CN115052332A

CN115052332A - Signal transmission method, device and storage medium

Info

Publication number: CN115052332A
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: 2022-09-13
Anticipated expiration: 2041-03-08
Also published as: CN115052332B

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: sending 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 timing schedule related to TA, but also ensure the minimum influence of the change of TA on the transmission of the uplink signal, ensure the accuracy of the transmission of the uplink signal, effectively save resources and improve the 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, an apparatus, and a storage medium.

Background

In an NTN (Non-Terrestrial network, NTN, Non-Terrestrial network, also called satellite communication network) system, due to a change in a distance between a UE (User Equipment) and a satellite, a corresponding signal transmission delay may also change.

This situation causes the Timing Advance (TA) of the UE for uplink signal transmission and the scheduling timing between uplink and downlink related to TA to change, which is not favorable for the network to control the uplink signal timing of the user.

In addition, considering that the radius of the cell in the NTN system is large, if the timing and timing relationship are adjusted according to the prior art, that is, according to the maximum distance from the UE in the cell to the satellite (reference point), 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 uplink TA (timing advance) related scheduling of UE (user equipment) in the prior art.

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

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

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

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

wherein the target TA comprises any one of:

a predetermined TA;

a TA determined prior to determining the current TA;

and the terminal initially accesses the corresponding TA when the network is accessed.

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 last 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 variation interval corresponding to a variation of the current TA compared to the target TA.

Optionally, a variation of the current TA with respect to the target TA corresponds to a variation interval, and each variation interval corresponds to different timing indication information.

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

configuring according to the indication information of the network;

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

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;

according to the cell radius.

Optionally, the method further comprises:

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

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

Optionally, the method further comprises any one of:

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

receiving a target resource allocated by a network after a last target resource is unavailable;

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

receiving timing indication information which is sent by a terminal and corresponds to a current timing advance TA;

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

receiving an uplink signal sent by a terminal;

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

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

and receiving timing indication information which is sent by the terminal and corresponds to the current TA according to a preset period.

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

receiving timing indication information which is sent by the terminal and corresponds to the current TA 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:

a predetermined TA;

a TA determined prior to determining the current TA;

and receiving the timing indication information corresponding to the current TA, which is 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 last TA belongs.

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

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

Optionally, the boundary value of the value range is determined by at least one of the following manners:

configuring according to the indication information of the network;

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;

according to the cell radius.

Optionally, the method further comprises:

sending target resources to the terminal according to the preset period;

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

Optionally, the method further comprises any one of:

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:

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

wherein the target TA comprises any one of:

a predetermined TA;

a TA determined prior to determining the current TA;

Optionally, a variation of the current TA compared to the target TA corresponds to one variation interval, and each variation interval corresponds to different timing indication information.

configuring according to the indication information of the network;

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;

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;

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:

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

receiving an uplink signal sent by a terminal;

wherein the target TA comprises any one of:

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 under the condition that the value interval to which the current TA belongs is different from the value interval to which the last TA belongs.

configuring according to the indication information of the network;

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;

according to the cell radius.

Optionally, the processor is further configured to:

sending target resources to the terminal according to the preset period;

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 apparatus, applied to a terminal, including:

a TA sending module, configured to send timing indication information corresponding to a current timing advance TA to a network device;

the TA receiving module is used for receiving a 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:

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

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 a terminal;

In a seventh aspect, an embodiment of the present application provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is configured to cause the processor to execute the signal transmission method provided in the first aspect or the second aspect.

According to the signal transmission method, the signal transmission device and the signal transmission storage medium, the time sequence deviation value is determined according to the real-time TA, and the uplink signal is transmitted at the actual transmission time determined according to the real-time TA and the time sequence deviation value, so that the accuracy of TA-related time sequence scheduling is ensured, the influence of TA change on uplink signal transmission is minimized, the accuracy of uplink signal transmission can be ensured, resources are effectively saved, and the communication quality is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic delay diagram of NTN;

FIG. 2 is a diagram illustrating a downlink scheduling timing sequence;

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

FIG. 4 is a schematic diagram illustrating the distance variation between a terminal and a satellite in the NTN;

fig. 5 is a flowchart illustrating a signal transmission method according to an embodiment of the present application;

fig. 6 is a second flowchart illustrating a signal transmission method according to an embodiment of the present application;

fig. 7 is a schematic structural diagram 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 diagram of a signal transmission apparatus applied to a terminal according to an embodiment of the present application;

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

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the embodiment of the present application, the term "and/or" describes an association relationship of associated objects, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

To facilitate understanding of the technical solution of the present application, the following contents are now introduced:

in NTN, there are two modes of operation, one is the bent-tube mode: the satellite merely forwards the signal without any processing, and the terminal communicates with a network device (e.g., a base station); the other is a regenerative communication mode: the satellite can detect the information of the received signal, process and forward the information to complete the function of the network equipment, and connect the terminal and the network equipment.

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

For the bent-pipe communication, the terminal and the network device experience the transmission delay T1 of the user link and the transmission delay T2 of the feeder link when performing data communication, and the 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, the RTT of which is 2 × T1.

In scheduling uplink and downlink timing of NTN, in order to ensure stable operation of the timing, 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 the ground mobile communication, the TA value of the satellite communication is large, and in order to ensure the reliability of the timing sequence, the network side needs to add an offset value on the basis of notifying the scheduling timing value of the terminal. The offset value needs to be larger than TA at this time, so as to ensure that the uplink transmission of the terminal is performed after the downlink reception and a processing delay.

As shown in fig. 2, the network side transmits a PDCCH (Physical Downlink Control Channel) at time T0, and the terminal receives a PDSCH (Physical Downlink Shared Channel) at time T0+ T _ D + K0; where K0 represents the interval between the PDCCH and the PDSCH configured by the network side, and T _ D is the transmission delay from the network side to the terminal.

Meanwhile, the time when the network side designates the PUCCH to feed back the HARQ-ACK is K1 after receiving the PDSCH. Considering the TA of the terminal, the scheduled transmission time of the PUCCH is T0+ T _ D + K0+ K1+ offset1 (offset value), and the transmission time after actually considering the TA is T0+ T _ D + K0+ K1+ offset 1-TA; the TA value is based on the actual TA compensation algorithm, and if absolute TA compensation is used, then TA is equal to 2 × T _ D.

Accordingly, as shown in fig. 3, the scheduled transmission time of the PUSCH is T0+ T _ D + K2+ offset2 (offset value), and the transmission time after TA is actually considered is T0+ T _ D + K2+ offset 2-TA.

In addition, since the repeated transmission technology is mainly used in IoT (Internet of Things) to enhance coverage, the terminal is generally in a static state or moving at a low speed, the location of the base station is also fixed, the duration of the repeated transmission is relatively long, the TA variation in the uplink transmission scheme is relatively small, and the TA in the uplink transmission scheme takes the same value during the repeated transmission. Therefore, the problem analysis can be more obviously performed by using the IoT system.

In the NTN, due to the movement of the non-geostationary orbit satellite relative to the terminal, when the terminal performs uplink data transmission, the distances between the terminal and the satellite corresponding to different transmission time instants change (D1 is not equal to D2), and a specific schematic diagram can refer to fig. 4.

Accordingly, actual transmission delays of signals repeatedly transmitted each time received by a gateway station (transparent transponded satellite) or an on-satellite receiver (regenerated satellite) are different, and if a scheme that the same TA or the same uplink and downlink scheduling timing offset value is adopted during transmission, problems such as intersymbol interference or resource waste of terminal data received by the receiver may be caused, and reception performance is reduced.

Considering that the moving speed of the low orbit satellite LEO (Low Earth orbit) is about 7.6km/s when the height is 600\1200km, the distance between the terminal and the satellite can be changed to 7 km/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, and reaches 70km, and the round-trip time between the terminal and the satellite changes by 2 × 70/(3 × 10^5) to 0.46 us.

Taking uplink transmission of NB-IoT (Narrow Band Internet of Things) under the FDD mechanism as an example, the maximum number of repeated transmissions is 128, and considering that when the LEO height is 600\1200km, the satellite moving speed is about 7.6km/s, and the transmission time required by the maximum number of repeated transmissions causes the transmission delay variation of the terminal, the specific result is shown in table 1 below. In the HD-FDD scheme, there is a certain gap in the results due to the existence of the uplink transmission interval, and the specific results are shown in table 2 below.

Table 1FDD scheme, terminal transmission delay variation in NB-IoT different subcarrier configurations

Table 2HD-FDD scheme, terminal transmission delay variation under NB-IoT different subcarrier configurations

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

In addition, in the uplink and downlink timing scheduling of NTN, if the maximum round trip time or the maximum difference TA in the cell is selected as the selection of the offset value to ensure the stable operation of the timing, the resource waste of the time corresponding to the offset value-TA will be caused, and when the radius of the cell is large, the time difference between the maximum RTT and the minimum RTT in the cell, which can be corresponded to the maximum value, cannot be ignored.

Fig. 5 is a flowchart illustrating a signal transmission method according to an embodiment of the present 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 sequence 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;

It should be noted that the executing body of the method may be a terminal, for example, a terminal side Device such as a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, an ultra-Mobile Personal Computer (UMPC), a 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 does not limit the specific type of the terminal.

The following describes the technical solution of the present application in detail by taking the terminal as an example to execute the above method.

First, the terminal may transmit timing indication information corresponding to a 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 a TA from the current terminal to a 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 may determine, according to the timing offset value, an opportunity to actually transmit the uplink signal in combination with the current TA.

For example, if the timing at which the network configures the base station to transmit the uplink signal is T0 and the timing Offset value is Offset, the timing at which the terminal actually transmits the uplink signal T1 becomes T0+ Offset-TA.

After determining the actual uplink signal transmission timing, the terminal may transmit the uplink signal to the network device when the timing arrives.

According to the signal transmission method provided by the embodiment of the application, the timing deviation value is determined according to the real-time TA, and the uplink signal is transmitted at the actual transmission opportunity determined according to the real-time TA and the timing deviation value, so that the accuracy of TA-related timing scheduling is ensured, the influence of TA change on uplink signal transmission is minimized, the accuracy of uplink signal transmission can be ensured, resources are effectively saved, and the communication quality is improved.

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 a preset period.

The specific size of the predetermined period may be, for example, 2min, 5min, 1h, and the like, and the specific size may be adjusted according to an actual situation, which is not specifically limited in this embodiment of the application.

The terminal can send the timing indication information corresponding to the current TA to the network equipment according to the preset period, so that the periodic reporting of the updating of the trigger timing schedule is realized.

The terminal periodically reports the timing indication information, and is particularly suitable for scenes with small relative change of the positions of the terminal and the satellite, such as GEO (Geostationary Earth Orbit) system scenes. In a GEO system scenario, the distance from the terminal to the satellite (reference point) changes relatively slowly, and the network can configure a reasonable time length as a predetermined period.

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

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

wherein the target TA may include any one of:

for example, the network may pre-configure the size of the predetermined TA, for example, 0.2us, 0.4us, and the size of the predetermined TA may be adjusted according to an actual scenario, which is not specifically limited in this embodiment of the application.

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

A corresponding TA when the terminal initially accesses the network; the TA corresponding to the initial access of the terminal to the network may be set as the target TA within a certain period of time, for example, within 1 day.

When the terminal determines that the variation of the current TA compared with the target TA exceeds the predetermined threshold, the terminal may send timing indication information to the network device.

The size of the predetermined threshold may be, for example, 0.1us,0.3us, and the specific size may be adjusted according to an actual situation, which is not specifically limited in this embodiment of the application.

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

The terminal reports the timing indication information when the change of the TA exceeds a preset threshold value, and the method is particularly suitable for scenes with fast relative change of the positions of the terminal and a satellite, such as LEO system scenes.

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 last TA belongs.

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

The terminal reports the timing indication information when the value interval to which the current TA belongs is different from the value interval to which the last TA belongs, and the method is particularly suitable for scenes with fast relative 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 is triggered to report the timing indication information to the network equipment through the various modes, so that the network equipment can update the timing deviation 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.

Optionally, 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), and the like, and the timing indication information corresponding to each value interval may be information 1, information 2, information 3, and the like.

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

table 3 table of correspondence between value intervals and timing indication information

TA value range	Reported timing indication information
		(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, after receiving the timing indication information sent by the terminal, the network device may determine the range of the TA, and may configure a corresponding timing offset value according to the range.

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

Optionally, the variation amount of the current TA compared to the target TA corresponds to one variation interval, and each variation interval corresponds to different timing indication information.

For example, the change section may be (TA _1 ', TA _2 ', (TA _2 ', TA _3 ', (TA _3 ', TA _4 ' ], or the like, and the timing indication information corresponding to each change section may be information 1 ', information 2 ', information 3 ', or the like.

The correspondence relationship between the change interval and the timing indication information may be as shown in the following table:

table 3 table of correspondence between change interval and timing indication information

It should be noted that, when the timing indication information corresponds to a change interval corresponding to a change amount of the current TA from the target TA, after receiving the timing indication information, the network device may determine the range of the current TA of the terminal by combining with the TA range corresponding to the timing indication information last sent by the terminal, so as to configure the corresponding timing offset value according to the range of the current TA.

Optionally, the boundary value of the value section may be determined according to TA (TA _ init) and the relative value TA _ relative corresponding to the terminal at the start time, in addition to a fixed value, for example, TA _1, TA _2, TA _3, TA _4, and the like. In this case, the correspondence between the value intervals and the timing indication information may be as shown in the following table:

table 4 correspondence table between value section and timing indication information

TA value range	Reported timing indication information
		(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 range may be determined by at least one of the following methods:

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 _ relative) by way of indication information, e.g., an indication such as RRC signaling.

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

for example, for a scenario of a GEO system, an IoT terminal, and the like, since the satellite and the terminal change relatively slowly, the fixed boundary value or the relative value may be set to be small, for example, TA _1 ═ 5us, TA _2 ═ 7us, TA _3 ═ 8us, or TA _ relative ═ 1us, and the like may be set; the difference between the fixed boundary values may also be set small, for example TA _2 ═ TA _1+1us, TA _3 ═ TA _1+2us, and the like.

In the case of a scenario such as an LEO system or a terminal moving at a high speed (in an airplane or a high-speed train), since the position of the satellite and the terminal change relatively quickly, the fixed boundary value or the relative value may be set to be large, for example, TA _1 ═ 7us, TA _2 ═ 9us, TA _3 ═ 12us, or TA _ relative ═ 2us may be set; it is also possible to set the difference between the fixed limit values to be large, for example, TA _2 ═ TA _1+3us, TA _3 ═ TA _1+3us, and the like.

Mode 3: according to the cell radius.

Since the satellite and terminal position change greatly in a scene with a large cell radius, the fixed boundary value or relative value may be set to be large in a scene with a large cell radius, for example, TA _1 ═ 7us, TA _2 ═ 9us, TA _3 ═ 12us, or TA _ relative ═ 2us may be set; it is also possible to set the difference between the fixed limit values to be 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:

the first method is as follows: configuring according to the indication information of the network;

the network may configure the size of the change boundary value (TA _1 ', TA _2 ', TA _3 ', etc.) by means of indication information, e.g., RRC signaling, etc.

The second method comprises the following steps: determining according to the relative position change rate of the terminal and the satellite;

for example, for a scenario of a GEO system, an IoT terminal, and the like, since the satellite and terminal position change relatively slowly, the change boundary value may be set to be small, for example, TA _1 ═ 2us, TA _2 ═ 4us, TA _3 ═ 5us, and the like may be set.

In a scenario such as an LEO system or a terminal moving at a high speed (in a scenario such as an airplane or a high-speed train), since the positions of the satellite and the terminal change relatively quickly, the change boundary value may be set to be large, for example, TA _1 ═ 7us, TA _2 ═ 9us, and TA _3 ═ 12us may be set.

The third method comprises the following steps: according to the cell radius.

Since the satellite and terminal position change greatly in a scene with a large cell radius, the change boundary value may be set to be large in a scene with a large cell radius, 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 bits, timing indication information 2 may correspond to 1 bit, timing indication information 3 may correspond to 3 bits, and the like.

When the timing indication information includes the number of bits, the corresponding relationship between the value or change interval and the timing indication information may be as shown in the following table:

table 5 table of correspondence between value or change interval and timing indication information

Value or variation interval	Reported timing indication information (bit number)
		Interval 1	0
Interval 2	1
		Interval 3	2
……	……

Wherein, the bit number can be determined by at least one of the following modes:

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

the network may configure the number of bits by way of indication information, e.g., an indication such as RRC signaling.

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

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

for example, for a scenario in which the relative position change rate of the terminal and the satellite is small (the communication real-time requirement is low) such as a GEO system and an IoT terminal, the number of bits may be set to be small, for example, 1, 2, and the like.

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

Mode III: according to the cell radius.

For a scene with a larger cell radius, the satellite and terminal positions change more (the communication real-time requirement is higher), and at this time, the number of bits may be set to be more, for example, 3, 4, etc.

According to the signal transmission method provided by the embodiment of the application, the boundary values of the intervals and the specific contents of the timing indication information are determined through 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 an embodiment, the signal transmission method provided in the embodiment of the present application may further include:

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

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

When the terminal periodically reports the timing indication information, the terminal may correspondingly receive the target resource configured by the network before each report, and complete the report of the timing indication information according to the target resource.

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

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 every time, the target resource configured by the network is not required to be received when the timing indication information is reported every time, and the communication efficiency of the terminal and the network is improved.

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

When the last target resource is not available, for example, the last target resource is not enough 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 the smooth sending of the timing indication information is ensured.

To sum up, the signal transmission method provided in the embodiment of the present application creatively provides the terminal to report the TA related information, so that the base station dynamically adjusts the size of the timing offset value of the terminal according to the reported information of the terminal, thereby powerfully ensuring the reliability and accuracy of signal transmission.

Fig. 6 is a second flowchart illustrating a signal transmission method according to an embodiment of the present 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 which is sent by a terminal and corresponds to the current timing advance TA;

step 620, determining a timing sequence deviation value according to the timing indication information, and sending the timing sequence deviation value to the terminal;

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

the uplink signal is transmitted by the terminal according to the current TA and the timing offset value.

It should be noted that the execution subject of the method may be a network device (e.g., a base station). The following describes the technical solution of the present application in detail by taking the network device as an example to execute the above method.

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

Alternatively, 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 may calculate a TA from the current terminal to a Satellite (reference point) according to the ephemeris information and GNSS (Global Navigation Satellite System) information of the terminal itself.

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

After receiving the timing offset value, the terminal may determine, according to the timing offset value, an actual uplink signal transmission timing in combination with the current TA.

After determining the actual uplink signal transmission timing, the network device may receive the uplink signal transmitted by the terminal at a time corresponding to the actual uplink signal transmission timing.

According to the signal transmission method provided by the embodiment of the application, the time sequence deviation value is determined according to the real-time TA, and the uplink signal is transmitted at the actual transmission time determined according to the real-time TA and the time sequence deviation value, so that the accuracy of TA-related time sequence scheduling is ensured, the influence of TA change on uplink signal transmission is minimized, the accuracy of uplink signal transmission can be ensured, resources are effectively saved, and the communication quality is improved.

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

and receiving timing indication information corresponding to the current TA, which is sent by the terminal, according to a preset period.

The specific size of the predetermined period may be, for example, 2min, 5min, 1h, and the like, and the specific size may be adjusted according to an actual situation, which is not specifically limited in this embodiment of the present application.

The network device may receive the timing indication information corresponding to the current TA sent by the terminal to the network device according to the predetermined period, thereby implementing periodic reporting of the update of the trigger timing schedule.

The periodic reception of the timing indication information reported by the terminal is particularly suitable for scenes with small relative change between the terminal and the satellite, such as GEO (Geostationary Earth Orbit) system scenes. In a GEO system scenario, the distance from the terminal to the satellite (reference point) changes relatively slowly, and the network can configure a reasonable time length as a predetermined period.

under the condition that the variation of the current TA compared with the target TA exceeds a preset threshold value, receiving timing indication information which is sent by a terminal and corresponds to the current TA;

wherein the target TA may include any one of:

for example, the network may pre-configure the size of the predetermined TA, for example, 0.2us, 0.4us, and the size of the predetermined TA may be adjusted according to an actual scenario, which is not specifically limited in this embodiment of the present application.

A TA determined prior to determining the current TA; the TA last determined by the terminal may be the target TA, or a specific TA in the history TAs determined by the terminal may be the target TA.

When the terminal determines that the variation of the current TA compared with the target TA exceeds the predetermined threshold, the terminal may send the timing indication information to the network device.

The timing indication information reported by the receiving terminal when the change of the TA exceeds the preset threshold value is particularly suitable for scenes with fast relative change of the positions of the terminal and the satellite, such as LEO system scenes.

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

and receiving the 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 last TA belongs.

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

The method is particularly suitable for scenes with fast relative change of the positions 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 network equipment is triggered to receive the timing indication information reported by the terminal through various modes, and the network equipment can update the timing deviation value under various conditions, so that the accuracy and the stability of uplink signal transmission are further ensured.

table 3 correspondence table between value intervals and timing indication information

TA value range	Reported timing indication information
		(TA_1,TA_2]	Information 1
(TA_2,TA_3]	Information 2
		(TA_3,TA_4]	Information 3
……	……

For example, the change section may be (TA _1 ', TA _2 ', (TA _2 ', TA _3 ', (TA _3 ', TA _4 ' ], or the like, and the timing instruction information corresponding to each change section may be information 1 ', information 2 ', information 3 ', or the like.

The correspondence relationship between the change interval and the timing indication information can be shown in the following table:

Variation interval to which variation belongs	Reported timing indication information
		(TA_1’,TA_2’]	Information 1'
(TA_2’,TA_3’]	Information 2'
		(TA_3’,TA_4’]	Information 3'
……	……

table 4 table of correspondence between value intervals and timing indication information

The value interval to which TA belongs	Reported timing indication information
		(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;

the network may configure the size of the boundary value (TA _1, TA _2, TA _3, etc., or TA _ relative) by way of indication information, e.g., an indication such as RRC signaling.

In the case of a scenario such as an LEO system or a terminal moving at a high speed (in an airplane or a high-speed train), since the position of the satellite and the terminal change relatively quickly, the fixed boundary value or the relative value may be set to be large, for example, TA _1 ═ 7us, TA _2 ═ 9us, TA _3 ═ 12us, or TA _ relative ═ 2us may be set; it is also possible to set the difference between the fixed limit values to be large, for example TA _2 ═ TA _1+3us, TA _3 ═ TA _1+3us, and the like.

Mode 3: according to the cell radius.

the method I comprises the following steps: configuring according to the indication information of the network;

the network may configure the size of the change margin values (TA _1 ', TA _2 ', TA _3 ', etc.) by way of indication information, such as an indication of RRC signaling.

In a scenario such as an LEO system or a terminal moving at a high speed (in a scenario such as an airplane or a high-speed train), since the positions of the satellite and the terminal change relatively quickly, the change margin may be set to be large, for example, TA _1 ═ 7us, TA _2 ═ 9us, and TA _3 ═ 12us may be set.

The third method comprises the following steps: according to the cell radius.

Value or variation interval	Timing indication information (number of bits) reported
		Interval 1	0
Interval 2	1
		Interval 3	2
……	……

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

Mode III: according to the cell radius.

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

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 may correspondingly send the target resource to the terminal before each reception, so that the terminal completes reporting of the timing indication information according to the target resource.

operation 1: sending target resources with preset size to a terminal;

the network device can send the target resource with the preset size to the terminal, so that the terminal can directly use the target resource when reporting the timing indication information each time, and the terminal does not need to send the target resource when reporting the timing indication information each time, thereby improving the communication efficiency between the terminal and the network device.

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

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

The terminal device referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or another processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be referred to as a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal device, e.g., a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN), and may exchange language and/or data with the Radio Access Network. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in this embodiment of the present application.

The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells for providing services to a terminal. A base station may also be referred to as an access point, or a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to exchange received air frames with 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 Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or a Code Division Multiple Access (CDMA), may be a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), may be an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) System, may be a 5G Base Station (gbb) in a 5G network architecture (next evolution System), may be a Home evolved Node B (HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico Base Station), and the like, which are not limited in the embodiments of the present application. In some network architectures, a network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Multiple Input Multiple Output (MIMO) transmission may be performed between the network device and the terminal device by using one or more antennas, where the MIMO transmission may be Single User MIMO (SU-MIMO) or Multi-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 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 for storing computer programs; a transceiver 720 for transceiving 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 deviation value;

According to the terminal provided by the embodiment of the application, the time sequence deviation value is determined according to the real-time TA, and the uplink signal is sent at the actual sending time determined according to the real-time TA and the time sequence deviation value, so that the accuracy of TA-related time sequence scheduling is ensured, the influence of TA change on uplink signal transmission is minimized, the accuracy of uplink signal transmission can be ensured, resources are effectively saved, and the communication quality is improved.

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

Optionally, 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 adopt a multi-core architecture.

The processor 730 is configured to execute any of the methods provided by the embodiments of the present application by calling the computer program stored in the memory 710 according to the obtained executable instructions. The processor and memory may also be physically separated.

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

wherein the target TA comprises any one of:

a predetermined TA;

a TA determined prior to determining the current TA;

configuring according to the indication information of the network;

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;

according to the cell radius.

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

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;

the memory 810 is used to store computer programs; 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;

According to the network equipment provided by the embodiment of the application, the time sequence deviation value is determined according to the real-time TA, and the uplink signal is sent at the actual sending time determined according to the real-time TA and the time sequence deviation value, so that the accuracy of TA-related time sequence scheduling is ensured, the influence of TA change on uplink signal transmission is minimized, the accuracy of uplink signal transmission can be ensured, resources are effectively saved, and the communication quality is improved.

Wherein in fig. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 830, and various circuits, represented by memory 810, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 820 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic 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.

The processor 830 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

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

receiving timing indication information which is sent by the terminal and corresponds to the current TA under the condition that the variation of the current TA compared with a target TA exceeds a preset threshold value;

wherein the target TA comprises any one of:

a predetermined TA;

a TA determined prior to determining the current TA;

and the terminal initially accesses the corresponding TA of the network.

configuring according to the indication information of the network;

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;

according to the cell radius.

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

sending target resources to the terminal according to the preset period;

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

sending target resources with a preset 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 by the foregoing method embodiments, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiments in this embodiment are omitted here.

Fig. 9 is a schematic structural diagram of a signal transmission apparatus 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 apparatus, which is applied to a terminal, and may include:

a TA sending module 910, configured to send 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;

According to the signal transmission device provided by the embodiment of the application, the timing deviation value is determined according to the real-time TA, and the uplink signal is transmitted at the actual transmission opportunity determined according to the real-time TA and the timing deviation value, so that the accuracy of timing scheduling related to the TA is ensured, the influence of the change of the TA on the uplink signal transmission is minimized, the accuracy of the 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:

a predetermined TA;

a TA determined prior to determining the current TA;

and the terminal initially accesses the corresponding TA of the network.

configuring according to the indication information of the network;

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;

according to the cell radius.

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

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 apparatus 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 updating 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;

According to the signal transmission device provided by the embodiment of the application, the time sequence deviation value is determined according to the real-time TA, and the uplink signal is transmitted at the actual transmission opportunity determined according to the real-time TA and the time sequence deviation value, so that the accuracy of TA-related time sequence scheduling is ensured, the influence of TA change on uplink signal transmission is minimized, the accuracy of uplink signal transmission can be ensured, resources are effectively saved, and the communication quality is improved.

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

wherein the target TA comprises any one of:

a predetermined TA;

a TA determined prior to determining the current TA;

configuring according to the indication information of the network;

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;

according to the cell radius.

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

sending target resources to the terminal according to the preset period;

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

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

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

It should be noted that, the signal transmission apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are not repeated herein.

It should be noted that, in the embodiment of the present application, the division of the unit is schematic, and is only one logic function division, and when the actual implementation is realized, another division manner may be provided. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) 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: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

On the other hand, an embodiment of the present application further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, where the computer program is configured to cause the processor to execute the method provided in each of the foregoing embodiments, for example, the method includes:

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 deviation value;

alternatively, the first and second electrodes may be,

and receiving an uplink signal sent by the terminal.

The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs)), etc.

As will be appreciated by one skilled in the art, 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, 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 flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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 changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method of signal transmission, comprising:

receiving a time sequence offset value sent by network equipment;

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

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

wherein the target TA comprises any one of:

a predetermined TA;

a TA determined prior to determining the current TA;

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

5. The signal transmission method according to any one of claims 1 to 4, wherein the timing indication information corresponds to a value range corresponding to the current TA.

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

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

8. The signal transmission method as claimed in claim 7, wherein the variation of the current TA with respect to the target TA corresponds to a variation interval, and each variation interval corresponds to different timing indication information.

9. The signal transmission method according to claim 5, wherein the boundary value of the value interval is determined by at least one of:

configuring according to the indication information of the network;

according to the cell radius.

10. The signal transmission method according to claim 5, 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;

according to the cell radius.

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

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

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

13. A signal transmission method, comprising:

receiving an uplink signal sent by a terminal;

14. The signal transmission method according to claim 13, wherein the receiving the timing indication information corresponding to the current TA sent by the terminal comprises:

15. The signal transmission method according to claim 13, wherein the receiving the timing indication information corresponding to the current TA sent by the terminal comprises:

wherein the target TA comprises any one of:

a predetermined TA;

a TA determined prior to determining the current TA;

16. The signal transmission method according to claim 13, wherein the receiving the timing indication information corresponding to the current TA sent by the terminal comprises:

17. The signal transmission method according to any one of claims 13 to 16, wherein the timing indication information corresponds to a value range corresponding to the current TA.

18. The signal transmission method of claim 17, wherein the current TA corresponds to one value interval, and each value interval corresponds to different timing indication information.

19. The signal transmission method of claim 15, wherein the timing indication information corresponds to a variation interval corresponding to a variation of the current TA compared to the target TA.

20. The method of claim 19, wherein a variation of the current TA with respect to the target TA corresponds to a variation interval, and each variation interval corresponds to different timing indication information.

21. The signal transmission method according to claim 17, wherein the boundary value of the value interval is determined by at least one of:

configuring according to the indication information of the network;

according to the cell radius.

22. The signal transmission method according to claim 17, 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;

according to the cell radius.

23. The signal transmission method according to claim 14, further comprising:

sending target resources to the terminal according to the preset period;

24. The signal transmission method according to claim 15 or 16, further comprising any one of:

sending target resources with a preset size to the terminal;

25. A terminal comprising a memory, a transceiver, a processor;

a memory for storing a computer program; a transceiver for transceiving data under the 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;

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

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

wherein the target TA comprises any one of:

a predetermined TA;

a TA determined prior to determining the current TA;

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

29. The terminal according to any of claims 25 to 28, wherein the timing indication information corresponds to a value interval corresponding to the current TA.

30. The terminal of claim 29, wherein the current TA corresponds to a value interval, and each value interval corresponds to different timing indication information.

31. The terminal of claim 27, wherein the timing indication information corresponds to a variation interval corresponding to a variation of the current TA compared to the target TA.

32. The terminal of claim 31, wherein a variation of the current TA compared to the target TA corresponds to one variation interval, and each variation interval corresponds to different timing indication information.

33. The terminal of claim 29, wherein the boundary value of the value interval is determined by at least one of:

configuring according to the indication information of the network;

according to the cell radius.

34. The terminal of claim 29, 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;

according to the cell radius.

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

36. The terminal of claim 27 or 28, 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;

37. A network device comprising a memory, a transceiver, a processor;

receiving an uplink signal sent by a terminal;

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

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

wherein the target TA comprises any one of:

a predetermined TA;

a TA determined prior to determining the current TA;

and the terminal initially accesses the corresponding TA of the network.

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

41. The network device according to any of claims 37 to 40, wherein the timing indication information corresponds to a value interval corresponding to the current TA.

42. The network device of claim 41, wherein the current TA corresponds to one value interval, and each value interval corresponds to different timing indication information.

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

44. The network device of claim 43, wherein a variation of the current TA compared to the target TA corresponds to a variation interval, and each variation interval corresponds to different timing indication information.

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

configuring according to the indication information of the network;

according to the cell radius.

46. The network device of claim 41, 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;

according to the cell radius.

47. The network device of claim 38, wherein the processor is further configured to:

sending target resources to the terminal according to the preset period;

48. The network device of claim 39 or 40, wherein the processor is further configured to perform any of the following operations:

sending target resources with a preset size to the terminal;

49. A signal transmission apparatus applied to a terminal, comprising:

50. A signal transmission apparatus applied to a network device, comprising:

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

51. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any of claims 1 to 12 or the method of any of claims 13 to 24.