Channel transmission method, device, terminal, base station and storage medium

Abstract

The embodiment of the present application provides a channel transmission method, device, terminal, base station and storage medium, wherein the method comprises: receiving pre-configured uplink resource PUR configuration information configured by the base station through dedicated signaling; determining the timing advance TA when the PUR resource is determined to belong to the current resident cell before the time domain position of the PUR resource corresponding to the PUR configuration information; and sending the physical uplink shared channel PUSCH using the TA on the PUR resource when in the target service state, wherein the target state indicates that there is no radio resource control RRC connection with the base station. The embodiment of the present application saves radio resources and reduces the power consumption of the terminal UE by implementing channel transmission based on the PUR function in a non-terrestrial network.

Description

Technical Field

[0001] The present invention relates to the field of wireless communications, and in particular to a channel transmission method, device, terminal, base station and storage medium. Background Art

[0002] In the terrestrial networks of Narrow Band Internet of Things (NB-IOT) and enhanced machine type communication (eMTC), the PUR function is introduced to save energy for terminal UEs: Physical Uplink Shared Channel (PUSCH) link resources are pre-configured for UEs with fixed service modes, and UEs in RRC_IDLE or RRC_INACTIVE states can directly send uplink data on the pre-configured PUSCH resources, thereby saving the process of accessing the Physical Random Access Channel (PRACH) and reducing the power consumption of the UE. However, the premise of using the PUR function is that the timing advance (TA) of the UE remains unchanged, and the way to ensure that the TA of the UE remains unchanged is that the UE is in a stationary state. Therefore, in the terrestrial networks of NB-IOT and eMTC, the PUR function is only applicable to stationary UEs.

[0003] However, for non-terrestrial networks (NTN), especially low-orbit satellite wireless networks, even if the UE is stationary, the satellite will move, that is, the cell and the satellite may be in a relatively mobile state, resulting in the cell that configures PUR resources for the UE and the cell that ultimately transmits PUR to the UE may not be the same cell, and the TA of the UE is also constantly changing. Therefore, the PUR function cannot be applied in the NTN network. Now, a method for channel transmission based on the PUR function is urgently needed in the NTN network. Summary of the invention

[0004] The main purpose of the embodiments of the present application is to propose a channel transmission method, device, terminal, base station and storage medium, which aims to realize channel transmission based on the PUR function in a non-terrestrial network, save wireless resources and reduce UE power consumption.

[0005] An embodiment of the present application provides a channel transmission method, the method comprising: receiving pre-configured uplink resource PUR configuration information configured by a base station through dedicated signaling; determining a timing advance TA when it is determined that the PUR resource belongs to a current resident cell before the time domain position of the PUR resource corresponding to the PUR configuration information; and sending a physical uplink shared channel PUSCH using the TA on the PUR resource when in a target service state, wherein the target state indicates that there is no radio resource control RRC connection with the base station.

[0006] An embodiment of the present application also provides a channel transmission method, which includes: configuring pre-configured uplink resource PUR configuration information of a terminal through dedicated signaling; and receiving a physical uplink shared channel PUSCH transmitted on the PUR resources corresponding to the PUR configuration information.

[0007] An embodiment of the present application also provides a timing advance updating method, the method comprising: updating the timing advance of a PUR resource according to a received random access response message.

[0008] An embodiment of the present application also provides a channel transmission method, which includes: obtaining public pre-configured uplink resource PUR configuration information configured by a base station through public signaling; determining a timing advance TA, and sending a PUSCH on a public PUR resource corresponding to the public PUR configuration information according to the TA.

[0009] An embodiment of the present application also provides a channel transmission method, which includes: configuring public pre-configured uplink resource PUR configuration information of a terminal according to public signaling; and receiving a PUSCH sent on a public PUR resource corresponding to the public PUR configuration information.

[0010] The embodiment of the present application also provides a channel transmission device, which includes:

[0011] A configuration receiving module is used to receive pre-configured uplink resource PUR configuration information configured by the base station through dedicated signaling;

[0012] A timing advance module, configured to determine a timing advance TA when it is determined that the PUR resource belongs to a current resident cell before the time domain position of the PUR resource corresponding to the PUR configuration information;

[0013] The channel sending module is used to send a physical uplink shared channel PUSCH using the TA on the PUR resource when in a target service state, wherein the target state indicates that there is no radio resource control RRC connection with the base station.

[0014] The present application also provides another channel transmission device, which includes:

[0015] An information configuration module, used to configure the pre-configured uplink resource PUR configuration information of the terminal through dedicated signaling;

[0016] The channel receiving module is used to receive a physical uplink shared channel PUSCH transmitted on the PUR resource corresponding to the PUR configuration information.

[0017] The present application also provides a terminal, which includes:

[0018] one or more processors;

[0019] a memory for storing one or more programs,

[0020] When the one or more programs are executed by the one or more processors, the one or more processors implement the channel transmission method as described in any one of the embodiments of the present application.

[0021] The present application also provides a base station, which includes:

[0022] one or more processors;

[0023] a memory for storing one or more programs,

[0024] When the one or more programs are executed by the one or more processors, the one or more processors implement the channel transmission method as described in any one of the embodiments of the present application.

[0025] 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 channel state information transmission method as described in any one of the embodiments of the present application is implemented.

[0026] In an embodiment of the present application, by receiving pre-configured uplink resource PUR configuration information configured by a base station, the PUR configuration information is transmitted through dedicated signaling. When it is determined that the PUR resource belongs to the current resident cell before the time domain position of the PUR resource corresponding to the PUR configuration information, the timing advance TA is determined, and PUSCH is sent based on TA on the PUR resource when there is no RRC connection with the base station, thereby realizing channel transmission based on the PUR function in a non-terrestrial network, saving wireless resources, and reducing UE power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a flow chart of a channel transmission method provided by an embodiment of the present application;

[0028] Figure 2 is a flow chart of another channel transmission method provided by an embodiment of the present application;

[0029] Figure 3 is a flow chart of another channel transmission method provided by an embodiment of the present application;

[0030] Figure 4 is a flow chart of another channel transmission method provided by an embodiment of the present application;

[0031] Figure 5 is a flow chart of another channel transmission method provided by an embodiment of the present application;

[0032] Figure 6 is an example diagram of a channel transmission method provided in an embodiment of the present application;

[0033] Figure 7 This is an example diagram of a PUR resource configuration provided by an embodiment of the present application;

[0034] Figure 8 is an example diagram of another PUR resource configuration provided in an embodiment of the present application;

[0035] Fig. 9 is a flow chart of a timing advance update method provided in an embodiment of the present application;

[0036] Fig.10 is a flow chart of a channel transmission method provided by an embodiment of the present application;

[0037] Fig.11 is a flow chart of another channel transmission method provided by an embodiment of the present application;

[0038] Fig.12 is a flow chart of another channel transmission method provided by an embodiment of the present application;

[0039] Fig.13 is a flow chart of a channel transmission method provided by an embodiment of the present application;

[0040] Fig.14 is an example diagram of a channel transmission method provided in an embodiment of the present application;

[0041] Fig.15 It is a structural schematic diagram of a channel transmission device provided in an embodiment of the present application;

[0042] Fig.16 is a structural schematic diagram of another channel transmission device provided in an embodiment of the present application;

[0043] Fig.17 is a structural diagram of another timing advance updating device provided in an embodiment of the present application;

[0044] Fig.18 It is a structural schematic diagram of a channel transmission device provided in an embodiment of the present application;

[0045] Fig.19 is a structural schematic diagram of another channel transmission device provided in an embodiment of the present application;

[0046] Fig. 20 is a schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0047] Fig.21 It is a structural diagram of a base station provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0049] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and have no special meanings. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0050] Figure 1 is a flow chart of a channel transmission method provided in an embodiment of the present application. The embodiment of the present application is applicable to the case of supporting PUR transmission in a non-terrestrial network. The method can be implemented by software and / or hardware methods and is generally integrated in a terminal. The terminal can be in a state without RRC connection with a base station, which can include RRC_IDLE state and RRC_INACTIVE state. See Figure 1 The method provided in the embodiment of the present application specifically includes the following steps:

[0051] Step 110: Receive pre-configured uplink resource PUR configuration information configured by the base station through dedicated signaling.

[0052] The dedicated signaling may be signaling sent by the base station to the terminal, and the signaling transmits PUR configuration information. The preconfigured uplink resource (PUR) configuration information may be information for configuring the preconfigured uplink resource, and may be determined by the base station or predefined.

[0053] In an embodiment of the present application, the terminal can receive PUR configuration information configured by the base station through dedicated signaling. It can be understood that the PUR configuration information can be carried in the dedicated signaling, and the PUR configuration information can also be indicated by the dedicated signaling. For example, multiple sets of PUR configuration information are configured in the terminal, and the corresponding PUR configuration information can be selected according to the dedicated signaling.

[0054] Step 120: When it is determined that the PUR resource belongs to the current resident cell before the PUR resource time domain position corresponding to the PUR configuration information, a timing advance TA is determined.

[0055] The timing advance (TA) may be the amount of time that a system frame indicating the UE to send uplink data is advanced compared to a downlink frame during uplink transmission by the UE.

[0056] Specifically, a UE in RRC_IDLE or RRC_INACTIVE state can configure PUR resources according to the PUR configuration information, and determine whether the configured PUR resources are resources of the cell where the UE is currently staying before the start of the PUR resources. If so, the UE can communicate according to the PUR resources and determine the advance timing TA.

[0057] Step 130: When in a target service state, use the TA to send a physical uplink shared channel PUSCH on PUR resources, wherein the target state indicates that there is no radio resource control RRC connection with the base station.

[0058] The target state may be the current service state of the UE, specifically a state in which the terminal has no RRC connection with the base station, for example, an RRC_IDLE state or an RRC_INACTIVE state.

[0059] In an embodiment of the present application, when the terminal is in a target service state, PUSCH can be sent based on TA on PUR resources to achieve PUSCH transmission.

[0060] In an embodiment of the present application, by receiving the pre-configured uplink resource PUR configuration information configured by the base station, the PUR configuration information is transmitted through dedicated signaling. When it is determined that the PUR resource belongs to the current resident cell before the time domain position of the PUR resource corresponding to the PUR configuration information, the timing is advanced by TA, and PUSCH is sent based on TA on the PUR resource, thereby realizing channel transmission based on the PUR function in a non-terrestrial network, saving wireless resources, and reducing UE power consumption.

[0061] Further, based on the above application embodiment, the target service state includes at least one of the following: RRC_IDLE state, RRC_INACTIVE state.

[0062] Specifically, when the terminal is in the RRC_IDLE state or the RRC_INACTIVE state, the terminal may send the PUSCH using the extracted and determined TA on the PUR resources.

[0063] Further, based on the above application embodiment, the PUR configuration information includes at least one of the following:

[0064] PUR cycle, pre-configured uplink resource response time window timer PUR-ResponseWindowTimer, cell identifier, pre-configured resource uplink terminal search space PUR-USS, PUSCH resource configuration, PUSCH resource time domain start position information, PUSCH resource frequency domain position information, TA valid timer, reference signal received power RSRP change threshold, USS monitoring maximum duration, pre-configured uplink resource radio network temporary identifier PUR-RNTI, valid number of PUR resources, serving cell preamble, neighboring cell preamble, serving cell response reference signal configuration, neighboring cell response reference signal configuration, scheduling request resources, configuration authorization CG resources.

[0065] Further, based on the above application embodiment, the PUR resource configuration information includes PUR resource lists of at least two cells, and each of the PUR resource lists includes at least one of the following information:

[0066] PUR resource public configuration part, PUR resource cell level configuration part, wherein the PUR resource public configuration part includes at least one of the following: PUR cycle, PUR response time window timer Pur-ResponseWindowTimer, the PUR resource cell level configuration part includes at least one of the following: cell identification, pre-configured resource uplink terminal search space PUR-USS, PUSCH resource configuration, PUSCH resource time domain start position information, PUSCH resource frequency domain position information, TA effective timer, RSRP change threshold, USS monitoring maximum duration, pre-configured resource uplink radio network temporary identifier PUR-RNTI, and the number of valid PUR resources.

[0067] Among them, the PUR resource public configuration part may include: PUR cycle, PUR response time window timer pur-ResponseWindowTimer; the PUR resource cell level configuration part may include: cell identifier, pre-configured resource uplink terminal search space PUR-USS, PUSCH resource configuration, PUSCH resource time domain start position information, PUSCH resource frequency domain position information, TA effective timer, reference signal received power RSRP change threshold, USS monitoring maximum duration, pre-configured uplink resource radio network temporary identifier PUR-RNTI, and the number of valid PUR resources.

[0068] In an embodiment of the present application, the PUR configuration information can be configured for a cell, and different cells have various corresponding PUR resource lists. The PUR resource list may include a PUR resource public configuration part, a PUR resource cell level configuration part, a PUSCH resource time domain start position information, a PUSCH resource frequency domain position information, a TA valid timer, an RSRP change threshold, a pre-configured resource uplink radio network temporary identifier PUR-RNTI, and at least one of the valid number of PUR resources.

[0069] Further, based on the above application embodiment, the time domain location information of the PUSCH resource is represented by at least one of the following methods:

[0070] Expressed according to the absolute time of the satellite clock; expressed together with the absolute time of the satellite clock and the relative time synchronized with the base station wirelessly.

[0071] The satellite clock may be clock information in the wireless communication time domain, and the clock information in the non-terrestrial network may be a satellite clock.

[0072] Specifically, the time domain position in the non-terrestrial network can be represented by a satellite clock, which may include directly using the absolute time of the satellite clock, or the absolute time of the satellite clock plus the relative time of the wireless synchronization delay between the terminal and the base station.

[0073] Further, based on the above-mentioned application embodiment, the determination of timing advance TA includes at least one of the following: obtaining TA according to historical TA record information, wherein the validity of the historical TA record information is determined by a TA valid timer and / or an RSRP change threshold; obtaining TA according to satellite positioning information.

[0074] Further, based on the above application embodiment, the TA valid timer is configured in at least one of the following ways:

[0075] Configure the TA valid timer according to the UE; configure the TA valid timer according to the PUR cell level.

[0076] In the embodiment of the present application, the TA valid timer in the PUR configuration information can configure the TA valid timer for the UE, and each UE corresponds to its own TA valid timer. The TA valid timer of the PUR resource can also be configured at the cell level, and each PUR resource in each cell corresponds to a TA valid timer.

[0077] Furthermore, in the embodiment of the present application, when configuring PUR resources, the base station may obtain the configured PUR resources from the base station or the base station distribution unit.

[0078] Figure 2 is a flow chart of another channel transmission method provided in an embodiment of the present application. The embodiment of the present application is applicable to the case where PUR transmission is supported in a non-terrestrial network. The method can be implemented by software and / or hardware methods and is generally integrated in a base station. Figure 2 The method provided in the embodiment of the present application specifically includes the following steps:

[0079] Step 210: Configure the pre-configured uplink resource PUR configuration information of the terminal through dedicated signaling.

[0080] Specifically, the base station can configure the preconfigured uplink resource PUR configuration information of the terminal through dedicated signaling, wherein the dedicated signaling can be a signaling sent by the base station to the terminal, and the signaling transmits the PUR configuration information. The preconfigured uplink resource (Preconfigured Uplink Resource, PUR) configuration information can be information for configuring the preconfigured uplink link consultation, which can be determined by the base station or predefined.

[0081] Step 220: Receive a physical uplink shared channel PUSCH transmitted on a PUR resource corresponding to the PUR configuration information.

[0082] In the embodiment of the present application, the terminal can configure the PUR resources according to the PUR configuration information, and send the PUSCH to the base station on the PUR resources. The base station can receive the PUSCH transmitted on the PUR resources corresponding to the PUR configuration information.

[0083] In the embodiment of the present application, the PUR configuration information of the terminal is configured through dedicated signaling, and the PUSCH transmitted on the PUR resource corresponding to the PUR configuration information is received, so as to realize channel transmission based on the PUR function in the non-terrestrial network, save wireless resources, and reduce UE power consumption.

[0084] Further, based on the above application embodiment, the PUR configuration information includes at least one of the following:

[0085] Pre-configured uplink resource response window timer PUR-Response Window Timer, cell number, pre-configured resource uplink synchronization signal PUR-USS, PUSCH resource configuration, PUR period, PUSCH resource time domain start position information, PUSCH resource frequency domain position information, TA valid timer, reference signal received power RSRP change threshold, USS monitoring maximum duration, pre-configured uplink resource radio network temporary identifier PUR-RNTI, valid number of PUR resources, serving cell preamble, neighbor cell preamble, serving cell response reference signal configuration, neighbor cell response reference signal configuration, scheduling request resources, configuration authorization CG resources.

[0086] Further, based on the above application embodiment, the PUR resource configuration information includes PUR resource lists of at least two cells, and each of the PUR resource lists includes at least one of the following information:

[0087] PUR resource public configuration part, PUR resource cell level configuration part, wherein the PUR resource public configuration part includes at least one of the following: PUR cycle, PUR response time window timer Pur-ResponseWindowTimer, the PUR resource cell level configuration part includes at least one of the following: cell identification, pre-configured resource uplink terminal search space PUR-USS, PUSCH resource configuration, PUSCH resource time domain start position information, PUSCH resource frequency domain position information, TA effective timer, RSRP change threshold, USS monitoring maximum duration, pre-configured resource uplink radio network temporary identifier PUR-RNTI, and the number of valid PUR resources.

[0088] Further, based on the above-mentioned application embodiment, the time domain position information of the PUSCH resource is represented by at least one of the following methods: represented according to the absolute time of the satellite clock; represented according to the absolute time of the satellite clock and the relative time of the terminal wireless synchronization.

[0089] Specifically, the time domain position in the non-terrestrial network can be represented by a satellite clock, which may include directly using the absolute time of the satellite clock, or the absolute time of the satellite clock plus the relative time of the wireless synchronization delay between the terminal and the base station.

[0090] Further, based on the above-mentioned application embodiment, the determination of timing advance TA includes at least one of the following: obtaining TA according to historical TA record information, wherein the validity of the historical TA record information is determined by a TA valid timer and / or an RSRP change threshold; obtaining TA according to satellite positioning information. Figure 3 is a flow chart of another channel transmission method provided in an embodiment of the present application. The embodiment of the present application is a specific implementation based on the above-mentioned embodiment of the application. Figure 3 The method provided in the embodiment of the present application specifically includes the following steps:

[0091] Step 310: Configure the pre-configured uplink resource PUR configuration information of the terminal through dedicated signaling.

[0092] Step 320: determine the target resident cell according to at least one of the terminal time domain position, the terminal movement trajectory, and the cell movement trajectory, and configure PUR resources.

[0093] In an embodiment of the present application, when a base station configures PUR resources for a terminal, the base station can determine the target resident cell based on at least one of the terminal's time domain position, the terminal's movement trajectory, and the cell's movement trajectory, and configure the PUR resources, wherein the target resident cell may be the cell where the terminal resides when using the PUR resources.

[0094] Step 330: Send the PUR resources to the terminal via the cell where the terminal currently resides.

[0095] Specifically, the PUR resources may be sent to the terminal through the cell in which the terminal currently resides, so that the terminal acquires the PUR resources.

[0096] Step 340: Receive a physical uplink shared channel PUSCH transmitted on a PUR resource corresponding to the PUR configuration information.

[0097] Figure 4 is a flow chart of another channel transmission method provided in an embodiment of the present application. The embodiment of the present application is a specific implementation based on the above-mentioned embodiment of the application. Figure 4 The method provided in the embodiment of the present application specifically includes the following steps:

[0098] Step 410: Configure the pre-configured uplink resource PUR configuration information of the terminal through dedicated signaling.

[0099] Step 420: Determine a target base station for the terminal according to at least one of the terminal time domain position, the terminal movement trajectory, and the cell movement trajectory.

[0100] In an embodiment of the present application, the base station can determine the target base station for providing PUR resources for the terminal based on at least one of the terminal time domain position, terminal movement trajectory, and cell movement trajectory of the terminal, and can send a request to the target base station so that the target base station configures PUR resources for the terminal.

[0101] Step 430: Receive the PUR resources configured by the target base station and send the PUR resources to the terminal.

[0102] Specifically, the PUR resource configured by the target base station may be received, and the PUR resource may be sent to the terminal.

[0103] Step 440: Receive a physical uplink shared channel PUSCH transmitted on a PUR resource corresponding to the PUR configuration information.

[0104] Figure 5 is a flow chart of another channel transmission method provided in an embodiment of the present application. The embodiment of the present application is a specific implementation based on the above-mentioned embodiment of the application. Figure 5 The method provided in the embodiment of the present application specifically includes the following steps:

[0105] Step 510: Configure the pre-configured uplink resource PUR configuration information of the terminal through dedicated signaling.

[0106] Step 520: The base station centralized unit CU requests PUR resources from the base station distributed unit DU through a PUR resource request.

[0107] In an embodiment of the present application, a central unit (CU) of a base station may send a PUR resource request to a distributed unit (DU) of the base station, requesting the DU to configure PUR resources for the terminal.

[0108] Step 530: The DU configures PUR resources according to the PUR resource request and sends the PUR resources to the CU.

[0109] Specifically, the DU configures the PUR resources according to the PUR resource request and sends the PUR resources to the CU, which is triggered by the CU to send the PUR resources to the terminal.

[0110] Step 540: Receive a physical uplink shared channel PUSCH transmitted on a PUR resource corresponding to the PUR configuration information.

[0111] Further, based on the above-mentioned application embodiment, the PUR resource request includes at least one of the following information: target cell identification information, message size of PUR resources, PUSCH resource time domain start position, PUSCH resource period, terminal location information, terminal movement trajectory information, and current resident cell location information.

[0112] Furthermore, based on the above application embodiment, the method further includes:

[0113] The CU sends a PUR resource release indication to the DU to release the PUR resource, wherein the PUR release indication includes at least one of the following:

[0114] The identification information of the target cell, the time domain and / or frequency domain location of the PUR resource, the PUR resource period, and the terminal location information.

[0115] Specifically, the CU may also send a PUR resource release indication to the DU, so that the DU releases the PUR resources configured for the terminal, and the PUR resource release indication includes at least one of the identification information of the target cell, the time domain and / or frequency domain position of the PUR resources, the PUR resource period, and the terminal location information.

[0116] Further, based on the above-mentioned application embodiment, the DU saves the time domain information and frequency domain information of the PUR resources, and the CU saves the security key and AS context information configured by the PUR.

[0117] For example, Figure 6 This is an example diagram of a channel transmission method provided in an embodiment of the present application. The base station eNB configures the PUR resource configuration of the terminal UE through dedicated signaling. Figure 6 , a channel transmission method may include the following process:

[0118] Step 1: The base station configures PUR resource information to the UE through dedicated signaling, and the PUR resource configuration information includes at least one of the following: PUR period, PUR response time window timer pur-ResponseWindowTimer, cell ID, PUR-USS, PUSCH resource configuration (UL grant), time domain location information of the start of PUSCH resource (UL grant), frequency domain location information of PUSCH resource (UL grant), TA validity locator, RSRP change threshold for TA judgment, maximum duration of USS monitoring, PUR-RNTI, and the valid number of PUR resources. PUR resource configuration information may also include: dedicated preamble, sounding, SR, and CG resources of the serving cell or neighboring cell.

[0119] The PUR resources may be those of the cell where the UE is currently camping, or may be PUR resources (list) of one or more other cells.

[0120] Step 2: Before the time domain location of the PUR resource, the UE determines whether the PUR dedicated resource configuration belongs to the current resident cell; if so, first calculate the TA based on information such as satellite positioning, or obtain the TA value based on historical TA record information, and then use the calculated TA to perform dedicated PUR transmission on the PUR resource.

[0121] Step 3: At the start position of the PUR resource, if the UE has uplink information to send, the PUSCH is directly sent on the PUSCH resource using the TA information obtained in Step 2.

[0122] Step 4: After sending the PUSCH, the UE shifts backward by n subframes and starts monitoring the PDCCH scrambled by the PUR-RNTI. The PDCCH is used for downlink PDSCH resource scheduling (DL Grant) or for PUR transmission confirmation (PUR ACK).

[0123] In Step 1:

[0124] If the PUR resource resource is a list of PUR resources of multiple cells, the resource configuration information can be organized according to the PUR resource common configuration part (such as PUR period, PUR response time window timer pur-ResponseWindowTimer) and the PUR resource cell-level configuration part (such as: cell ID, PUR-USS, PUSCH resource configuration (UL grant), time domain location information of the start of PUSCH resources (UL grant), frequency domain location information of PUSCH resources (UL grant), TA validity locator, RSRP change threshold for TA judgment, PUR-RNTI, and the number of PUR resources).

[0125] Wherein: the time domain location information of the start of the PUSCH resource can be represented by one of the following methods:

[0126] (1) Absolute time: Absolute time is in the format of [hour: minute: second: millisecond] and is accurate to at least milliseconds. The UE clock is derived from the satellite clock.

[0127] (2) Absolute time and relative time representation: Absolute time is in the format of [hour: minute: second], accurate to at least the second, and the UE clock is derived from the satellite clock; relative time is: system frame number + subframe number, which is derived from the wireless synchronization between the UE and the base station.

[0128] In Step 2: If the UE obtains the TA value based on the historical TA record information, the UE needs to save the TA information of the PUR resource time domain location. Whether the saved TA information is valid can be determined by the PUR TA validity timer (pur-TimeAlignmentTimer) and / or the RSRP change threshold of the PUR TA validity.

[0129] The PUR TA validity timer (pur-TimeAlignmentTimer) and / or the RSRP change threshold of PUR TA validity may be configured per UE, or as a PUR cell level configuration (if the PUR resource resource is a PUR resource list of multiple cells, each cell is configured separately);

[0130] If configured by UE, the PUR TA validity timer (pur-TimeAlignmentTimer) is started or restarted when the UE receives the PUR configuration; it is restarted after receiving the TAC MAC CE; the change of RSRP is based on the RSRP measurement value at the last valid PUR TA moment.

[0131] If configured as a PUR cell level, the PUR TA validity timer (pur-TimeAlignmentTimer) is started or restarted at the PUR resource start position corresponding to the cell when the UE receives the PUR configuration; it is restarted after receiving the TACMAC CE of the cell; the RSRP change is based on the most recent RSRP measurement value at the PUR resource start position.

[0132] At the time domain position of the PUR resource configuration, if the cell where the UE resides is inconsistent with the cell corresponding to the PUR resource, the UE automatically releases the configured PUR resources (it can release the UE-level PUR resources, or only release the PUR resources of the cell corresponding to the time domain position of the UE's PUR resource configuration); at the same time, the UE sends the PUR resource release indication to the base station.

[0133] Among them, see Figure 7 In Step 1, if the PUR resource information configured by the base station for the UE is not the cell where the UE is currently residing, the PUR resource configuration information carries the cell ID corresponding to the PUR resource, and the cell ID can be Physical Cell Identity (PCI) or CGI (Cell Global Identity). Figure 7 If the PUR resource information configured by the base station for the UE belongs to a cell under another base station, the base station first requests the PUR resource from the other base station, and then configures the PUR resource allocated by the other base station to the UE;

[0134] exist Figure 7 In the step 1, the UE resides in the base station 2, based on the time domain location of the UE service, the movement trajectory of the UE, and the movement trajectory of the cell, the UE calculates the target cell where the UE resides in the time domain location of the service, and then requests PUR resources from the base station 1 to which the target cell belongs. The PUR resource request includes at least one of the following information: target cell identifier, message size corresponding to the PUR resource, start time domain location of the PUSCH resource, period of the PUSCH resource, UE location information, UE movement trajectory information, and location information of the current resided cell.

[0135] Among them, the target cell identifier and (UE location information, UE movement trajectory information, location information of the current resident cell) in step 1 can be selected from either one.

[0136] Step 2: The base station where the target cell is located calculates the cell where the time domain location of the UE service is located based on the time domain location of the UE service, the movement trajectory of the UE, and the movement trajectory of the cell, and allocates PUR resources to the UE, and passes the allocated PUR resources to the base station where the UE is currently stationed. If there are multiple time domain locations of the UE service (such as periodic PUR services, multiple service patterns), there may be multiple (lists) of allocated PUR resources. The allocated PUR resources include at least one of the following information: cell identification, PUR period, PUR response time window timer pur-ResponseWindowTimer, cell ID, PUR-USS, PUSCH resource configuration (UL grant), time domain location information of the start of PUSCH resources (UL grant), frequency domain location information of UL grant, maximum duration of USS monitoring, PUR_RNTI, TA validity locator, RSRP change threshold for TA judgment, PUR-RNTI, and the valid number of PUR resources.

[0137] See also Figure 8 If the base station that allocates PUR resource information to the UE is a CU-DU separation architecture, the CU first requests PUR resources from the DU, and then the PUR resources allocated by the DU are configured to the UE.

[0138] exist Figure 8 In the process, Step 1: CU requests PUR resources from DU, and the PUR resource request includes at least one of the following information: identification information of the target cell, Message Size corresponding to the PUR resource, starting time domain position of the PUSCH resource, period of the PUSCH resource, UE location information, UE movement trajectory information, and location information of the current resident cell.

[0139] Step 2: DU calculates the cell where the time domain location of the UE service is located based on the time domain location of the UE service, the movement trajectory of the UE, and the movement trajectory of the cell, allocates PUR physical layer resources to the UE, and passes the allocated PUR resources to the CU;

[0140] DU stores the time-frequency domain information of PUR resources for PUR reception.

[0141] CU stores complete information such as security keys and AS context configured by PUR, which is used for UE identification, data integrity verification and security decryption, data forwarding, business process establishment, etc.

[0142] If there are multiple time domain locations of the UE service (such as periodic PUR services, multiple service patterns), there may be multiple (list) allocated PUR resources. The allocated PUR resources include at least one of the following information: identification information of the target cell, PUSCH resource configuration (UL grant), time domain location information of the start of the PUSCH resource (UL grant), and frequency domain location information of the PUSCH resource (UL grant).

[0143] Step 3: When the CU releases the PUR resources, it instructs the DU to release the allocated PUR resources. The instruction includes at least one of the following information: identification information of the target cell, time domain and / or frequency domain location corresponding to the PUR resources, period of the PUSCH resources, and UE location information.

[0144] The identification information of the target cell may be: a cell CGI or a cell index included in a CU.

[0145] The signaling interaction of Step 1 to Step 3 can be UE-level signaling without F1 port connection. The difference from the CG resource request during NR CU-DU separation is that NR allocates CG resources during UE CONTEXT SETUP or UE CONTEXT MODIFICATION, involving UE-level F1 connection, and CG resources are used for connected mode UE; while the signaling in this process: is only for the allocation and / or release of PUR resources, a special resource request and release process can be used, and there may be no complete F1 port UE context (the UE's F1-U connection is released immediately after the resource allocation is completed, or immediately after the resources are configured to the UE), and PUR resources are used for UEs in idle mode or RRC_INACTIVE state.

[0146] Fig. 9 is a flowchart of a timing advance update method provided in an embodiment of the present application. The embodiment of the present application is applicable to the case where PUR transmission is supported in a non-terrestrial network. The method can be implemented by software and / or hardware methods and is generally applied to UE. Fig. 9 The method provided in the embodiment of the present application specifically includes the following steps:

[0147] Step 610: Update the timing advance of the PUR resources according to the received random access response message.

[0148] Based on the embodiment of the present application, the base station eNB and / or the terminal UE may update the timing advance of the PUR resources according to the received random access response message.

[0149] Further, based on the above application embodiment, the updating of the timing advance of the PUR resource according to the received random access response message includes:

[0150] When a random access response message carrying a TAC command is received, the TA validity timer of the PUR resource is restarted.

[0151] Specifically, when a random access response message including a TAC command is received, the TA validity timer of the PUR resource may be restarted to implement the update of the TA.

[0152] Further, based on the above application embodiment, the updating of the timing advance of the PUR resource according to the received random access response message includes:

[0153] Step 611: Receive a random access response message and start a random access contention resolution process.

[0154] Specifically, when the random access response message is received, the UE may be controlled to start a random access contention resolution process.

[0155] Step 612: When contention resolution is successful during the random access process, restart the TA timer corresponding to the PUR.

[0156] Specifically, when the contention resolution of the random access process is successful, the UE may be controlled to restart the TA timer corresponding to the PUR.

[0157] Further, based on the above application embodiment, the updating of the timing advance of the PUR resource according to the received random access response message includes:

[0158] Step 621: Receive a random access response message, temporarily record the NTA value before the random access response message and initialize the TA timer.

[0159] In an embodiment of the present application, when a random access response message is received, the NTA value before the random access response message is recorded, and the TA timer is controlled to start or restart to achieve initialization.

[0160] Step 622: If the contention resolution fails, NTA is set to the NTA value before the temporary recorded random access response message; if the contention resolution succeeds, the NTA value before the temporary recorded random access response message is deleted, and the PUR-TA timer is set to the value of the TA timer.

[0161] Specifically, if the contention resolution of the random access process fails, NTA is set to the NTN value before the recorded random access response message; if the contention resolution of the random access process is successful, the recorded NTA value is deleted and the PUR-TA timer is set to the value of the TA timer.

[0162] Further, based on the above application embodiment, the updating of the timing advance of the PUR resource according to the received random access response message includes:

[0163] Step 631: Receive a random access response message, and record the NTA value before the random access message and the value of the PUR-TA timer.

[0164] Specifically, when the random access response message is received, the NTA value and the value of the PUR-TA timer are recorded.

[0165] Step 632: Restart the TA timer and the PUA-TA timer.

[0166] In the embodiment of the present application, the TA timer and the PUA-TA timer are controlled to restart respectively to achieve initialization.

[0167] Step 633: If the contention resolution fails, the NTA value is restored to the NTA value before the temporary recorded random access response message, and the PUR-TA timer is reassigned to the sum of the TA timer value and the recorded PUR-TA timer value.

[0168] Specifically, when the random access process competition resolution fails, NTA is set to the NTN value before the temporarily recorded random access response message, and the PUR-TA timer is set to the sum of the Legacy-TA timer value and the recorded PUR-TA timer value.

[0169] Step 634: If the contention resolution is successful, the recorded NTA value before the random access response message and the value of the PUR-TA timer are deleted.

[0170] Specifically, when the random access process contention resolution is successful, the recorded NTA value and the value of the PUR-TA timer are deleted.

[0171] In an exemplary implementation, the PUR TA can be coupled with the TA of the Random Access Procedure (RAR). After the dedicated PUR resources are configured for the UE, when the UE is in the IDLE or inactive state, if the UE has uplink data and the TA is valid, the UE can send on these PUR resources. When the UE enters the connected state, the UE will not release these PUR resources. If the UE enters the IDLE or inactive state again, these PUR resources may be available. When the UE receives the TAC MAC CE calibration command (TAC) carried by the base station PDCCH or PUSCH, the UE will update its own TA value and start the TA validity timer associated with the PUR (if the base station configures the TA validity timer for the PUR). If the PUR TA validity timer has not timed out, the PUR resources are available; otherwise, they are not available.

[0172] When the UE enters the connected state from the IDLE or inactive state, the UE may initiate a RACH process. When receiving the RAR, the RAR will carry the TAC. At this time, the UE will start the TA timer used in the connected state and update the TA value. However, the standard does not describe whether the current PUR TA Timer is restarted. The above process will lead to the following problems:

[0173] 1. At this time, if the RAR is not that of the UE and the subsequent RA of the UE has failed, the PUR TATimer may not time out after the TA is updated, but the TA may be unavailable, resulting in the failure of PUR sending.

[0174] 2. At this time, if the base station does not send TAC MAC CE in the connected state and the UE does not restart the PUR TA Timer: Since the TA value has been updated, although the TA value is valid, the PUR TA Timer may time out, and the UE will mistakenly believe that PUR is unavailable; If the base station does not send TAC MAC CE in the connected state, but the UE restarts the PUR TA Timer: Since the TA value has been updated, although the TA value is valid, the PUR TA Timer may time out, and the UE will mistakenly believe that PUR is unavailable.

[0175] The above problems can be solved in the following ways:

[0176] Method 1: When the UE receives a RAR and the RAR carries a TAC command, the UE restarts the PUR TA timer (if configured). After the UE initiates the RACH process, the UE will receive a RAR, but the RAR received by the UE may not be from the UE. It may be the RAR of another UE that is in contention, and the UE cannot distinguish it from the RAR. The UE will receive the RAR, and the UE will start the TA timer related to the PUR. If the RAR is not from the UE, the RACH process fails. Next, the UE will continue to initiate the RACH process, and if it receives a RAR, it will continue to restart the TA timer related to the PUR until it succeeds. When the RACH process is successful, the UE synchronization is successful, and the TA timer related to the PUR is also started.

[0177] Method 2: UE initiates RACH. After successful contention resolution, UE starts PUR-related TA timer (if configured). After successful contention resolution, RAR definitely belongs to the UE, and the TA value carried in RAR also belongs to the UE. At this time, UE starts PUR-related TA timer again.

[0178] Method 3: The UE maintains two NTA values ​​during the RA process; after receiving the RAR, the UE first temporarily records the NTA value before the RAR (PUR-NTA), then starts to maintain the legacy NTA (apply the Timing Advance Command for thisTAG), and starts or restarts the legacy TA Timer, but does not restart the PUR-TA Timer; if the RA contention resolution fails, the legacy NTA value is restored to PUR-NTA. If the RA contention resolution is successful, the PUR-NTA is deleted, and the PUR-TATimer is reassigned to the legacy TA Timer.

[0179] Method 4: The UE maintains two NTA values ​​during the RA process; after receiving the RAR, the UE temporarily records the NTA value (PUR-NTA) and the PUR TA Timer value before the RAR, and then starts to maintain the legacy NTA (apply the Timing AdvanceCommand for this TAG), and starts or restarts the legacy TA Timer, and restarts the PUR-TA Timer; if the RA competition resolution fails, the legacy NTA value is restored to PUR-NTA, and the PUR-TA Timer is reassigned to the legacy TA Timer + the recorded PUR TA Timer. If the RA competition resolution is successful, the recorded PUR-NTA and PUR TATimer values ​​are deleted.

[0180] Fig.10 is a flow chart of a channel transmission method provided in an embodiment of the present application. The embodiment of the present application is applicable to the case where PUR transmission is supported in a non-terrestrial network. The method can be implemented by software and / or hardware methods and is generally integrated in a terminal. Fig.10 The method provided in the embodiment of the present application specifically includes the following steps:

[0181] Step 710: Obtain configuration information of public pre-configured uplink resources PUR configured by the base station through public signaling.

[0182] In an embodiment of the present application, the base station may also configure public pre-configured uplink resource PUR configuration information through public signaling, and the terminal may receive the public PUR configuration information and configure the public PUR resources according to the public PUR configuration information.

[0183] Step 720: Determine the timing advance TA, and send the PUSCH on the common PUR resources corresponding to the common PUR configuration information according to the TA.

[0184] Specifically, the terminal may determine the timing advance TA, and send the PUSCH on the common PUR resources corresponding to the common PUR configuration information according to the TA.

[0185] In an embodiment of the present application, by receiving public pre-configured uplink resource PUR configuration information configured by a base station, the public PUR configuration information is transmitted through public signaling, the timing advance TA is determined, and PUSCH is selected based on TA for transmission on the public PUR resources, thereby realizing channel transmission based on the PUR function in a non-terrestrial network, saving wireless resources, and reducing UE power consumption.

[0186] Further, based on the above application embodiment, determining the timing advance TA includes:

[0187] The TA is determined based on satellite positioning.

[0188] In the embodiment of the present application, the terminal may determine the TA through satellite positioning.

[0189] Fig.11 is a flow chart of another channel transmission method provided in an embodiment of the present application. The embodiment of the present application is a specific implementation based on the above-mentioned embodiment of the application. Fig.11 The method provided in the embodiment of the present application specifically includes the following steps:

[0190] Step 810: Acquire the public pre-configured uplink resource PUR configuration information configured by the base station through public signaling.

[0191] Step 820: When the uplink transmission information is smaller than the PUSCH transport block size of the public PUR configuration information, determine the TA according to the satellite positioning, and select a PUSCH resource in the public PUR resource for transmission.

[0192] In an embodiment of the present application, when the uplink transmission information of the terminal is smaller than the transmission block size of the PUSCH in the public PUR configuration information, the satellite is used to determine the TA, and the PUSCH resource is selected on the PUR resource to transmit the uplink transmission information.

[0193] Step 830: When the uplink transmission information is greater than or equal to the PUSCH transport block size of the common PUR configuration information, select a preamble resource to initiate a random access process.

[0194] Specifically, if the uplink transmission information of the terminal is greater than or equal to the PUSCH transport block size in the common PUR configuration information, a random access process is initiated by using a preamble code to implement PUSCH transmission.

[0195] Fig.12 is a flow chart of another channel transmission method provided in an embodiment of the present application. The embodiment of the present application is a specific implementation based on the above-mentioned embodiment of the application. Fig.12 The method provided in the embodiment of the present application specifically includes the following steps:

[0196] Step 910: Acquire configuration information of public pre-configured uplink resources PUR configured by the base station through public signaling.

[0197] Step 920: Determine the TA according to the satellite positioning, and select a PUSCH resource from the public PUR resource for transmission.

[0198] In an embodiment of the present application, the terminal UE can determine the TA through satellite positioning, and select PUSCH resources from the public PUR resources configured by the public PUR configuration information to transmit uplink information.

[0199] Step 930: Monitor the PDCCH scrambled by the common PUR-RNTI and access the PUR CSS monitoring state.

[0200] Specifically, the terminal accesses the PUR CSS monitoring state and monitors the PDCCH scrambled by the public PUR-RNTI.

[0201] Step 940: Receive PDCCH, and receive common PUR feedback on downlink resource grant DL Grant resources scheduled by PDCCH.

[0202] In the embodiment of the present application, the terminal may receive the PDCCH and receive the common PUR feedback on the DL Grant resources scheduled by the PDCCH.

[0203] Further, based on the above application embodiment, the public PUR feedback includes at least one of the following information: terminal identification, cell radio network temporary identifier C-RNTI, terminal search space USS, uplink link resource authorization ULGrant, downlink resource authorization DL Grant, and PUR transmission end indication.

[0204] Further, based on the above application embodiment, the method further includes: when the terminal identifier in the public PUR feedback is consistent with the local terminal identifier, determining that the match is successful and the terminal identification is completed.

[0205] Specifically, when the terminal identifier in the public PUR feedback is the same as the local terminal identifier, it is determined that the terminal identification is completed.

[0206] Further, based on the above application embodiment, when the terminal identifier in the public PUR feedback is consistent with the local terminal identifier, determining that the match is successfully completed to complete the terminal identification includes at least one of the following:

[0207] If the public PUR feedback carries the PUR transmission end indication, the public PUR transmission is completed and the idle state is returned;

[0208] If the public PUR feedback carries the terminal special radio network temporary identifier C-RNTI, USS, UL Grant and / or DL ​​Grant indication, it enters the PUR USS monitoring state;

[0209] If the public PUR feedback carries the RRC connection establishment message, the RRC connection state is entered;

[0210] The public PUR feedback carries the terminal-specific radio network temporary identifier C-RNTI but does not carry the USS, and the USS is set according to the CSS configuration.

[0211] Fig.13 is a flow chart of a channel transmission method provided in an embodiment of the present application. The embodiment of the present application is applicable to the case where PUR transmission is supported in a non-terrestrial network. The method can be implemented by software and / or hardware methods and is generally integrated in a base station. Fig.13 The method provided in the embodiment of the present application specifically includes the following steps:

[0212] Step 1010: configure the public pre-configured uplink resource PUR configuration information of the terminal according to the public signaling.

[0213] In the embodiment of the present application, the base station may configure the public pre-configured PUR configuration information of the terminal through public signaling, so that the terminal may configure the PUR resources according to the public PUR configuration information.

[0214] Step 1020: Receive a PUSCH sent on a public PUR resource corresponding to the public PUR configuration information.

[0215] Specifically, the base station may receive the PUSCH sent by the terminal through the public PUR resource.

[0216] In an embodiment of the present application, the base station configures the public pre-configured uplink resource PUR configuration information of the terminal. The public PUR configuration information is transmitted from the base station to the terminal through public signaling. The base station receives PUSCH on the public PUR resources corresponding to the public PUR configuration information, thereby realizing channel transmission based on the PUR function in a non-terrestrial network, saving wireless resources, and reducing UE power consumption.

[0217] Further, based on the above application embodiment, the method further includes: sending a PDCCH scrambled by a common PUR-RNTI to a terminal to control the terminal to receive common PUR feedback; and sending common PUR feedback to the terminal on DL Grant resources.

[0218] In an embodiment of the present application, the base station can scramble the PDCCH through the public PUR-RNTI and send the PDCCH to the terminal to control the terminal to receive the public PUR feedback. After sending the PDCCH, the base station can send the public PUR feedback to the terminal on the DL Grant resources.

[0219] Further, based on the above application embodiment, the public PUR feedback includes at least one of the following information:

[0220] Terminal identification, cell radio network temporary identifier C-RNTI, terminal search space USS, uplink resource authorization UL Grant, downlink resource authorization DL Gran t, PUR transmission end indication.

[0221] In an exemplary embodiment, see Fig.14 , public PUR resource configuration and transmission may include the following steps: Step 1: The base station configures public PUR resource information to the UE through public signaling (SIB), and the public PUR resource information includes at least one of the following: public PUSCH resource configuration, PUR CSS configuration, and public PUR_RNTI.

[0222] The public PUSCH resource configuration includes at least one of the following: a time domain start position of a PUSCH resource, a period of a PUSCH resource, a frequency domain position of a PUSCH resource, physical layer scheduling information of a PUSCH resource, etc.;

[0223] The PUR CSS configuration may be RA-CSS or PUR CSS explicitly configured by the base station.

[0224] The public PUR_RNTI may be a PUR-RNTI calculated by the UE based on the time-frequency domain position of the public PUSCH resource, or a PUR-RNTI configured by the base station to the UE through signaling, or may be a certain RNTI predefined by the standard.

[0225] Step 2: If the UE has uplink transmission requirements, and the cell where the UE resides has public PUR configuration information:

[0226] For the control plane data transmission scheme, if the uplink transmission information is smaller than the TB Size that can be carried by PUSCH in the PUR configuration information, the TA is calculated based on information such as satellite positioning, and a PUSCH resource is selected in the public PUR resource information for public PUR transmission; otherwise, the PREAMBLE resource is selected to initiate the PRACH process;

[0227] For the user plane data transmission scheme, TA is calculated based on information such as satellite positioning, and a PUSCH resource is selected from the public PUR resource information for public PUR transmission; if the PUSCH resource cannot carry all user data during public PUR transmission, the remaining data segments can be transmitted on the dedicated PUSCH resources scheduled by PDCCH after Step 5 (after UE identification is successful), or on the dedicated PUSCH resources scheduled by PDCCH after the UE is switched to connected mode.

[0228] The uplink information transmission includes a UE identifier and at least user data and RRC Msg3 signaling.

[0229] The UE identifier may be a NAS UE identifier or a UE identifier allocated by the network side; the UE identifier may be included in a MAC CE or in an RRC signaling.

[0230] Step 3: After the UE sends the common PUR transmission, it shifts back n subframes to monitor the PDCCH scrambled with the common PUR_RNTI and accesses the PUR CSS monitoring state.

[0231] Step 4: UE receives PDCCH scrambled with common PUR_RNTI

[0232] Step 5: UE receives the common PURResponse on the PDCCH scheduled DL Grant resources scrambled with the common PUR_RNTI

[0233] The public PUR Response may include at least one of the following information: UE identity, UE specific C-RNTI, USS, UL Grant, DL Grant, and PUR transmission end indication.

[0234] Step 6: The UE compares the received UE ID with its own UE ID. If the match is successful, the UE completes the identification. The specific methods may include the following:

[0235] 1. If the PUR Response carries a PUR transmission end indication, the UE completes the public PUR transmission and returns to the idle state.

[0236] 2. If the PUR Response carries UE specific C-RNTI, USS, UL Grant and / or DLGrant indication, the PUR USS monitoring state is entered (the subsequent process is the same as the current PUR process and can be simply supplemented).

[0237] 3. If the PUR Response carries the RRC connection establishment message, the UE enters the RRC connected state.

[0238] 4. If the PUR Response carries the UE specific C-RNTI but does not carry the PUR USS, the PURUSS uses the configuration of the PUR CSS.

[0239] Fig.15 1 is a schematic diagram of a channel transmission device provided in an embodiment of the present application, which can execute the channel transmission method provided in any embodiment of the present application, and specifically execute the functional modules and beneficial effects corresponding to the method. The device can be implemented by software and / or hardware, and specifically includes: a configuration receiving module 11, a timing advance module 12 and a channel sending module 13.

[0240] The configuration receiving module 11 is used to receive the pre-configured uplink resource PUR configuration information configured by the base station through dedicated signaling.

[0241] The timing advance module 12 is used to determine the timing advance TA when it is determined that the PUR resource belongs to the current resident cell before the time domain position of the PUR resource corresponding to the PUR configuration information.

[0242] The channel sending module 13 is used to send a physical uplink shared channel PUSCH using the TA on the PUR resource when in a target service state, wherein the target state indicates that there is no radio resource control RRC connection with the base station.

[0243] In an embodiment of the present application, a configuration receiving module is configured to receive pre-configured uplink resource PUR configuration information configured by a base station. The PUR configuration information is transmitted through dedicated signaling. The timing advance module determines that the PUR resource belongs to the current resident cell before the time domain position of the PUR resource corresponding to the PUR configuration information, and determines the timing advance TA. When the channel sending module is in a target service state, the PUSCH is sent based on the TA on the PUR resource, thereby realizing channel transmission based on the PUR function in a non-terrestrial network, saving wireless resources, and reducing UE power consumption.

[0244] Further, in the above application embodiment, the target service state in the device includes at least one of the following: RRC_IDLE state, RRC_INACTIVE state.

[0245] Further, based on the above application embodiment, the PUR configuration information in the device includes at least one of the following:

[0246] PUR cycle, pre-configured uplink resource response time window timer PUR-ResponseWindowTimer, cell identifier, pre-configured resource uplink terminal search space PUR-USS, PUSCH resource configuration, PUSCH resource time domain start position information, PUSCH resource frequency domain position information, TA valid timer, reference signal received power RSRP change threshold, USS monitoring maximum duration, pre-configured uplink resource radio network temporary identifier PUR-RNTI, valid number of PUR resources, serving cell preamble, neighboring cell preamble, serving cell response reference signal configuration, neighboring cell response reference signal configuration, scheduling request resources, configuration authorization CG resources.

[0247] Further, based on the above application embodiment, the PUR resource configuration information in the device includes PUR resource lists of at least two cells, and each of the PUR resource lists includes at least one of the following information:

[0248] PUR resource public configuration part, PUR resource cell level configuration part, wherein the PUR resource public configuration part includes at least one of the following: PUR cycle, PUR response time window timer Pur-ResponseWindowTimer, the PUR resource cell level configuration part includes at least one of the following: cell identification, pre-configured resource uplink terminal search space PUR-USS, PUSCH resource configuration, PUSCH resource time domain start position information, PUSCH resource frequency domain position information, TA effective timer, RSRP change threshold, USS monitoring maximum duration, pre-configured resource uplink radio network temporary identifier PUR-RNTI, and the number of valid PUR resources.

[0249] Further, based on the above application embodiment, the time domain location information of the PUSCH resource in the device is represented by at least one of the following methods:

[0250] Absolute time expressed according to satellite clocks;

[0251] The absolute time according to the satellite clock and the relative time synchronized with the base station wirelessly are expressed together.

[0252] Further, based on the above application embodiment, the timing advance module 12 includes:

[0253] The historical information unit is used to obtain the TA according to the historical TA record information, wherein the validity of the historical TA record information is determined by the TA validity timer and / or the RSRP change threshold.

[0254] The satellite determination unit obtains TA according to the satellite positioning information.

[0255] Further, based on the above application embodiment, the TA valid timer in the device is configured in at least one of the following ways:

[0256] Configure the TA valid timer according to the UE;

[0257] Configure the TA valid timer at the PUR cell level.

[0258] Fig.16 1 is a schematic diagram of a channel transmission device provided in an embodiment of the present application, which can execute the channel transmission method provided in any embodiment of the present application, and specifically execute the corresponding functional modules and beneficial effects of the method. The device can be implemented by software and / or hardware, and specifically includes: an information configuration module 21 and a channel receiving module 22.

[0259] The information configuration module 21 is used to configure the pre-configured uplink resource PUR configuration information of the terminal through dedicated signaling.

[0260] The channel receiving module 22 is used to receive a physical uplink shared channel PUSCH transmitted on the PUR resource corresponding to the PUR configuration information.

[0261] In an embodiment of the present application, an information configuration module configures the PUR configuration information of the terminal based on dedicated signaling, and a channel receiving module receives the PUSCH transmitted on the PUR resources corresponding to the PUR configuration information, thereby realizing channel transmission based on the PUR function in a non-terrestrial network, saving wireless resources, and reducing UE power consumption.

[0262] Further, based on the above application embodiment, the PUR configuration information in the device includes at least one of the following:

[0263] Pre-configured uplink resource response time window timer PUR-ResponseWindowTimer, cell number, pre-configured resource uplink synchronization signal PUR-USS, PUSCH resource configuration, PUR period, PUSCH resource time domain start position information, PUSCH resource frequency domain position information, TA valid timer, reference signal received power RSRP change threshold, USS monitoring maximum duration, pre-configured uplink resource radio network temporary identifier PUR-RNTI, valid number of PUR resources, serving cell preamble, neighbor cell preamble, serving cell response reference signal configuration, neighbor cell response reference signal configuration, scheduling request resources, configuration authorization CG resources.

[0264] Further, based on the above application embodiment, the PUR resource configuration information in the device includes PUR resource lists of at least two cells, and each of the PUR resource lists includes at least one of the following information:

[0265] PUR resource public configuration part, PUR resource cell level configuration part, wherein the PUR resource public configuration part includes at least one of the following: PUR cycle, PUR response time window timer Pur-ResponseWindowTimer, the PUR resource cell level configuration part includes at least one of the following: cell identification, pre-configured resource uplink terminal search space PUR-USS, PUSCH resource configuration, PUSCH resource time domain start position information, PUSCH resource frequency domain position information, TA effective timer, RSRP change threshold, USS monitoring maximum duration, pre-configured resource uplink radio network temporary identifier PUR-RNTI, and the number of valid PUR resources.

[0266] Further, based on the above application embodiment, the frequency domain location information of the PUSCH resource in the device is represented by at least one of the following methods:

[0267] Absolute time expressed according to satellite clocks;

[0268] The absolute time according to the satellite clock and the relative time synchronized with the terminal wirelessly are expressed together.

[0269] Further, based on the above application embodiment, the TA valid timer in the device is configured in at least one of the following ways:

[0270] Configure the TA valid timer according to the UE;

[0271] Configure the TA valid timer at the PUR cell level.

[0272] Further, based on the above application embodiment, the device also includes:

[0273] The resource configuration module is used to determine the target resident cell according to at least one of the terminal time domain position, the terminal movement trajectory, and the cell movement trajectory, and configure PUR resources.

[0274] The resource sending module is used to send the PUR resource to the terminal through the cell where the terminal currently resides.

[0275] Further, based on the above application embodiment, the device also includes:

[0276] The target determination module is used to determine the target base station of the terminal according to at least one of the terminal time domain position, the terminal movement trajectory, and the cell movement trajectory.

[0277] The resource forwarding module is used to receive the PUR resources configured by the target base station and send the PUR resources to the terminal.

[0278] Further, based on the above application embodiment, the device also includes:

[0279] The resource request module is used for the base station centralized unit CU to request PUR resources from the base station distributed unit DU through a PUR resource request.

[0280] The resource sending module is used for the DU to configure PUR resources according to the PUR resource request and send the PUR resources to the CU.

[0281] Further, based on the above application embodiment, the PUR resource request in the device includes at least one of the following information:

[0282] Target cell identification information, message size of PUR resources, PUSCH resource time domain start position, PUSCH resource period, terminal location information, terminal movement trajectory information, and current resident cell location information.

[0283] Further, based on the above application embodiment, the device also includes:

[0284] A resource release module, configured for the CU to send a PUR resource release indication to the DU to release the PUR resource, wherein the PUR release indication includes at least one of the following:

[0285] The identification information of the target cell, the time domain and / or frequency domain location of the PUR resources, the PUSCH resource period, and the terminal location information.

[0286] Further, based on the above-mentioned application embodiment, the DU in the device stores the time domain information and frequency domain information of the PUR resources, and the CU stores the security key and AS context information configured by the PUR.

[0287] Fig.17 It is a structural diagram of another timing advance updating device provided in an embodiment of the present application, which can execute the channel transmission method provided in any embodiment of the present application, and specifically execute the functional modules and beneficial effects corresponding to the method. The device can be implemented by software and / or hardware, and specifically includes: a timing advance updating module 31, which is used to update the timing advance of the PUR resource according to the received random access response message.

[0288] Further, based on the above application embodiment, the timing advance updating module 31 includes:

[0289] The restart unit is used to restart the TA validity timer of the PUR resource when receiving a random access response message carrying a TAC command.

[0290] Further, based on the above application embodiment, the timing advance updating module 31 includes:

[0291] The random access unit is used to receive a random access response message and start a random access contention resolution process.

[0292] The first updating unit is configured to restart a TA timer corresponding to a PUR when contention resolution is successful during the random access process.

[0293] Further, based on the above application embodiment, the timing advance updating module 31 includes:

[0294] The second access response unit is used to receive a random access response message, temporarily record an NTA value before the random access response message, and initialize a TA timer.

[0295] The second updating unit is used to set the NTA value to the NTA value before the temporarily recorded random access response message if the contention resolution fails, delete the NTA value before the temporarily recorded random access response message if the contention resolution succeeds, and set the PUR-TA timer to the value of the TA timer.

[0296] Further, based on the above application embodiment, the predetermined advance update module 31 includes:

[0297] The third access response unit is used to receive a random access response message, and record the NTA value before the random access response message and the value of the PUR-TA timer.

[0298] The timing restart unit is used to restart the TA timer and the PUR-TA timer.

[0299] The third updating unit is used to restore the NTA value to the NTA value before the temporary recorded random access response message and to reassign the PUR-TA timer to the sum of the TA timer value and the recorded PUR-TA timer value if the contention resolution fails; if the contention resolution is successful, delete the NTA value before the recorded random access response message and the value of the PUR-TA timer.

[0300] Fig.18 1 is a schematic diagram of a channel transmission device provided in an embodiment of the present application, which can execute the channel transmission method provided in any embodiment of the present application, and specifically execute the corresponding functional modules and beneficial effects of the method. The device can be implemented by software and / or hardware, and specifically includes: a public configuration acquisition module 41 and a public resource use module 42.

[0301] The public configuration acquisition module 41 is used to acquire the public pre-configured uplink resource PUR configuration information configured by the base station through public signaling.

[0302] The public resource using module 42 is used to determine a timing advance TA, and send a PUSCH on the public PUR resources corresponding to the public PUR configuration information according to the TA.

[0303] In an embodiment of the present application, a public configuration acquisition module receives public pre-configured uplink resource PUR configuration information configured by a base station. The public PUR configuration information is transmitted through public signaling. A public resource usage module determines a timing advance TA, and sends a PUSCH based on the TA on the PUR resources, thereby realizing channel transmission based on the PUR function in a non-terrestrial network, saving wireless resources, and reducing UE power consumption.

[0304] Further, based on the above application embodiment, the public resource use module 42 includes:

[0305] The satellite determination unit is used to determine the TA based on satellite positioning.

[0306] Further, based on the above application embodiment, the public resource use module 42 includes:

[0307] The first transmission unit is configured to determine the TA according to satellite positioning when the uplink transmission information is smaller than the transmission block size of the PUSCH of the public PUR configuration information, and select a PUSCH resource in the public PUR resource for transmission.

[0308] The second transmission unit is configured to select a preamble resource to initiate a random access process when the uplink transmission information is greater than or equal to the transmission block size of the PUSCH of the common PUR configuration information.

[0309] Further, based on the above application embodiment, the public resource use module 42 includes:

[0310] The resource transmission unit is used to determine the TA according to the satellite positioning and select the PUSCH resource from the public PUR resource for transmission.

[0311] Further, based on the above application embodiment, the device also includes:

[0312] A monitoring module, used to monitor the PDCCH scrambled by the common PUR-RNTI and access the PUR CSS monitoring status;

[0313] The feedback receiving module is used to receive the PDCCH and receive a common PUR feedback on a downlink resource grant DL Grant resource scheduled by the PDCCH.

[0314] Further, based on the above application embodiment, the public PUR feedback in the device includes at least one of the following information:

[0315] Terminal identification, cell radio network temporary identifier C-RNTI, terminal search space USS, uplink resource authorization UL Grant, downlink resource authorization DL Gran t, PUR transmission end indication.

[0316] Further, based on the above application embodiment, the device also includes:

[0317] The terminal identification module is used to determine that the terminal identification is successfully completed if the terminal identification in the public PUR feedback is consistent with the local terminal identification.

[0318] Further, based on the above-mentioned application embodiment, the terminal identification module is specifically used for: if the public PUR feedback carries a PUR transmission end indication, the public PUR transmission is completed and the idle state is returned; if the public PUR feedback carries a terminal special wireless network temporary identifier C-RNTI, USS, UL Grant and / or DL ​​Grant indication, the PURUSS monitoring state is entered; if the public PUR feedback carries an RRC connection establishment message, the RRC connection state is entered; if the public PUR feedback carries a terminal special wireless network temporary identifier C-RNTI and does not carry USS, the USS is set according to the CSS configuration.

[0319] Fig.19 1 is a schematic diagram of the structure of another channel transmission device provided in an embodiment of the present application, which can execute the channel transmission method provided in any embodiment of the present application, and specifically execute the corresponding functional modules and beneficial effects of the method. The device can be implemented by software and / or hardware, and specifically includes: a public configuration module 51 and a public resource module 52.

[0320] The public configuration module 51 is used to configure the public pre-configured uplink resource PUR configuration information of the terminal according to the public signaling.

[0321] The public resource module 52 is configured to receive a PUSCH sent on a public PUR resource corresponding to the public PUR configuration information.

[0322] In an embodiment of the present application, the public pre-configured uplink resource PUR configuration information of the terminal is configured through a public configuration module. The public PUR configuration information is transmitted from the base station to the terminal through public signaling. The public resource module receives PUSCH on the public PUR resources corresponding to the public PUR configuration information, thereby realizing channel transmission based on the PUR function in a non-terrestrial network, saving wireless resources, and reducing UE power consumption.

[0323] Further, based on the above application embodiment, the device also includes:

[0324] The control channel unit is used to send a PDCCH scrambled by a common PUR-RNTI to a terminal to control the terminal to receive common PUR feedback.

[0325] The common feedback unit is used to send a common PUR feedback to the terminal on the DL Grant resources.

[0326] Further, based on the above application embodiment, the public PUR feedback in the device includes at least one of the following information:

[0327] Terminal identification, cell radio network temporary identifier C-RNTI, terminal search space USS, uplink resource authorization UL Grant, downlink resource authorization DL Gran t, PUR transmission end indication.

[0328] Fig. 20 6 is a schematic diagram of a terminal structure provided in an embodiment of the present application. The terminal includes a processor 60, a memory 61, an input device 62 and an output device 63. The number of processors 60 in the terminal may be one or more. Fig. 20 In the example, a processor 60 is used; the processor 60, the memory 61, the input device 62 and the output device 63 in the terminal can be connected by a bus or other means. Fig. 20 The example of connecting through bus is taken in the following.

[0329] The memory 61, as a computer-readable storage medium, can be used to store software programs, computer executable programs and modules, such as the modules corresponding to the channel transmission device in the embodiment of the present application (configuration receiving module 11, timing advance module 12 and channel transmission module 13, as well as public configuration acquisition module 41 and public resource use module 42). The processor 60 executes various functional applications and data processing of the terminal by running the software programs, instructions and modules stored in the memory 61, that is, realizing the above-mentioned channel transmission method.

[0330] The memory 61 may mainly include a program storage area and a data storage area, wherein 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 created according to the use of the terminal, etc. In addition, the memory 61 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 61 may further include a memory remotely arranged relative to the processor 60, and these remote memories may be connected to the terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0331] The input device 62 may be used to receive input digital or character information and generate key signal input related to user settings and function control of the terminal. The output device 63 may include a display device such as a display screen.

[0332] Further, the terminal may also store the timing advance update module 31 in the timing advance update device in the embodiment of the present application and implement the timing advance update module 31 in the embodiment of the present application.

[0333] Fig.217 is a schematic diagram of a structure of a base station provided in an embodiment of the present application. The base station includes a processor 70, a memory 71, an input device 72 and an output device 73. The number of processors 70 in the base station may be one or more. Fig. 20 A processor 70 is taken as an example; the processor 70, the memory 71, the input device 72 and the output device 73 in the base station can be connected by a bus or other means. Fig. 20 The example of connecting through bus is taken in the following.

[0334] The memory 71, as a computer-readable storage medium, can be used to store software programs, computer executable programs and modules, such as the modules corresponding to the channel transmission device in the embodiment of the present application (information configuration module 21 and channel receiving module 22, as well as public configuration module 51 and public resource module 52). The processor 70 executes various functional applications and data processing of the base station by running the software programs, instructions and modules stored in the memory 71, that is, implements the above-mentioned channel transmission method.

[0335] The memory 71 may mainly include a program storage area and a data storage area, wherein 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 created according to the use of the base station, etc. In addition, the memory 71 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 71 may further include a memory remotely arranged relative to the processor 70, and these remote memories may be connected to the base station via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0336] The input device 72 may be used to receive input digital or character information and generate key signal input related to user settings and function control of the base station. The output device 73 may include display devices such as a display screen.

[0337] The embodiment of the present application further provides a storage medium containing computer executable instructions, wherein the computer executable instructions are used to execute a channel transmission method when executed by a computer processor, the method comprising:

[0338] Receiving pre-configured uplink resource PUR configuration information configured by the base station through dedicated signaling;

[0339] In a case where it is determined that the PUR resource belongs to the current resident cell before the time domain position of the PUR resource corresponding to the PUR configuration information, determining a timing advance TA;

[0340] When in a target service state, a physical uplink shared channel PUSCH is sent using the TA on the PUR resources, wherein the target state indicates that there is no radio resource control RRC connection with the base station.

[0341] or,

[0342] Configure the terminal's pre-configured uplink resource PUR configuration information through dedicated signaling;

[0343] A physical uplink shared channel PUSCH transmitted on the PUR resource corresponding to the PUR configuration information is received.

[0344] Through the above description of the implementation method, the technicians in the relevant field can clearly understand that the present invention can be implemented by means of software and necessary general hardware, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0345] It is worth noting that in the embodiment of the above-mentioned channel transmission device, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application.

[0346] Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

[0347] In hardware implementation, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed by several physical components in cooperation. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or temporary medium). As known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0348] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but the scope of the present invention is not limited thereby. Any modification, equivalent substitution and improvement made by those skilled in the art without departing from the scope and essence of the present invention shall be within the scope of the present invention.

Claims

1. A method for updating a timing advance TA of a pre-configured uplink resource PUR, applied to a user equipment UE, comprising: receiving a random access response message, temporarily recording a timing advance value NTA before the random access response message, and starting or restarting a TA timer; as well as If the random access contention resolution fails, the timing advance value is set to the timing advance value NTA before the random access response message temporarily recorded; If the random access contention resolution is successful, the temporarily recorded timing advance value NTA before the random access response message is deleted, and the PUR-TA timer is set to the value of the TA timer.

2. The method according to claim 1, comprising: If the random access contention resolution fails, the PUR-TA timer is not restarted.

3. The method according to any one of claims 1 to 2, comprising: In response to receiving the random access response message, the PUR-TA timer is not restarted.

4. The method according to any one of claims 1 to 2, wherein the UE is configured with dedicated PUR resources.

5. The method according to claim 1, wherein the UE is configured with the PUR-TA timer.

6. A user equipment UE, comprising one or more processors; as well as a memory configured to store one or more programs; wherein the one or more programs, when executed by the one or more processors, cause the one or more processors to perform: receiving a random access response message, temporarily recording a timing advance value NTA before the random access response message, and starting or restarting a TA timer; as well as If the random access contention resolution fails, the timing advance value is set to the timing advance value NTA before the random access response message temporarily recorded; If the random access contention resolution is successful, the temporarily recorded timing advance value NTA before the random access response message is deleted, and the PUR-TA timer is set to the value of the TA timer.

7. The UE according to claim 6, wherein the one or more processors are further configured to execute: If the random access contention resolution fails, the PUR-TA timer is not restarted.

8. The UE according to any one of claims 6 to 7, wherein the one or more processors are further configured to execute: In response to receiving the random access response message, the PUR-TA timer is not restarted.

9. The UE according to any one of claims 6 to 7, wherein the UE is configured with dedicated PUR resources.

10. The UE according to claim 6, wherein the UE is configured with the PUR-TA timer.

11. A computer-readable storage medium having a computer program stored thereon, wherein the computer program implements the timing advance updating method according to any one of claims 1 to 5 when executed by a processor.

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