Detection method and apparatus for d2r transmissions, and network-side device and internet-of-things device

Abstract

The present disclosure relates to the technical field of wireless communications, and relates to a detection method and apparatus for D2R transmissions, and a network-side device, an Internet-of-Things device and a computer-readable storage medium. The detection method applied to a network-side device comprises: sending time-domain control information to an Internet-of-Things device, wherein the time-domain control information comprises a time-domain detection window; receiving a D2R transmission sent by the Internet-of-Things device on the basis of the time-domain detection window; and detecting the D2R transmission within the time-domain detection window.

Description

Detection method and device for D2R transmission, network side equipment and internet of things equipment

[0001] Cross-reference to related applications

[0002] The present disclosure is based on and claims priority to the CN application No. 202411251813.8 filed on September 6, 2024, the disclosure of which is hereby incorporated by reference in its entirety into the present disclosure. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of wireless communication, in particular to a detection method and device for D2R transmission, network side equipment, internet of things equipment and computer readable storage medium. BACKGROUND

[0004] In recent years, IoT (Internet of Things) has received a lot of attention, and more internet of things devices or terminals are trying to access the network, bringing convenience to life, but also challenging the network access capability and the energy consumption and cost of internet of things devices or terminals. The Ministry of Industry and Information Technology pointed out that in the future, internet of things terminals will show a billion-level explosive growth. If all IoT devices or terminals are equipped with batteries and periodically maintained and maintained, it is impossible, which will result in high maintenance cost and serious environmental problems, which is an unacceptable development direction for the Internet of Things.

[0005] In view of this, 3GPP (3rd Generation Partnership Project) proposes the concept of A-IoT (Ambient IoT), which does not rely on batteries, but obtains energy from the environment or radio frequency signals to perform waveform modulation and transmission. In the internet of things device or internet of things terminal or internet of things device terminal (Device), there will be R2D (reader to device) transmission and D2R (device to reader) transmission, wherein the D2R transmission is transmitted by the internet of things device and received by the network side, representing the downlink of the network side equipment transmitting to the internet of things device, and the D2R will be performed by backscattering, and the R2D transmission is transmitted by the network side and received by the internet of things device, representing the uplink of the internet of things device transmitting to the network side equipment. SUMMARY

[0006] According to a first aspect of the present disclosure, a method for detecting device-to-reader (D2R) transmission is provided, applied to a network-side device, comprising: sending time domain control information to an Internet of Things (IoT) device, the time domain control information comprising a time domain detection window; receiving a D2R transmission sent by the IoT device based on the time domain detection window; and detecting the D2R transmission within the time domain detection window.

[0007] According to a second aspect of the present disclosure, a method for detecting device-to-reader (D2R) transmission is provided, applied to an Internet of Things (IoT) device, comprising: receiving time domain control information from a network-side device, the time domain control information comprising a time domain detection window; and sending a D2R transmission based on the time domain detection window, so that the network-side device detects the D2R transmission within the time domain detection window.

[0008] According to a third aspect of the present disclosure, a network-side device is provided, configured to perform the method for detecting applied to a network-side device in any of the embodiments of the present disclosure.

[0009] According to a fourth aspect of the present disclosure, an Internet of Things (IoT) device is provided, configured to perform the method for detecting applied to an IoT device in any of the embodiments of the present disclosure.

[0010] According to a fifth aspect of the present disclosure, an electronic device is provided, comprising: a memory; and a processor coupled to the memory, the processor being configured to perform the method for detecting according to any of the embodiments of the present disclosure based on instructions stored in the memory.

[0011] According to a sixth aspect of the present disclosure, a computer-readable storage medium is provided, having stored thereon computer program instructions, which when executed by a processor, implement the method for detecting according to any of the embodiments of the present disclosure.

[0012] According to a seventh aspect of the present disclosure, a computer program product is provided, comprising a computer program, which when executed by a processor, implements the method for detecting according to any of the embodiments of the present disclosure.

[0013] According to an eighth aspect of the present disclosure, a computer program is provided, comprising computer instructions, wherein the computer instructions, when executed by a processor, implement the method according to any of the embodiments of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings, which form a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0015] The present disclosure can be more clearly understood with reference to the following detailed description when considered in conjunction with the following drawings, in which:

[0016] FIG. 1 is a flow diagram illustrating a detection method for D2R transmission according to some embodiments of the present disclosure;

[0017] FIG. 2 is a configuration diagram illustrating a time-domain detection window according to some embodiments of the present disclosure;

[0018] FIG. 3 is a configuration diagram illustrating a time-domain detection window according to some other embodiments of the present disclosure;

[0019] FIG. 4 is a configuration diagram illustrating a time-domain detection window according to yet some other embodiments of the present disclosure;

[0020] FIG. 5 is a configuration diagram illustrating a time-domain detection window according to yet some other embodiments of the present disclosure;

[0021] FIG. 6 is a configuration diagram illustrating a time-domain detection window according to yet some other embodiments of the present disclosure;

[0022] FIG. 7 is a configuration diagram illustrating a time-domain detection window according to yet some other embodiments of the present disclosure;

[0023] FIG. 8 is a flow diagram illustrating a detection method for D2R transmission according to some embodiments of the present disclosure;

[0024] FIG. 9 is a block diagram illustrating a detection system for D2R transmission according to some embodiments of the present disclosure;

[0025] FIG. 10 is a block diagram illustrating an electronic device according to some embodiments of the present disclosure;

[0026] FIG. 11 is a block diagram illustrating a computer system for implementing some embodiments of the present disclosure. DETAILED DESCRIPTION

[0027] Various exemplary embodiments of the present disclosure will now be described in detail herein with reference to the drawings. It should be noted that the relative arrangement, numerical expressions, and numerical values of components and steps set forth in these embodiments are not limiting to the scope of the present disclosure unless specifically stated otherwise.

[0028] It should be noted that the sizes of the various parts shown in the drawings are not necessarily drawn to scale to facilitate description.

[0029] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way limiting to the scope of the present disclosure and its applications or uses.

[0030] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the description unless otherwise stated in detail.

[0031] In all of the examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Thus, other examples of the example embodiments can have different values.

[0032] It should be noted that like reference numerals and letters refer to like items throughout the attached drawings, and once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0033] In the conventional NR (New Radio) system, there is uplink synchronization between the network side device and the UE (User Equipment), which can ensure that each UE accessing the network side device can arrive at the network side device at the starting position of the first OFDM (Orthogonal Frequency Division Multiplexing) symbol of the first slot of the base station, thereby facilitating the detection and scheduling of the network side device. Since the network side and the UE side use unified time granularity definitions of slots and OFDM symbols, such synchronization can ensure that the network side device and the UE have a consistent understanding of the occupied and scheduled resources. For A-IoT devices, due to poor timing capability, time is not accurate, even if TA (Timing Advance) is used to achieve uplink synchronization, this TA can only be considered as a range value rather than an accurate value, which leads to the position of the first OFDM symbol of the first slot of the network side not being the starting position, but possibly in the middle of the first symbol. Therefore, if the network side device schedules the device to transmit a resource occupying 4 OFDM symbols, the network side device must reserve at least 5 OFDM symbol resources, otherwise the time inaccuracy will not only affect the device's own uplink transmission, but also cause cross-slot or symbol interference to the next transmission, so the conventional NR system cannot be used to receive D2R transmission.

[0034] In simple terms, the CW (Continuous Wave) carrier is injected into the device, and the device modulates and transmits it back to the carrier with the corresponding modulated information. However, due to the inaccurate time of the device, it may not be able to set an accurate timing advance, so the D2R transmission received by the device is most likely located in the middle of an OFDM symbol or inside the symbol.

[0035] Based on this, the present disclosure proposes the concept of a time domain detection window, and based on this concept, the detection of D2R can avoid the situation where the D2R transmission is in the middle of an OFDM symbol, which leads to the inability to determine or schedule the required detection time domain resources.

[0036] It should be noted that the detection window involved in the present disclosure can be described as a receiving window, and the detection action involved in the present disclosure can be described as a receiving action.

[0037] FIG. 1 is a flowchart illustrating a detection method for D2R transmission according to some embodiments of the present disclosure.

[0038] As shown in FIG. 1, the detection method for D2R transmission applied to a network side device includes: step S110, sending time domain control information to an Internet of Things device, the time domain control information including a time domain detection window; step S120, receiving D2R transmission sent by the Internet of Things device based on the time domain detection window; and step S130, detecting the D2R transmission within the time domain detection window. The time domain detection window is a continuous time granularity time domain resource or a time interval.

[0039] The network side device of the present disclosure includes, for example but not limited to, a base station, and can also include a UE, a relay, a network node, a network element, a RIS (Reconfigurable Intelligent Surface), an IAB (Integrated Access and Backhaul), etc. The Internet of Things device of the present disclosure includes, for example but not limited to, an environmental Internet of Things device.

[0040] The time domain detection window can be predefined, preconfigured, or network configured or indicated. The number of time domain detection windows is preconfigured for the network side device or predefined by the protocol or determined according to the length of the time domain detection window configured for the network side device.

[0041] For example, the D2R transmission includes at least one of a PDRCH (Physical Device to Reader Channel), D2R control information, a synchronization signal, and a reference signal. The PDRCH is a transmission channel on the D2R link, used for transmitting uplink information. Similarly, the PRDCH is a transmission channel on the R2D link, used for transmitting downlink information.

[0042] The Internet of Things device (Device) of the present disclosure can also be referred to as an Internet of Things terminal or an Internet of Things device terminal.

[0043] In the above embodiments, the detection of D2R transmission is realized through the time domain detection window, which can improve the success rate of receiving D2R transmission and guarantee the success of receiving D2R transmission of the Internet of Things device, thereby establishing a guarantee mechanism for D2R transmission. The time domain detection window is greater than the actual occupied time of one D2R transmission, so as to guarantee that different D2R time offsets can be received within the time domain detection window.

[0044] In some embodiments, the time domain detection window comprises at least one first time domain detection window and / or at least one second time domain detection window, the first time domain detection window belonging to a subset of the second time domain detection window. The first time domain detection window is located within the time interval of the second time domain detection window.

[0045] For example, the essence of the second time domain detection window is that the network side actually defines a time domain resource or a time detection interval reserved to prevent time offset, which is used to represent that this time interval is used for detection of D2R transmission, and no other information is received or transmitted. It is a relatively coarse-grained time domain resource reservation, which can be network side default or preconfigured. The first time domain detection window is the position and length of the D2R transmission signal actually found by the network side device in the detection process, that is, the time interval actually detected by the network side D2R transmission signal needs to occupy. Usually, the network side defines the time granularity at the minimum symbol level, so the second time domain detection window is represented as the number of minimum required OFDM symbols occupied by D2R transmission.

[0046] In some embodiments, in the case where the first time domain detection window and the second time domain detection window exist at the same time, each second time domain detection window comprises one or more first time domain detection windows. In the case where there are multiple second time domain detection windows, the multiple second time domain detection windows correspond to the D2R transmission of multiple Internet of Things devices.

[0047] For example, only one second time domain detection window can be defined, which may have one or more first time domain detection windows inside.

[0048] When there are multiple first time domain detection windows inside, each first time domain detection window can come from the same D2R transmission or from different D2R transmissions.

[0049] For another example, multiple second time domain detection windows can also be defined, which may have one or more first time domain detection windows inside. In the case where there are multiple second time domain detection windows, each second time domain detection window corresponds to the D2R transmission of an Internet of Things device, and the first time domain detection window inside each second time domain detection window can be one or more (preferably, there is one first time domain detection window inside each second time domain detection window). There can be no correspondence between the second time domain detection window and the D2R transmission, and multiple second time domain detection windows can correspond to multiple different D2R transmissions. The length of each second time domain detection window can be the same or different.

[0050] In some embodiments, in the case where any second time domain detection window comprises multiple first time domain detection windows, the length of the any second time domain detection window is greater than or equal to the sum of the lengths of the multiple first time domain detection windows; and / or there is or is not a time interval between the multiple first time domain detection windows in the any second time domain detection window.

[0051] The present disclosure can also set rules within the window.

[0052] For example, when there is only one first time-domain detection window within the second time-domain detection window, the length of the second time-domain detection window is longer than that of the first time-domain detection window.

[0053] For example, the second time-domain detection window can be set to have a length of L time granules, and the first time-domain detection window can be set to have a length of l time granules. In this case, the starting position of the first time-domain detection window is between the 0th time granule and the (L-l-l)th time granule. Alternatively, to ensure a certain interval between the first time-domain detection windows, the minimum time-domain interval between two first time-domain detection windows can be set to T, and the starting position of the first time-domain detection window is between the T / 2th time granule and the (L-l-T / 2-l)th time granule. Alternatively, for the part within the second time-domain detection window but outside the first time-domain detection window, such as the part within the minimum time-domain interval (also referred to as the minimum time interval) T, no D2R reception or detection is performed.

[0054] For another example, when there are multiple first time-domain detection windows within the second time-domain detection window, the length of the second time-domain detection window is longer than the sum of the lengths of the multiple first time-domain detection windows. In one case, the length of each first time-domain detection window is the same, the length of the second time-domain detection window can be set to L time granules, and the length of the first time-domain detection window can be set to l time granules. There are X first time-domain detection windows within the second time-domain detection window, which are respectively set to the 0th, 1st, …, xth, …, X-1st first time-domain detection windows.

[0055] Based on this, the starting position of the first time-domain detection window can be between the L / X*xth time granule and the L / X*(x+1)-l-lth time granule. Alternatively, to ensure a certain interval between the first time-domain detection windows and ensure the detection effect, the minimum time-domain interval between two first time-domain detection windows can be set. For example, the minimum time-domain interval can be set to T, and in this case, the starting position of each first time-domain detection window is between the L / X*x-T / 2th time granule and the L / X*(x+1)-T / 2-l-lth time granule. Alternatively, for the part within the second time-domain detection window but outside the first time-domain detection window, such as the part within the minimum time interval T, no D2R reception or detection is performed.

[0056] For example, when the second time domain detection window contains multiple first time domain detection windows, the length of the second time domain detection window is longer than the sum of the lengths of the multiple first time domain detection windows. In one case, the length of each first time domain detection window is different, and the length of the second time domain detection window can be set as L time granules, and there are X first time domain detection windows in the second time domain detection window, which are respectively set as 0, 1, …, x, …, X-1 first time domain detection windows, and the lengths of the first time domain detection windows are respectively a, b, c, d, … time granules.

[0057] Based on this, the starting position of the first time domain detection window is between the L / X*x time domain granule and the L / X*(x+1)-M-1 time domain granule, where M can take one of the values a, b, c, …, which depends on the serial number of the window. Alternatively, to ensure a certain interval between the first time domain detection windows and to ensure the detection effect, there can be a minimum time domain interval between two first time domain detection windows. The minimum time domain interval can be set as T, and the starting position of each first detection window is between the L / X*x-T / 2 and L / X*(x+1)-T / 2-M-1, where M can take one of the values a, b, c, …, which depends on the serial number of the window. Alternatively, the part located in the second time domain detection window but outside the first time domain detection window, such as the part within the minimum time interval T, does not perform D2R reception or detection.

[0058] In some embodiments, no NR or other non-Internet of Things or non-environmental Internet of Things signal is received in the second time domain detection window, and only the reception and detection of the Internet of Things or environmental Internet of Things D2R transmission are performed.

[0059] For example, the Internet of Things device determines the first time domain detection window to determine that the D2R transmission is shorter than the length threshold, and if the D2R transmission is too long, the segmented transmission processing is performed through the first detection window. The network side device configures the second time domain detection window to provide a sliding window for the D2R transmission of the Internet of Things device, and the D2R transmission will be detected within the second time domain detection window, and will not be detected beyond the second time domain detection window.

[0060] The configuration method of the first time domain detection window in some embodiments of the present disclosure will be described in detail below.

[0061] In some embodiments, the configuration of the first time domain detection window includes at least one of the length of the first time domain detection window, the starting position of the first time domain detection window, and the ending position of the first time domain detection window. For example, in the case where the length of the D2R transmission to be sent by the Internet of Things device is greater than the length of the first time domain detection window, the Internet of Things device sends the D2R transmission within the first time domain detection window.

[0062] The length of the first time domain detection window may, for example, be determined based on a configuration or indication of the network-side device, or based on a maximum length or maximum duration of a D2R transmission that the IoT device supports to transmit, or based on a length or duration of a D2R transmission that the IoT device transmits.

[0063] The length of the first time domain detection window may, for example, be determined based on a configuration or indication of the network-side device, or based on a maximum length or maximum duration of a D2R transmission that the IoT device supports to transmit, or based on a length or duration of a D2R transmission that the IoT device transmits.

[0064] In some embodiments, in the case that the length of the first time domain detection window is determined based on a configuration or indication of the network-side device, at least one of the following steps may be performed.

[0065] The length of the first time domain detection window is configured or indicated according to a pre-defined length of the first time domain detection window according to a protocol or pre-configured by the network-side device. For example, the pre-defined length of the first time domain detection window according to a protocol or pre-configured by the network-side device has one or more values, which are determined according to a subcarrier spacing or a D2R transmission bandwidth.

[0066] The length of the first time domain detection window is configured or indicated according to a length of a D2R transmission of one or more IoT devices configured or indicated by the network device.

[0067] The length of the first time domain detection window is configured or indicated according to a capability or a device category of the IoT device. For example, the capability of the IoT device includes at least one of a maximum transmission length of the IoT device, a length of the first time domain detection window supported by the IoT device, and a transmission length supported by the IoT device. For another example, configuring or indicating the length of the first time domain detection window according to a capability or a device category of the IoT device includes configuring or indicating the length of the first time domain detection window corresponding to the device category of the IoT device according to a correspondence between device categories and lengths of the first time domain detection window pre-defined according to a protocol or pre-configured by the network-side device.

[0068] In some embodiments, configuring or indicating the length of the first time domain detection window according to the capability or device category from the IoT device comprises: configuring or indicating at least one of the maximum transmission length of the IoT device, the length of the first time domain detection window supported by the IoT device, and the transmission length supported by the IoT device, and the length of the D2R transmission configured by the network side device, as the minimum value, as the length of the first time domain detection window.

[0069] In the case where the length of the first time domain detection window is configured or indicated by the network side, it can be configured or indicated according to a predefined or preconfigured value, one of multiple values is selected for configuration or indication, it can also be configured or indicated according to the length of the target D2R transmission configured or indicated by the network side on the IoT device side, and it can also be configured or indicated according to the capability or category reported by the IoT device.

[0070] Taking the length of the first time domain detection window configured or indicated according to the capability or category reported by the IoT device as an example, the IoT device can report its own transmission length capability that it can support, and the network side configures or indicates according to the capability in at least one of the following ways: the IoT device reports its own maximum transmission length capability, and the network side configures or indicates according to the capability; the IoT device reports its own capability of supporting the first time domain detection window, and the network side determines whether to configure the first time domain detection window according to the capability (there can be multiple); the IoT device reports its own supported transmission length, and the network side configures according to the reported transmission length (there can be multiple).

[0071] Taking the length of the first time domain detection window configured or indicated according to the capability or category reported by the IoT device as an example, the IoT device can also report its own category, and the network side configures or indicates according to the category of the IoT device: for example, predefined or preconfigured time domain detection window lengths for different categories of IoT devices, and configured or indicated according to the category reported by the IoT device; for another example, multiple time domain detection window lengths are predefined or preconfigured, and corresponding configurations are made according to the category of the IoT device.

[0072] For example, in the case where there is network side configuration, the length of the time domain detection window configured by the network side is the final time domain detection window length; in the case where there is no network side configuration, at least one of the transmission capability, the maximum transmission capability, and the detection window length reported by the IoT device is compared with the length of the D2R transmission configured by the network side, and the minimum value is taken as the final detection window length value.

[0073] The start position of the first time domain detection window may be, for example, the first time granularity of the D2R transmission (to be transmitted by the Internet of Things device), or the first time granularity after the last time granularity of the previous time domain detection window, or the time granularity after the last time granularity of the previous time domain detection window by a preset number of time granularities, or the first time granularity of the start of the midamble. The preset number of time granularities is, for example, X, where X is predefined, preconfigured, or network configured or indicated.

[0074] For example, the first time granularity of the D2R transmission may be the first granularity of the preamble, or the first granularity of the D2R transmission after the preamble, or the first granularity of the midamble, or a granularity of the D2R transmission after the midamble.

[0075] The preamble, also known as the preamble synchronization code, is used to obtain the position of synchronization in asynchronous transmission, and is generally located at the head of the transmitted signal.

[0076] The midamble, also known as the midamble synchronization code, is used to correct or align the synchronization in the middle of asynchronous transmission, and is generally located in the middle of the transmitted signal.

[0077] The end position of the first time domain detection window may be, for example, the last time granularity of the D2R transmission (to be transmitted by the Internet of Things device), or the last time granularity of the length of the first time domain detection window, or the last time granularity before the start of the midamble, or the time granularity before the start of the midamble by a preset number of time granularities. For example, the preset number of time granularities is, for example, X, where X is predefined, preconfigured, or network configured or indicated.

[0078] For example, the last time granularity of the D2R transmission may be the last granularity of the D2R transmission, or the last granularity of the postamble, or the last granularity before the preamble.

[0079] The postamble, also known as the postamble synchronization code, is used to obtain the end position in asynchronous transmission, and is generally located at the tail of the transmitted signal.

[0080] The configuration of the second time domain detection window in some embodiments of the present disclosure will be described in detail below.

[0081] In some embodiments, the configuration of the second time domain detection window comprises at least one of a length of the second time domain detection window, a starting position of the second time domain detection window, and an ending position of the second time domain detection window. For example, the physical network device sends a D2R transmission based on the time domain detection window, and if the length of the D2R transmission to be sent is greater than the length of the second time domain detection window, the D2R transmission within the second time domain detection window can also be sent, that is, the IoT device can cut part of the D2R transmission according to the situation.

[0082] For example, the length of the second time domain detection window is determined based on the configuration or indication of the network side device, or based on the theoretical length or the theoretical maximum length of all D2R transmissions or the sum of the theoretical length and the theoretical maximum length, or based on the longest duration of the D2R transmissions of multiple IoT devices or the sum of the durations of the D2R transmissions of multiple IoT devices.

[0083] The length of the second time domain detection window can also be referred to as the duration of the second time domain detection window. The duration of the second time domain detection window can determine the length of the second detection window by a parameter configured or indicated by the network, which is X time granularity; it can also depend on the theoretical duration length or the theoretical maximum duration of all D2R transmissions or the sum of the durations of all D2R transmissions; it can also depend on the duration length or duration of the current D2R transmission. If there are D2R transmissions of multiple IoT devices, it depends on the longest duration of the D2R transmissions of all IoT devices or the sum of the durations of all D2R transmissions.

[0084] In some embodiments, in the case where the length of the second time domain detection window is determined based on the configuration or indication of the network side device, at least one of the following steps can also be performed.

[0085] The length of the second time domain detection window is configured or indicated according to the length of the second time domain detection window predefined by the protocol or preconfigured by the network side device. For example, the length of the second time domain detection window predefined by the protocol or preconfigured by the network side device has one or more values, and the values are determined according to the subcarrier spacing or the D2R transmission bandwidth.

[0086] The length of the second time domain detection window is configured or indicated according to the length of the D2R transmission of one or more IoT devices configured or indicated by the network device.

[0087] The length of the second time domain detection window is configured or indicated according to the capability or device category from the IoT device. For example, the capability of the IoT device includes at least one of a maximum transmission length of the IoT device, a length of the second time domain detection window supported by the IoT device, and a transmission length supported by the IoT device. For example, configuring or indicating the length of the first time domain detection window according to the capability or device category from the IoT device includes configuring or indicating the length of the second time domain detection window corresponding to the device category of the IoT device according to a correspondence relationship between device categories and lengths of the second time domain detection window predefined by a protocol or preconfigured by the network side device.

[0088] In the above embodiments, in the case where the length of the second time domain detection window is configured or indicated by the network side, the length can be configured or indicated according to a predefined or preconfigured value, or one of multiple values is selected for configuration or indication; the length can also be configured or indicated according to the length of a target D2R transmission on the IoT device side configured or indicated by the network, where the target D2R can be a D2R transmission of one IoT device or the length of the longest D2R transmission in D2R transmissions of multiple IoT devices, i.e., the maximum length; the length can also be configured or indicated according to the capability or category reported by the IoT device, where the target IoT device can be one IoT device or multiple IoT devices.

[0089] In the case where the length is configured or indicated according to the capability or category reported by the IoT device, the IoT device can report, for example, a transmission length capability that it can support, and the network side configures or indicates the length according to the capability. For example, the IoT device can report its maximum transmission length capability, and the network side configures or indicates the length according to the capability. If multiple IoT devices upload maximum transmission capabilities, the length is configured according to the maximum capability value. The IoT device can also report, for example, a transmission length that it supports, and the network side configures (multiple) the length according to the reported transmission length.

[0090] In the case where the length is configured or indicated according to the capability or category reported by the IoT device, the IoT device can report, for example, its category, and the network side configures or indicates the length according to the category of the IoT device. For example, lengths of time domain detection windows under different IoT device categories are predefined or preconfigured, and the length is configured or indicated according to the category reported by the IoT device. For another example, multiple lengths of time domain detection windows are predefined or preconfigured, and the length is configured according to the category of the IoT device.

[0091] For example, the start position of the second time domain detection window is the first OFDM symbol in a slot or a subframe or a frame, or the first slot in a subframe or a frame, or the first time granularity of the D2R transmission, or the first OFDM symbol in the slot occupied by the start time granularity of the D2R transmission, or the start position of the OFDM symbol occupied by the start time granularity of the D2R transmission, or the OFDM symbol or slot at a preset position after the end position of the previous second time domain detection window, or the first time granularity of the first D2R transmission after the end position of the previous second time domain detection window.

[0092] Specifically, the start position of the second time domain detection window can be the first OFDM symbol in a slot or a subframe or a frame, which can be the start position of the OFDM symbol, for example, the first sampling point; or the first slot in a subframe or a frame, which can be the start position of the slot, for example, the first sampling point; or the first time granularity of the D2R transmission; or the first OFDM symbol in the slot occupied by the start time granularity of the D2R transmission, which can be the start position of the OFDM symbol, for example, the first sampling point; or the start position of the OFDM symbol occupied by the start time granularity of the D2R transmission, which can be the start position of the OFDM symbol, for example, the first sampling point; or the first OFDM symbol after the end position of the previous second detection window, which can be the start position of the OFDM symbol, for example, the first sampling point; or the first slot after the end position of the previous second detection window, which can be the start position of the slot, for example, the first sampling point; or X OFDM symbols or slots after the end position of the previous second detection window, which can be the start position of the OFDM symbol or slot, for example, the first sampling point, where X can be predefined, preconfigured, network configured or indicated; or the first time granularity of the first D2R transmission after the end position of the previous second detection window, where the D2R transmission can be transmitted by the target IoT device or by another IoT device.

[0093] For example, the end position of the second time domain detection window is the last time granularity of the D2R transmission or another D2R transmission, or the end of the OFDM symbol or the end of the slot where the last time granularity of the D2R transmission or another D2R transmission is located, or the last time granularity of the length of the second time domain detection window.

[0094] Specifically, the end position of the second time domain detection window can be the last time domain granularity of the D2R transmission; can also be the end of the OFDM symbol in which the last time domain granularity of the D2R transmission is located, which can be the last sampling point of the OFDM symbol; can also be the end of the slot in which the last time domain granularity of the D2R transmission is located, which can be the last sampling point of the slot; can also be the last time domain granularity of other D2R transmission; can also be the end of the OFDM symbol in which the last time domain granularity of other D2R transmission is located, which can be the last sampling point of the OFDM symbol; can also be the end of the slot in which the last time domain granularity of other D2R transmission is located, which can be the last sampling point of the slot; or can also be the last time domain granularity of the time domain detection window length.

[0095] Similar to the first time domain detection window, for the second time domain detection window, in the case of network side configuration, the network side configured time domain detection window length is the final time domain detection window length; in the case of no network side configuration, a default value is predefined or preconfigured as the final detection window length value, which can be associated with the capability of the Internet of Things device, the type of the Internet of Things device or the length of the D2R transmission, for example, the default value can be compared with the longest length or the sum of lengths of all D2R transmissions, and the smaller value is configured.

[0096] The detection of the D2R transmission in the time domain detection window in some embodiments of the present disclosure will be described in detail below.

[0097] In the case where the time domain detection window includes the first time domain detection window and the second time domain detection window, the D2R transmission located in the first time domain detection window can be detected in the second time domain detection window.

[0098] In some embodiments, the detection of the D2R transmission located in the first time domain detection window in the second time domain detection window can be realized by the following way.

[0099] In the case where there are multiple D2R transmissions in the second time domain detection window, and the number of the multiple D2R transmissions is more than the number of the first time domain detection window or the total length of the multiple D2R transmissions is greater than the length of the second time detection window, the D2R transmission located in the first time domain detection window is detected in the second time domain detection window in the order from high to low according to the priority of the multiple D2R transmissions or in the order from early to late according to the time of the multiple D2R transmissions.

[0100] For example, after the sorting according to the priority of the plurality of D2R transmissions from high to low or the time of the plurality of D2R transmissions from early to late, the D2R transmission located outside the second time domain detection window or with a length exceeding the second time domain detection window is detected in the next second time domain detection window after the second time domain detection window or is discarded. For example, in this case, the D2R transmission with a low priority can be discarded according to the priority of the D2R transmission, or the D2R transmission arrived later can be discarded according to the order of the D2R transmission, or all the D2R transmissions outside the current second time domain detection window can be discarded.

[0101] The configuration of the actual window of the second time domain detection window in some embodiments of the present disclosure will be described below.

[0102] In some embodiments, whether to start the actual window of the second time domain detection window can be determined according to at least one of the capability information of whether to support the actual window of the second time domain detection window, the configuration information, and the device type of the Internet of Things device; and / or, in the case of determining to start the actual window of the second time domain detection window, the actual window of the second time domain detection window can also be set, wherein the start position of the actual window is the same as the start position of the second time domain detection window or the start position of the actual window is the first time granularity after the end of the event affected in the second time domain detection window, and the end position of the actual window is the end position of the second time domain detection window or the time granularity before the start time granularity of the event affected in the second time domain detection window.

[0103] For example, in the case of no actual window of the second time domain detection window, the second time domain detection window is stopped in response to the event affecting the second time domain detection window; and / or, in the case of the capability information indicating that the Internet of Things device supports the actual window of the second time domain detection window, and / or the configuration information configuring or indicating to start the actual window of the second time domain detection window, and / or the device type of the Internet of Things device satisfying the rule of starting the actual window of the second time domain detection window, it is determined to start the actual window of the second time domain detection window.

[0104] In some embodiments, in the second time domain detection window, an event occurs that causes the second time domain detection window to be broken, for example, the time domain resource in this paragraph is indicated by DCI (Downlink Control Information) or other instructions for other purposes, then at least one of the following operations can be performed.

[0105] Operation 1, configure that the second time domain detection window in this paragraph cannot be used.

[0106] Operation 2, set up an actual window of the second time domain detection window. The start position of the actual window is the same as the start position of the second time domain detection window, or the start position of the actual window is inside the second time domain detection window, and is the first time granularity after the event ends, which can be the start position of the time granularity, such as the first sampling point. The end position of the actual window is the end position of the second time domain detection window, or the end position of the actual window is inside the second time domain detection window, and is the time granularity before the start time granularity of the second time domain detection window affected by the event, which can be the end of the time granularity, such as the last sampling point. The time granularity can be the last time granularity of the OFDM symbol, the time slot, the subframe, the frame, or the D2R transmission. For example, the actual window cannot cross the second time domain detection window.

[0107] The event that causes the second time domain detection window to be broken can include at least one of the following, for example: some uplink time slots are indicated as downlink time slots, or some downlink time slots are indicated as uplink time slots (depending on whether the time slot receiving the Internet of Things signal is uplink or downlink), some uplink or downlink time slots are indicated as unavailable, the interference level measured by a certain segment of continuous time domain resources in the second time domain detection window exceeds a threshold value (which can be pre-configured or pre-defined).

[0108] The number of actual windows of the second time domain detection window can be pre-configured, pre-defined, configured or indicated by the network side, or calculated and obtained according to the length of the first time domain detection window and the length of the second time domain detection window configured by the network side. In the case of multiple actual windows of the second time domain detection window, the time interval of the multiple actual windows can be pre-configured, pre-defined, configured or indicated by the network side.

[0109] For example, the actual window of the second time domain detection window is pre-configured, pre-defined, or configured or indicated by the network side. According to the related information pre-configured, pre-defined, or configured or indicated by the network side, it can be determined whether to start the actual window of the second time domain detection window. For another example, the network side can configure whether to support the actual window of the second time domain detection window in the case that the Internet of Things device reports to the network side whether it supports the capability of the actual window of the second time domain detection window. For another example, the Internet of Things device can also report its type, and the network side device can configure whether to support the actual window of the second time domain detection window according to the reported type and the default rule.

[0110] In some embodiments, the actual window of the second time domain detection window can be configured to be re-opened. For example, the re-opening of the actual window can be pre-configured, pre-defined, network side configured or indicated, for determining whether the network side opens a new actual window after experiencing an event. For another example, the IoT device can report whether it supports re-opening a new actual window after experiencing an event, and the network side configures the corresponding configuration. For another example, the IoT device can report its category, and the network side configures whether to support re-opening the actual window of the second time domain detection window after experiencing an event according to the reported category and the default rule.

[0111] In any of the above embodiments, the time granularity includes at least one of a bit, a transport block, an OOK (On-Off Keying) chip, a microsecond, a sampling point, a PDRCH (Physical Layer Device-to-Reader Transmission Channel) chip, a PDRCH symbol, a PDRCH slot, a PDRCH sampling point, a D2R chip, a D2R symbol, a D2R slot, and a D2R sampling point.

[0112] The configuration manner of the time domain detection window in some embodiments of the present disclosure will be described below in combination with FIGS. 2-7.

[0113] FIG. 2 is a configuration schematic diagram of a time domain detection window according to some embodiments of the present disclosure.

[0114] FIG. 3 is a configuration schematic diagram of a time domain detection window according to some other embodiments of the present disclosure.

[0115] As shown in FIGS. 2 and 3, the time domain detection window includes one or more first time domain detection windows, and each first time domain detection window can include a D2R transmission after the entire D2R transmission is divided (FIG. 2) or the entire D2R transmission (FIG. 3). The multiple D2R transmissions in FIG. 2 are divided by intermediate codes, and the D2R transmissions between different first time domain detection windows in FIG. 3 are divided by intermediate codes. The configuration of the time domain detection window in the manner of FIGS. 2 and 3 can ensure that the D2R transmission can be successfully received and detected by the network side in the corresponding second time domain detection window.

[0116] The length of the first time domain detection window in FIGS. 2 and 3 can be configured by the higher layer network side. For example, the IoT device can determine the manner of transmitting the D2R transmission of the first time domain detection window.

[0117] As shown in FIG. 2, the starting position of the first time domain detection window is the first time granularity of the D2R transmission to be transmitted, and the ending position is the last time granularity of the D2R transmission to be transmitted. T in FIGS. 2 and 3 represents a time granularity.

[0118] As shown in FIG. 3, the starting position of each first time domain detection window is the first time granularity of the D2R transmission to be sent, and the ending position is the first time granularity before the midamble.

[0119] FIG. 4 is a configuration diagram of a time domain detection window according to yet some embodiments of the present disclosure.

[0120] FIG. 5 is a configuration diagram of a time domain detection window according to yet some embodiments of the present disclosure.

[0121] The time domain detection window includes at least one second time domain detection window. Taking FIGs. 4 and 5 as examples, the time domain detection window includes one second time domain detection window.

[0122] The second time domain detection window can be a time domain resource including the entire D2R transmission, or a time domain resource including one D2R transmission. That is, in the entire D2R transmission, the D2R transmission can not be sent at one time, which can involve an in-process reply process, resulting in sending a D2R transmission after a period of time, or involve the fragmentation of the D2R transmission, resulting in a large D2R transmission being divided into multiple small D2R transmissions for sending. Therefore, one second time domain detection window can be composed of one D2R transmission, or multiple D2R transmissions, or one or more parts of one D2R transmission.

[0123] The second time domain detection window is specially used for receiving the D2R transmission of the Internet of Things device, and the part outside the second time domain detection window does not perform detection of the D2R transmission, so as to ensure that the D2R transmission can be successfully detected by the network side. The second time domain detection window can also not be in the form of a window, but only be indicated as a continuous time domain resource or time domain granularity.

[0124] The length of the second time domain detection window in FIGs. 4 and 5 can be configured by the higher layer network side, for example, can be configured by the network side.

[0125] FIG. 6 is a configuration diagram of a time domain detection window according to yet some embodiments of the present disclosure.

[0126] As shown in FIG. 6, the D2R transmission received by the network side is in the form of a first time domain detection window, and after reaching the receiving end of the network side, the network side configures a second time domain detection window with a wider time domain range than the first time domain detection window, to detect the arrived D2R transmission. FIG. 6 is a configuration mode of the time domain detection window in the case where there is only one first time domain detection window in one second time domain detection window.

[0127] FIG. 7 is a configuration diagram of a time domain detection window according to yet some embodiments of the present disclosure.

[0128] As shown in FIG. 7, the D2R transmission received by the network side is in the form of a first time domain detection window. After arriving at the receiving end of the network side, the network side configures a second time domain detection window wider than the first time domain detection window to detect the arrived D2R transmission. FIG. 7 shows the configuration of the time domain detection window in the case where multiple first time domain detection windows exist in a second time domain detection window. The lengths of the multiple first time domain detection windows included in the second time domain detection window can be the same or different.

[0129] The lengths of the first time domain detection window and the second time domain detection window in FIGS. 6 and 7 can be configured by a higher layer.

[0130] The detection method for D2R transmission applied to the Internet of Things device will be described in detail below.

[0131] FIG. 8 is a flowchart showing the detection method for D2R transmission according to some embodiments of the present disclosure.

[0132] As shown in FIG. 8, the detection method for D2R transmission applied to the Internet of Things device includes: step S810, receiving time domain control information from a network side device, the time domain control information including a time domain detection window; and step S820, sending D2R transmission based on the time domain detection window, so that the network side device detects the D2R transmission within the time domain detection window. The time domain detection window is a time domain resource with a continuous time granularity or a time interval.

[0133] The network side device of the present disclosure includes, for example but not limited to, a base station. The Internet of Things device of the present disclosure includes, for example but not limited to, an environmental Internet of Things device.

[0134] The time domain detection window can be predefined, preconfigured, or network configured or indicated. The number of time domain detection windows is preconfigured by the network side device or predefined by the protocol or determined according to the length of the time domain detection window configured by the network side device.

[0135] For example, the D2R transmission includes at least one of a PDRCH (Physical Device to Reader Channel), D2R control information, a synchronization signal, and a reference signal. The PDRCH is a transmission channel on the D2R link for transmitting uplink information. Similarly, the PRDCH is a transmission channel on the R2D link for transmitting downlink information.

[0136] The Internet of Things device (Device) of the present disclosure can also be referred to as an Internet of Things terminal or an Internet of Things device terminal.

[0137] In the above embodiments, the detection of the D2R transmission is realized through the time domain detection window, which can improve the success rate of receiving the D2R transmission and guarantee the success of receiving the D2R transmission of the Internet of Things device, thereby establishing a guarantee mechanism for the D2R transmission. The time domain detection window is greater than the actual occupied time of one D2R transmission, so as to guarantee that different D2R time offsets can be received in the time domain detection window.

[0138] In some embodiments, the time domain detection window includes at least one first time domain detection window and / or at least one second time domain detection window, and the first time domain detection window belongs to a subset of the second time domain detection window. The first time domain detection window is located in the time interval of the second time domain detection window.

[0139] For example, the essence of the second time domain detection window is that the network side actually defines a time domain resource or a time detection interval reserved to prevent time offset, which is used to represent that this time interval is used for detecting the D2R transmission, and no other information is received or transmitted. It is a relatively coarse-grained time domain resource reservation, which can be a default or preconfigured by the network side. The first time domain detection window is the position and length of the D2R transmission signal actually found by the network side device in the detection process, that is, the time interval actually detected by the network side D2R transmission signal needs to occupy. Generally, the network side defines the time granularity at the minimum symbol level, so the second time domain detection window is represented as the number of minimum required OFDM symbols occupied by the D2R transmission.

[0140] In some embodiments, in the case where the first time domain detection window and the second time domain detection window exist at the same time, each second time domain detection window includes one or more first time domain detection windows. In the case where multiple second time domain detection windows exist, the multiple second time domain detection windows correspond to the D2R transmission of multiple Internet of Things devices.

[0141] For example, only one second time domain detection window can be defined, which can have one or more first time domain detection windows inside.

[0142] When there are multiple first time domain detection windows inside, each first time domain detection window can come from the same D2R transmission or from different D2R transmissions.

[0143] For example, a plurality of second time domain detection windows can also be defined, and one or more first time domain detection windows can be included in each second time domain detection window. When there are a plurality of second time domain detection windows, each second time domain detection window corresponds to a D2R transmission of an Internet of Things device, and the first time domain detection window in each second time domain detection window can be one or more (preferably, there is one first time domain detection window in each second time domain detection window). There can also be no correspondence between the second time domain detection window and the D2R transmission, and a plurality of second time domain detection windows can correspond to a plurality of different D2R transmissions. The length of each second time domain detection window can be the same or different.

[0144] In some embodiments, when any second time domain detection window includes a plurality of first time domain detection windows, the length of the any second time domain detection window is greater than or equal to the sum of the lengths of the plurality of first time domain detection windows; and / or there is or is not a time interval between the plurality of first time domain detection windows in the any second time domain detection window.

[0145] The present disclosure can also set rules within the window.

[0146] For example, when there is only one first time domain detection window in a second time domain detection window, the length of the second time domain detection window is longer than that of the first time domain detection window.

[0147] For example, the length of the second time domain detection window can be set to L time granules, and the length of the first time domain detection window can be set to l time granules. In this case, the starting position of the first time domain detection window is between the 0th time granule and the (L-l-1)th time granule. Alternatively, to ensure a certain interval between the first time domain detection windows, there can be a minimum time domain interval, such as T, between two first time domain detection windows. In this case, the starting position of the first time domain detection window is the T / 2th time granule to the (L-l-T / 2-1)th time granule. Alternatively, for the part of the second time domain detection window that is not within the first time domain detection window but is within the second time domain detection window, such as the part within the minimum time domain interval (also referred to as the minimum time interval) T, no D2R reception or detection is performed.

[0148] For example, when there are a plurality of first time domain detection windows in a second time domain detection window, the length of the second time domain detection window is longer than the sum of the lengths of the plurality of first time domain detection windows. In one case, the length of each first time domain detection window is the same, and the length of the second time domain detection window can be set to L time granules, and the length of the first time domain detection window can be set to l time granules. There are X first time domain detection windows in the second time domain detection window, which are respectively set to the 0th, 1st, …, xth, …, X-1th first time domain detection windows.

[0149] Based on this, the starting position of the first time domain detection window can be between the L / X*xth time domain granularity and the L / X*(x+1)-l-1th time domain granularity. Alternatively, to ensure a certain interval between the first time domain detection windows and guarantee the detection effect, a minimum time domain interval can be set between two first time domain detection windows. For example, the minimum time domain interval can be set as T, and the starting position of each first detection window in this case is the L / X*x-T / 2th to the L / X*(x+1)-T / 2-l-1th. Alternatively, the part located in the second time domain detection window but outside the first time domain detection window, such as the part within the minimum time interval T, is not subjected to the reception or detection of D2R.

[0150] For another example, when the second time domain detection window contains multiple first time domain detection windows, the length of the second time domain detection window is longer than the sum of the multiple first time domain detection windows. In one case, the length of each first time domain detection window is different, and the second time domain detection window can be set as L time granularities, and there are X first time domain detection windows in the second time domain detection window, which are respectively set as the 0th, 1st, …, xth, …, X-1st first time domain detection windows, and the lengths of the first time domain detection windows are respectively a, b, c, d, … time granularities.

[0151] Based on this, the starting position of the first time domain detection window is between the L / X*xth time domain granularity and the L / X*(x+1)-M-1th time domain granularity, where M can take one of the values of a, b, c, …, which depends on the serial number of the window. Alternatively, to ensure a certain interval between the first time domain detection windows and guarantee the detection effect, a minimum time domain interval can be set between two first time domain detection windows. The minimum time domain interval can be set as T, and the starting position of each first detection window is the L / X*x-T / 2th to the L / X*(x+1)-T / 2-M-1th, where M can take one of the values of a, b, c, …, which depends on the serial number of the window. Alternatively, the part located in the second time domain detection window but outside the first time domain detection window, such as the part within the minimum time interval T, is not subjected to the reception or detection of D2R.

[0152] In some embodiments, no NR or other non-Internet of Things or non-environmental Internet of Things signal is received in the second time domain detection window, and only the reception and detection of the D2R transmission of the Internet of Things or environmental Internet of Things are performed.

[0153] For example, the Internet of Things device determines the first time domain detection window to determine that the D2R transmission is shorter than a length threshold, and if the D2R transmission is too long, the segmented transmission processing is performed through the first detection window. The network side device configures the second time domain detection window to provide a sliding window for the D2R transmission of the Internet of Things device, and the D2R transmission is detected within the second time domain detection window, and the detection is not performed beyond the second time domain detection window.

[0154] The configuration of the first time domain detection window in some embodiments of the present disclosure will be described in detail below.

[0155] In some embodiments, the configuration of the first time domain detection window includes at least one of a length of the first time domain detection window, a start position of the first time domain detection window, and an end position of the first time domain detection window. For example, in a case where the length of the D2R transmission to be sent by the Internet of Things device is greater than the length of the first time domain detection window, the Internet of Things device sends the D2R transmission within the first time domain detection window.

[0156] The length of the first time domain detection window may, for example, be determined based on a configuration or indication of the network side device, or based on a maximum length or maximum duration of the D2R transmission that the Internet of Things device supports to send, or based on the length or duration of the D2R transmission sent by the Internet of Things device.

[0157] The length of the first time domain detection window may be determined by a parameter configured or indicated by the network, for example, X time granularities (also referred to as time domain granularities). The length of the first time domain detection window may also depend on the maximum length or maximum duration of the D2R transmission that the Internet of Things device can support to transmit, for example, Y time granularities. The length of the first time domain detection window may also depend on the duration or length of the D2R transmission of the present transmission, for example, Z time granularities.

[0158] In some embodiments, in a case where the length of the first time domain detection window is determined based on a configuration or indication of the network side device, the length of the first time domain detection window may be configured or indicated by at least one of the following ways.

[0159] The length of the first time domain detection window is configured or indicated according to the length of the first time domain detection window predefined by the protocol or preconfigured by the network side device. For example, the length of the first time domain detection window predefined by the protocol or preconfigured by the network side device has one or more values, and the values are determined according to the subcarrier spacing or the D2R transmission bandwidth.

[0160] The length of the first time domain detection window is configured or indicated according to the length of the D2R transmission of one or more Internet of Things devices configured or indicated by the network device.

[0161] The length of the first time domain detection window is configured or indicated according to a capability or a device category of the Internet of Things device. For example, the capability of the Internet of Things device includes at least one of a maximum transmission length of the Internet of Things device, a length of the first time domain detection window supported by the Internet of Things device, and a transmission length supported by the Internet of Things device. For another example, the length of the first time domain detection window configured or indicated according to the capability or the device category of the Internet of Things device includes that the length of the first time domain detection window corresponding to the device category of the Internet of Things device is configured or indicated according to a pre-defined or pre-configured correspondence between the device category and the length of the first time domain detection window.

[0162] In some embodiments, the length of the first time domain detection window is configured or indicated as the minimum value of at least one of a maximum transmission length of the Internet of Things device, a length of the first time domain detection window supported by the Internet of Things device, and a transmission length supported by the Internet of Things device, and a length of the D2R transmission configured by the network side device.

[0163] In the case that the length of the first time domain detection window is configured or indicated by the network side, the length can be configured or indicated according to a pre-defined or pre-configured value, one of multiple values can be selected for configuration or indication, the length of the target D2R transmission on the Internet of Things device side can be configured or indicated by the network, or the capability or category reported by the Internet of Things device can be configured or indicated.

[0164] Taking the length of the first time domain detection window configured or indicated according to the capability or the category reported by the Internet of Things device as an example, the Internet of Things device can report its own transmission length capability that it can support, and the network side can configure or indicate according to the capability as follows: the Internet of Things device reports its own maximum transmission length capability, and the network side configures or indicates according to the capability; the Internet of Things device reports its own capability of supporting the first time domain detection window, and the network side determines whether to configure (multiple) the first time domain detection window according to the capability; the Internet of Things device reports its own transmission length, and the network side configures (multiple) according to the reported transmission length.

[0165] Taking the length of the first time domain detection window configured or indicated according to the capability or the category reported by the Internet of Things device as an example, the Internet of Things device can also report its own category, and the network side can configure or indicate according to the category of the Internet of Things device as follows: the length of the time domain detection window under different categories of the Internet of Things device is pre-defined or pre-configured, and is configured or indicated according to the category reported by the Internet of Things device; or multiple lengths of the time domain detection window are pre-defined or pre-configured, and are configured according to the category of the Internet of Things device.

[0166] For example, in the presence of network side configuration, the length of the time domain detection window configured by the network side is the final time domain detection window length; in the absence of network side configuration, at least one of the transmission capability, the maximum transmission capability, and the detection window length reported by the Internet of Things device is compared with the length of the D2R transmission configured by the network side, and the minimum value is taken as the final detection window length value.

[0167] The starting position of the first time domain detection window may be, for example, the first time granularity of the D2R transmission (to be sent by the Internet of Things device), or the first time granularity after the last time granularity of the previous time domain detection window, or the time granularity at a distance of a preset number of time granularities from the last time granularity of the previous time domain detection window, or the first time granularity at the start of the midamble. The preset number of time granularities is, for example, X, where X is predefined, preconfigured, or network configured or indicated.

[0168] For example, the first time granularity of the D2R transmission may be the first granularity of the preamble, or the first granularity of the D2R transmission after the preamble, or the first granularity of the midamble, or a granularity of the D2R transmission after the midamble.

[0169] The preamble, also known as the preamble synchronization code, is used to obtain the position of synchronization in asynchronous transmission, and is generally located at the head of the transmitted signal.

[0170] The midamble, also known as the midamble synchronization code, is used to correct or align the synchronization in the middle of asynchronous transmission, and is generally located in the middle of the transmitted signal.

[0171] The ending position of the first time domain detection window may be, for example, the last time granularity of the D2R transmission (to be sent by the Internet of Things device), or the last time granularity of the length of the first time domain detection window, or the last time granularity before the start of the midamble, or the time granularity at a distance of a preset number of time granularities from the start of the midamble. For example, the preset number of time granularities is, for example, X, where X is predefined, preconfigured, or network configured or indicated.

[0172] For example, the last time granularity of the D2R transmission may be the last granularity of the D2R transmission, or the last granularity of the postamble, or the last granularity before the preamble.

[0173] The postamble, also known as the postamble synchronization code, is used to obtain the end position in asynchronous transmission, and is generally located at the tail of the transmitted signal.

[0174] The configuration of the second time domain detection window in some embodiments of the present disclosure will be described in detail below.

[0175] In some embodiments, the configuration of the second time domain detection window includes at least one of the length of the second time domain detection window, the starting position of the second time domain detection window, and the ending position of the second time domain detection window. For example, the physical network device sends the D2R transmission based on the time domain detection window. If the length of the D2R transmission to be sent is greater than the length of the second time domain detection window, the D2R transmission within the second time domain detection window can also be sent, that is, the Internet of Things device can cut part of the D2R transmission according to the situation.

[0176] For example, the length of the second time domain detection window is determined based on the configuration or indication of the network side device, or based on the theoretical length or the theoretical maximum length of all D2R transmissions or the sum of the theoretical length and the theoretical maximum length, or based on the longest duration of D2R transmissions of multiple Internet of Things devices or the sum of the durations of D2R transmissions of multiple Internet of Things devices.

[0177] The length of the second time domain detection window can also be referred to as the duration of the second time domain detection window. The duration of the second time domain detection window can determine the length of the second detection window by a parameter configured or indicated by the network, which is X time granularity; it can also depend on the theoretical duration length or the theoretical maximum duration of all D2R transmissions or the sum of the durations of all D2R transmissions; it can also depend on the duration length or duration of the current D2R transmission. If there are D2R transmissions of multiple Internet of Things devices, it depends on the longest duration of D2R transmissions of all Internet of Things devices or the sum of the durations of all D2R transmissions.

[0178] In some embodiments, in the case where the length of the second time domain detection window is determined based on the configuration or indication of the network side device, the length of the second time domain detection window can also be configured or indicated by at least one of the following ways.

[0179] The length of the second time domain detection window is configured or indicated according to the length of the second time domain detection window preconfigured by the network side device or preconfigured by the protocol. For example, the length of the second time domain detection window preconfigured by the network side device or preconfigured by the protocol has one or more values, and the multiple values are determined according to the subcarrier spacing or the D2R transmission bandwidth.

[0180] The length of the second time domain detection window is configured or indicated according to the length of the D2R transmission of one or more Internet of Things devices configured or indicated by the network device.

[0181] The length of the second time domain detection window is configured or indicated according to a capability or a device category of the Internet of Things device. For example, the capability of the Internet of Things device includes at least one of a maximum transmission length of the Internet of Things device, a length of the second time domain detection window supported by the Internet of Things device, and a transmission length supported by the Internet of Things device. For example, the length of the first time domain detection window is configured or indicated according to a capability or a device category of the Internet of Things device includes that the length of the second time domain detection window corresponding to the device category of the Internet of Things device is configured or indicated according to a pre-defined or pre-configured correspondence between device categories and lengths of the second time domain detection window, or a pre-configured correspondence between device categories and lengths of the second time domain detection window by the network side device.

[0182] In the above embodiment, in the case where the length of the second time domain detection window is configured or indicated by the network side, the length can be configured or indicated according to a pre-defined or pre-configured value, or one of multiple values is selected for configuration or indication; the length can also be configured or indicated according to a length of a target D2R transmission of the Internet of Things device configured or indicated by the network, where the target D2R can be a D2R transmission of one Internet of Things device, or a length of a longest D2R transmission in D2R transmissions of multiple Internet of Things devices, i.e., a maximum length; the length can also be configured or indicated according to a capability or a category reported by the Internet of Things device, where the target Internet of Things device can be one Internet of Things device, or D2R transmissions of multiple Internet of Things devices.

[0183] In the case where the length is configured or indicated according to a capability or a category reported by the Internet of Things device, the Internet of Things device can report a transmission length capability that it can support, for example, and the network side configures or indicates the length according to the capability. For example, the Internet of Things device can report a maximum transmission length capability of itself, and the network side configures or indicates the length according to the capability. If multiple Internet of Things devices upload maximum transmission capabilities, the length is configured according to the maximum value of the maximum transmission length capabilities. The Internet of Things device can also report a transmission length that it supports, for example, and the network side configures (multiple) the length according to the reported transmission length.

[0184] In the case where the length is configured or indicated according to a capability or a category reported by the Internet of Things device, the Internet of Things device can report a category of itself, for example, and the network side configures or indicates the length according to the category of the Internet of Things device. For example, lengths of time domain detection windows under different categories of Internet of Things devices are pre-defined or pre-configured, and the length is configured or indicated according to the category reported by the Internet of Things device. For another example, multiple lengths of time domain detection windows are pre-defined or pre-configured, and the length is configured according to the category of the Internet of Things device.

[0185] For example, the start position of the second time domain detection window is the first OFDM symbol in a slot or a subframe or a frame, or the first slot in a subframe or a frame, or the first time granularity of the D2R transmission, or the first OFDM symbol in the slot occupied by the start time granularity of the D2R transmission, or the start position of the OFDM symbol occupied by the start time granularity of the D2R transmission, or the OFDM symbol or slot at a preset position after the end position of the previous second time domain detection window, or the first time granularity of the first D2R transmission after the end position of the previous second time domain detection window.

[0186] Specifically, the start position of the second time domain detection window can be the first OFDM symbol in a slot or a subframe or a frame, which can be the start position of the OFDM symbol, for example, the first sampling point; or the first slot in a subframe or a frame, which can be the start position of the slot, for example, the first sampling point; or the first time granularity of the D2R transmission; or the first OFDM symbol in the slot occupied by the start time granularity of the D2R transmission, which can be the start position of the OFDM symbol, for example, the first sampling point; or the start position of the OFDM symbol occupied by the start time granularity of the D2R transmission, which can be the start position of the OFDM symbol, for example, the first sampling point; or the first OFDM symbol after the end position of the previous second detection window, which can be the start position of the OFDM symbol, for example, the first sampling point; or the first slot after the end position of the previous second detection window, which can be the start position of the slot, for example, the first sampling point; or X OFDM symbols or slots after the end position of the previous second detection window, which can be the start position of the OFDM symbol or slot, for example, the first sampling point, where X can be predefined, preconfigured, network configured or indicated; or the first time granularity of the first D2R transmission after the end position of the previous second detection window, where the D2R transmission can be transmitted by the target IoT device or by another IoT device.

[0187] For example, the end position of the second time domain detection window is the last time granularity of the D2R transmission or another D2R transmission, or the end of the OFDM symbol or the end of the slot where the last time granularity of the D2R transmission or another D2R transmission is located, or the last time granularity of the length of the second time domain detection window.

[0188] Specifically, the end position of the second time domain detection window can be the last time domain granularity of the D2R transmission; can also be the end of the OFDM symbol in which the last time domain granularity of the D2R transmission is located, which can be the last sampling point of the OFDM symbol; can also be the end of the slot in which the last time domain granularity of the D2R transmission is located, which can be the last sampling point of the slot; can also be the last time domain granularity of other D2R transmission; can also be the end of the OFDM symbol in which the last time domain granularity of other D2R transmission is located, which can be the last sampling point of the OFDM symbol; can also be the end of the slot in which the last time domain granularity of other D2R transmission is located, which can be the last sampling point of the slot; or can also be the last time domain granularity of the time domain detection window length.

[0189] Similar to the first time domain detection window, for the second time domain detection window, in the case of network side configuration, the network side configured time domain detection window length is the final time domain detection window length; in the case of no network side configuration, a default value is predefined or preconfigured as the final detection window length value, which can be associated with the capability of the Internet of Things device, the type of the Internet of Things device or the length of the D2R transmission, for example, the default value can be compared with the longest length or the sum of lengths of all D2R transmissions, and the smaller value is configured.

[0190] The detection of the D2R transmission in the time domain detection window in some embodiments of the present disclosure will be described in detail below.

[0191] In the case where the time domain detection window includes the first time domain detection window and the second time domain detection window, the D2R transmission located in the first time domain detection window can be detected in the second time domain detection window.

[0192] In some embodiments, the detection of the D2R transmission located in the first time domain detection window in the second time domain detection window can be realized by the following way.

[0193] In the case where there are multiple D2R transmissions in the second time domain detection window, and the number of the multiple D2R transmissions is more than the number of the first time domain detection window or the total length of the multiple D2R transmissions is greater than the length of the second time detection window, the D2R transmission located in the first time domain detection window is detected in the second time domain detection window in the order from high to low according to the priority of the multiple D2R transmissions or in the order from early to late according to the time of the multiple D2R transmissions.

[0194] For example, after the sorting according to the priority of the plurality of D2R transmissions from high to low or the time of the plurality of D2R transmissions from early to late, the D2R transmission located outside the second time domain detection window or with a length exceeding the second time domain detection window is detected in the next second time domain detection window after the second time domain detection window or is discarded. For example, in this case, the D2R transmission with a low priority can be discarded according to the priority of the D2R transmission, or the D2R transmission arrived later can be discarded according to the order of the D2R transmission, or all the D2R transmissions outside the current second time domain detection window can be discarded.

[0195] The configuration of the actual window of the second time domain detection window in some embodiments of the present disclosure will be described below.

[0196] In some embodiments, whether to open the actual window of the second time domain detection window can be determined according to at least one of the capability information supporting the actual window of the second time domain detection window, the configuration information, and the device type of the Internet of Things device; and / or, in the case of determining to open the actual window of the second time domain detection window, the actual window of the second time domain detection window can be set, wherein the start position of the actual window is the same as the start position of the second time domain detection window or the start position of the actual window is the first time granularity after the end of the event affected in the second time domain detection window, and the end position of the actual window is the end position of the second time domain detection window or the time granularity before the start time granularity of the event affected in the second time domain detection window.

[0197] For example, in the case of no actual window of the second time domain detection window, the second time domain detection window stops being used in response to the second time domain detection window being affected by an event; and / or, in the case of the capability information indicating that the Internet of Things device supports the actual window of the second time domain detection window, and / or the configuration information configuring or indicating to open the actual window of the second time domain detection window, and / or the device type of the Internet of Things device satisfying the rule of opening the actual window of the second time domain detection window, the actual window of the second time domain detection window is determined to be opened.

[0198] In some embodiments, an event occurs in the second time domain detection window, which causes the second time domain detection window to be broken, for example, the time domain resource in this paragraph is indicated by DCI (Downlink Control Information) or other instructions for other purposes, then at least one of the following operations can be performed.

[0199] Operation 1, configure that the second time domain detection window in this paragraph of time cannot be used.

[0200] Operation 2, set up an actual window of the second time domain detection window. The start position of the actual window is the same as the start position of the second time domain detection window, or the start position of the actual window is inside the second time domain detection window, and is the first time granularity after the event ends, which can be the start position of the time granularity, such as the first sampling point. The end position of the actual window is the end position of the second time domain detection window, or the end position of the actual window is inside the second time domain detection window, and is the time granularity before the start time granularity of the second time domain detection window affected by the event, which can be the end of the time granularity, such as the last sampling point. The time granularity can be the last time granularity of the OFDM symbol, the time slot, the subframe, the frame, or the D2R transmission. For example, the actual window cannot cross the second time domain detection window.

[0201] The event that causes the second time domain detection window to be broken can include at least one of the following, for example: some uplink time slots are indicated as downlink time slots, or some downlink time slots are indicated as uplink time slots (depending on whether the time slot of the received Internet of Things signal is uplink or downlink), some uplink or downlink time slots are indicated as unavailable, the interference level measured by a certain segment of continuous time domain resources in the second time domain detection window exceeds a threshold value (which can be pre-configured or pre-defined).

[0202] The number of actual windows of the second time domain detection window can be pre-configured, pre-defined, configured or indicated by the network side, or calculated and obtained according to the length of the first time domain detection window and the length of the second time domain detection window configured by the network side. In the case of multiple actual windows of the second time domain detection window, the time interval of the multiple actual windows can be pre-configured, pre-defined, configured or indicated by the network side.

[0203] For example, the actual window of the second time domain detection window is pre-configured, pre-defined, or configured or indicated by the network side. According to the related information pre-configured, pre-defined, or configured or indicated by the network side, it can be determined whether to start the actual window of the second time domain detection window. For another example, the network side can configure whether to support the actual window of the second time domain detection window in the case that the Internet of Things device reports to the network side whether it supports the capability of the actual window of the second time domain detection window. For another example, the Internet of Things device can also report its type, and the network side device can configure whether to support the actual window of the second time domain detection window according to the reported type and the default rule.

[0204] In some embodiments, the actual window of the second time domain detection window can be configured to be re-opened. For example, the re-opening of the actual window can be pre-configured, pre-defined, network side configured or indicated, for determining whether the network side opens a new actual window after experiencing the event. For another example, the IoT device can report whether it supports re-opening a new actual window after experiencing the event, and the network side configures the corresponding configuration according to the report. For another example, the IoT device can report its category, and the network side configures whether to support re-opening the actual window of the second time domain detection window after experiencing the event according to the reported category and the default rule.

[0205] In any of the above embodiments, the time granularity comprises at least one of a bit, a transport block, an OOK (On-Off Keying) chip, a microsecond, a sampling point, a PDRCH (Physical Layer Device-to-Reader Transmission Channel) chip, a PDRCH symbol, a PDRCH slot, a PDRCH sampling point, a D2R chip, a D2R symbol, a D2R slot, a D2R sampling point.

[0206] In the following, devices or systems in some embodiments of the present disclosure will be described.

[0207] The present disclosure also provides a network side device configured to perform the detection method in any of the embodiments of the present disclosure.

[0208] The present disclosure also provides an IoT device configured to perform the detection method in any of the embodiments of the present disclosure.

[0209] FIG. 9 is a block diagram illustrating a detection system for D2R transmission according to some embodiments of the present disclosure.

[0210] As shown in FIG. 9, the detection system for D2R transmission 9 comprises a network side device 91 and an IoT device 92. The network side device 91 is a network device in any of the embodiments of the present disclosure, for example, performing the detection method in any of the embodiments of the present disclosure. The IoT device 92 is an IoT device in any of the embodiments of the present disclosure, for example, performing the detection method in any of the embodiments of the present disclosure.

[0211] FIG. 10 is a block diagram illustrating an electronic device according to some embodiments of the present disclosure.

[0212] As shown in FIG. 10, the electronic device 10 comprises a memory 101 and a processor 102 coupled to the memory 101. The memory 101 is configured to store instructions for performing a corresponding embodiment of the detection method. The processor 102 is configured to perform the detection method in any of some embodiments of the present disclosure based on the instructions stored in the memory 101.

[0213] FIG. 11 is a block diagram illustrating a computer system for implementing some embodiments of the present disclosure.

[0214] As shown in FIG. 11, computer system 110 can be in the form of a general- purpose computing device. Computer system 110 includes memory 1110, processor 1120, and bus 1100 that couples various system components including the memory 1110 to the processor 1120.

[0215] The memory 1110 can include, for example, system memory, non-volatile storage media, and the like. The system memory can store, among other things, an operating system, application programs, a Boot Loader, and other programs such as those that implement at least one of the detection methods. The system memory can include volatile storage media, such as random access memory (RAM) and / or cache memory. The non-volatile storage media can store, among other things, instructions to implement a corresponding embodiment of at least one of the detection methods. The non-volatile storage media includes, but is not limited to, magnetic storage media, optical storage media, flash memory, and the like.

[0216] The processor 1120 can be implemented with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like. Accordingly, each module such as the determining module and the judging module can be implemented by a central processing unit (CPU) running instructions in the memory to perform corresponding steps, or by a dedicated circuit performing corresponding steps.

[0217] The bus 1100 can use any of a variety of bus structures, including, but not limited to, an Industry Standard Architecture (ISA) bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus.

[0218] The computer system 110 can also include input / output interface 1130, network interface 1140, storage interface 1150, and the like. These interfaces 1130, 1140, 1150, and the memory 1110 and the processor 1120 can be connected through the bus 1100. The input / output interface 1130 can provide a connection interface for display, mouse, keyboard, and the like input / output devices. The network interface 1140 provides a connection interface for various networking devices. The storage interface 1150 provides a connection interface for external storage devices such as floppy disks, U disks, SD cards, and the like.

[0219] Here, various aspects of the disclosure are described with reference to flowcharts and / or block diagrams of methods, apparatuses and computer program products according to embodiments of the disclosure. It should be understood that each block of the flowcharts and / or block diagrams, as well as combinations of blocks in the flowcharts and / or block diagrams, can be implemented by computer readable program instructions.

[0220] These computer readable program instructions can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart block or blocks or in the block or blocks of the corresponding figure.

[0221] These computer readable program instructions can also be stored in a computer readable storage medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable storage medium produce an article of manufacture including instructions which implement the function specified in the flowchart block or blocks or in the block or blocks of the corresponding figure.

[0222] The present disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment containing both software and hardware aspects.

[0223] Some embodiments of the present disclosure further provide a computer program product, comprising a computer program which, when executed by a processor, implements the detection method according to any of the above embodiments.

[0224] By the detection method and device for D2R transmission, the network side device, the Internet of Things device and the computer readable storage medium in the above embodiments, the success receiving rate of D2R transmission of the Internet of Things device can be improved.

[0225] So far, the detection method and device for D2R transmission, the network side device, the Internet of Things device and the computer readable storage medium according to the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

Claims

1. A detection method for device-to-reader (D2R) transmission, applied to a network-side device, comprising: sending time-domain control information to an Internet of Things (IoT) device, the time-domain control information comprising a time-domain detection window; receiving a D2R transmission sent by the IoT device based on the time-domain detection window; detecting the D2R transmission within the time-domain detection window.

2. The detection method according to claim 1, wherein, The time-domain detection window comprises at least one first time-domain detection window and / or at least one second time-domain detection window, the first time-domain detection window belonging to a subset of the second time-domain detection window.

3. The detection method according to claim 2, wherein, The configuration of the first time-domain detection window comprises at least one of a length of the first time-domain detection window, a start position of the first time-domain detection window, and an end position of the first time-domain detection window, wherein: The length of the first time-domain detection window is determined based on a configuration or indication of the network-side device, or based on a maximum length or maximum duration of a D2R transmission supported by the IoT device to send, or based on a length or duration of a D2R transmission sent by the IoT device; The start position of the first time-domain detection window is at a first time granularity of the D2R transmission, or at a first time granularity after a last time granularity of a previous time-domain detection window of the first time-domain detection window, or at a time granularity at a preset number of time granularities after the last time granularity of the previous time-domain detection window of the first time-domain detection window, or at a first time granularity of a midamble start; The end position of the first time-domain detection window is at a last time granularity of the D2R transmission, or at a last time granularity of the length of the first time-domain detection window, or at a last time granularity before a midamble start, or at a time granularity at a preset number of time granularities before the midamble start.

4. The detection method of claim 3, further comprising: In the case where the length of the first time-domain detection window is determined based on a configuration or indication of the network-side device: configuring or indicating the length of the first time-domain detection window according to a length of the first time-domain detection window predefined by a protocol or preconfigured by the network-side device; or configuring or indicating the length of the first time-domain detection window according to a length of a D2R transmission of one or more IoT devices configured or indicated by the network device; or configuring or indicating the length of the first time-domain detection window according to a capability or a device category of the IoT device.

5. The detection method according to claim 4, wherein The length of the first time-domain detection window predefined by the protocol or preconfigured by the network-side device has one or more values, the values being determined according to a subcarrier spacing or a D2R transmission bandwidth; or The capability of the IoT device comprises at least one of a maximum transmission length of the IoT device, a length of the first time-domain detection window supported by the IoT device, and a transmission length supported by the IoT device; or According to the capability or device category of the Internet of Things device, the length of the first time domain detection window is configured or indicated, including: according to the correspondence between the device category and the length of the first time domain detection window pre-defined by the protocol or pre-configured by the network side device, configuring or indicating the length of the first time domain detection window corresponding to the device category of the Internet of Things device.

6. The detection method according to claim 5, wherein, According to the capability or device category of the Internet of Things device, the length of the first time domain detection window is configured or indicated, including: At least one of the maximum transmission length of the Internet of Things device, the length of the first time domain detection window supported by the Internet of Things device, and the transmission length supported by the Internet of Things device is configured or indicated as the minimum value of the length of the D2R transmission configured by the network side device.

7. The detection method according to claim 2, wherein, The configuration of the second time domain detection window includes at least one of the length of the second time domain detection window, the starting position of the second time domain detection window, and the ending position of the second time domain detection window, Wherein: The length of the second time domain detection window is determined based on the configuration or indication of the network side device, or based on the theoretical length or the theoretical maximum length of all D2R transmissions or the sum of the theoretical length and the theoretical maximum length, or based on the longest duration of D2R transmissions of multiple Internet of Things devices or the sum of the durations of D2R transmissions of multiple Internet of Things devices; The starting position of the second time domain detection window is the first orthogonal frequency division multiplexing OFDM symbol in a slot or a subframe or a frame, or the first slot in a subframe or a frame, or the first time granularity of the D2R transmission, or the first OFDM symbol in the slot occupied by the starting time granularity of the D2R transmission, or the starting position of the OFDM symbol occupied by the starting time granularity of the D2R transmission, or the OFDM symbol or slot located at a preset position after the ending position of the previous second time domain detection window of the second time domain detection window, or the first time granularity of the first D2R transmission located after the ending position of the previous second time domain detection window of the second time domain detection window; The ending position of the second time domain detection window is the last time granularity of the D2R transmission or other D2R transmissions, or the end of the OFDM symbol or the end of the slot where the last time granularity of the D2R transmission or other D2R transmissions is located, or the last time granularity of the length of the second time domain detection window.

8. The detection method of claim 7, further comprising: In the case where the length of the second time domain detection window is determined based on the configuration or indication of the network side device: According to the length of the second time domain detection window pre-defined by the protocol or pre-configured by the network side device, the length of the second time domain detection window is configured or indicated; Or According to the length of the D2R transmission of one or more Internet of Things devices configured or indicated by the network device, the length of the second time domain detection window is configured or indicated; Or According to the capability or device category of the Internet of Things device, the length of the second time domain detection window is configured or indicated.

9. The detection method according to claim 8, wherein, The length of the second time domain detection window pre-defined by the protocol or pre-configured by the network side device has one or more values, and the values are determined according to subcarrier spacing or D2R transmission bandwidth; Or The capability of the IoT device includes at least one of the maximum transmission length of the IoT device, the length of the second time domain detection window supported by the IoT device, and the transmission length supported by the IoT device; Or According to the capability or device category of the IoT device, configuring or indicating the length of the first time domain detection window includes: according to the correspondence between the device category and the length of the second time domain detection window pre-defined by the protocol or pre-configured by the network side device, configuring or indicating the length of the second time domain detection window corresponding to the device category of the IoT device.

10. The detection method according to claim 2, wherein, In the time domain detection window, detecting the D2R transmission includes: in the second time domain detection window, detecting the D2R transmission located in the first time domain detection window; and / or Each second time domain detection window includes one or more first time domain detection windows.

11. The detection method according to claim 10, wherein, In the case where there are multiple second time domain detection windows, the multiple second time domain detection windows correspond to the D2R transmissions of multiple IoT devices.

12. The detection method according to claim 10, wherein, In the case where any second time domain detection window includes multiple first time domain detection windows, the length of the any second time domain detection window is greater than or equal to the sum of the lengths of the multiple first time domain detection windows; And / or there is or is not a time interval between the multiple first time domain detection windows in the any second time domain detection window.

13. The detection method according to claim 2, wherein, In the second time domain detection window, detecting the D2R transmission located in the first time domain detection window includes: In the case where there are multiple D2R transmissions in the second time domain detection window, and the number of the multiple D2R transmissions is more than the number of the first time domain detection windows or the total length of the multiple D2R transmissions is greater than the length of the second time domain detection window, in the second time domain detection window, the D2R transmission located in the first time domain detection window is detected in the order of the priority of the multiple D2R transmissions from high to low or the order of the time of the multiple D2R transmissions from early to late.

14. The detection method according to claim 13, wherein, After the sorting in the order of the priority of the multiple D2R transmissions from high to low or the order of the time of the multiple D2R transmissions from early to late is completed, the D2R transmission located outside the second time domain detection window or having a length exceeding the second time domain detection window is detected in the next second time domain detection window after the second time domain detection window, or discarded.

15. The detection method of claim 2, further comprising: According to at least one of the capability information of whether to support the actual window of the second time domain detection window, the configuration information, and the device category of the IoT device, determining whether to start the actual window of the second time domain detection window; And / or In a case where it is determined to open the actual window of the second time domain detection window, an actual window of the second time domain detection window is set, wherein a start position of the actual window is the same as a start position of the second time domain detection window or the start position of the actual window is a first time granularity after an event-affected end in the second time domain detection window, and an end position of the actual window is an end position of the second time domain detection window or a time granularity before a start time granularity of the event-affected in the second time domain detection window.

16. The detection method of claim 15, further comprising: In a case where there is no actual window of the second time domain detection window, stopping using the second time domain detection window in response to the second time domain detection window being affected by an event; and / or In a case where the capability information indicates that the Internet of Things device supports the actual window of the second time domain detection window, and / or the configuration information configures or indicates to open the actual window of the second time domain detection window, and / or the device category of the Internet of Things device meets a rule for opening the actual window of the second time domain detection window, it is determined to open the actual window of the second time domain detection window.

17. The detection method of claim 1, wherein, The number of time domain detection windows is preconfigured by the network side device or is pre-defined by a protocol or is determined according to the length of the time domain detection window configured by the network side device.

18. The detection method according to claim 3, wherein, The time granularity includes at least one of a bit, a transport block, an on-off keying chip OOK chip, a microsecond, a sampling point, a physical layer device-to-reader transmission channel chip PDRCH chip, a PDRCH symbol, a PDRCH slot, a PDRCH sampling point, a D2R chip, a D2R symbol, a D2R slot, and a D2R sampling point.

19. A detection method for device-to-reader D2R transmission, applied to an Internet of Things device, comprising: receiving time domain control information from a network side device, the time domain control information including a time domain detection window; sending a D2R transmission based on the time domain detection window, so that the network side device detects the D2R transmission within the time domain detection window.

20. The detection method of claim 19, wherein, The time domain detection window includes at least one first time domain detection window and / or at least one second time domain detection window, and the first time domain detection window belongs to a subset of the second time domain detection window.

21. The detection method of claim 20, wherein, The configuration of the first time domain detection window includes at least one of a length of the first time domain detection window, a start position of the first time domain detection window, and an end position of the first time domain detection window, wherein: The length of the first time domain detection window is determined based on a configuration or indication of the network side device, or based on a maximum length or maximum duration of a D2R transmission supported by the Internet of Things device for sending, or based on a length or duration of a D2R transmission sent by the Internet of Things device; a start position of the first time domain detection window is at a first time granularity of the D2R transmission, or at a first time granularity after a last time granularity of a previous time domain detection window of the first time domain detection window, or at a time granularity that is a preset number of time granularities after the last time granularity of the previous time domain detection window of the first time domain detection window, or at a first time granularity of a midamble start; an end position of the first time domain detection window is at a last time granularity of the D2R transmission, or at a last time granularity of a length of the first time domain detection window, or at a last time granularity before a midamble start, or at a time granularity that is a preset number of time granularities before the midamble start.

22. The detection method of claim 21, wherein, in a case where the length of the first time domain detection window is determined based on a configuration or indication of the network-side device: the length of the first time domain detection window is configured or indicated according to a length of D2R transmission of one or more Internet of Things devices configured or indicated by the network device; or the length of the first time domain detection window is configured or indicated according to a capability or device category of the Internet of Things device. the length of the first time domain detection window configured or indicated according to the capability or device category of the Internet of Things device includes that a length of the first time domain detection window corresponding to the device category of the Internet of Things device is configured or indicated according to a correspondence between device categories and lengths of first time domain detection windows pre-defined by a protocol or pre-configured by the network-side device.

23. The detection method of claim 22, wherein, the length of the first time domain detection window is configured or indicated as a minimum value among at least one of a maximum transmission length of the Internet of Things device, a length of the first time domain detection window supported by the Internet of Things device, and a transmission length supported by the Internet of Things device and a length of D2R transmission configured by the network-side device. the configuration of the second time domain detection window includes at least one of a length of the second time domain detection window, a start position of the second time domain detection window, and an end position of the second time domain detection window, wherein: the length of the second time domain detection window is determined based on a configuration or indication of the network-side device, or based on a theoretical length or a theoretical maximum length of all D2R transmissions or a sum of the theoretical length and the theoretical maximum length, or based on a longest duration among D2R transmissions of multiple Internet of Things devices or a sum of durations of D2R transmissions of multiple Internet of Things devices; ​ 24. The detection method of claim 23, wherein, ​ 25. The detection method of claim 20, wherein, ​ ​ ​ The starting position of the second time domain detection window is the first OFDM symbol in a slot or a subframe or a frame, or the first slot in a subframe or a frame, or the first time granularity of the D2R transmission, or the first OFDM symbol in the slot occupied by the starting time granularity of the D2R transmission, or the starting position of the OFDM symbol occupied by the starting time granularity of the D2R transmission, or the OFDM symbol or slot at a preset position after the ending position of the previous second time domain detection window of the second time domain detection window, or the first time granularity of the first D2R transmission after the ending position of the previous second time domain detection window of the second time domain detection window. The ending position of the second time domain detection window is the last time granularity of the D2R transmission or other D2R transmission, or the end of the OFDM symbol or the end of the slot where the last time granularity of the D2R transmission or other D2R transmission is located, or the last time granularity of the length of the second time domain detection window.

26. The detection method of claim 25, wherein, In the case where the length of the second time domain detection window is determined based on the configuration or indication of the network side device: The length of the second time domain detection window is configured or indicated according to the length of the D2R transmission of one or more Internet of Things devices configured or indicated by the network device; or The length of the second time domain detection window is configured or indicated according to the capability or device category of the Internet of Things device. The length of the second time domain detection window pre-configured by the network side device has one or more values, and the multiple values are determined according to subcarrier spacing or D2R transmission bandwidth; 27. The detection method of claim 26, wherein, Or The capability of the Internet of Things device includes at least one of the maximum transmission length of the Internet of Things device, the length of the second time domain detection window supported by the Internet of Things device, and the transmission length supported by the Internet of Things device; Or The length of the first time domain detection window is configured or indicated according to the capability or device category of the Internet of Things device, including that the length of the second time domain detection window corresponding to the device category of the Internet of Things device is configured or indicated according to the correspondence between the device category and the length of the second time domain detection window pre-defined by the protocol or pre-configured by the network side device.

28. The detection method of claim 20, wherein, Within the second time domain detection window, the D2R transmission located in the first time domain detection window is detected; and / or Each second time domain detection window includes one or more first time domain detection windows. In the case where there are multiple second time domain detection windows, the multiple second time domain detection windows correspond to the D2R transmissions of multiple Internet of Things devices.

29. The detection method of claim 28, wherein, In the case where any second time domain detection window includes multiple first time domain detection windows, the length of the any second time domain detection window is greater than or equal to the sum of the lengths of the multiple first time domain detection windows; 30. The detection method of claim 28, wherein, And / or there is or is not a time interval between the multiple first time domain detection windows in the any second time domain detection window. In the case where there are multiple second time domain detection windows, the multiple second time domain detection windows correspond to the D2R transmissions of multiple Internet of Things devices. In the case where any second time domain detection window includes multiple first time domain detection windows, the length of the any second time domain detection window is greater than or equal to the sum of the lengths of the multiple first time domain detection windows; And / or there is or is not a time interval between the multiple first time domain detection windows in the any second time domain detection window.

31. The detection method of claim 20, wherein, In a case that there are multiple D2R transmissions in the second time domain detection window, and the number of the multiple D2R transmissions is more than the number of the first time domain detection window or the total length of the multiple D2R transmissions is greater than the length of the second time domain detection window, the D2R transmissions located in the first time domain detection window are detected in the second time domain detection window in an order from high to low according to the priority of the multiple D2R transmissions or in an order from early to late according to the time of the multiple D2R transmissions.

32. The detection method of claim 31, wherein, After the sorting in the order from high to low according to the priority of the multiple D2R transmissions or in the order from early to late according to the time of the multiple D2R transmissions is completed, the D2R transmissions located outside the second time domain detection window or with a length exceeding the second time domain detection window are detected in a next second time domain detection window after the second time domain detection window or discarded.

33. The detection method of claim 20, wherein, Whether to open the actual window of the second time domain detection window is determined according to at least one of capability information, configuration information and device type of the Internet of Things device whether to support the actual window of the second time domain detection window; and / or In a case that it is determined to open the actual window of the second time domain detection window, the actual window of the second time domain detection window is set, wherein a start position of the actual window is the same as a start position of the second time domain detection window or is a first time granularity after an end of the second time domain detection window affected by an event, and an end position of the actual window is an end position of the second time domain detection window or is a time granularity before a start of the second time domain detection window affected by the event.

34. The detection method of claim 33, wherein, In a case that there is no actual window of the second time domain detection window, the second time domain detection window stops being used in response to the second time domain detection window being affected by an event; and / or In a case that the capability information indicates that the Internet of Things device supports the actual window of the second time domain detection window, and / or the configuration information configures or indicates to open the actual window of the second time domain detection window, and / or the device type of the Internet of Things device meets a rule of opening the actual window of the second time domain detection window, the actual window of the second time domain detection window is determined to be opened.

35. The assay method of claim 19, wherein, The number of the time domain detection windows is preconfigured by the network side device or is pre-defined by a protocol or is determined according to the length of the time domain detection window configured by the network side device.

36. The assay method of claim 21, wherein, The time granularity includes at least one of a bit, a transport block, an on-off keying chip OOK chip, a microsecond, a sampling point, a physical layer device-to-reader transmission channel chip PDRCH chip, a PDRCH symbol, a PDRCH slot, a PDRCH sampling point, a D2R chip, a D2R symbol, a D2R slot, a D2R sampling point. 37.A network side device configured to perform the detection method of any one of claims 1-18. 38.An Internet of Things device configured to perform the detection method of any one of claims 19-36. 39.A detection system for device-to-reader D2R transmission, comprising: The network-side device of claim 37; and / or The Internet of Things device of claim 38.

40. An electronic device comprising: a memory; and a processor coupled to the memory, the processor configured to perform the detection method of any one of claims 1 to 36 based on instructions stored in the memory.

41. A computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the detection method of any one of claims 1 to 36.

42. A computer program comprising computer instructions, wherein the computer instructions, when executed by a processor, implement the detection or reception method of any one of claims 1 to 36.

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