CN113692068B - Terminal signal measurement method and system - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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Abstract
The application discloses a terminal signal measurement method and a system, wherein the method comprises the following steps: when the UE successfully accesses the NSA network or is transmitting data in the 5G auxiliary cell, the UE keeps double connection with the 4G main cell and the 5G auxiliary cell, and the channel quality of the 4G main cell and the 5G auxiliary cell is measured in real time; when the 5G auxiliary cell detects that no data transmission exists between the 5G auxiliary cell and the UE for a continuous preset time period, deleting the RRC context established by the 5G auxiliary cell for the UE, reserving corresponding RRC context configuration information, setting the 5G auxiliary cell to be connected into a transient state and notifying the UE; and the UE releases the corresponding RRC context of the local side according to the notification, and continuously measures the channel quality of the 5G auxiliary cell in real time. By adopting the application, the terminal can accurately display the current signal coverage condition in the NSA EN-DC mode.
Description
Technical Field
The application relates to a mobile communication technology, in particular to a terminal signal measuring method and a system based on non-independent Networking (NSA) EUTRA-NR double connection (EUTRA-NR Dual Connection, EN-DC)
Background
As a new generation of 3GPP wireless communication technology, 5G has the characteristics of high rate, low delay, large capacity, and the like, and is rapidly deployed and applied at home and abroad, especially in the fields of enterprises and industries, and 5G plays an increasing role.
In the early stages of 5G deployment, most operators choose NSA mode in order to save costs and develop services quickly. NSA is a scheme for transitioning the entire 4G network to the 5G network. In the model of NSA, 4G and 5G coexist. From this point of view, the NSA phase 5G network is actually an enhancement of the 4G network.
In the mobile communication network, there are three layers of core network, base station and mobile phone terminal. The core network refers to the entire communication network, and the base station is an element constituting the core network. In the 4G era, the core network is 4G, the base station is also a 4G base station, and the mobile phone terminal is also a 4G antenna. This is a standard 4G network. In the non-independent networking scheme of NSA, the core may be 4G or 5G, and the base station may also be 4G or 5G.
EN-DC dual connectivity is a typical NSA networking mode. FIG. 1 is a schematic diagram of NSA EUTRA-NR dual connectivity networking. In fig. 1, a module EPC represents a core network, a module LTE represents a 4G base station, and a module NR represents a 5G base station (i.e., a new air interface (NR) base station). As shown in fig. 1, the Option3 series architecture (Option 3 and Option3 x) is EN-DC. In the option3 series architecture, the 5G base station preferentially accesses the 4G core network (EPC), which is a dual connection with 4G as a main node and 5G as an auxiliary node.
The inventors have found in the course of implementing the application that in NSA EN-DC mode, only the 4G signal artefacts are shown in the terminal in a scenario where there is simultaneous 4G or 5G signal coverage. The inventor finds that the reason for the above problems is as follows through analysis of the terminal signal measurement scheme in the existing NSA EN-DC mode:
in NSA EN-DC mode, the 5G terminal selects an LTE base station as an anchor point, an LTE base station as a camping CELL, and simultaneously selects EPC as a core network, and selects a nearby NR base station as a secondary CELL according to a neighbor configuration message, for example, the current 5G terminal selects LTE CELL0 as the anchor point camping CELL, and selects a nearby NR CELL1 as the secondary CELL according to neighbor information configured by the base station, so that the terminal connects 4G and 5G base stations at the same time. If the terminal has no data transmission in the NR auxiliary cell for a long time, the base station releases the context of the NR auxiliary cell, and meanwhile, the terminal does not measure the auxiliary cell any more, so that the terminal cannot acquire the channel quality of the NR auxiliary cell in the scene, the terminal cannot present the 4G or 5G signal intensity to the user at the same time, and finally, the illusion that only 4G signals exist currently is caused.
Disclosure of Invention
In view of the above, a main object of the present application is to provide a method and a system for measuring signal of a terminal, so that the terminal can accurately display the current signal coverage condition in NSA EN-DC mode.
In order to achieve the above purpose, the technical scheme provided by the application is as follows:
a terminal signal measurement method, comprising:
when User Equipment (UE) successfully accesses an NSA network or is transmitting data in a 5G auxiliary cell, the UE is in double connection with a 4G main cell and the 5G auxiliary cell, and channel quality of the 4G main cell and the 5G auxiliary cell is measured in real time;
when the 5G auxiliary cell detects that no data transmission exists between the 5G auxiliary cell and the UE for a continuous preset time length, deleting a Radio Resource Control (RRC) context established by the 5G auxiliary cell for the UE, reserving corresponding RRC context configuration information, setting the 5G auxiliary cell to be connected into a transient state and notifying the UE;
and the UE releases the corresponding RRC context of the local side according to the notification, and continuously measures the channel quality of the 5G auxiliary cell in real time.
Preferably, the method further comprises:
and triggering the 5G auxiliary cell connection to exit from the transient state if data transmission is needed between the UE and the 5G base station during the transient state of the 5G auxiliary cell connection, and reestablishing RRC connection for the UE according to the RRC context configuration information.
Preferably, the method further comprises:
and when the UE cannot measure the channel quality of the 5G auxiliary cell, triggering and releasing related resources of the 5G auxiliary cell connection, stopping measuring the channel quality of the 5G auxiliary cell in real time and exiting the dual connection.
Preferably, the triggering to release the related resources of the 5G secondary cell connection, stopping real-time measurement of the channel quality of the 5G secondary cell, and exiting the dual connection includes:
when the UE cannot measure the channel quality of the 5G auxiliary cell, the UE reports the unable measurement to a core network through a 4G main cell;
the core network informs the 4G main cell to delete the RRC connection established by the 5G auxiliary cell for the UE according to the report;
triggering the 5G auxiliary cell to delete relevant information of corresponding RRC connection according to the notification by the 4G main cell, and triggering the UE to stop measuring the channel quality of the 5G auxiliary cell; then, the 4G main cell deletes the double connection information of the local UE and notifies the core network that the UE has exited the double connection;
and deleting the double connection information of the UE in the core network by the core network according to the notification that the UE has exited the double connection.
A terminal signal measurement system, comprising:
the User Equipment (UE) is used for maintaining double connection with the 4G main cell and the 5G auxiliary cell when the NSA network is successfully accessed or the data is transmitted by the 5G auxiliary cell, and measuring the channel quality of the 4G main cell and the 5G auxiliary cell in real time;
the 5G auxiliary cell is used for deleting the Radio Resource Control (RRC) context established by the 5G auxiliary cell for the UE when no data transmission with the UE is detected for a continuous preset time period, reserving corresponding RRC context configuration information, setting the 5G auxiliary cell to be connected into a transient state and notifying the UE;
and the UE is used for releasing the corresponding RRC context of the local side according to the notification and continuously measuring the channel quality of the 5G auxiliary cell in real time.
And the UE is used for triggering the 5G auxiliary cell connection to exit from the transient state as a data sender when the data transmission is needed between the UE and the 5G base station during the transient state of the 5G auxiliary cell connection, and reestablishing RRC connection for the UE according to the RRC context configuration information.
And the 5G base station is used for triggering the 5G auxiliary cell connection to exit from the transient state as a data sender when the data transmission is needed between the UE and the 5G base station during the transient state of the 5G auxiliary cell connection, and reestablishing RRC connection for the UE according to the RRC context configuration information.
Preferably, the UE is further configured to trigger to release related resources of the 5G secondary cell connection, stop measuring the channel quality of the 5G secondary cell in real time, and exit the dual connection when the channel quality of the 5G secondary cell cannot be measured.
Preferably, the UE is configured to report, when channel quality of the 5G secondary cell cannot be measured, the unable measurement to the core network through the 4G primary cell;
the core network is configured to notify the 4G primary cell to delete the RRC connection established by the 5G secondary cell for the UE according to the reporting;
the 4G primary cell is configured to trigger the 5G secondary cell to delete relevant information of a corresponding RRC connection according to the notification, and trigger the UE to stop measuring channel quality of the 5G secondary cell; then deleting the double connection information of the UE in the 4G main cell, and informing the core network that the UE has exited the double connection;
and the core network is used for deleting the double connection information of the UE in the core network according to the notification that the UE has exited the double connection.
As can be seen from the above technical solution, in the terminal signal measurement solution provided by the present application, when the 5G secondary cell detects that there is no data transmission with the UE for a duration preset period, only the RRC context established by the 5G secondary cell for the UE is deleted, the corresponding RRC context configuration information still needs to be reserved, and meanwhile, a connection entering transient state of the 5G secondary cell needs to be set and notified to the UE, and after receiving the notification of the entering transient state, the UE only releases the corresponding RRC context on the home side and does not stop measuring the channel quality of the 5G secondary cell. Therefore, the false image that only 4G signals are displayed on the UE when the UE and the 5G auxiliary cell do not transmit data for a long time can be avoided, and the terminal can accurately display the current signal coverage condition in the NSA EN-DC mode while the 5G auxiliary cell connection resources are released in time.
Drawings
FIG. 1 is a schematic diagram of a conventional NSA EUTRA-NR dual connectivity networking;
FIG. 2 is a flow chart of a method according to an embodiment of the application;
fig. 3 is a schematic diagram of a specific example of terminal signal measurement implemented according to an embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the drawings and the embodiments, in order to make the objects, technical solutions and advantages of the present application more apparent.
Fig. 2 is a flow chart of a method according to an embodiment of the present application, as shown in fig. 2, a method for measuring a terminal signal according to the embodiment mainly includes:
step 201, when the UE successfully accesses the NSA network or is transmitting data in the 5G secondary cell, the UE maintains dual connection with the 4G primary cell and the 5G secondary cell, and measures channel quality of the 4G primary cell and the 5G secondary cell in real time.
Step 202, when a 5G auxiliary cell detects that no data transmission exists between the 5G auxiliary cell and the UE for a duration preset, deleting a Radio Resource Control (RRC) context established by the 5G auxiliary cell for the UE, reserving corresponding RRC context configuration information, setting the 5G auxiliary cell to be connected into a transient state, and notifying the UE.
In this step, unlike the existing scheme, when the 5G secondary cell detects that there is no data transmission with the UE for a duration preset, only the RRC context established by the 5G secondary cell for the UE is deleted, corresponding RRC context configuration information still needs to be reserved, and the 5G secondary cell is set to enter a transient state and notify the UE. Here, by introducing a transient state, which is a new secondary cell connection state, in which the network side still needs to keep the corresponding RRC context configuration information, so that when there is no data transmission between the 5G secondary cell and the UE, the UE can still measure the channel quality for the 5G secondary cell.
The setting of the preset duration may be set by a person skilled in the art according to actual needs, and will not be described herein.
Step 203, the UE releases the corresponding RRC context on the home side according to the notification, and continues to measure the channel quality of the 5G secondary cell in real time.
In one embodiment, in order to improve the data transmission efficiency of the UE, the method may further include:
and triggering the 5G auxiliary cell connection to exit from the transient state if data transmission is needed between the UE and the 5G base station during the transient state of the 5G auxiliary cell connection, and reestablishing RRC connection for the UE according to the RRC context configuration information.
Here, during the transient state of the 5G secondary cell connection, when data transmission is needed, the 5G secondary cell directly reestablishes the RRC connection for the UE according to the RRC context configuration information reserved before, so that the establishment delay of the RRC connection can be reduced, and the data transmission efficiency can be effectively improved.
Preferably, in order to timely release the corresponding connection resources when the channel quality of the 5G secondary cell cannot be measured, to avoid resource waste, in an embodiment, the method may further include:
and when the UE cannot measure the channel quality of the 5G auxiliary cell, triggering and releasing related resources of the 5G auxiliary cell connection, stopping measuring the channel quality of the 5G auxiliary cell in real time and exiting the dual connection.
In one embodiment, the triggering of releasing the related resources of the 5G secondary cell connection, stopping real-time measurement of the channel quality of the 5G secondary cell, and exiting the dual connection may be implemented by the following specific steps:
and step x1, when the UE cannot measure the channel quality of the 5G auxiliary cell, the UE reports the unable measurement to a core network through the 4G main cell.
When the step is concretely realized, when the UE cannot measure the channel quality of the 5G auxiliary cell, the UE reports corresponding measurement state information to the 4G main cell, and the 4G main cell forwards the measurement state information reported by the UE to the core network, and specifically, the measurement state information can be forwarded to the core network through a notification message that the UE needs to exit from dual connection.
And step x2, the core network notifies the 4G main cell to delete the RRC connection established by the 5G auxiliary cell for the UE according to the report.
Step x3, the 4G main cell triggers the 5G auxiliary cell to delete the relevant information of the corresponding RRC connection according to the notification, and triggers the UE to stop measuring the channel quality of the 5G auxiliary cell; and then, the 4G main cell deletes the double connection information of the local UE and informs the core network that the UE has exited the double connection.
In this step, after the 4G primary cell receives the notification of "deleting the RRC connection established by the 5G secondary cell for the UE" of the core network, the 4G primary cell will notify the 5G secondary cell of deleting relevant information of the corresponding RRC connection, because the deletion of the RRC connection of the current 5G secondary cell is triggered by the UE failing to measure the channel quality of the 5G secondary cell, the 5G secondary cell deletes all relevant information of the corresponding RRC connection according to the notification, so as to achieve the purpose of completely releasing the connection resources of the 5G secondary cell, specifically: when the 5G secondary cell connection is in a transient state, the 5G secondary cell only keeps the corresponding context configuration information, and the context configuration information is deleted at the moment, and when the 5G secondary cell connection is in a non-transient state, the 5G secondary cell has the corresponding context configuration information and the context information, so that the context configuration information and the context information need to be deleted.
Correspondingly, because the current UE cannot measure the channel quality of the 5G auxiliary cell, the UE can also be triggered to stop measuring the channel quality of the 5G auxiliary cell so as to save the power consumption of the UE.
In the above step, after informing the 5G secondary cell to delete the relevant information of the corresponding RRC connection and informing the UE to stop measuring the channel quality of the 5G secondary cell, the 4G primary cell needs to delete the corresponding dual connection information on the network side, that is, the 4G primary cell needs to delete the local dual connection information of the UE and informs the core network that the UE has been out of dual connection, so that the core network also deletes the corresponding dual connection information.
And step x4, the core network deletes the double connection information of the UE in the core network according to the notification that the UE has exited the double connection.
Fig. 3 is a schematic diagram of a specific example of terminal signal measurement implemented according to an embodiment of the present application. As shown in fig. 3, when the 5G secondary cell detects that there is no data transmission with the UE for a duration preset, only the RRC context established by the 5G secondary cell for the UE is deleted, and the corresponding RRC context configuration information still needs to be reserved, and meanwhile, a connection entering transient state of the 5G secondary cell needs to be set and notified to the UE, and after receiving the notification of the entering transient state, the UE only releases the corresponding RRC context on its own side and does not stop measuring the channel quality of the 5G secondary cell. Therefore, the 5G signal can be monitored when the UE is covered by the 5G signal, the phenomenon that only 4G signals are displayed on the UE when the UE and the 5G auxiliary cell do not transmit data for a long time is avoided, and the terminal can accurately display the current signal coverage condition in the NSA EN-DC mode while the connection resource of the 5G auxiliary cell is released in time.
Corresponding to the method, the application also provides a terminal signal measurement system, which specifically comprises the following steps:
the User Equipment (UE) is used for maintaining double connection with the 4G main cell and the 5G auxiliary cell when the NSA network is successfully accessed or the data is transmitted by the 5G auxiliary cell, and measuring the channel quality of the 4G main cell and the 5G auxiliary cell in real time;
the 5G auxiliary cell is used for deleting the Radio Resource Control (RRC) context established by the 5G auxiliary cell for the UE when no data transmission with the UE is detected for a continuous preset time period, reserving corresponding RRC context configuration information, setting the 5G auxiliary cell to be connected into a transient state and notifying the UE;
and the UE is used for releasing the corresponding RRC context of the local side according to the notification and continuously measuring the channel quality of the 5G auxiliary cell in real time.
And the UE is used for triggering the 5G auxiliary cell connection to exit from the transient state as a data sender when the data transmission is needed between the UE and the 5G base station during the transient state of the 5G auxiliary cell connection, and reestablishing RRC connection for the UE according to the RRC context configuration information.
And the 5G base station is used for triggering the 5G auxiliary cell connection to exit from the transient state as a data sender when the data transmission is needed between the UE and the 5G base station during the transient state of the 5G auxiliary cell connection, and reestablishing RRC connection for the UE according to the RRC context configuration information.
Preferably, the UE is further configured to trigger to release related resources of the 5G secondary cell connection, stop measuring the channel quality of the 5G secondary cell in real time, and exit the dual connection when the channel quality of the 5G secondary cell cannot be measured.
Preferably, the UE is configured to report, when channel quality of the 5G secondary cell cannot be measured, the unable measurement to the core network through the 4G primary cell;
the core network is configured to notify the 4G primary cell to delete the RRC connection established by the 5G secondary cell for the UE according to the reporting;
the 4G primary cell is configured to trigger the 5G secondary cell to delete relevant information of a corresponding RRC connection according to the notification, and trigger the UE to stop measuring channel quality of the 5G secondary cell; then deleting the double connection information of the UE in the 4G main cell, and informing the core network that the UE has exited the double connection;
and the core network is used for deleting the double connection information of the UE in the core network according to the notification that the UE has exited the double connection.
In summary, the above embodiments are only preferred embodiments of the present application, and are not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (6)
1. A terminal signal measurement method, comprising:
in an EUTRA-NR dual-connection networking mode of the non-independent networking NSA, when User Equipment (UE) successfully accesses an NSA network or is transmitting data in a 5G auxiliary cell, the UE is in dual connection with a 4G main cell and the 5G auxiliary cell, and channel quality of the 4G main cell and the 5G auxiliary cell is measured in real time;
when the 5G auxiliary cell detects that no data transmission exists between the 5G auxiliary cell and the UE for a continuous preset time length, deleting a Radio Resource Control (RRC) context established by the 5G auxiliary cell for the UE, reserving corresponding RRC context configuration information, setting the 5G auxiliary cell to be connected into a transient state and notifying the UE;
the UE releases the corresponding RRC context of the local side according to the notification, and continuously measures the channel quality of the 5G auxiliary cell in real time;
and triggering the 5G auxiliary cell connection to exit from the transient state if data transmission is needed between the UE and the 5G base station during the transient state of the 5G auxiliary cell connection, and reestablishing RRC connection for the UE according to the RRC context configuration information.
2. The method according to claim 1, wherein the method further comprises:
and when the UE cannot measure the channel quality of the 5G auxiliary cell, triggering and releasing related resources of the 5G auxiliary cell connection, stopping measuring the channel quality of the 5G auxiliary cell in real time and exiting the dual connection.
3. The method of claim 2, wherein the triggering release of related resources of the 5G secondary cell connection, stopping real-time measurement of channel quality of the 5G secondary cell, and exiting dual connectivity comprises:
when the UE cannot measure the channel quality of the 5G auxiliary cell, the UE reports the unable measurement to a core network through a 4G main cell;
the core network informs the 4G main cell to delete the RRC connection established by the 5G auxiliary cell for the UE according to the report;
triggering the 5G auxiliary cell to delete relevant information of corresponding RRC connection according to the notification by the 4G main cell, and triggering the UE to stop measuring the channel quality of the 5G auxiliary cell; then, the 4G main cell deletes the double connection information of the local UE and notifies the core network that the UE has exited the double connection;
and deleting the double connection information of the UE in the core network by the core network according to the notification that the UE has exited the double connection.
4. A terminal signal measurement system, comprising:
the User Equipment (UE) is used for keeping double connection with the 4G main cell and the 5G auxiliary cell when the data is successfully accessed into the non-independent networking NSA network or is being transmitted by the 5G auxiliary cell in the EUTRA-NR double connection networking mode of the non-independent networking NSA, and measuring the channel quality of the 4G main cell and the 5G auxiliary cell in real time;
the 5G auxiliary cell is used for deleting the Radio Resource Control (RRC) context established by the 5G auxiliary cell for the UE when no data transmission with the UE is detected for a continuous preset time period, reserving corresponding RRC context configuration information, setting the 5G auxiliary cell to be connected into a transient state and notifying the UE;
the UE is used for releasing the corresponding RRC context of the local side according to the notification and continuously measuring the channel quality of the 5G auxiliary cell in real time;
the UE is configured to trigger, as a data sender, the 5G secondary cell connection to exit from a transient state when data needs to be transmitted between the UE and a 5G base station during the transient state of the 5G secondary cell connection, and reestablish RRC connection for the UE according to the RRC context configuration information;
the 5G base station is configured to trigger, as a data sender, the 5G secondary cell connection to exit from a transient state when data transmission is required between the UE and the 5G base station during the transient state of the 5G secondary cell connection, and reestablish RRC connection for the UE according to the RRC context configuration information.
5. The system of claim 4, wherein the system further comprises a controller configured to control the controller,
the UE is further used for triggering and releasing related resources of the 5G auxiliary cell connection, stopping measuring the channel quality of the 5G auxiliary cell in real time and exiting the dual connection when the channel quality of the 5G auxiliary cell cannot be measured.
6. The system of claim 5, wherein the system further comprises a controller configured to control the controller,
the UE is used for reporting the non-measurement to a core network through a 4G main cell when the channel quality of the 5G auxiliary cell cannot be measured;
the core network is configured to notify the 4G primary cell to delete the RRC connection established by the 5G secondary cell for the UE according to the reporting;
the 4G primary cell is configured to trigger the 5G secondary cell to delete relevant information of a corresponding RRC connection according to the notification, and trigger the UE to stop measuring channel quality of the 5G secondary cell; then deleting the double connection information of the UE in the 4G main cell, and informing the core network that the UE has exited the double connection;
and the core network is used for deleting the double connection information of the UE in the core network according to the notification that the UE has exited the double connection.
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