CN108307452B - Connection recovery method and device, base station and user terminal - Google Patents
Connection recovery method and device, base station and user terminal Download PDFInfo
- Publication number
- CN108307452B CN108307452B CN201610665331.6A CN201610665331A CN108307452B CN 108307452 B CN108307452 B CN 108307452B CN 201610665331 A CN201610665331 A CN 201610665331A CN 108307452 B CN108307452 B CN 108307452B
- Authority
- CN
- China
- Prior art keywords
- connection
- base station
- user terminal
- recovery
- configuration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A connection recovery method and device, a base station and a user terminal are provided, wherein the connection recovery method comprises the following steps: receiving a connection recovery request sent by a user terminal, wherein the connection recovery request carries a truncation recovery identifier; sending an acquisition request to at least one base station according to the base station identifier in the truncation recovery identifier so as to acquire a first connection configuration of the user terminal during last connection; when the first connection configuration is acquired, sending a connection recovery response to the user terminal according to at least one part of the first connection configuration; and when receiving the feedback of the user terminal aiming at the connection recovery response, sending a path switching request to a core network element to complete the path switching. The technical scheme of the invention improves the effectiveness of the terminal in connection recovery.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a connection recovery method and apparatus, a base station, and a user terminal.
Background
In a Long Term Evolution (LTE) system, when a User Equipment (UE, or called a User terminal) has a service requirement, the UE accesses a network to establish a Radio Resource Control (RRC) connection, and establishes a dedicated bearer to transmit data. After the UE enters the connected state, the base station allocates necessary parameters to the UE. For the bearer established by the UE, the base station needs to know the channel information between the bearer and the core network, and the above parameters may be referred to as a Context (UE Context) of the UE. When the UE enters the idle state from the connected state, the base station releases all parameters of the UE, i.e., releases the context of the UE. If the UE establishes the service again, the base station needs to reconfigure the parameters for the UE again, and the process is completed through multiple air interface signaling and S1 interface signaling.
In the prior art, a low-cost terminal and a common terminal may need to perform data transmission more frequently, but if the terminal is maintained in a connected state for a long time, not only power consumption is large, but also signaling consumption for a network to maintain the connected state is also great. To this problem, a recovery mechanism (RRC Suspend, or UP Optimization) can be introduced. When the UE enters a connected state, a recovery identifier (Resume ID) with the length of 40 bits is allocated to the UE, and the UE entering an idle state needs to reserve parameters configured by the access network; the base station also retains the parameters configured by the UE accessing the network this time, and the base station is called a source base station. When the UE accesses the network again, the UE may initiate a recovery procedure, and indicate a recovery identifier of the UE to the base station, so that the base station may identify the UE and recover a service channel, that is, a GTP tunnel of the S1 interface, for the UE by using the stored parameters configured by the last access network, so that the UE may perform data transmission using the channel. If the UE moves to another cell, the serving base station is changed to the target base station. After the UE initiates the recovery procedure, the target base station may determine the source base station through the recovery identifier sent by the UE, and then obtain the parameters configured when the UE is connected last time through the source base station, and after obtaining the parameters configured when the UE is connected last time, the recovery procedure may be completed. Wherein, the recovery identifier comprises a base station identifier of 20 bits and a UE identifier of 20 bits. The target base station may identify the source base station if the UE may carry a 40-bit recovery identity in the connection recovery request.
However, in practical applications, especially for non-narrowband terminals, there is a strict limitation on the total number of bits for the UE to send the connection recovery request, and the UE can only send the truncation recovery flag when sending the connection recovery request. The truncated Resume ID (truncated Resume ID) is only 24 bits. In this case, the target base station cannot accurately determine the source base station, and then the target base station cannot acquire the parameters configured by the UE in the last connection from the source base station, and the UE cannot successfully perform connection recovery. Meanwhile, if no X2 interface exists between the target base station and the source base station, the target base station also cannot obtain the parameters configured by the UE in the last connection from the source base station, the UE cannot successfully perform connection recovery, and the UE and the target base station need to establish a new RRC connection. At this time, the source base station also stores parameters configured when the UE connects last time, which wastes resources and prevents the recovery identifier from being released in time.
Disclosure of Invention
The invention solves the technical problem of how to improve the effectiveness of the terminal in connection recovery.
In order to solve the foregoing technical problem, an embodiment of the present invention provides a connection recovery method, where the connection recovery method includes: receiving a connection recovery request sent by a user terminal, wherein the connection recovery request carries a truncation recovery identifier; sending an acquisition request to at least one base station according to the base station identifier in the truncation recovery identifier so as to acquire a first connection configuration of the user terminal during last connection; when the first connection configuration is acquired, sending a connection recovery response to the user terminal according to at least one part of the first connection configuration; and when receiving the feedback of the user terminal aiming at the connection recovery response, sending a path switching request to a core network element to complete the path switching.
Optionally, the connection recovery method further includes: notifying a source base station that transmitted the first connection configuration, so that the source base station releases the first connection configuration.
Optionally, the first connection configuration is acquired and the source base station is notified through an X2 interface.
Optionally, the connection recovery method further includes: and if the first connection configuration is failed to be acquired, sending a connection establishment signaling to the user terminal so as to establish a new connection.
Optionally, in response to the establishment of the new connection, the core network element notifies the source base station to release the first connection configuration through an interface with the source base station, where information of the interface is pre-stored in the core network element, and the user terminal establishes a connection with the core network element through the source base station when establishing a connection last time.
In order to solve the above technical problem, an embodiment of the present invention further discloses a connection recovery method, where the connection recovery method includes:
sending a connection recovery request to a target base station, wherein the connection recovery request carries a truncation recovery identifier, and the target base station acquires a first connection configuration of a user terminal during last connection according to the truncation recovery identifier and sends a connection recovery response to the user terminal; and receiving the connection recovery response, and sending feedback aiming at the connection recovery response according to a second connection configuration saved in advance so as to complete connection.
Optionally, the connection recovery method further includes: when the connection recovery response is not received, receiving a connection establishment signaling sent by the target base station; and establishing a signaling radio bearer according to the connection establishment signaling, and feeding back the signaling radio bearer to the target base station to establish a new connection.
In order to solve the above technical problem, an embodiment of the present invention further discloses a connection recovery device, where the connection recovery device includes: a recovery request receiving unit, adapted to receive a connection recovery request sent by a user terminal, where the connection recovery request carries a truncation recovery identifier; an obtaining request sending unit, adapted to send an obtaining request to at least one base station according to the base station identifier in the truncation restoration identifier, so as to obtain a first connection configuration of the user terminal during a last connection; a connection restoration response sending unit, adapted to send a connection restoration response to the user terminal according to at least a part of the first connection configuration when the first connection configuration is obtained; and the path switching request sending unit is suitable for sending a path switching request to a core network element to complete the path switching when receiving the feedback of the connection recovery response of the user terminal.
Optionally, the connection recovery apparatus further includes: a release notification unit adapted to notify a source base station that transmitted the first connection configuration, so that the source base station releases the first connection configuration.
Optionally, the first connection configuration is acquired and the source base station is notified through an X2 interface.
Optionally, the connection recovery apparatus further includes: and the connection establishing unit is suitable for sending a connection establishing signaling to the user terminal to establish a new connection when the first connection configuration is failed to be acquired.
Optionally, in response to the establishment of the new connection, the core network element notifies the source base station to release the first connection configuration through an interface with the source base station, where information of the interface is pre-stored in the core network element, and the user terminal establishes a connection with the core network element through the source base station when establishing a connection last time.
In order to solve the above technical problem, an embodiment of the present invention further discloses a connection recovery device, where the connection recovery device includes: a recovery request sending unit, adapted to send a connection recovery request to a target base station, where the connection recovery request carries a truncation recovery identifier, and the target base station obtains a first connection configuration of a user terminal during a last connection according to the truncation recovery identifier, and sends a connection recovery response to the user terminal; and the connection recovery unit is suitable for receiving the connection recovery response and sending feedback aiming at the connection recovery response according to the second connection configuration saved in advance so as to complete connection.
Optionally, the connection recovery apparatus further includes: a connection establishment signaling receiving unit, adapted to receive the connection establishment signaling sent by the target base station when receiving the connection recovery response fails; and the bearing establishing unit is suitable for establishing a signaling wireless bearing according to the connection establishing signaling and feeding back the signaling wireless bearing to the target base station so as to establish new connection.
In order to solve the above technical problem, an embodiment of the present invention further discloses a base station, where the base station includes the connection recovery apparatus.
In order to solve the above technical problem, an embodiment of the present invention further discloses a user terminal, where the user terminal includes the connection recovery apparatus.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
the embodiment of the invention receives a connection recovery request sent by a user terminal, wherein the connection recovery request carries a truncation recovery identifier; sending an acquisition request to at least one base station according to the base station identifier in the truncation recovery identifier so as to acquire a first connection configuration of the user terminal during last connection; when the first connection configuration is acquired, sending a connection recovery response to the user terminal according to at least one part of the first connection configuration; and when receiving the feedback of the user terminal aiming at the connection recovery response, sending a path switching request to a core network element to complete the path switching. Sending an acquisition request to at least one base station by intercepting the base station identifier in the recovery identifier, so that the acquisition of the first connection configuration of the user terminal in the last connection can be ensured to a certain extent; and then, the connection can be quickly established with the user terminal according to at least one part of the first connection configuration so as to transmit data, so that the effectiveness of the terminal in connection recovery is improved, and the transmission efficiency is improved.
Further, the source base station sending the first connection configuration is notified, so that the source base station releases the first connection configuration, thereby avoiding the first connection configuration from occupying storage resources at the source base station side, and reducing resource waste.
Further, in response to the establishment of the new connection, the core network element notifies the source base station to release the first connection configuration through an interface with the source base station. The technical scheme of the invention ensures that the source base station can be informed to release the first connection configuration through the core network element when the first connection configuration is failed to be obtained, thereby avoiding the first connection configuration from occupying storage resources at the source base station side and reducing resource waste.
Drawings
FIG. 1 is a schematic diagram of a configuration restoration identification process of the prior art;
FIG. 2 is a flow chart of a method for connection recovery according to an embodiment of the present invention;
FIG. 3 is a flow chart of another method of connection recovery according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a connection recovery process according to an embodiment of the invention;
FIG. 5 is a schematic structural diagram of a connection recovery apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another connection recovery apparatus according to an embodiment of the present invention.
Detailed Description
As described in the background art, in practical applications, especially for non-narrowband terminals, there is a strict limitation on the total number of bits for a UE to send a connection recovery request, and the UE can only send a truncation recovery flag when sending the connection recovery request. The truncated Resume ID (truncated Resume ID) is only 24 bits. In this case, the target base station cannot accurately determine the source base station, and then the target base station cannot acquire the parameters configured by the UE in the last connection from the source base station, and the UE cannot successfully perform connection recovery. Meanwhile, if no X2 interface exists between the target base station and the source base station, the target base station also cannot obtain the parameters configured by the UE in the last connection from the source base station, the UE cannot successfully perform connection recovery, and the UE and the target base station need to establish a new RRC connection. At this time, the source base station also stores parameters configured when the UE connects last time, which wastes resources and cannot release the recovery identifier in time.
The present inventors have analyzed the prior art. As shown in fig. 1, fig. 1 is a schematic diagram of a configuration recovery identification process in the prior art. The base station informs the UE of its recovery identity (Resume ID) through RRC signaling.
Specifically, in step 1, the UE enters a connected state to perform service, and may perform uplink and downlink data transmission.
In step 2, after the base station determines that the UE has no data transmission, it decides to reserve the context of the UE, and the base station allocates a recovery identifier to the UE.
In step 3, the base station sends a UE context deactivation message to a core network element Mobility Management Entity (MME), indicating to retain the configuration parameters of the UE during the last connection. In particular, the base station may indicate to the MME the time to retain the configuration parameters.
In step 4, if the MME agrees to retain the configuration parameters of the UE at the last connection, the MME returns a UE context activation confirmation to the base station.
In step 5, the base station sends RRC connection suspend signaling to the UE, and the suspend signaling may indicate the resume identity.
In step 6, after receiving the suspend signaling, the UE enters an idle state. The UE retains the configuration parameters of the UE at the last connection, such as security parameters, layer 1, layer2, and layer 3 configuration parameters.
And after the UE enters an idle state, performing cell reselection and selecting a cell which can reside. Since the UE can move and possibly reside in the cells managed by other base stations. If the UE has a data transmission requirement at this time, the UE may initiate a connection recovery procedure in the camped cell. Due to the limitation of resource allocation in the random access response by the base station, when initiating the recovery process, the UE can only carry the truncation recovery identifier, so that the target base station cannot accurately determine the source base station, and then the target base station cannot obtain the parameters configured when the UE is connected last time from the source base station, and the UE cannot successfully perform connection recovery.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 2 is a flowchart of a connection recovery method according to an embodiment of the present invention.
The connection restoration method may be used on the base station side, and more particularly, may be used on the target base station side. It is to be understood that the target base station may refer to the current serving base station of the UE.
The connection restoration method may include the steps of:
step S201: receiving a connection recovery request sent by a user terminal;
step S202: sending an acquisition request to at least one base station according to the base station identifier in the truncation recovery identifier so as to acquire a first connection configuration of the user terminal during last connection;
step S203: when the first connection configuration is acquired, sending a connection recovery response to the user terminal according to at least one part of the first connection configuration;
step S204: and when receiving the feedback of the user terminal aiming at the connection recovery response, sending a path switching request to a core network element to complete the path switching.
In a specific implementation, the connection recovery request may carry a truncation recovery identifier. Specifically, the truncation restoration flag may adopt a base station flag of 12 bits and a UE flag of 12 bits. In particular, the base station may be determined by a base station identity, and the UE may be determined by a UE identity.
In step S201, after the target base station receives the truncation restoration identifier, it cannot accurately determine the source base station that retains the first connection configuration, that is, the target base station cannot determine the actual base station identifier as the base station with the length of 20 bits by truncating the 12-bit base station identifier in the restoration identifier. Then in step S202, the target base station sends an acquisition request to at least one base station according to the base station identifier in the truncation restoration identifier. Specifically, the target base station may send an acquisition request to at least one possible base station and wait for feedback from the base station. Furthermore, at most one base station (source base station) feeds back the acquisition request; if an X2 interface exists between the target base station and the source base station, the target base station can successfully acquire the first connection configuration.
It is to be understood that the obtaining request may be a request for obtaining a UE context to obtain configuration parameters stored at the source base station when the UE connects last time.
Specifically, the user terminal establishes a connection with the source base station at the last connection, and the source base station stores the first connection configuration of the user terminal at the last connection. That is, the source base station may be the serving base station when the user terminal was last connected.
It should be noted that the first connection configuration may be stored in the base station, and the first connection configuration may include an access stratum parameter and a bearer parameter, for example, the first connection configuration may be RRC connection configuration, bearer configuration, security configuration, and parameter configuration related to the S1 interface and the user equipment, and specifically, the bearer configuration may be channel information between the source base station and a core network element, which is established for the bearer by the source base station, that is, information of a tunnel established based on a GPRS Tunneling Protocol (GTP). The second connection configuration may be stored in the user equipment, and the second connection configuration may include access stratum parameters and non-access stratum parameters, for example, the second connection configuration may be RRC connection configuration, bearer configuration, security configuration, or the like; more specifically, it may be layer 2(layer2, L2) related configuration parameters, physical layer related configuration parameters, layer 3(layer 3, L3) related configuration parameters, and the like.
In step S203, if the target base station acquires the first connection configuration, a connection recovery response is sent to the user equipment according to at least a part of the first connection configuration. And completes the switching of the path in step S204, and establishes a dedicated bearer to transmit data.
Specifically, after the target base station acquires the first connection configuration, part of parameters in the first connection configuration may be modified according to software and hardware conditions of the target base station, so as to recover the connection with the user terminal. For example, the target base station may modify the security configuration related parameters.
In a specific implementation, after the user equipment and the target base station resume connection, the target base station may notify the source base station that sent the first connection configuration, so that the source base station releases the first connection configuration, thereby avoiding the first connection configuration from occupying storage resources at the source base station side, and reducing resource waste. Specifically, the target base station may obtain the first connection configuration from the source base station through an X2 interface, and the target base station may notify the source base station to release the first connection configuration through an X2 interface.
Specifically, if there is no X2 interface between the target base station and the source base station, the target base station fails to acquire the first connection configuration. The target base station may send connection setup signaling to the user terminal to set up a new connection. Specifically, in response to the establishment of the new connection, the core network element, for example, an MME, notifies the source base station to release the first connection configuration through an interface with the source base station, where information of the interface is pre-stored in the core network element, and the user terminal establishes a connection with the core network element through the source base station when establishing a connection last time, so that the core network element may obtain the interface information.
It is understood that, in the recovery procedure, the core network element retains at least a part of the parameters configured by the UE in the last connection, where the parameters may be configuration parameters of a non-access stratum of the UE and bearer-related GTP tunnel information.
It should be noted that, compared with the Context (UE Context) of the UE in the prior art, the first connection configuration stored by the source base station, the second connection configuration stored by the UE side, and at least a part of the parameters configured when the UE is connected last time, which are stored by the network element side of the core network, together form the Context of the UE.
In the embodiment of the invention, when the UE carries the truncation recovery identifier and the target base station cannot accurately determine the source base station, the first connection configuration of the UE in the last connection can still be obtained by enhancing the processing of the target base station, and then the connection can be quickly established with the user terminal according to at least one part of the first connection configuration so as to carry out data transmission, thereby improving the effectiveness of the terminal in connection recovery and improving the transmission efficiency. Meanwhile, the source base station can release the first connection configuration of the UE in the last connection in time, and resource waste is avoided.
Fig. 3 is a flow chart of another connection restoration method according to an embodiment of the present invention.
The connection restoration method is used for a user terminal side, and may include the steps of:
step S301: sending a connection recovery request to a target base station;
step S302: and receiving the connection recovery response, and sending feedback aiming at the connection recovery response according to a second connection configuration saved in advance so as to complete connection.
In specific implementation, the connection recovery request carries a truncation recovery identifier, and the target base station acquires the first connection configuration of the user terminal during the last connection according to the truncation recovery identifier and sends a connection recovery response to the user terminal.
In a specific implementation, the second connection configuration may be stored in the ue, and the second connection configuration may include an access stratum parameter and a non-access stratum parameter, for example, the second connection configuration may be an RRC connection configuration, a bearer configuration, a security configuration, and the like; more specifically, the configuration parameters may be layer 2(layer2, L2) -related configuration parameters, physical layer-related configuration parameters, layer 3(layer 3, L3) -related configuration parameters, and the like.
In a specific implementation, when the user terminal does not receive the connection recovery response sent by the target base station, it indicates that the target base station fails to acquire the first connection configuration. At this time, the target base station may send a new connection establishment signaling, and the user terminal may receive the connection establishment signaling. And establishing a signaling radio bearer according to the connection establishment signaling, and feeding back the signaling radio bearer to the target base station to establish a new connection.
Fig. 4 is a schematic diagram of a connection recovery process according to an embodiment of the present invention.
As shown in fig. 4, in step 1, the UE initiates a connection recovery request to the target base station, and sends an RRC connection recovery request to the target base station. The connection recovery request carries a truncation recovery identifier.
In steps 2 and 2A, since the target base station cannot accurately determine the source base station based on the truncation restoration identification, the target base station transmits a request for acquiring the UE context to the plurality of base stations. Specifically, the target base station transmits a request for acquiring the UE context to base stations 1 and 2.
In steps 3 and 3A, base station 1 and base station 2 send feedback for the acquisition request to the target base station, and at most one base station sends a response for the acquisition request. Specifically, the target base station fails to acquire the first connection configuration from the base station 1, and the target base station succeeds in acquiring the first connection configuration from the base station 2. That is, the base station 2 is a source base station.
In step 4, the target base station changes necessary parameters, such as security configuration parameters, etc., for the UE according to the first connection configuration, and then sends RRC connection recovery signaling to the UE.
In step 5, the UE transmits an RRC connection recovery complete response to the target base station. So far the connection over the air interface has been restored.
In step 6, the target base station sends a path switch request to the core network element MME to inform the MME to switch the path originally related to the S1 interface of the UE from the base station 2 to the target base station.
In step 7, the MME sends a path switch response to the target base station. So far, the bearer of the UE has completely recovered, and uplink and downlink data transmission can be started.
In step 8, the target base station informs the base station 2 to release the first connection configuration of the UE.
Further, the connection restoration procedure shown in fig. 4 is the case when there is an X2 interface between the target base station and the base station 2. At this time, the target base station may obtain the first connection configuration from the base station 2.
In a specific implementation, if there is no X2 interface between the target base station and the base station 2, after steps 1 and 2, the target base station cannot obtain the first connection configuration from the base station 2, and at this time, the target base station sends an RRC connection establishment signaling to the UE to notify the UE to establish a signaling radio bearer, and the UE returns an RRC connection establishment completion response. The target base station then informs the MME about the UE's non-access stratum signaling, e.g., service requests, and the MME informs the target base station to establish a data radio bearer for the UE.
Compared with the process of establishing new connection between the UE and the target base station through the RRC connection request in the prior art, the embodiment of the invention establishes the new connection when the UE sends the connection recovery request, ensures that the data is transmitted by establishing the new connection when the connection recovery cannot be successful, and improves the data transmission efficiency.
Specifically, after the UE establishes a new connection with the target base station, the MME may determine that the UE starts to establish a new data radio bearer, and the MME may also determine that the UE has stopped resuming. The MME may send a release request of the first connection configuration to the base station 2, and notify the base station 2 to release the first connection configuration of the UE, which not only may save the storage resource on the base station 2 side, but also may release the recovery identifier resource in advance. Specifically, the configuration parameters saved by the MME side when the UE connects last time may include interface information between the MME and the base station 2, and the MME may notify the base station 2 to release the first connection configuration through the interface between the MME and the base station 2.
Fig. 5 is a schematic structural diagram of a connection recovery apparatus according to an embodiment of the present invention.
The connection restoration apparatus 50 may be used for the base station side, and more specifically, the connection restoration apparatus 50 may be used for the target base station side. The connection restoration apparatus 50 may include a restoration request reception unit 501, an acquisition request transmission unit 502, a connection restoration response transmission unit 503, and a path switching request transmission unit 504.
The recovery request receiving unit 501 is adapted to receive a connection recovery request sent by a user terminal, where the connection recovery request carries a truncation recovery identifier;
the obtaining request sending unit 502 is adapted to send a obtaining request to at least one base station according to the base station identifier in the truncation restoration identifier, so as to obtain a first connection configuration of the user terminal when the user terminal is connected last time;
the connection recovery response sending unit 503 is adapted to send a connection recovery response to the user terminal according to at least a part of the first connection configuration when the first connection configuration is obtained;
the path switching request sending unit 504 is adapted to send a path switching request to a core network element to complete the switching of the path when receiving the feedback of the connection recovery response from the user terminal.
In a specific implementation, the connection recovering apparatus 50 may further include a release notifying unit (not shown), where the release notifying unit is adapted to notify a source base station that sends the first connection configuration, so that the source base station releases the first connection configuration.
In a specific implementation, the connection recovering apparatus 50 may further include a connection establishing unit (not shown), and the connection establishing unit is adapted to send a connection establishing signaling to the user terminal to establish a new connection when the first connection configuration is failed to be obtained.
In a specific implementation, in response to the establishment of the new connection, the core network element notifies the source base station to release the first connection configuration through an interface with the source base station, where information of the interface is pre-stored in the core network element, and the user terminal establishes a connection with the core network element through the source base station when establishing a connection last time.
The detailed implementation of the embodiment of the present invention may refer to the specific embodiment of the connection recovery method shown in fig. 2, and is not described herein again.
Fig. 6 is a schematic structural diagram of another connection recovery apparatus according to an embodiment of the present invention.
The connection resuming apparatus 60 may be used on the user terminal side, and the connection resuming apparatus 60 may include a resume request transmitting unit 601 and a connection resuming unit 602.
The recovery request sending unit 601 is adapted to send a connection recovery request to a target base station, where the connection recovery request carries a truncation recovery identifier, and the target base station obtains a first connection configuration of a user terminal during a last connection according to the truncation recovery identifier, and sends a connection recovery response to the user terminal;
the connection recovery unit 602 is adapted to receive the connection recovery response and send feedback for the connection recovery response according to the second connection configuration saved in advance to complete the connection.
In a specific implementation, the connection recovering apparatus 60 may further include a connection establishment signaling receiving unit (not shown) and a bearer establishing unit (not shown), where the connection establishment signaling receiving unit is adapted to receive the connection establishment signaling sent by the target base station when receiving the connection recovery response fails; and the bearing establishing unit is suitable for establishing a signaling wireless bearing according to the connection establishing signaling and feeding back the signaling wireless bearing to the target base station so as to establish new connection.
The specific implementation of the connection recovery apparatus 60 according to the embodiment of the present invention can refer to the specific implementation of the connection recovery method shown in fig. 3, and is not described herein again.
The embodiment of the invention also discloses a base station, which may include the connection recovery apparatus 50 in fig. 5.
The embodiment of the invention also discloses a terminal, which may comprise the connection recovery device 60 in fig. 6. The terminal may include, but is not limited to, any communication enabled terminal such as a cell phone, a tablet computer, a computer, etc.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (16)
1. A method for connection restoration, comprising:
receiving a connection recovery request sent by a user terminal, wherein the connection recovery request carries a truncation recovery identifier;
sending an acquisition request to a plurality of base stations according to the base station identifier in the truncation recovery identifier so as to acquire a first connection configuration of the user terminal during last connection;
when the first connection configuration is acquired, sending a connection recovery response to the user terminal according to at least one part of the first connection configuration;
and when receiving a feedback of the user terminal for the connection recovery response, sending a path switching request to a core network element to complete path switching, where the first connection configuration, the second connection configuration stored in the user terminal, and at least a part of parameters configured by the user terminal during the last connection and stored in the core network element side together form a context of the user terminal.
2. The connection restoration method according to claim 1, further comprising:
notifying a source base station that transmitted the first connection configuration, so that the source base station releases the first connection configuration.
3. The connection restoration method according to claim 2, wherein the first connection configuration is obtained and the source base station is notified via an X2 interface.
4. The connection restoration method according to claim 1, further comprising:
and if the first connection configuration is failed to be acquired, sending a connection establishment signaling to the user terminal so as to establish a new connection.
5. The connection restoration method according to claim 4, wherein in response to the establishment of the new connection, the core network element notifies the source base station to release the first connection configuration through an interface with the source base station, wherein information of the interface is stored in the core network element in advance, and the user terminal establishes a connection with the core network element through the source base station when establishing a connection last time.
6. A method for connection restoration, comprising:
sending a connection recovery request to a target base station, wherein the connection recovery request carries a truncation recovery identifier, and the target base station sends an acquisition request to a plurality of base stations according to the truncation recovery identifier, acquires a first connection configuration of a user terminal during last connection and sends a connection recovery response to the user terminal;
and when receiving the connection recovery response, recovering the connection according to a second connection configuration saved in advance, and sending feedback aiming at the connection recovery response, wherein the first connection configuration, the second connection configuration and at least one part of parameters, which are saved at a network element side of a core network and are configured when the user terminal is connected last time, form the context of the user terminal together.
7. The connection restoration method according to claim 6, further comprising:
when the connection recovery response is not received, receiving a connection establishment signaling sent by the target base station;
and establishing a signaling radio bearer according to the connection establishment signaling, and feeding back the signaling radio bearer to the target base station to establish a new connection.
8. A connection restoration device, comprising:
a recovery request receiving unit, adapted to receive a connection recovery request sent by a user terminal, where the connection recovery request carries a truncation recovery identifier;
an obtaining request sending unit, adapted to send obtaining requests to a plurality of base stations according to the base station identifier in the truncation restoration identifier, so as to obtain a first connection configuration of the user terminal during a last connection;
a connection restoration response sending unit, adapted to send a connection restoration response to the user terminal according to at least a part of the first connection configuration when the first connection configuration is obtained;
a path switching request sending unit, adapted to send a path switching request to a core network element to complete switching of a path when receiving a feedback of the connection recovery response from the user terminal, where the first connection configuration, the second connection configuration stored in the user terminal, and at least a part of parameters configured by the user terminal during the last connection stored in the core network element side jointly form a context of the user terminal.
9. The connection restoration device according to claim 8, further comprising:
a release notification unit adapted to notify a source base station that transmitted the first connection configuration, so that the source base station releases the first connection configuration.
10. The connection restoration apparatus according to claim 9, wherein the first connection configuration is obtained and the source base station is notified through an X2 interface.
11. The connection restoration device according to claim 8, further comprising:
and the connection establishing unit is suitable for sending a connection establishing signaling to the user terminal to establish a new connection when the first connection configuration is failed to be acquired.
12. The apparatus according to claim 11, wherein in response to the establishment of the new connection, the core network element notifies the source base station to release the first connection configuration through an interface with the source base station, wherein information of the interface is stored in the core network element in advance, and the user terminal establishes a connection with the core network element through the source base station when establishing a connection last time.
13. A connection restoration device, comprising:
a recovery request sending unit, adapted to send a connection recovery request to a target base station, where the connection recovery request carries a truncation recovery identifier, and the target base station sends an acquisition request to multiple base stations according to the truncation recovery identifier, acquires a first connection configuration of a user terminal during a last connection, and sends a connection recovery response to the user terminal;
and a connection recovery unit adapted to receive the connection recovery response and send a feedback for the connection recovery response according to a second connection configuration saved in advance to complete connection, where the first connection configuration, the second connection configuration, and at least a part of parameters configured when the user terminal is connected last, which are saved at a network element side of a core network, together form a context of the user terminal.
14. The connection restoration device according to claim 13, further comprising:
a connection establishment signaling receiving unit, adapted to receive the connection establishment signaling sent by the target base station when receiving the connection recovery response fails;
and the bearing establishing unit is suitable for establishing a signaling wireless bearing according to the connection establishing signaling and feeding back the signaling wireless bearing to the target base station so as to establish new connection.
15. A base station, characterized in that it comprises a connection recovery device according to any one of claims 8 to 12.
16. A user terminal, characterized in that it comprises a connection restoration device according to claim 13 or 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610665331.6A CN108307452B (en) | 2016-08-12 | 2016-08-12 | Connection recovery method and device, base station and user terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610665331.6A CN108307452B (en) | 2016-08-12 | 2016-08-12 | Connection recovery method and device, base station and user terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108307452A CN108307452A (en) | 2018-07-20 |
| CN108307452B true CN108307452B (en) | 2020-10-23 |
Family
ID=62871039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610665331.6A Active CN108307452B (en) | 2016-08-12 | 2016-08-12 | Connection recovery method and device, base station and user terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108307452B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SG11202008494PA (en) * | 2018-08-17 | 2020-10-29 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Information transmission method and apparatus, and communication device |
| CN111479284B (en) * | 2019-01-24 | 2022-02-08 | 大唐移动通信设备有限公司 | Sending method, monitoring method, base station and terminal for beam failure recovery response |
| CN113518476A (en) * | 2020-04-10 | 2021-10-19 | 华为技术有限公司 | Communication method and device |
| CN118647094A (en) * | 2023-03-10 | 2024-09-13 | 中国移动通信有限公司研究院 | Configuration processing method, device, terminal and network equipment |
| CN116405926B (en) * | 2023-03-28 | 2024-01-30 | 江苏亨鑫无线技术有限公司 | Method and system for acquiring 5G base station identifier from air interface |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101827428A (en) * | 2010-04-22 | 2010-09-08 | 新邮通信设备有限公司 | Method and relay for reducing data loss in radio link failure |
| CN102958194A (en) * | 2011-08-25 | 2013-03-06 | 中兴通讯股份有限公司 | Method, user equipment and system for maintaining large number of connections |
| CN103370957A (en) * | 2011-02-18 | 2013-10-23 | 捷讯研究有限公司 | Method and apparatus for avoiding in-device coexistence interference with preferred frequency notification |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120278634A1 (en) * | 2011-04-28 | 2012-11-01 | Nokia Corporation | Method and apparatus for secure access to execution context |
| CN103797854B (en) * | 2012-02-01 | 2017-04-05 | 富士通株式会社 | Wireless connection restoration methods, mobile communication system, user equipment and base station |
| CN103384396B (en) * | 2012-05-04 | 2018-02-27 | 中兴通讯股份有限公司 | Mobile terminal is redirected to the method, apparatus and system of objective network |
-
2016
- 2016-08-12 CN CN201610665331.6A patent/CN108307452B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101827428A (en) * | 2010-04-22 | 2010-09-08 | 新邮通信设备有限公司 | Method and relay for reducing data loss in radio link failure |
| CN103370957A (en) * | 2011-02-18 | 2013-10-23 | 捷讯研究有限公司 | Method and apparatus for avoiding in-device coexistence interference with preferred frequency notification |
| CN102958194A (en) * | 2011-08-25 | 2013-03-06 | 中兴通讯股份有限公司 | Method, user equipment and system for maintaining large number of connections |
Non-Patent Citations (2)
| Title |
|---|
| Discussion on truncated RESUME ID;Samsung;《3GPP TSG-RAN WG3 Meeting #92，R3-161431》;20160527;全文 * |
| RRC Resume ID for non-NB-UEs;Ericsson;《3GPP TSG-RAN WG2 #93bis，R2-162845》;20160415;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108307452A (en) | 2018-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110139387B (en) | Uplink small data transmission method, network side DU and network side CU | |
| EP3675579B1 (en) | Data scheduling methods, apparatus and computer-readable mediums | |
| EP3573356B1 (en) | Method for controlling states of terminal device, terminal device, and network device | |
| US10674363B2 (en) | Access control method, user equipment, and network device | |
| CN107454679B (en) | Apparatus and method for handling rrc connection recovery procedure | |
| CN108307452B (en) | Connection recovery method and device, base station and user terminal | |
| CN107251642B (en) | User device, base station, and connection establishment method | |
| CN107666691B (en) | Terminal state conversion method and device | |
| KR102378376B1 (en) | Location information reporting method and device | |
| EP4351225A2 (en) | Method, apparatus and device for allowing terminal to move between 4g and 5g networks | |
| US10512011B2 (en) | Control node, network node, and methods performed therein | |
| CN112040567B (en) | Method and device for recovering RRC connection and computer storage medium | |
| CN108391321B (en) | Apparatus and method for handling status mismatch in wireless communication system | |
| US10448297B2 (en) | Network node, mobile terminal, base station and methods performed therein | |
| EP3550885B1 (en) | Communication method and access network device | |
| CN110999440B (en) | Radio base station and radio communication method | |
| US20180206248A1 (en) | Radio resource control rrc connection releasing method and apparatus | |
| WO2018127030A1 (en) | Method and device for notification of information about ran-based notification area | |
| CN108617033B (en) | Communication method, terminal and access network equipment | |
| US20190007991A1 (en) | Method and device for monitoring radio resource control procedure | |
| CN109246792B (en) | Wireless communication method and device, computer readable storage medium and user terminal | |
| CN108353452B (en) | User device, base station, and connection establishment method | |
| CN107371238B (en) | Paging method and device | |
| CN111294741A (en) | Method and device for extracting and sending service information, terminal and base station | |
| JP6994040B2 (en) | Connection release method and equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |