WO2013079036A1

WO2013079036A1 - Resource-release control method and access device

Info

Publication number: WO2013079036A1
Application number: PCT/CN2012/085747
Authority: WO
Inventors: 高慧; 解应春
Original assignee: 华为技术有限公司
Priority date: 2011-12-02
Filing date: 2012-12-03
Publication date: 2013-06-06
Also published as: CN103139851A

Abstract

Disclosed are a resource-release control method and an access device, capable of conserving air interface resources, and of improving the timeliness of resource-release. The method of embodiments of the present invention comprises: the access device acquiring a connection state of a user equipment (UE) via real-time detection; and if the connection state expresses that the UE has left the connection, then the access device executing for the UE a connection release operation. Also provided in the embodiments of the present invention is the access device. The embodiments of the present invention allow for effective conservation of the air interface resources, and for increased timeliness of resource-release.

Description

Resource release control method and access device The present application claims the priority of a Chinese application filed on December 2, 2011, with the application number 201110396078.6 and the invention name "a resource release control method and access device". The entire contents of this application are incorporated herein by reference. The present invention relates to the field of communications, and in particular, to a resource release control method and an access device. In a communication system, an evolved base station (eNB, evolved NodeB) allocates system resources (such as a central processing unit, a memory, a power, a spectrum, and the like) to a user equipment (UE, User Equipment) that is connected thereto, so that these The UE performs corresponding communication services.

In the prior art, when the data radio bearer (DRB, Data Radio Bearer) or the signal radio bearer (SRB) reaches the maximum number of resets, the eNB releases the system resources allocated for the UE to improve system resources. Utilization.

In the service maintenance process, if the UE is in a scenario of weak signal coverage, steep signal drop, card pull, power off, and radio off, if the eNB side radio link control (RLC, Radio Link Control) caches data or signaling Sending to the UE will cause the DRB or the SRB to release the abnormal resource with the maximum number of retransmissions, and the eNB will release the system resources allocated for the UE.

In the prior art solution, the eNB retransmits data to the UE continuously, and releases the system resources allocated to the UE after the number of retransmissions exceeds the threshold. In the prior art, the eNB hopes that the UE can successfully receive data by continuously retransmitting data to the UE, so a large amount of air interface resources are wasted, and the timeliness of resource release is affected.

SUMMARY OF THE INVENTION The embodiments of the present invention provide a resource release control method and an access device, which can save air interface resources and improve timeliness of resource release.

An aspect of the present invention provides a resource release control method, including: an access device acquires a connection state of a user equipment UE by real-time detection; and if the connection status indicates that the UE is disconnected, the access device pairs the The UE performs a connection release operation.

Another aspect of the present invention provides an access device, including: an acquiring unit, configured to pass real-time Detecting a connection state of the user equipment UE, and a releasing unit, configured to perform a connection release operation on the UE when the connection status acquired by the acquiring unit indicates that the UE has been disconnected.

As can be seen from the above technical solutions, the embodiments of the present invention have the following advantages:

In the embodiment of the present invention, the access device obtains the connection status of the UE through real-time detection, so as to know whether the UE has been disconnected from the connection, and if it is determined that the UE has been disconnected, the access device may directly perform a connection release operation on the UE, because The access device detects the connection status of the UE in real time, and does not delay the detection of the connection status of the UE by the maximum attempted mode of retransmitting data, so the data retransmitted by the access device to the UE can be reduced, thereby saving air interface resources, and Improve the timeliness of resource release.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the prior art description will be briefly described below. 1 is a schematic diagram of an embodiment of a resource release control method according to the present invention;

2 is a schematic diagram of another embodiment of a resource release control method according to the present invention;

3 is a schematic diagram of another embodiment of a resource release control method according to the present invention;

4 is a schematic diagram of another embodiment of a resource release control method according to the present invention;

FIG. 5 is a schematic diagram of another embodiment of a resource release control method according to the present invention; FIG.

6 is a schematic diagram of another embodiment of a resource release control method according to the present invention;

7 is a schematic diagram of an embodiment of an access device according to the present invention;

8 is a schematic diagram of another embodiment of an access device according to the present invention;

9 is a schematic diagram of another embodiment of an access device according to the present invention;

FIG. 10 is a schematic diagram of another embodiment of an access device according to the present invention; FIG.

FIG. 11 is a schematic diagram of another embodiment of an access device according to the present invention.

DETAILED DESCRIPTION OF THE INVENTION In the following description, for purposes of illustration and description However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the invention. The various techniques described herein can be used in a variety of wireless communication systems, such as current 2G, 3G communication systems and next generation communication systems, such as Global System for Mobile Communications (GSM), Code Division Multiple Access (CDMA), Code Division Multiple Access system, Time Division Multiple Access (TDMA) system, Wideband Code Division Multiple Access (WCDMA), Frequency Division Multiple Access (FDMA), Frequency Division Multiple Addressing (FDMA) system, Orthogonal Frequency-Division Multiple Access (OFDMA) system, single carrier FDMA (SC-FDMA) system, General Packet Radio Service (GPRS) system, Long Term Evolution (LTE, Long Term Evolut) Ion ) system, and other such communication systems.

Various aspects are described herein in connection with user equipment and/or base stations and/or base station controllers. The user equipment, which may be a wireless terminal or a wired terminal, may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem. The wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and with a mobile terminal The computers, for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network. For example, Personal Communication Service (PCS), Cordless Phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), etc. . A wireless terminal may also be called a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment.

A base station (e.g., an access point) can refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface. The base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network. The base station can also coordinate attribute management of the air interface. For example, the base station can be a base station in GSM or CDMA (BTS, Base Transceiver) The eNB may be a base station (NodeB) in WCDMA, or may be an evolved base station (NodeB or eNB or e-NodeB, evolutiona Node B) in LTE, which is not limited in the present invention.

The base station controller may be a base station controller (BSC) in GSM or CDMA, or may be a radio network controller (RNC) in WCDMA, which is not limited by the present invention. .

In addition, the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this context is merely an association that describes the associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists separately, and both A and B exist, exist alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

The embodiment of the invention provides a resource release control method and an access device, which can save air interface resources and improve the timeliness of resource release.

Referring to FIG. 1, an embodiment of a resource release control method of the present invention includes:

101. The access device acquires a connection status of the UE by using real-time detection.

In this embodiment, the access device can obtain the connection status of the UE in its own service range by real-time detection.

The specific real-time detection manner may be: monitoring the information of the physical uplink channel, or receiving the message sent by the UE or other network element, and the detailed process will be described in the following embodiments.

102. If the connection status indicates that the UE is disconnected, the access device performs a connection release operation on the UE.

After the access device obtains the connection status of the UE by real-time detection, if the connection status is found to indicate that the UE has been disconnected, the UE does not receive the downlink information sent by the access device, and the access device may The UE performs a connection release operation to release related system resources.

In this embodiment, the access device obtains the connection status of the UE through real-time detection, so as to know whether the UE has been disconnected from the connection. If the UE is determined to be disconnected from the connection, the access device may directly perform a connection release operation on the UE. The inbound device can detect the connection status of the UE in real time, instead of delaying the detection of the connection status of the UE by retrying the data, so the data retransmitted by the access device to the UE can be reduced, thereby saving air interface resources and improving resources. Timeliness of release.

It should be noted that the access device in this embodiment may be an eNB, or may be a wireless access point (AP, Acces s Point), or may be another type of device having an access function. The eNB is taken as an example for description. For ease of understanding, the resource release control method in the embodiment of the present invention is described in detail in several specific embodiments according to different manners of obtaining the connection state of the UE:

1. Obtain the connection status of the UE by monitoring the information of the physical uplink channel:

In the LTE system, the physical downlink shared channel (PDSCH) in the downlink of the eNB to the UE is mainly used for transmitting service data, and the PDCCH is used for transmitting control signaling.

The eNB transmits downlink information (for example, one data packet) to the UE on the PDSCH, and then monitors the feedback information of the UE on the physical uplink channel. If an acknowledgment (ACK) or a negative acknowledgment (NACK) is detected, the eNB indicates that the UE The data packet has been received or not received. If the eNB does not receive the UE feedback information for the data packet within the preset time range (for example, within 4 milliseconds), that is, ACK or NACK, the eNB records a discontinuous transmission ( DTX, Discontinuous Transmission) Event.

The physical uplink channel in the embodiment may be a physical uplink control channel (PUCCH, Physical Uplink Control Channel), a physical uplink shared channel (PUSCH), or other types of physical uplink channels. The details are not limited herein.

It should be noted that the feedback information of the UE may be information on the PUCCH, or information in the path-to-path signaling of the PUSCH, or information on other physical uplink channels, that is, the eNB may perform monitoring on the PUCCH. It can also be monitored in the associated channel signaling of the PUSCH, and can also be monitored on other physical uplink channels.

The eNB may acquire the connection state of the UE according to the number of consecutive DTX events or the method of starting the timer after detecting the DTX event, which are respectively described below:

(1) The eNB acquires the connection status of the UE according to the number of DTX events:

Referring to FIG. 2, another embodiment of the resource release control method of the present invention includes:

201. After the downlink information is sent to the UE, the access device monitors the feedback information of the UE.

The access device in this embodiment may be an eNB, and the downlink information sent may be a data packet. After transmitting the data packet P1 to the UE, the eNB monitors the feedback information of the UE to confirm the UE's reception of the data packet P1.

202. If the access device does not receive the feedback information of the UE for the downlink information within a preset time range, record a DTX event. If the eNB does not detect feedback information (ie, ACK or NACK) of the UE for the data packet P1 within a preset time range (eg, 4 milliseconds) after transmitting the data packet PI to the UE, a DTX event is recorded once.

203. Determine whether the number of consecutive DTX events recorded exceeds a preset threshold, and if yes, execute step 204, if no, perform step 201;

After the DTX event is recorded, the eNB can determine in real time whether the number of consecutive DTX events recorded exceeds a preset threshold. If yes, step 204 is performed. If not, the process returns to step 201.

The threshold in this embodiment can be set according to the actual situation. If the timeliness of resource recovery is high, the threshold can be set lower. If the user service stability requirement is high, the threshold can be set. Higher.

204. The access device determines that the UE is disconnected.

If the eNB determines that the recorded consecutive DTX event exceeds the preset threshold, it indicates that the UE does not feed back the data packet sent by the eNB for a long time, and then it may be determined that the UE has been disconnected, and the disconnection may be caused by the UE. The cell switching, or dropped calls, or the situation that the normal connection cannot be restored within a short period of time, such as pulling the card, powering off, and turning off the radio.

Generally, in these scenarios, the UE cannot resume normal connections within the preset number of retransmission times specified by the current protocol.

205. The access device releases the system resource allocated to the UE, and stops sending downlink information to the UE. In this embodiment, after the eNB determines that the UE has detached from the connection, the eNB may immediately release the system resources allocated for the UE, and stop sending any downlink information to the UE, and stop monitoring accordingly.

In this embodiment, the eNB may acquire the connection status of the UE by monitoring the information of the physical uplink channel, so as to know whether the UE has been disconnected from the connection. If it is determined that the UE has been disconnected, the eNB may directly perform a connection release operation on the UE, because the eNB may The real-time detection of the connection state of the UE is performed, and the connection state of the UE is not detected by the method of retransmitting the data. Therefore, the data retransmitted by the access device to the UE can be reduced, thereby saving air interface resources and improving the timely release of resources. Sex.

(2) The eNB obtains the connection status of the UE by starting a timer after detecting the DTX event:

The above embodiment describes that the eNB acquires the UE by the number of consecutive DTX events recorded. In the actual application, the eNB may also obtain the connection state of the UE by using a timer after the DTX event is detected. For details, refer to FIG. 3, another embodiment of the resource release control method of the present invention includes:

301. After the downlink information is sent to the UE, the access device monitors the feedback information of the UE.

302. If the access device does not receive the feedback information of the UE for the downlink information within a preset time range, record the DTX event.

If the eNB does not monitor the UE's feedback information (i.e., ACK or NACK) for the data packet P1 within a preset time range (e.g., within 4 milliseconds) after transmitting the data packet P1 to the UE, the DTX event is recorded.

303. Start a timer.

After the eNB records the DTX event, the eNB may start a timer and continue to wait for uplink information (including uplink data packets or uplink signaling) sent by the UE within the timer range.

In this embodiment, the range of the timer may be set according to actual conditions. If the timeliness of resource recovery is high, the range of the timer may be set to be shorter, if the stability of the user service is high. , you can set the range of the timer to be longer.

304. Determine whether the UE receives the uplink information before the timer expires. If yes, go to step 305. If no, go to step 306.

After the eNB starts the timer, it can wait for the uplink information sent by the UE before the timer expires. If the uplink information sent by the UE is received before the timer expires, the UE has not been disconnected. If the timer is not received before the timer expires, The uplink information sent by the UE indicates that the UE has been disconnected.

305. Perform other data transmission processes, stop the timer, and clear the DTX record.

If the eNB receives the uplink information sent by the UE before the timer expires, it indicates that the UE has not been disconnected, and the eNB may continue to perform data transmission with the UE. The specific process is not limited herein.

It should be noted that, when the eNB receives the uplink information sent by the UE before the timer expires, the eNB also needs to stop the timer and clear the DTX record for the next processing procedure.

306. The access device determines that the UE is disconnected from the connection. If the eNB does not receive the uplink information sent by the UE before the timer expires, the UE is disconnected from the connection. The reason for the disconnection may be that the UE has a cell handover, or the call is dropped, or the card is disconnected, the power is turned off, the radio is turned off, and the like. The scene of normal connection cannot be restored in a short time.

307. The access device releases the system resource allocated to the UE, and stops sending downlink information to the UE. In this embodiment, after the eNB determines that the UE has detached from the connection, the eNB may immediately release the system resources allocated for the UE, and stop sending any downlink information to the UE, and stop monitoring accordingly.

2. The UE obtains the connection status of the UE by receiving the message sent by the UE or other network element: The eNB can receive the message from the UE or other network element during the communication process, and the eNB can determine the connection status of the UE by determining the type of the message.

For ease of understanding, the resource release control method in the embodiment of the present invention is described in detail in several specific embodiments according to different sources:

(1) The eNB acquires the connection status of the UE according to the message sent by the UE:

Referring to FIG. 4, another embodiment of the resource release control method of the present invention includes:

401, determining whether the message sent by the UE indicating that the UE has dropped the call is received, if yes, executing step 403; if not, executing step 402;

In this embodiment, the eNB may determine whether a message sent by the UE indicating that the UE has dropped the call is received during the communication process.

The message may be a RRC Connec t ion Rees tab l i shment Reque s t message, or a message 3 (MSG3) message in an actual application.

It should be noted that the UE sends a radio connection re-establishment request message to request re-establishment after the dropped call under the same eNB. For details, refer to the 3rd Generation Partnership Project (3GPP, 3rd Genera-Tion Partner shi p Projec) t) the description of the provisions of Section 5.3.7 of Article 36.331, The body is not limited here.

The sending of the MSG3 message by the UE may indicate that the UE re-enters the network after the abnormal call back, such as the call drop, the radio shutdown, and the like. The MSG3 message is defined in the Random Acces s Procedure in the 3GPP protocol 36.331, MSG3 The message can be regarded as an uplink message sent by the UE on the PUSCH.

It can be understood that, in this embodiment, only two types of messages are used as an example. In an actual application, the message indicating that the UE has dropped calls may be other types besides the above two types of messages. The message is not limited here.

402, wait, and repeat step 401;

If the eNB does not receive the message sent by the UE indicating that the UE has dropped the call, the eNB continues to wait, and performs other communication processing procedures, and repeats step 401.

403. The access device determines that the UE is disconnected.

If the eNB receives the message sent by the UE indicating that the UE has dropped the call, it indicates that the UE has detached from the connection, and the disconnection may cause the UE to drop the call.

404. The access device releases system resources allocated to the UE, and stops sending downlink information to the UE. In this embodiment, after the eNB determines that the UE has detached from the connection, the eNB may immediately release the system resources allocated for the UE, and stop sending any downlink information to the UE.

(2) The eNB acquires the connection status of the UE according to the message sent by other network elements:

In the above embodiment, the eNB obtains the connection status of the UE according to the message sent by the UE. In an actual application, the eNB may also obtain the connection status of the UE according to the message sent by the other network element. For details, refer to FIG. 5 , Another embodiment of the resource release control method includes:

501, the source cell access device determines whether a message sent by another network element indicating that the UE has a cell handover is received, and if yes, step 503 is performed; if not, step 502 is performed;

In this embodiment, the source cell eNB may determine whether a message sent by another network element indicating that the UE has a cell handover is received during the communication process.

In the actual application, the message may be a radio link failure (RLF, Rad io L ink Fa i lure ) indication message sent by the target cell eNB, or a handover report (Handover Repor) message sent by the target cell eNB, or a target cell eNB. The transmitted UE context release (UE Context Re l ea se ) message, or the End Marker message sent by the data forwarding gateway, or the handover complete message sent by the different system access device, or the custom sent by the target cell eNB Release the message.

It should be noted that the RLF indication message sent by the target cell eNB indicates that the radio link is established. For the specific process, refer to the description of Section 8.3.9 of 3GPP Protocol 36. 423, which is not limited herein.

The handover report message sent by the target cell eNB is used to report the information about the cell handover to the source cell eNB. For details, refer to the description in section 8.3.1 of the 3GPP protocol 36. 423, which is not limited herein.

The UE context release message sent by the target cell eNB causes the source cell eNB to release the context resource allocated for the UE.

The End Marker (End Ma rker ) message sent by the data forwarding gateway is used to indicate that this is the last packet sent to the source cell eNB, and subsequent packets will be sent to the target cell eNB.

The handover complete message sent by the different system access device is used to indicate that the UE has switched to a different system cell.

The target cell eNB may also enable the source cell eNB to perform a connection release operation on the UE by customizing some new messages, such as a custom release message.

502, wait, and repeat step 501;

If the source cell eNB does not receive a message sent by another network element indicating that the UE has a cell handover, the source cell eNB continues to wait, and performs other communication processing procedures, and repeats step 501.

503. The access device determines that the UE is disconnected.

If the source cell eNB receives a message sent by another network element indicating that the UE has a cell handover, the UE may be disconnected from the connection, and the reason for leaving the connection may be that the UE performs cell handover.

504. The access device releases system resources allocated to the UE, and stops sending downlink information to the UE. In this embodiment, after the source cell eNB determines that the UE has detached from the connection, the source cell eNB may immediately release the system resources allocated for the UE, and stop sending any downlink information to the UE.

It is mentioned in the foregoing embodiment that the target cell eNB can perform a connection release operation on the UE by customizing some new messages, such as a custom release message. For ease of understanding, the following describes a specific example. 6. Another embodiment of the resource release control method of the present invention includes:

601. The UE reports a measurement report (Mea s Rp t ) to the source cell access device.

In the process of the UE communicating with the source cell eNB, the UE may send a measurement to the source cell eNB, where the measurement report may carry measurement information after the UE performs measurement on the signal strength, the neighboring cell eNB, and the like. The specific content is not limited here.

602. The source cell access device sends a handover command (H0-CMD) to the UE.

After receiving the measurement report sent by the UE, the eNB determines whether the cell handover condition is met according to the content of the measurement report. If yes, the source cell eNB may send a handover command to the UE to indicate that the UE performs cell handover.

It should be noted that, in this embodiment, the process of determining whether the cell handover condition is met by the source cell eNB according to the content of the measurement report is common knowledge of those skilled in the art, and is not limited herein.

603. The UE successfully switches to the target cell, or the handover fails, and is re-established to the neighboring cell.

604. The UE sends a random access preamble (Random Acce s s Preamb e e) to the target cell access device.

605. The target cell access device sends a custom message to the source cell access device.

In this embodiment, after receiving the random access preamble sent by the UE, the target cell eNB may send a customized message to the source cell eNB, and the customized message may be a newly added X2 interface customized release message, or may be added. The S1 port customizes the release message.

The custom message causes the source cell eNB to perform a connection release operation on the UE.

606. The source cell access device performs a connection release operation on the UE.

After the source cell eNB receives the newly added X2 custom release message sent by the target eNB, or after the newly added S1 custom release message, it indicates that the UE has already performed cell handover, and the source cell eNB can directly perform the connection to the UE. Release operation.

The specific connection release operation may include: releasing system resources allocated for the UE, and stopping sending any downlink information to the UE.

In this embodiment, the access device obtains the connection status of the UE through real-time detection, so as to know whether the UE has been disconnected from the connection. If the UE is determined to be disconnected from the connection, the access device may directly perform a connection release operation on the UE. The incoming device detects the connection status of the UE in real time, and does not delay detecting the connection status of the UE by attempting to retransmit the data. Therefore, for the UE to switch due to the cell, or to drop the call, pull the card, power off, turn off the radio, etc. If the reason is disconnected from the connection, the data that the access device retransmits to the UE can be reduced, thereby saving air interface resources and improving the timeliness of resource release.

The following describes the access device in the present invention. Referring to FIG. 7, an embodiment of the access device of the present invention includes: The obtaining unit 701 is configured to acquire a connection state of the user equipment UE by using real-time detection. The releasing unit 702 is configured to perform a connection release operation on the UE when the connection status acquired by the obtaining unit 701 indicates that the UE has been disconnected.

The access device in this embodiment may further include: a determining unit 703, configured to determine whether the reason for the detachment of the UE is a cell handover of the UE, or a call drop, a card pull, or a power failure, or The radio is turned off, and if so, the trigger release unit 702 performs the corresponding operation.

According to the manner in which the obtaining unit 701 obtains the connection status of the UE, the access device in this embodiment may have the following implementation forms, which are respectively described below:

Referring to FIG. 8, another embodiment of the access device of the present invention includes:

The obtaining unit 801 is configured to obtain a connection state of the user equipment UE by using real-time detection. The releasing unit 802 is configured to perform a connection release operation on the UE when the connection status acquired by the obtaining unit 801 indicates that the UE has been disconnected from the connection.

The access device in this embodiment may further include: a determining unit 803, configured to determine whether the reason for the disconnection of the UE is a cell handover of the UE, or a call drop, a card pull, or a power failure, or The radio is turned off, and if so, the trigger release unit 802 performs a corresponding operation.

The obtaining unit 801 includes:

The first monitoring module 801 1 is configured to monitor the feedback information of the UE every time the downlink information is sent to the UE;

The first recording module 8012 is configured to record a discontinuous transmission DTX event when the UE does not receive the feedback information of the downlink information in the preset time range;

The first determining module 801 3 is configured to determine that the UE is disconnected when the number of consecutive DTX events recorded by the first recording module 8012 exceeds a preset threshold.

For ease of understanding, the following describes the relationship between the units of the access device in this embodiment in a specific application scenario:

The access device in this embodiment may be an eNB, and the downlink information sent may be a data packet. After the eNB sends the data packet P1 to the UE, the first monitoring module 801 1 monitors the feedback information of the UE to confirm the UE receiving the data packet P 1 .

If the first monitoring module 801 1 does not detect the feedback information (ie, ACK or NACK) of the UE for the data packet P1 within a preset time range after the data packet P1 is sent to the UE (for example, within 4 milliseconds), then A recording module 8012 records a DTX event.

After the first recording module 8012 records the DTX event, the first determining module 801 3 can be implemented. It is determined whether the number of consecutive DTX events recorded exceeds a preset threshold.

If the first determining module 801 3 determines that the recorded consecutive DTX event exceeds the preset threshold, it indicates that the UE does not feed back the data packet sent by the eNB for a long time, and then it can be determined that the UE has been disconnected.

In this embodiment, after the first determining module 801 3 determines that the UE has been disconnected, the determining unit 803 determines whether the reason for the UE's detachment is that the UE has a cell handover, or is dropped, or the card is pulled, or is powered off, or If the radio is turned off, if the trigger release unit 802 performs the corresponding operation, the release unit 802 can immediately release the system resources allocated for the UE, and stop sending any downlink information to the UE, and stop monitoring accordingly.

Referring to FIG. 9, another embodiment of the access device of the present invention includes:

The obtaining unit 901 is configured to obtain the connection status of the user equipment UE by using real-time detection. The releasing unit 902 is configured to perform a connection release operation on the UE when the connection status acquired by the obtaining unit 901 indicates that the UE has been disconnected from the connection.

The access device in this embodiment may further include: a determining unit 903, configured to determine whether the reason for the detachment of the UE is a cell handover of the UE, or a call drop, a card pull, or a power failure, or The radio is turned off, and if so, the trigger release unit 902 performs the corresponding operation.

The obtaining unit 901 includes:

The second monitoring module 901 1 is configured to monitor the feedback information of the UE after sending the downlink information to the UE.

The second recording module 9012 is configured to record a discontinuous transmission DTX event when the UE does not receive the feedback information of the downlink information in the preset time range;

The second determining module 901 3 is configured to start a timer when the second recording module 9012 records the DTX event, and if the uplink information sent by the UE is not received before the timer expires, determining that the UE is disconnected.

The access device in this embodiment may be an eNB, and the downlink information sent may be a data packet. The second monitoring module 901 1 will feedback the UE after the eNB sends the data packet P1 to the UE. The information is monitored to confirm the UE's reception of the data packet PI.

If the second monitoring module 9011 does not detect feedback information (ie, ACK or NACK) of the UE for the data packet P1 within a preset time range after the data packet P1 is sent to the UE (for example, within 4 milliseconds), the second record Module 9012 records the DTX event.

After the second recording module 9012 records the DTX event, the second determining module 901 3 may start a timer and continue to wait for the uplink information (including the uplink data packet or the uplink signaling) sent by the UE within the timer range.

After the timer is started, the second determining module 901 3 may wait for the uplink information sent by the UE before the timer expires. If the uplink information sent by the UE is received before the timer expires, the UE is not disconnected from the connection. If the uplink information sent by the UE is not received before the timeout, the UE is disconnected.

If the second determining module 901 3 receives the uplink information sent by the UE before the timer expires, it indicates that the UE has not left the connection, and the eNB may continue to perform data transmission with the UE. The specific process is not limited herein.

If the second determining module 901 3 does not receive the uplink information sent by the UE before the timer expires, it indicates that the UE has detached from the connection.

In this embodiment, after the second determining module 901 3 determines that the UE has been disconnected, the determining unit 903 determines whether the reason for the UE's detachment is that the UE has a cell handover, or is dropped, or is pulled out, or is powered off, or If the radio is turned off, if the trigger release unit 902 performs the corresponding operation, the release unit 902 can immediately release the system resources allocated for the UE, and stop sending any downlink information to the UE, and stop monitoring accordingly.

Referring to FIG. 10, another embodiment of the access device of the present invention includes:

The obtaining unit 1001 is configured to acquire the connection status of the user equipment UE by using real-time detection. The releasing unit 1002 is configured to perform a connection release operation on the UE when the connection status acquired by the obtaining unit 1001 indicates that the UE has been disconnected.

The access device in this embodiment may further include: a determining unit 1003, configured to determine whether the reason for the disconnection of the UE is a cell handover of the UE, or a call drop, a card pull, or a power failure, or The radio is turned off, and if so, the release unit 1 002 is triggered to perform the corresponding operation. The obtaining unit 1001 includes:

The first judging module 10011 is configured to determine whether a message sent by the UE indicating that the UE has dropped the call is received;

The third determining module 10012 is configured to determine that the UE is disconnected when receiving a message sent by the UE indicating that the UE has dropped the call.

In this embodiment, the first determining module 10011 may determine, during the communication process, whether a message sent by the UE indicating that the UE has dropped the call is received.

It should be noted that the UE sends a radio connection re-establishment request message to request re-establishment after the dropped call under the same eNB. For details, refer to the 3rd Generation Partnership Project (3GPP, 3rd Genera-Tion Partner shi p Projec) t) The description of Section 5.3.7 of Agreement 36.331 is not limited here.

The sending of the MSG3 message by the UE may indicate that the UE re-enters the network after the abnormal call is dropped after the call is dropped or the radio is turned off.

It can be understood that, in this embodiment, only two types of messages are used as an example. In an actual application, the message indicating that the UE has dropped calls may be other types besides the above two types of messages. The specifics are not limited here.

If the first judging module 10011 determines that the message sent by the UE indicating that the UE has dropped the call is not received, the eNB continues to wait and performs other communication processing procedures.

If the first determining module 10011 determines that the message sent by the UE indicating that the UE has dropped the call is received, the third determining module 10012 may determine that the UE has detached from the connection.

In this embodiment, after the third determining module 10012 determines that the UE has been disconnected, the determining unit 1003 determines whether the reason for the UE's detachment is that the UE has a cell handover, or is dropped, or the card is powered off, or is powered off, or The radio is turned off, and if so, the trigger release unit 1002 performs a corresponding operation, and the release unit 1002 can immediately release the system resources allocated for the UE, and stop transmitting any downlink information to the UE.

Referring to FIG. 11, another embodiment of the access device of the present invention includes:

The acquiring unit 1101 is configured to acquire, by using real-time detection, a connection status of the user equipment UE. The releasing unit 1102 is configured to perform a connection release operation on the UE when the connection status acquired by the obtaining unit 101 indicates that the UE has been disconnected.

The access device in this embodiment may further include: a determining unit 203, configured to determine whether the reason for the detachment of the UE is a cell handover of the UE, or a call drop, a card pull, or a power failure, or The radio is turned off, and if so, the release unit 1 102 is triggered to perform the corresponding operation.

The obtaining unit 1101 includes:

The second determining module 11011 is configured to determine whether a message sent by another network element indicating that the UE initiates a cell handover is received;

The fourth determining module 11012 is configured to determine that the UE is disconnected when receiving a message sent by another network element indicating that the UE has a cell handover.

In this embodiment, the second determining module 1101 1 of the source cell eNB can determine whether a message sent by another network element indicating that the UE has a cell handover is received.

The message may be a radio link failure (RLF) sent by the target cell eNB in an actual application.

The indication message, or the handover report (Handover Repor) message sent by the target cell eNB, or the UE context release (UE Context Re ea se ) message sent by the target cell eNB, or the data forwarding gateway sends The End Marker message, or the handover complete message sent by the different system access device, or the custom release message sent by the target cell eNB.

It should be noted that the RLF indication message sent by the target cell eNB is used to describe the failure of the establishment of the radio link. For the specific procedure, refer to the description in Section 8.3 of the 3GPP protocol 36. 423, which is not limited herein.

The End Marker message sent by the Data Forwarding Gateway indicates that this is the last packet sent to the source cell eNB, and subsequent packets will be sent to the target cell eNB.

The handover complete message sent by the different system access device is used to indicate that the UE has switched to a different system cell. The target cell eNB may also enable the source cell eNB to perform a connection release operation on the UE by customizing some new messages, such as a custom release message.

If the second judging module 1101 1 of the source cell eNB determines that the message sent by the other network element to indicate that the UE has a cell handover is not received, the source cell eNB continues to wait and performs other communication processing procedures.

If the second determining module 11 011 of the source cell eNB determines that a message sent by another network element indicating that the UE has a cell handover is received, the fourth determining module 11012 determines that the UE has detached from the connection.

In this embodiment, after the fourth determining module 11012 determines that the UE has been disconnected, the determining unit 1103 determines whether the reason for the UE's detachment is that the UE has a cell handover, or is dropped, or is pulled out, or is powered off, or The radio is turned off, and if so, the trigger release unit 1102 performs a corresponding operation, and the release unit 1102 can immediately release the system resources allocated for the UE, and stop transmitting any downlink information to the UE.

A person skilled in the art can clearly understand that the specific working process of the system, the device and the unit described above can be referred to the corresponding process in the foregoing method embodiments for the convenience and brevity of the description, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form. The component displayed as a unit may or may not be a physical unit, that is, may be located in one place Square, or it can be distributed to multiple network elements. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a USB flash drive, a mobile hard disk, and a read only memory (ROM,

Read-Only Memory), random access memory (RAM, Random Acces s Memory), disk or optical disk, and other media that can store program code.

The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the embodiments are modified, or the equivalents of the technical features are replaced by the equivalents; and the modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention. .

Claims

Rights request

A resource release control method, comprising:

The access device acquires the connection status of the UE of the user equipment by using real-time detection;

If the connection status indicates that the UE has been disconnected, the access device performs a connection release operation on the UE.

The method according to claim 1, wherein before the performing, by the access device, performing a connection release operation on the UE, the method further includes:

Determining whether the reason for the detachment of the UE is that the UE performs cell handover, or is dropped, or is for card disconnection, or is powered off, or is to turn off the radio. If yes, the access device is triggered to perform connection release on the UE. The steps of the operation.

The method according to claim 1 or 2, wherein the performing, by the access device, the connection release operation to the UE comprises:

The access device releases system resources allocated for the UE, and stops sending downlink information to the UE.

The method according to claim 1, wherein the obtaining, by the access device, the connection status of the user equipment UE by using real-time detection includes:

After the downlink device sends the downlink information to the UE, the UE monitors the feedback information of the UE.

And if the access device does not receive the feedback information of the UE for the downlink information within a preset time range, recording a discontinuous transmission DTX event;

When the number of consecutive DTX events recorded exceeds a preset threshold, the access device determines that the UE is disconnected.

The method according to claim 1, wherein the acquiring, by the access device, the connection status of the user equipment UE by using real-time detection includes:

When the DTX event is recorded, the access device starts a timer, and if the uplink information sent by the UE is not received before the timer expires, the access device determines that the UE is off. Connected.

6. The method according to claim 4 or 5, wherein the feedback information is information on a physical uplink channel.

The method according to claim 1 or 2, wherein the obtaining, by the access device, the connection status of the user equipment UE by real-time detection comprises:

Determining, by the access device, a message sent by the UE indicating that the UE has dropped the call;

If yes, the access device determines that the UE is disconnected.

The method according to claim 7, wherein the message sent by the UE indicating that the UE has dropped calls includes:

The wireless connection re-establishes the request message, or the message 3 message.

The access device determines whether a message sent by another network element indicating that the UE has a cell handover is received;

If yes, the access device determines that the UE is disconnected.

The method according to claim 9, wherein the message sent by the other network element indicating that the UE has a cell handover includes:

a radio link failure indication message sent by the target cell access device, or a handover report message sent by the target cell access device, or a UE context release message sent by the target cell access device, or an end tag indication message sent by the data forwarding gateway, Or a handover complete message sent by the different system access device, or a customized release message sent by the target cell access device.

An access device, comprising:

And an obtaining unit, configured to acquire a connection state of the user equipment UE by using real-time detection, and a releasing unit, configured to perform a connection release operation on the UE when the connection status acquired by the acquiring unit indicates that the UE has been disconnected from the connection.

The access device according to claim 11, wherein the access device further includes:

a determining unit, configured to determine whether the disconnection reason of the UE is a cell handover, or a call drop, or a card is disconnected, or the power is turned off, or the radio is turned off; if yes, the release unit is triggered to perform a release operation. .

The access device according to claim 11 or 12, wherein the obtaining unit comprises:

a first monitoring module, configured to monitor feedback information of the UE after sending downlink information to the UE;

a first recording module, configured to record a discontinuous transmission DTX event when the UE does not receive feedback information about the downlink information within a preset time range;

The first determining module is configured to determine that the UE is disconnected when the number of consecutive DTX events recorded by the first recording module exceeds a preset threshold.

The access device according to claim 11 or 12, wherein the acquiring unit comprises:

a second monitoring module, configured to monitor feedback information of the UE after sending downlink information to the UE;

a second recording module, configured to record a discontinuous transmission DTX event when the feedback information of the UE for the downlink information is not received within a preset time range;

a second determining module, configured to start a timer when the second recording module records a DTX event, and if the uplink information sent by the UE is not received before the timer expires, determining that the UE is disconnected connection.

a first determining module, configured to determine whether a message sent by the UE indicating that the UE has dropped the call is received;

And a third determining module, configured to determine, when the UE sends a message indicating that the UE has dropped the call, determining that the UE is disconnected.

a second judging module, configured to determine whether a message sent by another network element indicating that the UE has a cell handover is received;

And a fourth determining module, configured to determine that the UE is disconnected when receiving a message that is sent by another network element to indicate that the UE has a cell handover.