CN114828087A

CN114828087A - Data transmission method, terminal, network side equipment and computer readable storage medium

Info

Publication number: CN114828087A
Application number: CN202110064999.6A
Authority: CN
Inventors: 苗金华; 谌丽
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2022-07-29
Also published as: WO2022152044A1

Abstract

The embodiment of the application provides a data transmission method, a terminal, network side equipment and a computer readable storage medium, and relates to the technical field of communication. The method is executed by a terminal and comprises the following steps: when the transmission of the uplink data fails, starting first equipment for timing; and when the timing of the first equipment meets the condition, executing data transmission operation. The embodiment of the application provides an effective solution implemented by a terminal device for the situation that the service reliability is reduced due to the timeout of the survivor time and the reliability requirement of service transmission cannot be met.

Description

Data transmission method, terminal, network side device and computer readable storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a data transmission method, a terminal, a network side device, and a computer-readable storage medium.

Background

In the industrial internet, in addition to traditional parameters such as transmission interval, message size and time delay, the service demand parameters of some communication services also introduce survivability time, and the parameters are used for representing the availability of the services.

And when the data transmission is wrong, starting a survivability time, considering that the service transmission is available if the subsequent data can be correctly transmitted during the valid period of the survivability time, and considering that a communication link between the source equipment and the target equipment is unavailable if the survivability time is over and the data can not be correctly transmitted.

After the survivability time expires, the channel is considered unreliable. In order to avoid the influence on service transmission caused by timeout of the survival time, the current solutions are all realized by focusing on network side equipment, and terminal side equipment does not have a corresponding solution.

Disclosure of Invention

The application provides a data transmission method, a terminal, a network side device and a computer readable storage medium, which can solve the problem that the terminal cannot meet the service transmission quality of service (QoS) performance by improving the service reliability when finding that the uplink data transmission fails. The technical scheme is as follows:

in a first aspect, a data transmission method is provided, which is performed by a terminal, and includes:

when the transmission of the uplink data fails, starting first equipment for timing;

and when the timing of the first equipment meets the condition, executing data transmission operation.

In one possible implementation, the first device includes: a first timer or a first counter, the timing of the first device satisfying a condition comprising:

the timing of the first timer exceeds a preset time length; or,

the count of the first counter reaches a predetermined count value.

In yet another possible implementation manner, the predetermined duration or the predetermined count value is determined by a survival time corresponding to a first logical channel group, and the survival time is obtained by configuring, by the network side device, a bearer corresponding to the first logical channel group.

In yet another possible implementation manner, the case of uplink data transmission failure includes at least one of:

when the terminal prepares to execute uplink UL data transmission, the priority of a data packet is reduced;

when the terminal prepares to execute the UL data transmission, a Listen Before Talk (LBT) failure occurs;

in the process that the terminal executes the UL data transmission, the transmission of the data packet is interrupted;

after the UL data is transmitted, retransmission scheduling information aiming at the data packet sent by network side equipment is received;

after the UL data is transmitted, receiving a feedback message which is sent by the network side equipment and indicates that the data packet transmission fails;

the configuration of the terminal authorizes the CGRT timeout of the retransmission timer.

In yet another possible implementation, the performing the data transfer operation includes at least one of:

retransmitting the first data packet by a preset repetition number, wherein the preset repetition number is more than or equal to 2;

retransmitting a first data packet on configured transmission resources in a first modulation and coding mode, wherein the MCS value of the first modulation and coding mode is lower than the MCS value of the original modulation and coding mode for transmitting the first data packet;

transmitting a first data packet by adopting a replication mode, wherein the replication mode comprises the following steps: a set carrier CA replication mode or a dual-link DC replication mode;

and transmitting a first data packet on a second logical channel, wherein the priority of the second logical channel is higher than that of the first logical channel, and the first logical channel and the second logical channel are both logical channels in a first logical channel group.

In yet another possible implementation, the first data packet includes any one of the following data packets:

a data packet with a reduced priority;

transmitting the interrupted data packet;

data packets not transmitted due to LBT failure;

the network side equipment feeds back a data packet which fails to be transmitted;

after the CGRT is overtime, the data packet which is successfully transmitted by the network side equipment is not received;

a newly transmitted data packet.

In yet another possible implementation manner, if the data transmission operation is performed to retransmit the first data packet on the configured transmission resource in the first modulation and coding manner, the method further includes:

and when the first data packet is successfully transmitted, transmitting a subsequent uplink data packet on the configured transmission resource in the first modulation coding mode.

In yet another possible implementation manner, the predetermined duration of the first timer is configured by a network side device, the first timer is configured by the network side device for a first logical channel group of the terminal, and the first logical channel group includes two or more logical channels;

the first counter counts data packets that have failed to be transmitted in the first logical channel group, a predetermined count value of the first counter is configured by the network side device, and the first counter is configured by the network side device for the first logical channel group of the terminal.

In yet another possible implementation, the method further includes:

and when the terminal successfully executes data transmission, triggering the first equipment to be closed.

In yet another possible implementation manner, the case that the data transmission performed by the terminal is successful includes at least one of:

receiving a feedback message which indicates that data transmission is successful and is sent by network side equipment;

receiving new transmission scheduling information aiming at a first logic channel group, which is sent by the network side equipment;

the configuration of the terminal authorizes the CGT timer to time out.

In yet another possible implementation, the method further includes:

and reporting indication information to the network side equipment, wherein the indication information is used for indicating that the first logic channel is unreliable.

In yet another possible implementation manner, after the starting of the first device for timing, the method further includes:

starting a second device for timing;

the reporting of the indication information to the network side device includes:

and when the timing of the second equipment meets the condition, reporting the indication information to the network side equipment.

In a second aspect, a data transmission method is provided, where the method is performed by a network side device, and the method includes:

determining configuration parameters of a first device;

configuring the first device for a first logical channel group of a terminal so that the first device for timing is started when the terminal fails to perform data transmission, wherein the first logical channel group comprises two or more logical channels.

In one possible implementation, the determining the configuration parameter of the first device includes:

configuring survival time for the bearer corresponding to the first logical channel group;

determining configuration parameters of the first device according to the survival time.

In another possible implementation manner, the configuring the first device for the first logical channel group of the terminal includes:

and configuring the configuration parameters of the first equipment to the terminal through an RRC reconfiguration message.

In yet another possible implementation manner, the method further includes:

and receiving indication information reported by the terminal, wherein the indication information is used for indicating that the first logic channel is unreliable.

In a third aspect, a terminal device is provided, which includes:

a memory for storing a computer program;

a transceiver for transceiving data under control of the processor;

a processor for reading the computer program in the memory and performing the following operations:

In one possible implementation form of the method,

the first device includes: a first timer or a first counter, the timing of the first device satisfying a condition comprising:

the timing of the first timer exceeds a preset time length; or,

the count of the first counter reaches a predetermined count value.

In another possible implementation manner, the processor is further configured to trigger the first device to turn off when the data transmission performed by the terminal is successful.

In another possible implementation manner, the transceiver is specifically configured to report indication information to a network side device, where the indication information is used to indicate that the first logical channel is unreliable.

In a fourth aspect, a network device is provided, including:

a memory for storing a computer program;

a transceiver for transceiving data under control of the processor;

determining configuration parameters of a first device;

In a possible implementation manner, the processor is further configured to configure a survival time for a bearer corresponding to the first logical channel group; determining configuration parameters of the first device according to the survival time.

In another possible implementation manner, the transceiver is specifically configured to receive indication information reported by the terminal, where the indication information is used to indicate that the first logical channel is unreliable.

In a fifth aspect, a terminal device is provided, which includes:

the device comprises an execution unit, a timing unit and a timing unit, wherein the execution unit is used for starting first equipment for timing when the transmission of the uplink data fails; and when the timing of the first equipment meets the condition, executing data transmission operation.

In a sixth aspect, a network-side device is provided, including:

a determining unit, configured to determine configuration parameters of a first device;

a configuration unit, configured to configure the first device for a first logical channel group of a terminal, so that the first device for timing is started when the terminal fails to perform data transmission, where the first logical channel group includes two or more logical channels.

In a seventh aspect, there is provided a processor readable storage medium having stored thereon a computer program for causing a processor to perform the method of the first or second aspect.

The beneficial effect that technical scheme that this application provided brought is:

the terminal starts first equipment for timing when discovering that uplink data transmission fails, and executes data transmission operation when the timing of the first equipment meets the conditions, so that the reliability of service transmission is improved, and the requirement of quality of service (QoS) performance of service transmission is met.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments of the present application will be briefly described below.

Fig. 1 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

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

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

fig. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a network-side device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a network-side device according to an embodiment of the present application.

Detailed Description

Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present invention.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.

To make the objects, technical solutions and advantages of the present application more clear, the following detailed description of the embodiments of the present application will be made with reference to the accompanying drawings.

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

The terms referred to in this application will first be introduced and explained:

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

The network side device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells for providing services for a terminal. A base station may also be referred to as an access point, or a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network-side device may be configured to exchange the received air frame with an Internet Protocol (IP) packet as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network side device may also coordinate attribute management for the air interface. For example, the network side device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or a Code Division Multiple Access (CDMA), may also be a network side device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), may also be a evolved Node B (eNB) or an e-NodeB) in a Long Term Evolution (LTE) System, may also be a 5G Base Station (gNB) in a 5G network architecture (next generation System), may also be a Home evolved Node B (Home evolved Node B, HeNB), a relay Node (relay Node), a Home Base Station (pico), and the like, and is not limited in the embodiments of the present application. In some network structures, the network side device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, and the centralized unit and the distributed unit may be geographically separated.

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

In the data transmission process, when the data transmission has errors, the following steps are carried out: and when a data packet is lost, starting survival time, and if the subsequent data packet can be correctly transmitted in the survival time, considering that the service transmission is available. However, if the data packet is not transmitted correctly during the time-to-live until the time-to-live is exceeded and the data packet is still not transmitted correctly, the communication link between the source device and the target device is considered to be unavailable, for example: the call drop time of the call service is longer and exceeds the survival time. For example: a call service, which is dropped at a certain moment in the process of the call between two parties, if the communication can be recovered within a few seconds (within the survival time), and the two parties can continue the content of the call, the call service is considered to be reliable; if the communication is not recovered after 1 minute (the survival time is overtime), the two parties can not continue the content of the call, and the call service is considered to be unreliable.

For the above problems, the existing solutions are all implemented by focusing on the network side, and there is no specific solution for how the UE side operates.

That is to say, an effective solution that the reliability of the service is reduced and the reliability requirement of the service transmission cannot be met due to the timeout of the survivval time by the terminal device has not been introduced in 3 GPP. Namely: when the terminal finds that the uplink UL data packet loss exceeds N, the time for packet loss of UL data transmission is longer than the survival time (the survival time is overtime), the reliability of the service is reduced, and the reliability requirement of the service transmission cannot be met, and the reliability of the service transmission cannot be recovered.

In view of the above, the present application provides a data transmission method, an apparatus, an electronic device, and a computer-readable storage medium, which are intended to solve the above technical problems in the prior art.

Specifically, an embodiment of the present application provides a data transmission method: the terminal starts first equipment for timing when discovering that uplink data transmission fails, and executes data transmission operation when the timing of the first equipment meets the conditions, so that the reliability of service transmission is improved, and the requirement of quality of service (QoS) performance of service transmission is met.

The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.

An embodiment of the present application provides a data transmission method 10, as shown in fig. 1, where the method is executed by a terminal, and the method includes:

110. when the transmission of the uplink data fails, starting first equipment for timing;

120. and when the timing of the first equipment meets the condition, executing data transmission operation.

Specifically, in this embodiment, the first device includes: and the first timer or the first counter starts the first timer to time when the transmission of the uplink data fails, or starts the first counter and counts the data packets which are transmitted in the first logic channel and fail.

Wherein the timing satisfaction condition of the first device comprises: the timing of the first timer exceeds a preset time length; alternatively, the count of the first counter reaches a predetermined count value.

Optionally, the predetermined time duration or the predetermined count value is determined by the survival time corresponding to the first logical channel group. And the survival time is obtained by the network side equipment for the bearer configuration corresponding to the first logical channel group.

The preset time length of the first timer is configured by a network side device, the first timer is configured by the network side device for a first logical channel group of the terminal, and the first logical channel group comprises two or more logical channels; the first counter counts data packets that have failed to be transmitted in the first logical channel group, a predetermined count value of the first counter is configured by the network side device, and the first counter is configured by the network side device for the first logical channel group of the terminal.

That is to say, in this embodiment, a first timer or a first counter may be configured for a logical channel used by a terminal for transmitting uplink data through a network side device, and when the first timer is overtime or the first counter reaches a maximum count value, the terminal performs a data transmission operation, so as to solve a problem that when the terminal finds that current transmission cannot satisfy data transmission reliability, the reliability cannot be improved so as to satisfy quality of service (QoS) performance of service transmission.

It should be noted that, since the transmission time of each data packet in the data transmission process can be predicted, when the number of data packets that have failed to be transmitted in the first logical channel group reaches the maximum count value of the counter, it is described that the packet loss time of the uplink data transmission in the logical channel group is greater than the survival time, and the logical channel does not meet the reliability requirement, and it is necessary for the terminal to perform a data transmission operation to improve and timely recover the reliability of the service transmission.

In this embodiment, the predetermined duration or the predetermined count value is determined by the survival time corresponding to the first logical channel group, and the survival time is obtained by configuring, by the network side device, a bearer corresponding to the first logical channel group.

That is to say, when the network side device configures the length of the first timer or the maximum count value of the first counter for the first logical channel group, it needs to determine based on the time-to-live configured for the bearer corresponding to the first logical channel group, for example: the length of the first timer may be 1/n of the survival time, n represents the number of TCP retransmissions, and the maximum number of retransmissions of the data packet performed in the length of the first timer may be a ratio of the length of the first timer to the HARQ RTT delay.

It should be understood that, in this embodiment, the network side device may configure a first timer or a first counter for a group of logical channels of the terminal in advance, and configure a duration of the first timer or a maximum count value of the first counter based on the survival time of the bearer corresponding to the group of logical channels. And sending the configuration information to the terminal through an RRC reconfiguration message, and after receiving the message, the terminal acquires a first timer or a first counter configured for a first logical channel group of the terminal by the network side equipment, and the duration of the first timer or the maximum count value of the first counter. And starting a first timer or a first counter when the uplink data transmission of the terminal fails.

In some embodiments, the method 10 may further include:

130. and when the terminal successfully executes data transmission, triggering the first equipment to be closed.

Wherein, the situation that the terminal successfully performs the data transmission comprises at least one of the following:

the terminal receives a feedback message which indicates that the data packet is successfully transmitted and is sent by the network side equipment;

the terminal receives newly transmitted scheduling information aiming at the first logical channel group and sent by the network side equipment;

the configured authorized CGT timer configured by the terminal is overtime.

That is to say, in this embodiment, during the operation of the first timer or the first counter, if the terminal receives a feedback message sent by the network side device and indicating that the data packet is successfully transmitted, or new transmission scheduling information for the first logical channel group sent by the network side device, or a configuration authorization CGT timer configured for the terminal by the network side device times out, indicating that the data packet is successfully transmitted and the channel has recovered reliability, a subsequent data packet may be transmitted, at this time, the counting of the first timer/the first counter may be stopped and set to an initialization state, for example, the first timer is set to 0, or the counting of the first timer/the first counter is reset to zero.

In other embodiments, the case of the failure of uplink data transmission includes at least one of:

That is, in this embodiment, if the terminal is ready to perform uplink data transmission in the first logical channel group, the data packet is prioritized down, or a listen-before-talk LBT failure occurs; or, in the process that the terminal executes the uplink data transmission, the data packet is interrupted to be transmitted; or, after the uplink data transmission, when the terminal finds that the data packet needs to be retransmitted, for example: when the following conditions occur, it is determined that the data packet needs to be retransmitted, and retransmission scheduling information of the data packet sent by the network side device or a feedback message indicating that the data packet transmission fails is received, or the network side device sets an authorized retransmission timer CGRT for the terminal to be overtime, and when the terminal has one or more of the above conditions, the terminal can start a first timer or a first counter to perform timing operation.

Before uplink data transmission is performed in the unlicensed frequency band, the terminal needs to Listen Before Talk (LBT) to the unlicensed frequency band to detect whether the unlicensed frequency band is idle, and the terminal can communicate with the base station using the unlicensed frequency band only when the unlicensed frequency band is idle. Therefore, LBT fails, i.e. the unlicensed band is occupied, and no corresponding resource can be provided for data transmission.

The function of the timer CGRT is to open the CGRT when the terminal sends data, and to perform data retransmission when the CGRT times out.

In other embodiments, performing the data transfer operation includes at least one of:

In this embodiment, in the case that data transmission fails in the first logical channel, the priority of the first logical channel may be raised by: and selecting a second logical channel with higher priority than the first logical channel from the first logical channel group to ensure the successful transmission of data. That is, the first logical channel is a logical channel used for initial transmission of a packet whose transmission has failed, and the second logical channel having a higher priority than the first logical channel is used for retransmission of the packet.

That is, in this embodiment, when the transmission failure of the data packet results in unreliable service, the probability of successful transmission of the data packet may be increased by increasing the number of repetitions of retransmission of the data packet, or decreasing the MSC value of the data packet transmission, or transmitting the data packet in a duplicate manner (e.g., CA/DC transmission), or increasing the priority of the first logical channel, so as to recover the reliability of service transmission as soon as possible.

It should be noted that the number of repetitions (e.g., the number of repeption times), the MSC value, etc. may be configured by the network side device. In this embodiment, the network side device may transmit the configured information to the terminal in advance, and when the terminal meets the first condition, start the first timer or the first counter; when the timing of the first timer exceeds a preset time or the count of the first counter reaches a preset count value, performing data transmission by using the configuration; or, when the network side device learns that the timing of the first timer of the terminal exceeds the predetermined time or the count of the first counter reaches the predetermined count value, the configuration is issued to the terminal, so that the terminal performs data transmission by using the configuration.

Specifically, in this embodiment, when the first data packet is retransmitted with the preset number of times of repetition, the first data packet may be the first data to be sent by the terminal on the first logical channel after the time counted by the first timer exceeds a predetermined time period or the count of the first counter reaches a predetermined count value.

That is, the first data packet may be retransmitted on the first logical channel, and the number of times of transmission of the data packet in the retransmission process is at least 2 times, that is, at least 2 times of transmission are repeated at different times, so as to speed up recovery of reliability of the uplink service.

Wherein, if the data transmission operation is performed to retransmit the first data packet by the preset repetition number, the method includes:

and aiming at the transmission with different times, different hybrid automatic repeat request (HARQ) processes are adopted to transmit the first data packet, wherein the different HARQ processes are configured with corresponding redundancy version information.

For example: if the preset repetition number is 2, the HARQ process used for retransmitting the first data packet for the first time is different from the HARQ process used for retransmitting the first data packet for the second time, and the redundancy version information used for retransmitting the first data packet for the first time is different from the redundancy version information used for retransmitting the first data packet for the second time.

It should be noted that, when the first data packet is retransmitted, the content of each transmission is not necessarily the same, and corresponding redundancy version information is configured for different HARQ processes, so that the network side device can perform HARQ combining conveniently.

In another case, the data packet may be transmitted in a duplicate manner (e.g., CA/DC transmission), that is, the data packet may be transmitted to at least 2 nodes at the same time, so as to increase the transmission success probability of the data packet.

In this embodiment, the first packet for performing the data transfer operation includes any one of the following packets:

a data packet with a reduced priority;

transmitting the interrupted data packet;

data packets not transmitted due to LBT failure;

a newly transmitted data packet.

The newly transmitted data packet may be obtained from the multiplexing entity buffer, or may be obtained from the MSG3 (message 3) buffer.

That is to say, the data packet for performing data transmission may be a data packet with a reduced priority, or a data packet with interrupted transmission, or a data packet that is not transmitted due to LBT failure, or a data packet with failed transmission that is fed back by the network side device, or a data packet with successful transmission that is not received by the network side device after CGRT timeout.

For example: the MCS originally adopts a higher modulation and coding scheme, such as 16QAM, and has higher coding efficiency, and when the transmission of the data fails and time-out occurs, a lower order MCS, that is, a lower modulation and coding scheme, such as QPSK, may be adopted to retransmit the first data on the configured resources, thereby recovering the transmission reliability of the uplink service.

It should be noted that, after the lower-order MCS is adopted, the original time-frequency domain resource cannot carry the size of the data, so the network side reconfigures the size of the retransmission resource while configuring the MCS.

In some embodiments, if the data transmission operation is performed to retransmit the first data packet on the configured transmission resource in the first modulation and coding manner, the method 10 may further include:

140. and when the first data packet is successfully transmitted, transmitting a subsequent uplink data packet on the configured transmission resource in the first modulation coding mode.

That is, in this embodiment, after the reduced MSC is adopted to successfully transmit the data packet on the corresponding resource, the reduced MSC may be adopted to continue to transmit the subsequent data packet on the corresponding resource.

In still other embodiments, the method 10 further comprises:

150. and reporting indication information to the network side equipment, wherein the indication information is used for indicating that the first logic channel is unreliable.

Specifically, in this embodiment, after the first device for timing is started, the method 10 further includes:

160. starting a second device for timing;

then 150 may specifically include:

That is to say, in this embodiment, after the first timer or the first counter is started, a second timer or a second counter is also started, where the length of the second timer is greater than the length of the first timer, and a maximum count value of the second counter is greater than a maximum count value of the first counter, and when the second timer is overtime or the second counter reaches the maximum count value, the terminal may also report indication information to the network side device to indicate that the first logical channel does not satisfy the reliability, where the indication information may carry information that the second timer is overtime or the second counter reaches the maximum count value.

An embodiment of the present application further provides a data transmission method 20, as shown in fig. 2, where the method is executed by a network side device, and the method may include:

210. determining configuration parameters of a first device;

220. configuring the first device for a first logical channel group of a terminal so that the first device for timing is started when the terminal fails to perform data transmission, wherein the first logical channel group comprises two or more logical channels.

Specifically, in this embodiment, the configuration parameters of the first device may be configured to the terminal through an RRC reconfiguration message, for example: a predetermined duration of the first timer, or a predetermined count value of the first counter, is configured.

In some embodiments, step 210 may include:

211. configuring survival time for the bearer corresponding to the first logical channel group;

212. determining configuration parameters of the first device according to the survival time.

That is to say, in this embodiment, the network side device may configure the survival time for the bearer corresponding to the first logical channel group of the terminal, and determine, based on the survival time, a duration for configuring the first timer for the first logical channel group, or configure the maximum count value of the first counter for the first logical channel group.

In other embodiments, the method 20 may further include:

240. and receiving indication information reported by the terminal, wherein the indication information is used for indicating that the first logic channel is unreliable.

That is to say, in this embodiment, the network side device may receive the indication information, which is reported by the terminal and carries the information that the second timer is overtime or the second counter reaches the maximum count value, so as to know that the first logical channel group does not satisfy the reliability. The length of the second timer is greater than that of the first timer, and the maximum count value of the second counter is greater than that of the first counter.

The above describes a technical solution of a data transmission method provided in the embodiment of the present application from the perspective of a terminal and a network side device with reference to fig. 1 and fig. 2, and the following describes an implementation process of the data transmission method provided in the embodiment of the present application in detail with reference to fig. 3.

Fig. 3 is a diagram of an interaction process of data/signaling of a data transmission method 30 provided in the embodiment of the present application. The data transmission method 30 includes the steps of:

310. the network side device configures the length of a first timer to be a predetermined length to a first logical channel group of the terminal UE, or configures the maximum count value of a first counter to be a predetermined count value.

Specifically, in this embodiment, the network side device may configure the length of the first timer or the maximum count value of the first counter to the UE through an RRC reconfiguration message.

The length of the first timer or the maximum count value of the first counter is determined by the survival time configured by the network side device for the bearer corresponding to the first logical channel group.

320. And when the terminal meets at least one first condition, starting the first timer or the first counter.

Wherein the first condition is:

when the terminal is ready to execute uplink UL data transmission, the priority of a data packet is lowered;

That is, when the terminal has one or more of the above situations, the terminal may start the first timer or the first counter to perform the timing operation.

330. When the first timer is overtime or the count value of the first counter reaches the maximum count value, the terminal executes one or more of the following operations for data transmission:

increasing repetition times, such as the repetition times, wherein the repetition transmission times are configured in advance by a network side;

reducing MCS, and adjusting time domain/frequency domain expansion resources, wherein the resources and MCS are configured in advance by a network side;

automatic activation of repeat transmissions, such as CA/DC transmissions;

the logical channel priority is automatically raised.

Specifically, in this embodiment, when the first timer expires or the count value of the first counter reaches the maximum count value, the terminal retransmits the first data packet by the repetition number greater than or equal to 2, or retransmits the first data packet on the configured transmission resource by using the reduced MCS value.

In another embodiment, when the first timer expires or the count value of the first counter reaches the maximum count value, the terminal may perform UL data transmission using a CA/DC duplicate scheme. Wherein, the CA/DC duplication transmission architecture is configured in advance by the network side, and the UE performs duplication transmission on the data to be subsequently sent in the PDCP layer, and submits a packet of duplicate transmission to two carriers (CA duplication) or two nodes (DC duplication), for example: two base stations.

In another embodiment, when the first timer expires or the count value of the first counter reaches the maximum count value, the terminal may raise the priority of the first logical channel, for example: a second logical channel having priority higher than that of the first logical channel may be selected in the first logical channel group, and the first logical channel data is preferentially multiplexed when next data is generated. When data is transmitted, if the uplink authorization conflicts, the second logical channel data with higher priority is transmitted preferentially.

The first data packet for performing data transmission may include any one of the following data packets:

a data packet with a reduced priority;

transmitting the interrupted data packet;

data packets not transmitted due to LBT failure;

a newly transmitted data packet.

340. Stopping or zeroing the first timer/first counter when the terminal satisfies at least one of the following second conditions during operation of the first timer or the first counter.

Wherein the second condition comprises:

receiving a feedback message which is sent by the network side equipment and indicates that data transmission is successful;

the configuration of the terminal authorizes the CGT timer to time out.

350. When the second timer is overtime or the count value of the second counter reaches the maximum count value, the terminal reports indication information indicating that the second timer is overtime or the count value of the second counter reaches the maximum count value to the network side equipment.

360. And the network side equipment receives the indication information reported by the terminal.

In the above embodiment, the first timer or the first counter related to the survival time is set for the uplink service logical channel of the terminal, and when the uplink data transmission fails, the first timer or the first counter is started, and when the first timer is overtime or the first counter reaches the maximum count value, the data transmission operation is performed to improve and recover the reliability of the uplink service transmission, so as to meet the requirement of the service transmission quality of service QoS performance.

Based on the same inventive concept, an embodiment of the present application provides a terminal device, as shown in fig. 4, where the terminal device includes: a memory 401, a transceiver 402, and a processor 403, wherein,

a memory 401 for storing a computer program;

a transceiver 402 for transceiving data under the control of the processor 403;

a processor 403 for reading the computer program in the memory 401 and executing the following operations:

In some embodiments, the first device comprises: a first timer or a first counter, the timing of the first device satisfying a condition comprising:

the timing of the first timer exceeds a preset time length; or,

the count of the first counter reaches a predetermined count value.

In still other embodiments, the processor is further configured to trigger the first device to turn off when the terminal performs data transmission successfully.

Specifically, in this embodiment, the situation that the terminal successfully performs data transmission includes at least one of the following:

the terminal receives a feedback message which is sent by the network side equipment and indicates that the data packet is successfully transmitted;

the terminal receives new transmission scheduling information aiming at a first logic channel group and sent by the network side equipment;

the configuration of the terminal authorizes the CGT timer to time out.

In other embodiments, the predetermined duration or the predetermined count value is determined by an alive time corresponding to the first logical channel group, and the alive time is obtained by the network side device for a bearer configuration corresponding to the first logical channel.

after the UL data is transmitted, receiving retransmission scheduling information aiming at a data packet, which is sent by network side equipment;

Specifically, in this embodiment, the first packet for performing the data transfer operation includes any one of the following packets:

a data packet with a reduced priority;

transmitting the interrupted data packet;

data packets not transmitted due to LBT failure;

a newly transmitted data packet.

In other embodiments, if the data transmission operation is to retransmit a first data packet on the configured transmission resource in a first modulation and coding scheme, the transceiver 402 is further configured to transmit a subsequent uplink data packet on the configured transmission resource in the first modulation and coding scheme when the first data packet is successfully transmitted.

In other embodiments, the transceiver 402 is specifically configured to report indication information to a network side device, where the indication information is used to indicate that the first logical channel is unreliable.

Specifically, in this embodiment, after the first device for timing is started, the processor 403 is further configured to start a second device for timing;

the transceiver 402 is specifically configured to report the indication information to the network side device when the timing of the second device meets the condition.

For the content that is not described in detail in the terminal 40 provided in the embodiment of the present application, reference may be made to the data transmission method 10 provided in the foregoing embodiment, and the beneficial effects that the terminal 40 provided in the embodiment of the present application can achieve are the same as the data transmission method 10 provided in the foregoing embodiment, and are not described herein again.

It should be appreciated that in the above-described embodiments, the bus architecture in FIG. 4 may include any number of interconnected buses and bridges, with one or more processors represented by processor 403 and various circuits of memory represented by memory 401 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 402 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. For different user devices, the user interface 404 may also be an interface capable of interfacing with a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 403 is responsible for managing the bus architecture and general processing, and the memory 402 may store data used by the processor 403 in performing operations.

Alternatively, the processor 403 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

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

Based on the same inventive concept, an embodiment of the present application further provides a network-side device 50, as shown in fig. 5, where the network-side device 50 includes: a memory 501, a transceiver 502, and a processor 503, wherein,

a memory 501 for storing a computer program;

a transceiver 502 for transceiving data under the control of the processor 503;

a processor 503 for reading the computer program in the memory 501 and performing the following operations:

determining configuration parameters of a first device;

In an embodiment, the processor 503 is further configured to configure a survival time for a bearer corresponding to the first logical channel group; determining configuration parameters of the first device according to the survival time.

In another embodiment, the processor 503 is specifically configured to configure the configuration parameter of the first device to the terminal through an RRC reconfiguration message.

In another embodiment, the transceiver 502 is configured to receive indication information reported by the terminal, where the indication information is used to indicate that the first logical channel is unreliable.

For the content that is not described in detail in the network-side device 50 provided in the embodiment of the present application, reference may be made to the data transmission method 20 provided in the foregoing embodiment, and beneficial effects that the network-side device 50 provided in the embodiment of the present application can achieve are the same as the data transmission method 20 provided in the foregoing embodiment, and are not described herein again.

It should be appreciated that in the above-described embodiments, the bus architecture in FIG. 5 may include any number of interconnected buses and bridges, with one or more processors represented by processor 503 and various circuits of memory represented by memory 501 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 502 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 503 is responsible for managing the bus architecture and general processing, and the memory 501 may store data used by the processor 503 in performing operations.

The processor 503 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

Based on the same inventive concept, the embodiment of the present application further provides a terminal device, as shown in fig. 6, the terminal device 60 may include: execution unit 610.

An execution unit 610, configured to start a first device for timing when the uplink data transmission fails; and when the timing of the first equipment meets the condition, executing data transmission operation.

Specifically, in this embodiment, the first device includes: a first timer or a first counter, the timing of the first device satisfying a condition comprising:

the timing of the first timer exceeds a preset time length; or,

the count of the first counter reaches a predetermined count value.

In some embodiments, the executing unit 610 is further configured to trigger the first device to turn off when the data transmission performed by the terminal is successful.

the configuration of the terminal authorizes the CGT timer to time out.

Specifically, in this embodiment, the first data includes any one of the following first data packets:

a data packet with a reduced priority;

transmitting the interrupted data packet;

data packets not transmitted due to LBT failure;

a newly transmitted data packet.

In other embodiments, if the data transmission operation is to retransmit the first data packet on the configured transmission resource in the first modulation and coding manner, the terminal device 60 further includes: and a transmission unit 620.

The transmitting unit 620 is configured to transmit a subsequent uplink data packet on the configured transmission resource in the first modulation and coding manner when the first data packet is successfully transmitted.

In other embodiments, the transmission unit 620 is further configured to report indication information to a network side device, where the indication information is used to indicate that the first logical channel is unreliable.

Specifically, in this embodiment, after the first device for timing is started, the execution unit 610 is further configured to start a second device for timing;

the transmission unit 620 is specifically configured to report the indication information to the network side device when the timing of the second device meets the condition.

For the content that is not described in detail in the terminal 60 provided in the embodiment of the present application, reference may be made to the data transmission method 10 provided in the foregoing embodiment, and the beneficial effects that the terminal 60 provided in the embodiment of the present application can achieve are the same as the data transmission method 10 provided in the foregoing embodiment, and are not described herein again.

Based on the same inventive concept, the embodiment of the present application further provides a network side device, as shown in fig. 7, the terminal device 70 may include: a determination unit 710 and a configuration unit 720.

A determining unit 710, configured to determine configuration parameters of a first device;

a configuration unit 720, configured to configure the first device for a first logical channel group of a terminal, so that the first device for timing is started when the terminal fails to perform data transmission, where the first logical channel group includes two or more logical channels.

In an embodiment, the determining unit 710 is further configured to configure a survival time for a bearer corresponding to the first logical channel group; determining configuration parameters of the first device according to the survival time.

In another embodiment, the configuring unit 720 is specifically configured to configure the configuration parameters of the first device to the terminal through an RRC reconfiguration message.

In another embodiment, the ue further includes a receiving unit 730, configured to receive indication information reported by the terminal, where the indication information is used to indicate that the first logical channel is unreliable.

For the content that is not described in detail in the network-side device 70 provided in the embodiment of the present application, reference may be made to the data transmission method 20 provided in the foregoing embodiment, and beneficial effects that the network-side device 70 provided in the embodiment of the present application can achieve are the same as the data transmission method 20 provided in the foregoing embodiment, and are not described again here.

In addition, an embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program runs on a computer, the computer may execute the foregoing data transmission method 10 or corresponding content in the embodiment corresponding to the data transmission method 20. Compared with the prior art, the data transmission method provided by the embodiment of the application provides an effective solution implemented by the terminal device, aiming at the situation that the reliability of the service is reduced due to the timeout of the survival time and the reliability requirement of the service transmission cannot be met.

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

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solutions of the present application, which are essential or contributing to the prior art, or all or part of the technical solutions may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the methods described in 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.

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

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

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

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

The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A data transmission method, performed by a terminal, the method comprising:

2. The data transmission method according to claim 1, wherein the first device comprises: a first timer or a first counter, the timing of the first device satisfying a condition comprising:

the timing of the first timer exceeds a preset time length; or,

the count of the first counter reaches a predetermined count value.

3. The data transmission method according to claim 2, wherein the predetermined time period or the predetermined count value is determined by a time-to-live corresponding to the first logical channel group.

4. The data transmission method according to any one of claims 1 to 3, wherein the case of uplink data transmission failure comprises at least one of:

when preparing to execute uplink UL data transmission, the priority of a data packet is reduced;

when preparing to perform the UL data transmission, a Listen Before Talk (LBT) failure occurs;

in the process of executing the UL data transmission, the transmission of the data packet is interrupted;

5. The data transmission method according to any one of claims 1 to 3, wherein the performing of the data transmission operation comprises at least one of:

6. The data transmission method according to claim 5, wherein the first data packet comprises any one of the following data packets:

a data packet with a reduced priority;

transmitting the interrupted data packet;

data packets not transmitted due to LBT failure;

a newly transmitted data packet.

7. The data transmission method according to claim 5, wherein if the data transmission operation is performed to retransmit the first data packet on the configured transmission resource in the first modulation and coding manner, the method further comprises:

8. The data transmission method according to claim 2 or 3, wherein the predetermined duration of the first timer is configured by a network side device, the first timer is configured by the network side device for a first logical channel group of the terminal, and the first logical channel group includes two or more logical channels;

9. A method of data transmission according to any one of claims 1-3, wherein the method further comprises:

10. The data transmission method according to claim 9, wherein the case where the terminal performs the data transmission successfully comprises at least one of:

receiving a feedback message which is sent by network side equipment and indicates that the data packet is successfully transmitted;

the configuration of the terminal authorizes the CGT timer to time out.

11. A method of data transmission according to any one of claims 1-3, wherein the method further comprises:

12. The data transmission method according to claim 11, further comprising, after starting the first device for timing:

starting a second device for timing;

13. A data transmission method, performed by a network side device, the method comprising:

determining configuration parameters of a first device;

14. The data transmission method of claim 13, wherein the determining the configuration parameter of the first device comprises:

15. The data transmission method according to claim 13 or 14, wherein the configuring the first device for the first logical channel group of the terminal includes:

16. The data transmission method according to claim 13 or 14, further comprising:

17. A terminal device, comprising:

a memory for storing a computer program;

a transceiver for transceiving data under control of the processor;

18. The terminal device of claim 17,

the timing of the first timer exceeds a preset time length; or,

the count of the first counter reaches a predetermined count value.

19. The terminal device according to claim 17 or 18, wherein the processor is further configured to trigger the first device to turn off when the data transmission performed by the terminal is successful.

20. The terminal device according to claim 17 or 18, wherein the transceiver is specifically configured to report indication information to a network side device, where the indication information is used to indicate that the first logical channel is unreliable.

21. A network-side device, comprising:

a memory for storing a computer program;

a transceiver for transceiving data under control of the processor;

determining configuration parameters of a first device;

22. The network-side device of claim 21, wherein the processor is specifically configured to configure a time-to-live for a bearer corresponding to the first logical channel group; determining configuration parameters of the first device according to the survival time.

23. The network-side device of claim 21 or 22, wherein the transceiver is specifically configured to receive indication information reported by the terminal, where the indication information is used to indicate that the first logical channel is unreliable.

24. A terminal device, comprising:

25. A network-side device, comprising:

a determining unit, configured to determine configuration parameters of the first device;

a configuration unit, configured to configure the first device for a first logical channel group of a terminal, so that when the terminal fails to perform data transmission, the first device for timing is started, where the first logical channel group includes two or more logical channels.

26. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any one of claims 1-12 or 13-16.