Time domain window determination method, communication node, and storage medium

Abstract

Disclosed in the present application are a time domain window determination method, a communication node, and a storage medium. The method comprises: sending first information to a second communication node; and determining a time domain window (TDW) for demodulation reference signal (DMRS) bundling.

Description

A method for determining a time domain window, a communication node, and a storage medium Technical Field

[0001] The present application relates to the field of communication technology, for example, to a method for determining a time domain window, a communication node, and a storage medium. Background Art

[0002] Currently, non-terrestrial networks (NTNs) are supported in the 3rd Generation Partnership Project (3GPP) protocols. To mitigate the performance loss caused by the large distance between terminal devices and satellites, 3GPP Release 18 (R18) discussed coverage enhancement for NTNs. Traditional terrestrial network (TN)-based demodulation reference signal (DMRS) bundling can be applied to NTNs and adapted when needed. However, the phase difference between time slots within the same DMRS-bundled time domain window (TDW) is limited to a specific threshold. Applying traditional DMRS bundling methods to NTNs may result in phase discontinuities (e.g., timing advance (TA) pre-compensation updates). Therefore, determining the TDW for DMRS bundling in NTNs has become a pressing issue.

[0003] Summary of the Invention

[0004] This embodiment of the present application provides a method for determining a time domain window, which is applied to a first communication node and includes:

[0005] sending first information to the second communication node;

[0006] Determine a time domain window TDW for demodulation reference signal DMRS bundling.

[0007] An embodiment of the present application provides a method for determining a time domain window, which is applied to a second communication node and includes:

[0008] receiving first information sent by a first communication node;

[0009] Determine the length of the time domain window TDW to which the demodulation reference signal DMRS is bound;

[0010] The length of the TDW is sent to the first communication node.

[0011] An embodiment of the present application provides a communication node, comprising: a processor; the processor is configured to implement the method of any of the above embodiments when executing a computer program.

[0012] An embodiment of the present application further provides a computer-readable storage medium storing a computer program, which implements the method of any of the above embodiments when the computer program is executed by a processor.

[0013] With respect to the above embodiments and other aspects of the present application and their implementation, further description is provided in the accompanying drawings, detailed description and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG1 is a schematic diagram of a network of an NTN communication system provided by an embodiment;

[0015] FIG2 is a schematic flow chart of a method for determining a time domain window provided by an embodiment;

[0016] FIG3 is a flow chart of another method for determining a time domain window provided by an embodiment;

[0017] FIG4 is a flow chart of another method for determining a time domain window provided by an embodiment;

[0018] FIG5 is a flow chart of another method for determining a time domain window provided by an embodiment;

[0019] FIG6 is a schematic structural diagram of a device for determining a time domain window provided by an embodiment;

[0020] FIG7 is a schematic structural diagram of another device for determining a time domain window provided by an embodiment;

[0021] FIG8 is a schematic structural diagram of a base station provided by an embodiment;

[0022] FIG9 is a schematic structural diagram of a UE provided by an embodiment. DETAILED DESCRIPTION

[0023] It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0024] The time-domain window determination method provided in this application can be applied to an NTN communication system. Figure 1 is a networking diagram of an NTN communication system provided by one embodiment. As shown in Figure 1, in the NTN communication system, the link between a terminal device (such as user equipment (UE)) and a satellite is a service link, and the link between an access network device (such as a base station) and a satellite is a feeder link. Both are common to all UEs in the same cell (such as UE1 and UEx shown in Figure 1).

[0025] A terminal device can be a device with wireless transceiver capabilities, which can be deployed on land (such as indoors or outdoors, handheld, wearable or vehicle-mounted, etc.); it can also be deployed on the water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.). Examples of some terminal devices include: UE, mobile phone, mobile station, tablet computer, notebook computer, ultra-mobile personal computer (UMPC), handheld computer, netbook, personal digital assistant (PDA) and other user equipment that can be connected to the Internet, or virtual reality (VR) terminal, augmented reality (AR) terminal, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc., or Internet of Things node in the Internet of Things, or vehicle-mounted communication device in the Internet of Vehicles, or entertainment, gaming equipment or system, or global positioning system equipment, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device. In addition, the terminal device can be referred to as the terminal.

[0026] The access network device is an access device that the terminal device uses to access the wireless communication system wirelessly. It can be a base station, an evolved NodeB (eNB or eNodeB) in Long Term Evolution Advanced (LTEA), a transmission reception point (TRP), a base station in a 5G mobile communication system or the next generation Node B (gNB), a base station in a future mobile communication system, or an access node in a Wireless Fidelity (WiFi) system. The base station may include various macro base stations, micro base stations, home base stations, wireless remote stations, routers, WIFI devices, or various network-side devices such as primary cells and secondary cells, and location management function (LMF) devices. It can also be a module or unit that completes part of the functions of the base station, for example, it can be a centralized unit (CU) or a distributed unit (DU). The embodiments of the present application do not limit the specific technology and specific device form adopted by the access network device. In addition, the access network device can be referred to as a base station.

[0027] In traditional TN communication systems, joint channel estimation (JCE) has been used for New Radio (NR) coverage enhancement. For JCE, reference signals (RS) at different time instances can be used jointly to estimate the channel to obtain better channel estimation results and expect better decoding performance. Since the jointly estimated RS should be coherent, 3GPP specifies a method for determining TDW to perform DMRS bundling within the TDW for further channel estimation. For example, the UE reports capability information associated with the maximum duration to the base station, within which the UE can maintain phase continuity and power consistency between time slots to support DMRS bundling; the base station can configure the length of the TDW so that the UE determines the nominal TDW based on the length of the TDW, and determines the actual TDW based on events that cause the phase continuity and / or power consistency between time slots to be unable to be maintained within the nominal TDW, and the UE maintains / should maintain phase continuity and power consistency within the actual TDW.

[0028] The current standard specifies the following events for determining actual TDW:

[0029] Downlink timeslot or downlink reception or downlink monitoring based on unpaired spectrum tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated;

[0030] The interval between any two consecutive Physical Uplink Shared Channel (PUSCH) transmissions, or the interval between any two adjacent Physical Uplink Control Channel (PUCCH) transmissions, exceeds 13 symbols for a normal cyclic prefix or 11 symbols for an extended cyclic prefix;

[0031] The interval between any two consecutive PUSCH transmissions, or the interval between any two adjacent PUCCH transmissions, does not exceed 13 symbols, but other uplink transmissions are scheduled between two consecutive PUSCH transmissions or two consecutive PUCCH transmissions;

[0032] For PUSCH transmissions of repetition type A, or PUSCH transmissions of repetition type B, or transport block (TB) processing over multiple time slots, drop or cancel the PUSCH transmissions according to clauses 9, 11.1, and 11.2A of [6, TS 38.213];

[0033] For repeated PUCCH transmissions, discard or cancel the PUSCH transmission according to clauses 9, 9.2.6 and 11.1 of [6, TS 38.213];

[0034] For any two consecutive PUSCH transmissions of repetition type A or repetition type B, when two Sounding Reference Signal (SRS) resource sets are configured in srs-ResourceSetToAddModList or srs-ResourceSetToAddModList DCI-0-2, and the higher layer parameter usage in the SRS resource set is set to "codebook" or "non-codebook", different SRS resource sets are associated with the two PUSCH transmissions of repetition type A or repetition type B in accordance with clause 6.1.2.1;

[0035] For any two consecutive PUCCH transmissions that are repeated, when the repeated PUCCH resources used by the UE for the PUCCH transmission include a first spatial relationship and a second spatial relationship or a first set and a second set of power control parameters, as described in [10, TS 38.321] and clause 7.2.1 of [6, TS 38.113], different spatial relationships or different power control parameters are used for the two repeated PUCCH transmissions in accordance with clause 9.2.6 of [6, TS 38.213];

[0036] Uplink timing adjustment in response to a timing advance command as specified in clause 4.2 of [6, TS 38.213];

[0037] FM;

[0038] For reduced capability half-duplex UEs, the PUSCH or PUCCH transmission is dropped or cancelled as specified in clause 17.2 of [6, TS 38.213]; or, for reduced capability half-duplex UEs, the gap between two consecutive PUSCH or two consecutive PUCCH transmissions overlaps with any symbol of downlink reception or downlink monitoring.

[0039] In addition, 38.101-1 defines the phase difference limit for DMRS bundling:

[0040] Table 1 Maximum allowed phase difference of bonding

[0041] In an embodiment of the present application, a method for determining a time domain window, a communication node, and a storage medium that can be operated in the above-mentioned NTN communication system are provided, which can avoid various factors that may cause phase discontinuity in the NTN and determine the TDW of DMRS binding.

[0042] The following describes a method for determining a time domain window, a communication node, and its technical effects.

[0043] Figure 2 is a schematic flow diagram of a method for determining a time domain window according to one embodiment. As shown in Figure 2 , the method provided in this embodiment is applicable to a first communication node (also referred to as a first communication node device, or a first node, or a first device), such as a UE. The method includes the following steps.

[0044] S110. Send first information to the second communication node.

[0045] In one embodiment, considering the enhancement of NR coverage performance on NTN, the traditional TN-based DMRS bundling method can be adaptively applied in NTN. 3GPP Release 17 (R17) specifies the capability information of DMRS bundling, which indicates the maximum duration supported by the UE, during which the UE can maintain power consistency and phase continuity to support DMRS bundling for PUSCH / PUCCH. However, in NTN, there may be factors that cause phase discontinuity and / or power inconsistency, thereby affecting DMRS bundling. Therefore, the present application defines additional information (i.e., first information) for DMRS bundling and causes the first communication node to send the first information to the second communication node.

[0046] In one embodiment, the first information includes at least one of the following information 1-6:

[0047] Information 1: capability information associated with a maximum duration of demodulation reference signal (DMRS) bundling in a non-terrestrial network (NTN) supported by the first communication node.

[0048] For information 1, the maximum duration of DMRS bundling in the NTN supported by the first communication node can be determined based on all potential factors that may affect DMRS bundling in the NTN, including at least one of the following information: phase precompensation capability information; timing of TA precompensation update; period of TA precompensation update; timing of antenna switching; period of antenna switching.

[0049] Information 2: first indication information, the first indication information is used to indicate whether the timing advance TA pre-compensation update is allowed within the actual TDW.

[0050] In one embodiment, information 2 may generally be used in combination with information 4 or information 5 or information 6.

[0051] Information 3: second indication information, the second indication information is used to indicate whether the first communication node can maintain phase continuity and / or power consistency between time slots when the TA pre-compensation is updated.

[0052] In one embodiment, information 3 may also be generally used in combination with information 4 or information 5 or information 6.

[0053] Information 4: capability information associated with the maximum duration of DMRS bundling in the terrestrial network TN supported by the first communication node.

[0054] Information 5: Capability information associated with the maximum duration of DMRS bundling supported by the first communication node when TA pre-compensation update and / or antenna switching is not considered.

[0055] Information 6: capability information associated with the maximum duration of DMRS bundling supported by the first communication node without taking into account an event determined by the first communication node that causes phase continuity and / or power consistency between time slots to be unable to be maintained.

[0056] S120: Determine a time domain window TDW for demodulation reference signal DMRS binding.

[0057] In one embodiment, the DMRS-bundled TDW includes at least one of a nominal TDW and an actual TDW.

[0058] When the TDW includes the nominal TDW, the method of “determining the nominal TDW for DMRS bundling” in step S120 may include any of the following two methods:

[0059] Method 1: Determine the nominal TDW according to the first information and / or the duration of uplink repeated transmission.

[0060] Method 2: Receive the length of the TDW sent by the second communication node, and determine the nominal TDW according to the length of the TDW.

[0061] The difference between the above two methods is that: Method 1 is that the first communication node determines the nominal TDW by itself, that is, the first communication node can additionally consider the additional information of DMRS binding and / or the duration of uplink repeated transmission when determining the nominal TDW; while Method 2 is that the second communication node determines the length of TDW and sends it to the first communication node, so that the first communication node determines the nominal TDW based on the length of TDW.

[0062] Based on the above embodiment, Fig. 3 is a flow chart of another method for determining a time domain window provided by an embodiment. As shown in Fig. 3 , before step S120 is executed, step S130 is also included.

[0063] S130. Send second information to the second communication node, where the second information is used to indicate a timing of an event that causes phase continuity and / or power consistency between time slots to be unable to be maintained.

[0064] Since the event that causes the phase continuity and / or power consistency between time slots to be unable to be maintained may be determined by the UE, when the phase continuity and / or power consistency between time slots cannot be maintained, the first communication node is required to report the timing of the occurrence of the corresponding event to the second communication node, so that the first communication node and the second communication node reach a consensus on the determination of the DMRS-bound TDW.

[0065] In one embodiment, the event that causes the phase continuity and / or power consistency between time slots to fail to be maintained includes at least one of the following:

[0066] TA pre-compensation update;

[0067] Antenna switching;

[0068] The phases between the time slots are discontinuous or the phase difference is greater than or equal to a first threshold;

[0069] The powers between the time slots are inconsistent or the power difference is greater than or equal to the second threshold.

[0070] Specifically, the values ​​of the first threshold and the second threshold can be set according to actual needs, and this application does not impose any specific restrictions on this.

[0071] In one embodiment, the second information is implemented in at least one of the following forms:

[0072] At least one timestamp; the timestamp may indicate the time when the aforementioned event occurred. Specifically, the timestamp may be reported based on the start / end of a DL / UL timeslot / subframe / frame, using at least one of a Hyper System Frame Number (H-SFN), a System Frame Number (SFN), a subframe number, or a timeslot number; or the timestamp may be reported using an absolute time.

[0073] Periodicity and / or start time: Periodic timing may indicate when the above event occurs at the first communication node. Specifically, the start time may be indicated by a start offset or a timestamp; the start offset may be counted from the start of the repeated transmission or from the end of the report signaling.

[0074] At least one time interval or duration. The event will not occur within the specified time interval / length. If only one time interval / length is reported, the event is considered to occur periodically. If more than one time interval / length is indicated, the event may occur sequentially based on the reported time intervals.

[0075] Based on the second information, the first communication node and the second communication node can reach a consensus on when an event occurs that causes phase continuity and / or power consistency between time slots to be lost, thereby destroying DMRS binding. Subsequently, the actual TDW can be determined based on the timing of the reported information.

[0076] In one embodiment, if the first communication node sends the second information to the second communication node, then the length of the TDW mentioned in the above step S120 can be determined by the second communication node based on at least one of the first information and the second information; or, the actual TDW is determined by the first communication node based on the second information and the nominal TDW.

[0077] Since DMRS bundling is applied to repeated transmissions of the same PUSCH / PUCCH, it is unlikely that another TB / resource will be inserted for timing reporting during DMRS bundling. Therefore, the first communication node can check whether and when the above event will occur before PUSCH / PUCCH transmission, and the second information needs to be executed in advance.

[0078] Specifically, the method of “sending the second information to the second communication node” in step S130 may include:

[0079] Before DMRS binding, send second information to the second communication node through any one of TB, PUCCH, PUSCH, and medium access control control element (MAC CE);

[0080] And / or, sending the second information to the second communication node via radio resource control (RRC) signaling, and the second information will be applied to PUSCH / PUCCH transmission.

[0081] In one embodiment, the timing of updating the TA pre-compensation may also be configured by the second communication node to the first communication node.

[0082] FIG4 is a flow chart illustrating another method for determining a time domain window according to an embodiment. As shown in FIG4 , the method provided in this embodiment is applicable to a second communication node (also referred to as a second communication node device, a second node, or a second device), such as a base station. The method includes the following steps.

[0083] S210. Receive first information sent by a first communication node.

[0084] In one embodiment, considering the enhancement of NR coverage performance on NTN, the traditional TN-based DMRS bundling method can be adaptively applied in NTN. 3GPP Release 17 (R17) specifies the capability information of DMRS bundling, which indicates the maximum duration supported by the UE, during which the UE can maintain power consistency and phase continuity to support DMRS bundling for PUSCH / PUCCH. However, in NTN, there may be factors that cause phase discontinuity and / or power inconsistency, thereby affecting DMRS bundling. Therefore, the present application defines additional information (i.e., first information) for DMRS bundling, and enables the second communication node to receive the first information sent by the first communication node.

[0085] In one embodiment, the first information includes at least one of the following information 1-6:

[0086] Information 1: capability information associated with a maximum duration of demodulation reference signal (DMRS) bundling in a non-terrestrial network (NTN) supported by the first communication node.

[0087] For information 1, the maximum duration of DMRS bundling in the NTN supported by the first communication node can be determined based on all potential factors that may affect DMRS bundling in the NTN, including at least one of the following information: phase precompensation capability information; timing of TA precompensation update; period of TA precompensation update; timing of antenna switching; period of antenna switching.

[0088] Information 2: first indication information, the first indication information is used to indicate whether the timing advance TA pre-compensation update is allowed within the actual TDW.

[0089] In one embodiment, information 2 may generally be used in combination with information 4 or information 5 or information 6.

[0090] Information 3: second indication information, the second indication information is used to indicate whether the first communication node can maintain phase continuity and / or power consistency between time slots when the TA pre-compensation is updated.

[0091] In one embodiment, information 3 may also be generally used in combination with information 4 or information 5 or information 6.

[0092] Information 4: capability information associated with the maximum duration of DMRS bundling in the terrestrial network TN supported by the first communication node.

[0093] Information 5: Capability information associated with the maximum duration of DMRS bundling supported by the first communication node when TA pre-compensation update and / or antenna switching is not considered.

[0094] Information 6: capability information associated with the maximum duration of DMRS bundling supported by the first communication node without taking into account an event determined by the first communication node that causes phase continuity and / or power consistency between time slots to be unable to be maintained.

[0095] S220: Determine the length of the time domain window TDW to which the demodulation reference signal DMRS is bundled.

[0096] S230: Send the length of TDW to the first communication node.

[0097] Based on the above embodiment, Fig. 5 is a flow chart of another method for determining a time domain window provided by an embodiment. As shown in Fig. 5 , before step S220 is executed, step S240 is also included.

[0098] S240. Receive second information sent by the first communication node, where the second information is used to indicate a timing of an event that causes phase continuity and / or power consistency between time slots to be unable to be maintained.

[0099] Since the event that causes the phase continuity and / or power consistency between time slots to be unable to be maintained may be determined by the UE, when the phase continuity and / or power consistency between time slots cannot be maintained, the first communication node is required to report the timing of the occurrence of the corresponding event to the second communication node, so that the first communication node and the second communication node reach a consensus on the determination of the DMRS-bound TDW.

[0100] In one embodiment, the event that causes the phase continuity and / or power consistency between time slots to fail to be maintained includes at least one of the following:

[0101] TA pre-compensation update;

[0102] Antenna switching;

[0103] The phases between the time slots are discontinuous or the phase difference is greater than or equal to a first threshold;

[0104] The powers between the time slots are inconsistent or the power difference is greater than or equal to the second threshold.

[0105] Specifically, the values ​​of the first threshold and the second threshold can be set according to actual needs, and this application does not impose any specific restrictions on this.

[0106] In one embodiment, the second information is implemented in at least one of the following forms:

[0107] At least one timestamp; the timestamp may indicate the time when the aforementioned event occurred. Specifically, the timestamp may be reported based on the start / end of a DL / UL timeslot / subframe / frame, using at least one of a Hyper System Frame Number (H-SFN), a System Frame Number (SFN), a subframe number, or a timeslot number; or the timestamp may be reported using an absolute time.

[0108] Periodicity and / or start time: Periodic timing may indicate when the above event occurs at the first communication node. Specifically, the start time may be indicated by a start offset or a timestamp; the start offset may be counted from the start of the repeated transmission or from the end of the report signaling.

[0109] At least one time interval or duration. The event will not occur within the specified time interval / length. If only one time interval / length is reported, the event is considered to occur periodically. If more than one time interval / length is indicated, the event may occur sequentially based on the reported time intervals.

[0110] Based on the second information, the first communication node and the second communication node may reach a consensus on when an event occurs that causes phase continuity and / or power consistency between time slots to fail to be maintained, thereby destroying DMRS bundling.

[0111] In one embodiment, if the second communication node receives the second information sent by the first communication node, the step of determining the length of the DMRS-bound TDW in step S230 may be: determining the length of the TDW according to at least one of the first information and the second information.

[0112] In one embodiment, the method of "receiving the second information sent by the first communication node" in step S240 may include: receiving the second information sent by the first communication node through any one of TB, PUCCH, PUSCH, MAC CE; and / or, receiving the second information sent by the first communication node through RRC signaling.

[0113] In one embodiment, the timing of updating the TA pre-compensation may also be configured by the second communication node to the first communication node.

[0114] Below, some examples are provided to illustrate the method for determining the time domain window provided in the present application. In the following examples, the first communication node is a UE and the second communication node is a base station.

[0115] Example 1

[0116] In Example 1, the UE sends first information to the base station (the first information includes: capability information associated with the maximum duration of demodulation reference signal DMRS bundling in the non-terrestrial network NTN supported by the first communication node, and the maximum duration of DMRS bundling in the NTN supported by the first communication node is determined based on all potential factors that may affect DMRS bundling in the NTN). The base station sends the length of TDW to the UE. The length of TDW can be determined by the base station based on the first information. The UE can determine the nominal TDW based on the length of TDW. Alternatively, the UE can determine the nominal TDW based on the first information and / or the duration of uplink repeated transmission. The UE can determine the actual TDW based on the nominal TDW and events that cause phase continuity and / or power consistency between time slots to be unable to be maintained.

[0117] Example 2

[0118] In Example 2, the UE sends first information to the base station (the first information includes: capability information associated with the maximum duration of DMRS binding supported by the first communication node in the terrestrial network TN, and capability information associated with the maximum duration of DMRS binding supported by the first communication node without considering the event determined by the first communication node that causes the phase continuity and / or power consistency between time slots to be unable to be maintained). In addition, the UE can send second information to the base station. For the second information, the UE can be implemented in the form of reporting the time interval between two events that cause the phase continuity and / or power consistency between time slots to be unable to be maintained, or in any of the ways described in the above embodiments. The base station sends the length of TDW to the UE. The length of TDW can be determined by the base station based on the first information. The UE can determine the nominal TDW based on the length of TDW. Or the UE can determine the nominal TDW based on the first information and / or the duration of the uplink repeated transmission. The UE can determine the actual TDW based on the nominal TDW, the event that causes the phase continuity and / or power consistency between time slots to be unable to be maintained, and the second information.

[0119] Example 3

[0120] In Example 3, the UE sends first information to the base station (the first information includes: first indication information, capability information associated with the maximum duration of DMRS bundling supported by the first communication node in the terrestrial network TN). In addition, the UE can send second information to the base station. For the second information, the UE can implement it in the form of reporting the time interval between TA pre-compensation updates, or in any of the ways described in the above embodiments. The base station sends the length of TDW to the UE. The length of TDW can be determined by the base station based on the first information. The UE can determine the nominal TDW based on the length of TDW. Or the UE can determine the nominal TDW based on the first information and / or the duration of the uplink repeated transmission. The UE can determine the actual TDW based on the nominal TDW, the event that causes the phase continuity and / or power consistency between time slots to be unable to be maintained, and the second information.

[0121] Example 4

[0122] In Example 4, the UE sends first information to the base station (the first information includes: capability information associated with the maximum duration of DMRS binding supported by the first communication node without considering TA pre-compensation updates and / or antenna switching). In addition, the UE can send second information to the base station. For the second information, the UE can implement it in the form of reporting the time interval between TA pre-compensation updates, or in any of the ways described in the above embodiments. The base station sends the length of TDW to the UE. The length of TDW can be determined by the base station based on the first information. The UE can determine the nominal TDW based on the length of TDW. Or the UE can determine the nominal TDW based on the first information and / or the duration of the uplink repeated transmission. The UE can determine the actual TDW based on the nominal TDW, the event that causes the phase continuity and / or power consistency between time slots to be unable to be maintained, and the second information.

[0123] It should also be noted that the above embodiments and examples of the present application can also be applied to the downlink. In this case, a nominal TDW can be configured to the base station, and the above-mentioned events that cause the phase continuity and / or power consistency between time slots to be unable to be maintained can be used to determine the actual TDW in the downlink.

[0124] FIG6 is a schematic structural diagram of a device for determining a time domain window provided by an embodiment. The device may be configured in a first communication node. As shown in FIG6 , the device includes: a communication module 10 and a determination module 11 .

[0125] The communication module 10 is configured to send the first information to the second communication node;

[0126] The determination module 11 is configured to determine a time domain window TDW to which a demodulation reference signal DMRS is bound.

[0127] The time domain window determination device provided in this embodiment is used to implement the time domain window determination method of the above embodiment. The implementation principle and technical effects of the time domain window determination device provided in this embodiment are similar to those of the above embodiment and will not be repeated here.

[0128] In an embodiment, the TDW includes at least one of a nominal TDW and an actual TDW.

[0129] In one embodiment, the determination module 11 is configured to determine the nominal TDW according to the first information and / or the duration of uplink repeated transmission; and determine the nominal TDW according to the length of the TDW sent by the second communication node.

[0130] In one embodiment, the first information includes at least one of the following information:

[0131] capability information associated with a maximum duration of demodulation reference signal (DMRS) bundling in a non-terrestrial network (NTN) supported by the first communication node;

[0132] First indication information, where the first indication information is used to indicate whether timing advance TA pre-compensation update is allowed within the actual TDW;

[0133] Second indication information, the second indication information is used to indicate whether the first communication node can maintain phase continuity and / or power consistency between time slots when the TA pre-compensation is updated;

[0134] capability information associated with a maximum duration of DMRS bundling in a terrestrial network TN supported by the first communication node;

[0135] capability information associated with the maximum duration of DMRS bundling supported by the first communication node when not taking into account TA pre-compensation update and / or antenna switching;

[0136] The capability information associated with the maximum duration of DMRS bundling supported by the first communication node when an event determined by the first communication node that causes phase continuity and / or power consistency between time slots to not be maintained is not taken into account.

[0137] In one embodiment, the maximum duration of DMRS bundling in the NTN supported by the first communication node is determined based on at least one of the following information:

[0138] Phase pre-compensation capability information;

[0139] Timing of TA pre-compensation update;

[0140] TA pre-compensation update period;

[0141] Antenna switching timing;

[0142] Antenna switching period.

[0143] In one embodiment, the communication module 10 is further configured to send second information to the second communication node, where the second information is used to indicate a timing of an event that causes phase continuity and / or power consistency between time slots to be unable to be maintained.

[0144] In one embodiment, the event that causes the phase continuity and / or power consistency between time slots to fail to be maintained includes at least one of the following:

[0145] TA pre-compensation update;

[0146] Antenna switching;

[0147] The phases between the time slots are discontinuous or the phase difference is greater than or equal to a first threshold;

[0148] The powers between the time slots are inconsistent or the power difference is greater than or equal to the second threshold.

[0149] In one embodiment, the length of the TDW is determined by the second communication node based on at least one of the first information and the second information;

[0150] Alternatively, the actual TDW is determined by the first communication node based on the second information and the nominal TDW.

[0151] In one embodiment, the second information is implemented in at least one of the following forms:

[0152] At least one timestamp;

[0153] Period and / or start time;

[0154] At least one time interval or duration.

[0155] In one embodiment, the communication module 10 is configured to send second information to the second communication node through any one of the transport block TB, the physical uplink control channel PUCCH, the physical uplink shared channel PUSCH, and the medium access control control element MAC CE before DMRS binding; and / or send the second information to the second communication node through radio resource control RRC signaling.

[0156] FIG7 is a schematic structural diagram of another device for determining a time domain window provided by an embodiment. The device may be configured in a second communication node. As shown in FIG7 , the device includes: a communication module 20 and a determination module 21 .

[0157] The communication module 20 is configured to receive the first information sent by the first communication node;

[0158] A determination module 21 is configured to determine the length of a time domain window TDW to which a demodulation reference signal DMRS is bound;

[0159] The communication module 20 is further configured to send the length of the TDW to the first communication node.

[0160] The time domain window determination device provided in this embodiment is used to implement the time domain window determination method of the above embodiment. The implementation principle and technical effects of the time domain window determination device provided in this embodiment are similar to those of the above embodiment and will not be repeated here.

[0161] In one embodiment, the first information includes at least one of the following information:

[0162] capability information associated with a maximum duration of demodulation reference signal (DMRS) bundling in a non-terrestrial network (NTN) supported by the first communication node;

[0163] First indication information, where the first indication information is used to indicate whether timing advance TA pre-compensation update is allowed within the actual TDW;

[0164] Second indication information, the second indication information is used to indicate whether the first communication node can maintain phase continuity and / or power consistency between time slots when the TA pre-compensation is updated;

[0165] capability information associated with a maximum duration of DMRS bundling in a terrestrial network TN supported by the first communication node;

[0166] capability information associated with the maximum duration of DMRS bundling supported by the first communication node when not taking into account TA pre-compensation update and / or antenna switching;

[0167] The capability information associated with the maximum duration of DMRS bundling supported by the first communication node when an event determined by the first communication node that causes phase continuity and / or power consistency between time slots to not be maintained is not taken into account.

[0168] In one embodiment, the maximum duration of DMRS bundling in the NTN supported by the first communication node is determined based on at least one of the following information:

[0169] Phase pre-compensation capability information;

[0170] Timing of TA pre-compensation update;

[0171] TA pre-compensation update period;

[0172] Antenna switching timing;

[0173] Antenna switching period.

[0174] In one embodiment, the communication module 20 is further configured to receive second information sent by the first communication node, where the second information is used to indicate a timing of an event that causes phase continuity and / or power consistency between time slots to be unable to be maintained.

[0175] In one embodiment, the event that causes the phase continuity and / or power consistency between time slots to fail to be maintained includes at least one of the following:

[0176] TA pre-compensation update;

[0177] Antenna switching;

[0178] The phases between the time slots are discontinuous or the phase difference is greater than or equal to a first threshold;

[0179] The powers between the time slots are inconsistent or the power difference is greater than or equal to the second threshold.

[0180] In one embodiment, the determination module 21 is configured to determine the length of the TDW according to at least one of the first information and the second information.

[0181] In one embodiment, the second information is implemented in at least one of the following forms:

[0182] At least one timestamp;

[0183] Period and / or start time;

[0184] At least one time interval or duration.

[0185] In one embodiment, the communication module 20 is configured to receive the second information sent by the first communication node through any one of the transport block TB, the physical uplink control channel PUCCH, the physical uplink shared channel PUSCH, and the medium access control control unit MAC CE; and / or, to receive the second information sent by the first communication node through the radio resource control RRC signaling.

[0186] An embodiment of the present application further provides a communication node, comprising: a processor, the processor being configured to implement the method provided in any embodiment of the present application when executing a computer program. Specifically, the communication node may be a first communication node or a second communication node. Exemplarily, the first communication node may be a terminal device provided in any embodiment of the present application, such as a UE, which is not specifically limited in this application. The second communication node may be an access network device provided in any embodiment of the present application, such as a base station, which is not specifically limited in this application.

[0187] Illustratively, the following embodiments respectively provide structural diagrams in which a communication node is a base station and a UE.

[0188] FIG8 is a schematic diagram of the structure of a base station provided by an embodiment. As shown in FIG8 , the base station includes a processor 60, a memory 61, and a communication interface 62. The base station may contain one or more processors 60, with FIG8 assuming one processor 60 as an example. The processor 60, memory 61, and communication interface 62 in the base station may be connected via a bus or other means, with FIG8 assuming a bus connection as an example. The term "bus" refers to one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, and a processor or a local bus using any of a variety of bus structures.

[0189] The memory 61, as a computer-readable storage medium, can be configured to store software programs, computer-executable programs, and modules, such as program instructions / modules corresponding to the methods in the embodiments of the present application. The processor 60 executes the software programs, instructions, and modules stored in the memory 61 to execute at least one functional application and data processing of the base station, thereby implementing the above-mentioned method.

[0190] Memory 61 may include a program storage area and a data storage area. The program storage area may store an operating system and at least one application required for a function; the data storage area may store data generated based on the terminal's usage. Furthermore, memory 61 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state memory device. In some examples, memory 61 may include memory remote from processor 60, and such remote memory may be connected to a base station via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a network, a mobile communication network, and combinations thereof.

[0191] The communication interface 62 can be configured to receive and send data.

[0192] Figure 9 is a schematic structural diagram of a UE provided by an embodiment. The UE can be implemented in various forms. The UE in this application may include but is not limited to mobile terminal devices such as mobile phones, smart phones, laptops, digital broadcast receivers, personal digital assistants (PDAs), tablet computers (PADs), portable multimedia players (PMPs), navigation devices, vehicle-mounted terminal devices, vehicle-mounted display terminals, vehicle-mounted electronic rearview mirrors, etc., as well as fixed terminal devices such as digital televisions (TVs) and desktop computers.

[0193] As shown in FIG9 , UE 50 may include a wireless communication unit 51, an audio / video (A / V) input unit 52, a user input unit 53, a sensing unit 54, an output unit 55, a memory 56, an interface unit 57, a processor 58, and a power supply unit 59, among others. FIG9 shows a UE including various components, but it should be understood that implementation of all illustrated components is not required. More or fewer components may be implemented instead.

[0194] In this embodiment, the wireless communication unit 51 allows radio communication between the UE 50 and a base station or network. The A / V input unit 52 is configured to receive audio or video signals. The user input unit 53 can generate key input data based on user input commands to control various operations of the UE 50. The sensing unit 54 detects the current state of the UE 50, the location of the UE 50, the presence or absence of user touch input to the UE 50, the orientation of the UE 50, the acceleration or deceleration movement and direction of the UE 50, and generates commands or signals for controlling the operation of the UE 50. The interface unit 57 serves as an interface through which at least one external device can connect to the UE 50. The output unit 55 is configured to provide output signals in a visual, audio, and / or tactile manner. The memory 56 can store software programs, etc., for processing and control operations executed by the processor 58, or can temporarily store data that has been output or is to be output. The memory 56 can include at least one type of storage medium. Furthermore, the UE 50 can cooperate with a network storage device that performs the storage function of the memory 56 via a network connection. The processor 58 generally controls the overall operation of the UE 50. The power supply unit 59 receives external power or internal power under the control of the processor 58 and provides appropriate power required to operate various elements and components.

[0195] The processor 58 executes at least one functional application and data processing by running the program stored in the memory 56, such as implementing the method provided in the embodiment of the present application.

[0196] An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the method provided in any embodiment of the present application is implemented.

[0197] The computer storage medium of the embodiment of the present application can adopt any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or component, or any combination of the above. The computer-readable storage medium includes (a non-exhaustive list): an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it.

[0198] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, the data signal carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transfer a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0199] The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wire, optical cable, radio frequency (RF), etc., or any suitable combination of the foregoing.

[0200] Computer program code for performing the operations of the present disclosure may be written in one or more programming languages ​​or a combination of multiple programming languages, including object-oriented programming languages ​​(such as Java, Smalltalk, C++, Ruby, Go), and conventional procedural programming languages ​​(such as "C" or similar programming languages). The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0201] It will be appreciated by those skilled in the art that the term user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a vehicle-mounted mobile station.

[0202] In general, various embodiments of the present application may be implemented in hardware or dedicated circuits, software, logic, or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although the present application is not limited thereto.

[0203] Embodiments of the present application may be implemented by executing computer program instructions by a data processor of a mobile device, for example, in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0204] Any block diagram of a logical flow in the drawings of this application may represent program steps, or may represent interconnected logical circuits, modules and functions, or may represent a combination of program steps and logical circuits, modules and functions. A computer program may be stored on a memory. The memory may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read-only memory (ROM), random access memory (RAM), optical memory devices and systems (digital versatile discs DVD or CD), etc. Computer-readable media may include non-transitory storage media. A data processor may be of any type suitable for the local technical environment, such as, but not limited to, a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (FPGA), and a processor based on a multi-core processor architecture.

Claims

1. A method for determining a time domain window, applied to a first communication node, comprising: Sending first information to the second communication node; A time domain window TDW for demodulation reference signal DMRS bundling is determined.

2. The method according to claim 1, wherein: The TDW includes at least one of a nominal TDW and an actual TDW.

3. The method according to claim 2, wherein: The TDW includes a nominal TDW, and determining the nominal TDW for DMRS binding includes: Determine the nominal TDW according to at least one of the first information and a duration of uplink repeated transmission; Alternatively, the nominal TDW is determined according to the length of the TDW sent by the second communication node.

4. The method according to claim 2, wherein: The first information includes at least one of the following information: capability information associated with a maximum duration of DMRS bundling in a non-terrestrial network NTN supported by the first communication node; first indication information, where the first indication information is used to indicate whether a timing advance TA pre-compensation update is allowed within the actual TDW; second indication information, where the second indication information is used to indicate whether the first communication node can maintain at least one of phase continuity and power consistency between time slots when the TA pre-compensation is updated; capability information associated with a maximum duration of DMRS bundling in a terrestrial network TN supported by the first communication node; capability information associated with a maximum duration of DMRS bundling supported by the first communication node without considering at least one of TA pre-compensation update and antenna switching; Capability information associated with a maximum duration of DMRS bundling supported by the first communication node without regard to an event determined by the first communication node that causes at least one of phase continuity and power consistency between time slots to not be maintained.

5. The method according to claim 4, wherein: The maximum duration of DMRS bundling in the NTN supported by the first communication node is determined based on at least one of the following information: Phase pre-compensation capability information; The timing of TA pre-compensation update; TA pre-compensation update period; Antenna switching timing; Antenna switching cycle.

6. The method according to claim 2, further comprising: Second information is sent to the second communication node, the second information being used to indicate a timing of an event that causes at least one of phase continuity and power consistency between time slots to fail to be maintained.

7. The method according to claim 6, wherein: The event that causes at least one of phase continuity and power consistency between time slots to fail to be maintained includes at least one of the following: TA pre-compensation update; Antenna switching; The phase between the time slots is discontinuous or the phase difference is greater than or equal to a first threshold; The powers between the time slots are inconsistent or the power difference is greater than or equal to the second threshold.

8. The method according to claim 6, wherein: The length of the TDW is determined by the second communication node based on at least one of the first information and the second information; Alternatively, the actual TDW is determined by the first communication node based on the second information and the nominal TDW.

9. The method according to claim 6, wherein: The second information is implemented in at least one of the following forms: At least one timestamp; at least one of a period and a start time; At least one time interval or duration.

10. The method according to claim 6, wherein: The sending the second information to the second communication node comprises at least one of the following: Before DMRS binding, send second information to the second communication node through any one of a transport block TB, a physical uplink control channel PUCCH, a physical uplink shared channel PUSCH, and a medium access control control element MAC CE; The second information is sent to the second communication node via radio resource control RRC signaling.

11. A method for determining a time domain window, applied to a second communication node, comprising: Receiving first information sent by a first communication node; Determine the length of the time domain window TDW to which the demodulation reference signal DMRS is bound; The length of the TDW is sent to the first communication node.

12. The method according to claim 11, wherein: The TDW includes at least one of a nominal TDW and an actual TDW, and the first information includes at least one of the following information: capability information associated with a maximum duration of DMRS bundling in a non-terrestrial network NTN supported by the first communication node; first indication information, where the first indication information is used to indicate whether a timing advance TA pre-compensation update is allowed within the actual TDW; second indication information, where the second indication information is used to indicate whether the first communication node can maintain at least one of phase continuity and power consistency between time slots when the TA pre-compensation is updated; capability information associated with a maximum duration of DMRS bundling in a terrestrial network TN supported by the first communication node; capability information associated with a maximum duration of DMRS bundling supported by the first communication node without considering at least one of TA pre-compensation update and antenna switching; Capability information associated with a maximum duration of DMRS bundling supported by the first communication node without regard to an event determined by the first communication node that causes at least one of phase continuity and power consistency between time slots to not be maintained.

13. The method according to claim 12, wherein: The maximum duration of DMRS bundling in the NTN supported by the first communication node is determined based on at least one of the following information: Phase pre-compensation capability information; The timing of TA pre-compensation update; TA pre-compensation update period; Antenna switching timing; Antenna switching cycle.

14. The method according to claim 11, further comprising: Second information sent by the first communication node is received, where the second information is used to indicate a timing of an event that causes at least one of phase continuity and power consistency between time slots to fail to be maintained.

15. The method according to claim 14, wherein: The event that causes at least one of phase continuity and power consistency between time slots to fail to be maintained includes at least one of the following: TA pre-compensation update; Antenna switching; The phase between the time slots is discontinuous or the phase difference is greater than or equal to a first threshold; The powers between the time slots are inconsistent or the power difference is greater than or equal to the second threshold.

16. The method according to claim 14, wherein: The determining the length of the TDW bound to the DMRS includes: The length of the TDW is determined according to at least one of the first information and the second information.

17. The method according to claim 14, wherein: The second information is implemented in at least one of the following forms: At least one timestamp; at least one of a period and a start time; At least one time interval or duration.

18. The method according to claim 14, wherein: The receiving the second information sent by the first communication node includes at least one of the following: Receiving the second information sent by the first communication node through any one of a transport block TB, a physical uplink control channel PUCCH, a physical uplink shared channel PUSCH, and a medium access control control element MAC CE; The second information sent by the first communication node is received through radio resource control RRC signaling.

19. A communication node, comprising: processor; The processor is used to implement the method for determining the time domain window as described in any one of claims 1-10 or 11-18 when executing the computer program.

20. A computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, the method for determining a time domain window according to any one of claims 1-10 or 11-18 is implemented.

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