CN115052332B

CN115052332B - Signal transmission method, device and storage medium

Info

Publication number: CN115052332B
Application number: CN202110252191.0A
Authority: CN
Inventors: 汤文
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-03-08
Filing date: 2021-03-08
Publication date: 2024-05-07
Anticipated expiration: 2041-03-08
Also published as: CN115052332A

Abstract

The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, and a storage medium. The method comprises the following steps: transmitting timing indication information corresponding to the current timing advance TA to the network equipment; receiving a time sequence offset value sent by network equipment; and sending an uplink signal to network equipment according to the current TA and the time sequence offset value. The method, the device and the storage medium provided by the embodiment of the application not only ensure the accuracy of TA related time sequence scheduling, but also ensure that the influence of TA change on uplink signal transmission is minimized, thereby ensuring the accuracy of uplink signal transmission, effectively saving resources and improving communication quality.

Description

Signal transmission method, device and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a signal transmission method, a signal transmission device, and a storage medium.

Background

In NTN (Non-TERRESTRIAL NETWORKS, NTN, non-terrestrial network, also called satellite communication network) systems, due to the distance between UE (User Equipment) and satellite, the delay of corresponding signal transmission also changes.

This situation causes that the timing advance (TIME ADVANCE, TA) of the UE for uplink signal transmission and the timing sequence of the scheduling related to TA between uplink and downlink also change, which is not beneficial to the control of the network on the timing of the uplink signal of the user.

In addition, considering that the radius of the cell in the NTN system is large, if the adjustment of the timing and timing relationship is performed according to the prior art, that is, according to the maximum distance from the UE to the satellite (reference point) in the cell, a large amount of resources are wasted for most UEs in the cell.

Disclosure of Invention

The embodiment of the application provides a signal transmission method, a signal transmission device and a storage medium, which are used for solving the defect of resource waste caused by inaccurate related scheduling of uplink TA of UE in the prior art.

In a first aspect, an embodiment of the present application provides a signal transmission method, including:

transmitting timing indication information corresponding to the current timing advance TA to the network equipment;

receiving a time sequence offset value sent by network equipment;

sending an uplink signal to network equipment according to the current TA and the time sequence offset value;

wherein the timing offset value is determined by the network device according to the timing indication information.

Optionally, the sending timing indication information corresponding to the current TA to the network device includes:

and sending timing indication information corresponding to the current TA to the network equipment according to a preset period.

Transmitting timing indication information corresponding to the current TA to network equipment under the condition that the variation of the current TA compared with the target TA exceeds a preset threshold value;

wherein the target TA comprises any one of the following:

A predetermined TA;

a TA determined prior to determining the current TA;

And the corresponding TA is when the terminal is initially accessed to the network.

And sending timing indication information corresponding to the current TA to network equipment under the condition that the value interval to which the current TA belongs is different from the value interval to which the previous TA belongs.

Optionally, the timing indication information corresponds to a value interval corresponding to the current TA.

Optionally, the current TA corresponds to a value interval, and each value interval corresponds to different timing indication information.

Optionally, the timing indication information corresponds to a change interval corresponding to a change amount of the current TA compared to the target TA.

Optionally, the current TA corresponds to a change interval compared with the change amount of the target TA, and each change interval corresponds to different timing indication information.

Optionally, the boundary value of the value interval is determined by at least one of the following ways:

configuring according to the indication information of the network;

determining according to the relative position change rate of the terminal and the satellite;

And determining according to the cell radius.

Optionally, the timing indication information includes a number of bits;

The number of bits is determined by at least one of:

configuring according to the indication information of the network;

And determining according to the cell radius.

Optionally, the method further comprises:

receiving a target resource configured by a network according to the preset period;

the target resource is used for sending timing indication information corresponding to the current TA to the network equipment.

Optionally, the method further comprises any one of the following:

Receiving a target resource with a preset size configured by a network;

Receiving the allocated target resource after the network is unavailable in the last target resource;

In a second aspect, an embodiment of the present application provides a signal transmission method, including:

Receiving timing indication information corresponding to the current timing advance TA sent by a terminal;

determining a time sequence offset value according to the timing indication information, and sending the time sequence offset value to the terminal;

receiving an uplink signal sent by a terminal;

The uplink signal is sent by the terminal according to the current TA and the time sequence offset value.

Optionally, the timing indication information sent by the receiving terminal and corresponding to the current TA includes:

And receiving timing indication information corresponding to the current TA sent by the terminal according to a preset period.

Receiving timing indication information corresponding to the current TA sent by the terminal under the condition that the variation of the current TA compared with the target TA exceeds a preset threshold value;

wherein the target TA comprises any one of the following:

A predetermined TA;

a TA determined prior to determining the current TA;

And receiving timing indication information corresponding to the current TA sent by the terminal under the condition that the value interval to which the current TA belongs is different from the value interval to which the previous TA belongs.

configuring according to the indication information of the network;

And determining according to the cell radius.

Optionally, the timing indication information includes a number of bits;

The number of bits is determined by at least one of:

configuring according to the indication information of the network;

And determining according to the cell radius.

Optionally, the method further comprises:

According to the preset period, sending target resources to the terminal;

the target resource is used for the terminal to send timing indication information corresponding to the current TA.

Optionally, the method further comprises any one of the following:

Transmitting a target resource of a predetermined size to the terminal;

after the last target resource is unavailable, sending the target resource to the terminal;

In a third aspect, an embodiment of the present application provides a terminal, including a memory, a transceiver, and a processor;

A memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

receiving a time sequence offset value sent by network equipment;

Optionally, the processor is specifically configured to perform the following operations:

wherein the target TA comprises any one of the following:

A predetermined TA;

a TA determined prior to determining the current TA;

configuring according to the indication information of the network;

And determining according to the cell radius.

Optionally, the timing indication information includes a number of bits;

The number of bits is determined by at least one of:

configuring according to the indication information of the network;

And determining according to the cell radius.

Optionally, the processor is further configured to:

Optionally, the processor is further configured to perform any of the following operations:

Receiving a target resource with a preset size configured by a network;

In a fourth aspect, an embodiment of the present application provides a network device, including a memory, a transceiver, and a processor;

receiving an uplink signal sent by a terminal;

wherein the target TA comprises any one of the following:

A predetermined TA;

a TA determined prior to determining the current TA;

and receiving timing indication information corresponding to the current TA, which is sent by the terminal in the condition that the value interval to which the current TA belongs is different from the value interval to which the previous TA belongs.

configuring according to the indication information of the network;

And determining according to the cell radius.

Optionally, the timing indication information includes a number of bits;

The number of bits is determined by at least one of:

configuring according to the indication information of the network;

And determining according to the cell radius.

Optionally, the processor is further configured to:

According to the preset period, sending target resources to the terminal;

Transmitting a target resource of a predetermined size to the terminal;

Wherein the target resource is used for the terminal to send timing indication information corresponding to the current TA

In a fifth aspect, an embodiment of the present application provides a signal transmission device, applied to a terminal, including:

the TA transmitting module is used for transmitting timing indication information corresponding to the current timing advance TA to the network equipment;

the TA receiving module is used for receiving the time sequence offset value sent by the network equipment;

A signal sending module, configured to send an uplink signal to a network device according to the current TA and the timing offset value;

In a sixth aspect, an embodiment of the present application provides a signal transmission apparatus, applied to a network device, including:

the TA receiving module is used for receiving timing indication information which is sent by the terminal and corresponds to the current timing advance TA;

The offset value updating module is used for determining a time sequence offset value according to the timing indication information and sending the time sequence offset value to the terminal;

the signal receiving module is used for receiving an uplink signal sent by the terminal;

In a seventh aspect, an embodiment of the present application provides a processor-readable storage medium storing a computer program for causing the processor to execute the signal transmission method provided in the first aspect or the second aspect.

The signal transmission method, the signal transmission device and the storage medium provided by the embodiment of the application ensure the accuracy of TA-related time sequence scheduling, minimize the influence of TA variation on uplink signal transmission, ensure the accuracy of uplink signal transmission, effectively save resources and improve communication quality because the time sequence offset value is determined according to the real-time TA and the actual transmission opportunity determined according to the time sequence offset value.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of NTN delay;

FIG. 2 is a diagram of a downlink scheduling sequence;

FIG. 3 is a diagram of an uplink scheduling timing sequence;

fig. 4 is a schematic diagram of a change in the distance between a terminal and a satellite in NTN;

fig. 5 is a schematic flow chart of a signal transmission method according to an embodiment of the application;

FIG. 6 is a second flow chart of a signal transmission method according to an embodiment of the application;

Fig. 7 is a schematic structural view of a terminal according to an embodiment of the present application;

Fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 9 is a schematic structural view of a signal transmission device applied to a terminal according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a signal transmission device applied to a network device according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the embodiment of the application, the term "and/or" describes the association relation of the association objects, which means that three relations can exist, for example, a and/or B can be expressed as follows: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The term "plurality" in embodiments of the present application means two or more, and other adjectives are similar.

In order to facilitate understanding of the technical solution of the present application, the following will be described:

In NTN, there are two modes of operation, one is the elbow mode: the satellite only forwards the signal, does no processing, and the terminal and the network equipment (such as a base station) communicate; the other is a regenerative communication mode: the satellite can detect the information of the received signals and process and forward the information to finish the functions of the network equipment, and connect the terminal and the network equipment.

In NTN, the connection of the terminal to the satellite is called a subscriber link and the connection of the satellite to the network device is called a feeder link, as shown in fig. 1.

For the pipe bending communication, the terminal may experience a transmission delay T1 of a user link and a transmission delay T2 of a feeder link when in data communication with the network device, and RTT (Round Trip Time) of the transmission is 2× (t1+t2). In the regenerative communication mode, the transmission delays of the terminal and the satellite include a transmission delay T1 of the user link, and RTT of the transmission is 2×t1.

In the uplink and downlink time schedule of NTN, in order to ensure stable operation of time sequence, the network side needs to consider uplink TA of the terminal and processing time of the terminal when scheduling uplink and downlink data transmission.

Unlike terrestrial mobile communication, the TA value of satellite communication is relatively large, and in order to ensure the reliability of the time sequence, the network side needs to add an offset value on the basis of notifying the scheduling time sequence value of the terminal. This offset value needs to be larger than the TA at this time to ensure that the uplink transmission of the terminal is performed after a processing delay after the downlink reception.

As shown in fig. 2, the network side sends PDCCH (Physical Downlink Control Channel ) at time T0, and the terminal receives PDSCH (Physical Downlink SHARED CHANNEL ) at time t0+t_d+k0; where K0 represents an interval between PDCCH and PDSCH configured on the network side, and t_d is a network side-to-terminal transmission delay.

Meanwhile, the moment of the network side appointed PUCCH feedback HARQ-ACK is the K1 moment after receiving PDSCH. The scheduled transmission time of PUCCH is t0+t_d+k0+k1+offset1 (offset value) considering the TA of the terminal, while the transmission time after TA is actually considered to be t0+t_d+k0+k1+offset1-TA; the TA is based on the actual TA compensation algorithm, and if absolute TA compensation is used, TA is equal to 2×t_d.

Accordingly, as shown in fig. 3, the scheduled transmission time of PUSCH is t0+t_d+k2+offset2 (offset value), and the transmission time after TA is actually considered to be t0+t_d+k2+offset2-TA.

In addition, as the IoT (Internet of Things ) mainly adopts a repeated transmission technology to enhance coverage, the terminal is generally static or moves at a low speed, the position of the base station is also fixed, the repeated transmission lasts longer, the TA in the uplink transmission scheme changes relatively less, and the TA in the uplink transmission scheme adopts the same value during the repeated transmission. Thus, analysis of the problem may be more apparent with IoT systems.

In NTN, due to the movement of the non-synchronous orbit satellite relative to the terminal, when the terminal performs uplink data transmission, the distance between the terminal and the satellite corresponding to different transmission moments of the terminal changes (D1 is not equal to D2), and fig. 4 is referred to for a specific schematic diagram.

Accordingly, the actual transmission delay of the signal received by the gateway station (transparent forwarding satellite) or the satellite receiver (regenerative satellite) is different in each repeated transmission, and if a scheme of adopting the same TA or the same uplink and downlink scheduling timing offset value during transmission is adopted, the problem that intersymbol interference or resource waste exists in the terminal data received by the receiver may be caused, so that the receiving performance is reduced.

Considering that the low orbit satellite LEO (Low Earth Orbit) has a height of 600/1200 km, the satellite moving speed is about 7.6km/s, and at this time, the distance between the terminal and the satellite can be changed to reach 7km/s. Assuming that the uplink transmission duration is 10ms, as the satellite moves continuously, the distance between the corresponding terminal and the satellite changes, i.e. D2-D1, to 70km, and the round trip time between the terminal and the satellite changes=2x70/(3 x 10 x 5) =0.46 us.

Taking uplink transmission of NB-IoT (Narrow Band Internet of Things ) as an example under a frequency division duplex FDD mechanism, the maximum number of repeated transmission is 128, when the LEO height is 600/1200 km, the satellite moving speed is about 7.6km/s, and the transmission time length required by the maximum number of repeated transmission causes the change of the transmission delay of the terminal, and the specific result is shown in the following table 1. In the HD-FDD mechanism, the results are different due to the uplink transmission interval, and the specific results are shown in table 2 below.

Table 1 under FDD mechanism, terminal transmission delay variation at NB-IoT different subcarrier configurations

TABLE 2 variation of terminal propagation delay for NB-IoT different subcarrier configurations under HD-FDD mechanism

In NTN, the accuracy of data transmission and reception will be affected if no adjustment is adopted due to the problem of data interference in uplink transmission caused by satellite movement.

In addition, in the uplink and downlink time schedule of NTN, if the maximum round trip time or the maximum difference TA in the cell is selected as the offset value in order to ensure the stable operation of the time schedule, the resource waste of the time corresponding to (offset value-TA) will result, and when the radius of the cell is larger, the time difference between the maximum RTT and the minimum RTT in the cell corresponding to the maximum upper value is not negligible.

Fig. 5 is a schematic flow chart of a signal transmission method according to an embodiment of the application; referring to fig. 5, an embodiment of the present application provides a signal transmission method, which may include:

step 510, sending timing indication information corresponding to the current timing advance TA to the network device;

Step 520, receiving a timing offset value sent by the network device;

Step 530, sending an uplink signal to the network device according to the current TA and the timing offset value;

wherein the timing offset value is determined by the network device based on the timing indication information.

It should be noted that, the execution body of the above method may be a terminal, for example, a Mobile phone, a tablet Computer (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side device called a notebook, a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), a palm Computer, a netbook, an ultra-Mobile Personal Computer (Mobile Personal Computer, UMPC), a Mobile internet device (Mobile INTERNET DEVICE, MID), a wearable device (Wearable Device) or a vehicle-mounted device (VUE), a pedestrian terminal (PUE), and the embodiment of the present application is not limited to a specific type of terminal.

The technical scheme of the application is described in detail below by taking the terminal to execute the method as an example.

First, the terminal may transmit timing indication information corresponding to the current TA to the network device. The network-side device may be, for example, a base station or a core network.

Optionally, after the terminal enters the connected state, the terminal may receive ephemeris information of the network device, and calculate the TA from the current terminal to the satellite (reference point) according to the ephemeris information and GNSS (Global Navigation SATELLITE SYSTEM ) information of the terminal itself.

After determining the current TA, the terminal may determine timing indication information corresponding to the current TA and send the timing indication information to the network device.

After receiving the timing indication information, the network device may determine a corresponding timing offset value according to the timing indication information, and send the timing offset value to the terminal.

After receiving the timing offset value, the terminal can determine the timing of actually sending the uplink signal according to the timing offset value and combining with the current TA.

For example, assuming that the timing of the network for transmitting the uplink signal configured by the base station is T0 and the timing Offset value is Offset, the terminal actually transmits the uplink signal at a timing t1=t0+offset-TA.

After determining the time for actually sending the uplink signal, the terminal can send the uplink signal to the network device when the time arrives.

The signal transmission method provided by the embodiment of the application ensures the accuracy of TA-related time sequence scheduling, ensures the minimum influence of TA change on uplink signal transmission, ensures the accuracy of uplink signal transmission, effectively saves resources and improves communication quality because the time sequence offset value is determined according to the real-time TA and the actual transmission time determined by the time sequence offset value.

In one embodiment, sending timing indication information corresponding to the current TA to the network device may include:

And sending timing indication information corresponding to the current TA to the network equipment according to the preset period.

The specific size of the predetermined period may be, for example, 2min, 5min, 1h, etc., and the specific size thereof may be adjusted according to practical situations, which is not particularly limited in the embodiment of the present application.

The terminal may send timing indication information corresponding to the current TA to the network device according to a predetermined period, so as to implement updating of the periodically reporting trigger timing schedule.

The terminal periodically reports the timing indication information, which is particularly suitable for scenes with small relative change of the positions of the terminal and the satellite, such as GEO (Geostationary Earth Orbit, geosynchronous orbit) system scenes, and the like. In the GEO system scenario, where the terminal-to-satellite (reference point) distance varies relatively slowly, the network may be configured for a reasonable length of time as a predetermined period.

Under the condition that the variation of the current TA compared with the target TA exceeds a preset threshold value, timing indication information corresponding to the current TA is sent to network equipment;

the target TA may include any of the following:

The predetermined TA, for example, the network may be preconfigured with the size of the predetermined TA, for example, 0.2us, 0.4us, etc., and the size of the predetermined TA may be adjusted according to the actual scenario, which is not limited in particular by the embodiment of the present application.

A TA determined prior to determining the current TA; the TA determined last time by the terminal may be used as the target TA, or a specific one of the historical TAs determined by the terminal may be used as the target TA.

The corresponding TA when the terminal is initially accessed to the network; the TA corresponding to the initial access of the terminal to the network may be used as the target TA within a certain period of time, for example, within 1 day.

And when the terminal determines that the variation of the current TA compared with the target TA exceeds a preset threshold value, the terminal can send timing indication information to the network equipment.

The size of the predetermined threshold value may be, for example, 0.1us, 0.3us, etc., and the specific size thereof may be adjusted according to practical situations, which is not limited in particular by the embodiment of the present application.

The predetermined threshold value may be set by default, or may be dynamically configured by the network through indication information, such as RRC (Radio Resource Control ) signaling, etc.

The timing indication information is reported by the terminal when the TA changes beyond a preset threshold value, and the timing indication information is particularly suitable for scenes with relatively quick changes of the positions of the terminal and the satellite, such as LEO system scenes and the like.

And sending timing indication information corresponding to the current TA to the network equipment under the condition that the value interval to which the current TA belongs is different from the value interval to which the previous TA belongs.

For example, when the current TA has a size of 0.2us, it belongs to a first value interval (0.1 us,0.3 us), and the last TA has a size of 0.4us, which belongs to a second value interval (0.3 us,0.5 us).

The terminal reports the time indication information in the value interval of the current TA and the value interval of the last TA, which is different from the value interval of the current TA, and is particularly suitable for scenes with relatively quick position changes of the terminal and the satellite, such as LEO system scenes and the like.

According to the signal transmission method provided by the embodiment of the application, the terminal is triggered to report the timing indication information to the network equipment in the various modes, so that the network equipment can update the time sequence offset value under various conditions, and the accuracy and the stability of uplink signal transmission are further ensured.

In one embodiment, the timing indication information may correspond to a value interval corresponding to the current TA.

Alternatively, the current TA may correspond to one value interval, and each value interval corresponds to different timing indication information.

For example, the value intervals may be (ta_1, ta_2], (ta_2, ta_3], (ta_3, ta_4), etc., and the timing instruction information corresponding to each value interval may be information 1, information 2, information 3, etc.

The corresponding relation between the value interval and the timing indication information can be shown in the following table:

Table 3 corresponding relation table of value interval and timing indication information

The value interval to which TA belongs	Timing indication information for reporting
		(TA_1,TA_2]	Information 1
(TA_2，TA_3]	Information 2
		(TA_3，TA_4]	Information 3
……	……

When the timing indication information corresponds to the value interval corresponding to the current TA, the network device can determine the range of the TA after receiving the timing indication information sent by the terminal, and can configure the corresponding time sequence offset value according to the range.

In one embodiment, the timing indication information corresponds to a change interval corresponding to a change amount of the current TA compared to the target TA.

For example, the change sections may be (ta_1 ', ta_2' ], (ta_2 ', ta_3' ], (ta_3 ', ta_4' ], etc., and the timing instruction information corresponding to each change section may be information 1', information 2', information 3', etc.

The correspondence between the change interval and the timing indication information may be as follows:

Table 3 correspondence table of change interval and timing indication information

When the timing indication information corresponds to a change interval corresponding to a change amount of the current TA compared with the target TA, the network device can determine a range of the current TA of the terminal by combining a TA range corresponding to the timing indication information transmitted last time by the terminal after receiving the timing indication information, so that a corresponding timing offset value is configured according to the range of the current TA.

Optionally, the boundary value of the value interval may be determined according to the TA (ta_init) corresponding to the start time of the terminal and the relative value ta_relative, in addition to the fixed values, such as ta_1, ta_2, ta_3, ta_4, and the like. In this case, the correspondence between the value interval and the timing instruction information may be as shown in the following table:

Table 4 corresponding relation table of value interval and timing indication information

The value interval to which TA belongs	Timing indication information for reporting
		(TA_init，TA_init+TA_relative]	Information 1
(TA_init+TA_relative,TA_init+2×TA_relative]	Information 2
		(TA_init+2×TA_relative,TA_init+3×TA_relative]	Information 3
……	……

In one embodiment, the boundary value of the value interval may be determined by at least one of:

Mode 1: configuring according to the indication information of the network;

the network may configure the size of the boundary values (ta_1, ta_2, ta_3, etc., or ta_relay) by means of indication information, such as RRC signaling, etc.

Mode 2: determining according to the relative position change rate of the terminal and the satellite;

For example, for the scenario of GEO systems and IoT terminals, etc., the fixed boundary value or relative value may be set small due to the relatively slow satellite and terminal position changes, e.g., ta_1=5 us, ta_2=7us, ta_3=8us, or ta_relative=1us, etc., may be set; the difference between the fixed boundary values can also be set small, for example, ta_2=ta_1+1us, ta_3=ta_1+2us, and the like.

For the LEO system and the terminal moving at high speed (in the scene of an airplane or a high-speed rail, etc.), since the satellite and the terminal position change relatively fast, the fixed boundary value or the relative value can be set to be large, for example, ta_1=7us, ta_2=9us, ta_3=12us, ta_relay=2us, etc. can be set; the difference between the fixed boundary values may also be set large, for example, ta_2=ta_1+3us, ta_3=ta_1+3us, and the like.

Mode 3: and determining according to the cell radius.

For a scene with a larger cell radius, the satellite and terminal positions change greatly, so for a scene with a larger cell radius, the fixed boundary value or the relative value can be set to be larger, for example, ta_1=7us, ta_2=9us, ta_3=12us, ta_relative=2us, or the like can be set; the difference between the fixed boundary values may also be set large, for example, ta_2=ta_1+3us, ta_3=ta_1+3us, and the like.

In one embodiment, the boundary value of the variation interval may be determined by at least one of:

Mode one: configuring according to the indication information of the network;

The network may configure the size of the change boundary values (ta_1 ', ta_2', ta_3', etc.) by means of indication information, such as RRC signaling, etc.

Mode two: determining according to the relative position change rate of the terminal and the satellite;

For example, for the scenario of GEO systems and IoT terminals, etc., the change boundary value may be set small due to the relatively slow satellite and terminal position change, e.g., ta_1' =2us, ta_2' =4us, ta_3' =5us, etc., may be set.

For the LEO system and the terminal moving at high speed (in the scene of an airplane or a high-speed rail, etc.), since the satellite and the terminal position change relatively quickly, the change boundary value may be set to be large, for example, ta_1' =7us, ta_2' =9us, ta_3' =12us, etc. may be set.

Mode three: and determining according to the cell radius.

For a scene with a large cell radius, the satellite and terminal positions change greatly, and therefore, for a scene with a large cell radius, the change boundary value may be set to be large, for example, ta_1' =7us, ta_2' =9us, ta_3' =12us, and the like may be set.

In one embodiment, the timing indication information may include a number of bits.

For example, timing indication information 1 may correspond to 0 bit, timing indication information 2 may correspond to 1 bit, timing indication information 3 may correspond to 3 bits, etc.

When the timing indication information includes the number of bits, the correspondence between the value interval or the change interval and the timing indication information may be as follows:

table 5 corresponding relationship table of value interval or variation interval and timing indication information

Value interval or change interval	Timing indication information (bit number) reported
		Interval 1	0
Interval 2	1
		Interval 3	2
……	……

Wherein the number of bits may be determined by at least one of:

Mode I: configuring according to the indication information of the network;

The network may configure the number of bits by means of indication information, e.g. RRC signaling, etc.

For example, when the number of configuration bits is 2,3 intervals (value interval or change interval) may be corresponding, that is, interval 1 corresponds to reporting 0 bits, interval 2 corresponds to reporting 1 bit and interval 3 corresponds to reporting 2 bits.

Mode II: determining according to the relative position change rate of the terminal and the satellite;

For example, for GEO systems and IoT terminals, etc., the number of bits may be set to be small, e.g., 1,2, etc., for scenes where the rate of change of the relative position of the terminal to the satellite is small (communication instantaneity requirements are low).

In contrast, in the LEO system, the terminal moving at a high speed (in the case of an airplane, a high-speed rail, or the like), or the like, the number of bits may be set to be large, for example, 3, 4, or the like in the case of a scene in which the relative position change rate between the terminal and the satellite is large (the real-time communication requirement is high).

Mode III: and determining according to the cell radius.

For a scenario with a larger cell radius, the satellite and terminal position change is larger (the real-time requirement of communication is higher), and the bit number can be set to be larger, for example, 3, 4, etc.

According to the signal transmission method provided by the embodiment of the application, the specific contents of the boundary value and the timing indication information of each section are determined in the various modes, so that the terminal can report the timing indication information efficiently and accurately, and the communication efficiency and accuracy are improved.

In one embodiment, the signal transmission method provided by the embodiment of the present application may further include:

Receiving a target resource configured by a network according to a preset period;

When the terminal periodically reports the timing indication information, the terminal can correspondingly receive the target resources configured by the network before reporting each time, and report the timing indication information according to the target resources.

In an embodiment, the signal transmission method provided by the embodiment of the present application may further include any one of the following:

Operation 1: receiving a target resource with a preset size configured by a network;

The terminal can receive the target resource with the preset size configured by the network, so that the target resource is directly used when the timing indication information is reported each time, and the target resource configured by the network is not required to be received when the timing indication information is reported each time, thereby improving the communication efficiency of the terminal and the network.

Operation 2: and receiving the allocated target resources after the network is unavailable for the last target resource.

When the last target resource is not available, for example, the last target resource is insufficient to support the terminal to send the timing indication information, the terminal can receive the network to reallocate the target resource for the terminal, so that smooth sending of the timing indication information is ensured.

In summary, the signal transmission method provided by the embodiment of the application creatively proposes a scheme that the terminal reports the information related to the TA, so that the base station dynamically adjusts the time sequence offset value of the terminal according to the reported information of the terminal, and the reliability and the accuracy of signal transmission are strongly ensured.

FIG. 6 is a second flow chart of a signal transmission method according to an embodiment of the application; referring to fig. 6, an embodiment of the present application provides a signal transmission method, which may include:

step 610, receiving timing indication information corresponding to a current timing advance TA sent by a terminal;

Step 620, determining a time sequence offset value according to the timing indication information, and sending the time sequence offset value to the terminal;

step 630, receiving an uplink signal sent by the terminal;

the uplink signal is sent by the terminal according to the current TA and the time offset value.

It should be noted that, the main implementation body of the method may be a network device (e.g., a base station). The technical scheme of the application is described in detail below by taking the network equipment to execute the method as an example.

First, the network device may receive timing indication information corresponding to a current TA transmitted by the terminal.

Optionally, after the terminal enters the connected state, the network device may send ephemeris information of the network device to the terminal, so that the terminal calculates the TA from the current terminal to the satellite (reference point) according to the ephemeris information and GNSS (Global Navigation SATELLITE SYSTEM ) information of the terminal itself.

After determining the time for actually sending the uplink signal, the network device may receive the uplink signal sent by the terminal at the time corresponding to the time.

In one embodiment, the receiving the timing indication information corresponding to the current TA sent by the terminal may include:

The network device may receive, according to a predetermined period, timing indication information corresponding to the current TA sent by the terminal to the network device, so as to implement update of the periodically reporting trigger timing schedule.

The periodically receiving of the timing indication information reported by the terminal is particularly suitable for scenes with relatively small changes of the positions of the terminal and the satellite, such as GEO (Geostationary Earth Orbit, geosynchronous orbit) system scenes, and the like. In the GEO system scenario, where the terminal-to-satellite (reference point) distance varies relatively slowly, the network may be configured for a reasonable length of time as a predetermined period.

the target TA may include any of the following:

The timing indication information reported by the terminal is particularly suitable for scenes with relatively quick position changes of the terminal and the satellite, such as LEO system scenes and the like, when the change of the TA exceeds a preset threshold value.

The timing indication information reported by the terminal is received in the value interval of the current TA and the value interval of the last TA, and is especially suitable for scenes with relatively quick change of the positions of the terminal and the satellite, such as LEO system scenes.

According to the signal transmission method provided by the embodiment of the application, the terminal network equipment is triggered to report the timing indication information by the receiving terminal in the various modes, so that the network equipment can update the time sequence offset value under various conditions, and the accuracy and the stability of uplink signal transmission are further ensured.

The value interval to which TA belongs	Timing indication information for reporting
		(TA_1,TA_2]	Information 1
(TA_2,TA_3]	Information 2
		(TA_3,TA_4]	Information 3
……	……

The variation interval to which the variation belongs	Timing indication information for reporting
		(TA_1’,TA_2’]	Information 1'
(TA_2’,TA_3’]	Information 2'
		(TA_3’,TA_4’]	Information 3'
……	……

The value interval to which TA belongs	Timing indication information for reporting
		(TA_init,TA_init+TA_relative]	Information 1
(TA_init+TA_relative,TA_init+2×TA_relative]	Information 2
		(TA_init+2×TA_relative,TA_init+3×TA_relative]	Information 3
……	……

Mode 1: configuring according to the indication information of the network;

Mode 3: and determining according to the cell radius.

Mode one: configuring according to the indication information of the network;

Mode three: and determining according to the cell radius.

Wherein the number of bits may be determined by at least one of:

Mode I: configuring according to the indication information of the network;

Mode III: and determining according to the cell radius.

according to a preset period, sending target resources to a terminal;

The target resource is used for the terminal to send timing indication information corresponding to the current TA to the network equipment.

When the network device receives the periodic timing indication information, the network device can correspondingly send the target resource to the terminal before each receiving, so that the terminal can complete reporting of the timing indication information according to the target resource.

operation 1: transmitting a target resource with a preset size to a terminal;

the network device may send a target resource of a predetermined size to the terminal so that the terminal directly uses the target resource when reporting the timing indication information each time, without sending the target resource to the terminal when reporting the timing indication information each time, thereby improving communication efficiency between the terminal and the network device.

Operation 2: and after the last target resource is unavailable, sending the target resource to the terminal.

When the last target resource is not available, for example, the last target resource is insufficient to support the terminal to send the timing indication information, the network device can reallocate the target resource for the terminal, thereby ensuring smooth receiving of the timing indication information.

The terminal device according to the embodiment of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem, etc. The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network. Such as Personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal DIGITAL ASSISTANT, PDA) and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (ACCESS TERMINAL), user terminal device (user terminal), user agent (user agent), user equipment (user device), and embodiments of the present application are not limited.

The network device according to the embodiment of the present application may be a base station, where the base station may include a plurality of cells for providing services for the terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be configured to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), etc., which are not limited in the embodiment of the present application. In some network structures, the network devices may include centralized unit (centralized unit, CU) nodes and Distributed Unit (DU) nodes, which may also be geographically separated.

Multiple-input Multiple-output (Multi Input Multi Output, MIMO) transmissions may be made between the network device and the terminal device, each using one or more antennas, and the MIMO transmissions may be Single User MIMO (SU-MIMO) or Multiple User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of the root antenna combinations.

Fig. 7 is a schematic structural diagram of a terminal according to an embodiment of the present application, and referring to fig. 7, an embodiment of the present application further provides a terminal, which may include: memory 70, transceiver 720, and processor 730;

The memory 710 is used to store computer programs; a transceiver 720 for receiving and transmitting data under the control of the processor 730; a processor 730 for reading the computer program in the memory 710 and performing the following operations:

receiving a time sequence offset value sent by network equipment;

Sending an uplink signal to the network equipment according to the current TA and the time sequence offset value;

The terminal provided by the embodiment of the application determines the time sequence offset value according to the real-time TA and transmits the uplink signal at the actual transmission time determined according to the real-time TA and the time sequence offset value, so that not only is the accuracy of TA-related time sequence scheduling ensured, but also the influence of TA variation on uplink signal transmission is ensured to be minimized, the accuracy of uplink signal transmission can be ensured, resources are effectively saved, and the communication quality is improved.

Wherein in fig. 7, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 730 and various circuits of memory represented by memory 710, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 720 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including transmission media including wireless channels, wired channels, optical cables, and the like. The user interface 740 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 730 is responsible for managing the bus architecture and general processing, and the memory 710 may store data used by the processor 730 in performing operations.

Alternatively, the processor 730 may be a CPU (central processing unit), an ASIC (Application SPECIFIC INTEGRATED Circuit), an FPGA (Field-Programmable gate array) or a CPLD (Complex Programmable Logic Device ), and the processor may also employ a multi-core architecture.

Processor 730 is operable to perform any of the methods provided by embodiments of the present application in accordance with the obtained executable instructions by invoking a computer program stored in memory 710. The processor and the memory may also be physically separate.

Optionally, the processor 730 is specifically configured to perform the following operations:

wherein the target TA comprises any one of the following:

A predetermined TA;

a TA determined prior to determining the current TA;

configuring according to the indication information of the network;

And determining according to the cell radius.

Optionally, the timing indication information includes a number of bits;

The number of bits is determined by at least one of:

configuring according to the indication information of the network;

And determining according to the cell radius.

Optionally, the processor 730 is further configured to:

Optionally, the processor 730 is further configured to perform any of the following operations:

Receiving a target resource with a preset size configured by a network;

Fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present application, and referring to fig. 8, an embodiment of the present application further provides a terminal, which may include: memory 810, transceiver 820, and processor 830;

memory 810 is used to store a computer program; a transceiver 820 for transceiving data under the control of the processor 830; a processor 830 for reading the computer program in the memory 810 and performing the following operations:

receiving an uplink signal sent by a terminal;

The network device provided by the embodiment of the application determines the time sequence offset value according to the real-time TA and transmits the uplink signal at the actual transmission time determined according to the real-time TA and the time sequence offset value, so that not only is the accuracy of TA-related time sequence scheduling ensured, but also the influence of TA variation on uplink signal transmission is ensured to be minimized, the accuracy of uplink signal transmission can be ensured, resources are effectively saved, and the communication quality is improved.

Wherein in fig. 8, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 830 and various circuits of memory represented by memory 810, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 820 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, and the like. The processor 830 is responsible for managing the bus architecture and general processing, and the memory 810 may store data used by the processor 830 in performing operations.

Processor 830 may be a Central Processing Unit (CPU), application SPECIFIC INTEGRATED Circuit (ASIC), field-Programmable gate array (Field-Programmable GATE ARRAY, FPGA), or complex Programmable logic device (Complex Programmable Logic Device, CPLD), or the processor may employ a multi-core architecture.

Optionally, the processor 830 is specifically configured to perform the following operations:

wherein the target TA comprises any one of the following:

A predetermined TA;

a TA determined prior to determining the current TA;

configuring according to the indication information of the network;

And determining according to the cell radius.

Optionally, the timing indication information includes a number of bits;

The number of bits is determined by at least one of:

configuring according to the indication information of the network;

And determining according to the cell radius.

Optionally, the processor 830 is further configured to perform the following operations:

According to the preset period, sending target resources to the terminal;

Optionally, the processor 830 is further configured to perform any one of the following operations:

Transmitting a target resource of a predetermined size to the terminal;

It should be noted that, the terminal and the network device provided in the embodiments of the present invention can implement all the method steps implemented in the embodiments of the method and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the embodiments of the method in the embodiments are omitted herein.

Fig. 9 is a schematic structural view of a signal transmission device applied to a terminal according to an embodiment of the present application; referring to fig. 9, an embodiment of the present application further provides a signal transmission device, which is applied to a terminal, and may include:

A TA transmitting module 910, configured to transmit timing indication information corresponding to a current timing advance TA to a network device;

A TA receiving module 920, configured to receive a timing offset value sent by a network device;

A signal sending module 930, configured to send an uplink signal to a network device according to the current TA and the timing offset value;

The signal transmission device provided by the embodiment of the application determines the time sequence offset value according to the real-time TA and transmits the uplink signal at the actual transmission time determined according to the real-time TA and the time sequence offset value, so that not only is the accuracy of TA-related time sequence scheduling ensured, but also the influence of TA variation on uplink signal transmission is ensured to be minimized, the accuracy of uplink signal transmission can be ensured, resources are effectively saved, and the communication quality is improved.

Optionally, the TA sending module 910 is specifically configured to perform the following operations:

wherein the target TA comprises any one of the following:

A predetermined TA;

a TA determined prior to determining the current TA;

configuring according to the indication information of the network;

And determining according to the cell radius.

Optionally, the timing indication information includes a number of bits;

The number of bits is determined by at least one of:

configuring according to the indication information of the network;

And determining according to the cell radius.

Optionally, the TA receiving module 920 is further configured to perform the following operations:

Optionally, the TA receiving module 920 is further configured to perform any one of the following operations:

Receiving a target resource with a preset size configured by a network;

Fig. 10 is a schematic structural diagram of a signal transmission device applied to a network device according to an embodiment of the present application; referring to fig. 10, an embodiment of the present application further provides a signal transmission apparatus, which is applied to a network device, and may include:

A TA receiving module 1010, configured to receive timing indication information corresponding to a current timing advance TA sent by a terminal;

an offset value update module 1020, configured to determine a timing offset value according to the timing indication information, and send the timing offset value to the terminal;

a signal receiving module 1030, configured to receive an uplink signal sent by a terminal;

Optionally, the TA receiving module 1010 is specifically configured to perform the following operations:

wherein the target TA comprises any one of the following:

A predetermined TA;

a TA determined prior to determining the current TA;

configuring according to the indication information of the network;

And determining according to the cell radius.

Optionally, the timing indication information includes a number of bits;

The number of bits is determined by at least one of:

configuring according to the indication information of the network;

And determining according to the cell radius.

Optionally, the offset value update module 1020 is further configured to:

According to the preset period, sending target resources to the terminal;

Optionally, the offset value update module 1020 is further configured to perform any one of the following operations:

Transmitting a target resource of a predetermined size to the terminal;

It should be noted that, the signal transmission device provided in the embodiment of the present invention can implement all the method steps implemented in the method embodiment and achieve the same technical effects, and the parts and beneficial effects that are the same as those of the method embodiment in the embodiment are not described in detail herein.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

In another aspect, embodiments of the present application further provide a processor-readable storage medium storing a computer program for causing the processor to perform the method provided in the foregoing embodiments, for example, including:

receiving a time sequence offset value sent by network equipment;

Or alternatively

and receiving an uplink signal sent by the terminal.

The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), and semiconductor storage (e.g., ROM, EPROM, EEPROM, non-volatile storage (NAND FLASH), solid State Disk (SSD)), etc.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A method of signal transmission, comprising:

Sending timing indication information corresponding to a current Timing Advance (TA) to network equipment, wherein the timing indication information corresponds to a value interval corresponding to the current TA;

receiving a time sequence offset value sent by network equipment;

2. The signal transmission method according to claim 1, wherein the transmitting timing indication information corresponding to the current TA to the network device includes:

3. The signal transmission method according to claim 1, wherein the transmitting timing indication information corresponding to the current TA to the network device includes:

wherein the target TA comprises any one of the following:

A predetermined TA;

a TA determined prior to determining the current TA;

4. The signal transmission method according to claim 1, wherein the transmitting timing indication information corresponding to the current TA to the network device includes:

5. The signal transmission method according to claim 1, wherein the current TA corresponds to a value interval, and each value interval corresponds to different timing indication information.

6. The signal transmission method according to claim 3, wherein the timing indication information corresponds to a change interval corresponding to a change amount of the current TA compared to the target TA.

7. The signal transmission method according to claim 6, wherein the current TA corresponds to a change interval compared to the change amount of the target TA, and each change interval corresponds to different timing indication information.

8. The signal transmission method according to claim 1, wherein the boundary value of the value interval is determined by at least one of:

configuring according to the indication information of the network;

And determining according to the cell radius.

9. The signal transmission method according to claim 1, wherein the timing indication information includes a number of bits;

The number of bits is determined by at least one of:

configuring according to the indication information of the network;

And determining according to the cell radius.

10. The signal transmission method according to claim 2, further comprising:

11. The signal transmission method according to claim 3 or 4, characterized by further comprising any one of:

Receiving a target resource with a preset size configured by a network;

12. A method of signal transmission, comprising:

Receiving timing indication information corresponding to a current Timing Advance (TA) sent by a terminal, wherein the timing indication information corresponds to a value interval corresponding to the current TA;

receiving an uplink signal sent by a terminal;

13. The signal transmission method according to claim 12, wherein the timing indication information corresponding to the current TA transmitted by the receiving terminal includes:

14. The signal transmission method according to claim 12, wherein the timing indication information corresponding to the current TA transmitted by the receiving terminal includes:

wherein the target TA comprises any one of the following:

A predetermined TA;

a TA determined prior to determining the current TA;

15. The signal transmission method according to claim 12, wherein the timing indication information corresponding to the current TA transmitted by the receiving terminal includes:

16. The signal transmission method according to claim 12, wherein the current TA corresponds to a value interval, and each value interval corresponds to different timing indication information.

17. The signal transmission method according to claim 14, wherein the timing indication information corresponds to a change interval corresponding to a change amount of the current TA compared to the target TA.

18. The method according to claim 17, wherein the current TA corresponds to a change interval compared to the change amount of the target TA, and each change interval corresponds to different timing indication information.

19. The signal transmission method according to claim 12, wherein the boundary value of the value interval is determined by at least one of:

configuring according to the indication information of the network;

And determining according to the cell radius.

20. The signal transmission method according to claim 12, wherein the timing indication information includes a number of bits;

The number of bits is determined by at least one of:

configuring according to the indication information of the network;

And determining according to the cell radius.

21. The signal transmission method according to claim 13, further comprising:

According to the preset period, sending target resources to the terminal;

22. The signal transmission method according to claim 14 or 15, characterized by further comprising any one of:

Transmitting a target resource of a predetermined size to the terminal;

23. A terminal comprising a memory, a transceiver, and a processor;

receiving a time sequence offset value sent by network equipment;

24. The terminal of claim 23, wherein the processor is configured to:

25. The terminal of claim 23, wherein the processor is configured to:

According to a preset period, timing indication information corresponding to the current TA is sent to network equipment;

wherein the target TA comprises any one of the following:

A predetermined TA;

a TA determined prior to determining the current TA;

26. The terminal of claim 23, wherein the processor is configured to:

27. The terminal of claim 23, wherein the current TA corresponds to a value interval, and each value interval corresponds to different timing indication information.

28. The terminal of claim 25, wherein the timing indication information corresponds to a change interval corresponding to an amount of change of the current TA as compared to the target TA.

29. The terminal of claim 28, wherein the current TA corresponds to a change interval compared to the change amount of the target TA, and each change interval corresponds to different timing indication information.

30. The terminal of claim 23, wherein the boundary value of the value interval is determined by at least one of:

configuring according to the indication information of the network;

And determining according to the cell radius.

31. The terminal of claim 23, wherein the timing indication information comprises a number of bits;

The number of bits is determined by at least one of:

configuring according to the indication information of the network;

And determining according to the cell radius.

32. The terminal of claim 24, wherein the processor is further configured to:

33. The terminal of claim 25 or 26, wherein the processor is further configured to perform any of the following operations:

Receiving a target resource with a preset size configured by a network;

34. A network device comprising a memory, a transceiver, and a processor;

receiving an uplink signal sent by a terminal;

35. The network device of claim 34, wherein the processor is specifically configured to:

36. The network device of claim 34, wherein the processor is specifically configured to:

wherein the target TA comprises any one of the following:

A predetermined TA;

a TA determined prior to determining the current TA;

37. The network device of claim 34, wherein the processor is specifically configured to:

38. The network device of claim 34, wherein the current TA corresponds to a value interval, and each value interval corresponds to different timing indication information.

39. The network device of claim 36, wherein the timing indication information corresponds to a change interval corresponding to an amount of change of the current TA as compared to the target TA.

40. The network device of claim 39, wherein the current TA corresponds to a change interval as compared to the change amount of the target TA, each change interval corresponding to different timing indication information.

41. The network device of claim 34, wherein the boundary value of the value interval is determined by at least one of:

configuring according to the indication information of the network;

And determining according to the cell radius.

42. The network device of claim 34, wherein the timing indication information comprises a number of bits;

The number of bits is determined by at least one of:

configuring according to the indication information of the network;

And determining according to the cell radius.

43. The network device of claim 35, wherein the processor is further configured to:

According to the preset period, sending target resources to the terminal;

44. The network device of claim 36 or 37, wherein the processor is further configured to perform any one of:

Transmitting a target resource of a predetermined size to the terminal;

45. A signal transmission device applied to a terminal, comprising:

the TA transmitting module is used for transmitting timing indication information corresponding to the current timing advance TA to the network equipment, wherein the timing indication information corresponds to a value interval corresponding to the current TA;

46. A signal transmission apparatus for use in a network device, comprising:

the TA receiving module is used for receiving timing indication information which is sent by the terminal and corresponds to the current timing advance TA, wherein the timing indication information corresponds to a value interval corresponding to the current TA;

47. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to perform the method of any one of claims 1 to 11 or the method of any one of claims 12 to 22.