CN107493590B - Data transmission method and device, base station and computer readable storage medium - Google Patents
Data transmission method and device, base station and computer readable storage medium Download PDFInfo
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- CN107493590B CN107493590B CN201710455506.5A CN201710455506A CN107493590B CN 107493590 B CN107493590 B CN 107493590B CN 201710455506 A CN201710455506 A CN 201710455506A CN 107493590 B CN107493590 B CN 107493590B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0205—Traffic management, e.g. flow control or congestion control at the air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
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Abstract
The invention discloses a data transmission method, which comprises the following steps: step A, when a base station triggers the mapping of the service quality flow and the data radio bearer, starting a preset timer; step B, continuously sending the service quality flow identification to the user equipment within a preset time period timed by the preset timer so as to complete mapping, and when the preset timer times out, executing step C; and step C, stopping sending the service quality flow identification. The invention also discloses a data transmission device, a base station and a computer readable storage medium. The invention can reduce the air interface resource consumption of 5G New Radio on the premise of realizing the service quality control based on the reflection mechanism.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a data transmission method and apparatus, a base station, and a computer-readable storage medium.
Background
The mobile communication technology has undergone a leap-type development from voice to data services, which has profoundly changed the life style of people and greatly promoted the rapid development of society and economy. The mobile internet and the internet of things serve as main driving force for the development of future mobile communication and provide a wide prospect for the fifth generation mobile communication (5G) technology.
The 3GPP (3rd Generation Partnership Project) proposes a top-level architecture of 5G, which is mainly characterized by a "service-based" modular design, and compared with the traditional "request-response" based network flow, the "service-based" design concept is expected to bring about a subversive design to the 5G system architecture. The wireless Access of 5G is called New Radio, NR for short, and is called New Radio Access Technology in 3GPP in its entirety. As the 5G standardization process continues to advance, quality of service control based on the reflection mechanism is introduced into 5G New Radio.
At RAN3#92 conference, it is agreed to name the 5G base station as a gNB, and for "G", the meaning is not explicitly explained. Referring to fig. 3, a New access stratum is introduced into 5G New Radio to implement quality of service control based on reflection mechanism, and the New access stratum is officially defined as an SDAP layer, and its main functions are as follows:
(1) and mapping the service quality control flow and the data radio bearer is realized.
(2) The qos flow id is added to the uplink/downlink pdu.
At the terminal side, the user equipment can extract the service quality flow identifier from the protocol data unit of the SDAP layer, and simultaneously extract the data radio bearer identifier from the protocol data unit of the lower layer, so as to complete the mapping of the service quality flow and the data radio bearer. Obviously, after the user equipment completes the mapping between the qos flow and the data radio bearer, the qos flow identifier carried in the SDAP layer protocol data unit only increases unnecessary consumption of air interface resources, which is not necessary for continuous existence.
Disclosure of Invention
The invention mainly aims to provide a data transmission method and device, a base station and a computer readable storage medium, aiming at reducing the air interface resource consumption of 5G New Radio on the premise of realizing the service quality control based on a reflection mechanism.
In order to achieve the above object, the present invention provides a data transmission method, which is applied to 5G New Radio, and the data transmission method includes:
step A, when a base station triggers the mapping of the service quality flow and the data radio bearer, starting a preset timer;
step B, continuously sending the service quality flow identification to the user equipment within a preset time period timed by the preset timer so as to complete mapping, and when the preset timer times out, executing step C;
and step C, stopping sending the service quality flow identification.
Further, the present invention also provides a data transmission device, which is applied to 5G New Radio, and the data transmission device includes:
the starting module is used for starting a preset timer when the base station triggers the mapping of the service quality flow and the data radio bearer;
a sending module, configured to continuously send the qos flow identifier to the ue within a preset time period timed by the preset timer to complete mapping; and the controller is further configured to stop sending the qos flow id when the preset timer expires.
Further, the present invention also provides a base station, which is applied to 5G New Radio, and the base station includes:
a memory storing a data transmission program;
a processor configured to execute the data transfer program to implement the steps of:
step A, when the mapping of the service quality flow and the data radio bearer is triggered, a preset timer is started;
step B, continuously sending the service quality flow identification to the user equipment within a preset time period timed by the preset timer so as to complete mapping, and when the preset timer times out, executing step C;
and step C, stopping sending the service quality flow identification.
Further, the present invention also provides a computer-readable storage medium having stored thereon a data transmission program which, when executed by a processor, implements the steps of:
step A, when the mapping of the service quality flow and the data radio bearer is triggered, a preset timer is started;
step B, continuously sending the service quality flow identification to the user equipment within a preset time period timed by the preset timer so as to complete mapping, and when the preset timer times out, executing step C;
and step C, stopping sending the service quality flow identification.
The invention starts the preset timer when the base station triggers the mapping of the service quality flow and the data radio bearer, and continuously sends the service quality flow identification to the user equipment during the timing period of the preset timer, so that the user equipment can complete the mapping of the service quality flow and the data radio bearer. It is easy to understand that, since the qos stream identifier is continuously transmitted within the timing period of the preset timer, it can be ensured that the ue receives the qos stream identifier, thereby avoiding a mapping failure of the ue due to packet loss, and meanwhile, after the preset timer expires, the qos stream identifier is not transmitted any more, thereby avoiding a continuous consumption of the qos stream identifier on the air interface resource, thereby reducing the air interface resource consumption of the 5G New Radio on the premise of implementing the qos control based on the reflection mechanism.
Drawings
FIG. 1 is a schematic diagram of an alternative hardware configuration of a base station of the present invention;
FIG. 2 is a flowchart illustrating a data transmission method according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram of a user plane protocol architecture of 5G New Radio;
fig. 4 is a schematic diagram illustrating a format of a control protocol data unit of a new SDAP layer defined in a third embodiment of the data transmission method of the present invention;
fig. 5 is a schematic flow chart of a base station sending a qos flow id in a third embodiment of the data transmission method according to the present invention;
fig. 6 is a block diagram of a data transmission device according to a first embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: when the base station triggers the mapping of the service quality flow and the data radio bearer, a preset timer is started, and the service quality flow identifier is continuously sent to the user equipment during the timing period of the preset timer, so that the user equipment can complete the mapping of the service quality flow and the data radio bearer. It is easy to understand that, since the qos stream identifier is continuously transmitted within the timing period of the preset timer, it can be ensured that the ue receives the qos stream identifier, thereby avoiding a mapping failure of the ue due to packet loss, and meanwhile, after the preset timer expires, the qos stream identifier is not transmitted any more, thereby avoiding a continuous consumption of the qos stream identifier on the air interface resource, thereby reducing the air interface resource consumption of the 5G New Radio on the premise of implementing the qos control based on the reflection mechanism.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a base station in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the base station may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface, and the like. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., a Wi-Fi interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the base station architecture shown in fig. 1 is not meant to be limiting, and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, in the first embodiment of the base station of the present invention, an operating system, a network communication module, a user interface module, and a data transmission program may be included in a memory 1005, which is a kind of computer storage medium.
In the base station shown in fig. 1, the network interface 1004 is mainly used for connecting to a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call the data transfer program stored in the memory 1005 to perform the following operations:
step A, when a base station triggers the mapping of the service quality flow and the data radio bearer, starting a preset timer;
step B, continuously sending the service quality flow identification to the user equipment within a preset time period timed by a preset timer so as to complete mapping, and when the preset timer times out, executing the step C;
and step C, stopping sending the service quality flow identification.
Further, during the execution of step B, the processor 1001 may be configured to call the data transfer program stored in the memory 1005, and further perform the following operations:
and C, recording the times of sending the service quality flow identification, judging whether the recorded sending times are more than or equal to the preset times, and if so, executing the step C.
Further, during the execution of step B, the processor 1001 may be configured to call the data transfer program stored in the memory 1005, and further perform the following operations:
and C, receiving a confirmation message returned by the user equipment after the service quality flow and the data radio bearer mapping are completed, and executing the step C when the confirmation message is received.
Further, the processor 1001 may be configured to invoke a data transfer program stored in the memory 1005, and further perform the following operations:
and receiving a confirmation message sent by the user equipment in at least one mode of a radio resource control message, a control protocol data unit of a packet data convergence protocol layer and a control protocol data unit or a data protocol data unit of an SDAP layer after the user equipment completes the mapping of the service quality flow and the data radio bearer.
Further, when the user equipment sends the aforementioned acknowledgement message carried in the data protocol data unit of the SDAP layer, the processor 1001 may be configured to invoke the data transmission program stored in the memory 1005, and further perform the following operations:
and receiving a data protocol data unit of the SDAP layer returned by the user equipment, and judging whether the received data protocol unit carries a zero-length effective load, wherein when the received data protocol unit carries the zero-length effective load, the confirmation message is determined to be received.
Further, the processor 1001 may be configured to invoke a data transfer program stored in the memory 1005, and further perform the following operations:
and in a preset time period timed by a preset timer, carrying the service quality flow identifier in a continuous or discontinuous SDAP layer protocol data unit, and sending the service quality flow identifier to the user equipment.
Further, the present invention also provides a data transmission method, which is applied to 5G New Radio, and referring to fig. 2, in a first embodiment of the data transmission method of the present invention, the data transmission method includes:
step S10, when triggering the mapping between the service quality flow and the data radio bearer, the base station starts a preset timer;
step S20, continuously sending the QoS flow identifier to the UE within the preset time period timed by the preset timer to complete mapping, and when the preset timer times out, executing step 30;
step S30, the transmission of the aforementioned quality of service flow identification is stopped.
It should be noted that the base station triggers mapping of the qos flow and the data radio bearer, including but not limited to:
(1) the base station initializes and sends the service quality flow;
(2) the base station updates/reconfigures the mapping of the service quality flow and the data radio bearer;
(3) and other conditions that trigger the base station to perform mapping of quality of service flows and data radio bearers.
In this embodiment, when triggering the mapping between the qos flow and the data radio bearer, the base station starts a preset timer to start timing, where the preset timer may be an internal timer of the base station or an external timer of the base station, and may be specifically selected by a person skilled in the art according to actual needs. Preferably, in this embodiment, the base station uses an internal timer as the preset timer.
In specific implementation, the preset timer is provided with a preset timing value T, and in a preset time period corresponding to the preset timing value T, the base station continuously sends the qos flow identifier to the user equipment, so that the user equipment completes the mapping of the established data radio bearer and the qos according to the qos flow identifier, thereby implementing the qos control based on the reflection mechanism. For example, the embodiment ensures that the user equipment can receive the service quality flow identifier as a constraint, and the preset timing value T corresponds to a preset time period of 5 seconds according to the crystal oscillator frequency of a preset timer.
When the preset timer reaches a preset timer value T, namely when the preset timer times out, the base station presumes that the user equipment has received the QoS flow identification, completes the mapping of the QoS flow and the data radio bearer, and stops sending the QoS flow identification to the user equipment.
For example, if the preset timer is set to 5 seconds, the base station will continue to send the qos flow id to the ue within 5 seconds of the start of the preset timer, and when the preset timer times more than 5 seconds, the base station estimates that the ue has received the qos flow id, and completes the mapping between the qos flow and the data radio bearer, and stops sending the qos flow id to the ue.
Further, in the present embodiment, step S20 includes:
and in a preset time period timed by a preset timer, carrying the service quality flow identifier in a continuous or discontinuous SDAP layer protocol data unit, and sending the service quality flow identifier to the user equipment.
As will be readily understood by those skilled in the art, the purpose of the base station sending the qos flow id to the ue is for the ue to complete mapping of the qos flow and the data radio bearer, and there is no timing requirement for the sent qos flow id, so in this embodiment, the base station may continuously carry the qos flow id in the downlink SDAP layer protocol data unit sent to the ue when sending the qos flow id, where the SDAP layer protocol data units carrying the qos flow id may be continuous or discontinuous. Wherein, when the QoS flow identification is sent discontinuously, the method is beneficial to prevent the QoS flow identification from being annihilated due to network fluctuation.
Further, for the two manners of sending the qos flow identifier, different preset timing values T may be set, for example, when the base station carries the qos flow identifier in each of the continuously sent SDAP layer protocol data units, the preset timing value T may be set to correspond to a timing duration of 5 seconds; for another example, when the base station randomly selects a part of the SDAP layer protocol data units to carry the qos flow identifier at intervals among the continuously transmitted SDAP layer protocol data units, the preset timing value T may be set to correspond to the timing duration of 10 seconds.
Further, when the base station sends the qos flow id, the qos flow id is specifically carried in a header of an SDAP layer protocol data unit and sent.
The data transmission method provided by the invention starts the preset timer when the base station triggers the mapping of the service quality flow and the data radio bearer, and continuously sends the service quality flow identifier to the user equipment during the timing period of the preset timer, so that the user equipment can complete the mapping of the service quality flow and the data radio bearer. It is easy to understand that, since the qos stream identifier is continuously transmitted within the timing period of the preset timer, it can be ensured that the ue receives the qos stream identifier, thereby avoiding a mapping failure of the ue due to packet loss, and meanwhile, after the preset timer expires, the qos stream identifier is not transmitted any more, thereby avoiding a continuous consumption of the qos stream identifier on the air interface resource, thereby reducing the air interface resource consumption of the 5G New Radio on the premise of implementing the qos control based on the reflection mechanism.
Further, based on the first embodiment, a second embodiment of the data transmission method of the present invention is proposed, and in this embodiment, during the execution of step S20, the following steps are also executed:
and recording the number of times of sending the qos flow id, and determining whether the recorded number of times of sending is greater than or equal to a preset number of times, if so, performing step 30.
It should be noted that, in order to further reduce the consumption of air interface resources, in this embodiment, on the basis of the foregoing first embodiment, the determination of the number of times of sending the qos flow identifier and the specific response to different determination results are added, which is only described below, and other descriptions may refer to the related description of the foregoing first embodiment, and are not repeated herein.
In the embodiment of the present invention, a preset number N is preset, which is used to limit the number of times for sending the qos flow identifier to the ue. Specifically, the base station triggers the mapping of the QoS flow and the data radio bearer, starts a preset timer and resets the Flag, then, within a preset time period timed by the preset timer, the base station synchronously adds 1 to the value of the Flag and judges whether the value of the Flag is greater than or equal to the preset number N or not in real time each time the base station sends the QoS flow identifier to the user equipment, if so, the number of times that the QoS flow identifier has been sent reaches the preset number N, the QoS flow identifier does not need to be sent continuously, and then, the sending of the QoS flow identifier to the user equipment is stopped. The preset number of times N is not specifically limited in the embodiments of the present invention, and may be set by a person skilled in the art according to actual needs, for example, the present embodiment is to ensure that the ue can receive the qos flow identifier as a constraint, and the preset number of times N is set to 10 (times).
For example, if the calculation time of the preset timer is 5 seconds and the preset number of times is 10, when the number of times of sending the qos flow identifier to the ue reaches 10 times after the base station starts the preset timer, even if the preset timer does not time out at this time, the base station does not send the qos flow identifier to the ue any more.
Further, based on the first embodiment, a third embodiment of the data transmission method of the present invention is proposed, and in this embodiment, during the execution of step S20, the following steps are also executed:
and receiving an acknowledgement message returned by the user equipment after the completion of the mapping of the quality of service flow and the data radio bearer, and when receiving the acknowledgement message, performing the step 30.
It should be noted that, in order to further reduce the consumption of the air interface resource, in this embodiment, a feedback operation of the user equipment acknowledgement message is added on the basis of the foregoing first embodiment, which is only described below, and other descriptions related to the foregoing first embodiment may be referred to, and are not described again here.
Based on the foregoing description of the embodiments, it is easily understood by those skilled in the art that the purpose of the base station sending the qos flow identifier to the ue is for the ue to complete the mapping between the qos flow and the data radio bearer, and it is obviously not necessary for the base station to continue sending the qos flow identifier to the ue after the ue completes the mapping between the qos flow and the data radio bearer. With this as a concept, in the embodiment of the present invention, an acknowledgement message on the terminal side is defined in advance, and the acknowledgement message is used to inform the base station to: "the user equipment has completed the mapping of the quality of service flow and the data radio bearer".
On the other hand, the base station receives the acknowledgement message returned by the user equipment after the user equipment completes the mapping of the QoS flow and the data radio bearer, and determines that the user equipment has completed the mapping of the QoS flow and the data radio bearer when the acknowledgement message is received, at this time, it is not necessary to continue to send the QoS flow identifier to the user equipment, and the sending operation of the QoS flow identifier is stopped.
Further, in this embodiment, the step of receiving the acknowledgement message returned by the ue after completing the qos flow and data radio bearer mapping includes:
and receiving a confirmation message sent by the user equipment in at least one mode of a radio resource control message, a control protocol data unit of a packet data convergence protocol layer and a control protocol data unit or a data protocol data unit of an SDAP layer after the user equipment completes the mapping of the service quality flow and the data radio bearer.
In this embodiment, when the user equipment sends the acknowledgment message to the base station, the acknowledgment message may be carried in a radio resource control message, a control protocol data unit of a packet data convergence protocol layer, and a control protocol data unit or a data protocol data unit of an SDAP layer and sent.
In specific implementation, the embodiment of the present invention defines a format of a control protocol data unit of a new SDAP layer, as shown in fig. 4, where an "a" field is used to indicate whether a user equipment completes mapping of a quality of service flow and a data radio bearer, and when the "a" field is filled with "1", it indicates that the user equipment has completed mapping of the quality of service flow and the data radio bearer.
The real-time embodiment of the invention also defines a special SDAP layer protocol data unit, which indicates that the user equipment has finished the mapping of the service quality flow and the data radio bearer when carrying the effective load with zero length. Correspondingly, when the user equipment sends the data protocol data unit carrying the acknowledgement message in the SDAP layer, the step of receiving the acknowledgement message returned by the user equipment comprises the following steps:
and receiving a data protocol data unit of the SDAP layer returned by the user equipment, and judging whether the received data protocol unit carries a zero-length effective load, wherein when the received data protocol unit carries the zero-length effective load, the confirmation message is determined to be received.
For example, referring to fig. 5, as an optional implementation manner, when triggering mapping between a qos flow and a data radio bearer, a base station sends a qos flow identifier carried in a downlink data protocol data unit of an SDAP layer to a user equipment; after receiving the QoS flow identification sent by the base station, the user equipment performs mapping of the QoS flow and the data radio bearer, and returns a confirmation message to the base station after completing the mapping of the QoS flow and the data radio bearer; after receiving the confirmation message returned by the user equipment, the base station determines that the user equipment has completed the mapping of the service quality flow and the data radio bearer, and does not carry the service quality flow identifier in the downlink data protocol data unit of the SDAP layer any more, that is, does not send the service quality flow identifier to the user equipment any more.
In addition, for the aforementioned other manners of sending the acknowledgement message, those skilled in the art may refer to the foregoing manners to implement, and carry the acknowledgement message in the corresponding protocol data unit, which is not described herein again.
Further, in the present embodiment, step S20 includes:
and carrying the service quality flow identification in the radio resource control signaling and sending the service quality flow identification to the user equipment.
In this embodiment, the base station may carry the qos flow identifier in the rrc signaling by way of rrc configuration and send the qos flow identifier to the ue, and the ue performs mapping between the qos flow and the data radio bearer.
On the other hand, after the user equipment analyzes the qos flow id from the rrc signaling sent by the base station and completes the mapping between the qos flow and the data radio bearer, the user equipment sends an rrc message carrying the acknowledgment message to the base station to inform the base station that the mapping between the qos flow and the data radio bearer has been completed. The format of the rrc message carrying the acknowledgment message is not specifically limited in the embodiments of the present invention, and may be set by a person skilled in the art according to actual needs.
Further, the present invention also provides a data transmission apparatus applied to 5G New Radio, in a first embodiment of the data transmission apparatus of the present invention, referring to fig. 6, corresponding to the first embodiment of the data transmission method, the data transmission apparatus includes:
a starting module 10, configured to start a preset timer when a base station triggers mapping between a quality of service flow and a data radio bearer;
a sending module 20, configured to continuously send the qos flow identifier to the ue within a preset time period timed by a preset timer to complete mapping; and the device is further configured to stop sending the qos flow id when the preset timer expires.
It should be noted that the base station triggers mapping of the qos flow and the data radio bearer, including but not limited to:
(4) the base station initializes and sends the service quality flow;
(5) the base station updates/reconfigures the mapping of the service quality flow and the data radio bearer;
(6) and other conditions that trigger the base station to perform mapping of quality of service flows and data radio bearers.
In this embodiment, the starting module 10 starts a preset timer to start timing when the base station triggers the mapping between the qos flow and the data radio bearer, where the preset timer may be an internal timer of the base station or an external timer of the base station, and may be specifically selected by a person skilled in the art according to actual needs. Preferably, in this embodiment, an intra-base station timer is used as the preset timer.
In specific implementation, the preset timer is provided with a preset timing value T, and in a preset time period corresponding to the preset timing value T, the sending module 20 continuously sends the qos flow identifier to the ue, so that the ue completes mapping between the established data radio bearer and the qos according to the qos flow identifier, thereby implementing qos control based on a reflection mechanism. For example, the embodiment ensures that the user equipment can receive the service quality flow identifier as a constraint, and the preset timing value T corresponds to a preset time period of 5 seconds according to the crystal oscillator frequency of a preset timer.
When the preset timer reaches the preset timer value T, that is, when the preset timer times out, the sending module 20 estimates that the ue has received the qos flow id, completes mapping between the qos flow and the data radio bearer, and stops sending the qos flow id to the ue.
For example, if the timer of the preset timer is 5 seconds, the sending module 20 will continuously send the qos flow id to the ue within 5 seconds of the preset timer starting timing, and when the preset timer exceeds 5 seconds, the sending module 20 estimates that the ue has received the qos flow id, completes mapping between the qos flow and the data radio bearer, and stops sending the qos flow id to the ue.
Further, in this embodiment, the sending module 20 is further configured to carry the qos flow identifier in a continuous or discontinuous SDAP layer protocol data unit within a preset time period counted by a preset timer, and send the service flow identifier to the user equipment.
As will be readily understood by those skilled in the art, the purpose of the sending module 20 sending the qos flow identifier to the ue is for the ue to complete mapping of the qos flow and the data radio bearer, and there is no timing requirement for the sent qos flow identifier, so in this embodiment, when sending the qos flow identifier, the sending module 20 may continuously carry the qos flow identifier in the downlink SDAP layer protocol data unit sent to the ue, where the SDAP layer protocol data units carrying the qos flow identifier may be continuous or discontinuous. Wherein, when the QoS flow identification is sent discontinuously, the method is beneficial to prevent the QoS flow identification from being annihilated due to network fluctuation.
Further, for the two manners of sending the qos flow identifier, different preset timing values T may be set, for example, when the sending module 20 carries the qos flow identifier in each continuously sent SDAP layer protocol data unit, the preset timing value T may be set to correspond to a timing duration of 5 seconds; for another example, when the sending module 20 randomly selects a part of the SDAP layer protocol data units to carry the qos flow identifier at intervals in the continuously sent SDAP layer protocol data units, the preset timing value T may be set to correspond to the timing duration of 10 seconds.
Further, when sending the qos flow id, the sending module 20 specifically carries the qos flow id in the message header of the SDAP layer protocol data unit for sending.
The data transmission device provided by the invention starts the preset timer when the base station triggers the mapping of the service quality flow and the data radio bearer, and continuously sends the service quality flow identifier to the user equipment during the timing period of the preset timer, so that the user equipment can complete the mapping of the service quality flow and the data radio bearer. It is easy to understand that, since the qos stream identifier is continuously transmitted within the timing period of the preset timer, it can be ensured that the ue receives the qos stream identifier, thereby avoiding a mapping failure of the ue due to packet loss, and meanwhile, after the preset timer expires, the qos stream identifier is not transmitted any more, thereby avoiding a continuous consumption of the qos stream identifier on the air interface resource, thereby reducing the air interface resource consumption of the 5G New Radio on the premise of implementing the qos control based on the reflection mechanism.
Further, based on the first embodiment, a second embodiment of the data transmission apparatus of the present invention is proposed, in this embodiment, the sending module 20 is further configured to record the number of times of sending the qos flow identifier during sending the qos flow identifier, and determine whether the recorded number of times of sending is greater than or equal to a preset number of times; the system is also used for stopping sending the QoS flow identification when the recorded sending times are more than or equal to the preset times;
alternatively, the sending module 20 is further configured to stop sending the qos flow identifier when an acknowledgement message returned by the ue after the qos flow and data radio bearer mapping is completed is received during sending the qos flow identifier.
It should be noted that, in order to further reduce the consumption of air interface resources, in this embodiment, on the basis of the foregoing first embodiment, the determination of the number of times of sending the qos flow identifier and the specific response to different determination results are added, which is only described below, and other descriptions may refer to the related description of the foregoing first embodiment, and are not repeated herein.
In the embodiment of the present invention, a preset number N is preset, which is used to limit the number of times for sending the qos flow identifier to the ue. Specifically, the sending module 20 triggers the base station to perform qos flow and data radio bearer mapping, starts a preset timer, and clears the Flag, then, within a preset time period timed by the preset timer, each time the qos flow identifier is sent to the user equipment, synchronously adds 1 to the value of the Flag, and judges whether the value of the Flag is greater than or equal to the preset number N, if so, the number of times the qos flow identifier has been sent reaches the preset number N, and does not need to continue sending the qos flow identifier, and at this time, the sending of the qos flow identifier to the user equipment is stopped. The preset number of times N is not specifically limited in the embodiments of the present invention, and may be set by a person skilled in the art according to actual needs, for example, the present embodiment is to ensure that the ue can receive the qos flow identifier as a constraint, and the preset number of times N is set to 10 (times).
For example, if the calculation time of the preset timer is 5 seconds and the preset number of times is 10, when the number of times of sending the qos flow identifier to the ue reaches 10 times after the base station starts the preset timer, even if the preset timer does not time out at this time, the sending module 20 does not send the qos flow identifier to the ue any more.
Based on the foregoing description of the embodiments, it is easily understood by those skilled in the art that the purpose of the sending module 20 to the user equipment for sending the qos flow identifier to the user equipment is for the user equipment to complete the mapping of the qos flow to the data radio bearer, and it is obviously not necessary for the sending module 20 to continue sending the qos flow identifier to the user equipment after the user equipment completes the mapping of the qos flow to the data radio bearer. With this as a concept, in the embodiment of the present invention, an acknowledgement message on the terminal side is further defined in advance, where the acknowledgement message is used to inform the base station to: "the user equipment has completed the mapping of the quality of service flow and the data radio bearer".
On the other hand, the sending module 20 receives the aforementioned confirmation message (specifically, received by the base station) returned by the user equipment after completing the mapping of the qos flow and the data radio bearer, and determines that the user equipment has completed the mapping of the qos flow and the data radio bearer when receiving the aforementioned confirmation message, at this time, it is not necessary to continue sending the aforementioned qos flow identifier to the user equipment, and stop the sending operation of the qos flow identifier.
Further, in this embodiment, the sending module 20 is further configured to receive an acknowledgement message sent by the ue in at least one of a radio resource control message, a control protocol data unit of a packet data convergence protocol layer, and a control protocol data unit or a data protocol data unit of an SDAP layer after the qos flow and data radio bearer mapping are completed.
In this embodiment, when the user equipment sends the acknowledgment message to the base station, the acknowledgment message may be carried in a radio resource control message, a control protocol data unit of a packet data convergence protocol layer, and a control protocol data unit or a data protocol data unit of an SDAP layer and sent.
In specific implementation, the embodiment of the present invention defines a format of a control protocol data unit of a new SDAP layer, as shown in fig. 4, where an "a" field is used to indicate whether a user equipment completes mapping of a quality of service flow and a data radio bearer, and when the "a" field is filled with "1", it indicates that the user equipment has completed mapping of the quality of service flow and the data radio bearer.
The real-time embodiment of the invention also defines a special SDAP layer protocol data unit, which indicates that the user equipment has finished the mapping of the service quality flow and the data radio bearer when carrying the effective load with zero length. Correspondingly, when the user equipment sends the data protocol data unit carrying the acknowledgement message in the SDAP layer, the sending module 20 is further configured to receive the data protocol data unit in the SDAP layer returned by the user equipment, and determine whether the received data protocol unit carries a zero-length payload, where when the received data protocol unit carries a zero-length payload, it is determined that the acknowledgement message is received.
For example, referring to fig. 5, as an optional implementation manner, when a base station (implementing a function through a data transmission device) triggers mapping between a qos flow and a data radio bearer, the base station carries the qos flow identifier in a downlink data protocol data unit of an SDAP layer and sends the qos flow identifier to a user equipment; after receiving the QoS flow identification sent by the base station, the user equipment performs mapping of the QoS flow and the data radio bearer, and returns a confirmation message to the base station after completing the mapping of the QoS flow and the data radio bearer; after receiving the confirmation message returned by the user equipment, the base station determines that the user equipment has completed the mapping of the service quality flow and the data radio bearer, and does not carry the service quality flow identifier in the downlink data protocol data unit of the SDAP layer any more, that is, does not send the service quality flow identifier to the user equipment any more.
In addition, for the aforementioned other manners of sending the acknowledgement message, those skilled in the art may refer to the foregoing manners to implement, and carry the acknowledgement message in the corresponding protocol data unit, which is not described herein again.
Further, in this embodiment, the sending module 20 is further configured to carry the qos flow identifier in the rrc signaling and send the qos flow identifier to the ue.
In this embodiment, the sending module 20 may send the qos flow identifier carried in the radio resource control signaling to the ue by way of radio resource control configuration, and the ue completes mapping between the qos flow and the data radio bearer.
On the other hand, after the ue parses the qos flow id from the rrc signaling sent by the sending module 20 and completes the mapping between the qos flow and the data radio bearer, the ue sends an rrc message carrying the acknowledgement message to the sending module 20, and informs the sending module 20 that the mapping between the qos flow and the data radio bearer has been completed. The format of the rrc message carrying the acknowledgment message is not specifically limited in the embodiments of the present invention, and may be set by a person skilled in the art according to actual needs.
Further, the present invention also provides a computer readable storage medium, which stores a data transmission program, and when executed by the processor 1001, the data transmission program implements the following operations:
step A, when a base station triggers the mapping of the service quality flow and the data radio bearer, starting a preset timer;
step B, continuously sending the service quality flow identification to the user equipment within a preset time period timed by a preset timer so as to complete mapping, and when the preset timer times out, executing the step C;
and step C, stopping sending the service quality flow identification.
Further, during the execution of step B, when the aforementioned data transmission program is executed by the processor 1001, the following operations are also implemented:
and C, recording the times of sending the service quality flow identification, judging whether the recorded sending times are more than or equal to the preset times, and if so, executing the step C.
Further, during the execution of step B, when the aforementioned data transmission program is executed by the processor 1001, the following operations are also implemented:
and C, receiving a confirmation message returned by the user equipment after the service quality flow and the data radio bearer mapping are completed, and executing the step C when the confirmation message is received.
Further, when the data transmission program is executed by the processor 1001, the following operations are also implemented:
and receiving a confirmation message sent by the user equipment in at least one mode of a radio resource control message, a control protocol data unit of a packet data convergence protocol layer and a control protocol data unit or a data protocol data unit of an SDAP layer after the user equipment completes the mapping of the service quality flow and the data radio bearer.
Further, when the user equipment sends the data protocol data unit carrying the acknowledgement message in the SDAP layer, the processor 1001 executes the data transmission program to implement the following operations:
and receiving a data protocol data unit of the SDAP layer returned by the user equipment, and judging whether the received data protocol unit carries a zero-length effective load, wherein when the received data protocol unit carries the zero-length effective load, the confirmation message is determined to be received.
Further, when the data transmission program is executed by the processor 1001, the following operations are also implemented:
and in a preset time period timed by a preset timer, carrying the service quality flow identifier in a continuous or discontinuous SDAP layer protocol data unit, and sending the service quality flow identifier to the user equipment.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on this understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for causing a base station to execute the methods according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. A data transmission method is applied to 5GNew Radio, and comprises the following steps:
step A, when a base station triggers the mapping of the service quality flow and the data radio bearer, starting a preset timer;
step B, continuously sending the service quality flow identification to the user equipment within a preset time period timed by the preset timer so as to complete mapping, and when the preset timer times out, executing step C;
step C, stopping sending the service quality flow identification;
after the step of continuously sending the qos flow id to the ue within the preset time period timed by the preset timer to complete mapping, the method includes:
receiving a confirmation message sent by the user equipment in at least one mode of a radio resource control message, a control protocol data unit of a packet data convergence protocol layer and a control protocol data unit or a data protocol data unit of an SDAP layer after the user equipment completes the mapping of the service quality flow and the data radio bearer;
when the user equipment sends the data protocol data unit carrying the confirmation message in the SDAP layer, the step of receiving the confirmation message returned by the user equipment comprises the following steps:
receiving a data protocol data unit of an SDAP layer returned by the user equipment, and judging whether the data protocol data unit carries a zero-length effective load, wherein when the data protocol data unit carries the zero-length effective load, the confirmation message is determined to be received;
before the step of continuously sending the qos flow id to the ue within the preset time period timed by the preset timer to complete mapping, the method includes:
when the data protocol data units of the SDAP layer which are continuously sent carry the service quality flow identification, acquiring a first preset time period of the preset timer;
and in the continuously sent data protocol data units of the SDAP layer, when the data protocol data units of part of the SDAP layer are randomly selected to carry the service quality flow identification at intervals, acquiring a second preset time period of the preset timer, wherein the first preset time period is less than the second preset time period.
2. The data transmission method according to claim 1, characterized in that during the execution of said step B, the following steps are also executed:
and C, recording the times of sending the service quality flow identification, judging whether the recorded sending times are more than or equal to the preset times, and if so, executing the step C.
3. The data transmission method according to claim 1, characterized in that during the execution of said step B, the following steps are also executed:
and C, receiving a confirmation message returned by the user equipment after the user equipment completes the service quality flow and data radio bearer mapping, and executing the step C when receiving the confirmation message.
4. The data transmission method according to any of claims 1-3, wherein the continuously sending the quality of service flow identification to the user equipment comprises:
and carrying the service quality flow identification in a continuous or discontinuous SDAP layer protocol data unit, and sending the service quality flow identification to the user equipment.
5. A data transmission apparatus, applied to 5G New Radio, the data transmission apparatus comprising:
the starting module is used for starting a preset timer when the base station triggers the mapping of the service quality flow and the data radio bearer;
a sending module, configured to continuously send the qos flow identifier to the ue within a preset time period timed by the preset timer to complete mapping; the system is further configured to stop sending the qos flow identifier when the preset timer expires;
after the step of continuously sending the qos flow id to the ue within the preset time period timed by the preset timer to complete mapping, the method includes:
receiving a confirmation message sent by the user equipment in at least one mode of a radio resource control message, a control protocol data unit of a packet data convergence protocol layer and a control protocol data unit or a data protocol data unit of an SDAP layer after the user equipment completes the mapping of the service quality flow and the data radio bearer;
when the user equipment sends the data protocol data unit carrying the confirmation message in the SDAP layer, the step of receiving the confirmation message returned by the user equipment comprises the following steps:
receiving a data protocol data unit of an SDAP layer returned by the user equipment, and judging whether the data protocol data unit carries a zero-length effective load, wherein when the data protocol data unit carries the zero-length effective load, the confirmation message is determined to be received;
before the step of continuously sending the qos flow id to the ue within the preset time period timed by the preset timer to complete mapping, the method includes:
when the data protocol data units of the SDAP layer which are continuously sent carry the service quality flow identification, acquiring a first preset time period of the preset timer;
and in the continuously sent data protocol data units of the SDAP layer, when the data protocol data units of part of the SDAP layer are randomly selected to carry the service quality flow identification at intervals, acquiring a second preset time period of the preset timer, wherein the first preset time period is less than the second preset time period.
6. The data transmission apparatus according to claim 5, wherein the sending module is further configured to record the number of times of sending the qos flow id during sending the qos flow id, and determine whether the recorded number of times of sending is greater than or equal to a preset number of times; the system is also used for stopping sending the QoS flow identification when the recorded sending times are more than or equal to the preset times;
or, the sending module is further configured to stop sending the qos flow identifier during sending the qos flow identifier and when receiving an acknowledgment message returned by the ue after completing mapping of the qos flow and the data radio bearer.
7. A base station, for application to 5GNew Radio, the base station comprising:
a memory storing a data transmission program;
a processor configured to execute the data transfer program to implement the steps of:
step A, when a base station triggers the mapping of the service quality flow and the data radio bearer, starting a preset timer;
step B, continuously sending the service quality flow identification to the user equipment within a preset time period timed by a preset timer so as to complete mapping, and when the preset timer times out, executing step C;
step C, stopping sending the service quality flow identification;
after the step of continuously sending the qos flow id to the ue within the preset time period timed by the preset timer to complete mapping, the method includes:
receiving a confirmation message sent by the user equipment in at least one mode of a radio resource control message, a control protocol data unit of a packet data convergence protocol layer and a control protocol data unit or a data protocol data unit of an SDAP layer after the user equipment completes the mapping of the service quality flow and the data radio bearer;
when the user equipment sends the data protocol data unit carrying the confirmation message in the SDAP layer, the step of receiving the confirmation message returned by the user equipment comprises the following steps:
receiving a data protocol data unit of an SDAP layer returned by the user equipment, and judging whether the data protocol data unit carries a zero-length effective load, wherein when the data protocol data unit carries the zero-length effective load, the confirmation message is determined to be received;
before the step of continuously sending the qos flow id to the ue within the preset time period timed by the preset timer to complete mapping, the method includes:
when the data protocol data units of the SDAP layer which are continuously sent carry the service quality flow identification, acquiring a first preset time period of the preset timer;
and in the continuously sent data protocol data units of the SDAP layer, when the data protocol data units of part of the SDAP layer are randomly selected to carry the service quality flow identification at intervals, acquiring a second preset time period of the preset timer, wherein the first preset time period is less than the second preset time period.
8. A computer-readable storage medium, having a data transfer program stored thereon, which when executed by a processor, performs the steps of:
step A, when a base station triggers the mapping of the service quality flow and the data radio bearer, starting a preset timer;
step B, continuously sending the service quality flow identification to the user equipment within a preset time period timed by the preset timer so as to complete mapping, and when the preset timer times out, executing step C;
step C, stopping sending the service quality flow identification;
after the step of continuously sending the qos flow id to the ue within the preset time period timed by the preset timer to complete mapping, the method includes:
receiving a confirmation message sent by the user equipment in at least one mode of a radio resource control message, a control protocol data unit of a packet data convergence protocol layer and a control protocol data unit or a data protocol data unit of an SDAP layer after the user equipment completes the mapping of the service quality flow and the data radio bearer;
when the user equipment sends the data protocol data unit carrying the confirmation message in the SDAP layer, the step of receiving the confirmation message returned by the user equipment comprises the following steps:
receiving a data protocol data unit of an SDAP layer returned by the user equipment, and judging whether the data protocol data unit carries a zero-length effective load, wherein when the data protocol data unit carries the zero-length effective load, the confirmation message is determined to be received;
before the step of continuously sending the qos flow id to the ue within the preset time period timed by the preset timer to complete mapping, the method includes:
when the data protocol data units of the SDAP layer which are continuously sent carry the service quality flow identification, acquiring a first preset time period of the preset timer;
and in the continuously sent data protocol data units of the SDAP layer, when the data protocol data units of part of the SDAP layer are randomly selected to carry the service quality flow identification at intervals, acquiring a second preset time period of the preset timer, wherein the first preset time period is less than the second preset time period.
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| WO2019119367A1 (en) * | 2017-12-21 | 2019-06-27 | 北京小米移动软件有限公司 | Identification allocation method and device, base station and user equipment |
| US11310689B2 (en) | 2018-02-08 | 2022-04-19 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for dynamically indicating QFI and user equipment |
| SG11202006598SA (en) * | 2018-02-13 | 2020-08-28 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Method and apparatus for remapping qos flow, and computer storage medium |
| CN110366209B (en) * | 2018-04-09 | 2021-12-03 | 华为技术有限公司 | Communication method and device |
| US20190349805A1 (en) * | 2018-05-11 | 2019-11-14 | Mediatek Inc. | User equipments and methods for handling an update on quality of service (qos) flow to data radio bearer (drb) mapping |
| CN110636544B (en) * | 2018-06-22 | 2022-09-23 | 华为技术有限公司 | Data transmission method and device |
| CN110691370B (en) * | 2018-07-06 | 2021-02-09 | 华为技术有限公司 | Data transmission method, device and system |
| CN109041260A (en) * | 2018-07-26 | 2018-12-18 | 智慧海派科技有限公司 | The corresponding method and system of 5G service quality stream |
| CN110536476B (en) * | 2018-08-09 | 2023-03-28 | 中兴通讯股份有限公司 | DRB establishment method, device, system, auxiliary node and main node |
| CN110972337B (en) * | 2018-09-29 | 2021-09-14 | 中国移动通信有限公司研究院 | Data transmission method, device and system, SDAP entity and storage medium |
| CN111163017B (en) * | 2019-12-30 | 2023-10-24 | 京信网络系统股份有限公司 | Data transmission method, device, base station equipment and computer readable storage medium |
| CN115865811A (en) * | 2021-09-24 | 2023-03-28 | 华为技术有限公司 | Communication method and device |
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