] FIG6B is a first device provided by an embodiment of the present disclosure, wherein the first device includes:

[0586] The receiving module 6201 is configured to receive first data sent by a first terminal on a first resource; the first resource is a predefined resource; the first device is a network device or a second terminal; and the second terminal is an intermediate node for information transmission between the first terminal and the network device.

[0587] In some embodiments, the first device may include a network device and / or a second terminal.

[0588] In some embodiments, the first device may further include a processing module and a sending module.

[0589] In some embodiments, the processing module may be configured to execute any steps related to information processing in the data transmission method performed by the first device.

[0590] In some embodiments, the sending module and / or the receiving module may correspond to a network interface and / or a transceiver antenna of the first device.

[0591] In some embodiments, the sending module is configured to send a first message to the first terminal; the first message includes a first configuration of the first resource.

[0592] In some embodiments, the first device further includes: a sending module configured to send feedback information to the first terminal according to a reception status of the first data; the feedback information is used by the first device to determine whether the first device has successfully received the first data.

[0593] In some embodiments, the first message further includes at least one of the following:

[0594] Power control parameter; the power control parameter is used to control the transmission power of the first terminal;

[0595] The timer information is used to determine a time window for the first terminal to receive feedback information.

[0596] In some embodiments, the power control parameter includes at least one of the following:

[0597] Initial power value;

[0598] Power ramp-up step length.

[0599] In some embodiments, the processing module is further configured to perform at least one of the following:

[0600] determining, according to the initial power value, a transmit power for firstly sending the first data; and / or,

[0601] When the nth transmission of the first data fails, the transmission power for the (n+1)th transmission of the first data is determined according to the power ramp-up step value; n is a positive integer.

[0602] In some embodiments, the first configuration includes at least one of the following:

[0603] Cell information, used to indicate the cell to which the first resource belongs;

[0604] Frequency domain information, used to indicate the frequency domain position of the first resource;

[0605] The time domain information is used to indicate the time domain position of the first resource.

[0606] In some embodiments, the frequency domain information includes channel information, where the channel information is used to indicate a channel or subchannel where the first resource is located; and / or,

[0607] The time domain information includes timing information; the timing information includes: a timing index and / or an offset of a transmission timing corresponding to the first resource relative to a reference time domain position.

[0608] In some embodiments, the receiving module is further configured to receive a first identifier sent by a first terminal on a first resource; the first identifier is used to indicate the first terminal;

[0609] The sending module is further configured to determine whether the feedback information includes the first identifier according to a reception status of the first data; and send the feedback information to the first terminal.

[0610] In some embodiments, determining whether the feedback information includes the first identifier based on a reception status of the first data includes at least one of the following:

[0611] The first data is successfully received, and it is determined that the feedback information includes the first identifier;

[0612] The first data reception fails, and it is determined that the feedback information does not include the first identifier.

[0613] In some embodiments, the first identifier includes at least one of the following:

[0614] a device identifier of the first terminal;

[0615] First value;

[0616] A first random number generated according to the first value;

[0617] a second random number specified by the network device;

[0618] a second identifier generated according to the first identifier; the first identifier includes a first resource identifier of a second resource and / or a sequence identifier of a random access sequence; the second resource is a resource in the first resource used by the first device to receive the first data;

[0619] A third identifier is generated based on the first identifier and the first value.

[0620] In some embodiments, the processing module is further configured to start a first timer according to the timer information;

[0621] The sending module is further configured to send feedback information to the first terminal according to the reception status of the first data within the timing range of the first timer.

[0622] In some embodiments, the first message further includes a second configuration of the third resource; the processing module is further configured to select a fourth resource from the third resource according to the second configuration to send the random access request;

[0623] The sending module is further configured to send a random access response to the first terminal;

[0624] The receiving module is further configured to receive first data sent by the first terminal on the first resource after sending the random access response.

[0625] In some embodiments, the random access response is used by the first terminal to select a second resource from the first resource for sending the first data; the second resource is used by the first device to receive the first data.

[0626] In some embodiments, the random access response to the first terminal includes at least one of the following:

[0627] A first resource identifier, used to indicate a fourth resource;

[0628] A second resource identifier, used by the first terminal to select a second resource;

[0629] A first value, the first value is used to generate an identifier that identifies the first device;

[0630] Second random number;

[0631] A first sequence identifier, used to indicate an identifier of a random access sequence corresponding to the random access request;

[0632] The second sequence identifier is used as an identifier of a random access sequence for generating an identifier by the first device.

[0633] In some embodiments, the receiving module is further configured to receive a random access request resent by the first terminal after power is ramped up.

[0634] In some embodiments, the first resources include reserved resources within a random access window.

[0635] In some embodiments, the first message comprises a system information block (SIB).

[0636] In some embodiments, each SIB is used to configure the first resource within a random access window.

[0637] An embodiment of the present disclosure further provides a communication device, which may include: one or more processors; wherein the processor is used to call instructions to enable the communication device to execute the downlink control information data transmission method that can be implemented in any of the aforementioned embodiments.

[0638] 7A and / or 7B , the communication device 8100 further includes one or more memories 8102 for storing instructions. Alternatively, all or part of the memories 8102 may be located outside the communication device 8100.

[0639] The communication device may be the aforementioned terminal and network device. In some embodiments, the network device may be a master node and / or an auxiliary node.

[0640] In some embodiments, the communication device 8100 further includes one or more transceivers 8103. When the communication device 8100 includes one or more transceivers 8103, the communication steps such as sending and receiving in the above method are performed by the transceiver 8103, and the other steps are performed by the processor 8101.

[0641] In some embodiments, a transceiver may include a receiver and a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0642] Optionally, the communication device 8100 further includes one or more interface circuits 8104, which are connected to the memory 8102. The interface circuits 8104 can be used to receive signals from the memory 8102 or other devices, and can be used to send signals to the memory 8102 or other devices. For example, the interface circuits 8104 can read instructions stored in the memory 8102 and send the instructions to the processor 8101.

[0643] The communication device 8100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG. 7A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: (1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0644] 7B is a schematic diagram of the structure of a chip 8200 provided in an embodiment of the present disclosure. If the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 8200 shown in FIG7B , but the present disclosure is not limited thereto.

[0645] The chip 8200 includes one or more processors 8201, and the processor 8201 is used to call instructions to enable the chip 8200 to execute any of the above downlink control information data transmission methods.

[0646] In some embodiments, chip 8200 further includes one or more interface circuits 8202, which are connected to memory 8203. Interface circuit 8202 can be used to receive signals from memory 8203 or other devices, and can be used to send signals to memory 8203 or other devices. For example, interface circuit 8202 can read instructions stored in memory 8203 and send the instructions to processor 8201. Optionally, the terms interface circuit, interface, transceiver pin, and transceiver are interchangeable.

[0647] In some embodiments, the chip 8200 further includes one or more memories 8203 for storing instructions. Alternatively, all or part of the memories 8203 may be located outside the chip 8200.

[0648] The present disclosure also provides a storage medium having instructions stored thereon, which, when executed on the communication device 8100, causes the communication device 8100 to execute any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but may also be a transient storage medium.

[0649] The present disclosure further provides a program product, which, when executed by the communication device 8100, enables the communication device 8100 to perform any of the above methods for transmitting downlink control information data. Optionally, the program product is a computer program product.

[0650] The present disclosure also provides a computer program, which, when executed on a computer, enables the computer to execute any of the above methods for transmitting downlink control information data.

[0651] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered as exemplary only, with the true scope and spirit of the present invention being indicated by the following claims.

[0652] It should be understood that the embodiments of the present disclosure are not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the embodiments of the present disclosure is limited only by the appended claims.

Claims

1. A data transmission method, wherein: The method is executed by a first terminal, where the first terminal is an ambient IoT device; the method includes: Sending first data to a first device on a second resource selected from the first resource; the second resource is one or more of the first resources; the first resource is a predefined resource; the first device is a network device or a second terminal; the second terminal is an intermediate node for information transmission between the first terminal and the network device.

2. The method according to claim 1, wherein The method further comprises: Receive feedback information sent by the first device; the feedback information is used by the first terminal to determine whether the first device has successfully received the first data.

3. The method according to claim 1 or 2, wherein: Before sending the first data to the first device through the second resource selected from the first resource, the method further includes: A first message sent by the first device is received; the first message includes a first configuration of a first resource; the first device includes the network device and / or the second terminal.

4. The method according to claim 3, wherein: The first message further includes at least one of the following: A power control parameter; the power control parameter is used to control the transmit power of the first terminal; Timer information is used to determine a time window for the first terminal to receive the feedback information.

5. The method according to claim 4, wherein The power control parameter includes at least one of the following: Initial power value; Power ramp-up step length.

6. The method according to claim 5, wherein: The method further comprises: determining, according to the initial power value, a transmit power for firstly sending the first data; and / or, When the first data fails to be sent for the nth time, the transmission power for sending the first data for the (n+1)th time is determined according to the power climbing step value; wherein n is a positive integer.

7. The method according to any one of claims 2 to 6, wherein: The first configuration includes at least one of the following: Cell information, used to indicate the cell to which the first resource belongs; Frequency domain information, used to indicate the frequency domain position of the first resource; Time domain information is used to indicate the time domain position of the first resource.

8. The method according to claim 7, wherein: The frequency domain information includes channel information, where the channel information is used to indicate a channel or subchannel where the first resource is located; and / or, The time domain information includes timing information; the timing information includes: a timing index and / or an offset of a transmission timing corresponding to the first resource relative to a reference time domain position.

9. The method according to any one of claims 1 to 8, wherein: The method further comprises: Sending a first identifier to the first device on the second resource; the first identifier is used to indicate the first terminal; Determine whether the first device successfully receives the first data based on the feedback information including the first identifier.

10. The method according to claim 9, wherein: The determining, based on the feedback information including the first identifier, whether the first device successfully receives the first data comprises at least one of the following: The feedback information includes the first identifier, determining that the first device successfully receives the first data; The feedback information does not include the first identifier, and it is determined that the first device has not successfully received the first data.

11. The method according to claim 10, wherein: The first identifier includes at least one of the following: a device identifier of the first terminal; First value; a first random number generated according to the first value; a second random number specified by the network device; a second identifier generated according to the first identifier; the first identifier including the first resource identifier of the second resource and / or the first sequence identifier of the random access sequence; A third identifier is generated based on the first identifier and the first value.

12. The method according to claim 3, wherein: The receiving feedback information sent by the first device includes: After sending the first data, starting a first timer according to the timer information; The feedback information sent by the first device is received within a timing range of the first timer.

13. The method according to any one of claims 2 to 8, wherein: The first message further includes a second configuration of a third resource; and the method further includes: Before sending the first data to the first device on the second resource selected from the first resource, select a fourth resource from the third resource according to the second configuration to send a random access request; the fourth resource is one or more of the third resources; receiving a random access response sent by the first device; The second resource is selected from the first resources according to the random access response.

14. The method according to claim 13, wherein The receiving a random access response sent by the first device includes: Starting a second timer after sending the random access request; The random access response is received within a timing range of the second timer.

15. The method according to claim 14, wherein The sending the first data to the first device via the second resource selected from the first resource includes: The random access response to the first terminal is received within the second timer, and first data is sent to the first device on a second resource selected from the first resource.

16. The method according to claim 15, wherein The method further comprises: Determine whether a random access response to the first terminal is received according to information content carried in a random access response received within a timing range of the second timer.

17. The method according to claim 16, wherein The determining, based on information content carried in a random access response received within a timing range of the second timer, whether a random access response for the first terminal is received includes at least one of the following: Receiving a random access response including a first resource identifier within a timing range of the second timer, determining that a random access response for the first terminal has been received; the first resource identifier is used to indicate the fourth resource; Receiving a random access response including a first sequence identifier within a timing range of the second timer, determining that a random access response for the first terminal has been received; wherein the first sequence identifier is used to indicate a random access sequence carried in the random access request; A random access response including a fourth identifier is received within the timing range of the second timing, and it is determined that a random access response for the first terminal is received; the fourth identifier is an identifier generated based on the first resource identifier and / or the first sequence identifier.

18. The method according to any one of claims 13 to 17, wherein: The method further comprises: If no random access response is received for the first terminal within the timing range of the second timer, the random access request is resent to the first device using the increased transmit power until a random access response is received for the first terminal, the power is increased to the maximum transmit power of the random access request, or the number of repetitions of the random access request reaches a maximum number.

19. The method according to claim 18, wherein The random access response for the first terminal further includes at least one of the following: A second resource identifier, used by the first terminal to select the second resource; The first value, A first random number, where the first random number generates a second random number based on the first value, and the second random number is specified by a network device.

20. The method according to any one of claims 1 to 19, wherein The first resources include reserved resources located within a random access window.

21. The method according to any one of claims 2 to 8, wherein: The first message includes a system information block SIB.

22. The method according to claim 21, wherein Each of the SIBs is used to configure the first resource within a random access window.

23. A data transmission method, wherein: The method is performed by a first device, where the first device includes a network device and / or a second terminal; the method includes: First data sent by a first terminal is received on a first resource; the first resource is a predefined resource; the first device is a network device or a second terminal; and the second terminal is an intermediate node for information transmission between the first terminal and the network device.

24. The method according to claim 23, wherein Before receiving the first data sent by the first terminal on the first resource, the method further includes: A first message is sent to the first terminal; the first message includes a first configuration of a first resource.

25. The method according to claim 24, wherein The first message further includes at least one of the following: A power control parameter; the power control parameter is used to control the transmit power of the first terminal; Timer information is used to determine a time window for the first terminal to receive the feedback information.

26. The method according to claim 24, wherein The power control parameter includes at least one of the following: Initial power value; Power ramp-up step length.

27. The method according to claim 25, wherein The method further comprises: determining, according to the initial power value, a transmit power for firstly sending the first data; and / or, When the first data fails to be sent for the nth time, the transmission power for sending the first data for the (n+1)th time is determined according to the power climbing step value; wherein n is a positive integer.

28. The method according to any one of claims 24 to 27, wherein The first configuration includes at least one of the following: Cell information, used to indicate the cell to which the first resource belongs; Frequency domain information, used to indicate the frequency domain position of the first resource; Time domain information is used to indicate the time domain position of the first resource.

29. The method according to claim 28, wherein The frequency domain information includes channel information, where the channel information is used to indicate a channel or subchannel where the first resource is located; and / or, The time domain information includes timing information; the timing information includes: a timing index and / or an offset of a transmission timing corresponding to the first resource relative to a reference time domain position.

30. The method according to any one of claims 23 to 29, wherein The method further comprises: A first identifier sent by the first terminal is received on the first resource; the first identifier is used to indicate the first terminal.

31. The method according to any one of claims 23 to 30, wherein The method further comprises: Feedback information is sent to the first terminal according to a reception status of the first data; the feedback information is used by the first terminal to determine whether the first device has successfully received the first data.

32. The method according to claim 31, wherein The sending feedback information to the first terminal according to a reception status of the first data includes: determining, according to a reception status of the first data, whether the feedback information includes a first identifier of the first terminal; Sending the feedback information to the first terminal.

33. The method according to claim 32, wherein The determining, according to the reception status of the first data, whether the feedback information includes the first identifier of the first terminal includes at least one of the following: The first data is successfully received, and it is determined that the feedback information includes the first identifier; The first data reception fails, and it is determined that the feedback information does not include the first identifier.

34. The method according to claim 33, wherein The first identifier includes at least one of the following: a device identifier of the first terminal; First value; a first random number generated according to the first value; a second random number specified by the network device; a second identifier generated according to the first identifier; the first identifier includes a first resource identifier of a second resource and / or a sequence identifier of a random access sequence; the second resource is a resource in the first resource used by the first device to receive the first data; A third identifier is generated based on the first identifier and the first value.

35. The method according to any one of claims 31 to 34, wherein The method further comprises: starting a first timer according to the timer information; The sending feedback information to the first terminal according to a reception status of the first data includes: The feedback information is sent to the first terminal according to a reception status of the first data within a timing range of the first timer.

36. The method according to any one of claims 24 to 29, wherein The first message further includes a second configuration of a third resource; and the method further includes: selecting a fourth resource from the third resource according to the second configuration to send a random access request; a random access response sent to the first terminal; The receiving, on the first resource, first data sent by the first terminal includes: After sending the random access response, the first data sent by the first terminal is received on the first resource.

37. The method according to claim 36, wherein The random access response is used by the first terminal to select a second resource from the first resource for sending the first data; the second resource is used by the first device to receive the first data.

38. The method according to claim 36 or 37, wherein The random access response for the first terminal includes at least one of the following: A first resource identifier, used to indicate the fourth resource; A second resource identifier, used by the first terminal to select the second resource; a first value, where the first value is used to generate an identifier that identifies the first device; Second random number; A first sequence identifier, used to indicate an identifier of a random access sequence corresponding to the random access request; The second sequence identifier is used as an identifier of a random access sequence for generating an identifier by the first device.

39. The method according to any one of claims 36 to 38, wherein The method further comprises: receiving a random access request resent by the first terminal after the power of the first terminal is increased.

40. The method according to any one of claims 23 to 39, wherein The first resources include reserved resources located within a random access window.

41. The method according to any one of claims 24 to 29, wherein The first message includes a system information block SIB.

42. The method according to claim 41, wherein Each of the SIBs is used to configure the first resource within a random access window.

43. A first terminal, wherein: The first terminal is an ambient IoT device; The first terminal includes: a sending module, configured to send first data to the first device on a second resource selected from the first resource; The second resource is one or more of the first resources; the first resource is a predefined resource; the first device is a network device or a second terminal; and the second terminal is an intermediate node for information transmission between the first terminal and the network device.

44. A first device, wherein: The first device includes a network device and / or a second terminal; the first device includes: a receiving module, configured to receive first data sent by a first terminal on a first resource; The first resource is a predefined resource; the first device is a network device or a second terminal; and the second terminal is an intermediate node for information transmission between the first terminal and the network device.

45. A communication device, wherein: The communication device comprises: one or more processors; The processor is configured to call instructions to enable the communication device to execute the data transmission method according to any one of claims 1 to 22 and / or claims 23 to 42.

46. A storage medium, wherein The storage medium stores instructions, and when the instructions are executed on the communication device, the communication device executes the data transmission method according to any one of claims 1 to 22 and / or claims 23 to 42.

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