Communication method, communication system and storage medium

Abstract

The present disclosure proposes a communication method, device and storage medium, the method being executed by a terminal, the method comprising: receiving first information sent by a network device, the first information being used for indicating that the terminal needs to execute a target operation, the target operation being related to a conflict of the terminal in an uplink and downlink transmission process; a first timing advance (TA) for performing the target operation is determined. The TA for executing the target operation can be determined, the TA information used by the terminal can be prevented from being inconsistent with the TA used by the base station, and the conflict problem of the terminal during uplink and downlink transmission can be avoided.

Description

Communication method, communication system and storage medium TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to a communication method, a communication system and a storage medium. BACKGROUND

[0002] In a satellite communication system, a reduced capacity (Redcap) type terminal working in half duplex-frequency division duplex (HD-FDD) accesses to a non-terrestrial network (NTN), but there is a conflict in uplink and downlink transmission of the Redcap terminal working in HD-FDD.

[0003] SUMMARY

[0004] The present disclosure provides a communication method, a communication device, a communication system and a storage medium.

[0005] According to a first aspect of the embodiments of the present disclosure, a communication method is provided, the method is executed by a terminal, and the method comprises the following steps: receiving first information sent by a network device, the first information being used to indicate that the terminal needs to execute a target operation, the target operation being related to a conflict of the terminal in uplink and downlink transmission; and determining a first timing advance (TA) for executing the target operation.

[0006] In the above method, by determining the first TA, the time for executing the target operation can be determined, and the conflict of the terminal in uplink and downlink transmission can be avoided.

[0007] According to a second aspect of the embodiments of the present disclosure, a communication method is provided, the method is executed by a network device, and the method comprises the following steps: sending first information to a terminal, the first information being used to indicate that the terminal needs to execute a target operation, the target operation being related to a conflict of the terminal in uplink and downlink transmission.

[0008] In the above method, the terminal can be indicated to execute the target operation through the first information, and the conflict of the terminal in uplink and downlink transmission can be avoided.

[0009] According to a third aspect of the embodiments of the present disclosure, a terminal is provided, comprising a transceiver module, configured to receive first information sent by a network device, the first information being used to indicate that the terminal needs to execute a target operation, the target operation being related to a conflict of the terminal in uplink and downlink transmission; and a processing module, configured to determine a first TA for executing the target operation.

[0010] According to a fourth aspect of the embodiments of the present disclosure, a network device is provided, including a transceiver module, configured to send first information to a terminal, the first information being used to indicate that the terminal needs to perform a target operation, the target operation being related to a conflict of the terminal in an uplink and downlink transmission process.

[0011] According to a fifth aspect of the embodiments of the present disclosure, a communication device is provided, including one or more processors, wherein the one or more processors are configured to invoke instructions to cause the communication device to perform the method described in any one of the first aspect of the present disclosure, or to perform the method described in any one of the second aspect of the present disclosure.

[0012] According to a sixth aspect of the embodiments of the present disclosure, a communication system is provided, including a network device and a terminal, wherein the terminal is configured to implement the method of the first aspect, and the network device is configured to implement the method of the second aspect.

[0013] According to a seventh aspect of the embodiments of the present disclosure, a storage medium is provided, the storage medium storing instructions, when the instructions are executed on a communication device, causing the communication device to perform the method of any one of the first aspect or the second aspect. BRIEF DESCRIPTION OF DRAWINGS

[0014] The above described and / or additional aspects and advantages of the present disclosure will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0015] FIG. 1 is a schematic diagram of the architecture of some communication systems according to embodiments of the present disclosure;

[0016] FIG. 2 is a schematic diagram of the interaction of a communication method according to embodiments of the present disclosure;

[0017] FIGS. 3a-3c are schematic diagrams of the flow of some communication methods according to embodiments of the present disclosure;

[0018] FIGS. 4a-4c are schematic diagrams of the flow of some other communication methods according to embodiments of the present disclosure;

[0019] FIG. 5 is a schematic diagram of the flow of some other communication methods according to embodiments of the present disclosure;

[0020] FIG. 6a is a schematic diagram of the structure of a terminal according to an embodiment of the present disclosure;

[0021] FIG. 6b is a schematic diagram of the structure of a network device according to an embodiment of the present disclosure;

[0022] FIG. 7a is a schematic diagram of the structure of a communication device according to an embodiment of the present disclosure;

[0023] FIG. 7b is a schematic diagram of the structure of a chip according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0024] The embodiments of the present disclosure provide a communication method, a communication device, a communication system and a storage medium.

[0025] In a first aspect, the embodiments of the present disclosure provide a communication method, which is performed by a terminal, and the method comprises: receiving first information sent by a network device, the first information being used to indicate that the terminal needs to perform a target operation, the target operation being related to a conflict of the terminal in an uplink and downlink transmission process, and determining a first timing advance TA for performing the target operation.

[0026] In the above embodiment, by determining the first timing advance TA, the time for performing the target operation can be determined, and the conflict of the terminal in the uplink and downlink transmission process can be avoided.

[0027] In some embodiments, the conflict of the terminal in the uplink and downlink transmission process includes at least one of the following: collision between a dynamic scheduling transmission and a semi-static preconfigured transmission in a same time unit; collision between a dynamic scheduling transmission / reception and a dynamic scheduling reception / transmission in the same time unit; collision between a semi-static preconfigured transmission / reception and a semi-static preconfigured reception / transmission in the same time unit; collision between a synchronization signal block (SSB) and an uplink transmission in the same time unit, the uplink transmission including at least one of a semi-static preconfigured uplink transmission and a dynamic scheduling uplink transmission; collision between a valid random access occasion (RO) or a Msg.A PUSCH and a downlink reception in the same time unit, the downlink reception including at least one of a semi-static preconfigured downlink reception and a dynamic scheduling downlink reception.

[0028] In the above embodiment, the type of the conflict of the terminal in the uplink and downlink transmission process can be determined.

[0029] In some embodiments, the target operation includes at least one of the following: a first operation for determining available time units in dynamic scheduling and / or semi-static scheduling; a second operation for determining unavailable time domain symbol positions; and a third operation for determining time unit information of uplink transmission or downlink reception.

[0030] In the above embodiment, the target operation can be determined, and the conflict of the terminal in the uplink and downlink transmission process can be avoided.

[0031] In some embodiments, determining the first timing advance TA for performing the target operation includes: determining the first TA based on a predefined rule.

[0032] In the above embodiments, the first timing advance TA can be determined, so as to facilitate determination of the TA of the target operation, and to facilitate avoidance of conflict of the terminal in uplink and downlink transmission.

[0033] In some embodiments of the first aspect, based on the predefined rule, the determining of the first TA comprises at least one of the following: determining, as the first TA, a TA of the terminal last reported to the network device; determining, as the first TA, a TA of the terminal based on configuration information sent by the network device and position information of the terminal; determining, as the first TA, a TA determined based on ephemeris information broadcast by the network device; determining, as the first TA, a TA determined based on a timing offset Koffset value broadcast by the network device; and determining, as the first TA, a TA determined based on a target timing parameter broadcast by the network device.

[0034] In the above embodiments, the first timing advance TA can be determined, so as to facilitate determination of the TA of the target operation, and to facilitate avoidance of conflict of the terminal in uplink and downlink transmission.

[0035] In some embodiments of the first aspect, the determining of the first timing advance TA for performing the target operation comprises: receiving a second TA sent by the network device through scheduling indication or high layer signaling; and determining the first TA based on the second TA.

[0036] In the above embodiments, the first TA can be determined according to the indication of the network device, so as to facilitate determination of the TA of the target operation, and to facilitate avoidance of conflict of the terminal in uplink and downlink transmission.

[0037] In some embodiments of the first aspect, the determining of the first TA based on the second TA sent by the network device comprises at least one of the following: determining, as the first TA, the second TA; and adjusting, based on the second TA, a TA of the terminal, and determining, as the first TA, the adjusted TA.

[0038] In the above embodiments, the first TA can be determined according to the indication of the network device, so as to facilitate determination of the TA of the target operation, and to facilitate avoidance of conflict of the terminal in uplink and downlink transmission.

[0039] In some embodiments of the first aspect, the method further comprises: determining that the terminal supports a TA reporting function; and sending, to the network device, the first TA.

[0040] In the above embodiments, when the terminal supports the TA reporting, the TA is reported to the network device, which can facilitate the network device to determine the TA of the terminal, implement consistency of the TA of the terminal and the network device, and facilitate avoidance of conflict of the terminal in uplink and downlink transmission.

[0041] In some embodiments of the first aspect, in some embodiments, the second TA is a TA determined by the network device, or a TA obtained by adjusting a TA reported by the terminal.

[0042] In the above embodiments, the terminal can report the TA, so that the network device can adjust the TA according to the TA reported by the terminal, so as to make the TA of the terminal consistent with the TA of the network device, and avoid the conflict of the terminal in uplink and downlink transmission.

[0043] In the above embodiments, the terminal can be instructed to perform the target operation through the first information, so as to avoid the conflict of the terminal in uplink and downlink transmission.

[0044] In the above embodiments, the terminal can be instructed to perform the target operation through the first information, so as to avoid the conflict of the terminal in uplink and downlink transmission.

[0045] In some embodiments of the second aspect, in some embodiments, the conflict of the terminal in uplink and downlink transmission includes at least one of the following: collision between dynamic scheduling transmission and semi-static preconfigured transmission in the same time unit; collision between dynamic scheduling transmission / reception and dynamic scheduling reception / transmission in the same time unit; collision between semi-static preconfigured transmission / reception and semi-static preconfigured reception / transmission in the same time unit; collision between synchronization broadcast block (SSB) and uplink transmission in the same time unit, the uplink transmission including at least one of semi-static preconfigured uplink transmission and dynamic scheduling uplink transmission; collision between valid random access occasion (RO) or Msg.A PUSCH and downlink reception in the same time unit, the downlink reception including at least one of semi-static preconfigured downlink reception and dynamic scheduling downlink reception.

[0046] In the above embodiments, the type of the conflict of the terminal in uplink and downlink transmission can be determined.

[0047] In some embodiments of the second aspect, in some embodiments, the target operation includes at least one of the following: a first operation for determining available time units in dynamic scheduling and / or semi-static scheduling; a second operation for determining unavailable time domain symbol positions; and a third operation for determining time unit information of uplink transmission or downlink reception.

[0048] In the above embodiments, the target operation can be determined, so as to avoid the conflict of the terminal in uplink and downlink transmission.

[0049] In some embodiments of the second aspect, in some embodiments, the method further comprises at least one of: sending configuration information to the terminal, the configuration information being used by the terminal to determine the first TA for performing the target operation; broadcasting ephemeris information, the ephemeris information being used by the terminal to determine the first TA for performing the target operation; broadcasting a timing offset Koffset value, the Koffset value being used by the terminal to determine the first TA for performing the target operation; broadcasting a target timing parameter, the target timing parameter being used by the terminal to determine the first TA for performing the target operation; sending a second TA to the terminal through scheduling indication or high layer signaling, the second TA being used by the terminal to determine the first TA for performing the target operation.

[0050] In the above embodiments, the network device can send configuration information to the terminal to assist the terminal in determining the first TA, so as to facilitate determination of the TA for the target operation and to facilitate avoidance of conflict of the terminal in uplink and downlink transmission.

[0051] In some embodiments of the second aspect, in some embodiments, the second TA is a TA determined by the network device or a TA obtained by the network device after adjusting a TA reported by the terminal.

[0052] In the above embodiments, the network device can adjust the TA according to the TA reported by the terminal, so as to achieve consistency of the TA between the terminal and the network device and to facilitate avoidance of conflict of the terminal in uplink and downlink transmission.

[0053] In some embodiments of the second aspect, in some embodiments, the method further comprises: receiving the first TA for performing the target operation sent by the terminal, the terminal supporting a TA reporting function.

[0054] In the above embodiments, when the terminal supports the TA reporting, the network device can receive the TA reported by the terminal.

[0055] In a third aspect, the embodiments of the present disclosure provide a terminal, comprising: a transceiver module, configured to receive first information sent by a network device, the first information being used to indicate that the terminal needs to perform a target operation, the target operation being related to conflict of the terminal in uplink and downlink transmission; and a processing module, configured to determine a first timing advance TA for performing the target operation.

[0056] In a fourth aspect, the embodiments of the present disclosure provide a network device, comprising: a transceiver module, configured to send first information to a terminal, the first information being used to indicate that the terminal needs to perform a target operation, the target operation being related to conflict of the terminal in uplink and downlink transmission.

[0057] In a fifth aspect, the embodiments of the present disclosure provide a communication device, comprising: one or more processors; wherein the one or more processors are configured to invoke instructions to cause the communication device to perform the method of any one of the first aspect or the method of any one of the second aspect.

[0058] In a sixth aspect, the embodiments of the present disclosure provide a communication system, comprising: a terminal, a network device; wherein the terminal is configured to perform the method described in the first aspect and the optional implementation manners of the first aspect, and the network device is configured to perform the method described in the second aspect and the optional implementation manners of the second aspect.

[0059] In a seventh aspect, the embodiments of the present disclosure provide a storage medium, and the computer storage medium stores computer executable instructions; the computer executable instructions are executed by a processor, and the method described in the first aspect, the optional implementation manners of the first aspect, the second aspect, and the optional implementation manners of the second aspect can be performed.

[0060] It can be understood that the terminal, the network device, the communication device, the communication system, and the storage medium are all used to perform the method provided by the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved are referred to the beneficial effects in the corresponding method, which will not be described here.

[0061] The embodiments of the present disclosure provide a communication method and a communication device, a communication system, and a storage medium. In some embodiments, the terms of the communication method and the information processing method can be replaced with each other, the terms of the terminal and the network device can be replaced with each other, and the terms of the information processing system and the communication system can be replaced with each other.

[0062] The embodiments of the present disclosure are not exhaustive, but only illustrate some embodiments, and are not specific limitations on the protection scope of the present disclosure. In the case of no contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily, for example, the scheme after removing some steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily, in addition, the optional implementation manners in an embodiment can be combined arbitrarily; in addition, the embodiments can be combined arbitrarily, for example, some or all steps of different embodiments can be combined arbitrarily, and an embodiment can be combined with the optional implementation manners of other embodiments.

[0063] In each embodiment of the present disclosure, the terms and / or descriptions of the embodiments are consistent and can be referred to each other if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form a new embodiment according to their inherent logical relationship.

[0064] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments, and not as a limitation on the present disclosure.

[0065] In the embodiments of the present disclosure, an element represented in singular form, such as "a", "an", "the", "said", "the aforementioned", "the foregoing", "this", and the like, unless otherwise specified, can represent "one and only one", or can represent "one or more", "at least one", and the like. For example, in the case of using an article such as "a", "an", "the" in English, the noun after the article can be understood as a singular expression, or can be understood as a plural expression.

[0066] In the embodiments of the present disclosure, "plurality" refers to two or more.

[0067] In some embodiments, the terms "at least one of", "at least one of", "at least one of", "one or more", "a plurality of", "multiple", and the like can be replaced with each other.

[0068] In the embodiments of the present disclosure, the description manner such as "at least one of A, B, C, and the like", "A and / or B and / or C, and the like" includes any one of A, B, C, and the like existing alone, and also includes any combination of any multiple of A, B, C, and the like, each of which can exist alone; for example, "at least one of A, B, C" includes the cases of A alone, B alone, C alone, A and B in combination, A and C in combination, B and C in combination, A and B and C in combination; for example, A and / or B includes the cases of A alone, B alone, and the combination of A and B.

[0069] In some embodiments, the description manner such as "A in one case, and B in another case", "in response to one case A, in response to another case B", and the like, according to the case, can include the following technical solutions: A is executed regardless of B, that is, A in some embodiments; B is executed regardless of A, that is, B in some embodiments; A and B are selectively executed, that is, A and B are selected from A and B to be executed in some embodiments; A and B are both executed, that is, A and B in some embodiments. When there are more branches such as A, B, C, and the like, it is similar to the above.

[0070] The prefix words of "first", "second" and the like in the embodiments of the present disclosure are merely used to distinguish different description objects, and do not constitute limitation on the position, order, priority, quantity or content of the description objects. The description objects are described in the claims or embodiments, and should not be construed as redundant limitation because of the use of the prefix words. For example, the description object is "field", and the ordinal words before "field" in "first field" and "second field" do not limit the position or order between "fields". "First" and "second" do not limit whether the "fields" modified thereby are in the same message, nor do they limit the order of "first field" and "second field". For another example, the description object is "level", and the ordinal words before "level" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description object is not limited by the ordinal words, and can be one or more. For example, "first device", wherein the quantity of "device" can be one or more. In addition, the objects modified by different prefix words can be the same or different. For example, the description object is "device", and "first device" and "second device" can be the same device or different devices, and their types can be the same or different. For another example, the description object is "information", and "first information" and "second information" can be the same information or different information, and their contents can be the same or different.

[0071] In some embodiments, "including A", "containing A", "for indicating A", "carrying A" can be interpreted as directly carrying A, or indirectly indicating A.

[0072] In some embodiments, the terms "in response to", "in response to determining", "in the case of", "when", "when", "if", "if" and the like can be replaced with each other.

[0073] In some embodiments, the terms "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 lower than", "above" and the like can be replaced with each other, and the terms "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", "below" and the like can be replaced with each other.

[0074] In some embodiments, an apparatus or the like can be interpreted as an entity, and can also be interpreted as virtual, and the name thereof is not limited to the name described in the embodiments, and the terms "apparatus", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject" and the like can be replaced with each other.

[0075] 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 can be replaced with each other.

[0076] 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," and so on can be replaced with each other.

[0077] In some embodiments, an access network device, a core network device, or a network device can be replaced with a terminal. For example, for a structure in which communication between an access network device, a core network device, or a network device and a terminal is replaced with communication between a plurality of terminals (for example, also referred to as device-to-device (D2D), vehicle-to-everything (V2X), and so on), embodiments of the present disclosure can also be applied. In this case, a structure in which a terminal has all or part of the functions of an access network device can also be provided. Furthermore, the language of "uplink," "downlink," and so on can also be replaced with language corresponding to communication between terminals (for example, "side"). For example, an uplink channel, a downlink channel, and so on can be replaced with a side channel, and an uplink, a downlink, and so on can be replaced with a side link.

[0078] In some embodiments, a terminal can be replaced with an access network device, a core network device, or a network device. In this case, a structure in which an access network device, a core network device, or a network device has all or part of the functions of a terminal can also be provided.

[0079] In some embodiments, the names of information and the like are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", "chip", and the like can be replaced with each other.

[0080] In some embodiments, terms such as "uplink", "uplink", "physical uplink", and the like can be replaced with each other, terms such as "downlink", "downlink", "physical downlink" and the like can be replaced with each other, terms such as "side", "sidelink", "sidelink communication", "sidelink communication", "direct connection", "direct connection link", "direct connection", "direct connection link communication" and the like can be replaced with each other.

[0081] In some embodiments, terms such as "downlink control information (DCI)", "downlink (DL) assignment", "DL DCI", "uplink (UL) grant", "UL DCI" and the like can be replaced with each other.

[0082] In some embodiments, terms such as "physical downlink shared channel (PDSCH)", "DL data" and the like can be replaced with each other, and terms such as "physical uplink shared channel (PUSCH)", "UL data" and the like can be replaced with each other.

[0083] In some embodiments, terms such as "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like can be replaced with each other.

[0084] In some embodiments, the terms "synchronization signal (SS)", "synchronization signal block (SSB)", "reference signal (RS)", "pilot", "pilot signal" and the like can be replaced with each other.

[0085] In some embodiments, the terms "moment", "time point", "time", "time position" and the like can be replaced with each other, and the terms "time length", "time period", "time window", "window", "time" and the like can be replaced with each other.

[0086] In some embodiments, the terms "acquire", "obtain", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" and the like can be replaced with each other, which can be interpreted as receiving from other subjects, obtaining from protocols, obtaining by oneself, autonomously implementing and the like.

[0087] In some embodiments, the terms "send", "transmit", "report", "issue", "transmit", "bidirectional transmission", "send and / or receive" and the like can be replaced with each other.

[0088] In some embodiments, "predetermined" and "preset" can be interpreted as being previously specified in protocols and the like, or can be interpreted as being previously set by devices and the like to perform actions.

[0089] In some embodiments, determining can be interpreted as judging, deciding, judging, calculating, computing, processing, deriving, investigating, searching, looking up, retrieving, inquiring, ascertaining, receiving, transmitting, inputting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, "assuming", "expecting", "considering", broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but is not limited thereto.

[0090] In some embodiments, determining or judging can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values (for example, comparison with a predetermined value), but is not limited thereto.

[0091] In some embodiments, "network" can be interpreted as devices (for example, access network devices, core network devices, etc.) contained in the network.

[0092] In some embodiments, "not expecting to receive" can be interpreted as not receiving in time domain resources and / or frequency domain resources, or can be interpreted as, after receiving data, etc., not performing subsequent processing on the data, etc.; "not expecting to send" can be interpreted as not sending, or can be interpreted as sending but not expecting the receiving party to respond to the content of the sending.

[0093] In some embodiments, obtaining data, information, etc. can comply with the laws and regulations of the country where the location is located.

[0094] In some embodiments, data, information, and the like can be acquired after obtaining user consent. To solve the above problems, the present disclosure proposes an information indication method and a communication device, a communication system, and a storage medium.

[0095] FIG. 1 is a schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG. 1, the communication system 100 can include a terminal 101 and a network device 102.

[0096] In some embodiments, the terminal includes at least one of a mobile phone, a wearable device, an Internet of Things device, a communication-capable automobile, a smart automobile, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal 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 smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, a wireless terminal device in smart home, and the like, but is not limited thereto.

[0097] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network, and the access network device can include at least one of an evolved NodeB (eNB) in a 5G communication system, a next generation eNB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6th generation mobile communication system (6th generation mobile networks or 6th generation wireless systems, 6G), an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, an access node in a wireless fidelity (WiFi) system, but is not limited thereto.

[0098] In some embodiments, the technical solutions of the present disclosure can be applied to an Open RAN architecture, at this time, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be realized through software or programs.

[0099] In some embodiments, the access network device can be composed of a central unit (CU) and a distributed unit (DU), wherein the CU can also be referred to as a control unit (control unit), and the CU-DU structure can split the protocol layers of the access network device, and the functions of part of the protocol layers are controlled by the CU, and the functions of the remaining part or all of the protocol layers are distributed in the DU and controlled by the CU, but the present disclosure is not limited thereto.

[0100] In some embodiments, the core network device can be one device including one or more network elements, or can be multiple devices or device groups each including all or part of the one or more network elements. The network element can be virtual or physical. The core network includes, for example, at least one of an evolved packet core (EPC), a 5G core network (5GCN), and a next generation core (NGC).

[0101] In some embodiments, the one or more network elements described above can include, for example, an AMF, a UPF, an MME, and the like, and can also include other network elements such as a policy control function (PCF), an application function (AF), a network application function (NAF), an authentication and key management for applications anchor function (AAnF), a bootstrapping server function (BSF), a session management function (SMF), and the like.

[0102] It can be understood that the communication system described in the embodiments of the present disclosure is for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions proposed in the embodiments of the present disclosure. It can be known by those skilled in the art that, as the system architecture evolves and new business scenarios appear, the technical solutions proposed in the embodiments of the present disclosure are also applicable to similar technical problems.

[0103] The following embodiments of the present disclosure can be applied to the communication system 100 shown in FIG. 1 or part of the subject, but are not limited thereto. The subjects shown in FIG. 1 are exemplary, and the communication system can include all or part of the subjects in FIG. 1, or other subjects other than those in FIG. 1. The number and form of each subject is arbitrary, and the connection relationship between the subjects is exemplary. The subjects can not be connected or can be connected, and the connection can be in any manner, can be direct connection or indirect connection, and can be wired connection or wireless connection.

[0104] Embodiments of the present disclosure can be applied to 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 new radio (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 (Bluetooth (registered trademark)), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), system using other communication methods, next-generation system expanded based thereon, and the like. Further, a plurality of systems can be applied in combination (for example, combination of LTE or LTE-A and 5G, and the like).

[0105] The continuous emergence of new Internet applications such as new generation of augmented reality (AR) / virtual reality (VR) and vehicle-to-vehicle communication puts higher requirements on wireless communication technology, which drives the continuous evolution of wireless communication technology to meet the needs of applications. At present, cellular mobile communication technology is in the evolution stage of new generation technology. One important feature of the new generation technology is to support flexible configuration of multiple service types. Different service types have different requirements for wireless communication technology. For example, the main requirements of enhanced mobile broadband (eMBB) service type focus on large bandwidth and high rate; the main requirements of ultra reliable low latency communication (URLLC) service type focus on high reliability and low latency; the main requirements of massive machine type communication (mMTC) service type focus on large number of connections. Therefore, the new generation of wireless communication system needs flexible and configurable design to support the transmission of multiple service types.

[0106] In the research of wireless communication technology, satellite communication is considered as an important aspect of the development of future wireless communication technology. Satellite communication refers to the communication between radio communication devices on the ground using satellites as relays. The satellite communication system is composed of satellite part and ground part. The characteristics of satellite communication are: large communication range; communication can be carried out between any two points as long as they are within the coverage of satellite transmission; not easily affected by land disasters (high reliability). As a supplement to the current ground cellular communication system, satellite communication has the following advantages:

[0107] 1. Extended coverage: For areas that cannot be covered by the current cellular communication system or have high coverage costs, such as oceans, deserts, remote mountainous areas, etc., satellite communication can solve the communication problem.

[0108] 2. Emergency communication: In the case of extreme conditions such as earthquakes that cause the infrastructure of cellular communication to be unavailable, satellite communication can quickly establish communication connection.

[0109] 3. Provide industry applications: For example, for long-distance transmission of delay-sensitive services, satellite communication can be used to reduce the delay of service transmission.

[0110] It can be predicted that in the future wireless communication system, satellite communication system and terrestrial cellular communication system will gradually realize deep integration, and truly realize the intelligent connection of everything.

[0111] In a satellite communication system, the terminal type supporting Redcap working in HD-FDD accesses to the NTN network. Exemplarily, the collision problem of uplink and downlink transmission of HD-FDD Redcap can be solved by pre-defined rules or based on base station or terminal implementation.

[0112] According to the scheduling type of the transmitted information and the type of the transmitted information, there are a total of 5 collision types as follows:

[0113] 1. Collision between dynamic scheduling transmission and semi-static pre-configuration transmission in the same time unit;

[0114] 2. Collision between dynamic scheduling transmission / reception and dynamic scheduling reception / transmission in the same time unit;

[0115] 3. Collision between semi-static pre-configuration transmission / reception and semi-static pre-configuration reception / transmission in the same time unit;

[0116] 4. Collision between Synchronization Signal Block (SSB) and uplink transmission (including semi-static pre-configuration uplink transmission and dynamic scheduling uplink transmission) in the same time unit;

[0117] 5. Collision between valid Random Access Occasion (RO) / Msg.A PUSCH and downlink reception (including semi-static pre-configuration downlink reception and dynamic scheduling downlink reception) in the same time unit.

[0118] The dynamic scheduled transmission described in the above collision types is the scheduling based on the indication of the downlink control information (DCI). In the uplink transmission, the transmission of PUSCH, physical uplink control channel (PUCCH), physical random access channel (PRACH) or sounding reference signal (SRS) is included, which is indicated by the DCI. In the downlink transmission, the transmission of PDSCH or channel state information reference signal (CSI-RS) is included, which is indicated by the DCI. The semi-static preconfigured transmission is the transmission of the time-frequency resource preconfigured by the radio resource control (RRC) signaling. The information is transmitted in the preset time-frequency resource. In the downlink transmission, the preconfigured PDCCH (type 0 / 0A / 1 / 2 CSS), PDSCH, CSI-RS or DL PRS is included, and in the uplink transmission, the preconfigured PUSCH, PUCCH and SRS are included.

[0119] The solution to the above species collision in the related art is as follows:

[0120] 1. Collision between dynamic scheduled transmission / reception and dynamic scheduled reception / transmission

[0121] The dynamic scheduling strategy is determined by the network, and the network generally performs dynamic scheduling according to the capability of the terminal. For the HD-FDD terminal that cannot simultaneously transmit and receive, the network will not simultaneously schedule the terminal to receive and transmit. Therefore, this type of collision can be solved by relying on the scheduling of the network. At the terminal side, the terminal side does not expect to receive the PDCCH respectively indicating the transmission and reception in the same time unit.

[0122] 2. Collision between semi-static preconfigured transmission / reception and semi-static preconfigured reception / transmission

[0123] Similar to the collision between dynamic scheduled transmission / reception and dynamic scheduled reception / transmission, since the semi-static transmission configuration is determined by the network, the network will not preconfigure the HD-FDD to simultaneously transmit and receive. Therefore, at the terminal side, the terminal side does not expect the preconfigured information to be configured to transmit and receive in the same time unit.

[0124] 3. Collision between dynamic scheduled transmission and semi-static preconfigured transmission

[0125] Since this type of collision already exists in TDD systems of Rel-15 NR, HD-FDD reuses the handling in Rel-15 TDD systems.

[0126] When the pre-configured transmission is downlink reception and the dynamic scheduling is uplink transmission, the current pre-configured downlink reception is dropped if any of the scheduled uplink transmission symbols is the same as the downlink reception symbol.

[0127] When the pre-configured transmission is uplink transmission and the dynamic scheduling is downlink reception, the timing of the transmission needs to be determined first, and then whether to cancel the strategy is determined according to the timing.

[0128] Suppose the time corresponding to the last symbol of the CORESET to which the DCI detected by the terminal belongs is k. If the first symbol of the pre-configured uplink PUSCH / PUSCH is located in k and k+T proc，2 In this case, the terminal does not cancel the pre-configured PUSCH / PUCCH transmission within this time period. In addition, the terminal cancels the PUSCH / PUCCH within the pre-configured time unit, or the actual repeated transmission of PUSCH or PRACH transmission.

[0129] Suppose the time corresponding to the last symbol of the CORESET to which the DCI detected by the terminal belongs is k. If the first symbol of the pre-configured SRS is located in k and k+T proc，2 Within this time period, then the terminal does not cancel the transmission from the first symbol of the SRS to k+T proc，2 Within this time period. Instead, the transmission of the SRS after k+T proc，2 is canceled.

[0130] Among them, the PUSCH preparation time under the terminal capability 1. Specifically, it is assumed that the SCS corresponding to the PDCCH scheduling PUCCH, PUSCH, or SRS and the SCS or u r The direct minimum value. When the subcarrier spacing of PRACH is not less than 15 kHz, u r equals the SCS corresponding to PRACH, otherwise u r = 0.

[0131] 4. Collision between SSB and uplink transmission (including semi-static pre-configured uplink transmission and dynamically scheduled uplink transmission)

[0132] This type of collision also exists in the NR TDD system, and the conclusions of multiplexing the processing mode in the NR TDD can be considered. That is, the transmission of the SSB is given priority, and the preconfigured uplink transmission is abandoned. For the SSB and the dynamically scheduled uplink transmission, when the uplink transmission collides with the SSB, the uplink transmission is abandoned, and the reception of the SSB is given priority.

[0133] 5. Collision between valid RO / Msg.A PUSCH and downlink reception (including semi-static preconfigured downlink reception and dynamically scheduled downlink reception, SSB)

[0134] The valid RO includes the PRACH resource in the 4-step RACH and also includes the Msg.A PRACH resource in the 2-step RACH. The terminal does not always need to perform random access, and often initiates random access due to some event trigger. Therefore, if a fixed rule is made to constrain the transmission, it will be detrimental to the flexibility of the transmission. Therefore, for this type of collision, the terminal implementation can be given to solve it.

[0135] For the above processing scheme, in the NTN scenario, due to the rapid movement of the satellite, the TA of the terminal changes very quickly. The TA information used by the terminal may not match the TA information of the terminal known by the base station, which affects the collision of the uplink and downlink transmission of the terminal supporting HD-FDD.

[0136] To solve the above problem, the present disclosure proposes a communication method, which can effectively solve the problem of uplink and downlink collision in the case that the TA information used by the terminal may not match the TA information of the terminal known by the base station, and ensure the effectiveness of data transmission. The specific content of the method is as follows.

[0137] FIG. 2 is an interaction schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 2, the embodiment of the present disclosure relates to a communication method for a communication system 100, which can include a terminal 101 and a network device 102. The above method includes the following steps.

[0138] In step 2101, the network device sends configuration information to the terminal.

[0139] In some embodiments, the network device can send configuration information to the terminal, and the configuration information is used by the terminal to determine the first TA of the target operation.

[0140] In some embodiments, the network device can further configure assistance information for the terminal, where the assistance information can be broadcast ephemeris information used by the terminal to determine the first TA for performing the target operation, or can be a broadcast timing offset Koffset value used by the terminal to determine the first TA for performing the target operation, or can be a broadcast target timing parameter used by the terminal to determine the first TA for performing the target operation.

[0141] In other words, the network device can configure information for the terminal, and the configured information can be used to assist the terminal in determining the first TA for performing the target operation.

[0142] Specifically, the assistance information can be one of the configuration information, and the assistance information can be included in the configuration information and sent by the network device to the terminal, or the network device can broadcast the assistance information, for example, the network device can broadcast ephemeris information, broadcast timing offset Koffset value information, broadcast target timing parameter, etc., and the terminal can obtain the assistance information by listening to the broadcast. The disclosure does not limit the manner of obtaining the assistance information.

[0143] In some embodiments, this step is an optional step. When the terminal can determine the first TA according to a predefined rule, the network device can not send the configuration information to the terminal, and this step can be omitted.

[0144] Step 2102: The network device sends first information to the terminal.

[0145] In some embodiments, the first information can be used to indicate that the terminal needs to perform a target operation, and the target operation is related to a conflict of the terminal in the uplink and downlink transmission process. In other words, the network device can indicate the terminal to perform the target operation through the first information.

[0146] In some embodiments, the conflict of the terminal in the uplink and downlink transmission process includes at least one of the following:

[0147] Collision between dynamically scheduled transmission and semi-static preconfigured transmission in the same time unit;

[0148] Collision between dynamically scheduled transmission / reception and dynamically scheduled reception / transmission in the same time unit;

[0149] Collision between semi-static preconfigured transmission / reception and semi-static preconfigured reception / transmission in the same time unit;

[0150] Collision between a synchronization broadcast block SSB and an uplink transmission in the same time unit, where the uplink transmission includes at least one of a semi-static preconfigured uplink transmission and a dynamically scheduled uplink transmission;

[0151] a collision between a valid random access occasion (RO) or Msg. A PUSCH on the same time unit and a downlink reception, the downlink reception including at least one of a semi-statically pre-configured downlink reception, a dynamically scheduled downlink reception.

[0152] In some embodiments, the target operation includes at least one of:

[0153] a first operation for determining available time units in dynamic scheduling and / or semi-static scheduling, i.e., slot counting;

[0154] a second operation for determining invalid symbol positions in time domain, i.e., invalid symbol.

[0155] a third operation for determining time unit information of uplink transmission or downlink reception.

[0156] In some embodiments, this step is an optional step. When the terminal does not need to perform the target operation, the network device can not send the first information to the terminal, and this step can be omitted.

[0157] Step 2103: The network device sends a second TA to the terminal.

[0158] In some embodiments, the network device can send the second TA to the terminal through scheduling indication or high layer signaling, and the second TA is used by the terminal to determine the first TA for performing the target operation.

[0159] In some embodiments, for example, the second TA is the TA determined by the network device.

[0160] In other words, the network device can send the target TA to the terminal, which can facilitate the terminal to determine the TA for performing the target operation according to the TA, for example, the terminal can adjust the TA of the terminal according to the received TA to obtain the first TA for performing the target operation.

[0161] In some embodiments, for example, the second TA can be the TA obtained by the network device by adjusting the TA reported by the terminal.

[0162] In other words, the network device can receive the first TA reported by the terminal, and determine the second TA according to the first TA, for example, the network device can adjust the TA according to the received first TA to obtain the second TA.

[0163] In some embodiments, this step is an optional step. When the terminal does not determine the first TA for performing the target operation based on the second TA, the network device can not send the second TA to the terminal.

[0164] Step 2104: The terminal determines a first timing advance (TA).

[0165] In some embodiments, the terminal can determine a first timing advance TA, and the terminal can determine the first TA in a manner comprising at least one of the following.

[0166] Manner 1

[0167] In some embodiments, determining the first timing advance TA for performing the target operation comprises determining the first TA based on a predefined rule.

[0168] In some embodiments, determining the first TA based on the predefined rule comprises at least one of the following:

[0169] determining a TA last reported by the terminal to the network device as the first TA;

[0170] determining a TA of the terminal based on configuration information sent by the network device and location information of the terminal as the first TA;

[0171] determining a TA based on ephemeris information broadcast by the network device as the first TA;

[0172] determining a TA based on a timing offset Koffset value broadcast by the network device as the first TA;

[0173] determining a TA based on a target timing parameter broadcast by the network device as the first TA.

[0174] Optionally, the terminal can determine a TA value last reported, and continue to use the TA as the first TA for performing the target operation.

[0175] Optionally, the terminal can determine a current TA value, for example, the terminal can determine the current TA value according to information configured by the network device and location information of the terminal, and use the TA as the first TA for performing the target operation.

[0176] Optionally, the terminal can determine a current TA value, for example, the terminal can determine the TA based on ephemeris information broadcast by the network device, and use the TA as the first TA for performing the target operation.

[0177] Optionally, the terminal can determine a current TA value, for example, the terminal can determine the TA according to a timing offset Koffset value broadcast by the network device, and use the TA as the first TA for performing the target operation.

[0178] Optionally, the terminal can determine a current TA value, for example, the terminal can determine the TA according to a target timing parameter broadcast by the network device, and use the TA as the first TA for performing the target operation.

[0179] Manner 2

[0180] In some embodiments, determining the first timing advance TA for performing the target operation comprises: receiving the second TA sent by the network device through scheduling indication or high layer signaling; and determining the first TA based on the second TA.

[0181] In some embodiments, determining the first TA based on the second TA sent by the network device comprises at least one of the following: determining the second TA as the first TA; adjusting the TA determined by the terminal based on the second TA, and determining the adjusted TA as the first TA.

[0182] Optionally, the terminal can take the second TA sent by the network device as the TA for performing the target operation, i.e., the network device can directly indicate the TA for the terminal to perform the target operation.

[0183] Optionally, the terminal can receive the second TA sent by the network device, and adjust the TA calculated by the terminal according to the second TA, and determine the adjusted TA as the TA for performing the target operation, i.e., the first TA.

[0184] The TA calculated by the terminal can be obtained according to the configuration information of the network device and the position information of the terminal, or can be obtained according to the ephemeris information broadcast by the network device, or can be obtained according to the timing offset Koffset value broadcast by the network device, or can be obtained according to the target timing parameter broadcast by the network device, etc.

[0185] In step 2105, the terminal sends the first timing advance TA to the network device.

[0186] In some embodiments, when it is determined that the terminal supports the TA reporting function, the terminal can send the first TA to the network device.

[0187] In some embodiments, when the terminal supports the TA reporting function, the terminal can report the first TA, so as to keep consistent with the TA of the network device, e.g., after the terminal reports the first TA, the network device can adjust the TA according to the first TA reported by the terminal.

[0188] In some embodiments, when the terminal supports the TA reporting function, the terminal can trigger the terminal to report the TA based on the configuration information of the base station, or the terminal can autonomously decide whether to report the TA and the timing of reporting.

[0189] In some embodiments, this step is an optional step, which can be omitted when the terminal does not have the TA reporting function; or the step can be omitted when the terminal has the TA reporting capability but does not report the TA.

[0190] The method related to embodiments of the present disclosure can include at least one of steps 2101 to 2105. For example, steps 2101+2102+2104 can be implemented as an independent embodiment, steps 2101+2102+2104+2105 can be implemented as an independent embodiment, steps 2101+2102+2103+2104+2105 can be implemented as an independent embodiment, steps 2101+2102+2103+2104 can be implemented as an independent embodiment, but the present disclosure is not limited thereto.

[0191] In some embodiments, the execution order of step 2103 is not fixed. For example, when the terminal determines the first TA for performing the target operation according to the second TA, step 2103 needs to be performed before step 2104, at this time, the execution order of step 2103 and steps 2101 and 2102 can be exchanged.

[0192] In some embodiments, the execution order of step 2103 is not fixed. For example, when the second TA is obtained by adjusting the first TA reported by the terminal according to the network device, step 2103 can be performed after the above step 2105, that is, the terminal can report the determined first TA to the network device after determining the first TA according to the second TA, and the network device can adjust the received first TA to obtain the second TA.

[0193] In some embodiments, the execution order of steps 2101 and 2102 can be exchanged, or can be performed simultaneously.

[0194] FIG. 3a is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3a, the present disclosure relates to a communication method based on the method, for a terminal, the method comprising:

[0195] Step 3101, receiving configuration information.

[0196] The optional implementation of step 3101 can refer to the optional implementation of step 2101 of FIG. 2 and other associated parts in the embodiments related to FIG. 2, which will not be described here.

[0197] In some embodiments, the terminal receives the configuration information sent by the network device, but the present disclosure is not limited thereto, and the terminal can also receive the configuration information sent by other subjects.

[0198] In some embodiments, the terminal obtains the configuration information specified by the protocol.

[0199] In some embodiments, the terminal obtains the configuration information from the upper layer(s).

[0200] In some embodiments, the terminal processes to obtain the configuration information.

[0201] Step 3102, receiving the first information.

[0202] Optional implementation of step 3102 can refer to optional implementation of step 2102 of FIG. 2 and other associated parts in the embodiments related by FIG. 2, which will not be repeated here.

[0203] In some embodiments, the terminal receives the first information sent by the network device, but is not limited thereto, and can also receive the first information sent by other subjects.

[0204] In some embodiments, the terminal acquires the first information specified by a protocol.

[0205] In some embodiments, the terminal acquires the first information from upper layer(s).

[0206] In some embodiments, the terminal processes to obtain the first information.

[0207] Step 3103, receiving the second TA.

[0208] Optional implementation of step 3103 can refer to optional implementation of step 2103 of FIG. 2 and other associated parts in the embodiments related by FIG. 2, which will not be repeated here.

[0209] In some embodiments, the terminal receives the second TA sent by the network device, but is not limited thereto, and can also receive the second TA sent by other subjects.

[0210] In some embodiments, the terminal acquires the second TA specified by a protocol.

[0211] In some embodiments, the terminal acquires the second TA from upper layer(s).

[0212] In some embodiments, the terminal processes to obtain the second TA.

[0213] Step 3104, the terminal determines the first TA.

[0214] Optional implementation of step 3104 can refer to optional implementation of step 2104 of FIG. 2 and other associated parts in the embodiments related by FIG. 2, which will not be repeated here.

[0215] Step 3105, sending the first TA.

[0216] Optional implementation of step 3105 can refer to optional implementation of step 2105 of FIG. 2 and other associated parts in the embodiments related by FIG. 2, which will not be repeated here.

[0217] In some embodiments, the network device can receive the first TA.

[0218] In some embodiments, the terminal can send the first TA to the network device, but is not limited thereto, and the terminal can also send the first TA to other subjects.

[0219] FIG. 3b is a flow diagram illustrating a method according to an embodiment of the present disclosure. As shown in FIG. 3b, the embodiments of the present disclosure relate to a communication method for a terminal, and the above method comprises:

[0220] Step 3201, receiving configuration information.

[0221] The optional implementation of step 3201 can refer to the optional implementation of step 2101 in FIG. 2, the optional implementation of step 3101 in FIG. 3a, and other associated parts in the embodiments related to FIG. 2 and FIG. 3a, which will not be repeated here.

[0222] Step 3202, receiving first information.

[0223] The optional implementation of step 3202 can refer to the optional implementation of step 2102 in FIG. 2, the optional implementation of step 3102 in FIG. 3a, and other associated parts in the embodiments related to FIG. 2 and FIG. 3a, which will not be repeated here.

[0224] Step 3203, the terminal determines the first TA.

[0225] The optional implementation of step 3203 can refer to the optional implementation of step 2104 in FIG. 2, the optional implementation of step 3104 in FIG. 3a, and other associated parts in the embodiments related to FIG. 2 and FIG. 3a, which will not be repeated here.

[0226] FIG. 3c is a flow diagram illustrating a method according to an embodiment of the present disclosure. As shown in FIG. 3c, the embodiments of the present disclosure relate to a communication method for a terminal, and the above method comprises:

[0227] Step 3301, receiving first information.

[0228] The optional implementation of step 3301 can refer to the optional implementation of step 2102 in FIG. 2, the optional implementation of step 3102 in FIG. 3a, the optional implementation of step 3202 in FIG. 3b, and other associated parts in the embodiments related to FIG. 2, FIG. 3a and FIG. 3b, which will not be repeated here.

[0229] Step 3302, the terminal determines the first TA.

[0230] The optional implementation of step 3302 can refer to the optional implementation of step 2104 in FIG. 2, the optional implementation of step 3104 in FIG. 3a, the optional implementation of step 3203 in FIG. 3b, and other associated parts in the embodiments related to FIG. 2, FIG. 3a and FIG. 3b, which will not be repeated here.

[0231] FIG. 4a is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 4a, the embodiment of the present disclosure relates to a communication method, for a network device, the method comprising:

[0232] Step 4101, sending configuration information.

[0233] The optional implementation of step 4101 can be referred to optional implementation of step 2101 in FIG. 2, step 3101 in FIG. 3a, step 3201 in FIG. 3b, and other associated parts in the embodiments related to FIG. 2, FIG. 3a and FIG. 3b. Here, no longer be repeated.

[0234] In some embodiments, the terminal can receive the configuration information.

[0235] In some embodiments, the network device can send the configuration information to the terminal, but is not limited to this, the network device can also send the configuration information to other subjects.

[0236] Step 4102, sending first information.

[0237] The optional implementation of step 4102 can be referred to optional implementation of step 2102 in FIG. 2, step 3102 in FIG. 3a, step 3202 in FIG. 3b, and other associated parts in the embodiments related to FIG. 2, FIG. 3a and FIG. 3b. Here, no longer be repeated.

[0238] In some embodiments, the terminal can receive the first information.

[0239] In some embodiments, the network device can send the first information to the terminal, but is not limited to this, the network device can also send the first information to other subjects.

[0240] Step 4103, sending second TA.

[0241] The optional implementation of step 4103 can be referred to optional implementation of step 2103 in FIG. 2, and other associated parts in the embodiments related to FIG. 2. Here, no longer be repeated.

[0242] In some embodiments, the terminal can receive the second TA.

[0243] In some embodiments, the network device can send the second TA to the terminal, but is not limited to this, the network device can also send the second TA to other subjects.

[0244] Step 4104, receiving first TA.

[0245] The optional implementation of step 4104 can refer to the optional implementation of step 2105 in FIG. 2, step 3105 in FIG. 3a, step 3204 in FIG. 3b, and other associated parts in the embodiments related to FIG. 2, FIG. 3a, and FIG. 3b, which are not described here again.

[0246] In some embodiments, the network device receives the first TA sent by the terminal, but is not limited thereto, and can also receive the first TA sent by other subjects.

[0247] In some embodiments, the network device obtains the first TA specified by a protocol.

[0248] In some embodiments, the network device processes to obtain the first TA.

[0249] FIG. 4b is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 4b, the embodiment of the present disclosure relates to a communication method, for a terminal, and the above method comprises:

[0250] Step 4201, sending configuration information.

[0251] The optional implementation of step 4201 can refer to the optional implementation of step 2101 in FIG. 2, step 3101 in FIG. 3a, step 3201 in FIG. 3b, and the optional implementation of step 4101 in FIG. 4a, and other associated parts in the embodiments related to FIG. 2, FIG. 3a, FIG. 3b, and FIG. 4a, which are not described here again.

[0252] Step 4202, sending first information.

[0253] The optional implementation of step 4202 can refer to the optional implementation of step 2102 in FIG. 2, step 3102 in FIG. 3a, step 3202 in FIG. 3b, and the optional implementation of step 4102 in FIG. 4a, and other associated parts in the embodiments related to FIG. 2, FIG. 3a, FIG. 3b, and FIG. 4a, which are not described here again.

[0254] FIG. 4c is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 4c, the embodiment of the present disclosure relates to a communication method, for a terminal, and the above method comprises:

[0255] Step 4301, sending first information.

[0256] The optional implementation of step 4301 can refer to the optional implementation of step 2102 in FIG. 2, step 3102 in FIG. 3a, step 3202 in FIG. 3b, step 4102 in FIG. 4a, and the optional implementation of step 4202 in FIG. 4b, and other associated parts in the embodiments related to FIG. 2, FIG. 3a, FIG. 3b, FIG. 4a, and FIG. 4b, which are not described here again.

[0257] FIG. 5 is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 5, the embodiments of the present disclosure relate to a communication method for a communication system comprising a network device, a terminal, the method comprising:

[0258] At step 5101, the network device sends first information to the terminal.

[0259] The optional implementation of step 5101 can refer to the other associated parts in the embodiments related to step 2102 of FIG. 2, step 3102 of FIG. 3a, step 3202 of FIG. 3b, step 4102 of FIG. 4a, step 4202 of FIG. 4b, optional implementation of step 4301 of FIG. 4c, and FIG. 2, FIG. 3a, FIG. 3b, FIG. 4a, FIG. 4b, and FIG. 4c, which will not be repeated here.

[0260] At step 5102, the terminal determines a first timing advance (TA).

[0261] The optional implementation of step 5102 can refer to the other associated parts in the embodiments related to step 2104 of FIG. 2, step 3104 of FIG. 3a, step 3203 of FIG. 3b, optional implementation of step 3302 of FIG. 3c, and FIG. 2, FIG. 3a, FIG. 3b, and FIG. 3c, which will not be repeated here.

[0262] The following is an exemplary introduction to the above method.

[0263] The method according to the embodiments of the present disclosure relates to a method for NTN conflict avoidance, in which the terminal can determine the TA value used by the terminal during data transmission based on pre-defined rules or received base station signaling.

[0264] The method will be explained and described below through specific embodiments.

[0265] Example 1: Pre-defined timing advance value.

[0266] In this way, the terminal determines the TA value used by the terminal to perform the target operation based on pre-defined rules. The target operation can be the operation of counting the number of available slots or invalid symbol positions in the time domain performed by the terminal.

[0267] In one implementation, when the terminal is configured to support TA reporting, the terminal can trigger TA reporting based on the configuration information of the base station or autonomously decide whether to perform TA reporting.

[0268] The terminal determines the last reported TA value.

[0269] The terminal determines the current TA value. The terminal determines the current TA value based on the assistance information configured by the base station and the location information of the terminal.

[0270] The terminal determines that the configuration information received from the base station requires performing a target operation, such as slot counting or invalid symbol determination. The terminal determines the TA value used when performing the target operation based on a predefined rule. For example, the predefined rule can be that the terminal uses the last reported TA value as the TA value used when performing the target operation.

[0271] In another implementation, when the terminal is not configured with the TA reporting function, the terminal receives the configuration information from the base station to determine the timing advance value set by the base station.

[0272] In one implementation, the terminal can determine the set TA value based on the ephemeris information broadcast by the base station.

[0273] In another implementation, the terminal can determine the set TA value based on the cell-specific Koffset value broadcast by the base station.

[0274] The terminal determines the current TA value.

[0275] The terminal determines that the configuration information received from the base station requires performing a target operation, such as slot counting or invalid symbol determination. The terminal determines the TA value used when performing the target operation based on a predefined rule. For example, the predefined rule can be that the terminal determines the timing advance value.

[0276] Example 2: The terminal determines the timing advance value used based on the scheduling indication or the high-layer signaling configuration.

[0277] The terminal determines that the target operation is supported, which can be the available slot counting or invalid symbol determination function. Whether the target operation is supported can be determined by receiving the configuration of the base station.

[0278] The terminal receives the scheduling instruction from the base station to determine the timing advance value used when performing the target operation.

[0279] The terminal determines that the configuration of the available slot counting or invalid symbol determination is enabled. The terminal determines the timing advance value used when performing the target operation based on the TA value notified by the base station.

[0280] To sum up, the above embodiments of the present solution provide a method for solving uplink and downlink transmission collision of an HD-FDD terminal applied to a satellite communication system, which can effectively solve the problem of uplink and downlink collision in the case that the TA information used by the terminal and the TA information of the terminal known by the base station are not matched, and ensure the effectiveness of data transmission.

[0281] The method specifically includes the following: FIG. 6a is a structural schematic diagram of the terminal 101 according to an embodiment of the present solution. As shown in FIG. 6a, the terminal 101 includes a transceiver module 6101 configured to receive first information sent by a network device, the first information being used to indicate that the terminal needs to perform a target operation, the target operation being related to collision in the uplink and downlink transmission process of the terminal. Optionally, the transceiver module is configured to perform at least one of the steps (for example, steps 2101, 2102, 2103, 2105, etc., but not limited to this) related to the transceiving performed by the terminal 101 in any of the above methods, and details are not described herein again.

[0282] In some embodiments, the terminal 101 further includes a processing module 6102 configured to determine a first timing advance TA for performing the target operation. Optionally, the processing module is configured to perform at least one of the steps (for example, step 2104, but not limited to this) related to the processing performed by the terminal 101 in any of the above methods, and details are not described herein again.

[0283] In some embodiments, the transceiver module can be further configured to receive configuration information.

[0284] In some embodiments, the transceiver module can be further configured to receive a second TA.

[0285] In some embodiments, the transceiver module can be further configured to send the first TA.

[0286] FIG. 6b is a structural schematic diagram of the network device 102 according to an embodiment of the present solution. As shown in FIG. 6b, the network device 102 includes a transceiver module 6201 configured to send first information to a terminal, the first information being used to indicate that the terminal needs to perform a target operation, the target operation being related to collision in the uplink and downlink transmission process of the terminal. Optionally, the transceiver module is configured to perform at least one of the steps (for example, steps 2101, 2102, 2103, 2105, etc., but not limited to this) related to the transceiving performed by the network device 102 in any of the above methods, and details are not described herein again.

[0287] In some embodiments, the transceiver module can be further configured to send configuration information.

[0288] In some embodiments, the transceiver module can be further configured to send a second TA.

[0289] In some embodiments, the transceiver module can also be configured to receive the first TA.

[0290] As shown in FIG. 7a, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general processor or a special purpose processor, etc., such as a baseband processor or a central processor. The baseband processor can be configured to process communication protocols and communication data, and the central processor can be configured to control the communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process data of the programs. The processor 7101 is configured to invoke instructions to cause the communication device 7100 to perform any of the above methods.

[0291] In some embodiments, the communication device 7100 also includes one or more memories 7102 configured to store instructions. Optionally, all or part of the memory 7102 can also be outside the communication device 7100.

[0292] In some embodiments, the communication device 7100 also includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the communication steps in the above methods, such as transmitting and receiving, are performed by the transceiver 7103, and the other steps are performed by the processor 7101.

[0293] In some embodiments, the transceiver can include a receiver and a transmitter, which can be separate or integrated together. Optionally, the terms transceiver, transceiving unit, transceiver, transceiving circuit, etc. can be replaced by each other, the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be replaced by each other, and the terms receiver, receiving unit, receiver, receiving circuit, etc. can be replaced by each other.

[0294] Optionally, the communication device 7100 also includes one or more interface circuits 7104 connected to the memory 7102. The interface circuit 7104 can be configured to receive signals from the memory 7102 or other devices, and can be configured to send signals to the memory 7102 or other devices. For example, the interface circuit 7104 can read instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0295] The communication device 7100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 can not be limited by FIG. 7a. The communication device can be a standalone device or can be part of a larger device. For example, the communication device can be: 1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally also include storage components for storing data, programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, and the like; (6) other devices, and the like.

[0296] FIG. 7b is a structural schematic diagram of a chip 7200 according to an embodiment of the present disclosure. For the case where the communication device 7100 is a chip or a chip system, the structural schematic diagram of the chip 7200 shown in FIG. 7b can be referred to, but is not limited thereto.

[0297] The chip 7200 includes one or more processors 7201 for invoking instructions to cause the chip 7200 to perform any of the above methods.

[0298] In some embodiments, the chip 7200 further includes one or more interface circuits 7202 connected with the memory 7203, which can be used to receive signals from the memory 7203 or other devices, and can be used to send signals to the memory 7203 or other devices. For example, the interface circuit 7202 can read instructions stored in the memory 7203 and send the instructions to the processor 7201. Alternatively, the terms interface circuit, interface, transceiver pin, and transceiver can be replaced with each other.

[0299] In some embodiments, the chip 7200 further includes one or more memories 7203 for storing instructions. Alternatively, all or part of the memory 7203 can be outside the chip 7200.

[0300] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 7100, causes the communication device 7100 to perform any of the above methods. Alternatively, the storage medium is an electronic storage medium. Alternatively, the storage medium is a computer-readable storage medium, but is not limited thereto, and can also be a storage medium readable by other devices. Alternatively, the storage medium can be a non-transitory storage medium, but is not limited thereto, and can also be a transitory storage medium.

[0301] The disclosure also provides a program product which, when executed by the communication device 7100, causes the communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0302] The disclosure also provides a computer program which, when executed on a computer, causes the computer to perform any of the above methods.

[0303] In the above embodiments, all or some of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or some of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer programs are loaded on a computer and executed, all or some of the processes or functions according to the embodiments of the disclosure are generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer programs can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer programs can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) manner. The computer readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media sets. The available media can be a magnetic medium (for example, floppy disk, hard disk, magnetic tape), an optical medium (for example, high-density digital video disc (DVD)), or a semiconductor medium (for example, solid state disk (SSD)), etc.

[0304] The correspondence relationship shown in each table in the present disclosure can be configured or predefined. The values of the information in each table are merely examples, and other values can be configured, and the present disclosure does not limit. When configuring the correspondence relationship between the information and each parameter, it is not necessarily required to configure all the correspondence relationships shown in each table. For example, the correspondence relationship shown in some rows in the table in the present disclosure can also not be configured. For another example, the above tables can be appropriately deformed, for example, split, merged, and the like. The names of the parameters shown in the titles of the above tables can also use other names understandable by the communication device, and the values or representations of the parameters can also use other values or representations understandable by the communication device. The above tables can also use other data structures when implemented, for example, arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or the like.

[0305] The predefinition in the present disclosure can be understood as defining, predefining, storing, pre-storing, pre-negotiating, pre-configuring, solidifying, or pre-burning.

[0306] Those skilled in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present disclosure.

[0307] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0308] The above is merely a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A communication method, characterized in that, The method is executed by a terminal, and the method includes: The terminal receives first information sent by a network device, the first information being used to instruct the terminal to perform a target operation, the target operation being related to a conflict during the uplink and downlink transmission process; Determine the first timing advance (TA) for performing the target operation.

2. The method according to claim 1, characterized in that, The collisions between the terminal during uplink and downlink transmission include at least one of the following: Collision between dynamic scheduling transmission and semi-static pre-configured transmission on the same time unit; Collisions between dynamically scheduled transmit / receive and dynamically scheduled receive / transmit within the same time unit; Collisions between semi-static pre-configured transmit / receive and semi-static pre-configured receive / transmit within the same time unit; Collisions between Synchronous Broadcast Block (SSB) and uplink transmissions in the same time unit, wherein the uplink transmissions include at least one of semi-static pre-configured uplink transmissions and dynamically scheduled uplink transmissions; The collision between a valid random access opportunity (RO) or Msg.A PUSCH and a downlink reception in the same time unit, wherein the downlink reception includes at least one of semi-static pre-configured downlink reception and dynamically scheduled downlink reception.

3. The method according to claim 1 or 2, characterized in that, The target operation includes at least one of the following: The first operation is used to determine the available time units in dynamic scheduling and / or semi-static scheduling; The second operation is used to determine the location of unavailable time-domain symbols; The third operation is used to determine the time unit information for uplink transmission or downlink reception.

4. The method according to any one of claims 1 to 3, characterized in that, The determination of the first timing advance (TA) for performing the target operation includes: The first TA is determined based on predefined rules.

5. The method according to claim 4, characterized in that, The determination of the first TA based on predefined rules includes at least one of the following: The TA last reported by the terminal to the network device is determined as the first TA; The TA of the terminal is determined based on the configuration information sent by the network device and the location information of the terminal, and is identified as the first TA; The TA determined based on the ephemeris information broadcast by the network device is designated as the first TA; The TA determined based on the timing offset Koffset value broadcast by the network device is determined as the first TA; The timing parameter (TA) determined based on the target timing parameters broadcast by the network device is designated as the first TA.

6. The method according to any one of claims 1 to 5, characterized in that, The determination of the first timing advance (TA) for performing the target operation includes: Receive the second TA sent by the network device via scheduling instructions or higher-layer signaling; The first TA is determined based on the second TA.

7. The method according to claim 6, characterized in that, The second TA sent by the network device determines that the first TA includes at least one of the following: The second TA is determined to be the first TA; Based on the second TA, the TA determined by the terminal is adjusted, and the adjusted TA is determined as the first TA.

8. The method according to any one of claims 1 to 7, characterized in that, The method further includes: It is confirmed that the terminal supports the TA reporting function; Send the first TA to the network device.

9. The method according to any one of claims 6 to 8, characterized in that, The second TA is the TA determined by the network device, or the TA obtained by the network device after adjusting it according to the TA reported by the terminal.

10. A communication method, characterized in that, The method is performed by a network device, and the method includes: Send a first message to the terminal, the first message being used to instruct the terminal to perform a target operation, the target operation being related to a conflict in the uplink and downlink transmission process of the terminal.

11. The method according to claim 10, characterized in that, The collisions between the terminal during uplink and downlink transmission include at least one of the following: Collision between dynamic scheduling transmission and semi-static pre-configured transmission on the same time unit; Collisions between dynamically scheduled transmit / receive and dynamically scheduled receive / transmit within the same time unit; Collisions between semi-static pre-configured transmit / receive and semi-static pre-configured receive / transmit within the same time unit; Collisions between Synchronous Broadcast Block (SSB) and uplink transmissions in the same time unit, wherein the uplink transmissions include at least one of semi-static pre-configured uplink transmissions and dynamically scheduled uplink transmissions; The collision between a valid random access opportunity (RO) or Msg.A PUSCH and a downlink reception in the same time unit, wherein the downlink reception includes at least one of semi-static pre-configured downlink reception and dynamically scheduled downlink reception.

12. The method according to claim 10 or 11, characterized in that, The target operation includes at least one of the following: The first operation is used to determine the available time units in dynamic scheduling and / or semi-static scheduling; The second operation is used to determine the location of unavailable time-domain symbols; The third operation is used to determine the time unit information for uplink transmission or downlink reception.

13. The method according to any one of claims 10 to 12, characterized in that, The method further includes at least one of the following: The terminal sends configuration information, which is used by the terminal to determine the first TA to perform the target operation; Broadcast ephemeris information, which is used by the terminal to determine the first TA to perform the target operation; The broadcast timing offset Koffset value is used by the terminal to determine the first TA for performing the target operation; Broadcast target timing parameters, which are used by the terminal to determine the first timing action (TA) for performing the target operation; A second TA is sent to the terminal via a scheduling instruction or higher-level signaling. The second TA is used by the terminal to determine the first TA to perform the target operation.

14. The method according to claim 13, characterized in that, The second TA is the TA determined by the network device, or the TA obtained by the network device after adjusting it according to the TA reported by the terminal.

15. The method according to any one of claims 10 to 14, characterized in that, The method further includes: The terminal receives a first TA (Transaction Transfer) sent by the terminal to execute the target operation, and the terminal supports TA reporting functionality.

16. A terminal, characterized in that, include: The transceiver module is used to receive first information sent by the network device. The first information is used to instruct the terminal to perform a target operation, which is related to the conflict of the terminal in the uplink and downlink transmission process. The processing module is used to determine the first timing advance (TA) for performing the target operation.

17. A network device, characterized in that, include: The transceiver module is used to send first information to the terminal, the first information being used to instruct the terminal to perform a target operation, the target operation being related to a conflict in the uplink and downlink transmission process of the terminal.

18. A communication system, characterized in that, include: A terminal for performing the method as described in any one of claims 1 to 9; A network device for performing the method as described in any one of claims 10 to 15.

19. The method according to claim 18, characterized in that, The terminal is a Redcap terminal with reduced capability that supports half-duplex frequency division multiplexing (HD-FDD), and / or the network device is a network device used for non-terrestrial networks.

20. A communication device, wherein, include: transceiver; Memory; The processor, connected to both the transceiver and the memory, is configured to control the wireless signal transmission and reception of the transceiver by executing computer-executable instructions on the memory, and to implement the method of any one of claims 1-15.

21. A computer storage medium, wherein, The computer storage medium stores computer-executable instructions; when executed by a processor, the computer-executable instructions can implement the method of any one of claims 1-15.

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