CN112042226A - Base station switching method, equipment and storage medium - Google Patents
Base station switching method, equipment and storage medium Download PDFInfo
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- H—ELECTRICITY
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- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
Abstract
The embodiment of the application provides a method, equipment and a storage medium for switching base stations, in the method, UE receives a switching command sent by a source base station accessed currently, the switching command comprises information used for indicating a first target base station, then whether the source base station meets a first condition is detected, if yes, connection is established with the first target base station, the first condition is a condition used for judging service quality of the source base station, when the source base station meets the switching condition, the source base station is directly switched to the target base station, switching is not needed to be carried out until the target base station meets a configured condition, and the problems of connection interruption and the like caused by poor channel quality of the source base station are avoided.
Description
Embodiments of the present disclosure relate to communications technologies, and in particular, to a method, a device, and a storage medium for switching a base station.
In a third Generation Partnership Project (3 GPP) RAN2#104 conference, RAN2 agreed to conditional handover for mobility enhancements. Conditional handover refers to the need to frequently switch different access base stations for some special scenarios, such as high-speed movement of User Equipment (UE) or high-frequency conditions, for example: a high-speed rail scene.
At present, the specific mode of switching the accessed base station by the UE is realized based on the target base station, and the problem of data connection interruption may occur before switching.
Disclosure of Invention
Embodiments of the present application provide a method, an apparatus, and a storage medium for switching a base station, so as to avoid problems such as connection interruption caused by poor channel quality of a source base station.
In a first aspect, an embodiment of the present application may provide a method for switching a base station, where the method is applied to a UE, and the method includes:
receiving a switching command sent by a source base station accessed currently, wherein the switching command comprises information used for indicating a first target base station;
detecting whether the source base station meets a first condition, wherein the first condition is a condition for judging the service quality of the source base station;
and if the source base station meets the first condition, establishing connection with the first target base station.
In a second aspect, an embodiment of the present application may provide a method for handover of a base station, where the method is applied to a network device, and the method includes:
configuring a first target base station to be switched for UE;
and sending a handover command to the UE, wherein the handover command comprises information used for indicating the first target base station and a first condition, and the first condition is a condition used for judging the service quality of the source base station.
In a third aspect, an embodiment of the present application may provide a user equipment, including:
a receiving module, configured to receive a handover command sent by a currently accessed source base station, where the handover command includes information used to indicate a first target base station;
a processing module, configured to detect whether the source base station meets a first condition, where the first condition is a condition that is obtained in advance and used to determine quality of service of the source base station;
and the sending module is used for establishing connection with the first target base station if the source base station meets a first condition.
In a fourth aspect, an embodiment of the present application may provide a network device, including:
the processing module is used for configuring a first target base station to be switched for User Equipment (UE);
a sending module, configured to send a handover command to the UE, where the handover command includes information used to indicate the first target base station and a first condition, and the first condition is a condition used to determine quality of service of the source base station.
In a fifth aspect, an embodiment of the present application may provide a user equipment, including:
an interface for the processor, memory, receiver, transmitter to communicate with the network device;
the memory stores computer-executable instructions;
the processor executes the computer-executable instructions stored by the memory, causing the processor to perform the handover method of the base station of the first aspect.
Alternatively, the processor may be a chip.
In a sixth aspect, an embodiment of the present application may provide a network device, including:
an interface for the processor, memory, transmitter and user equipment to communicate;
the memory stores computer-executable instructions;
the processor executes the computer-executable instructions stored by the memory, causing the processor to perform the handover method of the base station of the second aspect.
Alternatively, the processor may be a chip.
In a seventh aspect, an embodiment of the present application may provide a computer-readable storage medium, where the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, the computer-readable storage medium is configured to implement the handover method of the base station according to the second aspect.
In an eighth aspect, embodiments of the present application may provide a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, the computer-readable storage medium is used to implement the handover method of the base station according to the second aspect.
In a ninth aspect, an embodiment of the present application provides a program, which when executed by a processor, is configured to perform the handover method of the base station according to the first aspect.
In a tenth aspect, an embodiment of the present application provides a program, which when executed by a processor, is configured to perform the handover method of the base station according to the second aspect.
In an eleventh aspect, the present application provides a computer program product, which includes program instructions for implementing the handover method of the base station according to the first aspect.
In a twelfth aspect, an embodiment of the present application provides a computer program product, which includes program instructions for implementing the handover method of the base station according to the second aspect.
In a thirteenth aspect, an embodiment of the present application provides a chip, including: a processing module and a communication interface, the processing module being capable of performing the method for handover of a base station according to the first aspect.
Further, the chip further includes a storage module (e.g., a memory), the storage module is configured to store instructions, the processing module is configured to execute the instructions stored by the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the handover method of the base station according to the first aspect.
In a fourteenth aspect, an embodiment of the present application provides a chip, including: a processing module and a communication interface, the processing module being capable of performing the handover method of the base station according to the second aspect.
Further, the chip further includes a storage module (e.g., a memory) for storing instructions, the processing module is configured to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the handover method of the base station according to the second aspect.
According to the base station switching method, the base station switching device and the base station switching storage medium, the UE receives a switching command sent by a currently accessed source base station, the switching command comprises information used for indicating a first target base station, whether the source base station meets a first condition is detected, if the source base station meets the first condition, connection is established with the first target base station, the first condition is a condition used for judging service quality of the source base station, when the source base station meets the condition, the UE is directly switched to the target base station, switching is not needed to be carried out until the target base station meets a configured condition, and the problems of connection interruption and the like caused by poor channel quality of the source base station are avoided.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a communication system to which an embodiment of the present application is applied;
fig. 2 is a schematic flowchart of an access base station handover method provided in the present application;
fig. 3 is a schematic flowchart of a first embodiment of a base station handover method provided in the present application;
fig. 4 is a schematic structural diagram of a first embodiment of a user equipment provided in the present application;
fig. 5 is a schematic structural diagram of a first network device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a second embodiment of a user equipment provided in the present application;
fig. 7 is a schematic structural diagram of a second network device according to an embodiment of the present application.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," and the like in the description and in the claims, and in the drawings, of the embodiments of the application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic diagram of a communication system applied in the embodiment of the present application. As shown in fig. 1, the communication system includes a User Equipment (UE) and a network device. It is understood that in an actual communication system, there may be one or more of the UE, the network device, and fig. 1 only takes one UE as an example.
The network device may be an access device in a cellular network, for example, may be an access device in an LTE network and its evolved network, for example: in fig. 1, an evolved Node B (eNB or eNodeB) is taken as an example, the Access device may also be a relay station, an Access Point (AP) in a WLAN, or other devices,
user equipment UE includes an access terminal, subscriber unit, subscriber station, mobile, user terminal, wireless communication device, user agent, or user device, among other devices. May be a smart phone, a cellular phone, a cordless phone, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capability or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, etc.
In the scenario shown in fig. 1, in an application process of a UE, for some special scenarios, for example, when the UE is in a vehicle moving at a high speed or under a high-frequency condition, the UE needs to frequently switch different access devices, which are also referred to as access points, access network devices, and the like, the base station is used as the base station to which the UE needs to frequently switch access. Fig. 2 is a schematic flowchart of a method for switching access base stations according to the present application, and as shown in fig. 2, a process of switching a UE from a source base station to a target base station mainly includes:
the UE measures channels and the like of a source base station, reports a corresponding measurement report, carries out interactive negotiation with other serving base stations by the source base station (source eNB), determines a target base station which can be switched by the UE, and then sends the target base station to the UE through a HO command, wherein the HO command at least comprises the target base station (namely the target eNB in the figure) and a switching condition for switching to the target base station, the condition is mainly specific to the target base station, namely, the UE detects parameters such as channel quality and the like of the target base station after receiving the HO command, determines whether the switching condition is met, and if the switching condition is met, the UE initiates an access process to the target base station and switches from the source base station to the target base station.
Then, in the scheme, the handover condition configured for the UE is only for the target base station, that is, a certain target base station meets the handover condition, the UE initiates access based on the received HO command, and then in a specific application process, there are problems that the channel strength of the target base station does not reach the configured condition, but the channel quality of the source base station is already low, which causes the transmission quality of the UE to decrease, even the link fails, and the like.
The following describes a handover method of the base station by using a specific embodiment.
Fig. 3 is a flowchart illustrating a first embodiment of a base station handover method provided in the present application, and as shown in fig. 3, the base station handover method specifically includes the following steps:
s101: and configuring a first target base station to be switched for the UE.
In this embodiment, a base station currently accessed by the UE, that is, a source base station, may configure a target base station to be switched for the UE according to at least one of information such as a measurement result reported by the UE, a movement track of the UE, or a location of the UE, where the source base station determines the movement track of the UE in advance, and may obtain a base station that the UE can provide service when moving to a corresponding location, where the source base station performs an interactive negotiation with other base stations that can provide service for the UE, obtains corresponding access configuration information, determines whether the UE can provide access service, and determines a next target base station to be switched for the UE after the negotiation is completed, that is, the first target base station.
Optionally, in a specific implementation manner, the source base station may determine a plurality of target base stations for the UE, where the plurality of target base stations includes the first target base station.
In a specific implementation of the scheme, it should be understood that the process may also be performed by a core network device or other network access devices, and the scheme is not limited thereto.
S102: receiving a switching command sent by a source base station accessed currently, wherein the switching command comprises information used for indicating a first target base station.
In this embodiment, after determining the first target for the UE, the source base station or other network equipment needs to send the first target base station to the UE through a handover command, where the handover command refers to a conditional handover, that is, a conditional handover. Generally, information for indicating the first target base station may be carried in the handover command, for example: the identity of the first target base station, etc.
Optionally, the handover command may also carry a condition in the conditional handover process, that is, a condition for defining the channel quality of the source base station, which is hereinafter referred to as a first condition. In the first condition, a certain condition is set for the service quality of the source base station, and if the UE detects that the service quality of the source base station meets the condition, the UE is triggered to establish connection with the first target base station. In a specific implementation of the solution, it should be understood that establishing, by the UE, a connection with the first target base station includes: the UE is switched from the source base station to the first target base station, namely the UE is disconnected with the source base station and is connected with the first target base station; or the UE continues to connect with the source base station while establishing a connection with the first target base station.
In a specific implementation of the scheme, if the received handover command includes multiple target base stations, the UE needs to determine the first target base station from the multiple target base stations, and generally, the UE may randomly select or select one of the multiple target base stations as the first target base station according to a preset rule. For example: according to the service quality of each target base station, a base station with better service quality is determined to be used as a first target base station, specifically, the first target base station is any one of the at least one target base station, or the first target base station is a base station with the best service quality in the at least one target base station, and the service quality may be embodied by parameters such as channel quality, and the like, and the scheme is not limited.
S103: whether the source base station meets a first condition is detected.
In this scheme, the first condition is a condition that is acquired in advance and used for determining the quality of service of the source base station.
In this embodiment, after receiving the handover command, the UE needs to detect the source base station, and determine some parameters capable of indicating the service quality of the source base station, so as to determine whether the source base station can continue to provide services for the UE, and after detecting the parameter of the service quality of the currently accessed source base station, the UE needs to determine whether the source base station meets a first condition according to a first condition obtained in advance, and if so, triggers the UE to establish a connection with the first target base station. In this scheme, generally, the first condition is used to define a minimum standard capable of providing a service for the UE continuously, for example, a threshold of channel quality may be set, and if the first channel quality of the source base station is lower than the threshold (in this scheme, the first channel quality represents the channel quality of the source base station, and the second channel quality represents the channel quality of the first target base station), the UE may be accessed to the first target base station in advance, or the UE may be a defined condition of other parameters such as the number of retransmissions, without limitation, in this scheme, regardless of whether the UE satisfies the condition of accessing the first target base station.
In one particular implementation, the first condition includes any one or more of the following conditions:
first channel quality of the source base station is below a first threshold.
According to the scheme, the UE needs to detect whether the first channel quality of the source base station is smaller than a preset first threshold, wherein the first threshold is a configured value, and the value is generally the lowest limit capable of continuously providing service for the UE. Optionally, the first threshold may also be a value determined according to the second channel quality of the first target base station, for example: the second channel quality of the first target base station may be taken as the first threshold. The meaning of the scheme is that a base station with better channel quality is selected from a source base station and a first target base station to provide service for the UE, and the accuracy and efficiency of data transmission of the UE can be improved as long as the channel quality of a new first target base station is better than that of the source base station. In this scheme, the UE needs to detect the second channel quality of the first target base station, and can compare the second channel quality with the first channel quality to determine whether the first condition is satisfied, so that the UE needs to acquire the second channel quality of the first target base station.
In the scheme, the UE may detect a currently accessed source base station to obtain a first channel Quality of the source base station, where the first channel Quality may be one or more of Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), Reference Signal-to-Interference plus Noise Ratio (RS-SINR), or other parameters used for expressing channel Quality, and a unit of the parameter expressing channel Quality may be dB or dBm. Similarly, the second channel quality may be one or more of RSRP, RSRQ, and RS-SINR of the first target base station, and may also be other parameters used for expressing channel quality, and the unit may be dB or dBm, which is not limited in this scheme.
In a specific implementation manner, generally, the UE does not continuously detect the channel quality of the source base station, but may perform the acquisition of the first channel quality under a certain condition, and may configure a channel quality detection condition in the UE, or configure the channel quality detection condition for the UE by the network side, and the UE performs the acquisition of the first channel quality after detecting that the channel quality detection condition is met, specifically, the channel quality detection condition may include at least any one or more of the following conditions:
(1) the number of times of the out-of-step indication received by the source base station exceeds a preset first number of times.
The out-of-synchronization indication means that the UE detects that the UE cannot synchronize with the source base station, and may send an indication indicating that the UE cannot synchronize with the source base station, i.e., an out-of-sync indication, to the source base station. After the number of times that the source base station continuously receives the out-of-synchronization indication exceeds the preset number of times, it is proved that the UE and the source base station cannot be synchronized, and data transmission errors and other problems are easily caused.
(2) A timer for detecting the channel quality of the source base station is overtime; the meaning of the scheme is that a timer is set in the UE in advance, the channel quality of the source base station is detected according to a certain time interval, and the first channel quality of the source base station is obtained after the timer starts to time and reaches the set time, namely the timer is overtime.
(3) And the Radio Link Control (RLC) retransmission times of the source base station reach a preset second time. The RLC layer mainly functions to provide segmentation and retransmission services for users and control data, and reduce the problem of transmission errors, however, when the number of retransmissions is too many, it indicates that a link is in a problem or the reliability is low, so a certain number of retransmissions, that is, the second number, can be set, and if the number of RLC retransmissions reaches the second number, the UE obtains the first channel quality of the currently accessed source base station, and determines whether to switch to the target base station in advance.
(4) The source base station has a Radio Link Failure (RLF). In general, the main causes of RLF are the following: wireless network interference cause; cell alarm, equipment problem; a terminal problem; handover failure caused by reasons such as neighbor missing; weak coverage of a wireless network; cell base stations are not synchronized; the target cell is fully loaded. Besides the problem of the UE itself, other reasons indicate that the service quality of the currently accessed source base station is degraded, and then the UE may detect the first channel quality of the source base station to determine whether the first target base station can be accessed in advance.
The detection of the first channel quality according to a certain condition or time detection can also reduce the power consumption of the UE.
And (II) the number of times of the out-of-step indication received by the source base station exceeds a preset first number of times, which means that the UE detects that the UE cannot be synchronized with the source base station and can send out-of-step indication, namely out-of-sync indication, to the source base station.
(III) the timer for detecting the channel quality of the source base station is overtime; the meaning of the scheme is that a timer is set in the UE in advance, the channel quality of the source base station is detected according to a certain time interval, and the first target base station is accessed after the timer starts to time and reaches the set time, namely the timer is overtime.
And (IV) the RLC retransmission times of the source base station reach a preset second time. The RLC layer mainly functions to provide segmentation and retransmission services for users and control data, and reduce the problem of transmission errors, however, when the number of retransmissions is too many, it indicates that a link is problematic or the reliability is low, so a certain number of retransmissions, that is, the second number, can be set, and if the number of RLC retransmissions reaches the second number, the UE can be switched to the first target base station in advance.
And (V) RLF occurs at the source base station. In general, the main causes of RLF are the following: wireless network interference cause; cell alarm, equipment problem; a terminal problem; handover failure caused by reasons such as neighbor missing; weak coverage of a wireless network; cell base stations are not synchronized; the target cell is fully loaded. Besides the problem of the UE itself, other reasons all indicate that the service quality of the currently accessed source base station is degraded, and the UE can access the first target base station in advance.
S104: and if the source base station meets the first condition, establishing a connection request with the first target base station.
In this step, the UE detects a currently accessed source base station, and determines to switch the UE to the first target base station after determining that the source base station satisfies a first condition, specifically, if the source base station is resource information of the first target base station configured for the UE, the connection may be directly established, otherwise, the UE may initiate an access procedure to the first target base station, complete the access procedure, and establish a connection with the first target base station.
In a specific implementation of the scheme, the first condition may be carried in a handover command configured for the UE. Optionally, the first condition may also be configured to the UE through a system message or an RRC signaling, that is, the first condition is carried in the system message or the RRC signaling and sent to the UE, which is not limited in this scheme.
Optionally, in a specific implementation of the scheme, the UE determines whether the source base station meets the first condition, and also determines whether the first target base station meets a requirement of a service that can be provided for the UE, and specifically, the UE needs to obtain a second channel quality of the first target base station. Correspondingly, the step can be specifically realized as follows: the source base station meets a first condition, and if the second channel quality is greater than a second threshold value, connection is established with a first target base station; wherein the second threshold is a preset value or a value determined according to the first channel quality, and in a specific implementation, the second threshold may be a sum of the first channel quality and a set value; the set value is greater than or equal to 0dB, for example: 3dB, 6dB, etc.
In the method for switching base stations provided in this embodiment, a UE receives a switching command sent by a currently accessed source base station, where the switching command includes information indicating a first target base station, and then detects whether the source base station satisfies a first condition acquired in advance, if the source base station satisfies the first condition, a connection is established with the first target base station, where the first condition is a condition acquired in advance and used for limiting service quality of the source base station, and when the source base station satisfies the switching condition, the UE directly switches to the target base station without waiting until the target base station reaches a configured condition, so as to avoid problems such as connection interruption caused by poor channel quality of the source base station.
On the basis of the foregoing embodiment, if the UE establishes a connection with the first target base station successfully, the reason for accessing the first target base station may be reported to the first target base station or other devices (e.g., core network devices and the like) on the network side, for example: the reason may include that the channel quality of the source base station is lower than a set first threshold, and the first target station may instruct the source base station to perform data forwarding after receiving the reason.
If the connection between the UE and the first target base station fails to be established, the UE may initiate connection reestablishment, establish connection with the network side again, and connect to the first target base station, or the source base station or another base station after reestablishment, which is not limited in this scheme. For example: an RRC reestablishment message may be sent to the first target base station, i.e. it initiates an RRC connection reestablishment to access the first target base station.
After the connection between the UE and the first target base station fails to be established, connection reestablishment may not be initiated.
In the above scheme, after the source base station satisfies the first condition, it is temporarily not considered whether the service quality of the first target base station satisfies its corresponding second condition, that is, the second condition is ignored after the first condition is satisfied.
In another implementation manner of the scheme, the UE may further obtain a second condition, specifically, the source base station may configure the second condition through the handover command, where the second condition is used to define the service quality of the first target base station, that is, is used to determine whether the first target base station meets the handover condition, for example, a condition such as a threshold of a second channel quality of the first target base station may be configured in the second condition.
Optionally, the second condition may also be configured in other manners, such as system broadcast message or RRC signaling, which is similar to the configuration of the first condition and is not described herein again.
On the basis of the scheme provided by each of the above embodiments, it can be seen that the handover method of the base station provided by the present application at least includes the following scenario: the UE receives the HO command of the conditional handover, the service quality of the source base station continuously decreases to a certain extent, but the current first target base station does not satisfy the configured second condition yet, but the service quality of the first target base station is better than that of the source base station, in this case, to avoid the source base station RLF initiating RRC connection reestablishment, the UE may access the target base station in advance.
However, in a specific application process of the scheme, when the UE receives an HO command of a conditional handover, and the UE does not meet the configured second condition all the time during the validity period of the configured RA resource, in this case, the UE may report the source base station, where the source base station reselects the target base station to initiate a handover request or start measurement again. There is also a possibility that the UE can only initiate RRC connection re-establishment when the channel quality of both the source base station and the target base station is not good.
Optionally, the UE may also determine whether to establish a connection with the first target base station in combination with the first condition and the second condition, specifically, if the source base station meets the first condition and the first target base station meets the second condition, the UE establishes a connection with the first target base station.
The base station switching method avoids the situation that when the conditional handover is configured, the UE is not switched to the target base station, but the channel quality of the source base station is relatively poor, so that RLF is caused, and meanwhile, the success probability of switching is increased.
The handover method of the base station provided in the embodiment of the present application is described in detail above, and the user equipment and the network equipment provided in the embodiment of the present application are described below.
Fig. 4 is a schematic structural diagram of a first embodiment of a user equipment provided in the present application. As shown in fig. 4, the user equipment 10 includes:
a receiving module 11, configured to receive a handover command sent by a currently accessed source base station, where the handover command includes information used to indicate a first target base station;
a processing module 12, configured to detect whether the source base station meets a first condition, where the first condition is a condition that is obtained in advance and used to determine quality of service of the source base station;
a sending module 13, configured to establish a connection with the first target base station if the source base station meets a first condition.
The UE provided in this embodiment is configured to execute the technical solution on the UE side in any of the foregoing method embodiments, and the implementation principle and technical effect are similar, where the UE receives a handover command sent by a currently accessed source base station, where the handover command includes information for indicating a first target base station, and then detects whether the source base station meets a first condition, if so, the UE establishes a connection with the first target base station, that is, accesses the first target base station, and when the source base station meets the handover condition, the UE directly switches to the target base station, and does not need to wait until the target base station meets the configured condition to perform the handover, thereby avoiding problems such as connection interruption caused by poor channel quality of the source base station.
On the basis of the above embodiment, the first condition includes any one of the following conditions:
a first channel quality of the source base station is lower than a first threshold, and the first threshold is a configured value or a value determined according to a second channel quality of the first target base station;
the number of times of the out-of-step indication received by the source base station exceeds a preset first number of times;
a timer for detecting the channel quality of the source base station is overtime;
the RLC retransmission times of the source base station reach a preset second time;
the source base station generates RLF.
In a specific embodiment, the first condition includes that the first channel quality is lower than a first threshold, and the processing module 12 is specifically configured to:
acquiring first channel quality of the source base station when the condition of channel quality detection is met;
wherein the channel quality detection condition comprises any one of the following conditions:
the number of times of the out-of-step indication received by the source base station exceeds a preset first number of times;
a timer for detecting the channel quality of the source base station is overtime;
the RLC retransmission times of the source base station reach a preset second time;
the source base station generates RLF.
Optionally, the handover command further includes the first condition.
Optionally, the receiving module 11 is further configured to:
receiving a system message; the system message carries the first condition;
alternatively, the first and second electrodes may be,
and receiving Radio Resource Control (RRC) signaling, wherein the RRC signaling carries the first condition.
Optionally, the sending module 13 is further configured to:
and if the connection with the first target base station is successfully established, sending a reason for accessing the first target base station to the first target base station, or sending a reason for accessing the first target base station to core network equipment.
On the basis of any of the above embodiments, the sending module 13 is further configured to:
and if the connection establishment with the first target base station fails, initiating connection reestablishment.
Optionally, the first channel quality includes at least one of RSRP, RSRQ, and RS-SINR.
Optionally, the processing module 12 is further configured to:
obtaining the second channel quality of the first target base station;
optionally, the sending module 13 is specifically configured to:
the source base station meets a first condition, and if the second channel quality is greater than a second threshold value, connection is established with the first target base station; wherein the second threshold is a preset value or a value determined according to the first channel quality.
Optionally, the second threshold is a sum of the first channel quality and a set value; the set value is greater than or equal to 0 dB.
Optionally, the receiving module 11 is further configured to:
and acquiring a second condition, wherein the second condition is used for judging the service quality of the first target base station.
Correspondingly, the sending module 13 is specifically configured to:
and if the source base station meets the first condition and the first target base station meets the second condition, establishing connection with the first target base station.
Optionally, the handover command includes:
at least one target base station and a second condition corresponding to each target base station, wherein each second condition is used for judging the channel quality of the corresponding target base station;
the first target base station is any one of the at least one target base station or a base station selected from the at least one target base station according to a preset rule.
The user equipment provided by any implementation manner is configured to execute the technical solution on the U side of any method embodiment, and the implementation principle and the technical effect are similar, and are not described herein again.
Fig. 5 is a schematic structural diagram of a network device according to a first embodiment of the present application. As shown in fig. 5, the network device 20 includes:
a processing module 21, configured to configure a first target base station to be switched for the UE;
a sending module 22, configured to send a handover command to the UE, where the handover command includes information used to indicate the first target base station and a first condition, and the first condition is a condition used to determine quality of service of the source base station.
Optionally, the first condition includes any one of the following conditions:
a first channel quality of the source base station is lower than a first threshold, and the first threshold is a configured value or a second channel quality of the first target base station;
the number of times of the out-of-step indication received by the source base station exceeds a preset first number of times;
a timer for detecting the channel quality of the source base station is overtime;
the RLC retransmission times of the source base station reach a preset second time;
the source base station generates RLF.
Optionally, the network device includes a source base station to which the user currently accesses.
The network device provided in the foregoing embodiment is configured to implement the technical solution at the source base station side in any of the foregoing method embodiments, configure a target base station to be switched for the UE, and simultaneously configure a first condition for switching to the target base station, where the first condition is used to limit a condition of service quality of the source base station, and when the source base station meets the switching condition, the source base station may be directly switched to the target base station, and the switching does not need to be performed until the target base station meets the configured condition, thereby avoiding problems such as connection interruption caused by poor channel quality of the source base station.
Fig. 6 is a schematic structural diagram of a second embodiment of a user equipment provided in the present application. As shown in fig. 6, the user equipment 30 includes:
an interface 35 for communicating with the processor 31, the memory 32, the receiver 33, and the transmitter 34;
the memory 32 stores computer-executable instructions;
the processor 31 executes the computer execution instructions stored in the memory, so that the processor 31 executes the technical solution of the handover method of the base station in any one of the foregoing method embodiments.
Fig. 7 is a schematic structural diagram of a second network device according to an embodiment of the present application. As shown in fig. 7, the network device 40 includes:
a processor 42, a memory 43, an interface 45 for a transmitter 44 to communicate with the user equipment; optionally, the network device 40 further comprises a receiver 41.
The memory 43 stores computer-executable instructions;
the processor 42 executes the computer-executable instructions stored by the memory, so that the processor 42 executes the handover method of the base station on the base station side as in any one of the method embodiments described above.
The present application further provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the computer-readable storage medium is configured to implement the technical solution of the UE in any one of the first foregoing method embodiments.
The present application further provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the computer-readable storage medium is configured to implement a technical solution on the base station side in any of the foregoing method embodiments.
The embodiment of the present application further provides a program, and when the program is executed by a processor, the program is configured to execute the technical solution of the UE in the foregoing method embodiment.
The embodiment of the present application further provides a program, and when the program is executed by a processor, the program is configured to execute the technical solution of the network device (base station) in the foregoing method embodiment.
The embodiment of the present application further provides a computer program product, which includes program instructions, where the program instructions are used to implement the technical scheme of the UE in the foregoing method embodiment.
The embodiment of the present application further provides a computer program product, which includes program instructions, where the program instructions are used to implement the technical solution of the network device (base station) in the foregoing method embodiment.
An embodiment of the present application further provides a chip, including: and the processing module and the communication interface are capable of executing the technical scheme of the UE in the foregoing method embodiment.
Further, the chip further includes a storage module (e.g., a memory), where the storage module is configured to store instructions, and the processing module is configured to execute the instructions stored by the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the UE-side technical solution.
An embodiment of the present application further provides a chip, including: and a processing module and a communication interface, wherein the processing module can execute the technical scheme of the network equipment (base station) in the method embodiment.
Further, the chip further includes a storage module (e.g., a memory), where the storage module is configured to store an instruction, and the processing module is configured to execute the instruction stored in the storage module, and execute the instruction stored in the storage module so that the processing module executes the technical solution on the network device side.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In the above Specific implementation of the user equipment and the network device, it should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose processors, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present application may be embodied directly in a hardware processor, or in a combination of the hardware and software modules in the processor.
All or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The aforementioned program may be stored in a readable memory. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid state disk, magnetic tape, floppy disk, optical disk, and any combination thereof.
Claims (34)
- A method for switching base stations is applied to User Equipment (UE), and comprises the following steps:receiving a switching command sent by a source base station accessed currently, wherein the switching command comprises information used for indicating a first target base station;detecting whether the source base station meets a first condition, wherein the first condition is a condition for judging the service quality of the source base station;and if the source base station meets the first condition, establishing connection with the first target base station.
- The method of claim 1, wherein the first condition comprises any one of:a first channel quality of the source base station is lower than a first threshold, and the first threshold is a configured value or a value determined according to a second channel quality of the first target base station;the number of times of the out-of-step indication received by the source base station exceeds a preset first number of times;a timer for detecting the channel quality of the source base station is overtime;the radio link layer of the source base station controls the RLC retransmission times to reach a preset second time;the source base station experiences radio link failure, RLF.
- The method of claim 2, wherein the first condition comprises the first channel quality being below a first threshold, the method further comprising:acquiring the first channel quality of the source base station when detecting that the channel quality detection condition is met;wherein the channel quality detection condition comprises any one of the following conditions:the number of times of the out-of-step indication received by the source base station exceeds a preset first number of times;a timer for detecting the channel quality of the source base station is overtime;the RLC retransmission times of the source base station reach a preset second time;the source base station generates RLF.
- A method according to any of claims 1 to 3, wherein the handover command further comprises the first condition.
- The method according to any one of claims 1 to 3, further comprising:receiving a system message; the system message carries the first condition;alternatively, the first and second electrodes may be,and receiving Radio Resource Control (RRC) signaling, wherein the RRC signaling carries the first condition.
- The method according to any one of claims 1 to 5, further comprising:and if the connection with the first target base station is successfully established, sending a reason for accessing the first target base station to the first target base station, or sending a reason for accessing the first target base station to core network equipment.
- The method according to any one of claims 1 to 5, further comprising:and if the connection establishment with the first target base station fails, initiating connection reestablishment.
- The method of claim 2 or 3, wherein the first channel quality comprises at least one of reference signal received power, RSRP, reference signal received quality, RSRQ, reference signal to interference plus noise ratio, RS-SINR.
- The method according to any one of claims 1 to 8, further comprising:and acquiring second channel quality of the first target base station.
- The method of claim 9, wherein the establishing the connection with the first target base station if the source base station satisfies a first condition comprises:the source base station meets a first condition, and if the second channel quality is greater than a second threshold value, connection is established with the first target base station; wherein the second threshold is a set value or a value determined according to the first channel quality.
- The method of claim 10, wherein the second threshold is a sum of the first channel quality and a set value; the set value is greater than or equal to 0 dB.
- The method according to any one of claims 1 to 9, further comprising:acquiring a second condition, wherein the second condition is used for judging the service quality of the first target base station;correspondingly, if the source base station meets the first condition, establishing a connection with the first target base station includes:and if the source base station meets the first condition and the first target base station meets the second condition, establishing connection with the first target base station.
- The method according to any of claims 1 to 12, wherein the handover command comprises:the target base station comprises at least one target base station and a second condition corresponding to the target base station, wherein the second condition is used for judging the channel quality of the corresponding target base station;the first target base station is any one of the at least one target base station or a base station selected from the at least one target base station according to a preset rule.
- A method for switching a base station is applied to a network device, and comprises the following steps:configuring a first target base station to be switched for User Equipment (UE);and sending a handover command to the UE, wherein the handover command comprises information used for indicating the first target base station and a first condition, and the first condition is a condition used for judging the service quality of the source base station.
- The method of claim 14, wherein the first condition comprises any one of:a first channel quality of the source base station is lower than a first threshold, and the first threshold is a configured value or a second channel quality of the first target base station;the number of times of the out-of-step indication received by the source base station exceeds a preset first number of times;a timer for detecting the channel quality of the source base station is overtime;the radio link layer of the source base station controls the RLC retransmission times to reach a preset second time;the source base station experiences radio link failure, RLF.
- A user device, comprising:a receiving module, configured to receive a handover command sent by a currently accessed source base station, where the handover command includes information used to indicate a first target base station;a processing module, configured to detect whether the source base station meets a first condition, where the first condition is a condition for determining quality of service of the source base station;a sending module, configured to establish a connection with the first target base station if the source base station meets the first condition.
- The UE of claim 16, wherein the first condition comprises any one of:a first channel quality of the source base station is lower than a first threshold, and the first threshold is a configured value or a second channel quality of the first target base station;the number of times of the out-of-step indication received by the source base station exceeds a preset first number of times;a timer for detecting the channel quality of the source base station is overtime;the radio link layer of the source base station controls the RLC retransmission times to reach a preset second time;the source base station experiences radio link failure, RLF.
- The user equipment of claim 17, wherein the first condition comprises the first channel quality being below a first threshold, and wherein the processing module is further configured to:acquiring the first channel quality of the source base station when detecting that the channel quality detection condition is met;wherein the channel quality detection condition comprises any one of the following conditions:the number of times of the out-of-step indication received by the source base station exceeds a preset first number of times;a timer for detecting the channel quality of the source base station is overtime;the RLC retransmission times of the source base station reach a preset second time;the source base station generates RLF.
- The user equipment according to any of claims 16 to 18, wherein the handover command further comprises the first condition.
- The user equipment according to any of claims 16 to 18, wherein the receiving module is further configured to:receiving a system message; the system message carries the first condition;alternatively, the first and second electrodes may be,and receiving Radio Resource Control (RRC) signaling, wherein the RRC signaling carries the first condition.
- The ue of any one of claims 16 to 20, wherein the sending module is further configured to:and if the connection with the first target base station is successfully established, sending a reason for accessing the first target base station to the first target base station, or sending a reason for accessing the first target base station to core network equipment.
- The ue of any one of claims 16 to 20, wherein the sending module is further configured to:and if the connection establishment with the first target base station fails, initiating connection reestablishment.
- The user equipment according to claim 17 or 18, wherein the first channel quality comprises at least one of reference signal received power, RSRP, reference signal received quality, RSRQ, reference signal to interference plus noise ratio, RS-SINR.
- The user equipment of any one of claims 16 to 23, wherein the processing module is further configured to:and acquiring second channel quality of the first target base station.
- The ue of claim 24, wherein the sending module is specifically configured to:the source base station meets a first condition, and if the second channel quality is greater than a second threshold value, connection is established with the first target base station; wherein the second threshold is a set value or a value determined according to the first channel quality.
- The UE of claim 25, wherein the second threshold is a sum of the first channel quality and a set value; the set value is greater than or equal to 0 dB.
- The user equipment according to any of claims 16 to 24, wherein the receiving module is further configured to:acquiring a second condition, wherein the second condition is used for judging the service quality of the first target base station;correspondingly, the sending module is specifically configured to:and if the source base station meets the first condition and the first target base station meets the second condition, establishing connection with the first target base station.
- The UE of any one of claims 16 to 27, wherein the handover command comprises:at least one target base station and a second condition corresponding to each target base station, wherein each second condition is used for judging the channel quality of the corresponding target base station;the first target base station is any one of the at least one target base station or a base station selected from the at least one target base station according to a preset rule.
- A network device, comprising:the processing module is used for configuring a first target base station to be switched for User Equipment (UE);a sending module, configured to send a handover command to the UE, where the handover command includes information used to indicate the first target base station and a first condition, and the first condition is a condition used to determine quality of service of the source base station.
- The network device of claim 29, wherein the first condition comprises any one of:a first channel quality of the source base station is lower than a first threshold, and the first threshold is a configured value or a second channel quality of the first target base station;the number of times of the out-of-step indication received by the source base station exceeds a preset first number of times;a timer for detecting the channel quality of the source base station is overtime;the radio link layer of the source base station controls the RLC retransmission times to reach a preset second time;the source base station experiences radio link failure, RLF.
- A user device, comprising:an interface for the processor, memory, receiver, transmitter to communicate with the network device;the memory stores computer-executable instructions;the processor executes the computer-executable instructions stored by the memory, causing the processor to perform the method of handover of a base station of any one of claims 1 to 13.
- A network device, comprising:an interface for the processor, memory, transmitter and user equipment to communicate;the memory stores computer-executable instructions;the processor executes the computer-executable instructions stored by the memory, causing the processor to perform the method of handover of a base station of claim 14 or 15.
- A computer-readable storage medium having stored thereon computer-executable instructions for implementing the handover method of a base station according to any one of claims 1 to 13 when executed by a processor.
- A computer-readable storage medium having stored thereon computer-executable instructions for implementing the handover method of a base station according to claim 14 or 15 when the computer-executable instructions are executed by a processor.
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| CN112672374B (en) * | 2020-11-30 | 2022-11-25 | 国网山东省电力公司滨州供电公司 | Electric power data communication state processing system and terminal |
| CN112672390B (en) * | 2020-12-28 | 2023-11-10 | 京信网络系统股份有限公司 | RRC (radio resource control) connection reconfiguration message transmission method, device and communication equipment |
| TWI774313B (en) * | 2021-04-08 | 2022-08-11 | 瑞昱半導體股份有限公司 | Communication device and associated control method |
| CN113438687B (en) * | 2021-06-23 | 2022-10-11 | 中国联合网络通信集团有限公司 | Base station awakening method, device and equipment |
| CN114390516B (en) * | 2022-01-25 | 2022-11-01 | 北京航空航天大学 | Group pre-switching authentication method and device based on trusted relay |
| CN117528775B (en) * | 2024-01-08 | 2024-04-16 | 智慧足迹数据科技有限公司 | Base station position correction method and device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102883361A (en) * | 2011-07-15 | 2013-01-16 | 华为技术有限公司 | Methods and equipment for submitting cell information and adjusting cell mobility parameter |
| CN103826247A (en) * | 2012-11-16 | 2014-05-28 | 普天信息技术研究院有限公司 | Method for monitoring wireless link in heterogeneous network |
| CN103826248A (en) * | 2012-11-16 | 2014-05-28 | 普天信息技术研究院有限公司 | Method for monitoring wireless link in heterogeneous network |
| CN104684034A (en) * | 2013-11-27 | 2015-06-03 | 中兴通讯股份有限公司 | Communication terminal management method and communication system |
| CN108243469A (en) * | 2016-12-23 | 2018-07-03 | 夏普株式会社 | User mobility method and apparatus |
| CN108243468A (en) * | 2016-12-23 | 2018-07-03 | 夏普株式会社 | User mobility method and apparatus |
| US20180279193A1 (en) * | 2017-03-22 | 2018-09-27 | Ofinno Technologies, Llc | Conditional Handover Execution |
| CN108632926A (en) * | 2017-03-24 | 2018-10-09 | 华为技术有限公司 | Communication means, the network equipment and terminal |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102695223B (en) * | 2011-03-25 | 2014-12-10 | 中国移动通信集团公司 | Node switching method, apparatus and associated equipment thereof |
| CN108934049B (en) * | 2017-05-26 | 2021-08-17 | 捷开通讯(深圳)有限公司 | Communication switching method and device |
-
2018
- 2018-12-07 CN CN201880092549.4A patent/CN112042226B/en active Active
- 2018-12-07 WO PCT/CN2018/119897 patent/WO2020113576A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102883361A (en) * | 2011-07-15 | 2013-01-16 | 华为技术有限公司 | Methods and equipment for submitting cell information and adjusting cell mobility parameter |
| CN103826247A (en) * | 2012-11-16 | 2014-05-28 | 普天信息技术研究院有限公司 | Method for monitoring wireless link in heterogeneous network |
| CN103826248A (en) * | 2012-11-16 | 2014-05-28 | 普天信息技术研究院有限公司 | Method for monitoring wireless link in heterogeneous network |
| CN104684034A (en) * | 2013-11-27 | 2015-06-03 | 中兴通讯股份有限公司 | Communication terminal management method and communication system |
| CN108243469A (en) * | 2016-12-23 | 2018-07-03 | 夏普株式会社 | User mobility method and apparatus |
| CN108243468A (en) * | 2016-12-23 | 2018-07-03 | 夏普株式会社 | User mobility method and apparatus |
| US20180279193A1 (en) * | 2017-03-22 | 2018-09-27 | Ofinno Technologies, Llc | Conditional Handover Execution |
| CN108632926A (en) * | 2017-03-24 | 2018-10-09 | 华为技术有限公司 | Communication means, the network equipment and terminal |
Non-Patent Citations (4)
| Title |
|---|
| MEDIATEK INC.: "R2-1816959 "Conditional Handover Procedures"", 《3GPP TSG-RAN WG2 MEETING #104 R2-1816959》 * |
| NOKIA等: "R2-1817686 "Baseline of Conditional Handover and its optional enhancements"", 《3GPP TSG-RAN WG2 MEETING #104 R2-1817686》 * |
| SAMSUNG: "Introduction of Conditional handover", 《3GPP TSG-RAN2 AH - 1801 R2-1801493》 * |
| SAMSUNG: "Introduction of Conditional handover", 《3GPP TSG-RAN2#101 R2-1802486》 * |
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