CN106572479B - Selection method, triggering method, device and base station of wireless data bearer - Google Patents
Selection method, triggering method, device and base station of wireless data bearer Download PDFInfo
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- CN106572479B CN106572479B CN201510651388.6A CN201510651388A CN106572479B CN 106572479 B CN106572479 B CN 106572479B CN 201510651388 A CN201510651388 A CN 201510651388A CN 106572479 B CN106572479 B CN 106572479B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W24/02—Arrangements for optimising operational condition
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
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- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
Abstract
The invention provides a selection method, a triggering method, a device and a base station of a wireless data bearer, relates to the field of wireless communication, and aims to solve the problem that an effective dual-connection function starting scheme is lacked in the prior art; the method for selecting the wireless data bearer comprises the following steps: detecting that any one wireless data bearer in a first wireless data bearer set of a terminal in a connection state with a first base station changes, and acquiring a judgment condition; and selecting at least one wireless data bearer which establishes connection with both the first base station and the second base station from the first wireless data bearer set according to the judgment condition. Through the change of the wireless data bearing, a proper wireless data bearing set is selected, and the wireless bearing for carrying out double connection can be flexibly configured according to the judgment condition.
Description
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a method for selecting a radio data bearer, a method for triggering the radio data bearer, an apparatus for triggering the radio data bearer, and a base station.
Background
The downlink dual connectivity function in the prior art is the function of 3GPP R12(3rd Generation Partnership project release12, third Generation Partnership project release 12). The function realizes that two eNBs (evolved Node Bs) simultaneously transmit downlink Data to the same UE, and the load bearing separation is performed on a PDCP (Packet Data convergence protocol) layer or an SGW (Serving GateWay) side. The eNB where the control plane is located is called MeNB (Master eNB, Master base station), and all cells under the MeNB serving the UE are called MCG (Master Cell Group); accordingly, only the eNB where the user plane is located is referred to as an SeNB (Secondary base station), and all cells serving the UE under the SeNB are referred to as SCGs (Secondary Cell Group). In the MCG, if a CA (Carrier aggregation) function is activated, a primary cell is referred to as a PCell and a secondary cell is referred to as an SCell; when the CA function is activated in the SCG, the primary cell is referred to as a PSCell and the secondary cell is referred to as an SCell. According to the difference of the data bearer separation node, when the data bearer is separated at the PDCP layer of the MeNB, the bearer is called a separation bearer (split bearer); when the Data Bearer is separated at the SGW node, the Bearer controlled by the MeNB is called MCG DRB (Data Rad1 Bearer); the SeNB controlled bearer is called SCG DRB.
However, the existing 3GPP specifications only define the procedures of establishment, update, release and conversion of dual connectivity radio bearers, and an effective dual connectivity can be determined according to the selection of the dual connectivity bearers, but there is no scheme how to effectively open the dual connectivity function in the prior art.
Disclosure of Invention
Embodiments of the present invention provide a method for selecting a radio data bearer, a method for triggering the radio data bearer, an apparatus for triggering the radio data bearer, and a base station, so as to solve the problem that a scheme for effectively starting a dual connectivity function is lacking in the prior art.
In order to achieve the above object, a method for selecting a radio data bearer provided in an embodiment of the present invention includes:
detecting that any one wireless data bearer in a first wireless data bearer set of a terminal in a connection state with a first base station changes, and acquiring a judgment condition;
and selecting at least one wireless data bearer which establishes connection with both the first base station and the second base station from the first wireless data bearer set according to the judgment condition.
Wherein the method for selecting the wireless data bearer further comprises:
storing the selected at least one radio data bearer establishing a connection with both the first base station and the second base station into a dual connectivity alternative radio data bearer set.
Further, the step of selecting at least one radio data bearer for establishing connection with both the first base station and the second base station from the first radio data bearer set according to the determination condition includes:
when the judging condition is a wireless data bearing set with service limitation and/or double connection limitation, determining whether the wireless data bearing set with the service limitation and/or double connection has the same wireless data bearing with the first wireless data bearing set;
if so, selecting at least one radio data bearer left by removing the same radio data bearer in the first radio data bearer set.
Further, the step of selecting at least one radio data bearer for establishing connection with both the first base station and the second base station from the first radio data bearer set according to the determination condition includes:
when the judging condition is that a wireless data bearing set of a preset client with double connection is established, determining whether the wireless data bearing set of the preset client has a wireless data bearing same as that of the first wireless data bearing set;
and if so, selecting at least one wireless data bearer which is the same as the wireless data bearer set of the preset client in the first wireless data bearer set.
Correspondingly, an embodiment of the present invention further provides a method for triggering a radio data bearer, including:
detecting a terminal in a connection state with a first base station, and acquiring a dual-connection alternative wireless data bearer set when the terminal is in a cell covered by the first base station and a second base station;
acquiring a preset trigger condition;
and triggering a dual-connection alternative wireless data bearer according to the preset triggering condition, and establishing connection with the first base station and the second base station.
Further, the preset trigger condition includes an end user service requirement, wherein the end user service requirement includes one or more of a data amount in a radio link control layer protocol-buffer RLC-buffer greater than a first threshold, a service amount greater than a second threshold in a continuous time, and subscription data with a priority of the user terminal.
Further, according to the preset trigger condition, triggering a dual-connection alternative radio data bearer to establish a connection with the first base station and the second base station, including:
when the service requirement of the terminal user is met, acquiring and detecting the signal intensity of the same coverage cell of the first base station and the second base station;
selecting a plurality of first cells with signal strength greater than a preset threshold value, and determining whether a first base station corresponding to a service cell of the terminal and a plurality of second base stations corresponding to the plurality of first cells belong to the same base station;
if not, triggering a dual-connection alternative wireless data bearer to establish connection with the first base station and the second base station.
Further, according to the preset trigger condition, triggering a dual-connection alternative radio data bearer to establish a connection with the first base station and the second base station, including:
when the service requirement of the terminal user is met, acquiring and detecting the load intensity of the same coverage cell of the first base station and the second base station;
selecting a plurality of second cells with load intensity smaller than a preset threshold value, and determining whether a first base station corresponding to a service cell of the terminal and a plurality of second base stations corresponding to the plurality of second cells belong to the same base station;
if not, triggering a dual-connection alternative wireless data bearer, and establishing connection with a first base station and a second base station of a second cell.
Further, according to the preset trigger condition, triggering a dual-connection alternative radio data bearer to establish a connection with the first base station and the second base station, including:
when the service requirement of the terminal user is met, acquiring and detecting the signal strength and the load strength of the same coverage cell of the first base station and the second base station;
selecting a third cell with the strongest signal strength and the smallest load strength, and determining whether a first base station corresponding to the third cell and a second base station corresponding to a service cell of the terminal belong to the same base station;
if not, triggering a dual-connection alternative wireless data bearer to establish connection with the first base station and the second base station.
Correspondingly, an embodiment of the present invention further provides a device for selecting a radio bearer, including:
the detection module is used for detecting that any wireless data bearer in a first wireless data bearer set of a terminal in a connection state with a first base station changes, and acquiring a judgment condition;
and the selecting module is used for selecting at least one wireless data bearer which establishes connection with both the first base station and the second base station from the first wireless data bearer set according to the judging condition.
Correspondingly, an embodiment of the present invention further provides a radio bearer triggering apparatus, including:
the processing module is used for detecting a terminal in a connection state with a first base station, and acquiring a dual-connection alternative wireless data bearing set when the terminal is positioned in a cell covered by the first base station and a second base station;
the acquisition module is used for acquiring a preset trigger condition;
and the triggering module is used for triggering a dual-connection alternative wireless data bearer according to the preset triggering condition and establishing connection with the first base station and the second base station.
Accordingly, an embodiment of the present invention provides a base station, including the above radio bearer selection apparatus or the above radio bearer triggering apparatus.
The technical scheme of the embodiment of the invention has the following beneficial effects:
in the scheme of the embodiment of the invention, a proper wireless data bearer set is selected through the change of the wireless data bearer, and the wireless bearers for carrying out double connection can be flexibly configured according to the judgment condition.
Drawings
Fig. 1 is a schematic diagram illustrating steps of a method for selecting a radio data bearer according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a specific implementation of a method for selecting a radio data bearer according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating steps of a method for triggering a radio data bearer according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a specific implementation of a method for triggering a radio data bearer according to an embodiment of the present invention;
FIG. 5 is a block diagram of an embodiment of a device for selecting a radio data bearer;
fig. 6 is a schematic step diagram of a triggering apparatus for radio data bearer according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The embodiments of the present invention provide a method, a device and a base station for selecting a radio data bearer, which are provided by the present invention, to solve the problems that reliability and service quality of VoLTE cannot be guaranteed without a flexible selection mechanism, and dual connectivity cannot be effectively started without a favorable trigger mechanism in the prior art.
First embodiment
As shown in fig. 1, the method for selecting a radio data bearer includes:
here, the connected state means that the terminal enters an RRC (connection reconfiguration) connected state; since the data bearer only exists when the terminal is in the RRC connected state, the change of the radio data bearer can be detected. The change can be the establishment, update or release of the wireless data bearer.
And step 12, selecting at least one wireless data bearer for establishing connection with both the first base station and the second base station from the first wireless data bearer set according to the judgment condition.
In the embodiment of the invention, a proper wireless data bearer set is selected through the change of the wireless data bearer, and the wireless bearers for carrying out double connection can be flexibly configured according to the judgment condition.
Second embodiment
The method for selecting the wireless data bearer may include:
here, the connected state means that the terminal enters an RRC (connection reconfiguration) connected state; since the data bearer only exists when the terminal is in the RRC connected state, the change of the radio data bearer can be detected.
The change can be the establishment, update or release of the wireless data bearer.
step 13, storing the selected at least one wireless data bearer establishing connection with both the first base station and the second base station into a dual-connection alternative wireless data bearer set.
In the embodiment of the invention, the dual-connection wireless data bearer capable of being established is stored in the dual-connection alternative wireless data bearer set, so that the dual-connection use is convenient to carry out subsequently.
Third embodiment
The method for selecting the wireless data bearer may include:
here, the connected state means that the terminal enters an RRC (connection reconfiguration) connected state; since the data bearer only exists when the terminal is in the RRC connected state, the change of the radio data bearer can be detected.
The change can be the establishment, update or release of the wireless data bearer.
Step 121, when the judging condition is a service-limited and/or dual-connection-limited radio data bearer set, determining whether there is a radio data bearer identical to the first radio data bearer set in the service-limited and/or dual-connection radio data bearer set;
the service in the service restriction referred to herein is a user service, which may be triggered by a user or triggered by a network server; by increasing the judgment of the service, the eNB can select whether the corresponding wireless data bearer is in double connection or not.
However, for specific traffic restrictions, a description is required here: the service restriction includes key support services (generally referred to as Voice over LTE (Voice over LTE) and IMS (IP multimedia Subsystem)) and QCI (Quality of service, level identification) configured based on an operator, where the configured key support services refer to services that the operator can configure key support in a network management system, that is, a wireless data bearer set without a dual connectivity function; for configuring a set of radio data bearers that may not be connected in the QCI set, such as for VoLTE-related radio bearers, QCI1, QCI2, and QCI5, a radio data bearer that may not be dual-connected may be configured, that is, only MeNB carries the service; a set of wireless data bearers to which connectivity can be made may also be configured in the set of QCIs.
The service restriction may further include determining by a service identifier, and determining based on the service identifier; if a service identifier sent by the UE or EPC (Evolved Packet Core) is received, the identifier may be compared with the configuration of the operator, and dual connectivity may be performed when the identifier is not within the service configuration range guaranteed by the operator, so that bearer separation is triggered.
The dual connectivity restriction is to determine whether the bearer can use the dual connectivity function according to the restriction of the dual connectivity function in the standard protocol. For example, in the 3GPP R12 version, a bearer using a UDP (User Datagram Protocol) Protocol cannot perform dual connection; bearers using RLC UM/TM (Radio Link Control, unacknowledged mode/transparent mode) Radio Link Control mode cannot be bearer separated, etc.
Step 122, if yes, selecting at least one remaining radio data bearer excluding the same radio data bearer in the first radio data bearer set.
For the set of radio data bearers configured in the QCI set, which may not be connected, all radio data bearers in the set have no means for performing radio data bearers.
In the embodiment of the invention, the wireless bearer of the double connection can be flexibly configured by aiming at the service differentiation, and the key guarantee service, such as the VoLTE service, can ensure that only the MeNB carries out the bearer, thereby being beneficial to ensuring the reliability and the service quality of the VoLTE service.
Fourth embodiment
here, the connected state means that the terminal enters an RRC (connection reconfiguration) connected state;
since the data bearer only exists when the terminal is in the RRC connected state, the change of the radio data bearer can be detected. The change can be the establishment, update or release of the wireless data bearer.
Step 123, when the judging condition is that the wireless data bearing set of the preset client with double connection is established, determining whether the wireless data bearing set of the preset client has the same wireless data bearing with the first wireless data bearing set;
the preset customers mentioned herein may mean that all companies providing mobile internet applications are preset customers for the operator. For such customers, the dual connectivity function may be treated differently. For example, for the load bearing of the high-quality threshold client, the dual-connection function is preferentially configured; for the bearer of the general client, the priority of not configuring or configuring the dual connectivity function is lower. The destination IP address of the data Packet can be mined through a Deep Packet Inspection (DPI) function to determine which type of client the bearer of the data Packet belongs to.
The specific example of specifically determining which type of client the bearer of the data packet belongs to is as follows: generally, the corresponding relationship between the target IP address of the data packet and the bearer user is specifically mined: for example, if the operator provides service differentiated services for the video a and the video B, it can be known whether the data packet is a video a or B service packet according to the destination address of the data packet, so that the setting of the dual connectivity function can be differentiated.
And 124, if yes, selecting at least one radio data bearer in the first radio data bearer set, which is the same as the radio data bearer set of the preset client.
In the embodiment of the invention, the scheme of limiting the wireless data bearer selection by considering the service client is adopted, the service experience of the threshold value client is optimized, and the service quality is also improved.
Fifth embodiment
The method for selecting the wireless data bearer may include:
here, the connected state means that the terminal enters an RRC (connection reconfiguration) connected state; since the data bearer only exists when the terminal is in the RRC connected state, the change of the radio data bearer can be detected.
The change can be the establishment, update or release of the wireless data bearer.
Step 123, when the judging condition is that the wireless data bearing set of the preset client with double connection is established, determining whether the wireless data bearing set of the preset client has the same wireless data bearing with the first wireless data bearing set;
the preset customers mentioned herein may mean that all companies providing mobile internet applications are preset customers for the operator. For such customers, the dual connectivity function may be treated differently. For example, for the load bearing of the high-quality threshold client, the dual-connection function is preferentially configured; for the bearer of the general client, the priority of not configuring or configuring the dual connectivity function is lower. The destination IP address of the data Packet can be mined through a Deep Packet Inspection (DPI) function to determine which type of client the bearer of the data Packet belongs to.
The specific example of specifically determining which type of client the bearer of the data packet belongs to is as follows: generally, the corresponding relationship between the target IP address of the data packet and the bearer user is specifically mined: for example, if the operator provides service differentiated services for the video a and the video B, it can be known whether the data packet is a video a or B service packet according to the destination address of the data packet, so that the setting of the dual connectivity function can be differentiated.
Step 124, if yes, selecting at least one wireless data bearer in the first wireless data bearer set, which is the same as the wireless data bearer set of the preset client;
step 13, storing the selected at least one wireless data bearer establishing connection with both the first base station and the second base station into a dual-connection alternative wireless data bearer set.
In the embodiment of the invention, the scheme of limiting the wireless data bearer selection by considering the service client is adopted, the service experience of the preset client is optimized, and the service quality is also improved; for the wireless data bearers corresponding to the preset client, the wireless data bearers are stored in the dual-connection alternative wireless data bearer set for subsequent use, so that when in use, the wireless data bearers are directly selected from the dual-connection alternative wireless data bearer set without temporary detection, and the efficiency is improved.
Sixth embodiment
The method for selecting the wireless data bearer may include:
The change can be the establishment, update or release of the wireless data bearer.
Step 121, when the judging condition is a service-limited and/or dual-connection-limited radio data bearer set, determining whether there is a radio data bearer identical to the first radio data bearer set in the service-limited and/or dual-connection radio data bearer set;
the service in the service restriction referred to herein is a user service, which may be triggered by a user or triggered by a network server; by increasing the judgment of the service, the eNB can select whether the corresponding wireless data bearer is in double connection or not.
However, for specific traffic restrictions, a description is required here: the service restriction includes key support services (generally referred to as Voice over LTE (Voice over LTE) and IMS (IP multimedia Subsystem)) and QCI (Quality of service, level identification) configured based on an operator, where the configured key support services refer to services that the operator can configure key support in a network management system, that is, a wireless data bearer set without a dual connectivity function; for configuring a set of radio data bearers that may not be connected in the QCI set, such as for VoLTE-related radio bearers, QCI1, QCI2, and QCI5, a radio data bearer that may not be dual-connected may be configured, that is, only MeNB carries the service; a set of wireless data bearers to which connectivity can be made may also be configured in the set of QCIs.
The service restriction may further include determining by a service identifier, and determining based on the service identifier; if a service identifier sent by the UE or EPC (Evolved Packet Core) is received, the identifier may be compared with the configuration of the operator, and dual connectivity may be performed when the identifier is not within the service configuration range guaranteed by the operator, so that bearer separation is triggered.
The dual connectivity restriction is to determine whether the bearer can use the dual connectivity function according to the restriction of the dual connectivity function in the standard protocol. For example, in the 3GPP R12 version, a bearer using a UDP (User Datagram Protocol) Protocol cannot perform dual connection; bearers using RLC UM/TM (Radio Link Control, unacknowledged mode/transparent mode) Radio Link Control mode cannot be bearer separated, etc.
Step 122, if yes, selecting at least one remaining radio data bearer excluding the same radio data bearer in the first radio data bearer set.
For the set of QCIs configured with a set of radio data bearers to which no connection can be made, all radio data bearers in the set have no means for radio data bearer;
step 123, when the judging condition is that the wireless data bearing set of the preset client with double connection is established, determining whether the wireless data bearing set of the preset client has the same wireless data bearing with the first wireless data bearing set;
the preset customers mentioned herein may mean that all companies providing mobile internet applications are preset customers for the operator. For such customers, the dual connectivity function may be treated differently. For example, for the load bearing of the high-quality threshold client, the dual-connection function is preferentially configured; for the bearer of the general client, the priority of not configuring or configuring the dual connectivity function is lower. The destination IP address of the data Packet can be mined through a Deep Packet Inspection (DPI) function to determine which type of client the bearer of the data Packet belongs to.
The specific example of specifically determining which type of client the bearer of the data packet belongs to is as follows: generally, the corresponding relationship between the target IP address of the data packet and the bearer user is specifically mined: for example, if the operator provides service differentiated services for the video a and the video B, it can be known whether the data packet is a video a or B service packet according to the destination address of the data packet, so that the setting of the dual connectivity function can be differentiated.
And 124, if yes, selecting at least one radio data bearer in the first radio data bearer set, which is the same as the radio data bearer set of the preset client.
In the embodiment of the invention, the problem of selecting the dual-connection wireless data bearer is solved by considering the service, the service client and the selection of the dual-connection wireless data bearer, so that an optimal wireless data bearer can be selected through the service client, the service client and the dual-connection wireless data bearer, an optimal set of wireless data bearers is formed, and a basis is provided for the subsequent management of the dual-connection wireless bearer.
As shown in fig. 2, a specific implementation flow of the embodiment of the present invention is as follows.
and step 204, putting the wireless data bearer meeting the judgment condition into a dual-connection alternative wireless data bearer set.
Seventh embodiment
As shown in fig. 3, the triggering method of the radio data bearer may include:
here, when the terminal UE measures the dual-connection alternative radio data bearer set, the configuration may be performed when the UE enters an RRC connected state; or when the UE has service requirements, the configuration is carried out. Furthermore, the moving speed of the UE needs to be considered: generally, the UE is determined according to a historical handover frequency of the UE, for example, the moving speed is lower than 60km/h, because the UE may quickly pass through a cell due to an excessively high speed, which may cause frequent handover and frequent start and stop of the dual connectivity function, and therefore, when the moving speed of the UE is excessively high, the dual connectivity function is not easily triggered.
the preset trigger condition comprises an end user service requirement, wherein the end user service requirement comprises one or more of the data volume in a radio link control layer protocol-buffer (RLC-buffer) which is larger than a first threshold, the service volume which is larger than a second threshold in continuous time and subscription data with priority of a user terminal. This avoids meaningless double connection configuration and opening.
Specifically, the data amount in the RLC-buffer is greater than a first threshold, where the first threshold may be configured in a network management system. For example, when the data carrying RLC-buffer is greater than or equal to 1Mbit (megabit), the dual connectivity may be activated alone, or the activation of the dual connectivity may be triggered when the traffic volume greater than the second threshold value in the continuous time and the subscription data of which the user terminal has priority are reached;
when the traffic volume in the continuous time reaches the second threshold, the continuous time may refer to a unit time, and the length of the continuous time and the size of the traffic volume may be configured in the network management system by an operator. For example, when a certain bearer reaches 1Mbit of traffic within 1 second, the dual connectivity may be activated alone, or when the data volume in the RLC-buffer of the RLC layer protocol, which is greater than the first threshold, and the subscription data of which the user terminal has priority are reached, the activation of the dual connectivity is triggered;
the subscription data refers to subscription data of the UE, and generally the subscription data shows that the UE is a high-priority user of an operator, for example, a VIP user, and activation of the dual connectivity function can be actively initiated according to the subscription data, so that user perception of the UE is improved.
And step 23, triggering a dual-connection alternative wireless data bearer according to the preset triggering condition, and establishing connection with the first base station and the second base station.
In the embodiment of the invention, after the user acquires the dual-connection alternative wireless data bearer set, one dual-connection alternative wireless data bearer is triggered according to the preset triggering condition, and the connection with the first base station and the second base station is established. Therefore, the effective opening of the dual-connection function can be ensured, and the triggering of meaningless dual connection and the generated signaling overhead are avoided.
Eighth embodiment
The triggering method of the wireless data bearer can include:
here, when the terminal UE measures the dual-connection alternative radio data bearer set, the configuration may be performed when the UE enters an RRC connected state; or when the UE has service requirements, the configuration is carried out. Furthermore, the moving speed of the UE needs to be considered: generally, the UE is determined according to a historical handover frequency of the UE, for example, the moving speed is lower than 60km/h, because the UE may quickly pass through a cell due to an excessively high speed, which may cause frequent handover and frequent start and stop of the dual connectivity function, and therefore, when the moving speed of the UE is excessively high, the dual connectivity function is not easily triggered.
the preset trigger condition comprises an end user service requirement, wherein the end user service requirement comprises one or more of the data volume in a radio link control layer protocol-buffer (RLC-buffer) which is larger than a first threshold, the service volume which is larger than a second threshold in continuous time and subscription data with priority of a user terminal. This avoids meaningless double connection configuration and opening.
Specifically, the data amount in the RLC-buffer is greater than a first threshold, where the first threshold may be configured in a network management system. For example, when the data carrying RLC-buffer is greater than or equal to 1Mbit (megabit), the dual connectivity may be activated alone, or the activation of the dual connectivity may be triggered when the traffic volume greater than the second threshold value in the continuous time and the subscription data of which the user terminal has priority are reached;
when the traffic volume in the continuous time reaches the second threshold, the continuous time may refer to a unit time, and the length of the continuous time and the size of the traffic volume may be configured in the network management system by an operator. For example, when a certain bearer reaches 1Mbit of traffic within 1 second, the dual connectivity may be activated alone, or when the data volume in the RLC-buffer of the RLC layer protocol, which is greater than the first threshold, and the subscription data of which the user terminal has priority are reached, the activation of the dual connectivity is triggered;
the subscription data refers to subscription data of the UE, and generally the subscription data shows that the UE is a high-priority user of an operator, for example, a VIP user, and activation of the dual connectivity function can be actively initiated according to the subscription data, so that user perception of the UE is improved.
231, when the service requirement of the terminal user is met, acquiring and detecting the signal strength of the same coverage cell of the first base station and the second base station;
the cells covered by different base stations can mean that a plurality of base stations cover the same cell, namely a plurality of cells exist, but the signal strength of the cells corresponding to each base station is different, and the cell with the best signal strength is generally selected to carry out double connection, so that the call quality and the experience effect of a user can be improved.
Step 232, selecting a plurality of first cells with signal strength greater than a preset threshold value, and determining whether a first base station corresponding to a serving cell of the terminal and a plurality of second base stations corresponding to the plurality of first cells belong to the same base station;
in the above, when the signal strength in the measurement report reported by the UE is higher than the preset threshold within the time t, the dual connectivity function is selected; it is generally preferable that the signal strength is the best, and the dual connection function is performed, so that the communication quality is optimized in an environment with strong signal strength.
The above-mentioned determining whether the first base station corresponding to the serving cell of the terminal and the second base station corresponding to the first cell belong to the same base station is for better establishing dual connectivity and increasing the user rate; for the carrier set CA, the user rate is also improved, but the application scenarios of the carrier set CA and the user rate are different, the CA is used in a co-sited scenario for carrier aggregation, and the dual-connection is used in a non co-sited scenario; the functions of the two are different, and the CA function is to configure the Scell when the UE enters the RRC connection state and then carry out real-time scheduling; the dual connectivity function considers the location and coverage of the cell and is configured when there is a traffic demand. The CA is preferably opened generally, and the double-connection function can be opened in a superposition way.
Step 234, if not, triggering a dual-connection alternative wireless data bearer to establish connection with the first base station and the second base station.
In the embodiment of the invention, the terminal enters the same coverage cell, the cell capable of establishing the dual connectivity is judged and determined through the signal strength, the cell with weaker signal strength can be eliminated, and the effectiveness of dual connectivity opening is ensured.
Ninth embodiment
The triggering method of the wireless data bearer comprises the following steps:
here, when the terminal UE measures the dual-connection alternative radio data bearer set, the configuration may be performed when the UE enters an RRC connected state; or when the UE has service requirements, the configuration is carried out. Furthermore, the moving speed of the UE needs to be considered: generally, the UE is determined according to a historical handover frequency of the UE, for example, the moving speed is lower than 60km/h, because the UE may quickly pass through a cell due to an excessively high speed, which may cause frequent handover and frequent start and stop of the dual connectivity function, and therefore, when the moving speed of the UE is excessively high, the dual connectivity function is not easily triggered.
the preset trigger condition comprises an end user service requirement, wherein the end user service requirement comprises one or more of the data volume in a radio link control layer protocol-buffer (RLC-buffer) which is larger than a first threshold, the service volume which is larger than a second threshold in continuous time and subscription data with priority of a user terminal. This avoids meaningless double connection configuration and opening.
Specifically, the data amount in the RLC-buffer is greater than a first threshold, where the first threshold may be configured in a network management system. For example, when the data carrying RLC-buffer is greater than or equal to 1Mbit (megabit), the dual connectivity may be activated alone, or the activation of the dual connectivity may be triggered when the traffic volume greater than the second threshold value in the continuous time and the subscription data of which the user terminal has priority are reached;
when the traffic volume in the continuous time reaches the second threshold, the continuous time may refer to a unit time, and the length of the continuous time and the size of the traffic volume may be configured in the network management system by an operator. For example, when a certain bearer reaches 1Mbit of traffic within 1 second, the dual connectivity may be activated alone, or when the data volume in the RLC-buffer of the RLC layer protocol, which is greater than the first threshold, and the subscription data of which the user terminal has priority are reached, the activation of the dual connectivity is triggered;
the subscription data refers to subscription data of the UE, and generally the subscription data shows that the UE is a high-priority user of an operator, for example, a VIP user, and activation of the dual connectivity function can be actively initiated according to the subscription data, so that user perception of the UE is improved.
Step 235, when the service requirement of the terminal user is met, acquiring and detecting the load intensity of the same coverage cell of the first base station and the second base station;
in the above, when the load intensity in the measurement report reported by the UE is smaller than the preset threshold within the time t, the dual connectivity function is selected; it is generally preferable that the load strength is the minimum, and the dual connection function is performed, so that it is possible to prevent the communication quality from being affected by an excessive load.
The above-mentioned determining whether the first base station corresponding to the serving cell of the terminal and the second base station corresponding to the first cell belong to the same base station is for better establishing dual connectivity and increasing the user rate; for the carrier set CA, the user rate is also improved, but the application scenarios of the carrier set CA and the user rate are different, the CA is used in a co-sited scenario for carrier aggregation, and the dual-connection is used in a non co-sited scenario; the functions of the two are different, and the CA function is to configure the Scell when the UE enters the RRC connection state and then carry out real-time scheduling; the dual connectivity function considers the location and coverage of the cell and is configured when there is a traffic demand. The CA is preferably opened generally, and the double-connection function can be opened in a superposition way.
Step 236, selecting a plurality of second cells with load intensity smaller than a preset threshold, and determining whether a first base station corresponding to a serving cell of the terminal and a plurality of second base stations corresponding to the plurality of second cells belong to the same base station;
the preset threshold, such as the load range where the cell reaches 70% -100% of the load, is basically without gain for the dual connection, because in case of an excessive load, there is no gain for the dual connection.
Step 237, if not, triggering a dual-connection alternative wireless data bearer to establish a connection with the first base station and the second base station of a second cell.
In the embodiment of the invention, the terminal enters the same-coverage cell, the cell capable of establishing the double connection is judged and determined through the load, and the cell with larger load can be eliminated, so that the double connection load cannot be continuously increased on the original larger load, and the influence on the communication quality after the double connection is started is reduced.
Tenth embodiment
The triggering method of the wireless data bearer can include:
here, when the terminal UE measures the dual-connection alternative radio data bearer set, the configuration may be performed when the UE enters an RRC connected state; or when the UE has service requirements, the configuration is carried out. Furthermore, the moving speed of the UE needs to be considered: generally, the UE is determined according to a historical handover frequency of the UE, for example, the moving speed is lower than 60km/h, because the UE may quickly pass through a cell due to an excessively high speed, which may cause frequent handover and frequent start and stop of the dual connectivity function, and therefore, when the moving speed of the UE is excessively high, the dual connectivity function is not easily triggered.
the preset trigger condition comprises an end user service requirement, wherein the end user service requirement comprises one or more of the data volume in a radio link control layer protocol-buffer (RLC-buffer) which is larger than a first threshold, the service volume which is larger than a second threshold in continuous time and subscription data with priority of a user terminal. This avoids meaningless double connection configuration and opening.
Specifically, the data amount in the RLC-buffer is greater than a first threshold, where the first threshold may be configured in a network management system. For example, when the data carrying RLC-buffer is greater than or equal to 1Mbit (megabit), the dual connectivity may be activated alone, or the activation of the dual connectivity may be triggered when the traffic volume greater than the second threshold value in the continuous time and the subscription data of which the user terminal has priority are reached;
when the traffic volume in the continuous time reaches the second threshold, the continuous time may refer to a unit time, and the length of the continuous time and the size of the traffic volume may be configured in the network management system by an operator. For example, when a certain bearer reaches 1Mbit of traffic within 1 second, the dual connectivity may be activated alone, or when the data volume in the RLC-buffer of the RLC layer protocol, which is greater than the first threshold, and the subscription data of which the user terminal has priority are reached, the activation of the dual connectivity is triggered;
the subscription data refers to subscription data of the UE, and generally the subscription data shows that the UE is a high-priority user of an operator, for example, a VIP user, and activation of the dual connectivity function can be actively initiated according to the subscription data, so that user perception of the UE is improved.
Step 238, when the service requirement of the terminal user is met, acquiring and detecting the signal strength and the load strength of the same coverage cell of the first base station and the second base station;
step 249, selecting a third cell with the strongest signal strength and the smallest load strength, and determining whether a first base station corresponding to a serving cell of the terminal and a second base station corresponding to the third cell belong to the same base station;
in order to ensure the optimal opening of the double connection, the effective opening of the double connection is triggered through the double selection of the signal strength and the load strength.
And step 250, if not, triggering a dual-connection alternative wireless data bearer to establish connection with the first base station and the second base station.
In the embodiment of the invention, the connection with the first base station and the second base station is established by finding the alternative wireless data bearer with double connection according to the load and the signal strength. Therefore, the unlimited service volume and the cell load can be comprehensively considered, the double connection can be effectively opened, and the condition that the double connection is triggered under the condition that no better condition exists, so that redundant signaling overhead is generated and no gain exists is avoided.
As shown in fig. 4, a specific implementation flow of the embodiment of the present invention is as follows.
and step 406, triggering the radio data bearers meeting the preset triggering condition to perform bearer separation.
Eleventh embodiment
As shown in fig. 5, the selection device of the radio bearer may include:
a detecting module 31, configured to obtain a determination condition when any one of the radio data bearers in the first radio data bearer set of the terminal in the connected state with the first base station changes;
here, the connected state means that the terminal enters an RRC (connection reconfiguration) connected state; since the data bearer only exists when the terminal is in the RRC connected state, the change of the radio data bearer can be detected. The change can be the establishment, update or release of the wireless data bearer.
A selecting module 32, configured to select, according to the determining condition, at least one radio data bearer that establishes a connection with both the first base station and the second base station from the first radio data bearer set.
In the embodiment of the invention, a proper wireless data bearer set is selected through the change of the wireless data bearer, and the wireless bearers for carrying out double connection can be flexibly configured according to the judgment condition.
It should be noted that the apparatus provided by the present invention is an apparatus applying the method for selecting a radio data bearer, and all embodiments of the method for selecting a radio data bearer are applicable to the apparatus and can achieve the same or similar beneficial effects.
Twelfth embodiment
A twelfth embodiment of the present invention is a selection device based on a radio data bearer in the eleventh embodiment, further including:
a storage module, configured to store the selected at least one radio data bearer that establishes a connection with both the first base station and the second base station into a dual-connection alternative radio data bearer set.
Thirteenth embodiment
A thirteenth embodiment of the present invention is a selection apparatus based on a radio data bearer in the eleventh embodiment, wherein the selection module includes:
a first determining sub-module, configured to determine, when the determination condition is a service-limited and/or dual-connection-limited radio data bearer set, whether a radio data bearer identical to the radio data bearer set exists in the service-limited and/or dual-connection radio data bearer set;
a first selecting sub-module, configured to select at least one remaining radio data bearer excluding the same radio data bearer in the first radio data bearer set if there is a radio data bearer remaining in the first radio data bearer set.
Fourteenth embodiment
A fourteenth embodiment of the present invention is a selecting apparatus based on a radio data bearer in the eleventh, twelfth or thirteenth embodiment, including:
a second determining submodule, configured to determine whether the wireless data bearer set of the preset client having the same wireless data bearer as the first wireless data bearer set exists when the determination condition is that the wireless data bearer set of the preset client having the dual connection is established;
and the second selection submodule is used for selecting at least one wireless data bearer which is the same as the wireless data bearer set of the preset client in the first wireless data bearer set if the first wireless data bearer set exists.
Fifteenth embodiment
As shown in fig. 6, the apparatus for triggering a radio bearer includes:
a processing module 41, configured to detect a terminal in a connected state with a first base station, and obtain a dual-connection alternative radio data bearer set when the terminal is located in a cell covered by the first base station and a cell covered by a second base station;
here, when the terminal UE measures the dual-connection alternative radio data bearer set, the configuration may be performed when the UE enters an RRC connected state; or when the UE has service requirements, the configuration is carried out. Furthermore, the moving speed of the UE needs to be considered: generally, the UE is determined according to a historical handover frequency of the UE, for example, the moving speed is lower than 60km/h, because the UE may quickly pass through a cell due to an excessively high speed, which may cause frequent handover and frequent start and stop of the dual connectivity function, and therefore, when the moving speed of the UE is excessively high, the dual connectivity function is not easily triggered.
An obtaining module 42, configured to obtain a preset trigger condition;
the preset trigger condition comprises an end user service requirement, wherein the end user service requirement comprises one or more of the data volume in a radio link control layer protocol-buffer (RLC-buffer) which is larger than a first threshold, the service volume which is larger than a second threshold in continuous time and subscription data with priority of a user terminal. This avoids meaningless double connection configuration and opening.
Specifically, the data amount in the RLC-buffer is greater than a first threshold, where the first threshold may be configured in a network management system. For example, when the data carrying RLC-buffer is greater than or equal to 1Mbit (megabit), the dual connectivity may be activated alone, or the activation of the dual connectivity may be triggered when the traffic volume greater than the second threshold value in the continuous time and the subscription data of which the user terminal has priority are reached;
when the traffic volume in the continuous time reaches the second threshold, the continuous time may refer to a unit time, and the length of the continuous time and the size of the traffic volume may be configured in the network management system by an operator. For example, when a certain bearer reaches 1Mbit of traffic within 1 second, the dual connectivity may be activated alone, or when the data volume in the RLC-buffer of the RLC layer protocol, which is greater than the first threshold, and the subscription data of which the user terminal has priority are reached, the activation of the dual connectivity is triggered;
the subscription data refers to subscription data of the UE, and generally the subscription data shows that the UE is a high-priority user of an operator, for example, a VIP user, and activation of the dual connectivity function can be actively initiated according to the subscription data, so that user perception of the UE is improved.
And a triggering module 43, configured to trigger a dual connectivity alternative radio data bearer according to the preset triggering condition, and establish a connection with the first base station and the second base station.
In the embodiment of the invention, after the user acquires the dual-connection alternative wireless data bearer set, one dual-connection alternative wireless data bearer is triggered according to the preset triggering condition, and the connection with the first base station and the second base station is established. Therefore, the effective opening of the dual-connection function can be ensured, and the triggering of meaningless dual connection and the generated signaling overhead are avoided.
It should be noted that the apparatus provided by the present invention is an apparatus applying the triggering method for radio data bearer, and all embodiments of the triggering method for radio data bearer are applicable to the apparatus and can achieve the same or similar beneficial effects.
Sixteenth embodiment
A sixteenth embodiment of the present invention is a triggering apparatus for a wireless data bearer according to the fifteenth embodiment,
the preset trigger condition comprises a terminal user service requirement, wherein the terminal user service requirement comprises one or more of the data volume in a radio link control layer protocol-buffer (RLC-buffer) which is larger than a first threshold, the service volume which is larger than a second threshold in continuous time and subscription data with priority of a user terminal.
Seventeenth embodiment
A seventeenth embodiment of the present invention is a triggering apparatus based on a radio data bearer in the sixteenth embodiment, wherein the triggering module includes:
the first acquisition detection submodule is used for acquiring and detecting the signal intensity of the same coverage cell of the first base station and the second base station when the service requirement of the terminal user is met;
a third selection submodule, configured to select multiple first cells with signal strengths greater than a preset threshold value, and determine whether a first base station corresponding to a serving cell of the terminal and multiple second base stations corresponding to the multiple first cells belong to the same base station;
and the first triggering submodule is used for triggering a dual-connection alternative wireless data bearer and establishing connection with the first base station and the second base station if the dual-connection alternative wireless data bearer is not triggered.
Eighteenth embodiment
An eighteenth embodiment of the present invention is a triggering apparatus based on a radio data bearer in the sixteenth embodiment, where the triggering module includes:
the second acquisition detection submodule is used for acquiring and detecting the load intensity of the same coverage cell of the first base station and the second base station when the service requirement of the terminal user is met;
a fourth selection submodule, configured to select multiple second cells with load strengths smaller than a preset threshold, and determine whether a first base station corresponding to a serving cell of the terminal and multiple second base stations corresponding to the multiple second cells belong to the same base station;
and the second triggering submodule is used for triggering a dual-connection alternative wireless data bearer and establishing connection with the first base station and the second base station of a second cell if the dual-connection alternative wireless data bearer is not triggered.
Nineteenth embodiment
A nineteenth embodiment of the present invention is a triggering apparatus based on a radio data bearer in the sixteenth embodiment, wherein the triggering module includes:
a third obtaining and detecting submodule, configured to obtain and detect signal strength and load strength of a cell covered by the first base station and the second base station when the service requirement of the terminal user is met;
a fifth selection submodule, configured to select a third cell with the strongest signal strength and the smallest load strength, and determine whether a first base station corresponding to a serving cell of the terminal and a second base station corresponding to the third cell belong to the same base station;
and the third triggering submodule is used for triggering a dual-connection alternative wireless data bearer to establish connection with the first base station and the second base station if the dual-connection alternative wireless data bearer is not triggered.
Twentieth embodiment
Correspondingly, an embodiment of the present invention further provides a base station, including the above radio bearer selection device or the above radio bearer triggering device.
It should be noted that the base station may be an evolved node b eNB.
Accordingly, since the selection device of the radio bearer or the triggering device of the radio bearer in the embodiments of the present invention is applied to a base station, the embodiments of the present invention further provide a base station, wherein the implementation embodiments of the selection device of the radio bearer or the triggering device of the radio bearer are both applicable to the embodiments of the base station, and the same technical effect can be achieved.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (11)
1. A method for selecting a radio data bearer, comprising:
detecting that any one wireless data bearer in a first wireless data bearer set of a terminal in a connection state with a first base station changes, and acquiring a judgment condition;
according to the judgment condition, selecting at least one wireless data bearer which establishes connection with both the first base station and the second base station from the first wireless data bearer set, including:
when the judging condition is a wireless data bearing set with service limitation and/or double connection limitation, determining whether the wireless data bearing set with the service limitation and/or the double connection limitation has the same wireless data bearing with the first wireless data bearing set;
if so, selecting at least one radio data bearer left by removing the same radio data bearer in the first radio data bearer set.
2. The method for selecting a radio data bearer of claim 1, further comprising:
storing the selected at least one radio data bearer establishing a connection with both the first base station and the second base station into a dual connectivity alternative radio data bearer set.
3. The method as claimed in any one of claims 1 to 2, wherein the step of selecting at least one radio data bearer from the first set of radio data bearers for establishing connection with both the first base station and the second base station according to the determination condition comprises:
when the judging condition is that a wireless data bearing set of a preset client with double connection is established, determining whether the wireless data bearing set of the preset client has a wireless data bearing same as that of the first wireless data bearing set;
and if so, selecting at least one wireless data bearer which is the same as the wireless data bearer set of the preset client in the first wireless data bearer set.
4. A method for triggering a radio data bearer, comprising:
detecting a terminal in a connection state with a first base station, and acquiring a dual-connection alternative wireless data bearer set when the terminal is in a cell covered by the first base station and a second base station; when any wireless data bearer in the dual-connection alternative wireless data bearer set changes, acquiring a judgment condition, and when the judgment condition is a wireless data bearer set with service limitation and/or dual-connection limitation, determining whether the wireless data bearer set with the service limitation and/or dual-connection limitation has the same wireless data bearer as the first wireless data bearer set; if yes, selecting at least one wireless data bearer which is not the same wireless data bearer but is left in the first wireless data bearer set;
acquiring a preset trigger condition;
and triggering a dual-connection alternative wireless data bearer according to the preset triggering condition, and establishing connection with the first base station and the second base station.
5. The method of claim 4, wherein the preset trigger condition comprises an end user service requirement, wherein the end user service requirement comprises one or more of an amount of data in a radio link control layer protocol-buffer (RLC-buffer) that is greater than a first threshold, an amount of traffic that is greater than a second threshold in a continuous time, and subscription data that the user terminal has priority.
6. The method for triggering radio data bearer according to claim 5, wherein the step of triggering a dual connectivity alternative radio data bearer to establish a connection with the first base station and the second base station according to the preset trigger condition comprises:
when the service requirement of the terminal user is met, acquiring and detecting the signal intensity of the same coverage cell of the first base station and the second base station;
selecting a plurality of first cells with signal strength greater than a preset threshold value, and determining whether a first base station corresponding to a service cell of the terminal and a plurality of second base stations corresponding to the plurality of first cells belong to the same base station;
if not, triggering a dual-connection alternative wireless data bearer to establish connection with the first base station and the second base station.
7. The method for triggering radio data bearer according to claim 5, wherein the step of triggering a dual connectivity alternative radio data bearer to establish a connection with the first base station and the second base station according to the preset trigger condition comprises:
when the service requirement of the terminal user is met, acquiring and detecting the load intensity of the same coverage cell of the first base station and the second base station;
selecting a plurality of second cells with load intensity smaller than a preset threshold value, and determining whether a first base station corresponding to a service cell of the terminal and a plurality of second base stations corresponding to the plurality of second cells belong to the same base station;
if not, triggering a dual-connection alternative wireless data bearer, and establishing connection with a first base station and a second base station of a second cell.
8. The method for triggering radio data bearer according to claim 5, wherein the step of triggering a dual connectivity alternative radio data bearer to establish a connection with the first base station and the second base station according to the preset trigger condition comprises:
when the service requirement of the terminal user is met, acquiring and detecting the signal strength and the load strength of the same coverage cell of the first base station and the second base station;
selecting a third cell with the strongest signal strength and the smallest load strength, and determining whether a first base station corresponding to the third cell and a second base station corresponding to a service cell of the terminal belong to the same base station;
if not, triggering a dual-connection alternative wireless data bearer to establish connection with the first base station and the second base station.
9. An apparatus for selecting a radio bearer, comprising:
the detection module is used for detecting that any wireless data bearer in a first wireless data bearer set of a terminal in a connection state with a first base station changes, and acquiring a judgment condition; when the judging condition is a wireless data bearing set with service limitation and/or double connection limitation, determining whether the wireless data bearing set with the service limitation and/or the double connection limitation has the same wireless data bearing with the first wireless data bearing set; if yes, selecting at least one wireless data bearer which is not the same wireless data bearer but is left in the first wireless data bearer set;
and the selecting module is used for selecting at least one wireless data bearer which establishes connection with both the first base station and the second base station from the first wireless data bearer set according to the judging condition.
10. An apparatus for triggering a radio bearer, comprising:
the processing module is used for detecting a terminal in a connection state with a first base station, and acquiring a dual-connection alternative wireless data bearing set when the terminal is positioned in a cell covered by the first base station and a second base station; when any wireless data bearer in the dual-connection alternative wireless data bearer set changes, acquiring a judgment condition, and when the judgment condition is a wireless data bearer set with service limitation and/or dual-connection limitation, determining whether the wireless data bearer set with the service limitation and/or dual-connection limitation has the same wireless data bearer as the first wireless data bearer set; if yes, selecting at least one wireless data bearer which is not the same wireless data bearer but is left in the first wireless data bearer set;
the acquisition module is used for acquiring a preset trigger condition;
and the triggering module is used for triggering a dual-connection alternative wireless data bearer according to the preset triggering condition and establishing connection with the first base station and the second base station.
11. A base station comprising radio bearer selection means according to claim 9 or radio bearer triggering means according to claim 10.
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| CN104105221B (en) * | 2013-04-15 | 2019-05-21 | 中兴通讯股份有限公司 | A kind of implementation method of dual link and base station |
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