Communication method, communication apparatus, and communication system

Abstract

The present disclosure relates to the technical field of communications, and provides a communication method, a communication apparatus, and a communication system. For an HD-FDD terminal under an NTN network, first information can be determined, and then transmission behavior of the HD-FDD terminal can be determined on the basis of the first information, so that the transmission behavior of the HD-FDD terminal is defined. The transmission behavior can be used for processing overlap of corresponding scheduled resources between uplink transmission and downlink transmission in the time domain, so as to relax configuration or scheduling requirements of a network device. As a result, configuration or scheduling complexity of the network device is reduced, thereby lowering energy consumption on HD-FDD terminal and network device sides, and reducing spectrum resource waste.

Description

Communication method, communication device and communication system Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a communication method, a communication device, and a communication system. Background Art

[0002] Non-terrestrial Network (NTN) is an important technology introduced by 5G. It provides wireless resources through network equipment such as satellites or drones instead of ground base stations.

[0003] Summary of the Invention

[0004] This disclosure proposes a communication method, a communication device, and a communication system. Specifically, for a half-duplex frequency division multiplexing (HD-FDD) terminal in an NTN network, the communication method clarifies the transmission behavior of the HD-FDD terminal, which is used to handle the overlap of scheduling resources corresponding to uplink and downlink transmissions in the time domain.

[0005] An embodiment of the first aspect of the present disclosure provides a communication method executed by an HD-FDD terminal, the method comprising: determining first information; determining a transmission behavior of the HD-FDD terminal based on the first information, the transmission behavior being used to process the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

[0006] A second aspect embodiment of the present disclosure provides a communication method, which is executed by a network device, and the method includes: sending first information; wherein the first information is used to determine the transmission behavior of the HD-FDD terminal, and the transmission behavior is used to process the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

[0007] An embodiment of the third aspect of the present disclosure provides a terminal, comprising: a processing module configured to determine first information; determine a transmission behavior of the HD-FDD terminal based on the first information, and the transmission behavior is used to process the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

[0008] An embodiment of the fourth aspect of the present disclosure provides a network device, comprising: a transceiver module configured to send first information; wherein the first information is used to determine the transmission behavior of the HD-FDD terminal, and the transmission behavior is used to process the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

[0009] A fifth aspect embodiment of the present disclosure provides a communication device, comprising: one or more processors; wherein the processor is used to execute the method described in the first aspect embodiment.

[0010] A sixth aspect embodiment of the present disclosure provides a communication device, comprising: one or more processors; wherein the processor is used to execute the method described in the second aspect embodiment.

[0011] A seventh aspect embodiment of the present disclosure provides a communication system, including: a terminal and a network device; the terminal executes the method as described in the first aspect embodiment, and the network device executes the method as described in the second aspect embodiment.

[0012] An eighth aspect embodiment of the present disclosure provides a communication method, including: a network device sends first information to an HD-FDD terminal; the HD-FDD terminal receives the first information and determines the transmission behavior of the HD-FDD terminal based on the first information, and the transmission behavior is used to process the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

[0013] The ninth aspect embodiment of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the method described in the first aspect embodiment or the second aspect embodiment can be implemented.

[0014] The embodiments of the present disclosure provide a communication method, a communication device, and a communication system. For an HD-FDD terminal in an NTN network, first information can be determined, and then the transmission behavior of the HD-FDD terminal can be determined based on the first information, thereby clarifying the transmission behavior of the HD-FDD terminal. The transmission behavior can be used to handle the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain, so as to relax the configuration or scheduling requirements of the network device, reduce the complexity of the network device configuration or scheduling, reduce the energy consumption of the HD-FDD terminal and the network device side, and reduce the waste of spectrum resources.

[0015] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0017] FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure;

[0018] FIG2 is a flow chart of a communication method according to an embodiment of the present disclosure;

[0019] FIG3 is a flow chart of a communication method according to an embodiment of the present disclosure;

[0020] FIG4 is a flow chart of a communication method according to an embodiment of the present disclosure;

[0021] FIG5 is a block diagram of a communication device according to an embodiment of the present disclosure;

[0022] FIG6 is a block diagram of a communication device according to an embodiment of the present disclosure;

[0023] FIG7 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure;

[0024] FIG8 is a schematic structural diagram of a chip provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0025] The embodiments of the present disclosure are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure and are not to be construed as limiting the present disclosure. It should be noted that the embodiments of the present disclosure and the features in the embodiments may be combined with each other unless there is a conflict.

[0026] To facilitate understanding, the terms involved in the embodiments of the present disclosure are first introduced.

[0027] 1. Non-terrestrial Network (NTN)

[0028] NTN is a key technology introduced by 5G. It provides wireless resources through network equipment such as satellites or drones, rather than ground base stations. Depending on how the satellite processes signals, it can be divided into transparent transmission mode and regeneration mode. In transparent transmission mode, the NTN ground station transmits the signal from the network equipment (gNB) to the satellite. The satellite converts the signal to the satellite frequency band and then transmits it to the terminal (UE) via the satellite frequency band. Besides frequency conversion and signal amplification, the satellite does not demodulate the gNB signal, acting like a repeater. In regeneration mode, the NTN ground station transmits the gNB signal to the satellite. The satellite first demodulates and decodes the signal, then re-encodes and modulates it (a process known as regeneration), and transmits the regenerated signal via the satellite frequency band.

[0029] 2. Half-Duplex Frequency Division Duplexing (HD-FDD)

[0030] HD-FDD is a communication technology that transmits and receives data on different frequencies, allowing only receiving or transmitting at a time. This technology can reduce equipment costs and space requirements, and improve device integration capabilities.

[0031] 3. Timing Advance (TA) pre-compensation

[0032] Due to the long distance between the terminal and the satellite, the control plane (CP) in the physical random access channel (PRACH) cannot cover such a long transmission distance. Therefore, the NTN system has made the following design:

[0033] (1) For uplink frequency synchronization, the terminal relies on its own position obtained by the Global Navigation Satellite System (GNSS) module and the satellite ephemeris information obtained from the base station's broadcast information to calculate the TA and perform TA pre-compensation before sending PRACH to ensure that the PRACH signals sent by terminals at different locations arrive at the base station at the same time (at least within the same PRACH CP range).

[0034] (2) The size of the TA pre-compensated by the terminal is related to the uplink time synchronization reference point set by the base station. When the uplink time synchronization reference point is the base station, the total TA that the base station needs to compensate is the round-trip time of the service link and the round-trip time of the feeder link. When the uplink synchronization reference point is the satellite, the total TA that the terminal needs to compensate is only the round-trip time of the service link.

[0035] 4. TA pre-compensation reporting

[0036] Because the base station needs to know the round-trip delay between the terminal and the base station for uplink scheduling to ensure that the scheduled uplink subframe is at least one round-trip delay away from the current time, the terminal needs to report its TA pre-compensation value to the base station. For example, a new Media Access Control (MAC) control element (CE) can be introduced, such as a new Logical Channel Identification (LCID), and the TA pre-compensation value can be reported based on a TA change trigger mechanism.

[0037] When the terminal triggers MAC CE-based TA reporting but there are no available uplink resources, the network can decide whether to trigger a scheduling request (SR) through configuration.

[0038] The embodiments of the present disclosure provide a communication method, a communication device, and a communication system.

[0039] In a first aspect, an embodiment of the present disclosure proposes a communication method, which is executed by an HD-FDD terminal, and the method includes: determining first information; determining a transmission behavior of the HD-FDD terminal based on the first information, wherein the transmission behavior is used to handle the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

[0040] In the above embodiment, for the HD-FDD terminal under the NTN network, the first information can be determined, and then the transmission behavior of the HD-FDD terminal can be determined based on the first information, thereby clarifying the transmission behavior of the HD-FDD terminal. The transmission behavior can be used to handle the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain, so as to relax the configuration or scheduling requirements of the network equipment, reduce the complexity of network equipment configuration or scheduling, reduce energy consumption on the HD-FDD terminal and network equipment side, and reduce the waste of spectrum resources.

[0041] In conjunction with some embodiments of the first aspect, the first information includes at least one of the following:

[0042] Transmission priority; a first time period corresponding to TA pre-compensation reporting; a second time period for switching between uplink and downlink; and a first cell accessed by the HD-FDD terminal.

[0043] In conjunction with some embodiments of the first aspect, the transmission priority includes at least one of the following:

[0044] Uplink transmission priority; downlink transmission priority; transmission priority of different channels; transmission priority of different signals.

[0045] In conjunction with some embodiments of the first aspect, the transmission priority is determined according to at least one of the following:

[0046] Receiving timing relationship of the first downlink control information (DCI); transmission cancellation condition; number of information retransmissions; redundant version of the transmission block; channel type; signal type; first indication information; protocol predefined rules.

[0047] In combination with some embodiments of the first aspect, the first DCI includes: scheduling DCI and / or activation DCI.

[0048] In combination with some embodiments of the first aspect, the transmission behavior of the HD-FDD terminal is determined according to the transmission priority, including: the priority of uplink transmission is higher than the priority of downlink transmission, and the HD-FDD terminal simultaneously cancels receiving the information sent by the network device; or, the priority of uplink transmission is lower than the priority of downlink transmission, and the HD-FDD terminal cancels sending information to the network device.

[0049] In combination with some embodiments of the first aspect, the priority of the uplink transmission is lower than the priority of the downlink transmission, and the HD-FDD terminal cancels sending information to the network device, including: when the priority of the uplink transmission is lower than the priority of the downlink transmission, the time when the HD-FDD terminal receives the DCI is less than a first threshold from the start time of the uplink transmission, the HD-FDD terminal does not expect to cancel the uplink transmission on the overlapping time domain resources; or, when the priority of the uplink transmission is lower than the priority of the downlink transmission, the time when the HD-FDD terminal receives the DCI is greater than a first threshold from the start time of the uplink transmission, the HD-FDD terminal cancels sending information to the network device; or, when the priority of the uplink transmission is lower than the priority of the downlink transmission, the time when the HD-FDD terminal receives the DCI is less than a first threshold from the start time of the uplink transmission, the HD-FDD terminal does not expect to cancel the uplink transmission on the overlapping time domain resources within the first time range, and the HD-FDD terminal cancels the uplink transmission on the remaining overlapping time domain resources except the first time range.

[0050] With reference to some embodiments of the first aspect, the HD-FDD terminal performs unidirectional transmission or does not perform transmission during the first time period.

[0051] In combination with some embodiments of the first aspect, the method further includes: determining the first time period according to the time when the HD-FDD terminal triggers TA pre-compensation reporting, or the time when the HD-FDD terminal performs the latest TA pre-compensation adjustment.

[0052] In conjunction with some embodiments of the first aspect, the length of the first time period is determined according to at least one of the following:

[0053] One-way propagation delay of the uplink; one-way propagation delay of the feeder link between the network equipment and the satellite; average scheduling waiting delay.

[0054] In combination with some embodiments of the first aspect, the HD-FDD terminal does not transmit in the second time period.

[0055] In combination with some embodiments of the first aspect, the method further includes: determining the second time period based on a TA pre-compensation value, or determining the second time period based on a TA pre-compensation difference between the network device and the HD-FDD terminal.

[0056] In conjunction with some embodiments of the first aspect, determining the second time period according to at least one of the following includes:

[0057] Based on the terminal-specific timing advance (UE-specific TA); satellite altitude; timing advance offset threshold (offsetThresholdTA) configured by network equipment; and cell-common timing advance (cell-commonTA).

[0058] In combination with some embodiments of the first aspect, the transmission behavior of the HD-FDD terminal is determined based on the first cell, including: the first cell is a cell of a terrestrial network (TN), and the HD-FDD terminal performs the first behavior; or, the first cell is a cell of a non-terrestrial network (NTN), and the HD-FDD terminal does not perform the first behavior.

[0059] In combination with some embodiments of the first aspect, determining the first information includes: receiving the first information sent by a network device.

[0060] In the second aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a network device, and the method includes: sending first information; wherein, the first information is used to determine the transmission behavior of the HD-FDD terminal, and the transmission behavior is used to handle the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

[0061] In conjunction with some embodiments of the second aspect, the first information includes: the first information includes at least one of the following:

[0062] Transmission priority; a first time period corresponding to TA pre-compensation reporting; a second time period for switching between uplink and downlink; and a first cell accessed by the HD-FDD terminal.

[0063] In conjunction with some embodiments of the second aspect, the transmission priority includes at least one of the following:

[0064] Uplink transmission priority; downlink transmission priority; transmission priority of different channels; transmission priority of different signals.

[0065] In conjunction with some embodiments of the second aspect, the transmission priority is determined based on at least one of the following:

[0066] The receiving timing relationship of the first DCI; transmission cancellation conditions; number of information retransmissions; redundant version of the transmission block; channel type; signal type; first indication information; protocol predefined rules.

[0067] In combination with some embodiments of the second aspect, the first DCI includes: scheduling DCI and / or activation DCI.

[0068] In combination with some embodiments of the second aspect, the transmission priority is used to determine whether the HD-FDD terminal performs unidirectional transmission.

[0069] In combination with some embodiments of the second aspect, the HD-FDD terminal performs unidirectional transmission or does not perform transmission during the first time period.

[0070] In conjunction with some embodiments of the second aspect, the first time period is determined based on at least one of the following:

[0071] The time when the HD-FDD terminal triggers TA pre-compensation reporting; the time when the HD-FDD terminal performs the latest TA pre-compensation adjustment.

[0072] In conjunction with some embodiments of the second aspect, the length of the first time period is determined according to at least one of the following:

[0073] One-way propagation delay of the uplink; one-way propagation delay of the feeder link between the network equipment and the satellite; average scheduling waiting delay.

[0074] In combination with some embodiments of the second aspect, the HD-FDD terminal does not transmit in the second time period.

[0075] In conjunction with some embodiments of the second aspect, the second time period is determined based on one of the following:

[0076] TA pre-compensation value; TA pre-compensation difference between the network device and the HD-FDD terminal.

[0077] With reference to some embodiments of the second aspect, the first cell is a TN cell or an NTN cell.

[0078] In a third aspect, an embodiment of the present disclosure proposes an HD-FDD terminal, comprising: a processing module configured to obtain first information; and determining a transmission behavior of the HD-FDD terminal based on the first information, wherein the transmission behavior is used to process the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

[0079] In a fourth aspect, an embodiment of the present disclosure proposes a network device, comprising: a transceiver module configured to send first information; wherein the first information is used to determine the transmission behavior of the HD-FDD terminal, and the transmission behavior is used to process the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

[0080] In the fifth aspect, an embodiment of the present disclosure proposes a communication device, which may be a terminal or a network device, comprising: one or more processors; wherein the processor of the terminal is used to execute the method described in the embodiment of the first aspect, and the processor of the network device is used to execute the method described in the embodiment of the second aspect.

[0081] In a sixth aspect, an embodiment of the present disclosure proposes a communication system, comprising: a terminal and a network device; the terminal executes the method described in the embodiment of the first aspect, and the network device executes the method described in the embodiment of the second aspect.

[0082] In the seventh aspect, an embodiment of the present disclosure provides a communication method, including: a network device sends first information to an HD-FDD terminal; the HD-FDD terminal receives the first information and determines the transmission behavior of the HD-FDD terminal based on the first information, and the transmission behavior is used to process the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

[0083] In an eighth aspect, an embodiment of the present disclosure proposes a computer storage medium, wherein the computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the method described in the embodiment of the first aspect or the embodiment of the second aspect can be implemented.

[0084] In a ninth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the embodiment of the first aspect or the embodiment of the second aspect.

[0085] In a tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the embodiment of the first aspect or the embodiment of the second aspect.

[0086] In an eleventh aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method according to the embodiment of the first aspect or the embodiment of the second aspect.

[0087] It is understandable that the above-mentioned terminals, network devices, communication systems, and storage media are all used to execute the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods and will not be repeated here.

[0088] The present disclosure provides a communication method, terminal, network device, and communication system. In some embodiments, the terms "communication method" and "information processing method," "information sending method," and "information receiving method" are interchangeable; the terms "communication device" and "information processing device," "information sending device," and "information receiving device" are interchangeable; and the terms "information processing system," "communication system," "information sending system," and "information receiving system" are interchangeable.

[0089] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0090] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0091] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0092] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0093] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0094] In some embodiments, the terms "at least one of", "at least one of", "at least one of", "one or more", "a plurality of", "multiple", etc. can be used interchangeably.

[0095] In the embodiments of the present disclosure, descriptions such as “at least one of A, B, C…”, “A and / or B and / or C…”, etc. include the situation where any one of A, B, C… exists alone, and also include any combination of any multiple of A, B, C…, and each situation can exist alone; for example, “at least one of A, B, C” includes the situation where A exists alone, B exists alone, C exists alone, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C; for example, A and / or B includes the situation where A exists alone, B exists alone, and the combination of A and B.

[0096] In some embodiments, descriptions such as "in one case A, in another case B," or "in response to one case A, in response to another case B," may include the following technical solutions depending on the situation: executing A independently of B (in some embodiments, A); executing B independently of A (in some embodiments, B); selectively executing A and B (in some embodiments, selecting between A and B); and executing both A and B (in some embodiments, A and B). The same applies when there are more branches, such as A, B, and C.

[0097] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0098] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0099] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0100] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0101] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0102] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0103] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0104] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0105] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, it can also be called device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, language such as "uplink" and "downlink" can also be replaced by language corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0106] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0107] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0108] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0109] In some embodiments, the threshold mentioned in this embodiment may be a numerical value, a constant, or some fixed value.

[0110] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0111] The correspondences shown in the tables of the present disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values, which are not limited by the present disclosure. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, in the tables of the present disclosure, the correspondences shown in certain rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also adopt other names that can be understood by the communication device, and the values ​​or representations of the parameters may also adopt other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures may also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables, etc.

[0112] The predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0113] The communication method, terminal, network device and communication system provided by the present disclosure are described in detail below with reference to the accompanying drawings.

[0114] FIG1 shows a structural diagram of a communication system according to an embodiment of the present disclosure. As shown in FIG1 , the system architecture may include a network device 11 and a terminal 12 .

[0115] In some examples, the network device 11 may be an entity on the network side for transmitting or receiving signals. For example, the network device 11 may be a communication satellite, an evolved NodeB (eNB), a transmission reception point (TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the network device 11. The network device 11 provided in the embodiments of the present disclosure may be composed of a central unit (CU) and a distributed unit (DU), wherein the CU may also be referred to as a control unit. The CU-DU structure may be used to split the protocol layer of a network device, such as a base station, and the functions of some protocol layers are placed in the CU for centralized control, while the functions of the remaining part or all of the protocol layers are distributed in the DU, and the DU is centrally controlled by the CU.

[0116] In some examples, the terminal 12 may be referred to as an HD-FDD terminal, a terminal device (terminal), a user equipment, a mobile station (MS), a mobile terminal device (MT), etc. The terminal 12 may also be a car with communication capabilities, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver capabilities, a virtual reality device, an augmented reality device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, etc. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal 12.

[0117] It can be understood that the communication processing system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0118] The following embodiments of the present disclosure may be applied to the communication processing system shown in Figure 1, or a portion thereof, but are not limited thereto. The entities shown in Figure 1 are illustrative only. The communication processing system may include all or part of the entities shown in Figure 1, or may include other entities outside of Figure 1. The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, whether direct or indirect, and wired or wireless.

[0119] The embodiments of the present disclosure can be applied to satellite communications, Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G NR, Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0120] In some examples, network device 11 sends first information to terminal 12, terminal 12 receives the first information sent by network device 11, and determines the transmission behavior of the HD-FDD terminal based on the first information. The transmission behavior can be used to handle the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

[0121] This embodiment is aimed at HD-FDD terminals under the NTN network. The first information can be obtained, and the transmission behavior of the HD-FDD terminal can be determined based on the first information, thereby clarifying the transmission behavior of the HD-FDD terminal. The transmission behavior can be used to handle the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain, so as to relax the configuration or scheduling requirements of the network equipment, reduce the complexity of network equipment configuration or scheduling, reduce energy consumption on the HD-FDD terminal and network equipment side, and reduce the waste of spectrum resources.

[0122] Furthermore, to illustrate the specific execution process of the above-mentioned communication processing system, FIG2 shows a schematic diagram of a communication method according to an embodiment of the present disclosure. The method is applied to the above-mentioned communication system, as shown in FIG2, and may include the following steps:

[0123] Step S201: The network device sends first information to the HD-FDD terminal.

[0124] In some embodiments, the HD-FDD terminal receives first information sent by the network device.

[0125] In some embodiments, the first information may be communication information, such as indication information or signaling, for example, the first information may be carried and sent through radio resource control (RRC) signaling and / or media access control layer (MAC) control element (CE) and / or downlink control information (DCI) and / or system information block (SIB).

[0126] Step S202: The HD-FDD terminal determines its transmission behavior according to the first information.

[0127] In some embodiments, the HD-FDD terminal can determine the first information and determine the transmission behavior of the HD-FDD terminal based on the first information. A variety of optional methods can be used to determine the first information. In some embodiments, the HD-FDD terminal can obtain the first information from the network device, that is, the HD-FDD terminal can use the information received from the network device as the first information, or the HD-FDD terminal can also determine the first information according to the predefined rules of the protocol, or the HD-FDD terminal can also calculate the first information by itself, such as calculating the first information based on satellite ephemeris information, its own position information, etc. In some examples, when the HD-FDD terminal determines the first information according to the predefined rules of the protocol or calculates the first information by itself, the HD-FDD terminal can send the first information to the network device so that the network device can make corresponding scheduling adjustments based on the first information determined by the terminal.

[0128] In some embodiments, the transmission behavior is used to handle overlapping scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

[0129] In some embodiments, uplink and downlink transmission may refer to transmission between an HD-FDD terminal and a network device, or may refer to transmission between an HD-FDD terminal and other terminals, etc.

[0130] For NTN networks, when the network side performs dynamic grant (DG) uplink scheduling and DG downlink scheduling, in some cases, the TA on the network side and the HD-FDD terminal side may be misaligned. This is because the open-loop TA performed spontaneously on the terminal side, that is, the TA pre-compensation value calculated by the HD-FDD terminal based on the ephemeris information broadcast by the network device and its own GNSS, cannot be notified to the network device in a timely manner. For example, the uplink MAC CE TA command is not sent in time due to propagation delay or scheduling waiting delay, or the reporting of the open-loop TA pre-compensation value is disabled (for example, when TAR-Config is not configured), or the TA adjustment cannot be triggered because a certain threshold is not reached between two TA adjustments.

[0131] Since the TAs of the network equipment and the HD-FDD terminal side are not aligned, the network equipment cannot accurately know the TA time between the uplink and downlink transmissions on the HD-FDD terminal side. Therefore, it cannot guarantee that there will be no overlapping between the uplink and downlink transmissions during each scheduling or when performing higher-layer configuration. In other words, it is easy for the scheduling resources corresponding to the uplink and downlink transmissions in the time domain to overlap.

[0132] Furthermore, when the network performs semi-static uplink and downlink configuration, it can only do so based on the timing relationship between the uplink and downlink on the terminal side at the time of configuration. Even if the network is notified promptly of TA pre-compensation adjustments made by the HD-FDD terminal side, it may be difficult for the network side to perform real-time RRC parameter updates each time, placing excessive demands on the network side. Therefore, it is necessary to consider relaxing these requirements on the network side.

[0133] To this end, this embodiment clarifies the transmission behavior of HD-FDD terminals in the NTN network. This transmission behavior can be used to handle the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain, so as to relax the configuration or scheduling requirements of network equipment, reduce the complexity of network equipment configuration or scheduling, reduce the energy consumption of HD-FDD terminals and network equipment sides, and reduce the waste of spectrum resources.

[0134] In some embodiments, the method of this embodiment may be applicable to at least one of the following scenarios where scheduling resources overlap:

[0135] A1. The scheduling resources corresponding to the dynamic grant (DG) uplink channel / signal and the DG downlink channel / signal in the time domain overlap.

[0136] The uplink channels / signals may include: a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), a sounding reference signal (SRS), and the like.

[0137] Downlink channels / signals may include: DG physical downlink shared channel (PDSCH), DG channel state information reference signal (Channel State Information-Reference Signal, CSI-RS), etc.

[0138] B1. Scheduling resources corresponding to a semi-static uplink channel / signal and a semi-static downlink channel / signal in the time domain overlap.

[0139] As an example, the scheduling resources corresponding to dedicated higher layer parameters configuring transmission and dedicated higher layer parameters configuring reception in the time domain overlap.

[0140] The downlink channels / signals may include: user search space (USS), physical downlink control channel (PDCCH), PDSCH, CSI-RS, etc. The uplink channels / signals may include: PUSCH, PUCCH, SRS, etc.

[0141] As an example, the scheduling resources corresponding to the uplink transmission configured by the dedicated higher layer parameters and the cell-specific higher layer parameters configuring reception in the time domain overlap.

[0142] Among them, downlink channels / signals may include: Type-0 Common Search Spaceset (CSS) PDCCH, Type-0A CSS PDCCH, Type-1 CSS PDCCH, Type-2 CSS PDCCH, etc. Uplink channels / signals may include: PUSCH, PUCCH, SRS, etc.

[0143] In some embodiments, the first information may include at least one of the following:

[0144] A2, transmission priority, such as the transmission priority of the physical layer channel / signal between the HD-FDD terminal and the network equipment; B2, the first time period corresponding to the TA pre-compensation report, such as the time gap; C2, the second time period for switching between the uplink and downlink, such as the switching time; D2, the first cell accessed by the HD-FDD terminal, that is, the serving cell accessed by the HD-FDD terminal.

[0145] In some embodiments, the transmission priority may be a specific numerical value, such as high priority, medium priority, low priority, etc.; or it may be a relative relationship, such as the uplink has a higher priority than the downlink.

[0146] In some embodiments, the transmission priority may include at least one of the following:

[0147] A3, uplink transmission priority; B3, downlink transmission priority; C3, transmission priority of different channels; D3, transmission priority of different signals.

[0148] For example, this embodiment determines the transmission priority. If the scheduling resources corresponding to the uplink transmission and the downlink transmission in the time domain overlap, the HD-FDD terminal only processes the channels / signals with higher priorities according to the transmission priority, such as only sending the uplink and canceling the downlink reception, or only receiving the downlink and canceling the uplink transmission, etc.

[0149] In some embodiments, the transmission priority is determined based on at least one of the following:

[0150] A4, first indication information, such as the first indication information sent by the network device; B4, protocol predefined rules; C4, reception timing relationship of the first DCI; D4, transmission cancellation condition; E4, number of information retransmissions; F4, redundant version of the transmission block; G4, channel type; H4, signal type.

[0151] In some embodiments, the HD-FDD terminal may determine the transmission priority based on the first indication information (such as configuration or indication information) sent by the network device. For example, the HD-FDD terminal may determine the transmission priority based on the configuration or indication of the network device. For example, the priority of physical channel / signal transmission is determined by the configuration or indication of the network device, for example, the transmission priority of PUSCH is indicated as the first priority through the uplink DCI, and the transmission priority of PDSCH is indicated as the second priority through the downlink DCI, wherein the first priority is higher than the second priority. Therefore, if overlapping occurs between the PUSCH and the PDSCH, the transmission of PUSCH is given priority.

[0152] In some possible embodiments, the network configures or indicates that different Hybrid Automatic Repeat Request Process Numbers (HPNs) may have different priorities for data channels. The priority of the data channel is then determined based on the priority corresponding to the HPN. For example, the first PUSCH transmission of HPN#m is prioritized as first, the second PUSCH transmission of HPN#n is prioritized as fourth, the first PDSCH transmission of HPN#p is prioritized as second, and the second PDSCH transmission of HPN#k is prioritized as third. The order of priority is: first > second > third > fourth. If the time domain resources of the first PUSCH and the first PDSCH overlap, the HD-FDD terminal, based on this priority relationship, transmits the first PUSCH and cancels reception of the first PDSCH. If the time domain resources of the second PUSCH and the second PDSCH overlap, the HD-FDD terminal, based on this priority relationship, receives the second PDSCH and cancels transmission of the second PUSCH.

[0153] In some examples, for the configuration signaling or indication signaling of the network device, a new field can be introduced in the scheduling DCI or activation DCI, and the transmission priority can be determined based on the introduced new field; or the existing field in the scheduling DCI or activation DCI can be reused, and the transmission priority can be determined based on the reused existing field; or the network device can be configured or indicated through radio resource control (RRC) or system information block (SIB) signaling, etc.

[0154] In some examples, if based on DCI indication, the same DCI can simultaneously indicate the transmission of two different channels / signals in the same direction. In this case, the two channels / signals in the same direction can share the same priority indication, etc.

[0155] In addition to determining transmission priority based on network instructions, in some embodiments, an HD-FDD terminal may also determine transmission priority based on protocol predefined rules. For example, the protocol predefines that downlink transmissions have a higher priority. Alternatively, the protocol predefines that uplink transmissions have a higher priority.

[0156] In some embodiments, an HD-FDD terminal may determine transmission priority based on the timing relationship of receiving the first DCI. For example, in some examples, the first DCI may include: scheduling DCI and / or activation DCI; and the transmission priority may be determined based on the timing relationship of receiving the scheduling DCI and / or activation DCI. For example, a channel scheduled by a DCI with a later time domain position has a higher transmission priority, while a channel scheduled by a DCI with an earlier time domain position has a lower transmission priority.

[0157] In some embodiments, it may be determined that a transmission priority in a certain direction is higher, such as uplink transmission having a higher priority, or downlink transmission having a higher priority, etc.

[0158] In some embodiments, the transmission priority may be determined based on the transmission cancellation condition. For example, the more complex the transmission cancellation condition, the higher the corresponding transmission priority. For example, if the uplink transmission cancellation condition is more complex, the uplink may enjoy a higher transmission priority, or if the transmission cancellation condition of channel A is more complex, channel A may enjoy a higher transmission priority, or if the transmission cancellation condition of signal B is more complex, signal B may enjoy a higher transmission priority.

[0159] In some embodiments, the transmission priority may be determined based on the number of information retransmissions. For example, if at least one channel uses a repetition transmission mechanism, a channel with a higher number of retransmissions may have a lower transmission priority, while a channel with a lower number of retransmissions may have a higher transmission priority.

[0160] In some embodiments, the transmission priority can be determined based on the redundancy version of the transport block (TB). For example, for a data channel, the transmission priority can be determined based on the redundancy version of the TB transmitted in the uplink and downlink channels, such as the redundancy version priority order: RV#0 > RV#2 > RV#3 > RV#1.

[0161] In some embodiments, the transmission priority can be determined based on the channel type and / or signal type. For example, if the scheduling resources corresponding to the DG downlink and the DG uplink overlap in the time domain, the transmission priority can be determined based on the channel type and / or signal type. For example, the transmission priority of the DG PUCCH is higher than the transmission priority of all DG downlink channels and / or signals; the transmission priority of the DG PUSCH is higher than the transmission priority of the DG Channel State Information-Reference Signal (CSI-RS); the transmission priority of the DG PDSCH is higher than the transmission priority of the DG Sounding Reference Signal (SRS), etc.

[0162] For another example, for the overlapping scheduling resources corresponding to the semi-static dedicated downlink and the semi-static dedicated uplink in the time domain, it can be determined according to the channel type and / or signal type that the transmission priority of the USS PDCCH is higher than the transmission priority of all uplink channels and / or signals; the transmission priority of the PUCCH is higher than the transmission priority of other downlink channels and / or signals except the USS PDCCH; the transmission priority of the PUSCH is higher than the transmission priority of the CSI-RS; the transmission priority of the PDSCH is higher than the transmission priority of the SRS, etc.

[0163] For another example, when the scheduling resources corresponding to the semi-static dedicated uplink and the semi-static cell-specific downlink overlap in the time domain, the following different methods may be used:

[0164] Mode 1: The transmission priority of Type-0 CSS PDCCH, Type-0A CSS PDCCH, Type-1 CSS PDCCH, and Type-2 CSS PDCCH is higher than the transmission priority of the uplink channel / uplink signal.

[0165] Method 2: For a specific terminal, the transmission priority of the Type-0 CSS, Type-0A CSS, Type-1 CSS, or Type-2 CSS that actually needs to monitor the PDCCH is higher than the transmission priority of the uplink channel / uplink signal. For the Type-0 CSS, Type-0A CSS, Type-1 CSS, or Type-2 CSS that has been configured but the terminal does not actually need to monitor the PDCCH of that type on that resource, its transmission priority is lower than the transmission priority of the uplink channel / uplink signal. For example, if the terminal does not actually need to update system information (SI), such as if it is not in a modification period and does not need to monitor paging in the paging search space (Type-2 CSS), or if it does not initiate a RACH and does not need to monitor the random access search space (RA-search space, i.e., Type-1 CSS), etc.

[0166] Furthermore, the aforementioned methods for determining transmission priority can be used in combination. For example, an HD-FDD terminal first determines whether the network device has configuration / indication information for channel priority. If such configuration / indication information is not available, transmission priority is determined based on at least one of the other methods (e.g., C4 through H4). Furthermore, the specific methods to be used can be specified by the protocol and their priority levels, or the protocol can specify at least several of the methods, and the specific methods to be used and their priority levels can be further configured / indicated by the network device.

[0167] In some embodiments, the transmission priority can be used to determine whether the HD-FDD terminal performs unidirectional transmission when the uplink transmission and downlink transmission have overlapping time domain scheduling resources. In some examples, the transmission behavior of the HD-FDD terminal is determined based on the transmission priority, which may specifically include: when the priority of the uplink transmission is higher than the priority of the downlink transmission, the HD-FDD terminal cancels receiving the information sent by the network device. For example, the HD-FDD terminal sends information to the network device and cancels receiving the information sent by the network device; or, when the priority of the uplink transmission is lower than the priority of the downlink transmission, the HD-FDD terminal cancels sending information to the network device, such as the HD-FDD terminal receives the information sent by the network device and cancels sending information to the network device.

[0168] In some embodiments, transmission cancellation may be performed only on overlapping time domain resources of the downlink and uplink, such as canceling the reception of information sent by the network device or canceling the sending of information to the network device, while transmission on other non-overlapping time domain resources of the downlink and uplink continues.

[0169] To ensure that some transmissions can be accurately canceled, in some examples, when the priority of uplink transmission is lower than the priority of downlink transmission, the HD-FDD terminal cancels sending information to the network device, which may specifically include (one of A5 to D5):

[0170] A5. When the priority of uplink transmission is lower than the priority of downlink transmission, and the time from the HD-FDD terminal receiving the DCI to the start time of the uplink transmission is less than a first threshold, the HD-FDD terminal does not expect to cancel the uplink transmission on the overlapping time domain resources. The first threshold is determined based on the PUSCH preparation time, and the PUSCH preparation time is determined based on the processing capability 1 of the HD-FDD terminal. For example, if the priority of uplink transmission is lower than the priority of downlink transmission, and the time from the HD-FDD terminal receiving the DCI is less than the threshold from the start time of the uplink transmission, it means that there is not enough time to cancel the uplink transmission, and the HD-FDD terminal does not expect to cancel the uplink transmission on the overlapping time domain resources.

[0171] B5. When the priority of uplink transmission is lower than the priority of downlink transmission, and the time between the HD-FDD terminal receiving the DCI and the start time of the uplink transmission is greater than a first threshold, the HD-FDD terminal cancels sending information to the network device. For example, if the priority of uplink transmission is lower than the priority of downlink transmission, and the time between the HD-FDD terminal receiving the DCI and the start time of the uplink transmission is greater than the threshold, it means that there is sufficient time to cancel the uplink transmission. The HD-FDD terminal receives the information sent by the network device and simultaneously cancels sending information to the network device.

[0172] C5. When the priority of uplink transmission is lower than the priority of downlink transmission, and the distance between the time when the HD-FDD terminal receives the DCI and the start time of the uplink transmission is less than a first threshold, the HD-FDD terminal does not expect to cancel the uplink transmission on the overlapping time domain resources within the first time range, and the HD-FDD terminal cancels the uplink transmission on the remaining overlapping time domain resources outside the first time range. In some examples, the first time range is: a time range of X symbols counting backward from the start of the DCI, where the X symbols overlap with the uplink transmission, and is determined as the first time range, where X is a positive integer.

[0173] For example, for the overlapping between the sounding reference signal (SRS) and the downlink transmission, it is assumed that the overlapping time domain resources of the PUSCH corresponding to the PDSCH and the SRS are symbols 0 to 5; the transmission priority of the PUSCH corresponding to the SRS is lower than the transmission priority of the PDSCH, the time interval between the time when the HD-FDD terminal receives the DCI and the start time of the SRS is less than the first threshold Trpocessing,1, and the DCI end position ~ DCI end position + Trpocessing,1 includes symbols 0 to 3, then for uplink transmission, the transmission from symbol 0 to symbol 3 is not canceled, the transmission from symbol 3 to symbol 5 is canceled, and the transmission from symbol 5 to symbol X is not canceled.

[0174] D5. When the priority of uplink transmission is lower than the priority of downlink transmission, and the time from when the HD-FDD terminal receives DCI to the start time of uplink transmission is less than a first threshold, the HD-FDD terminal does not expect to cancel the uplink transmission on the overlapping time domain resources within the first time range, and the HD-FDD terminal does not expect to cancel the uplink transmission on the remaining allocated resources outside the first time range.

[0175] For example, for the overlapping between uplink transmission and downlink transmission other than SRS, it is assumed that the overlapping time domain resources of PDSCH and PUSCH are symbols 0 to 5; the transmission priority of PUSCH is lower than the transmission priority of PDSCH, the time interval between the time when the HD-FDD terminal receives the DCI and the start time of PUSCH is less than the first threshold Trpocessing,1, and the DCI end position ~ DCI end position + Trpocessing,1 includes symbols 0 to 3, then for uplink transmission, the transmission of symbol 0 to symbol 3 is not canceled, and the transmission of symbol 3 to symbol X is canceled.

[0176] In some embodiments, considering that the network device cannot accurately know the timing relationship between the uplink and downlink on the HD-FDD terminal side, it is known whether overlapping time domain resources occur between the uplink and downlink of the HD-FDD terminal. It may still be possible to send PDSCH and receive PUSCH at the same time, depending on the implementation of the network device.

[0177] As shown above, the transmission behavior of an HD-FDD terminal is determined based on transmission priority, which is used to address the overlap of scheduled resources corresponding to uplink and downlink transmissions in the time domain. In some embodiments, the transmission behavior of the HD-FDD terminal can also be determined based on the first time period corresponding to the TA pre-compensation report, which is used to address the overlap of scheduled resources corresponding to uplink and downlink transmissions in the time domain. In some examples, the HD-FDD terminal performs unidirectional transmission or does not transmit during this first time period.

[0178] For example, the first time period is determined to be a time gap, during which the HD-FDD terminal only expects to perform signal / channel transmission in one direction; or during which the HD-FDD terminal does not expect to perform any signal / channel transmission or reception.

[0179] In some embodiments, the first time period may be determined according to the time when the HD-FDD terminal triggers TA pre-compensation reporting, or the time when the HD-FDD terminal performs the latest TA pre-compensation adjustment.

[0180] For example, the first time period is determined based on the period from when the HD-FDD terminal triggers TA pre-compensation reporting to when the network device receives the reported TA pre-compensation value.

[0181] For another example, if the last TA pre-compensation value reported by the HD-FDD terminal is V0, and the HD-FDD terminal most recently adjusted TA pre-compensation according to V1, and the difference (V1-V0) exceeds a certain threshold delta_T1 but is less than delta_T2, where delta_T2 is the timing advance offset threshold (offsetThresholdTA), then the first time period may be determined based on the time interval A between the most recent TA pre-compensation adjustment and the HD-FDD terminal's next TA pre-compensation report. Alternatively, the first time period may be determined based on the time interval B between the HD-FDD terminal's most recent TA pre-compensation and the HD-FDD terminal's next TA pre-compensation adjustment (V2), where the TA pre-compensation difference (V2-V0) does not exceed delta_T1. In some examples, the threshold delta_T1 may be 0.

[0182] In some possible embodiments, the maximum TA pre-compensation value may be determined based on at least one of the following information, and the maximum TA pre-compensation value may be directly used as the first time period corresponding to the TA pre-compensation report and / or the second time period for switching between the uplink and the downlink.

[0183] Satellite ephemeris information; terminal location.

[0184] In some possible embodiments, the value of offsetThresholdTA may be directly used as the first time period corresponding to TA pre-compensation reporting and / or the second time period for switching between uplink and downlink.

[0185] In some embodiments, the length of the first time period is determined based on at least one of the following:

[0186] A6. Uplink one-way propagation delay. For example, the uplink MAC CE one-way propagation delay can be the maximum propagation delay predefined in the protocol, such as that determined based on different scenarios such as Low Earth Orbit (LEO), Geosynchronous Earth Orbit (GEO), and Medium Earth Orbit (MEO). It can also be the one-way propagation delay of the service link determined by the HD-FDD terminal based on its own position and satellite ephemeris information, or the one-way propagation delay configured by the network device.

[0187] B6. One-way propagation delay of the feeder link between the network equipment and the satellite; for example, the one-way propagation delay of the feeder link between the base station and the satellite.

[0188] C6. Average scheduling delay, such as the average scheduling delay predefined by the protocol or the average scheduling delay configured by the network device.

[0189] In some embodiments, the transmission behavior of the HD-FDD terminal may also be determined based on a second time period for switching between uplink and downlink (downlink-uplink switching time) to address overlap in scheduling resources corresponding to uplink and downlink transmissions in the time domain. In some examples, the HD-FDD terminal does not transmit during this second time period. For example, during the switching time, the HD-FDD terminal does not transmit or receive any channels or signals.

[0190] In some embodiments, the second time period, ie, the switching time, may be determined based on a TA pre-compensation value, or a TA pre-compensation difference between the network device and the HD-FDD terminal.

[0191] In some examples, determining the second time period may specifically include: determining the second time period based on a terminal-specific time advance (UE-specific TA, i.e., a TA value from the terminal to the satellite pre-compensated on the terminal side), and / or a satellite height, and / or a time advance offset threshold (offsetThresholdTA) configured by a network device, and / or a cell-common TA (i.e., a TA value from the network to the base station).

[0192] For example, the switching time is determined based on the TA pre-compensation value or the pre-compensation difference. For a scenario where the synchronization reference point is a satellite, the TA is a UE-specific TA. The HD-FDD terminal determines the switching time based on at least one of the following factors:

[0193] A7. The switching time includes the UE-specific TA / N determined by the HD-FDD terminal, such as N=2.

[0194] B7. The switching time is determined based on different satellite altitudes, such as GEO, LEO, and MEO. At the same time, the switching time includes the maximum value of the UE-specific TA in the specific satellite scenario of the cell / N, such as N = 2.

[0195] C7. The switching time includes the offsetThresholdTA / N configured by the network device, such as N=2.

[0196] For another example, the switching time is determined based on the TA pre-compensation value or the pre-compensation difference. For a scenario where the synchronization reference point is a network device, the TA includes a UE-specific TA and a cell-common TA (such as a link between the network device and the satellite). The HD-FDD terminal determines the switching time based on at least one of the following factors:

[0197] A8. The switching time includes the UE-specific TA / N determined by the HD-FDD terminal, such as N=2.

[0198] B8. The switching time is determined based on different satellite altitudes, such as GEO, LEO, and MEO. At the same time, the switching time includes the maximum value of the UE-specific TA in the specific satellite scenario of the cell / N, such as N = 2.

[0199] C8. Switching time includes offsetThresholdTA / N configured by the network device, such as N=2.

[0200] D8. Switching time includes cell-common TA / N, such as N=2.

[0201] In some embodiments, the transmission behavior of the HD-FDD terminal may also be determined based on the first cell accessed by the HD-FDD terminal to process the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

[0202] In some examples, determining the transmission behavior of the HD-FDD terminal based on the first cell accessed by the HD-FDD terminal may specifically include:

[0203] When the first cell accessed by the HD-FDD terminal is a cell of a terrestrial network (TN), the HD-FDD terminal performs the first behavior; or, when the first cell accessed by the HD-FDD terminal is a cell of a non-terrestrial network (NTN), the HD-FDD terminal does not perform the first behavior.

[0204] For example, no restrictions are placed on the scheduling of NTN network devices. The following behavior is applicable only to HD-FDD terminals in TN networks and not to HD-FDD terminals in NTN networks. In this approach, network device scheduling can be relied upon to minimize the occurrence of overlapping time domain resources for uplink and downlink. However, if overlapping time domain resources for uplink and downlink occur, the behavior of the HD-FDD terminal depends on the terminal implementation. Alternatively, overlapping time domain scheduling resources for downlink and uplink are no longer treated as an anomaly, thereby relaxing the scheduling and restrictions on network devices.

[0205] For example, the first behavior may be that the HD-FDD terminal does not expect to detect DCI that schedules downlink reception and uplink transmission on overlapping symbol resources, but the HD-FDD terminal working in the NTN network does not perform the first behavior, that is, except for the HD-FDD terminal equipment working in the NTN network.

[0206] For another example, the first behavior may include: if the scheduling resources corresponding to the semi-persistent uplink and the semi-persistent downlink overlap in the time domain, the HD-FDD terminal does not expect to configure dedicated higher-layer parameters for downlink reception and uplink transmission in the overlapping symbol resources. However, HD-FDD terminals operating in an NTN network do not perform this first behavior, i.e., HD-FDD terminal devices operating in an NTN network do not perform this first behavior. Furthermore, the first behavior may also include: if the scheduling resources corresponding to the semi-persistent uplink and the semi-persistent downlink overlap in the time domain, the HD-FDD terminal does not expect to configure the Type-0 / 0A / 1 / 2-PDCCH CSS set for PDCCH reception and dedicated higher-layer parameters for uplink transmission in the overlapping symbol resources. However, HD-FDD terminals operating in an NTN network do not perform this first behavior, i.e., HD-FDD terminal devices operating in an NTN network do not perform this first behavior.

[0207] It should be noted that in different scenarios, when the scheduling resources corresponding to uplink transmission and downlink transmission overlap in the time domain, the above different processing methods can also be used, which can be determined according to actual needs.

[0208] This embodiment is aimed at HD-FDD terminals under the NTN network. The first information can be determined, and then the transmission behavior of the HD-FDD terminal can be determined based on the first information, thereby clarifying the transmission behavior of the HD-FDD terminal. The transmission behavior can be used to handle the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain, so as to relax the configuration or scheduling requirements of the network equipment, reduce the complexity of network equipment configuration or scheduling, reduce energy consumption on the HD-FDD terminal and network equipment side, and reduce the waste of spectrum resources.

[0209] To illustrate the specific execution process of the HD-FDD terminal, Figure 3 shows a flow chart of a communication method according to an embodiment of the present disclosure, which can be executed on the HD-FDD terminal side and may include the following steps.

[0210] Step S301: The HD-FDD terminal determines first information.

[0211] In some embodiments, the HD-FDD terminal may determine the first information according to a predefined rule of the protocol.

[0212] In some embodiments, the HD-FDD terminal may receive the first information sent by the network device.

[0213] In some embodiments, the HD-FDD terminal can calculate the first information by itself, such as calculating the first information based on satellite ephemeris information, its own position information, and the like.

[0214] In some examples, when the HD-FDD terminal determines the first information according to the predefined rules of the protocol or calculates the first information by itself, the HD-FDD terminal can send the first information to the network device so that the network device can make corresponding scheduling adjustments based on the first information.

[0215] Step S302: The HD-FDD terminal determines its transmission behavior according to the first information.

[0216] In some embodiments, the transmission behavior is used to handle overlapping scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

[0217] In some embodiments, the first information includes at least one of the following:

[0218] Transmission priority; a first time period corresponding to TA pre-compensation reporting; a second time period for switching between uplink and downlink; and a first cell accessed by the HD-FDD terminal.

[0219] In some embodiments, the transmission priority includes at least one of the following:

[0220] Uplink transmission priority; downlink transmission priority; transmission priority of different channels; transmission priority of different signals.

[0221] In some embodiments, the transmission priority is determined based on at least one of the following:

[0222] The receiving timing relationship of the first DCI; transmission cancellation conditions; number of information retransmissions; redundant version of the transmission block; channel type; signal type; first indication information; protocol predefined rules.

[0223] In some embodiments, the first DCI includes: scheduling DCI and / or activation DCI.

[0224] In some embodiments, the transmission behavior of the HD-FDD terminal is determined based on the transmission priority, including: when the priority of the uplink transmission is higher than the priority of the downlink transmission, the HD-FDD terminal cancels receiving the information sent by the network device; or, when the priority of the uplink transmission is lower than the priority of the downlink transmission, the HD-FDD terminal cancels sending information to the network device.

[0225] In some embodiments, when the priority of uplink transmission is lower than the priority of downlink transmission, the HD-FDD terminal cancels sending information to the network device, including: when the priority of uplink transmission is lower than the priority of downlink transmission, and the time when the HD-FDD terminal receives DCI is less than a first threshold from the start time of the uplink transmission, the HD-FDD terminal does not expect to cancel the uplink transmission on the overlapping time domain resources; or, when the priority of uplink transmission is lower than the priority of downlink transmission, and the time when the HD-FDD terminal receives DCI is greater than a first threshold from the start time of the uplink transmission, the HD-FDD terminal cancels sending information to the network device; or, when the priority of uplink transmission is lower than the priority of downlink transmission, and the time when the HD-FDD terminal receives DCI is less than a first threshold from the start time of the uplink transmission, the HD-FDD terminal does not expect to cancel the uplink transmission on the overlapping time domain resources within the first time range, and the HD-FDD terminal cancels the uplink transmission on the remaining overlapping time domain resources except the first time range.

[0226] In some embodiments, the HD-FDD terminal performs unidirectional transmission or does not perform transmission during the first time period.

[0227] In some embodiments, the first time period is determined according to the time when the HD-FDD terminal triggers TA pre-compensation reporting, or the time when the HD-FDD terminal performs the latest TA pre-compensation adjustment.

[0228] In some embodiments, the length of the first time period is determined according to at least one of the following:

[0229] One-way propagation delay of the uplink; one-way propagation delay of the feeder link between the network equipment and the satellite; average scheduling waiting delay.

[0230] In some embodiments, the HD-FDD terminal does not transmit during the second time period.

[0231] In some embodiments, the second time period is determined based on a TA pre-compensation value, or a TA pre-compensation difference between the network device and the HD-FDD terminal.

[0232] In some embodiments, determining the second time period includes: determining the second time period based on a terminal-specific time advance (UE-specific TA), and / or satellite altitude, and / or a time advance offset threshold (offsetThresholdTA) configured by a network device, and / or a cell-common time advance (cell-commonTA).

[0233] In some embodiments, the transmission behavior of the HD-FDD terminal is determined based on the first cell, including: the first cell is a cell of the terrestrial network TN, and the HD-FDD terminal performs the first behavior; or, the first cell is a cell of the non-terrestrial network NTN, and the HD-FDD terminal does not perform the first behavior.

[0234] For the description of the specific examples in this embodiment, please refer to the corresponding description of the embodiments in Figures 1 and 2, and will not be repeated here.

[0235] This embodiment is aimed at HD-FDD terminals under the NTN network. The first information can be determined, and then the transmission behavior of the HD-FDD terminal can be determined based on the first information, thereby clarifying the transmission behavior of the HD-FDD terminal. The transmission behavior can be used to handle the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain, so as to relax the configuration or scheduling requirements of the network equipment, reduce the complexity of network equipment configuration or scheduling, reduce energy consumption on the HD-FDD terminal and network equipment side, and reduce the waste of spectrum resources.

[0236] Figure 4 shows a flow chart of a communication method according to an embodiment of the present disclosure. As shown in Figure 4, the method is applied to be executed on the network device side and may include the following steps.

[0237] Step S401: The network device sends first information to the HD-FDD terminal.

[0238] The first information is used to determine the transmission behavior of the HD-FDD terminal, and the transmission behavior is used to process the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

[0239] In some embodiments, the first information includes at least one of the following:

[0240] Transmission priority; a first time period corresponding to TA pre-compensation reporting; a second time period for switching between uplink and downlink; and a first cell accessed by the HD-FDD terminal.

[0241] In some embodiments, the transmission priority includes at least one of the following:

[0242] Uplink transmission priority; downlink transmission priority; transmission priority of different channels; transmission priority of different signals.

[0243] In some embodiments, the transmission priority is determined based on at least one of the following:

[0244] The receiving timing relationship of the first DCI; transmission cancellation conditions; number of information retransmissions; redundant version of the transmission block; channel type; signal type; first indication information; protocol predefined rules.

[0245] In some embodiments, the first DCI includes: scheduling DCI and / or activation DCI.

[0246] In some embodiments, the transmission priority is used to determine that the HD-FDD terminal performs unidirectional transmission.

[0247] In some embodiments, the HD-FDD terminal performs unidirectional transmission or does not perform transmission during the first time period.

[0248] In some embodiments, the first time period is determined based on at least one of the following:

[0249] The time when the HD-FDD terminal triggers TA pre-compensation reporting; the time when the HD-FDD terminal performs the latest TA pre-compensation adjustment.

[0250] In some embodiments, the length of the first time period is determined according to at least one of the following:

[0251] One-way propagation delay of the uplink; one-way propagation delay of the feeder link between the network equipment and the satellite; average scheduling waiting delay.

[0252] In some embodiments, the HD-FDD terminal does not transmit during the second time period.

[0253] In some embodiments, the second time period is determined based on one of the following:

[0254] TA pre-compensation value; TA pre-compensation difference between the network device and the HD-FDD terminal.

[0255] In some embodiments, the first cell is a cell of a TN network or a cell of an NTN network.

[0256] For the description of the specific examples in this embodiment, please refer to the corresponding description of the embodiments in Figures 1 to 3, and will not be repeated here.

[0257] This embodiment is aimed at HD-FDD terminals under the NTN network. The first information can be determined, and then the transmission behavior of the HD-FDD terminal can be determined based on the first information, thereby clarifying the transmission behavior of the HD-FDD terminal. The transmission behavior can be used to handle the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain, so as to relax the configuration or scheduling requirements of the network equipment, reduce the complexity of network equipment configuration or scheduling, reduce energy consumption on the HD-FDD terminal and network equipment side, and reduce the waste of spectrum resources.

[0258] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0259] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0260] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0261] Figure 5 is a structural diagram of the terminal proposed in an embodiment of the present disclosure. As shown in Figure 5, the terminal may include: at least one of a processing module 51, etc. In some embodiments, the processing module 51 is used to obtain first information; determine the transmission behavior of the HD-FDD terminal based on the first information, and the transmission behavior is used to process the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain. Optionally, the processing module 51 is used to execute at least one of the communication steps such as sending and / or receiving (such as step S201, but not limited to this) executed by the terminal in any of the above methods, which will not be repeated here. Optionally, the processing module 51 is also used to execute at least one of the other steps (such as step S202, but not limited to this) executed by the terminal in any of the above methods, which will not be repeated here.

[0262] Figure 6 is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure. As shown in Figure 6, a terminal may include a transceiver module 61. In some embodiments, transceiver module 61 is configured to transmit first information; wherein, the first information is used to determine the transmission behavior of the HD-FDD terminal. The transmission behavior is used to handle the overlap of scheduling resources corresponding to uplink and downlink transmissions in the time domain. This description is omitted here.

[0263] In some embodiments, the transceiver module 61 may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0264] In some embodiments, the processing module 51 can be a single module or include multiple submodules. Optionally, the multiple submodules each execute all or part of the steps required to be executed by the processing module. Optionally, the processing module and the processor can be interchangeable.

[0265] Figure 7 is a schematic diagram of the structure of a communication device 8100 proposed in an embodiment of the present disclosure. Communication device 8100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 8100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0266] As shown in Figure 7, the communication device 8100 includes one or more processors 8101. The processor 8101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. Optionally, the communication device 8100 is used to perform any of the above methods. Optionally, one or more processors 8101 are used to call instructions to enable the communication device 8100 to perform any of the above methods.

[0267] In some embodiments, the communication device 8100 further includes one or more transceivers 8102. When the communication device 8100 includes one or more transceivers 8102, the transceiver 8102 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S201, but not limited thereto), and the processor 8101 performs at least one of the other steps (for example, step S202, but not limited thereto). In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be interchangeable, the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be interchangeable, and the terms receiver, receiving unit, receiver, and receiving circuit may be interchangeable.

[0268] In some embodiments, the communication device 8100 further includes one or more memories 8103 for storing data. Alternatively, all or part of the memories 8103 may be located outside the communication device 8100. In alternative embodiments, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuits 8104 are connected to the memory 8102 and may be used to receive data from the memory 8102 or other devices, or to send data to the memory 8102 or other devices. For example, the interface circuits 8104 may read data stored in the memory 8102 and send the data to the processor 8101.

[0269] The communication device 8100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG. 7 . The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0270] FIG8 is a schematic diagram of the structure of a chip 8200 according to an embodiment of the present disclosure. If the communication device 8100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 8200 shown in FIG8 , but the present disclosure is not limited thereto.

[0271] The chip 8200 includes one or more processors 8201. The chip 8200 is configured to execute any of the above methods.

[0272] In some embodiments, chip 8200 further includes one or more interface circuits 8202. Terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 8200 further includes one or more memories 8203 for storing data. Alternatively, all or part of memory 8203 may be located external to chip 8200. Optionally, interface circuit 8202 is connected to memory 8203 and may be used to receive data from memory 8203 or other devices, or may be used to send data to memory 8203 or other devices. For example, interface circuit 8202 may read data stored in memory 8203 and send the data to processor 8201.

[0273] In some embodiments, the interface circuit 8202 performs at least one of the communication steps (e.g., step S201, but not limited thereto) in the above method, such as sending and / or receiving. For example, the interface circuit 8202 performing the communication steps (e.g., sending and / or receiving) in the above method means that the interface circuit 8202 performs data exchange between the processor 8201, chip 8200, memory 8203, or a transceiver device. In some embodiments, the processor 8201 performs at least one of the other steps (e.g., steps S202 and S203, but not limited thereto).

[0274] The modules and / or devices described in various embodiments, such as virtual devices, physical devices, and chips, can be arbitrarily combined or separated according to circumstances. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0275] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 8100, causes the communication device 8100 to execute any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto, and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto, and may also be a temporary storage medium.

[0276] The present disclosure also provides a program product, which, when executed by the communication device 8100, enables the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0277] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. A communication method, characterized in that: The method is performed by a half-duplex frequency division multiplexing HD-FDD terminal, and includes: determining first information; A transmission behavior of the HD-FDD terminal is determined according to the first information, wherein the transmission behavior is used to process an overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

2. The method according to claim 1, characterized in that The first information includes at least one of the following: Transmission priority; The first time period corresponding to the timing advance TA pre-compensation reporting; a second time period for switching between uplink and downlink; The first cell accessed by the HD-FDD terminal.

3. The method according to claim 2, characterized in that The transmission priority includes at least one of the following: Uplink transmission priority; downlink transmission priority; Transmission priorities for different channels; Transmission priorities of different signals.

4. The method according to claim 2 or 3, characterized in that Determining the transmission priority according to at least one of the following: a reception timing relationship of the first downlink control information DCI; Transfer cancellation conditions; Number of information retransmissions; Redundant version of the transport block; Channel type; Signal type; First instruction information; Protocol predefined rules.

5. The method according to claim 4, characterized in that The first DCI includes: scheduling DCI and / or activation DCI.

6. The method according to any one of claims 2 to 5, characterized in that Determining a transmission behavior of the HD-FDD terminal according to the transmission priority includes: The priority of uplink transmission is higher than the priority of downlink transmission, and the HD-FDD terminal cancels receiving the information sent by the network device; or The priority of uplink transmission is lower than the priority of downlink transmission, and the HD-FDD terminal cancels sending information to the network device.

7. The method according to claim 6, characterized in that The priority of the uplink transmission is lower than the priority of the downlink transmission, and the HD-FDD terminal cancels sending information to the network device, including at least one of the following: The priority of uplink transmission is lower than the priority of downlink transmission, the time between the HD-FDD terminal receiving the DCI and the start time of the uplink transmission is less than a first threshold, and the HD-FDD terminal does not expect to cancel the uplink transmission on the overlapping time domain resources; The priority of uplink transmission is lower than the priority of downlink transmission, the time between the HD-FDD terminal receiving the DCI and the start time of the uplink transmission is greater than a first threshold, and the HD-FDD terminal cancels sending information to the network device; The priority of the uplink transmission is lower than the priority of the downlink transmission, the time when the HD-FDD terminal receives the DCI is less than a first threshold from the start time of the uplink transmission, the HD-FDD terminal does not expect to cancel the uplink transmission on the overlapping time domain resources within the first time range, and the HD-FDD terminal cancels the uplink transmission on the remaining overlapping time domain resources outside the first time range.

8. The method according to any one of claims 2 to 7, characterized in that The HD-FDD terminal performs unidirectional transmission or does not perform transmission in the first time period.

9. The method according to any one of claims 2 to 8, characterized in that The method further comprises: The first time period is determined according to the time when the HD-FDD terminal triggers TA pre-compensation reporting, or the time when the HD-FDD terminal performs the latest TA pre-compensation adjustment.

10. The method according to any one of claims 2 to 9, characterized in that The length of the first time period is determined according to at least one of the following: One-way propagation delay of the uplink; One-way propagation delay of the feeder link between the network equipment and the satellite; Average scheduling waiting delay.

11. The method according to any one of claims 2 to 10, characterized in that The HD-FDD terminal does not transmit in the second time period.

12. The method according to any one of claims 2 to 11, characterized in that The method further comprises: Determining the second time period based on a TA pre-compensation value; or The second time period is determined based on a TA pre-compensation difference between the network device and the HD-FDD terminal.

13. The method according to any one of claims 2 to 12, characterized in that The second time period is determined according to at least one of the following: Terminal-specific timing advance (UE-specific TA); Satellite altitude; The timing advance offset threshold offsetThresholdTA configured on the network device; Cell common time advance cell-commonTA.

14. The method according to any one of claims 2 to 13, characterized in that Determining, according to the first cell, a transmission behavior of the HD-FDD terminal, including: The first cell is a cell of a terrestrial network TN, and the HD-FDD terminal performs a first behavior; or, The first cell is a cell of a non-terrestrial network (NTN), and the HD-FDD terminal does not perform the first behavior.

15. The method according to any one of claims 1 to 14, characterized in that The determining of the first information includes: Receive the first information sent by the network device.

16. A communication method, characterized in that: Executed by a network device, the method includes: Sending first information to a half-duplex frequency division multiplexing HD-FDD terminal; The first information is used to determine the transmission behavior of the HD-FDD terminal, and the transmission behavior is used to process the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

17. The method according to claim 16, characterized in that The first information includes at least one of the following: Transmission priority; The first time period corresponding to the timing advance TA pre-compensation reporting; a second time period for switching between uplink and downlink; The first cell accessed by the HD-FDD terminal.

18. The method according to claim 17, characterized in that The transmission priority includes at least one of the following: Uplink transmission priority; downlink transmission priority; Transmission priorities for different channels; Transmission priorities of different signals.

19. The method according to claim 17 or 18, characterized in that The transmission priority is determined based on at least one of the following: a reception timing relationship of the first downlink control information DCI; Transfer cancellation conditions; Number of information retransmissions; Redundant version of the transport block; Channel type; Signal type; First instruction information; Protocol predefined rules.

20. The method according to claim 19, characterized in that The first DCI includes: scheduling DCI and / or activation DCI.

21. The method according to any one of claims 17 to 20, characterized in that The transmission priority is used to determine that the HD-FDD terminal performs unidirectional transmission.

22. The method according to any one of claims 17 to 21, characterized in that The HD-FDD terminal performs unidirectional transmission or does not perform transmission in the first time period.

23. The method according to any one of claims 17 to 22, characterized in that The first time period is determined based on at least one of the following: The time when the HD-FDD terminal triggers TA pre-compensation reporting; The time when the HD-FDD terminal last performed TA pre-compensation adjustment.

24. The method according to any one of claims 17 to 23, characterized in that The length of the first time period is determined according to at least one of the following: One-way propagation delay of the uplink; One-way propagation delay of the feeder link between the network equipment and the satellite; Average scheduling waiting delay.

25. The method according to any one of claims 17 to 24, characterized in that The HD-FDD terminal does not transmit in the second time period.

26. The method according to any one of claims 17 to 25, characterized in that The second time period is determined based on one of the following: TA pre-compensation value; A TA pre-compensation difference between the network device and the HD-FDD terminal.

27. The method according to any one of claims 17 to 26, characterized in that The first cell is a cell of a terrestrial network TN or a cell of a non-terrestrial network NTN.

28. A communication method, characterized in that: include: The network device sends first information to the half-duplex frequency division multiplexing HD-FDD terminal; The HD-FDD terminal receives the first information and determines a transmission behavior of the HD-FDD terminal according to the first information, where the transmission behavior is used to process overlapping scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

29. An HD-FDD terminal, characterized in that: include: a processing module configured to determine first information; A transmission behavior of a half-duplex frequency division multiplexing HD-FDD terminal is determined according to the first information, where the transmission behavior is used to process an overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

30. A network device, characterized in that: include: The transceiver module is configured to send first information to a half-duplex frequency division multiplexing HD-FDD terminal; wherein the first information is used to determine the transmission behavior of the HD-FDD terminal, and the transmission behavior is used to process the overlap of scheduling resources corresponding to uplink transmission and downlink transmission in the time domain.

31. A communication device, characterized in that: include: one or more processors; The processor is configured to execute the method according to any one of claims 1 to 15.

32. A communication device, characterized in that: include: one or more processors; The processor is configured to execute the method according to any one of claims 16 to 27.

33. A communication system, characterized in that: The invention comprises a terminal and a network device, wherein the terminal is configured to implement the method according to any one of claims 1 to 15, and the network device is configured to implement the method according to any one of claims 16 to 27.

34. A computer storage medium, wherein: The computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by the processor, the method according to any one of claims 1 to 27 can be implemented.

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