CN101299878A - Method for monitoring channel switching process as well as terminal and general access network controller - Google Patents
Method for monitoring channel switching process as well as terminal and general access network controller Download PDFInfo
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Abstract
The invention discloses a method for monitoring packet transmission channel in the switching process between access network sub-districts and other sub-districts using random access techniques. In the packet transmission channel switch process, the terminal or universal access network controller triggers the releasing protection operations to packet transmission channel, thereby avoiding the release of packet transmission channel. The invention also discloses the corresponding terminal and universal access network controller. Since the invention logically links together the packet transmission channel switch process and the monitoring of the packet transmission channel, the packet transmission channel will not release beforehand in the switching process, and the terminal can smoothly and timely come back in the source sub-district for avoiding service jitter when abnormity occurs in the switching process.
Description
Technical Field
The present invention relates to the field of mobile communication technology, and in particular, to a monitoring method in a packet transport channel switching process related to a generic access network, and a corresponding terminal and generic access network controller.
Background
In a mobile communication network, an access network serves as a bridge between a terminal user and a core switching network, and the communication capability of the access network directly influences the experience of the user on mobile services. With the continuous development of the short-range wireless communication technology, the advantages of high access bandwidth and low communication cost are increasingly emphasized. The way of providing wireless access in an unlicensed frequency band based on a short-range wireless communication technology is rapidly popularized, and the short-range wireless access technology coexists with a traditional wireless access network in a local area or even a metropolitan area. Therefore, seamless handover and roaming between conventional Radio Access networks, such as Universal Mobile Telecommunications System (UMTS) terrestrial Radio Access Network (UTRAN) and Global System for Mobile communications (GSM) Access networks and Enhanced data rate versions thereof (EDGE) Access networks of Universal Mobile Telecommunications System (UMTS) and GSM for Mobile communications (GSM for GSM Evolution) and general Access networks (GAN: Generic Access networks) employing Unlicensed Mobile Access (UMA) are a hot spot.
In GAN, a mobile terminal is connected to a Generic Access Network Controller (GANC) for communication through a Generic Access IP Network (Generic Access IP Network), and the GANC corresponds to a Base Station Subsystem (BSS) of a GERAN cell. Wherein the generic access IP network provides a wireless access point.
The mobile terminal and the GANC transmit user data by establishing a data transmission channel, so that the mobile terminal can respectively perform grouping and circuit domain services or simultaneously perform the grouping and circuit domain services. A packet Transport Channel for packet user data transmission between a mobile terminal and a GANC is called a generic access packet switched resource Transport Channel (GA-PSR Transport Channel), and a general method for packet data transmission using the Channel is shown in fig. 1 and includes:
1. executing the activation flow of the GA-PSR Transport Channel, and after the Channel is activated, starting a packet Channel Timer (GA-PSR Channel Timer) by the terminal;
2. the terminal encapsulates the uplink packet data, sends the uplink packet data to the GANC and restarts the packet channel timer;
3. the GANC forwards the received uplink packet data to a Core Network (CN);
4. the CN transmits the downlink packet data to the GANC;
5. the GANC confirms that the GA-PSR Transport Channel of the corresponding terminal is available, packages the downlink packet data and sends the downlink packet data to the terminal, and restarts the packet Channel timer when the terminal receives the message;
6. the grouped data transmission process comprises steps 2-5, and can be carried out for a plurality of times;
7. in the process of the packet data transmission, when the packet Channel timer is overtime, the terminal sends packet transmission Channel release information to the GANC, the corresponding GA-PSR Transport Channel is released, and the packet data transmission is finished.
As can be seen from the above description, the packet transport channel between the terminal and the GANC is monitored by a packet channel timer, and once the timer expires, the terminal triggers the release procedure of the GA-PSR transport channel.
Furthermore, while the traffic between the terminal and the GANC is ongoing, it may be necessary to handover the terminal to another radio access network cell, e.g. a certain GERAN cell, due to a link failure between the terminal and the GANC or for other reasons. If the service performed by the terminal includes a packet data service, it is necessary to perform packet transport channel switching. Throughout a wireless network, the GANC is typically configured as a cell within a routing area or location area, which enables handover and roaming between GANs and other access networks. When switching the packet transmission channel, the terminal executes the switching to the target cell according to the switching command issued by the source GANC. If a handover failure occurs, the terminal needs to return to the source GAN cell.
It should be noted that the term "packet transmission channel switching" herein has a general meaning, and generally refers to various types of objects to be switched including a packet transmission channel. For example, the packet switching type in which only the packet transfer channel is switched is included, and the hybrid switching type in which the packet transfer channel and other channels are switched in a hybrid manner is also included. In the case of hybrid handover, the term "packet transport channel handover" herein refers to the portion of the hybrid handover that is associated with the handover of the packet transport channel.
In the process of the invention, the inventor finds that at least the following problems exist in the prior art: in GAN, there is no logical association between the existing packet transport channel switching procedure and the monitoring of the packet transport channel. This results in the possibility that the terminal may fail handover, need to return to the source GAN cell, and the packet channel timer used to monitor the packet transport channel has expired and triggered the packet channel release procedure between the terminal and the GANC, resulting in the packet channel between the terminal and the source GANC being unavailable and needing to be reactivated, causing some traffic jitter.
Disclosure of Invention
The embodiment of the invention provides a monitoring method in the packet transmission channel switching process, which can avoid service jitter caused when the packet transmission channel is failed to be switched. One of them includes: in the process that a terminal switches a packet transmission channel from a source general access network cell to a target cell, the terminal triggers a release protection operation on the occupied packet transmission channel in the general access network, wherein the release protection operation is used for avoiding executing the release of the packet transmission channel; or, the source generic access network controller triggers a release protection operation on the packet transport channel, where the release protection operation is used to refuse to release the packet transport channel.
The other method comprises the following steps: in the process of switching the packet transmission channel from the source cell to the target general access network cell, the target general access network controller establishes the packet transmission channel for the terminal, triggers the monitoring of the packet transmission channel, and releases the established packet transmission channel when the set monitoring condition is achieved.
The embodiment of the invention also provides a corresponding terminal, which comprises: a handover processing unit for performing a packet transport channel handover from a source generic access network cell to a target cell; a channel release protection unit, configured to trigger a release protection operation on an occupied packet transmission channel in a generic access network in a process that the switching processing unit performs packet transmission channel switching, where the release protection operation is used to avoid performing release of the packet transmission channel.
And a generic access network controller. One of them includes: the switching-out processing unit is used for executing the packet transmission channel switching of the terminal from the current general access network cell to the target cell; the first channel control unit is used for receiving the packet transmission channel release information sent by the terminal; and judging whether the switching-out processing unit executes the switching of the packet transmission channel of the terminal, if so, refusing to release the packet transmission channel.
The other method comprises the following steps: the cut-in processing unit is used for executing the packet transmission channel switching of the terminal from the source cell to the current general access network cell; and the second channel control unit is used for triggering the monitoring of the packet transmission channel after the hand-in processing unit establishes the packet transmission channel for the terminal, and releasing the established packet transmission channel when the set monitoring condition is achieved.
The embodiment of the invention adopts a method that a terminal or a universal access network controller triggers the release protection operation of the packet transmission channel in the packet transmission channel switching process, thereby avoiding sending or refusing to execute the release information of the packet transmission channel. Because the switching process of the packet transmission channel and the monitoring of the packet transmission channel are logically connected, the packet transmission channel can not be released prematurely in the switching process, and when the switching is abnormal, the terminal can smoothly and timely return to the source general access network cell, thereby avoiding service jitter.
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Fig. 1 is a schematic flow chart of a method for packet user data transmission between a conventional terminal and a GANC;
FIG. 2 is a flow chart illustrating a monitoring method in a packet transmission channel switching process according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a monitoring method in a packet transport channel switching process according to a second embodiment of the present invention;
fig. 4 is a flowchart illustrating a monitoring method in a packet transport channel switching process according to a third embodiment of the present invention;
fig. 5 is a flowchart illustrating a monitoring method in a packet transport channel switching process according to a fourth embodiment of the present invention;
fig. 6 is a flowchart illustrating a monitoring method in a packet transport channel switching process according to a fifth embodiment of the present invention;
fig. 7 is a flowchart illustrating a monitoring method in a packet transport channel switching process according to a sixth embodiment of the present invention;
fig. 8 is a schematic logical structure diagram of a terminal according to a seventh embodiment of the present invention;
fig. 9 is a schematic logical structure diagram of a terminal according to an eighth embodiment of the present invention;
fig. 10 is a schematic diagram of a logical structure of a terminal according to a ninth embodiment of the present invention;
fig. 11 is a schematic logical structure diagram of a terminal according to a tenth embodiment of the present invention;
fig. 12 is a schematic diagram of a logical structure of a generic access network controller according to an eleventh embodiment of the present invention;
fig. 13 is a schematic diagram of a logical structure of a generic access network controller according to a twelfth embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a monitoring method in the packet transmission channel switching process, in the packet transmission channel switching process from a source GAN cell to a target cell, a terminal or a universal access network controller triggers the release protection operation of the packet transmission channel, and the packet transmission channel release information is prevented from being sent or refused to be executed. The embodiment of the invention further provides a monitoring method in the switching process of the packet transmission channel from the source cell to the target GAN cell. In addition, the embodiment of the invention also provides a corresponding terminal and a universal access network controller. The method and apparatus of the embodiments of the present invention are described in detail below.
In an embodiment, a monitoring method in a packet transport channel handover process relates to handover of a terminal from a source GAN cell to another cell using a Radio Access Technology (RAT), where the RAT may be GERAN, UTRAN, or GAN, and a packet service is performed between the terminal and a network. The method flow is shown in fig. 2, and includes:
a1, the terminal judges that the terminal is in the switching process of the packet transmission channel of the switching source GAN cell;
in GAN, packet transport channel switching leaving a source GAN cell may be initiated by a GANC or a terminal, in this embodiment, several specific triggering manners are given, and in different triggering manners, the terminal may make a judgment in the packet transport channel switching process according to corresponding information:
firstly, the switching is triggered by the terminal. The terminal finds that the quality of the GA-PSRTransport Channel between the terminal and the GANC is reduced through local measurement, therefore, a switching reference message (GA-PSR Handoverinformation) is sent to the GANC, and the GANC sends packet transmission Channel switching preparation request information (PSHandoverRequired) to the core network side according to the switching reference message, and starts to execute switching.
In this way, the terminal may determine that the terminal is in the handover process based on sending the handover reference message.
And secondly, the switching is triggered by the GANC. The GANC measures GA-PSR Transport Channel conditions of a given terminal, including error rate, delay, and system load. And the GANC selects a target cell when the quality of the GA-PSR transport channel of the terminal is reduced to a certain degree according to the self measurement result and system configuration, such as GERAN or UTRAN adjacent cell configuration and the like, sends packet transport channel switching preparation request information to the core network side, and starts to execute the switching. And after the GANC initiates the switching, the GANC informs the terminal.
In this way, the terminal may determine that the terminal is in the handover process based on the received handover notification.
And thirdly, the switching is triggered by the GANC and then judged by the terminal. The GANC can send the Indication information of the link Quality (GA-PSRUPLINK Quality Indication) to the terminal when finding that the GA-PSRTransport Channel Quality is reduced to a certain degree, indicating that the switching is needed, the terminal judges that the switching reference information needs to be sent to the GANC according to the received Indication information of the link Quality, and the GANC sends the request information of the packet transmission Channel switching preparation to the core network side according to the information, and starts the execution of the switching.
In this way, the terminal may determine that the terminal is in the handover process based on receiving the link quality indication information or based on sending the handover reference message.
It should be understood that the above-listed judgment modes are only examples, are not exhaustive, and do not limit the embodiments of the present invention.
A2, the terminal triggers the release protection operation of the packet transmission channel in the occupied general access network, and the release protection operation is used for avoiding the release of the packet transmission channel;
and after judging that the packet transmission Channel is switched out of the source GAN cell according to the related information, the terminal triggers the protection releasing operation of the GA-PSR Transport Channel. Because a GA-PSR Transport Channel Timer is generally adopted to monitor a GA-PSR Transport Channel at present, a simple and direct execution mode of the release protection operation is provided in this embodiment, that is: the operation of the packet channel timer is stopped. Thus, during the switching of the packet transmission channel, the packet transmission channel release information is not triggered to be sent to the source GANC due to the timeout of the packet channel timer, thereby avoiding the release of the packet transmission channel. And if the terminal returns to the source GAN cell again due to switching failure, the packet Channel timer is restarted, and the GA-PSR Transport Channel is continuously used for data transmission to enter a normal monitoring process.
In this embodiment, the packet transport channel switching process and the monitoring of the packet transport channel are logically associated, and a simple and direct release protection operation execution mode is provided, so that the packet transport channel is not prematurely released in the switching process, and when the switching is abnormal, the terminal can smoothly and timely return to the source general access network cell, thereby avoiding causing service jitter.
The second embodiment is a monitoring method in a packet transport channel switching process, and the second embodiment relates to packet transport channel switching from a source GAN cell to a target RAT cell of a terminal. The main difference between this embodiment and the first embodiment is that the execution of the release protection operation is triggered by the source GANC. The method flow is shown in fig. 3, and includes:
b1, source GANC judges that a certain terminal is in the switching process of the packet transmission channel switched out of the cell;
under different packet transmission channel switching triggering modes, the source GANC can judge that the terminal is in the packet transmission channel switching process according to corresponding information. For example, in the first embodiment, the source GANC may determine that the relevant terminal is in the handover process based on receiving the handover reference message or based on sending the packet transport channel handover preparation request message; in the second mode, the source GANC may determine that the relevant terminal is in the switching process based on sending the packet transport channel switching preparation request information; in the third mode, the source GANC may determine that the related terminal is in the handover process based on sending the link quality indication message, or based on receiving the handover reference message, or based on sending the packet transport channel handover preparation request message.
And when the source GANC receives or generates the information of canceling or failing or successfully finishing the switching of the terminal packet transmission channel, judging that the related terminal is not in the switching process.
B2, the source GANC triggers the release protection operation of the packet transmission channel occupied by the terminal, and the release protection operation is used for refusing to release the packet transmission channel.
The source GANC may perform the determination in step B1 after receiving the packet transport channel release information sent by the terminal, and trigger a release protection operation if it is determined that the terminal is in the handover process, that is, refuse to execute the packet transport channel release, and may or may not return a release rejection information to the terminal, where the release rejection information may include a rejection reason, such as during handover.
The source GANC may also trigger a release protection operation after determining that the terminal is in the process of handover, for example, start a timer for the terminal, and refuse to execute if receiving packet transmission channel release information sent by the terminal during the operation of the timer, or return reject release information, where the reject release information may include a reject reason, such as in the process of handover; the source GANC may close the corresponding timer and resume normal response to the packet transport channel release information when it is determined that the relevant terminal is no longer in the handover process.
In this embodiment, when the terminal performs packet transmission channel switching to switch out of the cell, the source GANC performs release protection operation on the packet transmission channel occupied by the terminal, so that the packet transmission channel is not prematurely released in the switching process, and when the switching is abnormal, the terminal can smoothly and timely return to the source general access network cell, thereby avoiding service jitter. Meanwhile, the source GANC can be improved in a centralized manner, so that inconvenience caused by terminal upgrading is avoided.
The third embodiment is a monitoring method in a packet transport channel switching process, and the third embodiment relates to packet transport channel switching from a source GAN cell to a target RAT cell of a terminal. The present embodiment is different from the first embodiment in that another specific way of the terminal to perform the protection releasing operation is provided. The method flow is shown in fig. 4, and includes:
c1, the terminal judges that the terminal is in the packet transmission channel switching process of switching out the source GAN cell;
the specific judgment method can be as described in the first embodiment.
C2, the terminal triggers the release protection operation of the occupied packet transmission channel in the universal access network, i.e. monitoring the operation of the packet channel timer, restarting the packet channel timer after the packet channel timer is overtime, and not triggering the release of the packet transmission channel, such as: the transmission of the packet transport channel release information is not triggered.
Restarting the packet channel timer may define a maximum number of times, and after the number of times of restarting reaches the maximum number of times, the packet channel timer is not restarted, but rather a release of the packet transport channel is triggered, such as sending a packet transport channel release message. The maximum number may be monitored using a counter that increments by 1, such as every time the timer is restarted. The counter may be initialized when the channel is established, released, switched, etc., e.g., with a value of 0.
In this embodiment, the packet transmission channel switching process and the monitoring of the packet transmission channel are logically associated, so that the packet transmission channel is not prematurely released in the switching process, and when the switching is abnormal, the terminal can smoothly and timely return to the source universal access network cell, thereby avoiding service jitter.
The fourth embodiment is a monitoring method in a packet transport channel switching process, and the fourth embodiment relates to packet transport channel switching from a source GAN cell to a target RAT cell for a terminal. The present embodiment is different from the first embodiment in that a specific way for the terminal to perform the protection releasing operation is provided. The method flow is shown in fig. 5, and includes:
d1, the terminal judges that the terminal is in the packet transmission channel switching process of switching out the source GAN cell;
the specific judgment method can be as described in the first embodiment.
D2, the terminal triggers the protection releasing operation of the occupied packet transmission channel in the generic access network, that is:
d21, starting a first timer;
d22, after the packet channel timer is overtime, determining whether the first timer is overtime, if not, not triggering the release operation of the packet transmission channel, for example, not triggering the transmission of the release information of the packet transmission channel, and making the packet channel timer count again. In general, the timing length of the first timer is greater than the timing length of the packet channel timer.
The first timer may be stopped when the terminal determines that the target cell has been successfully accessed.
The timing length of the first timer may be set by the terminal, or may be signaled by the GANC to the terminal for setting.
In this embodiment, the packet transport channel switching process and the monitoring of the packet transport channel are logically associated, and an additional timer is used to monitor the sending of the packet transport channel release information again, so that the packet transport channel is not prematurely released in the switching process, and when the switching is abnormal, the terminal can smoothly and timely return to the source general access network cell, thereby avoiding causing service jitter.
Fifth, a monitoring method in a packet transport channel handover process, which relates to a packet transport channel handover of a terminal from a source GAN cell to a target RAT cell. The present embodiment is different from the first embodiment in that a further specific way for the terminal to perform the release protection operation is provided. The method flow is shown in fig. 6, and includes:
e1, the terminal judges that the terminal is in the packet transmission channel switching process of switching out the source GAN cell;
the specific judgment method can be as described in the first embodiment.
E2, the terminal receives the release information of releasing the packet transmission channel;
this information is typically sent by the source GANC to the terminal;
e3, the terminal triggers the protection releasing operation of the occupied packet transmission channel in the generic access network, that is: the release information is not executed, or the release information is not executed and the release refusing information is returned, and the release refusing information can contain refusing reasons, such as switching in progress.
The method in this embodiment may be used simultaneously with the method in the first, third, or fourth embodiment, and release protection is performed on the packet transport channel for packet transport channel release operations that may be generated by the terminal itself and the network side, respectively.
In this embodiment, the packet transport channel switching process and the monitoring of the packet transport channel are logically associated, and the terminal performs a rejection operation when the source GANC initiates the release of the packet transport channel, so that the packet transport channel is not prematurely released in the switching process, and when the switching is abnormal, the terminal can smoothly and timely return to the source general access network cell, thereby avoiding causing service jitter.
Sixth embodiment, a monitoring method in a packet transport channel handover process, where the present embodiment relates to a packet transport channel handover of a terminal from a source RAT cell to a target GAN cell, and a flow of the method is shown in fig. 7, where the method includes:
f1, the target GANC establishes a packet transmission channel for a terminal needing to switch into the local cell;
when the terminal performs packet transmission Channel switching from a source RAT cell to a target GAN cell for some reason, the target GANC receives switching preparation information sent by a core network and establishes a GA-PSR Transport Channel for the terminal according to the information.
F2, after establishing the packet transmission channel, the target GANC triggers the monitoring of the packet transmission channel, and releases the established packet transmission channel when the set monitoring condition is fulfilled. In this embodiment, two simple and easy monitoring modes are provided, which may be alternatively or concurrently adopted, including:
in a first way,
F21, starting a second timer for the established packet transmission channel;
f22, after the second timer is overtime, judging whether the packet transmission channel switching of the corresponding terminal is successfully completed, if not, releasing the established packet transmission channel; and, the target GANC can further notify the source network that the handover fails; and judging whether the link resource to the core network is established or not, if so, releasing.
The timing length of the second timer can be set by the GANC itself or through network configuration.
The second way,
F23, the target GANC judges whether the terminal needing switching in cancels registration when the switching is not completed successfully, and the judgment can be based on that the target GANC receives a deregistration message (GA-RC register) sent by the terminal or that the target GANC sends the deregistration message to the terminal; if yes, releasing the established packet transmission channel and informing the source network of the switching failure; and judging whether the link resource to the core network is established or not, if so, releasing.
In the two manners, the successful completion of the packet transmission channel switching of the terminal is judged, which may be based on the reception of uplink packet data or signaling sent by the terminal, or based on the reception of a switching completion message sent by the terminal.
The method of this embodiment can be used in combination with the first to fifth embodiments, and monitors the corresponding packet transmission channel when the terminal switches in and out the GAN cell.
In the existing process of switching into a GAN cell, when a terminal receives a switching command of a source cell and is switched to a target GAN cell, if the connection is abnormal and the terminal is lost, the GANC may not receive uplink data or a switching completion message of the terminal, and meanwhile, the source GANC has no effective monitoring means and can release the established GA-PSR Transportchannel only after the terminal is considered to be unregistered; in addition, the source GANC cannot timely release resources between the GANC and the core network, which causes resource waste. In this embodiment, the packet transport channel switching process and the monitoring of the packet transport channel are logically associated, and the source GANC monitors the packet transport channel established for the hand-in terminal, so that resources can be released in time under the condition of abnormal switching, and resource waste caused by the fact that the loss of the terminal cannot be detected in time is avoided.
Seventh embodiment, a terminal, as shown in fig. 8, includes:
a handover processing unit 11, configured to perform packet transport channel handover from a source generic access network cell to a target cell;
a packet channel timer 12 for timing;
a channel release protection unit 13, configured to trigger a release protection operation on an occupied packet transport channel in the generic access network in a process that the handover processing unit 11 performs packet transport channel handover, where the release protection operation is used to avoid sending packet transport channel release information to the source generic access network controller; in this embodiment, the protection releasing operation triggered by the channel protection releasing unit 12 is embodied as sending an instruction to stop running to the packet channel timer 12;
a channel monitoring unit 14, configured to monitor the packet channel timer 12, and send packet transport channel release information to the source generic access network controller after the packet channel timer 12 times out;
the terminal of the embodiment can be applied to the monitoring method in the packet transmission channel switching process provided in the first embodiment.
Eighth embodiment, a terminal, as shown in fig. 9, includes:
a handover processing unit 21 configured to perform a packet transport channel handover from a source generic access network cell to a target cell;
a packet channel timer 22 for timing;
a channel release protection unit 23, configured to trigger a release protection operation on an occupied packet transmission channel in the generic access network in a process that the switching processing unit 21 performs packet transmission channel switching, that is, monitor operation of the packet channel timer 22, and send a restart instruction to the packet channel timer 22 after the packet channel timer 22 times out;
a channel monitoring unit 24, configured to monitor the packet channel timer 22, and after the packet channel timer 22 times out, determine whether the packet channel timer 22 is restarted, if yes, not send packet transport channel release information to the source generic access network controller; if not, sending packet transmission channel release information to the source universal access network controller;
the terminal of the embodiment can be applied to the monitoring method in the packet transmission channel switching process provided by the third embodiment.
Ninth embodiment, a terminal, as shown in fig. 10, includes:
a handover processing unit 31 for performing a packet transport channel handover from a source generic access network cell to a target cell;
a packet channel timer 32 for timing;
a first timer 33 for timing;
a channel release protection unit 34, configured to trigger a release protection operation on an occupied packet transmission channel in the universal access network in a process that the switching processing unit 31 performs packet transmission channel switching, that is, send a start instruction to the first timer 33;
a channel monitoring unit 35, configured to monitor the packet channel timer 32, after the packet channel timer 32 times out, determine whether the first timer 33 times out, if not, not send packet transmission channel release information to the source generic access network controller, and restart the packet channel timer 32; and if so, sending packet transmission channel release information to the source universal access network controller.
The terminal of the embodiment can be applied to the monitoring method in the packet transmission channel switching process provided by the fourth embodiment.
Tenth embodiment, a terminal, as shown in fig. 11, includes:
a handover processing unit 41, configured to perform packet transport channel handover from a source generic access network cell to a target cell;
an information receiving unit 42 for receiving release information for releasing the packet transmission channel;
a channel release protection unit 43, configured to trigger a release protection operation when the information receiving unit 42 receives release information for releasing the packet transmission channel, and not execute the release information, or not execute the release information and return release rejection information.
The terminal of the embodiment can be applied to the monitoring method in the packet transmission channel switching process provided by the fifth embodiment. In addition, the information receiving unit and the channel release protection unit of the terminal in this embodiment may be merged and configured in the terminal in the seventh, eighth, or ninth embodiment, and the specific configuration may be that the information receiving unit is added in the terminal in the seventh, eighth, or ninth embodiment, and the function of the channel release protection unit in this embodiment is merged in the original channel release protection unit.
An eleventh embodiment is a generic access network controller, as shown in fig. 12, including:
a switching-out processing unit 51, configured to perform packet transmission channel switching from a current generic access network cell to a target cell;
a first channel control unit 52, configured to receive packet transmission channel release information sent by the terminal; judging whether the switching processing unit 51 is executing the switching of the packet transmission channel of the terminal, if so, refusing to release the packet transmission channel. The first channel control unit 42 may also return release rejection information to the terminal when the release information transmitted by the terminal is not executed.
The generic access network controller in this embodiment can monitor the packet transport channel occupied by the terminal that cuts out the GAN cell, and may be applied to the monitoring method in the packet transport channel switching process provided in the second embodiment.
An embodiment twelve is a generic access network controller, as shown in fig. 13, including:
a hand-in processing unit 61, configured to perform packet transmission channel switching from other source cells to the current generic access network cell;
and the second channel control unit 62 is configured to trigger monitoring of the packet transmission channel after the hand-in processing unit 61 establishes the packet transmission channel for the terminal, and release the established packet transmission channel when the set monitoring condition is met. In this embodiment, the second channel control units 62 may alternatively or jointly use the following two structures, for the sake of brevity, fig. 13 only shows the case where the second channel control units 62 jointly use two structures, and in practice, one group of structures may be deleted arbitrarily.
The first structure comprises:
a second timer 621 for timing;
the first control subunit 622, configured to send a start instruction to the second timer 621 and monitor the second timer 621 after the hand-in processing unit 61 establishes the packet transmission channel for the terminal; after the second timer 621 times out, it is determined whether the handover of the terminal is successfully completed, and if not, the established packet transport channel is released to notify the source network that the handover fails; and judging whether the link resource to the core network is established or not, if so, releasing.
The second structure comprises:
a registration monitoring unit 623, configured to determine, after the hand-in processing unit 61 establishes a packet transmission channel for the terminal, whether the terminal cancels registration when handover is not successfully completed;
a second control subunit 624, configured to release the established packet transmission channel when the registration monitoring unit 623 determines that the packet transmission channel is established, and notify the source network that the handover fails; and judging whether the link resource to the core network is established or not, if so, releasing.
The generic access network controller in this embodiment can monitor the packet transport channel occupied by the terminal that is handed into the GAN cell, and may be applied to the monitoring method in the packet transport channel switching process provided in the sixth embodiment.
In practical applications, the logical structures of the generic access network controllers provided in the eleventh and twelfth embodiments may be combined, so that the combined generic access network controller can support the monitoring function for the packet transport channels occupied by the terminals switching in and out of the GAN cell.
It can be seen from the above embodiments that the application of the embodiments of the present invention logically associates the packet transmission channel switching process with the monitoring of the packet transmission channel; when the terminal is switched out from the GAN cell, the packet transmission channel is not released prematurely in the switching process, and when the switching is abnormal, the terminal can smoothly and timely return to the source general access network cell, so that service jitter is avoided; when the terminal is switched into the GAN cell, resources can be released in time once switching abnormity such as terminal loss occurs, and resource waste caused by the fact that the terminal loss cannot be detected in time is avoided.
The monitoring method in the packet transport channel switching process, the corresponding terminal and the generic access network controller provided by the present invention are introduced in detail above, and a specific example is applied in the present document to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (19)
1. A monitoring method in the switching process of a packet transmission channel is characterized in that: in the process that the terminal carries out the packet transmission channel switching from the source general access network cell to the target cell,
the terminal triggers the release protection operation of the packet transmission channel in the occupied general access network, wherein the release protection operation is used for avoiding the release of the packet transmission channel; or,
and triggering a release protection operation on the packet transmission channel by a source universal access network controller, wherein the release protection operation is used for refusing to release the packet transmission channel.
2. The monitoring method according to claim 1, wherein the terminal-triggered release protection operation comprises: the operation of the packet channel timer is stopped.
3. The monitoring method according to claim 1, wherein the terminal-triggered release protection operation comprises: and monitoring the operation of a packet channel timer, restarting the packet channel timer after the packet channel timer is overtime, and not triggering the releasing operation of the packet transmission channel.
4. The monitoring method according to claim 1, wherein the terminal-triggered release protection operation comprises: and when receiving the release information for releasing the packet transmission channel, not executing the release information, or not executing the release information and returning the release refusal information.
5. The monitoring method according to claim 1, wherein the terminal-triggered release protection operation comprises:
starting a first timer;
and after the packet channel timer is overtime, judging whether the first timer is overtime, if not, not triggering the releasing operation of the packet transmission channel.
6. The monitoring method in packet transmission channel switching process according to claim 1, characterized in that: the release protection operation triggered by the source generic access network controller comprises: and when the release information of the terminal for releasing the packet transmission channel is received, the release information is not executed, or the release information is not executed and release refusing information is returned.
7. A monitoring method in the switching process of a packet transmission channel is characterized in that: in the process of switching the packet transmission channel from the source cell to the target general access network cell by the terminal,
and after the target universal access network controller establishes the packet transmission channel for the terminal, triggering the monitoring of the packet transmission channel, and releasing the established packet transmission channel when the set monitoring condition is achieved.
8. The method for monitoring during packet transmission channel switching according to claim 7, wherein the step of monitoring the packet transmission channel comprises:
starting a second timer;
and after the second timer is overtime, judging whether the switching is successfully completed, if not, releasing the established packet transmission channel.
9. The monitoring method in the packet transmission channel switching process according to claim 8, wherein the step of monitoring the packet transmission channel further comprises: after the second timer is overtime and when the switching is judged to be unsuccessfully completed, the source network is informed that the switching is failed; and judging whether the link resource to the core network is established or not, if so, releasing.
10. The method for monitoring during packet transmission channel switching according to any one of claims 7 to 9, wherein the step of monitoring the packet transmission channel comprises: judging whether the terminal cancels registration when the switching is not completed successfully, if so, releasing the established packet transmission channel and informing a source network of the failure of the switching; and judging whether the link resource to the core network is established or not, if so, releasing.
11. A terminal, comprising:
a handover processing unit for performing a packet transport channel handover from a source generic access network cell to a target cell;
a channel release protection unit, configured to trigger a release protection operation on an occupied packet transmission channel in a generic access network in a process that the switching processing unit performs packet transmission channel switching, where the release protection operation is used to avoid performing release of the packet transmission channel.
12. The terminal of claim 11, further comprising:
a packet channel timer for timing;
a channel monitoring unit, configured to monitor the packet channel timer, and send packet transport channel release information to the source generic access network controller after the packet channel timer expires;
the operation of releasing protection triggered by the channel release protection unit comprises sending a stop operation instruction to the packet channel timer.
13. The terminal of claim 11, further comprising:
a packet channel timer for timing;
a channel monitoring unit, configured to monitor the packet channel timer, and after the packet channel timer expires, determine whether the packet channel timer is restarted, and if so, not trigger a release operation on the packet transmission channel; if not, triggering the releasing operation of the packet transmission channel;
the operation of releasing protection triggered by the channel release protection unit comprises monitoring the operation of the packet channel timer and sending a restart instruction to the packet channel timer after the packet channel timer is overtime.
14. The terminal of claim 11, further comprising:
a packet channel timer for timing;
the first timer is used for timing;
a channel monitoring unit, configured to monitor the packet channel timer, and after the packet channel timer times out, determine whether the first timer times out, and if not, not trigger a release operation on the packet transmission channel; if yes, triggering the releasing operation of the packet transmission channel;
the protection releasing operation triggered by the channel protection releasing unit comprises sending a starting instruction to the first timer.
15. The terminal of claim 11, further comprising:
an information receiving unit for receiving release information for releasing the packet transmission channel;
the release protection operation triggered by the channel release protection unit comprises not executing the release information when receiving the release information for releasing the packet transmission channel, or not executing the release information and returning the release refusal information.
16. A generic access network controller, comprising:
the switching-out processing unit is used for executing the packet transmission channel switching of the terminal from the current general access network cell to the target cell;
the first channel control unit is used for receiving the packet transmission channel release information sent by the terminal; and judging whether the switching-out processing unit executes the switching of the packet transmission channel of the terminal, if so, refusing to release the packet transmission channel.
17. A generic access network controller, comprising:
the cut-in processing unit is used for executing the packet transmission channel switching of the terminal from the source cell to the current general access network cell;
and the second channel control unit is used for triggering the monitoring of the packet transmission channel after the hand-in processing unit establishes the packet transmission channel for the terminal, and releasing the established packet transmission channel when the set monitoring condition is achieved.
18. The generic access network controller according to claim 17, wherein the second channel control element comprises:
the second timer is used for timing;
the first control subunit is configured to send a start instruction to the second timer and monitor the second timer after the hand-in processing unit establishes a packet transmission channel for the terminal; after the second timer is overtime, judging whether the switching of the terminal is successfully completed or not, if not, releasing the established packet transmission channel and informing a source network of the failure of the switching; and judging whether the link resource to the core network is established or not, if so, releasing.
19. The generic access network controller according to claim 17 or 18, wherein the second channel control element comprises:
the registration monitoring unit is used for judging whether the terminal cancels registration when the switching is not successfully completed or not after the switching-in processing unit establishes a packet transmission channel for the terminal;
a second control subunit, configured to release the established packet transmission channel and notify the source network of the failure of the handover when the registration monitoring unit determines that the registration monitoring unit does not determine that the registration monitoring unit determines that the registration monitoring unit; and judging whether the link resource to the core network is established or not, if so, releasing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101071451A CN101299878B (en) | 2007-04-30 | 2007-04-30 | Method for monitoring channel switching process as well as terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101071451A CN101299878B (en) | 2007-04-30 | 2007-04-30 | Method for monitoring channel switching process as well as terminal |
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| CN101299878A true CN101299878A (en) | 2008-11-05 |
| CN101299878B CN101299878B (en) | 2011-09-14 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103797889A (en) * | 2013-09-23 | 2014-05-14 | 华为技术有限公司 | Control method, base station, and user equipment for actively releasing equipment |
| CN105103615A (en) * | 2013-02-06 | 2015-11-25 | 爱立信(中国)通信有限公司 | Enhanced solution for handover |
| CN108370610A (en) * | 2015-11-25 | 2018-08-03 | 特拉网络有限公司 | Interference mitigation in dense grid network |
| WO2018153197A1 (en) * | 2017-02-24 | 2018-08-30 | 北京佰才邦技术有限公司 | Switching method and terminal |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100525534C (en) * | 2006-01-05 | 2009-08-05 | 华为技术有限公司 | Method and system for call hold |
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2007
- 2007-04-30 CN CN2007101071451A patent/CN101299878B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105103615A (en) * | 2013-02-06 | 2015-11-25 | 爱立信(中国)通信有限公司 | Enhanced solution for handover |
| CN105103615B (en) * | 2013-02-06 | 2020-01-17 | 爱立信(中国)通信有限公司 | Enhanced solution for handover |
| CN103797889A (en) * | 2013-09-23 | 2014-05-14 | 华为技术有限公司 | Control method, base station, and user equipment for actively releasing equipment |
| WO2015039340A1 (en) * | 2013-09-23 | 2015-03-26 | 华为技术有限公司 | Control method for active release of device, base station and user equipment |
| CN103797889B (en) * | 2013-09-23 | 2017-10-27 | 华为技术有限公司 | Control method, base station and user equipment that a kind of equipment actively discharges |
| CN108370610A (en) * | 2015-11-25 | 2018-08-03 | 特拉网络有限公司 | Interference mitigation in dense grid network |
| CN108370610B (en) * | 2015-11-25 | 2020-12-25 | 特拉网络有限公司 | Interference mitigation in dense mesh networks |
| WO2018153197A1 (en) * | 2017-02-24 | 2018-08-30 | 北京佰才邦技术有限公司 | Switching method and terminal |
| CN108513327A (en) * | 2017-02-24 | 2018-09-07 | 北京佰才邦技术有限公司 | A kind of switching method and terminal |
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| CN101299878B (en) | 2011-09-14 |
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