Method and device in wireless communication system

Abstract

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method and a device in a wireless communication system are disclosed, the method including: receiving a first command related to access, wherein the first command includes a first value; transmitting first information based on the first value; receiving a third command related to access if first response information related to the first information is not received; and transmitting second information based on the third command and the first value, wherein the transmitting of the first information comprises transmitting the first information in a first format and the transmitting of the second information comprises transmitting the second information in a second format.

Description

METHOD AND DEVICE IN WIRELESS COMMUNICATION SYSTEM

[0001] The present invention relates to the field of wireless communication technology, and more specifically, to a method and a device in a wireless communication system.

[0002] 5G mobile communication technologies define broad frequency bands such that high transmission rates and new services are possible, and can be implemented not only in "Sub 6GHz" bands such as 3.5GHz, but also in "Above 6GHz" bands referred to as mmWave including 28GHz and 39GHz. In addition, it has been considered to implement 6G mobile communication technologies (referred to as Beyond 5G systems) in terahertz bands (for example, 95GHz to 3THz bands) in order to accomplish transmission rates fifty times faster than 5G mobile communication technologies and ultra-low latencies one-tenth of 5G mobile communication technologies.

[0003] At the beginning of the development of 5G mobile communication technologies, in order to support services and to satisfy performance requirements in connection with enhanced Mobile BroadBand (eMBB), Ultra Reliable Low Latency Communications (URLLC), and massive Machine-Type Communications (mMTC), there has been ongoing standardization regarding beamforming and massive MIMO for mitigating radio-wave path loss and increasing radio-wave transmission distances in mmWave, supporting numerologies (for example, operating multiple subcarrier spacings) for efficiently utilizing mmWave resources and dynamic operation of slot formats, initial access technologies for supporting multi-beam transmission and broadbands, definition and operation of BWP (BandWidth Part), new channel coding methods such as a LDPC (Low Density Parity Check) code for large amount of data transmission and a polar code for highly reliable transmission of control information, L2 pre-processing, and network slicing for providing a dedicated network specialized to a specific service.

[0004] Currently, there are ongoing discussions regarding improvement and performance enhancement of initial 5G mobile communication technologies in view of services to be supported by 5G mobile communication technologies, and there has been physical layer standardization regarding technologies such as V2X (Vehicle-to-everything) for aiding driving determination by autonomous vehicles based on information regarding positions and states of vehicles transmitted by the vehicles and for enhancing user convenience, NR-U (New Radio Unlicensed) aimed at system operations conforming to various regulation-related requirements in unlicensed bands, NR UE Power Saving, Non-Terrestrial Network (NTN) which is UE-satellite direct communication for providing coverage in an area in which communication with terrestrial networks is unavailable, and positioning.

[0005] Moreover, there has been ongoing standardization in air interface architecture / protocol regarding technologies such as Industrial Internet of Things (IIoT) for supporting new services through interworking and convergence with other industries, IAB (Integrated Access and Backhaul) for providing a node for network service area expansion by supporting a wireless backhaul link and an access link in an integrated manner, mobility enhancement including conditional handover and DAPS (Dual Active Protocol Stack) handover, and two-step random access for simplifying random access procedures (2-step RACH for NR). There also has been ongoing standardization in system architecture / service regarding a 5G baseline architecture (for example, service based architecture or service based interface) for combining Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technologies, and Mobile Edge Computing (MEC) for receiving services based on UE positions.

[0006] As 5G mobile communication systems are commercialized, connected devices that have been exponentially increasing will be connected to communication networks, and it is accordingly expected that enhanced functions and performances of 5G mobile communication systems and integrated operations of connected devices will be necessary. To this end, new research is scheduled in connection with eXtended Reality (XR) for efficiently supporting AR (Augmented Reality), VR (Virtual Reality), MR (Mixed Reality) and the like, 5G performance improvement and complexity reduction by utilizing Artificial Intelligence (AI) and Machine Learning (ML), AI service support, metaverse service support, and drone communication.

[0007] Furthermore, such development of 5G mobile communication systems will serve as a basis for developing not only new waveforms for providing coverage in terahertz bands of 6G mobile communication technologies, multi-antenna transmission technologies such as Full Dimensional MIMO (FD-MIMO), array antennas and large-scale antennas, metamaterial-based lenses and antennas for improving coverage of terahertz band signals, high-dimensional space multiplexing technology using OAM (Orbital Angular Momentum), and RIS (Reconfigurable Intelligent Surface), but also full-duplex technology for increasing frequency efficiency of 6G mobile communication technologies and improving system networks, AI-based communication technology for implementing system optimization by utilizing satellites and AI (Artificial Intelligence) from the design stage and internalizing end-to-end AI support functions, and next-generation distributed computing technology for implementing services at levels of complexity exceeding the limit of UE operation capability by utilizing ultra-high-performance communication and computing resources.

[0008] In order to meet the increasing demand for wireless data communication services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or pre-5G communication systems. Therefore, 5G or pre-5G communication systems are also called "Beyond 4G networks" or "Post-LTE systems".

[0009] In order to achieve a higher data rate, 5G communication systems are implemented in higher frequency (millimeter, mmWave) bands, e.g., 60 GHz bands. In order to reduce propagation loss of radio waves and increase a transmission distance, technologies such as beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antenna, analog beamforming and large-scale antenna are discussed in 5G communication systems.

[0010] In addition, in 5G communication systems, developments of system network improvement are underway based on advanced small cell, cloud radio access network (RAN), ultra-dense network, device-to-device (D2D) communication, wireless backhaul, mobile network, cooperative communication, coordinated multi-points (CoMP), reception-end interference cancellation, etc.

[0011] In 5G systems, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC) as advanced coding modulation (ACM), and filter bank multicarrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technologies have been developed.

[0012] In the existing RFID technology, a contention-based access procedure is used between different tags. When multiple tags transmit uplink information on the same resource, a collision occurs, resulting in both tags being unable to access. The above collisions make the access delay of the system large, and how to enhance the access of tags is an urgent problem to be solved.

[0013] According to an embodiment of the present disclosure, there is provided a method performed by a user equipment (UE) in a wireless communication system including: receiving a first command related to access, wherein the first command includes a first value; transmitting first information based on the first value; receiving a third command related to access if first response information related to the first information is not received; and transmitting second information based on the third command and the first value, wherein the transmitting of the first information includes transmitting the first information in a first format and the transmitting of the second information includes transmitting the second information in a second format.

[0014] In some implementations, the second format is the same as or different from the first format.

[0015] In some implementations, the first information includes first temporary identity information and the second information includes second temporary identity information, and wherein the second temporary identity information is the same as or different from the first temporary identity information.

[0016] In some implementations, the first command includes at least one of: a first time; a first resource; a first offset; the first format; and a first length.

[0017] In some implementations, the first temporary identity information is related to the first length.

[0018] In some implementations, a resource occupied by the first information is related to at least one of: the first time, the first resource, and the first offset.

[0019] In some implementations, the third command is used to indicate the UE to initiate an access request within the first time indicated by the first command.

[0020] In some implementations, the third command includes at least one of: a second time, the second format, a second offset, a second resource, and a second length.

[0021] In some implementations, the second temporary identity information is related to the second length.

[0022] In some implementations, a resource occupied by the second information is related to at least one of: the second time, the second offset, and the second resource.

[0023] In some implementations, the first information and the second information include at least one of: a preamble, a midamble, a postamble, an indication sequence, wherein the indication sequence is related to a resource determined by the UE based on the first value.

[0024] In some implementations, the method further includes: receiving a second command; and transmitting the first information based on the first command and the second command, wherein the second command includes at least one of: a first index, a third resource, a third offset, the first format, and a first length.

[0025] In some implementations, the first format includes at least one of: a type of a first pilot sequence, a generation mode of the first temporary identity information, a first coding scheme, a second coding scheme, wherein the first coding scheme indicates a coding scheme of the first pilot sequence and a coding scheme of the first temporary identity information; or the first coding scheme indicates the coding scheme of the first temporary identity information; or the first coding scheme indicates the coding scheme of the first pilot sequence, and the second coding scheme indicates the coding scheme of the first temporary identity information; and wherein the second format includes at least one of: a type of a second pilot sequence, a generation mode of the second temporary identity information, a third coding scheme, a fourth coding scheme, wherein the third coding scheme indicates a coding scheme of the second pilot sequence and a coding scheme of the second temporary identity information; or the third coding scheme indicates the coding scheme of the second temporary identity information; or the third coding scheme indicates the coding scheme of the second pilot sequence, and the fourth coding scheme indicates the coding scheme of the second temporary identity information.

[0026] In some implementations, a resource occupied by the first information is related to at least one of: the first value, the first index, the third resource, and the third offset.

[0027] In some implementations, the method further includes: before a second duration after an end of a last time unit where a channel carrying the first information is located, if the first response information is not received, monitoring the third command.

[0028] In some implementations, the method further includes: after a first duration and before a second duration after an end of a last time unit where a channel carrying the first information is located, if the first response information is not received, monitoring the third command.

[0029] In some implementations, the method further includes: if the first response information is not received, monitoring at least one of: the second command, the third command and a fourth command, wherein the fourth command includes a second value.

[0030] In some implementations, the first response information includes at least one of: at least one response sub-information, and a number of response sub-information.

[0031] In some implementations, receiving no first response information includes one of: receiving no response information; and receiving the response information, and the response information not corresponding to the first information.

[0032] In some implementations, the method further includes: receiving the first response information related to the first information, and transmitting third information based on the first response information, wherein the third information includes UE identity information.

[0033] In some implementations, the method further includes: receiving second response information related to the second information; and transmitting third information based on the second response information, wherein the third information includes UE identity information.

[0034] In some implementations, the transmitting of the third information based on the second response information includes: monitoring a fourth command based on the second response information; and transmitting the third information based on the fourth command, wherein the fourth command includes second temporary identity information and a third time, and wherein a resource occupied by the third information is related to the third time.

[0035] In some implementations, the second response information includes at least one of: at least one response sub-information, a number of response sub-information, a fourth time, and a fifth coding scheme, wherein the third information is related to the fourth time and / or the fifth coding scheme.

[0036] According to an embodiment of the present disclosure, there is provided a method performed by a base station in a wireless communication system including: transmitting a first command related to access, wherein the first command includes a first value; receiving first information that is transmitted based on the first value; transmitting a third command related to access; and receiving second information that is transmitted based on the third command and the first value, wherein the first information is transmitted in a first format and the second information is transmitted in a second format.

[0037] In some implementations, the method further includes: transmitting a carrier wave switching command to a first node.

[0038] According to an embodiment of the present disclosure, there is provided a method performed by a first node in a wireless communication system including: transmitting a single-carrier on a first resource corresponding to a first command related to access; receiving a carrier wave switching command; and transmitting multiple single-carriers on a third resource corresponding to a second command related to access based on the carrier wave switching command.

[0039] According to an embodiment of the present disclosure, there is provided a user equipment (UE) in a wireless communication system including: a transceiver; and a controller coupled to the transceiver and configured to perform the aforementioned methods.

[0040] According to an embodiment of the present disclosure, there is provided a base station in a wireless communication system including: a transceiver; and a controller coupled to the transceiver and configured to perform the aforementioned methods.

[0041] According to an embodiment of the present disclosure, there is provided a first node in a wireless communication system including: a transceiver; and a controller coupled to the transceiver and configured to perform the aforementioned methods.

[0042] The invention provides a signal transmission method and a collision handling scheme for an IoT system, which enables collided tags to obtain a new access opportunity in a current inventory round, improves the access opportunity of the collided tags and reduces the access delay thereof.

[0043] In order to illustrate the technical schemes of the embodiments of the present disclosure more clearly, the drawings of the embodiments of the present disclosure will be briefly introduced below. Apparently, the drawings described below only refer to some embodiments of the present disclosure, and do not limit the disclosure. In the drawings:

[0044] FIG. 1 illustrates a schematic diagram of an example wireless network according to an embodiment of the present disclosure;

[0045] FIGs. 2a and 2b illustrate example wireless transmission and reception paths according to an embodiment of the present disclosure;

[0046] FIG. 3a illustrates an example UE according to an embodiment of the present disclosure;

[0047] FIG. 3b illustrates an example gNB according to an embodiment of the present disclosure;

[0048] FIG. 4 illustrates a basic model of a radio frequency identification system according to an embodiment of the present disclosure;

[0049] FIG. 5 illustrates a flowchart of a method performed by a UE or a tag according to an embodiment of the present disclosure;

[0050] FIGS. 6a-6b illustrate diagrams of transmitting downlink commands according to an embodiment of the present disclosure;

[0051] FIGS. 7a-7c illustrate diagrams of positions where re-access commands are transmitted according to an embodiment of the present disclosure;

[0052] FIG. 8 illustrates a diagram of transmitting a downlink command according to an embodiment of the present disclosure;

[0053] FIG. 9 illustrates a diagram of a tag uplink signal according to an embodiment of the present disclosure;

[0054] FIGS. 10a-10b illustrate diagrams of transmitting uplink data according to an embodiment of the present disclosure;

[0055] FIGS. 11a-11b illustrate diagrams of response information according to an embodiment of the present disclosure;

[0056] FIGS. 12a-12c illustrate diagrams of transmitting identity information according to an embodiment of the present disclosure;

[0057] FIG. 13 illustrates a flowchart of a method performed by a base station according to an embodiment of the present disclosure;

[0058] FIG. 14 illustrates a flowchart of a method performed by a node according to an embodiment of the present disclosure; and

[0059] FIG. 15 illustrates a block diagram of a device according to an embodiment of the present disclosure.

[0060] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the present disclosure as defined by the claims and their equivalents. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

[0061] The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration purpose only and not for the purpose of limiting the present disclosure as defined by the appended claims and their equivalents.

[0062] It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component surface" includes reference to one or more of such surfaces.

[0063] The term "include" or "may include" refers to the existence of a corresponding disclosed function, operation or component which can be used in various embodiments of the present disclosure and does not limit one or more additional functions, operations, or components. The terms such as "include" and / or "have" may be construed to denote a certain characteristic, number, step, operation, constituent element, component or a combination thereof, but may not be construed to exclude the existence of or a possibility of addition of one or more other characteristics, numbers, steps, operations, constituent elements, components or combinations thereof.

[0064] The term "or" used in various embodiments of the present disclosure includes any or all of combinations of listed words. For example, the expression "A or B" may include A, may include B, or may include both A and B.

[0065] Unless defined differently, all terms used herein, which include technical terminologies or scientific terminologies, have the same meaning as that understood by a person skilled in the art to which the present disclosure belongs. Such terms as those defined in a generally used dictionary are to be interpreted to have the meanings equal to the contextual meanings in the relevant field of art, and are not to be interpreted to have ideal or excessively formal meanings unless clearly defined in the present disclosure.

[0066] FIG. 1 illustrates an example wireless network 100 according to an embodiment of the present disclosure. The embodiment of the wireless network 100 shown in FIG. 1 is for illustration only. Other embodiments of the wireless network 100 can be used without departing from the scope of the present disclosure.

[0067] The wireless network 100 includes a gNodeB (gNB) 101, a gNB 102, and a gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one Internet Protocol (IP) network 130, such as the Internet, a private IP network, or other data networks.

[0068] Depending on a type of the network, other well-known terms such as "base station" or "access point" can be used instead of "gNodeB" or "gNB". For convenience, the terms "gNodeB" and "gNB" are used in this patent document to refer to network infrastructure components that provide wireless access for remote terminals. And, depending on the type of the network, other well-known terms such as "mobile station", "user station", "remote terminal", "wireless terminal" or "user apparatus" can be used instead of "user equipment" or "UE". For convenience, the terms "user equipment" and "UE" are used in this patent document to refer to remote wireless devices that wirelessly access the gNB, no matter whether the UE is a mobile device (such as a mobile phone or a smart phone) or a fixed device (such as a desktop computer or a vending machine).

[0069] gNB 102 provides wireless broadband access to the network 130 for a first plurality of User Equipments (UEs) within a coverage area 120 of gNB 102. The first plurality of UEs include a UE 111, which may be located in a Small Business (SB); a UE 112, which may be located in an enterprise (E); a UE 113, which may be located in a WiFi Hotspot (HS); a UE 114, which may be located in a first residence (R); a UE 115, which may be located in a second residence (R); a UE 116, which may be a mobile device (M), such as a cellular phone, a wireless laptop computer, a wireless PDA, etc. GNB 103 provides wireless broadband access to network 130 for a second plurality of UEs within a coverage area 125 of gNB 103. The second plurality of UEs include a UE 115 and a UE 116. In some embodiments, one or more of gNBs 101-103 can communicate with each other and with UEs 111-116 using 5G, Long Term Evolution (LTE), LTE-A, WiMAX or other advanced wireless communication technologies.

[0070] The dashed lines show approximate ranges of the coverage areas 120 and 125, and the ranges are shown as approximate circles merely for illustration and explanation purposes. It should be clearly understood that the coverage areas associated with the gNBs, such as the coverage areas 120 and 125, may have other shapes, including irregular shapes, depending on configurations of the gNBs and changes in the radio environment associated with natural obstacles and man-made obstacles.

[0071] As will be described in more detail below, one or more of gNB 101, gNB 102, and gNB 103 include a 2D antenna array as described in embodiments of the present disclosure. In some embodiments, one or more of gNB 101, gNB 102, and gNB 103 support codebook designs and structures for systems with 2D antenna arrays.

[0072] Although FIG. 1 illustrates an example of the wireless network 100, various changes can be made to FIG. 1. The wireless network 100 can include any number of gNBs and any number of UEs in any suitable arrangement, for example. Furthermore, gNB 101 can directly communicate with any number of UEs and provide wireless broadband access to the network 130 for those UEs. Similarly, each gNB 102-103 can directly communicate with the network 130 and provide direct wireless broadband access to the network 130 for the UEs. In addition, gNB 101, 102 and / or 103 can provide access to other or additional external networks, such as external telephone networks or other types of data networks.

[0073] FIGs. 2a and 2b illustrate example wireless transmission and reception paths according to the present disclosure. In the following description, the transmission path 200 can be described as being implemented in a gNB, such as gNB 102, and the reception path 250 can be described as being implemented in a UE, such as UE 116. However, it should be understood that the reception path 250 can be implemented in a gNB and the transmission path 200 can be implemented in a UE. In some embodiments, the reception path 250 is configured to support codebook designs and structures for systems with 2D antenna arrays as described in embodiments of the present disclosure.

[0074] The transmission path 200 includes a channel coding and modulation block 205, a Serial-to-Parallel (S-to-P) block 210, a size N Inverse Fast Fourier Transform (IFFT) block 215, a Parallel-to-Serial (P-to-S) block 220, a cyclic prefix addition block 225, and an up-converter (UC) 230. The reception path 250 includes a down-converter (DC) 255, a cyclic prefix removal block 260, a Serial-to-Parallel (S-to-P) block 265, a size N Fast Fourier Transform (FFT) block 270, a Parallel-to-Serial (P-to-S) block 275, and a channel decoding and demodulation block 280.

[0075] In the transmission path 200, the channel coding and modulation block 205 receives a set of information bits, applies coding (such as Low Density Parity Check (LDPC) coding), and modulates the input bits (such as using Quadrature Phase Shift Keying (QPSK) or Quadrature Amplitude Modulation (QAM)) to generate a sequence of frequency-domain modulated symbols. The Serial-to-Parallel (S-to-P) block 210 converts (such as demultiplexes) serial modulated symbols into parallel data to generate N parallel symbol streams, where N is a size of the IFFT / FFT used in gNB 102 and UE 116. The size N IFFT block 215 performs IFFT operations on the N parallel symbol streams to generate a time-domain output signal. The Parallel-to-Serial block 220 converts (such as multiplexes) parallel time-domain output symbols from the Size N IFFT block 215 to generate a serial time-domain signal. The cyclic prefix addition block 225 inserts a cyclic prefix into the time-domain signal. The up-converter 230 modulates (such as up-converts) the output of the cyclic prefix addition block 225 to an RF frequency for transmission via a wireless channel. The signal can also be filtered at a baseband before switching to the RF frequency.

[0076] The RF signal transmitted from gNB 102 arrives at UE 116 after passing through the wireless channel, and operations in reverse to those at gNB 102 are performed at UE 116. The down-converter 255 down-converts the received signal to a baseband frequency, and the cyclic prefix removal block 260 removes the cyclic prefix to generate a serial time-domain baseband signal. The Serial-to-Parallel block 265 converts the time-domain baseband signal into a parallel time-domain signal. The Size N FFT block 270 performs an FFT algorithm to generate N parallel frequency-domain signals. The Parallel-to-Serial block 275 converts the parallel frequency-domain signal into a sequence of modulated data symbols. The channel decoding and demodulation block 280 demodulates and decodes the modulated symbols to recover the original input data stream.

[0077] Each of gNBs 101-103 may implement a transmission path 200 similar to that for transmitting to UEs 111-116 in the downlink, and may implement a reception path 250 similar to that for receiving from UEs 111-116 in the uplink. Similarly, each of UEs 111-116 may implement a transmission path 200 for transmitting to gNBs 101-103 in the uplink, and may implement a reception path 250 for receiving from gNBs 101-103 in the downlink.

[0078] Each of the components in FIGs. 2a and 2b can be implemented using only hardware, or using a combination of hardware and software / firmware. As a specific example, at least some of the components in FIGs. 2a and 2b may be implemented in software, while other components may be implemented in configurable hardware or a combination of software and configurable hardware. For example, the FFT block 270 and IFFT block 215 may be implemented as configurable software algorithms, in which the value of the size N may be modified according to the implementation.

[0079] Furthermore, although described as using FFT and IFFT, this is only illustrative and should not be interpreted as limiting the scope of the present disclosure. Other types of transforms can be used, such as Discrete Fourier transform (DFT) and Inverse Discrete Fourier Transform (IDFT) functions. It should be understood that for DFT and IDFT functions, the value of variable N may be any integer (such as 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of variable N may be any integer which is a power of 2 (such as 1, 2, 4, 8, 16, etc.).

[0080] Although FIGs. 2a and 2b illustrate examples of wireless transmission and reception paths, various changes may be made to FIGs. 2a and 2b. For example, various components in FIGs. 2a and 2b can be combined, further subdivided or omitted, and additional components can be added according to specific requirements. Furthermore, FIGs. 2a and 2b are intended to illustrate examples of types of transmission and reception paths that can be used in a wireless network. Any other suitable architecture can be used to support wireless communication in a wireless network.

[0081] FIG. 3a illustrates an example UE 116 according to the present disclosure. The embodiment of UE 116 shown in FIG. 3a is for illustration only, and UEs 111-115 of FIG. 1 can have the same or similar configuration. However, a UE has various configurations, and FIG. 3a does not limit the scope of the present disclosure to any specific implementation of the UE.

[0082] UE 116 includes an antenna 305, a radio frequency (RF) transceiver 310, a transmission (TX) processing circuit 315, a microphone 320, and a reception (RX) processing circuit 325. UE 116 also includes a speaker 330, a processor / controller 340, an input / output (I / O) interface 345, an input device(s) 350, a display 355, and a memory 360. The memory 360 includes an operating system (OS) 361 and one or more applications 362.

[0083] The RF transceiver 310 receives an incoming RF signal transmitted by a gNB of the wireless network 100 from the antenna 305. The RF transceiver 310 down-converts the incoming RF signal to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is transmitted to the RX processing circuit 325, where the RX processing circuit 325 generates a processed baseband signal by filtering, decoding and / or digitizing the baseband or IF signal. The RX processing circuit 325 transmits the processed baseband signal to speaker 330 (such as for voice data) or to processor / controller 340 for further processing (such as for web browsing data).

[0084] The TX processing circuit 315 receives analog or digital voice data from microphone 320 or other outgoing baseband data (such as network data, email or interactive video game data) from processor / controller 340. The TX processing circuit 315 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The RF transceiver 310 receives the outgoing processed baseband or IF signal from the TX processing circuit 315 and up-converts the baseband or IF signal into an RF signal transmitted via the antenna 305.

[0085] The processor / controller 340 can include one or more processors or other processing devices and execute an OS 361 stored in the memory 360 in order to control the overall operation of UE 116. For example, the processor / controller 340 can control the reception of forward channel signals and the transmission of backward channel signals through the RF transceiver 310, the RX processing circuit 325 and the TX processing circuit 315 according to well-known principles. In some embodiments, the processor / controller 340 includes at least one microprocessor or microcontroller.

[0086] The processor / controller 340 is also capable of executing other processes and programs residing in the memory 360, such as operations for channel quality measurement and reporting for systems with 2D antenna arrays as described in embodiments of the present disclosure. The processor / controller 340 can move data into or out of the memory 360 as required by an execution process. In some embodiments, the processor / controller 340 is configured to execute the application 362 based on the OS 361 or in response to signals received from the gNB or the operator. The processor / controller 340 is also coupled to an I / O interface 345, where the I / O interface 345 provides UE 116 with the ability to connect to other devices such as laptop computers and handheld computers. I / O interface 345 is a communication path between these accessories and the processor / controller 340.

[0087] The processor / controller 340 is also coupled to the input device(s) 350 and the display 355. An operator of UE 116 can input data into UE 116 using the input device(s) 350. The display 355 may be a liquid crystal display or other display capable of presenting text and / or at least limited graphics (such as from a website). The memory 360 is coupled to the processor / controller 340. A part of the memory 360 can include a random access memory (RAM), while another part of the memory 360 can include a flash memory or other read-only memory (ROM).

[0088] Although FIG. 3a illustrates an example of UE 116, various changes can be made to FIG. 3a. For example, various components in FIG. 3a can be combined, further subdivided or omitted, and additional components can be added according to specific requirements. As a specific example, the processor / controller 340 can be divided into a plurality of processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Furthermore, although FIG. 3a illustrates that the UE 116 is configured as a mobile phone or a smart phone, UEs can be configured to operate as other types of mobile or fixed devices.

[0089] FIG. 3b illustrates an example gNB 102 according to the present disclosure. The embodiment of gNB 102 shown in FIG. 3b is for illustration only, and other gNBs of FIG. 1 can have the same or similar configuration. However, a gNB has various configurations, and FIG. 3b does not limit the scope of the present disclosure to any specific implementation of a gNB. It should be noted that gNB 101 and gNB 103 can include the same or similar structures as gNB 102.

[0090] As shown in FIG. 3b, gNB 102 includes a plurality of antennas 370a-370n, a plurality of RF transceivers 372a-372n, a transmission (TX) processing circuit 374, and a reception (RX) processing circuit 376. In certain embodiments, one or more of the plurality of antennas 370a-370n include a 2D antenna array. gNB 102 also includes a controller / processor 378, a memory 380, and a backhaul or network interface 382.

[0091] RF transceivers 372a-372n receive an incoming RF signal from antennas 370a-370n, such as a signal transmitted by UEs or other gNBs. RF transceivers 372a-372n down-convert the incoming RF signal to generate an IF or baseband signal. The IF or baseband signal is transmitted to the RX processing circuit 376, where the RX processing circuit 376 generates a processed baseband signal by filtering, decoding and / or digitizing the baseband or IF signal. RX processing circuit 376 transmits the processed baseband signal to controller / processor 378 for further processing.

[0092] The TX processing circuit 374 receives analog or digital data (such as voice data, network data, email or interactive video game data) from the controller / processor 378. TX processing circuit 374 encodes, multiplexes and / or digitizes outgoing baseband data to generate a processed baseband or IF signal. RF transceivers 372a-372n receive the outgoing processed baseband or IF signal from TX processing circuit 374 and up-convert the baseband or IF signal into an RF signal transmitted via antennas 370a-370n.

[0093] The controller / processor 378 can include one or more processors or other processing devices that control the overall operation of gNB 102. For example, the controller / processor 378 can control the reception of forward channel signals and the transmission of backward channel signals through the RF transceivers 372a-372n, the RX processing circuit 376 and the TX processing circuit 374 according to well-known principles. The controller / processor 378 can also support additional functions, such as higher-level wireless communication functions. For example, the controller / processor 378 can perform a Blind Interference Sensing (BIS) process such as that performed through a BIS algorithm, and decode a received signal from which an interference signal is subtracted. A controller / processor 378 may support any of a variety of other functions in gNB 102. In some embodiments, the controller / processor 378 includes at least one microprocessor or microcontroller.

[0094] The controller / processor 378 is also capable of executing programs and other processes residing in the memory 380, such as a basic OS. The controller / processor 378 can also support channel quality measurement and reporting for systems with 2D antenna arrays as described in embodiments of the present disclosure. In some embodiments, the controller / processor 378 supports communication between entities such as web RTCs. The controller / processor 378 can move data into or out of the memory 380 as required by an execution process.

[0095] The controller / processor 378 is also coupled to the backhaul or network interface 382. The backhaul or network interface 382 allows gNB 102 to communicate with other devices or systems through a backhaul connection or through a network. The backhaul or network interface 382 can support communication over any suitable wired or wireless connection(s). For example, when gNB 102 is implemented as a part of a cellular communication system, such as a cellular communication system supporting 5G or new radio access technology or NR, LTE or LTE-A, the backhaul or network interface 382 can allow gNB 102 to communicate with other gNBs through wired or wireless backhaul connections. When gNB 102 is implemented as an access point, the backhaul or network interface 382 can allow gNB 102 to communicate with a larger network, such as the Internet, through a wired or wireless local area network or through a wired or wireless connection. The backhaul or network interface 382 includes any suitable structure that supports communication through a wired or wireless connection, such as an Ethernet or an RF transceiver.

[0096] The memory 380 is coupled to the controller / processor 378. A part of the memory 380 can include an RAM, while another part of the memory 380 can include a flash memory or other ROMs. In certain embodiments, a plurality of instructions, such as the BIS algorithm, are stored in the memory. The plurality of instructions are configured to cause the controller / processor 378 to execute the BIS process and decode the received signal after subtracting at least one interference signal determined by the BIS algorithm.

[0097] As will be described in more detail below, the transmission and reception paths of gNB 102 (implemented using RF transceivers 372a-372n, TX processing circuit 374 and / or RX processing circuit 376) support aggregated communication with FDD cells and TDD cells.

[0098] Although FIG. 3b illustrates an example of gNB 102, various changes may be made to FIG. 3b. For example, gNB 102 can include any number of each component shown in FIG. 3a. As a specific example, the access point can include many backhaul or network interfaces 382, and the controller / processor 378 can support routing functions to route data between different network addresses. As another specific example, although shown as including a single instance of the TX processing circuit 374 and a single instance of the RX processing circuit 376, gNB 102 can include multiple instances of each (such as one for each RF transceiver).

[0099] In order to make the purpose, technical schemes and advantages of the present application clearer, the implementations of the present application will be further described in detail with reference to the accompanying drawings.

[0100] The text and drawings are provided as examples only to help readers understand the present disclosure. They are not intended and should not be interpreted as limiting the scope of the present disclosure in any way. Although certain embodiments and examples have been provided, based on the content disclosed herein, it is obvious to those skilled in the art that modifications to the illustrated embodiments and examples can be made without departing from the scope of the present disclosure.

[0101] The Internet of Things (IoT) is a network of physical objects (so-called "things") that are embedded with sensors, software, and other technologies so that connections can be established with other devices and systems and data can be exchanged over the Internet. There are a wide variety of IoT devices, ranging from ordinary household articles to complex industrial appliances. In the past few years, the Internet of Things has become one of the very important technologies of the 21st century. Today, we can connect a variety of everyday objects to the Internet through embedded devices, enabling seamless communication between people, processes and objects. These everyday objects include kitchen appliances, cars, thermostats, and baby monitors. With low-cost computing, cloud, big data, analytics and mobile technologies, we can now make objects automatically collect and share data with as little human intervention as possible. In this hyper-connected world, digital systems can record, monitor, and adjust every interaction between connected objects. The physical world and the digital world began to converge and cooperate with each other.

[0102] The development of the Internet of Things can benefit various industries, such as manufacturing, automotive, logistics and transportation, retail, public sector, healthcare, etc. Transportation and logistics systems can benefit from a variety of IoT applications. With IoT sensor data, businesses can re-route fleets of cars, trucks, ships, and trains based on weather conditions, vehicle availability, or driver attendance. The cargo itself can also be equipped with sensors for tracking and temperature-controlled monitoring. The catering, floral and pharmaceutical industries, which typically need to transport temperature-sensitive goods, stand to benefit greatly from IoT surveillance applications. These applications can raise an alarm when the temperature rises or falls to the point that it threatens the product. IoT applications help retail businesses manage inventory, improve customer experience, optimize supply chains and reduce operating costs. For example, smart shelves equipped with weight sensors can collect RFID-based information and transmit the data to the IoT platform, which can automatically monitor inventory and trigger alarms when goods are running low.

[0103] Radio Frequency Identification (RFID) is a communication technology that can identify specific targets and read and write related data through radio signals without establishing mechanical or optical contact between the identification system and specific targets. The basic model of a typical radio frequency identification system is shown in FIG. 4. An electronic tag is also called a radio frequency tag, transponder, and data carrier; a reader is also called a radio frequency identification device, a readout device, a scanner, a communicator, and a reader-writer (depending on whether the electronic tag can wirelessly rewrite data). Spatial (contactless) coupling of radio frequency signals is realized between the electronic tag and the reader through a coupling element, and energy transmission and data exchange are realized in the coupling channel according to the timing relationship.

[0104] In the existing RFID technology, a contention-based access procedure is used between different tags. When multiple tags transmit uplink information on the same resource, a collision occurs, resulting in both tags being unable to access. The above collisions make the access delay of the system large, and how to enhance the access of tags is an urgent problem to be solved.

[0105] The invention provides a signal transmission method and a collision handling scheme for an IoT system, which enables collided tags to obtain a new access opportunity in a current inventory round, improves the access opportunity of the collided tags and reduces the access delay thereof.

[0106] FIG. 5 illustrates a flowchart of a method performed by a UE / tag according to an embodiment of the present disclosure. Specifically, at step 501, a first command related to access is received, where the first command includes a first value. At step 502, first information is transmitted based on the first value. In step 503, if first response information related to the first information is not received, a third command related to access is received. At step 504, second information is transmitted based on the third command and the first value. In some implementations, the transmitting of the first information includes transmitting the first information in a first format, and the transmitting of the second information includes transmitting the second information in a second format.

[0107] Specifically, the method according to an embodiment of the present disclosure includes acquiring an inventory command transmitted by a base station, and transmitting first temporary identity information according to the first format based on information related to an inventory round determined by the inventory command. The information related to the inventory round may be a value Q for indicating the number of slots in the inventory round or the number of inventory repetition commands in the inventory round; based on the number of slots in the inventory round or the number of inventory repetition commands in the inventory round, a period for inventory corresponding to the inventory command may be further determined.

[0108] The method according to an embodiment of the present disclosure further includes monitoring response information related to the first temporary identity information, and monitoring a re-access command if no valid response information is received. The re-access command indicates the UE to initiate an access request again.

[0109] The method according to an embodiment of the present disclosure further includes acquiring a re-access command transmitted by the base station, and transmitting second temporary identity information according to the second format based on the re-access command.

[0110] In some implementations, the UE determines time resources for transmitting the first information based on the inventory command. In some implementations, the UE determines time resources for transmitting the second information based on the inventory command and the re-access command indication, or optionally, the inventory repetition command.

[0111] In some implementations, the first command indicates a period or an inventory round. The first command may indicate an inventory round by indicating a time corresponding to the inventory round, or indicating a number of second commands corresponding to the inventory round. The first command may indicate a period by indicating a number Q, and determining the period indicated by the first command based on Q and the duration of a single time window, where Q represents the number of time windows, which may be determined by higher layer signaling or by the first command.

[0112] In some implementations, the UE receives a downlink inventory command (Command1) transmitted by a control node (e.g., a reader), as shown in FIG. 6a, and determines time-domain resources for data transmission based on Command1. For example, Command1 indicates the UE to transmit uplink data immediately after receiving Command1. For another example, Command1 includes a parameter Q indicating the number of inventory slots, and the UE generates a random number between 0 and Q-1 according to the parameter Q, and transmits uplink data if the generated random number is 0. For another example, Command1 includes a parameter Q indicating a number of slots, and the UE generates a random number between 1 and Q according to the parameter Q, and transmits uplink data if the generated random number is 1. In the inventory scenario, each Command1 corresponds to an inventory round.

[0113] In some implementations, the UE receives a downlink inventory command (Command1) and a downlink inventory repetition command (Command2) transmitted by a control node (e.g., a reader), respectively, as shown in FIG. 6b, and determines time-domain resources for data transmission based on the downlink command Command1 and the downlink command Command2. For example, Command 1 includes a parameter Q indicating a number of slots, and Command 2 includes a parameter indicating a slot index. The UE generates a random number between 0 to Q-1 (or 1 to Q) according to the parameter Q, transmits uplink data when the generated random number is 0 (or 1), otherwise monitors Command2, and transmits uplink data when the value of the parameter indicating the slot index in the received Command2 is equal to the generated random number. The beneficial effect of this design is that the reader can indicate qualified tags to perform uplink access, and the collision probability of tags in uplink access is reduced.

[0114] In some implementations, the UE receives a downlink inventory command (Command1), a downlink inventory repetition command (Command2), and a re-access command (Command3) transmitted by a control node (e.g., a reader), respectively, and jointly determines time-domain resources for data transmission based on Command1, Command2, and Command3. For example, the UE receives Command1 and Command2, where Command1 includes a parameter Q indicating a number of slots, and Command2 includes a parameter indicating a slot index. When the UE determines the time-domain resource of the uplink data according to Command1 and Command2 and transmits the uplink data, and does not receive acknowledgement information (for example, ACK) transmitted by the reader within a period (for example, T2) after the end of the transmission, or does not receive the valid acknowledgement information, the UE changes a built-in parameter state for indicating whether a collision occurs (for example, setting 0 to 1 or setting 1 to 0), and performs monitoring of Command3. The UE jointly determines a new uplink transmission time-domain resource based on Command3 and a built-in parameter state for indicating whether a collision occurs.

[0115] In some implementations, one Command1 may correspond to one or more Command2s, for example, one Command1 corresponds to Q-1 Command2s, creating Q slots (physically meaning, Q uplink transmission occasions) for the tag. The role of Command3 is collision handling, which can create one or more new uplink transmission occasions for tags with uplink collisions, thereby achieving lower latency when accessing massive tags. Optionally, one Command1 may correspond to one or more Command3s, and the position of Command3 may be after all Command2s, as shown in FIG. 7a, or after any idle Command2s, as shown in FIG. 7b, or after colliding Command2s, as shown in FIG. 7c. The physical meaning of the idle Command2 is that when base station does not receive a valid uplink signal within a certain period after transmitting Command2, the Command2 is defined as idle Command2, indicating that there is no tag access in the uplink transmission occasion determined by the current Command2. When a collision between tags occurs within the time range corresponding to the current Command1, the base station can transmit Command3 after idle Command2 to create a new uplink transmission occasion for the collided tags. The physical meaning of the collision Command2 is that when base station detects an uplink collision after Command2, the Command2 is defined as the collision Command2, and the base station may transmit Command3 after detecting the uplink collision, indicating the UE that has tried to access under the indication of the Command2 but failed to access successfully to access again. The beneficial effect of this design is that the tag that collides within the time range corresponding to Command1 and fails to access successfully can obtain a new access opportunity nearby, thus reducing the delay of tag access.

[0116] In some implementations, the UE receives a downlink inventory command (Command1) and a re-access command (Command3) transmitted by a control node (e.g., a reader), respectively, as shown in FIG. 8, and jointly determines time-domain resources for data transmission based on Command1 and Command3. For example, the UE determines the value of Q according to Command1, indicates the UE to transmit uplink information after Command1 with a certain probability (for example, ), monitors Command3 when the UE does not receive valid response information after transmitting the uplink information, determines a coding scheme and a transmission time of the second information based on Command3, and transmits the second information at the corresponding time.

[0117] In some implementations, the inventory command may further include at least one of:

[0118] a parameter indicating a duration corresponding to a current inventory round,

[0119] a parameter indicating a physical resource occupied by the first information,

[0120] a parameter indicating a relationship between a physical resource for transmitting the first information and a physical resource occupied by the inventory command,

[0121] a parameter indicating a first format,

[0122] a parameter indicating a length of the temporary identity information,

[0123] a parameter indicating a UE identity,

[0124] a parameter indicating an inventory range.

[0125] In some implementations, the UE may, based on the inventory command, obtain at least one of:

[0126] the duration corresponding to the current inventory round, the physical resource occupied by the first temporary identity information, the relationship between the physical resource for transmitting the first temporary identity information and the physical resource occupied by the inventory command, the first format, the parameter indicating the length of the temporary identity information, the parameter indicating the UE identity, and the parameter indicating the inventory range.

[0127] The physical meaning of the duration corresponding to the current inventory round is a length of time occupied by the current inventory round. In an implementation, an inventory repetition command is defined, one inventory command may correspond to one or more inventory repetition commands, and the physical meaning of the duration corresponding to the current inventory round may be related to the number of inventory repetition commands corresponding to the current inventory round. For example, when the parameter indicating the duration corresponding to the current inventory round in the inventory command is Q, it means that the number of corresponding inventory commands in the current inventory round is Q-1. For another example, if the parameter indicating the duration corresponding to the current inventory round in the inventory command is Q, it indicates that the number of corresponding inventory commands in the current inventory round is Q. In an implementation, the physical resource occupied by the first information may be a time resource, for example, if one inventory command corresponds to Q inventory repetition commands, the inventory command may indicate the UE to transmit uplink information after the n-th inventory repetition command, where . In an implementation, an inventory command includes a relationship between the physical resource occupied by the inventory command and the physical resource for transmitting the first information, for example, the transmission time of the first information should be after a duration of T1 after the end of the receiving of the inventory command by the UE. In some implementations, the resource occupied by the first information is related to a first offset, for example, the first offset indicates a time offset between the resource occupied by the first information and the first command, and the UE determines a start position of the resource occupied by the first information based on the end time of the first command and the first offset. In some implementations, the resource occupied by the first information is related to the first resource, for example, if the first resource indicates a period of resources (or a time-frequency resource), the UE transmits the first information on the first resource. In some implementations, the resource occupied by the first information is related to the duration corresponding to the current inventory round. For example, if the first time is included in the first information, indicating the current inventory round, the resource occupied by the first information should be included in the first time. In some implementations, the UE determines the length of the first temporary identity information based on a parameter indicating the length of the temporary identity information. For example, if the first length K is included in the first command, the UE determines that the length of the first temporary identity information is K bits based on the first length.

[0128] In some implementations, the inventory repetition command may further include at least one of:

[0129] a parameter indicating an index corresponding to the inventory repetition command,

[0130] a parameter indicating a physical resource occupied by the first information,

[0131] a parameter indicating a relationship (time offset) between a physical resource for transmitting the first information and a physical resource occupied by the inventory command,

[0132] a parameter indicating a first format,

[0133] a parameter indicating a number of transmissions of the first information,

[0134] a parameter indicating a length of temporary identity information.

[0135] In some implementations, the inventory command indicates that the number of slots in the current inventory process is Q, and then the inventory command corresponds to Q-1 inventory repetition commands. In some implementations, the inventory command indicates that the number of slots in the current inventory process is Q, and then the inventory command corresponds to Q inventory commands. In some implementations, inventory repetition commands including the same slot index may be transmitted repeatedly. For example, if the inventory command indicates that the number of slots in the current inventory process is Q, the parameter indicating the slot index in the first and second inventory repetition commands may be 1, and the parameter indicating the slot index in the second and third inventory repetition commands may be 2. For another example, if the inventory command indicates that the number of slots in the current inventory process is Q, the parameter indicating the slot index in the first and second inventory repetition commands may be 0, and the parameter indicating the slot index in the second and third inventory repetition commands may be 1. In some implementations, the inventory repetition command includes a relationship between the physical resource occupied by the inventory repetition command and the physical resource for transmitting the first information, for example, the transmission time of the first information should be after a duration of T4 after the end of the receiving of the inventory repetition command by the UE.

[0136] In some implementations, the resource occupied by the first information may be related to the value of Q. In some implementations, the resource occupied by the first information may be related to an index corresponding to the inventory repetition command. In some implementations, the resource occupied by the first information may be related to the physical resource occupied by the first information. In some implementations, the resource occupied by the first information may be related to a time offset between the physical resource for transmitting the first information and the physical resource occupied by the inventory command.

[0137] In some implementations, the re-access command may further include at least one of:

[0138] a parameter indicating a second format,

[0139] a parameter indicating a transmission time of the second information,

[0140] a parameter indicating an offset between the transmission time of the second information and the re-access command,

[0141] a parameter indicating a period of resources,

[0142] a parameter indicating a coding scheme,

[0143] a parameter indicating a number of transmissions of the second information,

[0144] a parameter indicating a transmit power of the second information,

[0145] a parameter indicating a length of the second temporary identity information,

[0146] a parameter indicating a generation mode of the temporary identity information.

[0147] In some implementations, the re-access command includes a bit indicating the second format. The bit of 0 indicates that a normal preamble (e.g., a preamble that has not been spread in the time domain) is used, and the bit of 1 indicates that a special preamble (e.g., a preamble that has been spread in the time domain) is used. In some implementations, the re-access command includes a bit indicating the transmission time of the second information, for example, the bit of 0 indicates an interval of T2 between the second information and the re-access command, and the bit of 1 indicates an interval of T2+T3 between the second information and the re-access command. In some implementations, the re-access command indicates that one or more bits are included to indicate the coding scheme, for example, two bits indicate whether to spread and the length of the spreading code, for example, 00 indicates no spreading, 01 indicates spreading with a spreading code of a length of 4, 10 indicates spreading with a spreading code of a length of 8, and 11 indicates spreading with a spreading code of a length of 16. For another example, two bits are included to indicate whether subcarrier modulation is used and parameters for subcarrier modulation, for example, 00 indicates no subcarrier modulation, 01 indicates subcarrier modulation with a Miller code having a parameter of 2, 10 indicates subcarrier modulation with a Miller code having a parameter of 4, and 11 indicates subcarrier modulation with a Miller code having a parameter of 8. In some implementations, the re-access command includes a bit indicating the generation mode of the temporary identity information, for example, the bit of 0 indicates that the temporary identity information is represented by a 16-bit random sequence, and bit 1 indicates that the temporary identity information is represented by a 32-bit random sequence. In some implementations, the re-access command includes a bit indicating the number of transmissions of the second information, for example, the bit of 0 indicates that the number of transmissions of the second information is 1, and the bit of 1 indicates that the number of transmissions of the second information is 2. In some implementations, a parameter for indicating tag transmit power control may also be included in the re-access command. For example, the re-access command includes one bit, and when the value is 0, it indicates that the transmit power of the second information is the same as that of the first information, and when the value is 1, it indicates that the transmit power of the second information is dB higher than that of the transmit power of the first information, where may be a value predefined according to the protocol. Optionally, the re-access command may be obtained by changing or adding at least one bit on the basis of the inventory repetition command. For example, compared to the inventory repetition command, the re-access command adds one bit to indicate whether at least one bit of the second information (e.g., temporary identity information) is transmitted by spreading. In some implementations, the resource occupied by the second information is related to a second offset, e.g., the second offset indicates a time offset between the resource occupied by the second information and the third command, and the UE determines a start position of the resource occupied by the second information based on the end time of the third command and the second offset. In some implementations, the resource occupied by the second information is related to the second resource, for example, if the second resource indicates a period of resources (or a time-frequency resource), the UE transmits the second information on the second resource. In some implementations, the resource occupied by the second information is related to the parameter indicating the transmission time of the second information. For example, the second information may include a second time indicating a time at which the second information is transmitted.

[0148] Optionally, the method of the present invention further includes monitoring a re-access command when valid response information is not received after a duration of after the end time of the transmission of the first information (for example, the end of the last time unit in which the channel carrying the first information is located). Optionally, the method of the present invention further includes monitoring a re-access command when valid response information is not received before a duration of after the end time of transmission of the first information. Receiving no valid response information may mean that the response information is not received, or the response information is received but the corresponding information does not correspond to the temporary identity information in the first information. In some implementations, the first information includes a first RN16, the UE monitors response information corresponding to the first information after transmitting the first information, and the UE receives the response information and decodes the response information to obtain a second RN16 corresponding to the response information, where the second RN16 has at least one bit different from the first RN16. In some implementations, the first information includes the first RN16, the UE monitors response information corresponding to the first information after transmitting the first information, and does not receive response information in a monitoring window corresponding to the first information. The monitoring window corresponding to the first information may be a period window from the end time of transmission of the first information, or may be a period window from a duration of T5 after the end time of transmission of the first information, where T5 is greater than 0. The end time of transmission of the first information may be an end position of the channel carrying the first information, for example, a last symbol occupied by the channel PDRCH carrying the first information, a last sampling point occupied by the channel PDRCH carrying the first information, a last bit occupied by the channel PDRCH carrying the first information, or a rising edge corresponding to the last bit occupied by the channel PDRCH carrying the first information.

[0149] In some implementations, if the response information is not received or valid response information is not received before a duration of after the end time of transmission of the first information, the UE is switched to a collided state. In some implementations, if the response information is not received or the valid response information is not received after a duration of and before a duration of after the end time of transmission of the first information, the UE is switched to the collided state.

[0150] In some implementations, the UE may have multiple states, for example, a ready state, an arbitration state, a collided state, and an acknowledgement state. In some implementations, the UE in the ready state receives the inventory command, transmits the first information, and monitors the response information related to the first information. If the valid response information is not received, the UE enters the collided state, and monitors the inventory command, the re-access command, the inventory repetition command, and the inventory adjustment command. In some implementations, the UE in the collided state transmits the second temporary identity information according to the second format after receiving the re-access command. In some implementations, after receiving the inventory command, the UE in the collided state generates a random number and assigns it to a slot counter. When the slot counter is 0, it enters a recovery state, otherwise, it enters the arbitration state. In some implementations, the UE in the collided state, after receiving the inventory repetition command, subtracts the slot counter parameter by one, enters the recovery state when the slot counter is 0, otherwise, enters the arbitration state. In some implementations, after receiving the inventory adjustment command, the UE in the collided state generates a random number according to the inventory adjustment command and assigns it to the slot counter. When the slot counter is 0, it enters the recovery state, otherwise, it enters the arbitration state. In some implementations, a UE in a state other than a collided state ignores the re-access command after receiving the re-access command.

[0151] In some implementations, the UE determines a physical resource for data transmission based on at least one downlink command, and transmits a tag uplink signal (first information / second information) on the physical resource. The tag uplink signal may be composed of a preamble sequence and an identify sequence, as shown in FIG. 9. The identify sequence is used to represent identity information of the tag, and the identify sequence may be temporary identity information or an Electronic Product Code. The preamble sequence may be a predefined 01-bit sequence, or may be a 01-bit sequence generated based on a downlink command; the identify sequence may be a random 01-bit sequence (for example, RN16) generated by the UE, may be a 01-bit sequence generated based on a downlink command, or may be a 01-bit sequence jointly determined based on the downlink command and the identity information of the UE. Optionally, the preamble sequence and the identify sequence may be consecutive, or there may be a certain interval, for example, an interval of 180 sampling points, where the interval portion may be filled with a consecutive high level or low level or high-low level arrangement in a fixed format. Specifically, the uplink signal may include a preamble sequence window and an identify sequence, where the preamble sequence window is a time resource corresponding to a fixed length / number of sampling points, the preamble sequence is in the preamble sequence window, and has an interval of from the start position of the preamble sequence window. When there are two UEs with time deviation in the channel, and the deviation is d, different user groups can be further separated according to the characteristic that the time interval between correlation peaks of the same group is fixed (for example, d). The beneficial effect of this design is that when multiple tags transmit uplink data in the same slot, it is helpful for the base station (or the reader) to identify the number of colliding users by using the time difference of arrival of preamble sequences of different tags and / or the time difference of arrival of identify sequences, thereby guiding the selection of parameters related to subsequent scheduling, improving the probability of successful access of tags, and reducing the access delay of tags.

[0152] The downlink signaling and the uplink information mentioned in the present invention may further include CRC.

[0153] The length and of the preamble sequence window may be related to downlink signaling. In some implementations, the length of the preamble sequence window may be related to the duration corresponding to the current inventory round, for example, if the duration corresponding to the current inventory round is the duration corresponding to Q inventory repetition commands, the length of the preamble sequence window may be QT, where T is the length of a preamble sequence (e.g., the number of sampling points, or milliseconds, or microseconds), and the length of the preamble sequence window may also be , where is the length corresponding to a symbol (e.g., the number of sampling points, or milliseconds, or microseconds). A symbol is a waveform corresponding to a 01-bit. In some implementations, the length of may be determined based on the value of Q in the inventory command, for example, if a random number k between 0 and Q-1 is obtained based on the value of Q, then the calculation method of may be . Optionally, the data sequence may further include a time division indication sequence (which may also be referred to as an indication sequence), and the indication sequence is used to assist base station in collision detection. The length and of a time division indication sequence window may be related to downlink signaling. In some implementations, the length of the time division indication sequence window may be related to the duration corresponding to the current inventory round, for example, if the duration corresponding to the current inventory round is the duration corresponding to Q inventory repetition commands, the length of the preamble sequence window may be QT, where T is the length of a preamble sequence (e.g., the number of sampling points, or milliseconds, or microseconds), and the length of the time division indication sequence window may also be , where is the length corresponding to a symbol (e.g., the number of sampling points, or milliseconds, or microseconds). In some implementations, the length of may be determined based on the value of Q in the inventory command, for example, if a random number k between 0 and Q-1 is obtained based on the value of Q, then the calculation method of may be . The beneficial effect of this design is that when multiple tags transmit uplink data in the same slot, it is helpful for the base station (or reader) to identify the number of colliding users by using the characteristics of signals in the time division indication sequence window, so as to guide the selection of parameters related to subsequent scheduling, improve the probability of successful tag access, and reduce the tag access delay.

[0154] Optionally, the first information and the second information may further include an intermediate pilot and / or an end pilot. For example, if the temporary identity information sequence of the tag is 16 bits, an intermediate pilot is inserted between the first 8 bits and the last 8 bits; for another example, if the temporary identity information sequence of the tag is 16 bits, an end pilot is inserted after the temporary identity sequence; for another example, if the temporary identity information sequence of the tag is 16 bits, an intermediate pilot is inserted between the first 8 bits and the last 8 bits, and an end pilot is inserted after the temporary identity sequence. The beneficial effect of this design is that the base station can perform uplink synchronization according to the pilots at different positions, and the accuracy of uplink data decoding is improved.

[0155] Optionally, the preamble sequence, the time division indication sequence, and the identify sequence may be transmitted by the same downlink signaling command or may be transmitted by different downlink signaling commands. In some implementations, the UE receives pre-inventory signaling (QueryPre), transmits a preamble sequence and a time division indication sequence, or transmits a spread preamble sequence, or transmits a preamble sequence with spreading characteristics, and monitors inventory signaling (Query), transmits the preamble sequence and the identify sequence based on the inventory signaling. The beneficial effect of this design is that base station can estimate the collision situation according to the uplink signal indicated by the pre-inventory signaling, for example, estimating the number of tags in the current inventory round, so as to perform more reasonable downlink scheduling.

[0156] The first format may include at least one of: a generation mode of the temporary identity information, a frequency-domain resource occupied by the temporary identity information, a coding scheme of the temporary identity information, a type of the pilot sequence, and a coding scheme of the pilot sequence.

[0157] In some implementations, the first format indicates the generation mode of the temporary identity information, for example, randomly generating 01-bits of N bits, or randomly selecting a sequence from one or more predefined sets of sequences.

[0158] In some implementations, the first format indicates the frequency-domain resource occupied by the temporary identity information, for example, two bits are included in the first format, where 00 indicates that a first sub-band in the band is occupied, 01 indicates that a second sub-band in the band is occupied, 10 indicates that a third sub-band is occupied, and 11 indicates that a fourth sub-band is occupied. Alternatively, the first format includes a parameter indicating the number of sub-bands, and the tag randomly selects a sub-band for uplink transmission based on the number of sub-bands. Specifically, the tag may concentrate the energy of the uplink information in one or more sub-bands by using subcarrier modulation, for example, modulating the first information by using Miller codes with different values of M.

[0159] In some implementations, the first format indicates the type of the pilot sequence. For example, two pilot formats are predefined according to the protocol, where typeA is a normal pilot, which may be a 01-sequence with a length of K, where K is an integer greater than zero, and typeB is a time-domain spread pilot, which may be a 01-sequence with a length of NK, where N is an integer greater than zero.

[0160] In some implementations, the first format indicates the coding scheme of the temporary identity information and / or the pilot sequence, for example, the first format may indicate whether the temporary identity information in the first information is transmitted by time-domain spreading, and optionally, a parameter related to time-domain spreading, such as a length of a spreading code.

[0161] The spreading of the preamble sequence can improve the accuracy of detection of the existence of uplink signals by the base station, and at the same time, improve the accuracy of uplink signal synchronization. Specifically, detection of uplink collision by base station and detection of the number of uplink collided tags can be realized. The spreading of the identify sequence can make multiple tags perform transmission using the same time-domain resource, and the base station can distinguish multiple users based on a spreading sequence, which improves the efficiency of communication of the base station and the tag.

[0162] In a specific method of time-domain spreading, if the temporary identity information of the UE is a 16-bit 01-sequence, and the length of the spreading code is 4, the spreading code may be a 01-sequence with a length of 4, for example, 0011. XOR is performed on each bit in the spreading code and the temporary identity information to obtain a spreading sequence, and then combined in order to obtain a final spreading sequence. For example, if the first bit of the temporary identity information of the UE is 0, the corresponding spreading sequence is 0011, if the second bit of the temporary identity information is 1, the corresponding spreading sequence is 1100, and so on, a corresponding 16-bit spreading sequence to is obtained, and then combined in order to obtain a final spreading sequence. In the example, the first eight bits of the final spreading sequence are 00111100.

[0163] The second format may include the content included in the first format, and the second format may be identical to the first format or different from the first format. Preferably, the second format is different from the first format. For example, time-domain spreading is not performed on the temporary identity information in the first information transmitted in the first format, and time-domain spreading is performed on the temporary identity information in the second information transmitted in the second format. The beneficial effect of this design method is that it can select a suitable format to transmit uplink information according to the collision situation in the system, and on the premise of ensuring the data rate, it can improve the probability of correct uplink decoding, thus improving the speed of uplink access and inventory. Specifically, before the base station determines that an uplink collision occurs in the system, the first information can occupy a shorter time to increase the data rate; after the base station determines that the uplink collision occurs in the system, the second information transmitted in the second format has higher reliability, which improves the probability of correct uplink decoding.

[0164] Optionally, uplink signals may be transmitted repeatedly. Repetition transmission of uplink signals can improve the success probability of UE / tag access.

[0165] In some implementations, the uplink signals may be transmitted repeatedly in the time domain. For example, the uplink signals are transmitted repeatedly in the time domain according to the number of transmissions predefined by the protocol or the number of transmissions indicated by the downlink signaling. Specifically, if the downlink signaling indicates that the number of transmissions of the temporary identity information is 2, the first format may indicate that the transmitted signal is generated by sequentially concatenating the preamble sequence, the temporary identity information, and the temporary identity information. Alternatively, if the downlink signaling indicates that the number of transmissions of the temporary identity information is k, where k is an integer greater than 1, the first format may indicate that the transmitted signal is generated by sequentially concatenating the preamble sequence and k temporary identity information. Alternatively, if the downlink signaling indicates that the number of transmissions of the temporary identity information is k, the first format may indicate that the transmitted signal is generated by sequentially concatenating k sequences including the preamble sequence and the temporary identity information (that is, k sequences are consecutively transmitted), or k sequences including the preamble sequence and the temporary identity information are sequentially transmitted at certain intervals.

[0166] In some implementations, the uplink signals may be transmitted repeatedly in the frequency domain. When a node transmitting a carrier transmits a single-carrier (single-frequency point signal), the tag modulates the sequence determined based on the uplink information to the single-carrier, thus realizing the backscattering of the uplink information. When the node transmitting the carrier transmits multiple single-carriers (multiple single-frequency point signals), the tag modulates the sequence determined based on the uplink information to each single-carrier, thus realizing the backscattering of the uplink information repeated several times in the frequency domain.

[0167] According to the method of the present invention, a period T2 after the tag receives the downlink signaling is the downlink signaling decoding time and the uplink data preparation time of the tag, the tag may transmit the uplink data at any time within the period T2, the tag may also transmit the uplink data at a time T2 after the downlink signaling is received, as shown in FIG. 10a, and the tag may also transmit the uplink data at a time T2+T3 after the downlink signaling is received, as shown in FIG. 10b. The value of T3 may be predefined according to the protocol, may be acquired based on downlink signaling, may be obtained based on a random number generated by the tag, or may be jointly determined based on the downlink signaling and the random number generated by the tag. In some implementations, the tag generates a random number from 0 to Q-1 according to Q in the inventory command, and determines the length of , for example, where is the maximum backoff time predefined according to the protocol.

[0168] The beneficial effect of this design is that when multiple tags transmit uplink data in the same slot, it is helpful for the base station (or the reader) to identify the number of colliding users by using the time difference of arrival of preamble sequences of different tags and / or the time difference of arrival of identify sequences, thereby guiding the selection of parameters related to subsequent scheduling, improving the probability of successful access of tags, and reducing the access delay of tags.

[0169] In some implementations, the response information related to the first information may include at least one of:

[0170] a parameter indicating a type of control information;

[0171] a parameter indicating a number of response sub-information;

[0172] a sequence indicating a start position of the response sub-information;

[0173] at least one response sub-information.

[0174] The response sub-information includes a sequence related to the temporary identity information in the first information.

[0175] In some implementations, the response information related to the first information includes the parameter indicating the type of control information and a response sub-information, as shown in FIG. 11a. In some implementations, the response information related to the first information includes the parameter indicating the type of control information, the parameter indicating the number of response sub-information, and at least one response sub-information, and optionally, the sequence indicating the start position of the response sub-information. For example, the response information includes four bits indicating that the downlink information is response information (or ACK information), two bits indicating the number of response sub-information, and at least one response sub-information. The response sub-information may be related to the temporary identity information in the first information, for example, if the temporary identity information in the first information is a 01-bit of 16 bits, the response sub-information may be a 01-bit of 16 bits, or a spreading sequence corresponding to a 01-bit of 16 bits. Optionally, there may be a sequence indicating the start position of the response sub-information before each response sub-information, and the sequence may be a 01-sequence with a certain length predefined by the protocol. The response information related to the first information may further include cyclic redundancy check (CRC).

[0176] In some implementations, the UE transmits second information, monitors response information related to the second information, and transmits identity information (third information) based on the response information. The response information related to the second information may include at least one of:

[0177] a parameter indicating a type of control information;

[0178] a parameter indicating a number of response sub-information;

[0179] a sequence indicating a start position of the response sub-information;

[0180] at least one response sub-information;

[0181] a parameter indicating tag identity information;

[0182] a parameter indicating a transmission time of the third information;

[0183] a parameter indicating a coding scheme of the third information.

[0184] The content specifically included in the response information related to the second information can be similar to the description related to the response information related to the first information in the present invention. In some implementations, the response information related to the second information includes at least one of the parameter indicating the tag identity information, the parameter indicating the transmission timing of the third information, and the parameter indicating the coding scheme of the third information. For example, the response information includes first response sub-information and second response sub-information, where the first response sub-information includes identity information (for example, temporary identity information) of a first UE, the second response sub-information includes identity information of a second UE, and the response information further indicates times at which the first UE and the second UE transmit uplink information. In a specific example, the content included in the response information is shown in FIG. 11b. The response information related to the second information may further include cyclic redundancy check.

[0185] In some implementations, the UE transmits the identity information based on the response information related to the second information. The identity information may include information representing the UE identity, such as an Electronic Product Code. Optionally, the UE receives the response information, monitors an identity acknowledgement command (QueryInv), and transmits the identity information based on the received identity acknowledgement command. In some implementations, the content included in the response information is shown in FIG. 11b, in which RAR-t1 indicates a time at which the first UE transmits the third information and / or a coding scheme used by the first UE to transmit the third information, and RAR-t2 indicates a time at which the second UE transmits the third information and / or a coding scheme used by the second UE to transmit the third information.

[0186] In some implementations, the UE determines resources (e.g., time resources) for transmitting the third information based on monitoring of the identity acknowledgement command (QueryInv) and the response information related to the second information. The identity acknowledgement command may include at least one of:

[0187] a parameter indicating a type of control information,

[0188] a parameter indicating tag identity information,

[0189] a parameter indicating a transmission time of the third information,

[0190] a parameter indicating a coding scheme of the third information,

[0191] a parameter indicating a maximum time for monitoring a fifth command.

[0192] Optionally, the UE transmits uplink information (for example, second information), monitors acknowledgement information related to the uplink information, monitors the identity acknowledgement command after monitoring valid acknowledgement information, and determines resources for transmitting the third information based on parameters in the identity acknowledgement command.

[0193] In some implementations, the identity acknowledgement command includes the parameter indicating the type of control information, for example, including four bits 0010 indicating that the downlink command is the identity acknowledgement command. In some implementations, the identity acknowledgement command may include the parameter indicating the coding scheme of the third information, and a method of determining the coding scheme of the uplink information according to the downlink command has been described above, and will not be repeatedly described here.

[0194] FIGS. 12a-12c illustrate diagrams of transmitting identity information (third information) according to an embodiment of the present disclosure. In some implementations, after receiving the identity acknowledgement command, the UE transmits the third information on the corresponding physical resource according to the parameter indicating the tag identity information and / or the parameter indicating the transmission time of the third information in the identity acknowledgement command. In some implementations, the identity acknowledgement command includes two bits indicating the UE identity, specifically, 00 indicates the first UE to transmit the third information, and 01 indicates the second UE to transmit the third information. In the implementation, one identity acknowledgement command may schedule one UE to transmit uplink information.

[0195] In some implementations, the identity acknowledgement command may also implicitly indicate the transmission time of the third information, for example, the first two bits 00 of the four bits 0001 indicate the first UE to transmit the third information at a time A, and the last two bits 01 indicate the second UE to transmit the third information at a time A+T, where T may be a parameter predefined according to the protocol, preferably, T is greater than the time required to transmit the third information; for another example, the first two bits 01 of the four bits 0100 indicate the second UE to transmit the third information at a time A, and the last two bits 00 indicate the first UE to transmit the third information at a time A+T. In the implementation, one identity acknowledgement command may schedule multiple UEs to transmit uplink information.

[0196] FIG. 13 illustrates a flowchart of a method performed by a base station according to an embodiment of the present disclosure. Specifically, at step 1301, a first command related to access is transmitted, where the first command includes a first value. At step 1302, first information is received, where the first information is transmitted based on the first value. At step 1303, a third command related to access is transmitted. At step 1304, second information is received, where the second information is transmitted based on the third command and the first value. In some implementations, the first information is transmitted in a first format and the second information is transmitted in a second format.

[0197] The base station (or the reader) may upsample / oversample the received signal. For example, if the normal sampling rate of the uplink transmission signal is 15kHz * 4096, the sampling rate of oversampling may be M * 15kHz * 4096, where M is an integer equal to or greater than 2. The beneficial effect of this design is that the signal-to-noise ratio of the receiving end is improved, and the base station can recover more accurate uplink signals at the receiving end, thus improving the accuracy of uplink decoding.

[0198] In some implementations, the base station transmits an inventory command, samples and decodes the first information at a normal sampling rate, the base station transmits a re-access command or collision control command, and samples and decodes the second information at the sampling rate of M times.

[0199] FIG. 14 illustrates a flowchart of a method performed by a node according to an embodiment of the present disclosure. Specifically, at step 1401, a single-carrier is transmitted on a first resource corresponding to a first command related to access. At step 1402, a carrier wave switching command is received. At step 1403, multiple single-carriers are transmitted on a third resource corresponding to a second command related to the access based on the carrier wave switching command.

[0200] A method of receiving and transmitting a signal performed by a carrier wave (CW) node or a reader includes: receiving a command transmitted by a control node (e.g., a reader), determining a physical resource and a number of carriers for CW transmission based on the command; transmitting a signal on a corresponding physical resource based on the physical resource and the number of carriers. The physical resource includes a time-domain resource and a frequency-domain resource.

[0201] In some implementations, the base station indicates the CW node to transmit a single-carrier on a time resource corresponding to transmission of an inventory command, the base station transmits the inventory command, receives first information, determines that an uplink collision occurs on the time-domain resource corresponding to the first information based on the first information, the base station indicates the CW node to transmit multiple single-carrier signals on a time resource corresponding to transmission of a re-access command (or collision control command), the base station transmits the re-access command (or collision control command), and receives second information.

[0202] FIG. 15 illustrates a block diagram of a device according to an embodiment of the present disclosure. In some implementations, the device may include any one of a UE, a base station and a node.

[0203] Referring to FIG. 15, the device 1500 according to an embodiment of the present disclosure may include a transceiver 1501 and a controller 1502. For example, the transceiver 1501 may be configured to transmit and receive signals. For example, the controller 1502 may be coupled to the transceiver 1501 and configured to perform the aforementioned methods.

[0204] Those skilled in the art will understand that the above illustrative embodiments are described herein and are not intended to be limiting. It should be understood that any two or more of the embodiments disclosed herein may be combined in any combination. Furthermore, other embodiments may be utilized and other changes may be made without departing from the spirit and scope of the subject matter presented herein. It will be readily understood that aspects of the invention of the disclosure as generally described herein and shown in the drawings may be arranged, replaced, combined, separated and designed in various different configurations, all of which are contemplated herein.

[0205] Those skilled in the art will understand that the various illustrative logical blocks, modules, circuits, and steps described in the present application may be implemented as hardware, software, or a combination of both. To clearly illustrate this interchangeability between hardware and software, various illustrative components, blocks, modules, circuits, and steps are generally described above in the form of their functional sets. Whether such function sets are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. Technicians may implement the described functional sets in different ways for each specific application, but such design decisions should not be interpreted as causing a departure from the scope of the present application.

[0206] The various illustrative logic blocks, modules, and circuits described in the present application may be implemented or performed by 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 devices, discrete gates or transistor logics, discrete hardware components, or any combination thereof designed to perform the functions described herein. The general purpose processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, more than one microprocessors, one or more microprocessors cooperating with a DSP core, or any other such configuration.

[0207] The steps of the method or algorithm described in the present application may be embodied directly in hardware, in a software module executed by a processor, or in a combination thereof. The software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, register, hard disk, removable disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor to enable the processor to read and write information from / to the storage media. In an alternative, the storage medium may be integrated into the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In an alternative, the processor and the storage medium may reside in the user terminal as discrete components.

[0208] In one or more exemplary designs, the functions may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, each function may be stored as one or more pieces of instructions or codes on a computer-readable medium or delivered through it. The computer-readable medium includes both a computer storage medium and a communication medium, the latter including any medium that facilitates the transfer of computer programs from one place to another. The storage medium may be any available medium that can be accessed by a general purpose or special purpose computer.

[0209] The above description is only an exemplary implementation of the present invention, and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

Claims

1.A method performed by a user equipment (UE) in a wireless communication system, comprising:receiving a first command related to access, wherein the first command includes a first value;transmitting first information based on the first value;receiving a third command related to access if first response information related to the first information is not received; andtransmitting second information based on the third command and the first value,wherein the transmitting of the first information comprises transmitting the first information in a first format and the transmitting of the second information comprises transmitting the second information in a second format.2.The method of claim 1, wherein the second format is the same as or different from the first format.3.The method of claim 1, wherein the first information includes first temporary identity information and the second information includes second temporary identity information, andwherein the second temporary identity information is the same as or different from the first temporary identity information.4.The method of claim 1, wherein the first command includes at least one of:a first time;a first resource;a first offset;the first format; anda first length.5.The method of claim 1, wherein the third command is used to indicate the UE to initiate an access request within the first time indicated by the first command, wherein the third command includes at least one of:a second time,the second format,a second offset,a second resource, anda second length.6.The method of claim 1, wherein the first information and the second information include at least one of:a preamble, a midamble, a postamble, an indication sequence,wherein the indication sequence is related to a resource determined by the UE based on the first value.7.The method of claim 1, further comprising:receiving a second command; andtransmitting the first information based on the first command and the second command,wherein the second command includes at least one of:a first index,a third resource,a third offset,the first format, anda first length.8.The method of claim 1, wherein the first format includes at least one of:a type of a first pilot sequence,a generation mode of the first temporary identity information,a first coding scheme,a second coding scheme,wherein the first coding scheme indicates a coding scheme of the first pilot sequence and a coding scheme of the first temporary identity information; or the first coding scheme indicates the coding scheme of the first temporary identity information; or the first coding scheme indicates the coding scheme of the first pilot sequence, and the second coding scheme indicates the coding scheme of the first temporary identity information; andwherein the second format includes at least one of:a type of a second pilot sequence,a generation mode of the second temporary identity information,a third coding scheme,a fourth coding scheme,wherein the third coding scheme indicates a coding scheme of the second pilot sequence and a coding scheme of the second temporary identity information; or the third coding scheme indicates the coding scheme of the second temporary identity information; or the third coding scheme indicates the coding scheme of the second pilot sequence, and the fourth coding scheme indicates the coding scheme of the second temporary identity information.9.The method of claim 1, further comprising:before a second duration after an end of a last time unit where a channel carrying the first information is located, monitoring the third command in case that the first response information is not received.10.The method of claim 1, further comprising:after a first duration and before a second duration after an end of a last time unit where a channel carrying the first information is located, monitoring the third command in case that the first response information is not received.11.A method performed by a base station (BS) in a wireless communication system, comprising:transmitting a first command related to access, wherein the first command includes a first value;receiving first information that is transmitted based on the first value;transmitting a third command related to access; andreceiving second information that is transmitted based on the third command and the first value,wherein the first information is transmitted in a first format and the second information is transmitted in a second format.12.The method of claim 11, wherein the first command includes at least one of:a first time;a first resource;a first offset;the first format; anda first length.13.The method of claim 11, wherein the third command is used to indicate the UE to initiate an access request within the first time indicated by the first command, wherein the third command includes at least one of:a second time,the second format,a second offset,a second resource, anda second length.14.A user equipment (UE) in a communication system, comprising:a transceiver; anda controller coupled with the transceiver and configured to:receive a first command related to access, wherein the first command includes a first value;transmit first information based on the first value;receive a third command related to access if first response information related to the first information is not received; andtransmit second information based on the third command and the first value,wherein the transmitting of the first information comprises transmitting the first information in a first format and the transmitting of the second information comprises transmitting the second information in a second format.15.A base station (BS) in a communication system, comprising:a transceiver; anda controller coupled with the transceiver and configured to:transmit a first command related to access, wherein the first command includes a first value;receive first information that is transmitted based on the first value;transmit a third command related to access; andreceive second information that is transmitted based on the third command and the first value,wherein the first information is transmitted in a first format and the second information is transmitted in a second format.

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