Communication method and device, network equipment and terminal equipment

Abstract

The invention provides a communication method and device, network equipment and terminal equipment. The communication method applied to network equipment comprises the following steps: communicating with terminal equipment according to a first frame structure; wherein the first frame structure sequentially comprises a first time unit, second time units and a third time unit, the first time unit is configured as a downlink resource, the third time unit is configured as an uplink resource, each second time unit comprises the same number of time frequency units, the first time frequency unit is configured as a downlink resource, and the third time unit is configured as an uplink resource. The second time frequency unit is configured as an uplink resource. The network device can communicate with different types of terminal devices according to the first frame structure, so that the flexibility of network communication can be improved, the spectrum efficiency and the frequency utilization rate can be improved, and the user experience is improved. By setting the protection time frequency unit in the first frame structure or the network device does not schedule the terminal device on the target time frequency unit, the terminal device can be prevented from receiving and transmitting at the same time and at the same frequency.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular, to a communication method and apparatus, a network device, and a terminal device. Background Art

[0002] Frequency Division Duplexing (FDD) and Time Division Duplexing (TDD) are two mainstream half-duplex modes from 2G to 5G.

[0003] As Figure 1 shown, FDD uses two symmetric frequency spectrums for transmission and reception, which are isolated by a guard band in the middle, and its uplink and downlink transmissions can be carried out simultaneously. Currently, all NTN frequency bands defined by 3GPP are FDD frequency bands.

[0004] As Figure 2 shown, TDD can perform transmission and reception through different time slots on the same frequency spectrum, and its uplink and downlink transmissions cannot be carried out simultaneously, and a conversion interval is required between the uplink and the downlink. In addition, for the TDD mode, a guard time needs to be set to prevent the terminal from transmitting and receiving simultaneously, and this guard time directly depends on the propagation delay between the terminal and the base station gNB. For satellite communication scenarios, the propagation delay between the terminal and the gNB can reach several milliseconds to hundreds of milliseconds, which results in a low spectral efficiency of the TDD mode. For example, assume that the satellite orbit height is 600 km, the terminal device UE#1 is located at the sub-satellite point (distance 600 km, one-way signal propagation delay 2 ms), and the terminal device UE#2 is located at the coverage edge point (distance 900 km, one-way signal propagation delay 3 ms). As Figure 3 shown, each cell represents 1 time slot with a duration of 1 ms, and 10 cells form a 10-ms system frame. The light gray cells represent downlink time slots, the dark gray cells represent uplink time slots, and the white cells represent the guard time. From Figure 3 it can be seen that the guard time is 2 * 3 ms = 6 ms, and the spectral efficiency is only 40%.

[0005] In-band full duplex (IBFD) means simultaneous transmission and reception on the same frequency spectrum, as Figure 4As shown in the figure, it combines the advantages of FDD and TDD, and theoretically the spectral efficiency can be doubled. However, it will introduce additional self-interference, that is, the interference of the signal sent by the base station itself to the signal received by itself. Taking the simultaneous co-frequency full-duplex base station as an example, since the self-interference of the base station is much stronger than the received uplink signal of the terminal, the base station needs to have extremely strong self-interference cancellation capabilities. In the satellite communication scenario, due to the limited power and processing capabilities of the satellite and the long distance between the satellite and the ground, the intensity of the uplink signal received on the satellite side is lower, and the self-interference cancellation algorithm on the base station side will be more complex.

[0006] Sub-band full-duplex (SBFD) is that the base station transmits and receives simultaneously on different sub-bands within the same spectrum, combining the advantages of TDD and FDD, without the need for symmetric spectrum resources, and at the same time can reduce the transmission waiting delay and improve the uplink coverage performance. Compared with simultaneous co-frequency full-duplex, sub-band full-duplex cannot achieve a doubling of spectral efficiency, but the frequency isolation between the uplink and downlink sub-bands reduces the difficulty of self-interference cancellation. Sub-band full-duplex is a key step towards simultaneous co-frequency full-duplex. For the terrestrial network, the SBFD configuration may be affected by the coexistence situation of operators. If there are TDD co-existing operators on both sides of the spectrum of the SBFD operator, the uplink sub-band can be configured in the middle of the spectrum to mitigate the adjacent frequency interference between different operators, as Figure 5 shown. If there is a co-existing operator on one side of the spectrum of the SBFD operator, then the uplink can be configured on the side far from the spectrum of the co-existing operator, as Figure 6 shown.

[0007] Since the satellite-ground propagation delay can reach several milliseconds to hundreds of milliseconds, the TA (Timing Advance) on the terminal device side, i.e., the UE side, is relatively large, and the SBFD frame structure configuration of the terrestrial network is not applicable to the satellite communication scenario. For example, assume that the satellite orbit height is 600 km, and the UE is located at the coverage edge point with a distance of 900 km, and the one-way signal propagation delay is 3 ms. As Figure 7 shown, each cell represents one time-frequency unit. Each time-frequency unit occupies one time slot, i.e., 1 ms, in the time domain and one sub-band in the frequency domain. The light gray cells represent the time-frequency units for downlink transmission, and the dark gray cells represent the time-frequency units for uplink transmission. The numbers in the time-frequency units represent the indices of the time-frequency units, where the first number represents the time slot index and the second number represents the sub-band index. It can be Figure 7 seen that the UE has the problem of simultaneous co-frequency transmit-receive self-interference in the time-frequency units (8, 2) and (2, 2). Summary of the Invention

[0008] The technical problem to be solved by the present disclosure is to overcome the defect of simultaneous co-frequency transmit-receive self-interference in the existing terminal device, and provide a communication method, device, network device and terminal device.

[0009] The present disclosure solves the above technical problems through the following technical solutions:

[0010] A first aspect of the present disclosure provides a communication method applied to a network device. The communication method includes the following steps:

[0011] Communicate with a terminal device according to a first frame structure;

[0012] Wherein, the first frame structure sequentially includes at least one first time unit, at least one second time unit, and at least one third time unit. The first time unit is configured as a downlink resource, the third time unit is configured as an uplink resource, the second time unit includes at least two time-frequency units, each second time unit includes the same number of time-frequency units, and each time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain;

[0013] Among the time-frequency units included in all second time units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

[0014] Optionally, among the time-frequency units included in all second time units, the third time-frequency unit is configured as a time-frequency resource for non-data transmission, and the third time-frequency unit is related to the signal propagation delay within the coverage range of the network device.

[0015] Optionally, before the step of communicating with the terminal device according to the first frame structure, it further includes:

[0016] Determine the transceiver state of the terminal device according to the signal propagation delay within the coverage range of the network device, the first time-frequency unit, and the second time-frequency unit;

[0017] In response to the situation that the terminal device has simultaneous co-frequency transceiver, update the corresponding first time-frequency unit and / or second time-frequency unit to the third time-frequency unit.

[0018] Optionally, the step of communicating with the terminal device according to the first frame structure specifically includes:

[0019] Communicate with the terminal device according to the time-frequency units in the first frame structure except for the target time-frequency unit; wherein, the target time-frequency unit is related to the signal propagation delay within the coverage range of the network device.

[0020] Optionally, before the step of communicating with the terminal device according to the first frame structure, it further includes:

[0021] Determine the transceiver state of the terminal device according to the signal propagation delay within the coverage of the network device, the first time-frequency unit, and the second time-frequency unit;

[0022] In response to the situation that the terminal device has simultaneous co-frequency transceiver, determine the corresponding first time-frequency unit and / or second time-frequency unit as the target time-frequency unit.

[0023] Optionally, the time length of all second time units is greater than or equal to 2 times the maximum value of the signal propagation delay within the coverage of the network device.

[0024] A second aspect of the present disclosure provides a communication method applied to a terminal device, and the communication method includes the following steps:

[0025] Communicate with the network device according to the first frame structure;

[0026] Wherein, the first frame structure sequentially includes at least one first time unit, at least one second time unit, and at least one third time unit. The first time unit is configured as a downlink resource, the third time unit is configured as an uplink resource, each second time unit includes the same number of time-frequency units, and the time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain;

[0027] Among the time-frequency units included in all second time units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

[0028] Optionally, among the time-frequency units included in all second time units, the third time-frequency unit is configured as a time-frequency resource for non-data transmission, and the third time-frequency unit is related to the signal propagation delay within the coverage of the network device.

[0029] A third aspect of the present disclosure provides a communication method applied to a network device, and the communication method includes the following steps:

[0030] Communicate with the terminal device according to the second frame structure;

[0031] Wherein, the second frame structure includes at least one time unit, the time unit includes at least two time-frequency units, and the time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain; each time unit includes the same number of first time-frequency units and second time-frequency units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

[0032] A fourth aspect of the present disclosure provides a communication method applied to a terminal device, and the communication method includes the following steps:

[0033] Communicate with a network device according to a second frame structure;

[0034] Wherein, the second frame structure includes at least one time unit, the time unit includes at least two time-frequency units, and the time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain; each time unit includes the same number of first time-frequency units and second time-frequency units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

[0035] A fifth aspect of the present disclosure provides a communication device, which is characterized in that it is applied to a network device, and the communication device includes:

[0036] A first communication module, configured to communicate with a terminal device according to a first frame structure;

[0037] Wherein, the first frame structure sequentially includes at least one first time unit, at least one second time unit, and at least one third time unit, the first time unit is configured as a downlink resource, the third time unit is configured as an uplink resource, and each second time unit includes the same number of time-frequency units, and the time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain;

[0038] Among the time-frequency units included in all second time units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

[0039] A sixth aspect of the present disclosure provides a communication device, which is applied to a terminal device, and the communication device includes:

[0040] A second communication module, configured to communicate with a network device according to a first frame structure;

[0041] Wherein, the first frame structure sequentially includes at least one first time unit, at least one second time unit, and at least one third time unit, the first time unit is configured as a downlink resource, the third time unit is configured as an uplink resource, and each second time unit includes the same number of time-frequency units, and the time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain;

[0042] Among the time-frequency units included in all second time units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

[0043] A seventh aspect of the present disclosure provides a communication device, which is applied to a network device, and the communication device includes:

[0044] A third communication module, configured to communicate with a terminal device according to a second frame structure;

[0045] Among them, the second frame structure includes at least one time unit, the time unit includes at least two time-frequency units, the time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain; each time unit includes the same number of first time-frequency units and second time-frequency units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

[0046] The eighth aspect of the present disclosure provides a communication device applied to a terminal device, and the communication device includes:

[0047] A fourth communication module for communicating with a network device according to the second frame structure;

[0048] Among them, the second frame structure includes at least one time unit, the time unit includes at least two time-frequency units, the time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain; each time unit includes the same number of first time-frequency units and second time-frequency units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

[0049] The ninth aspect of the present disclosure provides a network device, including a memory, a processor, and a computer program stored on the memory, and the processor executes the computer program to implement the steps of the methods described in the first aspect and the third aspect.

[0050] The tenth aspect of the present disclosure provides a terminal device, including a memory, a processor, and a computer program stored on the memory, and the processor executes the computer program to implement the steps of the methods described in the second aspect and the fourth aspect.

[0051] The eleventh aspect of the present disclosure provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0052] The twelfth aspect of the present disclosure provides a computer program product, including a computer program, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0053] The thirteenth aspect of the present disclosure provides a chip system, including: a processor for calling and running a computer program from a memory, so that a communication device installed with the chip system executes the methods described in the first aspect and the third aspect; or so that a communication device installed with the chip system executes the methods described in the second aspect and the fourth aspect.

[0054] On the basis of conforming to the common knowledge in the art, the above optional conditions can be combined arbitrarily to obtain various preferred embodiments of the present disclosure.

[0055] The positive and progressive effects of the present disclosure are as follows: The network device can communicate with different types of terminal devices according to the first frame structure, that is, it can be compatible with different types of terminal devices, which can not only improve the flexibility of network communication, but also improve the spectrum efficiency and frequency utilization rate, and enhance the user experience.

[0056] In some embodiments of the present disclosure, by setting a guard time-frequency unit in the first frame structure, it is also possible to prevent the terminal device from simultaneously transmitting and receiving on the same frequency.

[0057] In some embodiments of the present disclosure, the network device can achieve the effect of preventing the terminal device from simultaneously transmitting and receiving on the same frequency by not scheduling the terminal device on the target time-frequency unit, without setting a guard time-frequency unit in the first frame structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 It is a schematic diagram of the frame structure for the FDD mode.

[0059] Figure 2 It is a schematic diagram of the frame structure for the TDD mode.

[0060] Figure 3 It is a schematic diagram of the application scenario for the TDD mode.

[0061] Figure 4 It is a schematic diagram of the frame structure for the in-band full-duplex (IBFD).

[0062] Figure 5 It is a schematic diagram of a configuration structure for the semi-bidirectional full-duplex (SBFD).

[0063] Figure 6 It is a schematic diagram of another configuration structure for the SBFD.

[0064] Figure 7 It is a schematic diagram of the application scenario for the SBFD frame structure.

[0065] Figure 8 It is a schematic diagram of the application scenario for an SBFD frame structure provided by an embodiment of the present disclosure.

[0066] Figure 9 It is a flowchart of a communication method provided by Embodiment 1 of the present disclosure.

[0067] Figure 10 It is a flowchart of another communication method provided by Embodiment 1 of the present disclosure.

[0068] Figure 11 It is a flowchart of yet another communication method provided by Embodiment 1 of the present disclosure.

[0069] Figure 12 It is a schematic diagram of the application scenario for a first frame structure provided by Embodiment 1 of the present disclosure.

[0070] Figure 13 Schematic diagram of an application scenario of another first frame structure provided in Embodiment 1 of the present disclosure.

[0071] Figure 14 Schematic diagram of an application scenario of yet another first frame structure provided in Embodiment 1 of the present disclosure.

[0072] Figure 15 Schematic diagram of an application scenario of yet another first frame structure provided in Embodiment 1 of the present disclosure.

[0073] Figure 16 Schematic diagram of an application scenario of a second frame structure provided in Embodiment 3 of the present disclosure. Detailed implementation manners

[0074] The following describes exemplary embodiments of the present disclosure with reference to the accompanying drawings. Various details of the embodiments of the present disclosure are included to assist in understanding, and they should be considered merely exemplary. Therefore, those of ordinary skill in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted below.

[0075] It should be noted that the terms "first", "second", etc. involved in the present disclosure are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0076] When applying the SBFD frame structure configuration of the terrestrial network to the satellite communication scenario, there is a problem of self-interference of the UE receiving and transmitting simultaneously on the same frequency. To solve this problem, the network side can refrain from scheduling the terminal device for uplink transmission or downlink transmission on the corresponding time-frequency unit.

[0077] In a specific example, assume that the satellite orbit height is 600 km, the terminal device UE#1 is located at the coverage edge point, and the one-way signal propagation delay is 3 ms. The terminal device UE#2 is located at the sub-satellite point, and the one-way signal propagation delay is 2 ms. The network side adopts the SBFD frame structure of the terrestrial network. As Figure 8As shown, the time-frequency units corresponding to time slots 8 and 9 are both uplink time-frequency units. The frequency-domain resources within the range of time slots 0 to 7 are divided into 3 non-overlapping subbands. The middle 1 subband is used for uplink transmission, and the 2 subbands on both sides are used for downlink transmission.

[0078] For UE#1, the downlink time-frequency units {(2, 0), (3, 0), (2, 2), (3, 2)} conflict with the uplink time-frequency units {(8, 0), (9, 0), (8, 2), (9, 2)}. The network side does not schedule UE#1 for downlink transmission on the downlink time-frequency units {(2, 0), (3, 0), (2, 2), (3, 2)}, or the network side does not schedule UE#1 for uplink transmission on the uplink time-frequency units {(8, 0), (9, 0), (8, 2), (9, 2)}.

[0079] For UE#2, the downlink time-frequency units {(4, 0), (5, 0), (4, 2), (5, 2)} conflict with the uplink time-frequency units {(8, 0), (9, 0), (8, 2), (9, 2)}. The network side does not schedule UE#2 for downlink transmission on the downlink time-frequency units {(4, 0), (5, 0), (4, 2), (5, 2)}, or the network side does not schedule UE#2 for uplink transmission on the uplink time-frequency units {(8, 0), (9, 0), (8, 2), (9, 2)}.

[0080] In a specific example, the network side sends PDSCH to UE#2 and UE#1 on the downlink time-frequency units (2, 2) and (4, 2) respectively, and indicates to UE#2 and UE#1 to send HARQ-ACK information to the network side on the uplink time-frequency unit (8, 1) and the uplink time-frequency unit (2, 1) of the next system frame respectively through indication information (such as DCI). The network side avoids the problem of self-interference of the terminal receiving and transmitting on the same frequency at the same time through scheduling, and the spectral efficiency of the network side can reach 100% at most.

[0081] To solve the problem of self-interference of the UE receiving and transmitting on the same frequency at the same time, the frame structure of the communication data between the network side and the terminal side can also be improved. Some embodiments of the present disclosure provide a method for a network device to communicate with a terminal device according to a first frame structure, and some embodiments of the present disclosure provide a method for a network device to communicate with a terminal device according to a second frame structure.

[0082] The terminal device in the embodiments of the present disclosure may refer to various forms of user equipment, access terminals, user units, user stations, mobile stations, mobile terminals (MT), remote stations, remote terminals, mobile devices, user terminals, wireless communication devices, user agents or user devices. The terminal device may also be a cellular phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), handheld device with wireless communication function, computer with wireless transceiver function, Virtual Reality (VR) terminal device, Augmented Reality (AR) terminal device, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, computing device or other processing devices connected to a wireless modem, in-vehicle device, wearable device, terminal device in a 5G network or terminal device in a future evolved PLMN, etc. The embodiments of the present disclosure do not limit this.

[0083] The network device in the embodiments of the present disclosure is a device deployed in a Radio Access Network (RAN) to provide wireless communication functions. For example, the device providing base station functions in a 2G network includes a base transceiver station (BTS), the device providing base station functions in a 3G network includes a NodeB, the device providing base station functions in a 4G network includes an evolved NodeB (eNB), in a wireless local area network (WLAN), the device providing base station functions is an access point (AP), the device providing base station functions in 5G NR is a gNB, and the next-generation evolved NodeB (ng-eNB). Among them, NR technology is used for communication between the gNB and the terminal, and E-UTRA (Evolved Universal Terrestrial Radio Access) technology is used for communication between the ng-eNB and the terminal. Both the gNB and the ng-eNB can be connected to a 5G core network (CN). The network device in the embodiments of the present disclosure also includes devices providing base station functions in future new communication systems, etc. The embodiments of the present disclosure do not limit this.

[0084] Embodiment 1

[0085] Figure 9 It is a schematic flowchart of a communication method provided in this embodiment. This communication method can be executed by a communication device, which can be implemented in a software and / or hardware manner, and the communication device can be part or all of the network device. The communication method provided in this embodiment will be introduced below with the network device as the execution subject.

[0086] As Figure 9 shown, the communication method provided in this embodiment may include the following step S11:

[0087] Step S11: Communicate with the terminal device according to the first frame structure.

[0088] Among them, the first frame structure sequentially includes at least one first time unit, at least one second time unit, and at least one third time unit. The first time unit is configured as a downlink resource, the third time unit is configured as an uplink resource, the second time unit includes at least two time-frequency units, and each second time unit includes the same number of time-frequency units. Each time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain. Among the time-frequency units included in all second time units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

[0089] Among them, the above time unit can correspond to one time slot or multiple time slots.

[0090] In a specific example, the network device communicates with a first type of terminal device according to the first frame structure, and this terminal device communicates with the network device according to the first frame structure. For example, the network device sends first data to this terminal device according to the first frame structure, and this terminal device sends second data to the network device according to the first frame structure, that is, the network device and the terminal device communicate using the same frame structure.

[0091] In another specific example, the network device communicates with a second type of terminal device according to the first frame structure, and this terminal device communicates with the network device according to the TDD frame structure. For example, the network device sends third data to this terminal device according to the first frame structure, and this terminal device sends fourth data to the network device according to the TDD frame structure, that is, the network device and the terminal device communicate using different frame structures. Among them, the terminal device in this example can also be called a TDD terminal.

[0092] In this embodiment, the network device can communicate with different types of terminal devices according to the first frame structure, that is, it can be compatible with different types of terminal devices, which can not only improve the flexibility of network communication, but also improve the spectrum efficiency and frequency utilization rate, and enhance the user experience.

[0093] In an optional implementation manner, among the time-frequency units included in all the second time units, the third time-frequency unit is configured as the time-frequency resource for non-data transmission, that is, no data transmission is performed on the third time-frequency unit, and the third time-frequency unit is related to the signal propagation delay within the coverage range of the network device. Among them, there is a corresponding relationship between the signal propagation delay within the coverage range of the network device and the third time-frequency unit. After determining the signal propagation delay within the coverage range of the network device, the position and quantity of the third time-frequency unit can be determined. In a specific implementation, the signal propagation delay within the coverage range of the network device may include the minimum signal propagation delay and the maximum signal propagation delay. Therefore, there is a corresponding relationship between the set composed of the minimum signal propagation delay and the maximum signal propagation delay and the third time-frequency unit.

[0094] In this implementation manner, the third time-frequency unit can also be referred to as a protection time-frequency unit. By setting the protection time-frequency unit in the first frame structure, the terminal device can be avoided from simultaneously transmitting and receiving on the same frequency. It should be noted that in this implementation manner, the second time unit of the first frame structure includes the first time-frequency unit configured as the downlink resource, the second time-frequency unit configured as the uplink resource, and the third time-frequency unit configured as the time-frequency resource for non-data transmission.

[0095] In a specific implementation, as Figure 10 shown, the third time-frequency unit can be determined through the following steps S101 to S102:

[0096] Step S101: Determine the transceiver state of the terminal device according to the signal propagation delay within the coverage range of the network device, the first time-frequency unit, and the second time-frequency unit. In a specific implementation, in addition to considering the signal propagation delay, it is also necessary to combine the first time-frequency unit in the first time unit and the second time unit configured as the downlink resource, and the second time-frequency unit in the third time unit and the second time unit configured as the uplink resource to determine whether the transceiver state of the terminal device is simultaneous transmission and reception on the same frequency.

[0097] Step S102: In response to the situation that the terminal device has simultaneous co-frequency transceiver, update the corresponding first time-frequency unit and / or second time-frequency unit to a third time-frequency unit. If there is a situation of simultaneous co-frequency transceiver in the first time unit configured as a downlink resource and the second time-frequency unit configured as an uplink resource of the terminal device, it indicates a conflict. At this time, it is necessary to update the second time-frequency unit to a third time-frequency unit, that is, reconfigure the second time-frequency unit conflicting with the first time unit not to perform data transmission to avoid this conflict. Similarly, if there is a situation of simultaneous co-frequency transceiver in the third time unit configured as an uplink resource and the first time-frequency unit configured as a downlink resource of the terminal device, it indicates a conflict. At this time, it is necessary to update the first time-frequency unit to a third time-frequency unit, that is, reconfigure the first time-frequency unit conflicting with the third time unit not to perform data transmission to avoid this conflict.

[0098] It should be noted that the above steps S101 - S102 are executed before the above step S11.

[0099] In an alternative optional implementation, the above step S11 specifically includes: communicating with the terminal device according to the time-frequency units in the first frame structure except for the target time-frequency unit; wherein, the target time-frequency unit is related to the signal propagation delay within the coverage of the network device. The signal propagation delay within the coverage of the network device may include the minimum signal propagation delay and the maximum signal propagation delay. There is a corresponding relationship between the signal propagation delay within the coverage of the network device and the target time-frequency unit. After determining the signal propagation delay within the coverage of the network device, the position and quantity of the target time-frequency unit can be determined. In a specific implementation, the signal propagation delay within the coverage of the network device may include the minimum signal propagation delay and the maximum signal propagation delay. Therefore, there is a corresponding relationship between the set composed of the minimum signal propagation delay and the maximum signal propagation delay and the target time-frequency unit.

[0100] In this implementation, the network device can achieve the effect of avoiding the terminal device from having simultaneous co-frequency transceiver by not scheduling the terminal device on the target time-frequency unit, without the need to set a protected time-frequency unit in the first frame structure.

[0101] In a specific implementation, as Figure 11 shown, the target time-frequency unit can be determined through the following steps S103 - S104:

[0102] Step S103: Determine the transceiver state of the terminal device according to the signal propagation delay within the coverage of the network device, the first time-frequency unit, and the second time-frequency unit. The specific implementation can refer to the above step S101.

[0103] Step S104: In response to the situation that the terminal device has simultaneous co-frequency transceiver, determine the corresponding first time-frequency unit and / or second time-frequency unit as the target time-frequency unit. If there is a situation of simultaneous co-frequency transceiver in the first time unit configured as a downlink resource and the second time-frequency unit configured as an uplink resource by the terminal device, it indicates a conflict. At this time, it is necessary to determine the second time-frequency unit as the target time-frequency unit, that is, do not schedule the terminal device to perform uplink transmission in the second time-frequency unit that conflicts with the first time unit, so as to avoid this conflict. Similarly, if there is a situation of simultaneous co-frequency transceiver in the third time unit configured as an uplink resource and the first time-frequency unit configured as a downlink resource by the terminal device, it indicates a conflict. At this time, it is necessary to determine the first time-frequency unit as the target time-frequency unit, that is, do not schedule the terminal device to perform downlink transmission in the first time-frequency unit that conflicts with the third time unit, so as to avoid this conflict.

[0104] It should be noted that the above steps S103 - S104 are executed before the above step S11.

[0105] In an alternative embodiment, the time length of all second time units is greater than or equal to 2 times the maximum value of the signal propagation delay within the coverage range of the network device. In some examples, the maximum value of the signal propagation delay is also referred to as the maximum signal propagation delay.

[0106] The communication method in this embodiment will be described in detail below through Examples 1 - 3.

[0107] Example 1: Assume that the satellite orbit height is 600 km, and both the terminal device UE#1 and the terminal device UE#2 are located at the coverage edge points, and the one-way signal propagation delay is 3 ms. UE#1 and UE#2 belong to different types of terminals. UE#1 communicates with the network side using the first frame structure, and UE#2 communicates with the network side using the TDD frame structure. UE#2 can also be referred to as a TDD terminal.

[0108] In a possible implementation, in Figure 12In the first frame structure shown, time slots 0 and 1 are configured as downlink time slots, time slots 8 and 9 are configured as uplink time slots, and time slots 2 to 7 are configured as guard times. Further, the frequency-domain resources within the guard time are divided into 3 non-overlapping sub-bands. The middle sub-band is used for uplink transmission, and the two sub-bands on both sides are used for downlink transmission. Considering that the one-way signal propagation delay is 3 ms and the TA of the terminal is 6 ms, UE#1 has conflicts with the downlink time-frequency units {(2, 0), (3, 0), (2, 2), (3, 2)} in uplink time slots 8 and 9. Therefore, the downlink time-frequency units {(2, 0), (3, 0), (2, 2), (3, 2)} are updated to guard time-frequency units not used for data transmission; downlink time slots 0 and 1 will conflict with the uplink time-frequency units {(6, 1), (7, 1)}. Therefore, the uplink time-frequency units {(6, 1), (7, 1)} are updated to guard time-frequency units not used for data transmission. Among them, time slots 0 and 1 correspond to the above-mentioned first time unit, time slots 8 and 9 correspond to the above-mentioned third time unit, the downlink time-frequency unit corresponds to the first time-frequency unit in the above-mentioned second time unit, the uplink time-frequency unit corresponds to the second time-frequency unit in the above-mentioned second time unit, and the guard time-frequency unit corresponds to the third time-frequency unit in the above-mentioned second time unit. Figure 12 The first frame structure shown includes 2 first time units, 6 second time units, and 2 third time units. Among all the time-frequency units included in the second time units, there are a total of 8 first time-frequency units, 4 second time-frequency units, and 6 third time-frequency units.

[0109] The network side sends PDSCH to UE#2 and UE#1 in downlink time slot 0 and the downlink time-frequency unit (4, 2) respectively, and indicates to UE#2 and UE#1 to send HARQ-ACK information to the network side in uplink time slot 9 and the uplink time-frequency unit (2, 1) of the next system frame through indication information such as DCI. The design of the above first frame structure enables the network side to be compatible with different types of terminals, and the spectral efficiency can reach 80%.

[0110] In another possible implementation, the network side does not configure guard time-frequency units and avoids terminals from simultaneously transmitting and receiving on the same frequency through network side scheduling. For example, the network side does not schedule UE#1 for downlink transmission on the downlink time-frequency units {(2, 0), (3, 0), (2, 2), (3, 2)}, and does not schedule UE#1 for uplink transmission on the uplink time-frequency units {(6, 1), (7, 1)}. Among them, the downlink time-frequency units {(2, 0), (3, 0), (2, 2), (3, 2)} and the uplink time-frequency units {(6, 1), (7, 1)} correspond to the above-mentioned target time-frequency units, that is, the terminal device is not scheduled on the target time-frequency unit to avoid its simultaneous transmission and reception on the same frequency. This implementation enables the network side to be compatible with different types of terminals, and the spectral efficiency can reach 80%.

[0111] Example 2: Assume that the satellite orbit altitude is 600 km, and both the terminal device UE#1 and the terminal device UE#2 are located at the sub-satellite point with a one-way signal propagation delay of 2 ms. They belong to different types of terminals. UE#1 communicates with the network side using the first frame structure, and UE#2 communicates with the network side using the TDD frame structure. UE#2 can also be called a TDD terminal.

[0112] In a possible implementation, in the first frame structure as shown Figure 13 below, time slots 0, 1, and 2 are configured as downlink time slots, time slots 7, 8, and 9 are configured as uplink time slots, and time slots 3 to 6 are configured as guard times. Further, the frequency-domain resources within the guard time are divided into 3 non-overlapping sub-bands. The middle 1 sub-band is used for uplink transmission, and the 2 sub-bands on both sides are used for downlink transmission. Considering that the one-way signal propagation delay is 2 ms and the TA of the terminal is 4 ms, the downlink time-frequency units {(3, 0), (4, 0), (5, 0), (3, 2), (4, 2), (5, 2)} conflict with the uplink time slots 7, 8, and 9. Therefore, the downlink time-frequency units {(3, 0), (4, 0), (5, 0), (3, 2), (4, 2), (5, 2)} are updated to guard time-frequency units not used for data transmission; the uplink time-frequency units {(4, 1), (5, 1), (6, 1)} conflict with the downlink time slots 0, 1, and 2. Therefore, the uplink time-frequency units {(4, 1), (5, 1), (6, 1)} are updated to guard time-frequency units not used for data transmission. Among them, time slots 0, 1, and 2 correspond to the above-mentioned first time unit, time slots 7, 8, and 9 correspond to the above-mentioned third time unit, the downlink time-frequency unit corresponds to the first time-frequency unit in the above-mentioned second time unit, the uplink time-frequency unit corresponds to the second time-frequency unit in the above-mentioned second time unit, and the guard time-frequency unit corresponds to the third time-frequency unit in the above-mentioned second time unit. Figure 13 The shown first frame structure includes 3 first time units, 4 second time units, and 3 third time units. Among all the time-frequency units included in the second time units, there are a total of 2 first time-frequency units, 1 second time-frequency unit, and 9 third time-frequency units.

[0113] The network side sends PDSCH to UE#2 and UE#1 in downlink time slot 0 and the downlink time-frequency unit (6, 2) of the previous system frame respectively, and indicates to UE#2 and UE#1 to send HARQ-ACK information to the network side in uplink time slot 8 and uplink time-frequency unit (3, 1) through indication information such as DCI. The design of the above first frame structure enables the network side to be compatible with different types of terminals, and the spectrum efficiency can reach 70%.

[0114] In another possible implementation, the network side does not configure protected time-frequency units, and the network side scheduling is used to prevent the terminal from simultaneously transmitting and receiving on the same frequency. For example, the network side does not schedule UE#1 for downlink transmission on the downlink time-frequency units {(3, 0), (4, 0), (5, 0), (3, 2), (4, 2), (5, 2)}, and does not schedule UE#1 for uplink transmission on the uplink time-frequency units {(4, 1), (5, 1), (6, 1)}. Among them, the downlink time-frequency units {(3, 0), (4, 0), (5, 0), (3, 2), (4, 2), (5, 2)} and the uplink time-frequency units {(4, 1), (5, 1), (6, 1)} correspond to the above-mentioned target time-frequency units, that is, the terminal device is not scheduled on the target time-frequency unit to prevent it from simultaneously transmitting and receiving on the same frequency. This implementation can enable the network side to be compatible with different types of terminals, and the spectral efficiency can reach 70%.

[0115] Example 3: Assume that the satellite orbit altitude is 600 km, the terminal devices UE#1 and UE#3 are located at the edge points of the coverage area, and the one-way signal propagation delay is 3 ms. The terminal devices UE#2 and UE#4 are located at the sub-satellite point, and the one-way signal propagation delay is 2 ms. UE#1 and UE#2 are of the same type of terminal and communicate with the network side using the first frame structure. UE#3 and UE#4 are of the same type of terminal and communicate with the network side using the TDD frame structure. UE#3 and UE#4 can also be referred to as TDD terminals.

[0116] In one possible implementation, as in Figure 14In the first frame structure shown, time slots 0 and 1 are configured as downlink time slots, time slots 8 and 9 are configured as uplink time slots, and time slots 2 to 7 are configured as guard times. Further, the frequency-domain resources within the guard time are divided into 3 non-overlapping sub-bands. The middle 1 sub-band is used for uplink transmission, and the 2 sub-bands on both sides are used for downlink transmission. For UE#1, the downlink time-frequency units {(2, 0), (3, 0), (2, 2), (3, 2)} conflict with uplink time slots 8 and 9, and the uplink time-frequency units {(6, 1), (7, 1)} conflict with downlink time slots 0 and 1; for UE#2, the downlink time-frequency units {(4, 0), (5, 0), (4, 2), (5, 2)} conflict with uplink time slots 8 and 9, and the uplink time-frequency units {(4, 1), (5, 1)} conflict with downlink time slots 0 and 1; therefore, the time-frequency units {(2, 0), (3, 0), (2, 2), (3, 2), (4, 0), (5, 0), (4, 1), (5, 1), (4, 2), (5, 2), (6, 1), (7, 1)} are updated to guard time-frequency units not used for data transmission. Among them, time slots 0 and 1 correspond to the above-mentioned first time unit, time slots 8 and 9 correspond to the above-mentioned third time unit, the downlink time-frequency unit corresponds to the first time-frequency unit in the above-mentioned second time unit, the uplink time-frequency unit corresponds to the second time-frequency unit in the above-mentioned second time unit, and the guard time-frequency unit corresponds to the third time-frequency unit in the above-mentioned second time unit. Figure 14 The first frame structure shown includes 2 first time units, 6 second time units, and 2 third time units. Among all the time-frequency units included in the second time units, there are a total of 4 first time-frequency units, 2 second time-frequency units, and 12 third time-frequency units.

[0117] The network side sends PDSCH to UE#4 and UE#3 respectively in downlink time slots 0 and 1, and indicates to UE#4 and UE#3 to send HARQ-ACK information to the network side in uplink time slots 9 and 8 respectively through indication information such as DCI; the network side sends PDSCH to UE#2 and UE#1 respectively in downlink time-frequency units (6, 0) and (6, 2), and indicates to UE#2 and UE#1 to send HARQ-ACK information to the network side in uplink time-frequency units (2, 1) and (3, 1) of the next system frame respectively through indication information such as DCI. The design of the above first frame structure enables the network side to be compatible with different types of terminals, and the spectral efficiency can reach 60%.

[0118] In another possible implementation, the network side does not configure guard time-frequency units, and avoids terminals from simultaneously transmitting and receiving on the same frequency through network side scheduling. For example, in Figure 15In the first frame structure shown, time slots 0 and 1 are configured as downlink time slots, time slots 8 and 9 are configured as uplink time slots, and time slots 2 to 7 are configured as guard times. Further, the frequency-domain resources within the guard time are divided into 3 non-overlapping sub-bands. The middle 1 sub-band is used for uplink transmission, and the 2 sub-bands on both sides are used for downlink transmission. The network side does not schedule UE#1 for downlink transmission on the downlink time-frequency units {(2, 0), (3, 0), (2, 2), (3, 2)}, and does not schedule UE#1 for uplink transmission on the uplink time-frequency units {(6, 1), (7, 1)}; the network side does not schedule UE#2 for downlink transmission on the downlink time-frequency units {(4, 0), (5, 0), (4, 2), (5, 2)}, and does not schedule UE#2 for uplink transmission on the uplink time-frequency units {(4, 1), (5, 1)}. Among them, time slots 0 and 1 correspond to the above-mentioned first time unit, time slots 8 and 9 correspond to the above-mentioned third time unit, the downlink time-frequency unit corresponds to the first time-frequency unit in the above-mentioned second time unit, and the uplink time-frequency unit corresponds to the second time-frequency unit in the above-mentioned second time unit. Figure 15 The shown first frame structure includes 2 first time units, 6 second time units, and 2 third time units. Among all the time-frequency units included in the second time units, there are a total of 12 first time-frequency units and 6 second time-frequency units.

[0119] The network side can send PDSCH to UE#2 and UE#1 respectively on the downlink time-frequency units (2, 2) and (4, 2), and indicate to UE#2 and UE#1 to send HARQ-ACK information to the network side on the uplink time-frequency units (7, 1) and the uplink time-frequency unit (5, 1) of the next system frame respectively through indication information such as DCI. This implementation method can enable the network side to be compatible with different types of terminals, and the spectral efficiency can reach 100%.

[0120] In another possible implementation method, the network side does not configure guard time-frequency units, and avoids terminals from simultaneously transmitting and receiving on the same frequency through network side scheduling. For example, in Figure 15 In the shown first frame structure, the network side does not schedule UE#1 and UE#2 for up / downlink transmission on the time-frequency units {(2, 0), (3, 0), (2, 2), (3, 2), (4, 0), (5, 0), (4, 1), (5, 1), (4, 2), (5, 2), (6, 1), (7, 1)}. This implementation method can enable the network side to be compatible with different types of terminals, and the spectral efficiency can reach 60%.

[0121] This embodiment also provides a communication device applied to a network device. The communication device includes a first communication module configured to communicate with a terminal device according to a first frame structure. Wherein, the first frame structure sequentially includes at least one first time unit, at least one second time unit, and at least one third time unit. The first time unit is configured as a downlink resource, the third time unit is configured as an uplink resource, each second time unit includes the same number of time-frequency units, and each time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain; among the time-frequency units included in all second time units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

[0122] In an alternative embodiment, among the time-frequency units included in all second time units, the third time-frequency unit is configured as a time-frequency resource for non-data transmission, and the third time-frequency unit is related to the signal propagation delay within the coverage of the network device.

[0123] In an alternative embodiment, the communication device further includes a first determination module and a first processing module. The first determination module is configured to determine the transceiver state of the terminal device according to the signal propagation delay within the coverage of the network device, the first time-frequency unit, and the second time-frequency unit. The first processing module is configured to update the corresponding first time-frequency unit and / or second time-frequency unit to the third time-frequency unit in response to the situation that the terminal device has simultaneous co-frequency transceiver.

[0124] In an alternative embodiment, the first communication module is specifically configured to communicate with the terminal device according to the time-frequency units in the first frame structure except for the target time-frequency unit; wherein, the target time-frequency unit is related to the signal propagation delay within the coverage of the network device.

[0125] In an alternative embodiment, the communication device further includes a second determination module and a second processing module. The second determination module is configured to determine the transceiver state of the terminal device according to the signal propagation delay within the coverage of the network device, the first time-frequency unit, and the second time-frequency unit. The second processing module is configured to determine the corresponding first time-frequency unit and / or second time-frequency unit as the target time-frequency unit in response to the situation that the terminal device has simultaneous co-frequency transceiver.

[0126] In an alternative embodiment, the time length of all second time units is greater than or equal to 2 times the maximum value of the signal propagation delay within the coverage of the network device.

[0127] It should be noted that the communication device in this embodiment may specifically be a separate chip, chip module, or network device, or may also be a chip or chip module integrated within a network device.

[0128] Regarding each module / unit included in the communication device described in this embodiment, it can be a software module / unit, a hardware module / unit, or it can be partially a software module / unit and partially a hardware module / unit.

[0129] Embodiment 2

[0130] The communication method provided in this embodiment can be executed by a communication device. The communication device can be implemented in a software and / or hardware manner, and the communication device can be part or all of a terminal device. The communication method provided in this embodiment is introduced below with the terminal device as the execution entity.

[0131] The communication method provided in this embodiment may include the following step S21:

[0132] Step S21: Communicate with a network device according to a first frame structure.

[0133] Wherein, the first frame structure sequentially includes at least one first time unit, at least one second time unit, and at least one third time unit. The first time unit is configured as a downlink resource, the third time unit is configured as an uplink resource, each second time unit includes the same number of time-frequency units, and the time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain;

[0134] Among the time-frequency units included in all second time units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

[0135] It should be noted that the network device involved in this embodiment can be the network device in Embodiment 1, and the first frame structure involved in this embodiment is the same as the first frame structure in Embodiment 1. The terminal device involved in this embodiment communicates with the network device in Embodiment 1 using the same frame structure, that is, the first frame structure.

[0136] In an optional implementation manner, among the time-frequency units included in all second time units, the third time-frequency unit is configured as a time-frequency resource for non-data transmission, and the third time-frequency unit is related to the signal propagation delay within the coverage of the network device. In this implementation manner, the third time-frequency unit can also be referred to as a guard time-frequency unit. By setting a guard time-frequency unit in the first frame structure, it is possible to prevent the terminal device from simultaneously transmitting and receiving on the same frequency. It should be noted that in the second time unit of the first frame structure in this implementation manner, there is a first time-frequency unit configured as a downlink resource, a second time-frequency unit configured as an uplink resource, and a third time-frequency unit configured as a time-frequency resource for non-data transmission.

[0137] This embodiment further provides a communication device, which is applied to a terminal device. The communication device includes: a second communication module, configured to communicate with a network device according to a first frame structure; wherein, the first frame structure sequentially includes at least one first time unit, at least one second time unit, and at least one third time unit. The first time unit is configured as a downlink resource, the third time unit is configured as an uplink resource, each second time unit includes the same number of time-frequency units, and each time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain; among the time-frequency units included in all second time units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

[0138] In an alternative embodiment, among the time-frequency units included in all second time units, the third time-frequency unit is configured as a time-frequency resource for non-data transmission, and the third time-frequency unit is related to the signal propagation delay within the coverage of the network device.

[0139] It should be noted that the communication device in this embodiment may specifically be a separate chip, chip module, or terminal device, or may also be a chip or chip module integrated within the terminal device.

[0140] Regarding each module / unit included in the communication device described in this embodiment, it may be a software module / unit, a hardware module / unit, or may also be partly a software module / unit and partly a hardware module / unit.

[0141] Embodiment 3

[0142] The communication method provided in this embodiment may be executed by a communication device. The communication device may be implemented in software and / or hardware, and the communication device may be part or all of a network device. The communication method provided in this embodiment will be introduced below with the network device as the execution entity.

[0143] The communication method provided in this embodiment may include the following step S31:

[0144] Step S31: Communicate with a terminal device according to a second frame structure.

[0145] Wherein, the second frame structure includes at least one time unit, and the time unit includes at least two time-frequency units. Each time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain; each time unit includes the same number of first time-frequency units and second time-frequency units. The first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

[0146] In this embodiment, the network device can avoid the terminal device from simultaneously transmitting and receiving on the same frequency by communicating with the terminal device according to the second frame structure, thereby improving the spectrum efficiency and frequency utilization rate, and enhancing the user experience.

[0147] The following gives a specific example to illustrate in detail the communication method in this embodiment:

[0148] Suppose the satellite orbit height is 600 km, the terminal device UE#1 is located at the sub-satellite point, and the one-way signal propagation delay is 2 ms. The terminal device UE#2 is located at the coverage edge point, and the one-way signal propagation delay is 3 ms. UE#1 and UE#2 belong to the same type of terminal, and both use the second frame structure to communicate with the network side.

[0149] In the Figure 16 shown second frame structure, the network side sends PDSCH to UE#2 and UE#1 in the downlink time-frequency units (1, 0) and (2, 2) respectively, and indicates to UE#2 and UE#1 to send HARQ-ACK information to the network side in the uplink time-frequency units (8, 1) and (7, 1) respectively through indication information such as DCI. UE#2 and UE#1 send HARQ-ACK information to the network side in the uplink time-frequency units (8, 1) and (7, 1) respectively. There is no problem of simultaneous co-frequency transmission and reception self-interference for UE#2 and UE#1, and the spectrum efficiency can reach 100% at most.

[0150] In this example, the downlink time-frequency unit corresponds to the above-mentioned first time-frequency unit, and the uplink time-frequency unit corresponds to the above-mentioned second time-frequency unit. Figure 16 The shown second frame structure includes 10 time units, each time unit includes 2 first time-frequency units and 1 second time-frequency unit, and the second time-frequency unit is configured in the middle of the 2 first time-frequency units.

[0151] This embodiment further provides a communication device, which is applied to a network device. The communication device includes: a third communication module, configured to communicate with a terminal device according to the second frame structure; wherein, the second frame structure includes at least one time unit, the time unit includes at least two time-frequency units, the time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain; each time unit includes the same number of first time-frequency units and second time-frequency units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

[0152] It should be noted that the communication device in this embodiment may specifically be a separate chip, chip module or network device, or may also be a chip or chip module integrated in the network device.

[0153] Regarding each module / unit included in the communication device described in this embodiment, it can be a software module / unit, a hardware module / unit, or it can be partially a software module / unit and partially a hardware module / unit.

[0154] Embodiment 4

[0155] The communication method provided in this embodiment can be executed by a communication device, which can be implemented in a software and / or hardware manner, and the communication device can be part or all of a terminal device. The communication method provided in this embodiment will be introduced below with the terminal device as the execution entity.

[0156] The communication method provided in this embodiment may include the following step S41:

[0157] Step S41: Communicate with a network device according to a second frame structure;

[0158] Wherein, the second frame structure includes at least one time unit, the time unit includes at least two time-frequency units, the time-frequency unit occupies one time unit in the time domain and occupies one frequency unit in the frequency domain; each time unit includes the same number of first time-frequency units and second time-frequency units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

[0159] It should be noted that the network device involved in this embodiment can be the network device in Embodiment 3, and the second frame structure involved in this embodiment is the same as the second frame structure in Embodiment 3. The terminal device involved in this embodiment communicates with the network device in Embodiment 3 using the same frame structure, that is, the second frame structure, which can avoid the terminal device from simultaneously transmitting and receiving on the same frequency, thereby improving the spectrum efficiency and frequency utilization rate and enhancing the user experience.

[0160] This embodiment also provides a communication device applied to a terminal device. The communication device includes: a fourth communication module for communicating with a network device according to a second frame structure; wherein, the second frame structure includes at least one time unit, the time unit includes at least two time-frequency units, the time-frequency unit occupies one time unit in the time domain and occupies one frequency unit in the frequency domain; each time unit includes the same number of first time-frequency units and second time-frequency units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

[0161] It should be noted that the communication device in this embodiment can specifically be a separate chip, chip module or terminal device, or it can be a chip or chip module integrated in the terminal device.

[0162] Regarding each module / unit included in the communication device described in this embodiment, it can be a software module / unit, a hardware module / unit, or it can be partially a software module / unit and partially a hardware module / unit.

[0163] Embodiment 5

[0164] This embodiment provides an electronic device, including a memory, a processor, and a computer program stored in the memory. In the example where the electronic device is a network device, the processor executes the computer program to implement the steps of the method described in Embodiment 1 or 3. In the example where the electronic device is a terminal device, the processor executes the computer program to implement the steps of the method described in Embodiment 2 or 4.

[0165] Embodiment 6

[0166] This embodiment further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the steps of the method in Embodiment 1, 2, 3, or 4.

[0167] Among them, the more specific forms that the readable storage medium can adopt can include but are not limited to: portable disks, hard disks, random access memories, read-only memories, erasable programmable read-only memories, optical storage devices, magnetic storage devices, or any suitable combination of the above.

[0168] In a possible implementation manner, the present disclosure can also be implemented in the form of a computer program product, which includes a computer program. When the computer program is executed by a processor, it implements the steps of the method in Embodiment 1, 2, 3, or 4.

[0169] In a possible implementation manner, the present disclosure can also be implemented in the form of a chip system, which includes a processor for calling and running a computer program from a memory, so that a communication device installed with the chip system executes the method described in Embodiment 1 or 3; or so that a communication device installed with the chip system executes the method described in Embodiment 2 or 4.

[0170] Among them, the computer program for executing the present disclosure can be written in any combination of one or more programming languages. The computer program can be executed entirely on the electronic device, partially on the electronic device, executed as an independent software package, partially on the electronic device and partially on a remote device, or executed entirely on a remote device.

[0171] Although the specific embodiments of the present disclosure have been described above, those skilled in the art should understand that this is only an example, and the protection scope of the present disclosure is defined by the appended claims. Without departing from the principles and essence of the present disclosure, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present disclosure.

Claims

1. A communication method, characterized in that: Applied to a network device, the communication method comprises the following steps: Communicating with the terminal device according to the first frame structure; The first frame structure includes at least one first time unit, at least one second time unit and at least one third time unit in sequence, the first time unit is configured as a downlink resource, the third time unit is configured as an uplink resource, the second time unit includes at least two time-frequency units, each second time unit includes the same number of time-frequency units, and the time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain; Among the time-frequency units included in all the second time units, the first time-frequency units are configured as downlink resources, and the second time-frequency units are configured as uplink resources.

2. The communication method according to claim 1, characterized in that: Among the time-frequency units included in all the second time units, the third time-frequency unit is configured as a time-frequency resource for non-data transmission, and the third time-frequency unit is related to the signal propagation delay within the coverage range of the network device.

3. The communication method according to claim 2, characterized in that: Before the step of communicating with the terminal device according to the first frame structure, the step further includes: Determine the receiving and transmitting state of the terminal device according to the signal propagation delay within the coverage area of ​​the network device, the first time-frequency unit, and the second time-frequency unit; In response to the terminal device transmitting and receiving at the same time and frequency, the corresponding first time-frequency unit and / or second time-frequency unit is updated to a third time-frequency unit.

4. The communication method according to claim 1, wherein: The step of communicating with the terminal device according to the first frame structure specifically includes: Communicate with the terminal device according to the time-frequency units other than the target time-frequency unit in the first frame structure; wherein the target time-frequency unit is related to the signal propagation delay within the coverage range of the network device.

5. The communication method according to claim 4, characterized in that: Before the step of communicating with the terminal device according to the first frame structure, the step further includes: Determine the receiving and transmitting state of the terminal device according to the signal propagation delay within the coverage area of ​​the network device, the first time-frequency unit, and the second time-frequency unit; In response to the terminal device transmitting and receiving at the same time and frequency, the corresponding first time-frequency unit and / or second time-frequency unit is determined as the target time-frequency unit.

6. The communication method according to any one of claims 1 to 5, characterized in that: The time lengths of all second time units are greater than or equal to twice the maximum value of the signal propagation delay within the coverage area of ​​the network device.

7. A communication method, characterized in that: Applied to a terminal device, the communication method comprises the following steps: communicating with the network device according to the first frame structure; The first frame structure includes at least one first time unit, at least one second time unit and at least one third time unit in sequence, the first time unit is configured as a downlink resource, the third time unit is configured as an uplink resource, each second time unit includes the same number of time-frequency units, and the time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain; Among the time-frequency units included in all the second time units, the first time-frequency units are configured as downlink resources, and the second time-frequency units are configured as uplink resources.

8. The communication method according to claim 7, characterized in that: Among the time-frequency units included in all the second time units, the third time-frequency unit is configured as a time-frequency resource for non-data transmission, and the third time-frequency unit is related to the signal propagation delay within the coverage range of the network device.

9. A communication method, characterized in that: Applied to a network device, the communication method comprises the following steps: communicating with the terminal device according to the second frame structure; Among them, the second frame structure includes at least one time unit, the time unit includes at least two time-frequency units, the time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain; each time unit includes the same number of first time-frequency units and second time-frequency units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

10. A communication method, characterized in that: Applied to a terminal device, the communication method comprises the following steps: communicating with the network device according to the second frame structure; Among them, the second frame structure includes at least one time unit, the time unit includes at least two time-frequency units, the time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain; each time unit includes the same number of first time-frequency units and second time-frequency units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

11. A communication device, characterized in that: Applied to a network device, the communication device comprises: A first communication module, used to communicate with the terminal device according to the first frame structure; The first frame structure includes at least one first time unit, at least one second time unit and at least one third time unit in sequence, the first time unit is configured as a downlink resource, the third time unit is configured as an uplink resource, each second time unit includes the same number of time-frequency units, and the time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain; Among the time-frequency units included in all the second time units, the first time-frequency units are configured as downlink resources, and the second time-frequency units are configured as uplink resources.

12. A communication device, characterized in that: Applied to a terminal device, the communication device comprises: A second communication module, used to communicate with the network device according to the first frame structure; The first frame structure includes at least one first time unit, at least one second time unit and at least one third time unit in sequence, the first time unit is configured as a downlink resource, the third time unit is configured as an uplink resource, each second time unit includes the same number of time-frequency units, and the time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain; Among the time-frequency units included in all the second time units, the first time-frequency units are configured as downlink resources, and the second time-frequency units are configured as uplink resources.

13. A communication device, characterized in that: Applied to a network device, the communication device comprises: A third communication module, used to communicate with the terminal device according to the second frame structure; Among them, the second frame structure includes at least one time unit, the time unit includes at least two time-frequency units, the time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain; each time unit includes the same number of first time-frequency units and second time-frequency units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

14. A communication device, characterized in that: Applied to a terminal device, the communication device comprises: a fourth communication module, configured to communicate with the network device according to the second frame structure; Among them, the second frame structure includes at least one time unit, the time unit includes at least two time-frequency units, the time-frequency unit occupies one time unit in the time domain and one frequency unit in the frequency domain; each time unit includes the same number of first time-frequency units and second time-frequency units, the first time-frequency unit is configured as a downlink resource, and the second time-frequency unit is configured as an uplink resource.

15. A network device comprising a memory, a processor and a computer program stored in the memory, characterized in that: The processor executes the computer program to implement the steps of the method according to any one of claims 1 to 6 and 9.

16. A terminal device comprising a memory, a processor and a computer program stored in the memory, characterized in that: The processor executes the computer program to implement the steps of the method according to any one of claims 7 to 8 and 10.

17. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 10 are implemented.

18. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 10 are implemented.

19. A chip system, characterized in that: include: A processor, used to call and run a computer program from a memory so that a communication device equipped with the chip system executes a method as described in any one of claims 1-6 and 9; or a communication device equipped with the chip system executes a method as described in any one of claims 7-8 and 10.

Images