Communication method, terminal, network device, system, and storage medium

Abstract

The present disclosure relates to a communication method, a terminal, a network device, a system, and a storage medium. The method comprises: on the basis of received downlink control information (DCI), a terminal determining a first timing offset parameter for hybrid automatic repeat request (HARQ) information; before feeding back the HARQ information on the basis of the first timing offset parameter, receiving MAC control information sent by a network device, wherein the MAC control information is used to indicate a second timing offset parameter; and on the basis of the first timing offset parameter and / or the second timing offset parameter, determining a transmission scheme of the HARQ information. Thus, when the timing offset parameter is updated, a HARQ feedback resource and a HARQ codebook of the terminal are designed to ensure the consistency of HARQ feedback information, thereby ensuring the reliability of data transmission.

Description

Communication method, terminal, network device, system and storage medium Technical Field

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

[0002] In the research of wireless communication technology, satellite communication is considered a key aspect of future wireless communication technology development. Satellite communication refers to communications conducted by ground-based radio communication equipment using satellites as relays. Satellite communication systems consist of satellite and ground components. Satellite communication has at least the following characteristics: a wide communication range, enabling communication between any two points within the range of the satellite's radio waves; high reliability, and immunity to land disasters and other terrain factors.

[0003] Summary of the Invention

[0004] In order to overcome the technical problem in the related art that the disorder of timing deviation parameters leads to reduced data transmission reliability, the present disclosure provides a communication method, terminal, network device, system and storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is provided, the method comprising:

[0006] The terminal determines, according to the received downlink control information DCI, a first timing offset parameter of hybrid automatic repeat request HARQ information;

[0007] Before feeding back the HARQ information based on the first timing offset parameter, receiving MAC control information, where the MAC control information is used to indicate a second timing offset parameter;

[0008] A transmission mode of the HARQ information is determined according to the first timing offset parameter and / or the second timing offset parameter.

[0009] According to a second aspect of an embodiment of the present disclosure, a communication method is provided, the method comprising:

[0010] The network device sends a DCI to the terminal, where the DCI is used to instruct the terminal to determine a first timing offset parameter of HARQ information according to the DCI;

[0011] The network device sends MAC control information to the terminal, where the MAC control information is used to indicate a second timing deviation parameter.

[0012] According to a third aspect of an embodiment of the present disclosure, a terminal is provided, including:

[0013] A processing module is configured to determine a first timing offset parameter of hybrid automatic repeat request HARQ information according to received downlink control information DCI;

[0014] a transceiver module, configured to receive MAC control information before feeding back the HARQ information based on the first timing offset parameter, the MAC control information being used to indicate a second timing offset parameter;

[0015] An execution module is configured to determine a transmission mode of the HARQ information according to the first timing offset parameter and / or the second timing offset parameter.

[0016] According to a fourth aspect of an embodiment of the present disclosure, a network device is provided, including:

[0017] A first transceiver module is configured to send a DCI to a terminal, where the DCI is used to instruct the terminal to determine a first timing offset parameter of HARQ information according to the DCI;

[0018] The second transceiver module is configured to send MAC control information to the terminal, where the MAC control information is used to indicate a second timing deviation parameter.

[0019] According to a fifth aspect of an embodiment of the present disclosure, a terminal is provided, including:

[0020] one or more processors;

[0021] The terminal is used to execute the communication method described in any one of the first aspects of this disclosure.

[0022] According to a sixth aspect of an embodiment of the present disclosure, a network device is provided, including:

[0023] one or more processors;

[0024] The network device is used to execute the communication method described in any one of the second aspects of this disclosure.

[0025] According to the seventh aspect of an embodiment of the present disclosure, a communication system is provided, comprising a terminal and a network device, wherein the terminal is configured to implement the communication method described in any one of the first aspects of the present disclosure, and the network device is configured to implement the communication method described in any one of the second aspects of the present disclosure.

[0026] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is provided, which stores instructions. When the instructions are executed on a communication device, the communication device executes the communication method as described in any one of the first aspect and the second aspect of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0028] FIG1a is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0029] FIG1 b is a schematic diagram showing a satellite communication scenario according to an embodiment of the present disclosure.

[0030] FIG1c is a schematic diagram showing network-side uplink and downlink timing alignment according to an embodiment of the present disclosure.

[0031] FIG1d is a schematic diagram showing misalignment of uplink and downlink timing on the network side according to an embodiment of the present disclosure.

[0032] FIG1e is a schematic diagram showing Koffset update according to an embodiment of the present disclosure.

[0033] FIG2 a is an interactive schematic diagram illustrating a communication method according to an embodiment of the present disclosure.

[0034] FIG2 b is a schematic diagram showing a HARQ information transmission method according to an embodiment of the present disclosure.

[0035] FIG2c is a schematic diagram showing a HARQ information transmission method according to an embodiment of the present disclosure.

[0036] FIG2 d is a schematic diagram showing a HARQ information transmission method according to an embodiment of the present disclosure.

[0037] FIG2e is a schematic diagram showing a HARQ information transmission method according to an embodiment of the present disclosure.

[0038] FIG3 is a flowchart showing a communication method according to an embodiment of the present disclosure.

[0039] FIG4 is a flowchart showing a communication method according to an embodiment of the present disclosure.

[0040] FIG5 is a flowchart showing a communication method according to an embodiment of the present disclosure.

[0041] FIG6 is a schematic structural diagram of a terminal proposed in an embodiment of the present disclosure.

[0042] FIG7 is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure.

[0043] FIG8 is a schematic structural diagram of a network device 8100 proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0044] The embodiments of the present disclosure provide a communication method, a terminal, a network device, a system, and a storage medium.

[0045] In a first aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

[0046] The terminal determines, according to the received downlink control information DCI, a first timing offset parameter of hybrid automatic repeat request HARQ information;

[0047] Before feeding back the HARQ information based on the first timing offset parameter, receiving MAC control information, where the MAC control information is used to indicate a second timing offset parameter;

[0048] A transmission mode of the HARQ information is determined according to the first timing offset parameter and / or the second timing offset parameter.

[0049] In the above technical solution, a terminal determines a first timing offset parameter for hybrid automatic repeat request (HARQ) information based on received downlink control information (DCI). Before feeding back the HARQ information based on the first timing offset parameter, the terminal receives MAC control information indicating a second timing offset parameter. The MAC control information then determines the transmission method for the HARQ information based on the first and / or second timing offset parameters. Consequently, when the timing offset parameter is updated, the terminal's HARQ feedback resources and HARQ codebook are designed to ensure consistent HARQ feedback information and reliable data transmission.

[0050] The MAC control information may refer to a media access control layer control element, namely, MAC-CE.

[0051] In conjunction with some embodiments of the first aspect, in some embodiments, determining the transmission mode of the HARQ information according to the first timing offset parameter and / or the second timing offset parameter includes:

[0052] Determining a first time domain position of a HARQ resource according to the first timing offset parameter, and determining a second time domain position of the HARQ resource according to the second timing offset parameter;

[0053] Determine that the first time domain position is inconsistent with the second time domain position, and abandon the transmission of the HARQ information on the HARQ resource.

[0054] In conjunction with some embodiments of the first aspect, in some embodiments, determining the transmission mode of the HARQ information according to the first timing offset parameter and / or the second timing offset parameter includes:

[0055] determining a first HARQ resource according to the first timing offset parameter;

[0056] The HARQ information is transmitted based on the first HARQ resource.

[0057] With reference to some embodiments of the first aspect, in some embodiments, transmitting the HARQ information based on the first HARQ resource includes:

[0058] Determining a first HARQ information bit and a first feedback window based on the first HARQ resource;

[0059] The HARQ information is transmitted based on the first feedback window, wherein the HARQ information includes the first HARQ information bit.

[0060] In conjunction with some embodiments of the first aspect, in some embodiments, determining the transmission mode of the HARQ information according to the first timing offset parameter and / or the second timing offset parameter includes:

[0061] determining a second HARQ resource according to the second timing offset parameter;

[0062] The HARQ information is transmitted based on the second HARQ resource.

[0063] With reference to some embodiments of the first aspect, in some embodiments, transmitting the HARQ information based on the second HARQ resource includes:

[0064] determining, according to the second HARQ resource, a second HARQ information bit and a second feedback window;

[0065] The HARQ information is transmitted based on the second feedback window, wherein the HARQ information includes the second HARQ information bits.

[0066] In conjunction with some embodiments of the first aspect, in some embodiments, determining the transmission mode of the HARQ information according to the first timing offset parameter and / or the second timing offset parameter includes:

[0067] Determining a first HARQ resource and first HARQ information according to the first timing offset parameter, and determining a second HARQ resource and second HARQ information according to the second timing offset parameter;

[0068] The first HARQ information is transmitted based on the first HARQ resource, and the second HARQ information is transmitted based on the second HARQ resource.

[0069] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0070] The terminal determines to receive a first physical downlink control channel PDCCH of the DCI;

[0071] Obtaining a first transmission time slot of tail information in the first PDCCH;

[0072] A first effective time of the first timing offset parameter is determined according to the first transmission time slot.

[0073] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0074] Determining a physical uplink control channel PUCCH according to the second timing offset parameter;

[0075] Obtaining a second transmission time slot of the PUCCH;

[0076] Determining, according to the second transmission time slot, subcarrier spacing (SCS) configuration information for the PUCCH transmission;

[0077] Determine a second effective time of the second timing deviation parameter based on the SCS configuration information and the second transmission time slot.

[0078] In a second aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

[0079] The network device sends a DCI to the terminal, where the DCI is used to instruct the terminal to determine a first timing offset parameter of HARQ information according to the DCI;

[0080] The network device sends MAC control information to the terminal, where the MAC control information is used to indicate a second timing deviation parameter.

[0081] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0082] Receive HARQ information, where the HARQ information is transmitted by the terminal based on a first HARQ resource, and the first HARQ resource is determined by the terminal according to the first timing offset parameter.

[0083] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0084] Receive HARQ information, where the HARQ information is transmitted by the terminal based on a second HARQ resource, and the second HARQ resource is determined by the terminal according to the second timing offset parameter.

[0085] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0086] Receive first HARQ information and second HARQ information, where the first HARQ information is transmitted by the terminal based on a first HARQ resource, and the first HARQ resource is determined by the terminal according to the first timing deviation parameter; and the second HARQ information is transmitted by the terminal based on a second HARQ resource, and the second HARQ resource is determined by the terminal according to the second timing deviation parameter.

[0087] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0088] Receive first uplink information fed back by the terminal according to the DCI and second uplink information fed back by the terminal according to the MAC control information, wherein neither the first uplink information nor the second uplink information includes HARQ information.

[0089] In a third aspect, an embodiment of the present disclosure provides a terminal, including:

[0090] A processing module is configured to determine a first timing offset parameter of hybrid automatic repeat request HARQ information according to received downlink control information DCI;

[0091] a transceiver module, configured to receive MAC control information before feeding back the HARQ information based on the first timing offset parameter, the MAC control information being used to indicate a second timing offset parameter;

[0092] An execution module is configured to determine a transmission mode of the HARQ information according to the first timing offset parameter and / or the second timing offset parameter.

[0093] In a fourth aspect, an embodiment of the present disclosure provides a network device, including:

[0094] A first transceiver module is configured to send a DCI to a terminal, where the DCI is used to instruct the terminal to determine a first timing offset parameter of HARQ information according to the DCI;

[0095] The second transceiver module is configured to send MAC control information to the terminal, where the MAC control information is used to indicate a second timing deviation parameter.

[0096] In a fifth aspect, an embodiment of the present disclosure provides a terminal, including:

[0097] one or more processors;

[0098] The terminal is used to execute the communication method described in any one of the first aspects of the embodiments of this disclosure.

[0099] In a sixth aspect, an embodiment of the present disclosure provides a network device, including:

[0100] one or more processors;

[0101] The network device is used to execute the communication method described in any one of the second aspects of the embodiments of this disclosure.

[0102] In the seventh aspect, an embodiment of the present disclosure provides a communication system, comprising a terminal and a network device, wherein the terminal is configured to implement the communication method described in any one of the first aspects of the present disclosure, and the network device is configured to implement the communication method described in any one of the second aspects of the present disclosure.

[0103] In an eighth aspect, an embodiment of the present disclosure provides a storage medium storing instructions, which, when executed on a communication device, enables the communication device to execute a communication method as described in any one of the first and second aspects of the present disclosure.

[0104] It is understandable that the above-mentioned terminals, network devices, communication systems, and storage media are all used to execute the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods and will not be repeated here.

[0105] The present disclosure provides a communication method, terminal, network device, system, and storage medium. In some embodiments, the terms communication method and information processing method are interchangeable, the terms communication device and information processing device are interchangeable, and the terms information processing system and communication system are interchangeable.

[0106] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0107] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0108] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0109] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0110] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0111] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0112] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0113] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0114] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0115] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0116] In some embodiments, terms such as "time / frequency" and "time / frequency domain" refer to the time domain and / or the frequency domain.

[0117] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0118] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0119] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0120] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0121] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0122] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0123] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0124] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0125] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0126] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0127] FIG1 a is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1 a , a communication system 100 includes a terminal 101 and a network device 102 .

[0128] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, 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 a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0129] In some embodiments, the network device 102 is, for example, a node or device that accesses the terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (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 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0130] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0131] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0132] The following embodiments of the present disclosure may be applied to the communication system 100 shown in Figure 1 , or a portion thereof, but are not limited thereto. The entities shown in Figure 1a are illustrative only. The communication system may include all or a portion of the entities shown in Figure 1 , or may include entities other than those shown in Figure 1 . The number and form of the entities are arbitrary, and each entity may be physical or virtual. The connections between the entities are illustrative only. The entities may be connected or disconnected, and the connections may be in any manner, including direct or indirect, wired or wireless.

[0133] The 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 (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0134] In some implementations, the continuous emergence of new internet applications such as AR (Augmented Reality) / VR (Virtual Reality) and vehicle-to-vehicle communications has placed higher demands on wireless communication technology, driving the continuous evolution of wireless communication technology to meet these application needs. Currently, cellular mobile communication technology is in the process of evolving into a new generation of technology. A key feature of this new generation of technology is the flexible configuration support for multiple service types. Different service types have different requirements for wireless communication technology. For example, eMBB (Enhanced Mobile Broadband) service types primarily require high bandwidth and high speed; URLLC (Ultra-Reliable Low-Latency Communications) service types primarily require high reliability and low latency; and mMTC (Massive Machine-Type Communication) service types primarily require a large number of connections. Therefore, the next generation of wireless communication systems requires flexible and configurable designs to support the transmission of multiple service types.

[0135] FIG1 b is a schematic diagram of a satellite communication scenario according to an embodiment of the present disclosure. As shown in FIG1 b , the satellite communication scenario includes a UE, a communication satellite, and a ground station (including a base station).

[0136] In some implementations, the data network sends communication information to a ground station, which then transmits the information to a communications satellite via a feeder link. The communications satellite then transmits the information to the UE via a service link. The UE then sends uplink information to the communications satellite via a service link, which in turn transmits the uplink information to the ground station via a feeder link. In this satellite communication scenario, the communications satellite acts as a relay, transmitting communication information to the UE and the ground station, thereby enabling uplink and downlink communication between the UE and the ground station.

[0137] In some implementations, satellite communication systems and terrestrial cellular communication systems will gradually achieve deep integration within wireless communication systems, truly realizing the intelligent interconnection of all things. As a supplement to current terrestrial cellular communication systems, satellite communication can have the following benefits:

[0138] (1) Extended coverage: For areas where cellular communication systems cannot cover or where coverage costs are high, such as oceans, deserts, and remote mountainous areas, satellite communication can be used to solve communication problems.

[0139] (2) Emergency communications: In extreme situations such as disasters such as earthquakes, when cellular communication infrastructure is unavailable, satellite communications can be used to quickly establish communication connections.

[0140] (3) Providing industry applications: For example, for delay-sensitive services with long-distance transmission, satellite communications can be used to reduce the delay of service transmission.

[0141] In some embodiments, in a satellite communication system, the timing of uplink and downlink transmissions may have large deviations due to the large propagation distance. The terminal needs to maintain uplink synchronization based on GNSS (Global Navigation Satellite System) measurements and some auxiliary information. In the satellite communication scenario, due to the long signal transmission distance between the transmitter and the receiver, data communication transmission requires a long transmission time. For transmissions with an uplink and downlink relationship, a delay parameter is introduced to compensate for the transmission delay. In order to determine the delay parameter, the terminal needs to report its location information, so that the network device can assign the delay parameter to the terminal based on the location information reported by the terminal.

[0142] Figure 1c is a schematic diagram illustrating network-side uplink and downlink timing alignment according to an embodiment of the present disclosure. As shown in Figure 1c, this embodiment is applied in a satellite communication scenario. The gNB (next generation Node B) configures a timing advance (TA) for the UE based on the location information reported by the UE. The UE sends UE-UL (uplink) information to the gNB in ​​advance of the TA. The gNB receives the UE-UL information after a delay. The gNB then sends communication information n to the UE via the downlink (DL). Due to the long communication distance between the network and the UE, the UE receives the communication information n after a delay. During this communication interaction, the TA ensures timing alignment of the uplink and downlink signals on the gNB, thereby achieving reliable data transmission and communication efficiency.

[0143] In some implementations, the network can align timing with the UE by sending a downlink synchronization signal. After receiving the downlink synchronization signal, the UE can adjust its transmission timing based on the timing information contained in the signal so that the uplink signal reaches the network within the correct time window.

[0144] Figure 1d is a schematic diagram of network-side uplink and downlink timing misalignment according to an embodiment of the present disclosure. As shown in Figure 1d, this embodiment is applied to a satellite communication scenario, and the TA extension is relatively short, resulting in a deviation in the transmission timing of gNB UL information and gNB DL information on the network side, causing uplink and downlink timing misalignment on the network side.

[0145] In some embodiments, for a large propagation delay from the terminal to the uplink synchronization point, current technology can adjust the timing relationship of uplink and downlink communications by configuring cell-specific (cell-specific)-Koffset (time slot synchronization parameter) and / or UE-specific (terminal-specific)-Koffset (time slot synchronization parameter). The terminal may receive a MAC CE (MAC CE is a way to exchange control information between the UE and the network in addition to the RRC message and the NAS message. The information exchanged is control information about the MAC layer) to update the configured Koffset value. At this time, there are two types of Koffset in the terminal. For the HARQ (Hybrid Automatic Repeat-reQuest) codebook, it is necessary to clearly use which timing adjustment parameter to determine the HARQ codebook in the terminal and the base station, otherwise the HARQ codebook in the terminal will be confused.

[0146] Figure 1e is a schematic diagram of Koffset update according to an embodiment of the present disclosure. As shown in Figure 1e, the terminal receives DL DCI (downlink control information) sent by the base station. The DL DCI is used to receive downlink data transmission. When receiving the DL DCI, the terminal uses the old Koffset value to determine the position of the HARQ feedback. However, after receiving the DL DCI and based on the HARQ resources determined by the DL DCI, before feeding back the HARQ information according to the HARQ resources, the terminal receives a new Koffset value notified by the MAC CE (MAC layer control information). At this time, when determining the HARQ feedback resources and determining the HARQ feedback codebook, the terminal cannot determine whether to use the previously configured Koffset value or the updated Koffset value, resulting in confusion in the generation of the HARQ codebook in the terminal, resulting in a reduced possibility of data transmission.

[0147] In some embodiments, a method for designing HARQ feedback resources and HARQ codebooks for a terminal is proposed when a timing offset parameter is updated in a satellite communication scenario, so that the base station and the terminal have a consistent understanding of the HARQ feedback information and ensure the reliability of data transmission.

[0148] FIG2a is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2a, the present disclosure embodiment relates to a communication method, which is performed by a terminal 101 and a network device 102, and the method includes:

[0149] Step S2101 , the network device 102 sends DCI to the terminal 101 .

[0150] For example, in this embodiment, DCI is control information related to the physical uplink and downlink shared channel transmitted by the PDCCH (Physical Downlink Control Channel) channel. The DCI may include RB (Radio Bearer) resource allocation information, modulation method MCS (Modulation and Coding Scheme) information, HARQ-ID information, etc. The terminal decodes the DCI in the correct decoding method to obtain PDSCH (Physical Downlink Shared Channel) data or PUSCH (Physical Uplink Shared Channel) data.

[0151] In some implementations, the DCI is used to instruct the terminal 101 to determine a first timing offset parameter of the HARQ information according to the DCI.

[0152] For example, in this embodiment, after the network device 102 receives the location information reported by the terminal 101, it allocates a first timing deviation parameter to the terminal 101 in the DCI based on the location information, wherein the first timing deviation parameter is Koffset-1, and the HARQ feedback resource position for transmitting HARQ information is determined by the first timing deviation parameter.

[0153] In step S2102, the terminal 101 determines a first timing offset parameter of the HARQ information according to the received DCI.

[0154] For example, in this embodiment, the terminal 101 determines a first timing offset parameter Koffset-1 based on the DCI sent by the network device 102, wherein the first timing offset parameter is used to determine the HARQ feedback resource position when performing HARQ feedback in the terminal, so as to use the HARQ codebook when feeding back the HARQ information.

[0155] In step S2103 , the network device 102 sends MAC control information to the terminal 101 .

[0156] In some implementations, the MAC control information is used to indicate a second timing offset parameter.

[0157] For example, in this embodiment, MAC control information is control information of the MAC (Media Access Control) layer. MAC CE is a means for exchanging control information between a terminal and a network device, and the MAC layer in the terminal is controlled via the MAC CE. In this embodiment, the MAC control information sent by network device 102 is used to indicate a second timing offset parameter to terminal 101. This second timing offset parameter is used to update a Koffset value historically configured in terminal 101. After receiving the MAC CE, terminal 101 determines the time domain position and / or frequency domain position of the HARQ resource based on the updated Koffset value.

[0158] In step S2104, the terminal 101 receives MAC control information before feeding back HARQ information based on the first timing offset parameter.

[0159] In some implementations, the MAC control information is used to indicate the second timing offset parameter.

[0160] For example, after determining the first timing offset parameter based on the above method, terminal 101 determines HARQ resources and HARQ codebook information for feedback HARQ information based on the first timing offset parameter. Before feedback of HARQ information based on the first timing offset parameter, terminal 101 receives a second timing offset parameter sent by network device 102. This second timing offset parameter can be used to determine additional HARQ resources and HARQ codebook information for feedback of HARQ information. As a result, terminal 101 cannot determine which HARQ resource and HARQ codebook should be used for HARQ information feedback at this time. This results in inconsistency between network device 102 and terminal 101 regarding HARQ resources and HARQ codebooks in the same time domain, thereby reducing data transmission reliability during communication interaction. Therefore, it is necessary to configure the HARQ information transmission method in the current scenario to ensure the consistency of HARQ information between terminal 101 and network device 102.

[0161] In step S2105, the terminal 101 determines a transmission method of the HARQ information according to the first timing offset parameter and / or the second timing offset parameter.

[0162] For example, at this time, there are two timing deviation parameters in the terminal 101, which can correspondingly determine two HARQ transmission resource positions and two HARQ codebook information. In this embodiment, the transmission method of the HARQ information is determined according to the first timing deviation parameter and / or the second timing deviation parameter, wherein the transmission method includes the HARQ feedback resource of the HARQ information and the HARQ codebook information.

[0163] In some embodiments, the transmission method of the HARQ information is determined based on the first timing deviation parameter and the second timing deviation. For example, the first time domain position and the second time domain position of the HARQ resource of the terminal UL when feeding back the HARQ information are respectively determined based on the first timing deviation parameter and the second timing deviation parameter. When the first time domain position and the second time domain position are inconsistent, the transmission of the HARQ information on the HARQ resource is abandoned during the terminal UL process.

[0164] In some embodiments, the transmission mode of the HARQ information is determined based on the first timing deviation parameter. For example, the HARQ feedback resources and HARQ codebook information of the HARQ information are determined based on the first timing deviation parameter determined by the DCI. That is, when there are two timing deviation parameters in the terminal 101, the first timing deviation parameter determined by the DCI is used as the timing deviation parameter for feedback of the HARQ information, and the HARQ information feedback is performed based on the feedback resources and codebook information determined by the first deviation parameter.

[0165] In some implementations, the HARQ information transmission method is determined based on the second timing offset parameter. In this case, the HARQ information transmission method based on the second timing offset parameter can refer to the above embodiment and will not be repeated here.

[0166] In some embodiments, the transmission method of the HARQ information is determined based on the first timing deviation parameter and the second timing deviation parameter. For example, in this embodiment, the HARQ resources and HARQ codebooks determined based on the two timing deviation parameters are used to perform HARQ feedback respectively. At this time, the network device 102 determines which HARQ information to use as the HARQ information matching the terminal 101 in the current scenario.

[0167] FIG2 b is a schematic diagram illustrating a HARQ information transmission method according to an embodiment of the present disclosure. As shown in FIG2 b , in some implementations, the above step S2105 includes:

[0168] A first time domain position of the HARQ resource is determined according to the first timing offset parameter, and a second time domain position of the HARQ resource is determined according to the second timing offset parameter.

[0169] It is determined that the first time domain position is inconsistent with the second time domain position, and transmission of the HARQ information on the HARQ resource is abandoned.

[0170] For example, in this embodiment, based on the first timing offset parameter Koffset-1 and the second timing offset parameter Koffset-2 obtained in the above steps, the first time domain position and the second time domain position of the HARQ resource in the terminal UL are determined in the time domain unit, and the first time domain position and the second time domain position are compared in the time domain space. If the first time domain position and the second time domain position are inconsistent, the transmission of HARQ information on the HARQ resource is abandoned during the terminal UL process. That is, in the process of updating the timing offset parameter based on MAC control information, if the position of the HARQ resource indicated by the timing offset parameter in the time domain unit is inconsistent, the feedback of the HARQ information is abandoned.

[0171] FIG2c is a schematic diagram illustrating a HARQ information transmission method according to an embodiment of the present disclosure. As shown in FIG2c , in some implementations, the above step S2105 includes the following steps:

[0172] Determining a first HARQ resource according to the first timing offset parameter;

[0173] HARQ information is transmitted based on the first HARQ resource.

[0174] For example, in this embodiment, the terminal uses Koffset-1 used by the time domain unit where the DCI is located to determine the HARQ feedback resources and HARQ codebook of the HARQ information. At this time, HARQ information feedback is performed based on the HARQ feedback resources and HARQ codebook determined by Koffset-1, and HARQ information transmission based on Koffset-2 is abandoned.

[0175] Optionally, in one implementation, the step of transmitting HARQ information based on the first HARQ resource includes:

[0176] Determining a first HARQ information bit and a first feedback window based on the first HARQ resource;

[0177] Based on the first feedback window, HARQ information is transmitted, where the HARQ information includes a first HARQ information bit.

[0178] For example, in this embodiment, the terminal determines the time domain unit position where the HARQ feedback is located according to the old Koffset-1, and the terminal determines the HARQ information bits included in the HARQ codebook based on the original method. For example, for the type 1 HARQ feedback codebook, the terminal feeds back the HARQ information according to the feedback window (K1set required to be fed back on the target HARQ transmission unit) determined in the old Koffset-1 and the corresponding HARQ information.

[0179] FIG2 d is a schematic diagram illustrating a HARQ information transmission method according to an embodiment of the present disclosure. As shown in FIG2 d , in some implementations, the above step S2105 includes the following steps:

[0180] determining a second HARQ resource according to the second timing offset parameter;

[0181] HARQ information is transmitted based on the second HARQ resource.

[0182] For example, in this embodiment, the terminal uses Koffset-2 used by the time domain unit where the DCI is located to determine the HARQ feedback resources and HARQ codebook of the HARQ information. At this time, the terminal performs HARQ information feedback based on the HARQ feedback resources and HARQ codebook determined by Koffset-2, and abandons the HARQ information transmission determined based on Koffset-1.

[0183] Optionally, in some implementations, the transmitting of HARQ information based on the second HARQ resource includes:

[0184] Determining a second HARQ information bit and a second feedback window according to the second HARQ resource;

[0185] Based on the second feedback window, HARQ information is transmitted, where the HARQ information includes second HARQ information bits.

[0186] For example, in this embodiment, the terminal determines the time domain unit position where the HARQ feedback is located according to the new Koffset-2, and the terminal determines the HARQ information bits included in the HARQ codebook based on the original method. For example, for the type 1 HARQ feedback codebook, the terminal feeds back the HARQ information according to the feedback window determined by the new Koffset-2 (K1set required to be fed back on the target HARQ transmission unit) and the corresponding HARQ information.

[0187] FIG2e is a schematic diagram illustrating a HARQ information transmission method according to an embodiment of the present disclosure. As shown in FIG2e , in some implementations, the above step S2105 includes the following steps:

[0188] Determining a first HARQ resource and first HARQ information according to the first timing offset parameter, and determining a second HARQ resource and second HARQ information according to the second timing offset parameter;

[0189] First HARQ information is transmitted based on the first HARQ resource, and second HARQ information is transmitted based on the second HARQ resource.

[0190] For example, in this embodiment, the terminal feeds back HARQ information on the original Koffset and the new Koffset respectively. The terminal determines the HARQ information bits contained in the HARQ codebook based on the original method. If it is a type 1 HARQ feedback codebook, the terminal determines the K1set and the corresponding HARQ codebook information that need to be fed back at the HARQ feedback resource position corresponding to the old Koffset-1. The terminal determines the K2set and the corresponding HARQ codebook information that need to be fed back at the HARQ feedback resource position corresponding to the new Koffset-2, and based on the HARQ feedback resource corresponding to Koffset-1, feeds back the HARQ information and HARQ codebook information corresponding to K1set; based on the HARQ feedback resource corresponding to Koffset-2, feeds back the HARQ information and HARQ codebook information corresponding to K2set.

[0191] In some embodiments, the method further comprises:

[0192] The terminal determines to receive a first physical downlink control channel PDCCH of DCI;

[0193] Obtain a first transmission time slot of tail information in a first PDCCH;

[0194] A first effective time of a first timing offset parameter is determined according to the first transmission time slot.

[0195] For example, in this embodiment, when the network device schedules PUCCH or PUSCH transmission through DCI, the effective time of Koffset-1 configured in the DCI is consistent with the first transmission time slot of the last symbol received by the PDCCH providing the DCI format. That is, in the time domain space, the end time of the first transmission time unit of the end information of the first PDCCH is the first effective time of the first timing offset parameter. For example, the PDCCH information can be understood as an information resource string in the time domain. The time when the front information of the information arrives at the terminal is inconsistent with the time when the end information arrives at the terminal, and the first effective time of the first timing offset parameter is the same as the time when the end information of the first PDCCH reaches the terminal. At the end time point of the first PDCCH end information, the first timing offset parameter takes effect.

[0196] In some embodiments, the method further comprises:

[0197] Determining a physical uplink control channel PUCCH according to the second timing offset parameter;

[0198] Obtaining a second transmission time slot of the PUCCH;

[0199] Determining, according to the second transmission time slot, subcarrier spacing (SCS) configuration information for the PUCCH transmission;

[0200] Determine a second effective time of the second timing deviation parameter based on the SCS configuration information and the second transmission time slot.

[0201] For example, in this embodiment, the network device provides Koffset-2 to the UE through a MAC CE command, determines the PUCCH for transmitting the Koffset-2 through Koffset-2, determines the second transmission time slot of the PUCCH, wherein the second transmission time slot is the PUCCH time slot for providing HARQ-ACK information of the PDSCH instructed by the MAC CE, and determines the SCS configuration information according to the second transmission time slot, wherein the SCS configuration information is the SCS configuration for PUCCH transmission determined in the time slot when the MAC CE instruction is applied. According to the SCS configuration information and the second transmission time slot, the second effective time of the second timing deviation parameter is determined. For example, the UE is in the time slot Koffset-2 in the MAC CE command is applied in the first time slot after the MAC CE command, where k is the time slot in which the UE will send PUCCH with HARQ-ACK information for the PDSCH providing the MAC CE command, and μ is the SCS configuration for PUCCH transmission determined in the time slot when the MAC CE command is applied.

[0202] In some embodiments, the method further comprises:

[0203] The network device 102 receives HARQ information, where the HARQ information is transmitted by the terminal based on a first HARQ resource, and the first HARQ resource is determined by the terminal according to a first timing offset parameter.

[0204] For example, in this embodiment, the network device 102 receives HARQ information fed back by the terminal 101. The HARQ information is HARQ information fed back by the terminal 101 based on the first HARQ resource determined based on the first timing offset parameter.

[0205] In some embodiments, the method further comprises:

[0206] HARQ information is received, where the HARQ information is transmitted by the terminal based on a second HARQ resource, and the second HARQ resource is determined by the terminal according to a second timing offset parameter.

[0207] For example, in this embodiment, the terminal 101 performs HARQ resource feedback based on the second HARQ resource determined by the second timing offset parameter, so that the network device 102 receives HARQ information based on the second HARQ resource feedback.

[0208] In some embodiments, the method further comprises:

[0209] Receive first HARQ information and second HARQ information, where the first HARQ information is transmitted by the terminal based on a first HARQ resource, and the first HARQ resource is determined by the terminal according to a first timing deviation parameter; and the second HARQ information is transmitted by the terminal based on a second HARQ resource, and the second HARQ resource is determined by the terminal according to the second timing deviation parameter.

[0210] For example, in this embodiment, the network device 102 receives first HARQ information based on first HARQ resource feedback and second HARQ information based on second HARQ resource feedback.

[0211] In some embodiments, the method further comprises:

[0212] The first uplink information fed back by the terminal according to the DCI and the second uplink information fed back by the terminal according to the MAC control information are received, wherein neither the first uplink information nor the second uplink information includes HARQ information.

[0213] For example, in this embodiment, when the positions of the first HARQ resource determined by the first timing deviation parameter and the second HARQ resource determined by the second timing deviation parameter in the terminal 101 are inconsistent in the time domain space, the terminal 101 abandons the feedback of the HARQ information in the UL information, so that the first uplink information and the second uplink information received in the network device 102 do not include HARQ information.

[0214] In some embodiments, the names of information, etc. 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", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0215] In some embodiments, the terms "codebook," "codeword," and "precoding matrix" may be used interchangeably. For example, a codebook may be a collection of one or more codewords / precoding matrices.

[0216] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0217] In some embodiments, the terms "downlink control information (DCI)", "downlink (DL) assignment", "DL DCI", "uplink (UL) grant", "UL DCI" and the like may be used interchangeably.

[0218] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" can be used interchangeably, and terms such as "physical uplink shared channel (PUSCH)" and "UL data" can be used interchangeably.

[0219] In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like may be used interchangeably.

[0220] In some embodiments, the terms "search space", "search space set", "search space configuration", "search space set configuration", "control resource set (CORESET)", "CORESET configuration" and the like may be used interchangeably.

[0221] In some embodiments, terms such as "synchronization signal (SS)", "synchronization signal block (SSB)", "reference signal (RS)", "pilot", and "pilot signal" can be used interchangeably.

[0222] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0223] In some embodiments, terms such as "resource block (RB)", "physical resource block (PRB)", "sub-carrier group (SCG)", "resource element group (REG)", "PRB pair", "RB pair", "resource element (RE)", and "sub-carrier" can be used interchangeably.

[0224] In some embodiments, the terms "precoding", "precoder", "weight", "precoding weight", "quasi-co-location (QCL)", "transmission configuration indication (TCI) state", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "the number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angular degree", "antenna", "antenna element", "panel" and the like can be used interchangeably.

[0225] In some embodiments, terms such as "frame", "radio frame", "subframe", "slot", "sub-slot", "mini-slot", "symbol", "symbol", and "transmission time interval (TTI)" can be used interchangeably.

[0226] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0227] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0228] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0229] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the recipient to respond to the content sent.

[0230] In the above technical solution, the terminal determines a first timing offset parameter for hybrid automatic repeat request (HARQ) information based on received downlink control information (DCI). Before feeding back the HARQ information based on the first timing offset parameter, the terminal receives MAC control information from a network device, which indicates a second timing offset parameter. The terminal then determines the transmission method for the HARQ information based on the first and / or second timing offset parameters. Therefore, when the timing offset parameter is updated, the terminal's HARQ feedback resources and HARQ codebook are designed to ensure consistent HARQ feedback information and reliable data transmission.

[0231] FIG3 is a flow chart of a communication method according to an embodiment of the present disclosure. The method is executed by the terminal 101. As shown in FIG3 , the method includes the following steps:

[0232] Step S3101: The terminal determines a first timing offset parameter of hybrid automatic repeat request HARQ information according to the received downlink control DCI.

[0233] In the embodiments of the present disclosure, the implementation of step S3101 may refer to the embodiment of the aforementioned step S2102 and will not be repeated here.

[0234] Step S3102: Before feeding back HARQ information based on the first timing offset parameter, MAC control information is received, where the MAC control information is used to indicate a second timing offset parameter.

[0235] In the embodiments of the present disclosure, the implementation of step S3102 may refer to the embodiment of the aforementioned step S2104 and will not be repeated here.

[0236] Step S3103: Determine the transmission mode of the HARQ information according to the first timing offset parameter and / or the second timing offset parameter.

[0237] In the embodiments of the present disclosure, the implementation of step S3103 may refer to the embodiment of the aforementioned step S2105 and will not be repeated here.

[0238] In the above technical solution, a terminal determines a first timing offset parameter for hybrid automatic repeat request (HARQ) information based on received downlink control information (DCI). Before feeding back the HARQ information based on the first timing offset parameter, the terminal receives MAC control information indicating a second timing offset parameter. The MAC control information then determines the transmission method for the HARQ information based on the first and / or second timing offset parameters. Consequently, when the timing offset parameter is updated, the terminal's HARQ feedback resources and HARQ codebook are designed to ensure consistent HARQ feedback information and reliable data transmission.

[0239] FIG4 is a flow chart of a communication method according to an embodiment of the present disclosure. The method is executed by the network device 102. As shown in FIG4 , the method includes the following steps:

[0240] In step S4101, a network device sends a DCI to a terminal, where the DCI is used to instruct the terminal to determine a first timing offset parameter of HARQ information according to the DCI.

[0241] In the embodiments of the present disclosure, the implementation of step S4101 may refer to the embodiment of the aforementioned step S2101 and will not be repeated here.

[0242] Step S4102: The network device sends MAC control information to the terminal, where the MAC control information is used to indicate a second timing offset parameter.

[0243] In the embodiments of the present disclosure, the implementation of step S4102 may refer to the embodiment of the aforementioned step S2106 and will not be repeated here.

[0244] In the above technical solution, a network device transmits downlink control information (DCI) that instructs a terminal to determine a first timing offset parameter for HARQ information based on the DCI. The network device then transmits MAC control information to the terminal that indicates a second timing offset parameter. The terminal then determines the HARQ information transmission method based on the first and / or second timing offset parameters. Therefore, when the timing offset parameter is updated, the terminal's HARQ feedback resources and HARQ codebook are designed to ensure consistent HARQ feedback information and reliable data transmission.

[0245] FIG5 is a flow chart of a communication method according to an embodiment of the present disclosure. The method is executed by the terminal 101. As shown in FIG5 , the method includes the following steps:

[0246] Step S5101: Terminal 101 determines the resource location of uplink feedback according to the received DCI.

[0247] In some implementations, the DCI is used to schedule PDSCH transmission in terminal 101 .

[0248] Step S5102: Terminal 101 receives MAC CE information.

[0249] In some implementations, the MAC CE information is used to update the Koffset value in the terminal 101 .

[0250] In step S5103, the terminal 101 determines the HARQ feedback resource location and HARQ codebook information according to the DCI and MAC CE information.

[0251] In some implementations, when the Koffset-2 value updated by the terminal MAC CE and the Koffset-1 value corresponding to the time domain unit where the scheduling instruction DCI is located result in inconsistency in the time domain position of the HARQ resource, the terminal abandons HARQ transmission on the target resource.

[0252] In some implementations, the terminal determines the HARQ feedback resource using the Koffset-1 used by the time domain unit where the DCI is located. For example, the terminal determines the time domain unit location where the HARQ feedback is located based on Koffset-1, and the terminal determines the HARQ information bits included in the HARQ codebook based on the existing method. If the HARQ feedback codebook is type 1, the terminal uses the feedback window (K1set required for feedback on the target HARQ transmission unit) determined in the old Koffset-1 and the corresponding HARQ information.

[0253] In some implementations, the terminal uses the updated Koffset-2 to determine the HARQ feedback resource. For example, the terminal determines the time domain unit location of the HARQ feedback according to the updated Koffset-2. The terminal determines the HARQ information bits included in the HARQ codebook based on the existing method. For a type 1 HARQ feedback codebook, the terminal determines the feedback window (the K1set required for feedback on the target HARQ transmission unit) and the corresponding HARQ information according to the new Koffset-2.

[0254] In some implementations, the terminal feeds back HARQ information based on the original Koffset-1 and the new Koffset-2, respectively. For example, the terminal determines the HARQ information bits included in the HARQ codebook based on the existing method. For a type 1 HARQ feedback codebook, the terminal determines the K1set and corresponding HARQ codebook information to be fed back based on the HARQ feedback resource location corresponding to the old Koffset-1. The terminal also determines the K1set and corresponding HARQ codebook information to be fed back based on the HARQ feedback resource location corresponding to the new Koffset-2.

[0255] In the above technical solution, when the timing deviation parameter is updated in the satellite communication scenario, the terminal's HARQ feedback resource and HARQ codebook design method enable the base station and the terminal to have a consistent understanding of the HARQ feedback information, thereby ensuring the reliability of data transmission.

[0256] FIG6 is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure. As shown in FIG6 , the terminal 6100 may include: a processing module 6101, a transceiver module 6102, and an execution module 6103. In some embodiments, the execution module 6100 is used to determine reference signal resources, which are used for beam measurement. The processing module 6101 is configured to determine a first timing offset parameter for hybrid automatic repeat request (HARQ) information based on received downlink control DCI. The transceiver module 6102 is configured to receive MAC control information indicating a second timing offset parameter before feeding back the HARQ information based on the first timing offset parameter. The execution module 6103 is configured to determine a transmission method for the HARQ information based on the first timing offset parameter and / or the second timing offset parameter. Optionally, the processing module 6101, the transceiver module 6102, and the execution module 6103 are used to perform at least one of the communication steps of sending, receiving, or executing performed by the terminal in any of the above methods, which will not be repeated here.

[0257] Figure 7 is a structural diagram of a network device proposed in an embodiment of the present disclosure. As shown in Figure 7, the network device 7100 may include: a first transceiver module 7101 and a second transceiver module 7102. In some embodiments, the first transceiver module 7101 is configured to send DCI to the terminal, and the DCI is used to instruct the terminal to determine the first timing deviation parameter of the HARQ information according to the DCI. The second transceiver module 7102 is configured for the network device to send MAC control information to the terminal, and the MAC control information is used to indicate the second timing deviation parameter. Optionally, the above-mentioned transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the network device in any of the above methods, which will not be repeated here. In some embodiments, the transceiver module may include a sending module and / or a receiving module, and the sending module and the receiving module may be separate or integrated together. Optionally, the transceiver module can be replaced with the transceiver.

[0258] Figure 8 is a schematic diagram of the structure of a network device 8100 proposed in an embodiment of the present disclosure. Network device 8100 can be a communications device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device implementing any of the above methods, or a chip, a chip system, or a processor that supports a terminal implementing any of the above methods. Network device 8100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0259] As shown in Figure 8, the network device 8100 includes one or more processors 8101. The processor 8101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control communication devices (such as base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. Optionally, the network device 8100 is used to perform any of the above methods. Optionally, one or more processors 8101 are used to call instructions to enable the network device 8100 to perform any of the above methods.

[0260] In some embodiments, the network device 8100 further includes one or more transceivers 8102. When the network device 8100 includes one or more transceivers 8102, the transceiver 8102 performs at least one of the communication steps, such as sending and / or receiving, in the above-described method, and the processor 8101 performs at least one of the other steps. In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be interchangeable, the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be interchangeable, and the terms receiver, receiving unit, receiver, and receiving circuit may be interchangeable.

[0261] In some embodiments, network device 8100 also includes one or more memories 8103 for storing data. Alternatively, all or part of memory 8103 may be located outside of network device 8100. In alternative embodiments, network device 8100 may include one or more interface circuits 8104. Interface circuits 8104 may optionally be connected to memory 8102 and may be configured to receive data from memory 8102 or other devices, or to send data to memory 8102 or other devices. For example, interface circuit 8104 may read data stored in memory 8102 and send the data to processor 8101.

[0262] The network device 8100 described in the above embodiment may be a network device or a terminal, but the scope of the network device 8100 described in the present disclosure is not limited thereto, and the structure of the network device 8100 may not be limited by FIG. 8A. The network device may be an independent device or may be part of a larger device. For example, the network device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0263] The present disclosure also provides a storage medium having instructions stored thereon. When the instructions are executed on the network device 8100, the network device 8100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a transient storage medium.

[0264] The present disclosure also provides a program product, which, when executed by the network device 8100, enables the network device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0265] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

[0266] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0267] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0268] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

Claims

1. A communication method, characterized in that: The method comprises: The terminal determines, according to the received downlink control information DCI, a first timing deviation parameter of hybrid automatic repeat request HARQ information; Before feeding back the HARQ information based on the first timing deviation parameter, receiving MAC control information, where the MAC control information is used to indicate a second timing deviation parameter; A transmission mode of the HARQ information is determined according to the first timing offset parameter and / or the second timing offset parameter.

2. The method according to claim 1, characterized in that The determining, according to the first timing deviation parameter and / or the second timing deviation parameter, a transmission mode of the HARQ information includes: Determine a first time domain position of a HARQ resource according to the first timing deviation parameter, and determine a second time domain position of the HARQ resource according to the second timing deviation parameter; Determine that the first time domain position is inconsistent with the second time domain position, and abandon the transmission of the HARQ information on the HARQ resource.

3. The method according to claim 1, characterized in that The determining, according to the first timing deviation parameter and / or the second timing deviation parameter, a transmission mode of the HARQ information includes: Determining a first HARQ resource according to the first timing deviation parameter; The HARQ information is transmitted based on the first HARQ resource.

4. The method according to claim 3, characterized in that The transmitting the HARQ information based on the first HARQ resource includes: Determining a first HARQ information bit and a first feedback window based on the first HARQ resource; The HARQ information is transmitted based on the first feedback window, wherein the HARQ information includes the first HARQ information bit.

5. The method according to claim 1, characterized in that The determining, according to the first timing deviation parameter and / or the second timing deviation parameter, a transmission mode of the HARQ information includes: Determining a second HARQ resource according to the second timing deviation parameter; The HARQ information is transmitted based on the second HARQ resource.

6. The method according to claim 5, characterized in that The transmitting the HARQ information based on the second HARQ resource includes: Determining a second HARQ information bit and a second feedback window according to the second HARQ resource; The HARQ information is transmitted based on the second feedback window, wherein the HARQ information includes the second HARQ information bits.

7. The method according to claim 1, characterized in that The determining, according to the first timing deviation parameter and / or the second timing deviation parameter, a transmission mode of the HARQ information includes: Determine a first HARQ resource and a first HARQ information according to the first timing deviation parameter, and determine a second HARQ resource and a second HARQ information according to the second timing deviation parameter; The first HARQ information is transmitted based on the first HARQ resource, and the second HARQ information is transmitted based on the second HARQ resource.

8. The method according to any one of claims 1 to 7, characterized in that The method further comprises: The terminal determines a first physical downlink control channel PDCCH for receiving the DCI; Obtain a first transmission time slot of the last information in the first PDCCH; A first effective time of the first timing deviation parameter is determined according to the first transmission time slot.

9. The method according to any one of claims 1 to 8, characterized in that The method further comprises: Determining a physical uplink control channel PUCCH according to the second timing deviation parameter; Acquire a second transmission time slot of the PUCCH; Determine, according to the second transmission time slot, subcarrier spacing SCS configuration information for the PUCCH transmission; Determine a second effective time of the second timing deviation parameter based on the SCS configuration information and the second transmission time slot.

10. A communication method, characterized in that: The method comprises: The network device sends downlink control information DCI to the terminal, where the DCI is used to instruct the terminal to determine a first timing deviation parameter of HARQ information according to the DCI; The network device sends MAC control information to the terminal, where the MAC control information is used to indicate a second timing deviation parameter.

11. The method according to claim 10, characterized in that The method further comprises: Receive HARQ information, where the HARQ information is transmitted by the terminal based on a first HARQ resource, and the first HARQ resource is determined by the terminal according to the first timing deviation parameter.

12. The method according to claim 10, characterized in that The method further comprises: Receive HARQ information, where the HARQ information is transmitted by the terminal based on a second HARQ resource, and the second HARQ resource is determined by the terminal according to the second timing deviation parameter.

13. The method according to claim 10, characterized in that The method further comprises: Receive first HARQ information and second HARQ information, where the first HARQ information is transmitted by the terminal based on a first HARQ resource, and the first HARQ resource is determined by the terminal according to the first timing deviation parameter; and the second HARQ information is transmitted by the terminal based on a second HARQ resource, and the second HARQ resource is determined by the terminal according to the second timing deviation parameter.

14. The method according to claim 10, characterized in that The method further comprises: Receive first uplink information fed back by the terminal according to the DCI and second uplink information fed back by the terminal according to the MAC control information, wherein neither the first uplink information nor the second uplink information includes HARQ information.

15. A terminal, characterized in that: include: A processing module, configured to determine a first timing deviation parameter of a hybrid automatic repeat request HARQ information according to received downlink control information DCI; A transceiver module, configured to receive MAC control information before feeding back the HARQ information based on the first timing deviation parameter, wherein the MAC control information is used to indicate a second timing deviation parameter; An execution module is configured to determine a transmission method of the HARQ information according to the first timing deviation parameter and / or the second timing deviation parameter.

16. A network device, characterized in that: include: A first transceiver module is configured to send a DCI to a terminal, where the DCI is used to instruct the terminal to determine a first timing deviation parameter of HARQ information according to the DCI; The second transceiver module is configured as a network device to send MAC control information to the terminal, where the MAC control information is used to indicate a second timing deviation parameter.

17. A terminal, characterized in that: include: one or more processors; The terminal is used to execute the communication method according to any one of claims 1 to 9.

18. A network device, characterized in that: include: one or more processors; Wherein, the network device is used to execute the communication method described in any one of claims 10-14.

19. A communication system, characterized in that: The invention comprises a terminal and a network device, wherein the terminal is configured to implement the communication method according to any one of claims 1 to 9, and the network device is configured to implement the communication method according to any one of claims 10 to 14.

20. A storage medium storing instructions, characterized in that: When the instruction is executed on a communication device, the communication device is caused to execute the communication method according to any one of claims 1 to 9 and 10 to 14.

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