CN108513727B - Method and device for establishing default data radio bearer - Google Patents

Method and device for establishing default data radio bearer Download PDF

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Publication number
CN108513727B
CN108513727B CN201780002244.5A CN201780002244A CN108513727B CN 108513727 B CN108513727 B CN 108513727B CN 201780002244 A CN201780002244 A CN 201780002244A CN 108513727 B CN108513727 B CN 108513727B
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drb
service
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target
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CN108513727A (en
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武亚娟
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H04W48/06—Access restriction performed under specific conditions based on traffic conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Abstract

The disclosure relates to a method and a device for establishing a default data radio bearer, and belongs to the field of wireless communication. The method comprises the following steps: receiving a network access request sent by a terminal; determining a target Data Radio Bearer (DRB) type meeting the transmission quality according to a preset selection strategy; and establishing a default DRB of the target DRB type. By adopting the method and the device, the quality of initial data transmission can be improved.

Description

Method and device for establishing default data radio bearer
Technical Field
The present disclosure relates to the field of wireless communications, and more particularly, to a method and apparatus for establishing a default data radio bearer.
Background
In the process of Data transmission, the core network may establish one or more PDU (protocol Data Unit) sessions for each terminal, and for each PDU session, the base station may establish one or more DRBs (Data Radio Bearer) for the terminal, so as to transmit a Data packet of the terminal. If a downlink data packet is sent to the terminal, the base station can establish a DRB and is used for transmitting the received downlink data packet when receiving the data packet to be sent to the terminal; if there is an uplink data packet sent from the terminal to the network through the base station, the base station cannot immediately know and establish a DRB for the data packet, and a default DRB is generally established by the base station when the PDU session is established, so that the uplink data packet can be transmitted by using the default DRB.
The types of DRB are mainly divided into two types: GBR (Guaranteed Bit Rate) type and non-GBR (non-Guaranteed Bit Rate) type. In the prior art, this default DRB is a non-GBR type bearer, and the non-GBR type DRB is used initially regardless of the QoS (Quality of Service) requirement of the traffic corresponding to the specific transmitted packet. After the base station receives the data packet based on the default DRB, the QCI (quality of service Identifier) parameter in the data packet is read, the actual QoS requirement of the corresponding service is obtained, and it is determined whether a new bearer needs to be established for the data packet of the service again.
In carrying out the present disclosure, the inventors found that at least the following problems exist:
the above-mentioned non-GBR type DRB has a low QoS class, and is generally a class 9 non-GBR type DRB, thereby resulting in a low quality of initial data transmission.
Disclosure of Invention
The present disclosure provides a method and an apparatus for establishing a default data radio bearer, which can solve the problem of low quality of initial data transmission. The technical scheme is as follows:
according to a first aspect of embodiments of the present disclosure, there is provided a method of establishing a default data radio bearer, the method including:
receiving a network access request sent by a terminal;
determining a target Data Radio Bearer (DRB) type meeting the transmission quality according to a preset selection strategy;
and establishing a default DRB of the target DRB type.
Optionally, the determining, according to a preset selection policy, a target DRB type that meets the transmission quality includes:
determining a preset target DRB type, wherein the target DRB type is a target Guaranteed Bit Rate (GBR) type.
Optionally, the target GBR type is the GBR type with the largest tolerable packet error/loss rate and the largest tolerable packet delay budget among all GBR types.
Optionally, the determining, according to a preset selection policy, a target DRB type that meets the transmission quality includes:
determining a preset target DRB type, wherein the target DRB type is a target non-guaranteed bit rate non-GBR type, and the target non-GBR type meets a preset QoS (quality of service) condition.
Optionally, the preset QoS condition includes that a QoS class corresponding to the target non-GBR type is greater than a first preset class threshold.
Optionally, the network access request carries a target service type;
the determining, according to a preset selection policy, a target DRB type that meets the transmission quality includes:
and determining a target DRB type corresponding to the target service type according to the preset corresponding relation between the service type and the DRB type.
Optionally, the correspondence between the service type and the DRB type includes:
a first DRB type corresponding to a first service type is a GBR type, wherein the first service type is a service type of which the service data volume in a preset historical time length is greater than a preset threshold value;
and the second DRB type corresponding to the second service type is a non-GBR type, wherein the second service type is a service type of which the service data volume in the preset historical time is not more than a preset threshold value.
Optionally, the determining, according to a preset correspondence between service types and DRB types, a target DRB type corresponding to the target service type includes:
and determining a target DRB type corresponding to the target service type and the current network resource occupation condition according to the preset corresponding relation among the service type, the network resource occupation condition and the DRB type.
Optionally, the correspondence between the service type, the network resource occupation condition, and the DRB type includes:
the third DRB type corresponding to the first service type and the network resource occupation condition being idle is a GBR type with the QoS grade being larger than a second preset grade threshold, wherein the first service type is a service type with the service data volume in preset historical time being larger than a preset threshold;
the fourth DRB type corresponding to the first service type and the network resource occupation condition being busy is a GBR type with the QoS grade not greater than a second preset grade threshold;
a fifth DRB type corresponding to the second service type and the network resource occupation condition being idle is a non-GBR type with the QoS grade being larger than a third preset grade threshold, wherein the second service type is a service type with the service data volume in a preset historical time length being not larger than the preset threshold;
and the sixth DRB type corresponding to the second service type and the network resource occupation situation as busy is a non-GBR type with the QoS grade not greater than a third preset grade threshold.
According to a second aspect of the embodiments of the present disclosure, there is provided an apparatus for establishing a default data radio bearer, the apparatus comprising:
the receiving module is used for receiving a network access request sent by a terminal;
a determining module, configured to determine, according to a preset selection policy, a target data radio bearer DRB type that meets the transmission quality;
and the establishing module is used for establishing the default DRB of the target DRB type.
Optionally, the determining module is configured to:
determining a preset target DRB type, wherein the target DRB type is a target Guaranteed Bit Rate (GBR) type.
Optionally, the target GBR type is the GBR type with the largest tolerable packet error/loss rate and the largest tolerable packet delay budget among all GBR types.
Optionally, the determining module is configured to:
determining a preset target DRB type, wherein the target DRB type is a target non-guaranteed bit rate non-GBR type, and the target non-GBR type meets a preset QoS (quality of service) condition.
Optionally, the preset QoS condition includes that a QoS class corresponding to the target non-GBR type is greater than a first preset class threshold.
Optionally, the network access request carries a target service type;
the determination module is to:
and determining a target DRB type corresponding to the target service type according to the preset corresponding relation between the service type and the DRB type.
Optionally, the correspondence between the service type and the DRB type includes:
a first DRB type corresponding to a first service type is a GBR type, wherein the first service type is a service type of which the service data volume in a preset historical time length is greater than a preset threshold value;
and the second DRB type corresponding to the second service type is a non-GBR type, wherein the second service type is a service type of which the service data volume in the preset historical time is not more than a preset threshold value.
Optionally, the determining module is configured to:
and determining a target DRB type corresponding to the target service type and the current network resource occupation condition according to the preset corresponding relation among the service type, the network resource occupation condition and the DRB type.
Optionally, the correspondence between the service type, the network resource occupation condition, and the DRB type includes:
the third DRB type corresponding to the first service type and the network resource occupation condition being idle is a GBR type with the QoS grade being larger than a second preset grade threshold, wherein the first service type is a service type with the service data volume in preset historical time being larger than a preset threshold;
the fourth DRB type corresponding to the first service type and the network resource occupation condition being busy is a GBR type with the QoS grade not greater than a second preset grade threshold;
a fifth DRB type corresponding to the second service type and the network resource occupation condition being idle is a non-GBR type with the QoS grade being larger than a third preset grade threshold, wherein the second service type is a service type with the service data volume in a preset historical time length being not larger than the preset threshold;
and the sixth DRB type corresponding to the second service type and the network resource occupation situation as busy is a non-GBR type with the QoS grade not greater than a third preset grade threshold.
According to a third aspect of the embodiments of the present disclosure, there is provided a base station, the base station comprising a processor and a memory, the memory having at least one instruction stored therein, the instruction being loaded and executed by the processor to implement the method for establishing a default data radio bearer according to the first aspect.
According to a fourth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium having at least one instruction stored therein, the instruction being loaded and executed by a processor to implement the method for establishing a default data radio bearer according to the first aspect.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in the embodiment of the disclosure, a base station receives a network access request sent by a terminal, determines a target Data Radio Bearer (DRB) type meeting transmission quality according to a preset selection strategy, and establishes a default DRB of the target DRB type. Thus, the default DRB can ensure better service quality and improve the quality of initial data transmission.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
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In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flow diagram illustrating a method of establishing a default DRB in accordance with an exemplary embodiment;
FIG. 2 is a diagram illustrating a scenario in which a default DRB is established, according to an example embodiment;
fig. 3 is a flow diagram illustrating a method of establishing a default DRB in accordance with an exemplary embodiment;
FIG. 4 is a diagram illustrating a scenario in which a default DRB is established, according to an example embodiment;
fig. 5 is a flow diagram illustrating a method of establishing a default DRB in accordance with an exemplary embodiment;
FIG. 6 is a diagram illustrating a scenario in which a default DRB is established, according to an example embodiment;
fig. 7 is a flowchart illustrating a method of establishing a default DRB in accordance with an exemplary embodiment;
FIG. 8 is a diagram illustrating a scenario in which a default DRB is established, according to an example embodiment;
fig. 9 is a schematic diagram illustrating an apparatus for establishing a default DRB in accordance with an exemplary embodiment;
fig. 10 is a schematic diagram illustrating a structure of a base station according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
An exemplary embodiment of the present disclosure provides a method of establishing a default data radio bearer, which may be implemented by a base station.
The base station may include a processor, memory, transceiver, etc. The processor, which may be a CPU (central processing Unit), may be configured to obtain a target DRB type satisfying transmission quality, and the like. The Memory may be a RAM (Random Access Memory), a Flash Memory, or the like, and may be configured to store received data, data required by a processing procedure, data generated in the processing procedure, or the like, such as a preset DRB type, a correspondence between a service type and a network resource occupation situation and a DRB type, or the like. The transceiver may be configured to perform data transmission with the terminal, for example, receive a network access request sent by the terminal.
As shown in fig. 1, the processing flow of the method may include the following steps:
in step 101, a network access request sent by a terminal is received.
In implementation, the terminal needs to access the network through the base station, or when receiving a paging message of the base station, the terminal may send a network access request to the base station. When the base station receives a network access request sent by the terminal, whether the terminal is allowed to access can be judged according to the current network state, if so, a connection establishment confirmation message can be sent to the terminal, wherein the connection establishment confirmation message carries corresponding configuration information. After receiving the connection establishment confirmation message, the terminal may perform configuration according to the configuration information therein, and may send an establishment completion message to the base station after the configuration is completed.
Then, the base station may send a secure channel setup message to the terminal, where the secure channel setup message carries a configuration message of the secure channel. After receiving the secure channel establishment message, the terminal may perform configuration according to the configuration message of the secure channel, and after completing the configuration, may send a secure channel establishment completion message to the base station.
In step 102, a target DRB type satisfying the transmission quality is determined according to a preset selection policy.
In implementation, after receiving the security tunnel establishment completion message sent by the terminal, the base station needs to establish a default DRB with higher transmission quality in order to ensure that the terminal obtains higher transmission quality at the initial stage of data transmission, and before this, needs to determine the type of the default DRB. For the DRB with higher transmission quality, this embodiment provides 3 selection strategies for selecting the DRB type. One of 3 preset selection strategies can be selected for practical use according to actual needs. The following details 3 selection strategies:
firstly, determining a preset target DRB type, wherein the target DRB type is a target GBR type.
The DRB of GBR type can guarantee the corresponding bit rate, and the default DRB is GBR type, which can guarantee the high speed and the high quality at the initial stage of data transmission. Therefore, the type of the default DRB may be preset as a GBR type, which may be a specific GBR type, or a GBR type randomly selected from all GBR types, which is not limited herein. Under the strategy, all terminals use the default DRB of the GBR type to transmit data packets no matter what network environment, so that the time for establishing connection with the base station is shortened, the data transmission quality is improved, and the application service quality initially shown to a user is improved.
Optionally, based on the existing GBR type, a GBR type may be newly added, where the GBR type has the largest tolerable Packet Error/loss Rate (Packet Error/Lost Rate) and the largest tolerable Packet Delay Budget (Packet Delay Budget) among all the GBR types.
That is, each QoS parameter index corresponding to the newly added GBR type is the minimum requirement of all GBR types, for example, the parameter index of Packet Error/Lost Rate is 10-2The parameter index of the Packet Delay Budget is 300ms, that is, the maximum tolerable Packet error/loss rate of the Packet corresponding to the GBR type is 10-2The tolerable packet delay budget is 300ms at most. The QCI priority (QCI priority) corresponding to the GBR type may be set to 5, or may be set to 6 so that the GBR type can be distinguished and compared with other GBR types, which is not limited herein.
However, in actual operation, there may not be a service data flow whose parameter indexes are consistent with the newly added GBR type, and when the data packets of the service data flow are mapped from the upper layer to the GBR type DRB, filtering failure may be caused when the data packets are filtered based on QoS filtering. Therefore, the present embodiment further provides a method for filtering and screening packets, where the method may be applied to a terminal or a network server and other devices that need to filter and screen packets based on QoS, and the specific processing procedure of the method is as follows: when filtering and screening the data packet based on the QoS, the terminal can obtain QCI parameters carried by the data packet, then compares various QoS parameter indexes corresponding to the QCI parameters with various QoS parameter indexes corresponding to the selected DRB, and when one QoS parameter index corresponding to the QCI parameter meets the QoS parameter index corresponding to the selected DRB, the data packet is judged to be successfully filtered. The successfully filtered data packet can be used as service data for subsequent operation. When the newly added DRB of GBR type is selected as the DRB for transmitting data, it can be ensured that the data packets corresponding to all GBR type services that have been defined at present can be transmitted by using the DRB of GBR type as a bearer when the data packets are initially transmitted. Therefore, the method avoids the condition that the corresponding service cannot be established and implemented due to the failure of data packet filtering, avoids the waste of network resources caused by repeated modification and DRB establishment due to the failure of data packet filtering, improves the service efficiency of the network resources, and shortens the time required for successfully establishing the service connection.
With the advent of 5G technology, subsequent wireless network technology will be developed continuously to support more applications and services, QCI in the prior art will increase continuously with the continuous richness of applications and services, and then the indexes of QoS parameters in the newly added GBR type DRB will change, but the above standard defining the DRB is not changed.
And secondly, determining a preset target DRB type, wherein the target DRB type is a target non-GBR type, and the target non-GBR type meets a preset QoS (quality of service) condition.
Under the condition of network resource shortage, the service corresponding to the non-GBR type DRB needs to be able to bear the requirement of reducing the rate, that is, fixed network resources do not need to be occupied, so that the non-GBR type DRB can be online for a long time to transmit data. In order to retain the advantages of the non-GBR type DRB and improve the quality of initial transmission data, a non-GBR type DRB satisfying a preset QoS condition may be used as a default DRB.
Optionally, the preset QoS condition may include that a QoS class corresponding to the non-GBR type is greater than a first preset class threshold. The preset QoS condition may also be that each QoS parameter index is greater than a corresponding preset parameter threshold, which is not limited herein. Thus, the QoS of the default DRB of non-GBR type can be improved as much as possible, and the quality of initial transmission data can be ensured.
And thirdly, determining a target DRB type corresponding to the target service type according to the preset corresponding relation between the service type and the DRB type.
In actual operation, some service types (such as services related to protocol files) do not need to guarantee the bit rate, and some service types (such as video services) need to guarantee the bit rate all the time, so that a flexible selection strategy is provided to adapt to the use requirements of wireless resources in different scenes, and the use efficiency of the wireless resources is improved. A certain subject, such as an operator, a network manager, or a service provider, capable of configuring and managing radio resources may establish a correspondence between a service type and a DRB type according to the requirements of various service types on the radio resources.
The network access request sent by the terminal may carry the target service type. When the base station receives the network access request, the target service type in the network access request can be acquired. Then, in the pre-established corresponding relation between the service type and the DRB type, a target DRB type corresponding to the target service type is searched to be used as the default DRB type.
The correspondence between the service type and the DRB type may be:
the first DRB type corresponding to the first service type is a GBR type;
and the second DRB type corresponding to the second service type is a non-GBR type.
The first service type is a service type of which the service data volume in the preset historical time is greater than a preset threshold, and the second service type is a service type of which the service data volume in the preset historical time is not greater than the preset threshold.
The base station can count the service data volume of each service type in a preset historical time (such as in the latest day), judge whether the service data volume corresponding to each service type is greater than a preset threshold value, and if so, set the GBR type as the DRB type corresponding to the service type when establishing the corresponding relation between the service type and the DRB type; and if not, setting the non-GBR type as the DRB type corresponding to the service type when the corresponding relation between the service type and the DRB type is established. Therefore, the DRB of the GBR type can be used for transmitting the data packet corresponding to the service type with larger service data volume, and the DRB of the non-GBR type can be used for transmitting the data packet corresponding to the service type with smaller service data volume, so that the use efficiency of network resources is improved.
Alternatively, the corresponding relationship between the service type and the DRB type may also be established according to the specific QoS requirement of the service type. The first service type may be a service with a higher QoS requirement, such as a video service, a voice service, and the like, and a certain bit rate needs to be guaranteed, so the GBR type may be set as a DRB type corresponding to the first service type; the second service type may be a service with a low QoS requirement, such as a service related to a protocol file, and does not need to guarantee a high bit rate, so the non-GBR type may be set as a DRB type corresponding to the second service type.
Optionally, in order to make the allocation of the network resource more accurate, a corresponding relationship between the service type, the network resource occupation condition, and the DRB type may be established, and the base station may determine, according to a preset corresponding relationship between the service type, the network resource occupation condition, and the DRB type, a target DRB type corresponding to the target service type and the current network resource occupation condition.
When the base station receives the network access request, the base station can detect the current network resource occupation situation, and then, the base station can detect the current network resource occupation situation according to the target service type in the network access request and the current network resource occupation situation. Then, in the pre-established corresponding relation among the service type, the network resource occupation condition and the DRB type, a target DRB type corresponding to the target service type and the current network resource occupation condition is searched to be used as the type of the default DRB.
The correspondence between the service type, the network resource occupation condition, and the DRB type may be:
the third DRB type corresponding to the first service type and the network resource occupation condition being idle is a GBR type with the QoS grade being larger than a second preset grade threshold;
the fourth DRB type corresponding to the first service type and the network resource occupation condition being busy is a GBR type with the QoS grade not greater than a second preset grade threshold;
the fifth DRB type corresponding to the second service type and the network resource occupation condition being idle is a non-GBR type with the QoS grade being greater than a third preset grade threshold;
and the sixth DRB type corresponding to the second service type and the network resource occupation situation as busy is a non-GBR type with the QoS grade not greater than a third preset grade threshold.
The division between the first service type and the second service type is already described in the above, and is not described herein again. The network resource occupation condition can be idle or busy, the DRB type is set according to the QoS grade under two network resource occupation conditions, specifically, a manager can preset a grade threshold corresponding to each service type, and when the corresponding relation between the service type, the network resource occupation condition and the DRB type is established, the DRB type larger than the grade threshold is set as the DRB type corresponding to the idle network resource occupation condition; and setting the DRB type not greater than the grade threshold as the DRB type corresponding to the busy network resource occupation condition. Here, the correspondence between the service type, the network resource occupation condition, and the DRB type may be regarded as refinement of the correspondence between the service type and the DRB type. Therefore, the DRB with better QoS can be used when the network resource occupation situation is idle, and the DRB with slightly poorer QoS can be used when the network resource occupation situation is busy, so that the accuracy of allocating the network resources is improved.
It should be noted that the correspondence between the service type and the DRB type and the correspondence between the service type, the network resource occupation condition and the DRB type provided in this embodiment are only used as an example, and different correspondence may be established based on the same concept, and are all within the protection scope of the present disclosure.
In step 103, a default DRB of the target DRB type is established.
After determining the lower target DRB type through the above procedure, the base station may add the configuration information of the target DRB type into the reconfiguration request, and then send the reconfiguration request to the terminal. After receiving the reconfiguration request, the terminal may perform configuration according to the configuration information of the target DRB type, and may send a reconfiguration complete message to the base station after the configuration is completed. To this end, as shown in fig. 2, the default DRB establishment is completed, and the terminal may perform subsequent processing based on the default DRB.
In the embodiment of the disclosure, a base station receives a network access request sent by a terminal, determines a target Data Radio Bearer (DRB) type meeting transmission quality according to a preset selection strategy, and establishes a default DRB of the target DRB type. Thus, the default DRB can ensure better service quality and improve the quality of initial data transmission.
Another exemplary embodiment of the present disclosure provides a method of establishing a default data radio bearer, which may be implemented by a base station.
The base station may include a processor, memory, transceiver, etc. The processor, which may be a CPU or the like, may be configured to obtain a target DRB type satisfying transmission quality, and the like. The memory may be RAM, Flash, or the like, and may be configured to store received data, data required by the processing process, data generated in the processing process, or the like, such as a preset DRB type, a correspondence between a service type and a network resource occupation situation and a DRB type, or the like. The transceiver may be configured to perform data transmission with the terminal, for example, receive a network access request sent by the terminal.
As shown in fig. 3, the processing flow of the method may include the following steps:
in step 301, a network access request sent by a terminal is received.
In implementation, the terminal needs to access the network through the base station, or when receiving a paging message of the base station, the terminal may send a network access request to the base station. When the base station receives a network access request sent by the terminal, whether the terminal is allowed to access can be judged according to the current network state, if so, a connection establishment confirmation message can be sent to the terminal, wherein the connection establishment confirmation message carries corresponding configuration information. After receiving the connection establishment confirmation message, the terminal may perform configuration according to the configuration information therein, and may send an establishment completion message to the base station after the configuration is completed.
Then, the base station may send a secure channel setup message to the terminal, where the secure channel setup message carries a configuration message of the secure channel. After receiving the secure channel establishment message, the terminal may perform configuration according to the configuration message of the secure channel, and after completing the configuration, may send a secure channel establishment completion message to the base station.
In step 302, a preset target DRB type is determined, wherein the target DRB type is a target GBR type.
In implementation, after receiving the security tunnel establishment completion message sent by the terminal, the base station needs to establish a default DRB with higher transmission quality in order to ensure that the terminal obtains higher transmission quality at the initial stage of data transmission, and before this, needs to determine the type of the default DRB.
The DRB of GBR type can guarantee the corresponding bit rate, and the default DRB is GBR type, which can guarantee the high speed and the high quality at the initial stage of data transmission. Therefore, the type of the default DRB may be preset as a GBR type, which may be a specific GBR type, or a GBR type randomly selected from all GBR types, which is not limited herein. Therefore, no matter in any network environment, all terminals use the default DRB of the GBR type to transmit data packets, the time for establishing connection with the base station is shortened, the data transmission quality is improved, and the application service quality initially shown to a user is improved.
Optionally, based on the existing GBR type, a GBR type may be newly added, where the GBR type has the largest tolerable Packet Error/loss Rate (Packet Error/Lost Rate) and the largest tolerable Packet Delay Budget (Packet Delay Budget) among all the GBR types.
That is, each QoS parameter index corresponding to the newly added GBR type is the minimum requirement of all GBR types, for example, the parameter index of Packet Error/Lost Rate is 10-2The parameter index of the Packet Delay Budget is 300ms, that is, the maximum tolerable Packet error/loss rate of the Packet corresponding to the GBR type is 10-2The tolerable packet delay budget is 300ms at most. The QCI priority (QCI priority) corresponding to the GBR type may be set to 5, or may be set to 6 so that the GBR type can be distinguished and compared with other GBR types, which is not limited herein.
However, in actual operation, there may not be a service data flow whose parameter indexes are consistent with the newly added GBR type, and when the data packets of the service data flow are mapped from the upper layer to the GBR type DRB, filtering failure may be caused when the data packets are filtered based on QoS filtering. Therefore, the present embodiment further provides a method for filtering and screening packets, where the method may be applied to a terminal or a network server and other devices that need to filter and screen packets based on QoS, and the specific processing procedure of the method is as follows: when filtering and screening the data packet based on the QoS, the terminal can obtain QCI parameters carried by the data packet, then compares various QoS parameter indexes corresponding to the QCI parameters with various QoS parameter indexes corresponding to the selected DRB, and when one QoS parameter index corresponding to the QCI parameter meets the QoS parameter index corresponding to the selected DRB, the data packet is judged to be successfully filtered. The successfully filtered data packet can be used as service data for subsequent operation. When the newly added DRB of GBR type is selected as the DRB for transmitting data, it can be ensured that the data packets corresponding to all GBR type services that have been defined at present can be transmitted by using the DRB of GBR type as a bearer when the data packets are initially transmitted. Therefore, the method avoids the condition that the corresponding service cannot be established and implemented due to the failure of data packet filtering, avoids the waste of network resources caused by repeated modification and DRB establishment due to the failure of data packet filtering, improves the service efficiency of the network resources, and shortens the time required for successfully establishing the service connection.
With the advent of 5G technology, subsequent wireless network technology will be developed continuously to support more applications and services, QCI in the prior art will increase continuously with the continuous richness of applications and services, and then the indexes of QoS parameters in the newly added GBR type DRB will change, but the above standard defining the DRB is not changed.
In step 303, a default DRB of the target DRB type is established.
After determining the lower target DRB type through the above procedure, the base station may add the configuration information of the target DRB type into the reconfiguration request, and then send the reconfiguration request to the terminal. After receiving the reconfiguration request, the terminal may perform configuration according to the configuration information of the target DRB type, and may send a reconfiguration complete message to the base station after the configuration is completed. To this end, as shown in fig. 4, the default DRB establishment is completed, and the terminal may perform subsequent processing based on the default DRB.
In the embodiment of the disclosure, a base station receives a network access request sent by a terminal, determines that a preset target DRB type is a target GBR type, and establishes a default DRB of the target DRB type. Therefore, no matter in any network environment, the default DRB types of all the terminals are GBR types, so that better service quality can be ensured, and the quality of initial data transmission can be improved.
Yet another exemplary embodiment of the present disclosure provides a method of establishing a default data radio bearer, which may be implemented by a base station.
The base station may include a processor, memory, transceiver, etc. The processor, which may be a CPU or the like, may be configured to obtain a target DRB type satisfying transmission quality, and the like. The memory may be RAM, Flash, or the like, and may be configured to store received data, data required by the processing process, data generated in the processing process, or the like, such as a preset DRB type, a correspondence between a service type and a network resource occupation situation and a DRB type, or the like. The transceiver may be configured to perform data transmission with the terminal, for example, receive a network access request sent by the terminal.
As shown in fig. 5, the processing flow of the method may include the following steps:
in step 501, a network access request sent by a terminal is received.
In implementation, the terminal needs to access the network through the base station, or when receiving a paging message of the base station, the terminal may send a network access request to the base station. When the base station receives a network access request sent by the terminal, whether the terminal is allowed to access can be judged according to the current network state, if so, a connection establishment confirmation message can be sent to the terminal, wherein the connection establishment confirmation message carries corresponding configuration information. After receiving the connection establishment confirmation message, the terminal may perform configuration according to the configuration information therein, and may send an establishment completion message to the base station after the configuration is completed.
Then, the base station may send a secure channel setup message to the terminal, where the secure channel setup message carries a configuration message of the secure channel. After receiving the secure channel establishment message, the terminal may perform configuration according to the configuration message of the secure channel, and after completing the configuration, may send a secure channel establishment completion message to the base station.
In step 502, a preset target DRB type is determined, wherein the target DRB type is a target non-GBR type, and the target non-GBR type satisfies a preset QoS condition.
In implementation, after receiving the security tunnel establishment completion message sent by the terminal, the base station needs to establish a default DRB with higher transmission quality in order to ensure that the terminal obtains higher transmission quality at the initial stage of data transmission, and before this, needs to determine the type of the default DRB.
The traffic corresponding to the non-GBR type DRB needs to be able to withstand the requirement of reducing the rate, i.e. it does not need to occupy fixed network resources, and therefore it can be online for a long time to transmit data. In order to retain the advantages of the non-GBR type DRB and improve the quality of initial transmission data, a non-GBR type DRB satisfying a preset QoS condition may be used as a default DRB.
Optionally, the preset QoS condition may include that a QoS class corresponding to the non-GBR type is greater than a first preset class threshold. The preset QoS condition may also be that each QoS parameter index is greater than a corresponding preset parameter threshold, which is not limited herein. Thus, the QoS of the non-GBR type DRB can be improved as much as possible, and the quality of initial transmission data can be ensured.
In step 503, a default DRB of the target DRB type is established.
After determining the lower target DRB type through the above procedure, the base station may add the configuration information of the target DRB type into the reconfiguration request, and then send the reconfiguration request to the terminal. After receiving the reconfiguration request, the terminal may perform configuration according to the configuration information of the target DRB type, and may send a reconfiguration complete message to the base station after the configuration is completed. To this end, as shown in fig. 6, the default DRB establishment is completed, and the terminal may perform subsequent processing based on the default DRB.
In the embodiment of the disclosure, a base station receives a network access request sent by a terminal, determines that a preset target DRB type is a target non-GBR type, and the target non-GBR type meets a preset QoS (quality of service) condition, and establishes a default DRB of the target DRB type. Therefore, no matter in any network environment, the types of the default DRBs of all the terminals are non-GBR types meeting the preset QoS condition, so that better service quality can be ensured, and the quality of initial data transmission can be improved.
Yet another exemplary embodiment of the present disclosure provides a method of establishing a default data radio bearer, which may be implemented by a base station.
The base station may include a processor, memory, transceiver, etc. The processor, which may be a CPU or the like, may be configured to obtain a target DRB type satisfying transmission quality, and the like. The memory may be RAM, Flash, or the like, and may be configured to store received data, data required by the processing process, data generated in the processing process, or the like, such as a preset DRB type, a correspondence between a service type and a network resource occupation situation and a DRB type, or the like. The transceiver may be configured to perform data transmission with the terminal, for example, receive a network access request sent by the terminal.
As shown in fig. 7, the processing flow of the method may include the following steps:
in step 701, a network access request transmitted by a terminal is received.
In implementation, the terminal needs to access the network through the base station, or when receiving a paging message of the base station, the terminal may send a network access request to the base station. When the base station receives a network access request sent by the terminal, whether the terminal is allowed to access can be judged according to the current network state, if so, a connection establishment confirmation message can be sent to the terminal, wherein the connection establishment confirmation message carries corresponding configuration information. After receiving the connection establishment confirmation message, the terminal may perform configuration according to the configuration information therein, and may send an establishment completion message to the base station after the configuration is completed.
Then, the base station may send a secure channel setup message to the terminal, where the secure channel setup message carries a configuration message of the secure channel. After receiving the secure channel establishment message, the terminal may perform configuration according to the configuration message of the secure channel, and after completing the configuration, may send a secure channel establishment completion message to the base station.
In step 702, a target DRB type corresponding to the target service type is determined according to a preset correspondence between the service type and the DRB type.
In implementation, after receiving the security tunnel establishment completion message sent by the terminal, the base station needs to establish a default DRB with higher transmission quality in order to ensure that the terminal obtains higher transmission quality at the initial stage of data transmission, and before this, needs to determine the type of the default DRB.
In actual operation, some service types (such as services related to protocol files) do not need to guarantee the bit rate, and some service types (such as video services) need to guarantee the bit rate all the time, so that a flexible selection strategy is provided to adapt to the use requirements of wireless resources in different scenes, and the use efficiency of the wireless resources is improved. A certain subject, such as an operator, a network manager, or a service provider, capable of configuring and managing radio resources may establish a correspondence between a service type and a DRB type according to the requirements of various service types on the radio resources.
The network access request sent by the terminal may carry the target service type. When the base station receives the network access request, the target service type in the network access request can be acquired. Then, in the pre-established corresponding relation between the service type and the DRB type, a target DRB type corresponding to the target service type is searched to be used as the default DRB type.
The correspondence between the service type and the DRB type may be:
the first DRB type corresponding to the first service type is a GBR type;
and the second DRB type corresponding to the second service type is a non-GBR type.
The first service type is a service type of which the service data volume in the preset historical time is greater than a preset threshold, and the second service type is a service type of which the service data volume in the preset historical time is not greater than the preset threshold.
The base station can count the service data volume of each service type in a preset historical time (such as in the latest day), judge whether the service data volume corresponding to each service type is greater than a preset threshold value, and if so, set the GBR type as the DRB type corresponding to the service type when establishing the corresponding relation between the service type and the DRB type; and if not, setting the non-GBR type as the DRB type corresponding to the service type when the corresponding relation between the service type and the DRB type is established. Therefore, the DRB of the GBR type can be used for transmitting the data packet corresponding to the service type with larger service data volume, and the DRB of the non-GBR type can be used for transmitting the data packet corresponding to the service type with smaller service data volume, so that the use efficiency of network resources is improved.
Alternatively, the corresponding relationship between the service type and the DRB type may also be established according to the specific QoS requirement of the service type. The first service type may be a service with a higher QoS requirement, such as a video service, a voice service, and the like, and a certain bit rate needs to be guaranteed, so the GBR type may be set as a DRB type corresponding to the first service type; the second service type may be a service with a lower QoS requirement, such as a service related to a protocol file, and the bit rate does not need to be guaranteed, and therefore, the non-GBR type may be set as a DRB type corresponding to the second service type.
Optionally, in order to make the allocation of the network resource more accurate, a corresponding relationship between the service type, the network resource occupation condition, and the DRB type may be established, and the base station may determine, according to a preset corresponding relationship between the service type, the network resource occupation condition, and the DRB type, a target DRB type corresponding to the target service type and the current network resource occupation condition.
When the base station receives the network access request, the base station can detect the current network resource occupation situation, and then, the base station can detect the current network resource occupation situation according to the target service type in the network access request and the current network resource occupation situation. Then, in the pre-established corresponding relation among the service type, the network resource occupation condition and the DRB type, a target DRB type corresponding to the target service type and the current network resource occupation condition is searched to be used as the type of the default DRB.
The correspondence between the service type, the network resource occupation condition, and the DRB type may be:
the third DRB type corresponding to the first service type and the network resource occupation condition being idle is a GBR type with the QoS grade being larger than a second preset grade threshold;
the fourth DRB type corresponding to the first service type and the network resource occupation condition being busy is a GBR type with the QoS grade not greater than a second preset grade threshold;
the fifth DRB type corresponding to the second service type and the network resource occupation condition being idle is a non-GBR type with the QoS grade being greater than a third preset grade threshold;
and the sixth DRB type corresponding to the second service type and the network resource occupation situation as busy is a non-GBR type with the QoS grade not greater than a third preset grade threshold.
The division between the first service type and the second service type is already described in the above, and is not described herein again. The network resource occupation condition can be idle or busy, the DRB type is set according to the QoS grade under two network resource occupation conditions, specifically, a manager can preset a grade threshold corresponding to each service type, and when the corresponding relation between the service type, the network resource occupation condition and the DRB type is established, the DRB type larger than the grade threshold is set as the DRB type corresponding to the idle network resource occupation condition; and setting the DRB type not greater than the grade threshold as the DRB type corresponding to the busy network resource occupation condition. Here, the correspondence between the service type, the network resource occupation condition, and the DRB type may be regarded as refinement of the correspondence between the service type and the DRB type. Therefore, the DRB with better QoS can be used when the network resource occupation situation is idle, and the DRB with slightly poorer QoS can be used when the network resource occupation situation is busy, so that the accuracy of allocating the network resources is improved.
It should be noted that the correspondence between the service type and the DRB type and the correspondence between the service type, the network resource occupation condition and the DRB type provided in this embodiment are only used as an example, and different correspondence may be established based on the same concept, and are all within the protection scope of the present disclosure.
In step 703, a default DRB of the target DRB type is established.
After determining the lower target DRB type through the above procedure, the base station may add the configuration information of the target DRB type into the reconfiguration request, and then send the reconfiguration request to the terminal. After receiving the reconfiguration request, the terminal may perform configuration according to the configuration information of the target DRB type, and may send a reconfiguration complete message to the base station after the configuration is completed. To this end, as shown in fig. 8, the default DRB establishment is completed, and the terminal may perform subsequent processing based on the default DRB.
In the embodiment of the disclosure, a base station receives a network access request sent by a terminal, determines a target DRB type corresponding to a target service type according to a preset correspondence between the service type and the DRB type, and establishes a default DRB of the target DRB type. Therefore, under different network environments, different service types can use corresponding default DRBs meeting the service quality, so that better service quality can be ensured, the quality of initial data transmission is improved, and the use efficiency of network resources is improved.
Yet another exemplary embodiment of the present disclosure provides an apparatus for establishing a default data radio bearer, where the apparatus may be a base station in the foregoing embodiments, as shown in fig. 9, the apparatus includes:
a receiving module 910, configured to receive a network access request sent by a terminal;
a determining module 920, configured to determine, according to a preset selection policy, a target data radio bearer DRB type that meets the transmission quality;
an establishing module 930 configured to establish a default DRB of the target DRB type.
Optionally, the determining module 920 is configured to:
determining a preset target DRB type, wherein the target DRB type is a target Guaranteed Bit Rate (GBR) type.
Optionally, the target GBR type is the GBR type with the largest tolerable packet error/loss rate and the largest tolerable packet delay budget among all GBR types.
Optionally, the determining module 920 is configured to:
determining a preset target DRB type, wherein the target DRB type is a target non-guaranteed bit rate non-GBR type, and the target non-GBR type meets a preset QoS (quality of service) condition.
Optionally, the preset QoS condition includes that a QoS class corresponding to the target non-GBR type is greater than a first preset class threshold.
Optionally, the network access request carries a target service type;
the determining module 920 is configured to:
and determining a target DRB type corresponding to the target service type according to the preset corresponding relation between the service type and the DRB type.
Optionally, the correspondence between the service type and the DRB type includes:
a first DRB type corresponding to a first service type is a GBR type, wherein the first service type is a service type of which the service data volume in a preset historical time length is greater than a preset threshold value;
and the second DRB type corresponding to the second service type is a non-GBR type, wherein the second service type is a service type of which the service data volume in the preset historical time is not more than a preset threshold value.
Optionally, the determining module 920 is configured to:
and determining a target DRB type corresponding to the target service type and the current network resource occupation condition according to the preset corresponding relation among the service type, the network resource occupation condition and the DRB type.
Optionally, the correspondence between the service type, the network resource occupation condition, and the DRB type includes:
the third DRB type corresponding to the first service type and the network resource occupation condition being idle is a GBR type with the QoS grade being larger than a second preset grade threshold, wherein the first service type is a service type with the service data volume in preset historical time being larger than a preset threshold;
the fourth DRB type corresponding to the first service type and the network resource occupation condition being busy is a GBR type with the QoS grade not greater than a second preset grade threshold;
a fifth DRB type corresponding to the second service type and the network resource occupation condition being idle is a non-GBR type with the QoS grade being larger than a third preset grade threshold, wherein the second service type is a service type with the service data volume in a preset historical time length being not larger than the preset threshold;
and the sixth DRB type corresponding to the second service type and the network resource occupation situation as busy is a non-GBR type with the QoS grade not greater than a third preset grade threshold.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
In the embodiment of the disclosure, a base station receives a network access request sent by a terminal, determines a target Data Radio Bearer (DRB) type meeting transmission quality according to a preset selection strategy, and establishes a default DRB of the target DRB type. Thus, the default DRB can ensure better service quality and improve the quality of initial data transmission.
It should be noted that: in the apparatus for establishing a default data radio bearer according to the foregoing embodiment, when establishing a default data radio bearer, only the division of the functional modules is described as an example, and in practical applications, the function distribution may be completed by different functional modules according to needs, that is, the internal structure of the base station is divided into different functional modules, so as to complete all or part of the functions described above. In addition, the apparatus for establishing a default data radio bearer and the method embodiment for establishing a default data radio bearer provided in the foregoing embodiments belong to the same concept, and specific implementation procedures thereof are detailed in the method embodiment and are not described herein again.
Yet another exemplary embodiment of the present disclosure shows a structural diagram of a base station.
Referring to fig. 10, base station 1000 includes a processing component 1022 that further includes one or more processors and memory resources, represented by memory 1032, for storing instructions, such as applications, that are executable by processing component 1022. The application programs stored in memory 1032 may include one or more modules that each correspond to a set of instructions. Further, processing component 1022 is configured to execute instructions to perform a method of upper flight control.
The base station 1000 may also include a power supply component 1026 configured to perform power management of the base station 1000, a wired or wireless network interface 1050 configured to connect the base station 1000 to a network, and an input/output (I/O) interface 1058.
Base station 1000 may include memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for establishing a default data radio bearer.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (18)

1. A method of establishing a default data radio bearer, the method comprising:
receiving a network access request sent by a terminal;
determining a target Data Radio Bearer (DRB) type meeting the transmission quality according to a preset selection strategy;
establishing a default DRB of the target DRB type;
the determining, according to a preset selection policy, a target DRB type that meets the transmission quality includes:
determining a preset target DRB type, wherein the target DRB type is a target Guaranteed Bit Rate (GBR) type.
2. The method of claim 1, wherein the target GBR type is the GBR type having the largest tolerable packet error/loss rate and the largest tolerable packet delay budget among all GBR types.
3. The method of claim 1, wherein the determining the target DRB type satisfying the transmission quality according to a preset selection policy further comprises:
determining a preset target DRB type, wherein the target DRB type is a target non-guaranteed bit rate non-GBR type, and the target non-GBR type meets a preset QoS (quality of service) condition.
4. The method of claim 3, wherein the predetermined QoS conditions comprise a QoS class corresponding to the target non-GBR type being greater than a first predetermined class threshold.
5. The method of claim 1, wherein the network access request carries a target service type;
the determining, according to a preset selection policy, a target DRB type that meets the transmission quality includes:
and determining a target DRB type corresponding to the target service type according to the preset corresponding relation between the service type and the DRB type.
6. The method of claim 5, wherein the correspondence between the service type and the DRB type comprises:
a first DRB type corresponding to a first service type is a GBR type, wherein the first service type is a service type of which the service data volume in a preset historical time length is greater than a preset threshold value;
and the second DRB type corresponding to the second service type is a non-GBR type, wherein the second service type is a service type of which the service data volume in the preset historical time is not more than a preset threshold value.
7. The method of claim 5, wherein the determining the target DRB type corresponding to the target service type according to a preset correspondence between service types and DRB types includes:
and determining a target DRB type corresponding to the target service type and the current network resource occupation condition according to the preset corresponding relation among the service type, the network resource occupation condition and the DRB type.
8. The method of claim 7, wherein the correspondence between the service type, the network resource occupation status, and the DRB type comprises:
the third DRB type corresponding to the first service type and the network resource occupation condition being idle is a GBR type with the QoS grade being larger than a second preset grade threshold, wherein the first service type is a service type with the service data volume in preset historical time being larger than a preset threshold;
the fourth DRB type corresponding to the first service type and the network resource occupation condition being busy is a GBR type with the QoS grade not greater than a second preset grade threshold;
a fifth DRB type corresponding to the second service type and the network resource occupation condition being idle is a non-GBR type with the QoS grade being larger than a third preset grade threshold, wherein the second service type is a service type with the service data volume in a preset historical time length being not larger than the preset threshold;
and the sixth DRB type corresponding to the second service type and the network resource occupation situation as busy is a non-GBR type with the QoS grade not greater than a third preset grade threshold.
9. An apparatus for establishing a default data radio bearer, the apparatus comprising:
the receiving module is used for receiving a network access request sent by a terminal;
a determining module, configured to determine, according to a preset selection policy, a target data radio bearer DRB type that meets the transmission quality;
the establishing module is used for establishing a default DRB of the target DRB type;
the determination module is to:
determining a preset target DRB type, wherein the target DRB type is a target Guaranteed Bit Rate (GBR) type.
10. The apparatus of claim 9 wherein the target GBR type is the GBR type having the largest tolerable packet error/loss rate and the largest tolerable packet delay budget among all GBR types.
11. The apparatus of claim 9, wherein the determining module is further configured to:
determining a preset target DRB type, wherein the target DRB type is a target non-guaranteed bit rate non-GBR type, and the target non-GBR type meets a preset QoS (quality of service) condition.
12. The apparatus of claim 11 wherein the predetermined QoS condition comprises a QoS class associated with the target non-GBR type being greater than a first predetermined class threshold.
13. The apparatus of claim 9, wherein the network access request carries a target service type;
the determination module is to:
and determining a target DRB type corresponding to the target service type according to the preset corresponding relation between the service type and the DRB type.
14. The apparatus of claim 13, wherein the correspondence between the service type and the DRB type comprises:
a first DRB type corresponding to a first service type is a GBR type, wherein the first service type is a service type of which the service data volume in a preset historical time length is greater than a preset threshold value;
and the second DRB type corresponding to the second service type is a non-GBR type, wherein the second service type is a service type of which the service data volume in the preset historical time is not more than a preset threshold value.
15. The apparatus of claim 13, wherein the determining module is configured to:
and determining a target DRB type corresponding to the target service type and the current network resource occupation condition according to the preset corresponding relation among the service type, the network resource occupation condition and the DRB type.
16. The apparatus of claim 15, wherein the correspondence between the service type, the network resource occupation status, and the DRB type comprises:
the third DRB type corresponding to the first service type and the network resource occupation condition being idle is a GBR type with the QoS grade being larger than a second preset grade threshold, wherein the first service type is a service type with the service data volume in preset historical time being larger than a preset threshold;
the fourth DRB type corresponding to the first service type and the network resource occupation condition being busy is a GBR type with the QoS grade not greater than a second preset grade threshold;
a fifth DRB type corresponding to the second service type and the network resource occupation condition being idle is a non-GBR type with the QoS grade being larger than a third preset grade threshold, wherein the second service type is a service type with the service data volume in a preset historical time length being not larger than the preset threshold;
and the sixth DRB type corresponding to the second service type and the network resource occupation situation as busy is a non-GBR type with the QoS grade not greater than a third preset grade threshold.
17. A base station, comprising a processor and a memory, wherein at least one instruction is stored in the memory, and wherein the instruction is loaded and executed by the processor to implement the method for establishing a default data radio bearer according to any one of claims 1 to 8.
18. A computer readable storage medium having stored therein at least one instruction which is loaded and executed by a processor to implement a method of establishing a default data radio bearer according to any one of claims 1 to 8.
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