CN112153760A - Connection recovery method, device and storage medium - Google Patents
Connection recovery method, device and storage medium Download PDFInfo
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- H04W76/19—Connection re-establishment
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
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Abstract
The application discloses a connection recovery method, a connection recovery device and a storage medium. The method comprises the following steps: when the mobile terminal is converted from the inactive state to the active state, sending an RRC connection recovery request to the base station; the recovery RRC connection request comprises a random access preamble and a request message; receiving an RRC connection recovery command fed back by the base station; the RRC connection recovery instruction comprises an instruction message, and the instruction message is generated according to the request message after the base station determines that the mobile terminal conflict is successfully solved according to the random access preamble; and recovering the RRC connection according to the instruction message, thereby shortening the connection process and reducing the power consumption of the control plane.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a connection recovery method, apparatus, and storage medium.
Background
Currently, a Radio Resource Control Inactive (RRC _ Inactive) is introduced into a 5G wireless system (New Radio, NR) system to address mtc (massive Machine Type of Communication) services in 5G. When a mobile terminal (UE) is switched from an RRC _ INACTIVE state to a Radio Resource Control activated state (RRC _ Connected), RRC (Radio Resource Control) connection needs to be restored.
The recovery of RRC connection is generally completed in a RACH (Random Access Channel) procedure, whereas the RACH procedure in the prior art includes four interactive steps, i.e., the UE sends a preamble to the base station gsnodeb; after detecting that the lead code does not conflict with other UE, the gNodeB feeds back a response to the UE and simultaneously feeds back the resource of the UE for sending the MSG3 in the next step; the UE sends MSG3 to gNodeB, and the MSG3 has RRC connection recovery request; after receiving the MSG3, the gNodeB feeds back MSG4 to the UE, and the MSG4 has an RRC connection restoration command to restore the RRC connection to the UE.
The core requirement of the mtc service is to save power, but when the UE has a battery life of more than ten years, the number of accumulated RACH times is large, and each RACH requires four-step interaction between the UE and the gnnodeb, which may result in large power consumption of the control plane and may not meet the power saving requirement of the mtc service.
Disclosure of Invention
Embodiments of the present application provide a connection recovery method, apparatus, and storage medium, which can shorten a connection process and reduce power consumption of a control plane.
In a first aspect, an embodiment of the present application provides a connection recovery method, which is applied to a mobile terminal, and the method includes:
when the mobile terminal is converted from the inactive state to the active state, sending an RRC connection recovery request to the base station; the recovery RRC connection request comprises a random access preamble and a request message;
receiving an RRC connection recovery command fed back by the base station; the RRC connection recovery instruction comprises an instruction message, and the instruction message is generated according to the request message after the base station determines that the mobile terminal conflict is successfully solved according to the random access preamble;
and recovering the RRC connection according to the instruction message.
In some embodiments of the present application, the request to resume RRC connection further includes a terminal identity of the mobile terminal; the instruction message is generated according to the request message after the base station determines that the mobile terminal conflict is successfully solved according to the random access preamble and the terminal identification code.
In some embodiments of the present application, the resume RRC connection request further includes PUSCH resources and a first demodulation reference signal; the PUSCH resource is used for the base station to acquire the request message, and the first demodulation reference signal is used for the base station to demodulate the request message.
In some embodiments of the present application, the resume RRC connection instruction includes PDSCH resources and a second demodulation reference signal;
the recovering the RRC connection according to the instruction message specifically includes:
acquiring the instruction message according to the PDSCH resource;
and demodulating the instruction message according to the second demodulation reference signal to recover RRC connection.
In some embodiments of the present application, the resume RRC connection instruction further includes the request message;
the recovering the RRC connection according to the instruction message specifically includes:
and when the request message in the RRC connection recovering instruction is received within a preset time length, determining that the conflict is successfully solved, and recovering the RRC connection according to the instruction message.
In some embodiments of the present application, the method further comprises:
and when the request message in the RRC connection recovery instruction is not received within the preset time length, determining that the conflict resolution fails and recovering the RRC connection fails.
In a second aspect, an embodiment of the present application further provides a connection recovery method, which is applied to a base station, and the method includes:
when a mobile terminal is converted from an inactive state to an active state, receiving a RRC connection recovery request sent by the mobile terminal; the recovery RRC connection request comprises a random access preamble and a request message;
detecting whether the mobile terminal conflict resolution is successful or not according to the random access lead code;
if yes, generating an instruction message according to the request message;
and feeding back an RRC connection recovery instruction comprising the instruction message to the mobile terminal to enable the mobile terminal to recover the RRC connection.
In a third aspect, an embodiment of the present application further provides a connection recovery apparatus, which is applied to a mobile terminal, and the apparatus includes:
the request sending module is used for sending an RRC connection recovery request to the base station when the mobile terminal is converted from the non-activated state to the activated state; the recovery RRC connection request comprises a random access preamble and a request message;
the command receiving module is used for receiving an RRC connection recovery command fed back by the base station; the RRC connection recovery instruction comprises an instruction message, and the instruction message is generated according to the request message after the base station determines that the mobile terminal conflict is successfully solved according to the random access preamble; and the number of the first and second groups,
and the connection recovery module is used for recovering the RRC connection according to the instruction message.
In a fourth aspect, an embodiment of the present application further provides a connection recovery apparatus, which is applied to a base station, and the apparatus includes:
the request receiving module is used for receiving an RRC connection recovery request sent by the mobile terminal when the mobile terminal is converted from an inactive state to an active state; the recovery RRC connection request comprises a random access preamble and a request message;
a detection module, configured to detect whether the mobile terminal conflict resolution is successful according to the random access preamble;
a generating module, configured to generate an instruction message according to the request message when it is determined that the mobile terminal successfully resolves the conflict;
and the instruction feedback module is used for feeding back an RRC connection recovery instruction comprising the instruction message to the mobile terminal so that the mobile terminal recovers RRC connection.
In a fifth aspect, the present application further provides a computer-readable storage medium, where a plurality of instructions are stored, and the instructions are adapted to be loaded by a processor to perform any one of the above connection recovery methods.
The connection recovery method, the device and the storage medium provided by the application can be used for sending a RRC connection recovery request to a base station by the mobile terminal when the mobile terminal is converted from an inactive state to an active state, wherein the RRC connection recovery request comprises a random access lead code and a request message, and after the base station determines that the mobile terminal conflicts are successfully solved according to the random access lead code, the base station feeds back an instruction message to the mobile terminal according to the request message, so that the mobile terminal recovers the RRC connection according to the instruction message, the four-step interaction process in the prior art is shortened to a two-step interaction process, the power consumption of a control plane is effectively reduced for an RACH process with huge times, and the power saving requirement of an mMTC service is met.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic flowchart of a connection recovery method according to an embodiment of the present application;
fig. 2 is a schematic diagram of RRC state transition in a connection recovery method according to an embodiment of the present application;
fig. 3 is a timing diagram of a connection recovery method according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a connection recovery apparatus according to an embodiment of the present application;
fig. 5 is another schematic flow chart of a connection recovery method according to an embodiment of the present application;
fig. 6 is another schematic structural diagram of a connection recovery apparatus according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application;
fig. 8 is another schematic structural diagram of a mobile terminal according to an embodiment of the present application.
Detailed Description
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 only a part of the embodiments of the present application, and not all of the 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.
A connection recovery method is applied to a mobile terminal, and comprises the following steps: when the mobile terminal is converted from the inactive state to the active state, sending an RRC connection recovery request to the base station; the recovery RRC connection request comprises a random access preamble and a request message; receiving an RRC connection recovery command fed back by the base station; the RRC connection recovery instruction comprises an instruction message, and the instruction message is generated according to the request message after the base station determines that the mobile terminal conflict is successfully solved according to the random access preamble; and recovering the RRC connection according to the instruction message.
As shown in fig. 1, fig. 1 is a schematic flowchart of a connection recovery method provided in an embodiment of the present application, where the connection recovery method is applied to a mobile terminal, and a specific flow of the connection recovery method may be as follows:
101. when the mobile terminal is converted from the inactive state to the active state, sending an RRC connection recovery request to the base station; the resume RRC connection request includes a random access preamble and a request message.
The RRC states of the 5G NR include an RRC _ CONNECTED state, an RRC _ INACTIVE state, and an RRC _ IDLE state (radio resource control IDLE state), as shown in fig. 2. When the mobile terminal (UE) is in the RRC _ CONNECTED state, power is consumed, and the mobile terminal is in the RRC _ IDLE state, which saves power. When the mobile terminal has services, the mobile terminal must be converted from the RRC _ IDLE state to the RRC _ CONNECTED state, and this process includes a series of control plane processes including RRC connection, and NG interface signaling and NAS signaling connection, which results in huge power consumption consumed by the mobile terminal. Therefore, when the mobile terminal is switched from the RRC _ CONNECTED state to the RRC _ INACTIVE state, the context of the mobile terminal is simultaneously stored in the mobile terminal, the gRAN (5G access network) and the CN (5G core network), so that when the mobile terminal is switched from the RRC _ INACTIVE state to the RRC _ CONNECTED state, only the RRC connection needs to be recovered, data can be immediately transmitted, the control plane process is shortened, and the purpose of saving power is achieved.
In the embodiment of the present invention, on the basis of the mobile terminal being converted from the RRC _ INACTIVE state to the activated RRC _ CONNECTED state, the control plane process is further shortened, that is, as shown in fig. 3, the mobile terminal 31 directly sends the RRC connection recovery request MSG a to the base station 32, where the RRC connection recovery request MSG a includes the random access Preamble and the request message RRCResumeRequest. The random access Preamble is a Preamble randomly selected by the mobile terminal 31 within a certain range, and is used for sending the Preamble to the base station 32 to solve the collision problem. The request message RRCResumeRequest may also carry a terminal identification code of the mobile terminal, and is also used to send to the base station 32 to solve the collision problem.
In addition, the mobile terminal 31 needs to preset the PUSCH resource to request the MSG a to send the PUSCH resource to the base station 32 by recovering the RRC connection, and the base station 32 obtains the request message RRCResumeRequest through the PUSCH resource. Meanwhile, the recovery RRC connection request MSG a further includes a first demodulation reference signal DMRS1, and the base station 31 may demodulate the request message RRCResumeRequest according to the first demodulation reference signal DMRS 1.
102. Receiving an RRC connection recovery command fed back by the base station; the RRC connection recovery instruction comprises an instruction message, and the instruction message is generated according to the request message after the base station determines that the mobile terminal conflict is successfully solved according to the random access preamble.
In the embodiment of the present invention, as shown in fig. 3, after receiving the RRC connection recovery request MSG a, the base station 32 first detects whether the random access Preamble in the RRC connection recovery request MSG a collides with preambles of other mobile terminals. Since the RRC connection resumption request MSG a also has a terminal id, which is a unique id of the mobile terminal 31, the terminal id can also be used to solve the collision problem. After the base station 32 detects that the random access Preamble is not in conflict, it also detects whether the mobile terminal 31 is in conflict with other mobile terminals according to the terminal identification code, and if no conflict exists, it is determined that the conflict resolution of the mobile terminal 31 is successful. The base station 32 analyzes the request message RRCResumeRequest, generates an instruction message RRCResume, and adds the instruction message RRCResume to the RRC connection recovery instruction MSG B and feeds back the instruction message RRCResume to the mobile terminal 31.
In addition, the base station 32 adds the PDSCH resources and the second demodulation reference signal DMRS2 to the recovery RRC connection command MSG B, and feeds back the result to the mobile terminal 31 together with the command message RRCResume. The PDSCH resource is used for the mobile terminal 31 to acquire the command message rrcresum, and the second demodulation reference signal DMRS2 is used for the mobile terminal 31 to demodulate the command message rrcresum.
Meanwhile, when the base station 32 feeds back the RRC connection restoration command MSG B, the request message RRCResumeRequest in the RRC connection restoration request MSG a is added to the RRC connection restoration command MSG B in the MAC CE (control unit) of the MAC (media access control) layer, so that the request message RRCResumeRequest corresponds to the command message RRCResume, and is recognized by the mobile terminal 31.
103. And recovering the RRC connection according to the instruction message.
In the embodiment of the present invention, since the RRC connection recovery command MSG B fed back by the base station 32 has the command message rrcreesume corresponding to the request message rrcreesurequest, after receiving the RRC connection recovery command MSG B, the mobile terminal 31 detects the request message rrcreesurequest in the RRC connection recovery command MSG B. If the mobile terminal 31 receives the request message RRCResumeRequest in the RRC connection recovery instruction MSG B within the preset time length and detects that the request message RRCResumeRequest in the RRC connection recovery instruction MSG B is the same as the request message RRCResumeRequest in the RRC connection recovery request MSG a sent by the mobile terminal, it is determined that the conflict resolution is successful, and the RRC connection is recovered. If the mobile terminal 31 does not receive the request message RRCResumeRequest in the RRC connection recovery instruction MSG B within the preset time, it determines that the conflict resolution fails, that is, the random access fails, and the RRC connection recovery fails.
After determining that the conflict resolution is successful, the mobile terminal 31 acquires the command message rrcresum according to the PDSCH resource in the recovery RRC connection command MSG B, and analyzes the command message rrcresum according to the second demodulation reference signal DMRS2 to perform an RRC connection recovery operation.
According to the connection recovery method provided by the application, when the mobile terminal is switched from the inactive state to the active state, the mobile terminal sends the RRC connection recovery request to the base station, the RRC connection recovery request comprises the random access lead code and the request message, and after the base station determines that the mobile terminal conflict is successfully solved according to the random access lead code, the base station feeds back the instruction message to the mobile terminal according to the request message, so that the mobile terminal recovers the RRC connection according to the instruction message, the four-step interaction process in the prior art is shortened to the two-step interaction process, the power consumption of a control plane is effectively reduced for the RACH process with large times, and the power saving requirement of the mMTC service is met.
The present embodiment will be further described from the perspective of a connection restoration apparatus that may be integrated in a mobile terminal according to the method described in the above embodiment.
Referring to fig. 4, fig. 4 specifically illustrates a connection recovery apparatus according to an embodiment of the present application, where the connection recovery apparatus may include: a request sending module 41, an instruction receiving module 42 and a connection restoring module 43.
(1) Request sending module 41
A request sending module 41, configured to send an RRC connection recovery request to the base station when the mobile terminal is switched from the inactive state to the active state; the resume RRC connection request includes a random access preamble and a request message.
(2) Instruction receiving module 42
An instruction receiving module 42, configured to receive an RRC connection recovery instruction fed back by the base station; the RRC connection recovery instruction comprises an instruction message, and the instruction message is generated according to the request message after the base station determines that the mobile terminal conflict is successfully solved according to the random access preamble.
(3) Connection restoration module 43
And a connection recovery module 43, configured to recover the RRC connection according to the instruction message.
In some embodiments of the present application, the resume RRC connection request further includes a terminal identity of the mobile terminal; the instruction message is generated according to the request message after the base station determines that the mobile terminal conflict is successfully solved according to the random access preamble and the terminal identification code.
In some embodiments of the present application, the resume RRC connection request further comprises PUSCH resources and a first demodulation reference signal; the PUSCH resource is used for the base station to acquire the request message, and the first demodulation reference signal is used for the base station to demodulate the request message.
In some embodiments of the present application, the resume RRC connection instruction includes PDSCH resources and a second demodulation reference signal;
the connection restoration module 43 is further configured to:
acquiring the instruction message according to the PDSCH resource;
and demodulating the instruction message according to the second demodulation reference signal to recover RRC connection.
In some embodiments of the present application, the resume RRC connection instruction further includes the request message;
the connection restoration module 43 is further configured to:
and when the request message in the RRC connection recovering instruction is received within a preset time length, determining that the conflict is successfully solved, and recovering the RRC connection according to the instruction message.
In some embodiments of the present application, the apparatus further includes a connection failure module, where the connection failure module is specifically configured to:
and when the request message in the RRC connection recovery instruction is not received within the preset time length, determining that the conflict resolution fails and recovering the RRC connection fails.
Therefore, the connection recovery device provided by the application can send a request for recovering the RRC connection to the base station when the mobile terminal is switched from the inactive state to the active state, the request for recovering the RRC connection comprises the random access lead code and the request message, and the base station feeds back the instruction message to the mobile terminal according to the request message after determining that the mobile terminal is successfully solved according to the random access lead code, so that the mobile terminal recovers the RRC connection according to the instruction message, thereby shortening the four-step interaction process in the prior art to the two-step interaction process, effectively reducing the power consumption of a control plane for the RACH process with huge times, and meeting the power saving requirement of the mMTC service.
As shown in fig. 5, fig. 5 is a schematic flowchart of a connection recovery method provided in this embodiment, where the connection recovery method is applied to a base station, and a specific flow of the connection recovery method may be as follows:
501. when a mobile terminal is converted from an inactive state to an active state, receiving a RRC connection recovery request sent by the mobile terminal; the resume RRC connection request includes a random access preamble and a request message.
In the embodiment of the present invention, on the basis of the mobile terminal being converted from the RRC _ INACTIVE state to the activated RRC _ CONNECTED state, the control plane process is further shortened, that is, as shown in fig. 3, the mobile terminal 31 directly sends the RRC connection recovery request MSG a to the base station 32, where the RRC connection recovery request MSG a includes the random access Preamble and the request message RRCResumeRequest. The random access Preamble is a Preamble randomly selected by the mobile terminal 31 within a certain range, and is used for sending the Preamble to the base station 32 to solve the collision problem. The request message RRCResumeRequest may also carry a terminal identification code of the mobile terminal, and is also used to send to the base station 32 to solve the collision problem.
In addition, the mobile terminal 31 needs to preset the PUSCH resource to request the MSG a to send the PUSCH resource to the base station 32 by recovering the RRC connection, and the base station 32 obtains the request message RRCResumeRequest through the PUSCH resource. Meanwhile, the recovery RRC connection request MSG a further includes a first demodulation reference signal DMRS1, and the base station 31 may demodulate the request message RRCResumeRequest according to the first demodulation reference signal DMRS 1.
502. And detecting whether the mobile terminal conflict resolution is successful or not according to the random access lead code.
503. And generating an instruction message according to the request message when the mobile terminal conflict is successfully solved.
In the embodiment of the present invention, as shown in fig. 3, after receiving the RRC connection recovery request MSG a, the base station 32 first detects whether the random access Preamble in the RRC connection recovery request MSG a collides with preambles of other mobile terminals. Since the RRC connection resumption request MSG a also has a terminal id, which is a unique id of the mobile terminal 31, the terminal id can also be used to solve the collision problem. After the base station 32 detects that the random access Preamble is not in conflict, it also detects whether the mobile terminal 31 is in conflict with other mobile terminals according to the terminal identification code, and if no conflict exists, it is determined that the conflict resolution of the mobile terminal 31 is successful. The base station 32 analyzes the request message RRCResumeRequest, generates an instruction message RRCResume, and adds the instruction message RRCResume to the RRC connection recovery instruction MSG B and feeds back the instruction message RRCResume to the mobile terminal 31.
504. And feeding back an RRC connection recovery instruction comprising the instruction message to the mobile terminal to enable the mobile terminal to recover the RRC connection.
In the embodiment of the present invention, the base station 32 further adds the PDSCH resources and the second demodulation reference signal DMRS2 to the recovery RRC connection command MSG B, and feeds back the command message rrcresum to the mobile terminal 31.
Meanwhile, when the base station 32 feeds back the RRC connection restoration command MSG B, the request message RRCResumeRequest in the RRC connection restoration request MSG a is added to the RRC connection restoration command MSG B in the MAC CE of the MAC layer, so that the request message RRCResumeRequest corresponds to the command message RRCResume, and is recognized by the mobile terminal 31.
Since the RRC connection recovery command MSG B fed back by the base station 32 includes the command message rrcreesumit corresponding to the request message rrcreesureq, the mobile terminal 31 detects the request message rrcreesureq in the RRC connection recovery command MSG B after receiving the RRC connection recovery command MSG B. If the mobile terminal 31 receives the request message RRCResumeRequest in the RRC connection recovery instruction MSG B within the preset time length and detects that the request message RRCResumeRequest in the RRC connection recovery instruction MSG B is the same as the request message RRCResumeRequest in the RRC connection recovery request MSG a sent by the mobile terminal, it is determined that the conflict resolution is successful, and the RRC connection is recovered. If the mobile terminal 31 does not receive the request message RRCResumeRequest in the RRC connection recovery instruction MSG B within the preset time, it determines that the conflict resolution fails, that is, the random access fails, and the RRC connection recovery fails.
After determining that the conflict resolution is successful, the mobile terminal 31 acquires the command message rrcresum according to the PDSCH resource in the recovery RRC connection command MSG B, and analyzes the command message rrcresum according to the second demodulation reference signal DMRS2 to perform an RRC connection recovery operation.
According to the connection recovery method provided by the application, when the mobile terminal is switched from the inactive state to the active state, the mobile terminal sends the RRC connection recovery request to the base station, the RRC connection recovery request comprises the random access lead code and the request message, and after the base station determines that the mobile terminal conflict is successfully solved according to the random access lead code, the base station feeds back the instruction message to the mobile terminal according to the request message, so that the mobile terminal recovers the RRC connection according to the instruction message, the four-step interaction process in the prior art is shortened to the two-step interaction process, the power consumption of a control plane is effectively reduced for the RACH process with large times, and the power saving requirement of the mMTC service is met.
The present embodiment will be further described from the perspective of a connection recovery device that may be integrated into a base station, according to the methods described in the above embodiments.
Referring to fig. 6, fig. 6 specifically illustrates a connection recovery apparatus according to an embodiment of the present application, where the connection recovery apparatus may include: a request receiving module 61, a detection module 62, a generation module 63 and an instruction feedback module 64.
(1) Request receiving module 61
A request receiving module 61, configured to receive an RRC connection recovery request sent by a mobile terminal when the mobile terminal is switched from an inactive state to an active state; the resume RRC connection request includes a random access preamble and a request message.
(2) Detection module 62
A detecting module 62, configured to detect whether the mobile terminal conflict resolution is successful according to the random access preamble.
(3) Generating module 63
And a generating module 63, configured to generate an instruction message according to the request message when it is determined that the mobile terminal successfully resolves the conflict.
(4) Command feedback module 64
And an instruction feedback module 64, configured to feed back an RRC connection recovery instruction including the instruction message to the mobile terminal, so that the mobile terminal recovers RRC connection.
The connection recovery device provided by the application can be used for sending a RRC connection recovery request to a base station when a mobile terminal is converted from an inactive state to an active state, wherein the RRC connection recovery request comprises a random access lead code and a request message, and after the base station determines that the mobile terminal conflicts and is successfully solved according to the random access lead code, the base station feeds back an instruction message to the mobile terminal according to the request message, so that the mobile terminal recovers the RRC connection according to the instruction message, the four-step interaction process in the prior art is shortened to a two-step interaction process, the power consumption of a control plane is effectively reduced for an RACH process with huge times, and the power saving requirement of mMTC service is met.
In addition, the embodiment of the application further provides a mobile terminal, and the mobile terminal can be a smart phone, a tablet computer and other devices. As shown in fig. 7, the mobile terminal 400 includes a processor 401, a memory 402. The processor 401 is electrically connected to the memory 402.
The processor 401 is a control center of the mobile terminal 400, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by running or loading an application program stored in the memory 402 and calling data stored in the memory 402, thereby integrally monitoring the mobile terminal.
In this embodiment, the processor 401 in the mobile terminal 400 loads instructions corresponding to processes of one or more application programs into the memory 402 according to the following steps, and the processor 401 runs the application programs stored in the memory 402, thereby implementing various functions:
when the mobile terminal is converted from the inactive state to the active state, sending an RRC connection recovery request to the base station; the recovery RRC connection request comprises a random access preamble and a request message;
receiving an RRC connection recovery command fed back by the base station; the RRC connection recovery instruction comprises an instruction message, and the instruction message is generated according to the request message after the base station determines that the mobile terminal conflict is successfully solved according to the random access preamble;
and recovering the RRC connection according to the instruction message.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application. The mobile terminal 300 may include components such as RF circuitry 310, memory 320 including one or more computer-readable storage media, input unit 330, display unit 340, sensors 350, audio circuitry 360, speaker 361, microphone 362, transmission module 370, a processor 380 including one or more processing cores, and a power supply 390. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 8 is not intended to be limiting of mobile terminals and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
The RF circuit 310 is used for receiving and transmitting electromagnetic waves, and performing interconversion between the electromagnetic waves and electrical signals, thereby communicating with a communication network or other devices. RF circuitry 310 may include various existing circuit elements for performing these functions, such as an antenna, a cellular communication radio frequency transceiver, a millimeter wave radio frequency transceiver, a WIFI/BT transceiver, a GPS transceiver, a digital signal processor, an encryption/decryption chip, a Subscriber Identity Module (SIM) card, memory, and so forth. RF circuit 310 may communicate with various networks such as the internet, an intranet, a wireless network, or with other devices over a wireless network. The wireless network may comprise a cellular telephone network, a wireless local area network, or a metropolitan area network. The Wireless network may use various Communication standards, protocols, and technologies, including, but not limited to, Global System for Mobile Communication (GSM), Enhanced Data GSM Environment (EDGE), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Wireless Fidelity (Wi-Fi) (e.g., Institute of Electrical and Electronics Engineers (IEEE) standard IEEE802.11 a, IEEE802.11 b, IEEE802.11g, and/or IEEE802.11 n), Voice over Internet Protocol (VoIP), world wide mail Access (Microwave Access for micro), wimax-1, other suitable short message protocols, and any other suitable Protocol for instant messaging, and may even include those protocols that have not yet been developed.
The memory 320 may be used to store software programs and modules, such as program instructions/modules corresponding to the connection recovery apparatus and method in the above-described embodiments, and the processor 380 executes various functional applications and data processing by running the software programs and modules stored in the memory 320, so as to implement the control function of the mobile terminal. The memory 320 may include high speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 320 may further include memory located remotely from the processor 380, which may be connected to the mobile terminal 300 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input unit 330 may be used to receive input numeric or character information and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control. In particular, the input unit 330 may include a touch-sensitive surface 331 as well as other input devices 332. The touch-sensitive surface 331, also referred to as a touch screen or touch pad, may collect touch operations by a user on or near the touch-sensitive surface 331 (e.g., operations by a user on or near the touch-sensitive surface 331 using a finger, a stylus, or any other suitable object or attachment), and drive the corresponding connection device according to a predetermined program. Alternatively, the touch sensitive surface 331 may comprise two parts, a touch detection means and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 380, and can receive and execute commands sent by the processor 380. In addition, the touch-sensitive surface 331 may be implemented using various types of resistive, capacitive, infrared, and surface acoustic waves. The input unit 330 may comprise other input devices 332 in addition to the touch sensitive surface 331. In particular, other input devices 332 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.
The display unit 340 may be used to display information input by or provided to the user and various graphical user interfaces of the mobile terminal 300, which may be made up of graphics, text, icons, video, and any combination thereof. The Display unit 340 may include a Display panel 341, and optionally, the Display panel 341 may be configured in the form of an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), or the like. Further, touch-sensitive surface 331 may overlay display panel 341, and when touch-sensitive surface 331 detects a touch operation thereon or thereabout, communicate to processor 380 to determine the type of touch event, and processor 380 then provides a corresponding visual output on display panel 341 in accordance with the type of touch event. Although in FIG. 8, touch-sensitive surface 331 and display panel 341 are implemented as two separate components for input and output functions, in some embodiments, touch-sensitive surface 331 and display panel 341 may be integrated for input and output functions.
The mobile terminal 300 may also include at least one sensor 350, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that may adjust the brightness of the display panel 341 according to the brightness of ambient light, and a proximity sensor that may turn off the display panel 341 and/or the backlight when the mobile terminal 300 is moved to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally, three axes), detect the magnitude and direction of gravity when the mobile terminal is stationary, and can be used for applications (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer and tapping) and the like for recognizing the attitude of the mobile terminal; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which may be further configured on the mobile terminal 300, detailed descriptions thereof are omitted.
An audio circuit 360, a speaker 361, and a microphone 362, the microphone 362 providing an audio interface between a user and the mobile terminal 300. The audio circuit 360 may transmit the electrical signal converted from the received audio data to the speaker 361, and the audio signal is converted by the speaker 361 and output; on the other hand, the microphone 362 converts the collected sound signal into an electrical signal, which is received by the audio circuit 360 and converted into audio data, which is then processed by the audio data output processor 380 and then transmitted to, for example, another mobile terminal via the RF circuit 310, or output to the memory 320 for further processing. The audio circuit 360 may also include an earbud jack to provide communication of a peripheral headset with the mobile terminal 300.
The mobile terminal 300 may help a user send and receive e-mails, browse webpages, access streaming media, and the like through the transmission module 370 (e.g., a WIFI module), which provides the user with wireless broadband internet access. Although fig. 8 shows the transmission module 370, it is understood that it does not belong to the essential constitution of the mobile terminal 300 and may be omitted entirely within the scope not changing the essence of the invention as needed.
The processor 380 is a control center of the mobile terminal 300, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal 300 and processes data by operating or executing software programs and/or modules stored in the memory 320 and calling data stored in the memory 320, thereby integrally monitoring the mobile terminal. Optionally, processor 380 may include one or more processing cores; in some embodiments, processor 380 may integrate an application processor, which primarily handles operating systems, user interfaces, applications, etc., and a modem processor, which primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 380.
The mobile terminal 300 also includes a power supply 390 (e.g., a battery) that provides power to the various components and, in some embodiments, may be logically coupled to the processor 380 via a power management system to manage charging, discharging, and power consumption management functions via the power management system. The power supply 390 may also include any component including one or more of a dc or ac power source, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.
Although not shown, the mobile terminal 300 may further include a camera (e.g., a front camera, a rear camera), a bluetooth module, etc., which will not be described herein. Specifically, in this embodiment, the display unit of the mobile terminal is a touch screen display, the mobile terminal further includes a memory, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include instructions for:
when the mobile terminal is converted from the inactive state to the active state, sending an RRC connection recovery request to the base station; the recovery RRC connection request comprises a random access preamble and a request message;
receiving an RRC connection recovery command fed back by the base station; the RRC connection recovery instruction comprises an instruction message, and the instruction message is generated according to the request message after the base station determines that the mobile terminal conflict is successfully solved according to the random access preamble;
and recovering the RRC connection according to the instruction message.
In specific implementation, the above modules may be implemented as independent entities, or may be combined arbitrarily to be implemented as the same or several entities, and specific implementation of the above modules may refer to the foregoing method embodiments, which are not described herein again.
It will be understood by those skilled in the art that all or part of the steps of the methods of the above embodiments may be performed by instructions or by associated hardware controlled by the instructions, which may be stored in a computer readable storage medium and loaded and executed by a processor. To this end, embodiments of the present invention provide a storage medium, in which a plurality of instructions are stored, and the instructions can be loaded by a processor to execute steps in any one of the connection recovery methods provided by the embodiments of the present invention.
Wherein the storage medium may include: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.
Since the instructions stored in the storage medium may execute the steps in any connection recovery method provided in the embodiments of the present invention, beneficial effects that can be achieved by any connection recovery method provided in the embodiments of the present invention may be achieved, which are detailed in the foregoing embodiments and will not be described herein again.
The above operations can be implemented in the foregoing embodiments, and are not described in detail herein.
In summary, although the present application has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.
Claims (10)
1. A connection recovery method applied to a mobile terminal, the method comprising:
when the mobile terminal is converted from the inactive state to the active state, sending an RRC connection recovery request to the base station; the recovery RRC connection request comprises a random access preamble and a request message;
receiving an RRC connection recovery command fed back by the base station; the RRC connection recovery instruction comprises an instruction message, and the instruction message is generated according to the request message after the base station determines that the mobile terminal conflict is successfully solved according to the random access preamble;
and recovering the RRC connection according to the instruction message.
2. The connection recovery method of claim 1, wherein the request to recover the RRC connection further comprises a terminal identification code of the mobile terminal; the instruction message is generated according to the request message after the base station determines that the mobile terminal conflict is successfully solved according to the random access preamble and the terminal identification code.
3. The connection recovery method according to claim 1, wherein the recovery RRC connection request further comprises PUSCH resources and a first demodulation reference signal; the PUSCH resource is used for the base station to acquire the request message, and the first demodulation reference signal is used for the base station to demodulate the request message.
4. The connection recovery method according to claim 1, wherein the recovery RRC connection command includes PDSCH resources and a second demodulation reference signal;
the recovering the RRC connection according to the instruction message specifically includes:
acquiring the instruction message according to the PDSCH resource;
and demodulating the instruction message according to the second demodulation reference signal to recover RRC connection.
5. The connection recovery method according to claim 1, wherein the command to recover the RRC connection further comprises the request message;
the recovering the RRC connection according to the instruction message specifically includes:
and when the request message in the RRC connection recovering instruction is received within a preset time length, determining that the conflict is successfully solved, and recovering the RRC connection according to the instruction message.
6. The connection restoration method according to claim 5, further comprising:
and when the request message in the RRC connection recovery instruction is not received within the preset time length, determining that the conflict resolution fails and recovering the RRC connection fails.
7. A method for connection recovery, applied to a base station, the method comprising:
when a mobile terminal is converted from an inactive state to an active state, receiving a RRC connection recovery request sent by the mobile terminal; the recovery RRC connection request comprises a random access preamble and a request message;
detecting whether the mobile terminal conflict resolution is successful or not according to the random access lead code;
if yes, generating an instruction message according to the request message;
and feeding back an RRC connection recovery instruction comprising the instruction message to the mobile terminal to enable the mobile terminal to recover the RRC connection.
8. A connection resuming apparatus, applied to a mobile terminal, the apparatus comprising:
the request sending module is used for sending an RRC connection recovery request to the base station when the mobile terminal is converted from the non-activated state to the activated state; the recovery RRC connection request comprises a random access preamble and a request message;
the command receiving module is used for receiving an RRC connection recovery command fed back by the base station; the RRC connection recovery instruction comprises an instruction message, and the instruction message is generated according to the request message after the base station determines that the mobile terminal conflict is successfully solved according to the random access preamble; and the number of the first and second groups,
and the connection recovery module is used for recovering the RRC connection according to the instruction message.
9. A connection recovery apparatus, applied to a base station, the apparatus comprising:
the request receiving module is used for receiving an RRC connection recovery request sent by the mobile terminal when the mobile terminal is converted from an inactive state to an active state; the recovery RRC connection request comprises a random access preamble and a request message;
a detection module, configured to detect whether the mobile terminal conflict resolution is successful according to the random access preamble;
a generating module, configured to generate an instruction message according to the request message when it is determined that the mobile terminal successfully resolves the conflict;
and the instruction feedback module is used for feeding back an RRC connection recovery instruction comprising the instruction message to the mobile terminal so that the mobile terminal recovers RRC connection.
10. A computer-readable storage medium having stored thereon a plurality of instructions adapted to be loaded by a processor to perform the connection restoration method of any one of claims 1 to 7.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180139778A1 (en) * | 2016-11-11 | 2018-05-17 | Chie-Ming Chou | Data packet delivery in rrc inactive state |
| WO2018126801A1 (en) * | 2017-01-04 | 2018-07-12 | 中兴通讯股份有限公司 | Data sending method and apparatus, and data receiving method and apparatus |
| CN110832917A (en) * | 2017-02-12 | 2020-02-21 | 鸿颖创新有限公司 | Mobility management for RRC disabled UEs |
| CN111316696A (en) * | 2017-11-16 | 2020-06-19 | 鸿颖创新有限公司 | Notification area configuration and management for radio access networks |
| CN111565470A (en) * | 2019-02-13 | 2020-08-21 | 苹果公司 | 2 step random access |
-
2020
- 2020-10-29 CN CN202011180251.4A patent/CN112153760A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180139778A1 (en) * | 2016-11-11 | 2018-05-17 | Chie-Ming Chou | Data packet delivery in rrc inactive state |
| WO2018126801A1 (en) * | 2017-01-04 | 2018-07-12 | 中兴通讯股份有限公司 | Data sending method and apparatus, and data receiving method and apparatus |
| CN110832917A (en) * | 2017-02-12 | 2020-02-21 | 鸿颖创新有限公司 | Mobility management for RRC disabled UEs |
| CN111316696A (en) * | 2017-11-16 | 2020-06-19 | 鸿颖创新有限公司 | Notification area configuration and management for radio access networks |
| CN111565470A (en) * | 2019-02-13 | 2020-08-21 | 苹果公司 | 2 step random access |
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