Frame structure indication method and communication device

Abstract

The invention provides a frame structure indication method and a communication device. In the method, a first node sends first indication information, a first frame structure pattern is used for indicating information types for transmission of a plurality of first time-frequency resource units contained in a first target time-frequency resource, and the frequency domain width of the first time-frequency resource units is smaller than the total frequency domain width of the first target time-frequency resource. The first frame structure pattern comprises at least two first time-frequency resource units in a frequency domain; and performing information transmission according to the first frame structure pattern. The first frame structure pattern comprises at least two first resource units in the frequency domain, so that different resource units in the same time domain can correspond to different transmission information, uplink, downlink or full duplex transmission can be carried out through different resource units in the same time period, flexible resource scheduling is realized, and the transmission efficiency is improved. And therefore, communication requirements under different conditions can be met.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of wireless communication, and in particular, to a frame structure indication method and a communication device. Background Art

[0002] Ultra-reliable low-latency communication (URLLC) is one of the three application scenarios of 5G, and is also a typical scenario that differentiates 5G from 2G / 3G / 4G. As a breakthrough for the mobile communication industry to enter vertical industries, URLLC is very crucial for the wide applications in fields such as autonomous driving, industrial manufacturing, vehicle-to-everything (V2X), and smart grid, and has been comprehensively enhanced in the 3GPP NR R16 phase.

[0003] The characteristics of the URLLC scenario are low latency and high reliability. The application scope of the URLLC scenario is very large, and the requirements for latency, reliability, and bandwidth can be different in different scenarios. The application scenarios of URLLC at least include the "three remote" scenarios of power automation, vehicle-to-everything (V2X) scenarios, industrial manufacturing scenarios, etc.

[0004] In a semi-static sub-band full-duplex (SBFD) uplink (UL) sub-band, the frequency-domain resources account for about 20% - 25% of the bandwidth. The dynamic SBFD uplink and downlink configuration is more flexible than the semi-static SBFD. The base station can flexibly configure the uplink and downlink transmissions at different times according to the uplink and downlink traffic. Compared with the dynamic time division duplex (TDD), the dynamic SBFD allows the UL to transmit at any time, with lower latency.

[0005] However, the current frame structure indication method is based on the TDD or FDD mode, and there is no applicable frame structure indication method for more flexible uplink and downlink configuration scenarios. Summary of the Invention

[0006] Embodiments of the present application provide a frame structure indication method and a communication device, which are used to implement a frame structure configuration applicable to the SBFD scenario, so as to avoid the problem that conflicts may occur in the frame structure configuration based on TDD.

[0007] In a first aspect, an embodiment of the present application provides a frame structure indication method, including: sending first indication information, where the first indication information is used to determine a first frame structure pattern, and the first frame structure pattern is used to indicate information types respectively transmitted by a plurality of first time-frequency resource units included in a first target time-frequency resource. The frequency-domain width of the first time-frequency resource unit is less than the total frequency-domain width of the first target time-frequency resource, and the first frame structure pattern includes at least two first time-frequency resource units in the frequency domain; performing information transmission according to the first frame structure pattern.

[0008] In the traditional frame structure indication method, the frame structure pattern only includes one resource unit in the frequency domain, and its width in the frequency domain is equal to the available frequency band bandwidth. Therefore, the traditional frame structure indication method cannot be applied to more flexible scenarios. In the above embodiment of the present application, the first node can, through the first indication information, indicate to one or more second nodes the information types used for transmission by each first resource unit in the first frame structure pattern; and the target resource corresponding to the first frame structure pattern includes at least two first time-frequency resource units in the frequency domain. Therefore, the frequency-domain width of the first time-frequency resource unit is less than the available frequency band width. Since the target resource includes at least two first time-frequency resource units in the frequency domain, different time-frequency resource units in the same time domain can correspond to different information types, so that uplink transmission, downlink transmission, full-duplex transmission, or flexible scheduling can be performed through different resource units within the same time period, thereby realizing more flexible resource scheduling to meet communication requirements in different situations.

[0009] In a possible implementation manner, the method further includes: sending second indication information, where the second indication information is used to indicate the frequency-domain width and / or time-domain length of each of the first time-frequency resource units. In this implementation manner, the first node can notify the second node of the frequency-domain width and / or time-domain length of the first time-frequency resource unit through the second indication information; alternatively, the frequency-domain width and / or time-domain length of the first time-frequency resource unit can also be pre-agreed, or can also be sent to the second node together with the first indication information.

[0010] In a possible implementation, after information transmission according to the first frame structure pattern, the method further includes: sending third indication information for determining a second frame structure pattern, where the second frame structure pattern is used to indicate the information type to be transmitted by one or more second time-frequency resource units included in a second target resource, and the second target resource is a subset of the first target resource; performing information transmission on the second target resource according to the second frame structure pattern; and performing information transmission on the resource in the first target resource other than the second target resource according to the first frame structure pattern. In this implementation, the first node and the second node can first perform information transmission according to the first frame structure pattern. When it is necessary to indicate that the second target resource in the first target resource uses the second frame structure pattern, the first node then sends the third indication information, and then the first node and the second node perform information transmission according to the first frame structure pattern and the second frame structure pattern; or, the first node can also first send the first indication information and the third indication information, then the first node and the second node can directly perform information transmission according to the first frame structure pattern and the second frame structure pattern. Through the first frame structure pattern and the second frame structure pattern, it can be used to implement cell-level larger frame structure indication and user-level smaller frame structure indication, and can also be used to reduce CLI and self-interference.

[0011] In a possible implementation, the method further includes: sending fourth indication information for indicating the frequency domain width and / or time domain length of each of the second time-frequency resource units. In this implementation, the first node can notify the second node of the frequency domain width and / or time domain length of the second time-frequency resource unit through the fourth indication information; or, the frequency domain width and / or time domain length of the second time-frequency resource unit can also be pre-agreed, or can also be sent to the second node together with the third indication information.

[0012] In a possible implementation, the information type includes at least one of the following: uplink transmission, downlink transmission, full-duplex transmission, or flexible scheduling.

[0013] In a possible implementation, the first target resource includes at least two of the first time-frequency resource units in the time domain, and the time domain lengths of the at least two first time-frequency resource units are the same or different.

[0014] In a possible implementation, the time domain lengths of different first time-frequency resource units are the same or different; and / or, the frequency domain widths of different first time-frequency resource units are the same or different. If the multiple first time-frequency resource units included in the first frame structure pattern are the same in size in the frequency domain and time domain, it can be called a regular frame structure pattern, with a simple indication process and being easy for the second node to understand. If the multiple first time-frequency resource units included in the first frame structure pattern are not completely the same in size in the frequency domain and time domain, it can be called an irregular frame structure pattern, with a more flexible and variable resource configuration and being able to adapt to more resource configuration scenarios.

[0015] In a possible implementation, any two non-overlapping first time-frequency resource units in the time domain overlap, partially overlap, or do not overlap in the frequency domain position; or, any two non-overlapping first time-frequency resource units in the frequency domain overlap, partially overlap, or do not overlap in the time domain position.

[0016] In a possible implementation, the time domain lengths of different second time-frequency resource units are the same or different; and / or, the frequency domain widths of different second time-frequency resource units are the same or different.

[0017] In a possible implementation, any two non-overlapping second time-frequency resource units in the time domain overlap, partially overlap, or do not overlap in the frequency domain position; or, any two non-overlapping second time-frequency resource units in the frequency domain overlap, partially overlap, or do not overlap in the time domain position.

[0018] In a possible implementation, the third indication information is sent when there may be interference in information transmission according to the first frame structure pattern. When interference may occur, the second frame structure pattern can change some or all of the information types in the first frame structure pattern, thus helping to reduce CLI and self-interference and thus helping to improve the transmission quality; or, the first indication information and the third indication information are sent periodically, and the sending period of the third indication information is less than the sending period of the first indication information. In this case, the first node can periodically adjust the information type indicated by the first frame structure pattern through the second frame structure pattern indicated by the third indication information.

[0019] In a possible implementation, the priority of the third indication information is higher than that of the first indication information. In the traditional frame structure indication method, only the information type of the time-frequency resource unit for flexible scheduling can be further indicated. If the time-frequency resource unit that has been indicated by the first indication information as being for uplink transmission or downlink transmission is further indicated by the third indication information as being for other transmissions, then the receiving second node will discard the third indication information and still perform information transmission with the first node according to the first frame structure pattern indicated by the first indication information. However, in the implementation provided in the embodiments of the present application, since the priority of the third indication information is relatively high, the second node will no longer discard the third indication information, but will perform information transmission according to the second frame structure pattern indicated by the third indication information in the second target resource, and perform information transmission according to the first frame structure pattern on the resources other than the second target resource in the first target resource.

[0020] In a possible implementation, the third indication information includes at least one of the following: the position information of the one or more second time-frequency resource units on the second target resource; the position information of the second target resource on the first target resource.

[0021] In a possible implementation, the first indication information includes at least one of the following: the position information of the plurality of first time-frequency resource units on the first target resource; the position information of the first target resource on the available time-frequency resources.

[0022] In a possible implementation, the first indication information includes the identifier of the first frame structure pattern, or the first indication information includes the matrix corresponding to the first frame structure pattern, and the value of each element in the matrix represents the information type used for transmission by the first time-frequency resource unit at the corresponding position in the first frame structure pattern.

[0023] In a possible implementation, the first target resource is a continuous frequency-domain resource or a discontinuous frequency-domain resource in the frequency domain; and / or, the first target resource is a continuous time-domain resource or a discontinuous time-domain resource in the time domain.

[0024] In a second aspect, an embodiment of the present application provides a frame structure indication method, the method including: receiving first indication information, where the first indication information is used to determine a first frame structure pattern, the first frame structure pattern is used to indicate the information types respectively used for transmission by a plurality of first time-frequency resource units included in a first target time-frequency resource, the frequency-domain width of the first time-frequency resource unit is less than the total frequency-domain width of the first target time-frequency resource, and the first frame structure pattern includes at least two first time-frequency resource units in the frequency domain; performing information transmission according to the first frame structure pattern.

[0025] In a possible implementation, the method further includes: receiving second indication information, where the second indication information is used to indicate the frequency domain width and / or time domain length of each of the first time-frequency resource units.

[0026] In a possible implementation, after information transmission according to the first frame structure pattern, the method further includes: receiving third indication information, where the third indication information is used to determine a second frame structure pattern, and the second frame structure pattern is used to indicate the information type to be transmitted by one or more second time-frequency resource units included in a second target resource, and the second target resource is a subset of the first target resource; performing information transmission on the second target resource according to the second frame structure pattern; and performing information transmission on the resources in the first target resource other than the second target resource according to the first frame structure pattern.

[0027] In a possible implementation, the method further includes: receiving fourth indication information, where the fourth indication information is used to indicate the frequency domain width and / or time domain length of each of the second time-frequency resource units.

[0028] In a possible implementation, the information type includes at least one of the following: uplink transmission, downlink transmission, full-duplex transmission, or flexible scheduling.

[0029] In a possible implementation, the first target resource includes at least two of the first time-frequency resource units in the time domain, and the time domain lengths of the at least two first time-frequency resource units are the same or different.

[0030] In a possible implementation, the time domain lengths of different first time-frequency resource units are the same or different; and / or, the frequency domain widths of different first time-frequency resource units are the same or different.

[0031] In a possible implementation, any two first time-frequency resource units that do not overlap in the time domain overlap, partially overlap, or do not overlap in the frequency domain position; or, any two first time-frequency resource units that do not overlap in the frequency domain overlap, partially overlap, or do not overlap in the time domain position.

[0032] In a possible implementation, the time domain lengths of different second time-frequency resource units are the same or different; and / or, the frequency domain widths of different second time-frequency resource units are the same or different.

[0033] In a possible implementation, any two second time-frequency resource units that do not overlap in the time domain overlap, partially overlap, or do not overlap in the frequency domain position; or, any two second time-frequency resource units that do not overlap in the frequency domain overlap, partially overlap, or do not overlap in the time domain position.

[0034] In a possible implementation, the third indication information is sent when there may be interference in information transmission according to the first frame structure pattern; or, the first indication information and the third indication information are sent periodically, and the transmission period of the third indication information is less than the transmission period of the first indication information.

[0035] In a possible implementation, the priority of the third indication information is higher than that of the first indication information.

[0036] In a possible implementation, the third indication information includes at least one of the following: the position information of the one or more second time-frequency resource units on the second target resource; the position information of the second target resource on the first target resource.

[0037] In a possible implementation, the first indication information includes at least one of the following: the position information of the multiple first time-frequency resource units on the first target resource; the position information of the first target resource on the available time-frequency resources.

[0038] In a possible implementation, the first indication information includes the identifier of the first frame structure pattern, or the first indication information includes the matrix corresponding to the first frame structure pattern, and the value of each element in the matrix represents the information type to be transmitted by the first time-frequency resource unit at the corresponding position in the first frame structure pattern.

[0039] In a possible implementation, the first target resource is a continuous frequency-domain resource or a discontinuous frequency-domain resource in the frequency domain; and / or, the first target resource is a continuous time-domain resource or a discontinuous time-domain resource in the time domain.

[0040] In a third aspect, an embodiment of the present application provides a communication device, which includes: a processor, the processor is coupled to a memory, and the memory is used to store programs or instructions. When the programs or instructions are executed by the processor, the device executes the method according to the first aspect and any possible implementation manner of the first aspect.

[0041] In a fourth aspect, an embodiment of the present application provides a communication device, which includes: a processor, the processor is coupled to a memory, and the memory is used to store programs or instructions. When the programs or instructions are executed by the processor, the device executes the method according to the second aspect and any possible implementation manner of the second aspect.

[0042] In a fifth aspect, an embodiment of the present application provides a chip, including: a processor, which is coupled to a memory for storing instructions. When the instructions are executed by the processor, the chip implements the methods described in the first aspect to the second aspect and any one of their implementation manners above.

[0043] In a sixth aspect, an embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores instructions. When the instructions run on a computer, the computer executes the methods described in the first aspect to the second aspect and any one of their implementation manners.

[0044] In a seventh aspect, an embodiment of the present application provides a computer program product containing instructions. When it runs on a computer, the computer executes the methods described in the first aspect to the second aspect and any one of their implementation manners.

[0045] For the technical effects that can be achieved by any one of the second aspect to the seventh aspect above, reference can be made to the corresponding technical effects that can be achieved by the first aspect above, and the repeated parts will not be elaborated. Description of the Drawings

[0046] FIG. 1(a) and FIG. 1(b) are schematic diagrams of a traditional frame structure provided by an embodiment of the present application;

[0047] FIG. 2(a), FIG. 2(b), FIG. 2(c), FIG. 2(d), FIG. 2(e), and FIG. 2(f) are schematic diagrams of an application scenario provided by an embodiment of the present application;

[0048] Figure 3 is a schematic flowchart of a frame structure indication method provided by an embodiment of the present application;

[0049] Figure 4 is a schematic diagram of a first frame structure pattern provided by an embodiment of the present application;

[0050] Figure 5 is another schematic diagram of a first frame structure pattern provided by an embodiment of the present application;

[0051] Figure 6 is yet another schematic diagram of a first frame structure pattern provided by an embodiment of the present application;

[0052] Figure 7 is a schematic diagram of a frame structure provided by an embodiment of the present application;

[0053] Figure 8 is a schematic diagram of a first frame structure pattern and a second frame structure pattern provided by an embodiment of the present application;

[0054] Figure 9 is another schematic diagram of a first frame structure pattern and a second frame structure pattern provided by an embodiment of the present application;

[0055] Figure 10 Schematic diagrams of another first frame structure pattern and second frame structure pattern provided by an embodiment of the present application;

[0056] Figure 11 Schematic diagram of a larger pattern of the first frame structure pattern provided by an embodiment of the present application;

[0057] Figure 12 Schematic diagram of a smaller pattern of the second frame structure pattern provided by an embodiment of the present application;

[0058] Figs. 13(a), 13(b), and 13(c) are schematic diagrams of CLI and self-interference provided by an embodiment of the present application;

[0059] Figure 14 Schematic diagrams of another first frame structure pattern and second frame structure pattern provided by an embodiment of the present application;

[0060] Figure 15 Schematic diagram of the structure of a communication device provided by an embodiment of the present application;

[0061] Figure 16 Schematic diagram of the structure of another communication device provided by an embodiment of the present application. Detailed implementation manners

[0062] Sub-band full duplex (SBFD) can be implemented based on the frame structure configuration of the current time division duplex (TDD) architecture. For example, the base station can first semi-statically configure the TDD frame structure, and then can dynamically indicate the subbands used for uplink (UL) transmission on the semi-statically configured downlink (DL) symbols or flexible symbols.

[0063] When configuring the TDD frame structure, it is configured in units of available bandwidth in the frequency domain and usually in units of OFDM symbols in the time domain. However, in the SBFD scenario, different frequency domain resources on the same time domain symbol can be respectively used for uplink transmission and downlink transmission. That is to say, the frequency domain can be divided into smaller units to achieve uplink and downlink transmissions at different frequency domain positions at the same time.

[0064] The following is an example with reference to Figs. 1(a) and 1(b). For the frame structure shown in Fig. 1(a), when semi-statically configured, symbols 1 to 4 can be first configured as DL symbols, and symbol 5 as a UL symbol; when dynamically indicating, it can be dynamically indicated that on symbols 1 to 4, sub-band 2 is used for UL transmission. For the frame structure shown in Fig. 1(b), when semi-statically configured, symbols 1 to 4 can be first configured as DL symbols, and symbol 5 as a UL symbol; when dynamically indicating, it can be dynamically indicated that on symbols 1 to 4, sub-band 1 is used for UL transmission.

[0065] However, the TDD-based frame structure configuration method may cause resource conflicts. For example, if an OFDM symbol is configured as a DL symbol in semi-static configuration, but part or all of the frequency domain resources of this OFDM symbol are configured for uplink transmission in dynamic indication; since the priority of the indication information in semi-static configuration is usually higher than that of the dynamic indication information, the user equipment (UE) may discard the dynamic indication and continue to perform downlink transmission on this OFDM symbol. Another example, if an OFDM symbol is configured as a UL symbol in semi-static configuration, but part or all of the frequency domain resources of this OFDM symbol are configured for downlink transmission in dynamic indication; since the priority of the indication information in semi-static configuration is usually higher than that of the dynamic indication information, the UE may discard the dynamic indication and continue to perform uplink transmission on this OFDM symbol. Still another example, if an OFDM symbol is configured to transmit synchronization signal and physical broadcast channel block (SSB) in semi-static configuration, but part or all of the frequency domain resources of this OFDM symbol are configured for uplink transmission in dynamic indication; since the priority of the indication information in semi-static configuration is usually higher than that of the dynamic indication information, the user equipment (UE) may discard the dynamic indication and continue to receive SSB on this OFDM symbol.

[0066] In view of this, embodiments of the present application provide a new frame structure indication method for implementing frame structure configuration in the SBFD scenario to avoid the problem of possible conflicts in the TDD-based frame structure configuration.

[0067] The frame structure indication method provided by embodiments of the present application can be applied to a wireless communication system, such as a 5G communication system, a satellite communication system, a vehicle to everything (V2X) system, etc., as shown in FIGS. 2(a), 2(b), and 2(c). The communication system architecture shown in FIG. 2(a) may include a terminal device and a radio access network (RAN) device. The satellite communication system shown in FIG. 2(b) may include a terminal device and a communication satellite. The V2X communication scenario shown in FIG. 2(c) includes terminal device 1 and terminal device 2, and further may include an RAN device. The frame structure indication method provided by embodiments of the present application is applied to the communication between terminal device 1 and terminal device 2.

[0068] Among them, a radio access network (RAN) device is used to implement functions related to wireless access. The radio access network can also be referred to as an access network device or a base station, and is used to connect a terminal to a wireless network. The radio access network can be a base station, an evolved node B (eNodeB) in an LTE system or an evolved LTE system (LTE-advanced, LTE-A), a next generation NodeB (gNB) in a 5G communication system, a transmission reception point (TRP), a base band unit (BBU), a WiFi access point (AP), a base station in a future mobile communication system, or an access node in a WiFi system, etc. The radio access network can also be a module or unit that completes some functions of a base station. For example, it can be a CU, a DU, a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The RAN can also be an open RAN (O-RAN or ORAN). In an ORAN system, the CU can also be called an O-CU (open CU), the DU can also be called an O-DU, the CU-CP can also be called an O-CU-CP, the CU-UP can also be called an O-CU-UP, and the RU can also be called an O-RU. The specific technologies and specific device forms adopted by the radio access network in the embodiments of the present application are not limited. In the following embodiments, the radio access network is referred to as RAN for illustrative purposes.

[0069] A terminal device is a device with wireless transceiver functions. The terminal device is connected to a radio access network device wirelessly, thereby accessing the communication system. The terminal device can also be referred to as a terminal, UE, mobile station, mobile terminal, etc. The terminal device can be a mobile phone, a tablet computer, a personal digital assistant (PDA), a computer with wireless transceiver functions, a wireless data card, a wireless modem (modulator demodulator, Modem), a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a whole vehicle, a wireless communication module in the whole vehicle, a telematics box (T-box), a road site unit (RSU), a terminal device in unmanned driving, a terminal device in the internet of things (IoT) network, a terminal device in remote medical, a terminal device in a smart grid, a terminal device in transportation safety, a terminal device in a smart city, or a terminal device in a smart home, etc. The embodiments of the present application are not limited thereto. For the convenience of description, the UE will be taken as an example in the following embodiments of the present application.

[0070] A communication satellite can be used as a RAN device to connect to a ground station, and the ground station can be connected to the core network through a wireless or wired link. The ground terminal device communicates with the satellite base station through the air interface, thereby accessing the mobile communication network. The communication satellite, as a RAN device, is connected to the ground station through the air interface NG interface; the ground station is connected to the core network through the NG interface, and the NG interface can be in a wireless form or a wired form. The downlink data sent by the communication satellite to the terminal device is the data after channel coding. The communication satellite modulates the data after channel coding and then transmits it to the terminal device; similarly, the uplink data sent by the terminal device to the communication satellite can also be the data after channel coding, and after being modulated after channel coding, it is transmitted to the communication satellite.

[0071] Alternatively, the communication satellite can also be a transmission node between the ground terminal device and the ground RAN device. That is to say, the base station is deployed on the ground, the satellite is connected to the ground station through the air interface, and the ground station can be connected to the base station through a wireless or wired link; the ground terminal device accesses the mobile communication network through the air interface (which can be various types of air interfaces, such as the 5G air interface), and the satellite, as a transmission node, forwards the information of the terminal device.

[0072] The above-mentioned communication satellite can refer to an unmanned aerial vehicle, a hot air balloon, a low-earth orbit satellite, a medium-earth orbit satellite, a geostationary orbit satellite, etc. The communication satellite can also refer to a non-ground base station or a non-ground device, etc.

[0073] It should be noted that the wireless communication system mentioned in the solution of the present invention includes but is not limited to: narrow band-internet of things (NB-IoT), global system for mobile communications (GSM), enhanced data rate for GSM evolution (EDGE), wideband code division multiple access (WCDMA), code division multiple access 2000 (CDMA2000), time division-synchronization code division multiple access (TD-SCDMA), long term evolution (LTE), and the three application scenarios of the next-generation 5G mobile communication system: enhanced mobile broadband (eMBB), URLLC, and enhanced machine type communication (eMTC).

[0074] In addition, the frame structure indication method provided in the embodiments of this application can also be applied to satellite - to - satellite communication. A satellite inter - satellite link communication system may include an APT subsystem and a communication subsystem, as shown in Figure 2(d). Among them, the communication subsystem is responsible for the transmission of inter - satellite information and is the main body of the inter - satellite communication system. The APT subsystem is responsible for capture, alignment, and tracking between satellites; specifically, determining the direction of arrival of the incident signal is capture, adjusting the transmitted wave to aim at the receiving direction is alignment, and continuously adjusting alignment and capture during the entire communication process is tracking. In order to minimize the attenuation and interference effects in the channel while ensuring high confidentiality and transmission rate, the APT can be dynamically adjusted to continuously adapt to changes in satellite positions, inter - satellite environments, etc. Currently, most APT subsystems are optical systems; most communication subsystems are optical communication systems, and there are also some systems in the microwave band, mostly using a single high - gain antenna. Currently, most APT subsystems and communication subsystems are independent systems.

[0075] The frame structure indication method provided in the embodiments of this application can also be applied to wireless screen mirroring, VR games, data encoding and decoding in mobile phone software (application, APP), etc. Taking wireless screen mirroring as an example, the schematic diagram of the application scenario can be as shown in Figure 2(e).

[0076] The frame structure indication method provided in the embodiments of this application can also be applied to the integrated access and backhaul (IAB) scenario. As shown in Figure 2(f), the IAB communication scenario may include an IAB donor, an IAB node, and a terminal device. The link between the IAB donor and the IAB node can be called the backhaul link, and the link between the terminal device and the IAB node can be called the access link.

[0077] Regarding the product form of the terminal device shown in Figure 2(e) and Figure 2(f), the embodiments of this application do not make any limitations, and reference can be made to the terminal devices in Figure 2(a), Figure 2(b), and Figure 2(c).

[0078] The flowchart of the frame structure indication method provided in the embodiments of this application can be as Figure 3 shown and may include the following steps:

[0079] Step 301: The first node sends first indication information, where the first indication information is used to indicate the first frame structure pattern.

[0080] Among them, the first node may be a radio access network device in a wireless communication system, such as a gNB in a 5G communication system; correspondingly, the second node receiving the first indication information may be a terminal device. The first node may also be a communication satellite in a satellite communication system; correspondingly, the second node receiving the first indication information may be a terminal device or another communication satellite. The first node may also be an IAB node or an IAB parent node in an IAB communication scenario; correspondingly, the second node receiving the first indication information may be a terminal device. The first node may also be a TV in wireless screen mirroring, or a device interacting with a terminal device in a VR scenario, etc.; correspondingly, the second node receiving the first indication information may be a terminal device. The first node and the second node may also be different terminal devices in a V2X communication scenario. In addition, the first node and the second node may also be other devices, which are not limited in the embodiments of the present application.

[0081] The first frame structure pattern is used to indicate the information types corresponding to multiple first time-frequency resource units included in the first target time-frequency resource for transmission. Among them, the frequency-domain width of the first time-frequency resource unit is less than the available frequency band bandwidth; the first frame structure pattern includes at least two first time-frequency resource units in the frequency domain and one or more first time-frequency resource units in the time domain.

[0082] Optionally, the information types for transmission may include uplink transmission, downlink transmission, full-duplex transmission, or flexible scheduling.

[0083] In a traditional TDD frame structure, the resources indicated by the frame structure have only one time-frequency resource unit in the frequency domain, that is, the frequency-domain bandwidth. That is to say, in a traditional frame structure, all the frequency-domain resources corresponding to a time-frequency resource unit are either all used for uplink transmission, all used for downlink transmission, or all used for flexible scheduling. However, in the embodiments of the present application, the available frequency-domain bandwidth can be divided into multiple first time-frequency resource units, and different first time-frequency resource units in the same time domain can correspond to different information types, that is, in the same time, different first time-frequency resource units can perform information transmission in different directions.

[0084] For example, Figure 4 Exemplarily, a first frame structure pattern applicable to the embodiments of the present application is provided. As shown in the figure, the first target resource includes 18 time-frequency resource units. Among them, time-frequency resource units 1-3 are used for downlink transmission, time-frequency resource units 4-6 are used for flexible scheduling, time-frequency resource units 7-12 are used for uplink transmission, time-frequency resource units 13-15 are used for flexible scheduling, and time-frequency resource units 16-18 are used for downlink transmission. In Figure 4In the example shown, the three time-frequency resource units included in each row overlap in the frequency domain, and the time-frequency resource units in different rows do not overlap in the frequency domain; the six time-frequency resource units included in each column overlap in the time domain, but the time-frequency resource units in different columns do not overlap in the time domain.

[0085] For another example, Figure 5 An exemplary first frame structure pattern applicable to the embodiments of the present application is provided. As shown in the figure, the first target resource includes 18 time-frequency resource units. Among them, time-frequency resource units 1-3 are used for full-duplex (FD) transmission, time-frequency resource units 4-6 are used for flexible scheduling, time-frequency resource units 7-9 are used for uplink transmission, time-frequency resource units 10-12 are used for full-duplex transmission, time-frequency resource units 13-15 are used for flexible scheduling, and time-frequency resource units 16-18 are used for downlink transmission. In Figure 5 In the example shown, the three time-frequency resource units included in each row overlap in the frequency domain, and the time-frequency resource units in different rows do not overlap in the frequency domain; the six time-frequency resource units included in each column overlap in the time delay, but the time-frequency resource units in different columns do not overlap in the time domain.

[0086] For another example, Figure 6 Another exemplary first frame structure pattern is provided. As described in the figure, the first target resource includes 10 time-frequency resource units. Time-frequency resource unit 1 is used for downlink transmission; time-frequency resource units 2-4 are respectively used for flexible scheduling, flexible scheduling, and uplink transmission; time-frequency resource units 5-6 are used for flexible scheduling, time-frequency resource units 7-8 are used for uplink transmission; time-frequency resource unit 9 is used for flexible scheduling, and time-frequency resource unit 10 is used for downlink transmission. In Figure 6 In the example shown, time-frequency resource unit 2, time-frequency resource unit 3, and time-frequency resource unit 4 overlap in the frequency domain and do not overlap with other time-frequency resource units in the frequency domain; time-frequency resource unit 5 partially overlaps with time-frequency resource units 7 and 8 in the frequency domain, but does not overlap with other time-frequency resource units in the frequency domain; time-frequency resource unit 5 overlaps with time-frequency resource unit 6 in the time domain, partially overlaps with time-frequency resource units 1, 9, and 10 in the time domain, and does not overlap with time-frequency resource units 7 and 8 in the time domain.

[0087] In Figure 4 and Figure 5 In the first frame structure patterns shown, the multiple first time-frequency resource units included are of the same size in the frequency domain and the time domain; while in Figure 6In the first frame structure pattern shown, the sizes of multiple first time-frequency resource units included can be different in the frequency domain and the time domain. In an embodiment of the present application, if the sizes of multiple first time-frequency resource units included in the first frame structure pattern are the same in the frequency domain and the time domain, it can be called a regular frame structure pattern; if the sizes of multiple first time-frequency resource units included in the first frame structure pattern are not completely the same in the frequency domain and the time domain, it can be called an irregular frame structure pattern.

[0088] For the regular frame structure pattern, since the sizes of the first time-frequency resource units are the same in the frequency domain and the time domain, the indication process is simple and it is convenient for the second node to understand. For the irregular frame structure pattern, since the sizes of the first time-frequency resource units are not completely the same in the frequency domain and the time domain, the resource allocation is more flexible and variable, and it can adapt to more resource allocation scenarios.

[0089] In a possible implementation manner, the first indication information may include an identifier of the first frame structure pattern. Multiple frame structure patterns can be pre-configured, and a corresponding identifier is configured for each frame structure pattern; then when the first node sends the first indication information, it only needs to carry the identifier of the frame structure pattern to be indicated, and the second node receiving the first indication information can determine the frame structure pattern corresponding to the identifier according to the identifier. For example Figure 4 the identifier corresponding to the first frame structure pattern shown is 1, Figure 5 the identifier corresponding to the first frame structure pattern described is 2, Figure 6 the identifier corresponding to the first frame structure pattern described is 3; if the identifier indicated by the first indication information is 1, it means the first frame structure pattern is Figure 4 the frame structure pattern shown; if the identifier indicated by the first indication information is 3, it means the first frame structure pattern is Figure 6 the frame structure pattern shown.

[0090] In another possible implementation manner, the first indication information may also include a matrix corresponding to the first frame structure pattern. For example, when the first node wants to indicate the frame structure pattern as Figure 4 shown, the first indication information may indicate the matrix

[0091] In a specific example, the frame structure can be predefined. In an embodiment of the present application, the transmission information of each resource unit in the "frame structure pattern" is determined, as Figures 4 to 6 shown; while the "frame structure" can give the included time-frequency resource units and the positional relationship between multiple time-frequency resource units, but the transmission information corresponding to the time-frequency resource units is not determined. For example Figure 7 an exemplary frame structure is given. Then, the information type corresponding to each time-frequency resource unit in the frame structure is indicated through the first indication information. For example, it can be indicated in the form of a matrix.

[0092] Optionally, the first indication information may further include the position information of the above one or more first time-frequency resource units on the first target resource, and / or may also include the position information of the first target resource on the available time-frequency resources of the second node. For example, the first indication information may include the start position and / or end position of the first target resource in the time domain, and may also include the start position and / or end position of the first target resource in the frequency domain. For another example, the first indication information may also include the start position and / or end position of at least one first time-frequency resource unit in the first target resource in the time domain, and the start position and / or end position in the frequency domain.

[0093] Optionally, the first target resource may be a continuous resource or a discontinuous resource in the frequency domain; the first target resource may be a continuous resource or a discontinuous resource in the time domain.

[0094] Step 302: The first node and the second node perform information transmission according to the first frame structure pattern.

[0095] According to the first frame structure pattern, the first node can determine which resources on the first target resource can send information to the second node and which resources can receive information sent by the second node, so as to communicate with the second node.

[0096] The second node determines the information types corresponding to the multiple first time-frequency resource units on the first target resource according to the first frame structure pattern, that is, each first time-frequency resource unit is used for uplink transmission, downlink transmission, full-duplex transmission or for flexible scheduling. Then the second node can determine which resources on the first target resource can be used to send information to the first node and which resources can receive information sent by the first node, so as to communicate with the first node.

[0097] In the traditional frame structure indication method, the frame structure pattern only includes one resource unit in the frequency domain, and its width in the frequency domain is equal to the available frequency band width. Therefore, the traditional frame structure indication method can only be applied to the TDD mode and cannot be applied to more flexible scenarios. In the above embodiments of the present application, the first node can indicate, to one or more second nodes through the first indication information, the information type used for transmission of each first resource unit in the first frame structure pattern; and the target resources corresponding to the first frame structure pattern at least include two first time-frequency resource units in the frequency domain. Therefore, the width of the first time-frequency resource unit in the frequency domain is less than the available frequency band width. Since the target resources at least include two first time-frequency resource units in the frequency domain, different time-frequency resource units in the same time domain can correspond to different information types, so that uplink transmission, downlink transmission, full-duplex transmission or flexible scheduling can be performed through different time-frequency resource units within the same time period, thereby realizing more flexible resource scheduling to meet communication requirements in different situations.

[0098] Optionally, the frequency domain width of the first time-frequency resource unit can be X resource blocks (RB), can be X resource block groups (RBG), can be X physical resource blocks (PRB), X resource elements (RE), can be X predefined subbands, can be X predefined bandwidths (band), or can also be X Hertz (Hz), etc. Wherein, X is an integer greater than 0. For example, as Figure 4 shown, the frequency domain width of each time-frequency resource unit in the first frame structure pattern can be 12 RBs, 6 RBGs or 1 subband (such as including 10 MHz or 10 RBs), etc.

[0099] Optionally, the time domain length of the first time-frequency resource unit can be Y OFDM symbols (OS), can be Y mini-slots, can be Y slots, can be Y predefined time units, or can also be Y absolute time units (such as microseconds, milliseconds, seconds, etc.). Wherein, Y is an integer greater than 0. For example, as Figure 4 shown, the time domain length of each time-frequency resource unit in the first frame structure pattern can be 1 or more slots (1 slot includes 14 or 12 OS), or can also be 1 or more mini-slots (1 mini-slot includes 2, 3, 4 or 7 OS).

[0100] In the embodiments of the present application, the frequency domain width and / or time domain length of each first time-frequency resource unit in the first frame structure pattern may be fixed or variable. Optionally, the frequency domain width and / or time domain length of the first time-frequency resource units in different first frame structure patterns may be the same or different.

[0101] When the frequency domain width and / or time domain length of the first time-frequency resource unit is fixed, a possible design is: the frequency domain width and / or time domain length of each first time-frequency resource unit in the first frame structure pattern is pre-agreed. Then the first node does not need to add additional indication information to be sent. The second node can determine the frequency domain width and / or time domain length of each first time-frequency resource unit according to the pre-agreement. For example, it can be pre-agreed that Figure 4 in the frame structure pattern shown, the frequency domain width of each first time-frequency resource unit is X1 RBs, and the time domain length is Y1 OSs. Another example, it can be pre-agreed that Figure 6 in the frame structure pattern shown, the frequency domain width of time-frequency resource units 1, 9, and 10 is X2 RBs, and the time domain length is Y2 OSs; the frequency domain width of time-frequency resource units 2-6 is X3 RBs, and the time domain length is Y3 OSs; the frequency domain width of time-frequency resource units 7-8 is X4 RBs, and the time domain length is Y4 OSs.

[0102] When the frequency domain width and / or time domain length of the first time-frequency resource unit is fixed, another possible design is: the information of the frequency domain width and / or time domain length of the first time-frequency resource unit is carried in the information of the first frame structure pattern and sent to the second node together with the first indication information.

[0103] When the frequency domain width and / or time domain length of the first time-frequency resource unit is fixed, another possible design is: the first node can notify the second node of the frequency domain width and / or time domain length of the first time-frequency resource unit through the second indication information. Then the second node determines the first frame structure pattern and the size of each first time-frequency resource unit in the first frame structure pattern according to the first indication information and the second indication information, so as to perform information transmission with the first node. Among them, the second indication information can be sent by the first node to the second node in a static configuration manner through high-layer signaling, or the first node can also send the second indication information to the second node in a semi-static configuration manner through high-layer signaling. For example, the first node sends the first indication information indicating the use of the first frame structure pattern as shown in Figure 4 and sends the second indication information indicating that the frequency domain width of each first time-frequency resource unit in the first frame structure pattern is X1 RBs, and the time domain length is Y1 OSs. Since Figure 4The first frame structure pattern shown is a regular frame structure pattern. Therefore, the second indication information does not have to indicate the frequency-domain size of each first resource unit separately. For another example, the first indication node indicates the first frame structure pattern shown as Figure 6 through the first indication information, and indicates the frequency-domain width and / or time-domain length of each first resource unit in the first frame structure pattern through the second indication information. Since Figure 6 the first frame structure pattern shown is an irregular frame structure pattern, the second indication information can indicate the frequency-domain width and / or time-domain length of each first resource unit separately, or can indicate different frequency-domain widths (and / or time-domain lengths) and the first resource units corresponding to each frequency-domain width (and / or time-domain length).

[0104] When the frequency-domain width and / or time-domain length of the first time-frequency resource unit are not fixed, one possible design: The information of the frequency-domain width and / or time-domain length of the first time-frequency resource unit is carried in the information of the first frame structure pattern and sent to the second node together through the first indication information. Another possible design: The first node can notify the second node of the frequency-domain width and / or time-domain length of the first time-frequency resource unit through the second indication information. Then the second node determines the first frame structure pattern and the size of each first time-frequency resource unit in the first frame structure pattern according to the first indication information and the second indication information, so as to perform information transmission with the first node. Among them, the second indication information can be sent by the first node to the second node in a semi-static configuration manner through high-layer signaling, or can also be sent to the second node through dynamic indication information. In this implementation manner, the first node can adjust the frequency-domain width and / or time-domain length of the first time-frequency resource unit according to factors such as the current communication scenario, throughput, and the amount of information to be transmitted, so as to achieve more flexible resource allocation.

[0105] In one possible implementation manner, the first node can also send third indication information, and the third indication information is used to indicate the information types corresponding to one or more second time-frequency resource units included in the second target resource. The information types of the second time-frequency resource units can also include uplink transmission, downlink transmission, full-duplex transmission, or flexible scheduling. Among them, the second target resource is a subset of the first target resource, that is to say, the third indication information further indicates that part or all of the patterns in the first frame structure pattern will be changed to the second frame structure pattern. Since the first target resource can be continuous or discontinuous in the frequency domain / time domain, the second target resource can also be a continuous or discontinuous resource in the frequency domain / time domain. When sending the third indication information, the first node and the second node perform information transmission on the second target resource according to the second frame structure pattern, and perform information transmission on the resources in the first target resource other than the second target resource according to the first frame structure pattern.

[0106] For example, the first node indicates, via the first indication information, a first frame structure pattern as shown in Figure 4 . The first node may indicate, via the third indication information, a second frame structure pattern corresponding to time-delay resource units 13-15 (i.e., the second target resource), indicating that the information type to be transmitted on the second target resource will be determined according to the second frame structure pattern. Before the first node sends the third indication information, the information type of the second target resource is determined according to the first frame structure pattern, for flexible scheduling; while after sending the third indication information, the information type of the second target resource is determined according to the second frame structure pattern. For another example, the first node indicates, via the first indication information, a first frame structure pattern as shown in Figure 4 . The first node may indicate, via the third indication information, a second frame structure pattern corresponding to the first time-frequency resource units 4-9 (i.e., the second target resource), indicating that the information type of the second target resource will be determined according to the second frame structure pattern. Before the first node sends the third indication information, the information type of the second target resource is determined according to the first frame structure pattern, including both the first time-frequency resource units for flexible scheduling and the first time-frequency resource units for uplink transmission; while after sending the third indication information, the information type of the second target resource is determined according to the second frame structure pattern.

[0107] Optionally, the first node may send the third indication information after step 302 above. That is to say, the first node and the second node may first perform information transmission according to the first frame structure pattern, and when it is necessary to indicate the second frame structure pattern to be used for the second target resource in the first target resource, the first node then sends the third indication information. Alternatively, the first node may also send the third indication information after step 301, in which case the first node and the second node may directly perform information transmission according to the first frame structure pattern and the second frame structure pattern.

[0108] Similar to the first time-frequency resource, the frequency-domain width of the second time-frequency resource unit may be M RBs, M RBGs, M PRBs, M REs, may be M predefined subbands, may be M predefined bands, or may also be M Hertz (Hz), etc. Where M is an integer greater than 0. The time-domain length of the second time-frequency resource unit may be N OSs, N mini-slots, N slots, N predefined time units, or may also be N absolute time units (such as microseconds, milliseconds, seconds, etc.), etc. Where N is an integer greater than 0.

[0109] In the embodiments of the present application, the frequency domain width and / or time domain length of each second time-frequency resource unit in the second frame structure pattern may be fixed or variable. Optionally, the frequency domain width and / or time domain length of the second time-frequency resource units in different second frame structure patterns may be the same or different.

[0110] When the frequency domain width and / or time domain length of the first time-frequency resource unit is fixed, one possible design is to pre-agree on the frequency domain width and / or time domain length of each second time-frequency resource unit in the second frame structure pattern. Then, the first node does not need to add additional indication information to be sent. The second node can determine the frequency domain width and / or time domain length of each second time-frequency resource unit according to the pre-agreement. Another possible design is that the information on the frequency domain width and / or time domain length of the second time-frequency resource unit is carried in the information of the second frame structure pattern and sent to the second node together with the third indication information. Yet another possible design is that the first node can notify the second node of the frequency domain width and / or time domain length of the second time-frequency resource unit through the fourth indication information. Then, the second node determines the second frame structure pattern and the size of each second time-frequency resource unit in the second frame structure pattern according to the third indication information and the fourth indication information, so as to perform information transmission with the first node. Among them, the fourth indication information may be sent by the first node to the second node in a static configuration manner through high-layer signaling, or the first node may also send the fourth indication information to the second node in a semi-static configuration manner through high-layer signaling.

[0111] When the frequency domain width and / or time domain length of the second time-frequency resource unit is not fixed, one possible design is that the information on the frequency domain width and / or time domain length of the second time-frequency resource unit is carried in the information of the second frame structure pattern and sent to the second node together with the third indication information. Another possible design is that the first node can notify the second node of the frequency domain width and / or time domain length of the second time-frequency resource unit through the fourth indication information. Then, the second node determines the second frame structure pattern and the size of each second time-frequency resource unit in the second frame structure pattern according to the third indication information and the fourth indication information, so as to perform information transmission with the first node. Among them, the fourth indication information may be sent by the first node to the second node in a semi-static configuration manner through high-layer signaling, or it may also be sent to the second node through dynamic indication information. In this implementation manner, the first node can adjust the frequency domain width and / or time domain length of the second time-frequency resource unit according to factors such as the current communication scenario, throughput, and the amount of information to be transmitted, so as to achieve more flexible resource allocation.

[0112] The time domain lengths of one or more second time-frequency resource units indicated by the second frame structure pattern may be the same or different. That is to say, the second target resource may include second time-frequency resource units with the same time domain length, or may include second time-frequency resource units with different time domain lengths. Similarly, the frequency domain widths of one or more second time-frequency resource units indicated by the second frame structure pattern may be the same or different. That is to say, the second target resource may include second time-frequency resource units with the same frequency domain width, or may include second time-frequency resource units with different frequency domain widths.

[0113] Optionally, any second time-frequency resource unit may be the same as or different from any first time-frequency resource unit. That is to say, the time domain length of any second time-frequency resource unit may be the same as or different from the time domain length of any first time-frequency resource unit, and the frequency domain width of any second time-frequency resource unit may be the same as or different from the frequency domain width of any first time-frequency resource unit. Taking Figure 8 as an example, the first frame structure pattern is as shown in Figure 8 (a) below, and the third indication information indicates that the second frame structure pattern corresponding to the first time-frequency resource unit 8 in the first frame structure pattern is as shown in Figure 8 (b) below. It can be seen from Figure 8 (a) and (b) below that the time domain length of the second time-frequency resource unit is different from that of the first time-frequency resource unit in the first frame structure pattern; the frequency domain width of the second time-frequency resource unit is also different from that of the first resource unit in the first frame structure pattern. It should be understood that the above example is given with the frequency domain width and time domain length of the second time-frequency resource unit being different from those of the first time-frequency resource unit. However, in actual applications, one or more second time-frequency resource units may have the same frequency domain width as some or all of the first time-frequency resource units, or may have different frequency domain widths from some or all of the first time-frequency resource units; one or more second time-frequency resource units may have the same time domain length as some or all of the first time-frequency resource units, or may have different time domain lengths from some or all of the first time-frequency resource units.

[0114] Optionally, any second time-frequency resource unit may overlap, partially overlap, or not overlap with any first time-frequency resource unit in the frequency domain position. Taking Figure 9 as an example, the first frame structure pattern is as shown in Figure 9 (a) below, and the third indication information indicates that the second frame structure patterns corresponding to the time-frequency resource units 4 and 7 in the first frame structure pattern are as shown in Figure 9 (b) below. According to Figure 9As can be seen from (a) and (b) in [the figure], time-frequency resource unit one in the second frame structure pattern overlaps with time-frequency resource unit 4 in the first frame structure pattern in the frequency domain; time-frequency resource unit four in the second frame structure pattern partially overlaps with time-frequency resource unit 4 in the first frame structure pattern in the frequency domain, and also partially overlaps with time-frequency resource unit 7 in the first frame structure pattern in the frequency domain, but does not overlap with time-frequency resource units 1-3 and 10-15 in the first frame structure pattern in the frequency domain.

[0115] Optionally, any second time-frequency resource unit can overlap, partially overlap, or not overlap with any first time-frequency resource unit in the time domain position. Taking Figure 10 as an example, the first frame structure pattern is as shown in Figure 10 (a) therein, and the third indication information indicates that the second frame structure pattern corresponding to time-frequency resource units 4 and 5 in the first frame structure pattern is as shown in Figure 10 (b) therein. As can be seen from (a) and (b) in Figure 10 the time-frequency resource units one, four, and seven in the second frame structure pattern overlap with time-frequency resource unit 4 in the first frame structure pattern in the time domain, but do not overlap with time-frequency resource units 2-3, 5-6, 8-9, 11-12, 14-15, and 17-18 in the first frame structure pattern in the time domain; the time-frequency resource unit two along the frequency domain direction in the second frame structure pattern partially overlaps with time-frequency resource unit 4 in the first frame structure pattern in the time domain, and also partially overlaps with time-frequency resource unit 5 in the first frame structure pattern in the frequency domain, but does not overlap with time-frequency resource units 3, 6, 9, 12, 15, and 18 in the first frame structure pattern in the time domain.

[0116] Optionally, the third indication information may further include the position information of one or more of the above-mentioned second time-frequency resource units, and / or the position information of the second target resource unit. For example, the third indication information may include the start position and / or end position of the second target resource in the time domain, and may also include the start position and / or end position of the second target resource unit in the frequency domain. Another example is that the third indication information may also include the start position and / or end position of at least one second time-frequency resource unit in the second target resource in the time domain, as well as the start position and / or end position in the frequency domain. In a specific example, assuming that the first frame structure pattern indicated by the first indication information is the frame structure pattern shown in Figure 4 and the first node needs to further indicate the time-frequency first resource unit 4 to indicate the second frame structure pattern corresponding to the time-frequency resource unit 4, then in addition to indicating the second frame structure pattern, the third indication information may also indicate the coordinate (1, 2) to indicate the first time-frequency resource unit in the time domain and the second time-frequency resource unit in the frequency domain as the position of the second frame structure pattern.

[0117] In the embodiments of the present application, the second target resource indicated by the second frame structure pattern can be not only the first time-frequency resource unit determined according to the first frame structure pattern for flexible scheduling, but also the first time-frequency resource unit determined according to the first frame structure pattern for uplink transmission, downlink transmission or full-duplex transmission.

[0118] In the traditional frame structure indication method, only the information type of the time-frequency resource unit for flexible scheduling can be further indicated. If the time-frequency resource unit that has been indicated by the first indication information for uplink transmission or downlink transmission is further indicated by the third indication information for other transmissions, the receiving second node will discard the third indication information and still perform information transmission with the first node according to the first frame structure pattern indicated by the first indication information. However, in the embodiments of the present application, there is no restriction on the second target resource. By setting the priority of the third indication information to be higher than that of the first indication information, it is possible to indicate the second frame structure pattern by the third indication information for the time-frequency resource unit that has been indicated by the first indication information for uplink transmission, downlink transmission or full-duplex transmission, so as to determine the information type of the second time-frequency resource unit on the second target resource. Then the second node will no longer discard the third indication information, but perform information transmission on the second target resource according to the second frame structure pattern indicated by the third indication information, and perform information transmission according to the first frame structure pattern on the resources other than the second target resource in the first target resource.

[0119] In addition, the first indication information and the third indication information can also be indication information of different levels. For example, the first indication information can be cell-level indication information, and the third indication information can be user-level indication information. That is to say, the first frame structure pattern indicated by the first indication information is a frame structure pattern common to all terminal devices in the cell, and the second frame structure pattern indicated by the third indication information is a frame structure pattern for one or more terminal devices.

[0120] In the above case, the first frame structure pattern indicated by the first indication information is usually a larger pattern, that is, the time domain size and / or frequency domain size of the first resource unit is larger; while the second frame structure pattern indicated by the third indication information is a smaller pattern, that is, the time domain size of the second resource unit is smaller and / or the frequency domain size is smaller. For example, Figure 11 Exemplarily, five larger patterns applicable to the first frame structure pattern are provided; Figure 12 In (a) and (b) of, exemplarily, smaller patterns applicable to the second frame structure pattern are provided, which can be used to replace one or more first resource units in the larger pattern.

[0121] Optionally, the above third indication information may also be sent periodically. For example, the transmission period of the third indication information may be 0.5 ms, 0.625 ms, 1 ms, 10 ms, etc.

[0122] In addition, the first indication information may also be sent periodically, and the transmission period of the first indication information is greater than that of the third indication information. For example, the first indication information is cell-level indication information, which can be carried in the system broadcast message of the cell and sent to the terminal device located in the cell. Then, the transmission period of the first indication information is the same as that of the system broadcast message.

[0123] Optionally, the above third indication information may also be sent dynamically. For example, the physical layer signaling is used to send the third indication information.

[0124] Optionally, the above third indication information may be sent by the first node to the second node when it is determined that there may be interference or there is already interference when communicating according to the first frame structure pattern.

[0125] In a wireless communication system, the cross-link interference (CLI) of dynamic SBFD and the self-interference of the first node are relatively serious. Especially for URLLC services with high requirements for latency and reliability, CLI and self-interference will have a greater adverse impact on URLLC services.

[0126] As shown in Figure 13(a), if user 1 of the URLLC service is performing an uplink transmission with base station 1, and base station 2 that is relatively close to base station 1 is performing a downlink transmission with user 2, then the signal sent by base station 2 will cause CLI between base stations to the signal received by base station 1.

[0127] As shown in Figure 13(b), if user 1 of the URLLC service is performing a downlink transmission with base station 1, and user 2 that is relatively close to user 1 is performing an uplink transmission with base station 2, then the signal sent by user 2 will cause CLI between users to the signal received by user 1.

[0128] As shown in Figure 13(c), if user 1 of the URLLC service is performing an uplink transmission with base station 1, and base station 1 is also performing a downlink transmission with user 2, then the signal sent by base station 1 will cause self-interference to the signal it receives itself.

[0129] To avoid the occurrence of CLI and self-interference, before the first node performs information transmission with the second node according to the information type indicated by the first frame structure pattern, it can estimate whether CLI or self-interference will occur. For example, the first frame structure pattern is as Figure 14As shown in (a) therein, the time-frequency resource units of the shaded part can be used for uplink transmission. If downlink transmission is performed within the time-frequency resource units adjacent to the time-frequency resource units of the shaded part, base station self-interference may occur. To avoid self-interference, the base station can send the third indication information to the terminal device. The second frame structure pattern indicated by the third indication information can be as Figure 14 shown in (b) therein, where the time-frequency resource units adjacent to the shaded part are no longer used for downlink transmission, thus helping to reduce the base station self-interference problem. In Figure 14 the scenario shown, the second target resource indicated by the third indication information is the same as the first target resource. In some other embodiments, the second target resource indicated by the third indication information may also be only part of the first target resource.

[0130] Alternatively, the first node can also perform CLI measurement. If it is determined according to the measurement result that the currently generated CLI has affected or may affect the communication quality, then the first node can send the third indication information to change the information type corresponding to some or all of the time-frequency resource units in the first target resource, thereby reducing the CLI.

[0131] Alternatively, the first node can also communicate with other nodes to determine whether there is a large CLI in other nodes, or determine whether other nodes will generate a large CLI to itself; if there is a large CLI in other nodes, or whether other nodes will generate a large CLI to itself, then the first node can send the third indication information to change the information type corresponding to some or all of the time-frequency resource units in the first target resource, thereby reducing the CLI. For example, gNB1 can communicate with gNB2 to obtain whether there is a large CLI in gNB2 currently, and / or obtain the frame structure pattern 2 indicated by gNB2, and determine whether CLI will be generated when gNB2 performs information transmission according to the frame structure pattern 2 and gNB1 performs information transmission according to its own indicated frame structure pattern 1, so as to determine whether it is necessary to send the third indication information to change the information type corresponding to some or all of the time-frequency resource units in the first target resource.

[0132] In another possible implementation manner, to avoid CLI and self-interference problems, the first node can also periodically send the first indication information and the third indication information, but the sending period of the third indication information is less than the sending period of the first indication information, so that the first node can periodically adjust the information type indicated by the first frame structure pattern through the second frame structure pattern indicated by the third indication information.

[0133] Optionally, the third indication information can be sent through group common DCI (group common DCI).

[0134] Optionally, the third indication information may also be scrambled using a specific group of radio network temporary identities (RNTIs). The third indication information may also be scrambled together with a cyclic redundancy check (CRC).

[0135] Figure 15 FIG. is a schematic diagram of a communication device provided according to an embodiment of the present application. The communication device includes a processing module 1501 and a transceiver module 1502. The processing module 1501 is configured to implement data processing of the communication device. The transceiver module 1502 is configured to receive content of the communication device with other units or network elements, or send content of the communication device with other units or network elements. It should be understood that the processing module 1501 in the embodiment of the present application may be implemented by a processor or a processor-related circuit component (or, referred to as a processing circuit), and the transceiver module 1502 may be implemented by a receiver / transmitter or a receiver / transmitter-related circuit component.

[0136] Exemplarily, the communication device may be a communication device, or a chip applied to the communication device, or other combined devices, components, etc. having the functions of the above communication device.

[0137] When the communication device is a first node, the processing module 1501 sends first indication information through the transceiver module 1502. The first indication information is used to determine a first frame structure pattern. The first frame structure pattern is used to indicate information types respectively used for transmission by a plurality of first time-frequency resource units included in a first target time-frequency resource. The frequency-domain width of the first time-frequency resource unit is less than the total frequency-domain width of the first target time-frequency resource. The first frame structure pattern includes at least two first time-frequency resource units in the frequency domain. The processing module 1501 performs information transmission through the transceiver module 1502 according to the first frame structure pattern.

[0138] In addition, the above-mentioned respective modules may also be used to support Figures 3 to 14 other processes performed by the first node in the illustrated embodiment. The beneficial effects can be referred to the previous description and will not be elaborated here.

[0139] When the communication device is the second node, the processing module 1501 receives first indication information through the transceiver module 1502. The first indication information is used to determine a first frame structure pattern, and the first frame structure pattern is used to indicate the information types respectively transmitted by multiple first time-frequency resource units included in a first target time-frequency resource. The frequency-domain width of the first time-frequency resource unit is less than the total frequency-domain width of the first target time-frequency resource, and the first frame structure pattern includes at least two first time-frequency resource units in the frequency domain. The processing module 1501 performs information transmission through the transceiver module 1502 according to the first frame structure pattern.

[0140] In addition, each of the above modules can also be used to support Figures 3 to 14 other processes executed by the second node in the embodiments shown. For the beneficial effects, reference can be made to the previous description and will not be elaborated here.

[0141] Figure 16 FIG. is a schematic diagram of another communication device according to an embodiment of the present application. The communication device includes: a processor 1601, a communication interface 1602, and further may include a memory 1603 and a bus 1604. Among them, the processor 1601, the communication interface 1602, and the memory 1603 can be interconnected through the bus 1604; the bus 1604 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The above bus 1604 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 16 only one line is shown in the figure, but it does not mean that there is only one bus or one type of bus.

[0142] The processor 1601 may be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP. The processor may further include a hardware chip. The above-mentioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a Generic Array Logic (GAL), or any combination thereof. The memory 1603 may be a volatile memory or a non-volatile memory, or may include both a volatile memory and a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache.

[0143] Among them, the processor 1601 is used to implement the data processing operation of the communication device, and the communication interface 1602 is used to implement the receiving operation and the sending operation of the communication device.

[0144] When the communication device is the first node, the processor 1601 sends first indication information through the communication interface 1602. The first frame structure pattern is used to indicate the information types respectively used for transmitting by multiple first time-frequency resource units included in the first target time-frequency resource. The frequency-domain width of the first time-frequency resource unit is less than the total frequency-domain width of the first target time-frequency resource. The first frame structure pattern includes at least two first time-frequency resource units in the frequency domain; the processor 1601 performs information transmission through the communication interface 1602 according to the first frame structure pattern.

[0145] In addition, the above-mentioned various components may also be used to support Figures 3 to 14 other processes executed by the first node in the illustrated embodiment. The beneficial effects can be referred to the previous description and will not be elaborated here.

[0146] When the communication device is the second node, the processor 1601 receives first indication information through the communication interface 1602. The first indication information is used to determine a first frame structure pattern, and the first frame structure pattern is used to indicate the information types respectively transmitted by multiple first time-frequency resource units included in a first target time-frequency resource. The frequency-domain width of the first time-frequency resource unit is less than the total frequency-domain width of the first target time-frequency resource, and the first frame structure pattern includes at least two first time-frequency resource units in the frequency domain; the processor 1601 performs information transmission through the communication interface 1602 according to the first frame structure diagram.

[0147] In addition, the above-mentioned various components can also be used to support Figures 3 to 14 other processes executed by the second node in the illustrated embodiments. The beneficial effects can be referred to the previous description and will not be elaborated here.

[0148] Based on the same technical concept, an embodiment of the present application further provides a computer-readable storage medium. Computer-readable instructions are stored in the computer-readable storage medium. When the computer-readable instructions run on a computer, the method described in any of the possible implementation manners as described above is executed.

[0149] An embodiment of the present application provides a computer program product including instructions. When it runs on a computer, the method embodiments described above are executed.

[0150] An embodiment of the present application provides a chip, including: a processor, which is coupled to a memory. The memory is used to store instructions. When the instructions are executed by the processor, the chip implements the method steps executed by any of the above nodes.

[0151] In the description of the embodiments of the present application, "and / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The multiple referred to in the present application means two or more.

[0152] In addition, it should be understood that in the description of the present application, terms such as "first" and "second" are only used for the purpose of distinguishing descriptions, and should not be construed as indicating or implying relative importance, nor as indicating or implying an order. References to "one embodiment" or "some embodiments" etc. described in this specification mean that a specific feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments" etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0153] The method steps in the embodiments of the present application can be implemented in a hardware manner or by a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, a register, a hard disk, a removable hard disk, a CD-ROM, or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. Of course, the processor and the storage medium can also exist as discrete components in a base station or a terminal.

[0154] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are executed in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, or other programmable devices. The computer program or instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer program or instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center in a wired or wireless manner. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrating one or more available media. The available medium can be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; it can also be an optical medium, such as a digital video disc; or it can be a semiconductor medium, such as a solid-state drive. The computer-readable storage medium can be a volatile or non-volatile storage medium, or can include both volatile and non-volatile types of storage media.

[0155] In various embodiments of the present application, if there is no special description and logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0156] It can be understood that the various numerical numbers involved in the embodiments of the present application are only for the convenience of description and do not limit the scope of the embodiments of the present application. The magnitudes of the serial numbers of the above processes do not mean the order of execution. The order of execution of each process should be determined by its function and internal logic.

Claims

1. A frame structure indication method, characterized in that, The method includes: Sending first indication information, where the first indication information is used to determine a first frame structure pattern, and the first frame structure pattern is used to indicate the information types respectively transmitted by a plurality of first time-frequency resource units included in a first target time-frequency resource. The frequency-domain width of the first time-frequency resource unit is less than the total frequency-domain width of the first target time-frequency resource, and the first frame structure pattern includes at least two first time-frequency resource units in the frequency domain; Performing information transmission according to the first frame structure pattern.

2. The method according to claim 1, characterized in that, The method further includes: Sending second indication information, where the second indication information is used to indicate the frequency-domain width and / or time-domain length of each of the first time-frequency resource units.

3. The method according to claim 1 or 2, characterized in that, After performing information transmission according to the first frame structure pattern, the method further includes: Sending third indication information, where the third indication information is used to determine a second frame structure pattern, and the second frame structure pattern is used to indicate the information types transmitted by one or more second time-frequency resource units included in a second target resource, and the second target resource is a subset of the first target resource; Performing information transmission on the second target resource according to the second frame structure pattern; Performing information transmission on the resource in the first target resource other than the second target resource according to the first frame structure pattern.

4. The method according to claim 3, characterized in that, The method further includes: Sending fourth indication information, where the fourth indication information is used to indicate the frequency-domain width and / or time-domain length of each of the second time-frequency resource units.

5. A frame structure indication method, characterized in that, The method includes: Receiving first indication information, where the first indication information is used to determine a first frame structure pattern, and the first frame structure pattern is used to indicate the information types respectively transmitted by a plurality of first time-frequency resource units included in a first target time-frequency resource. The frequency-domain width of the first time-frequency resource unit is less than the total frequency-domain width of the first target time-frequency resource, and the first frame structure pattern includes at least two first time-frequency resource units in the frequency domain; Performing information transmission according to the first frame structure pattern.

6. The method according to claim 5, characterized in that, The method further includes: Receiving second indication information, where the second indication information is used to indicate the frequency-domain width and / or time-domain length of each of the first time-frequency resource units.

7. The method according to claim 5 or 6, characterized in that, After performing information transmission according to the first frame structure pattern, the method further includes: Receiving third indication information, where the third indication information is used to determine a second frame structure pattern, and the second frame structure pattern is used to indicate the information types transmitted by one or more second time-frequency resource units included in a second target resource, and the second target resource is a subset of the first target resource; Performing information transmission on the second target resource according to the second frame structure pattern; Performing information transmission on the resource in the first target resource other than the second target resource according to the first frame structure pattern.

8. The method according to claim 7, characterized in that, The method further includes: Receiving fourth indication information, where the fourth indication information is used to indicate the frequency-domain width and / or time-domain length of each of the second time-frequency resource units.

9. The method according to any one of claims 1-8, characterized in that, The information type includes at least one of the following: uplink transmission, downlink transmission, full-duplex transmission, or flexible scheduling.

10. The method according to any one of claims 1-9, characterized in that, The first target resource includes at least two of the first time-frequency resource units in the time domain, and the time domain lengths of the at least two first time-frequency resource units are the same or different.

11. The method according to any one of claims 1-10, characterized in that, The time domain lengths of different first time-frequency resource units are the same or different; and / or The frequency domain widths of different first time-frequency resource units are the same or different.

12. The method according to any one of claims 1-11, characterized in that, Any two first time-frequency resource units that do not overlap in the time domain overlap, partially overlap, or do not overlap in the frequency domain position; Alternatively, any two first time-frequency resource units that do not overlap in the frequency domain overlap, partially overlap, or do not overlap in the time domain position.

13. The method according to any one of claims 3-4, 7-8, characterized in that, The time domain lengths of different second time-frequency resource units are the same or different; and / or The frequency domain widths of different second time-frequency resource units are the same or different.

14. The method according to any one of claims 3-4, 7-8, 13, characterized in that, Any two second time-frequency resource units that do not overlap in the time domain overlap, partially overlap, or do not overlap in the frequency domain position; Alternatively, any two second time-frequency resource units that do not overlap in the frequency domain overlap, partially overlap, or do not overlap in the time domain position.

15. The method according to any one of claims 3-4, 7-8, 13-14, characterized in that, Any one of the first time-frequency resource units overlaps, partially overlaps, or does not overlap with any one of the second time-frequency resource units in the time domain; and / or Any one of the first time-frequency resource units overlaps, partially overlaps, or does not overlap with any one of the second time-frequency resource units in the frequency domain.

16. The method according to any one of claims 3-4, 7-8, 13-15, characterized in that, The third indication information is sent when there may be interference in information transmission according to the first frame structure pattern; or The first indication information and the third indication information are sent periodically, and the sending period of the third indication information is less than the sending period of the first indication information.

17. The method according to any one of claims 3-4, 7-8, 13-16, characterized in that, The priority of the third indication information is higher than that of the first indication information.

18. The method according to any one of claims 3-4, 7-8, 13-17, characterized in that, The third indication information includes at least one of the following: The position information of the one or more second time-frequency resource units on the second target resource; The position information of the second target resource on the first target resource.

19. The method according to any one of claims 1-18, characterized in that, The first indication information includes at least one of the following: The position information of the multiple first time-frequency resource units on the first target resource; The position information of the first target resource on the available time-frequency resources.

20. The method according to any one of claims 1-19, characterized in that, The first indication information includes the identifier of the first frame structure pattern, or the first indication information includes the matrix corresponding to the first frame structure pattern, and the value of each element in the matrix represents the type of information transmitted by the first time-frequency resource unit at the corresponding position in the first frame structure pattern.

21. The method according to any one of claims 1-20, characterized in that, The first target resource is a continuous frequency domain resource or a discontinuous frequency domain resource in the frequency domain; and / or The first target resource is a continuous time domain resource or a discontinuous time domain resource in the time domain.

22. A communication device, characterized in that, Comprising: A processor, the processor is coupled to a memory, and the memory is used to store programs or instructions. When the programs or instructions are executed by the processor, the device executes the method according to any one of claims 1-21.

23. A computer-readable storage medium, characterized in that, Instructions are stored in the computer-readable storage medium. When the instructions run on a computer, the computer executes the method according to any one of claims 1-21.

24. A computer program product containing instructions, characterized in that, When the instructions run on a computer, the computer executes the method according to any one of claims 1-21.

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