CN115174030A

CN115174030A - Low-delay data transmission method and device

Info

Publication number: CN115174030A
Application number: CN202211029233.5A
Authority: CN
Inventors: 倪浩; 孙涛; 毛敏; 聂聪
Original assignee: Beijing Neuron Network Technology Co ltd
Current assignee: Beijing Neuron Network Technology Co ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2022-10-11
Anticipated expiration: 2042-08-26
Also published as: CN115174030B

Abstract

The embodiment of the application relates to the technical field of communication, and relates to a data transmission method and device. The specific scheme is as follows: detecting the reporting information of the burst data transmission requirement from the user terminal; under the condition that the reporting information of the burst data transmission requirement is detected, adding a downlink transmission block end indication at the end of a code block of downlink transmission; the downlink transmission block end indication is used for indicating that the downlink resource is converted into the uplink resource for burst data transmission; inserting uplink scheduling information after the downlink transmission block end indication; the uplink scheduling information is used to indicate to the user terminal the time-frequency resources occupied by the uplink transmission of the burst data after the conversion. According to the embodiment of the application, the downlink transmission block end indication is utilized to convert the downlink resources into the uplink resources for sending the burst service data, the uplink scheduling information is utilized to schedule the transmission of the burst service data, the resources can be allocated to the service in a targeted manner according to the requirement, the influence of the burst data on a system is reduced, the transmission delay is reduced, and the transmission efficiency is improved.

Description

Low-delay data transmission method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a data transmission method and apparatus.

Background

The main duplex system in the wireless communication system mainly includes: time division duplex systems, frequency division duplex systems, etc. The wireless time division duplex system is characterized in that uplink transmission and downlink transmission respectively occupy time slices which are not overlapped with each other, thereby avoiding the mutual interference of the uplink transmission and the downlink transmission. When the user terminal has data to transmit to the base station, scheduling Request (SR) information may be sent in an Uplink Control Channel (PUCCH), and the SR triggers an Uplink transmission process to request the base station to perform Uplink transmission scheduling. The process that the user terminal applies for the PUSCH resource through the SR brings the interactive process of the uplink and downlink signaling, resulting in larger transmission delay. The base station side can reduce the transmission delay caused by the signaling process by configuring the predefined semi-continuous time frequency resource for the user terminal. However, the way of configuring time-frequency resources for the ue generally results in a decrease in the utilization rate of system resources and a low communication efficiency for the ue with data having a burst characteristic or data having a non-uniform time domain distribution.

Disclosure of Invention

In view of the above problems in the prior art, embodiments of the present application provide a low latency data transmission method and apparatus. In the embodiment of the application, under the condition that the information reporting requirement of burst data transmission is detected, a part of downlink resources are converted into uplink resources by using the downlink transmission block end indication for sending burst service data, and the transmission of the burst service data is dynamically scheduled by using the uplink scheduling information, so that the resources can be pertinently allocated to the service according to the requirement, the influence of the burst data on other users and services in the system is reduced or avoided, the transmission delay of the communication system is reduced, and the data transmission efficiency is improved.

In order to achieve the above object, a first aspect of the present application provides a low latency data transmission method, including:

detecting the reporting information of the burst data transmission requirement from a user terminal;

under the condition that the report information of the burst data transmission requirement is detected, adding a downlink transmission block end indication at the end of a code block of downlink transmission; the downlink transmission block end indication is used for indicating that downlink resources are converted into uplink resources for burst data transmission;

inserting uplink scheduling information after the downlink transmission block end indication; the uplink scheduling information is used for indicating the time-frequency resources occupied by the uplink transmission of the burst data after the conversion to the user terminal.

As a possible implementation manner of the first aspect, the method further includes:

configuring resources for sending the burst data transmission requirement reporting information aiming at a specific user terminal; the specific user terminal is a user terminal having a service with a specific delay and a specific data traffic requirement, or the specific user terminal includes at least one of the following:

a user terminal having a logical channel with a specific identification number;

a user terminal having a logical channel group with a specific identification number;

wherein the logical channels and logical channel groups indicated by the specific identification number correspond to services with specific time delay and specific data traffic requirements.

As a possible implementation manner of the first aspect, the specific delay includes that the data delay is lower than a first set threshold; the specific data traffic requirement comprises that the maximum data burst amount is lower than a second set threshold.

As a possible implementation manner of the first aspect, the configuring, for a specific ue, a resource for sending the reporting information of the burst data transmission requirement includes:

in the downlink guard band, dividing resources with specific frequency domain positions and widths; or, outside the downlink frequency band, dividing the resources of specific frequency domain position and width;

and configuring the resources with the specific frequency domain position and width to the specific user terminal through semi-static signaling.

As a possible implementation manner of the first aspect, the detecting reporting information of the burst data transmission requirement from the user terminal includes:

receiving data on resources used for sending the burst data transmission demand report information in each OFDM symbol time in a downlink time slice;

reporting an information sequence of the burst data transmission requirement of the cell corresponding to the user terminal, and performing correlation operation on the information sequence and the received data;

and determining the received data as the transmission requirement report information of the burst data sent by the user terminal under the condition that the result of the correlation operation is greater than or equal to a preset threshold value.

As a possible implementation manner of the first aspect, before adding a downlink transmission block end indication at the end of a code block of a downlink transmission, the method further includes:

determining a transport block size of the user terminal;

calculating the size of each code block according to the number of resource elements in the unit time slice after conversion and the downlink transmission target code rate;

code block division is performed on the transport block again according to the size of the code block, so that all code blocks in the transport block are aligned with the unit time slice after the conversion.

and when the dynamic downlink control information is used for downlink transmission scheduling, indicating the number of resource elements in the unit time slice after the conversion and the size of the code block in the signaling of the downlink control information.

As a possible implementation manner of the first aspect, the appending of the downlink transmission block end indication at the end of the code block of the downlink transmission includes:

on a code block of a unit time slice of current downlink transmission, a puncturing or rate matching mode is utilized, so that time-frequency resources of a part of specific quantity and/or specific positions on the unit time slice are not occupied by downlink data;

and sending the downlink transmission block end indication on the time frequency resource which is not occupied by the downlink data.

A second aspect of the present application provides a low latency data transmission method, including:

sending the information of the transmission requirement reporting of the burst data to a base station;

detecting whether a downlink transmission block end indication exists in a downlink transmission time slice;

under the condition that the downlink transmission block end indication exists in the downlink transmission time slice, analyzing the uplink scheduling information in the time slice;

and performing the uplink transmission of the burst data on the time-frequency resource indicated by the uplink scheduling information.

As a possible implementation manner of the second aspect, the sending the report information of the burst data transmission requirement to the base station includes:

acquiring configuration information from semi-static signaling from a base station, wherein the configuration information is a resource of a specific frequency domain position and width divided by the base station in a downlink guard band or outside the downlink frequency band;

and sending the resources of the information reported by the burst data transmission requirement by using the divided resources with the specific frequency domain positions and widths.

A third aspect of the present application provides a low latency data transmission apparatus, including:

the first detection unit is used for detecting the reporting information of the burst data transmission requirement from the user terminal;

a first indication unit, configured to add a downlink transmission block end indication to an end of a code block for downlink transmission when the report information of the burst data transmission requirement is detected; the downlink transmission block end indication is used for indicating that downlink resources are converted into uplink resources for burst data transmission;

a second indication unit, configured to insert uplink scheduling information after the downlink transport block end indication; the uplink scheduling information is used for indicating the time-frequency resources occupied by the uplink transmission of the burst data after the conversion to the user terminal.

As a possible implementation manner of the third aspect, the apparatus further includes a configuration unit, where the configuration unit is configured to:

a user terminal having a logical channel with a specific identification number;

As a possible implementation manner of the third aspect, the specific delay includes that the data delay is lower than a first set threshold; the specific data traffic requirement comprises that the maximum data burst amount is lower than a second set threshold.

As a possible implementation manner of the third aspect, the configuration unit is configured to:

dividing resources of a specific frequency domain position and width in a downlink guard band; or, outside the downlink frequency band, dividing the resources of specific frequency domain position and width;

As a possible implementation manner of the third aspect, the first detection unit is configured to:

As a possible implementation manner of the third aspect, the apparatus further includes a code block dividing unit, configured to:

determining the size of a transmission block of the user terminal before adding a downlink transmission block end indication at the end of a code block of downlink transmission;

code block division is performed on the transport block again according to the size of the code block, so that all the code blocks in the transport block are aligned with the unit time slice after the conversion.

As a possible implementation manner of the third aspect, the code block dividing unit is further configured to:

As a possible implementation manner of the third aspect, the first indicating unit is further configured to:

on a code block of a unit time slice of current downlink transmission, a puncturing or rate matching mode is utilized to ensure that time frequency resources of a part of specific quantity and/or specific position on the unit time slice are not occupied by downlink data;

A fourth aspect of the present application provides a low latency data transmission apparatus, including:

a sending unit, configured to send burst data transmission demand report information to a base station;

a second detecting unit, configured to detect whether a downlink transmission block end indication exists in a downlink transmission time slice;

an analyzing unit, configured to analyze uplink scheduling information in the time slice when it is detected that a downlink transmission block end indication exists in the time slice of the downlink transmission;

and the transmission unit is used for carrying out uplink transmission of the burst data on the time-frequency resource indicated by the uplink scheduling information.

As a possible implementation manner of the fourth aspect, the sending unit is configured to:

A fifth aspect of the present application provides a computing device comprising:

a communication interface;

at least one processor coupled with the communication interface; and

at least one memory coupled to the processor and storing program instructions that, when executed by the at least one processor, cause the at least one processor to perform the method of any of the first or second aspects.

A sixth aspect of the present application provides a computer readable storage medium having stored thereon program instructions which, when executed by a computer, cause the computer to perform the method of any of the first or second aspects described above.

These and other aspects of the invention will be apparent from and elucidated with reference to the embodiment(s) described hereinafter.

Drawings

The various features and the connections between the various features of the present invention are further described below with reference to the attached figures. The figures are exemplary, some features are not shown to scale and some of the figures may omit features customary in the art to which this application relates and which are not essential to the application or show additional features which are not essential to the application, the combination of features shown in the figures is not intended to limit the application. In addition, the same reference numerals are used throughout the specification to designate the same components. The specific drawings are illustrated below:

fig. 1 is a schematic diagram of uplink transmission timing;

fig. 2 is a schematic diagram of an embodiment of a low latency data transmission method according to an embodiment of the present application;

fig. 3 is a schematic diagram of an embodiment of a low latency data transmission method according to an embodiment of the present application;

fig. 4 is a schematic diagram illustrating an embodiment of a low latency data transmission method according to an embodiment of the present application;

fig. 5 is a schematic diagram of an embodiment of a low latency data transmission apparatus according to the present application;

fig. 6 is a schematic diagram of an embodiment of a low latency data transmission apparatus according to an embodiment of the present application;

fig. 7 is a schematic diagram of an embodiment of a low latency data transmission apparatus according to the present application;

fig. 8 is a schematic diagram of a computing device provided in an embodiment of the present application.

Detailed Description

The terms "first, second, third, etc. in the description and in the claims, or the like, may be used solely to distinguish one from another and are not intended to imply a particular order to the objects, but rather are to be construed in a manner that permits interchanging particular sequences or orderings where permissible such that embodiments of the present application may be practiced otherwise than as specifically illustrated or described herein.

In the following description, reference numerals indicating steps such as S110, S120 \ 8230 \8230 \ 8230, etc. do not necessarily indicate that the steps are performed, and the order of the front and rear steps may be interchanged or performed simultaneously, where the case allows.

The term "comprising" as used in the specification and claims should not be construed as being limited to the contents listed thereafter; it does not exclude other elements or steps. It is thus to be interpreted as specifying the presence of the stated features, integers, steps or components as referred to, but does not preclude the presence or addition of one or more other features, integers, steps or components, or groups thereof. Thus, the expression "an apparatus comprising the devices a and B" should not be limited to an apparatus consisting of only the components a and B.

Reference in the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment, but may. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments, as would be apparent to one of ordinary skill in the art from this disclosure.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. In the case of inconsistency, the meaning described in the present specification or the meaning derived from the content described in the present specification shall control. In addition, the terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the present application. To accurately describe the technical content in the present application and to accurately understand the present invention, terms used in the present specification are given the following explanation or definition before describing the specific embodiments:

1) Qos (Quality of Service): the network can provide better service capability for specified network communication by utilizing various basic technologies, is a safety mechanism of the network, and is a technology for solving the problems of network delay, network congestion and the like. QoS guarantees are important for capacity-limited networks, especially for streaming multimedia applications, which often require fixed transmission rates and are sensitive to delay.

2) Air interface: is commonly known as an air interface. Among wireless communication technologies, the "air interface" defines the technical specification of an electric wave link between a terminal device and a network device, making wireless communication as reliable as wire communication. In mobile transmissions, the air interface is a connection between a mobile subscriber and a base station via wireless communications. In a mobile phone, the air interface represents a radio transmission specification between a base station and a mobile phone, which defines the frequency and bandwidth of use of each radio channel, or defines the coding method employed. In 5G and LTE (Long Term Evolution), air interface transmission is an interface between a terminal and an access network, which is referred to as an air interface for short, for example, a wireless interface between a mobile phone and a base station.

3) FR (Frequency Range): the 5G spectrum is divided into two regions FR1 and FR2. The frequency range of FR1 is 450MHz to 6GHz, also known as: sub 6GHz (frequency band below 6 GHz). The frequency range of FR2 is 24.25GHz to 52.6GHz, also known as: millimeter wave (mmWave).

4) OFDM (Orthogonal Frequency Division Multiplexing): OFDM, an orthogonal frequency division multiplexing technology, is one of MCMs (Multi Carrier Modulation). OFDM enables parallel transmission of high-speed serial data by frequency division multiplexing. The method has better multipath fading resistance and can support multi-user access. The main idea of OFDM is as follows: the channel is divided into a plurality of orthogonal sub-channels, the high-speed data signal is converted into parallel low-speed sub-data streams, and the parallel low-speed sub-data streams are modulated to be transmitted on each sub-channel. The orthogonal signals may be separated by correlation techniques at the receiving end, which may reduce the mutual interference (ISI) between the subchannels. The signal bandwidth on each subchannel is smaller than the associated bandwidth of the channel, so that flat fading can be seen on each subchannel, thereby eliminating inter-symbol interference, and since the bandwidth of each subchannel is only a small fraction of the original channel bandwidth, channel equalization becomes relatively easy. An OFDM signal consists of a plurality of subcarrier signals that are independently modulated by different modulation symbols. The carriers in OFDM are orthogonal, each carrier has an integral number of carrier periods in a symbol time, and the frequency spectrum zero of each carrier is overlapped with the zero of the adjacent carrier, so that the interference between the carriers is reduced. Because of the partial overlap between the carriers, the frequency band utilization rate is improved compared with the traditional FDMA (frequency division multiple access).

5) MCS (Modulation and Coding Scheme, modulation and Coding strategy): the rate configuration in LTE (Long Term Evolution) is realized by MCS index values. The MCS forms a rate table with the MCS index as a row and the column of the table as the factors that affect the communication rate concerned. Therefore, each MCS index actually corresponds to a physical transmission rate under a set of parameters.

The prior art method is described first, and then the technical solution of the present application is described in detail.

The main duplex system in the wireless communication system includes: time division duplex systems, frequency division duplex systems, etc. Taking a wireless cellular communication system as an example, a 2G communication system is a time division duplex system; a WCDMA (Wideband Code Division Multiple Access) communication system is a frequency Division duplex system; both the 4G LTE (Long Term Evolution) communication system and the 5G communication system include time division duplex and frequency division duplex.

The wireless time division duplex system is characterized in that uplink transmission and downlink transmission respectively occupy non-overlapping time slices, thereby avoiding mutual interference of the uplink transmission and the downlink transmission.

When the base station has data to transmit to the terminal, the base station sends Downlink scheduling information to the terminal in a Downlink Control Channel (PDCCH), configures Downlink Shared Channel (PDSCH) time-frequency resources occupied by transmission, modulation and coding modes, beam information, redundancy versions, hybrid automatic repeat process, and the like for Downlink data transmission, and performs Downlink data transmission in a mode indicated by the Downlink Control information on the PDSCH time-frequency resources indicated by the Downlink Control information.

When the user terminal has data to transmit to the base station, scheduling Request (SR) information may be sent in an Uplink Control Channel (PUCCH), and an Uplink transmission process is triggered through the SR to request the base station to perform Uplink transmission scheduling. After receiving the SR information, the base station sends Uplink scheduling grant (UL grant) information in the PDCCH Channel, and configures Uplink Shared Channel (PUSCH) time-frequency resources occupied by transmission, modulation and coding scheme, redundancy version, hybrid automatic repeat process, and the like for Uplink data transmission. And after receiving the UL grant information in the PDCCH, the terminal transmits uplink data in an indicated manner on the PUSCH time-frequency resource indicated by the UL grant information. Fig. 1 shows a process of triggering uplink transmission through SR.

As shown in fig. 1, in the SR-triggered uplink transmission process, after data arrives at a user terminal buffer, first, a PUCCH resource available to the user needs to be waited to send an SR, where a waiting time delay d1 is an uncertain value and is related to a PUCCH resource period available to the user. After receiving the SR, the base station side needs to transmit UL grant information to the terminal after a processing delay d 2. And after receiving the UL grant information, the terminal sends uplink data on the PUSCH resource after the processing delay d 3. In the process, the SR transmission occupation duration tau 1, the UL grant transmission occupation duration tau 2, and the PUSCH transmission occupation duration tau 3. In summary, the total transmission delay τ of data transmission over the air interface can be represented by the following equation (1):

τ＝d1+τ1+d2+τ2+d3+τ3 (1)

in the LTE communication system, the minimum cycle of SR transmission is 1ms. The time slice of the uplink transmission in LTE is a subframe (1 ms), and the interval is also 1ms at minimum. The interval of the partial allocation downlink and uplink subframes may be 5ms to 9ms. The processing delay d2 is typically around 3ms. The processing delay d3 is 3ms to 6ms. The transmission delay of SR, UL grant, PUSCH is all 1ms. According to the formula (1), under different TDD (Time Division duplex) uplink and downlink configurations, even if a transmission configuration that reduces the delay as much as possible is adopted, the uplink air interface transmission delay of LTE is about 10ms at the minimum and about 23ms at the maximum.

In the 5G communication system, for example, FR1 and a subcarrier spacing of 30kHz are used, and when Mini-slots (minislots) are not used, the unit of resource scheduling is a slot (slot) having a length of 0.5ms. The minimum processing delay d1 is 0.5ms, the minimum processing delay d2 is about 1ms, and the minimum processing delay d3 is 0. The transmission delay of SR, UL grant and PUSCH are all 0.5ms. According to the formula (1), under the best condition, the uplink air interface transmission delay of the LTE is about 3ms at minimum.

In the prior art, the following method is generally adopted to reduce the air interface transmission delay:

1) Mini-slot (micro slot)

In order to reduce the air interface transmission delay, mini-slot is introduced into 4G and 5G systems. The Mini-slot realizes the faster conversion of uplink and downlink resources in time by reducing the time unit of uplink and downlink scheduling. In combination with the uplink transmission process described in fig. 1, when the uplink and downlink resource conversion interval becomes smaller, each processing delay and transmission delay are correspondingly reduced, so as to achieve the purpose of reducing the transmission delay of the air interface.

2) Semi-persistent scheduling

Semi-persistent (SPS) scheduling techniques have been introduced in 4G and 5G systems to reduce air-interface transmission delay. The technique semi-statically configures periodic transmission resources for a user terminal over a period of time through higher layer signaling and triggers in a semi-static or dynamic manner. And the user terminal receives downlink data on the configured periodic PDSCH time frequency resource or sends uplink data on the configured periodic PUSCH time frequency resource in the configured time range. For uplink transmission, because the base station configures time-frequency resources for the terminal, resource scheduling does not need to be applied through an SR, and UL grant information is also not needed, air interface delay caused by a signaling process is reduced.

The prior art has the following defects:

(1) The Mini-slot technique has the following problems in practical applications:

I. in order to avoid the interference of the downlink signal to the uplink signal, a guard interval needs to be added to switch from the downlink time slice to the uplink time slice in the TDD system. Frequent switching of uplink and downlink time slices can cause a large amount of guard time intervals to be inserted, so that the utilization rate of system resources is reduced;

smaller uplink and downlink time slice switching time intervals provide greater challenges for the processing capacities of the base station and the terminal, and simultaneously increase the power consumption of the terminal and the base station equipment;

and III, in order to improve the uplink and downlink switching speed and inhibit the reduction of the system resource utilization rate as much as possible, the protection time interval needs to be configured to be as small as possible. However, the small guard interval may limit the coverage of the cell.

(2) Semi-persistent scheduling

The semi-persistent scheduling has the problem that the time delay and the utilization rate of system resources are difficult to balance. Unless the base station knows the service data throughput of the user terminal, the base station is difficult to configure a proper time-frequency resource period so as to meet the service delay requirement and not configure too many resources to influence the overall resource utilization rate of the system.

In summary, on the one hand, the process of the user terminal applying for the PUSCH resource through the SR brings an uplink and downlink signaling interaction process, and a large transmission delay is caused in a communication scheme in which uplink and downlink resources are divided in units of fixed-length time slices such as time slots, subframes, frames, and the like. On the other hand, although the base station side can reduce the transmission delay caused by the signaling process by configuring the predefined semi-persistent time-frequency resource for the user terminal, the adoption of the semi-persistent scheduling is only suitable for the service with fixed data rate, and the efficiency of the service with burst characteristic or uneven data time domain distribution is low. The existing Mini-slot technology for reducing the uplink and downlink resource conversion interval adopts a semi-static signaling notification frame structure, and can only wholly divide uplink and downlink time slices in the whole bandwidth or the whole bandwidth part (BWP), so that the problem of resource waste of a protection interval caused by frequent uplink and downlink switching of a large bandwidth can be caused by influencing all service types and all user terminals, the pressure of power consumption, calculation power and the like is caused to at least part of low-calculation-power terminals in a system, and the problem of coverage is caused to at least part of terminals.

Based on the technical problems in the prior art, the present application provides a data transmission method. The method utilizes the downlink transmission block end indication to convert a part of downlink resources into uplink resources for sending burst service data under the condition of detecting the report information of the burst data transmission requirement, and utilizes the uplink scheduling information to dynamically schedule the transmission of the burst service data, thereby being capable of pertinently allocating the resources for the service according to the requirement, reducing or avoiding the influence of the burst data on other users and services in the system, reducing the transmission delay of the communication system and improving the data transmission efficiency.

On one hand, the method does not need to configure smaller uplink and downlink time slices, thereby avoiding the technical problems of reduced utilization rate of system resources caused by frequent switching of the uplink and downlink time slices, increased power consumption of the terminal and the base station equipment caused by smaller switching of the uplink and downlink time slices, limited coverage area of a cell caused by small configuration of a protection time interval and the like caused by the Mini-slot technology.

On the other hand, in the method, when the user terminal has a burst data transmission requirement, the user terminal may send the report information of the burst data transmission requirement to the base station. The base station can configure uplink resources for the user terminal for burst data transmission after detecting the information. Therefore, the method can be used for pertinently distributing resources for the service according to the requirement, reducing or avoiding the influence of the user terminal with uneven time domain distribution of burst data or data on other users and services in the system, and avoiding the technical problems of the prior art that the utilization rate of system resources is reduced and the communication efficiency is low due to semi-persistent scheduling.

Fig. 2 is a schematic diagram of an embodiment of a data transmission method according to an embodiment of the present application. The data transmission method can be applied to the base station side. As shown in fig. 2, the method may include:

step S110, detecting the report information of the burst data transmission requirement from the user terminal;

step S120, under the condition that the report information of the burst data transmission requirement is detected, adding a downlink transmission block end instruction at the end of a code block of downlink transmission; the downlink transmission block end indication is used for indicating that downlink resources are converted into uplink resources for burst data transmission;

step S130, inserting uplink scheduling information after the downlink transmission block end indication; the uplink scheduling information is used for indicating the time-frequency resources occupied by the uplink transmission of the burst data after the conversion to the user terminal.

In an actual communication system, the arrival time of burst-type service data is not fixed. In the embodiment of the application, the base station may allocate, in advance, a resource for sending the information required to report the burst data transmission to the user terminal. The user terminal with the burst type service data transmission requirement can send the report information of the burst type service data transmission requirement at any time and inform the base station of the service resource requirement. And the base station reports information according to the burst data transmission requirement and adds a downlink transmission block end indication at the end of a code block for downlink transmission. The downlink transmission block end indication can be used as a conversion mark between downlink transmission and uplink transmission, dynamically convert a part of downlink resources into uplink resources for burst-type service data transmission, and insert uplink scheduling information after the downlink transmission block end indication for scheduling the transmission of the burst-type service data. By adopting the above mode to transmit data, resources can be allocated for services in a targeted manner according to time-sensitive service requirements, and the influence of uneven time domain distribution of burst-type service data and data on other users and services in the system is reduced or avoided.

Specifically, in step S110, the base station detects the burst data transmission requirement reporting information on the resource allocated by the base station for the user terminal to send the burst data transmission requirement reporting information in the downlink transmission time slice, so as to determine whether the allocated resource has the burst data transmission requirement reporting information sent by the user terminal.

In step S120, when the base station detects the report information of the burst data transmission requirement, the base station adds a downlink transmission block end indicator to the end of the code block for downlink transmission. The downlink transmission block end indicator is used for indicating that the downlink resource is converted into the uplink resource for burst data transmission, that is, ending the downlink transmission occupying the resource which needs to be subjected to downlink/uplink conversion, so as to start the downlink/uplink conversion.

In step S130, the base station may further insert uplink scheduling information after the downlink transmission block end indication when the reporting information of the burst data transmission requirement is detected, so as to perform dynamic scheduling on the uplink transmission after the downlink/uplink conversion. Specifically, the base station may send uplink scheduling information of uplink transmission after the conversion on the time-frequency resource of a specific length and/or a specific position of the downlink/uplink conversion unit time slice currently inserted with the downlink transmission block end indication.

In an example, the base station may indicate, in the uplink scheduling information, at least one of each user terminal performing uplink transmission after downlink/uplink switching, time-frequency resources occupied by each user terminal performing uplink transmission, MCS information of each uplink transmission, and an uplink process number used for transmission.

The base station may preferentially schedule user terminals having the following characteristics: the user terminal has a specific delay sensitive and data flow QoS requirement service, or activated logic channels with specific identification numbers exist, or activated logic channel groups with specific identification numbers exist.

In the embodiment of the application, under the condition that the information reporting requirement of burst data transmission is detected, a part of downlink resources are converted into uplink resources by using the downlink transmission block end indication for sending burst service data, and the transmission of the burst service data is dynamically scheduled by using the uplink scheduling information, so that the resources can be pertinently allocated to the service according to the requirement, the influence of the burst data on other users and services in the system is reduced or avoided, the transmission delay of the communication system is reduced, and the data transmission efficiency is improved.

In one embodiment, the method further comprises:

configuring resources for sending the burst data transmission requirement reporting information aiming at a specific user terminal; the specific user terminal is a user terminal with a specific delay and a specific data traffic demand service, or the specific user terminal includes at least one of the following:

a user terminal having a logical channel with a specific identification number;

wherein the logical channel and the logical channel group indicated by the specific identification number correspond to services with specific time delay and specific data flow requirements.

In the embodiment of the application, a base station allocates resources for a user terminal to send burst data transmission requirement report information for a service with specific delay sensitivity and data flow QoS requirements of the user terminal, or for a logical channel with a specific identification number which is activated, or for a logical channel group with a specific identification number which is activated, so that the terminal can send the burst data transmission requirement report information on the resources allocated by the base station.

In one embodiment, the specific delay includes that the data delay is lower than a first set threshold; the specific data traffic requirement comprises that the maximum data burst amount is lower than a second set threshold.

In one example, the first set threshold is set to 50ms; the second set threshold is set to 128bytes. The traffic having the specific delay sensitivity and data traffic QoS requirements may include traffic having the following characteristics: the packet delay budget is below 50ms and the maximum data burst size is below 128bytes.

In the embodiment of the application, a base station side configures resources for sending the burst data transmission demand report information for a user terminal with a delay sensitive service. After receiving the information reported by the burst data transmission requirement, the base station can convert the uplink resource into the uplink resource for burst data transmission. The resources are reasonably distributed by adopting the mode, so that the transmission delay can be effectively reduced. In addition, for a user terminal with a service with a high data burst, more resources need to be allocated to the user terminal to meet the transmission requirement of the data burst. Therefore, for a user terminal with a service with a high data burst, the transmission requirement of the data burst may not be satisfied by using the above-mentioned method of converting the uplink resource into the uplink resource. In the embodiment of the application, the resource for sending the information reported by the burst data transmission requirement is configured for the user terminal with the service sensitive to time delay and low in data burst, so that the transmission time delay can be effectively reduced, and the data transmission efficiency is improved.

In one embodiment, the configuring, for a specific ue, resources for sending the reporting information of the burst data transmission requirement includes:

Specifically, the base station divides the resources of a specific frequency domain position and width in its downlink guard band, and configures the resources of the specific frequency domain position and width to a specific user terminal through semi-static signaling. For example, the system uses an 18MHz effective downstream system bandwidth with 1MHz guard bands on either side. The base station divides a physical resource block in a guard band at the low frequency side. In one example, the physical resource block may contain 12 consecutive subcarriers spaced 15kHz apart. The base station notifies the location of the physical resource block to a specific user terminal in the system.

Or, the base station divides the resources of the specific frequency domain position and width outside the downlink frequency band, and configures the resources of the specific frequency domain position and width to the specific user terminal through semi-static signaling. For example, the system divides one physical resource block in an uplink frequency band of a certain system, and notifies a specific user terminal in the system of the position of the physical resource block.

In an embodiment, the detecting the reporting information of the burst data transmission requirement from the user terminal includes:

receiving data on resources used for sending the information reported by the burst data transmission requirement in each OFDM symbol time in a downlink time slice;

The "information sequence for reporting burst data transmission requirement" may be a Gold sequence or a Chu sequence. When a user terminal transmits data, orthogonal processing needs to be performed between the data to be transmitted and other user terminals. When receiving data, it is necessary to detect and restore the processed data, that is, to perform correlation operation on the received data and the sequence corresponding to the cell of each ue, so as to determine which ue the received data comes from. The result of the correlation operation indicates the correlation of the received data with the local sequence. The preset threshold may be preset, and the threshold may be an empirical value. And judging whether the cell has the user terminal to send the burst data transmission demand report information or not by comparing the correlation operation result with a preset threshold value. If the result of the correlation operation exceeds the preset threshold value, the base station receives the burst data transmission requirement report information sent by the user terminal.

Fig. 3 is a schematic diagram of an embodiment of a data transmission method according to an embodiment of the present application. As shown in fig. 3, in an embodiment, in step S120 in fig. 2, before adding a downlink transmission block end indication to the end of a code block in a downlink transmission, the method further includes:

step S210, determining the size of the transmission block of the user terminal;

step S220, calculating the size of each code block according to the number of the resource elements in the unit time slice after the conversion and the downlink transmission target code rate;

step S230, code block division is performed on the transport block again according to the size of the code block, so that all the code blocks in the transport block are aligned with the unit time slice after the conversion.

Referring to fig. 2 and 3, "downlink/uplink switching" in step S120 refers to a transition of a certain time slice from downlink transmission to uplink transmission in a downlink time slot, subframe or frame indicated in the downlink configuration on TDD. The "unit time slice of downlink/uplink switching", that is, the unit time slice after switching, refers to a basic time slice length for maintaining downlink transmission or uplink transmission in a downlink time slot, subframe or frame where the downlink/uplink switching is located. E.g., 1 OFDM symbol length, or 2 OFDM symbol lengths, etc.

In a communication system, the transport block sizes of different user terminals, different services may be different. The base station schedules downlink transmission of the user terminal, and after the size of a transmission block of the user terminal is determined, the size of each code block can be calculated according to the number of Resource Elements (REs) in each downlink/uplink conversion unit time slice contained in a scheduling time slice and a downlink transmission target code rate. The code blocks of the transmission block can be divided again according to the calculated size of the code blocks, so that all the code blocks in the transmission block are aligned according to the downlink/uplink conversion unit time slices under the condition of the width of the scheduled frequency resource, namely, each code block in the transmission block of the user terminal is only positioned in one downlink/uplink conversion unit time slice.

The above code block division rule may include at least one of the following ways:

I. and starting from the code block with a lower sequence number, sequentially dividing the code blocks from low to high according to the sequence number.

II, the calculation method of the number of resource elements occupied by a certain code block comprises the following steps: and dividing the code block size by the target code rate of downlink transmission of the user terminal, and then taking an integer to obtain an integer value.

The rounding operation includes, but is not limited to, rounding up, rounding down, and the like. The following equation (2) can be used for the calculation:

in the formula (2), R represents a downlink transmission target code rate; c _n，k Indicating the size of the nth code block in the kth downlink/uplink conversion unit time slice; l is a radical of an alcohol _n，k The resource element quantity occupied by the nth code block in the kth downlink/uplink conversion unit time slice is represented; int (·) represents the above rounding operation.

The "nth code block in the kth downlink/uplink conversion unit time slice" refers to: and in the kth downlink/uplink conversion time slice, the nth code block, which occupies all or part of the resource elements from the first occupied resource element, is in the kth downlink/uplink conversion time slice.

And III, if the total occupied time domain width of the adjacent 2 or more than 2 code blocks exceeds one downlink/uplink conversion unit time slice and the downlink/uplink conversion unit time slices cannot be aligned, subdividing data contained in the adjacent code blocks into a plurality of code blocks with the same size and the length not greater than the maximum code block length specified by the system, wherein the number of the code blocks is the smallest, and aligning the code blocks generated by the subdivision with the downlink/uplink conversion unit time slices.

Since the total resource time domain width occupied by the adjacent 2 or more than 2 code blocks exceeds one downlink/uplink conversion unit time slice, after the code blocks generated by the subdivision are aligned with one downlink/uplink conversion unit time slice, the data volume exceeds the part of one downlink/uplink conversion unit time slice, and the last code block generated by the division is formed. The last code block generated by the division does not occupy the code block in the time slice of the downlink/uplink conversion unit, and can be combined with the subsequent code block and then divided again. The above division can be expressed by the following formula:

If L _1，k +L _2，k +…+L _N，k ＞M _k (3)

then C' _1，k ＝C′ _2，k ＝…C′ _N′-1，k ＝int(M _k ·R/N′) (4)

C′ _N′，k ＝int((M _k -int(C′ _1，k /R)-int(C′ _2，k /R)-…-int(C′ _N′-1，k /R))·R) (5)

Wherein M is _k Indicating the number of resource elements of the kth downlink/uplink conversion unit time slice. Formula (3) shows that the total resource time domain width occupied by the N code blocks exceeds one downlink/uplink conversion unit time slice.

Equation (4) represents that the data contained in N adjacent code blocks is subdivided into the least number N' -1 code blocks of equal size and length no greater than the system-specified maximum code block length. Wherein N 'is C' _1，k 、C′ _2，k 、…、C′ _N′，k Is no greater than the number of code blocks in one conversion unit time slice that is less than the system-defined maximum code block size.

Formula (5) shows that the last code block generated by the division does not occupy the code block in the unit time slice of the downlink/uplink conversion, and can be combined with the subsequent code block and then divided again.

And IV, if the occupied time slice width of a certain code block exceeds one downlink/uplink conversion unit time slice, truncating the code block until the occupied time slice width is equal to one downlink/uplink conversion unit time slice, and merging and dividing the data which is not distributed after truncation and the next code block. The above division can be expressed by the following formula:

If L _1，k ＞M _k (6)

then C' _1，k ＝int(M _k ·R) (7)

The above equation (6) indicates that the code block occupies a time slice width exceeding one downlink/uplink conversion unit time slice. Equation (7) indicates that the code block is truncated to occupy a time slice width equal to one downlink/uplink conversion unit time slice.

V. partitioning should minimize the number of code blocks in each downlink/uplink conversion unit time slice, and the code block sizes are as same as possible.

The above division is adopted so that all code blocks in the transport block are aligned with the unit time slice after the conversion. The alignment has the effect that the condition that one code block fully or partially occupies two or more resource elements is not generated, namely the condition that the code block spans resources is not generated, so that the demodulation time can be reduced, the communication data transmission time delay is further reduced, and the transmission efficiency is improved.

In one embodiment, the method further comprises:

As described above, the downlink transmission according to the embodiment of the present application includes the code block whose size can be determined according to the number of time-frequency resources in the unit time slice of the downlink/uplink conversion and the target code rate. When the base station uses dynamic Downlink Control Information (DCI) to schedule the downlink transmission, the base station may indicate, in a DCI signaling, the number of resource elements in a unit time slice after the conversion corresponding to the transmission usage and the size of the code block.

In one embodiment, the appending of the downlink transmission block end indication at the end of the code block of the downlink transmission includes:

If the base station detects the reporting information of the burst data transmission requirement on the resources which are allocated by the base station and used for reporting the information of the burst data transmission requirement when the base station sends the downlink data on a certain downlink/uplink conversion unit time slice, the base station uses a puncturing (puncturing) or rate matching method on the code block on the current downlink/uplink conversion unit time slice to ensure that part of the time-frequency resources with specific quantity and/or specific positions in the downlink/uplink conversion unit time slice are not occupied by the downlink data. And the base station sends the transmission block end indication on the time-frequency resources of the specific quantity and/or the specific position which are not occupied by the downlink data.

The specific number of time-frequency resources refers to the number of resource elements in a specific number, or the number of physical resource blocks in a specific number, or the number of resource elements in a specific number in a specific time width, or the number of physical resource blocks in a specific number in a specific time width.

In the embodiment of the present application, the transmission block end indication may use a sequence flag such as a Gold sequence or a Chu sequence with a specific length.

In summary, the embodiment of the present application utilizes a guard band or a small amount of resources outside the effective transmission bandwidth of the system, so that the user terminal with the burst service can notify the base station of the service resource requirement at any time. The base station uses a variable code block adaptive to resource distribution on downlink transmission, dynamically converts a part of downlink resources into uplink resources for burst service data transmission by using a downlink/uplink conversion mark according to the resource demand report condition of the burst service, and schedules the burst service transmission by using predefined resource configuration information or simplified dynamic scheduling information, thereby achieving the effect of pertinently allocating resources for the service according to the time-sensitive service demand and reducing or avoiding the influence of the burst service on other users and services in the system.

Fig. 4 is a schematic diagram of an embodiment of a data transmission method according to an embodiment of the present application. The data transmission method can be applied to the user terminal side. As shown in fig. 4, the method may include:

step S310, sending the report information of the burst data transmission requirement to the base station;

step S320, detecting whether a downlink transmission block end instruction exists in the downlink transmission time slice;

step S330, analyzing the uplink scheduling information in the time slice when detecting that the downlink transmission block end indication exists in the time slice of the downlink transmission;

step S340, performing uplink transmission of burst data on the time-frequency resource indicated by the uplink scheduling information.

In the embodiment of the application, the base station side can pre-allocate resources for sending the burst data transmission demand report information for the user terminal. The user terminal with burst type service data transmission requirement can send the report information of burst type service data transmission requirement at any time and inform the base station of the service resource requirement. In step S310, the ue may send the report information of the burst data transmission requirement to the base station on the allocated resources.

Referring to fig. 1 again, the base station detects the burst data transmission requirement reporting information on the resource allocated by the base station for the user terminal to send the burst data transmission requirement reporting information in the downlink transmission time slice, so as to determine whether the allocated resource has the burst data transmission requirement reporting information sent by the user terminal. And under the condition that the base station detects the report information of the burst data transmission requirement, adding a downlink transmission block end instruction at the end of a code block for downlink transmission, and inserting uplink scheduling information after the downlink transmission block end instruction. In step S320 and step S330, the ue detects whether there is a transport block end indication for each downlink/uplink conversion unit time slice in the downlink transmission. When detecting that a transmission block end indication exists in a certain downlink/uplink conversion unit time slice, the user terminal demodulates the uplink scheduling information on the specific time-frequency resource of the downlink/uplink conversion unit time slice, and analyzes the uplink scheduling information of the base station to the user terminal. In step S340, if the uplink scheduling information for the ue exists on the specific time-frequency resource, the ue sends uplink data on the indicated time-frequency resource according to the uplink scheduling information.

In the embodiment of the application, the user terminal may preferentially send a service with a specific delay sensitivity and a data traffic QoS requirement, or may have an activated logical channel with a specific identification number, or may have data of an activated logical channel group with a specific identification number.

In the embodiment of the application, the user terminal with the burst-type service data transmission requirement can inform the base station of the service resource requirement, and the base station is utilized to perform uplink transmission of burst data according to the time-frequency resource allocated by the resource requirement. The data transmission mode can meet the data transmission requirement of the burst-type service of the user terminal, reduce or avoid the influence of uneven time domain distribution of burst data and data on other users and services in the system, reduce the transmission time delay of the communication system and improve the data transmission efficiency.

In an embodiment, the sending the report information of the burst data transmission requirement to the base station includes:

In the embodiment of the application, the base station side can divide resources of specific frequency domain positions and widths in a downlink guard band; or, outside the downlink frequency band, dividing the resources of specific frequency domain position and width; and then sending configuration information to the user terminal through a semi-static signaling, and configuring the resource with the specific frequency domain position and width to the specific user terminal for sending the burst data transmission requirement reporting information on the resource. The user terminal receives the semi-static signaling from the base station, acquires the configuration information from the semi-static signaling, and sends the resource of the information reported by the burst data transmission requirement by using the resource of the specific frequency domain position and width divided in the configuration information.

Referring to fig. 3 again, the base station side schedules the downlink transmission of the user terminal, and after determining the size of the transmission block of the user terminal, the size of each code block can be calculated according to the number of resource elements in each downlink/uplink conversion unit time slice included in the scheduling time slice and the target code rate of the downlink transmission. And then code block division is carried out on the transmission block again according to the calculated size of the code block, so that all the code blocks in the transmission block are aligned according to the downlink/uplink conversion unit time slices under the condition of the scheduled frequency resource width. The alignment has the effect that the condition that one code block occupies 2 or more resource elements completely or partially is not generated, that is, the condition that the code block spans resources is not generated, so that the demodulation time can be reduced, the communication data transmission delay is further reduced, and the transmission efficiency is improved. And when the base station uses the dynamic downlink control information to carry out downlink transmission scheduling, indicating the number of resource elements in the unit time slice after conversion and the size of the code block in a signaling of the downlink control information.

On the basis, when the user terminal uses the code block of which the size can be determined according to the quantity of time-frequency resources in a unit time domain time slice for performing downlink/uplink conversion according to the dynamic downlink control information sent by the base station, whether a transmission block end indication exists in each downlink/uplink conversion unit time slice in the transmission is detected. When detecting that a transmission block end indication exists in a certain downlink/uplink conversion unit time slice, the user terminal analyzes uplink scheduling information on a specific time frequency resource of the downlink/uplink conversion unit time slice, and transmits uplink data on the time frequency resource indicated by the uplink scheduling information.

For the beneficial effects or technical problems to be solved of the data transmission method applied to the ue side provided in the present application, reference may be made to the description in the data transmission method applied to the base station side, or to the description in the summary of the invention, and details are not repeated here.

As shown in fig. 5, the present application further provides a corresponding embodiment of a data transmission apparatus applied to a base station side, and for beneficial effects or technical problems to be solved by the apparatus, reference may be made to descriptions in methods respectively corresponding to the apparatuses, or to descriptions in the summary of the invention, and details are not repeated here.

In an embodiment of the data transmission device, the device comprises:

a first detecting unit 100, configured to detect information reported by a burst data transmission requirement from a user equipment;

a first indication unit 200, configured to add a downlink transmission block end indication to an end of a code block for downlink transmission when the report information of the burst data transmission requirement is detected; the downlink transmission block end indication is used for indicating that downlink resources are converted into uplink resources for burst data transmission;

a second indicating unit 300, configured to insert uplink scheduling information after the downlink transport block end indication; the uplink scheduling information is used for indicating the time-frequency resources occupied by the uplink transmission of the burst data after the conversion to the user terminal.

As shown in fig. 6, in an embodiment, the apparatus further comprises a configuration unit 400, the configuration unit 400 is configured to:

a user terminal having a logical channel with a specific identification number;

In one embodiment, the configuration unit 400 is configured to:

In one embodiment, the first detection unit 100 is configured to:

As shown in fig. 6, in an embodiment, the apparatus further includes a code block dividing unit 500, where the code block dividing unit 500 is configured to:

In one embodiment, the code block dividing unit 500 is further configured to:

In one embodiment, the first indicating unit 200 is further configured to:

As shown in fig. 7, the present application further provides a corresponding embodiment of a data transmission apparatus applied to a user terminal, and for beneficial effects or technical problems to be solved by the apparatus, reference may be made to descriptions in methods respectively corresponding to the apparatuses, or to descriptions in the summary of the invention, and details are not repeated here.

In an embodiment of the data transmission device, the device comprises:

a sending unit 600, configured to send information on a transmission requirement report of burst data to a base station;

a second detecting unit 700, configured to detect whether a downlink transmission block end indication exists in a time slice of downlink transmission;

an analyzing unit 800, configured to analyze uplink scheduling information in the time slice when it is detected that a downlink transmission block end indication exists in the time slice of the downlink transmission;

a transmission unit 900, configured to perform uplink transmission of the burst data on the time-frequency resource indicated by the uplink scheduling information.

In one embodiment, the sending unit 600 is configured to:

Fig. 8 is a schematic structural diagram of a computing device 900 provided in an embodiment of the present application. The computing device 900 includes: a processor 910, a memory 920, and a communication interface 930.

It is to be appreciated that the communication interface 930 in the computing device 900 shown in fig. 8 may be used to communicate with other devices.

The processor 910 may be connected to the memory 920. The memory 920 may be used to store the program codes and data. Therefore, the memory 920 may be a storage unit inside the processor 910, an external storage unit independent of the processor 910, or a component including a storage unit inside the processor 910 and an external storage unit independent of the processor 910.

Optionally, computing device 900 may also include a bus. The memory 920 and the communication interface 930 may be connected to the processor 910 through a bus. The bus may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc.

It should be understood that, in the embodiment of the present application, the processor 910 may employ a Central Processing Unit (CPU). The processor may also be other general purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. Or the processor 910 may employ one or more integrated circuits for executing related programs to implement the technical solutions provided in the embodiments of the present application.

The memory 920 may include a read-only memory and a random access memory, and provides instructions and data to the processor 910. A portion of the processor 910 may also include non-volatile random access memory. For example, the processor 910 may also store device type information.

When the computing device 900 is running, the processor 910 executes the computer-executable instructions in the memory 920 to perform the operational steps of the above-described method.

It should be understood that the computing device 900 according to the embodiment of the present application may correspond to a corresponding main body executing a method according to each embodiment of the present application, and the above and other operations and/or functions of each module in the computing device 900 are respectively for implementing a corresponding flow of each method of the embodiment, and are not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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 functions may be stored in a computer-readable storage medium if they are implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) 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.

Embodiments of the present application further provide a computer-readable storage medium, on which a computer program is stored, where the computer program is used to execute a diversification problem generation method, where the method includes at least one of the solutions described in the above embodiments.

The computer storage media of embodiments of the present application may take any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Computer program code for carrying out operations for aspects of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).

It should be noted that the foregoing is only illustrative of the preferred embodiments of the present application and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention.

Claims

1. A low latency data transmission method, comprising:

detecting the reporting information of the burst data transmission requirement from the user terminal;

2. The method of claim 1, further comprising:

configuring resources for sending the burst data transmission demand report information aiming at a specific user terminal; the specific user terminal is a user terminal having a service with a specific delay and a specific data traffic requirement, or the specific user terminal includes at least one of the following:

a user terminal having a logical channel with a specific identification number;

3. The method of claim 2, wherein the specific delay comprises a data delay below a first set threshold; the specific data traffic requirement comprises that the maximum data burst amount is lower than a second set threshold.

4. The method of claim 2, wherein the configuring, for a specific ue, resources for sending the reporting information of the burst data transmission requirement comprises:

5. The method according to any one of claims 1 to 4, wherein the detecting the reporting information of the burst data transmission requirement from the user terminal comprises:

6. The method according to any of claims 1 to 4, wherein before appending an end of downlink transmission block indication at the end of a code block of a downlink transmission, further comprising:

determining a transport block size of the user terminal;

7. The method of claim 6, further comprising:

8. The method according to any of claims 1 to 4, wherein said appending an end of downlink transmission block indication at the end of a code block of a downlink transmission comprises:

9. A low latency data transmission method, comprising:

sending the report information of the burst data transmission requirement to a base station;

detecting whether a downlink transmission block end indication exists in a downlink transmission time slice or not;

10. The method of claim 9, wherein the sending the report information of the burst data transmission requirement to the base station comprises:

11. A low latency data transmission apparatus, comprising:

12. A low latency data transmission apparatus, comprising: