Processing method, apparatus, device, and storage medium

Abstract

The present disclosure provides a processing method, device, equipment and storage medium. The method comprises: determining that uplink signal transmission of a terminal fails in a candidate cell, and / or determining that TA of the candidate cell becomes an unavailable state, and performing first processing; the first processing is used to achieve at least one of the following: acquiring TA of the candidate cell, and stopping sending uplink signal. The method of the present disclosure provides a processing method for the case that the uplink signal transmission of the terminal fails in the candidate cell, and / or the TA of the candidate cell becomes the unavailable state, provides a deterministic reference for further action, so that the occurrence of the situation that, when the uplink signal transmission of the terminal fails in the candidate cell, and / or when the TA of the candidate cell acquired by the terminal changes from the available state to the unavailable state, the terminal does not know how to handle it, causing signal transmission interference and power loss, is avoided, and the stability of terminal communication is ensured.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to processing methods, apparatus, devices and storage media. Background Technology

[0002] In communication systems, terminals typically undergo cell handover. Network equipment usually configures multiple candidate cells for a terminal, allowing it to handover from its current serving cell to any of the candidate cells.

[0003] Before a terminal switches to a candidate cell, it typically sends an uplink signal to the network device corresponding to the candidate cell. This allows the network device to determine the Timing Advance (TA) of the candidate cell based on the uplink signal and then send the TA back to the terminal. Furthermore, when the terminal subsequently switches to the candidate cell, it can directly communicate with the network device corresponding to the candidate cell within that candidate cell based on the pre-obtained TA, without needing to repeat the process of "obtaining the TA of the candidate cell," thus improving both handover and communication efficiency.

[0004] However, currently, situations often occur where "the terminal fails to transmit uplink signals in the candidate cell, or the TA of the candidate cell obtained by the terminal changes from an available state to an unavailable state." There is an urgent need for a solution to this problem. Summary of the Invention

[0005] This disclosure provides a processing method, apparatus, device, and storage medium.

[0006] In a first aspect, embodiments of this disclosure provide a processing method, including:

[0007] If it is determined that the terminal failed to transmit uplink signals in the candidate cell, and / or if it is determined that the timing advance TA of the candidate cell becomes unavailable, the first process is executed; the first process is used to achieve at least one of the following: obtaining the TA of the candidate cell, stopping the transmission of uplink signals.

[0008] Secondly, embodiments of this disclosure provide a processing method, including:

[0009] The system receives failure information sent by the terminal; wherein the failure information is sent to the first network device when the terminal switches to the candidate cell; the failure information is used to indicate that the terminal fails to transmit uplink signals in the candidate cell, and / or the TA of the candidate cell becomes unavailable.

[0010] Thirdly, embodiments of this disclosure provide a processing method, including:

[0011] The terminal receives failure information, which indicates that the terminal failed to transmit uplink signals in the candidate cell, and / or that the TA of the candidate cell becomes unavailable.

[0012] Fourthly, embodiments of this disclosure provide a communication device, including:

[0013] The processing module is configured to determine that the terminal has failed to transmit uplink signals in the candidate cell, and / or determine that the TA of the candidate cell has become unavailable, and execute a first process; the first process is configured to perform at least one of the following: obtain the TA of the candidate cell, or stop transmitting uplink signals.

[0014] Fifthly, embodiments of this disclosure provide a communication device, including:

[0015] The transceiver module is used to receive failure information sent by the terminal; wherein the failure information is sent to the first network device when the terminal switches to the candidate cell, and the failure information is used to indicate that the uplink signal transmission of the terminal in the candidate cell has failed, and / or the TA of the candidate cell has become unavailable.

[0016] Sixthly, embodiments of this disclosure provide a communication device, including:

[0017] The transceiver module is used to receive failure information sent by the terminal, the failure information indicating that the terminal failed to transmit uplink signals in the candidate cell, and / or that the TA of the candidate cell becomes unavailable.

[0018] In a seventh aspect, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in any one of the first to third aspects.

[0019] Eighthly, embodiments of this disclosure provide a communication device including a processor and a memory, the memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method described in any one of the first to third aspects.

[0020] Ninthly, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is configured to receive code instructions and transmit them to the processor, which is configured to execute the code instructions to cause the device to perform the method described in any one of the first to third aspects.

[0021] In a tenth aspect, embodiments of this disclosure provide a communication system, which includes the communication devices described in the fourth to sixth aspects, or the communication devices described in the seventh aspect, or the communication devices described in the eighth aspect, or the communication devices described in the ninth aspect.

[0022] Eleventhly, embodiments of this disclosure provide a computer-readable storage medium for storing instructions for use by the aforementioned network device, which, when executed, cause the terminal to perform the method described in any one of the first to third aspects.

[0023] In a twelfth aspect, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the methods described in any one of the first to third aspects.

[0024] In a thirteenth aspect, this disclosure provides a chip system including at least one processor and an interface for supporting network devices in implementing the functions involved in the methods described in any one of the first to third aspects, such as determining or processing at least one of the data and information involved in the aforementioned methods. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for source and slave nodes. The chip system may be composed of chips or may include chips and other discrete devices.

[0025] In a fourteenth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the methods described in any one of the first to third aspects.

[0026] In a fifteenth aspect, embodiments of this disclosure provide a processing method, including:

[0027] The second network device sends first information to the terminal. The first information is used to determine the uplink signal configuration information associated with the candidate cell. The uplink signal configuration information is used to configure transmission resources. The transmission resources are the transmission resources used by the terminal when sending uplink signals to the first network device corresponding to the candidate cell.

[0028] The terminal sends an uplink signal to the first network device corresponding to the candidate cell based on the uplink signal configuration information.

[0029] The terminal determines that uplink signal transmission in the candidate cell has failed, and / or determines that the TA of the candidate cell has become unavailable, and performs a first process; the first process is used to achieve at least one of the following: obtaining the TA of the candidate cell, stopping uplink signal transmission. Attached Figure Description

[0030] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0031] Figure 1 This disclosure provides schematic diagrams of the architecture of some communication systems.

[0032] Figure 2 This is a schematic flowchart illustrating a processing method provided in another embodiment of this disclosure;

[0033] Figure 3 This is a schematic flowchart illustrating a processing method provided in yet another embodiment of the present disclosure;

[0034] Figure 4 This is a schematic flowchart illustrating a processing method provided in yet another embodiment of the present disclosure;

[0035] Figure 5 This is a schematic flowchart illustrating a processing method provided in yet another embodiment of the present disclosure;

[0036] Figure 6 This is a schematic flowchart illustrating a processing method provided in yet another embodiment of the present disclosure;

[0037] Figure 7 This is a flowchart illustrating a processing method provided in yet another embodiment of the present disclosure;

[0038] Figures 8a-8b This is a schematic flowchart illustrating a processing method provided in yet another embodiment of the present disclosure;

[0039] Figure 9 This is a schematic diagram of the structure of a communication device provided in one embodiment of the present disclosure;

[0040] Figure 10 This is a schematic diagram of the structure of a communication device provided in one embodiment of the present disclosure;

[0041] Figure 11 This is a schematic diagram of the structure of a communication device provided in one embodiment of the present disclosure;

[0042] Figure 12 This is a block diagram of a communication device provided in one embodiment of the present disclosure;

[0043] Figure 13 This is a schematic diagram of the structure of a chip provided in one embodiment of the present disclosure. Detailed Implementation

[0044] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of this disclosure as detailed in the appended claims.

[0045] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. The singular forms “a” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0046] It should be understood that although the terms first, second, third, etc., may be used to describe various information in embodiments of this disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first information may also be referred to as second information without departing from the scope of embodiments of this disclosure, and similarly, second information may also be referred to as first information. Depending on the context, the words “if” and “suppose” as used herein may be interpreted as “when”, “when”, or “in response to a determination”.

[0047] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting this disclosure.

[0048] To facilitate understanding, the terminology used in this application will be introduced first.

[0049] To better understand the processing method disclosed in this embodiment, the communication system to which this embodiment applies is described below.

[0050] Please see Figure 1 , Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of this disclosure. The communication system may include, but is not limited to, at least one terminal, at least one first network device, and at least one second network device. The first network device may be the network device corresponding to a candidate cell of the terminal, and the second network device may be the network device corresponding to the current serving cell of the terminal. Figure 1The number and form of devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of this disclosure. The application may include one or more terminals, or one or more first network devices, or one or more second network devices. Figure 1 The communication system shown is an example comprising a terminal, a first network device, and a second network device.

[0051] It should be noted that the technical solutions of this disclosure can be applied to various communication systems. For example, Long Term Evolution (LTE) systems, 5th Generation (5G) mobile communication systems, 5G New Radio (NR) systems, or other future new mobile communication systems.

[0052] The terminal in this disclosure can be a user-side entity used to receive or transmit signals, such as a mobile phone. The terminal can also be referred to as a terminal device (terminal), user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal can be a car with communication capabilities, a smart car, a mobile phone, a wearable device, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. This disclosure does not limit the specific technology or device form used in the terminal device.

[0053] The network devices in this disclosure (such as the first or second network device described above) are entities on the network side used for transmitting or receiving signals. For example, the network device can be an evolved NodeB (eNB), a transmission reception point (TRP), a radio remote head (RRH), a next-generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. This disclosure does not limit the specific technology or device form used in the base station. The base station provided in this disclosure can be composed of a central unit (CU) and a distributed unit (DU). The CU can also be called a control unit. Using a CU-DU structure, the base station, for example, can have its protocol layer separated. Some protocol layer functions are centrally controlled by the CU, while the remaining or all protocol layer functions are distributed in the DU, which is centrally controlled by the CU.

[0054] It is understood that the communication system described in the embodiments of this disclosure is for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and does not constitute a limitation on the technical solutions provided in the embodiments of 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 provided in the embodiments of this disclosure are also applicable to similar technical problems.

[0055] In addition, the following points are provided to facilitate understanding of the embodiments disclosed herein.

[0056] First, in this disclosure, unless contradictory, each step in any implementation or embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, the solution after removing some steps in a certain implementation or embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain implementation or embodiment can be arbitrarily interchanged. In addition, the optional methods or examples in a certain implementation or embodiment can be arbitrarily combined. Furthermore, the implementations or embodiments can be arbitrarily combined. For example, some or all steps of different implementations or embodiments can be arbitrarily combined, and a certain implementation or embodiment can be arbitrarily combined with the optional methods or examples of other implementations or embodiments.

[0057] Second, regarding the notation “A or B”, “A and / or B”, “at least one of A and B”, “A in one case, B in another case”, “in response to one case A, in response to another case B”, the following at least one scheme may be included depending on the situation: A is performed regardless of B, i.e., A in some embodiments; B is performed regardless of A, i.e., B in some embodiments; A and B are selectively performed, i.e., selected from A and B in some embodiments; A and B are both performed, i.e., A and B in some embodiments.

[0058] Third, each element, each row, or each column in the tables involved in 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.

[0059] Fourth, in some implementations or embodiments, the terms "including A", "containing A", "for indicating A", and "carrying A" in this disclosure can be interpreted as directly carrying A or indirectly indicating A.

[0060] Fifth, in some implementations or embodiments, terms such as “in response to…”, “in the case of…”, “when…”, “when…”, “if…”, etc. in this disclosure can be replaced with each other.

[0061] Optionally, the method of this disclosure can be applied to a dual connectivity (DC) system. Optionally, in a DC system, a terminal can simultaneously connect to two nodes through two cell groups. For example, the terminal can connect to the master node (MN) (or primary network device) through a master cell group (MCG) and to the secondary node (SN) (or secondary network device) through a secondary cell group (SCG). Optionally, the MCG may include one primary cell (PCell) and one or more secondary cells (SCells); the SCG includes one secondary cell (SCell) and one or more SCells, wherein the PCell and PSCell can be collectively referred to as a special cell (SpCell).

[0062] It should be understood that the DC system described above is only one optional application scenario of this disclosure, and the method of this disclosure can also be used in other communication scenarios, which this disclosure does not limit.

[0063] Figure 2This is a flowchart illustrating a processing method provided in an embodiment of the present disclosure. The method is executed by a terminal, such as... Figure 2 As shown, the processing method may include the following steps:

[0064] Step 201: Determine that the terminal's uplink signal transmission in the candidate cell has failed, and / or determine that the TA of the candidate cell has become unavailable, and perform the first processing.

[0065] Optionally, in some embodiments, the aforementioned candidate cell can be a cell that the terminal may switch to in the future. In other words, the candidate cell is not the UE's current serving cell, but a cell that the UE can access in the future.

[0066] Optionally, the candidate cell may be configured by a second network device corresponding to the terminal's current serving cell. This second network device can be understood as a network device that manages the terminal's current serving cell; the second network device can configure one or more candidate cells to the terminal. Optionally, the second network device can configure one or more candidate cells to the terminal by sending configuration information of one or more candidate cells to the terminal. Optionally, the configuration information of the candidate cell may include at least one of the following: the candidate cell's time-frequency resources, the candidate cell's cell configuration identifier, the candidate cell's cell type, and the candidate cell's triggering conditions.

[0067] Optionally, the cell configuration identifier of the aforementioned candidate cell can be used to identify the candidate cell;

[0068] Optionally, the cell types of the candidate cells mentioned above may include at least one of the following: Primary Cell (PCell); Primary Secondary Cell (PSCell); Secondary Cell (SCell); Special Cell (SpCell); Master Cell Group (MCG); Secondary Cell Group (SCG).

[0069] Optionally, the triggering conditions for the candidate cells mentioned above can be understood as follows: when a terminal meets the triggering conditions of a certain candidate cell, the terminal switches to that candidate cell. Optionally, the triggering conditions for the candidate cells may not be included in the configuration information of the candidate cells, but are predefined by the protocol.

[0070] Optionally, in some embodiments, the phrase "the candidate cell is a cell that the terminal may switch to in the future" can be understood as: the second network device will subsequently switch from the current serving cell to a candidate cell via a signaling control terminal, such as the network device switching from the current serving cell #1 to candidate cell #2 via a signaling control terminal; optionally, the signaling may include at least one of the following:

[0071] Layer 1 (L1) signaling (including Downlink Control Information (DCI) signaling);

[0072] Layer 2 (L2) signaling (such as Media Access Control-Control Element (MAC CE) signaling).

[0073] Alternatively, in some other embodiments, the above-mentioned "candidate cell is a cell that the terminal may switch to in the future" can be understood as: when the terminal meets the triggering conditions of a certain candidate cell, it switches to that candidate cell.

[0074] Therefore, in some embodiments, the candidate cell is mainly used by the terminal for cell handover changes. Optionally, in some embodiments, when the cell type of the candidate cell is PCell, the candidate cell can be used by the terminal for PCell changes; when the cell type of the candidate cell is PSCell, the candidate cell can be used by the terminal for PSCell changes; when the cell type of the candidate cell is SCell, the candidate cell can be used by the terminal for SCell changes; when the cell type of the candidate cell is SpCell, the candidate cell can be used by the terminal for SpCell changes; when the cell type of the candidate cell is MCG, the candidate cell can be used by the terminal for MCG changes; and when the cell type of the candidate cell is SCG, the candidate cell can be used by the terminal for SCG changes.

[0075] Optionally, in some embodiments, the uplink signal can be used by the first network device of the candidate cell to determine the TA of the candidate cell. The terminal sends an uplink signal to the first network device corresponding to the candidate cell, enabling the first network device to determine the TA of the candidate cell and send the TA to the terminal. This allows the terminal to directly communicate with the first network device in the candidate cell based on the pre-obtained TA when subsequently handing over to the candidate cell, without needing to perform the "obtain the TA of the candidate cell" process again, thereby improving handover and communication efficiency. Optionally, the aforementioned first network device corresponding to the candidate cell can be understood as a network device that manages the candidate cell. Optionally, the first network device and the second network device can be the same or different.

[0076] Optionally, in some embodiments, the aforementioned "failure of terminal to transmit uplink signal in candidate cell" may include at least one of the following:

[0077] After the terminal sent an uplink signal to the first network device corresponding to the candidate cell, it did not receive an acknowledgment message from the first network device.

[0078] The number of times the terminal sends uplink signals to the first network device corresponding to the candidate cell is greater than or equal to the first threshold.

[0079] Optionally, the uplink signal may include at least one of the following: a random access signal (e.g., a Physical Random Access Channel (PRACH) signal, or a preamble), or an uplink probe signal (e.g., a Sounding Reference Signal (SRS)). Optionally, when the uplink signal is a random access signal, it may also be used to initiate a random access procedure in a candidate cell.

[0080] Optionally, in some embodiments, when a terminal sends an uplink signal to a first network device, if the first network device successfully receives the uplink signal, it will send an acknowledgment to the terminal. For example, if the first network device receives the preamble after the terminal sends an uplink signal (e.g., a Preamble), it will send an acknowledgment (e.g., a Random Access Response (RAR)) to the terminal. Conversely, if the terminal does not receive an acknowledgment after sending an uplink signal, it will send the uplink signal again. Therefore, when the above-mentioned situation occurs where "the terminal sends an uplink signal to the first network device corresponding to the candidate cell but does not receive an acknowledgment from the first network device," or when the above-mentioned situation occurs where "the number of times the terminal sends an uplink signal to the first network device corresponding to the candidate cell is greater than or equal to a first threshold," it indicates that the first network device has not successfully received the uplink signal. That is, the first network device cannot determine the TA of the candidate cell, and the terminal also cannot successfully obtain the TA of the candidate cell. At this time, the terminal can perform a first process, which optionally includes at least one of the following: acquiring the TA of a candidate cell and stopping the transmission of uplink signals. When the first process is used for the TA of a subsequent candidate cell, the terminal can successfully acquire the TA of the candidate cell, thereby ensuring that when the terminal subsequently switches to the candidate cell, it can communicate directly with the first network device in the candidate cell based on the acquired TA of the candidate cell, thus improving the handover efficiency and communication efficiency. For a detailed description of the first process, please refer to the following embodiments.

[0081] Optionally, in some embodiments, the aforementioned "the TA of the candidate cell obtained by the terminal changes from an available state to an unavailable state" may include at least one of the following:

[0082] The configuration information of the candidate cells has changed;

[0083] The uplink signal configuration information associated with the candidate cell has changed;

[0084] The terminal's serving cell has changed;

[0085] The timer (such as the Time Alignment Timer, TAT) corresponding to the TA of the candidate cell times out.

[0086] Optionally, in some embodiments, the aforementioned "change in the configuration information of the candidate cell" can be understood as: the second network device reconfigured the configuration information of the candidate cell to the terminal; for example, assuming that for candidate cell #1, the configuration information of the candidate cell previously configured by the second network device was candidate cell configuration information #1, but at the current moment, the second network device reconfigured the configuration information of candidate cell #1 to candidate cell configuration information #2, then it is considered that the configuration information of candidate cell #1 has changed. Optionally, the aforementioned change in the configuration information of the candidate cell may include, for example, a change in the cell type of the candidate cell in the configuration information of the candidate cell, a change in the time-frequency resources of the candidate cell, etc.

[0087] Optionally, in some embodiments, the aforementioned uplink signal configuration information is used to configure transmission resources, which are the transmission resources used by the terminal when sending an uplink signal to the first network device corresponding to the candidate cell. For example, if candidate cell #1 is associated with uplink signal configuration information #1 and candidate cell #2 is associated with uplink signal configuration information #2, then the uplink signal configuration information #1 is used to configure the transmission resources used by the terminal when sending an uplink signal to the first network device corresponding to candidate cell #1; and the uplink signal configuration information #2 is used to configure the transmission resources used by the terminal when sending an uplink signal to the first network device corresponding to candidate cell #2.

[0088] Optionally, in some embodiments, the aforementioned transmission resources may include at least one of the following: time-domain resources (e.g., time slots); frequency-domain resources (e.g., cell configuration identifiers of candidate cells); spatial-domain resources (e.g., Synchronous Signal Block index (SSB index)); code-domain resources (e.g., Preamble index); and time-frequency numbers (e.g., PRACH occasion).

[0089] Optionally, the uplink signal configuration information may be configured to the terminal by the second network device. Optionally, the second network device may send uplink signal configuration information associated with candidate cells to the terminal through the first information; the first information may include at least one of the following: Radio Resource Control (RRC) messages, physical control information, and Media Access Control (MAC) control information; wherein, the physical control information may be, for example, PDCCH order DCI (Physical Downlink Control Channel order Downlink Control Information); and the MAC control information may be, for example, MAC CE information.

[0090] Optionally, the change in the uplink signal configuration information associated with the candidate cell can be understood as the second network device reconfiguring the uplink signal configuration information associated with the candidate cell to the terminal. For example, it can be: assuming that for candidate cell #1, the uplink signal configuration information associated with the candidate cell was previously configured as uplink signal configuration information #1, but at the current moment, the second network device reconfigures the uplink signal configuration information associated with candidate cell #1 to uplink signal configuration information #2. At this time, it is considered that the uplink signal configuration information associated with candidate cell #1 has changed.

[0091] Optionally, in some embodiments, the aforementioned change of the terminal's serving cell can be understood as: the network device controlling the change of the terminal's serving cell through signaling, or the change of the terminal's serving cell being triggered due to the fulfillment of cell triggering conditions. For a detailed description of this part, please refer to the foregoing embodiments. Optionally, the change of the terminal's serving cell can be, for example, a change in the terminal's PCell or a change in the terminal's SCG, etc.

[0092] Optionally, in some embodiments, the timer can be started when the terminal obtains the TA of the candidate cell, and when the timer expires, it indicates that the TA of the candidate cell becomes unavailable.

[0093] As can be seen from the above, after obtaining the TA of a candidate cell, if the terminal determines that the configuration information of the candidate cell has changed, or the uplink signal configuration information associated with the candidate cell has changed, or the terminal's serving cell has changed, or the timer corresponding to the TA of the candidate cell has expired, then the terminal considers the TA of the candidate cell to change from an available state to an unavailable state.

[0094] Optionally, in some embodiments, when the TA of a candidate cell obtained by the terminal changes from an available state to an unavailable state, it indicates that the TA of the candidate cell currently obtained by the terminal can no longer be used for the terminal to communicate with the first network device of the candidate cell when switching to the candidate cell. At this time, the terminal can perform a first process. Optionally, the first process is used to implement at least one of the following: obtain the TA of the candidate cell, stop sending uplink signals; wherein, when the first process is used for the TA of a subsequent candidate cell, it can enable the terminal to successfully obtain the available TA of the candidate cell, thereby ensuring that when the terminal switches to the candidate cell, it can directly communicate with the first network device in the candidate cell based on the obtained available TA of the candidate cell, thereby improving the handover efficiency and communication efficiency. A detailed description of the first process can be found in the following embodiments.

[0095] Optionally, in some embodiments, the above-described "performing the first process" may include at least one of the following:

[0096] The first process is executed based on the instructions of the second network device;

[0097] The first step will be executed according to the agreement.

[0098] Optionally, in some embodiments, the first process described above may include at least one of the following:

[0099] Sending failure information can be used to indicate that: the terminal failed to transmit uplink signals in the candidate cell, and / or the TA of the candidate cell acquired by the terminal has become unavailable;

[0100] Stop sending uplink signals to the first network device corresponding to the candidate cell;

[0101] Continue sending uplink signals to the first network device corresponding to the candidate cell;

[0102] Reserve uplink signal transmission resources;

[0103] Discard the transmission resources of the uplink signal;

[0104] Trigger the random access procedure.

[0105] Optionally, in some embodiments, the "sending failure information" in the first process described above may include at least one of the following:

[0106] Send a failure message to the first network device corresponding to the candidate cell;

[0107] Send a failure message to the second network device corresponding to the currently serving cell.

[0108] Optionally, in some embodiments, the above-mentioned "sending failure information to the first network device corresponding to the candidate cell" may include: when the terminal switches to the candidate cell, sending failure information to the first network device corresponding to the candidate cell.

[0109] For example, in some embodiments, assuming the terminal's current serving cell is cell #3, and the terminal determines that uplink signal transmission in candidate cell #4 failed (e.g., the terminal sent an uplink signal to the first network device corresponding to candidate cell #4 but did not receive an acknowledgment message), and / or determines that the TA of candidate cell #4 obtained by the terminal has become unavailable (e.g., the configuration information of candidate cell #4 has changed), the terminal does not send a failure message. Instead, when the terminal switches to candidate cell #4, it sends a failure message to the first network device corresponding to candidate cell #4. This failure message indicates that the terminal failed to obtain the TA of candidate cell #4, and / or that the TA of candidate cell #4 obtained by the terminal has become unavailable.

[0110] Optionally, in some embodiments, the above-mentioned "sending failure information to the second network device corresponding to the current serving cell" may include, for example, sending failure information to the second network device (i.e., the master node to which the terminal is connected) corresponding to the MCG in the current serving cell.

[0111] Optionally, in some embodiments, the aforementioned "failure information" may include at least one of the following: triggering reason, purpose of candidate cell, purpose of uplink signal, first cell indication, and second cell indication.

[0112] Optionally, the triggering reason mentioned above can be: the reason for triggering the transmission failure information; the triggering reason may include: the terminal fails to transmit the uplink signal in the candidate cell, and / or the TA of the candidate cell obtained by the terminal becomes unavailable.

[0113] Optionally, the aforementioned candidate cells can be used for PCell changes or PSCell changes, for example.

[0114] Optionally, the purpose of the aforementioned uplink signal may be, for example, to obtain the TA of a candidate cell, and / or to trigger a random access procedure;

[0115] Optionally, the first cell indication mentioned above can be used to indicate: a candidate cell that has not acquired a TA, and / or a candidate cell whose TA has become unavailable; for example, the first cell indication can be used to indicate the aforementioned "candidate cell #4";

[0116] Optionally, the aforementioned second cell indication can be used to indicate: the serving cell of the terminal when the uplink signal transmission of the candidate cell fails, and / or when the TA of the candidate cell obtained by the terminal changes from an available state to an unavailable state; for example, the second cell indication can be used to indicate the aforementioned "cell #3".

[0117] Optionally, in some embodiments, the aforementioned first cell indication may include at least one of the following:

[0118] The community configuration identifier of the indicated community;

[0119] The community group configuration identifier of the indicated community;

[0120] The community signage of the indicated community;

[0121] The community group identifier of the indicated community.

[0122] Optionally, in some embodiments, the aforementioned second cell indication may include at least one of the following:

[0123] The community configuration identifier of the indicated community;

[0124] The community group configuration identifier of the indicated community;

[0125] The community signage of the indicated community;

[0126] The community group identifier of the indicated community.

[0127] Optionally, in some embodiments, the "continuing to send uplink signals to the first network device corresponding to the candidate cell" in the first process described above may include: continuing to send uplink signals to the first network device based on the uplink signal configuration information associated with the candidate cell. Optionally, in some embodiments, when the first process is triggered due to a "change in the uplink signal configuration information associated with the candidate cell," the terminal may continue to send uplink signals to the first network device based on the latest uplink signal configuration information associated with the candidate cell configured by the second network device. Optionally, the method by which the terminal sends uplink signals to the first network device based on the uplink signal configuration information may include: the terminal sending uplink signals to the first network device on the transmission resources configured in the uplink signal configuration information.

[0128] Optionally, in some embodiments, the "triggering a random access procedure" in the first process described above may include at least one of the following:

[0129] Trigger a random access procedure in the candidate cell;

[0130] A random access procedure is triggered in the terminal's current serving cell.

[0131] Optionally, in some embodiments, the above-mentioned "triggering a random access procedure in a candidate cell" can be: sending a random access signal to the first network device corresponding to the candidate cell;

[0132] Optionally, in some embodiments, the above-mentioned "triggering a random access procedure in the current serving cell of the terminal" can be: sending a random access signal to the second network device corresponding to the current serving cell of the terminal; Optionally, in some embodiments, the terminal may trigger a random access procedure in the current serving cell only when the current serving cell and the candidate cell share the TA.

[0133] As mentioned above, the random access signal is the uplink signal. Therefore, "triggering the random access process" here can be understood as continuing to send uplink signals.

[0134] Furthermore, in some embodiments, the aforementioned "triggering a random access procedure in the terminal's current serving cell" may include at least one of the following:

[0135] A random access procedure is triggered in the primary cell of the currently serving cell;

[0136] In the current serving cell, a random access procedure is triggered in a cell whose cell type is the same as that of the candidate cell;

[0137] A random access procedure is triggered in a cell whose cell group type is the same as that of the candidate cell in the current serving cell.

[0138] For example, assuming no candidate cell for TA is acquired, and / or the candidate cell for which TA becomes unavailable has a cell type of PCell or a cell group type of MCG, the terminal should trigger a random access procedure in the PCell of the currently serving MCG; or, assuming no candidate cell for TA is acquired, and / or the candidate cell for which TA becomes unavailable has a cell type of PSCell or a cell group type of SCG, the terminal should trigger a random access procedure in the PSCell of the currently serving SCG.

[0139] In summary, in one embodiment of this disclosure, in response to the terminal's uplink signal transmission failure in a candidate cell, and / or in response to the TA (Transmission Aspect Ratio) of the candidate cell obtained by the terminal changing from an available state to an unavailable state, the terminal performs a first processing step. Therefore, this disclosure provides a processing method for the situations where "the terminal's uplink signal transmission fails in a candidate cell, and / or in response to the TA of the candidate cell obtained by the terminal changing from an available state to an unavailable state," providing a deterministic reference for further actions. This avoids the situation where "when the terminal's uplink signal transmission fails in a candidate cell, and / or when the TA of the candidate cell obtained by the terminal changes from an available state to an unavailable state, signal transmission interference and power loss occur because the terminal does not know how to process the signal," thus ensuring the stability of terminal communication.

[0140] Figure 3This is a flowchart illustrating a processing method provided in an embodiment of the present disclosure. The method is executed by a terminal, such as... Figure 3 As shown, the processing method may include the following steps:

[0141] Step 301: Determine the uplink signal configuration information associated with the candidate cells;

[0142] Optionally, determining the uplink signal configuration information associated with the candidate cell may include:

[0143] The terminal receives first information sent by the second network device. This first information is used to determine the uplink signal configuration information associated with the candidate cell. Based on this first information, the terminal can determine the uplink signal configuration information associated with the candidate cell.

[0144] Optionally, in some embodiments, the first information may carry uplink signal configuration information associated with the candidate cell. Optionally, the first information includes at least one of the following:

[0145] RRC message;

[0146] Physical control information;

[0147] MAC control information.

[0148] Step 302: Send an uplink signal to the first network device corresponding to the candidate cell based on the uplink signal configuration information.

[0149] Optionally, the uplink signal configuration information may be: the uplink signal configuration information associated with the candidate cell corresponding to the first network device.

[0150] Step 303: Receive the second information sent by the first network device, which is used to determine the TA of the candidate cell.

[0151] Optionally, the second information may be determined by the first network device based on the uplink signal sent by the terminal.

[0152] Step 304: Determine the TA of the candidate cell based on the second information.

[0153] Optionally, in some embodiments, the terminal may send the uplink signal to the candidate cell before it switches to the candidate cell, so that it can obtain the TA of the candidate cell in advance before switching to the candidate cell. Thus, when the terminal switches to the candidate cell later, it can communicate directly with the first network device in the candidate cell based on the TA of the candidate cell obtained in advance, without having to perform the process of "obtaining the TA of the candidate cell" again, thereby improving the handover efficiency and communication efficiency.

[0154] For example, in some embodiments, the terminal can send the uplink signal to the candidate cell before it obtains L1 signaling or L2 signaling. For details regarding L1 and L2 signaling, please refer to the descriptions in the above embodiments.

[0155] For a detailed description of steps 301-304, please refer to the above embodiment description.

[0156] Optionally, steps 303 and 304 above are optional steps. Optionally, in some embodiments, when the terminal fails to transmit uplink signals in the candidate cell in step 302, Figure 3 The method in this embodiment may include only steps 301-302, excluding steps 303 and 304; alternatively, in another embodiment, when the terminal successfully transmits the uplink signal in the candidate cell in step 302, Figure 3 The method in the embodiment may include steps 301-304.

[0157] In summary, in one embodiment of this disclosure, the terminal sends an uplink signal to the first network device corresponding to the candidate cell based on the uplink signal configuration information associated with the candidate cell, and receives the TA of the candidate cell sent by the first network device. Thus, when the terminal subsequently switches to the candidate cell, it can directly communicate with the first network device in the candidate cell based on the TA of the candidate cell obtained in advance, without having to perform the process of "obtaining the TA of the candidate cell" again, thereby improving the handover efficiency and communication efficiency.

[0158] Figure 4 This is a flowchart illustrating a processing method provided in an embodiment of the present disclosure. The method is executed by a first network device, such as... Figure 4 As shown, the processing method may include the following steps:

[0159] Step 401: Receive the failure information sent by the terminal.

[0160] Optionally, the failure information is sent to the first network device when the terminal switches to the candidate cell; the failure information is used to indicate that the terminal failed to transmit the uplink signal in the candidate cell, and / or that the TA of the candidate cell becomes unavailable.

[0161] Optionally, the failure message includes at least one of the following:

[0162] Triggering reasons; Triggering reasons include: the terminal fails to transmit uplink signals in the candidate cell, and / or the TA of the candidate cell becomes unavailable;

[0163] The purpose of candidate cells;

[0164] The purpose of uplink signals;

[0165] First cell indication, the first cell indication is used to indicate: candidate cells that have not acquired TA, and / or candidate cells whose TA has become unavailable;

[0166] Second cell indication, the second cell indication is used to indicate: when the terminal fails to transmit uplink signal in the candidate cell, and / or when the TA of the candidate cell becomes unavailable, the terminal's serving cell.

[0167] Optionally, the first cell indication includes at least one of the following:

[0168] The community configuration identifier of the indicated community;

[0169] The community group configuration identifier of the indicated community;

[0170] The community signage of the indicated community;

[0171] The community group identifier of the indicated community;

[0172] The second-cell instruction includes at least one of the following:

[0173] The community configuration identifier of the indicated community;

[0174] The community group configuration identifier of the indicated community;

[0175] The community signage of the indicated community;

[0176] The community group identifier of the indicated community.

[0177] For a detailed description of step 401, please refer to the above embodiment.

[0178] In summary, in one embodiment of this disclosure, in response to the terminal's uplink signal transmission failure in a candidate cell, and / or in response to the TA (Transmission Address) of the candidate cell obtained by the terminal changing from an available state to an unavailable state, the terminal sends a failure message to the first network device. Therefore, this disclosure provides a processing method for the situations where "the terminal's uplink signal transmission fails in a candidate cell, and / or in response to the TA of the candidate cell obtained by the terminal changing from an available state to an unavailable state," providing a deterministic reference for further actions. This avoids the situation where "when the terminal's uplink signal transmission fails in a candidate cell, and / or when the TA of the candidate cell obtained by the terminal changes from an available state to an unavailable state, signal transmission interference and power loss occur because the terminal does not know how to handle the situation," thus ensuring the stability of terminal communication.

[0179] Figure 5 This is a flowchart illustrating a processing method provided in an embodiment of the present disclosure. The method is executed by a first network device, such as... Figure 5As shown, the processing method may include the following steps:

[0180] Step 501: Receive the uplink signal sent by the terminal;

[0181] Step 502: Calculate the TA of candidate cells based on uplink signals;

[0182] Step 503: Send second information to the terminal, which is used to determine the TA of the candidate cell.

[0183] For a detailed description of steps 501-503, please refer to the above embodiment description.

[0184] In summary, in one embodiment of this disclosure, the first network device receives the uplink signal sent by the terminal and calculates the TA of the candidate cell based on the uplink signal. Then, it sends the TA of the candidate cell to the terminal. Thus, when the terminal subsequently switches to the candidate cell, it can communicate directly with the first network device in the candidate cell based on the TA of the candidate cell obtained in advance, without having to perform the process of "obtaining the TA of the candidate cell" again, thereby improving the handover efficiency and communication efficiency.

[0185] Figure 6 This is a flowchart illustrating a processing method provided in an embodiment of the present disclosure. The method is executed by a second network device, such as... Figure 6 As shown, the processing method may include the following steps:

[0186] Step 601: Receive the failure information sent by the terminal.

[0187] Optionally, the failure information is used to indicate that: the terminal failed to transmit uplink signals in the candidate cell, and / or the TA of the candidate cell becomes unavailable.

[0188] For a detailed description of step 601, please refer to the above embodiment.

[0189] In summary, in one embodiment of this disclosure, in response to the terminal's uplink signal transmission failure in a candidate cell, and / or in response to the TA (Transmission Address Translation) of the candidate cell obtained by the terminal changing from an available state to an unavailable state, the terminal sends a failure message to the second network device. Therefore, this disclosure provides a processing method for the situations where "the terminal's uplink signal transmission fails in a candidate cell, and / or in response to the TA of the candidate cell obtained by the terminal changing from an available state to an unavailable state," providing a deterministic reference for further actions. This avoids the situation where "when the terminal's uplink signal transmission fails in a candidate cell, and / or when the TA of the candidate cell obtained by the terminal changes from an available state to an unavailable state, signal transmission interference and power loss occur because the terminal does not know how to handle the situation," thus ensuring the stability of terminal communication.

[0190] Figure 7 This is a flowchart illustrating a processing method provided in an embodiment of the present disclosure. The method is executed by a second network device, such as... Figure 7 As shown, the processing method may include the following steps:

[0191] Step 701: Send first information to the terminal, which is used to determine the uplink signal configuration information associated with the candidate cell.

[0192] Optionally, the uplink signal configuration information is used to configure transmission resources, which are the transmission resources used by the terminal when sending uplink signals to the first network device corresponding to the candidate cell.

[0193] For a detailed description of step 701, please refer to the above embodiment.

[0194] In summary, in one embodiment of this disclosure, the second device sends uplink signal configuration information associated with the candidate cell to the terminal. This uplink signal configuration information is used to configure the transmission resources used by the terminal when sending uplink signals to the first network device corresponding to the candidate cell. Therefore, the terminal can send uplink signals to the first network device corresponding to the candidate cell based on the uplink signal configuration information associated with the candidate cell. The first network device then determines the transfer condition (TA) of the candidate cell based on the uplink signal and sends it to the terminal. Subsequently, when the terminal hands over to the candidate cell, it can directly communicate with the first network device in the candidate cell based on the pre-obtained TA of the candidate cell, without having to perform the "obtain TA of the candidate cell" process again, thereby improving handover efficiency and communication efficiency.

[0195] Figure 8a This is a flowchart illustrating a processing method provided in an embodiment of the present disclosure, as shown below. Figure 8a As shown, the processing method may include the following steps:

[0196] Step 801a: The second network device sends first information to the terminal, which is used to determine the uplink signal configuration information associated with the candidate cell of the terminal.

[0197] Optionally, the uplink signal configuration information can be used to configure transmission resources, wherein the transmission resources are the transmission resources used by the terminal when sending an uplink signal to the first network device corresponding to the candidate cell.

[0198] Step 802a: The terminal sends an uplink signal to the first network device corresponding to the candidate cell based on the uplink signal configuration information.

[0199] Step 803a: The terminal determines that the uplink signal transmission in the candidate cell has failed, and / or determines that the TA of the candidate cell has changed from an available state to an unavailable state, and performs the first process.

[0200] Optionally, the first process can be used to achieve at least one of the following: obtaining the TA of the candidate cell, or stopping the transmission of uplink signals.

[0201] For a detailed description of steps 801a-803a, please refer to the above embodiments.

[0202] In summary, in one embodiment of this disclosure, a first process is executed in response to the terminal's uplink signal transmission failure in a candidate cell, and / or in response to the TA (Transmission Aspect Ratio) of the candidate cell obtained by the terminal changing from an available state to an unavailable state. Therefore, this disclosure provides a processing method for the situations where "the terminal's uplink signal transmission fails in a candidate cell, and / or the TA of the candidate cell obtained by the terminal changes from an available state to an unavailable state," providing a deterministic reference for further actions. This avoids the situation where "when the terminal's uplink signal transmission fails in a candidate cell, and / or when the TA of the candidate cell obtained by the terminal changes from an available state to an unavailable state, signal transmission interference and power loss occur because the terminal does not know how to handle the situation," thus ensuring the stability of terminal communication.

[0203] Figure 8b This is a flowchart illustrating a processing method provided in an embodiment of the present disclosure, as shown below. Figure 8b As shown, the processing method may include the following steps:

[0204] Step 801b: The second network device sends first information to the terminal, which is used to determine the uplink signal configuration information associated with the candidate cell of the terminal.

[0205] Step 802b: The terminal sends an uplink signal to the first network device corresponding to candidate cell #1 based on the uplink signal configuration information associated with candidate cell #1, in order to obtain the TA of candidate cell #1.

[0206] Step 803b: The terminal determines that the uplink signal transmission in candidate cell #1 has failed, and / or determines that the TA of candidate cell #1 has become unavailable, and continues to send uplink signals to the first network device corresponding to candidate cell #1 in order to obtain the TA of candidate cell #1.

[0207] For a detailed description of "continuing to send uplink signals to the first network device corresponding to candidate cell #1", please refer to the above embodiment description.

[0208] Step 804b: The terminal determines that the uplink signal transmission in candidate cell #1 has failed, and / or determines that the TA of candidate cell #1 has become unavailable, and sends an uplink signal to the first network device corresponding to candidate cell #2 based on the uplink signal configuration information associated with candidate cell #2, in order to obtain the TA of candidate cell #2.

[0209] Optionally, in some embodiments, after step 802b or step 803b is executed, if the terminal successfully sends an uplink signal in candidate cell #1 (that is, the terminal obtains the TA of candidate cell #1), and / or the terminal determines that the TA of candidate cell #1 has not become unavailable, the terminal may also send an uplink signal to the first network device corresponding to candidate cell #2 based on the uplink signal configuration information associated with candidate cell #2 in order to obtain the TA of candidate cell #2.

[0210] Figure 9 This is a schematic diagram of the structure of a communication device provided in an embodiment of the present disclosure, as shown below. Figure 9 As shown, the device may include:

[0211] The processing module is configured to determine that the terminal has failed to transmit uplink signals in the candidate cell, and / or determine that the TA of the candidate cell has become unavailable, and execute a first process; the first process is configured to perform at least one of the following: obtain the TA of the candidate cell, or stop transmitting uplink signals.

[0212] In summary, in the communication apparatus provided in the embodiments of this disclosure, a first process is performed in response to the failure of uplink signal transmission by the terminal in a candidate cell, and / or in response to the change of the TA (Transmission Aspect Ratio) of the candidate cell obtained by the terminal from an available state to an unavailable state. Therefore, this disclosure provides a processing method for the situations where "the terminal fails to transmit uplink signal in a candidate cell, and / or the TA of the candidate cell obtained by the terminal changes from an available state to an unavailable state," providing a deterministic reference for further actions. This avoids the situation where "when the terminal fails to transmit uplink signal in a candidate cell, and / or when the TA of the candidate cell obtained by the terminal changes from an available state to an unavailable state, signal transmission interference and power loss occur because the terminal does not know how to process the signal," thus ensuring the stability of terminal communication.

[0213] Optionally, in one embodiment of this disclosure, the failure of the terminal to transmit uplink signals in a candidate cell includes at least one of the following:

[0214] After the terminal sent an uplink signal to the first network device corresponding to the candidate cell, it did not receive an acknowledgment message from the first network device.

[0215] The number of times the terminal sends uplink signals to the first network device corresponding to the candidate cell is greater than or equal to a first threshold.

[0216] Optionally, in one embodiment of this disclosure, the TA of the candidate cell becomes unavailable, including at least one of the following:

[0217] The configuration information of the candidate cell has changed, wherein the configuration information of the candidate cell is used to configure the candidate cell;

[0218] The uplink signal configuration information associated with the candidate cell has changed; wherein, the uplink signal configuration information is used to configure transmission resources, and the transmission resources are: the transmission resources used by the terminal when sending uplink signals to the first network device corresponding to the candidate cell;

[0219] The serving cell of the terminal has changed;

[0220] The timer corresponding to the TA of the candidate cell times out; wherein the timer is started when the terminal obtains the TA of the candidate cell.

[0221] Optionally, in one embodiment of this disclosure, the processing module is further configured to perform at least one of the following:

[0222] The first process is executed based on the instruction of the second network device; the second network device is the network device corresponding to the current serving cell of the terminal.

[0223] The first process will be executed according to the agreement.

[0224] Optionally, in one embodiment of this disclosure, the processing module is further configured to perform at least one of the following:

[0225] Sending failure information, the failure information being used to indicate that: the terminal failed to transmit uplink signals in the candidate cell, and / or, the TA of the candidate cell becomes unavailable;

[0226] Stop sending the uplink signal to the first network device corresponding to the candidate cell;

[0227] Continue sending the uplink signal to the first network device corresponding to the candidate cell;

[0228] Reserve the transmission resources of the uplink signal;

[0229] Discard the transmission resources of the uplink signal;

[0230] A PRACH signal is sent in the candidate cell to trigger a random access procedure in the candidate cell;

[0231] The terminal sends a PRACH signal in its current serving cell to trigger a random access procedure in that cell.

[0232] Optionally, in one embodiment of this disclosure, the processing module is further configured to perform at least one of the following:

[0233] Send the failure information to the first network device corresponding to the candidate cell;

[0234] The failure information is sent to the second network device corresponding to the currently serving cell.

[0235] Optionally, in one embodiment of this disclosure, the processing module is further configured to:

[0236] When the terminal switches to the candidate cell, it sends the failure information to the first network device corresponding to the candidate cell.

[0237] Optionally, in one embodiment of this disclosure, the failure information includes at least one of the following:

[0238] The triggering reasons include: the terminal fails to transmit uplink signals in the candidate cell, and / or the TA of the candidate cell becomes unavailable;

[0239] The purpose of the candidate cells;

[0240] The purpose of uplink signals;

[0241] First cell indication, the first cell indication is used to indicate: candidate cells that have not acquired TA, and / or candidate cells whose TA has become unavailable;

[0242] The second cell indication is used to indicate the serving cell of the terminal when the uplink signal transmission of the candidate cell fails, and / or when the TA of the candidate cell becomes unavailable.

[0243] Optionally, in one embodiment of this disclosure, the first cell indication includes at least one of the following:

[0244] The community configuration identifier of the indicated community;

[0245] The community group configuration identifier of the indicated community;

[0246] The community signage of the indicated community;

[0247] The community group identifier of the indicated community;

[0248] The second cell indication includes at least one of the following:

[0249] The community configuration identifier of the indicated community;

[0250] The community group configuration identifier of the indicated community;

[0251] The community signage of the indicated community;

[0252] The community group identifier of the indicated community.

[0253] Optionally, in one embodiment of this disclosure, the processing module is further configured to:

[0254] The uplink signal is sent to the first network device based on the uplink signal configuration information, wherein the uplink signal configuration information is associated with the candidate cell corresponding to the first network device.

[0255] Optionally, in one embodiment of this disclosure, the apparatus is further configured to:

[0256] Determine the uplink signal configuration information associated with the candidate cells;

[0257] Based on the uplink signal configuration information, an uplink signal is sent to the first network device corresponding to the candidate cell.

[0258] Optionally, in one embodiment of this disclosure, the apparatus is further configured to:

[0259] Receive first information sent by the second network device, the first information being used to determine the uplink signal configuration information;

[0260] The uplink signal configuration information is determined based on the first information.

[0261] Optionally, in one embodiment of this disclosure, the first information includes at least one of the following:

[0262] Radio Resource Control (RRC) messages;

[0263] Physical control information;

[0264] Media access control (MAC) information.

[0265] Optionally, in one embodiment of this disclosure, the apparatus is further configured to:

[0266] Receive second information sent by the first network device, the second information being used to determine the TA of the candidate cell;

[0267] The TA of the candidate cell is determined based on the second information.

[0268] Optionally, in one embodiment of this disclosure, the uplink signal includes at least one of the following:

[0269] PRACH signal;

[0270] Detection reference signal SRS.

[0271] Figure 10 This is a schematic diagram of the structure of a communication device provided in an embodiment of the present disclosure, as shown below. Figure 10 As shown, the device may include:

[0272] The transceiver module is used to receive failure information sent by the terminal; wherein the failure information is sent to the first network device when the terminal switches to the candidate cell, and the failure information is used to indicate that the uplink signal transmission of the terminal in the candidate cell has failed, and / or the TA of the candidate cell has become unavailable.

[0273] In summary, in the communication apparatus provided in the embodiments of this disclosure, in response to the failure of the terminal to transmit uplink signals in a candidate cell, and / or in response to the TA of the candidate cell obtained by the terminal changing from an available state to an unavailable state, the terminal sends a failure message to the first network device. Therefore, this disclosure provides a processing method for the situations where "the terminal fails to transmit uplink signals in a candidate cell, and / or in response to the TA of the candidate cell obtained by the terminal changing from an available state to an unavailable state," providing a deterministic reference for further actions. This avoids the situation where "when the terminal fails to transmit uplink signals in a candidate cell, and / or when the TA of the candidate cell obtained by the terminal changes from an available state to an unavailable state, signal transmission interference and power loss occur because the terminal does not know how to handle the situation," thus ensuring the stability of terminal communication.

[0274] Optionally, in one embodiment of this disclosure, the failure information includes at least one of the following:

[0275] Triggering reasons; the triggering reasons include: the terminal fails to transmit uplink signals in the candidate cell, and / or the TA of the candidate cell becomes unavailable;

[0276] The purpose of the candidate cells;

[0277] The purpose of uplink signals;

[0278] First cell indication, the first cell indication is used to indicate: candidate cells that have not acquired TA, and / or candidate cells whose TA has become unavailable;

[0279] The second cell indication is used to indicate the serving cell of the terminal when the uplink signal transmission of the candidate cell fails, and / or when the TA of the candidate cell becomes unavailable.

[0280] Optionally, in one embodiment of this disclosure, the first cell indication includes at least one of the following:

[0281] The community configuration identifier of the indicated community;

[0282] The community group configuration identifier of the indicated community;

[0283] The community signage of the indicated community;

[0284] The community group identifier of the indicated community;

[0285] The second cell indication includes at least one of the following:

[0286] The community configuration identifier of the indicated community;

[0287] The community group configuration identifier of the indicated community;

[0288] The community signage of the indicated community;

[0289] The community group identifier of the indicated community.

[0290] Optionally, in one embodiment of this disclosure, the apparatus is further configured to:

[0291] Receive the uplink signal sent by the terminal;

[0292] The TA of the candidate cell is calculated based on the uplink signal;

[0293] The second information is sent to the terminal, and the second information is used to determine the TA of the candidate cell.

[0294] Figure 11 This is a schematic diagram of the structure of a communication device provided in an embodiment of the present disclosure, as shown below. Figure 11 As shown, the device may include:

[0295] The transceiver module is used to receive failure information sent by the terminal, the failure information indicating that the terminal failed to transmit uplink signals in the candidate cell, and / or that the TA of the candidate cell becomes unavailable.

[0296] In summary, in the communication apparatus provided in the embodiments of this disclosure, in response to the failure of the terminal to transmit uplink signals in a candidate cell, and / or in response to the change of the TA (Transmission Aspect Ratio) of the candidate cell obtained by the terminal from an available state to an unavailable state, the terminal sends a failure message to the second network device. Therefore, this disclosure provides a processing method for the situations where "the terminal fails to transmit uplink signals in a candidate cell, and / or in response to the change of the TA of the candidate cell obtained by the terminal from an available state to an unavailable state," providing a deterministic reference for further actions. This avoids the situation where "when the terminal fails to transmit uplink signals in a candidate cell, and / or when the TA of the candidate cell obtained by the terminal changes from an available state to an unavailable state, signal transmission interference and power loss occur because the terminal does not know how to handle the situation," thus ensuring the stability of terminal communication.

[0297] Optionally, in one embodiment of this disclosure, the apparatus is further configured to:

[0298] The terminal sends first information, which is used to determine the uplink signal configuration information associated with the candidate cell; the uplink signal configuration information is used to configure transmission resources, which are the transmission resources used by the terminal when sending uplink signals to the first network device corresponding to the candidate cell.

[0299] Optionally, in one embodiment of this disclosure, the first information includes at least one of the following:

[0300] RRC message;

[0301] Physical control information;

[0302] MAC control information.

[0303] Please see Figure 12 , Figure 12 This is a schematic diagram of the structure of a communication device 1200 provided in an embodiment of this disclosure. The communication device 1200 can be a base station, a terminal, or a chip, chip system, or processor that supports the base station in implementing the above methods; it can also be a chip, chip system, or processor that supports the terminal in implementing the above methods. This device can be used to implement the methods described in the above method embodiments, and specific details can be found in the descriptions of the above method embodiments.

[0304] The communication device 1200 may include one or more processors 1201. The processor 1201 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the communication device (e.g., base station, baseband chip, terminal, terminal chip, DU or CU, etc.), execute computer programs, and process data from the computer programs.

[0305] Optionally, the communication device 1200 may further include one or more memories 1202, which may store a computer program 1204. The processor 1201 executes the computer program 1204 to cause the communication device 1200 to perform the method described in the above method embodiments. Optionally, the memory 1202 may also store data. The communication device 1200 and the memory 1202 may be provided separately or integrated together.

[0306] Optionally, the communication device 1200 may further include a transceiver 1205 and an antenna 1206. The transceiver 1205 may be referred to as a transceiver unit, transceiver, or transceiver circuit, etc., and is used to implement the transmission and reception functions. The transceiver 1205 may include a receiver and a transmitter. The receiver may be referred to as a receiver or receiving circuit, etc., and is used to implement the receiving function; the transmitter may be referred to as a transmitter or transmitting circuit, etc., and is used to implement the transmitting function.

[0307] Optionally, the communication device 1200 may further include one or more interface circuits 1207. The interface circuits 1207 are used to receive code instructions and transmit them to the processor 1201. The processor 1201 executes the code instructions to cause the communication device 1200 to perform the methods described in the above method embodiments.

[0308] In one implementation, the processor 1201 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing receiving and transmitting functions may be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit can be used for reading and writing code / data, or it can be used for transmitting or relaying signals.

[0309] In one implementation, processor 1201 may store computer program 1203, which runs on processor 1201 and causes communication device 1200 to perform the methods described in the above method embodiments. Computer program 1203 may be embedded in processor 1201, in which case processor 1201 may be implemented in hardware.

[0310] In one implementation, the communication device 1200 may include circuitry capable of performing the functions of transmitting, receiving, or communicating as described in the foregoing method embodiments. The processor and transceiver described in this disclosure can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductors (CMOS), n-metal-oxide-semiconductor (NMOS), positive-channel metal oxide semiconductors (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon-germanium (SiGe), gallium arsenide (GaAs), etc.

[0311] The communication device described in the above embodiments may be a base station or a terminal, but the scope of the communication device described in this disclosure is not limited thereto, and the structure of the communication device may vary. Figure 12 The communication device may be a standalone device or part of a larger device. For example, the communication device may be:

[0312] (1) A standalone integrated circuit IC, or chip, or chip system or subsystem; (2) A collection of one or more ICs, which may optionally include storage components for storing data or computer programs; (3) An ASIC, such as a modem; (4) A module that can be embedded in other devices; (5) A receiver, terminal, smart terminal, cellular phone, wireless device, handheld device, mobile unit, vehicle-mounted device, base station, cloud device, artificial intelligence device, etc.; (6) Others, etc.

[0313] For cases where the communication device can be a chip or a chip system, please refer to [link / reference]. Figure 13 The diagram shows the structure of the chip. Figure 13 The chip shown includes a processor 1301 and an interface 1302. There can be one or more processors 1301, and multiple interfaces 1302.

[0314] Optionally, the chip also includes a memory 1303 for storing necessary computer programs and data.

[0315] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this disclosure can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented in hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the described functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this disclosure.

[0316] This disclosure also provides a readable storage medium having instructions stored thereon that, when executed by a computer, implement the functions of any of the above method embodiments.

[0317] This disclosure also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

[0318] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program can be transferred from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0319] Those skilled in the art will understand that the various numerical designations such as "first" and "second" used in this disclosure are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this disclosure.

[0320] At least one of the features described in this disclosure can also be described as one or more, and multiple features can be two, three, four or more, and this disclosure does not impose any limitations. In the embodiments of this disclosure, for a technical feature, the technical features in that technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no sequential order or size order among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0321] The correspondences shown in the tables of this disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values; this disclosure is not limiting. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondences shown in some rows of the tables in this disclosure may not be configured. Furthermore, appropriate modifications and adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the headers of the above tables can also use other names that the communication device can understand, and the values ​​or representations of the parameters can also be other values ​​or representations that the communication device can understand. In the implementation of the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables, etc.

[0322] The predefined terms in this disclosure can be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0323] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0324] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0325] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A processing method, characterized in that, The method is executed by a terminal, wherein the terminal's current serving cell corresponds to a second network device, and the candidate cell corresponds to a first network device. The method includes: The terminal receives first information sent by the second network device. The first information is used to determine the uplink signal configuration information associated with the candidate cell. The uplink signal configuration information is used to configure transmission resources. The transmission resources are the transmission resources used by the terminal when sending a sounding reference signal (SRS) to the first network device. The uplink signal configuration information is determined based on the first information; Based on the uplink signal configuration information, the probe reference signal (SRS) is sent to the first network device; Receive second information sent by the first network device, the second information being used to determine the timing advance (TA) of the candidate cell; The TA of the candidate cell is determined based on the second information; When it is determined that the uplink signal configuration information associated with the candidate cell has changed, it is determined that the TA of the candidate cell becomes unavailable; When it is determined that the TA of the candidate cell becomes unavailable, a failure message is sent to the second network device, and the transmission of the probe reference signal (SRS) to the first network device is stopped.

2. The method as described in claim 1, characterized in that, The method includes at least one of the following: After the terminal sends the detection reference signal (SRS) to the first network device corresponding to the candidate cell, it does not receive confirmation information from the first network device. The number of times the terminal sends the probe reference signal (SRS) to the first network device corresponding to the candidate cell is greater than or equal to a first threshold.

3. The method as described in claim 1, characterized in that, The candidate cell's TA becoming unavailable also includes at least one of the following: The configuration information of the candidate cell has changed, wherein the configuration information of the candidate cell is used to configure the candidate cell; The serving cell of the terminal has changed; The timer corresponding to the TA of the candidate cell times out; wherein the timer is started when the terminal obtains the TA of the candidate cell.

4. The method according to any one of claims 1-3, characterized in that, The method further includes: The first process is executed based on the instructions or protocol of the second network device; The execution of the first process includes at least one of the following: Reserve the transmission resources of the uplink signal; Discard the transmission resources of the uplink signal; A PRACH signal is sent in the candidate cell to trigger a random access procedure in the candidate cell; The terminal sends a PRACH signal in its current serving cell to trigger a random access procedure in that cell.

5. The method as described in any one of claims 1-3, characterized in that, The failure information includes at least one of the following: The triggering reasons include: the terminal fails to transmit uplink signals in the candidate cell, and / or the TA of the candidate cell becomes unavailable; The purpose of the candidate cells; The purpose of uplink signals; First cell indication, the first cell indication is used to indicate: candidate cells that have not acquired TA, and / or candidate cells whose TA has become unavailable; The second cell indication is used to indicate the serving cell of the terminal when the uplink signal transmission of the candidate cell fails, and / or when the TA of the candidate cell becomes unavailable.

6. The method as described in claim 5, characterized in that, The first cell indication includes at least one of the following: The community configuration identifier of the indicated community; The community group configuration identifier of the indicated community; The community signage of the indicated community; The community group identifier of the indicated community; The second cell indication includes at least one of the following: The community configuration identifier of the indicated community; The community group configuration identifier of the indicated community; The community signage of the indicated community; The community group identifier of the indicated community.

7. The method as described in claim 1, characterized in that, The first information includes at least one of the following: Radio Resource Control (RRC) messages; Physical control information; Media access control (MAC) information.

8. A processing method, characterized in that, Performed by a first network device, wherein the first network device is the network device corresponding to the candidate cell of the terminal, the method includes: The terminal receives a probe reference signal (SRS) sent by the terminal based on uplink signal configuration information associated with candidate cells; the uplink signal configuration information is determined based on first information sent by a second network device received by the terminal, the second network device being the network device corresponding to the terminal's current serving cell; the uplink signal configuration information is used to configure transmission resources, the transmission resources being the transmission resources used by the terminal when sending the probe reference signal (SRS) to the first network device; The terminal sends second information, which is used to determine the timing advance TA of the candidate cell. When the uplink signal configuration information associated with the candidate cell changes, the timing advance TA becomes unavailable so that the terminal device sends failure information to the second network device and stops sending the probe reference signal SRS to the first network device.

9. The method as described in claim 8, characterized in that, The failure information includes at least one of the following: Triggering reasons; the triggering reasons include: the TA of the candidate cell becomes unavailable; The purpose of the candidate cells; The purpose of uplink signals; First cell indication, the first cell indication is used to indicate: candidate cells that have not acquired TA, and / or candidate cells whose TA has become unavailable; The second cell indication is used to indicate the serving cell of the terminal when the uplink signal transmission of the candidate cell fails, and / or when the TA of the candidate cell becomes unavailable.

10. The method as described in claim 9, characterized in that, The first cell indication includes at least one of the following: The community configuration identifier of the indicated community; The community group configuration identifier of the indicated community; The community signage of the indicated community; The community group identifier of the indicated community; The second cell indication includes at least one of the following: The community configuration identifier of the indicated community; The community group configuration identifier of the indicated community; The community signage of the indicated community; The community group identifier of the indicated community.

11. The method according to any one of claims 8-10, characterized in that, The method further includes: Receive the uplink signal sent by the terminal; The TA of the candidate cell is calculated based on the uplink signal.

12. A processing method, characterized in that, Performed by a second network device, wherein the second network device is the network device corresponding to the terminal's current serving cell, the method includes: Send first information to the terminal, the first information being used to determine uplink signal configuration information associated with the candidate cell of the terminal; the uplink signal configuration information being used to configure transmission resources, the transmission resources being: the transmission resources used by the terminal when sending a sounding reference signal (SRS) to the first network device corresponding to the candidate cell; The terminal receives failure information sent by the terminal, the failure information being used to indicate that the TA of the candidate cell becomes unavailable, wherein the TA of the candidate cell is determined by the terminal based on second information received from the first network device, the second information being used to determine the timing advance TA of the candidate cell. When the uplink signal configuration information associated with the candidate cell changes, the TA of the candidate cell becomes unavailable, so that the terminal device sends failure information to the second network device and stops sending the probe reference signal SRS to the first network device.

13. The method as described in claim 12, characterized in that, The first information includes at least one of the following: RRC message; Physical control information; MAC control information.

14. A processing method, characterized in that, The method includes: The second network device sends first information to the terminal. The first information is used to determine the uplink signal configuration information associated with the candidate cell. The uplink signal configuration information is used to configure transmission resources. The transmission resources are the transmission resources used by the terminal when sending uplink signals to the first network device corresponding to the candidate cell. The terminal sends a probe reference signal (SRS) to the first network device corresponding to the candidate cell based on the uplink signal configuration information. The first network device sends second information to the terminal; the second information is used to determine the timing advance (TA) of the candidate cell. The terminal receives the second information and determines the TA of the candidate cell based on the second information; when it is determined that the uplink signal configuration information associated with the candidate cell has changed, it determines that the TA of the candidate cell has become unavailable; when it is determined that the TA of the candidate cell has become unavailable, it sends failure information to the second network device and stops sending the probe reference signal SRS to the first network device; the second network device is the network device corresponding to the terminal's current serving cell.

15. A communication device, comprising: The transceiver module is used to receive first information sent by the second network device. The first information is used to determine the uplink signal configuration information associated with the candidate cell. The uplink signal configuration information is used to configure transmission resources. The transmission resources are the transmission resources used by the terminal when sending a sounding reference signal (SRS) to the first network device. Based on the uplink signal configuration information, the probe reference signal (SRS) is sent to the first network device; second information is received from the first network device, the second information being used to determine the timing advance (TA) of the candidate cell; the second network device is the network device corresponding to the terminal's current serving cell, and the first network device is the network device corresponding to the candidate cell; The processing module is configured to determine the TA of the candidate cell based on the second information; and to determine that the TA of the candidate cell becomes unavailable when it is determined that the uplink signal configuration information associated with the candidate cell has changed. When it is determined that the TA of the candidate cell has become unavailable, the transceiver module is further configured to... A failure message is sent to the second network device, and the transmission of the probe reference signal (SRS) to the first network device is stopped.

16. A communication device, comprising: The transceiver module is used to receive the detection reference signal (SRS) sent by the terminal based on the uplink signal configuration information associated with the candidate cell; The uplink signal configuration information is determined based on the first information sent by the second network device received by the terminal. The second network device is the network device corresponding to the terminal's current serving cell. The uplink signal configuration information is used to configure transmission resources, which are the transmission resources used by the terminal when sending a sounding reference signal (SRS) to the first network device. The terminal sends a second piece of information, which is used to determine the timing advance TA of the candidate cell. When the uplink signal configuration information associated with the candidate cell changes, the timing advance TA becomes unavailable so that the terminal device sends a failure message to the second network device and stops sending the probe reference signal SRS to the first network device. The first network device is the network device corresponding to the candidate cell.

17. A communication device, comprising: The transceiver module is used to send first information to the terminal, wherein the first information is used to determine the uplink signal configuration information associated with the candidate cell; The uplink signal configuration information is used to configure transmission resources, which are the transmission resources used by the terminal when sending a sounding reference signal (SRS) to the first network device corresponding to the candidate cell. The terminal receives failure information sent by the terminal, the failure information being used to indicate that the TA of the candidate cell becomes unavailable, wherein the TA of the candidate cell is determined by the terminal based on second information received from the first network device, the second information being used to determine the timing advance TA of the candidate cell, and the TA of the candidate cell becomes unavailable when the uplink signal configuration information associated with the candidate cell changes, so that the terminal device sends failure information to the second network device and stops sending the probe reference signal SRS to the first network device; The second network device is the network device corresponding to the terminal's current serving cell.

18. A communication device, characterized in that, The device includes a processor and a memory, wherein the memory stores a computer program, the processor executes the computer program stored in the memory to cause the device to perform the method as claimed in any one of claims 1 to 7, or the processor executes the computer program stored in the memory to cause the device to perform the method as claimed in any one of claims 8 to 11, or the processor executes the computer program stored in the memory to cause the device to perform the method as claimed in any one of claims 12 to 13.

19. A communication device, characterized in that, include: Processor and interface circuitry, among which The interface circuit is used to receive code instructions and transmit them to the processor; The processor is configured to execute the code instructions to perform the method as claimed in any one of claims 1 to 7, or to execute the code instructions to perform the method as claimed in any one of claims 8 to 11, or to execute the code instructions to perform the method as claimed in any one of claims 12 to 13.

20. A computer-readable storage medium for storing instructions that, when executed, cause the method of any one of claims 1 to 7 to be implemented, or when executed, cause the method of any one of claims 8 to 11 to be implemented, or when executed, cause the method of any one of claims 12 to 13 to be implemented.

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