Method, apparatus and device for determining terminal behavior, and storage medium

Abstract

The present disclosure discloses a terminal behavior determination method and device, equipment and storage medium, and belongs to the field of communication. The method comprises: determining the terminal behavior in the ambiguous time; wherein the ambiguous time is a first time period between the first invalid time of the last uplink synchronization assistance information and the second effective time of the current uplink synchronization assistance information. The method is used to support the determination of the terminal behavior in the ambiguous time.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of communication, and particularly relates to a terminal behavior determination method and device, equipment and a storage medium. BACKGROUND

[0002] Currently, the third Generation Partnership Project (3GPP) is researching Non-Terrestrial Network (NTN) technology.

[0003] In the NTN system, a satellite communication mode is generally used to provide communication services to a User Equipment (UE) on the ground. In this mode, the uplink synchronization of the UE requires satellite ephemeris and common Time Advance (common TA) parameter information.

[0004] In one case, the effective time of the satellite ephemeris and the common TA parameter information is the starting position of the downlink subframe indicated by the epoch time contained in the System Information Block (SIB). Generally, before the last satellite ephemeris and common TA parameter information expires, the effective time of the current satellite ephemeris and common TA parameter information has not yet arrived, thus causing an ambiguity duration. SUMMARY

[0005] Embodiments of the present disclosure provide a terminal behavior determination method, device, equipment and a storage medium. The technical solution is as follows:

[0006] According to one aspect of the embodiments of the present disclosure, a terminal behavior determination method is provided, the method is performed by a terminal, and the method comprises:

[0007] determining the terminal behavior within an ambiguity duration.

[0008] The ambiguity duration is a first time period between a first expiration time of last uplink synchronization assistance information and a second effective time of current uplink synchronization assistance information.

[0009] According to another aspect of the embodiments of the present disclosure, a communication device is provided, the device comprises:

[0010] a processing module configured to determine the terminal behavior within an ambiguity duration.

[0011] The fuzzy time is a first time period between a first invalid time of previous uplink synchronization assistance information and a second valid time of current uplink synchronization assistance information.

[0012] According to another aspect of the embodiments of the present disclosure, a terminal is provided, which comprises:

[0013] a processor;

[0014] a transceiver connected to the processor;

[0015] The processor is configured to load and execute executable instructions to implement the determination method of the terminal behavior according to the various aspects described above.

[0016] According to another aspect of the embodiments of the present disclosure, a computer storage medium is provided, which stores at least one instruction, at least one program, a code set or an instruction set, which is loaded and executed by a processor to implement the determination method of the terminal behavior according to the various aspects described above.

[0017] According to another aspect of the embodiments of the present disclosure, a computer program product (or computer program) is provided, which comprises computer instructions stored in a computer readable storage medium; a processor of a computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions, so that the computer device executes the determination method of the terminal behavior according to the various aspects described above.

[0018] According to another aspect of the embodiments of the present disclosure, a chip is provided, which comprises editable logic circuit and / or program instructions, and when the chip is running, is used to implement the determination method of the terminal behavior according to the various aspects described above.

[0019] The technical solutions provided by the embodiments of the present disclosure can include the following beneficial effects:

[0020] In the uplink synchronization scenario, in the case that there is a fuzzy time between a first invalid time of previous uplink synchronization assistance information and a second valid time of current uplink synchronization assistance information, the terminal can determine its terminal behavior in the fuzzy time, which is used to support the determination of the terminal behavior in the fuzzy time.

[0021] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings in the following description only represent some of the embodiments of the present disclosure, and for those skilled in the art, other drawings can also be obtained from these drawings without creative effort.

[0023] Figure 1 is a schematic diagram of an NTN scenario based on a transparent payload according to an example embodiment;

[0024] Figure 2 is a schematic diagram of an NTN scenario based on a regenerative payload according to an example embodiment;

[0025] Figure 3 is a schematic diagram of a fuzzy time according to an example embodiment;

[0026] Figure 4 is a flowchart of a method of determining terminal behavior according to an example embodiment;

[0027] Figure 5 is a flowchart of a method of determining terminal behavior according to another example embodiment;

[0028] Figure 6 is a schematic diagram of a fuzzy time according to another example embodiment;

[0029] Figure 7 is a flowchart of a random access method according to an example embodiment;

[0030] Figure 8 is a block diagram of a communication device according to an example embodiment;

[0031] Figure 9 is a schematic diagram of a structure of a terminal according to an example embodiment. DETAILED DESCRIPTION

[0032] The example embodiments will be described in detail herein with reference to the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following example embodiments do not represent all implementations consistent with the present disclosure. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0033] Currently, 3GPP is studying NTN technology. In the NTN system, a satellite communication mode is generally used to provide communication services to ground UEs. Compared with ground cellular network communication, satellite communication has many unique advantages. First, satellite communication is not limited by the user's region; for example, general terrestrial communication cannot cover the ocean, high mountains, deserts, and other areas where communication equipment cannot be set up, or areas where communication coverage is not done due to sparse population, while for satellite communication, since a satellite can cover a larger ground, and the satellite can orbit around the earth, in theory, every corner of the earth can be covered by satellite communication. Second, satellite communication has great social value. Satellite communication can cover remote mountainous areas, poor countries or regions at a lower cost, so that people in these areas can enjoy advanced voice communication and mobile Internet technology, which is conducive to narrowing the digital gap with developed areas and promoting the development of these areas. Third, satellite communication has a long distance, and the communication distance increases without a significant increase in communication cost. Finally, satellite communication has high stability and is not limited by natural disasters.

[0034] Communication satellites are divided into low earth orbit (Low-Earth Orbit, LEO) satellites, medium earth orbit (Medium-Earth Orbit, MEO) satellites, geostationary earth orbit (Geostationary Earth Orbit, GEO) satellites, high elliptical orbit (High Elliptical Orbit, HEO) satellites, etc. according to the orbital height. At the current stage, the main research is LEO and GEO.

[0035] LEO

[0036] Low earth orbit satellites have a height range of 500 kilometers (km) to 1500 km, and the corresponding orbit period is about 1.5 hours to 2 hours. The signal propagation delay of single-hop communication between UEs is generally less than 20 milliseconds (ms). The maximum satellite visibility time is 20 minutes. The signal propagation distance is short, the link loss is small, and the requirement for the transmission power of the UE is not high.

[0037] GEO

[0038] Geostationary earth orbit satellites have an orbital height of 35786 km and a rotation period around the earth of 24 hours. The signal propagation delay of single-hop communication between UEs is generally 250 ms.

[0039] In order to ensure the coverage of the communication satellite and improve the system capacity of the entire satellite communication system, the communication satellite adopts multi-beam to cover the ground, and a communication satellite can form dozens or even hundreds of beams to cover the ground; a satellite beam can cover a ground area with a diameter of dozens to hundreds of kilometers.

[0040] Currently, there are at least two NTN scenarios: a transparent payload based NTN scenario and a regenerative payload based NTN scenario. Figure 1 A schematic diagram of a transparent payload based NTN scenario is shown, Figure 2 A schematic diagram of a regenerative payload based NTN scenario is shown.

[0041] An NTN network consists of the following network elements:

[0042] • One or multiple network devices 16: for connecting the satellite 14 and the data network 18 on the ground;

[0043] • Feeder Link: a link for communication between the network device 16 and the satellite 14;

[0044] • Service Link: a link for communication between the UE 12 and the satellite 14;

[0045] • Satellite 14: can be divided into two types of transparent payload and regenerative payload from the function provided.

[0046] • Transparent payload: only provides the functions of radio frequency filtering, frequency conversion and amplification. Only provides transparent forwarding of signals, without changing the waveform signals forwarded.

[0047] • Regenerative payload: in addition to providing the functions of radio frequency filtering, frequency conversion and amplification, it can also provide the functions of demodulation / decoding, routing / conversion, and encoding / modulation. It has part or all of the functions of a base station.

[0048] • ISL (Inter-Satellite Links): exists in the regenerative payload based NTN scenario.

[0049] In the NTN system, the uplink synchronization of the UE requires satellite ephemeris and common timing advance parameter information. Among them, the satellite ephemeris is used to compensate for the delay of the Service Link; the common TA parameter information is used to compensate for the delay of the Feeder Link.

[0050] The above satellite ephemeris and common TA parameter information will be sent in NTN-SIB, and there are two ways to indicate the validity time of these information:

[0051] Way 1: Explicit indication, the validity time of satellite ephemeris and common TA parameter information is the start position of downlink subframe indicated by epochtime contained in NTN-SIB. Wherein, the indicated Epochtime is System Frame Number (SFN) + subframe number.

[0052] Way 2: Implicit indication, the validity time of satellite ephemeris and common TA parameter information is the end position of System Information window (SI window) where NTN-SIB is located.

[0053] Since satellite ephemeris and common TA parameter information are time-varying, they are only valid within a certain time, and the valid time period will also be notified in NTN-SIB. If the epochtime of satellite ephemeris and common TA parameter information is indicated in a display indication manner, there is a case that the UE reads NTN-SIB containing uplink synchronization assistance information at the first receiving time T11, obtains the first validity time T12 and the first valid time length of the last satellite ephemeris and common TA parameter information, and the UE can calculate the first invalid time T13; reads the new NTN-SIB at the second receiving time T21 before the first invalid time T13, obtains the second validity time T22 of the new satellite ephemeris and common TA parameter information, and the second validity time T22 exceeds the first invalid time T13, so a fuzzy time T1 will be caused, as shown in the following figure. Figure 3 In the above fuzzy time, the UE behavior is not defined.

[0054] Figure 4 A flow chart of a method for determining terminal behavior provided by an example embodiment of the present disclosure is shown, the method is applied in an NTN scenario and is executed by a UE, and the method comprises:

[0055] Step 201, determining the terminal behavior in the fuzzy time.

[0056] The terminal determines the terminal behavior in the fuzzy time in the case of the fuzzy time. Wherein, the fuzzy time is a first time period between the first invalid time of the last uplink synchronization assistance information and the second validity time of the current uplink synchronization assistance information. Exemplarily, the first time period includes part or all of the interval time between the first invalid time of the last uplink synchronization assistance information and the second validity time of the current uplink synchronization assistance information.

[0057] The uplink synchronization assistance information is used for uplink synchronization. The uplink synchronization refers to that uplink signals sent by terminals using different positions of a same time slot arrive at receiving antennas of a network device at the same time, i.e., signals of different terminals in a same time slot arrive at the receiving antennas of the network device synchronously. In a scenario of uplink synchronization, the terminal determines a terminal behavior in a fuzzy time between a first invalid time of a previous uplink synchronization assistance information and a second valid time of a current uplink synchronization assistance information. Exemplarily, the uplink synchronization assistance information is carried in a system information block.

[0058] Exemplarily, the fuzzy time is an entire interval time between the first invalid time of the previous uplink synchronization assistance information and the second valid time of the current uplink synchronization assistance information, and the terminal determines the terminal behavior in the entire interval time. Alternatively, the fuzzy time is a partial interval time between the first invalid time of the previous uplink synchronization assistance information and the second valid time of the current uplink synchronization assistance information, and the terminal determines the terminal behavior in the partial interval time.

[0059] Optionally, the terminal behavior (UE behavior) includes at least one of the following:

[0060] • notifying a radio resource control (RRC) layer to release an RRC connection, and the terminal enters an RRC idle state or an RRC sleep state.

[0061] In a case where the terminal is in an RRC connected state (i.e., an RRC_connected state), the terminal determines that the terminal behavior in the fuzzy time is to notify the RRC layer to release the RRC connection, and to switch from the RRC connected state to the RRC idle state (i.e., an RRC_idle state) or the RRC sleep state (i.e., an RRC_inactive state).

[0062] • clearing a hybrid automatic repeat reQuest (HARQ) buffer.

[0063] The terminal determines that the terminal behavior in the fuzzy time is to clear the HARQ buffer.

[0064] • in a case where a physical uplink control CHannel (PUCCH) is configured, notifying the RRC layer to release the PUCCH.

[0065] The terminal determines that, in a case where the PUCCH is configured, the terminal behavior in the fuzzy time is to notify the RRC layer to release the PUCCH.

[0066] • If a Sounding Reference Signal (SRS) is configured, notify the RRC layer to release the SRS.

[0067] When the terminal is configured with SRS, the terminal's behavior within the fuzzy time period is to notify the RRC layer to release SRS.

[0068] • Clear the pre-configured downlink transmissions.

[0069] If the terminal has pre-configured downlink transmission, it is determined that the terminal's behavior within the fuzzy time period is to clear the pre-configured downlink transmission.

[0070] For example, downlink transmissions include transmissions on the physical downlink shared channel and / or the physical downlink control channel.

[0071] • Clear the pre-configured uplink transmission.

[0072] If the terminal has pre-configured uplink transmission, it is determined that the terminal's behavior within the fuzzy time period is to clear the pre-configured uplink transmission.

[0073] For example, uplink transmissions include transmissions on the Physical Uplink Shared Channel and / or the Physical Uplink Control Channel.

[0074] • Clear the Physical Uplink Shared Channel (PUSCH) resources used for semi-static Channel State Information (CSI) reporting.

[0075] The terminal determines that its behavior within the fuzzy time period is to clear the PUSCH resources used for semi-static CSI reporting. Semi-static refers to the periodic reporting of CSI.

[0076] • Maintain the N of the TimeAdvance Group (TAG). TA N TA It is the timing advance between the downlink and uplink of the terminal indicated by the network device.

[0077] Here, TAG refers to a set of carriers corresponding to a timing advance. N maintains the TAG. TA That is, to retain a set of N corresponding to a carrier. TA The terminal determines its behavior within the fuzzy time interval by maintaining the N of the TAG. TA .

[0078] • The time alignment timers have expired.

[0079] The terminal behavior in the ambiguous time is determined as that the time alignment timer has expired. The time alignment timer is a timer for monitoring uplink time synchronization.

[0080] Optionally, the second validity time of the current uplink synchronization assistance information refers to a start position of a downlink subframe indicated by the second validity time.

[0081] In summary, the method for determining terminal behavior provided in the embodiment can determine the terminal behavior in the ambiguous time in the case that the terminal is between the first invalid time of the previous uplink synchronization assistance information and the second validity time of the current uplink synchronization assistance information, thereby supporting the determination of the terminal behavior in the ambiguous time.

[0082] For example, after obtaining the system information block, the terminal first determines whether there is an ambiguous time, and therefore, step 201 can include step 301, as shown in the following table: Figure 5 The steps are as follows:

[0083] Step 301: In the case that the second validity time meets the existence condition of the ambiguous time, the terminal behavior in the ambiguous time is determined.

[0084] The terminal determines that the second validity time of the current uplink synchronization assistance information meets the existence condition of the ambiguous time, and then determines the terminal behavior in the ambiguous time.

[0085] Optionally, the existence condition of the ambiguous time includes at least one of the following:

[0086] The second validity time is later than the first invalid time.

[0087] That is, the second validity time of the current uplink synchronization assistance information is later than the first invalid time of the previous uplink synchronization assistance information.

[0088] The first time is later than the first invalid time, and the first time is a time obtained by subtracting a validity period of the current uplink synchronization assistance information from the second validity time.

[0089] That is, the first time is a time obtained by subtracting a validity period of the current uplink synchronization assistance information from the second validity time of the current uplink synchronization assistance information.

[0090] For example, the terminal determines that the second validity time of the current uplink synchronization assistance information is later than the first invalid time of the previous uplink synchronization assistance information, and then determines the terminal behavior in the ambiguous time.

[0091] Alternatively, the terminal determines that the first time is later than the first invalid time of the previous uplink synchronization assistance information, and then determines the terminal behavior in the ambiguous time.

[0092] Optionally, in the case that the second validity time of the current uplink synchronization assistance information is later than the first invalid time of the previous uplink synchronization assistance information, the first time period is the interval time between the first invalid time of the previous uplink synchronization assistance information and the second validity time of the current uplink synchronization assistance information. For example, as shown in FIG. 11, the entire interval time between the first invalid time T13 of the previous uplink synchronization assistance information and the second validity time T22 of the current uplink synchronization assistance information is the ambiguity time T1. Figure 3

[0093] Optionally, in the case that the first time is later than the first invalid time of the previous uplink synchronization assistance information, the first time period is the interval time between the first invalid time of the previous uplink synchronization assistance information and the second validity time of the current uplink synchronization assistance information, as shown in FIG. 12. Figure 3

[0094] Alternatively, in the case that the first time is later than the first invalid time of the previous uplink synchronization assistance information, the first time period is the interval time between the first invalid time of the previous uplink synchronization assistance information and the first time, that is, the ambiguity time is part of the interval time between the first invalid time of the previous uplink synchronization assistance information and the second validity time of the current uplink synchronization assistance information, as shown in FIG. 13. The first time T23 is the time after the second validity time T22 of the current uplink synchronization assistance information minus the valid time period T24 of the current uplink synchronization assistance information. The interval time between the first invalid time T13 of the previous uplink synchronization assistance information and the first time T23 is the ambiguity time T2. Figure 6

[0095] In some embodiments, after the terminal determines the terminal behavior in the ambiguity time, the terminal performs the determined terminal behavior in the ambiguity time; further, the terminal sends a preamble signal at a random access occasion (RACH occasion) after the second validity time of the current uplink synchronization assistance information, to initiate a random access procedure. Optionally, the terminal determines a first timing advance (TA) using the current uplink synchronization assistance information in the system message block at the random access occasion, and sends the preamble signal based on the first timing advance, to thereby initiate the random access procedure.

[0096] ​​​Exemplarily, the system information blocks include a Master Information Block (MIB) and a SIB. The terminal determines a first timing advance using current uplink synchronization assistance information in the NTN-SIB at a random access occasion, and sends a preamble signal based on the first timing advance, thereby initiating a random access procedure. The NTN-SIB can be a SIBx, and x is any one of {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, …}.

[0097] In summary, the method for determining terminal behavior provided in the embodiment defines the ambiguous time and the existence condition of the ambiguous time, and confirms the terminal behavior in the ambiguous time in the case where the second validity time of the current uplink synchronization assistance information meets the existence condition of the ambiguous time.

[0098] Figure 7 A flowchart of a random access method provided by one exemplary embodiment of the disclosure is shown, the method is applied in an NTN scenario and is executed by a UE, and the method includes the following steps.

[0099] In step 401, in the case where the second validity time of the current uplink synchronization assistance information in the NTN-SIB meets the existence condition of the ambiguous time, the terminal behavior in the ambiguous time is determined.

[0100] In the case where the second validity time of the current uplink synchronization assistance information in the NTN-SIB is later than the first invalidity time of the previous uplink synchronization assistance information, the terminal behavior in the ambiguous time is determined.

[0101] Alternatively, in the case where the first time is later than the first invalidity time of the previous uplink synchronization assistance information, the terminal behavior in the ambiguous time is determined, wherein the first time is the time obtained by subtracting the validity period of the current uplink synchronization assistance information from the second validity time of the current uplink synchronization assistance information in the NTN-SIB.

[0102] Exemplarily, in the case where the second validity time of the current uplink synchronization assistance information in the NTN-SIB meets the existence condition of the ambiguous time, the ambiguous time is also determined.

[0103] Optionally, the terminal determines the ambiguous time according to the second validity time of the current uplink synchronization assistance information, or determines the ambiguous time according to the second validity time of the current uplink synchronization assistance information and the first invalidity time of the previous uplink synchronization assistance information, or determines the ambiguous time according to the second validity time of the current uplink synchronization assistance information, the validity period of the current uplink synchronization assistance information, and the first invalidity time of the previous uplink synchronization assistance information.

[0104] For example, the terminal determines the interval time between the first invalid time of the previous uplink synchronization assistance information and the second valid time of the current uplink synchronization assistance information in the NTN-SIB as the ambiguous time. For another example, the terminal subtracts the valid time period of the current uplink synchronization assistance information from the second valid time of the current uplink synchronization assistance information in the NTN-SIB to obtain a first time, and determines the interval time between the first invalid time of the previous uplink synchronization assistance information and the first time as the ambiguous time.

[0105] It should be noted that the order of execution of the determination of the ambiguous time and the determination of the terminal behavior in the embodiments of the present disclosure is not limited. For example, the two can be executed simultaneously: the terminal determines the ambiguous time and the terminal behavior within the ambiguous time when the second valid time of the current uplink synchronization assistance information in the NTN-SIB meets the existence condition of the ambiguous time. Alternatively, the terminal first determines the ambiguous time when the second valid time of the current uplink synchronization assistance information in the NTN-SIB meets the existence condition of the ambiguous time, and then determines the terminal behavior within the ambiguous time.

[0106] Step 402: performing the terminal behavior within the ambiguous time.

[0107] Optionally, the terminal behavior includes at least one of the following:

[0108] Notify the RRC layer to release the RRC-connection and fall back to RRC-idle / RRC-inactive.

[0109] That is, the RRC layer is notified to release the RRC connection, and the terminal enters the RRC idle state or the RRC sleep state.

[0110] Flush all HARQ buffers.

[0111] That is, the HARQ buffer is flushed.

[0112] Notify the RRC to release PUCCH, if configured.

[0113] That is, in the case of configuring the PUCCH, the RRC layer is notified to release the PUCCH.

[0114] Notify the RRC to release SRS, if configured.

[0115] That is, in the case of configuring the SRS, the RRC layer is notified to release the SRS.

[0116] • Clear any configured downlink assignments.

[0117] i.e., clear the preconfigured downlink transmission.

[0118] • Clear any configured uplink grants.

[0119] i.e., clear the preconfigured uplink transmission.

[0120] • Clear any PUSCH resource for semi-persistent CSI reporting.

[0121] i.e., clear the PUSCH resource for semi-persistent CSI reporting.

[0122] • Maintain N TA of this TAG.

[0123] i.e., maintain N TA of this TAG.

[0124] • Consider the running timeAlignmentTimers as expired.

[0125] i.e., determine that the timeAlignmentTimers have expired.

[0126] At step 403, a preamble signal is sent at a random access occasion after the second validity time of the current uplink synchronization assistance information, and a random access procedure is initiated.

[0127] The terminal determines a first timing advance using the current uplink synchronization assistance information at the random access occasion, and sends a preamble signal based on the first timing advance, and initiates a random access procedure.

[0128] In summary, the method for determining terminal behavior provided in the embodiment can be used to support the determination of terminal behavior in the ambiguous time, and in the uplink synchronization scenario, the terminal can determine the terminal behavior in the ambiguous time when the second validity time of the current uplink synchronization assistance information in the system information block meets the existence condition of the ambiguous time.

[0129] Figure 8 A block diagram of a communication device provided by one example embodiment of the present disclosure is shown, which can be realized by software, hardware or a combination of both as part of or all of a terminal, and the device includes:

[0130] The processing module 501 is configured to determine a terminal behavior in an ambiguous time, wherein the ambiguous time is a first time period between a first invalid time of last uplink synchronization assistance information and a second valid time of current uplink synchronization assistance information.

[0131] In some embodiments, the processing module 501 is configured to determine the terminal behavior in the ambiguous time in a case that the second valid time satisfies an existence condition of the ambiguous time.

[0132] In some embodiments, the existence condition of the ambiguous time comprises at least one of:

[0133] The second valid time is later than the first invalid time.

[0134] A first time is later than the first invalid time, the first time being a time after the second valid time minus a valid time period of the current uplink synchronization assistance information.

[0135] In some embodiments, in a case that the second valid time is later than the first invalid time, the first time period is an interval time between the first invalid time and the second valid time.

[0136] In some embodiments, in a case that the first time is later than the first invalid time,

[0137] The first time period is an interval time between the first invalid time and the second valid time, or the first time period is an interval time between the first invalid time and the first time.

[0138] In some embodiments, the processing module 501 is configured to determine the ambiguous time according to the second valid time, or determine the ambiguous time according to the second valid time and the first invalid time, or determine the ambiguous time according to the second valid time, a valid time period of the current uplink synchronization assistance information and the first invalid time, before determining the terminal behavior in the ambiguous time.

[0139] In some embodiments, the terminal behavior comprises at least one of:

[0140] informing an RRC layer to release an RRC connection, and entering an RRC idle state or an RRC sleep state;

[0141] emptying a HARQ buffer;

[0142] informing the RRC layer to release a PUCCH in a case that the PUCCH is configured;

[0143] In a case that the SRS is configured, inform the RRC layer to release the SRS;

[0144] Empty the pre-configured downlink transmission;

[0145] Empty the pre-configured uplink transmission;

[0146] Empty the PUSCH resource for semi-static CSI reporting;

[0147] Maintain N of TAG TA The NTA is a network device indicating the timing advance between the downlink and the uplink of the terminal;

[0148] Determine that the time calibration timer has expired.

[0149] In some embodiments, the apparatus further comprises:

[0150] The sending module 502 is configured to send a preamble signal at a random access occasion after the second effective time, and initiate a random access process.

[0151] In some embodiments, the sending module 502 is configured to determine a first timing advance using the current uplink synchronization assistance information in a system message block at the random access occasion, and send the preamble signal based on the first timing advance.

[0152] In some embodiments, the second effective time is the starting position of a downlink subframe indicated by the second effective time.

[0153] In summary, the communication device provided by the embodiment can determine the terminal behavior in the ambiguous time in the case that there is ambiguous time between the first expiration time of the last uplink synchronization assistance information and the second effective time of the current uplink synchronization assistance information, and support the determination of the terminal behavior in the ambiguous time.

[0154] Figure 9 A structure diagram of a UE provided by an example embodiment of the present disclosure is shown, which includes a processor 111, a receiver 112, a transmitter 113, a memory 114 and a bus 115.

[0155] The processor 111 includes one or more processing cores, and the processor 111 performs various functional applications and information processing by running software programs and modules.

[0156] The receiver 112 and the transmitter 113 can be implemented as a communication component, which can be a communication chip.

[0157] The memory 114 is connected to the processor 111 through the bus 115.

[0158] The memory 114 can be configured to store at least one instruction, and the processor 111 can be configured to execute the at least one instruction to implement the steps in the above method embodiments.

[0159] In addition, the memory 114 can be implemented by any type of volatile or nonvolatile storage devices or a combination thereof, including but not limited to: a magnetic or optical disk, an electrically erasable programmable read-only memory (EEPROM, Electrically Erasable Programmable Read Only Memory), an erasable programmable read-only memory (EPROM, Erasable Programmable Read Only Memory), a static random access memory (SRAM, Static Random-Access Memory), a read-only memory (ROM, Read Only Memory), a magnetic memory, a flash memory, a programmable read-only memory (PROM, Programmable Read Only Memory).

[0160] In an example embodiment, a non-transitory computer-readable storage medium including instructions, such as a memory including instructions, is also provided, and the above-described method for determining terminal behavior can be executed by a processor of a UE to complete the method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM, Random-Access Memory), a compact disc read-only memory (CD-ROM, Compact Disc Read Only Memory), a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0161] A non-transitory computer-readable storage medium, when instructions in the non-transitory computer storage medium are executed by a processor of a UE, enables the UE to perform the above-described method for determining terminal behavior.

[0162] An example embodiment of the present disclosure also provides a terminal, which includes: a processor; and a transceiver connected to the processor; wherein the processor is configured to load and execute executable instructions to implement the method for determining terminal behavior provided by the above-described various method embodiments.

[0163] The example embodiments of the present disclosure further provide a computer readable storage medium, wherein at least one instruction, at least one program, a code set or an instruction set is stored, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to implement the determination method of the terminal behavior provided by each method embodiment.

[0164] It should be understood that "multiple" mentioned herein refers to two or more. The association relationship of "and / or" describing the associated objects means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship.

[0165] Other embodiments of the present disclosure will be apparent to those skilled in the art upon consideration of the specification and practice of the present disclosure disclosed herein. The present disclosure is intended to cover any variations, uses or adaptive changes of the present disclosure following the general principles of the present disclosure and including common knowledge or conventional technical means in the art which are not disclosed by the present disclosure. The specification and examples are only considered as exemplary, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0166] It should be understood that the present disclosure is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method of determining terminal behavior, characterized by, The method is performed by a terminal, and the method comprises: reading a non-terrestrial communication network system information block (NTNSIB) containing uplink synchronization assistance information at a first receiving time, obtaining a first validity time and a first validity time length of last satellite ephemeris and common timing advance parameter information, and calculating a first invalid time; reading a new NTN SIB at a second receiving time before the first invalid time, and obtaining a second validity time of new satellite ephemeris and common timing advance parameter information; in the case of ambiguous time, determining the terminal behavior within the ambiguous time; performing the terminal behavior within the ambiguous time; sending a preamble signal at a random access occasion after the second validity time, and initiating a random access process; wherein the ambiguous time is an interval time between the first invalid time of the last uplink synchronization assistance information and a first time, the first time is later than the first invalid time, and the first time is a time after the second validity time of the current uplink synchronization assistance information minus a valid time period of the current uplink synchronization assistance information.

2. The method of claim 1, wherein, The ambiguous time exists. The second validity time is later than the first invalid time.

3. The method of claim 1, wherein, Before determining the terminal behavior within the ambiguous time, the method further comprises: determining the ambiguous time according to the second validity time, the valid time period of the current uplink synchronization assistance information and the first invalid time.

4. The method according to any one of claims 1 to 3, characterized in that, The terminal behavior comprises at least one of the following: informing a radio resource control (RRC) layer to release an RRC connection, and the terminal entering an RRC idle state or an RRC sleep state; clearing a hybrid automatic repeat request (HARQ) buffer; in the case of being configured with a physical uplink control channel (PUCCH), informing the RRC layer to release the PUCCH; in the case of being configured with a sounding reference signal (SRS), informing the RRC layer to release the SRS; clearing a preconfigured downlink transmission; clearing a preconfigured uplink transmission; clearing a physical uplink shared channel (PUSCH) resource for semi-static channel state information (CSI) reporting; Maintaining a timing advance group, TAG, N TA , the N TA is a network device indicating a timing advance between downlink and uplink of the terminal; determining that a time calibration timer has expired.

5. The method according to any one of claims 1 to 3, characterized in that, The method of sending a preamble signal at a random access occasion after the second validity time comprises: determining a first timing advance using the current uplink synchronization assistance information in a system message block at the random access occasion, and sending the preamble signal based on the first timing advance.

6. The method according to any one of claims 1 to 3, characterized in that, The second validity time is a starting position of a downlink subframe indicated by the second validity time.

7. A communication device, characterized by The apparatus comprises: a module for reading a non-terrestrial communication network system information block (NTNSIB) containing uplink synchronization assistance information at a first receiving time, obtaining a first validity time and a first validity time length of last satellite ephemeris and common timing advance parameter information, and calculating a first invalid time; a module for reading a new NTN SIB at a second receiving time before the first invalid time, and obtaining a second validity time of new satellite ephemeris and common timing advance parameter information; a processing module configured to determine a terminal behavior within an ambiguous time in the case of the ambiguous time. The module for performing the terminal behavior in the fuzzy time; The sending module is used for sending a preamble signal at a random access occasion after the second effective time to initiate a random access process. The fuzzy time is an interval time between the first invalid time of a last uplink synchronization assistance information and a first time, the first time is later than the first invalid time, and the first time is a time after a second effective time of current uplink synchronization assistance information minus a valid time period of the current uplink synchronization assistance information.

8. A terminal, characterized by comprising: The terminal comprises: A processor; A transceiver connected to the processor; The processor is configured to load and execute executable instructions to implement the terminal behavior determination method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores at least one instruction, at least one program, a code set or an instruction set, and the processor loads and executes the at least one instruction, the at least one program, the code set or the instruction set to implement the terminal behavior determination method according to any one of claims 1 to 6.

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