CN110324906B

CN110324906B - Signal transmission method, device and terminal

Info

Publication number: CN110324906B
Application number: CN201810271012.6A
Authority: CN
Inventors: 孙晓东; 潘学明; 冯三军
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2018-03-29
Filing date: 2018-03-29
Publication date: 2023-02-21
Anticipated expiration: 2038-03-29
Also published as: CN110324906A

Abstract

The embodiment of the invention provides a signal transmission method, a signal transmission device and a terminal, relates to the technical field of communication, and aims to solve the problem of poor uplink signal receiving performance caused by intersymbol interference or signal distortion due to the influence of transition time of the terminal in the prior art. The method comprises the following steps: under the target condition, scheduling a terminal to send an uplink signal according to a preset guard interval, wherein the terminal does not send the uplink signal in the guard interval; wherein the target condition comprises any one of: the terminal continuously sends uplink signals with different powers, and the continuously sent uplink signals are the same type of uplink signals or different types of uplink signals; the terminal continuously sends uplink signals, the continuously sent uplink signals are sent in a frequency hopping mode, and the continuously sent uplink signals are uplink signals of the same type. The embodiment of the invention can improve the receiving performance of the uplink signal.

Description

Signal transmission method, device and terminal

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a signal transmission method, a signal transmission device and a terminal.

Background

5G(5 ^th Generation, fifth Generation) mobile communication system supports mobile enhanced broadband, low-latency, highly reliable, and large-scale machine communication connection services. In order to meet the requirements of different services on performance indexes such as throughput, time delay, reliability and the like, higher requirements are put forward for the realization of a base station and User Equipment (UE).

In an NR (New Radio, new air interface) system, an uplink channel includes: a PUSCH (Physical uplink shared channel), a PUCCH (Physical uplink control channel), a PRACH (Physical random access channel); the uplink reference signal includes: DMRS (Demodulation reference signal), SRS (Sounding reference signal).

In the NR system, for a frequency band lower than 6GHz, a transition time (transition time) of the UE needs 10us; for the frequency band above 24GHz, the transition time of the UE needs 5us. The transition time of the UE is the power ramp-up or power ramp-down time, as shown in fig. 1. The SRS may be transmitted with equal power on the same antenna port for consecutive symbols. If SRS is transmitted with unequal power at the same antenna port on consecutive symbols, the transition time of UE is the same as above. For SRS antenna switching, the time for antenna switching needs 15us. Therefore, when the UE antenna is switched, a sufficient guard interval needs to be reserved, as shown in table 1.

TABLE 1

Configuration of values	Subcarrier spacing (KHz)	Symbol length (us)	Protection symbol
				0	15	71.43	1
1	30	35.71	1
				2	60	17.85	1
3	120	8.93	2

For SRS frequency hopping transmission, when the UE is scheduled in consecutive time slots without changing the center frequency, a PLL (Phase Locked Loop) does not need to be retuned, and for a frequency band lower than 6GHz (corresponding to FR 1), the transition time of the UE needs 10 to 20us; for the frequency band above 24GHz (corresponding to FR 2), the transition time of the UE needs 5 to 10us, as shown in table 2. However, when frequency hopping and center frequency needs to be changed, PLL needs to be retuned, and transition time of UE needs about 50 to 200us.

TABLE 2

In NR systems, the presence of transition times may cause inter-symbol interference or signal distortion, resulting in poor reception performance of the uplink signal.

Disclosure of Invention

Embodiments of the present invention provide a signal transmission method, a signal transmission device, and a terminal, so as to solve a problem in the prior art that uplink signal reception performance is poor due to inter-symbol interference or signal distortion caused by an influence of a transition time of the terminal.

In a first aspect, an embodiment of the present invention provides a signal transmission method, applied to a network side device, including:

under the target condition, scheduling a terminal to send an uplink signal according to a preset guard interval, wherein the terminal does not send the uplink signal in the guard interval;

wherein the target condition comprises any one of:

the terminal continuously sends uplink signals with different powers, and the continuously sent uplink signals are the same type of uplink signals or different types of uplink signals;

the terminal continuously sends uplink signals, the continuously sent uplink signals are sent in a frequency hopping mode, and the continuously sent uplink signals are uplink signals of the same type.

In a second aspect, an embodiment of the present invention further provides a signal transmission method, applied to a terminal, including:

under the target condition, sending an uplink signal according to the scheduling of the network side equipment;

when the uplink signal is sent, the uplink signal is not sent in a preset guard interval;

wherein the target condition comprises any one of the following conditions:

In a third aspect, an embodiment of the present invention further provides a signal transmission apparatus, including:

the scheduling module is used for scheduling a terminal to send an uplink signal according to a preset guard interval under the target condition, wherein the terminal does not send the uplink signal in the guard interval;

wherein the target condition comprises any one of the following conditions:

In a fourth aspect, an embodiment of the present invention further provides a terminal, including:

the sending module is used for sending the uplink signal according to the scheduling of the network side equipment under the target condition;

wherein the target condition comprises any one of:

In a fifth aspect, an embodiment of the present invention further provides a network side device, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the signal transmission method according to the first aspect.

In a sixth aspect, an embodiment of the present invention further provides a terminal, including: a memory, a processor and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the signal transmission method according to the second aspect.

In a seventh aspect, the embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when being executed by a processor, the computer program implements the steps in the signal transmission method according to the first aspect; alternatively, the computer program realizes the steps in the signal transmission method according to the second aspect when executed by a processor.

In this way, the network side device considers the guard interval when the scheduling terminal transmits the uplink signal, and then the corresponding terminal does not transmit the uplink signal in the guard interval when transmitting the uplink signal. Therefore, the scheme of the embodiment of the invention solves the problem of intersymbol interference or signal distortion caused by the transition time of the terminal, and can improve the receiving performance of the uplink signal.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic illustration of transition times in the prior art;

fig. 2 is a flowchart of a signal transmission method according to an embodiment of the present invention;

fig. 3 is a second flowchart of a signal transmission method according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of sharing transition time according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a guard interval according to an embodiment of the present invention;

FIG. 6 is a second schematic diagram of sharing transition time according to the embodiment of the present invention;

FIG. 7 is a second schematic diagram of a guard interval according to the second embodiment of the present invention;

fig. 8 is one of the structural diagrams of a signal transmission apparatus provided in the embodiment of the present invention;

fig. 9 is one of the structural diagrams of a terminal provided in the embodiment of the present invention;

fig. 10 is a second structural diagram of a terminal according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.

Referring to fig. 2, fig. 2 is a flowchart of a signal transmission method provided by an embodiment of the present invention, and is applied to a network side device. As shown in fig. 2, the method comprises the following steps:

step 201, under the target condition, a terminal is scheduled to send an uplink signal according to a preset guard interval, and the terminal does not send the uplink signal in the guard interval.

Wherein the target condition comprises any one of: the terminal continuously sends uplink signals with different powers, and the continuously sent uplink signals are the same type of uplink signals or different uplink signals; the terminal continuously sends uplink signals, the continuously sent uplink signals are sent in a frequency hopping mode, and the continuously sent uplink signals are uplink signals of the same type.

The uplink signals include, but are not limited to: PUSCH (including DMRS), PUCCH (including DMRS), PRACH, SRS.

In the embodiment of the present invention, the network side device considers the guard interval when the scheduling terminal transmits the uplink signal, and then the corresponding terminal does not transmit the uplink signal in the guard interval when transmitting the uplink signal. Therefore, the scheme of the embodiment of the invention solves the problem of intersymbol interference or signal distortion caused by the transition time of the terminal, and can improve the receiving performance of the uplink signal and the transmission speed of the uplink or downlink signal.

On the basis of the embodiment shown in fig. 2, before step 201, in order to further ensure the data transmission performance and improve the data transmission speed, the method may further include: the network side equipment pre-configures the guard interval; or the network side equipment and the terminal appoint the protection interval.

The guard interval is related to the subcarrier spacing in case the network side device pre-configures the guard interval. Specifically, in the case that the subcarrier spacing is greater than 15KHz, the guard interval between two adjacent uplink signals is configured as 1 guard symbol. It should be noted that, in the embodiment of the present invention, the "two adjacent uplink signals" may refer to any two adjacent signals, or two adjacent signals specified according to the needs of an application scenario, which is not limited in the embodiment of the present invention.

That is, in this case, when the terminal continuously transmits the uplink channel or the uplink reference signal and the power of the uplink channel or the uplink reference signal changes or performs frequency hopping transmission, if the subcarrier spacing is greater than 15KHz, the guard interval between two adjacent uplink channels or uplink reference signals is 1 guard symbol. The length of the guard symbols is related to the subcarrier spacing. During the guard interval, the terminal will not send any uplink channel or uplink reference signal. Wherein, the relationship between the guard interval and the subcarrier interval can be as shown in table 3. As can be seen from Table 3, when the subcarrier spacing is 30KHz,60KHz,120KHz, the number of guard symbols is 1.

TABLE 3

Under the condition that the network side equipment and the terminal agree on the guard interval, the guard interval is related to the frequency band where the subcarrier interval and the center frequency are located, or the guard interval is related to the subcarrier interval. Specifically, the guard interval between two adjacent uplink signals is agreed to be less than or equal to 1 guard symbol.

Under the condition that two adjacent uplink signals are the same type of uplink signal, that is, when one terminal continuously transmits the same type of uplink channel or uplink reference signal and the power of the uplink channel or uplink reference signal changes or frequency hopping is transmitted:

(1) If the guard interval is related to the subcarrier interval, the guard interval may be agreed as follows:

under the condition that the subcarrier interval is 15KHz, the guard interval between two adjacent uplink signals is approximately set to be 0 guard symbol or 1 guard symbol;

under the condition that the subcarrier interval is 30KHz, the guard interval between two adjacent uplink signals is approximately set to be 0 guard symbol or 1 guard symbol;

under the condition that the subcarrier interval is 60KHz, the guard interval between two adjacent uplink signals is about to be 1 guard symbol;

in the case that the subcarrier spacing is 120KHz, the guard interval between two adjacent uplink signals is set to about 1 guard symbol.

The relationship between the guard interval and the subcarrier interval may be as shown in table 4.

TABLE 4

(2) If the guard interval is related to the subcarrier interval and the frequency band of the center frequency, the guard interval can be appointed as follows:

under the condition that the subcarrier interval is 15KHz and the frequency band of the central frequency is a first frequency band, the guard interval between two adjacent uplink signals is about to be 0 guard symbol or 1 guard symbol;

under the condition that the subcarrier interval is 30KHz and the frequency band of the central frequency is a first frequency band, the guard interval between two adjacent uplink signals is set to be 0 guard symbol or 1 guard symbol;

under the condition that the subcarrier interval is 60KHz and the frequency band of the central frequency is a first frequency band, the guard interval between two adjacent uplink signals is about to be 1 guard symbol;

under the condition that the subcarrier interval is 60KHz and the frequency band of the central frequency is a second frequency band, the guard interval between two adjacent uplink signals is about to be 0 guard symbol or 1 guard symbol;

and under the condition that the subcarrier interval is 120KHz and the frequency band of the central frequency is a second frequency band, the guard interval between two adjacent uplink signals is about to be 1 guard symbol.

The relationship between the guard interval and the frequency bands of the subcarrier interval and the center frequency can be shown in table 5.

TABLE 5

Meanwhile, in the embodiment of the present invention, in order to further increase the data transmission rate, a shared transition time may be preconfigured for two uplink signals of the same type under the condition that the two adjacent uplink signals are uplink signals of the same type. Wherein, the transition time refers to the power climbing or power falling time. The shared transition time refers to the transmission time of two uplink channels occupied by the power climbing time of one uplink channel and the power descending time of the other uplink channel in two adjacent same uplink channels.

For the above case (1), the setting of the shared transition time may refer to table 4, and for the above case (2), the setting of the shared transition time may refer to table 5.

Within the guard symbols, the terminal will not send any uplink channel or uplink reference signal. Wherein the uplink signals of the same type include at least one of the following combinations:

PUSCH and PUSCH; PUCCH and PUCCH; PRACH and PRACH; SRS + SRS; PUSCH and PUCCH; PUCCH and PUSCH; and the PUCCH and the PUSCH contain DMRS.

When two adjacent uplink signals are uplink signals of different types, that is, when one terminal continuously transmits uplink channels or uplink reference signals of different types and the power of the uplink channels or the uplink reference signals changes:

(3) If the guard interval is related to the subcarrier interval, the guard interval may be agreed as follows:

under the condition that the subcarrier interval is 30KHz, the guard interval between two adjacent uplink signals is about to be 1 guard symbol;

The relationship between the guard interval and the subcarrier interval may be as shown in table 6.

TABLE 6

(4) If the guard interval is related to the subcarrier interval and the frequency band of the center frequency, the guard interval can be appointed as follows:

under the condition that the subcarrier interval is 30KHz and the frequency band of the central frequency is a first frequency band, the guard interval between two adjacent uplink signals is about to be 1 guard symbol;

The relationship between the guard interval and the frequency band of the subcarrier interval and the center frequency therebetween may be shown in table 7.

TABLE 7

Meanwhile, in the embodiment of the present invention, in order to further increase the data transmission rate, when two adjacent uplink signals are uplink signals of different types, transition time may be reserved in an uplink signal with a low priority according to a preset priority for the two adjacent uplink signals. Wherein, the priority is, from high to low: PRACH, SRS, PUSCH, or PUCCH; the priority of the PUSCH and PUCCH is the same.

For example, if two adjacent uplink signals are PUSCH and SRS, respectively, transition time is reserved in the PUSCH according to the priority order.

For the above case (3), the setting of the transition time may refer to table 6, and for the above case (4), the setting of the transition time may refer to table 7.

Within the guard symbols, the terminal will not send any uplink channel or uplink reference signal. Wherein the different types of uplink signals comprise at least one combination of:

PRACH and PUSCH; SRS and PUSCH; PRACH and PUCCH; SRS and PUCCH; PUSCH and PRACH; PUCCH and PRACH; SRS and PRACH; PUSCH and SRS; PUCCH and SRS; PRACH and SRS; and the PUCCH and the PUSCH contain DMRS.

In the above description, the first frequency band FR1 refers to a frequency band having a center frequency lower than 6GHz, and the second frequency band FR2 refers to a frequency band having a center frequency higher than 24 GHz.

In the embodiment of the present invention, there is also a case where, when the subcarrier interval is greater than 15KHz, the terminal does not expect the network side device to schedule that the terminal continuously transmits an uplink signal and the power of the continuously transmitted uplink signal changes or the continuously transmitted uplink signal is frequency hopping transmission, and then at this time, the guard interval between two adjacent uplink signals is greater than or equal to 1 guard symbol. Accordingly, the network side device can be scheduled arbitrarily.

Referring to fig. 3, fig. 3 is a flowchart of a signal transmission method provided by an embodiment of the present invention, and is applied to a terminal. As shown in fig. 3, the method comprises the following steps:

and 301, in the target condition, sending an uplink signal according to the scheduling of the network side equipment.

When the uplink signal is transmitted, the uplink signal is not transmitted within a preset guard interval. Wherein the target condition comprises any one of:

In the embodiment of the present invention, the network side device considers the guard interval when the scheduling terminal transmits the uplink signal, and then the corresponding terminal does not transmit the uplink signal in the guard interval when transmitting the uplink signal. Therefore, the scheme of the embodiment of the invention solves the problem of intersymbol interference or signal distortion caused by the transition time of the terminal.

In the embodiment of the present invention, the method may be applied to a terminal, for example: a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a PDA (Personal digital assistant), an MID (Mobile Internet Device), a Wearable Device (Wearable Device), or the like.

On the basis of the above embodiment, in order to further ensure the data transmission performance and improve the data transmission speed, the method may further include: and the terminal and the network side equipment appoint the protection interval. The guard interval is related to a frequency band where a subcarrier interval and a center frequency are located, or the guard interval is related to the subcarrier interval. Specifically, the guard interval between two adjacent uplink signals may be defined to be less than or equal to 1 guard symbol.

In practical applications, the process of the terminal and the network side device agreeing on the guard interval may refer to the description of the foregoing embodiment, and is not described herein again.

Meanwhile, in the embodiment of the present invention, in order to further increase the data transmission rate, a shared transition time may be preconfigured for two uplink signals of the same type under the condition that the two adjacent uplink signals are uplink signals of the same type; when two adjacent uplink signals are different types of uplink signals, reserving transition time in the uplink signal with low priority according to a preset priority for the two adjacent uplink signals; wherein, the priority is, from high to low: PRACH, SRS, PUSCH, or PUCCH; the priority of the PUSCH and PUCCH is the same.

In particular, to guarantee reliability of data transmission, for SRS frequency hopping transmission in one slot, the SRS counter needs to be redefined due to insertion of a guard symbol. Therefore, the embodiment of the invention can also comprise:

and the terminal determines the value of the SRS counter according to the guard interval. The specific process is as follows:

in the case of aperiodic SRS transmission, the value of the SRS counter is calculated using equation (1):

in case of periodic or semi-continuous transmission of SRS, the value of the SRS counter is calculated using equation (2):

wherein n is _SRS A value representing an SRS counter;

indicates the number of time slots in one radio; n is a radical of an alkyl radical _f Indicating a radio frame number;

represents a slot number; t is _offset Represents a slot offset; t is _SRS Indicates the SRS period;

represents the total number of SRS symbols in one slot; l' represents an SRS symbol number; r represents SRS heavyThe number of complex transmissions;

the value of Q is related to the number of the protection symbols; q =0 when the number of guard symbols is 0; when the number of guard symbols is 1, Q =2.

Wherein, the period and the slot offset of the SRS counter satisfy the following relationship:

for the case described in the background art, the transition time of the UE needs to be considered when the SRS symbol transmission power continuously transmitted by the UE changes, the port changes, or the frequency hopping changes. Similarly, when the power of other uplink channels or reference signals changes or hops, the transition time of the UE also needs to be considered. In practical applications, the cases to be considered include at least the combinations of uplink channels or uplink reference signals shown in table 8.

TABLE 8

For example, assuming that the network side configures the UE to transmit two consecutive PUSCHs in one slot on a carrier with 120KHz subcarrier spacing, and the second PUSCH has different power relative to the first PUSCH, the two PUSCHs may share the transition time, as shown in fig. 4. In fig. 4, the power down time of the first PUSCH and the power up time of the second PUSCH occupy the transmission time of two PSUCHs at the same time, which is the shared transition time. In this case, as can be seen from the lookup table 3, the length of 1 symbol is 8.93us, and the shared transition time is about 2.5us. In order to avoid interference and signal distortion between two adjacent PUSCH symbols, 1 symbol is reserved as a guard interval, as shown in fig. 5.

For example, assuming that the network side configures the UE to continuously transmit PUSCH and SRS in one slot on a carrier with a subcarrier spacing of 120KHz, and the SRS has different relative to the PUSCH power, the transition time of the UE is located in the PUSCH, as shown in fig. 6. In this case, the length of 1 symbol is 8.93us, and the transition time is about 5us, as can be seen from the look-up table 6. In order to avoid the interference of the SRS power on time to the last symbol of the PUSCH/DMRS, 1 symbol is reserved as a guard interval, as shown in fig. 7.

The scheme of the embodiment of the invention is suitable for an NR mobile communication system, and when the same or different uplink channels or uplink reference signals are continuously transmitted and the power of the uplink channels or the uplink reference signals is changed or frequency hopping is transmitted, the protection symbols can be reserved according to the subcarrier intervals and/or the frequency band where the central frequency is located, so that the inter-symbol interference or signal distortion is avoided.

Referring to fig. 8, fig. 8 is a structural diagram of a signal transmission device according to an embodiment of the present invention. As shown in fig. 8, the signal transmission apparatus 800 includes: a scheduling module 801, configured to schedule a terminal to send an uplink signal according to a preset guard interval under a target condition, where the terminal does not send the uplink signal in the guard interval.

Wherein the target condition comprises any one of: the terminal continuously sends uplink signals with different powers, and the continuously sent uplink signals are the same type of uplink signals or different types of uplink signals; the terminal continuously sends uplink signals, the continuously sent uplink signals are sent in a frequency hopping mode, and the continuously sent uplink signals are uplink signals of the same type.

Optionally, in order to further ensure data transmission performance and improve data transmission speed, the apparatus may further include:

a first setting module 802 for pre-configuring the guard interval; or appointing the protection interval with the terminal.

In practical applications, the guard interval is related to the subcarrier spacing. The first setting module 802, when pre-configuring the guard interval, may specifically be configured to: and in the case that the subcarrier spacing is greater than 15KHz, configuring a guard interval between two adjacent uplink signals as 1 guard symbol.

In practical applications, the guard interval is related to a frequency band in which a subcarrier interval and a center frequency are located, or the guard interval is related to the subcarrier interval. The first setting module 802, when agreeing the guard interval with the terminal, may specifically be configured to: and the protection interval between two adjacent uplink signals is appointed to be less than or equal to 1 protection symbol.

Specifically, the guard interval is related to the subcarrier interval; in a case that two adjacent uplink signals are uplink signals of the same type, the first setting module 802 is specifically configured to:

Specifically, the guard interval is related to the subcarrier interval and the frequency band of the center frequency; in a case that two adjacent uplink signals are uplink signals of the same type, the first setting module 802 is specifically configured to:

under the condition that the subcarrier interval is 30KHz and the frequency band of the central frequency is a first frequency band, the guard interval between two adjacent uplink signals is about to be 0 guard symbol or 1 guard symbol;

Specifically, the guard interval is related to the subcarrier interval; in a case that two adjacent uplink signals are uplink signals of different types, the first setting module 802 is specifically configured to:

Specifically, the guard interval is related to the subcarrier interval and the frequency band of the center frequency; in a case that two adjacent uplink signals are uplink signals of different types, the first setting module 802 is specifically configured to:

under the condition that the subcarrier interval is 60KHz and the frequency band of the central frequency is a second frequency band, the guard interval between two adjacent uplink signals is set to be 0 guard symbol or 1 guard symbol;

On the basis of the above embodiment, in the case that the subcarrier interval is greater than 15KHz, the terminal does not expect that the network side device schedules the terminal to continuously transmit the uplink signal and the power of the continuously transmitted uplink signal changes or the continuously transmitted uplink signal is frequency hopping transmission; at this time, the guard interval between two adjacent uplink signals is greater than or equal to 1 guard symbol.

In the embodiment of the present invention, the apparatus according to the embodiment of the present invention considers a guard interval when a terminal is scheduled to transmit an uplink signal, and then a corresponding terminal does not transmit the uplink signal in the guard interval when transmitting the uplink signal. Therefore, the scheme of the embodiment of the invention solves the problem of intersymbol interference or signal distortion caused by the transition time of the terminal, and can improve the receiving performance of the uplink signal and the transmission speed of the uplink or downlink signal.

Referring to fig. 9, fig. 9 is a structural diagram of a terminal according to an embodiment of the present invention, and as shown in fig. 9, a terminal 900 includes: a sending module 901, configured to send an uplink signal according to scheduling of a network side device in a target situation; when the uplink signal is sent, the uplink signal is not sent in a preset guard interval; wherein the target condition comprises any one of: the terminal continuously sends uplink signals with different powers, and the continuously sent uplink signals are the same type of uplink signals or different types of uplink signals; the terminal continuously sends uplink signals, the continuously sent uplink signals are sent in a frequency hopping mode, and the continuously sent uplink signals are uplink signals of the same type.

Optionally, in order to further increase the data transmission rate, the terminal may further include: a setting module 902, configured to agree with the network side device for the guard interval. The guard interval is related to a frequency band where a subcarrier interval and a center frequency are located, or the guard interval is related to the subcarrier interval. Specifically, the setting module 902 is specifically configured to stipulate a guard interval between two adjacent uplink signals to be less than or equal to 1 guard symbol.

Specifically, the guard interval is related to the subcarrier interval; in a case that two adjacent uplink signals are uplink signals of the same type, the setting module 902 is specifically configured to:

Specifically, the guard interval is related to the subcarrier interval and the frequency band of the center frequency; in a case that two adjacent uplink signals are uplink signals of the same type, the setting module 902 is specifically configured to:

Specifically, the guard interval is related to the subcarrier interval; in a case that two adjacent uplink signals are uplink signals of different types, the setting module 902 is specifically configured to:

Specifically, the guard interval is related to the subcarrier interval and the frequency band of the center frequency; in a case that two adjacent uplink signals are uplink signals of different types, the setting module 902 is specifically configured to:

In addition, in the embodiment of the present invention, when the subcarrier interval is greater than 15KHz, the terminal does not expect that the network side device schedules the terminal to continuously transmit the uplink signal and the power of the continuously transmitted uplink signal changes or the continuously transmitted uplink signal is frequency hopping transmission. At this time, the guard interval between two adjacent uplink signals is greater than 1 or equal to one guard symbol.

Optionally, to ensure reliability of data transmission, the terminal may further include: a determining module 903, configured to determine a value of the SRS counter according to the guard interval.

Specifically, in the case of aperiodic SRS transmission, the value of the SRS counter is calculated using equation (3):

in case of periodic or semi-continuous transmission of SRS, the value of the SRS counter is calculated using equation (4):

wherein n is _SRS A value representing an SRS counter;

indicating the number of time slots in one radio; n is _f To representA radio frame number;

represents the total number of SRS symbols in one slot; l' represents an SRS symbol number; r represents the number of SRS repeated transmissions;

The terminal 900 can implement each process implemented by the terminal in the method embodiments of fig. 1 to fig. 2, and is not described herein again to avoid repetition.

In the embodiment of the present invention, the network side device considers the guard interval when the scheduling terminal transmits the uplink signal, and then the corresponding terminal does not transmit the uplink signal in the guard interval when transmitting the uplink signal. Therefore, by using the scheme of the embodiment of the invention, the problem of intersymbol interference or signal distortion caused by the transition time of the terminal is solved, and the receiving performance of the uplink signal and the transmission speed of the uplink or downlink signal can be improved.

Fig. 10 is a schematic diagram of a hardware structure of a terminal implementing various embodiments of the present invention. The terminal 1000 includes, but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, a processor 1010, and a power supply 1011. Those skilled in the art will appreciate that the terminal configuration shown in fig. 10 is not intended to be limiting, and that the terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The radio frequency unit 1001 is configured to send an uplink signal according to scheduling of a network side device in a target situation; when the uplink signal is sent, the uplink signal is not sent in a preset guard interval; wherein the target condition comprises any one of: the terminal continuously sends uplink signals with different powers, and the continuously sent uplink signals are the same type of uplink signals or different types of uplink signals; the terminal continuously sends uplink signals, the continuously sent uplink signals are sent in a frequency hopping mode, and the continuously sent uplink signals are uplink signals of the same type.

Optionally, the processor 1010 is configured to agree with the network side device for the guard interval.

The guard interval is related to a frequency band where a subcarrier interval and a center frequency are located, or the guard interval is related to the subcarrier interval; a processor 1010, configured to stipulate a guard interval between two adjacent uplink signals to be less than or equal to 1 guard symbol.

Optionally, the processor 1010 is configured to, in a case that two adjacent uplink signals are uplink signals of the same type, pre-configure shared transition time for the two uplink signals of the same type; when two adjacent uplink signals are different types of uplink signals, reserving transition time in the uplink signal with low priority according to a preset priority for the two adjacent uplink signals; wherein, the priority is, from high to low: PRACH, SRS, PUSCH, or PUCCH; the priority of the PUSCH and PUCCH is the same.

The guard interval is related to the subcarrier spacing; optionally, the processor 1010 is configured to, in a case that two adjacent uplink signals are uplink signals of the same type:

The guard interval is related to the subcarrier interval and the frequency band of the center frequency; optionally, the processor 1010 is configured to, in a case that two adjacent uplink signals are uplink signals of the same type:

in the case where two adjacent upstream signals are the same type of upstream signal:

The guard interval is related to the subcarrier spacing; optionally, the processor 1010 is configured to, in a case that two adjacent uplink signals are different types of uplink signals:

in the case where two adjacent upstream signals are different types of upstream signals:

The target case further comprises:

under the condition that the subcarrier interval is larger than 15KHz, the terminal does not expect that the network side equipment schedules the terminal to continuously send the uplink signals, the power of the continuously sent uplink signals is changed or the continuously sent uplink signals are sent in a frequency hopping mode;

the guard interval between two adjacent uplink signals is greater than 1 or equal to one guard symbol.

Optionally, the processor 1010 is configured to determine a value of the SRS counter according to the guard interval.

Optionally, the processor 1010 is configured to calculate a value of the SRS counter by using formula (5) in the case that the SRS is transmitted aperiodically:

in case of periodic or semi-continuous transmission of SRS, the value of the SRS counter is calculated using equation (6):

wherein n is _SRS A value representing an SRS counter;

indicates the number of time slots in one radio; n is _f Indicating a radio frame number;

represents a slot number; t is a unit of _offset Represents a slot offset; t is _SRS Indicates the SRS period;

represents the total number of SRS symbols in one slot;l' represents an SRS symbol number; r represents the number of SRS repeated transmissions;

It should be understood that, in the embodiment of the present invention, the radio frequency unit 1001 may be used for receiving and sending signals during a message transmission or a call, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 1010; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. Further, the radio frequency unit 1001 may also communicate with a network and other devices through a wireless communication system.

The terminal provides the user with wireless broadband internet access through the network module 1002, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 1003 may convert audio data received by the radio frequency unit 1001 or the network module 1002 or stored in the memory 1009 into an audio signal and output as sound. Also, the audio output unit 1003 can provide audio output (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the terminal 1000. The audio output unit 1003 includes a speaker, a buzzer, a receiver, and the like.

The input unit 1004 is used to receive an audio or video signal. The input Unit 1004 may include a GPU (Graphics Processing Unit) 10041 and a microphone 10042, and the Graphics processor 10041 processes image data of still pictures or video obtained by an image capturing device (such as a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 1006. The image frames processed by the graphic processor 10041 may be stored in the memory 1009 (or other storage medium) or transmitted via the radio frequency unit 1001 or the network module 1002. The microphone 10042 can receive sound and can process such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 1001 in case of a phone call mode.

Terminal 1000 can also include at least one sensor 1005 such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 10061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 10061 and/or backlight when the terminal 1000 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensor 1005 may further include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which will not be described herein.

The display unit 1006 is used to display information input by the user or information provided to the user. The Display unit 1006 may include a Display panel 10061, and the Display panel 10061 may be configured in the form of an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), or the like.

The user input unit 1007 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 1007 includes a touch panel 10071 and other input devices 10072. The touch panel 10071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 10071 (e.g., operations by a user on or near the touch panel 10071 using a finger, a stylus, or any other suitable object or attachment). The touch panel 10071 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 1010, and receives and executes commands sent by the processor 1010. In addition, the touch panel 10071 may be implemented by various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The user input unit 1007 may include other input devices 10072 in addition to the touch panel 10071. Specifically, the other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein again.

Further, the touch panel 10071 can be overlaid on the display panel 10061, and when the touch panel 10071 detects a touch operation thereon or nearby, the touch operation is transmitted to the processor 1010 to determine the type of the touch event, and then the processor 1010 provides a corresponding visual output on the display panel 10061 according to the type of the touch event. Although in fig. 10, the touch panel 10071 and the display panel 10061 are two independent components for implementing the input and output functions of the terminal, in some embodiments, the touch panel 10071 and the display panel 10061 may be integrated for implementing the input and output functions of the terminal, which is not limited herein.

Interface unit 1008 is an interface for connecting an external device to terminal 1000. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. Interface unit 1008 can be used to receive input from external devices (e.g., data information, power, etc.) and transmit the received input to one or more elements within terminal 1000 or can be used to transmit data between terminal 1000 and external devices.

The memory 1009 may be used to store software programs as well as various data. The memory 1009 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required by at least one function, and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 1009 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 1010 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 1009 and calling data stored in the memory 1009, thereby integrally monitoring the terminal. Processor 1010 may include one or more processing units; preferably, the processor 1010 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 1010.

Terminal 1000 can also include a power supply 1011 (e.g., a battery) for powering the various components, and preferably, power supply 1011 can be logically coupled to processor 1010 through a power management system that provides management of charging, discharging, and power consumption.

In addition, terminal 1000 can include some functional blocks not shown, which are not described herein.

Preferably, an embodiment of the present invention further provides a terminal, including a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program, when executed by the processor, implements each process of the embodiment of the signal transmission method, and can achieve the same technical effect, and details are not repeated here to avoid repetition.

Preferably, an embodiment of the present invention further provides a network-side device, which includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program, when executed by the processor, implements each process of the embodiment of the signal transmission method, and can achieve the same technical effect, and details are not repeated here to avoid repetition.

The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the signal transmission method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

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 phrase "comprising a … …" does not exclude the presence of another identical 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. Based on such understanding, the technical solutions of the present invention 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 instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A signal transmission method is applied to network side equipment, and is characterized by comprising the following steps:

wherein the target condition comprises any one of the following conditions:

the terminal continuously sends uplink signals, the continuously sent uplink signals are sent in a frequency hopping mode, and the continuously sent uplink signals are uplink signals of the same type;

before the scheduling terminal sends the uplink signal according to the preset guard interval, the method further includes:

pre-configuring the guard interval; or appointing the protection interval with the terminal;

wherein the guard interval is related to a subcarrier spacing; the pre-configuring the guard interval comprises:

and in the case that the subcarrier spacing is greater than 15KHz, configuring a guard interval between two adjacent uplink signals as 1 guard symbol.

2. The method of claim 1, wherein the guard interval relates to a frequency band in which a subcarrier spacing and a center frequency are located, or wherein the guard interval relates to the subcarrier spacing;

the appointing the guard interval with the terminal comprises:

and appointing a guard interval between two adjacent uplink signals to be less than or equal to 1 guard symbol.

3. The method of claim 2, further comprising:

under the condition that two adjacent uplink signals are the same type of uplink signals, pre-configuring shared transition time for the two same type of uplink signals;

when two adjacent uplink signals are different types of uplink signals, reserving transition time in the uplink signal with low priority according to a preset priority for the two adjacent uplink signals;

wherein, the priority is, from high to low: PRACH, SRS, PUSCH, or PUCCH; the priority of the PUSCH and PUCCH is the same.

4. The method of claim 2, wherein the guard interval relates to the subcarrier spacing; the appointing a guard interval between two adjacent uplink signals to be less than or equal to 1 guard symbol includes:

5. The method of claim 2, wherein the guard interval relates to a subcarrier spacing and a frequency band of a center frequency; the appointing a guard interval between two adjacent uplink signals to be less than or equal to 1 guard symbol includes:

6. The method of claim 2, wherein the guard interval relates to the subcarrier spacing; the appointing a guard interval between two adjacent uplink signals to be less than or equal to 1 guard symbol includes:

7. The method of claim 2, wherein the guard interval relates to a subcarrier spacing and a frequency band of a center frequency; the appointing a guard interval between two adjacent uplink signals to be less than or equal to 1 guard symbol includes:

8. The method of claim 1, wherein the target condition further comprises:

the guard interval between two adjacent uplink signals is greater than or equal to 1 guard symbol.

9. A signal transmission method is applied to a terminal, and is characterized by comprising the following steps:

wherein the target condition comprises any one of the following conditions:

before the sending of the uplink signal according to the scheduling of the network side device, the method further includes:

appointing the protection interval with the network side equipment;

or, the guard interval is preconfigured by the network side device, and the guard interval is related to a subcarrier interval; in the case that the subcarrier spacing is greater than 15KHz, a guard interval between two adjacent uplink signals is configured as 1 guard symbol.

10. The method of claim 9, wherein the guard interval relates to a subcarrier spacing and a frequency band of a center frequency, or wherein the guard interval relates to the subcarrier spacing;

the appointing the guard interval with the network side device includes:

and the protection interval between two adjacent uplink signals is appointed to be less than or equal to 1 protection symbol.

11. The method of claim 10, further comprising:

wherein, the priority is from high to low: PRACH, SRS, PUSCH, or PUCCH; the priority of PUSCH and PUCCH is the same.

12. The method of claim 10, wherein the guard interval relates to the subcarrier spacing; the appointing a guard interval between two adjacent uplink signals to be less than or equal to 1 guard symbol includes:

13. The method of claim 10, wherein the guard interval relates to a subcarrier spacing and a frequency band of a center frequency; the agreeing of the guard interval between two adjacent uplink signals to be less than or equal to 1 guard symbol includes:

14. The method of claim 10, wherein the guard interval relates to the subcarrier spacing; the appointing a guard interval between two adjacent uplink signals to be less than or equal to 1 guard symbol includes:

15. The method of claim 10, wherein the guard interval is related to the subcarrier spacing; the appointing a guard interval between two adjacent uplink signals to be less than or equal to 1 guard symbol includes:

under the condition that the subcarrier interval is 15KHz and the frequency band of the central frequency is a first frequency band, the guard interval between two adjacent uplink signals is set to be 0 guard symbol or 1 guard symbol;

16. The method of claim 9, wherein the target condition further comprises:

17. The method of claim 9, further comprising:

and determining the value of an SRS counter according to the guard interval.

18. The method of claim 17, wherein the determining the value of the SRS counter according to the guard interval comprises:

in the case of aperiodic SRS transmission, the value of the SRS counter is calculated using equation (3):

in case of periodically or semi-continuously transmitting the SRS, the value of the SRS counter is calculated using equation (4):

wherein n is _SRS A value representing an SRS counter;

indicating the number of time slots in one radio; n is _f Indicating a radio frame number;

19. A signal transmission apparatus, comprising:

wherein the target condition comprises any one of:

wherein the first setting module is configured to pre-configure the guard interval; or appointing the protection interval with the terminal;

the guard interval is related to a subcarrier spacing; the first setting module, when pre-configuring the guard interval, is to: and in the case that the subcarrier spacing is greater than 15KHz, configuring a guard interval between two adjacent uplink signals as 1 guard symbol.

20. A terminal, comprising:

wherein the target condition comprises any one of:

the terminal further comprises:

a setting module, configured to agree with the network side device for the guard interval; alternatively, the first and second electrodes may be,

the guard interval is preconfigured by the network side equipment, and is related to subcarrier spacing; in the case that the subcarrier spacing is greater than 15KHz, a guard interval between two adjacent uplink signals is configured as 1 guard symbol.

21. A network-side device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when being executed by the processor, carries out the steps of the signal transmission method according to one of claims 1 to 8.

22. A terminal, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when being executed by the processor, carries out the steps of the signal transmission method according to one of claims 9 to 18.

23. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps in the signal transmission method according to any one of claims 1 to 8; alternatively, the computer program realizes the steps in the signal transmission method according to any one of claims 9 to 18 when executed by a processor.