CN110225601B - RRC connection release method and device and terminal equipment - Google Patents
RRC connection release method and device and terminal equipment Download PDFInfo
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- CN110225601B CN110225601B CN201910433047.XA CN201910433047A CN110225601B CN 110225601 B CN110225601 B CN 110225601B CN 201910433047 A CN201910433047 A CN 201910433047A CN 110225601 B CN110225601 B CN 110225601B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/30—Connection release
- H04W76/38—Connection release triggered by timers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a method and a device for releasing RRC connection and terminal equipment. The RRC connection release method comprises the following steps: detecting whether data is sent or received within a preset connection release time; releasing the established first RRC connection when there is no transmission or reception of data within the connection release time; sending a tracking area update request message to a network device, wherein the tracking area update request message is used for notifying the network device that the first RRC connection is released; determining the number of times of sending the tracking area updating request message; and adjusting the connection release time according to the sending times and a preset time threshold. The method can reduce the standby power consumption of the terminal equipment and greatly prolong the endurance time of the terminal equipment.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method, an apparatus, and a terminal device for RRC connection release.
Background
With the continuous popularization of LTE (long term Evolution) networks, more and more users choose to use LTE networks for wireless communication.
In an LTE network, before a User Equipment (UE) and an Evolved Node B (eNodeB) perform data transmission, the UE needs to establish Radio Resource Control (RRC) connection with the eNodeB. After establishing the RRC connection, data interaction between the UE and the eNB is performed through the RRC connection. And when no data needs to be transmitted or interacted, the RRC connection can be released through an RRC connection release flow. Thereby causing the UE to transition from an RRC CONNECTED state (RRC _ CONNECTED) to an RRC IDLE state (RRC _ IDLE) state.
Currently, the LTE network only supports the RRC connection release procedure initiated by the eNB, that is, only supports the eNB sending an RRC connection release message (RRCConnectionRelease) to the UE to notify the UE to release the RRC connection. However, even if there is no user data for a long time, the eNB still does not release the RRC connection, so that the UE is always in the RRC connected state, and a large standby current is generated. As can be seen from the actual measurement data, the standby current of the UE in the RRC idle state is about 4mA, the standby current of the UE in the RRC connected state with DRX (Discontinuous Reception) configured is about 30mA, and the standby current of the UE in the RRC connected state without DRX configured is about 80 mA. Therefore, if the UE is kept in the RRC connected state for a long time, the power consumption of the UE will be increased seriously, which affects the endurance time of the UE.
The above information disclosed in this background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
In view of this, the present invention provides a method, an apparatus and a terminal device for RRC connection release.
Additional features and advantages of the invention will be set forth in the detailed description which follows, or may be learned by practice of the invention.
According to an aspect of the present invention, there is provided a RRC connection release method, including: detecting whether data is sent or received within a preset connection release time; releasing the established first RRC connection when there is no transmission or reception of data within the connection release time; sending a tracking area update request message to a network device, wherein the tracking area update request message is used for notifying the network device that the first RRC connection is released; determining the number of times of sending the tracking area updating request message; and adjusting the connection release time according to the sending times and a preset time threshold.
According to an embodiment of the present invention, releasing the established first RRC connection comprises: and after waiting for a random time, releasing the first RRC connection.
According to an embodiment of the present invention, before releasing the established first RRC connection, the method further includes: and sending an extended service request message to the network equipment.
According to an embodiment of the present invention, detecting whether there is data to be transmitted or received within a predetermined connection release time includes: after data is sent or received, starting a timer, wherein the duration of the timer is set as the connection release time; before the timer is overtime, when data is sent or received again, the timer is stopped, the duration of the timer is set as the connection release time, and the timer is restarted after the data is sent or received; and determining that there is no transmission or reception of data within the connection release time when the timer times out. According to an embodiment of the invention, the method further comprises: and before the timer is overtime, when a first RRC connection release message sent by the base station is received, releasing the first RRC connection.
According to an embodiment of the invention, the time threshold comprises: a first time threshold and a second time threshold, the first time threshold being greater than the second time threshold; adjusting the connection release time according to the sending times and a preset time threshold comprises: when the sending times are larger than the first time threshold, prolonging the connection release time; and when the sending times are less than the second time threshold, shortening the connection release time.
According to an embodiment of the present invention, before sending the tracking area update request message to the network device, the method further includes: sending an RRC connection request message to the base station to request establishment of a second RRC connection; wherein the tracking area update request message is sent based on the second RRC connection.
According to an embodiment of the invention, the method further comprises: and when receiving a second RRC connection release message sent by the base station, releasing the second RRC connection.
According to an aspect of the present invention, there is provided an RRC connection release apparatus, including: the data detection module is used for detecting whether data is sent or received within a preset connection release time; a connection release module, configured to release the established first RRC connection when the data detection module does not detect sending or receiving of data within the connection release time; a message sending module, configured to send a tracking area update request message to a network device, where the tracking area update request message is used to notify the network device that the first RRC connection has been released; the number determining module is used for determining the sending number of the tracking area updating request message; and the time adjusting module is used for adjusting the connection releasing time according to the sending times and a preset time threshold value.
According to an embodiment of the present invention, the data detection module includes: a timer starting unit, configured to start a timer after sending or receiving data, where a duration of the timer is set as the connection release time; a timer restarting unit, configured to stop the timer when data is sent or received again before the timer times out, set a duration of the timer as the connection release time, and restart the timer after data is sent or received; and a detection determining unit for determining that there is no transmission or reception of data within the connection release time when the timer times out.
According to an aspect of the present invention, there is provided a terminal device including: a processor and a transceiver; the processor is used for detecting whether data is sent or received within a preset connection release time; releasing the established first RRC connection when there is no transmission or reception of data within the connection release time; the transceiver is configured to send a tracking area update request message to a network device, where the tracking area update message is used to notify a base station and the network device that the first RRC connection has been released; the processor is further configured to determine the number of times of sending the tracking area update request message, and adjust the length of the connection release time according to the number of times of sending and a preset time threshold.
According to an embodiment of the present invention, the processor is configured to wait for a random time before releasing the first RRC connection.
According to an embodiment of the present invention, the transceiver is further configured to send an extended service request message to the network device before releasing the established first RRC connection.
According to an embodiment of the present invention, the processor is configured to start a timer after sending or receiving data, and a duration of the timer is set as the connection release time; when the timer is used for sending or receiving data again before the timer is overtime, stopping the timer, setting the duration of the timer as the connection release time, and restarting the timer after the data is sent or received; and when the timer times out, determining that no data is transmitted or received within the connection release time.
According to an embodiment of the present invention, the processor is further configured to release the first RRC connection when the transceiver receives a first RRC connection release message sent by the base station before the timer expires.
According to an embodiment of the invention, the time threshold comprises: a first time threshold and a second time threshold, the first time threshold being greater than the second time threshold; the processor is configured to extend the connection release time when the number of transmissions is greater than the first time threshold; and when the sending times are less than the second time threshold, shortening the connection release time.
According to an embodiment of the present invention, the transceiver is further configured to send an RRC connection request message to the base station to request establishment of a second RRC connection before sending the tracking area update request message to the network device; wherein the tracking area update request message is sent based on the second RRC connection.
According to an embodiment of the present invention, the processor is further configured to release the second RRC connection when the transceiver receives a second RRC connection release message sent by the base station.
According to the RRC connection release method provided by the embodiment of the invention, a mechanism for locally releasing the RRC connection is designed in the terminal equipment, so that the problem of high standby power consumption of the terminal equipment caused by the fact that the base station side does not release the RRC connection for a long time in the existing LTE network is solved. By adopting the method, the standby power consumption can be reduced by 85-96%, and the endurance time of the terminal equipment can be greatly prolonged.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
Fig. 1 is a schematic diagram illustrating a structure of a radio access control system according to an exemplary embodiment.
Fig. 2 is a flow chart illustrating a method for RRC connection release according to an example embodiment.
Fig. 3 is a signaling interaction flow diagram of a TAU procedure shown according to an example.
Fig. 4 is a signaling interaction flow diagram illustrating RRC connection establishment according to an example.
Fig. 5 is a block diagram illustrating an RRC connection release apparatus according to an example embodiment.
Fig. 6 is a block diagram illustrating another RRC connection release apparatus according to an example embodiment.
Fig. 7 is a schematic diagram illustrating a structure of a terminal device according to an exemplary embodiment.
Fig. 8 is a schematic diagram illustrating a system chip according to an example embodiment.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known structures, methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the invention.
Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. "and/or" describes the association relationship of the associated objects, and means that there may be three relationships, for example, a and/or B, and that there may be three cases of a alone, B alone, and a and B simultaneously. The symbol "/" generally indicates that the former and latter associated objects are in an "or" relationship. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
Fig. 1 is a schematic diagram illustrating a structure of a radio access control system according to an exemplary embodiment.
Referring to fig. 1, a radio access control system 1 includes: terminal equipment 11, base station 12 and network equipment 13.
The terminal device 11 in the present invention is a terminal device that can provide voice and/or data connectivity for a user, such as a handheld device with wireless connectivity capability or other processing device connected to a wireless modem. The terminal devices 11 may communicate with one or more core networks via a Radio Access Network (RAN), and may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminals such as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices that exchange voice and/or data with the RAN. Terminal devices 11 include, but are not limited to: personal Communication Service (PCS) phones, cordless phones, SIP phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and other terminal devices.
A Base Station (BS) device in the present invention, which may also be referred to as a Base Station, is a device deployed in a radio access network to provide a wireless communication function. Including but not limited to: devices providing Base Station functionality in 2G networks, such as Base Transceiver Stations (BTSs) and Base Station Controllers (BSCs), devices providing Base Station functionality in 3G networks, such as Node bs and Radio Network Controllers (RNCs), devices providing Base Station functionality in 4G networks, such as Evolved Node bs (enodebs), or devices providing Base Station functionality in WLANs (Wireless Local Area networks), such as Access Points (APs).
The network device 13 is a network element corresponding to a Control Plane (CP) in the radio access Control system 1, and the base station 12 is communicatively connected to the network device 13 through a wireless network or a wired network. The network device 13 may be, for example, a Mobility Management Entity (MME) in a 4G network, but the invention is not limited thereto.
Those skilled in the art will appreciate that the radio access control system 1 may include a plurality of terminal devices 11, a plurality of base stations 12, and a plurality of network devices 13. One base station 12 may communicate with a plurality of terminal apparatuses 11, and one network apparatus 13 may communicate with a plurality of base stations 12. Only one terminal device 11, one base station 12 and one MME are shown in fig. 1 for exemplary illustration.
After the terminal device 11 establishes the RRC connection with the base station 12, a Radio Bearer (RB) in the RRC connection may be used for signaling and/or data transmission. One RRC connection may include a plurality of Radio bearers, and the plurality of Radio bearers may include a plurality of Data Radio Bearers (DRBs) and a plurality of Signaling Radio Bearers (SRBs). Wherein, the DRB is used for transmitting data, and the SRB is used for transmitting signaling messages.
Corresponding to each DRB, there is also a one-to-one S1 bearer between the base station 12 and the Serving Gateway (SGW), and data transmission is performed between the base station 12 and the SGW through the S1 bearer. The DRBs used by the terminal device 11 and the S1 bearers used by the base station constitute Evolved universal terrestrial Radio Access network Radio Access bearers (E-RABs) between the terminal device 11 and the SGW, each E-RAB corresponds to each DRB one to one, and each S1 Bearer corresponds to each E-RAB one to one. The network device 13 stores the E-RAB id corresponding to each terminal device 11 and the corresponding relationship between the E-RAB id and the DRB.
Fig. 2 is a flow chart illustrating a method for RRC connection release according to an example embodiment. The method may be applied, for example, in the terminal device 11 as shown in fig. 1.
Referring jointly to fig. 1 and fig. 2, the RRC connection release method 10 includes:
in step S102, it is detected whether there is data transmission or reception within a preset connection release time.
That is, within the connection release time, it is detected whether uplink data to be transmitted (i.e., data transmitted by terminal apparatus 11 to base station 12) or downlink data (i.e., data transmitted by base station 12 to terminal apparatus 11) arrives.
The terminal device 11 as shown in fig. 1 establishes an RRC connection, referred to herein as a first RRC connection, with the base station 12 for data transmission. After the first RRC connection is established, the terminal device 11 enters an RRC connected state.
In the RRC connected state, for example, a Media Access Control (MAC) layer of the terminal device 11 may detect whether there is uplink data to be transmitted or whether there is downlink data to arrive within the preset connection release time. Wherein the data may include: traffic data of the user transmitted in the DRB, and signaling transmitted in the SRB.
The initial value of the connection release time may be set according to actual needs, and may be fixed as a fixed parameter in the terminal device 11, or may also be configured through an RRC connection establishment procedure or an RRC reconfiguration procedure.
In some embodiments, it may be detected whether there is uplink data to be transmitted or whether there is downlink data to arrive within a preset connection release time by setting a timer. For example, a Timer (e.g., Inactivity Timer) may be set in the MAC layer of the terminal device 11, the Timer may be set according to the connection release time, and the Timer may be started after the stored uplink data is transmitted or the downlink data is received. And before the timer is overtime, when uplink data to be sent again or downlink data arrives, stopping the timer, resetting the time length of the timer to be connection release time, and restarting the timer after sending or receiving the data. If the timer times out, it can be determined that there is no uplink data to be transmitted or no downlink data arrives within the connection release time, i.e., there is no transmission or reception of data. If the RRC connection release message sent by the base station 12 is received before the timer expires, the terminal device 11 releases the first RRC connection.
In addition, for example, it may also be detected whether there is uplink data to be transmitted or whether there is downlink data to arrive within the connection release time by setting a counter or the like. If the connection release time is set to a corresponding count value, a counter is started, and when uplink data needing to be sent or downlink data arrive, the counter is cleared and counted again. And when the counter counts the count value corresponding to the connection release time, determining that no uplink data to be sent or no downlink data arrives within the connection release time.
In step S104, when there is no transmission or reception of data within the connection release time, the established first RRC connection is released.
If the MAC layer of the terminal device 11 detects that there is no uplink data to be sent or no downlink data arrives within the connection release time, the MAC layer of the terminal device 11 may be notified to release the first RRC connection. The MAC layer of the terminal device 11 may notify the RRC layer through an inter-layer primitive, for example.
In some embodiments, the RRC layer of the terminal device 11 locally releases the RRC connection after receiving the notification. The terminal apparatus 11 enters the RRC idle state after releasing the RRC connection. Since the standby current of the terminal device in the RRC idle state is much smaller than the standby current in the RRC connected state, when there is no data transmission, the terminal device 11 is quickly returned to the RRC idle state, so that the standby power consumption of the terminal device can be greatly reduced, and the purpose of saving energy and power is achieved.
In some embodiments, after receiving the notification, the RRC of the terminal device 11 may further notify a Non-Access Stratum (NAS) layer through an inter-layer primitive, and Request the NAS layer to send an Extended Service Request Message (ESRmessage) to the network device 13. After receiving the ESR message, the network device 13 sends a corresponding response message to the terminal device 11, notifies the terminal device 11 to release the RRC connection, and notifies the terminal device 11 of access network related information (such as frequency points) of a 2G or 3G network that can be backed back. After receiving the response message, the terminal device 11 releases the first RRC connection.
In some embodiments, in order to prevent the signaling impact caused by the forced release of the first RRC connection performed by the plurality of terminal devices 11 in the same cell at the same time, after the timer expires, the first RRC connection may be released after waiting for a random time, so that the plurality of terminal devices 11 do not send a subsequent tracking Area Update request (TAU) message at the same time after releasing the first RRC connection. The random time may be implemented by a timer or a counter, for example, but the invention is not limited thereto.
After the RRC connection is established, context information corresponding to the RRC connection, such as related RRC configuration information and ID information of the RB, is stored in the terminal device 11 and the base station 12, respectively. In order to reduce the signaling overhead in the RRC connection establishment procedure when subsequently establishing the RRC connection, in some embodiments, the terminal device 11 may further retain the context information in the first RRC connection when locally releasing the first RRC connection, so as to be used for the RRC connection newly established next time.
In step S106, a TAU message is sent to the network device.
The TAU message is used to inform the network device that the first RRC connection has been released.
In some embodiments, after the RRC layer of the terminal device 11 locally releases the first RRC connection, since neither the base station 12 nor the network device 13 knows that the terminal device 11 has released the first RRC connection, the terminal device 11 needs to notify the base station 12 and the network device 13 that the first RRC connection has been released through a TAU procedure. Therefore, the network side is prevented from also using the first RRC connection to send data, which can result in that the user cannot receive the data in time.
In some embodiments, the first RRC connection is released after terminal device 11 receives the response message to the ESR message sent by network device 13. As the network device 13 receives the ESR message, it will communicate traffic, such as voice, back to the 2G or 3G network for that terminal device 11. Therefore, the terminal device 11 also needs to notify the network device 13 that it still resides in the current network and enters the idle state by sending a TAU message to the network device 13.
Fig. 3 is a signaling interaction flow diagram of a TAU procedure shown according to an example. In order to highlight the TAU procedure, only the interaction of TAU-related messages between terminal device 11 and network device 13 is shown, and the interaction of messages of the air interface between terminal device 11 and base station 12 and the S1 interface between base station 12 and network device 13 is omitted. The message related to the TAU procedure belongs to the NAS layer message, and is processed by the NAS layer of the terminal apparatus 11.
As shown in fig. 3, in the TAU interaction procedure, the terminal device 11 sends a tracking area update Request (TAU Request) message to the network device 13, and after receiving the message, the network device 13 performs corresponding processing and then returns a tracking area update accept (TAU Access) message to the terminal device 11. After receiving the TAU Access message, the terminal device 11 completes the TAU procedure.
In some cases, if in the TAU Access message, network device 13 allocates a GUTI (global Unique Temporary UE Identity) to terminal device 11, terminal device 11 further sends a tracking area update Complete (TAU Complete) message to network device 13. After sending the TAU Complete message, the terminal device 11 completes the TAU procedure.
In order to transmit the tracking area update Request message, the terminal device 11 needs to transmit an RRC Connection Request (RRC Connection Request) message to the base station 12 after the random access is successful, so as to Request establishment of an RRC Connection for transmitting the tracking area update Request message.
Fig. 4 is a signaling interaction flow diagram illustrating RRC connection establishment according to an example. For simplicity of illustration, the random access procedure is not shown in the figure. As shown in fig. 4, the terminal apparatus 11 transmits an RRC Connection Request (RRC Connection Request) message to the base station 12. After receiving the message, the base station 12 sends an RRC Connection Setup (RRC Connection Setup) message to the terminal device 11 to establish a new RRC Connection for the terminal device 11, which may be referred to as a second RRC Connection herein for distinguishing an RRC Connection that is released locally by the terminal device 11 before. After receiving the RRC Connection Setup message, the terminal device 11 sends an RRC Connection Setup Complete (RRC Connection Setup Complete) message to the base station 12, where the message carries a tracking area update request message sent by the terminal device 11 to the network device 13.
After receiving the RRC connection request message sent by the terminal device 11, the base station 12 detects that the first RRC connection between the base station and the terminal device 11 is not released, and will actively release the first RRC connection, so as to synchronize the RRC state of the terminal device 11 with the terminal device 11. Base station 12 also notifies network device 13 to release the connection on the S1 interface to synchronize the RRC state of terminal device 11 stored on network device 13.
In some embodiments, if the terminal device 11 locally releases the first RRC connection and retains the context information, the base station 12 may continue to use the previous context information with the terminal device 11 in the newly established second RRC connection, so as to avoid the re-interaction of the context information and save the signaling overhead on the air interface.
Further, in order to transmit the tracking area update request Message transmitted by the terminal apparatus 11, the base station 12 requests to establish an S1 connection with the network apparatus 13, such as an Initial UE Message (Initial UE Message). After the TAU procedure is completed, the network device 13 actively informs the base station 12 to RELEASE the S1 connection, for example, informs the base station 12 through a UE CONTEXT RELEASE COMMAND (UE CONTEXT RELEASE COMMAND) message. After receiving the Connection Release message, the base station 12 notifies the terminal device 11 to Release the second RRC Connection through an RRC Connection Release message, so as to complete the state synchronization among the terminal device 11, the base station 12, and the network device 13.
The terminal device 11 releases the second RRC connection after receiving the RRC connection release message.
In step S108, the number of times of transmission of the TAU message is determined.
In order to prevent the terminal device 11 from forcibly releasing the RRC connection and causing a network impact, the length of the current connection release time may be dynamically adjusted by setting a threshold for sending the TAU message. Therefore, in this step, only the number of times of transmission of the TAU message for notifying the network device 13 that the first RRC connection has been released is counted. For TAU messages sent for other reasons, no statistics are needed.
In step S110, the connection release time is adjusted according to the sending times and a preset time threshold.
The preset time threshold may be set according to actual needs, for example, may be fixed as a fixed parameter in the terminal device 11, or may also be configured through an RRC connection establishment procedure or an RRC reconfiguration procedure.
In some embodiments, the time threshold comprises: a first time threshold and a second time threshold, the first time threshold being greater than the second time threshold. According to the sending times and the preset time threshold, adjusting the connection release time may include: when the sending times are larger than a first time threshold value, prolonging the connection release time; and when the sending times are less than the second time threshold, shortening the connection release time. It should be noted that the adjusted connection release time cannot be too short (for example, it cannot be less than 10S), otherwise, the terminal device 11 frequently releases the first RRC connection, thereby affecting the network.
According to the RRC connection release method provided by the embodiment of the invention, a mechanism for locally releasing the RRC connection is designed in the terminal equipment, so that the problem of high standby power consumption of the terminal equipment caused by the fact that the base station side does not release the RRC connection for a long time in the existing LTE network is solved. By adopting the method, the standby power consumption can be reduced by 85-96%, and the endurance time of the terminal equipment can be greatly prolonged.
It should be clearly understood that the present disclosure describes how to make and use particular examples, but the principles of the present disclosure are not limited to any details of these examples. Rather, these principles can be applied to many other embodiments based on the teachings of the present disclosure.
Those skilled in the art will appreciate that all or part of the steps implementing the above embodiments are implemented as computer programs executed by a CPU. The computer program, when executed by the CPU, performs the functions defined by the method provided by the present invention. The program may be stored in a computer readable storage medium, which may be a read-only memory, a magnetic or optical disk, or the like.
Furthermore, it should be noted that the above-mentioned figures are only schematic illustrations of the processes involved in the method according to exemplary embodiments of the invention, and are not intended to be limiting. It will be readily understood that the processes shown in the above figures are not intended to indicate or limit the chronological order of the processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, e.g., in multiple modules.
The following are embodiments of the apparatus of the present invention that may be used to perform embodiments of the method of the present invention. For details which are not disclosed in the embodiments of the apparatus of the present invention, reference is made to the embodiments of the method of the present invention.
Fig. 5 is a block diagram illustrating an RRC connection release apparatus according to an example embodiment.
Referring to fig. 5, the RRC connection release apparatus 20 includes: a data detection module 202, a connection release module 204, a message sending module 206, a number determination module 208, and a time adjustment module 210.
The data detection module 202 is configured to detect whether data is transmitted or received within a preset connection release time.
The connection releasing module 204 is configured to release the established first RRC connection when the data detecting module 202 does not detect transmission or reception of data within the connection release time.
The message sending module 206 is configured to send a tracking area update request message to the network device. The tracking area update message is used to inform the network device that the first RRC connection has been released.
The number determination module 208 is configured to determine the number of times the tracking area update request message is sent.
The time adjusting module 210 is configured to adjust the connection release time according to the sending times and a preset time threshold.
According to the RRC connection release device provided by the embodiment of the invention, the problem of high standby power consumption of the terminal equipment caused by long-time no release of the RRC connection at the base station side in the existing LTE network is solved by locally releasing the RRC connection in the terminal equipment. By adopting the method, the standby power consumption can be reduced by 85-96%, and the endurance time of the terminal equipment can be greatly prolonged.
Fig. 6 is a block diagram illustrating another RRC connection release apparatus according to an example embodiment. The difference from the RRC connection release apparatus 20 shown in fig. 5 is that the data detection module 302 in the RRC connection release apparatus 30 shown in fig. 6 includes: a timer starting unit 3022, a timer restarting unit 3024, and a detection determining unit 3026.
The timer starting unit 3022 is configured to start a timer after transmitting or receiving data, and a duration of the timer is set as the connection release time.
The timer restarting unit 3024 is configured to stop the timer when data is sent or received again before the timer times out, set a duration of the timer as the connection release time, and restart the timer after data is sent or received.
The detection determining unit 3026 is configured to determine that there is no transmission or reception of data within the connection release time when the timer expires.
Furthermore, in some embodiments, the connection releasing module 204 is configured to wait for a random time before releasing the first RRC connection.
In some embodiments, the message sending module 206 is further configured to send an extended service request message to the network device before releasing the established first RRC connection.
In some embodiments, the timer restarting unit 3024 is further configured to release the first RRC connection when receiving a first RRC connection release message sent by the base station before the timer expires.
In some embodiments, the time threshold comprises: a first time threshold and a second time threshold, the first time threshold being greater than the second time threshold; the time adjustment module 210 is configured to prolong the connection release time when the sending times is greater than the first time threshold; and when the sending times are less than the second time threshold, shortening the connection release time.
In some embodiments, the RRC connection releasing apparatus 30 may further include: a connection establishing module 304, configured to initiate an RRC connection request message to the base station to request establishment of a second RRC connection before sending the tracking area update request message to the network device; wherein the tracking area update request message is sent based on the second RRC connection.
In some embodiments, the RRC connection releasing apparatus 30 may further include: a message receiving module 306 and a second connection releasing module 308. The message receiving module 306 is configured to receive an RRC connection release message sent by the base station. The second connection releasing module 308 is configured to release the second RRC connection when the message receiving module 306 receives the second RRC connection release message.
It is noted that the block diagrams shown in the above figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
Fig. 7 is a schematic diagram illustrating a structure of a terminal device according to an exemplary embodiment.
Referring to fig. 7, the terminal apparatus 600 may include: a processor 610, a transceiver 620, and a memory 630. Wherein the processor 610, the transceiver 620 and the memory 630 are in communication with each other via internal link paths. The memory 630 is used for storing instructions, and the processor 610 is used for executing the instructions stored in the memory 630 to control the transceiver 620 to receive signals or transmit signals.
The processor 610 is configured to detect whether there is data to be sent or received within a preset connection release time; releasing the established first RRC connection when there is no transmission or reception of data within the connection release time.
The transceiver 620 is configured to send a tracking area update request message to a network device, where the tracking area update message is used to notify a base station and the network device that the first RRC connection has been released.
The processor 610 is further configured to determine the number of times of sending the tracking area update request message, and adjust the connection release time according to the number of times of sending and a preset time threshold.
Therefore, in the embodiment of the present invention, by locally releasing the RRC connection in the terminal device, the problem of high standby power consumption of the terminal device caused by the base station side not releasing the RRC connection for a long time in the existing LTE network is solved. By adopting the method, the standby power consumption can be reduced by 85-96%, and the endurance time of the terminal equipment can be greatly prolonged.
In some embodiments, the processor 610 is configured to wait a random time before releasing the first RRC connection.
In some embodiments, the transceiver 620 is further configured to send an extended service request message to the network device before releasing the established first RRC connection.
In some embodiments, the processor 610 is configured to start a timer after sending or receiving data, and a duration of the timer is set to the connection release time; when the timer is used for sending or receiving data again before the timer is overtime, stopping the timer, setting the duration of the timer as the connection release time, and restarting the timer after the data is sent or received; and when the timer times out, determining that no data is transmitted or received within the connection release time.
In some embodiments, the processor 610 is further configured to release the first RRC connection when the transceiver 620 receives a first RRC connection release message sent by the base station before the timer expires.
In some embodiments, the time threshold comprises: a first time threshold and a second time threshold, the first time threshold being greater than the second time threshold; processor 610 is configured to extend the connection release time when the number of transmissions is greater than the first time threshold; and when the sending times are less than the second time threshold, shortening the connection release time.
In some embodiments, the transceiver 620 is further configured to send an RRC connection request message to the base station to request establishment of a second RRC connection before sending the tracking area update request message to the network device; wherein the tracking area update request message is sent based on the second RRC connection.
In some embodiments, the processor 610 is further configured to release the second RRC connection after the transceiver 620 receives the second RRC connection release message.
It should be understood that in embodiments of the present invention, the processor 610 may be a Central Processing Unit (CPU), but may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or any conventional processor or the like.
The memory 630 may include Read Only Memory (ROM) and Random Access Memory (RAM), and provides instructions and data to the processor 610. A portion of the memory 630 may also include non-volatile random access memory. In addition, the memory 630 may also store information of device types.
In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in the processor 610 or instructions in the form of software, or may be performed by a combination of hardware and software modules in the processor 610. The software modules may be located in ram, flash, rom, prom, or eprom, registers, among other storage media as is well known in the art. The storage medium is located in the memory 630, and the processor 610 reads the information in the memory 630 and performs the steps of the above method in combination with the hardware thereof. To avoid repetition, it is not described in detail herein.
The terminal device 600 according to the embodiment of the present invention may correspond to the terminal device in the method 10 for executing the method 10, and each unit or module in the terminal device 600 is respectively used for executing each action or processing procedure executed by the terminal device in the method 10. To avoid repetition, it is not described in detail herein.
Fig. 8 is a schematic diagram illustrating a system chip according to an example embodiment.
Referring to fig. 8, the system chip 900 includes: an input interface 910, an output interface 920, at least one processor 930, and a memory 940. The input interface 910, the output interface 920, the processor 930, and the memory 940 are connected to each other via an internal connection path. Processor 930 is configured to execute executable instructions in memory 940.
When executed, processor 930 may implement the method performed by the terminal device in method 10 described above. To avoid repetition, it is not described in detail herein.
Exemplary embodiments of the present invention are specifically illustrated and described above. It is to be understood that the invention is not limited to the precise construction, arrangements, or instrumentalities described herein; on the contrary, the invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (12)
1. An RRC connection release method, comprising:
detecting whether data is sent or received within a preset connection release time;
when no data is sent or received within the connection release time, after waiting for a random time, locally releasing the established first RRC connection and entering an RRC idle state;
transmitting an RRC connection request message to the base station to establish a second RRC connection;
sending a tracking area update request message to a network device based on the second RRC connection, the tracking area update request message being used for notifying the network device that the first RRC connection has been released;
when receiving a second RRC connection release message sent by the base station, releasing the second RRC connection;
determining the number of times of sending the tracking area updating request message; and
and adjusting the connection release time according to the sending times and a preset time threshold.
2. The method of claim 1, wherein prior to releasing the established first RRC connection, the method further comprises: and sending an extended service request message to the network equipment.
3. The method of claim 1, wherein detecting whether data is transmitted or received within a predetermined connection release time comprises:
after data is sent or received, starting a timer, wherein the duration of the timer is set as the connection release time;
before the timer is overtime, when data is sent or received again, the timer is stopped, the duration of the timer is set as the connection release time, and the timer is restarted after the data is sent or received; and
when the timer times out, it is determined that there is no transmission or reception of data within the connection release time.
4. The method of claim 3, further comprising:
and before the timer is overtime, when a first RRC connection release message sent by the base station is received, releasing the first RRC connection.
5. The method of claim 1, wherein the time threshold comprises: a first time threshold and a second time threshold, the first time threshold being greater than the second time threshold; adjusting the connection release time according to the sending times and a preset time threshold comprises: when the sending times are larger than the first time threshold, prolonging the connection release time; and when the sending times are less than the second time threshold, shortening the connection release time.
6. An apparatus for RRC connection release, comprising:
the data detection module is used for detecting whether data is sent or received within a preset connection release time;
a connection release module, configured to, when the data detection module does not detect sending or receiving of data within the connection release time, wait for a random time, locally release the established first RRC connection, and enter an RRC idle state;
a connection establishing module, configured to initiate an RRC connection request message to a base station to request establishment of a second RRC connection;
a message sending module, configured to send a tracking area update request message to a network device based on the second RRC connection, where the tracking area update request message is used to notify the network device that the first RRC connection is released;
a second connection releasing module, configured to release a second RRC connection when the message receiving module receives a second RRC connection release message sent by the base station;
the number determining module is used for determining the sending number of the tracking area updating request message; and
and the time adjusting module is used for adjusting the connection release time according to the sending times and a preset time threshold.
7. The apparatus of claim 6, wherein the data detection module comprises:
a timer starting unit, configured to start a timer after sending or receiving data, where a duration of the timer is set as the connection release time;
a timer restarting unit, configured to stop the timer when data is sent or received again before the timer times out, set a duration of the timer as the connection release time, and restart the timer after data is sent or received; and
a detection determining unit, configured to determine that there is no transmission or reception of data within the connection release time when the timer expires.
8. A terminal device, comprising: a processor and a transceiver;
the processor is used for detecting whether data is sent or received within a preset connection release time; when no data is sent or received within the connection release time, after waiting for a random time, locally releasing the established first RRC connection and entering an RRC idle state;
the transceiver is used for sending an RRC connection request message to the base station so as to establish a second RRC connection; based on the second RRC connection, sending a tracking area update request message to a network device, wherein the tracking area update message is used for informing a base station and the network device that the first RRC connection is released;
the processor is further configured to release a second RRC connection when the transceiver receives a second RRC connection release message sent by the base station; and determining the sending times of the tracking area updating request message, and adjusting the connection release time according to the sending times and a preset time threshold.
9. The terminal device of claim 8, wherein the transceiver is further configured to send an extended service request message to the network device before releasing the established first RRC connection.
10. The terminal device according to claim 8, wherein the processor is configured to start a timer after sending or receiving data, and a duration of the timer is set as the connection release time; when the timer is used for sending or receiving data again before the timer is overtime, stopping the timer, setting the duration of the timer as the connection release time, and restarting the timer after the data is sent or received; and when the timer times out, determining that no data is transmitted or received within the connection release time.
11. The terminal device of claim 10, wherein the processor is further configured to release the first RRC connection when the transceiver receives a first RRC connection release message sent by the base station before the timer expires.
12. The terminal device of claim 8, wherein the time threshold comprises: a first time threshold and a second time threshold, the first time threshold being greater than the second time threshold; the processor is configured to extend the connection release time when the number of transmissions is greater than the first time threshold; and when the sending times are less than the second time threshold, shortening the connection release time.
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| CN111885748B (en) * | 2020-07-23 | 2022-11-01 | 广东小天才科技有限公司 | Method for releasing RRC connection, terminal equipment and network equipment |
| CN111935848B (en) * | 2020-07-23 | 2023-06-27 | 广东小天才科技有限公司 | Periodic service updating method and device and terminal equipment |
| CN114173431B (en) * | 2020-09-11 | 2023-12-29 | 华为技术有限公司 | RRC connection release method and device |
| CN112367716B (en) * | 2020-10-30 | 2023-03-31 | Oppo广东移动通信有限公司 | Wireless communication method, terminal equipment and network equipment |
| CN112492704B (en) * | 2020-12-11 | 2022-07-19 | Oppo（重庆）智能科技有限公司 | Session management method, device, terminal equipment and computer readable storage medium |
| CN113508638B (en) * | 2021-06-08 | 2024-02-20 | 北京小米移动软件有限公司 | Communication method, device and equipment |
| CN113596969A (en) * | 2021-07-23 | 2021-11-02 | 西安广和通无线软件有限公司 | Power consumption optimization method, electronic device, and storage medium |
| CN113795046B (en) * | 2021-09-14 | 2023-09-26 | 北京小米移动软件有限公司 | Communication method, communication device, communication apparatus, and storage medium |
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