Communication method and apparatus, communication node and storage medium

Abstract

The present disclosure relates to the technical field of wireless communications, and in particular to a communication method and apparatus, a communication node and a storage medium. The method is applied to a first communication node, and comprises: communicating with a second communication node by transceiving a wireless signal frame, the wireless signal frame comprising two uplink and downlink symbols which are arranged adjacent to each other and have different types, the latter symbol among said two uplink and downlink symbols comprising a guard interval GAP, and the guard interval GAP being adjacent to the former symbol among said two uplink and downlink symbols.

Description

Communication method, device, communication node and storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202311873893.6 filed on December 29, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the field of wireless communication technologies, and in particular to a communication method, device, communication node, and storage medium. Background Art

[0004] Half-Duplex Frequency Division Duplexing (HD-FDD) technology requires the use of uplink and downlink handover protection symbols in both uplink and downlink symbols, and downlink and uplink handover protection symbols in both downlink and uplink symbols for handover protection. However, these symbols each occupy a single symbol, introducing significant latency. Therefore, finding a low-latency solution within HD-FDD technology is an urgent issue. Summary of the Invention

[0005] The present disclosure aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, the first objective of the present disclosure is to propose a communication method to reduce communication delay.

[0007] A second objective of the present disclosure is to provide a communication device.

[0008] A third objective of the present disclosure is to provide a communication node.

[0009] A fourth object of the present disclosure is to provide a computer-readable storage medium.

[0010] A fifth object of the present disclosure is to provide a computer program product.

[0011] To achieve the above-mentioned objective, a first embodiment of the present disclosure provides a communication method, which is applied to a first communication node and includes:

[0012] Communicating with the second communication node by sending and receiving wireless signal frames;

[0013] The wireless signal frame includes two uplink and downlink symbols that are adjacently arranged and have different types;

[0014] The latter of the two adjacent uplink and downlink symbols of different types includes a guard interval GAP, and the guard interval GAP is adjacent to the former of the two adjacent uplink and downlink symbols of different types.

[0015] Optionally, the subsequent symbol also includes a first cyclic prefix CP, and in the subsequent symbol, the guard interval GAP and the first cyclic prefix CP are set in sequence.

[0016] Optionally, the wireless signal frame includes two uplink and downlink symbols that are adjacently arranged and of the same type;

[0017] The two adjacent uplink and downlink symbols of the same type both include a second cyclic prefix CP;

[0018] The length of the first cyclic prefix CP is a first length, the length of the guard interval GAP is a second length, the length of the second cyclic prefix CP is a third length, and the sum of the first length and the second length is the same as the third length.

[0019] Optionally, the subsequent symbol further includes first symbol data, and any uplink or downlink symbol of the two adjacently arranged uplink or downlink symbols of the same type further includes second symbol data; in the subsequent symbol, the guard interval GAP, the first cyclic prefix CP, and the first symbol data are sequentially arranged; and in any uplink or downlink symbol of the two adjacently arranged uplink or downlink symbols of the same type, the second cyclic prefix CP and the second symbol data are sequentially arranged; the method further includes:

[0020] receiving a wireless signal frame sent by the second communication node;

[0021] In the case that the subsequent symbol has completed synchronization, discarding the guard interval GAP and the first cyclic prefix CP before the first symbol data;

[0022] In a case where any uplink / downlink symbol of the two adjacent uplink / downlink symbols of the same type has completed synchronization, the second cyclic prefix CP preceding any uplink / downlink symbol of the two adjacent uplink / downlink symbols of the same type is discarded.

[0023] Optionally, the second cyclic prefix CP is a normal cyclic prefix CP or an extended cyclic prefix CP.

[0024] Optionally, the type of the uplink and downlink symbols includes at least one of the following:

[0025] Upward symbol;

[0026] Downward symbol.

[0027] Optionally, the wireless signal frame includes at least one subframe, any subframe in the at least one subframe includes at least one orthogonal frequency division multiplexing OFDM symbol, and any orthogonal frequency division multiplexing OFDM symbol in the at least one orthogonal frequency division multiplexing OFDM symbol includes at least one uplink and downlink symbol.

[0028] Optionally, the number of orthogonal frequency division multiplexing (OFDM) symbols corresponds to a number range of 1 to 14.

[0029] Optionally, any uplink and downlink symbol in the wireless signal frame includes the guard interval GAP.

[0030] Optionally, the first communication node and the second communication node are selected from at least one of the following combinations:

[0031] The first communication node is a base station, and the second communication node is a terminal;

[0032] The first communication node is the terminal, and the second communication node is the base station.

[0033] Optionally, the terminal is a reduced capability RedCap terminal.

[0034] To achieve the above-mentioned objectives, a second embodiment of the present disclosure provides a communication device, including:

[0035] a transceiver unit, configured to communicate with the second communication node by sending and receiving wireless signal frames;

[0036] The wireless signal frame includes two uplink and downlink symbols that are adjacently arranged and have different types;

[0037] The latter of the two adjacent uplink and downlink symbols of different types includes a guard interval GAP, and the guard interval GAP is adjacent to the former of the two adjacent uplink and downlink symbols of different types.

[0038] To achieve the above-mentioned object, a third embodiment of the present disclosure provides a communication node, comprising: a processor, and a memory communicatively connected to the processor;

[0039] Memory stores computer-executable instructions;

[0040] The processor executes the computer-executable instructions stored in the memory to implement the method shown in any one of the aforementioned first aspects.

[0041] To achieve the above-mentioned purpose, the fourth embodiment of the present disclosure proposes a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are executed by a processor, they are used to implement the method shown in any one of the above-mentioned first aspects.

[0042] To achieve the above-mentioned objectives, an embodiment of the fifth aspect of the present disclosure proposes a computer program product, including a computer program, which implements the method shown in any one of the above-mentioned first aspects when executed by a processor.

[0043] In summary, the method, device, communication node and storage medium provided by the present invention, by setting the protection interval GAP inside the uplink and downlink symbols, there is no need to set up uplink and downlink switching protection symbols and downlink and uplink switching protection symbols, there is no need to occupy symbol resources as protection intervals, uplink and downlink and downlink and uplink switching can be performed quickly, and communication delay can be shortened.

[0044] Additional aspects and advantages of the present disclosure will be given in part in the description below and in part will be obvious from the description below, or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0046] FIG1 is a schematic diagram of the structure of an orthogonal frequency division multiplexing (OFDM) symbol frame of an existing 5G system provided by an embodiment of the present disclosure;

[0047] FIG2 is a schematic diagram of the structure of a wireless signal frame of a reduced-capacity RedCap HD-FDD in an existing solution provided by an embodiment of the present disclosure;

[0048] FIG3 is a flow chart of a communication method provided by an embodiment of the present disclosure;

[0049] FIG4 is a flow chart of a communication method provided by an embodiment of the present disclosure;

[0050] FIG5 is a schematic diagram of the structure of a wireless frame signal provided by an embodiment of the present disclosure;

[0051] FIG6 is a schematic diagram of the structure of uplink and downlink symbols provided by an embodiment of the present disclosure;

[0052] FIG7 is a schematic diagram of a data discarding process provided by an embodiment of the present disclosure;

[0053] FIG8 is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0054] The following describes in detail embodiments of the present disclosure, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0055] Fifth-generation mobile communication technology (5G) defines three major use cases: enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (uRLLC), and massive machine-type communications (mMTC). eMBB primarily targets high-bandwidth applications such as 4K / 8K, virtual reality (VR) and augmented reality (AR); uRLLC primarily targets ultra-high-reliability, ultra-low-latency applications such as remote robot control and autonomous driving; and mMTC primarily targets low-speed, massive IoT connections. However, between eMBB, mMTC, and uRLLC lies a gap in the "mid-range IoT market," such as surveillance cameras and industrial sensors. eMBB and uRLLC waste resources, while mMTC falls short of latency and bandwidth requirements. Reduced Capability (RedCap) is the technology that addresses this gap.

[0056] Reduced Capacity RedCap technology is a fifth-generation mobile communication technology (5G) defined by the 3rd Generation Partnership Project (3GPP) standardization organization, also known as lightweight 5G. It reduces terminal costs and power consumption by reducing terminal bandwidth, the number of transmitting and receiving antennas, and lowering the modulation order.

[0057] Among related technologies, reduced-capacity RedCap technology typically utilizes half-duplex frequency division duplexing (HD-FDD). HD-FDD allows for transmission and reception at different frequencies at different times, eliminating the need for a duplexer. This not only reduces costs but also enhances integration (duplexers are typically larger), reduces equipment footprint, and facilitates device miniaturization.

[0058] In related technologies, a cyclic prefix (CP) is added before each Orthogonal Frequency Division Multiplexing (OFDM) symbol to solve the problems of inter-symbol interference and inter-subcarrier interference in OFDM caused by multipath delay and timing error. The longer the cyclic prefix CP, the longer the maximum multipath delay extension supported, and the larger the corresponding coverage. But on the other hand, the longer the cyclic prefix CP, the greater the 5G system overhead. According to the 3GPP standard, the 5G system supports two cyclic prefix CP lengths, namely the conventional cyclic prefix CP (4.69us or 5.21us) and the extended cyclic prefix CP (16.67us). The coverage range supporting the maximum multipath delay is generally several kilometers, but in application scenarios such as industrial control where 5G reduces the capability of RedCap, the coverage range of the communication base station is greatly reduced, generally in factories, mines, workshops, etc., and the coverage range is usually less than 100 meters. Therefore, there is a certain redundancy in the length of the traditional 5G cyclic prefix CP.

[0059] Taking a scenario as an example, assuming that the bandwidth configuration of the existing 5G system is 20MHz and the sampling rate is 30.72MHz, Figure 1 is a structural diagram of an orthogonal frequency division multiplexing OFDM symbol frame of an existing 5G system provided by an embodiment of the present disclosure. As shown in Figure 1, a wireless frame contains 10 subframes, each subframe contains 14 or 12 orthogonal frequency division multiplexing OFDM symbols, and each symbol consists of a cyclic prefix CP and orthogonal frequency division multiplexing OFDM symbol data. For a conventional cyclic prefix CP, each subframe contains 14 orthogonal frequency division multiplexing OFDM symbols, and the length of the conventional cyclic prefix CP is 2 types, namely 4.69us and 5.21us; for an extended cyclic prefix CP, each subframe contains 12 orthogonal frequency division multiplexing OFDM symbols, and the length of the extended cyclic prefix CP is 16.67us.

[0060] Secondly, compared with full-duplex frequency division duplexing (FD-FDD) and time division duplexing (TDD) technologies, although HD-FDD technology saves costs, it performs uplink and downlink switching separately at different frequencies and time domains, and therefore requires a guard period (GAP) during the uplink-to-downlink and downlink-to-uplink switching processes.

[0061] The guard interval GAP is generally implemented by occupying Orthogonal Frequency Division Multiplexing (OFDM) data symbol resources. Figure 2 is a schematic diagram of the structure of a wireless signal frame of a reduced-capacity RedCap HD-FDD in an existing solution provided by an embodiment of the present disclosure. As shown in Figure 2, the wireless signal frame consists of N subframes, each subframe consists of M orthogonal frequency division multiplexing OFDM symbols, where 1≤M≤14; the orthogonal frequency division multiplexing OFDM symbols include uplink symbols and downlink symbols, and there must be an uplink-downlink switching protection symbol NU-D between the uplink and downlink symbols, and there must be a downlink-uplink switching protection symbol ND-U between the downlink and uplink symbols. Among them, the uplink symbol is used for the terminal to send uplink data and the base station to receive it, and the downlink symbol is used for the base station to send downlink data and the terminal to receive it; the uplink-downlink switching protection symbol NU-D and the downlink-uplink switching protection symbol ND-U are used in the process of changing the transmission mode and receiving mode of the radio frequency signal duplexer of the base station and the terminal. Since one symbol data is occupied during the switching protection, business data processing cannot be performed, which increases system overhead.

[0062] In summary, when RedCap terminals are operating with both uplink and downlink services, this solution introduces significant latency. However, key RedCap application scenarios, such as industrial sensors, still have high latency requirements. The significant latency issues with RedCap HD-FDD technology will impact the adoption and promotion of 5G in To Business (ToB) industries, such as industrial control and autonomous driving.

[0063] Therefore, finding a low-latency solution in the reduced-capacity RedCap HD-FDD technology solution is an urgent problem that needs to be solved.

[0064] The present disclosure is described in detail below with reference to specific embodiments.

[0065] In the first embodiment, as shown in FIG3 , FIG3 is a flow chart of a communication method provided by an embodiment of the present disclosure. The method can be implemented by a computer program and can be run on a device that performs the communication method. The computer program can be integrated into an application or run as an independent tool application.

[0066] A communication device can be a communication node with communication method functionality. A communication node refers to a device or node in a network that can send, receive, or forward information. These nodes can be physical devices, such as routers and switches, or virtual devices, such as software programs or services within the network. In a communication network, a communication node is responsible for receiving and forwarding information, ensuring smooth transmission within the network. Each communication node has its own address and identifier to uniquely identify itself within the network.

[0067] The method may be executed by the first communication node.

[0068] Specifically, the communication method includes the following steps:

[0069] S101, communicating with a second communication node by sending and receiving wireless signal frames;

[0070] The wireless signal frame includes two uplink and downlink symbols that are adjacently arranged and have different types;

[0071] The latter of the two uplink and downlink symbols that are adjacently arranged and have different types includes a guard interval GAP, and the guard interval GAP is adjacent to the former of the two uplink and downlink symbols that are adjacently arranged and have different types.

[0072] According to some embodiments, a radio signal frame (radio frame) is the basic data unit transmitted in wireless communications. It is a data packet consisting of a series of bits used to transmit and receive information on a wireless channel. Radio signal frames play a very important role in wireless communications and are crucial for ensuring communication quality, improving communication efficiency, and supporting various wireless communication technologies. A radio signal frame typically contains a series of fields that describe information such as the type of data, the transmission method, the start and end of the data, and data parity and error correction. The organization and encoding of these fields are different from those of wired communications because the transmission characteristics of wireless channels are different from those of wired channels, and the interference and attenuation they are subject to are more complex and variable. Therefore, designing a suitable radio frame structure is crucial to ensuring the performance of wireless communications.

[0073] In some embodiments, the types of uplink and downlink symbols include but are not limited to uplink symbols and downlink symbols. Uplink symbols refer to data symbols sent from the terminal to the base station, while downlink symbols refer to data symbols sent from the base station to the terminal.

[0074] In some embodiments, the types of the preceding symbol and the succeeding symbol of two adjacent uplink and downlink symbols of different types are not fixed. For example, the preceding symbol may be an uplink symbol and the succeeding symbol may be a downlink symbol; or the preceding symbol may be a downlink symbol and the succeeding symbol may be an uplink symbol.

[0075] It should be noted that, because the coverage of communication base stations is significantly reduced in existing 5G system applications, the cyclic prefix (CP) length in uplink and downlink symbols can be shortened. The remaining CP resources can be used to set the guard interval (GAP) to achieve switching protection between different types of uplink and downlink symbols. At the same time, the shortened CP retained in the uplink and downlink symbols can also meet multipath delay protection requirements.

[0076] In summary, the method provided in this embodiment, by setting the protection interval GAP inside the uplink and downlink symbols, can eliminate the need to set up uplink and downlink switching protection symbols and downlink and uplink switching protection symbols, and does not need to occupy symbol resources as protection intervals. It can quickly perform uplink and downlink and downlink and uplink switching, shorten communication delay, reduce symbol data overhead, and improve system throughput.

[0077] In a second embodiment, as shown in FIG4 , FIG4 is a flow chart of a communication method provided by an embodiment of the present disclosure, wherein the method can be executed by a first communication node.

[0078] Specifically, the communication method includes the following steps:

[0079] S201, receiving a wireless signal frame sent by a second communication node;

[0080] According to some embodiments, a wireless signal frame may include two uplink and downlink symbols that are adjacently set and of different types; the latter symbol of the two uplink and downlink symbols that are adjacently set and of different types includes a protection interval GAP, and the protection interval GAP is adjacent to the former symbol of the two uplink and downlink symbols that are adjacently set and of different types.

[0081] In some embodiments, the wireless signal frame may further include two uplink and downlink symbols that are adjacently arranged and of the same type; any one of the two uplink and downlink symbols that are adjacently arranged and of the same type includes a second cyclic prefix CP.

[0082] According to some embodiments, the wireless signal frame includes at least one subframe, any subframe in the at least one subframe includes at least one orthogonal frequency division multiplexing OFDM symbol, and any orthogonal frequency division multiplexing OFDM symbol in the at least one orthogonal frequency division multiplexing OFDM symbol includes at least one uplink and downlink symbol.

[0083] Taking a scenario as an example, Figure 5 is a schematic diagram of the structure of a wireless frame signal provided by an embodiment of the present disclosure. As shown in Figure 5, the wireless frame signal includes N subframes, each of the N subframes includes M orthogonal frequency division multiplexing (OFDM) symbols, where N and M are both positive integers, and each of the M orthogonal frequency division multiplexing (OFDM) symbols includes at least one uplink and downlink symbol; wherein the second orthogonal frequency division multiplexing (OFDM) symbol includes four uplink and downlink symbols, the first uplink and downlink symbol is an uplink symbol, and the second uplink and downlink symbol is a downlink symbol. Therefore, the second uplink and downlink symbol includes a guard interval (GAP).

[0084] According to some embodiments, a subframe is a basic time unit in wireless communication technology. An Orthogonal Frequency Division Multiplexing (OFDM) symbol is a basic unit for transmitting information on a subcarrier.

[0085] In some embodiments, the number of orthogonal frequency division multiplexing (OFDM) symbols may range from 1 to 14, that is, 1≤M≤14.

[0086] In some embodiments, FIG6 is a schematic diagram of the structure of an uplink and downlink symbol provided by an embodiment of the present disclosure. As shown in FIG6, in a subsequent symbol, a guard interval GAP, a first cyclic prefix CP, and first symbol data are sequentially arranged, and in any of two adjacent uplink and downlink symbols of the same type, a second cyclic prefix CP and second symbol data are sequentially arranged; wherein, the length of the first cyclic prefix CP is a first length, the length of the guard interval GAP is a second length, and the length of the second cyclic prefix CP is a third length, and the sum of the first length and the second length is the same as the third length.

[0087] It should be noted that the guard interval GAP can be included only in the subsequent symbols. In this case, the total number of guard intervals GAP is not greater than the total number of uplink and downlink symbols. The guard interval GAP can also be included in any uplink and downlink symbol in the wireless signal frame.

[0088] In some embodiments, symbol data is used for sending and receiving service data. First symbol data refers to symbol data in the subsequent symbol, and second symbol data refers to symbol data in either uplink or downlink symbols. The terms "first" and "second" in the first and second symbol data have no special meanings and are used only to distinguish them.

[0089] In some embodiments, a cyclic prefix (CP), including a first CP and a second CP, can provide multipath protection for symbol data. By adding the CP to the beginning of both uplink and downlink symbols, the receiver can use this additional signal to detect and estimate the impact of multipath effects and perform appropriate processing to recover the original symbol data. Therefore, the CP and the data signal at the end of the symbol data portion are identical, and their duplication ensures that the receiver can correctly process the received signal.

[0090] According to some embodiments, the second cyclic prefix CP is a normal cyclic prefix CP or an extended cyclic prefix CP, wherein the length of the normal cyclic prefix CP may be 144Ts or 160Ts, and the length of the extended cyclic prefix CP may be 512Ts, where Ts=1 / 30.72 microseconds.

[0091] Taking a scenario as an example, assuming the system bandwidth is configured to be 20 MHz and the sampling rate is 30.72 MHz, when the length of the second cyclic prefix (CP) is 144 Ts (approximately 4.69 us), the guard interval (GAP) may include 64 samples, the length of the guard interval (GAP) may be approximately 2.08 us, and the first cyclic prefix (CP) may include 80 samples, the length of the first cyclic prefix (CP) may be approximately 2.60 us. When the length of the second cyclic prefix (CP) is 160 Ts (approximately 5.21 us), the guard interval (GAP) may include 64 samples, the length of the guard interval (GAP) may be approximately 2.08 us, and the first cyclic prefix (CP) may include 96 samples, the length of the first cyclic prefix (CP) may be approximately 3.12 us. When the length of the second cyclic prefix (CP) is 512 Ts (approximately 46.67 us), the guard interval (GAP) may include 256 samples, the length of the guard interval (GAP) may be approximately 8.34 us, and the first cyclic prefix (CP) may include 256 samples, the length of the first cyclic prefix (CP) may be approximately 8.33 us.

[0092] According to some embodiments, the first communication node and the second communication node are selected from at least one of the following groups:

[0093] The first communication node is a base station, and the second communication node is a terminal;

[0094] The first communication node is a terminal, and the second communication node is a base station.

[0095] In this case, the method provided by the embodiment of the present disclosure can be used in the process of changing the transmission mode and the reception mode of the radio frequency signal duplexer of the base station and the terminal.

[0096] In some embodiments, the terminal may be, for example, a reduced capability RedCap terminal.

[0097] S202, when synchronization is completed for the subsequent symbol, discarding the guard interval GAP and the first cyclic prefix CP before the first symbol data;

[0098] S203: When any uplink / downlink symbol of two adjacent uplink / downlink symbols of the same type has completed synchronization, discard the second cyclic prefix CP preceding any uplink / downlink symbol of the two adjacent uplink / downlink symbols of the same type.

[0099] In some embodiments, FIG7 is a flowchart of a data discard process provided by an embodiment of the present disclosure. As shown in FIG7 , the uplink and downlink symbols may include not only a cyclic prefix CP to carry information or modulated information, but also a protection interval GAP. Therefore, for the terminal, the terminal can maintain the existing cyclic prefix CP processing method, that is, discard the length of the conventional cyclic prefix CP or the extended cyclic prefix CP after synchronization of the orthogonal frequency division multiplexing OFDM symbol, that is, discard the data of the third length before the symbol data, and the data of the third length in the subsequent symbol may include the protection interval GAP set in the embodiment of the present disclosure. Therefore, compared with the existing terminal processing scheme of only discarding the uplink and downlink switching protection symbols, the communication method provided by the embodiment of the present disclosure may not affect the cyclic prefix CP protection, the received signal processing is consistent with the existing process, has no impact on the terminal processing, and is compatible with the terminal.

[0100] In summary, the method provided by the embodiment of the present disclosure utilizes the redundant resources of the cyclic prefix CP of the OFDM symbol in low-complexity scenarios such as the Internet of Things and industrial control of 5G vertical applications as the protection interval GAP for uplink to downlink switching and downlink to uplink switching in the HD-FDD mode, without the need for orthogonal frequency division multiplexing OFDM symbol resources as a protection interval. In this way, uplink and downlink switching and downlink and uplink switching can be performed quickly, which can overcome the problems and defects of large delays in existing HD-FDD technologies and ensure the low-latency characteristics of reduced-capacity RedCap access. Secondly, it can also reduce the data overhead of the OFDM symbol of orthogonal frequency division multiplexing and improve the system throughput. In addition, the processing method of the remaining cyclic prefix CP time and the OFDM symbol time of orthogonal frequency division multiplexing is the same as the existing processing method, which is compatible with existing terminals and is conducive to smooth evolution.

[0101] In order to implement the above embodiments, the present disclosure also provides a communication device.

[0102] FIG8 is a schematic diagram of the structure of a communication device provided in an embodiment of the present disclosure. As shown in FIG8 , the communication device 800 includes:

[0103] The transceiver unit 801 is configured to communicate with the second communication node by sending and receiving wireless signal frames;

[0104] The wireless signal frame includes two uplink and downlink symbols that are adjacently arranged and have different types;

[0105] The latter of the two uplink and downlink symbols that are adjacently arranged and have different types includes a guard interval GAP, and the guard interval GAP is adjacent to the former of the two uplink and downlink symbols that are adjacently arranged and have different types.

[0106] Optionally, the subsequent symbol also includes a first cyclic prefix CP, and the guard interval GAP and the first cyclic prefix CP are set in sequence in the subsequent symbol.

[0107] Optionally, the wireless signal frame includes two uplink and downlink symbols that are adjacently arranged and of the same type;

[0108] Two adjacent uplink and downlink symbols of the same type both include a second cyclic prefix CP;

[0109] The length of the first cyclic prefix CP is a first length, the length of the guard interval GAP is a second length, the length of the second cyclic prefix CP is a third length, and the sum of the first length and the second length is the same as the third length.

[0110] Optionally, the subsequent symbol further includes first symbol data, and any uplink and downlink symbol of two adjacently arranged uplink and downlink symbols of the same type further includes second symbol data; in the subsequent symbol, a guard interval GAP, a first cyclic prefix CP, and the first symbol data are sequentially arranged; and in any uplink and downlink symbol of two adjacently arranged uplink and downlink symbols of the same type, a second cyclic prefix CP and the second symbol data are sequentially arranged. The method further includes:

[0111] receiving a wireless signal frame sent by a second communication node;

[0112] When synchronization is completed in the subsequent symbol, the guard interval GAP and the first cyclic prefix CP before the first symbol data are discarded;

[0113] In the case that any uplink or downlink symbol of two adjacently arranged uplink or downlink symbols of the same type has completed synchronization, the second cyclic prefix CP before any uplink or downlink symbol is discarded.

[0114] Optionally, the second cyclic prefix CP is a normal cyclic prefix CP or an extended cyclic prefix CP.

[0115] Optionally, the type of the uplink and downlink symbols includes at least one of the following:

[0116] Upward symbol;

[0117] Downward symbol.

[0118] Optionally, the wireless signal frame includes at least one subframe, any subframe in the at least one subframe includes at least one orthogonal frequency division multiplexing OFDM symbol, and any orthogonal frequency division multiplexing OFDM symbol in the at least one orthogonal frequency division multiplexing OFDM symbol includes at least one uplink and downlink symbol.

[0119] Optionally, the number of orthogonal frequency division multiplexing (OFDM) symbols corresponds to a number range of 1 to 14.

[0120] Optionally, any uplink and downlink symbol in the wireless signal frame includes a guard interval GAP.

[0121] Optionally, the first communication node and the second communication node are selected from at least one of the following combinations:

[0122] The first communication node is a base station, and the second communication node is a terminal;

[0123] The first communication node is a terminal, and the second communication node is a base station.

[0124] Optionally, the terminal is a reduced capability RedCap terminal.

[0125] It should be noted that the above explanation of the communication method embodiment is also applicable to the communication device of this embodiment and will not be repeated here.

[0126] In summary, the device provided by the embodiment of the present disclosure, by setting the protection interval GAP inside the uplink and downlink symbols, can eliminate the need to set up uplink and downlink switching protection symbols and downlink and uplink switching protection symbols, does not need to occupy symbol resources as protection intervals, can quickly perform uplink and downlink and downlink and uplink switching, can shorten communication delay, reduce symbol data overhead, and improve system throughput.

[0127] In order to implement the above embodiments, the present disclosure also proposes a communication node, including: a processor, and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the method provided by the above embodiments.

[0128] In order to implement the above embodiments, the present disclosure further proposes a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the methods provided by the above embodiments.

[0129] In order to implement the above embodiments, the present disclosure further provides a computer program product, including a computer program, which implements the methods provided in the above embodiments when executed by a processor.

[0130] The collection, storage, use, processing, transmission, provision and disclosure of user personal information involved in this disclosure are in compliance with relevant laws and regulations and do not violate public order and good morals.

[0131] It is important to note that personal information collected from users should be used for legitimate and reasonable purposes and should not be shared or sold beyond these legitimate uses. Furthermore, such collection / sharing should be conducted only after receiving the user's informed consent, including but not limited to notifying the user to read the user agreement / user notice and sign an agreement / authorization that includes the relevant user information before using the feature. Furthermore, any necessary steps must be taken to safeguard and secure access to such personal information and ensure that others with access to personal information comply with its privacy policy and procedures.

[0132] This disclosure contemplates providing implementations that allow users to selectively block the use or access of personal information data. Specifically, this disclosure contemplates providing hardware and / or software to prevent or block access to such personal information data. Risks can be minimized by limiting data collection and deleting data once it is no longer needed. Furthermore, where applicable, such personal information can be de-identified to protect user privacy.

[0133] In the descriptions of the aforementioned embodiments, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are mutually inconsistent.

[0134] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0135] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present disclosure includes additional implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.

[0136] The logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device). For purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic devices), a portable computer disk cartridge (magnetic devices), a random access memory (RAM), a read-only memory (ROM), an erasable programmable ROM or flash memory, a fiber optic device, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering, or processing in another suitable manner as necessary, and then stored in a computer memory.

[0137] It should be understood that various parts of the present disclosure can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used to implement: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field-programmable gate array (FPGA), etc.

[0138] Those skilled in the art will appreciate that all or part of the steps in the method for implementing the above-mentioned embodiment can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

[0139] In addition, the functional units in the various embodiments of the present disclosure may be integrated into a single processing module, each unit may exist physically separately, or two or more units may be integrated into a single module. The aforementioned integrated modules may be implemented in the form of hardware or in the form of software functional modules. If the integrated modules are implemented in the form of software functional modules and sold or used as independent products, they may also be stored in a computer-readable storage medium.

[0140] The storage medium mentioned above may be a read-only memory, a magnetic disk, or an optical disk, etc. Although the embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. A person of ordinary skill in the art may make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A communication method, applied to a first communication node, includes: Communicating with a second communication node by transmitting and receiving wireless signal frames; The wireless signal frame includes two adjacent uplink and downlink symbols with different types; In the subsequent symbol of the two adjacent uplink and downlink symbols with different types, a guard interval GAP is included, and the guard interval GAP is adjacent to the previous symbol of the two adjacent uplink and downlink symbols with different types.

2. The method according to claim 1, wherein The subsequent symbol further includes a first cyclic prefix CP, and in the subsequent symbol, the guard interval GAP and the first cyclic prefix CP are arranged in sequence.

3. The method according to claim 2, wherein The wireless signal frame includes two adjacent uplink and downlink symbols with the same type; Any one of the two adjacent uplink and downlink symbols with the same type includes a second cyclic prefix CP; The length of the first cyclic prefix CP is a first length, the length of the guard interval GAP is a second length, the length of the second cyclic prefix CP is a third length, and the sum of the first length and the second length is the same as the third length.

4. The method according to claim 3, wherein, The subsequent symbol further includes first symbol data, and any one of the two adjacent uplink and downlink symbols with the same type further includes second symbol data. In the subsequent symbol, the guard interval GAP, the first cyclic prefix CP, and the first symbol data are arranged in sequence. In any one of the two adjacent uplink and downlink symbols with the same type, the second cyclic prefix CP and the second symbol data are arranged in sequence. The method further includes: Receiving the wireless signal frame sent by the second communication node; When the subsequent symbol has completed synchronization, discarding the guard interval GAP and the first cyclic prefix CP before the first symbol data; When any one of the two adjacent uplink and downlink symbols with the same type has completed synchronization, discarding the second cyclic prefix CP before any one of the two adjacent uplink and downlink symbols with the same type.

5. The method according to claim 1, wherein The wireless signal frame includes at least one subframe, any one of the at least one subframes includes at least one orthogonal frequency division multiplexing OFDM symbol, and any one of the at least one orthogonal frequency division multiplexing OFDM symbols includes at least one uplink and downlink symbol.

6. The method according to claim 1, wherein, The first communication node and the second communication node are selected from at least one of the following combinations: The first communication node is a base station, and the second communication node is a terminal; The first communication node is the terminal, and the second communication node is the base station.

7. A communication device, includes: A transceiver unit, configured to communicate with a second communication node by transmitting and receiving wireless signal frames; The wireless signal frame includes two adjacent uplink and downlink symbols with different types; In the subsequent symbol of the two adjacent uplink and downlink symbols with different types, a guard interval GAP is included, and the guard interval GAP is adjacent to the previous symbol of the two adjacent uplink and downlink symbols with different types.

8. A communication node, comprising: A processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 6.

9. A computer-readable storage medium storing computer-executable instructions, which are used to implement the method according to any one of claims 1 to 6 when executed by a processor.

10. A computer program product comprising a computer program, which implements the method according to any one of claims 1 to 6 when executed by a processor.

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