Communication method, device, system, storage medium and program product
Patent Information
- Application Number
- CN202580007077.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-10-30
Smart Images
Figure CN123023347A_ABST
Abstract
Description
Communication methods, devices, systems, storage media and software products Technical Field
[0001] This disclosure relates to the field of communication technology, and in particular to a communication method, device, system, storage medium, and program product. Background Technology
[0002] In communication systems, carrier aggregation (CA) technology can be used to improve system bandwidth and throughput. For example, CA is supported in terrestrial network (TN) transmission to enhance user throughput. Summary of the Invention
[0003] There is a need for CA in non-terrestrial networks (NTN), but CA is not yet supported in NTN transmissions.
[0004] This disclosure provides a communication method, device, system, storage medium, and program product.
[0005] In a first aspect, embodiments of this disclosure provide a communication method executed by a terminal, the method comprising:
[0006] A Media Access Control Element (MAC CE) that receives Media Access Control signals from a network device, wherein the MAC CE is used to activate or deactivate a Secondary Cell (Scell).
[0007] The effective time of the MAC CE is determined based on the first offset K, wherein the first offset is the offset value related to Time Advanced (TA) in the non-terrestrial network NTN.
[0008] Secondly, embodiments of this disclosure provide a communication method executed by a network device, the method comprising:
[0009] A MAC CE is sent to the terminal. The MAC CE is used to activate or deactivate the Scell. The effective time of the MAC CE is determined according to a first offset K, where the first offset is the TA-related offset value in the NTN.
[0010] Thirdly, embodiments of this disclosure provide a communication device for performing the method described in the first or second aspect.
[0011] Fourthly, embodiments of this disclosure provide a terminal, including a processor and a memory, wherein...
[0012] The memory is used to store computer programs;
[0013] The processor is used to execute the computer program to implement the method as described in the first aspect.
[0014] Fifthly, embodiments of this disclosure provide a network device, including a processor and a memory, wherein,
[0015] The memory is used to store computer programs;
[0016] The processor is used to execute the computer program to implement the method as described in the second aspect.
[0017] Sixthly, embodiments of this disclosure provide a communication system, including a network device and a terminal, wherein,
[0018] The network device is configured to implement the method as described in the first aspect;
[0019] The terminal is configured to implement the method as described in the second aspect.
[0020] In a seventh aspect, embodiments of this disclosure provide a storage medium storing instructions, wherein...
[0021] When the instructions are executed on the communication device, the communication device causes the communication device to perform the method as described in the first aspect or the second aspect.
[0022] Eighthly, according to an embodiment of the present disclosure, a program product includes at least one of a program and instructions, wherein when the program and instructions are executed by a communication device, they implement the method described in the first aspect or the second aspect.
[0023] In this embodiment of the disclosure, for the MAC CE used to activate or deactivate the Scell, the effective time of the MAC CE can be determined according to the first offset K related to the TA in the NTN. In this way, an accurate and reasonable effective time can be obtained in the scenario where the TA in the NTN is large. This is beneficial to improve the throughput in the NTN based on CA and can improve the communication efficiency in this scenario. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.
[0025] Figures 1A and 1B are exemplary schematic diagrams of the architecture of a communication system provided according to embodiments of the present disclosure;
[0026] Figure 1C is an exemplary schematic diagram of a TN timing sequence provided according to an embodiment of the present disclosure;
[0027] Figures 1D and 1E are exemplary schematic diagrams of an NTN provided according to an embodiment of the present disclosure;
[0028] Figures 2A and 2B are exemplary interactive schematic diagrams of the method provided according to embodiments of the present disclosure;
[0029] Figures 3A to 3E are exemplary interactive schematic diagrams of the method provided according to embodiments of the present disclosure;
[0030] [Correction 11.04.2025 based on Rule 91] Figure 4A is a schematic diagram of the structure of a network device according to an embodiment of the present disclosure;
[0031] [Correction 11.04.2025 based on Rule 91] Figure 4B is a schematic diagram of the structure of a terminal according to an embodiment of the present disclosure;
[0032] Figure 5A is a schematic diagram of a communication device according to an embodiment of the present disclosure;
[0033] Figure 5B is a schematic diagram of a communication device according to an embodiment of the present disclosure. Detailed Implementation
[0034] This disclosure provides a communication method, device, system, storage medium, and program product.
[0035] In a first aspect, embodiments of this disclosure provide a communication method executed by a terminal, the method comprising:
[0036] The control unit MAC CE receives media access control signals from network devices, wherein the MAC CE is used to activate or deactivate the secondary cell Scell.
[0037] The effective time of MAC CE is determined based on the first offset K, where the first offset is the offset value related to the timing advance TA in the non-terrestrial network NTN.
[0038] In the above embodiments, for the MAC CE used to activate or deactivate the Scell, the effective time of the MAC CE can be determined according to the first offset K related to the TA in the NTN. In this way, an accurate and reasonable effective time can be obtained in the scenario where the TA in the NTN is large, which is beneficial to improve the throughput in the NTN based on CA and can improve the communication efficiency in this scenario.
[0039] In conjunction with the embodiments of the first aspect, in some embodiments, the effective time of MAC CE is one of the following:
[0040] In time (n+k+first offset K);
[0041] In time (n+k);
[0042] After time (n+k+first offset K);
[0043] After time (n+k);
[0044] Where n is the time when the terminal receives the MAC CE, and k is a value determined based on the protocol.
[0045] In the above embodiments, compensation can be made based on the receiving time k or n+k according to the first offset K to obtain the effective time of MAC CE applicable in NTN, so as to ensure communication performance.
[0046] In conjunction with the embodiments of the first aspect, in some embodiments, k satisfies one of the following:
[0047] Where k1 is the time associated with the Hybrid Automatic Repeat reQuest-Acknowledgment (HARQ-ACK) information corresponding to MAC CE, and X is an integer or fraction, such as X = 1, 2, 3, 4, 5, 1 / 2, 3 / 2 or 5 / 2. It is the number of time slots per subframe for the sub-carrier spacing (SCS) configuration μ of the PUCCH transmission carrying HARQ-ACK.
[0048] In the above embodiments, k can be based on X and Determine, or based on X, The first offset is determined, which makes the effective time of MAC CE based on k more suitable for NTN scenarios, thus improving the communication performance in NTN scenarios.
[0049] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:
[0050] Perform Scell activation or deactivation operations after (n+k+first offset K) or after n+k and before Tm, where Tm is a value determined based on the protocol.
[0051] In the above embodiments, after determining the effective time of MAC CE, the terminal can perform Scell activation-related operations or deactivation-related operations within an appropriate time range, thereby improving the communication performance of NTN in CA scenarios.
[0052] In conjunction with the embodiments of the first aspect, in some embodiments, when the effective time of MAC CE is (n+k+first offset K) or n+k, the method further includes at least one of the following:
[0053] In time slot n+k or n+k+first offset K, a Channel State Information (CSI) report for the active serving cell is sent to the network device.
[0054] In time slot n+k or n+k+first offset K, perform actions related to the secondary cell deactivation timer.
[0055] In the first time slot after the active serving cell n+k or (n+k+first offset K), execute the CSI report corresponding to the inactive serving cell in n+k or (n+k+first offset K).
[0056] In some embodiments, when the effective time of MAC CE is (n+k+first offset K) or n+k, it can perform several special cases such as sending a Channel State Information (CSI) report of the active serving cell to the network device, performing actions related to the deactivation timer of the secondary cell, and performing a CSI report corresponding to the non-active serving cell in (n+k+first offset K) or n+k, thereby ensuring communication performance.
[0057] In conjunction with the embodiments of the first aspect, in some embodiments, MAC CE is used to deactivate Scell, and the method further includes at least one of the following:
[0058] Perform the deactivation-related operations before Tm;
[0059] Perform the CSI reporting action for the active serving cell in (n+k+first offset K) or n+k;
[0060] Where n is the time when the terminal receives the MAC CE, and k is a value determined based on the protocol.
[0061] In the above embodiments, when the MAC CE is used to deactivate the Scell, after determining the effective time of the MAC CE, the deactivation-related operation can be performed at an appropriate time, or the CSI reporting-related action of activating the serving cell can be performed, thereby improving the communication performance in the Scell deactivation scenario.
[0062] In conjunction with the embodiments of the first aspect, in some embodiments, the deactivation timer associated with Scell expires at time n, and the method further includes at least one of the following:
[0063] After (n+k+first offset K) or after n_+k and before Tm, execute Scell to activate the relevant operation;
[0064] exist In the first time slot thereafter, a CSI report for activating the serving cell is sent to the network equipment.
[0065] In the above embodiments, for cases where the deactivation timer associated with Scell expires at time n, the Scell deactivation operation can be performed after (n+k+first offset K) or after n_+k and before Tm, thereby ensuring that the Scell deactivation operation can be executed normally. The CSI is reported in the first time slot thereafter, thus ensuring that the CSI report of the active serving cell can still be reported, guaranteeing communication efficiency.
[0066] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:
[0067] An uplink transfer is performed after (n+k+first offset K) or after n+k and before Tm, and the uplink transfer includes at least one of the following:
[0068] Physical Uplink Shared Channel (PUSCH) transmission;
[0069] Transmission of HARQ-ACK in the Physical Uplink Control Channel (PUCCH);
[0070] CSI reference resource timing;
[0071] Transmission of non-periodic sounding reference signal (SRS).
[0072] In the above embodiments, after receiving the MAC CE, the terminal can transmit at least one of multiple uplink transmission scenarios at an appropriate time or within a suitable time range, thereby ensuring uplink transmission performance and improving uplink communication efficiency.
[0073] In conjunction with the embodiments of the first aspect, in some embodiments, the MAC CE is also used to activate downlink transmission features, and the MAC CE takes effect after the network device receives the HARQ-ACK corresponding to the MAC CE.
[0074] In the above embodiments, when the MAC CE is used to activate the downlink transmission feature, the MAC CE can take effect after the network device receives the HARQ-ACK corresponding to the MAC CE, thereby performing the corresponding communication behavior at the appropriate time.
[0075] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:
[0076] After MAC CE takes effect, the behavior corresponding to the downlink transmission characteristics is executed. The behavior corresponding to the downlink transmission characteristics includes at least one of the following:
[0077] from At the start of the next time slot, a CSI report is sent to the network device;
[0078] from Starting from the first time slot thereafter, CSI-RS resource configuration is used to transmit CSI-RS or CSI-IM resource configuration is used to transmit CSI-IM for CSI interference measurement.
[0079] from Starting from the first time slot thereafter, transmissions based on deactivated CSI-RS or CSI-IM resource sets will cease;
[0080] from Starting from the first time slot thereafter, the action corresponding to the zero-power reference signal ZP CSI-RS resource is executed;
[0081] from Starting from the first time slot thereafter, the Transmission Configuration Indicator (TCI) status is applied;
[0082] Where n' is the time when the terminal sends the HARQ-ACK.
[0083] In the above embodiments, after MAC CE takes effect, the terminal can perform various downlink transmission feature-related behaviors at appropriate times to improve communication performance.
[0084] In conjunction with the embodiments of the first aspect, in some embodiments, the first offset K includes one of the following:
[0085] kmac and kmac are used to indicate the round-trip time (RTT) between the base station and the TA reference point in a network device.
[0086] koffset, koffset is used to indicate the RTT between the terminal and the TA reference point;
[0087] koffset+kmac;
[0088] min(koffset,kmac);
[0089] max(koffset,kmac);
[0090] ktotal-koffset, ktotal is used to indicate the RTT of the transmission between the terminal and the base station via satellite;
[0091] This indicates the timing deviation between different base stations in a network device.
[0092] Optionally, network devices can send or transmit broadcast messages such as Master Information Block (MIB), system information such as System Information Block (SIB), Radio Resource Control (RRC) messages, or Downlink Control Information (DCI).
[0093] In the above embodiments, in the NTN scenario, the first offset K can be a value determined based on the TA-related parameters in the NTN, thereby effectively compensating for the impact of TA on communication in the NTN.
[0094] In conjunction with the embodiments of the first aspect, in some embodiments, X takes the value a / m, where a and m are integers; in this embodiment, X is a fraction, for example, X is 3 / 2, 5 / 2 or 1 / 2.
[0095] In the above embodiments, X can be a fraction, such as a number less than 3, to improve the applicability of X in NTN scenarios.
[0096] Alternatively, X can also be an integer, such as X being 0, 1, 2, 3, 4, or 5, etc.
[0097] In conjunction with the embodiments of the first aspect, in some embodiments, kmac is indicated by the network device, or kmac is 0.
[0098] In the above embodiments, the terminal can determine the kmac based on the instructions of the network device, thereby determining a suitable first offset.
[0099] In conjunction with the embodiments of the first aspect, in some embodiments, kmac satisfies one of the following:
[0100] kmac is max(kmac 1, kmac 2), where kmac 1 and kmac 2 represent the kmac corresponding to different satellites. Network equipment includes a single base station with multiple satellites.
[0101] kmac for The network equipment includes multiple base stations and a single satellite;
[0102] kmac for The network equipment includes multiple base stations and multiple satellites, and the value of q is in {1, -1}.
[0103] In the above embodiments, kmac can be determined with different values for scenarios of a single base station with multiple satellites, multiple base stations with a single satellite, and multiple base stations with multiple satellites, so that kmac can meet the needs of different scenarios and improve the applicability and rationality of the first offset in different scenarios.
[0104] In conjunction with the embodiments of the first aspect, in some embodiments, koffset satisfies one of the following:
[0105] koffset is max(koffset 1, koffset 2), where koffset1 and koffset2 represent the koffset corresponding to different satellites. The network device includes a single base station with multiple satellites.
[0106] koffset is The network equipment includes multiple base stations and a single satellite;
[0107] koffset is The network equipment includes multiple base stations and multiple satellites, and the value of q is in {1, -1}.
[0108] In the above embodiments, koffset can be determined to have different values for scenarios such as a single base station with multiple satellites, multiple base stations with a single satellite, and multiple base stations with multiple satellites, so that koffset can meet the needs of different scenarios and improve the applicability and rationality of the first offset in different scenarios.
[0109] Secondly, embodiments of this disclosure provide a communication method executed by a network device, the method comprising:
[0110] A MAC CE is sent to the terminal. The MAC CE is used to activate or deactivate the secondary cell Scell. The effective time of the MAC CE is determined based on the first offset K, where the first offset is the offset value related to the timing advance TA in the non-terrestrial network NTN.
[0111] In the above embodiments, the MAC CE sent by the network device to activate or deactivate the Scell can determine the effective time of the MAC CE based on the first offset K related to the TA in the NTN. This allows for an accurate and reasonable effective time in scenarios where the TA in the NTN is large, which is beneficial for improving the throughput in the NTN based on CA and can improve the communication efficiency in this scenario.
[0112] In conjunction with the embodiments of the second aspect, in some embodiments, the effective time of MAC CE is one of the following:
[0113] In time (n+k+first offset K);
[0114] In time (n+k);
[0115] After time (n+k+first offset K);
[0116] After time (n+k);
[0117] Where n is the time when the terminal receives the MAC CE, and k is a value determined based on the protocol.
[0118] In conjunction with the embodiments of the second aspect, in some embodiments, k satisfies one of the following:
[0119] Where k1 is the time related to the HARQ-ACK information feedback corresponding to MAC CE, and X is an integer or fraction. It is the number of time slots per subframe for the subcarrier spacing SCS configuration μ that carries the PUCCH transmission of HARQ-ACK.
[0120] In conjunction with the embodiments of the second aspect, in some embodiments, Scell activation-related operations or deactivation-related operations are performed after (n+k+first offset K) or n+k and before Tm, where Tm is a value determined based on the protocol.
[0121] In conjunction with the embodiments of the second aspect, in some embodiments, MAC CE is used to deactivate Scell, and is used to perform deactivation-related operations before Tm; and / or, is used to perform CSI reporting-related actions for activating the serving cell in (n+k+first offset K) or n+k.
[0122] Where n is the time when the terminal receives the MAC CE, and k is a value determined based on the protocol.
[0123] In conjunction with the embodiments of the second aspect, in some embodiments, the deactivation timer associated with the Scell expires at time n, and is used to perform the Scell deactivation-related operation after (n+k+first offset K) or n_+k and before Tm; or, the method further includes:
[0124] exist In the first time slot thereafter, the receiving terminal sends the CSI report of the active serving cell.
[0125] In conjunction with the embodiments of the second aspect, in some embodiments, the MAC CE is also used to activate downlink transmission features, and the MAC CE takes effect after the network device receives the HARQ-ACK corresponding to the MAC CE.
[0126] In conjunction with embodiments of the second aspect, in some embodiments, the first offset K includes one of the following:
[0127] kmac, kmac is used to indicate the round-trip time (RTT) between the base station and the TA reference point in a network device;
[0128] koffset, koffset is used to indicate the RTT between the terminal and the TA reference point;
[0129] koffset+kmac;
[0130] min(koffset,kmac);
[0131] max(koffset,kmac);
[0132] ktotal-koffset, ktotal is used to indicate the RTT of the transmission between the terminal and the base station via satellite;
[0133] This indicates the timing deviation between different base stations in a network device. Transmitted via broadcast messages such as MIB, system messages such as SIB, RRC messages, or DCI.
[0134] In conjunction with the embodiments of the second aspect, in some embodiments, X takes the value a / m, where a and m are integers.
[0135] In conjunction with the embodiments of the second aspect, in some embodiments, kmac is indicated by the network device, or kmac is 0.
[0136] In conjunction with the embodiments of the second aspect, in some embodiments, kmac satisfies one of the following:
[0137] kmac is max(kmac 1, kmac 2), where kmac 1 and kmac 2 represent the kmac corresponding to different satellites. Network equipment includes a single base station with multiple satellites.
[0138] kmac for The network equipment includes multiple base stations and a single satellite;
[0139] kmac for The network equipment includes multiple base stations and multiple satellites, and the value of q is in {1, -1}.
[0140] In conjunction with the embodiments of the second aspect, in some embodiments, koffset satisfies one of the following:
[0141] koffset is max(koffset 1, koffset 2), where koffset1 and koffset2 represent the koffset corresponding to different satellites. The network device includes a single base station with multiple satellites.
[0142] koffset is The network equipment includes multiple base stations and a single satellite;
[0143] koffset is The network equipment includes multiple base stations and multiple satellites, and the value of q is in {1, -1}.
[0144] Thirdly, embodiments of this disclosure provide a communication device for performing the method of the first aspect or the second aspect.
[0145] Fourthly, embodiments of this disclosure provide a terminal, including a processor and a memory, wherein...
[0146] The memory is used to store computer programs;
[0147] The processor is used to execute the computer program to implement the method as described in the first aspect.
[0148] Fifthly, embodiments of this disclosure provide a network device, including a processor and a memory, wherein,
[0149] The memory is used to store computer programs;
[0150] The processor is used to execute the computer program to implement the method as described in the second aspect.
[0151] Sixthly, embodiments of this disclosure provide a communication system, including a network device and a terminal, wherein,
[0152] The network device is configured to implement the method as described in the first aspect;
[0153] The terminal is configured to implement the method as described in the second aspect.
[0154] In a seventh aspect, embodiments of this disclosure provide a storage medium storing instructions, wherein...
[0155] When the instructions are executed on the communication device, the communication device causes the communication device to perform the method as described in the first aspect or the second aspect.
[0156] Eighthly, according to an embodiment of the present disclosure, a program product includes at least one of a program and instructions, wherein when the program and instructions are executed by a communication device, they implement the method described in the first aspect or the second aspect.
[0157] This disclosure provides communication methods, devices, systems, storage media, and program products. In some embodiments, terms such as communication method and information processing method may be used interchangeably.
[0158] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular 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 particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments. In all embodiments of this disclosure, unless otherwise specified or logically conflicting, the terminology and / or descriptions between the embodiments are consistent and can be mutually referenced. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.
[0159] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.
[0160] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.
[0161] In the embodiments disclosed herein, "multiple" refers to two or more.
[0162] In some embodiments, the terms “at least one of A or B, at least one of A and B”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.
[0163] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of whether there is a branch B); in some embodiments, B (execute B regardless of whether there is a branch A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, both A and B are executed. The same applies when there are more branches such as A, B, C, etc.
[0164] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execute A regardless of whether a branch B exists); in some embodiments, B (execute B regardless of whether a branch A exists); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, and C.
[0165] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.
[0166] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.
[0167] In some embodiments, terms such as "time / frequency" and "time-frequency domain" refer to the time domain and / or frequency domain.
[0168] In some embodiments, terms such as “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “when…”, “if…”, etc. can be used interchangeably. These descriptions all refer to the device making a corresponding action under certain objective circumstances. They do not necessarily limit the time, nor do they require the device to make a judgment action when implementing it, nor do they mean that there must be other limitations.
[0169] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.
[0170] In some embodiments, devices, etc., may be interpreted as physical or virtual, and their names are not limited to those described in the embodiments. Terms such as “device,” “equipment,” “circuit,” “network element,” “network function,” “network device,” “function,” “node,” “unit,” “section,” “system,” “network,” “chip,” “chip system,” “entity,” and “subject” are interchangeable.
[0171] In some embodiments, "network" can be interpreted as devices included in a network (e.g., access network devices, core network devices, etc.).
[0172] In some embodiments, the terms "access network device (AN device)," "radio access network device (RAN device)," "base station (BS)," "radio base station," "fixed station," "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "serving cell," "carrier," "component carrier," and "bandwidth part (BWP)" can be used interchangeably.
[0173] 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", and "client" can be used interchangeably.
[0174] In some embodiments, access network devices, core network devices, or network devices can be replaced by terminals. For example, embodiments of this disclosure can also be applied to structures where communication between access network devices, core network devices, or network devices and terminals is replaced by communication between multiple terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the structure can also be configured such that the terminal has all or part of the functions of the access network device. Furthermore, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminals (e.g., "sidelink"). For example, uplink channel, downlink channel, etc., can be replaced with sidelink channel, and uplink link, downlink, etc., can be replaced with sidelink link.
[0175] 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, core network device, or network device may also be configured to have all or some of the functions of the terminal.
[0176] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.
[0177] In some embodiments, data, information, etc., may be obtained with the user's consent.
[0178] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.
[0179] Figures 1A and 1B are schematic diagrams of the architecture of a communication system according to embodiments of the present disclosure.
[0180] As shown in Figure 1A, the communication system 100 includes a terminal 101 and a network device 102.
[0181] In some embodiments, terminal 101 includes, for example, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home, but is not limited thereto.
[0182] In some embodiments, network device 102 may be a network device in a TN or NTN.
[0183] For example, as shown in Figure 1B, in the NTN communication system 100, network device 102 may include satellites and base stations, and terminal 101 can communicate with base stations via satellites. Here, satellites can also be called satellite stations, and base stations refer to ground stations or ground base stations.
[0184] In some embodiments, network device 102 may include at least one of access network device and core network device. In an NTN, the access network device may correspond to a base station or terrestrial base station.
[0185] In some embodiments, the access network device is, for example, a node or device that connects a terminal to a wireless network. The access network device may include at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation eNB (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), radio backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a Wi-Fi system, but is not limited thereto.
[0186] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.
[0187] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.
[0188] In some embodiments, a core network device may be a single device comprising one or more network elements, or it may be multiple devices or a group of devices, each comprising all or part of the aforementioned one or more network elements. Network elements may be virtual or physical. The core network may include, for example, at least one of the following: Evolved Packet Core (EPC), 5G Core Network (5GCN), and Next Generation Core (NGC).
[0189] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.
[0190] The following embodiments of this disclosure can be applied to the communication system 100 or some of the main bodies shown in FIG1A or FIG1B, but are not limited thereto. The main bodies shown in FIG1A or FIG1B are illustrative. The communication system may include all or some of the main bodies in FIG1A or FIG1B, or may include other main bodies other than those in FIG1A or FIG1B. The number and form of each main body are arbitrary. Each main body may be physical or virtual. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.
[0191] The embodiments disclosed herein 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), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a 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, systems utilizing other communication methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).
[0192] In some implementations, CA (Carrier Assist) was supported for TN (Network Transmission) in New Radio (NR) Release 15 (Rel-15) to improve user throughput. Later versions of NR (e.g., Rel-19) also supported CA for NTN (Network Transmission). With the development of communication technologies, such as the future 6G network aiming to achieve high-throughput transmission across terrestrial and space networks, there is a need for CA in NTN. It is hoped that NTN CA will be supported during the discussion of the Unified Air Interface (UNIC).
[0193] In some implementations, NTN differs significantly from TN in terms of timing:
[0194] Referring to the TN timing diagram in Figure 1C, assuming uplink TA = 0, it can be seen from Figure 1C that the network device schedules uplink transmission in time slot n, and the terminal can perform uplink transmission, such as sending PUSCH, in time slot n. Specifically, K2 has a value of 0 in time slot n and a value of 1 in time slot n+1. K2 is a constant based on PUSCH; for example, K2 is the slot difference between the Physical Downlink Control Channel (PDCCH) and PUSCH.
[0195] Referring to the NTN timing diagram in Figure 1D, the NTN downlink control scheduling or uplink transmission (resource) activation timing needs to consider a large TA. For example, in downlink control scheduling of uplink transmission, the terminal's uplink transmission needs to be preceded by a large TA to ensure that the uplink and downlink transmissions are aligned at the reference point, for example, in slot n+2. For slot n+1, since the terminal has not yet received the DCI or has not yet finished processing it, and the minimum UE processing time for the DCI can be seen in Figure 1D, the existing constant value k2=1 cannot be used; similarly, k2=0 cannot be used either. Therefore, there may be unusable code points in K2 within the NTN.
[0196] Among them, the uplink transmissions (resources) scheduled or activated by NTN downlink control include at least PUSCH, Message 3 (msg3), PUCCH, CSI resource timing, or SRS.
[0197] In some implementations, an offset Koffset can be introduced in the NTN to ensure the availability of slot intervals K2, K1, or K0. Here, K1 is a constant based on PUCCH, for example, K1 is the slot difference between PDCCH and PUCCH; K0 is a constant based on PDSCH.
[0198] For example, referring to the embodiment in Figure 1D, the introduction of Koffset can guarantee the availability of the code point K2. For example, for K2=1, the compensated Koffset=2, at which point K2+Koffset corresponds to the n+3 time slot (or the time slot corresponding to the original K2=3), making K2=1 available, and the corresponding K2=0 based on Koffset compensation is available.
[0199] In some implementations, K2, K1, and k0 can be indicated by downlink control information (DCI).
[0200] In some implementations, referring to the NTN timing diagram in Figure 1E, for a MAC CE command used to activate downlink transmission features, the terminal can transmit the HARQ-ACK feedback corresponding to the MAC CE uplink in time slot n. In this case, a reasonable effective time for the MAC CE needs to be determined. In an optional example (option 1), if the MAC CE command is activated at position 1 in the diagram, meaning the effective time of the MAC CE is at position 1 or time domain position 1, but the base station has not yet received the HARQ-ACK feedback for the MAC CE, then the MAC CE cannot be effective at this position. Here, L represents the interval between time slot n and position 1. The time for the base station to receive the HARQ-ACK feedback also needs to consider a preset one-way delay, which represents the one-way delay from the base station to the TA reference point. Therefore, to ensure that uplink and downlink are aligned at the base station side and not just the TA reference point side, when considering the effective time of the MAC CE in NTN, the round-trip time (RTT) from the base station side to the TA reference point needs to be compensated in terms of timing relationships.
[0201] In some implementations, Scells can be activated based on MAC CE. However, NTN transmissions do not yet support CA, and there is a lack of methods for activating CA Scells in NTN. For example, in NTN scenarios or NTN-TN coexistence and convergence scenarios, it is necessary to solve the problem of how to determine the timing relationship used to activate Scells and the related terminal behaviors.
[0202] Figure 2A is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 2A, a communication method according to an embodiment of the present disclosure includes:
[0203] In step S2101, network device 102 sends MAC CE to terminal 101.
[0204] In some embodiments, terminal 101 receives a MAC CE sent by network device 102.
[0205] In some embodiments, in an NTN scenario, network device 102 can pre-configure Scell for terminal 101. For example, before step S2101, network device 102 configures Scell for terminal 101 by sending RRC signaling.
[0206] In some embodiments, the MAC CE sent by the network device 102 can be used to activate or deactivate the Scell.
[0207] Optionally, the Scell activated or deactivated by MAC CE can be the Scell configured by network device 102 for the terminal.
[0208] Optionally, in the activation and deactivation of Scell, the configured Scell can be activated and deactivated in the following ways:
[0209] Method 1: Based on MAC CE used to activate or deactivate Scell;
[0210] Method 2: Configure a secondary cell deactivation timer (sCellDeactivationTimer) for each configured Scell (except for the Scell configured with PUCCH). When the secondary cell deactivation timer expires, the associated Scell will be deactivated.
[0211] Method 3: Configure the secondary cell state (sCellState) for each configured Scell. If configured, the relevant Scell will be activated when the Scell configuration is completed.
[0212] Here, step S2101 can correspond to activating or deactivating Scell using MAC CE.
[0213] [Corrected according to Rule 91 11.04.2025] Step S2102, Terminal 101 determines the effective time of MAC CE according to the first offset K.
[0214] In some embodiments, the first offset is the TA-related offset value in the NTN.
[0215] Optionally, the first offset K can be used to compensate for the offset caused by a large TA in the NTN, so as to more accurately determine the effective time of MAC CE.
[0216] Optionally, the first offset K in NTN can have different values.
[0217] Optionally, in NTN, if the number of base stations or satellites in network device 102 is different, the first offset K can have different values.
[0218] In some embodiments, the first offset K includes one of the following:
[0219] kmac, kmac is used to indicate the round-trip time (RTT) between the base station and the TA reference point in network device 102;
[0220] koffset, koffset is used to indicate the RTT between terminal 101 and the TA reference point;
[0221] koffset+kmac;
[0222] min(koffset, kmac); that is, the minimum value between koffset and kmac;
[0223] max(koffset, kma); that is, the maximum value among koffset and kma;
[0224] ktotal-koffset, ktotal is used to indicate the RTT of the transmission between terminal 101 and the base station via satellite;
[0225] This indicates the timing deviation between different base stations in network device 102, for example, It could be a time slot offset between different base stations.
[0226] Alternatively, network devices can send or transmit broadcast messages such as MIB, system information such as SIB, RRC messages, or DCI.
[0227] Optionally, the TA reference point can be a point or device between the base station and the satellite in network device 102. For example, the TA reference point can be a synchronization reference point. Terminal 101 and network device 102 can synchronize at the TA reference point. Based on the compensation of the first offset K, the effective time can be compensated to the timing on the base station side to ensure that the uplink and downlink are aligned at the base station side, and not just at the TA reference point side.
[0228] Optionally, X can be an integer or a fraction, and X can represent a slot or a millisecond (ms).
[0229] In one example, X takes the value a / m, where a and m are integers.
[0230] In this example, X can be an integer, such as X being 1, 2, 3, 4, or 5. Alternatively, X can be a fraction, such as X being 1 / 2, 3 / 2, or 5 / 2; or X can be a fraction less than 3, such as a / m = 3 / 2 = 1.5.
[0231] Alternatively, X may be delivered via the same broadcast message as ground communication.
[0232] Optionally, It is the number of time slots per subframe for the subcarrier spacing SCS configuration μ that carries the PUCCH transmission corresponding to HARQ-ACK for MAC CE.
[0233] Alternatively, kmac is indicated by network device 102, or kmac is 0.
[0234] Optionally, kmac is provided by K-Mac; if K-Mac is not provided, kmac is 0. K-Mac can be a field in the broadcast System Information Block (SIB) 19; or, K-Mac can be dynamically indicated via DCI.
[0235] In some embodiments, if the network device 102 includes a base station and a satellite, kmac is the RTT between the base station and the TA reference point. koffset is the RTT between the terminal 101 and the TA reference point. In this embodiment, kmac or koffset can have one value, and the value of the first offset K can be determined based on kmac and / or koffset.
[0236] In some embodiments, in single-site multi-satellite, multi-site single-satellite, or multi-site multi-satellite scenarios, kmac can be determined in the following ways:
[0237] If network device 102 includes a single base station and multiple satellites, different satellites can correspond to different kmacs. For example, with two satellites, the kmac corresponding to satellite 1 is kmac 1, and the kmac corresponding to satellite 2 is kmac 2. In this case, the kmac used to determine the first offset K is max(kmac 1, kmac 2), that is, kmac is the maximum value between kmac 1 and kmac 2.
[0238] Optionally, if network device 102 includes a single base station with three satellites, kmac is max(kmac 1, kmac 2, kmac 3). If network device 102 includes a single base station with N satellites, kmac is max(kmac 1, kmac 2, ..., kmac N).
[0239] Alternatively, if network device 102 includes multiple base stations on a single satellite, then there will be timing discrepancies between the multiple base stations or between different base stations. Taking two base stations as an example, the timing deviation between the two base stations is... At this point, the kmac used to determine the first offset K is...
[0240] Optionally, if network device 102 includes three base stations on a single satellite, the kmac is... This indicates the timing deviation between the first and second base stations among the three base stations in network device 102. This indicates the timing deviation between the second and third base stations out of the three base stations in network device 102. This indicates the timing deviation between the first and second base stations among the three base stations in network device 102.
[0241] Alternatively, if network device 102 includes multiple base stations and multiple satellites, there may be timing discrepancies between different base stations. Furthermore, different satellites can correspond to different kMACs. Taking two base stations and two satellites as an example, satellite 1 corresponds to kmac 1, and satellite 2 corresponds to kmac 2. In this case, the kmac used to determine the first offset K is... The value of q is in the range {1, -1}.
[0242] In some embodiments, in single-site multi-satellite, multi-site single-satellite, or multi-site multi-satellite scenarios, the koffset can be determined in the following ways:
[0243] If the network device 102 includes a single base station and multiple satellites, different satellites can correspond to different koffsets. For example, taking two satellites as an example, the koffset corresponding to satellite 1 is koffset1, and the koffset corresponding to satellite 2 is koffset2. In this case, the koffset used to determine the first offset K is max(koffset 1, koffset 2).
[0244] Alternatively, if network device 102 includes multiple base stations on a single satellite, then there will be timing discrepancies between the multiple base stations or between different base stations. Taking two base stations as an example, the timing deviation between the two base stations is... At this point, the koffset used to determine the first offset K is...
[0245] Alternatively, if network device 102 includes multiple base stations and multiple satellites, there may be timing discrepancies between different base stations. Furthermore, different satellites can correspond to different koffsets. Taking two base stations and two satellites as an example, satellite 1 corresponds to koffset 1, and satellite 2 corresponds to koffset 2. In this case, the koffset used to determine the first offset K is... The value of q is in the range {1, -1}.
[0246] Optionally, the above description of the number of satellites or base stations is for illustrative purposes only. When there are more base stations or satellites, the method for determining koffset can be found in the aforementioned implementation of kmac.
[0247] In some embodiments, the value of q is in the range {1, -1}, which can be a range determined based on the protocol definition. For example, the value of q satisfies the following rule shown in [TS 38.211]:
[0248] In a CA, transmissions from multiple cells can be aggregated. Unless otherwise stated, the following description applies to each serving cell in a CA:
[0249] For CAs of cells with misaligned frame boundaries, the slot offset between the primary cell (Pcell) or primary secondary cell (PScell) and the Scell is... Determined by the higher-level parameter ca-SlotOffset of Scell. μ offset It is the maximum value of the lowest subcarrier spacing configuration given by the high-level parameter scs-SpecificCarrierList configured for PCell, PScell, and Scell respectively.
[0250] Time slot offset Satisfy the following condition: When the lowest subcarrier spacing configured for a cell is μ=2 for both cells or μ=3 for both cells, the start of slot 0 at point A of the cell with the lower frequency is in the same time slot as the other cell. The points begin to overlap, where if the frequency of point A in PCell or PScell is lower than the frequency of point A in Scell, then q = -1; otherwise, q = 1.
[0251] Otherwise, for the cell with the lower subcarrier spacing among the two cells configured by the higher-layer parameter scs-SpecificCarrierList, the slot 0 begins, or if the two cells Pcell or PSCell have the same minimum subcarrier spacing configured by the higher-layer parameter scs-SpecificCarrierList, the slot with the other cell begins. The starting conditions are consistent, wherein if the minimum subcarrier spacing configuration given by the scs-SpecificCarrierList of the Pcell or PScell is less than or equal to the minimum subcarrier spacing given by the scs-SpecificCarrierList of the Scell, then q = -1; otherwise, q = 1. If the minimum subcarrier spacing given by the scs-SpecificCarrierList of the PCell / PSCell is less than or equal to the minimum subcarrier spacing of the SCell, then q = -1; otherwise, q = 1.
[0252] In some embodiments, the effective time of the MAC CE determined based on the first offset K described above is one of the following:
[0253] In time (n+k+first offset K); for example, if the first offset K is kmac, the effective time of MAC CE is (n+k+kmac).
[0254] In time (n+k);
[0255] It occurs after time (n+k+first offset K); for example, the effective time of MAC CE is after (n+k+kmac).
[0256] After time (n+k);
[0257] Where n is the time when terminal 101 receives MAC CE, and k is a value determined based on the protocol.
[0258] Optionally, the aforementioned n or effective time can be in units of time slots, symbols, or milliseconds. Some embodiments of this disclosure are described in units of time slots. For example, terminal 101 receives a MAC CE for activating or deactivating an Scell in slot n. This MAC CE can be effective in slot (n+k+kmac). The effectiveness of this MAC CE indicates that the activation or deactivation instruction it carries is effective, that is, the Scell will be activated or deactivated.
[0259] In some embodiments, k satisfies one of the following:
[0260] Where k1 is the time related to the HARQ-ACK information corresponding to the MAC CE (e.g., the time of HARQ-ACK transmission), and X is an integer or fraction. It is the number of time slots per subframe for the SCS configuration μ that carries the PUCCH transmission of HARQ-ACK.
[0261] Optionally, HARQ-ACK can be carried by PUCCH.
[0262] Optionally, if the effective time of MAC CE is after time (n+k+first offset K) or after time (n+k+first offset K), then k satisfies At this point, the first offset K is compensated based on n+k.
[0263] Optionally, if the effective time of MAC CE is at time (n+k) or after time (n+k), then k satisfies At this point, the first offset K is included in k, and n is compensated for.
[0264] Optionally, the value of X can be determined with reference to the description in the foregoing embodiments.
[0265] Optionally, the value of the first offset K can be determined with reference to the description in the foregoing embodiments. For example, the first offset K can be kmac, or determined based on kmac and koffset. The method of determining the value of the first offset K is different when the number of satellites or base stations in the network device 102 is different.
[0266] Optionally, k1 is indicated by the "PDSCH-to-HARQ_feedback timing indicator" field in the DCI format of the scheduled PDSCH. PDCSH can be used to carry the aforementioned MAC CE.
[0267] In step S2103, terminal 101 performs Scell activation-related operations.
[0268] In some embodiments, after the MAC CE for activating Scell takes effect, the terminal 101 performs Scell activation-related operations.
[0269] In some embodiments, terminal 101 performs Scell activation-related operations after (n+k+first offset K) or after n+k and before Tm.
[0270] Optionally, Tm is a value determined based on the protocol. Specifically, Tm can be a value determined based on TS 38.331, for example, Tm can be the minimum requirement defined in [12, TS 38.331]. Alternatively, Tm can be a value determined based on TS 38.133, for example, Tm can be the minimum requirement defined in [10, TS 38.133].
[0271] In one example, referring to the time slot used for PUCCH transmission, if the terminal receives the MAC CE for activating Scell in time slot n, the terminal performs the Scell activation related operation after (n+k+kmac) and before Tm.
[0272] Optionally, for the terminal, the Scell activation-related operations, or the operations that its MAC entity can perform on each configured Scell, include:
[0273] 1) If a certain Scell has its secondary cell state (sCellState) set to be activated when the secondary cell configuration is completed, or receives a MAC CE to activate or deactivate the Scell;
[0274] 2) If the Scell is in a deactivated state before receiving the MAC CE; or,
[0275] 2) If Scell sets sCellState to be activated when Scell configuration is complete;
[0276] 3) If the first active downlink bandwidth part identifier (firstActiveDownlinkBWP-Id) is not set to the dormant bandwidth part (BWP);
[0277] 4) Activate Scell and perform Scell activation-related operations. Optionally, the activation timing can refer to the timing description in the NTN scenario in the aforementioned embodiments, or refer to the timing defined for MAC CE activation in TS 38.213[6] and the timing defined for Scell activation to activate Scell. Among them, Scell activation-related operations include:
[0278] Sounding Reference Signal (SRS) transmission is performed on the Scell;
[0279] Report a CSI to Scell;
[0280] Perform PDCCH monitoring on Scell;
[0281] PDCCH monitoring was performed on Scell.
[0282] If configured, PUCCH transmission will be performed on the Scell.
[0283] 3) Otherwise (e.g., if firstActiveDownlinkBWP-Id is set to a dormant BWP), and if the serving cell's bandwidth portion inactive timer (bwp-InactivityTimer) is running, then stop bwp-InactivityTimer.
[0284] 3) Activate the DL (Downlink, DL) BWP and Uplink (UL) BWP respectively, indicated by firstActiveDownlinkBWP-Id and firstActiveUplinkBWP-Id.
[0285] 2) If the active DL BWP is not a dormant BWP, then perform the following operations:
[0286] Based on the stored configuration (if any), initialize or reinitialize the pending configured uplink grant (Configured Grant Type 1) associated with the secondary cell (Scell), and can begin on the specified symbol.
[0287] Trigger Power Headroom Report (PHR).
[0288] In step S2104, terminal 101 executes the special behavior in Scell activation.
[0289] In some embodiments, special behavior refers to behavior other than the operation in the embodiment of step S2103.
[0290] In some embodiments, steps S2103 and S2104 may be performed in parallel, with one being selected based on actual needs.
[0291] In one embodiment, the specific action includes: terminal 101 sending a CSI report for activating the serving cell to network device 102.
[0292] Optionally, network device 102 receives the CSI report of the activated serving cell sent by terminal 101.
[0293] Optionally, if the MAC CE takes effect at (n+k+first offset K) or n+k, terminal 101 sends a CSI report for activating the serving cell to network device 102 in time slot n+k or n+k+first offset K. For example, if the terminal receives the aforementioned MAC CE for activating the Scell in time slot n, the terminal sends a CSI report for activating the serving cell or performs a CSI reporting for activating the serving cell in time slot (n+k+kmac).
[0294] In another embodiment, the special behavior includes: terminal 101 performing actions related to the secondary cell deactivation timer.
[0295] Optionally, when the MAC CE takes effect at (n+k+first offset K) or n+k, terminal 101 performs actions related to the secondary cell deactivation timer in time slot n+k or n+k+first offset K. For example, if the terminal receives the MAC CE for activating the Scell in time slot n, the terminal applies actions related to sCellDeactivationTimer in time slot (n+k+kmac). Optionally, actions related to sCellDeactivationTimer can be found in [11, TS 38.321].
[0296] Optionally, the secondary cell can be started or restarted to deactivate the timer.
[0297] Optionally, if the PDCCH on the active Scell indicates an uplink grant or downlink scheduling allocation; or if the PDCCH on the serving cell scheduling the active Scell indicates an uplink grant or downlink scheduling allocation for the active Scell; or if a Media Access Control Protocol Data Unit (PDU) is transmitted in a configured uplink grant and no Listen Before Talk (LBT) failure indication is received from the lower layer; or if a MAC PDU is received in a configured downlink scheduling allocation, then the secondary cell deactivation timer is restarted.
[0298] In another embodiment, the special behavior includes: terminal 101 executing a CSI report corresponding to an inactive serving cell in (n+k+first offset K) or n+k.
[0299] Optionally, if the MAC CE takes effect at (n+k + first offset K) or n+k, terminal 101 executes the CSI report corresponding to the inactive serving cell in (n+k + first offset K) or n+k in the first time slot after (n+k + first offset K) or n+k when the serving cell is activated. For example, if the terminal receives the aforementioned MAC CE for activating the Scell in time slot n, then the terminal applies the CSI report corresponding to the inactive serving cell in (n+k) in the first time slot after (n+k + kmac).
[0300] In step S2105, terminal 101 performs uplink transmission.
[0301] Optionally, the uplink transmissions may include: uplink transmissions scheduled by downlink control, and / or uplink transmission resources activated by downlink control.
[0302] Optionally, the aforementioned MAC CE can also be used to activate uplink transmission resources. Alternatively, network device 102 may separately send signaling for downlink control scheduling or downlink control activation.
[0303] In some embodiments, steps S2105 and S2104 or S2103 may be performed in parallel, with the determination of whether to perform the step based on the actual communication between the terminal and the network device.
[0304] In some embodiments, terminal 101 performs uplink transmission after (n+k+first offset K) or after n+k and before Tm.
[0305] For example, assuming terminal 101 receives a MAC CE in slot n with a first offset of koffset, and the MAC CE can be used to activate the Scell and uplink transmission resources, then terminal 101 can perform uplink transmission after (n+k+koffset) and before Tm. Tm can be referred to the description in the foregoing embodiments.
[0306] In some embodiments, the uplink transmission includes at least one of the following:
[0307] PUSCH transmission;
[0308] Transmission of HARQ-ACK mixed in PUCCH;
[0309] CSI reference resource timing;
[0310] Aperiodic SRS transmission.
[0311] In some embodiments, PUSCH transmission includes at least one of the following:
[0312] DCI scheduled PUSCH transmission, which includes the PUSCH carrying CSI;
[0313] The timing of the PUSCH for the Random Access Response (RAR) grant scheduled PUSCH.
[0314] In one example, referring to the time slot used for PUCCH transmission, when terminal 101 receives an activation command transmitted in PDSCH in slot n, such as the aforementioned MAC CE, terminal 101 can perform uplink transmission after (n+k+koffset) and before Tm. In other words, the terminal uses the corresponding action in [11, TS 38.321] for uplink transmission. Uplink transmission includes PUSCH transmission scheduled by DCI (including CSI on PUSCH), timing of PUSCH scheduled by RAR grant, transmission of HARQ-ACK on PUCCH, CSI reference resource timing, or aperiodic SRS transmission.
[0315] In step S2106, terminal 101 executes the behavior corresponding to the downlink transmission feature.
[0316] In some embodiments, the MAC CE is also used to activate or deactivate downlink transmission features. The MAC CE takes effect after the network device 102 receives the HARQ-ACK corresponding to the MAC CE.
[0317] Optionally, terminal 101 sends the HARQ-ACK corresponding to the MAC CE in slot n', and the MAC CE can be sent in slot n'. It will then take effect. The first offset K can be found in the description of the preceding embodiments, such as kmac, and X can be found in the description of the preceding embodiments, such as an integer or a fraction. For example, MAC CE can be... It will take effect later.
[0318] Optionally, referring to Figure 1E, the effective time of this embodiment can refer to position 2 in the figure, where L = X and the preset delay = K. Wherein, if the NTN downlink MAC CE command needs to ensure that the downlink transmission characteristics related to MAC CE (e.g., activation-related) take effect after the base station receives the HARQ-ACK feedback for MAC CE on the uplink transmission, the timing relationship needs to compensate for the RTT from the base station to the TA reference point, such as kmac.
[0319] In some embodiments, after MAC CE takes effect, terminal 101 performs the behavior corresponding to the downlink transmission feature.
[0320] Optionally, downlink transmission features may refer to TCI state activated by MAC CE, CSI report transmission, CSI resource determination, etc. These downlink transmission features take effect at the effective time of the MAC CE. For example, TCI state activated by the MAC CE can begin to be applied after the MAC CE takes effect.
[0321] Optionally, the behavior corresponding to the downlink transmission characteristics includes at least one of the following:
[0322] from At the start of the next time slot, a CSI report is sent to network device 102;
[0323] from Starting from the first time slot thereafter, CSI-RS resource configuration is used to transmit CSI-RS or CSI-IM resource configuration is used to transmit CSI-IM for CSI interference measurement.
[0324] from Starting from the first time slot thereafter, transmission based on deactivating CSI-RS or CSI-IM resource sets will cease;
[0325] from Starting from the first time slot thereafter, the action corresponding to the zero-power reference signal ZP CSI-RS resource is executed;
[0326] from Starting from the first time slot thereafter, the application transmit configuration indicates the TCI status.
[0327] Optionally, n' is the time when the terminal sends the HARQ-ACK.
[0328] Optionally, μ K It is a subcarrier spacing configuration parameter related to K, and for frequency range 1 and frequency range 2 (FR2-NTN) applied to NTN, μ K The value of can be 0.
[0329] In some embodiments, terminal 101 from At the start of the next time slot, a CSI report is sent to network device 102.
[0330] Optionally, network device 102 can use the CSI request field in DCI to trigger CSI reporting.
[0331] Optionally, CSI is not requested when all bits of the CSI request field of the DCI are set to zero.
[0332] Optionally, when the number of CSI trigger states configured in the Channel State Information Aperiodic TriggerStateList (CSI-AperiodicTriggerStateList) is greater than Time (of which) (This refers to the number of bits in the CSI request field of the DCI). Terminal 101 will receive a subselection indication, which is used to select the maximum number of bits. Each trigger state is mapped to a code point in the CSI request field of the DCI. Partial selection indications can be found in [10, TS 38.321], N TS Configured by the high-level parameter reportTriggerSize, N TS ∈{0, 1, 2, 3, 4, 5, 6}. When terminal 101 transmits a PUCCH with HARQ-ACK information in time slot n' corresponding to the PDSCH carrying the partial selection indication, terminal 101 from... like The first time slot thereafter applies the corresponding actions from [10, TS 38.321], such as the assumption of mapping the selected CSI trigger state to the code point of the CSI request field in the DCI. μ is the SCS configuration of PUCCH, μ kmac It is the subcarrier spacing configuration of the kmac of NTN in frequency ranges FR1 and FR2.
[0333] Optionally, for terminal 101 configured with CSI resource settings, the higher-level parameter resourceType is set to "semiPersistent".
[0334] In some embodiments, terminal 101 from Starting from the first time slot thereafter, CSI-RS resource configuration is used to transmit CSI-RS or CSI-IM resource configuration is used to transmit CSI-IM for CSI interference measurement.
[0335] Optionally, when terminal 101 receives an activation command such as MAC CE, the activation command is used to activate the following associated with the configured CSI resource sets: the Channel State Information Reference Signal (CSI-RS) resource set for channel measurement, and the CSI Interference Measurement Resource (CSI-IM) or Non-Zero Power CSI-RS (NZP CSI-RS) resource set for interference measurement; and when terminal 101 transmits a PUCCH containing HARQ-ACK information in time slot n', the HARQ-ACK corresponding to the PDSCH carrying the activation command, terminal 101... like The first time slot thereafter applies the corresponding actions in [10, TS 38.321], such as the assumptions for CSI-IM transport corresponding to the CSI-RS or CSI-IM resource configuration corresponding to the configured CSI-RS (including the quasi-colocation (QCL) assumptions provided by the Transport Configuration Indicator State (TCI-State) reference list, one for each active resource).
[0336] Optionally, if a TCI-State in the list has its quasi-co-location type (qcl-Type) set to "typeD" as a reference signal (RS), then the RS can be a synchronization signal or a physical broadcast channel block (SS or PBCH block), a periodic or semi-persistent CSI-RS located in the same or different carrier components (CC) or downlink bandwidth portions (DL BWP).
[0337] In some embodiments, terminal 101 from Starting from the first time slot thereafter, transmissions based on deactivated CSI-RS or CSI-IM resource sets cease.
[0338] Optionally, when terminal 101 receives a deactivation command (such as the MAC CE described above) for an activated CSI-RS or CSI-IM resource set associated with the configured CSI resource settings, and when terminal 101 transmits a PUCCH with HARQ-ACK information in time slot n' corresponding to the PDSCH carrying the deactivation command, terminal 101... like The first time slot thereafter applies the corresponding actions in [10, TS 38.321], such as the assumption that CSI-RS or CSI-IM transmissions corresponding to the deactivated CSI-RS or CSI-IM resource set will be stopped.
[0339] In some embodiments, terminal 101 from Starting from the first time slot thereafter, the action corresponding to the zero-power reference signal ZP CSI-RS resource is executed.
[0340] Optionally, terminal 101 is configured with a semi-persistent ZP-CSI-RS-ResourceSet list provided by the higher-level parameter sp-ZP-CSI-RS-resourceststoaddmodlist.
[0341] Optionally, when terminal 101 transmits a PUCCH containing HARQ-ACK information in time slot n', and this HARQ-ACK corresponds to a PDSCH carrying a resource activation command for Zero Power Channel State Information Reference Signal (ZP CSI-RS) (such as MAC CE), terminal 101... like The first time slot thereafter applies the corresponding action in [10,TS 38.321], such as the assumption of PDSCH resource element (RE) mapping for the activated ZP CSI-RS resource.
[0342] Optionally, when terminal 101 transmits a PUCCH containing HARQ-ACK information in time slot n', and this HARQ-ACK corresponds to a PDSCH carrying a resource activation command for Zero Power Channel State Information Reference Signal (ZP CSI-RS) (such as MAC CE), terminal 101... like The first time slot thereafter applies the corresponding action in [10,TS 38.321], such as the assumption regarding the mapping of PDSCH resource elements (REs) corresponding to the deactivated ZP CSI-RS resources.
[0343] In some embodiments, terminal 101 from Starting from the first time slot thereafter, the application transmit configuration indicates the TCI status.
[0344] Optionally, when terminal 101 sends a PUCCH containing HARQ-ACK information in time slot n', and the HARQ-ACK corresponds to the PDSCH carrying the activation command, terminal 101... like The mapping relationship between the TCI status and code points indicated in the DCI field "Transmission Configuration Indication" begins to be applied in the first time slot thereafter.
[0345] Optionally, if the configuration parameter tci-PresentInDCI associated with TCI is set to "Enabled", or "tci-PresentInDCI-1-2" is configured for scheduling the control resource set (CORESET) of PDSCH, and where applicable, after receiving the initial higher-layer configuration of the TCI state and before receiving the activation command, the time offset between the downlink DCI and the corresponding PDSCH is equal to or greater than the QCL duration (timeDurationForQCL).
[0346] Optionally, except during the random access procedure for LTM handover triggered at the RACH-based lower layer (if applicable), terminal 101 assumes that the demodulation reference signal (DM-RS) of the serving cell's PDSCH port is quasi-co-located with the reference signal in the candidate TCI-State indicated in the LTM cell handover command MAC CE. Otherwise, terminal 101 may assume that the DM-RS port of the serving cell's PDSCH is quasi-co-located with the synchronization signal or physical broadcast channel block (SS or PBCH block) determined during the initial access procedure when the quasi-co-location type (qcl-Type) is set to "typeA", and, where applicable, also when the quasi-co-location type is set to "typeD".
[0347] In some embodiments, the names of information, etc., are not limited to the names described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.
[0348] In some embodiments, the terms "codebook," "codeword," and "precoding matrix" can be used interchangeably. For example, a codebook can be a collection of one or more codewords / precoding matrices.
[0349] In some embodiments, the terms "uplink", "uplink", and "physical uplink" can be used interchangeably, as can the terms "downlink", "downlink", and "physical downlink", as well as the terms "sidelink", "sidelink", "sidelink communication", "sidelink communication", "direct connection", "direct link", "direct communication", and "direct link communication".
[0350] In some embodiments, the terms “downlink control information (DCI),” “downlink (DL) assignment,” “DL DCI,” “uplink (UL) grant,” and “UL DCI” can be used interchangeably.
[0351] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" can be used interchangeably, as can terms such as "physical uplink shared channel (PUSCH)" and "UL data".
[0352] In some embodiments, the terms “radio”, “wireless”, “radio access network (RAN)”, “access network (AN)”, and “RAN-based” can be used interchangeably.
[0353] In some embodiments, terms such as “moment,” “point in time,” “time,” and “time location” can be used interchangeably, as can terms such as “duration,” “segment,” “time window,” “window,” and “time.”
[0354] In some embodiments, the terms "component carrier (CC)," "cell," "frequency carrier," and "carrier frequency" can be used interchangeably.
[0355] In some embodiments, the terms “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.
[0356] In some embodiments, the terms “frame”, “radio frame”, “subframe”, “slot”, “sub-slot”, “mini-slot”, “symbol”, “symbol”, and “transmission time interval (TTI)” can be used interchangeably.
[0357] In some embodiments, “get,” “obtain,” “receive,” “transmit,” “bidirectional transmission,” and “send and / or receive” can be used interchangeably and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining through self-processing, or autonomous implementation, among other meanings.
[0358] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transmit,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.
[0359] In some embodiments, terms such as "certain," "preset," "default," "set," "indicated," "a certain," "any," and "first" can be used interchangeably. "Certain A," "preset A," "default A," "set A," "indicated A," "a certain A," "any A," and "first A" can be interpreted as A pre-defined in a protocol or the like, or as A obtained through setting, configuration, or instruction, or as specific A, a certain A, any A, or first A, but are not limited thereto.
[0360] In some embodiments, if an arrow in the interaction diagram representing the sending of information, signaling, etc., from one subject to another passes through other subjects, it can be interpreted as the message being forwarded from one subject to another via other subjects, or it can be interpreted as the message being sent from one subject to another without passing through other subjects. For example, step S2101.
[0361] The communication method involved in the embodiments of this disclosure may include at least one of steps S2101 to S2106. For example, steps S2101 and S2102 may be implemented as independent embodiments, steps S2101 to S2103 may be implemented as independent embodiments, steps S2101, S2102 and S2104 may be implemented as independent embodiments, steps S2101, S2102 and S2105 may be implemented as independent embodiments, and steps S2101, S2102 and S2106 may be implemented as independent embodiments, but are not limited thereto.
[0362] In some embodiments, at least one of steps S2103 to S2106 is optional, and one or more of these steps may be omitted or substituted in different embodiments. For example, one of steps S2103, S2104, S2105, and S2106 may be performed.
[0363] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.
[0364] Figure 2B is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 2B, a communication method according to an embodiment of the present disclosure includes:
[0365] In step S2201, network device 102 sends MAC CE to terminal 101.
[0366] In some embodiments, the implementation of step S2201 can be referred to the implementation of step S2101 in FIG2A, and will not be repeated here.
[0367] In step S2202, terminal 101 determines the effective time of MAC CE based on the first offset K.
[0368] In some embodiments, the implementation of step S2202 can be referred to the implementation of step S2102 in FIG2A, and will not be repeated here.
[0369] In step S2203, terminal 101 performs the Scell deactivation related operation.
[0370] In some embodiments, after the MAC CE for deactivating Scell takes effect, the terminal 101 performs Scell deactivation related operations.
[0371] In some embodiments, terminal 101 performs Scell deactivation related operations before Tm.
[0372] Optionally, if MAC CE is used to deactivate Scell, terminal 101 performs the Scell deactivation related operation before Tm.
[0373] Optionally, Tm is a value determined based on the protocol. Specifically, Tm can be a value determined based on TS 38.331, for example, Tm can be the minimum requirement defined in [12, TS 38.331]. Alternatively, Tm can be a value determined based on TS 38.133, for example, Tm can be the minimum requirement defined in [10, TS 38.133].
[0374] In some embodiments, terminal 101 performs the Scell deactivation operation after (n+k+first offset K) or after n+k and before Tm. For example, referring to a time slot used for PUCCH transmission, if the terminal receives the aforementioned MAC CE for deactivating Scell in time slot n, the terminal performs the Scell deactivation operation after (n+k+kmac) and before Tm.
[0375] In some embodiments, in addition to deactivating the Scell via signaling such as MAC CE, the Scell can also determine whether to deactivate via an associated timer.
[0376] Optionally, if the deactivation timer associated with the Scell expires or times out at time n (e.g., slot n), terminal 101 performs the Scell deactivation-related operation after (n+k+first offset K) or after n+k and before Tm. In this case, MAC CE signaling for deactivation may not be sent.
[0377] In one example, referring to the time slot used for PUCCH transmission, if terminal 101 receives a deactivation command for Scell, and the deactivation of Scell ends in time slot n, in addition to performing actions related to CSI reporting for activating the serving cell, terminal 101 performs Scell deactivation related operations after (n+k+kmac) and before Tm.
[0378] In some embodiments, if a MAC CE is received to deactivate the Scell, or if a deactivation timer associated with an activated Scell expires, the Scell deactivation operation is performed.
[0379] Optionally, for the terminal, the Scell deactivation related operations include, or rather, the operations that its MAC entity can perform on each configured Scell, including:
[0380] 1) If a MAC CE for deactivating the Scell is received, or if the sCellDeactivationTimer associated with activating the Scell expires, then
[0381] 2) Deactivate Scell based on the timing described in the foregoing embodiments;
[0382] 2) Stop the deactivation timer associated with Scell;
[0383] Stop the bandwidth-part inactive timer (bwp-InactivityTimer) associated with Scell;
[0384] Deactivate any activated BWPs associated with Scell;
[0385] Clear any configured downlink scheduling assignments and any Configured Grant Type 2 associated with Scell;
[0386] Remove any PUSCH resources associated with Scell used for semi-continuous CSI reporting;
[0387] Suspend any Configured Grant Type 1 associated with Scell;
[0388] Clear or flush all HARQ buffers associated with the Scell;
[0389] Cancels any LBT failures that triggered consistent LBTs in Scell (if any).
[0390] In some embodiments, if the Scell is deactivated, the following operations are performed, i.e., Scell deactivation related operations include:
[0391] SRS is not transmitted on this Scell;
[0392] Do not report CSI for this Scell;
[0393] Transmissions will not be performed on the Uplink Shared Channel (UL-SCH) of this Scell;
[0394] Transmissions will not be made on the Random Access Channel (RACH) of this Scell;
[0395] Do not monitor PDCCH on this Scell;
[0396] PDCCH is not monitored for this Scell.
[0397] PUCCH is not transmitted on this Scell.
[0398] Optionally, the HARQ feedback of the MAC PDU containing the MAC CE for secondary cell activation or deactivation should not be affected by the interruption of Pcell, PScell, and secondary cell configured with PUCCH due to secondary cell activation or deactivation.
[0399] Optionally, when an Scell is deactivated, if a random access procedure is in progress on that Scell, the random access procedure will be aborted.
[0400] In step S2204, terminal 101 executes the special behavior in Scell deactivation.
[0401] In some embodiments, special behavior refers to behavior other than the operation in the embodiment of step S2203.
[0402] In some embodiments, steps S2203 and S2204 may be performed in parallel, with one being selected based on actual needs.
[0403] In one embodiment, the specific action includes: terminal 101 sending a CSI report for activating the serving cell to network device 102.
[0404] Optionally, the deactivation timer associated with Scell expires at time n. In the first time slot thereafter, terminal 101 sends a CSI report for activating the serving cell to network device 102.
[0405] Optionally, K is the first offset, and the deactivation timer associated with Scell expires at time n. like In the first time slot thereafter, terminal 101 sends a CSI report for activating the serving cell to network device 102.
[0406] In another embodiment, the special behavior includes: terminal 101 performing actions related to activating the serving cell's CSI reporting.
[0407] Optionally, when terminal 101 receives a MAC CE for deactivating Scell at time n, terminal 101 performs CSI reporting related actions for activating the serving cell at (n+k+first offset K) or n+k. For example, at (n+k+kmac), actions related to CSI reporting for activating the serving cell are applied.
[0408] The communication method involved in the embodiments of this disclosure may include at least one of steps S2201 to S2204. For example, steps S2201 and S2202 may be implemented as independent embodiments, steps S2201 to S2203 may be implemented as independent embodiments, and steps S2201, S2202 and S2204 may be implemented as independent embodiments, but are not limited thereto.
[0409] In some embodiments, at least one of steps S2203 to S2204 is optional, and one or more of these steps may be omitted or substituted in different embodiments.
[0410] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.
[0411] Figure 3A is an interactive schematic diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 3A, a communication method according to an embodiment of the present disclosure includes:
[0412] In step S3101, network device 102 sends MAC CE to terminal 101.
[0413] In some embodiments, the implementation of step S3101 can be found in the implementation of step S2101 in FIG2A.
[0414] In step S3102, terminal 101 determines the effective time of MAC CE based on the first offset K.
[0415] In some embodiments, the implementation of step S3102 can be found in the implementation of step S2102 in FIG2A.
[0416] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.
[0417] Figure 3B is an interactive schematic diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 3B, a communication method according to an embodiment of the present disclosure includes:
[0418] In step S3201, network device 102 sends MAC CE to terminal 101.
[0419] In some embodiments, the implementation of step S3201 can be referred to the implementation of step S2101 in FIG2A.
[0420] In step S3202, terminal 101 determines the effective time of MAC CE based on the first offset K.
[0421] In some embodiments, the implementation of step S3202 can be found in the implementation of step S2102 in FIG2A.
[0422] In step S3203, terminal 101 performs Scell activation-related operations.
[0423] In some embodiments, the implementation of step S3203 can be found in the implementation of step S2103 in FIG2A.
[0424] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.
[0425] Figure 3C is an interactive schematic diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 3C, a communication method according to an embodiment of the present disclosure includes:
[0426] In step S3301, network device 102 sends MAC CE to terminal 101.
[0427] In some embodiments, the implementation of step S3301 can be referred to the implementation of step S2101 in FIG2A.
[0428] In step S3302, terminal 101 determines the effective time of MAC CE based on the first offset K.
[0429] In some embodiments, the implementation of step S3302 can be referred to the implementation of step S2102 in FIG2A.
[0430] In step S3303, terminal 101 performs the Scell deactivation related operation.
[0431] In some embodiments, the implementation of step S3303 can be found in the implementation of step S2203 in FIG2B.
[0432] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.
[0433] Figure 3D is an interactive schematic diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 3D, a communication method according to an embodiment of the present disclosure includes:
[0434] In step S3401, network device 102 sends MAC CE to terminal 101.
[0435] In some embodiments, the implementation of step S3401 can be found in the implementation of step S2101 in FIG2A.
[0436] In step S3402, terminal 101 determines the effective time of MAC CE based on the first offset K.
[0437] In some embodiments, the implementation of step S3402 can be referred to the implementation of step S2102 in FIG2A.
[0438] In step S3403, terminal 101 performs uplink transmission.
[0439] In some embodiments, the implementation of step S3403 can be referred to the implementation of step S2107 in FIG2A.
[0440] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.
[0441] Figure 3E is an interactive schematic diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 3E, a communication method according to an embodiment of the present disclosure includes:
[0442] In step S3501, network device 102 sends MAC CE to terminal 101.
[0443] In some embodiments, the implementation of step S3501 can be referred to the implementation of step S2101 in FIG2A.
[0444] In step S3502, terminal 101 determines the effective time of MAC CE based on the first offset K.
[0445] In some embodiments, the implementation of step S3502 can be referred to the implementation of step S2102 in FIG2A.
[0446] In step S3503, terminal 101 executes the behavior corresponding to the downlink transmission feature.
[0447] In some embodiments, the implementation of step S3503 can be referred to the implementation of step S2108 in FIG2A.
[0448] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.
[0449] In the method provided in this disclosure, for the MAC CE used to activate or deactivate Scells, a first offset K related to the TA in NTN is introduced. The effective time of the MAC CE is determined according to the first offset K, so that the effective time of the MAC CE is applicable to NTN. In NTN scenarios, a reasonable Scell activation or deactivation sequence can be determined, or in NTN and TN coexistence and fusion scenarios, the activation or deactivation of Scells has a unified and applicable timing relationship. To facilitate understanding of the embodiments of this disclosure, some embodiments are listed below:
[0450] Example 1: Typical effective time for MAC-CE activation of Scell command
[0451] In terms of timing, except for some special cases, the terminal will execute the process after Scell activation as given in TS 38.321 (corresponding to the Scell activation-related operations in step S2103), such as CSI-RS reception and SRS transmission. For example, the activated process may need to compensate for the TA-related characteristic value koffset / kmac of NTN. In this embodiment, the compensation amount of kmac needs to be specified for the value of k or the value of n+k.
[0452] Example 1-1
[0453] Referring to the time slot used for PUCCH transmission, when the terminal receives the activation command for activating the secondary cell carried in the PDSCH in time slot n, the terminal applies the corresponding action in [11, TS 38.321] after (n+k+kmac) and before Tm (corresponding to the Scell activation related operation in step S2103).
[0454] Examples 1-2
[0455] The value of k is Where k1 is the number of time slots for PUCCH transmissions containing HARQ-ACK information for PDSCH reception, and as described in sub-clause 9.2.3, k1 is indicated by the PDSCH-to-HARQ_feedback timing indicator field in the DCI format for scheduling PDSCH reception. The number of time slots per subframe in the SCS configuration μ of PUCCH transmission.
[0456] Replace the above kmac with any of the following variants:
[0457] koffset;
[0458] koffset+kmac;
[0459] min / max(koffset,kmac);
[0460] ktotal-koffset;
[0461] for And X, where X is in slots or milliseconds (ms), and X is an integer. It is transmitted via the same broadcast message as ground communication.
[0462] Optionally, kmac is provided by K-Mac; if K-Mac is not provided, then kmac = 0.
[0463] Example 2: Typical effective time for MAC-CE to deactivate Scell command
[0464] Example 2-1
[0465] In conjunction with the activation command in Example 1, this example adds an earlier lower limit to the effective time.
[0466] Referring to the time slot used for PUCCH transmission, if the terminal receives a deactivation command for the secondary cell in time slot n, then after (n+k+kmac) and before Tm, the terminal applies the corresponding action in [11, TS 38.321] other than the action related to the CSI report on the activated serving cell applied in time slot (n+k+kmac), which corresponds to the Scell deactivation related operation in step S2203.
[0467] Optionally, a variant of kmac can be found in Example 1.
[0468] Example 3: Special Case Regarding the Effective Time of MAC-CE Activation of Scell Command
[0469] Special Case 1: Operations related to activating CSI reporting on the serving cell in time slot (n+k+kmac).
[0470] Special Case 2: Operations related to the secondary cell deactivation timer (sCellDeactivationTimer) associated with SCell in [11, TS 38.321].
[0471] Optionally, the operations shown in Special Cases 1 and 2 above can be applied to time slot n+k.
[0472] Optionally, in the case of Special Case 1 or Special Case 2, the MAC CE activation time of Scell is in slot n+k+kmac or n+k.
[0473] Special Case 3: Operations related to CSI reporting on inactive serving cells in slot (n+k+kmac).
[0474] Optionally, the operation shown in Special Case 3 can be applied to the first time slot after the serving cell activation time slot (n+k+kmac).
[0475] Optionally, in Special Case 3, the MAC CE activation time of Scell is the first time slot after time slot n+k+kmac or n+k.
[0476] Optionally, a variant of kmac can be found in Example 1.
[0477] Example 4: Special Case Regarding the Effective Time of MAC-CE Deactivation of Scell Command
[0478] Referring to the time slot used for PUCCH transmission, if the terminal receives a deactivation command for the secondary cell in time slot n, then before Tm, in addition to the action related to the CSI report on the active serving cell applied in time slot (n+k+kmac), the terminal applies the corresponding action in [11, TS 38.321] (corresponding to the Scell deactivation related operation in step S2203).
[0479] Optionally, a variant of kmac can be found in Example 1.
[0480] Example 5: Uplink / Downlink Decoupling
[0481] Example 5-1: Downlink control scheduling / activation of uplink transmission (resources), using koffset.
[0482] Referring to the time slot used for PUCCH transmission, when the terminal receives the activation command of the secondary cell in the PDSCH in slot n, the terminal applies the corresponding actions in [11, TS 38.321] to the UL transmission after (n+k+koffset) and before Tm, including the PUSCH transmission scheduled by DCI (including CSI on PUSCH), the timing of PUSCH scheduled by RAR grant, the transmission of HARQ-ACK on PUCCH, the timing of CSI reference resource, and the non-periodic SRS transmission.
[0483] The following examples illustrate UL transmission with added koffset:
[0484] In some embodiments, for the transmission timing of DCI-scheduled PUSCHs (including CSI on the PUSCH), the time slot allocated to the PUSCH can be modified to... That is, the terminal in the time slot PUSCH is transmitted in the middle. Where n is the time slot with scheduled DCI, K2 is a constant based on PUSCH, and μ PUSCH and μ PDCCHSCS configurations for PUSCH and PDCCH respectively, K offset For additional time slot offset, see the description of the foregoing embodiments.
[0485] In some embodiments, for the transmission timing of PUSCH under RAR grant scheduling, the terminal modifies the time slot allocated to the PUSCH to n+K2+Δ+K. offset That is, the terminal is in time slot n+K2+Δ+K offset PUSCH is transmitted in the middle. Where n is the time slot with scheduling RAR authorization, K2 is a constant based on PUSCH, Δ is the set fixed time slot offset, and K... offset For additional time slot offset, see the description of the foregoing embodiments.
[0486] In some embodiments, the timing of HARQ-ACK transmission on the PUCCH is modified to n+K1+K. offset That is, the terminal is in time slot n+K1+K offset The corresponding HARQ-ACK information is provided during the PUCCH transmission within the time slot. Here, n is the time slot providing the corresponding HARQ-ACK information, K1 is a constant based on PUCCH, and K... offset This is for the additional time slot offset.
[0487] In some embodiments, the transmission timing for CSI reference resources is in the downlink time slot. CSI reference resources are provided. Here, n represents the downlink time slot. K is the time slot corresponding to the CSI reference resource. offset This is for the additional time slot offset.
[0488] In some embodiments, for the transmission timing of aperiodic SRS, the terminal in the time slot Each SRS resource triggered in the process is used to centrally transmit aperiodic SRS. Here, n is the time slot of the aperiodic SRS, and μ... SRS and μ PDCCH The subcarrier spacing configurations for SRS and PDCCH are respectively, where K0 is a constant based on aperiodic SRS, and K... offset This is for the additional time slot offset.
[0489] Example 5-2
[0490] NTN downlink MAC-CE commands require that MAC-CE-related (e.g., activated) downlink transmission features (e.g., TCI, CSI report transmission, CSI resource determination) take effect after the base station receives uplink HARQ-ACK feedback for MAC-CE. An example is shown below:
[0491] In some embodiments, the CSI request field in the DCI is used to trigger CSI reporting.
[0492] In some embodiments, CSI is not requested when all bits of the CSI request field of the DCI are set to zero.
[0493] In some embodiments, when the number of CSI trigger states configured in the CSI-aperiodic trigger state list is greater than When, where N TS This refers to the number of bits in the DCI CSI request field. The terminal receives a partial selection indication, which is used to select... The trigger state is mapped to the code point of the CSI request field in the DCI. TS Configured by the higher-level parameter reportTriggerSize, where N TS ∈{0, 1, 2, 3, 4, 5, 6}. When the terminal will transmit a PUCCH with HARQ-ACK information in slot n corresponding to the PDSCH carrying the partial selection indication, it will start from slot n. Starting from the first time slot thereafter, the corresponding actions in [10, TS 38.321] are applied, along with the UE's assumption of mapping the selected CSI trigger state to the code points of the DCI CSI request field, where μ is the SCS configuration of the PUCCH. This refers to the subcarrier spacing configuration of kmac, and specifically for Frequency Range 1 and Frequency Range 2 (FR2-NTN) applied to NTN. The value of kmac can be 0, provided by K-Mac, or if K-Mac is not provided, kmac = 0.
[0494] Optionally, for UEs configured with CSI resource settings, the higher-layer parameter resourceType is set to "semi-persistent".
[0495] In some embodiments, when the terminal receives an activation command, the CSI-RS resource set for channel measurement and the CSI-IM / NZP CSI-RS resource set for interference measurement associated with the configured CSI resource set are used, and when the UE transmits a PUCCH with HARQ-ACK information in slot n corresponding to the PDSCH carrying the selection command, the corresponding action and UE assumptions (including QCL assumptions provided by the reference list of TCI states, which should be from slot n) are applied in [10, TS 38.321]. The first time slot thereafter begins to apply one CSI-RS / CSI-IM transport corresponding to the configured CSI-RS / CSI-IM resource configuration (one for each active resource), where μ is the SCS configuration of PUCCH. This refers to the subcarrier spacing configuration of kmac, and specifically for frequency band 1 (Frequency Range 1) and frequency band 2 (FR2-NTN) applied to NTN. The value can be 0, kmac is provided by K-Mac, or if K-Mac is not provided, kmac = 0. If the RS in the TCI state configuration in the list is set to "typeD", then the RS can be an SS / PBCH block, a periodic or semi-persistent CSI-RS located in the same or different CC / DL BWP.
[0496] In some embodiments, when the terminal receives a deactivation command for an active CSI-RS / CSI-IM resource setting associated with a configured CSI resource setting, and when the terminal will transmit a PUCCH with HARQ-ACK information in slot n corresponding to the PDSCH carrying the deactivation command, the terminal from slot n... The first time slot thereafter applies the corresponding actions in [10, TS 38.321] and the assumptions regarding the cessation and deactivation of CSI-RS / CSI-IM transmissions corresponding to the CSI-RS / CSI-IM resource sets. Here, μ is the SCS configuration of the PUCCH. This refers to the subcarrier spacing configuration of kmac, and specifically for Frequency Range 1 and Frequency Range 2 (FR2-NTN) applied to NTN. The value of kmac can be 0, provided by K-Mac, or if K-Mac is not provided, kmac = 0.
[0497] Optionally, the terminal is configured with a semi-persistent ZP-CSI-RS-ResourceSet list provided by the higher-level parameter sp-ZP-CSI-RS-resourceststoaddmodlist.
[0498] In some embodiments, when terminal 101 transmits a PUCCH containing HARQ-ACK information in time slot n, and the PUCCH corresponds to a PDSCH carrying a resource activation command for Zero Power Channel State Information Reference Signal (ZP CSI-RS), the terminal receives the PUCCH from the time slot n. The first time slot thereafter applies the corresponding actions in [10, TS 38.321], along with the assumptions regarding the mapping of PDSCH resource elements (REs) corresponding to the activated ZP CSI-RS resources. Here, μ is the SCS configuration of the PUCCH. This refers to the subcarrier spacing configuration of kmac, and specifically for Frequency Range 1 and Frequency Range 2 (FR2-NTN) applied to NTN. The value of kmac can be 0, provided by K-Mac, or if K-Mac is not provided, kmac = 0.
[0499] In some embodiments, when terminal 101 transmits a PUCCH containing HARQ-ACK information in time slot n, and the PUCCH corresponds to a PDSCH carrying a resource activation command for Zero Power Channel State Information Reference Signal (ZP CSI-RS), the terminal transmits data from time slot n. The first time slot thereafter applies the corresponding actions in [10, TS 38.321], along with the assumptions regarding the mapping of PDSCH resource elements (REs) corresponding to the deactivated ZP CSI-RS resources. Here, μ is the SCS configuration of the PUCCH. This refers to the subcarrier spacing configuration of kmac, and specifically for Frequency Range 1 and Frequency Range 2 (FR2-NTN) applied to NTN. The value of kmac can be 0, provided by K-Mac, or if K-Mac is not provided, kmac = 0.
[0500] In some embodiments, when the terminal transmits a PUCCH with HARQ-ACK information in slot n corresponding to the PDSCH carrying the activation command, from slot n... The first time slot thereafter begins applying the indication mapping between the TCI status and the code points in the DCI field "Transmission Configuration Indication," where μ is the SCS configuration of the PUCCH. This refers to the subcarrier spacing configuration of kmac, and specifically for Frequency Range 1 and Frequency Range 2 (FR2-NTN) applied to NTN. The value can be 0, kmac is provided by K-Mac, or if K-Mac is not provided, kmac = 0. If tci-PresentInDCI is set to "Enabled" or tci-PresentInDCI-1-2 is configured for scheduling PDSCH CORESET, and if applicable, the time offset between the reception of DL DCI and the corresponding PDSCH is equal to or greater than timeDurationForQCL after the UE receives the initial higher-layer configuration of the TCI state and before receiving the activation command.
[0501] In some embodiments, the terminal assumes that, except during the random access procedure of RACH-based LTM (if applicable), the demodulation reference signal (DM-RS) of the serving cell's PDSCH port is quasi-co-located with the reference signal in the candidate TCI-State indicated in the LTM cell handover command MAC CE. Otherwise, the terminal 101 may assume that the DM-RS port of the serving cell's PDSCH is quasi-co-located with the synchronization signal or physical broadcast channel block (SS or PBCH block) determined during the initial access procedure when the quasi-co-location type (qcl-Type) is set to "typeA", and, where applicable, also when the quasi-co-location type is set to "typeD".
[0502] Optionally, a variant of kmac can be found in Example 1.
[0503] Example 6: The Relationship Between MAC-CE and Timer
[0504] If the sCellDeactivationTimer associated with the secondary cell expires in time slot n, the terminal applies the corresponding actions in [11, TS 38.321] before Tm, except for the actions related to the CSI report on the active serving cell, as described in step S2203. The actions related to the CSI report on the active serving cell in time slot n... It is applied in the first time slot thereafter. Here, μ is the SCS configuration for PDSCH reception on the secondary cell.
[0505] Example 6-1
[0506] In a general embodiment, if the sCellDeactivationTimer associated with the secondary cell expires in slot n, the UE applies the corresponding action in [11, TS 38.321] after (n+k+kmac) and before Tm, as described in step S2203.
[0507] Example 6-2
[0508] In a particular embodiment, in a time slot The actions related to CSI reporting on the active serving cell are applied in the first time slot thereafter. Here, μ is the SCS configuration used for PDSCH reception on the auxiliary cell.
[0509] Optionally, a variant of kmac can be found in Example 1.
[0510] Example 7: Single-site multi-satellite / Multi-site single-satellite / Multi-site multi-satellite
[0511] The aforementioned kmac implementation is designed for a single-site, single-satellite scenario, therefore it lacks asynchronous functionality. The configuration is designed to accommodate inter-station time offsets and does not involve multiple satellite links with different kMACs. Therefore, to ensure compatibility with such scenarios, the kMAC in the aforementioned embodiment can be determined based on the following method:
[0512] Example 7-1
[0513] For a single-station, two-satellite configuration, the satellite with the larger kmac should be considered as the effective time.
[0514] In all the aforementioned embodiments involving kmac, kmac can be updated to max(kmac,1,kmac,2);
[0515] The method described in this embodiment can also be referred to in the variant embodiment of kmac in Embodiment 1.
[0516] Example 7-2
[0517] Multi-station single-satellite configuration can be similar to the method in Example 7-1, or it can be... To compensate, for example, in all the aforementioned embodiments involving kmac, kmac can be updated to... The value of q, {1, -1}, follows the rules of TS 38.211 below.
[0518] In some embodiments, transmissions from multiple cells can be aggregated. Unless otherwise stated, the following description applies to each serving cell:
[0519] For carrier aggregation in cells with unaligned frame boundaries, the slot offset between PCell / PScell and Scell is... Determined by the higher-level parameter ca-SlotOffset of SCell. μ offset Defined as the maximum value of the lowest subcarrier spacing configuration given by the higher-layer parameter scs-SpecificCarrierList configured for Pcell / PScell and Scell respectively. Slot offset. satisfy:
[0520] When the lowest subcarrier spacing configured for a cell is μ=2 for both cells or μ=3 for both cells, the start of slot 0 at point A of the cell with the lower frequency is the same as the time slot of the other cell. The beginning of overlap, where if the frequency of point A in PCcell or PScell is lower than the frequency of point A in Scell, then q = -1, otherwise q = 1; otherwise, for the beginning of slot 0 of the cell with the lower subcarrier spacing among the lowest subcarrier spacings configured by the higher-layer parameter scs-SpecificCarrierList for the two cells, or if the two cells Pcell or PSCell have the same lowest subcarrier spacing configured by the higher-layer parameter scs-SpecificCarrierList, with the other cell's The starting conditions are consistent, wherein if the minimum subcarrier spacing configuration given by the scs-SpecificCarrierList of the Pcell or PScell is less than or equal to the minimum subcarrier spacing given by the scs-SpecificCarrierList of the Scell, then q = -1; otherwise, q = 1. If the minimum subcarrier spacing given by the scs-SpecificCarrierList of the PCell / PSCell is less than or equal to the minimum subcarrier spacing of the SCell, then q = -1; otherwise, q = 1.
[0521] Example 7-3
[0522] Multiple stations and multiple satellites can be used in a manner similar to that in Example 7-1, or alternatively, by employing... To compensate, for example, in all the aforementioned embodiments involving kmac, kmac can be updated to... The value of q, {1, -1}, follows the rules in Example 7-2 above.
[0523] The kmac mentioned above is the timing offset from the base station to the TA reference point corresponding to the Pcell or Scell.
[0524] This disclosure also proposes an apparatus (also referred to as a communication device, etc.) for implementing any of the above methods. For example, an apparatus is proposed that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Furthermore, another apparatus is proposed that includes units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, etc.) in any of the above methods.
[0525] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.
[0526] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute 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 relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using 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 configuring the hardware circuit 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. Furthermore, 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), or a Deep Learning Processing Unit (DPU).
[0527] [Correction 11.04.2025 based on Rule 91] Figure 4A is a schematic diagram of the structure of a network device proposed in an embodiment of this disclosure. The network device 4100 is used to perform any of the above methods. In some embodiments, as shown in Figure 4A, the network device 4100 may include at least one of a transceiver module 4101, a processing module 4102, etc. In some embodiments, the transceiver module 4101 is used to send a MAC CE to a terminal, the MAC CE being used to activate or deactivate the secondary cell Scell, and the effective time of the MAC CE being determined according to a first offset K, wherein the first offset is an offset value related to the timing advance TA in a non-terrestrial network NTN. Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the network device 102 in any of the above methods, which will not be elaborated here. Optionally, the processing module is used to perform at least one of the other steps performed by the network device 102 in any of the above methods, which will not be elaborated here.
[0528] [Correction 11.04.2025 based on Rule 91] Figure 4B is a schematic diagram of the structure of a terminal proposed in an embodiment of this disclosure. Terminal 4200 is used to execute any of the above methods. In some embodiments, as shown in Figure 4B, terminal 4200 may include at least one of: a transceiver module 4201, a processing module 4202, etc. In some embodiments, the transceiver module 4201 is used to receive a Media Access Control (MAC) CE sent by a network device, wherein the MAC CE is used to activate or deactivate a secondary cell (Scell); the processing module 4202 is used to determine the effective time of the MAC CE according to a first offset K, wherein the first offset is an offset value related to timing advance (TA) in a non-terrestrial network (NTN). Optionally, the transceiver module is used to execute at least one of the communication steps such as sending and / or receiving performed by terminal 101 in any of the above methods, which will not be elaborated here. Optionally, the processing module is used to execute at least one of other steps performed by terminal 101 in any of the above methods (e.g., step S2103, but not limited thereto), which will not be elaborated here.
[0529] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, which may be separate or integrated. Optionally, the transceiver module may be interchangeable with a transceiver.
[0530] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module.
[0531] In some embodiments, the processing module can be replaced by the processor, and the transceiver module can be replaced by the transceiver.
[0532] Figure 5A is a schematic diagram of the structure of the communication device 5100 proposed in an embodiment of this disclosure. The communication device 5100 can be a network device (e.g., access network device, core network device, etc.), a terminal (e.g., user equipment, etc.), a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 5100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.
[0533] As shown in Figure 5A, the communication device 5100 is used to execute any of the above methods. In some embodiments, the communication device 5100 includes one or more processors 5101. The processor 5101 may be a general-purpose processor or a special-purpose processor, such as a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. Optionally, the communication device 5100 is used to execute any of the above methods. Optionally, one or more processors 5101 are used to invoke instructions to cause the communication device 5100 to execute any of the above methods.
[0534] In some embodiments, the communication device 5100 further includes one or more transceivers 5102. When the communication device 5100 includes one or more transceivers 5102, the transceiver 5102 performs at least one of the communication steps such as sending and / or receiving in the above-described method, and the processor 5101 performs at least one of the other steps. In optional embodiments, the transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc., can be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., can be used interchangeably; the terms receiver, receiving unit, receiver, receiving circuit, etc., can be used interchangeably.
[0535] In some embodiments, the communication device 5100 further includes one or more memories 5103 for storing data and / or instructions. Optionally, one or more processors 5101 are used to invoke instructions stored in the memory 5103 to cause the communication device 5100 to perform any of the above methods. Optionally, all or part of the memory 5103 may also be located outside the communication device 5100. In an optional embodiment, the communication device 5100 may include one or more interface circuits 5104. Optionally, the interface circuit 5104 is connected to the memory 5102 and can be used to receive data and / or instructions from the memory 5102 or other devices, and can be used to send data and / or instructions to the memory 5102 or other devices. For example, the interface circuit 5104 can read data and / or instructions stored in the memory 5102 and send the data and / or instructions to the processor 5101.
[0536] The communication device 5100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 5100 described in this disclosure is not limited thereto, and the structure of the communication device 5100 may not be limited by FIG. 5A. The communication device may be a standalone device or a part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data, programs and / or instructions; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.
[0537] Figure 5B is a schematic diagram of the structure of chip 5200 according to an embodiment of this disclosure. For cases where the communication device 5100 can be a chip or a chip system, please refer to the schematic diagram of chip 5200 shown in Figure 5B, but it is not limited thereto.
[0538] Chip 5200 includes one or more processors 5201. Chip 5200 is used to perform any of the methods described above.
[0539] In some embodiments, chip 5200 further includes one or more interface circuits 5202. Optionally, terms such as interface circuit, interface, and transceiver pin can be used interchangeably. In some embodiments, chip 5200 further includes one or more memories 5203 for storing data and / or instructions. Optionally, all or part of the memories 5203 may be located outside of chip 5200. Optionally, the interface circuit 5202 is connected to the memories 5203, and the interface circuit 5202 can be used to receive data and / or instructions from the memories 5203 or other devices, and the interface circuit 5202 can be used to send data and / or instructions to the memories 5203 or other devices. For example, the interface circuit 5202 can read data and / or instructions stored in the memories 5203 and send the data and / or instructions to the processor 5201.
[0540] In some embodiments, the interface circuit 5202 performs at least one of the communication steps such as sending and / or receiving in the above-described method. For example, the interface circuit 5202 performing the communication steps such as sending and / or receiving in the above-described method refers to the interface circuit 5202 performing data and / or instruction interaction between the processor 5201, chip 5200, memory 5203, or transceiver device. In some embodiments, the processor 5201 performs at least one of the other steps. The modules and / or devices described in the various embodiments, such as virtual devices, physical devices, and chips, can be arbitrarily combined or separated as appropriate. Optionally, some or all of the steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.
[0541] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform 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 not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.
[0542] This disclosure also proposes a program product, including a program and / or instructions, which, when executed by a communication device, cause the communication device to perform any of the above methods. Optionally, the program product is a computer program product. Optionally, the program product is stored on the storage medium.
[0543] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods. Industrial applicability
[0544] For the MAC CE used to activate or deactivate Scell, the effective time of the MAC CE can be determined based on the first offset K related to TA in NTN. This allows for an accurate and reasonable effective time in scenarios where TA is large in NTN, which is beneficial for improving throughput in NTN based on CA and can improve communication efficiency in this scenario.
Claims
1. A communication method, executed by a terminal, the method comprising: A control unit MAC CE that receives media access control data from a network device, wherein the MAC CE is used to activate or deactivate the secondary cell Scell; The effective time of the MAC CE is determined based on the first offset K, wherein the first offset is the offset value related to the timing advance TA in the non-terrestrial network NTN.
2. The method as described in claim 1, wherein, The effective date of the MAC CE is one of the following: In time (n+k+first offset K); In time (n+k); After time (n+k+first offset K); After time (n+k); Where n is the time when the terminal receives the MAC CE, and k is a value determined based on the protocol.
3. The method as described in claim 2, wherein, The k satisfies one of the following: Where k1 is the time related to the HARQ-ACK information feedback corresponding to the MAC CE, and X is an integer or fraction. It is the number of time slots per subframe for the subcarrier spacing SCS configuration μ that carries the PUCCH transmission of the HARQ-ACK.
4. The method as described in claim 2 or 3, wherein, The method further includes: After (n+k+first offset K) or after n+k and before Tm, perform Scell activation-related operations or deactivation-related operations, where Tm is a value determined based on the protocol.
5. The method as described in claim 2 or 3, wherein, When the effective time of the MAC CE is (n+k+first offset K) or n+k, the method further includes at least one of the following: In time slot n+k or n+k+first offset K, a Channel State Information (CSI) report for the active serving cell is sent to the network device. In time slot n+k or n+k+first offset K, perform actions related to the secondary cell deactivation timer. In the first time slot after the active serving cell n+k or (n+k+first offset K), execute the CSI report corresponding to the inactive serving cell in n+k or (n+k+first offset K).
6. The method of any one of claims 1 to 3, wherein the MAC CE is used to deactivate Scell, and the method further comprises at least one of the following: Perform the deactivation-related operations before Tm; Perform the CSI reporting action for the active serving cell in (n+k+first offset K) or n+k; in, n is the time when the terminal receives the MAC CE, and k is a value determined based on the protocol.
7. The method of claim 1, wherein, The deactivation timer associated with the Scell expires at time n, and the method further includes at least one of the following: After (n+k+first offset K) or after n_+k and before Tm, execute Scell to activate the relevant operation; exist In the first time slot thereafter, a CSI report for activating the serving cell is sent to the network device.
8. The method according to any one of claims 1 to 7, wherein, The method further includes: An uplink transmission is performed after (n+k+first offset K) or after n+k and before Tm, the uplink transmission including at least one of the following: Physical uplink shared channel (PUSCH) transmission; Transmission of HARQ-ACK in the Physical Uplink Control Channel (PUCCH); CSI reference resource timing; Non-periodic probe reference signal (SRS) transmission.
9. The method of claim 1, wherein, The MAC CE is also used to activate downlink transmission features, and the MAC CE takes effect after the network device receives the HARQ-ACK corresponding to the MAC CE.
10. The method of claim 9, wherein, The method further includes: After the MAC CE takes effect, the behavior corresponding to the downlink transmission feature is executed, and the behavior corresponding to the downlink transmission feature includes at least one of the following: from At the start of the next time slot, a CSI report is sent to the network device; from Starting from the first time slot thereafter, CSI-RS resource configuration is used to transmit CSI-RS or CSI-IM resource configuration is used to transmit CSI-IM for CSI interference measurement. from Starting from the first time slot thereafter, transmission based on deactivating CSI-RS or CSI-IM resource sets will cease; from Starting from the first time slot thereafter, the action corresponding to the zero-power reference signal ZP CSI-RS resource is executed; from Starting from the first time slot thereafter, the application transmit configuration indicates the TCI status; Where n' is the time when the terminal sends the HARQ-ACK.
11. The method according to any one of claims 1 to 10, wherein, The first offset K includes one of the following: kmac, where kmac is used to indicate the round-trip time (RTT) between the base station and the TA reference point in the network device; koffset, which is used to indicate the RTT between the terminal and the TA reference point; koffset+kmac; min(koffset,kmac); max(koffset,kmac); ktotal-koffset, where ktotal is used to indicate the RTT of the transmission between the terminal and the base station via satellite; The This indicates the timing deviation between different base stations in the network device.
12. The method as described in any one of claims 3, 7, 10, or 11, wherein, The value of X is a / m, where a and m are integers.
13. The method of claim 11, wherein, The kmac is indicated by the network device, or the kmac is 0.
14. The method of claim 11, wherein, The kmac satisfies one of the following: The kmac is max(kmac 1, kmac 2), where kmac 1 and kmac 2 represent the kmac corresponding to different satellites, and the network device includes a single base station with multiple satellites; The kmac is The network equipment includes multiple base stations and a single satellite; The kmac is The network equipment includes multiple base stations and multiple satellites, and the value of q is in {1, -1}.
15. The method of claim 11, wherein, The koffset satisfies one of the following: The koffset is max(koffset 1, koffset 2), where koffset1 and koffset2 represent the koffsets corresponding to different satellites, and the network device includes a single base station with multiple satellites; The koffset is The network equipment includes multiple base stations and a single satellite; The koffset is The network equipment includes multiple base stations and multiple satellites, and the value of q is in {1, -1}.
16. A communication method performed by a network device, the method comprising: A MAC CE is sent to the terminal. The MAC CE is used to activate or deactivate the secondary cell Scell. The effective time of the MAC CE is determined according to a first offset K, wherein the first offset is the offset value related to the timing advance TA in the non-terrestrial network NTN.
17. The method of claim 16, wherein, The effective date of the MAC CE is one of the following: In time (n+k+first offset K); In time (n+k); After time (n+k+first offset K); After time (n+k); Where n is the time when the terminal receives the MAC CE, and k is a value determined based on the protocol.
18. The method of claim 17, wherein, The k satisfies one of the following: Where k1 is the time related to the HARQ-ACK information feedback corresponding to the MAC CE, and X is an integer or fraction. It is the number of time slots per subframe for the subcarrier spacing SCS configuration μ that carries the PUCCH transmission of the HARQ-ACK.
19. The method of claim 17 or 18, wherein, After (n+k+first offset K) or after n+k and before Tm, Scell activation-related operations or deactivation-related operations are performed, where Tm is a value determined based on the protocol.
20. The method of claim 16, wherein, The MAC CE is used to deactivate the Scell, and is used to perform deactivation-related operations before Tm; and / or, is used to perform CSI reporting-related actions for activating the serving cell in (n+k+first offset K) or n+k. Where n is the time when the terminal receives the MAC CE, and k is a value determined based on the protocol.
21. The method of claim 16, wherein, The deactivation timer associated with the Scell expires at time n, after (n+k+first offset K) or n_+k and before Tm, and is used to perform the Scell deactivation related operation. Alternatively, the method may further include: exist In the first time slot thereafter, the CSI report for the activated serving cell sent by the terminal is received.
22. The method according to any one of claims 16 to 21, wherein, The MAC CE is also used to activate downlink transmission features, and the MAC CE takes effect after the network device receives the HARQ-ACK corresponding to the MAC CE.
23. The method as claimed in any one of claims 16 to 22, wherein, The first offset K includes one of the following: kmac, where kmac is used to indicate the round-trip time (RTT) between the base station and the TA reference point in the network device; koffset, which is used to indicate the RTT between the terminal and the TA reference point; koffset+kmac; min(koffset,kmac); max(koffset,kmac); ktotal-koffset, where ktotal is used to indicate the RTT of the transmission between the terminal and the base station via satellite; The This indicates the timing deviation between different base stations in the network device.
24. The method of any one of claims 18, 21, or 23, wherein, The value of X is a / m, where a and m are integers.
25. The method of claim 23, wherein, The kmac is indicated by the network device, or the kmac is 0.
26. The method of claim 23, wherein, The kmac satisfies one of the following: The kmac is max(kmac 1, kmac 2), where kmac 1 and kmac 2 represent the kmac corresponding to different satellites, and the network device includes a single base station with multiple satellites; The kmac is The network equipment includes multiple base stations and a single satellite; The kmac is The network equipment includes multiple base stations and multiple satellites, and the value of q is in {1, -1}.
27. The method of claim 23, wherein, The koffset satisfies one of the following: The koffset is max(koffset 1, koffset 2), where koffset1 and koffset2 represent the koffsets corresponding to different satellites, and the network device includes a single base station with multiple satellites; The koffset is The network equipment includes multiple base stations and a single satellite; The koffset is The network equipment includes multiple base stations and multiple satellites, and the value of q is in {1, -1}.
28. A communication device, wherein, The communication device is used to perform the method according to any one of claims 1 to 15 or any one of claims 16 to 27.
29. A terminal, comprising a processor and a memory, wherein, The memory is used to store computer programs; The processor is used to execute the computer program to implement the method as described in any one of claims 1 to 15.
30. A network device, comprising a processor and a memory, wherein, The memory is used to store computer programs; The processor is used to execute the computer program to implement the method as described in any one of claims 16 to 27.
31. A storage medium storing instructions, wherein, When the instructions are executed on the communication device, the communication device performs the method as described in any one of claims 1 to 15 or any one of claims 16 to 27.
32. A program product comprising at least one of a program and instructions, wherein, When at least one of the programs or instructions is executed by a communication device, it implements the method as described in any one of claims 1 to 15 or any one of claims 16 to 27.