CN115150946A

CN115150946A - Information processing method and device and readable storage medium

Info

Publication number: CN115150946A
Application number: CN202110347998.2A
Authority: CN
Inventors: 汤文
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2022-10-04

Abstract

The application discloses an information processing method, an information processing device and a readable storage medium, which relate to the technical field of communication and aim to improve the reliability of data transmission. The method comprises the following steps: the network equipment sends a transmission time deviation value to the terminal; the network equipment carries out blind detection on the uplink signal sent by the terminal; the starting transmission time of the uplink signal is determined according to the transmission time offset value, and the starting transmission time of the uplink signal is autonomously selected by the terminal from the value range of the transmission time; the transmission starting time of the uplink signal meets the following conditions: the starting transmission time of the uplink signal is positioned after the ending time of the downlink signal of the network equipment; or, the transmission starting time of the uplink signal is located after the time corresponding to the ending position of the time-frequency resource for receiving the downlink signal of the network equipment; the downlink signal is used to trigger the transmission of the uplink signal. The embodiment of the application can improve the reliability of data transmission and shorten the blind detection time of the network equipment.

Description

Information processing method and device and readable storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to an information processing method and apparatus, and a readable storage medium.

Background

The satellite communication has two working modes, one is a bent pipe mode, the satellite only transparently forwards signals without any processing, the terminal communicates with the base station, and the other is regenerative communication, at the moment, the satellite can detect the information of the received signals, process and forward the information, complete the function of the base station and connect the terminal and the base station. In satellite communications, the connection between the end user and the satellite is referred to as the user link, and the connection between the satellite and the base station is the feeder link.

Fig. 1 is a schematic time delay diagram of an NTN (Non-Terrestrial-Networks) system. For the bent-tube mode, when the terminal and the base station perform data communication, the terminal and the base station experience a transmission delay T2 of the feeder link and a transmission delay T1 of the user link, and RTT (round trip time) of transmission is 2 × (T1 + T2). In the regeneration mode, the terminal and satellite transmission delays include the user link transmission delay T1, with an RTT of 2 × T1.

In uplink and downlink timing scheduling of the NTN system, in order to ensure stable operation of the timing, a base station needs to consider uplink TA (Time Advance) of a user and processing Time of a terminal when scheduling uplink and downlink data transmission. In the prior art, the value of the uplink transmission time is a range value, and the terminal can autonomously select the transmission time within the range, in which case, the transmission time of the terminal needs to perform timing advance of TA. In general, the TA value of satellite communication is relatively large. Therefore, in the conventional manner, the uplink signal is transmitted before the reception of the related downlink signal is completed, thereby affecting the reliability of data transmission and the blind detection time of the network device.

Disclosure of Invention

The embodiment of the application provides an information processing method, an information processing device and a readable storage medium, so as to improve the reliability of data transmission and shorten the blind test time of network equipment.

In a first aspect, an embodiment of the present application provides an information processing method, including:

the network equipment sends a transmission time deviation value to the terminal;

the network equipment performs blind detection on the uplink signal sent by the terminal;

the transmission starting time of the uplink signal is determined according to the transmission time offset value, and the terminal autonomously selects the transmission starting time of the uplink signal from a transmission time value range;

the transmission starting time of the uplink signal meets the following conditions:

the transmission starting time of the uplink signal is positioned after the ending time of the downlink signal of the network equipment; or, the transmission start time of the uplink signal is located after the time corresponding to the end position of the time-frequency resource for receiving the downlink signal of the network device;

the downlink signal is used for triggering the sending of the uplink signal.

Wherein the sum of the transmission time offset value and the first value is greater than or equal to a second value;

the first value is the maximum value of the transmission time value range corresponding to the uplink signal;

the second value is the timing advance of the terminal or the maximum value of the timing advance corresponding to the cell to which the terminal belongs.

Wherein the value of the transmission time offset value is as follows: a minimum value of the timing advance corresponding to the cell to which the terminal belongs, or a maximum value of the timing advance corresponding to the cell to which the terminal belongs, or the maximum value of the timing advance corresponding to the cell to which the terminal belongs

Wherein the method further comprises:

the network equipment receives the timing advance of the terminal reported by the terminal;

the network equipment determines an offset value adjustment value or an adjusted transmission time offset value according to the timing advance of the terminal;

and the network equipment sends the offset value adjustment value or the adjusted transmission time offset value to the terminal.

Wherein the offset adjustment value is a difference between a third value and the transmission time offset value;

the third value is determined according to the timing advance of the terminal, or the third value is the timing advance of the terminal.

Wherein the method further comprises:

the network device predicts an offset value adjustment value or a transmission time offset value after adjustment;

The blind detection of the uplink signal sent by the terminal by the network device includes:

the network equipment determines a blind detection time range;

the network equipment detects the uplink signal within the blind detection time range;

wherein, the minimum value of the blind detection time range is: t0+ M;

the maximum value of the blind detection time range is as follows: t0+ M + (N-L) + P;

wherein, T0 represents an end time of the downlink signal or a time corresponding to an end position of a time-frequency resource for receiving the downlink signal; m represents the minimum value of the corresponding round trip delay in the cell to which the terminal belongs; n represents the transmission time offset value; l represents the minimum value of the timing advance corresponding to the cell to which the terminal belongs; p represents the first numerical value; or alternatively

Wherein, T0 represents an end time of the downlink signal or a time corresponding to an end position of a time-frequency resource for receiving the downlink signal; m represents the corresponding round-trip delay of the terminal; n represents the transmission time offset value; l represents a timing advance of the terminal; p represents the first numerical value;

wherein T0, M, N, L and P are more than or equal to 0.

In a second aspect, an embodiment of the present application further provides an information processing method, including:

a terminal receives a transmission time offset value sent by network equipment;

the terminal sends an uplink signal to the network equipment;

the transmission starting time of the uplink signal is positioned after the ending time of the downlink signal of the network equipment; or, the transmission starting time of the uplink signal is located after the time corresponding to the ending position of the time-frequency resource for receiving the downlink signal of the network device;

the downlink signal is used for triggering the sending of the uplink signal.

Wherein the method further comprises:

the terminal sends the timing advance of the terminal to the network equipment;

the terminal receives an offset value adjustment value sent by the network equipment; or, the terminal receives the adjusted transmission time offset value sent by the network device.

Wherein the method further comprises:

and the terminal receives the offset value adjustment value predicted by the network equipment or the predicted adjusted transmission time offset value.

Wherein the method further comprises:

if receiving an offset value adjustment value sent by the network equipment, the terminal obtains an adjusted transmission time offset value according to the offset value adjustment value;

wherein the adjusted transmission time offset value is equal to the sum of the transmission time offset value and the offset value adjustment value.

In a third aspect, an embodiment of the present application further provides an information processing apparatus, applied to 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 operations:

transmitting a transmission time offset value to the terminal;

performing blind detection on an uplink signal sent by the terminal;

the downlink signal is used for triggering the sending of the uplink signal.

Wherein the processor is configured to read the computer program in the memory and perform the following operations:

receiving the timing advance of the terminal reported by the terminal;

determining an offset value adjusting value or an adjusted transmission time offset value according to the timing advance of the terminal;

and sending the offset value adjustment value or the adjusted transmission time offset value to the terminal.

the third numerical value is determined according to the timing advance of the terminal, or the third numerical value is the timing advance of the terminal.

predicting an offset value adjustment value or predicting an adjusted transmission time offset value;

determining a blind detection time range;

detecting the uplink signal within the blind detection time range;

wherein, the minimum value of the blind detection time range is: t0+ M;

wherein, T0 represents an end time of the downlink signal or a time corresponding to an end position of a time-frequency resource for receiving the downlink signal; m represents the minimum value of the corresponding round trip delay in the cell to which the terminal belongs; n denotes the transmission time offset value; l represents the minimum value of the timing advance corresponding to the cell to which the terminal belongs; p represents the first numerical value; or

Wherein, T0 represents an end time of the downlink signal or a time corresponding to an end position of a time-frequency resource for receiving the downlink signal; m represents the round-trip delay corresponding to the terminal; n denotes the transmission time offset value; l represents a timing advance of the terminal; p represents the first numerical value;

wherein T0, M, N, L and P are more than or equal to 0.

In a fourth aspect, an embodiment of the present application further provides an information processing apparatus, which is applied to a terminal and includes a memory, a transceiver, and a processor:

receiving a transmission time offset value sent by network equipment;

sending an uplink signal to the network device;

the downlink signal is used for triggering the sending of the uplink signal.

sending the timing advance of the terminal to the network equipment;

receiving an offset value adjustment value sent by the network equipment; or receiving the adjusted transmission time offset value sent by the network equipment.

receiving the offset value adjustment value predicted by the network device or the predicted adjusted transmission time offset value.

if receiving an offset value adjustment value sent by the network equipment, obtaining an adjusted transmission time offset value according to the offset value adjustment value;

In a fifth aspect, an embodiment of the present application further provides an information processing apparatus, which is applied to a network device, and includes:

a first transmitting unit for transmitting a transmission time offset value to a terminal;

the first processing unit is used for performing blind detection on the uplink signal sent by the terminal;

the downlink signal is used for triggering the sending of the uplink signal.

In a sixth aspect, an embodiment of the present application further provides an information processing apparatus, which is applied to a terminal, and includes:

a first receiving unit, configured to receive a transmission time offset value sent by a network device;

a first sending unit, configured to send an uplink signal to the network device;

the transmission starting time of the uplink signal is determined according to the transmission time deviation value, and the terminal autonomously selects the transmission starting time of the uplink signal from a transmission time value range;

the downlink signal is used for triggering the sending of the uplink signal.

In a seventh aspect, this application embodiment further provides a 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 steps in the information processing method described above.

In the embodiment of the application, the network device sends the transmission time offset value to the terminal, so that the terminal can autonomously select the transmission start time of the uplink signal from the transmission time value range according to the transmission time offset value and ensure that the transmission start time of the uplink signal is positioned behind the end time of the downlink signal of the network device; or, the transmission start time of the uplink signal is located after the time corresponding to the end position of the time-frequency resource for receiving the downlink signal of the network device. Because the transmission starting time of the uplink signal meets the above conditions, the uplink signal sent by the terminal is after the downlink signal for triggering the uplink signal sending is finished or after the time corresponding to the end position of the time-frequency resource of the downlink signal, so that the collision between the uplink signal and the downlink signal of the terminal can be avoided, and the reliability of data transmission is improved; meanwhile, the network equipment can determine the time when the uplink signal of the terminal reaches the network equipment more accurately by combining the transmission time deviation value, so that the blind detection time of the network equipment can be shortened.

Drawings

FIG. 1 is a schematic delay diagram of an NTN system;

FIG. 2 is a flowchart of an information processing method provided in an embodiment of the present application;

FIG. 3 is a second flowchart of an information processing method according to an embodiment of the present application;

FIG. 4 is a schematic diagram of signal transmission provided by an embodiment of the present application;

fig. 5 is one of the structural diagrams of an information processing apparatus provided in an embodiment of the present application;

fig. 6 is a second structural diagram of an information processing apparatus according to an embodiment of the present application;

fig. 7 is a third structural diagram of an information processing apparatus according to an embodiment of the present application;

fig. 8 is a fourth structural diagram of an information processing apparatus according to an embodiment of the present application.

Detailed Description

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.

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 only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The embodiment of the application provides an information processing method, an information processing device and a readable storage medium, which are used for improving the reliability of data transmission.

The method and the device are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

Referring to fig. 1, fig. 1 is a flowchart of an information processing method provided in an embodiment of the present application, and as shown in fig. 1, includes the following steps:

step 101, the network device sends a transmission time offset value to the terminal.

In this embodiment, the network device may send the transmission time offset value (Start _ offset _ for _ UL) to the terminal through a broadcast Information SIB (System Information Block) or an RRC (Radio Resource Control) signaling. The transmission time offset value is used to ensure that the transmission of the uplink signal of the terminal is after the reception of the downlink signal, or after the time corresponding to the end position of the time-frequency resource for receiving the downlink signal of the network device. The downlink signal refers to a signal that triggers transmission of the uplink signal.

And the transmission starting time of the uplink signal is determined according to the transmission time deviation value, and is autonomously selected by the terminal from a transmission time value range. The transmission time range refers to a time range from which the terminal can select the transmission start time of the uplink signal. In the embodiment of the present application, the transmission start time of the uplink signal satisfies the following condition:

the transmission starting time of the uplink signal is positioned after the ending time of the downlink signal of the network equipment; or, the transmission start time of the uplink signal is located after the time corresponding to the end position of the time-frequency resource for receiving the downlink signal of the network device; the downlink signal is used for triggering the sending of the uplink signal.

For example, the starting transmission time of the uplink signal may be the last symbol or the last subframe of the received downlink signal, or after the last symbol or the last subframe of the received downlink signal. In practical application, if the terminal does not receive the corresponding downlink signal in the time-frequency resource configured by the network device and used for receiving the downlink signal, the terminal will perform retransmission of the preamble. At this time, the transmission start time of the uplink signal is a time corresponding to the end position of the time-frequency resource configured by the network device for receiving the downlink signal or a time after the time corresponding to the end position.

Specifically, the sum of the transmission time offset value and the first value is greater than or equal to the second value. The first value is the maximum value of the transmission time value range corresponding to the uplink signal; the second value is the timing advance of the terminal or the maximum value of the timing advance corresponding to the cell to which the terminal belongs.

When the network equipment can obtain the timing advance of the terminal, the second numerical value is the timing advance of the terminal; and when the network equipment cannot obtain the timing advance of the terminal, the second value is the maximum value of the timing advance corresponding to the cell to which the terminal belongs.

In practical applications, the value of the transmission time offset value is: the method comprises the steps that the minimum value min (UE _ TA) of the timing advance corresponding to the cell to which the terminal belongs, or the maximum value max (UE _ TA) of the timing advance corresponding to the cell to which the terminal belongs, or the average value (min (UE _ TA) + max (UE _ TA)) of the minimum value and the maximum value/2. The minimum value min (UE _ TA) of the timing advance corresponding to the cell to which the terminal belongs or the maximum value max (UE _ TA) of the timing advance corresponding to the cell to which the terminal belongs may be calculated based on the maximum elevation angle and the minimum elevation angle of the cell relative to the satellite.

The timing advance of the terminal is determined according to the real-time position of the terminal and the position of a satellite; the timing advance corresponding to the cell to which the terminal belongs is determined according to the coverage area of the cell, the elevation angle of the cell, the height of a satellite, the radius of the cell and the like. Then, based on the maximum elevation angle and the minimum elevation angle of the cell relative to the satellite, the maximum value and the minimum value of the timing advance corresponding to the cell to which the terminal belongs may be determined, respectively, so that the maximum value of the timing advance corresponding to the cell to which the terminal belongs may be obtained.

The value of the transmission time offset value may refer to a cell radius, a usage scenario (IoT (Internet of Things) or other scenarios), and whether the terminal in the cell can report timing advance (UE _ TA) of the terminal or UE _ TA related information.

For example, for a scenario in which a terminal in a cell cannot report UE _ TA or UE _ TA related information and the radius of the cell is relatively small, a value of the transmission time offset value may be considered as min (UE _ TA). At this time, because the radius of the cell is small, the change of the UE _ TA in the cell is relatively small, and because the value of the uplink and downlink transmission time is a range value, the terminal can select a time sequence position which satisfies the requirement of sending after receiving to send data. For another example, in a scenario where UE _ TA or UE _ TA related information can be reported, for example, in a scenario where the cell radius is large, the value of the tti may be (min (UE _ TA) + max (UE _ TA))/2, so as to reduce the number of users whose tti needs to be adjusted.

And 102, the network equipment performs blind detection on the uplink signal sent by the terminal.

In this step, a blind detection time range is determined, and the uplink signal is detected within the blind detection time range.

Wherein, the minimum value of the blind detection time range is: t0+ M;

wherein, T0 represents an end time of the downlink signal or a time corresponding to an end position of a time-frequency resource for receiving the downlink signal; m represents the minimum value of the corresponding round trip delay in the cell to which the terminal belongs; n denotes the transmission time offset value; l represents the minimum value of the timing advance corresponding to the cell to which the terminal belongs; p represents the first numerical value. That is, if the network device cannot obtain the timing advance of the terminal, the network device determines the blind detection time according to the minimum value of the corresponding round trip delay in the cell to which the terminal belongs, the minimum value of the timing advance corresponding to the cell to which the terminal belongs, and the like.

Or, T0 represents an end time of the downlink signal or a time corresponding to an end position of a time-frequency resource for receiving the downlink signal; m represents the round-trip delay corresponding to the terminal; n represents the transmission time offset value; l represents a timing advance of the terminal; p represents the first numerical value. That is, if the network device can obtain the timing advance of the terminal, the network device determines the blind detection time according to the minimum value of the round-trip delay corresponding to the terminal, the timing advance of the terminal, and the like.

Wherein T0, M, N, L and P are more than or equal to 0.

Because the transmission starting time of the uplink signal meets the above conditions, the uplink signal sent by the terminal is after the downlink signal for triggering the uplink signal to be sent is finished or after the time corresponding to the end position of the time-frequency resource of the downlink signal, so that the collision between the uplink signal and the downlink signal of the terminal can be avoided, and the reliability of data transmission is improved. Meanwhile, the network equipment can determine the time when the uplink signal of the terminal reaches the network equipment more accurately by combining the transmission time deviation value, so that compared with the prior art, the blind detection time of the network equipment can be shortened, and blind detection resources are saved.

On the basis of the above embodiment, the network device may further adjust the transmission time offset value, and send or not send the adjustment information to the terminal. The adjustment information includes a variation of the transmission time offset value, or a changed transmission time offset value.

Specifically, the network device receives the timing advance of the terminal reported by the terminal. And then, the network equipment determines an offset value adjustment value or an adjusted transmission time offset value according to the timing advance of the terminal, and sends the offset value adjustment value or the adjusted transmission time offset value to the terminal. By the method, the network equipment can determine the blind test time more accurately, so that the blind test time required by subsequent network equipment is reduced.

For example, assuming that the timing advance of the terminal reported by the terminal is UE _ TA and the current transmission time offset value is min (UE _ TA), the adjustment value may be: UE _ TA-min (UE _ TA).

In addition, the network device can also receive the information related to the timing advance reported by the terminal, and further derive the timing advance of the terminal from the information.

The offset value adjustment value is a difference value between a third value and the transmission time offset value, where the third value is determined according to the timing advance of the terminal, or the third value is the timing advance of the terminal. For example, the third value is a timing advance determination value of the reference terminal, which may be different from the timing advance, or the like. Or, the timing advance may be calculated to obtain a value, and the value is used as a third value.

Alternatively, the network device may also measure an offset value adjustment value or predict an adjusted transmission time offset value. For example, the network device may make predictions based on conditions such as satellite movement and terminal motion. And then, the network equipment sends the offset value adjustment value or the adjusted transmission time offset value to the terminal. By means of issuing the offset value adjusting value, more information bits can be saved, and therefore scheduling resources are saved.

Referring to fig. 2, fig. 2 is a flowchart of an information processing method provided in an embodiment of the present application, and as shown in fig. 2, includes the following steps:

step 201, the terminal receives a transmission time offset value sent by the network device.

Wherein the terminal may receive the transmission time offset value transmitted by the network device through broadcast information SIB or RRC signaling, or the like.

Step 202, the terminal sends an uplink signal to the network device.

the downlink signal is used for triggering the sending of the uplink signal.

To further avoid collision between signals, the sum of the transmission time offset value and the first value is greater than or equal to a second value; the first value is the maximum value of the transmission time value range corresponding to the uplink signal; the second value is the timing advance of the terminal or the maximum value of the timing advance corresponding to the cell to which the terminal belongs. When the network equipment can obtain the timing advance of the terminal, the second numerical value is the timing advance of the terminal; and when the network equipment cannot obtain the timing advance of the terminal, the second value is the maximum value of the timing advance corresponding to the cell to which the terminal belongs.

The uplink transmission starting time is autonomously selected by the terminal within a certain transmission time value range, so that the selected uplink transmission starting time can meet the requirements when the terminal selects the uplink transmission starting time.

Because the transmission starting time of the uplink signal meets the above conditions, the uplink signal sent by the terminal is after the downlink signal for triggering the uplink signal to be sent is finished or after the time corresponding to the end position of the time-frequency resource of the downlink signal, so that the collision between the uplink signal and the downlink signal of the terminal can be avoided, and the reliability of data transmission is improved. Meanwhile, the network equipment can determine the time when the uplink signal of the terminal reaches the network equipment more accurately by combining the transmission time deviation value, so that the blind detection time of the network equipment can be shortened and blind detection resources are saved compared with the prior art.

On the basis of the above embodiment, in order to further avoid collision between signals and shorten the blind detection time of the network device, the terminal may further send the timing advance of the terminal to the network device. Then, the terminal can also receive the offset value adjustment value sent by the network equipment; or, the terminal receives the adjusted transmission time offset value sent by the network device. Or, the terminal receives the offset value adjustment value predicted by the network device or the predicted adjusted transmission time offset value.

If the adjusted transmission time offset value is obtained, the terminal can directly determine the uplink transmission starting time according to the adjusted transmission time offset value. If receiving an offset value adjustment value sent by the network equipment, the terminal obtains an adjusted transmission time offset value according to the offset value adjustment value; wherein the adjusted transmission time offset value is equal to the sum of the transmission time offset value and the offset value adjustment value.

The implementation process of the embodiment of the present application is described in detail below with reference to different application scenarios. The network device is described by taking a base station as an example.

In one embodiment, the retransmission process of preamble in NR (New Radio) and NB-IoT (Narrow Band Internet of Things) is taken as an example.

For a scenario in which a terminal in a cell cannot report UE _ TA, start _ offset _ for _ UL = max (UE _ TA) may be set, so that it is ensured that uplink signals of all terminals in the cell are sent after receiving downlink signals. If the base station knows min (UE _ TA) of the terminal in the cell in advance, at this time, the blind detection time of the base station for preamble retransmission is from T0+ RTT _min To start, to T0+ RTT _min + Kmax (Start _ offset _ for _ UL-min (UE _ TA)). Wherein, T0 represents an end time of a downlink signal for triggering transmission of an uplink signal or a time corresponding to an end position of a time-frequency resource for receiving the downlink signal, and RTT _min Representing the minimum value of the corresponding round trip delay in the cell to which the terminal belongs; start _ offset _ for _ UL represents the transmission time offset value; min (UE _ TA) represents a minimum value indicating a timing advance corresponding to a cell to which the terminal belongs; kmax represents the maximum value of the transmission time range corresponding to the uplink signal.

For terminalWhen reporting information related to the uplink transmission timing advance is available, the base station may adjust, for example, start _ offset _ for _ UL _ new to be equal to the TA value reported by the terminal according to the reporting information of the terminal, that is, start _ offset _ for _ UL _ new = UE _ TA. At this time, the base station may notify the terminal Start _ offset _ for _ UL change value, i.e., (UE _ TA-Start _ offset _ for _ UL _ old), in the relevant downlink control information. In the above example, start _ offset _ for _ UL _ old = max (UE _ TA), then the variation value is UE _ TA-max (UE _ TA). Therefore, the blind detection time of the base station for the uplink signal can be reduced as much as possible. At this time, the blind detection time of the base station for preamble retransmission is from T0+ RTT _UE To start, to T0+ RTT _UE +(Start_offset_for_UL_new-UE_TA)+Kmax＝T0+RTT _UE RTT Up to + Kmax _UE Indicating the corresponding round trip delay of the terminal.

The retransmission process for preambles in NR and NB-IoT is shown in fig. 3. The base station transmits an RAR (Random Access Response) at time T0. The terminal receives RAR at time T0+ T _ D (T _ D represents a transmission delay between the base station and the terminal). According to the transmission time offset value sent by the base station, the terminal determines that preamble retransmission with timing advance is carried out at the time of T0+ T _ D + K + Start _ offset _ for _ UL-UE _ TA. Suppose that the base station determines the blind detection range according to the above method as follows: t0+2 × T _ D to T0+2 × T _ D + Kmax + Start _ offset _ for _ UL-UE _ TA. Suppose that the base station detects the uplink signal at time T0+2 × T _ D + K + Start _ offset _ for _ UL-UE _ TA, where K is greater than or equal to 0 and less than or equal to Kmax.

When the cell radius is relatively large, start _ offset _ for _ UL = (min (UE _ TA) + max (UE _ TA))/2 may be set. In this case, it is equivalent to remove a part of unusable time from the transmission time range, so as to satisfy the requirement that the uplink signal transmission of the terminal is to add a processing delay after the downlink reception. Therefore, the blind detection time of the base station for a large number of terminals in the cell can be reduced. If the base station knows the TA of the user in advance, in this case, for the case that UE _ TA > Start _ offset _ for _ UL, the blind detection time of the base station for preamble retransmission is from T0+ RTT _UE To T0+ RTT _UE RTT (Start _ offset _ for _ UL-UE _ TA) + Kmax _UE Indicating the corresponding round trip delay of the terminal.

In one embodiment, the procedure of PRACH (Physical Random Access Channel) transmission scheduled by PDCCH (Physical downlink control Channel) order in NR, NB-IoT and eMTC (enhanced Machine-Type Communication) is taken as an example. If the base station knows the TA of the terminal in advance, a preconfigured Start _ offset _ for _ UL = min (UE _ TA) may be set at this time. In the manner described above, the blind detection time of the base station is from T0+ RTT _UE To start, to T0+ RTT _UE RTT (Start _ offset _ for _ UL-UE _ TA) + Kmax _UE Indicating the corresponding round trip delay of the terminal. If the terminal reports UE _ TA, the base station may dynamically adjust Start _ offset _ for _ UL _ new = UE _ TA. Therefore, in the mode, the network can more accurately deduce the detection time of the PRACH scheduled by the PDCCH order, thereby reducing the resource waste required by blind detection.

In one embodiment, a PUSCH (Physical Uplink Shared Channel) transmission process scheduled by RAR in NB-IoT is taken as an example.

In the manner described above, the blind detection time of the base station is from T0+ RTT _UE To T0+ RTT _UE RTT (Start _ offset _ for _ UL-UE _ TA) + Kmax _UE Indicating the corresponding round trip delay of the terminal. If the terminal reports UE _ TA, the base station dynamically adjusts Start _ offset _ for _ UL _ new = UE _ TA. Therefore, in this way, the network can more accurately deduce the detection time of the PUSCH scheduled by the RAR, thereby reducing the resource waste required by blind detection.

If the base station cannot know the TA of the user in advance and does not adjust the offset value, the starting time of the blind detection is the time of the minimum RTT from the last symbol of the RAR.

In one embodiment, a process of sending an SRS (Sounding Reference Signal) in the eMTC is taken as an example. For scheduling timing of SRS in eMTC, the SRS transmission time may be an available resource that is at least 4 subframes away from the last symbol of PDCCH, and the detection time is also a range value for the base station.

For example, in the manner described above, the blind detection time of the base station is from T0+ RTT _UE To start, to T0+ RTT _UE RTT (Start _ offset _ for _ UL-UE _ TA) + Kmax _UE Indicating the corresponding round trip delay of the terminal. If the terminal reports UE _ TA, the base station dynamically adjusts Start _ offset _ for _ UL _ new = UE _ TA. Therefore, in this way, the network can more accurately deduce the detection time of the PDCCH-scheduled SRS, thereby reducing the waste of resources required for blind detection.

If the base station cannot know the TA of the user in advance and does not adjust the offset value, the starting time of the blind detection is the time of the minimum RTT from the last symbol of the downlink scheduling information.

It can be seen from the above description that, in view of the problems that the uplink and downlink scheduling timing in the NTN system may cause unreliable signal transmission and overlong blind detection time of the base station, according to the embodiment of the present application, the uplink signal sent by the terminal is after the downlink signal used for triggering the uplink signal sending is ended or after the time corresponding to the end position of the time-frequency resource of the downlink signal, so that collision between the uplink signal and the downlink signal of the terminal can be avoided, and reliability of data transmission is improved. Meanwhile, the network equipment can determine the time when the uplink signal of the terminal reaches the network equipment more accurately by combining the transmission time deviation value, so that the blind detection time of the network equipment can be shortened and blind detection resources are saved compared with the prior art.

The technical scheme provided by the embodiment of the application can be suitable for various systems, particularly 5G systems. For example, the applicable system may be a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) system, a long term evolution (long term evolution, LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, an LTE-a (long term evolution) system, a universal mobile system (universal mobile telecommunications system, UMTS), a universal internet Access (WiMAX) system, a New Radio Network (NR) system, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5 GS), and the like.

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 called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile phone (or called a "cellular" phone) and a computer having a mobile terminal device, for example, 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 languages and/or data with the RAN. 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 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 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), a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB) or an e-NodeB) in a Long Term Evolution (LTE) System, a 5G Base Station (gNB) in a 5G network architecture (next generation System), a Home evolved Node B (HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico), 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.

As shown in fig. 4, an information processing apparatus according to an embodiment of the present application, applied to a network device, includes: the processor 400, which is used to read the program in the memory 420, executes the following processes:

transmitting a transmission time offset value to the terminal;

carrying out blind detection on an uplink signal sent by the terminal;

the downlink signal is used for triggering the sending of the uplink signal.

Where in fig. 4, the bus architecture may include any number of interconnected buses and bridges, with various circuits of one or more processors, represented by processor 400, and memory, represented by memory 420, 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 410 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The processor 400 is responsible for managing the bus architecture and general processing, and the memory 420 may store data used by the processor 400 in performing operations.

The processor 410 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.

The processor 400 is responsible for managing the bus architecture and general processing, and the memory 420 may store data used by the processor 400 in performing operations.

Wherein the value of the transmission time offset value is as follows: the timing advance value of the terminal is obtained by calculating the minimum value of the timing advance corresponding to the cell to which the terminal belongs, or the maximum value of the timing advance corresponding to the cell to which the terminal belongs, or the average value of the minimum value and the maximum value.

When the network equipment can obtain the timing advance of the terminal, the second numerical value is the timing advance of the terminal;

and when the network equipment cannot obtain the timing advance of the terminal, the second value is the maximum value of the timing advance corresponding to the cell to which the terminal belongs.

The processor 400 is also adapted to read the program and perform the following steps:

receiving the timing advance of the terminal reported by the terminal;

determining an offset value adjustment value or an adjusted transmission time offset value according to the timing advance of the terminal;

the network equipment determines a blind detection time range;

wherein, the minimum value of the blind detection time range is: t0+ M;

wherein, T0 represents an end time of the downlink signal or a time corresponding to an end position of a time-frequency resource for receiving the downlink signal; m represents the minimum value of the corresponding round trip delay in the cell to which the terminal belongs; n represents the transmission time offset value; l represents the minimum value of the timing advance corresponding to the cell to which the terminal belongs; p represents the first numerical value; or

Wherein, T0 represents an end time of the downlink signal or a time corresponding to an end position of a time-frequency resource for receiving the downlink signal; m represents the round-trip delay corresponding to the terminal; n represents the transmission time offset value; l represents a timing advance of the terminal; p represents the first numerical value; wherein T0, M, N, L and P are more than or equal to 0.

It should be noted that the apparatus provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.

As shown in fig. 5, a terminal according to an embodiment of the present application includes: the processor 500, which is used to read the program in the memory 520, executes the following processes:

receiving a transmission time offset value sent by network equipment;

sending an uplink signal to the network device;

the downlink signal is used for triggering the sending of the uplink signal.

A transceiver 510 for receiving and transmitting data under the control of the processor 500.

Wherein in fig. 5, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 500, and various circuits, represented by memory 520, 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 510 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. For different user devices, the user interface 530 may also be an interface capable of interfacing externally to a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 500 in performing operations.

The processor 510 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.

The processor is used for executing any one of the methods provided by the embodiment of the application according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.

The processor 500 is further adapted to read the program and perform the following steps:

sending the timing advance of the terminal to the network equipment;

The processor 500 is further configured to read the program and execute the following steps:

It should be noted that the apparatus provided in the embodiment of the present application 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 omitted here.

As shown in fig. 6, an information processing apparatus according to an embodiment of the present application, applied to a network device, includes:

a first transmitting unit 601, configured to transmit a transmission time offset value to a terminal; a first processing unit 602, configured to perform blind detection on an uplink signal sent by the terminal;

the downlink signal is used for triggering the sending of the uplink signal.

Wherein the value of the transmission time offset value is: the method comprises the steps of obtaining a minimum value of timing advance corresponding to a cell to which the terminal belongs, or obtaining a maximum value of the timing advance corresponding to the cell to which the terminal belongs, or obtaining an average value of the minimum value and the maximum value.

Wherein the apparatus may further comprise:

a first receiving unit, configured to receive a timing advance of the terminal reported by the terminal;

a first determining unit, configured to determine an offset value adjustment value or an adjusted transmission time offset value according to the timing advance of the terminal;

a second sending unit, configured to send the offset value adjustment value or the adjusted transmission time offset value to the terminal.

Wherein the apparatus may further comprise:

a prediction unit for predicting the offset value adjustment value or the adjusted transmission time offset value;

a third sending unit, configured to send the offset value adjustment value or the adjusted transmission time offset value to the terminal.

Wherein the first processing unit comprises:

the determining subunit is used for determining a blind detection time range; a detection subunit, configured to detect the uplink signal within the blind detection time range;

wherein, the minimum value of the blind detection time range is: t0+ M;

Wherein, T0 represents an end time of the downlink signal or a time corresponding to an end position of a time-frequency resource for receiving the downlink signal; m represents the round-trip delay corresponding to the terminal; n denotes the transmission time offset value; l represents a timing advance of the terminal; p represents the first numerical value; wherein T0, M, N, L and P are more than or equal to 0.

As shown in fig. 7, an information processing apparatus according to an embodiment of the present application, applied to a terminal, includes:

a first receiving unit 701, configured to receive a transmission time offset value sent by a network device; a first sending unit 702, configured to send an uplink signal to the network device;

the downlink signal is used for triggering the sending of the uplink signal.

Wherein the apparatus may further comprise:

a second sending unit, configured to send the timing advance of the terminal to the network device;

a second receiving unit, configured to receive the offset value adjustment value sent by the network device; or receiving an adjusted transmission time offset value sent by the network device.

Wherein the apparatus may further comprise:

a third receiving unit, configured to receive the offset value adjustment value predicted by the network device or the predicted adjusted transmission time offset value.

Wherein the apparatus may further comprise:

the first processing unit is used for obtaining an adjusted transmission time offset value according to the offset value adjusting value if the offset value adjusting value sent by the network equipment is received;

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. 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.

The embodiment of the present application further provides a readable storage medium, where a program is stored on the readable storage medium, and when the program is executed by a processor, the program implements each process of the above-mentioned information processing method embodiment, and can achieve the same technical effect, and for avoiding repetition, the detailed description is omitted here. The 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 memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical memory (e.g., CD, DVD, BD, HVD, etc.), and semiconductor memory (e.g., ROM, EPROM, EEPROM, nonvolatile memory (NAND FLASH), solid State Disk (SSD)), etc.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. With this understanding, the technical solutions of the present application or portions thereof that contribute to the prior art may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes several instructions for enabling a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the methods according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the present embodiments are not limited to those precise embodiments, which are intended to be illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope of the appended claims.

Claims

1. An information processing method, characterized by comprising:

the network equipment carries out blind detection on the uplink signal sent by the terminal;

the downlink signal is used for triggering the sending of the uplink signal.

2. The method of claim 1,

the sum of the transmission time offset value and the first value is greater than or equal to a second value;

3. The method of claim 2, wherein the tti offset value is selected from the group consisting of: the timing advance value of the terminal is obtained by calculating the minimum value of the timing advance corresponding to the cell to which the terminal belongs, or the maximum value of the timing advance corresponding to the cell to which the terminal belongs, or the average value of the minimum value and the maximum value.

4. The method of claim 1, further comprising:

5. The method of claim 4, wherein the offset adjustment value is a difference between a third value and the transmission time offset value;

6. The method of claim 1, further comprising:

7. The method according to claim 2, wherein the performing, by the network device, blind detection on the uplink signal sent by the terminal comprises:

the network equipment determines a blind detection time range;

wherein, the minimum value of the blind detection time range is: t0+ M;

Wherein, T0 represents an end time of the downlink signal or a time corresponding to an end position of a time-frequency resource for receiving the downlink signal; m represents the round-trip delay corresponding to the terminal; n represents the transmission time offset value; l represents a timing advance of the terminal; p represents the first numerical value;

wherein T0, M, N, L and P are more than or equal to 0.

8. An information processing method characterized by comprising:

a terminal receives a transmission time offset value sent by network equipment;

the terminal sends an uplink signal to the network equipment;

the downlink signal is used for triggering the sending of the uplink signal.

9. The method of claim 8,

10. The method of claim 8, further comprising:

the terminal sends the timing advance of the terminal to the network equipment;

and the terminal receives the offset value adjustment value sent by the network equipment, or the terminal receives the adjusted transmission time offset value sent by the network equipment.

11. The method of claim 8, further comprising:

12. The method according to claim 10 or 11, characterized in that the method further comprises:

13. An information processing apparatus applied to a network device, comprising a memory, a transceiver, a processor:

transmitting a transmission time offset value to a terminal;

performing blind detection on an uplink signal sent by the terminal;

the downlink signal is used for triggering the sending of the uplink signal.

14. The apparatus of claim 13, wherein the sum of the transmission time offset value and the first value is greater than or equal to a second value;

15. The apparatus of claim 13, wherein the processor is configured to read the computer program in the memory and perform the following:

receiving the timing advance of the terminal reported by the terminal;

16. The apparatus of claim 15, wherein the offset adjustment value is a difference between a third value and the tti offset value;

17. The apparatus of claim 13, wherein the processor is configured to read the computer program in the memory and perform the following:

18. The apparatus of claim 14, wherein the processor is configured to read the computer program in the memory and perform the following operations:

determining a blind detection time range;

detecting the uplink signal within the blind detection time range;

wherein, the minimum value of the blind detection time range is: t0+ M;

wherein T0, M, N, L and P are more than or equal to 0.

19. An information processing apparatus applied to a terminal, comprising a memory, a transceiver, a processor:

receiving a transmission time offset value sent by network equipment;

sending an uplink signal to the network device;

the downlink signal is used for triggering the sending of the uplink signal.

20. The apparatus of claim 19,

21. The apparatus of claim 19, wherein the processor is configured to read the computer program stored in the memory and perform the following:

sending the timing advance of the terminal to the network equipment;

22. The apparatus of claim 19, wherein the processor is configured to read the computer program in the memory and perform the following:

23. The apparatus according to claim 21 or 22, wherein the processor is configured to read the computer program stored in the memory and perform the following:

24. An information processing apparatus applied to a network device, comprising:

the downlink signal is used for triggering the sending of the uplink signal.

25. An information processing apparatus applied to a terminal, comprising:

the downlink signal is used for triggering the sending of the uplink signal.

26. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to execute the method of any one of claims 1 to 7; alternatively, the computer program is for causing the processor to perform the method of any of claims 8 to 12.