CN111556517A - Method and device for processing abnormal link - Google Patents
Method and device for processing abnormal link Download PDFInfo
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- CN111556517A CN111556517A CN202010348571.XA CN202010348571A CN111556517A CN 111556517 A CN111556517 A CN 111556517A CN 202010348571 A CN202010348571 A CN 202010348571A CN 111556517 A CN111556517 A CN 111556517A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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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
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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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
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
- H04W36/305—Handover due to radio link failure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The embodiment of the application provides a method and equipment for processing an abnormal link, wherein UE continuously sends N data packets of specified types; when the UE continuously sends N data packets of specified types and does not receive response information of any data packet in the N data packets, determining that an abnormal link exists; and the UE is switched from the source cell to the target cell according to the current access state. According to the embodiment of the application, whether an abnormal link exists is determined by recording the sending times and the response data of the data packet of the specified type, the link between the base station and the gateway can be effectively detected to be abnormal, the link can be timely recovered by switching the UE from the source cell to the target cell, and the problem that the communication service of the UE side is abnormal can be effectively avoided.
Description
Technical Field
The embodiment of the application relates to the technical field of communication, in particular to a method and equipment for processing an abnormal link.
Background
A wireless communication system is a complex system, and includes an air interface link between a User Equipment (UE) and a base station, a link between the base station and a gateway, and a link between the gateway and an external network. The abnormal condition of any link can affect the service use of the user.
For the UE, most of the abnormal links can be detected, and the abnormal links can be recovered as soon as possible, so that the communication service of the UE is ensured not to have problems. However, there are still some scenarios in which the UE cannot detect an abnormal link, for example, an abnormality occurs in the link between the base station and the gateway.
Since the UE cannot detect the link between the base station and the gateway, the UE cannot recover the abnormal link as soon as possible, which further causes the communication service at the UE side to be abnormal.
Disclosure of Invention
The embodiment of the application provides a method and equipment for processing an abnormal link, which can solve the technical problem that in the prior art, UE cannot detect that the link between a base station and a gateway is abnormal, so that the communication service of a UE side is abnormal.
In a first aspect, an embodiment of the present application provides a method for processing an abnormal link, where the method includes:
UE continuously sends N data packets of specified types;
when the UE continuously sends N data packets of specified types and does not receive response information of any data packet in the N data packets, determining that an abnormal link exists;
and the UE is switched from the source cell to the target cell according to the current access state.
In one possible design, the switching, by the UE, from the source cell to the target cell according to the current access state includes:
and when the access state is a connection state, the UE adjusts the measured signal quality of the target cell and/or the source cell to trigger network equipment to switch the UE from the source cell to the target cell, wherein the target cell is a serving cell with the strongest signal quality except the source cell.
In a possible design, the adjusting, by the UE, the measured signal quality of the target cell and/or the source cell includes:
and the UE increases the signal quality of the target cell and/or decreases the signal quality of the source cell, so that the adjusted signal quality of the target cell is stronger than that of the source cell.
In one possible design, the switching, by the UE, from the source cell to the target cell according to the current access state includes:
and when the access state is a connection state, the UE executes RRC connection reestablishment on the target cell.
In one possible design, the switching, by the UE, from the source cell to the target cell according to the current access state includes:
and when the access state is an idle state, the UE triggers the reselection of the target cell and accesses the target cell.
In one possible embodiment, the method further comprises:
and after the UE is switched from the source cell to the target cell, adding an abnormal identifier to the source cell, wherein the abnormal identifier is used for preventing the UE from being switched back to the source cell.
In one possible embodiment, the method further comprises:
when the UE is not successfully switched to the target cell and other target cells meeting preset conditions exist, the UE executes switching operation of switching from a source cell to the other target cells meeting the preset conditions according to the current access state;
if the switching operation fails, recording the continuous failure times of the switching operation;
when the number of the continuous failures is greater than or equal to a preset value, or the UE has performed the handover operation in the other target cells satisfying the preset condition, if the abnormal link is not recovered yet, the UE performs release and reactivation of a Packet Data Protocol (PDP)/Packet Data Network (PDN) connection, or performs an in-and-out flight mode to recover the abnormal link.
In a second aspect, an embodiment of the present application provides an apparatus for processing an abnormal link, where the apparatus includes:
the sending module is used for continuously sending N data packets of specified types;
the abnormal determining module is used for determining that an abnormal link exists when N data packets of specified types are continuously sent and response information of any one data packet in the N data packets is not received;
and the recovery module is used for switching from the source cell to the target cell according to the current access state of the UE.
In a third aspect, an embodiment of the present application provides a user equipment, including: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of exception link handling as provided in the first aspect.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer executing instruction is stored in the computer-readable storage medium, and when a processor executes the computer executing instruction, the method for processing an abnormal link as provided in the first aspect is implemented.
According to the method and the device for processing the abnormal link, the UE continuously sends N data packets of specified types; when the UE continuously sends N data packets of specified types and does not receive response information of any data packet in the N data packets, determining that an abnormal link exists; and the UE is switched from the source cell to the target cell according to the current access state. According to the embodiment of the application, whether an abnormal link exists is determined by recording the sending times and the response data of the data packet of the specified type, the link between the base station and the gateway can be effectively detected to be abnormal, the link can be timely recovered by switching the UE from the source cell to the target cell, and the problem that the communication service of the UE side is abnormal can be effectively avoided.
Drawings
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 inventive exercise.
Fig. 1 is a block diagram of a wireless communication system according to an embodiment of the present application;
fig. 2 is a first flowchart illustrating a method for processing an abnormal link according to an embodiment of the present application;
fig. 3 is a flowchart illustrating a second method for processing an abnormal link according to an embodiment of the present application;
fig. 4 is an interaction flow diagram of a processing method for an abnormal link provided in the embodiment of the present application;
fig. 5 is a schematic structural diagram of a device for processing an abnormal link provided in an embodiment of the present application;
fig. 6 is a schematic structural diagram of a user equipment provided in an embodiment of the present application.
Detailed Description
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 embodiment of the application can be applied to various communication systems, such as: an Advanced long term evolution (LTE-a) System, a New Radio (NR) System, an evolution System of the NR System, an LTE (LTE-based access to unlicensed spectrum, LTE-U) System on an unlicensed spectrum, an NR (NR-based access to unlicensed spectrum, NR-U) System on an unlicensed spectrum, a Universal Mobile Telecommunications System (UMTS), a Wireless Local Area Network (WLAN), a Wireless Fidelity (WiFi), a next-generation communication System, or other communication systems.
Generally, the conventional Communication system supports a limited number of connections and is easy to implement, however, with the development of Communication technology, the mobile Communication system will support not only conventional Communication but also, for example, Device-to-Device (D2D) Communication, Machine-to-Machine (M2M) Communication, Machine Type Communication (MTC), and Vehicle-to-Vehicle (V2V) Communication, and the embodiments of the present application can also be applied to these Communication systems.
Optionally, the communication system in the embodiment of the present application may be applied to a Carrier Aggregation (CA) scenario, may also be applied to a Dual Connectivity (DC) scenario, and may also be applied to an independent (SA) networking scenario.
The frequency spectrum of the application is not limited in the embodiment of the present application. For example, the embodiments of the present application may be applied to a licensed spectrum and may also be applied to an unlicensed spectrum.
Referring to fig. 1, fig. 1 is a schematic diagram of an architecture of a wireless communication system according to an embodiment of the present disclosure. The wireless communication system provided by the present embodiment includes a UE101 and a network device 102.
Alternatively, the UE101 may refer to various forms of user equipment, access terminal, subscriber unit, subscriber station, Mobile Station (MS), remote station, remote terminal, mobile device, terminal device (terminating equipment), wireless communication device, user agent, or user device. The UE may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computing device or other processing devices connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which is not limited in this embodiment of the present application as long as the UE101 can wirelessly communicate with the network device 102.
In the embodiment of the application, a unidirectional communication link from an access network to UE is defined as a downlink, data transmitted on the downlink is downlink data, and the transmission direction of the downlink data is called as a downlink direction; the unidirectional communication link from the UE to the access network is an uplink, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is referred to as an uplink direction.
Optionally, the Network device 102, that is, a public mobile communication Network device, is an interface device for the UE101 to Access the internet, and is also a form of a Radio Station, and refers to a Radio transceiver Station for performing information transmission with the UE101 in a certain Radio coverage area, and includes a Base Station (BS), which may also be referred to as a Base Station device, and is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, a device providing a Base Station function in a 2G network includes a Base Transceiver Station (BTS), a device providing a Base Station function in a 3G network includes a node B (NodeB), a device providing a Base Station function in a 4G network includes an Evolved node B (Evolved NodeB, eNB), a device providing a Base Station function in a Wireless Local Area Network (WLAN) is an Access Point (AP), a device providing a Base Station function in a 5G NR is a gNB (Access Point, eNB), and a node B (ng-eNB) continues to evolve, where the gNB and the UE communicate with each other by using an NR technology, the ng-eNB and the UE communicate with each other by using an Evolved Universal Terrestrial radio Access network (E-eNB) technology, and both the gNB and the ng-eNB may be connected to the 5G core network. The network device 102 in the embodiment of the present application also includes a device that provides a base station function in a future new communication system, and the like.
In this embodiment, the UE101 at least includes a baseband module and a Transmission Control module, where the baseband module is configured to interact with a base station to transmit data, and the Transmission Control module may be a Transmission Control Protocol/Internet Protocol (TCP/IP) Protocol stack module, and is configured to send and receive a data packet, send and receive a response signal, and have a function of detecting response data.
The data packet sent to the base station by the baseband module of the UE101 is transmitted to the destination address through the gateway, and when the link between the base station and the gateway is abnormal, the baseband module of the UE101 has a normal function of sending and receiving data, but the gateway does not feed back data to the baseband module, so that for the transmission control module, any downlink data packet of the gateway cannot be received. The method and the device realize the detection of the abnormal link by recording the response data of the data packet and detecting the abnormal link by using the response data.
For better understanding of the technical solution in the embodiment of the present application, the following detailed description is provided, please refer to fig. 2, and fig. 2 is a first schematic flowchart of a processing method for an abnormal link provided in the embodiment of the present application, where the method includes:
step 201, the UE continuously sends N data packets of the specified type.
Step 202, when the UE continuously sends N data packets of the specified type and does not receive response information of any one of the N data packets, it is determined that an abnormal link exists.
Step 203, the UE switches from the source cell to the target cell according to the current access state.
In this embodiment of the present application, the UE includes a transmission control module and a baseband module, and the transmission control module and the baseband module may transmit data to each other, where the transmission control module may send a data packet of a specified type, where the data packet of the specified type may be a synchronization Signal (SYNC) data packet or a Domain Name System (DNS) query data packet.
The data packet of the designated type sent by the transmission control module is sent to the baseband module firstly, and then sent to the base station by the baseband module, and the transmission control module records the response data of the sent data packet of the designated type. Specifically, after sending a data packet of a specified type, the transmission control module records a time point of sending the data packet, and if a response signal of the data packet is received within a preset time period from the time point, records the response signal to obtain response data.
Specifically, the method for recording the response data of the data packet by the transmission control module includes the following steps:
a, a transmission control module monitors whether a response signal of a data packet is received within a preset time period;
b, if a response signal of the data packet is received within a preset time period, resetting a count value; the counting value is used for recording the times of continuously not receiving the response signals of the data packets;
and step C, if the response signal of the data packet is not received in the preset time period, adding 1 to the count value, retransmitting the data packet of the specified type, and continuing to execute the step A, namely monitoring whether the response signal of the data packet is received in the preset time period until the transmission times of the data packet reach the preset times.
In this embodiment of the application, after sending a data packet, the transmission control module monitors whether a response signal of the data packet is received within a preset time period, for example, for a SYNC data packet, the response signal is SYNC ACK (acknowledgement).
In order to more effectively detect the response signal, a count value is set, the count value is used for recording the number of times that the response signal of the data packet is not received continuously, namely the response signal of the data packet is received in a preset time period, the count value is cleared, if the response signal of the data packet is not received in the preset time period, the count value is added by 1, the count value is the response data, and the data packet of the specified type is retransmitted.
It can be understood that, after retransmitting the data packet, the transmission control module will continue to monitor whether the response signal of the data packet is received within the preset time period, that is, return to execute step a described above, and for the retransmitted data packet, if the response signal of the data packet is received within the preset time period, the count value is cleared, and the data packet does not need to be retransmitted continuously, at this time, the response data (count value) is 0, and if the response signal of the data packet is not received within the preset time period, continue to execute step C.
It should be noted that, in order to avoid the problem of unlimited retransmission of the data packet, an upper limit value of the number of transmissions of the data packet, that is, a preset number of transmissions, may be set, and the transmission control module adds 1 to the recorded number of transmissions each time the data packet of the specified type is transmitted, and stops retransmitting the data packet of the specified type when the number of transmissions reaches the preset number, where the count value is usually not 0.
On the basis of recording the number of times that no response signal is continuously received based on the count value, the transmission control module judges whether the count value is greater than or equal to a preset abnormal threshold (N), determines that an abnormal link exists when the count value is greater than or equal to the abnormal threshold (N), and determines that the abnormal link does not exist when the count value is less than the abnormal threshold.
The anomaly threshold may be set in a preset manner, for example, may be set to 5, 10, 15, and the like, and may be set based on needs in practical applications, which is not limited herein.
In the embodiment of the application, the transmission control module sends the data packet of the specified type for multiple times, monitors the response signal of the data packet of the specified type, and if it is monitored that the response signal is not received for N consecutive times (abnormal threshold), it indicates that the data packet sent by the transmission control module is not continuously transmitted after reaching the base station, and an abnormal link exists between the base station and the gateway. If the number of times of continuously not receiving the response signal is monitored to be less than N times, the response signal may not be received due to other reasons, and at this time, it cannot be determined whether an abnormal link exists between the base station and the gateway. By means of setting the abnormal threshold, the number of times that the response signal is not received continuously can be compared with the abnormal threshold to determine whether the abnormal link exists, the detection of the abnormal link can be effectively achieved, and the detection accuracy is high.
When the abnormal link is determined to exist, the transmission control module sends a link abnormal indication to the baseband module, wherein the link abnormal indication is used for indicating the baseband module to recover the abnormal link, and therefore, the baseband module recovers the link abnormal after receiving the link abnormal indication.
It should be noted that, when determining that there is an anomaly based on the response signal, the transmission control module may carry an anomaly type in the sent link anomaly indication, for example, the anomaly type may be that an abnormal link exists between the base station and the gateway, so that after receiving the link anomaly indication, the baseband module can determine a manner of recovering the anomaly based on the anomaly type.
For example, after receiving the link abnormal indication, the baseband module identifies the access state of the UE to which the baseband module belongs, and then switches the UE from the source cell to the target cell according to the access state, so as to recover the abnormal link.
The source cell is a serving cell where the UE currently resides, and the target cell is a serving cell with the strongest signal quality except the source cell obtained by measurement.
In the method for processing the abnormal link provided by the embodiment of the application, the UE continuously sends N data packets of specified types; and if the UE does not receive the response information of any data packet in the N data packets within the preset time, determining that an abnormal link exists, and switching from the source cell to the target cell according to the current access state. According to the embodiment of the application, whether an abnormal link exists is determined by recording the sending times and the response data of the data packet of the specified type, the link between the base station and the gateway can be effectively detected to be abnormal, link recovery can be timely carried out by switching the UE from the source cell to the target cell, and the problem that the communication service of the UE side is abnormal can be effectively avoided.
Based on the content described in the above embodiments, the following describes in detail the process of the baseband module performing recovery of the abnormal link in the present application.
In this embodiment of the present application, there are two access states of the UE, which are a Connected state and an IDLE state, where the Connected state refers to a state where a Radio Resource Control (RRC) connection is established between the UE and the base station, and data can be received and transmitted at any time, and the Connected state may occupy a downlink Control channel and/or a downlink traffic channel. The idle state refers to a state in which no RRC connection is established between the user equipment and the base station, no service is performed, and no network resource is occupied. For different access states, different recovery modes of the abnormal link exist, so that after receiving the link abnormality indication, the baseband module identifies the access state of the user equipment to which the baseband module belongs, and recovers the abnormal link according to the access state.
The baseband module executes the switching operation of the target cell according to the access state, and the specific switching operation is different for the connection state and the idle state. It can be understood that, in the case that an abnormal link exists between the base station and the gateway, the user equipment may connect to a normal target cell by performing a handover operation of the target cell, where in the target cell, there are the target base station and the target gateway, and usually there is no abnormal link between the target base station and the target gateway, and if there is an abnormal link, the user equipment may access to the target cell where there is no abnormal link between the base station and the gateway by performing a handover operation again.
In a possible implementation manner, when the access state is a connected state, the UE adjusts the measured signal quality of the target cell and/or the source cell; and then sending a measurement event report capable of triggering cell switching to the network equipment, wherein the measurement event report is used for triggering the network equipment to switch the UE to a target cell, the measurement event report comprises the adjusted signal quality of the target cell, and the target cell is a serving cell with the strongest signal quality except the source cell.
Optionally, the UE adjusts the measured signal quality of the target cell and/or the source cell, which includes any one of the following manners:
and the UE increases the signal quality of the target cell, so that the signal quality of the target cell after adjustment is higher than that of the source cell.
And the UE reduces the signal quality of the source cell, so that the adjusted signal quality of the source cell is lower than that of the target cell.
And the UE adjusts the signal quality of the target cell to be high and simultaneously adjusts the signal quality of the source cell to be low, so that the adjusted signal quality of the target cell is higher than that of the source cell.
It can be understood that the ue will monitor the signal quality of the cell where the ue is currently located and the signal qualities of its neighboring cells in real time, and when a cell needs to be handed over, may determine a target cell based on the monitored signal qualities of the neighboring cells, and may improve the signal quality of the target cell in order to be able to handover to the target cell, for example, if the monitored signal quality of the target cell is a, the signal quality of the target cell may be actively modified to be a + B, where B is a preset offset. And the sending of the cell switching request to the base station by the baseband module may be a process of sending an a3 event, which may trigger the base station to start a cell switching process, and after the base station determines that the user equipment may be switched to a target cell, the base station sends a switching instruction to the baseband module of the user equipment, and after receiving the switching instruction, the baseband module sends a connection access instruction to the target cell, and if the access is successful, the base station indicates that the cell is successfully switched to the target cell.
In another possible embodiment, when the access state is a connected state, the UE performs RRC connection reestablishment on the target cell.
In another possible implementation, when the access status is idle, the UE triggers reselection of the target cell and accesses the target cell.
That is, when the access state of the user equipment is an idle state, the baseband module triggers reselection of the target cell and accesses the reselected target cell. Namely, in the idle state, the handover operation is completed by means of cell reselection.
The cell reselection is an active reselection process of the user equipment in an idle state, and does not need to inform a base station in advance.
Optionally, after the UE is switched from the source cell to the target cell, an abnormal identifier is added to the source cell, where the abnormal identifier is used to prevent the UE from being switched back to the source cell.
Based on the content described in the foregoing embodiment, referring to fig. 3, fig. 3 is a second flowchart illustrating a processing method for an abnormal link provided in an embodiment of the present application, in a feasible implementation manner of the present application, the processing method for an abnormal link includes:
step 301, the UE continuously sends N data packets of the specified type.
Step 302, when the UE continuously sends N data packets of the specified type and does not receive response information of any one of the N data packets, it is determined that an abnormal link exists.
Step 303, the UE switches from the source cell to the target cell according to the current access state.
Step 304, when the UE is not successfully switched to the target cell and there are other target cells meeting the preset conditions, the UE performs a switching operation of switching from the source cell to the other target cells meeting the preset conditions according to the current access state.
And 305, recording the continuous failure times of the switching operation when the switching operation fails.
Step 306, when the number of the continuous failures is greater than or equal to a preset value, or the UE has performed the handover operation in other target cells satisfying preset conditions, and the abnormal link is still not recovered, the UE performs the release and reactivation of the PDP/PDN connection, or performs an in-and-out flight mode to recover the abnormal link.
In the embodiment of the present application, in addition to the case that the user equipment is successfully handed over to the target cell, in practical application, there may be a case that the handover fails, and for the case that the handover fails, the following processing may be performed:
step a, if the user equipment is not successfully switched to the target cell, the baseband module determines the continuous failure times of the switching operation;
step b, when the times are less than a preset value and a target cell which meets a preset condition and does not try to switch still exists, continuing to execute switching operation for switching from the source cell to the target cell according to the access state;
and c, when the times are larger than or equal to a preset value or the currently detectable cells try to switch, the baseband module executes the release and reactivation of the PDP or PDN connection or executes an in-and-out flight mode to recover the abnormal link.
In this embodiment, the user equipment may monitor a plurality of neighboring cells in addition to a currently accessed cell (serving cell), and may switch to any one of the plurality of neighboring cells when performing handover.
The target cell satisfying the preset condition may be understood as a serving cell satisfying the UE camping condition.
When the user equipment is not successfully switched to the target cell, the baseband module of the user equipment determines the number of times of continuous failure of the switching operation of the target cell, and when the number of times is smaller than a preset value, the user equipment may reselect a new target cell and return to the step of executing the switching operation of the target cell according to the access state.
When the number of times is greater than or equal to the preset value, in a feasible implementation, the baseband module will perform the release and reactivation of the PDP/PDP connection, or may also perform the in-and-out flight mode to recover the abnormal link.
In another feasible implementation manner, whether to end the cell handover attempt may also be determined not by a preset value manner, but by a traversal manner, neighboring cells of the user equipment are traversed until the handover to a certain neighboring cell is successful, or when the handover to a certain neighboring cell is still unsuccessful after the traversal is completed, the release and reactivation of the PDP or PDN connection are performed to recover the abnormal link; or to perform a mode of ingress and egress flight mode to restore the abnormal link.
In the embodiment of the application, the transmission control module sends a data packet of a specified type, records response data of the data packet, detects whether an abnormal link exists according to the response data, if the abnormal link exists, the transmission control module sends a link abnormality indication to the baseband module, and the baseband module recovers the abnormal link after receiving the link abnormality indication. By using the mode of recording the response data of the data packet of the specified type by the transmission control module, whether an abnormal link exists or not can be determined based on the response data, the link abnormality between the base station and the gateway can be effectively detected, and the problem that the service on the user equipment side cannot be triggered can be effectively solved by the link recovery mode.
For better understanding of the embodiment of the present application, please refer to fig. 4, where fig. 4 is an interactive flowchart illustrating a processing method for an abnormal link provided in the embodiment of the present application, including:
401. and (3) sending a data packet: the transmission control module sends some data packets, such as SYNC packets, or DNS queries, critical to the legitimate website to the baseband module.
402. After the UE continuously sends the N data packets, the UE does not receive the response information of any data packet in the N data packets within the preset time: the transmission control module counts the number of times of sending the key data packet, and if the response information of any data packet in the N data packets is not received after the N data packets are continuously sent, the execution continues to 403.
403. Requesting the baseband module to switch the cell: the baseband module performs an operation of switching cells.
404. Handover from source cell to target cell: and the baseband module controls the UE to be switched from the source cell to the target cell.
If the UE is successfully handed over from the source cell to the target cell, the process continues to be performed 405; if the UE is not successfully switched to the target cell and other target cells meeting the preset conditions exist, the UE executes switching operation of switching from the source cell to other target cells meeting the preset conditions according to the current access state; if the switching operation fails, recording the continuous failure times of the switching operation; when the number of consecutive failures is greater than or equal to the preset value, or the UE has performed the handover operation in other target cells satisfying the preset condition, and the abnormal link is not recovered yet, then 407 is performed.
405. Sending a switching success confirmation message: if the target cell is successfully switched, the baseband module sends a cell switching success confirmation message to the transmission control module, and continues to execute 406.
406. And the UE executes the service on the target cell, and the process is ended.
407. A handover failure acknowledgement message is sent and execution continues at 408.
408. The transmission control module triggers the baseband module to execute the release and reactivation of the PDP/PDN connection; or further trigger an ingress and egress flight mode to restore the link.
It should be noted that, in the embodiment of the present application, the content of the specific execution of the base station, the baseband module, and the transmission control module may refer to the related content in the embodiment shown in fig. 2 and fig. 3, which is not described herein again.
Based on the content described in the foregoing embodiments, an apparatus for processing an abnormal link is also provided in the embodiments of the present application. Referring to fig. 5, fig. 5 is a schematic diagram of program modules of a processing apparatus for an abnormal link provided in an embodiment of the present application, and in a possible implementation manner of the present application, the processing apparatus 50 for an abnormal link includes:
a sending module 501, configured to send N data packets of a specified type consecutively.
An exception determining module 502, configured to determine that an exception link exists when the UE continuously sends N data packets of a specified type and does not receive response information of any data packet of the N data packets.
A recovering module 503, configured to switch from the source cell to the target cell according to the current access state of the UE.
The processing device 50 for the abnormal link provided in the embodiment of the present application enables the UE to continuously send N data packets of specified types; if the UE does not receive the response information of any data packet in the N data packets within the preset time, determining that an abnormal link exists; and the UE is switched from the source cell to the target cell according to the current access state. According to the embodiment of the application, whether an abnormal link exists is determined by recording the sending times of the data packet of the specified type and the response data, the link between the base station and the gateway can be effectively detected to be abnormal, the link can be timely recovered by switching the UE from the source cell to the target cell, and the problem that the communication service of the UE side is abnormal can be effectively avoided.
In a possible implementation, the recovery module 503 is specifically configured to:
and when the access state is a connection state, adjusting the measured signal quality of the target cell and/or the source cell to trigger network equipment to switch the UE from the source cell to the target cell, wherein the target cell is a serving cell with the strongest signal quality except the source cell.
In a possible embodiment, the adjusting, by the UE, the measured signal quality of the target cell and/or the source cell includes:
and increasing the signal quality of the target cell and/or decreasing the signal quality of the source cell, so that the adjusted signal quality of the target cell is stronger than that of the source cell.
In another possible implementation, the recovery module 503 is specifically configured to:
and when the access state is a connection state, performing RRC connection reestablishment on the target cell.
In another possible implementation, the recovery module 503 is specifically configured to:
and when the access state is an idle state, triggering the reselection of the target cell and accessing the target cell.
In yet another possible implementation, the recovery module 503 is further configured to:
after UE is switched from a source cell to a target cell, adding an abnormal identifier to the source cell, wherein the abnormal identifier is used for preventing the UE from being switched back to the source cell.
In yet another possible implementation, the recovery module 503 is specifically configured to:
when the UE is not successfully switched to the target cell and other target cells meeting the preset conditions exist, switching operation of switching from the source cell to the other target cells meeting the preset conditions according to the current access state of the UE is executed;
if the switching operation fails, recording the continuous failure times of the switching operation;
when the number of the continuous failures is larger than or equal to a preset value, or the switching operation has been executed in the other target cells meeting the preset condition, and the abnormal link is not recovered yet, the UE executes the release and reactivation of the PDP or PDN connection, or executes an in-and-out flight mode to recover the abnormal link.
It should be noted that, for the content specifically executed by the sending module 501, the abnormality determining module 502, and the recovering module 503 in this embodiment, reference may be made to relevant content in the embodiments shown in fig. 2 to fig. 4, which is not described herein again.
Further, based on the content described in the foregoing embodiments, an embodiment of the present application also provides a user equipment, where the user equipment includes at least one processor and a memory; wherein the memory stores computer execution instructions; the at least one processor executes computer-executable instructions stored in the memory to implement the aspects described in the embodiments of the method for processing an exception link as described above.
It should be understood that the user equipment provided in this embodiment may be used to implement the technical solution of the above method embodiment, and the implementation principle and technical effect are similar, so that details of this embodiment are not described herein again.
For better understanding of the embodiment of the present application, referring to fig. 6, fig. 6 is a schematic diagram of a hardware structure of a user equipment provided in the embodiment of the present application.
As shown in fig. 6, the user equipment 60 of the present embodiment includes: a processor 601 and a memory 602; wherein
A memory 602 for storing computer-executable instructions;
the processor 601 is configured to execute the computer executable instructions stored in the memory to implement the steps performed by the user equipment in the above embodiments.
Reference may be made in particular to the description relating to the method embodiments described above.
Alternatively, the memory 602 may be separate or integrated with the processor 601.
When the memory 602 is provided separately, the device further comprises a bus 603 for connecting said memory 602 and the processor 601.
Based on the content in the foregoing embodiments, the present application further provides a computer-readable storage medium, where computer-executable instructions are stored, and when a processor executes the computer-executable instructions, the steps performed by the user equipment in the foregoing embodiments are implemented.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules 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 modules, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present application may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.
The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present application.
It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, 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 the incorporated application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor.
The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.
The storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium may reside as discrete components in an electronic device or host device.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A method for processing an abnormal link, the method comprising:
user Equipment (UE) continuously sends N data packets of specified types;
when the UE continuously sends N data packets of specified types and does not receive response information of any data packet in the N data packets, determining that an abnormal link exists;
and the UE is switched from the source cell to the target cell according to the current access state.
2. The method of claim 1, wherein the UE is handed over from a source cell to a target cell according to a current access status, comprising:
and when the access state is a connection state, the UE adjusts the measured signal quality of the target cell and/or the source cell to trigger network equipment to switch the UE from the source cell to the target cell, wherein the target cell is a serving cell with the strongest signal quality except the source cell.
3. The method of claim 2, wherein the UE adjusts the measured signal quality of the target cell and/or the source cell, and wherein the adjusting comprises:
and the UE increases the signal quality of the target cell and/or decreases the signal quality of the source cell, so that the adjusted signal quality of the target cell is stronger than that of the source cell.
4. The method of claim 1, wherein the UE is handed over from a source cell to a target cell according to a current access status, comprising:
and when the access state is a connection state, the UE executes RRC connection reestablishment on the target cell.
5. The method of claim 1, wherein the UE is handed over from a source cell to a target cell according to a current access status, comprising:
and when the access state is an idle state, the UE triggers the reselection of the target cell and accesses the target cell.
6. The method according to any one of claims 1 to 5, further comprising:
and after the UE is switched from the source cell to the target cell, adding an abnormal identifier to the source cell, wherein the abnormal identifier is used for preventing the UE from being switched back to the source cell.
7. The method of claim 6, further comprising:
when the UE is not successfully switched to the target cell and other target cells meeting preset conditions exist, the UE executes switching operation of switching from a source cell to the other target cells meeting the preset conditions according to the current access state;
if the switching operation fails, recording the continuous failure times of the switching operation;
when the number of the continuous failures is larger than or equal to a preset value, or the UE has executed the switching operation in other target cells meeting preset conditions, if the abnormal link is not recovered yet, the UE executes the release and reactivation of a Packet Data Protocol (PDP) or a Packet Data Network (PDN) connection, or executes an in-and-out flight mode to recover the abnormal link.
8. An apparatus for processing an exception link, the apparatus comprising:
the sending module is used for continuously sending N data packets of specified types;
the abnormal determining module is used for determining that an abnormal link exists when N data packets of specified types are continuously sent and response information of any one data packet in the N data packets is not received;
and the recovery module is used for switching from the source cell to the target cell according to the current access state of the user equipment UE.
9. A user device, comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of processing an exception link according to any one of claims 1 to 7.
10. A computer-readable storage medium having computer-executable instructions stored thereon, which when executed by a processor, implement the method of processing an exceptional link according to any one of claims 1 to 7.
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