A communication method, apparatus, device, and storage medium

Abstract

This disclosure relates to a communication method, apparatus, device, and storage medium. It includes: determining at least two timing advances; determining uplink time unit boundaries based on the at least two timing advances; and transmitting uplink data based on the uplink time unit boundaries. By configuring multiple different timing advances for the terminal, the terminal can use an appropriate timing advance to determine the uplink time unit boundaries and transmit uplink data under appropriate circumstances. This can reduce the number of symbols occupied by network devices before and after uplink / downlink handover, thereby increasing the number of available symbols and improving uplink transmission performance.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a communication method, apparatus, device and storage medium. Background Technology

[0002] In related technologies, in dynamic time division duplex (DTDD) scenarios, to improve uplink communication performance, the proportion of uplink (UL) transmission time slots is increased in the TDD configuration. DTDD can be called dynamic TDD, meaning that the proportions of UL and downlink (DL) transmission time slots in the TDD configuration can be dynamically adjusted. If the serving cell and neighboring cells make different dynamic adjustments to their respective TDD structures, it will lead to inconsistencies in their TDD structures, such as inconsistent transmission directions, resulting in severe interference.

[0003] To measure interference between multiple network devices in two adjacent cells, the interference can be measured by having the network devices transmit reference signals. Since the reference signal only occupies a portion of the frequency domain resources, to improve resource utilization efficiency, network devices can simultaneously receive uplink data from terminals in the same serving cell, as well as reference signals from neighboring cell network devices. For the serving cell's network devices, this results in simultaneous reception of both reference signals and uplink data, causing severe inter-symbol interference (ISI). Summary of the Invention

[0004] To overcome the problems existing in related technologies, this disclosure provides a communication method, apparatus, device and storage medium.

[0005] According to a first aspect of the present disclosure, a communication method is provided, the method being executed by a terminal, comprising: determining at least two timing advances; determining an uplink time unit boundary based on the at least two timing advances; and transmitting uplink data based on the uplink time unit boundary.

[0006] In some implementations, at least two timing advances are determined using at least one of the following methods: receiving first configuration information and determining at least two timing advances based on the first configuration information; or determining at least two timing advances based on a first predefined rule.

[0007] In some implementations, at least two timing advances are included, including a first timing advance; the method further includes: determining a first time window, wherein the first time window is a time window for network devices to perform interference measurements, and / or the first time window is a time window for applying the first timing advance; determining uplink time unit boundaries based on at least two timing advances, including: determining uplink time unit boundaries based on the first timing advance within the first time window.

[0008] In some implementations, at least two timing advances are included, including a second timing advance; the method further includes: determining a second time window, wherein the second time window does not overlap with the first time window in the time domain; determining uplink time unit boundaries based on at least two timing advances, including: determining uplink time unit boundaries based on the second timing advance within the second time window.

[0009] In some implementations, the first time window and / or the second time window are determined by at least one of the following methods: receiving second configuration information and determining the first time window and / or the second time window based on the second configuration information; or determining the first time window and / or the second time window based on a second predefined rule.

[0010] In some implementations, the terminal does not expect to transmit uplink channels and / or uplink signals in the first time unit after the first time window, and / or in the last time unit within the first time window.

[0011] In some implementations, the terminal does not expect to receive downlink channels and / or downlink signals in the first time unit after the first time window, and / or in the last time unit within the first time window.

[0012] In some implementations, the lead time is less than or equal to 0.

[0013] In some implementations, the second timing advance is greater than or equal to 0.

[0014] According to a second aspect of the present disclosure, a communication method is provided, the method being performed by a network device, comprising: determining at least two timing advances; determining an uplink time unit boundary based on the at least two timing advances; and receiving uplink data based on the uplink time unit boundary.

[0015] In some implementations, determining at least two time advances includes: determining first configuration information, the first configuration information being used to indicate at least two time advances; sending the first configuration information; and / or, determining at least two time advances based on a first predefined rule.

[0016] In some implementations, at least two timing advances are included, including a first timing advance; the method further includes: determining a first time window, wherein the first time window is a time window for network devices to perform interference measurements, and / or the first time window is a time window for applying the first timing advance; determining uplink time unit boundaries based on at least two timing advances, including: determining uplink time unit boundaries based on the first timing advance within the first time window.

[0017] In some implementations, at least two timing advances are included, including a second timing advance; the method further includes: determining a second time window, wherein the second time window does not overlap with the first time window in the time domain; determining uplink time unit boundaries based on at least two timing advances, including: determining uplink time unit boundaries based on the second timing advance within the second time window.

[0018] In some implementations, the first time window and / or the second time window are determined by: determining second configuration information, the second configuration information being used to indicate the first time window and / or the second time window; sending the second configuration information; and / or,

[0019] Based on the second predefined rule, determine the first time window and / or the second time window.

[0020] In some implementations, uplink channels and / or uplink signals from the terminal are not received in the first time unit after the first time window, and / or in the last time unit within the first time window.

[0021] In some implementations, no downlink channel and / or downlink signal is transmitted to the terminal in the first time unit after the first time window, and / or in the last time unit within the first time window.

[0022] In some implementations, the lead time is less than or equal to 0.

[0023] In some implementations, the second timing advance is greater than or equal to 0.

[0024] According to a third aspect of the present disclosure, a communication apparatus is provided, which may include: a processing module for determining at least two timing advances; the processing module is further configured to determine an uplink time unit boundary based on the at least two timing advances; and a sending module for sending uplink data based on the uplink time unit boundary.

[0025] In some embodiments, the apparatus further includes: a receiving module for receiving first configuration information; a processing module for determining at least two timing advances based on the first configuration information; and a processing module for determining at least two timing advances based on a first predefined rule.

[0026] In some implementations, at least two timing advances are included, including: a first timing advance; the processing module is further configured to: determine a first time window, wherein the first time window is a time window for network devices to perform interference measurements, and / or the first time window is a time window for applying the first timing advance; within the first time window, determine uplink time unit boundaries based on the first timing advance.

[0027] In some implementations, at least two timing advances are included, including a second timing advance; the processing module is further configured to: determine a second time window, wherein the second time window does not overlap with the first time window in the time domain; and within the second time window, determine the uplink time unit boundary based on the second timing advance.

[0028] In some embodiments, the apparatus further includes: a receiving module for receiving second configuration information; a processing module for determining a first time window and / or a second time window based on the second configuration information; and a processing module for determining the first time window and / or the second time window based on a second predefined rule.

[0029] In some implementations, the terminal does not expect to transmit uplink channels and / or uplink signals in the first time unit after the first time window, and / or in the last time unit within the first time window.

[0030] In some implementations, the terminal does not expect to receive downlink channels and / or downlink signals in the first time unit after the first time window, and / or in the last time unit within the first time window.

[0031] In some implementations, the lead time is less than or equal to 0.

[0032] In some implementations, the second timing advance is greater than or equal to 0.

[0033] According to a fourth aspect of the present disclosure, a communication apparatus is provided, the apparatus comprising: a processing module configured to determine at least two timing advances; the processing module further configured to determine an uplink time unit boundary based on the at least two timing advances; and a receiving module configured to receive uplink data based on the uplink time unit boundary.

[0034] In some embodiments, the apparatus further includes: a processing module further configured to determine first configuration information, the first configuration information being used to indicate at least two timing advances; a sending module further configured to send the first configuration information; and / or, the processing module further configured to determine at least two timing advances based on a first predefined rule.

[0035] In some implementations, at least two timing advances are included, including: a first timing advance; the processing module is further configured to: determine a first time window, wherein the first time window is a time window for network devices to perform interference measurements, and / or the first time window is a time window for applying the first timing advance; within the first time window, determine uplink time unit boundaries based on the first timing advance.

[0036] In some implementations, at least two timing advances are included, including a second timing advance; the processing module is further configured to: determine a second time window, wherein the second time window does not overlap with the first time window in the time domain; and within the second time window, determine the uplink time unit boundary based on the second timing advance.

[0037] In some embodiments, the apparatus further includes: a processing module further configured to determine second configuration information, the second configuration information being used to indicate a first time window and / or a second time window; a sending module configured to send the second configuration information; and / or, the processing module further configured to determine the first time window and / or the second time window based on a second predefined rule.

[0038] In some implementations, uplink channels and / or uplink signals from the terminal are not received in the first time unit after the first time window, and / or in the last time unit within the first time window.

[0039] In some implementations, no downlink channel and / or downlink signal is transmitted to the terminal in the first time unit after the first time window, and / or in the last time unit within the first time window.

[0040] In some implementations, the lead time is less than or equal to 0.

[0041] In some implementations, the second timing advance is greater than or equal to 0.

[0042] According to a fifth aspect of the present disclosure, a communication device is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: perform the first aspect and any one of the methods in the first aspect.

[0043] According to a sixth aspect of the present disclosure, a communication device is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: perform the second aspect and any one of the methods in the second aspect.

[0044] According to a seventh aspect of the present disclosure, a non-transitory computer-readable storage medium is provided, which, when instructions in the storage medium are executed by a processor of a terminal, enables the terminal to perform the first aspect and any one of the methods in the first aspect.

[0045] According to an eighth aspect of the present disclosure, a non-transitory computer-readable storage medium is provided, which, when instructions in the storage medium are executed by a processor of a network device, enables the network device to perform the second aspect and any one of the methods in the second aspect.

[0046] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: by configuring multiple different timing advances for the terminal, the terminal can use an appropriate timing advance to determine the uplink time unit boundary and send uplink data under corresponding circumstances. This can reduce the number of symbols occupied by network devices before and after uplink / downlink handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0047] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0048] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0049] Figure 1 This is a schematic diagram of a wireless communication system according to an exemplary embodiment.

[0050] Figure 2 This is a schematic diagram illustrating an interference scenario according to an exemplary embodiment.

[0051] Figure 3 This is a schematic diagram of ISI interference according to an exemplary embodiment.

[0052] Figure 4 This is a schematic diagram of a transmission symbol timing according to an exemplary embodiment.

[0053] Figure 5 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0054] Figure 6 This is a schematic diagram of an uplink symbol employing a first time advance, according to an exemplary embodiment.

[0055] Figure 7 This is a schematic diagram of an uplink symbol employing a second timing advance, according to an exemplary embodiment.

[0056] Figure 8 This is a flowchart illustrating another communication method according to an exemplary embodiment.

[0057] Figure 9 This is a flowchart illustrating yet another communication method according to an exemplary embodiment.

[0058] Figure 10 This is a flowchart illustrating another communication method according to an exemplary embodiment.

[0059] Figure 11 This is a flowchart illustrating another communication method according to an exemplary embodiment.

[0060] Figure 12 This is a flowchart illustrating yet another communication method according to an exemplary embodiment.

[0061] Figure 13 This is another transmission symbol timing diagram illustrated according to an exemplary embodiment.

[0062] Figure 14 This is another transmission symbol timing diagram illustrated according to an exemplary embodiment.

[0063] Figure 15 This is a schematic diagram of a communication device according to an exemplary embodiment.

[0064] Figure 16 This is a schematic diagram of another communication device according to an exemplary embodiment.

[0065] Figure 17 This is a schematic diagram of a communication device according to an exemplary embodiment.

[0066] Figure 18 This is a schematic diagram of another communication device according to an exemplary embodiment. Detailed Implementation

[0067] 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 numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure.

[0068] The communication methods disclosed herein can be applied to Figure 1 The wireless communication system 100 shown may include network device 110 and terminal 120. It is understood that... Figure 1 The wireless communication system shown is for illustrative purposes only. A wireless communication system may also include other network devices, such as core network equipment, wireless relay equipment, and wireless backhaul equipment. Figure 1 Not shown in the diagram. This disclosure does not limit the number of network devices and terminals included in the wireless communication system.

[0069] It is further understood that the wireless communication system of this disclosure is a network providing wireless communication functionality. The wireless communication system can employ different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier-frequency division multiple access (SC-FDMA), and carrier sense multiple access with collision avoidance. Based on factors such as capacity, speed, and latency, networks can be categorized as 2G networks, 3G networks, 4G networks, or future evolution networks, such as the 5th generation wireless communication system (5G) network, which can also be referred to as New Radio (NR). For ease of description, this disclosure may sometimes simply refer to the wireless communication network as a network.

[0070] Furthermore, the network device 110 involved in this disclosure can also be referred to as a wireless access network device. This wireless access network device can be: a base station, an evolved Node B (eNB), a home base station, an access point (AP) in a wireless fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP), or a TRP, etc. It can also be a gNB in ​​an NR system, or it can be a component or part of a base station. When it is a vehicle-to-everything (V2X) communication system, the network device can also be an in-vehicle device. It should be understood that the specific technologies and specific device forms used in the embodiments of this disclosure are not limited.

[0071] Furthermore, the terminal 120 involved in this disclosure can also be referred to as a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., which is a device that provides voice and / or data connectivity to a user. For example, the terminal can be a handheld device with wireless connectivity, an in-vehicle device, etc. Currently, some examples of terminals include: smartphones, pocket personal computers (PPCs), handheld computers, personal digital assistants (PDAs), laptops, tablets, wearable devices, or in-vehicle devices, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be an in-vehicle device. It should be understood that the embodiments of this disclosure do not limit the specific technology or specific device form adopted by the terminal.

[0072] In this embodiment, network device 110 and terminal 120 can employ any feasible wireless communication technology to transmit data to each other. The transmission channel corresponding to network device 110 sending data to terminal 120 is called the downlink channel (DL), and the transmission channel corresponding to terminal 120 sending data to network device 110 is called the UL. It is understood that the network device involved in this embodiment can be a base station. Of course, the network device can also be any other possible network device, and the terminal can be any possible terminal; this disclosure does not impose any limitations.

[0073] In the DTDD scenario of release (Rel) 18, to improve uplink communication performance, the proportion of UL transmission slots in the TDD configuration is increased. DTDD can be called dynamic TDD, meaning that the proportions of UL and downlink (DL) transmission slots in the TDD configuration can be dynamically adjusted. Suppose the serving cell and neighboring cells have made different dynamic adjustments to their respective TDD structures. This will lead to inconsistencies in the TDD structures of their respective cells, such as inconsistent transmission directions, resulting in severe interference.

[0074] For example Figure 2 The scenario shown illustrates that the serving cell can include terminal 1 and network device 1. Neighboring cells can include terminal 2 and network device 2. When the TDD structures of the serving cell and neighboring cells are inconsistent, in a certain time slot, the serving cell and neighboring cell may perform uplink and downlink transmissions separately. For example… Figure 2As shown, network device 1 sends downlink data to terminal 1, and terminal 2 sends uplink data to network device 2. Figure 2 The two solid black arrows shown represent different transmission states in different cells at the same time. In this case, since terminal 2 is in the uplink transmission slot, the data sent by terminal 2 will also be transmitted to terminal 1. For terminal 1, it may simultaneously receive downlink data sent by network device 1 and data sent by terminal 2, thus generating ISI (Intermittent Search Indicator). Figure 2 The dashed arrow pointing from terminal 2 to terminal 1 indicates the interference caused by the data sent by terminal 2 to terminal 1.

[0075] To measure interference between network devices in adjacent cells and between network devices, the Rel-18 radio access network (RAN)1 supports the transmission of CLI reference signals between different network devices to measure the corresponding interference. For example, in some schemes, for cross-link interference (CLI) and / or channel measurements between network devices on the same channel, RAN1 at least supports periodic non-zero power channel state information-reference signal (NZP CSI-RS) or synchronization signal / physical broadcast channel block (SSB) for CLI and / or channel measurements between network devices. The SSB can be a cell-defining (CD) SSB or a non-cell-defining (NCD) SSB.

[0076] One scenario involves an aggressor network device transmitting a corresponding reference signal (RS), such as a CLI RS, based on scheduling. The serving network device receives this reference signal. The serving network device can also be called the victim network device. The victim network device is a network device within the serving cell, while the aggressor network device is a network device in a neighboring cell. The victim network device receives the CLI RS transmitted by the aggressor network device to perform CLI measurements. Considering that the CLI RS only occupies a portion of the frequency domain resources, to improve resource utilization efficiency, the victim network device can simultaneously receive uplink data transmitted from terminals within its serving cell. For example... Figure 3As shown, the time interval between CLI RS and UL data arrivals is N. TA，offset T c +T delay Among them, N TA，offset Cell-level Timing Advance (TA) information configured for victim network devices, T c T is the fundamental quantity of time. delay This refers to the propagation delay of CLI RS between the victim network device and the aggressor network device. This is understandable. Figure 3 T in TA，offset That is, equal to N TA，offset T c .

[0077] In a TDD scenario with a frequency range (FR) of 1, N TA，offset T c The default value can be 13 microseconds (μs) or 20 μs, depending on whether it is in a dynamic spectrum sharing (DSS) band. In this scenario, when the time difference N... TA，offset T c +T delay If the duration of the cyclic prefix (CP) is exceeded, and the victim network device simultaneously receives CLI RS and UL data, it will cause severe ISI interference.

[0078] It is evident that when simultaneously receiving CLI RS and UL data, some CLI RS data is received outside the duration of the CP (Concurrent Processing) period, causing severe ISI (Independent Sounding Intrusion) interference to the CLI RS and UL data received within the CP period. Therefore, how to avoid this interference has become a problem that needs to be solved.

[0079] In some schemes, zero-N is proposed to reduce ISI interference. TA，offset The solution involves configuring the cell-level TA information of the serving cell to 0, i.e., N. TA，offset Configured to 0. This ensures that UL data and CLI RS for the serving cell can arrive during the CP duration.

[0080] However, N TA，offset It is primarily defined based on the uplink / downlink switching time of network devices. If N TA，offsetIf the configuration is set to 0, no time is reserved for network devices to perform uplink / downlink switching. The network devices will then occupy one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols before and after the uplink / downlink switching. On the corresponding occupied OFDM symbols, the base station will be unable to receive and process data transmitted by terminals within the serving cell, thus degrading the cell's communication performance.

[0081] like Figure 4 As shown, assuming the time when the neighboring cell network device sends downlink data is used as the reference, and assuming the neighboring cell network device sends a reference signal, the time it takes for the serving cell network device to receive the reference signal is T. delay Using zeroN TA，offset In the given scenario, assuming the serving cell network device uses the last uplink symbol before the uplink / downlink transition during the transition, the network device will be unable to receive data sent by the terminal on that uplink symbol. In other words, the network device cannot perform normal communication on that uplink symbol; it is unavailable to the network device. As... Figure 4 The shaded area in the second row represents uplink / downlink switching, while the gray uplink symbol indicates that part of the uplink symbol is occupied for network devices to perform uplink / downlink switching. From the terminal's perspective, considering that the same uplink symbol is unavailable to the network device, the terminal generally does not need to send data. It can be understood that even if the terminal sends data on the uplink symbol occupied by the network device for uplink / downlink switching, the network device cannot receive such data. Therefore, the terminal typically does not send data on uplink symbols that are unavailable to the network device.

[0082] From another perspective, the terminal also needs to perform uplink and downlink switching. Therefore, for the terminal, when the terminal in the serving cell adopts zeroN... TA，offset The proposed scheme states that if a terminal uses uplink or downlink symbols for uplink / downlink switching, the terminal will not transmit data on the used uplink or downlink symbols, meaning that the used uplink or downlink symbols are considered unavailable to the terminal.

[0083] Figure 4 The last line in the text shows that the terminal in the serving cell uses non-zero N. TA，offset The proposed scheme ensures that uplink / downlink switching will not occupy other uplink or downlink symbols, thus not affecting the terminal's ability to transmit data on different uplink or downlink symbols.

[0084] Obviously, simply introducing zeroN TA，offsetThis scheme results in a large number of symbols being occupied for uplink / downlink or downlink / uplink switching by network devices, making it impossible for these occupied symbols to communicate normally and reducing the communication performance of the cell.

[0085] Therefore, this disclosure provides a communication method, apparatus, device, and storage medium. By configuring multiple different timing advances for the terminal, the terminal can determine the uplink time unit boundary using an appropriate timing advance under different circumstances and transmit uplink data. This can reduce the number of symbols occupied by network devices before and after uplink / downlink handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0086] Figure 5 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 5 As shown, the method can be executed by a terminal, and the method may include the following steps:

[0087] In step S11, at least two time advances are determined.

[0088] In some embodiments, the terminal may determine at least two timing advances. For example, different timing advances may be applicable to different conditions associated with interference measurements performed by network devices, or different timing advances may be applicable to pre-configured specified scenarios, which is not limited in this disclosure.

[0089] For example, the terminal can determine at least two cell-level TA (Transmission Acquisition) information. For instance, it could be two N (Network Addresses). TA，offset Among them, different N TA，offset The applicable conditions differ. For example, different conditions may be related to interference measurements of network devices. Then an N TA，offset It can be correlated with interference measurements of network devices, another N TA，offset This may be related to the fact that network devices do not perform interference measurements.

[0090] For example, a terminal can directly configure at least two N's using configuration information sent by a network device. TA，offset Among them, at least two N's are configured in the configuration information. TA，offset This can be used on the terminal in different scenarios. Assume at least two N's... TA，offset Including the first N TA，offset Second N TA，offset Among them, the first N TA，offset This can be applied to the first scenario. The terminal can transmit the first N... TA，offset N is used within the time domain corresponding to the first scenario. TA，offset So that the terminal can, within the time domain corresponding to the first scenario, perform operations based on the first N. TA，offsetDetermine the uplink time unit boundary for transmitting uplink data. Alternatively, the terminal receives configuration information that configures the first N. TA，offset And configured the first N TA，offset This corresponds to the first scenario and configures the corresponding time domain range for the first scenario. In other words, the configuration information indicates the first N corresponding to the first scenario. TA，offset And the time domain range in which the first scenario takes effect. The terminal can determine the first N to be used in the first scenario based on the configuration information. TA，offset So that the terminal, within the time domain corresponding to the first scenario, uses the first N... TA，offset Determine the uplink time unit boundaries for transmitting uplink data. Similarly, the second N... TA，offset This can be applied to the second scenario. The terminal can transmit the second N... TA，offset N is used within the time domain corresponding to the second scenario. TA，offset So that the terminal can, within the time domain corresponding to the second scenario, perform operations based on the second N. TA，offset Determine the uplink time unit boundary for transmitting uplink data. Alternatively, the terminal receives configuration information that configures the second N. TA，offset And configured the second N TA，offset This corresponds to the second scenario, and the corresponding time domain range for the second scenario is configured. In other words, the configuration information indicates the second N corresponding to the second scenario. TA，offset And the time domain range in which the second scenario takes effect. The terminal can determine the second N to be used in the second scenario based on the configuration information. TA，offset So that the terminal, within the time domain corresponding to the second scenario, can use the second N. TA，offset Determine the uplink time unit boundary for sending uplink data.

[0091] For example, a terminal can be configured with at least two Ns according to predefined rules. TA，offset Among them, at least two Ns can be predefined in the predefined rules. TA，offset For example, based on different usage scenarios, corresponding N can be predefined. TA，offset For example, predefine N corresponding to each scenario in at least two application scenarios. TA，offset Assume at least two N's TA，offset Including the first N TA，offset Second N TA，offset The first N TA，offset It can be applied to the first scenario, and the second N. TA，offset This can be applied to the second scenario. Based on predefined rules, the terminal can determine the first N to use in the first scenario. TA，offset And / or determine the second N used in the second scenario TA，offset So that the terminal can, within the time domain corresponding to the first scenario, based on the first N... TA，offsetDetermine the uplink time unit boundaries for transmitting uplink data. And / or, within the time domain corresponding to the second scenario, based on the second N TA，offset Determine the uplink time unit boundary for sending uplink data. It's clear that the first scenario and the second scenario are different application scenarios.

[0092] In some cases, one of the first and second scenarios mentioned above can be a scenario where the network device performs interference measurement, and the other scenario can be a scenario where the network device does not perform interference measurement. The time domain range for interference measurement by the network device can be determined by signaling indication or predefined rules. The specific determination method is similar to that of time windows, and can be referred to the description of the corresponding embodiments in the following sections; this disclosure will not repeat it further.

[0093] In step S12, the uplink time unit boundary is determined based on at least two time advances.

[0094] In some embodiments, the terminal may determine the uplink time unit boundary based on at least two time advance amounts determined in S11.

[0095] For example, the terminal can use at least two N values ​​determined in S11, based on its current time domain range. TA，offset One of the factors determining the uplink time unit boundary. In some cases, the current time domain range of the terminal can be related to whether the network device is performing interference measurements. Different time domain ranges can correspond to different scenarios.

[0096] For example, in S11, the terminal determines different N based on configuration information or predefined rules. TA，offset and each N TA，offset The corresponding scenario. Then the terminal can select the N corresponding to that scenario. TA，offset Determine the boundaries of the uplink time unit.

[0097] It can be understood that the uplink time unit boundary represents the time boundary for sending uplink data, such as the start time boundary for the terminal to send uplink data. The uplink time unit boundary can be the boundary of an uplink OFDM symbol or the boundary of an uplink OFDM slot.

[0098] In this disclosure, "boundary" can generally be understood as the starting position, such as the starting position of an OFDM symbol or the starting position of an OFDM slot. Specifically, the uplink time unit boundary can be considered the starting position of an uplink OFDM symbol or uplink OFDM slot. For example, the starting position of an uplink OFDM symbol or uplink OFDM slot can be determined using frame timing.

[0099] In step S13, uplink data is sent based on the uplink time unit boundary.

[0100] In some embodiments, the terminal may send uplink data based on the uplink time unit boundary determined in S12.

[0101] It is clear that the terminal can determine at least two N values ​​in S12 based on S11. TA，offset Determine the uplink time unit boundary. Then, send uplink data based on this uplink time unit boundary. Multiple N values ​​can be configured. TA，offset This allows the terminal to use appropriate N in different scenarios. TA，offset This involves determining the uplink time unit boundaries in the corresponding scenario. Compared to some solutions that consistently use zeroN... TA，offset In situations where this disclosure can reduce the number of unusable symbols in a cell, and where the scenario involves interference measurements by network equipment, the terminal can also employ appropriate N... TA，offset Determine the uplink time unit boundary to avoid ISI interference with the reference signal sent by network devices.

[0102] In some embodiments, to enable the serving cell network device to receive uplink signals from the serving cell terminal and reference signals from neighboring cell network devices during the CP duration, the first N TA，offset It can be less than or equal to 0. For example... Figure 6 As shown, the terminal is based on the first N TA，offset Determine the uplink time unit boundaries for transmitting uplink data, and transmit uplink data based on these boundaries. In N TA，offset When T = 0, the time it takes for uplink data to arrive at the network device is equal to the time interval between the arrival of the reference signal sent by the neighboring cell network device and T. delay Among them, T delay This refers to the transmission time of the reference signal from the neighboring cell network device to the serving cell network device. It assumes that the distance between the serving cell network device and the neighboring cell network device is relatively short (e.g., 500m). In most scenarios, T... delay The duration is less than the CP duration in the corresponding OFDM symbol. Based on this, it can be ensured that network devices receive uplink data sent by terminals in the same serving cell and reference signals sent by neighboring cell network devices within the CP range, thereby effectively reducing ISI interference between signals and improving data transmission efficiency and interference measurement accuracy. It can be understood that the reference signal sent by the neighboring cell can be a reference signal used for interference measurement, such as a CLI RS.

[0103] In some embodiments, to ensure the uplink / downlink switching time of network devices and / or terminals, the second N TA，offset It can be greater than 0. For example... Figure 7 As shown, the terminal is based on the second N TA，offset Determine the boundaries of the uplink time unit for transmitting uplink data. It can be seen that there is a certain time delay between the uplink time unit and the downlink time unit for the terminal to transmit uplink data. Figure 7 The diagonally filled area is shown in the diagram. This delay can be based on the second N. TA，offset Determined. In some examples, assume the second N TA，offset If the scenario in question involves network devices that do not perform interference measurements, then it is unnecessary to consider whether the network device can receive uplink data sent by the serving cell terminal and reference signals sent by neighboring cell network devices during the CP duration. In this case, the serving cell network device bases its decisions on the second N... TA，offset By defining the uplink time unit boundary for receiving uplink data, the uplink time unit is advanced by a certain amount of time compared to the downlink time unit. When network devices perform uplink / downlink handover, they can utilize this time period for the handover, thus avoiding the need to occupy a symbol before or after the handover. This minimizes the number of symbols occupied during uplink / downlink handover and improves uplink transmission performance.

[0104] This disclosure allows the terminal to configure multiple different timing advances, enabling it to determine uplink time unit boundaries and transmit uplink data using appropriate timing advances under different circumstances. This reduces the number of symbols required for uplink / downlink handover by network devices, thereby increasing the number of available symbols and improving uplink transmission performance.

[0105] In the communication method provided in this disclosure embodiment, at least two timing advances can be determined in at least one of the following ways: receiving first configuration information and determining at least two timing advances based on the first configuration information; or determining at least two timing advances based on a first predefined rule.

[0106] In some embodiments, the terminal may receive first configuration information. Based on the received first configuration information, the terminal may determine at least two timing advances.

[0107] For example, the terminal receives first configuration information sent by the network device. This first configuration information indicates at least two timing advances. The terminal can determine at least two timing advances based on the received first configuration information.

[0108] For example, the first configuration information may be carried in radio resource control (RRC) signaling, medium access control control element (MAC CE) signaling, and / or downlink control information (DCI).

[0109] For example, the first configuration information is carried on RRC signaling, with at least two Ns. TA，offset For two N TA，offset For example, two Ns. TA，offset It can include the first N TA，offset Second N TA，offset .

[0110] For the first N TA，offset The terminal can receive a first RRC signaling, which can be used to indicate a first N. TA，offset In some cases, the terminal can use the first N within the time domain corresponding to the first scenario. TA，offset Determine the uplink time unit boundaries to transmit uplink data. In another scenario, the terminal may receive a first RRC signaling message, which indicates a first N... TA，offset And indicated the first N TA，offset This corresponds to the first scenario and configures the corresponding time domain range for the first scenario. For example, the first RRC signaling indicates the first N corresponding to the first scenario. TA，offset And the time domain range in which the first scenario takes effect. The terminal can determine the first N corresponding to the first scenario based on the first RRC signaling. TA，offset And within the time domain corresponding to the first scenario, the first N is used. TA，offset Determine the uplink time unit boundaries to send uplink data.

[0111] Similarly, for the second N TA，offset The terminal can receive a second RRC signaling, which can be used to indicate a second N. TA，offset In some cases, the terminal can use the second N within the time domain corresponding to the second scenario. TA，offset Determine the uplink time unit boundaries to transmit uplink data. In another scenario, the terminal may receive a second RRC signaling, which instructs a second N... TA，offset And indicated the second N TA，offset This corresponds to the second scenario, and the corresponding time domain range for the second scenario is configured. For example, the second RRC signaling indicates the second N corresponding to the second scenario. TA，offsetAnd the time domain range in which the second scenario takes effect. The terminal can determine the second N corresponding to the second scenario based on the second RRC signaling. TA，offset And within the time domain corresponding to the second scenario, the second N is used. TA，offset Determine the uplink time unit boundaries to send uplink data.

[0112] In some embodiments, the second RRC signaling described above may be n-TimingAdvanceOffset signaling.

[0113] In some embodiments, the first RRC signaling and the second RRC signaling mentioned above may be the same RRC signaling. For example, the first RRC signaling and the second RRC may be the same newly defined RRC signaling, or an existing RRC signaling may be reused.

[0114] In some embodiments, the first RRC signaling and the second RRC signaling are different RRC signaling. For example, the first RRC signaling may be the same newly defined RRC signaling, or it may be a reused existing RRC signaling. The second RRC signaling may be n-TimingAdvanceOffset signaling.

[0115] In some embodiments, one of the first and second scenarios can be a scenario where the network device performs interference measurement, and the other scenario can be a scenario where the network device does not perform interference measurement. In this case, it is assumed that the first configuration information indicates two N... TA，offset This can include: N corresponding to the network device performing interference measurement. TA，offset And N corresponding to network devices not performing interference measurements. TA，offset The terminal can determine the N corresponding to the network device when performing interference measurement based on the received first configuration information. TA，offset And N corresponding to network devices not performing interference measurements. TA，offset .

[0116] It is worth noting that the time domain range for interference measurement by the network device in this disclosed solution can be determined by configuration information or predefined rules. For example, the terminal can determine the time domain range for interference measurement by the network device based on rate matching resource (RMR) signaling, and apply the corresponding N within the corresponding time domain range. TA，offset .

[0117] In some embodiments, the terminal may determine at least two timing advances based on a first predefined rule.

[0118] For example, multiple N can be predefined. TA，offsetFor example, N corresponding to the first scene is predefined. TA，offset And N corresponding to the second scenario is predefined. TA，offset The terminal determines N corresponding to the predefined first scenario based on the first predefined rule. TA，offset and N corresponding to the predefined second scenario TA，offset It can be assumed that the first predefined rule can predefine N for different use cases. TA，offset This allows the terminal to determine N corresponding to different scenarios based on the first predefined rule. TA，offset And within the time domain corresponding to the relevant scenario, use the N corresponding to that scenario. TA，offset Determine the boundaries of the uplink time unit.

[0119] For example, with at least two Ns TA，offset For two N TA，offset For example, two Ns. TA，offset It can include the first N TA，offset Second N TA，offset .

[0120] For the first N TA，offset The first N can be predefined. TA，offset That is, the first predefined rule predefines the first N. TA，offset The first predefined rule can predefine the first N. TA，offset and the first N TA，offset This corresponds to the first scenario. Based on the first predefined rule, the terminal can determine the first N corresponding to the first scenario. TA，offset So that the terminal can, within the time domain corresponding to the first scenario, perform operations based on the first N. TA，offset Determine the boundaries of the uplink time unit.

[0121] For the second N TA，offset The second N can be predefined. TA，offset That is, the first predefined rule predefines the second N. TA，offset The first predefined rule can predefine the second N. TA，offset and the second N TA，offset Corresponding to the second scenario. The terminal can determine the second N corresponding to the second scenario based on the first predefined rule. TA，offset So that the terminal can, within the time domain corresponding to the second scenario, perform operations based on the second N. TA，offset Determine the boundaries of the uplink time unit.

[0122] In some embodiments, one of the first and second scenarios can be a scenario where the network device performs interference measurement, and the other scenario can be a scenario where the network device does not perform interference measurement. The time domain range for interference measurement by the network device can be determined by signaling indication or predefined rules. The specific determination method is similar to that of time windows, and can be referred to the description of subsequent corresponding embodiments, which will not be repeated here. In this case, it is assumed that the first predefined rule defines two N... TA，offset This can include: N corresponding to the network device performing interference measurement. TA，offset And N corresponding to network devices not performing interference measurements. TA，offset The terminal can determine the corresponding N when the network device performs interference measurement based on the first predefined rule. TA，offset And N corresponding to network devices not performing interference measurements. TA，offset .

[0123] In some embodiments, the terminal may determine at least two timing advances based on first configuration information and first predefined rules.

[0124] For example, the terminal can first determine whether it has received the first configuration information. If the terminal has received the first configuration information, it can determine at least two timing advances based on the first configuration information. If the terminal has not received the first configuration information within a first preset time, it can determine at least two timing advances based on a first predefined rule. Alternatively, if the first configuration information received by the terminal only indicates one or more of the at least two timing advances, that is, the first configuration information does not indicate all of the at least two timing advances, the terminal can determine the timing advances not indicated in the first configuration information based on the first predefined rule.

[0125] For example, with at least two Ns TA，offset For two N TA，offset For example, two Ns. TA，offset It can include the first N TA，offset Second N TA，offset .

[0126] In some cases, if the terminal receives the first configuration information within a first preset time, the terminal can determine the first N based on the first configuration information. TA，offset Second N TA，offset For example, upon receiving a first RRC signaling message and a second RRC signaling message, the first RRC signaling message is used to indicate the first N. TA，offset And the second RRC signaling is used to indicate the second N TA，offsetThe first RRC signaling and the second RRC signaling can be the same RRC signaling or different RRC signaling. In other cases, if the terminal does not receive the first configuration information within a first preset time, the terminal can determine the first N based on the first preset rule. TA，offset Second N TA，offset For example, the first preset rule predefines the first N corresponding to the first scenario. TA，offset The second N corresponding to the second scenario TA，offset The terminal can determine the corresponding N for the specific scenario based on the first preset rule. TA，offset .

[0127] In other cases, the first configuration information may only indicate the first N. TA，offset Second N TA，offset One of N in TA，offset For example, the first N TA，offset Second N TA，offset In cases where different RRC signaling messages indicate different points, the terminal may receive only one RRC signaling message. For example, if the terminal receives only the first or the second RRC signaling message, the terminal can determine the N indicated by that RRC signaling message based on the received RRC signaling message. TA，offset In this case, the terminal can further determine another unindicated N based on the first predefined rule. TA，offset Assume the terminal receives the first RRC signaling and determines the first N corresponding to the first scenario based on the first RRC signaling. TA，offset Meanwhile, the first predefined rule predefines the second N corresponding to the second scenario. TA，offset Then the terminal can determine the second N corresponding to the second scenario based on the first predefined rule. TA，offset .

[0128] For example, it can be assumed that the terminal receives the n-TimingAdvanceOffset signaling within a first preset time period, and determines the second N corresponding to the second scenario based on the n-TimingAdvanceOffset signaling. TA，offset We can assume the second scenario is one where network devices do not perform interference measurements. When the first predefined rule predefines the first N corresponding to the first scenario... TA，offset Then the terminal can also determine the first N corresponding to the first scenario based on the first predefined rule. TA，offset The first scenario could be a scenario where network devices are performing interference measurements.

[0129] Of course, in the above embodiments, the terminal determines at least two N based on the first configuration information. TA，offsetThis can be executed when the terminal receives the first configuration information, or at some point after the terminal receives the first configuration information. This disclosure does not impose any limitations. Furthermore, in the above embodiments, the terminal determines at least two N values ​​based on a first predefined rule. TA，offset It can be executed when the terminal is in the corresponding scenario, or the terminal can predetermine at least two Ns at a certain point in time based on a first predefined rule. TA，offset So that when the terminal is in the corresponding scenario, it can be determined according to the N. TA，offset This disclosure does not limit the determination of the uplink time unit boundary.

[0130] It is understandable that the aforementioned first preset time can be the time period during which the terminal determines whether it has received the first configuration information. For example, a first preset time can be preset for the terminal to determine whether it has received the first configuration information within that time period, or to determine at least two N values ​​based on the first configuration information. TA，offset All of the above. For example, the start time and duration of the first preset time can be predefined, or the start and end times of the first preset time can be predefined. If the terminal does not receive the first configuration information within the time domain corresponding to the first preset time, or has not determined at least two N values ​​based on the first configuration information... TA，offset If all of the given information are found, the terminal can further determine the remaining undetermined N using the first predefined rule. TA，offset .

[0131] In some embodiments, the first preset time may be defined based on OFDM symbols, OFDM slots, frames or subframes, and this disclosure does not limit it.

[0132] It should be understood that the aforementioned first preset time can be set arbitrarily according to the actual situation, and this disclosure does not impose any restrictions.

[0133] In some embodiments, the first configuration information may be any one or more combinations of RRC signaling, MAC CE signaling and / or DCI, without limitation in this disclosure.

[0134] It is understood that in this embodiment, the terminal can jointly determine at least two time advances based on the first configuration information and the first predefined rules.

[0135] This disclosure provides multiple methods for determining at least two timing advances, enabling terminals to use appropriate timing advances to determine uplink time unit boundaries and transmit uplink data under suitable circumstances. This can reduce the number of symbols required for uplink / downlink handover by network devices before and after the handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0136] In the communication method provided in this embodiment, at least two timing advances include a first timing advance. Figure 8 This is a flowchart illustrating another communication method according to an exemplary embodiment. For example... Figure 8 As shown, the method may also include the following steps:

[0137] In step S21, a first time window is determined.

[0138] In some embodiments, at least two time advances may include a first time advance.

[0139] In some embodiments, the terminal may further determine a first time window. This first time window may be a time window for the network device to perform interference measurements. And / or, the first time window may be a time window for applying a first time lead.

[0140] For example, the terminal receives configuration information sent by the network device, which may indicate a first time window. The terminal determines the first time window based on this configuration information.

[0141] It is understood that the configuration information can directly indicate the time window for the network device to perform interference measurements. The terminal can use the time window for interference measurement as the first time window, and the terminal can execute subsequent steps S22 within this time window. The configuration information can also directly indicate the time window for applying the first time advance, and the terminal executes step S22 within this time window. However, it should be understood that the time window for applying the first time advance can be the time window for the network device to perform interference measurements, or it can be a different time window; this disclosure does not limit this.

[0142] For example, the configuration information received by the terminal may include one or more parameters such as the configuration period of the first time window, the measurement time slot offset or measurement symbol offset, and the number of duration time slots or symbols of the first time window. Based on the configuration period, measurement time slot offset or measurement symbol offset, and the number of duration time slots or symbols in the configuration information, the terminal can determine the first time window. Of course, the first time window can be a time window in which the network device performs interference measurements, or a time window in which a first time lead is applied; this disclosure does not limit this. Specifically, the time window in which the first time lead is applied can be a time window in which the network device performs interference measurements, or a time window in which the network device does not perform interference measurements.

[0143] In some cases, configuration information may include parameters based on OFDM symbols, slots, frames, or subframes, such as one or more of the following parameters: OFDM symbol offset, slot offset, frame offset, subframe offset, number of continuous OFDM symbols in the first time window, number of continuous slots in the first time window, number of continuous frames in the first time window, and number of continuous subframes in the first time window.

[0144] For example, the terminal determines the first time window based on a second predefined rule. This second predefined rule can predefine time windows for network devices to perform interference measurements, or time windows for applying a first time advance. For instance, the second predefined rule predefines which time domains are designated as time windows for network devices to perform interference measurements, or which time domains are designated as first time windows for applying the first time advance. The terminal can then determine the first time window based on this second predefined rule.

[0145] For example, the second predefined rule can predefine N duration time units and their offsets. A time unit can be an OFDM symbol, OFDM slot, frame, or subframe. Assuming a first time window consists of 10 OFDM slots, the second predefined rule can predefine a start slot and duration, or a start slot and an end slot. For instance, with a start slot of 0, slots 0 to 9 within the same frame form one time window, slots 10 to 19 form another, and so on. Similarly, assuming a time unit offset of 2, within the same frame, slots 2 to 11 form one time window, slots 12 to 21 form another, and so on.

[0146] In some embodiments, it is assumed that the first time window and the first N TA，offset Related. Therefore, in the first predefined rule for the predefined time offset, a first N can also be predefined. TA，offset The associated window index. This further indicates the first N. TA，offset The correlation with the first time window.

[0147] Assuming the first time window can be the time window during which the network device performs interference measurements, the terminal uses a first time advance to determine the uplink time unit boundary within the first time window. This first time advance can be considered the time advance used by the terminal when the network device performs interference measurements. In some cases, the first time advance can be set to less than or equal to 0, for example... Figure 6 As shown, this allows the serving cell network device to receive uplink data sent by terminals in the same cell, as well as reference signals sent by neighboring cell network devices for interference measurement, during the CP duration, thereby avoiding ISI interference between uplink data sent by terminals in the same cell and reference signals sent by neighboring cell network devices.

[0148] S12, which determines the uplink time unit boundary based on at least two time advances, may also include the following steps:

[0149] In step S22, within the first time window, the uplink time unit boundary is determined based on the first time advance.

[0150] In some embodiments, the terminal may determine the uplink time unit boundary based on a first time advance within the first time window determined in S21.

[0151] In other words, the terminal can determine the uplink time unit boundary based on the first time advance within the time window during which the network device performs interference measurement. And / or, the terminal can determine the uplink time unit boundary based on the first time advance within the time window during which the first time advance is applied.

[0152] For example, a terminal can determine the time window for network device interference measurement and can pre-set the time window corresponding to a first time advance. Then, within the network device's interference measurement time window, the terminal can determine the uplink time unit boundary based on the first time advance and send uplink data within the determined uplink time unit boundary within the network device's interference measurement time window. This example corresponds to a scenario where the time window for network device interference measurement is directly specified. In this scenario, the first time advance can be the time advance corresponding to the time window specifically designated for network device interference measurement.

[0153] For example, if the first time window determined by the terminal is the time window for applying the first time advance, the terminal can directly determine the uplink time unit boundary based on the first time advance within that time window, and then send uplink data using the determined uplink time unit boundary within the first time window. This scenario could be where the terminal directly determines the time window for applying the first time advance, and the time window for applying the first time advance may or may not be related to interference measurement by network equipment; this disclosure does not impose any limitations on this.

[0154] This disclosure determines the corresponding timing advance through a time window, enabling the terminal to use an appropriate timing advance to determine the uplink time unit boundary and send uplink data under appropriate circumstances. This can reduce the number of symbols occupied by network devices before and after uplink / downlink handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0155] In the communication method provided in the embodiments of this disclosure, at least two timing advances include a second timing advance. Figure 9 This is a flowchart illustrating yet another communication method according to an exemplary embodiment. For example... Figure 9 As shown, the method may also include the following steps:

[0156] In step S31, a second time window is determined.

[0157] In some embodiments, at least two time advances may include a second time advance.

[0158] In some embodiments, the terminal may further determine a second time window. The second time window does not overlap with the first time window in the time domain.

[0159] Understandably, since the second time window does not overlap with the first time window in the time domain, the second time window can be a time window during which the network device does not perform interference measurements. And / or, the second time window can be a time window for applying the second timing advance.

[0160] For example, the terminal receives configuration information sent by the network device, which may indicate a second time window. The terminal determines the second time window based on this configuration information.

[0161] It is understood that the terminal can directly determine the time window during which the network device does not perform interference measurements through configuration information. In some cases, the terminal can use the time window during which interference measurements are not performed as the second time window, and execute subsequent steps S32 within that time window. The terminal can also directly determine the time window for applying the second timing advance through configuration information, and execute steps S32 within that time window. The terminal can also determine the first time window through configuration information and implicitly indicate the second time window. That is, any time window other than the first time window can be considered the second time window. However, it should be understood that the time window for applying the second timing advance can be either the time window during which the network device does not perform interference measurements or the time window during which the network device performs interference measurements; this disclosure does not limit this.

[0162] For example, the configuration information received by the terminal may include one or more parameters such as the configuration period of the second time window, the measurement time slot offset or measurement symbol offset, and the number of duration time slots or symbols of the second time window. Based on the configuration period, measurement time slot offset or measurement symbol offset, and the number of duration time slots or symbols in the configuration information, the terminal can determine the second time window. Of course, the second time window can be a time window in which the network device does not perform interference measurements, or a time window in which a second timing advance is applied; this disclosure does not limit this. Specifically, the time window in which the second timing advance is applied can be a time window in which the network device does not perform interference measurements, or a time window in which the network device performs interference measurements.

[0163] In some cases, configuration information may include parameters based on OFDM symbols, slots, frames, or subframes, such as one or more of the following parameters: OFDM symbol offset, slot offset, frame offset, subframe offset, number of continuous OFDM symbols in the first time window, number of continuous slots in the first time window, number of continuous frames in the first time window, and number of continuous subframes in the first time window.

[0164] For example, the terminal determines a second time window based on a second predefined rule. This second predefined rule may predefine time windows where network devices do not perform interference measurements, or second time windows applying a second time advance. For instance, the second predefined rule may predefine which time domains are designated as time windows where network devices do not perform interference measurements, or which time domains are designated as second time windows applying the second time advance. The terminal can then determine the second time window based on this second predefined rule.

[0165] For example, the second predefined rule can predefine the duration of M time units and their offsets. The time unit can be an OFDM symbol, OFDM slot, frame, or subframe. Assuming a second time window consists of 10 OFDM slots, the second predefined rule can predefine the start slot and duration, or the start slot and end slot. For instance, with a start slot of 0, slots 0 to 9 within the same frame form one time window, slots 10 to 19 form another, and so on. Similarly, assuming a time unit offset of 2, within the same frame, slots 2 to 11 form one time window, slots 12 to 21 form another, and so on.

[0166] In some embodiments, it is assumed that the second time window coincides with the second N. TA，offset Related. Therefore, in the first predefined rule for the predefined time offset, a second N can also be predefined. TA，offset The associated window index. This further indicates the second N. TA，offset The correlation with the second time window.

[0167] For example, the terminal can determine a first time window and use time windows outside the first time window as a second time window. The method for determining the first time window can be referred to the corresponding description in S21, and will not be repeated here.

[0168] Assuming the second time window can be the time window when the network device is not performing interference measurements, within this second time window, the terminal uses a second timing advance to determine the uplink time unit boundaries. This second timing advance can be considered the timing advance used by the terminal when the network device is not performing interference measurements. In some cases, the second timing advance can be set to be greater than or equal to 0. For example... Figure 7 As shown, when the second time advance is greater than 0, time is reserved for network devices to perform uplink / downlink switching. This reduces the number of other symbols occupied by the network devices during uplink / downlink switching, minimizes the situation where occupied symbols cannot communicate, increases the number of available symbols, and thus improves data transmission efficiency. When the second time advance is equal to 0, it can be configured to be the same as the first time advance, meaning only one time advance needs to be configured, reducing the communication overhead caused by configuring the time advance.

[0169] S12, which determines the uplink time unit boundary based on at least two time advances, may also include the following steps:

[0170] In step S32, within the second time window, the uplink time unit boundary is determined based on the second time advance.

[0171] In some embodiments, the terminal may determine the uplink time unit boundary based on the second time advance within the second time window determined in S31.

[0172] In other words, the terminal can determine the uplink time unit boundary based on the second timing advance within a time window when the network device does not perform interference measurements. And / or, the terminal can determine the uplink time unit boundary based on the second timing advance within a time window where the second timing advance is applied. And / or, the terminal can determine the uplink time unit boundary based on the second timing advance within a time window other than the first time window.

[0173] For example, a terminal can determine the time window during which the network device will not perform interference measurements, and can pre-set the time window during which the network device will not perform interference measurements to correspond to a second timing advance. Then, within the time window during which the network device will not perform interference measurements, the terminal can determine the uplink time unit boundary based on the second timing advance. And within the time window during which the network device will not perform interference measurements, it can send uplink data using the determined uplink time unit boundary. It can be understood that this example corresponds to a scenario where the time window during which the network device will not perform interference measurements is directly indicated. In this scenario, the second timing advance can be the timing advance specifically corresponding to the time window during which the network device will not perform interference measurements.

[0174] For example, if the second time window determined by the terminal is the time window for applying the second time advance, the terminal can directly determine the uplink time unit boundary based on the second time advance within that time window, and then send uplink data using the determined uplink time unit boundary within the second time window. This scenario can be one where the terminal directly determines the time window for applying the second time advance. The time window for applying the second time advance may or may not be related to whether the network device performs interference measurements; this disclosure does not impose any limitations on this.

[0175] For example, if the terminal determines a first time window and then designates a second time window (excluding the first time window), the terminal can determine the uplink time unit boundary within this second time window based on the second time advance. The terminal can then send uplink data within the determined uplink time unit boundary within the second time window. Of course, in this case, the correspondence between the second time window and the second time advance can be pre-defined.

[0176] This disclosure determines the corresponding timing advance through a time window, enabling the terminal to use an appropriate timing advance to determine the uplink time unit boundary and send uplink data under appropriate circumstances. This can reduce the number of symbols occupied by network devices before and after uplink / downlink handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0177] In the communication method provided in this disclosure embodiment, the first time window and / or the second time window can be determined by at least one of the following methods: receiving second configuration information and determining the first time window and / or the second time window based on the second configuration information; or determining the first time window and / or the second time window based on a second predefined rule.

[0178] In some embodiments, the terminal may receive second configuration information. Based on the received second configuration information, the terminal may determine a first time window and / or a second time window.

[0179] For example, the terminal receives second configuration information sent by the network device. This second configuration information is used to indicate a first time window and / or a second time window. The terminal can determine the first time window and / or the second time window based on the received second configuration information.

[0180] For example, the second configuration information can indicate a first time window and / or a second time window. The first time window can be related to the first N... TA，offset Correspondingly, the second time window can be matched with the second N. TA，offset Correspondingly. In some cases, a first time window can be set as the time window corresponding to when the network device performs interference measurement, and a second time window as the time window corresponding to when the network device does not perform interference measurement. Of course, the first time window can also be the time window corresponding to when the network device does not perform interference measurement, and the second time window can also be the time window corresponding to when the network device performs interference measurement; this disclosure does not limit this. The terminal can determine the above-mentioned first time window and / or second time window based on the received second configuration information, so that the terminal can subsequently base its decisions on the corresponding N within the first time window and / or second time window. TA，offset Determine the uplink time unit boundary and send uplink data.

[0181] It is clear that this disclosure configures the first N associated with the first time window. TA，offset And the second N associated with the second time window TA，offset It can be guaranteed that when the first N... TA，offset When it is less than or equal to 0, such as Figure 6 As shown, ISI interference is avoided between the terminal's uplink data transmission and the reference signal transmitted by neighboring cell network devices within the first time window. Furthermore, when the second N... TA，offset When it is greater than 0, such as Figure 7As shown, this can ensure that the number of other symbols occupied by network devices for uplink and downlink switching is reduced during the second time window, thereby increasing the number of available symbols and improving data transmission efficiency.

[0182] For example, the second configuration information can be carried in RRC signaling, MAC CE signaling, and / or DCI.

[0183] For example, a terminal can receive an RMR configuration sent by a network device. Based on the corresponding information indicated in the RMR, the terminal determines a first time window and / or a second time window. The RMR can be carried by RRC signaling, MAC CE signaling, and / or DCI. For instance, it can be carried by one or more of these signaling methods. For example, RRC signaling can indicate a portion of the time window, and DCI can be used to activate one or more of the multiple time windows indicated by RRC, thereby determining the first and / or second time windows. Afterward, the terminal can, within the time domain corresponding to the first and / or second time windows, perform operations based on the corresponding N... TA，offset Determine the uplink time unit boundary and send uplink data.

[0184] For the first time window, the terminal can receive second configuration information, which indicates the first time window. The terminal can receive second configuration information indicating the time window for the network device to perform interference measurements, and the terminal can use this time window as the first time window. Alternatively, the terminal can receive second configuration information indicating the time window for applying a first timing advance, and the terminal can use this time window as the first time window.

[0185] For example, the second configuration information may include one or more parameters such as the configuration period of the first time window, the measurement time slot offset or measurement symbol offset, and the number of duration time slots or symbols of the first time window. The terminal can determine the first time window based on one or more parameters such as the configuration period, measurement time slot offset or measurement symbol offset, and the number of duration time slots or symbols in the configuration information.

[0186] In some cases, the second configuration information may include parameters related to the first time window. For example, parameters based on OFDM symbols, slots, frames, or subframes, such as one or more of the following parameters: OFDM symbol offset, slot offset, frame offset, subframe offset, number of continuous OFDM symbols in the first time window, number of continuous slots in the first time window, number of continuous frames in the first time window, and number of continuous subframes in the first time window.

[0187] Similarly, for the second time window, the terminal can receive second configuration information, which indicates the second time window. The terminal can receive second configuration information indicating a time window during which the network device does not perform interference measurements, and the terminal can use this time window as the second time window. Alternatively, the terminal can receive second configuration information indicating a time window for applying a second timing advance, and the terminal can use this time window as the second time window. Or, the terminal can receive second configuration information indicating a first time window, and the terminal can use everything outside the first time window as the second time window.

[0188] For example, the second configuration information may include one or more parameters such as the configuration period of the second time window, the measurement time slot offset or measurement symbol offset, and the number of duration time slots or symbols of the second time window. The terminal can determine the second time window based on one or more parameters such as the configuration period, measurement time slot offset or measurement symbol offset, and the number of duration time slots or symbols in the configuration information.

[0189] In some cases, the second configuration information may include parameters related to the second time window. For example, parameters based on OFDM symbols, slots, frames, or subframes, such as one or more of the following parameters: OFDM symbol offset, slot offset, frame offset, subframe offset, number of continuous OFDM symbols in the second time window, number of continuous slots in the second time window, number of continuous frames in the second time window, and number of continuous subframes in the second time window.

[0190] In some embodiments, the terminal may determine a first time window and / or a second time window based on a second predefined rule.

[0191] For example, the second predefined rule predefines a first time window and / or a second time window, such as predefining the use of the first N. TA，offset The first time window, and / or using the second N TA，offset The second time window. In some cases, the first time window can be set as the time window corresponding to when the network device performs interference measurement, and the second time window as the time window corresponding to when the network device does not perform interference measurement. Of course, the first time window can also be the time window corresponding to when the network device does not perform interference measurement, and the second time window can also be the time window corresponding to when the network device performs interference measurement; this disclosure does not limit this. The terminal determines the first time window and / or the second time window according to a predefined second predefined rule, so that the terminal can subsequently, within the time domain corresponding to the first time window and / or the second time window, based on the corresponding N... TA，offset Determine the uplink time unit boundary and send uplink data.

[0192] For example, the second predefined rule can predefine N and / or M time units, where each time unit can be an OFDM symbol, OFDM slot, frame, or subframe. Assuming a first time window consists of 10 OFDM slots and a second time window consists of 5 OFDM slots, the second predefined rule can predefine the start slot and duration of each time window, or the start and end slots of each time window. For example, within the same frame, slots 0 to 9 form a first time window, slots 10 to 14 form a second time window, and so on. Of course, the second predefined rule can also define offset parameters for the time windows. Assuming an offset parameter of 2, within the same frame, slots 2 to 11 form a first time window, slots 12 to 16 form a second time window, and so on.

[0193] In some embodiments, it is assumed that the first time window and the first N TA，offset Related, and / or the second time window with the second N TA，offset Related. Therefore, in the first predefined rule for the predefined time offset, a first N can also be predefined. TA，offset Associated window index, and / or predefined second N TA，offset The associated window index. This further indicates the first N. TA，offset The correlation with the first time window, and / or the indication of the second N TA，offset The correlation with the second time window.

[0194] In some embodiments, the terminal may determine a first time window and / or a second time window based on second configuration information and a second predefined rule.

[0195] For example, the terminal can first determine whether it has received the second configuration information. If the terminal has received the second configuration information, it can determine a first time window and / or a second time window based on the second configuration information. If the terminal has not received the second configuration information within a second preset time period, the terminal can determine the first time window and / or the second time window based on a second predefined rule. Alternatively, the second configuration information received by the terminal may only indicate the first time window or the second time window, that is, the second configuration information does not indicate all of at least two time windows. The terminal can determine the time windows not indicated in the second configuration information based on the second predefined rule.

[0196] For example, consider two time windows as a case where there are at least two time windows. The two time windows can include a first time window and a second time window.

[0197] In some cases, if the terminal receives the second configuration information within a second preset time period, the terminal can determine the first time window and the second time window based on the second configuration information. In other cases, if the terminal does not receive the second configuration information within the second preset time period, the terminal can determine the first time window and the second time window based on a second preset rule. For example, the second preset rule may pre-define a time window for network devices to perform interference detection, or pre-define the application of the first N... TA，offset The time window; and, the second preset rule pre-defines the time window during which network devices do not perform interference detection, or pre-defines the application of the second N. TA，offset The time window can be either predefined as a first time window with an implicit indication of a second time window (i.e., anything outside the first time window is considered the second time window). The terminal can determine the first and second time windows based on a second preset rule.

[0198] In other cases, the second configuration information may indicate only one of the first and second time windows. The terminal can determine the time window indicated by the received second configuration information. In this case, the terminal can further determine another unindicated time window based on a second predefined rule. Assume the terminal receives the second configuration information and determines the first time window based on it. Simultaneously, a second time window is predefined in the second predefined rule; therefore, the terminal can determine the second time window based on the second predefined rule.

[0199] For example, it can be assumed that the terminal receives the RMR configuration within a second preset time period and determines a first time window or a second time window based on the RMR configuration. It can also be assumed that a second predefined rule predefines time windows that are not determined in the first or second time window; in this case, the terminal can also determine time windows not indicated in the second configuration information based on the second predefined rule. In some cases, one of the first and second time windows may be a time window where the network device performs interference measurements, while the other may be a time window where the network device does not perform interference measurements.

[0200] It is understood that the second predefined rule defines the first time window and the second time window, which can be referred to the description of the foregoing embodiments, and will not be repeated here.

[0201] Of course, in the above embodiments, the terminal determining at least two time windows based on the second configuration information can be executed when the terminal receives the second configuration information, or at some point in time after the terminal receives the second configuration information. This disclosure does not limit this. Furthermore, in the above embodiments, the terminal determining at least two time windows based on the second predefined rule can be executed at any point in time based on the second predefined rule; this disclosure does not limit this either.

[0202] It is understandable that the aforementioned second preset time can be a time period during which the terminal determines whether it has received the second configuration information. For example, a second preset time can be pre-defined to allow the terminal to determine whether it has received the second configuration information within that time period, or to determine all of the at least two time windows based on the second configuration information. For instance, the start time and duration of the second preset time can be pre-defined, or the start time and end time of the preset second time can be pre-defined. If the terminal does not receive the second configuration information within the time domain corresponding to the second preset time, or has not determined all of the at least two time windows based on the second configuration information, the terminal can further determine the remaining undetermined time advance amount through a second predefined rule.

[0203] In some embodiments, the second preset time may be defined based on OFDM symbols, OFDM slots, frames, or subframes, and this disclosure does not limit it.

[0204] It should be understood that the aforementioned second preset time can be set arbitrarily according to the actual situation, and this disclosure does not impose any restrictions.

[0205] In some embodiments, the second configuration information may be any one or more combinations of RRC signaling, MAC CE signaling and / or DCI, without limitation in this disclosure.

[0206] It is understood that in this embodiment, the terminal can jointly determine the first time window and / or the second time window based on the second configuration information and the second predefined rules.

[0207] This disclosure provides multiple methods for determining time windows, enabling terminals to use appropriate time advances to determine uplink time unit boundaries within the corresponding time window and transmit uplink data. This can reduce the number of symbols required for uplink / downlink handover by network devices before and after the handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0208] In the communication method provided in this embodiment, the terminal does not expect to send uplink channels and / or uplink signals in the first time unit after the first time window and / or in the last time unit within the first time window.

[0209] In some embodiments, the terminal does not expect to transmit uplink channels and / or uplink signals in the first time unit after the first time window.

[0210] For example, in some cases, network devices performing uplink / downlink switching may occupy the first time unit after the downlink / uplink switching, such as an OFDM symbol or OFDM time slot. Data transmitted by the terminal during this time unit cannot be received by the network device. Therefore, the terminal does not expect to transmit uplink channels and / or uplink signals during this time unit.

[0211] For example, the uplink channel may include one or more of the physical uplink shared channel (PUSCH) and the physical uplink control channel (PUCCH). The uplink signal may be a sounding reference signal (SRS).

[0212] In some embodiments, the terminal does not expect to transmit uplink channels and / or uplink signals in the last time unit within the first time window.

[0213] For example, in some cases, network devices may occupy the last time unit before the uplink / downlink transition, such as an OFDM symbol or OFDM time slot, during the uplink / downlink transition. Data transmitted by the terminal during this time unit cannot be received by the network device. Therefore, the terminal does not expect to transmit uplink channels and / or uplink signals during this time unit.

[0214] For example, the uplink channel may include one or more of PUSCH and PUCCH. The uplink signal may be SRS.

[0215] It is understood that "not expecting" in this disclosure means not caring whether the events described below will occur. For example, if a terminal does not expect to receive information A, it means that the terminal does not care whether it can receive information A. In other words, the peer can choose not to send information A, in which case the terminal will not be able to receive information A. Alternatively, the peer can still send information A, but the terminal can choose to ignore information A, or discard or mark it as invalid after receiving information A. Of course, this disclosure does not limit the specific implementation process.

[0216] In some embodiments, the terminal does not expect to transmit uplink channels and / or uplink signals in multiple time units adjacent to the first time window.

[0217] For example, in some cases, network devices may occupy multiple adjacent time units after the downlink / uplink transition, such as OFDM symbols or OFDM time slots. Data transmitted by the terminal during these multiple time units cannot be received by the network device. Therefore, the terminal does not expect to transmit uplink channels and / or uplink signals during these multiple time units.

[0218] For example, the uplink channel may include one or more of PUSCH and PUCCH. The uplink signal may be SRS.

[0219] In some embodiments, the terminal does not expect to transmit uplink channels and / or uplink signals in the last plurality of time units within the first time window.

[0220] For example, in some cases, network devices may occupy the last few time units before the uplink / downlink transition, such as OFDM symbols or OFDM time slots. Data transmitted by the terminal during these multiple time units cannot be received by the network device. Therefore, the terminal does not expect to transmit uplink channels and / or uplink signals during these time units.

[0221] For example, the uplink channel may include one or more of PUSCH and PUCCH. The uplink signal may be SRS.

[0222] This disclosure improves data transmission efficiency by not expecting to transmit channels and / or signals in specific time units, thereby avoiding data transmission failures caused by uplink / downlink switching of network devices.

[0223] In the communication method provided in this embodiment, the terminal does not expect to receive downlink channels and / or downlink signals in the first time unit after the first time window and / or in the last time unit within the first time window.

[0224] In some embodiments, in the first time unit following the first time window, the terminal does not expect to receive downlink channels and / or downlink signals.

[0225] For example, in some situations, network devices performing uplink / downlink switching may occupy the first time unit after the uplink / downlink switch, such as an OFDM symbol or OFDM time slot. During this time unit, the network device cannot transmit data. Therefore, the terminal does not expect to receive downlink channels and / or downlink signals during this time unit.

[0226] For example, the downlink channel may include one or more of the physical downlink shared channel (PDSCH) and the physical downlink control channel (PDCCH). The downlink signal may be CSI-RS.

[0227] In some embodiments, the terminal does not expect to receive downlink channels and / or downlink signals in the last time unit within the first time window.

[0228] For example, in some cases, network devices performing uplink / downlink switching may occupy the last time unit before the downlink / uplink switching, such as an OFDM symbol or OFDM time slot. During this time unit, the network device cannot transmit data. Therefore, the terminal does not expect to receive downlink channels and / or downlink signals during this time unit.

[0229] For example, the downlink channel may include one or more of PDSCH and PDCCH. The downlink signal may be CSI-RS.

[0230] In some embodiments, the terminal does not expect to receive downlink channels and / or downlink signals in multiple time units following the first time window.

[0231] For example, in some situations, network devices performing uplink / downlink switching may occupy multiple time units after the uplink / downlink switching, such as OFDM symbols or OFDM time slots. During these multiple time units, the network device cannot transmit data. Therefore, the terminal does not expect to receive downlink channels and / or downlink signals during these time units.

[0232] For example, the downlink channel may include one or more of PDSCH and PDCCH. The downlink signal may be CSI-RS.

[0233] In some embodiments, during the last plurality of time units within the first time window, the terminal does not expect to receive downlink channels and / or downlink signals.

[0234] For example, in some cases, network devices may occupy the last few time units before the downlink / uplink transition, such as OFDM symbols or OFDM time slots. During these multiple time units, the network device cannot transmit data. Therefore, the terminal does not expect to receive downlink channels and / or downlink signals during these time units.

[0235] For example, the downlink channel may include one or more of PDSCH and PDCCH. The downlink signal may be CSI-RS.

[0236] This disclosure improves data transmission efficiency by not expecting to receive channels and / or signals at specific time units, thereby avoiding data transmission failures caused by uplink / downlink switching of network devices.

[0237] In the communication method provided in this embodiment, the first time advance is less than or equal to 0.

[0238] In some embodiments, the first lead time may be less than or equal to 0.

[0239] For example, the first N TA，offset Less than 0. Or, the first N TA，offset It equals 0.

[0240] It is understandable that when the first N TA，offset Less than or equal to 0, such as Figure 6 As shown, the terminal serving the cell is based on the first N TA，offsetThe defined uplink time unit boundary can be the same as the reference time. This allows the network equipment in the serving cell to receive uplink data sent by terminals in its own cell, as well as reference signals sent by network equipment in neighboring cells, within the CP duration. This avoids ISI interference between uplink data sent by terminals in the serving cell and reference signals sent by network equipment in neighboring cells.

[0241] In some embodiments, considering that network devices may occupy a symbol before or after the uplink / downlink handover during uplink / downlink switching, causing the network device to be unable to transmit data on the occupied symbol, i.e., the symbol is unavailable to the network device. The terminal also needs to perform uplink / downlink switching, and when the terminal uses the first N... TA，offset During uplink / downlink handover, a symbol will be occupied before or after the handover. This prevents the terminal from transmitting data on the occupied symbol, meaning the symbol becomes unavailable to the terminal.

[0242] Therefore, in some embodiments, the symbols for when the terminal and network device are unavailable can be configured to be the same symbol. That is, a certain symbol used by the network device before and after the uplink / downlink handover is the same symbol used by the terminal before and after the uplink / downlink handover.

[0243] In some embodiments, a symbol before and after the uplink / downlink handover that the terminal expects to perform may be configured to be the same symbol before and after the uplink / downlink handover that the network device uses for the uplink / downlink handover.

[0244] Alternatively, in some embodiments, the terminal may be configured not to use a symbol before or after the uplink / downlink handover for uplink / downlink handover, which is a different symbol from the symbol before or after the uplink / downlink handover used by the network device for uplink / downlink handover.

[0245] This disclosure provides a relatively specific first time advance, enabling the terminal to use an appropriate time advance to determine the uplink time unit boundary and transmit uplink data. This ensures that the serving cell network equipment receives uplink data transmitted by terminals in the same serving cell and reference signals for interference measurement transmitted by neighboring cell network equipment within the CP duration, thereby effectively reducing interference between signals and improving data transmission efficiency and interference measurement accuracy.

[0246] In the communication method provided in this embodiment, the second timing advance is greater than or equal to 0.

[0247] In some embodiments, the second timing advance can be greater than or equal to 0.

[0248] For example, the second N TA，offset Greater than 0. Or, the second NTA，offset It equals 0.

[0249] It is understandable that when the second N TA，offset When it equals 0, the second N can be considered TA，offset Can be with the first N TA，offset The same applies. Therefore, only one timing advance needs to be configured, thereby reducing the resource consumption and signaling overhead caused by configuring multiple timing advances.

[0250] When the second N TA，offset When greater than 0, the second N TA，offset It can be compared with N in the TDD scenario of conventional solutions. TA，offset Same. In this case, such as Figure 7 As shown, the terminal is based on the second N TA，offset Determine the uplink time unit boundaries for sending uplink data. As... Figure 7 The starting position corresponding to the first uplink (UL) symbol in the middle. This starting position is... Figure 7 The position indicated by the uplink data transmission time. Figure 7 The N shown TA，offset Represented as based on N TA，offset The specific lead time is determined. Among them, N TA，offset equals N TA，offset T c T c This is a fundamental quantity of time. It can be seen that... Figure 7 The lined area shown represents the delay between the uplink and downlink time units when the terminal transmits uplink data. This delay can be based on a second N. TA，offset Determined. In some examples, assume the second N TA，offset In scenarios where network devices do not perform interference measurements, it is unnecessary to consider whether the network device can receive uplink data sent by the serving cell terminal and reference signals sent by neighboring cell network devices during the CP duration. In this case, the network device can utilize this time period for uplink / downlink handover, thus avoiding the need to occupy a symbol before or after the handover. This avoids the number of symbols occupied during uplink / downlink handover and improves uplink transmission performance.

[0251] This disclosure provides a more specific second timing advance, enabling the terminal to use an appropriate timing advance to determine the uplink time unit boundaries and transmit uplink data. This can reduce the number of symbols required for uplink / downlink handover by network devices before and after the handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0252] Based on the same concept, this disclosure also provides a communication method for use in network devices.

[0253] Figure 10 This is a flowchart illustrating another communication method according to an exemplary embodiment, such as... Figure 10 As shown, the method can be executed by a network device, and the method may include the following steps:

[0254] In step S41, at least two time advances are determined.

[0255] In some embodiments, the network device may determine at least two timing advances. For example, different timing advances may be applicable to different conditions associated with interference measurements performed by the network device, or different timing advances may be applicable to a pre-configured specified scenario, which is not limited herein.

[0256] For example, a network device can determine at least two cell-level TA (Transmission Acquisition) information. This could be two N (Network Addresses). TA，offset Among them, different N TA，offset The applicable conditions differ. For example, different conditions may be related to interference measurements of network devices. Then an N TA，offset It can be correlated with interference measurements of network devices, another N TA，offset This may be related to the fact that network devices do not perform interference measurements.

[0257] For example, network devices can be directly configured with at least two N's. TA，offset Among them, at least two N are configured. TA，offset It can be used in different scenarios. Assume at least two N's. TA，offset Including the first N TA，offset Second N TA，offset Among them, the first N TA，offset This can be applied to the first scenario. The network device can be configured with the first N... TA，offset and the first N TA，offset N is used within the time domain corresponding to the first scenario. TA，offset So that network devices can, within the time domain corresponding to the first scenario, perform operations based on the first N. TA，offset Determine the uplink time unit boundaries for transmitting uplink data. Alternatively, the network device is configured with a first N. TA，offset And configured the first N TA，offset This corresponds to the first scenario, and the corresponding time domain range for the first scenario is configured. Based on the configuration, the network device can determine the first N to use in the first scenario. TA，offset So that the terminal, within the time domain corresponding to the first scenario, uses the first N... TA，offset Determine the uplink time unit boundaries for transmitting uplink data. Similarly, the second N... TA，offset This can be applied to the second scenario. Network devices can be configured with a second N. TA，offset And the second N TA，offsetN is used within the time domain corresponding to the second scenario. TA，offset So that network devices can, within the time domain corresponding to the second scenario, perform operations based on the second N. TA，offset Determine the uplink time unit boundaries for transmitting uplink data. Alternatively, the network device is configured with a second N. TA，offset And configured the second N TA，offset This corresponds to the second scenario, and the corresponding time domain range for the second scenario is configured. Based on this configuration, the network device can determine the second N to use in the second scenario. TA，offset So that the terminal, within the time domain corresponding to the second scenario, can use the second N. TA，offset Determine the uplink time unit boundary for sending uplink data.

[0258] For example, network devices can determine at least two Ns based on predefined rules. TA，offset Among them, at least two Ns can be predefined in the predefined rules. TA，offset For example, based on different usage scenarios, corresponding N can be predefined. TA，offset For example, predefine N corresponding to each scenario in at least two application scenarios. TA，offset Assume at least two N's TA，offset Including the first N TA，offset Second N TA，offset The first N TA，offset It can be applied to the first scenario, and the second N. TA，offset This can be applied to the second scenario. Based on predefined rules, the network device can determine the first N to use in the first scenario. TA，offset And / or determine the second N used in the second scenario TA，offset So that network devices can, within the time domain corresponding to the first scenario, based on the first N... TA，offset Determine the uplink time unit boundaries for transmitting uplink data. And / or, within the time domain corresponding to the second scenario, based on the second N TA，offset The uplink time unit boundary for transmitting uplink data is determined. It is clear that the first scenario and the second scenario are different application scenarios. The time domain range for interference measurement by the network device can be determined by signaling indication or predefined rules. The specific determination method is similar to that of the time window, and can be referred to the description of the corresponding embodiments later; this disclosure will not repeat it further.

[0259] In some cases, one of the first and second scenarios mentioned above can be a scenario where the network device performs interference measurement, and the other scenario can be a scenario where the network device does not perform interference measurement.

[0260] In step S42, the uplink time unit boundary is determined based on at least two time advances.

[0261] In some embodiments, the network device may determine the uplink time unit boundary based on at least two time advances determined in S41.

[0262] For example, a network device can use at least two N values ​​determined in S41, based on the current time domain range of the network device. TA，offset One of the key aspects is determining the uplink time unit boundary. In some cases, the current time domain range of a network device can be related to whether the network device is performing interference measurements. Different time domain ranges can correspond to different scenarios.

[0263] For example, network devices in S41 determine different N based on configuration or predefined rules. TA，offset and each N TA，offset The corresponding scenario. Then the network device can select the N corresponding to that scenario. TA，offset Determine the boundaries of the uplink time unit.

[0264] It can be understood that the uplink time unit boundary represents the time boundary for receiving uplink data, such as the start time boundary for a network device to receive uplink data. Specifically, the uplink time unit boundary can be the boundary of an uplink OFDM symbol or the boundary of an uplink OFDM slot.

[0265] In this disclosure, "boundary" can generally be understood as the starting position, such as the starting position of an OFDM symbol or the starting position of an OFDM slot. Specifically, the uplink time unit boundary can be considered the starting position of an uplink OFDM symbol or uplink OFDM slot. For example, the starting position of an uplink OFDM symbol or uplink OFDM slot can be determined using frame timing.

[0266] In step S43, uplink data is received based on the uplink time unit boundary.

[0267] In some embodiments, the network device may receive uplink data based on the uplink time unit boundary determined in S42. The uplink data may be uplink data sent by a terminal located in the same serving cell as the network device.

[0268] In some embodiments, the network device may also receive a reference signal sent by a neighboring cell network device, which may be a reference signal used for interference measurement. It is understood that the interference measurement may be a CLI measurement.

[0269] It is clear that network devices can, in S42, determine at least two N values. TA，offset The uplink time unit boundary is determined, and uplink data sent by the serving cell terminal is received based on this uplink time unit boundary. Multiple N values ​​can be configured.TA，offset This allows network devices to use appropriate N in different scenarios. TA，offset This involves determining the uplink time unit boundaries in the corresponding scenario. Compared to some solutions that consistently use zeroN... TA，offset In situations where this disclosure can reduce the number of unusable symbols in a cell, and where the scenario involves interference measurements by network equipment, the terminal can also employ appropriate N... TA，offset Determine the uplink time unit boundary to avoid ISI interference with reference signals sent by neighboring cell network devices.

[0270] In some embodiments, to enable the serving cell network device to receive uplink signals from the serving cell terminal and reference signals from neighboring cell network devices during the CP duration, the first N TA，offset It can be less than or equal to 0. For example... Figure 6 As shown, the network device is based on the first N TA，offset Determine the uplink time unit boundaries for transmitting uplink data, and transmit uplink data based on these boundaries. In N TA，offset When T = 0, the time it takes for uplink data to arrive at the network device is equal to the time interval between the arrival of the reference signal sent by the neighboring cell network device and T. delay Among them, T delay This refers to the transmission time of the reference signal from the neighboring cell network device to the serving cell network device. It assumes that the distance between the serving cell network device and the neighboring cell network device is relatively short (e.g., 500m). In most scenarios, T... delay The duration is less than the CP duration in the corresponding OFDM symbol. Based on this, it can be ensured that network devices receive uplink data sent by terminals in the same serving cell and reference signals sent by neighboring cell network devices within the CP range, thereby effectively reducing ISI interference between signals and improving data transmission efficiency and interference measurement accuracy. It can be understood that the reference signal sent by the neighboring cell can be a reference signal used for interference measurement, such as a CLI RS.

[0271] In some embodiments, to ensure the uplink / downlink switching time of network devices and / or terminals, the second N TA，offset It can be greater than 0. For example... Figure 7 As shown, the network device is based on the second N TA，offset Determine the boundaries of the uplink time units for transmitting uplink data. It can be seen that there is a certain time delay between the uplink time units and downlink time units for network devices transmitting uplink data. Figure 7 The diagonally filled area is shown in the diagram. This delay can be based on the second N. TA，offset Determined. In some examples, assume the second N TA，offsetIf the scenario in question involves network devices that do not perform interference measurements, then it is unnecessary to consider whether the network device can receive uplink data sent by the serving cell terminal and reference signals sent by neighboring cell network devices during the CP duration. In this case, the serving cell network device bases its decisions on the second N... TA，offset By defining the uplink time unit boundary for receiving uplink data, the uplink time unit is advanced by a certain amount of time compared to the downlink time unit. When network devices perform uplink / downlink handover, they can utilize this time period for the handover, thus avoiding the need to occupy a symbol before or after the handover. This minimizes the number of symbols occupied during uplink / downlink handover and improves uplink transmission performance.

[0272] This disclosure allows network devices to use multiple different timing advances to determine uplink time unit boundaries and receive uplink data under appropriate circumstances by configuring the terminal with multiple different timing advances. This reduces the number of symbols required for uplink / downlink handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0273] In the communication method provided in this embodiment, determining at least two time advances in S41 may include: determining first configuration information, the first configuration information being used to indicate at least two time advances; sending the first configuration information; and / or, determining at least two time advances based on a first predefined rule.

[0274] In some embodiments, the network device may determine first configuration information. This first configuration information is used to indicate at least two timing advances. The network device may send the first configuration information.

[0275] For example, the network device determines first configuration information. This first configuration information indicates at least two timing advances. The network device may also send this first configuration information to a terminal, so that the terminal can determine at least two timing advances based on the first configuration information.

[0276] For example, the first configuration information can be carried in RRC signaling, MAC CE signaling, and / or DCI.

[0277] For example, the first configuration information is carried on RRC signaling, with at least two Ns. TA，offset For two N TA，offset For example, two Ns. TA，offset It can include the first N TA，offset Second N TA，offset .

[0278] For the first N TA，offset The network device can determine the first RRC signaling, which can be used to indicate the first N. TA，offsetIn some cases, network devices can determine the first RRC signaling and determine the first N. TA，offset This is associated with a first scenario that determines the first RRC signaling. The network device can use the first N within the time domain range corresponding to the first scenario. TA，offset Determine the uplink time unit boundaries to receive uplink data. In another scenario, the network device may determine a first RRC signaling, which indicates a first N... TA，offset And indicated the first N TA，offset This corresponds to the first scenario and indicates the time domain range corresponding to the first scenario. For example, the first RRC signaling indicates the first N corresponding to the first scenario. TA，offset And the time domain range in which the first scenario takes effect. Within the time domain range corresponding to the first scenario, the network device uses the first N... TA，offset Determine the uplink time unit boundaries to receive uplink data.

[0279] Similarly, for the second N TA，offset The network device can determine the second RRC signaling, which can be used to indicate the second N. TA，offset In some cases, network devices can determine the second RRC signaling and the second N. TA，offset This is associated with a second scenario that determines the second RRC signaling. Network devices can use the second N within the time domain corresponding to the second scenario. TA，offset Determine the uplink time unit boundaries to receive uplink data. In another scenario, the network device can determine a second RRC signaling, which instructs a second N... TA，offset And indicated the second N TA，offset This corresponds to the second scenario, and the corresponding time domain range for the second scenario is configured. For example, the second RRC signaling indicates the second N corresponding to the second scenario. TA，offset And the time domain range in which the second scenario takes effect. Within the time domain range corresponding to the second scenario, the network device uses the second N. TA，offset Determine the uplink time unit boundaries to receive uplink data.

[0280] In some embodiments, the second RRC signaling mentioned above may be n-TimingAdvanceOffset signaling.

[0281] In some embodiments, the first RRC signaling and the second RRC signaling mentioned above may be the same RRC signaling. For example, the first RRC signaling and the second RRC may be the same newly defined RRC signaling, or an existing RRC signaling may be reused.

[0282] In some embodiments, the first RRC signaling and the second RRC signaling are different RRC signaling. For example, the first RRC signaling may be the same newly defined RRC signaling, or it may be a reused existing RRC signaling. The second RRC signaling may be n-TimingAdvanceOffset signaling.

[0283] In some embodiments, one of the first and second scenarios can be a scenario where the network device performs interference measurement, and the other scenario can be a scenario where the network device does not perform interference measurement. In this case, it is assumed that the first configuration information indicates two N... TA，offset This can include: N corresponding to the network device performing interference measurement. TA，offset And N corresponding to network devices not performing interference measurements. TA，offset The terminal can determine the N corresponding to the network device when performing interference measurement based on the received first configuration information. TA，offset And N corresponding to network devices not performing interference measurements. TA，offset .

[0284] It is worth noting that the time domain range for interference measurement by the network device in this disclosed solution can be determined by configuration information or predefined rules. For example, the terminal can determine the time domain range for interference measurement by the network device based on rate matching resource (RMR) signaling, and apply the corresponding N within the corresponding time domain range. TA，offset .

[0285] In some embodiments, the network device may determine at least two timing advances based on a first predefined rule.

[0286] For example, multiple N can be predefined. TA，offset For example, N corresponding to the first scene is predefined. TA，offset And N corresponding to the second scenario is predefined. TA，offset The network device determines N corresponding to the predefined first scenario based on the first predefined rule. TA，offset and N corresponding to the predefined second scenario TA，offset It can be assumed that the first predefined rule can predefine N for different use cases. TA，offset This allows network devices to determine N corresponding to different scenarios based on a first predefined rule. TA，offset And within the time domain corresponding to the relevant scenario, use the N corresponding to that scenario. TA，offset Determine the boundaries of the uplink time unit.

[0287] For example, with at least two Ns TA，offset For two N TA，offsetFor example, two Ns. TA，offset It can include the first N TA，offset Second N TA，offset .

[0288] For the first N TA，offset The first N can be predefined. TA，offset That is, the first predefined rule predefines the first N. TA，offset The first predefined rule can predefine the first N. TA，offset and the first N TA，offset This corresponds to the first scenario. The network device can determine the first N corresponding to the first scenario based on the first predefined rule. TA，offset So that network devices can, within the time domain corresponding to the first scenario, perform operations based on the first N... TA，offset Determine the boundaries of the uplink time unit.

[0289] For the second N TA，offset The second N can be predefined. TA，offset That is, the first predefined rule predefines the second N. TA，offset The first predefined rule can predefine the second N. TA，offset and the second N TA，offset This corresponds to the second scenario. The network device can determine the second N corresponding to the second scenario based on the first predefined rule. TA，offset So that network devices can, within the time domain corresponding to the second scenario, perform operations based on the second N. TA，offset Determine the boundaries of the uplink time unit.

[0290] In some embodiments, one of the first and second scenarios can be a scenario where the network device performs interference measurement, and the other scenario can be a scenario where the network device does not perform interference measurement. The time domain range for interference measurement by the network device can be determined by signaling indication or predefined rules. The specific determination method is similar to that of time windows, and can be referred to the description of subsequent corresponding embodiments, which will not be repeated here. In this case, it is assumed that the first predefined rule defines two N... TA，offset This can include: N corresponding to the network device performing interference measurement. TA，offset And N corresponding to network devices not performing interference measurements. TA，offset The terminal can determine the corresponding N when the network device performs interference measurement based on the first predefined rule. TA，offset And N corresponding to network devices not performing interference measurements. TA，offset .

[0291] In some embodiments, the network device may determine at least two timing advances based on first configuration information and first predefined rules.

[0292] For example, a network device can first determine the first configuration information. If the network device has not determined the first configuration information, it can determine at least two timing advances based on a first predefined rule. Alternatively, if the first configuration information only indicates one or more of the at least two timing advances, the network device can determine the timing advances not indicated in the first configuration information based on the first predefined rule.

[0293] For example, with at least two Ns TA，offset For two N TA，offset For example, two Ns. TA，offset It can include the first N TA，offset Second N TA，offset .

[0294] In some cases, network devices are configured with the first N. TA，offset Second N TA，offset For example, a first RRC signaling and a second RRC signaling are determined. The first RRC signaling is used to indicate the first N. TA，offset And the second RRC signaling is used to indicate the second N TA，offset The first RRC signaling and the second RRC signaling can be the same RRC signaling or different RRC signaling. In other cases, if the network device is not configured with the first N... TA，offset Second N TA，offset Then the network device can determine the first N based on the first preset rule. TA，offset Second N TA，offset For example, the first preset rule predefines the first N corresponding to the first scenario. TA，offset The second N corresponding to the second scenario TA，offset Network devices can determine the corresponding N for a given scenario based on a first preset rule. TA，offset .

[0295] In other cases, the network device may only be configured with the first N. TA，offset Second N TA，offset One of N in TA，offset In this scenario, the network device can further determine another unconfigured N based on the first predefined rule. TA，offset Assume the network device is configured with the first N corresponding to the first scenario. TA，offset Meanwhile, the first predefined rule predefines the second N corresponding to the second scenario. TA，offset Then the network device can determine the second N corresponding to the second scenario based on the first predefined rule. TA，offset .

[0296] For example, it can be assumed that the network device determines the n-TimingAdvanceOffset signaling and, based on the n-TimingAdvanceOffset signaling, indicates the second N corresponding to the second scenario. TA，offset We can assume the second scenario is one where network devices do not perform interference measurements. When the first predefined rule predefines the first N corresponding to the first scenario... TA，offset Then the network device can also determine the first N corresponding to the first scenario based on the first predefined rule. TA，offset The first scenario could be a scenario where network devices are performing interference measurements.

[0297] Of course, in the above embodiments, the network device determines at least two Ns based on the first predefined rule. TA，offset It can be executed when the network device is in a corresponding scenario, or the network device can predetermine at least two Ns based on a first predefined rule at a certain point in time. TA，offset So that when the network device is in the appropriate scenario, it can determine the N. TA，offset This disclosure does not limit the determination of the uplink time unit boundary.

[0298] In some embodiments, the first configuration information may be carried by any one or more combinations of RRC signaling, MAC CE signaling and / or DCI, without limitation in this disclosure.

[0299] It is understood that in this embodiment, the network device can jointly determine at least two timing advances based on the first configuration information and the first predefined rules.

[0300] This disclosure provides multiple methods for determining at least two timing advances, enabling network devices to use appropriate timing advances to determine uplink time unit boundaries and receive uplink data under suitable circumstances. This can reduce the number of symbols required for uplink / downlink handover by network devices before and after the handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0301] In the communication method provided in this embodiment, at least two timing advances include a first timing advance. Figure 11 This is a flowchart illustrating another communication method according to an exemplary embodiment. For example... Figure 11 As shown, the method may also include the following steps:

[0302] In step S51, a first time window is determined.

[0303] In some embodiments, at least two time advances may include a first time advance.

[0304] In some embodiments, the network device may further determine a first time window. This first time window may be a time window for the network device to perform interference measurements. And / or, the first time window may be a time window for applying a first timing lead.

[0305] For example, the configuration information determined by the network device can indicate the first time window.

[0306] It is understood that the configuration information determined by the network device can directly indicate the time window for the network device to perform interference measurement. The network device can use the time window for interference measurement as the first time window, and execute subsequent steps S52 within this time window. The configuration information determined by the network device can also directly indicate the time window for applying the first time advance, and execute steps S52 within this time window. However, it should be understood that the time window for applying the first time advance can be the time window for the network device to perform interference measurement, or it can be a different time window; this disclosure does not limit this.

[0307] For example, the network device can configure one or more parameters such as the configuration period of the first time window, the measurement time slot offset or measurement symbol offset, and the number of duration time slots or symbols of the first time window. Based on one or more parameters such as the configuration period, measurement time slot offset or measurement symbol offset, and the number of duration time slots or symbols, the first time window can be indicated. Of course, the first time window can be a time window in which the network device performs interference measurements, or a time window in which the network device does not perform interference measurements; this disclosure does not limit this. Specifically, the time window in which the first time lead is applied can be a time window in which the network device performs interference measurements, or a time window in which the network device does not perform interference measurements.

[0308] In some cases, configuration information may include parameters based on OFDM symbols, slots, frames, or subframes, such as one or more of the following parameters: OFDM symbol offset, slot offset, frame offset, subframe offset, number of continuous OFDM symbols in the first time window, number of continuous slots in the first time window, number of continuous frames in the first time window, and number of continuous subframes in the first time window.

[0309] For example, a network device determines a first time window based on a second predefined rule. This second predefined rule can predefine time windows for interference measurements performed by the network device, or predefine time windows for applying a first time advance. For instance, the second predefined rule might predefine which time domains are designated as time windows for interference measurements or as first time windows for applying the first time advance. The network device can then determine the first time window based on this second predefined rule.

[0310] For example, the second predefined rule can predefine N duration time units and their offsets. A time unit can be an OFDM symbol, OFDM slot, frame, or subframe. Assuming a first time window consists of 10 OFDM slots, the second predefined rule can predefine a start slot and duration, or a start slot and an end slot. For instance, with a start slot of 0, slots 0 to 9 within the same frame form one time window, slots 10 to 19 form another, and so on. Similarly, assuming a time unit offset of 2, within the same frame, slots 2 to 11 form one time window, slots 12 to 21 form another, and so on.

[0311] In some embodiments, it is assumed that the first time window and the first N TA，offset Related. Therefore, in the first predefined rule for the predefined time offset, a first N can also be predefined. TA，offset The associated window index. This further indicates the first N. TA，offset The correlation with the first time window.

[0312] Assuming the first time window can be the time window during which the network device performs interference measurements, within this first time window, the network device uses a first time advance to determine the uplink time unit boundaries. This first time advance can be considered the time advance used by the network device during interference measurements. In some cases, the first time advance can be set to less than or equal to 0, for example... Figure 6 As shown, this allows the serving cell network device to receive uplink data sent by terminals in the same cell, as well as reference signals sent by neighboring cell network devices for interference measurement, during the CP duration, thereby avoiding ISI interference between uplink data sent by terminals in the same cell and reference signals sent by neighboring cell network devices.

[0313] S42, which determines the uplink time unit boundary based on at least two time advances, may also include the following steps:

[0314] In step S52, within the first time window, the uplink time unit boundary is determined based on the first time advance.

[0315] In some embodiments, the network device may determine the uplink time unit boundary based on a first time advance within a first time window determined in S51.

[0316] In other words, network devices can determine uplink time unit boundaries based on a first timing advance within the time window during which they perform interference measurements. And / or, network devices can determine uplink time unit boundaries based on the first timing advance within the time window during which the first timing advance is applied.

[0317] For example, a network device can determine a time window for interference measurement and pre-set a time window corresponding to a first time advance. Then, within the interference measurement time window, the network device can determine the uplink time unit boundary based on the first time advance. Within the interference measurement time window, it can receive uplink data and reference signals using the determined uplink time unit boundaries. This example corresponds to a scenario where the time window for interference measurement is directly determined. In this scenario, the first time advance can be the time advance specifically designated for the interference measurement time window.

[0318] For example, if the first time window determined by the network device is the time window for applying the first time advance, then the network device can directly determine the uplink time unit boundary based on the first time advance within that time window. It can then receive uplink data and reference signals within the determined uplink time unit boundary within the first time window. This scenario could involve the network device directly determining the time window for applying the first time advance. The time window for applying the first time advance may or may not be related to the network device's interference measurement; this disclosure does not impose any limitations on this.

[0319] This disclosure determines the corresponding timing advance through a time window, enabling network devices to use an appropriate timing advance to determine the uplink time unit boundary and receive uplink data under different circumstances. This reduces the number of symbols required for uplink / downlink handover by network devices before and after the handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0320] In the communication method provided in the embodiments of this disclosure, at least two timing advances include a second timing advance. Figure 12 This is a flowchart illustrating yet another communication method according to an exemplary embodiment. For example... Figure 12 As shown, the method may also include the following steps:

[0321] In step S61, a second time window is determined.

[0322] In some embodiments, at least two time advances may include a second time advance.

[0323] In some embodiments, the network device may further determine a second time window. The second time window does not overlap with the first time window in the time domain.

[0324] Understandably, since the second time window does not overlap with the first time window in the time domain, the second time window can be a time window during which the network device does not perform interference measurements. And / or, the second time window can be a time window for applying the second timing advance.

[0325] For example, configuration information determined by the network device can indicate a second time window.

[0326] It is understood that network devices can directly determine the time window during which they do not perform interference measurements through configuration information. In some cases, the network device can use the time window during which it does not perform interference measurements as a second time window, and execute subsequent steps S62 within that time window. The network device can also directly determine the time window for applying the second time advance through configuration information and execute steps S62 within that time window. The network device can also determine the first time window through configuration information and implicitly indicate the second time window. That is, any time window other than the first time window can be considered the second time window. However, it should be understood that the time window for applying the second time advance can be either the time window during which the network device does not perform interference measurements or the time window during which the network device performs interference measurements; this disclosure does not limit this.

[0327] For example, the network device can configure one or more parameters such as the configuration period of the second time window, the measurement time slot offset or measurement symbol offset, and the number of duration time slots or symbols in the second time window. Based on one or more parameters such as the configuration period, measurement time slot offset or measurement symbol offset, and the number of duration time slots or symbols, the second time window can be indicated. Of course, the second time window can be a time window in which the network device does not perform interference measurements, or a time window in which the second time advance is applied; this disclosure does not limit this. Specifically, the time window in which the second time advance is applied can be a time window in which the network device does not perform interference measurements, or a time window in which the network device performs interference measurements.

[0328] In some cases, configuration information may include parameters based on OFDM symbols, slots, frames, or subframes, such as one or more of the following parameters: OFDM symbol offset, slot offset, frame offset, subframe offset, number of continuous OFDM symbols in the first time window, number of continuous slots in the first time window, number of continuous frames in the first time window, and number of continuous subframes in the first time window.

[0329] For example, the terminal determines a second time window based on a second predefined rule. This second predefined rule may predefine time windows where network devices do not perform interference measurements, or second time windows applying a second time advance. For instance, the second predefined rule may predefine which time domains are designated as time windows where network devices do not perform interference measurements, or which time domains are designated as second time windows applying the second time advance. The network device can then determine its second time window based on this second predefined rule.

[0330] For example, the second predefined rule can predefine the duration of M time units and their offsets. The time unit can be an OFDM symbol, OFDM slot, frame, or subframe. Assuming a second time window consists of 10 OFDM slots, the second predefined rule can predefine the start slot and duration, or the start slot and end slot. For instance, with a start slot of 0, slots 0 to 9 within the same frame form one time window, slots 10 to 19 form another, and so on. Similarly, assuming a time unit offset of 2, within the same frame, slots 2 to 11 form one time window, slots 12 to 21 form another, and so on.

[0331] In some embodiments, it is assumed that the second time window coincides with the second N. TA，offset Related. Therefore, in the first predefined rule for the predefined time offset, a second N can also be predefined. TA，offset The associated window index. This further indicates the second N. TA，offset The correlation with the second time window.

[0332] For example, network devices can determine a first time window and use time windows outside the first time window as a second time window. The method for determining the first time window can be referred to the corresponding description in S51, which will not be repeated here.

[0333] Assuming the second time window can be the time window when the network device is not performing interference measurements, within this second time window, the network device uses a second timing advance to determine the uplink time unit boundaries. This second timing advance can be considered the timing advance used by the network device when it is not performing interference measurements. In some cases, the second timing advance can be set to be greater than or equal to 0. For example... Figure 7 As shown, when the second time advance is greater than 0, time is reserved for network devices to perform uplink / downlink switching. This reduces the number of other symbols occupied by the network devices during uplink / downlink switching, minimizes the situation where occupied symbols cannot communicate, increases the number of available symbols, and thus improves data transmission efficiency. When the second time advance is equal to 0, it can be configured to be the same as the first time advance, meaning only one time advance needs to be configured, reducing the communication overhead caused by configuring the time advance.

[0334] S42, which determines the uplink time unit boundary based on at least two time advances, may also include the following steps:

[0335] In step S62, within the second time window, the uplink time unit boundary is determined based on the second time advance.

[0336] In some embodiments, the network device may determine the uplink time unit boundary based on the second time advance within the second time window determined in S61.

[0337] In other words, the network device can determine the uplink time unit boundary based on the second timing advance within a time window in which the network device does not perform interference measurements. And / or, the network device can determine the uplink time unit boundary based on the second timing advance within a time window in which the second timing advance is applied. And / or, the network device can determine the uplink time unit boundary based on the second timing advance within a time window other than the first time window.

[0338] For example, a network device can determine a time window during which it will not perform interference measurements, and can pre-set a second timing advance corresponding to this time window. Then, within this time window, the network device can determine the uplink time unit boundary based on the second timing advance. And within this time window, it can receive uplink data and reference signals using the determined uplink time unit boundary. This example corresponds to a scenario where the time window during which the network device will not perform interference measurements is directly determined. In this scenario, the second timing advance can be a timing advance specifically designated for the time window during which the network device will not perform interference measurements.

[0339] For example, if the second time window determined by the network device is the time window for applying the second time advance, the network device can directly determine the uplink time unit boundary based on the second time advance within that time window. It can then receive uplink data and reference signals within the determined uplink time unit boundary. This scenario allows the network device to directly determine the time window for applying the second time advance. The time window for applying the second time advance may or may not be related to the network device not performing interference measurements; this disclosure does not impose any limitations on this.

[0340] For example, if a network device determines a first time window and then designates a second time window (excluding the first time window), the network device can determine the uplink time unit boundary within this second time window based on the second time advance. Within the second time window, it can then receive uplink data and reference signals using the determined uplink time unit boundaries. Of course, in this case, the correspondence between the second time window and the second time advance can be pre-defined.

[0341] This disclosure determines the corresponding timing advance through a time window, enabling network devices to use an appropriate timing advance to determine the uplink time unit boundary and receive uplink data under different circumstances. This reduces the number of symbols required for uplink / downlink handover by network devices before and after the handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0342] In the communication method provided in this disclosure, the first time window and / or the second time window can be determined by at least one of the following methods: determining second configuration information, the second configuration information being used to indicate the first time window and / or the second time window; sending the second configuration information; and / or, determining the first time window and / or the second time window based on a second predefined rule.

[0343] In some embodiments, the network device may determine second configuration information. The second configuration information is used to indicate a first time window and / or a second time window. The network device may send the second configuration information.

[0344] For example, the network device determines second configuration information. This second configuration information is used to indicate a first time window and / or a second time window. The network device can send the second configuration information to the terminal so that the terminal can determine the first time window and / or the second time window based on the second configuration information.

[0345] For example, the second configuration information can indicate a first time window and / or a second time window. The first time window can be related to the first N... TA，offset Correspondingly, the second time window can be matched with the second N. TA，offset Correspondingly. In some cases, a first time window can be set as the time window corresponding to when the network device performs interference measurement, and a second time window as the time window corresponding to when the network device does not perform interference measurement. Of course, the first time window can also be the time window corresponding to when the network device does not perform interference measurement, and the second time window can also be the time window corresponding to when the network device performs interference measurement; this disclosure does not limit this. The network device can determine the above-mentioned first time window and / or second time window based on the second configuration information, so that it can subsequently base its calculations on the corresponding N within the first time window and / or second time window. TA，offset Determine the uplink time unit boundaries and receive uplink data.

[0346] It is clear that this disclosure configures the first N associated with the first time window. TA，offset And the second N associated with the second time window TA，offset It can be guaranteed that when the first N... TA，offset When it is less than or equal to 0, such as Figure 6 As shown, ISI interference is avoided between the terminal's uplink data transmission and the reference signal transmitted by neighboring cell network devices within the first time window. Furthermore, when the second N... TA，offset When it is greater than 0, such as Figure 7 As shown, this can ensure that the number of other symbols occupied by network devices for uplink and downlink switching is reduced during the second time window, thereby increasing the number of available symbols and improving data transmission efficiency.

[0347] For example, the second configuration information can be carried in RRC signaling, MAC CE signaling, and / or DCI.

[0348] For example, network devices can configure the RMR and indicate a first time window and / or a second time window using the corresponding information indicated in the RMR. The RMR can be carried by RRC signaling, MAC CE signaling, and / or DCI. For instance, it can be carried by one of these signaling methods, or by multiple methods. For example, it can indicate a portion of the time window via RRC signaling, and then activate one or more of the multiple time windows indicated by RRC via DCI. Afterwards, the terminal can operate within the time domain corresponding to the first and / or second time windows based on the corresponding N. TA，offset Determine the uplink time unit boundary and send uplink data.

[0349] For the first time window, the network device can configure second configuration information to indicate the first time window. This second configuration information indicates the time window in which the network device performs interference measurements, and the network device can use this time window as the first time window. Alternatively, the second configuration information indicates the time window in which a first timing lead is applied, and the network device can use this time window as the first time window.

[0350] For example, the second configuration information may include one or more parameters such as the configuration period of the first time window, the measurement time slot offset or measurement symbol offset, and the number of duration time slots or symbols of the first time window. Based on one or more parameters such as the configuration period, measurement time slot offset or measurement symbol offset, and the number of duration time slots or symbols in the configuration information, the first time window can be indicated.

[0351] In some cases, the second configuration information may include parameters related to the first time window. For example, parameters based on OFDM symbols, slots, frames, or subframes, such as one or more of the following parameters: OFDM symbol offset, slot offset, frame offset, subframe offset, number of continuous OFDM symbols in the first time window, number of continuous slots in the first time window, number of continuous frames in the first time window, and number of continuous subframes in the first time window.

[0352] Similarly, for the second time window, the network device can configure second configuration information to indicate the second time window. This second configuration information may indicate a time window during which the network device will not perform interference measurements, and the network device can use this time window as the second time window. Alternatively, the second configuration information may indicate a time window during which a second timing advance is applied, and the network device can use this time window as the second time window. Or, the second configuration information may indicate a first time window, and the network device can use any time outside the first time window as the second time window.

[0353] For example, the second configuration information may include one or more parameters such as the configuration period of the second time window, the measurement time slot offset or measurement symbol offset, and the number of duration time slots or symbols of the second time window. Based on one or more parameters such as the configuration period, measurement time slot offset or measurement symbol offset, and the number of duration time slots or symbols in the configuration information, the second time window can be indicated.

[0354] In some cases, the second configuration information may include parameters related to the second time window. For example, parameters based on OFDM symbols, slots, frames, or subframes, such as one or more of the following parameters: OFDM symbol offset, slot offset, frame offset, subframe offset, number of continuous OFDM symbols in the second time window, number of continuous slots in the second time window, number of continuous frames in the second time window, and number of continuous subframes in the second time window.

[0355] In some embodiments, the network device may determine a first time window and / or a second time window based on a second predefined rule.

[0356] For example, the second predefined rule predefines a first time window and / or a second time window, such as predefining the use of the first N. TA，offset The first time window, and / or using the second N TA，offset The second time window. In some cases, the first time window can be set as the time window corresponding to when the network device performs interference measurement, and the second time window as the time window corresponding to when the network device does not perform interference measurement. Of course, the first time window can also be the time window corresponding to when the network device performs interference measurement, and the second time window can also be the time window corresponding to when the network device does not perform interference measurement; this disclosure does not limit this. The network device determines the first time window and / or the second time window according to a predefined second predefined rule, so that subsequently, within the time domain range corresponding to the first time window and / or the second time window, based on the corresponding N... TA，offset Determine the uplink time unit boundaries and receive uplink data.

[0357] For example, the second predefined rule can predefine N and / or M time units, where each time unit can be an OFDM symbol, OFDM slot, frame, or subframe. Assuming a first time window consists of 10 OFDM slots and a second time window consists of 5 OFDM slots, the second predefined rule can predefine the start slot and duration of each time window, or the start and end slots of each time window. For example, within the same frame, slots 0 to 9 form a first time window, slots 10 to 14 form a second time window, and so on. Of course, the second predefined rule can also define offset parameters for the time windows. Assuming an offset parameter of 2, within the same frame, slots 2 to 11 form a first time window, slots 12 to 16 form a second time window, and so on.

[0358] In some embodiments, it is assumed that the first time window and the first N TA，offset Related, and / or the second time window with the second N TA，offset Related. Therefore, in the first predefined rule for the predefined time offset, a first N can also be predefined. TA，offset Associated window index, and / or predefined second N TA，offset The associated window index. This further indicates the first N. TA，offset The correlation with the first time window, and / or the indication of the second N TA，offset The correlation with the second time window.

[0359] In some embodiments, the network device may determine a first time window and / or a second time window based on second configuration information and a second predefined rule.

[0360] For example, the network device can first determine the second configuration information and then determine the first time window and / or the second time window based on the second configuration information. If the network device has not determined the second configuration information, it can determine the first time window and / or the second time window based on a second predefined rule. Alternatively, if the network device has only configured the first time window or the second time window, it can determine the time window not indicated in the second configuration information based on the second predefined rule.

[0361] For example, consider two time windows as a case where there are at least two time windows. The two time windows can include a first time window and a second time window.

[0362] In some cases, if the network device is not configured with a first time window and a second time window. For example, the second preset rule pre-defines the time window for the network device to perform interference detection, or pre-defines the application of the first N... TA，offset The time window; and, the second preset rule pre-defines the time window during which network devices do not perform interference detection, or pre-defines the application of the second N. TA，offset The time window can be either predefined as a first time window with an implicit indication of a second time window (i.e., anything outside the first time window is considered the second time window). The terminal can determine the first and second time windows based on a second preset rule.

[0363] In other cases, network devices may configure only one of the first and second time windows. In this case, the network device can further determine the other unconfigured time window based on a second predefined rule. Assume the network device has configured a first time window. Simultaneously, a second time window is predefined in the second predefined rule; then the network device can determine the second time window based on the second predefined rule.

[0364] For example, it can be assumed that the network device is configured with an RMR, which can indicate a first time window or a second time window. It can also be assumed that a second predefined rule predefines time windows that are not configured in either the first or second time window; in this case, the network device can also determine the unconfigured time windows based on the second predefined rule. In some cases, one of the first and second time windows can be the time window during which the network device performs interference measurements, while the other can be the time window during which the network device does not perform interference measurements.

[0365] It is understood that the second predefined rule defines the first time window and the second time window, which can be referred to the description of the foregoing embodiments, and will not be repeated here.

[0366] Of course, in the above embodiments, the network device determines at least two time windows based on the second predefined rule. This can be done at any point in time, and this disclosure does not limit it.

[0367] It should be understood that the aforementioned second preset time can be set arbitrarily according to the actual situation, and this disclosure does not impose any restrictions.

[0368] In some embodiments, the second configuration information may be carried by any one or more combinations of RRC signaling, MAC CE signaling and / or DCI, without limitation by this disclosure.

[0369] It is understood that in this embodiment, the network device can jointly determine the first time window and / or the second time window based on the second configuration information and the second predefined rules.

[0370] This disclosure provides multiple methods for determining time windows, enabling network devices to use appropriate time advances to determine uplink time unit boundaries within the corresponding time window and receive uplink data. This can reduce the number of symbols required for uplink / downlink handover by network devices before and after the handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0371] In the communication method provided in this embodiment, uplink channels and / or uplink signals from the terminal are not received in the first time unit after the first time window, and / or in the last time unit within the first time window.

[0372] In some embodiments, uplink channels and / or uplink signals from the terminal are not received in the first time unit after the first time window.

[0373] For example, in some cases, the uplink / downlink transition performed by network devices may occupy the first time unit after the transition, such as an OFDM symbol or OFDM time slot. Data transmitted by the terminal during this time unit cannot be received by the network device. Therefore, the network device does not receive uplink channels and / or uplink signals from the terminal during this time unit. In other words, the network device does not expect to receive uplink channels and / or uplink signals.

[0374] For example, the uplink channel may include one or more of PUSCH and PUCCH. The uplink signal may be SRS.

[0375] In some embodiments, uplink channels and / or uplink signals from the terminal are not received in the last time unit within the first time window.

[0376] For example, in some cases, network devices may occupy the last time unit before the uplink / downlink transition, such as an OFDM symbol or OFDM time slot, during the uplink / downlink transition. Data transmitted by the terminal during this time unit cannot be received by the network device. Therefore, the network device does not receive uplink channels and / or uplink signals from the terminal during this time unit. In other words, the network device does not expect to receive uplink channels and / or uplink signals.

[0377] For example, the uplink channel may include one or more of PUSCH and PUCCH. The uplink signal may be SRS.

[0378] In some embodiments, the terminal does not expect to transmit uplink channels and / or uplink signals in multiple time units adjacent to the first time window.

[0379] For example, in some cases, network devices may occupy multiple adjacent time units after the downlink / uplink transition, such as OFDM symbols or OFDM time slots. Data transmitted by the terminal during these multiple time units cannot be received by the network device. Therefore, the terminal does not expect to transmit uplink channels and / or uplink signals during these multiple time units.

[0380] For example, the uplink channel may include one or more of PUSCH and PUCCH. The uplink signal may be SRS.

[0381] In some embodiments, the terminal does not expect to transmit uplink channels and / or uplink signals in the last plurality of time units within the first time window.

[0382] For example, in some cases, network devices may occupy the last few time units before the uplink / downlink transition, such as OFDM symbols or OFDM time slots. Data transmitted by the terminal during these multiple time units cannot be received by the network device. Therefore, the terminal does not expect to transmit uplink channels and / or uplink signals during these time units.

[0383] For example, the uplink channel may include one or more of PUSCH and PUCCH. The uplink signal may be SRS.

[0384] This disclosure improves data transmission efficiency by not expecting to transmit channels and / or signals in specific time units, thereby avoiding data transmission failures caused by uplink / downlink switching of network devices.

[0385] In the communication method provided in this embodiment, downlink channels and / or downlink signals are not scheduled to the terminal in the first time unit after the first time window and / or in the last time unit within the first time window.

[0386] In some embodiments, no downlink channel and / or downlink signal is transmitted to the terminal in the first time unit after the first time window.

[0387] For example, in some situations, network devices performing uplink / downlink switching may occupy the first time unit after the uplink / downlink switch, such as an OFDM symbol or OFDM time slot. During this time unit, the network device cannot transmit data. Therefore, the network device does not transmit downlink channels and / or downlink signals to the terminal during this time unit. In other words, the network device does not expect to transmit downlink channels and / or downlink signals.

[0388] For example, the downlink channel may include one or more of PDSCH and PDCCH. The downlink signal may be CSI-RS.

[0389] In some embodiments, no downlink channel and / or downlink signal is transmitted to the terminal in the last time unit within the first time window.

[0390] For example, in some cases, network devices performing uplink / downlink switching may occupy the last time unit before the downlink / uplink switching, such as an OFDM symbol or OFDM time slot. During this time unit, the network device cannot transmit data. Therefore, the network device does not transmit downlink channels and / or downlink signals to the terminal during this time unit. In other words, the network device does not expect to transmit downlink channels and / or downlink signals.

[0391] For example, the downlink channel may include one or more of PDSCH and PDCCH. The downlink signal may be CSI-RS.

[0392] In some embodiments, the terminal does not expect to receive downlink channels and / or downlink signals in multiple time units following the first time window.

[0393] For example, in some situations, network devices performing uplink / downlink switching may occupy multiple time units after the uplink / downlink switching, such as OFDM symbols or OFDM time slots. During these multiple time units, the network device cannot transmit data. Therefore, the terminal does not expect to receive downlink channels and / or downlink signals during these time units.

[0394] For example, the downlink channel may include one or more of PDSCH and PDCCH. The downlink signal may be CSI-RS.

[0395] In some embodiments, during the last plurality of time units within the first time window, the terminal does not expect to receive downlink channels and / or downlink signals.

[0396] For example, in some cases, network devices may occupy the last few time units before the downlink / uplink transition, such as OFDM symbols or OFDM time slots. During these multiple time units, the network device cannot transmit data. Therefore, the terminal does not expect to receive downlink channels and / or downlink signals during these time units.

[0397] For example, the downlink channel may include one or more of PDSCH and PDCCH. The downlink signal may be CSI-RS. This disclosure improves data transmission efficiency by not expecting to receive the channel and / or signal at specific time units, thereby avoiding data transmission failures caused by uplink / downlink handover of network devices.

[0398] In the communication method provided in this embodiment, the first time advance is less than or equal to 0.

[0399] In some embodiments, the first lead time may be less than or equal to 0.

[0400] For example, the first N TA，offset Less than 0. Or, the first N TA，offset It equals 0.

[0401] It is understandable that when the first N TA，offset Less than or equal to 0, such as Figure 6 As shown, the terminal serving the cell is based on the first N TA，offset The defined uplink time unit boundary can be the same as the reference time. This allows the network equipment in the serving cell to receive uplink data sent by terminals in its own cell, as well as reference signals sent by network equipment in neighboring cells, within the CP duration. This avoids ISI interference between uplink data sent by terminals in the serving cell and reference signals sent by network equipment in neighboring cells.

[0402] In some embodiments, considering that network devices may occupy a symbol before or after the uplink / downlink handover during uplink / downlink switching, causing the network device to be unable to transmit data on the occupied symbol, i.e., the symbol is unavailable to the network device. The terminal also needs to perform uplink / downlink switching, and when the terminal uses the first N... TA，offset During uplink / downlink handover, a symbol will be occupied before or after the handover. This prevents the terminal from transmitting data on the occupied symbol, meaning the symbol becomes unavailable to the terminal.

[0403] Therefore, in some embodiments, the symbols for when the terminal and network device are unavailable can be configured to be the same symbol. That is, a certain symbol used by the network device before and after the uplink / downlink handover is the same symbol used by the terminal before and after the uplink / downlink handover.

[0404] In some embodiments, a symbol before and after the uplink / downlink handover that the terminal expects to perform may be configured to be the same symbol before and after the uplink / downlink handover that the network device uses for the uplink / downlink handover.

[0405] Alternatively, in some embodiments, the terminal may be configured not to use a symbol before or after the uplink / downlink handover for uplink / downlink handover, which is a different symbol from the symbol before or after the uplink / downlink handover used by the network device for uplink / downlink handover.

[0406] This disclosure provides a relatively specific first time advance, enabling network devices to determine uplink time unit boundaries and receive uplink data using an appropriate time advance. This ensures that the serving cell network device receives uplink data sent by terminals in the same serving cell and reference signals for interference measurement sent by neighboring cell network devices within the CP duration, thereby effectively reducing interference between signals and improving data transmission efficiency and interference measurement accuracy.

[0407] In the communication method provided in this embodiment, the second timing advance is greater than or equal to 0.

[0408] In some embodiments, the second timing advance can be greater than or equal to 0.

[0409] For example, the second N TA，offset Greater than 0. Or, the second N TA，offset It equals 0.

[0410] It is understandable that when the second N TA，offset When it equals 0, the second N can be considered TA，offset Can be with the first N TA，offsetThe same applies. Therefore, only one timing advance needs to be configured, thereby reducing the resource consumption and signaling overhead caused by configuring multiple timing advances.

[0411] When the second N TA，offset When greater than 0, the second N TA，offset It can be compared with N in the TDD scenario of conventional solutions. TA，offset Same. In this case, such as Figure 7 As shown, the terminal is based on the second N TA，offset Determine the uplink time unit boundaries for sending uplink data. As... Figure 7 The starting position corresponding to the first uplink (UL) symbol in the middle. This starting position is... Figure 7 The position indicated by the uplink data transmission time. Figure 7 The N shown TA，offset Represented as based on N TA，offset The specific lead time is determined. Among them, N TA，offset equals N TA，offset T c T c This is a fundamental quantity of time. It can be seen that... Figure 7 The lined area shown represents the delay between the uplink and downlink time units when the terminal transmits uplink data. This delay can be based on a second N. TA，offset Determined. In some examples, assume the second N TA，offset In scenarios where network devices do not perform interference measurements, it is unnecessary to consider whether the network device can receive uplink data sent by the serving cell terminal and reference signals sent by neighboring cell network devices during the CP duration. In this case, the network device can utilize this time period for uplink / downlink handover, thus avoiding the need to occupy a symbol before or after the handover. This avoids the number of symbols occupied during uplink / downlink handover and improves uplink transmission performance.

[0412] This disclosure provides a more specific second timing advance, enabling network devices to use an appropriate timing advance to determine uplink time unit boundaries and receive uplink data. This can reduce the number of symbols required for uplink / downlink handover by network devices before and after the handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0413] The solutions involved in this disclosure will now be described with more specific examples.

[0414] In one implementation, taking interference measurement as an example (CLI measurement), it can be assumed that the terminal is a Rel-18 or later version terminal, and that the terminal supports DTDD features. Based on the network device configuration, the terminal performs the corresponding CLI measurement reporting at the corresponding time-frequency domain location.

[0415] Where, N TA，offset This is a cell-level parameter; N corresponds to all devices within the same serving cell. TA，offset The same. Therefore, this disclosure provides two Ns. TA，offset .

[0416] Two Ns can be defined. TA，offset The first N TA，offset Second N TA，offset Among them, the first N TA，offset For the time domain range used in CLI measurements of network devices, the second N TA，offset This applies outside the time domain range used for CLI measurements on network devices. In some examples, the second N... TA，offset It can be configured based on the signaling n-TimingAdvanceOffset.

[0417] If the signaling n-TimingAdvanceOffset is not configured, it can be determined based on Table 1.

[0418]

[0419] Table 1

[0420] For the first N TA，offset It can be determined based on the following method:

[0421] Method 1: The terminal receives RRC configuration signaling and determines the corresponding first N. TA，offset The first N TA，offset Based on cell-level RRC signaling configuration.

[0422] Method 2: The terminal determines the method based on a first predefined rule. For example, the first N... TA，offset Equal to 0, or, the first N TA，offset <0.

[0423] Method 3: The terminal receives RRC signaling and determines the first N. TA，offset If RRC signaling is not configured, the terminal determines the first N based on the first predefined rule of method 2. TA，offset The value of .

[0424] In some embodiments, the terminal may also determine the first N based on RRC signaling. TA，offset Second N TA，offset One of them, and based on the first predefined rule, determine the other N. TA，offset .

[0425] This disclosure introduces two Ns. TA，offset The terminal applies two N values ​​in different time domain ranges. TA，offsetOne of the advantages is that it helps to improve data transmission efficiency while ensuring the accuracy of CLI measurements on network devices.

[0426] In one implementation, the terminal determines the time-domain location where the network device performs CLI measurements between network devices, specifically by:

[0427] Method 1: The terminal receives configuration signaling, which can be RRC, MAC CE, and / or DCI. The time domain location of the CLI measurement is determined, specifically including: determining the measurement period, measurement time slot offset, and the symbol where the measurement is located.

[0428] Method 2: Considering that the terminal cannot transmit data at the time-frequency domain location where CLI measurements between network devices are performed, the time-frequency domain resources where the terminal cannot transmit data can be determined through RMR configuration to pinpoint these locations. The terminal determines the OFDM symbol location for the network device's CLI measurements based on the resources corresponding to the RMR and the CLI measurements between network devices.

[0429] Based on the OFDM symbol range measured by the network device CLI, the terminal can apply the first N on the OFDM symbol measured by the network device CLI. TA，offset ; and, when the terminal is outside the OFDM symbol range where the network device CLI measurement is located, the second N is applied. TA，offset .

[0430] For example, such as Figure 13 As shown, in the terminal application, the first N TA，offset and application of the second N TA，offset Between, to achieve different N TA，offset The alignment of the boundary corresponding to the UL OFDM symbol below, the terminal in the first N TA，offset The terminal does not expect to send PUSCH, PUCCH, and / or SRS (i.e., UL OFDM symbol) on the first adjacent UL OFDM symbol after the signal ends. Figure 13 The symbol corresponding to "X!" in the middle. Of course, in other examples, the alignment of the boundary corresponding to DL OFDMsymbol is similar, that is, the terminal does not expect the first N to be aligned. TA，offset After completion, PDCCH, PDSCH and / or CSI-RS (i.e., DL OFDM symbol) are received on the first adjacent DL OFDM symbol.

[0431] This disclosure identifies two Ns. TA，offset The corresponding application time domain range helps to improve data transmission efficiency while ensuring the accuracy of CLI measurements of network devices.

[0432] In some implementations, the terminal determines N based on existing mechanisms. TA，offset The network device receives the corresponding CLI RS signal on the CLI symbol and abandons uplink data reception for the corresponding serving cell.

[0433] The terminal determines the OFDM symbol where the network device CLI measurement is located, such as... Figure 14 As shown, when the network device CLI measures the OFDM symbol and the next adjacent OFDM symbol, the terminal does not expect to send PUSCH, PUCCH, and / or SRS (i.e., UL OFDM symbol) on that symbol. Figure 14 The symbol corresponding to "X!". Of course, in other examples, when the network device transmits CLI reference signals on a DL OFDM symbol, the terminal does not expect to receive PDCCH, PDSCH, and / or CSI-RS (i.e., DL OFDM symbol) on that symbol.

[0434] This disclosure takes into account the base station's implementation method for receiving the corresponding CLI RS. To reduce interference from the serving UE's UL data, the terminal does not expect to transmit data on the OFDM symbol where the CLI RS is located. This can effectively reduce the influence of standards and improve CLI measurement accuracy.

[0435] It should be noted that those skilled in the art will understand that the various implementation methods / embodiments described above in this disclosure can be used in conjunction with the foregoing embodiments, or they can be used independently. Whether used alone or in conjunction with the foregoing embodiments, the implementation principle is similar. In this disclosure, some embodiments are described as implementations used together. Of course, those skilled in the art will understand that such illustrative examples are not intended to limit the embodiments of this disclosure.

[0436] Based on the same concept, embodiments of this disclosure also provide a communication device or apparatus.

[0437] It is understood that the communication apparatus and devices provided in this disclosure, in order to achieve the above-mentioned functions, include hardware structures and / or software modules corresponding to the execution of each function. In conjunction with the units and algorithm steps of the various examples disclosed in this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware 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 the technical solutions of this disclosure.

[0438] Figure 15 This is a schematic diagram of a communication device according to an exemplary embodiment. (Refer to...) Figure 15 The device 200 is applied to a terminal and may include: a processing module 201 for determining at least two time advances; the processing module 201 is also used to determine uplink time unit boundaries based on the at least two time advances; and a sending module 202 for sending uplink data based on the uplink time unit boundaries.

[0439] This disclosure allows the terminal to configure multiple different timing advances, enabling it to determine uplink time unit boundaries and transmit uplink data using appropriate timing advances under different circumstances. This reduces the number of symbols required for uplink / downlink handover by network devices, thereby increasing the number of available symbols and improving uplink transmission performance.

[0440] In some embodiments, the apparatus 200 further includes: a receiving module 203 for receiving first configuration information; a processing module 201 for determining at least two timing advances based on the first configuration information; and a processing module 201 for determining at least two timing advances based on a first predefined rule.

[0441] This disclosure provides multiple methods for determining at least two timing advances, enabling terminals to use appropriate timing advances to determine uplink time unit boundaries and transmit uplink data under suitable circumstances. This can reduce the number of symbols required for uplink / downlink handover by network devices before and after the handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0442] In some implementations, at least two timing advances include a first timing advance; the processing module 201 is further configured to: determine a first time window, wherein the first time window is a time window for network devices to perform interference measurements, and / or the first time window is a time window for applying the first timing advance; and within the first time window, determine uplink time unit boundaries based on the first timing advance.

[0443] This disclosure determines the corresponding timing advance through a time window, enabling the terminal to use an appropriate timing advance to determine the uplink time unit boundary and send uplink data under appropriate circumstances. This can reduce the number of symbols occupied by network devices before and after uplink / downlink handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0444] In some implementations, at least two timing advances include a second timing advance; the processing module 201 is further configured to: determine a second time window, wherein the second time window does not overlap with the first time window in the time domain; and within the second time window, determine the uplink time unit boundary based on the second timing advance.

[0445] This disclosure determines the corresponding timing advance through a time window, enabling the terminal to use an appropriate timing advance to determine the uplink time unit boundary and send uplink data under appropriate circumstances. This can reduce the number of symbols occupied by network devices before and after uplink / downlink handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0446] In some embodiments, the apparatus 200 further includes: a receiving module 203 for receiving second configuration information; a processing module 201 for determining a first time window and / or a second time window based on the second configuration information; and a processing module 201 for determining the first time window and / or the second time window based on a second predefined rule.

[0447] This disclosure provides multiple methods for determining time windows, enabling terminals to use appropriate time advances to determine uplink time unit boundaries within the corresponding time window and transmit uplink data. This can reduce the number of symbols required for uplink / downlink handover by network devices before and after the handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0448] In some implementations, the terminal does not expect to transmit uplink channels and / or uplink signals in the first time unit after the first time window, and / or in the last time unit within the first time window.

[0449] This disclosure avoids data transmission failures due to uplink / downlink handover by not expecting to transmit channels and / or signals in specific time units. This reduces the number of symbols occupied before and after the uplink / downlink handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0450] In some implementations, the terminal does not expect to receive downlink channels and / or downlink signals in the first time unit after the first time window, and / or in the last time unit within the first time window.

[0451] This disclosure avoids data transmission failures caused by uplink / downlink handover by not expecting to receive channels and / or signals at specific time units. This reduces the number of symbols occupied before and after the uplink / downlink handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0452] In some implementations, the lead time is less than or equal to 0.

[0453] This disclosure provides a relatively specific first time advance, enabling the terminal to use an appropriate time advance to determine the uplink time unit boundary and transmit uplink data. This ensures that the serving cell network equipment receives uplink data transmitted by terminals in the same serving cell and reference signals for interference measurement transmitted by neighboring cell network equipment within the CP duration, thereby effectively reducing interference between signals and improving data transmission efficiency and interference measurement accuracy.

[0454] In some implementations, the second timing advance is greater than or equal to 0.

[0455] This disclosure provides a more specific second timing advance, enabling the terminal to use an appropriate timing advance to determine the uplink time unit boundaries and transmit uplink data. This can reduce the number of symbols required for uplink / downlink handover by network devices before and after the handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0456] Figure 16 This is a schematic diagram of another communication device according to an exemplary embodiment. (Refer to...) Figure 16 The device 300 is applied to a network device and may include: a processing module 301 for determining at least two timing advances; the processing module 301 is further configured to determine uplink time unit boundaries based on the at least two timing advances; and a receiving module 302 for receiving uplink data and a reference signal based on the uplink time unit boundaries, wherein the reference signal is used for interference detection.

[0457] This disclosure allows network devices to use multiple different timing advances to determine uplink time unit boundaries and receive uplink data under appropriate circumstances by configuring the terminal with multiple different timing advances. This reduces the number of symbols required for uplink / downlink handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0458] In some embodiments, the apparatus 300 further includes: a processing module 301 further configured to determine first configuration information, the first configuration information being used to indicate at least two timing advances; a sending module 303 further configured to send the first configuration information; and / or, the processing module 301 further configured to determine at least two timing advances based on a first predefined rule.

[0459] This disclosure provides multiple methods for determining at least two timing advances, enabling network devices to use appropriate timing advances to determine uplink time unit boundaries and receive uplink data under suitable circumstances. This can reduce the number of symbols required for uplink / downlink handover by network devices before and after the handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0460] In some implementations, at least two timing advances include a first timing advance; the processing module 301 is further configured to: determine a first time window, wherein the first time window is a time window for the network device to perform interference measurement, and / or the first time window is a time window for applying the first timing advance; within the first time window, determine the uplink time unit boundary based on the first timing advance.

[0461] This disclosure determines the corresponding timing advance through a time window, enabling network devices to use an appropriate timing advance to determine the uplink time unit boundary and receive uplink data under different circumstances. This reduces the number of symbols required for uplink / downlink handover by network devices before and after the handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0462] In some implementations, at least two timing advances include a second timing advance; the processing module 301 is further configured to: determine a second time window, wherein the second time window does not overlap with the first time window in the time domain; and within the second time window, determine the uplink time unit boundary based on the second timing advance.

[0463] This disclosure determines the corresponding timing advance through a time window, enabling network devices to use an appropriate timing advance to determine the uplink time unit boundary and receive uplink data under different circumstances. This reduces the number of symbols required for uplink / downlink handover by network devices before and after the handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0464] In some embodiments, the device 300 further includes: a processing module 301 further configured to determine second configuration information, the second configuration information being used to indicate a first time window and / or a second time window; a sending module 303 configured to send the second configuration information; and / or, the processing module 301 further configured to determine the first time window and / or the second time window based on a second predefined rule.

[0465] This disclosure provides multiple methods for determining time windows, enabling network devices to use appropriate time advances to determine uplink time unit boundaries within the corresponding time window and receive uplink data. This can reduce the number of symbols required for uplink / downlink handover by network devices before and after the handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0466] In some implementations, the terminal's uplink channel and / or uplink signal are not received in the first time unit after the first time window, and / or in the last time unit within the first time window.

[0467] This disclosure avoids data transmission failures due to uplink / downlink handover by not expecting to transmit channels and / or signals in specific time units. This reduces the number of symbols occupied before and after the uplink / downlink handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0468] In some implementations, no downlink channel and / or downlink signal is transmitted to the terminal in the first time unit after the first time window, and / or in the last time unit within the first time window.

[0469] This disclosure avoids data transmission failures caused by uplink / downlink handover by not expecting to receive channels and / or signals at specific time units. This reduces the number of symbols occupied before and after the uplink / downlink handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0470] In some implementations, the lead time is less than or equal to 0.

[0471] This disclosure provides a relatively specific first time advance, enabling network devices to use an appropriate time advance to determine uplink time unit boundaries and receive uplink data. This ensures that the serving cell network device receives uplink data sent by terminals in the same serving cell and reference signals sent by neighboring cell network devices for interference measurement within the CP duration, thereby effectively reducing interference between signals and improving data transmission efficiency and interference measurement accuracy.

[0472] In some implementations, the second timing advance is greater than or equal to 0.

[0473] This disclosure provides a more specific second timing advance, enabling network devices to use an appropriate timing advance to determine uplink time unit boundaries and receive uplink data. This can reduce the number of symbols required for uplink / downlink handover by network devices before and after the handover, thereby increasing the number of available symbols and improving uplink transmission performance.

[0474] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0475] Figure 17 This is a schematic diagram illustrating a communication device according to an exemplary embodiment. For example, device 400 can be any terminal such as a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0476] Reference Figure 17The device 400 may include one or more of the following components: processing component 402, memory 404, power component 406, multimedia component 408, audio component 410, input / output (I / O) interface 412, sensor component 414, and communication component 416.

[0477] Processing component 402 typically controls the overall operation of device 400, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 402 may include one or more processors 420 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 402 may include one or more modules to facilitate interaction between processing component 402 and other components. For example, processing component 402 may include a multimedia module to facilitate interaction between multimedia component 408 and processing component 402.

[0478] Memory 404 is configured to store various types of data to support the operation of device 400. Examples of this data include instructions for any application or method operating on device 400, contact data, phonebook data, messages, pictures, videos, etc. Memory 404 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0479] The power supply component 406 provides power to the various components of the device 400. The power supply component 406 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to the device 400.

[0480] Multimedia component 408 includes a screen that provides an output interface between the device 400 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 408 includes a front-facing camera and / or a rear-facing camera. When the device 400 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0481] Audio component 410 is configured to output and / or input audio signals. For example, audio component 410 includes a microphone (MIC) configured to receive external audio signals when device 400 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 404 or transmitted via communication component 416. In some embodiments, audio component 410 also includes a speaker for outputting audio signals.

[0482] I / O interface 412 provides an interface between processing component 402 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0483] Sensor assembly 414 includes one or more sensors for providing status assessments of various aspects of device 400. For example, sensor assembly 414 may detect the on / off state of device 400, the relative positioning of components such as the display and keypad of device 400, changes in the position of device 400 or a component of device 400, the presence or absence of user contact with device 400, the orientation or acceleration / deceleration of device 400, and temperature changes of device 400. Sensor assembly 414 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 414 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 414 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0484] Communication component 416 is configured to facilitate wired or wireless communication between device 400 and other devices. Device 400 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 416 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 416 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0485] In an exemplary embodiment, device 400 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0486] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 404 including instructions, which can be executed by a processor 420 of device 400 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0487] Figure 18 This is a schematic diagram of another communication device according to an exemplary embodiment. For example, device 500 may be provided as a base station or a server. (See also...) Figure 18 The device 500 includes a processing component 522, which further includes one or more processors, and memory resources represented by memory 532 for storing instructions executable by the processing component 522, such as application programs. The application programs stored in memory 532 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 522 is configured to execute instructions to perform the methods described above.

[0488] Device 500 may also include a power supply component 526 configured to perform power management of device 500, a wired or wireless network interface 550 configured to connect device 500 to a network, and an input / output (I / O) interface 558. Device 500 can operate on an operating system stored in memory 532, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or similar.

[0489] This disclosure describes the configuration of two Ns. TA，offset And design rules to determine two N TA，offset The application time domain range, and the corresponding N is used in different time domain ranges. TA，offset Send uplink data. This allows for maximizing uplink transmission performance while maintaining CLI measurement accuracy.

[0490] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0491] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0492] It is further understood that the meaning of words such as “responding to” and “if” used in this disclosure depends on the context and the actual usage scenario. For example, the word “responding to” as used herein can be interpreted as “when” or “if” or “if”.

[0493] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0494] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein.

[0495] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A communication method, characterized in that, The method is executed by a terminal and includes: Determine at least two time lead times; The uplink time unit boundary is determined based on the at least two time advances. The uplink time unit boundary is determined by using one of the at least two time advances based on the current time domain range of the terminal. The current time domain range of the terminal is related to the corresponding application scenario. The application scenario includes a first scenario and a second scenario different from the first scenario. The first scenario is a scenario in which the network device performs interference measurement, and the second scenario is a scenario in which the network device does not perform interference measurement. Uplink data is sent based on the uplink time unit boundary.

2. The method according to claim 1, characterized in that, The at least two time advances are determined using at least one of the following methods: Receive first configuration information, and determine the at least two timing advances based on the first configuration information; Based on the first predefined rule, the at least two time advance amounts are determined.

3. The method according to claim 1, characterized in that, The at least two time advances include: a first time advance; the method further includes: A first time window is determined, wherein the first time window is the time window for the network device to perform interference measurement, and / or the first time window is the time window for applying the first time advance. Determining the uplink time unit boundary based on the at least two time advances includes: Within the first time window, the boundary of the uplink time unit is determined based on the first time advance.

4. The method according to claim 3, characterized in that, The at least two time advances include: a second time advance; the method further includes: A second time window is determined, wherein the second time window does not overlap with the first time window in the time domain; Determining the uplink time unit boundary based on the at least two time advances includes: Within the second time window, the boundaries of the uplink time units are determined based on the second time advance.

5. The method according to claim 3 or 4, characterized in that, The first time window and / or the second time window are determined by at least one of the following methods: Receive second configuration information, determine the first time window and / or the second time window based on the second configuration information; The first time window and / or the second time window are determined based on the second predefined rule.

6. The method according to any one of claims 3-5, characterized in that, In the first time unit after the first time window, and / or in the last time unit within the first time window, the terminal does not expect to transmit uplink channels and / or uplink signals.

7. The method according to any one of claims 3-5, characterized in that, In the first time unit after the first time window, and / or in the last time unit within the first time window, the terminal does not expect to receive downlink channels and / or downlink signals.

8. The method according to any one of claims 3-7, characterized in that, The first time advance is less than or equal to 0.

9. The method according to claim 4, characterized in that, The second time advance is greater than or equal to 0.

10. A communication method, characterized in that, The method is executed by a network device and includes: Determine at least two time lead times; The uplink time unit boundary is determined based on the at least two time advances. The uplink time unit boundary is determined by using one of the at least two time advances based on the current time domain range of the terminal. The current time domain range of the terminal is related to the corresponding application scenario. The application scenario includes a first scenario and a second scenario different from the first scenario. The first scenario is a scenario in which the network device performs interference measurement, and the second scenario is a scenario in which the network device does not perform interference measurement. Uplink data is received based on the uplink time unit boundary.

11. The method according to claim 10, characterized in that, The determination of at least two time advances includes: Determine first configuration information, which indicates the at least two timing advances; send the first configuration information; and / or, Based on the first predefined rule, the at least two time advance amounts are determined.

12. The method according to claim 10, characterized in that, The at least two time advances include: a first time advance; the method further includes: A first time window is determined, wherein the first time window is the time window for the network device to perform interference measurement, and / or the first time window is the time window for applying the first time advance. Determining the uplink time unit boundary based on the at least two time advances includes: Within the first time window, the boundary of the uplink time unit is determined based on the first time advance.

13. The method according to claim 12, characterized in that, The at least two time advances include: a second time advance; the method further includes: A second time window is determined, wherein the second time window does not overlap with the first time window in the time domain; Determining the uplink time unit boundary based on the at least two time advances includes: Within the second time window, the boundaries of the uplink time units are determined based on the second time advance.

14. The method according to claim 12 or 13, characterized in that, The first time window and / or the second time window are determined in the following ways: Determine second configuration information, which is used to indicate the first time window and / or the second time window; send the second configuration information; and / or, The first time window and / or the second time window are determined based on the second predefined rule.

15. The method according to any one of claims 12-14, characterized in that, In the first time unit after the first time window, and / or in the last time unit within the first time window, no uplink channel and / or uplink signal from the terminal is received.

16. The method according to any one of claims 12-14, characterized in that, In the first time unit after the first time window, and / or in the last time unit within the first time window, no downlink channel and / or downlink signal is transmitted to the terminal.

17. The method according to any one of claims 12-16, characterized in that, The first time advance is less than or equal to 0.

18. The method according to claim 13, characterized in that, The second time advance is greater than or equal to 0.

19. A communication device, characterized in that, The device includes: The processing module is used to determine at least two time advances; The processing module is further configured to determine the uplink time unit boundary based on the at least two time advances, wherein the uplink time unit boundary is determined by using one of the at least two time advances based on the current time domain range of the terminal. The current time domain range of the terminal is related to the corresponding application scenario. The application scenario includes a first scenario and a second scenario different from the first scenario. The first scenario is a scenario in which the network device performs interference measurement, and the second scenario is a scenario in which the network device does not perform interference measurement. The sending module is used to send uplink data based on the uplink time unit boundary.

20. A communication device, characterized in that, include: The processing module is used to determine at least two time advances; The processing module is further configured to determine the uplink time unit boundary based on the at least two time advances, wherein the uplink time unit boundary is determined by using one of the at least two time advances based on the current time domain range of the terminal. The current time domain range of the terminal is related to the corresponding application scenario. The application scenario includes a first scenario and a second scenario different from the first scenario. The first scenario is a scenario in which the network device performs interference measurement, and the second scenario is a scenario in which the network device does not perform interference measurement. The receiving module is used to receive uplink data and a reference signal based on the uplink time unit boundary, wherein the reference signal is used for interference detection.

21. A communication device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the method described in any one of claims 1 to 9.

22. An interference measuring device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the method according to any one of claims 10 to 18.

23. A non-transitory computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor of the terminal, the terminal is able to perform the method according to any one of claims 1 to 9.

24. A non-transitory computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor of the network device, the network device is able to perform the method according to any one of claims 10 to 18.

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