CN108696907B - Method for releasing cluster service triggered by terminal switching cell - Google Patents
Method for releasing cluster service triggered by terminal switching cell Download PDFInfo
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- CN108696907B CN108696907B CN201710154396.9A CN201710154396A CN108696907B CN 108696907 B CN108696907 B CN 108696907B CN 201710154396 A CN201710154396 A CN 201710154396A CN 108696907 B CN108696907 B CN 108696907B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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Abstract
The invention provides a method for releasing cluster service triggered by a terminal switching cell, and relates to the technical field of communication. The method comprises the following steps: a mobile management entity MME receives a switching request response message sent by a target base station switched by a terminal according to the switching request message; the MME judges whether cluster bearing exists in a bearing establishment failure list carried in the switching request response message; if so, the MME sends a cluster bearer release indication message to a cluster control function (TCF), so that the TCF releases the ongoing cluster service of the terminal according to the cluster bearer release indication message. By the invention, the user can immediately perceive that the cluster service is released by the network side after the terminal is switched, and the user can restart the cluster service instead of waiting for a long time, thereby obviously improving the user experience.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method for releasing a trunking service triggered by a terminal switching cell.
Background
The broadband trunking communication system is developed for meeting the demand of industry user commanding and dispatching, is a special wireless communication system for specific industry application, provides a commanding and dispatching function for users at a higher speed and a larger bandwidth, and is a multipurpose and high-efficiency wireless communication system. In recent years, broadband cluster systems have wide application markets in the fields of government departments, public safety, emergency communication, electric power, civil aviation, petrochemical industry, military and the like.
The Broadband Trunking Communication system based on the LTE-based Broadband Trunking Communication uses TD-LTE as a core technology, combines the characteristics of TD-LTE such as high speed, large bandwidth, resource sharing in the digital Trunking technology, fast call establishment, and command scheduling, and is a Communication system capable of providing high-speed data transmission.
The trunking terminal may perform inter-base station handover during the service maintaining process, and the description of the handover procedure of the source base station by the B-TrunC is shown in fig. 1, which specifically includes the following steps:
1. when the measurement signal of the terminal in the connected state satisfies the condition, a measurement report message is sent on a DCCH (Dedicated control channel) to notify the source base station, and the measurement report message carries the neighbor cell measurement information and the group ID of the participating group call.
2. After receiving the measurement report message, the source base station judges whether the terminal is switched between cells of different base stations, and informs the cluster core network to initiate a switching process through a switching application message, and carries information such as the group ID and a target TA (tracking area).
3. If the target base station does not have the corresponding service of the cluster group calling, the cluster core network triggers the target base station to establish the service of the cluster group calling.
4. And the cluster core network sends a switching request message to a target base station where the target cell is located.
5. After receiving a handover request message (carrying a Group ID, and if the handover request message is a master user, also carrying a master identity) of the trunking core Network, the target base station prepares a corresponding Resource, and sends a handover request response message (carrying Group-related information, such as a G-RNTI (Group Radio Network Temporary identity) in an RRC (Radio Resource Control) configuration in an RRC (Radio Resource Control) container of the source cell) to the trunking core Network.
6. After receiving the switching request response message, the cluster core network sends a switching command message to the source base station where the source cell is located, and indicates to start switching.
7. And the source base station acquires the relevant information of the switching command through the switching command message and informs the terminal to initiate switching through the RRC connection reconfiguration message, wherein the relevant information of the group, such as G-RNTI and the like, is carried in the RRC connection reconfiguration message.
8. And the terminal replies an RRC connection reconfiguration finishing message to the target base station where the target cell is located in the target cell.
9. The target base station sends a switching notification message to the cluster core network to inform the user that the switching is successful.
If some bearers are not established due to processing errors or other reasons, the target base station carries a bearer establishment failure list in the handover request response message of the fifth step. After the handover procedure is completed, the MME triggers bearer deactivation for the bearers in the list, and does not notify a TCF (trunk Control Function) that the exception occurs, so that the Trunking service continues, but the service channel is released, and the user cannot hear the voice and see the video, which results in poor user experience.
Disclosure of Invention
The invention aims to provide a method for releasing cluster service triggered by a terminal switching cell. The technical problem to be solved by the method is as follows: how to enable a user to perceive that cluster services are released by a network side after a terminal performs cell switching is achieved, and therefore user experience is obviously improved.
In order to achieve the above object, the present invention provides a method for releasing a trunking service triggered by a terminal switching cell. The method comprises the following steps:
a mobile management entity MME receives a switching request response message sent by a target base station switched by a terminal according to the switching request message;
the MME judges whether cluster bearing exists in a bearing establishment failure list carried in the switching request response message;
if so, the MME sends a cluster bearer release indication message to a cluster control function (TCF), so that the TCF releases the ongoing cluster service of the terminal according to the cluster bearer release indication message.
Optionally, before the MME receives a handover request response message sent by a target base station to which the terminal is handed over according to the handover request message, the method further includes:
the MME receives a switching application message sent by a source base station switched by a terminal according to a measurement report message reported by the terminal, wherein the switching application message carries a group identifier of a cluster group call which the terminal is participating in and a target tracking area switched by the terminal;
the MME judges whether the target base station corresponding to the target tracking area has the service of the cluster group call in which the terminal participates;
if not, the MME triggers the target base station to establish the service of the cluster group calling;
the MME sends the switching request message to the target base station.
Optionally, the releasing, by the TCF, the ongoing trunking service of the terminal according to the trunking bearer release indication message includes:
under the condition that the terminal is judged to be performing the single call service according to the terminal identifier carried in the cluster bearer release indication message and the call identifier corresponding to the cluster bearer, the TCF initiates a single call service release process;
and under the condition that the terminal is judged to have the group calling speaking right according to the terminal identification carried in the cluster bearing release indication message and the call identification corresponding to the cluster bearing, the TCF initiates a speaking right release process.
Optionally, after the MME sends a cluster bearer release indication message to the cluster control function TCF, the method further includes:
and the MME sends a switching command message to a source base station switched by the terminal, so that the source base station sends an RRC connection reconfiguration message to the terminal according to the switching command message to inform the terminal of initiating switching.
Optionally, the RRC connection reconfiguration message carries a radio network temporary identifier of the group.
Correspondingly, the invention also provides an MME. The MME comprises:
a receiving unit, configured to receive a handover request response message sent by a target base station for terminal handover according to the handover request message;
a judging unit, configured to judge whether a cluster bearer exists in a bearer establishment failure list carried in the handover request response message;
a sending unit, configured to send a trunking bearer release indication message to a trunking control function TCF when a trunking bearer exists in the bearer establishment failure list, so that the TCF releases an ongoing trunking service of the terminal according to the trunking bearer release indication message.
Optionally, the MME further comprises:
a processing unit, specifically configured to:
receiving a switching application message sent by a source base station switched by a terminal according to a measurement report message reported by the terminal, wherein the switching application message carries a group identifier of a cluster group call in which the terminal is participating and a target tracking area switched by the terminal;
judging whether the target base station corresponding to the target tracking area has the service of the cluster group call in which the terminal participates;
if not, triggering the target base station to establish the service of the cluster group calling;
and sending the switching request message to the target base station.
Optionally, the sending unit is further configured to:
and sending a switching command message to a source base station switched by the terminal, so that the source base station sends an RRC connection reconfiguration message to the terminal according to the switching command message to inform the terminal of initiating switching.
Optionally, the RRC connection reconfiguration message carries a radio network temporary identifier of the group.
According to the technical scheme, a mobile management entity MME receives a switching request response message sent by a target base station switched by a terminal according to a switching request message; judging whether cluster bearing exists in a bearing establishment failure list carried in the switching request response message; if so, the MME sends a cluster bearer release indication message to a cluster control function TCF, so that the TCF releases the ongoing cluster service of the terminal according to the cluster bearer release indication message, and a user can perceive that the cluster service is released by a network side after the terminal performs cell switching, thereby obviously improving user experience.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from these without inventive effort.
Fig. 1 is a schematic diagram of a handover procedure of a source base station by B-TrunC provided in the prior art;
fig. 2 is a flowchart of a method for releasing a trunking service triggered by a terminal switching cell according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for releasing a trunking service triggered by a terminal switching cell according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of an MME according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an MME according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Some words mentioned in the examples of the present invention are exemplified below.
The terminal mentioned in the embodiment of the present invention is a used device such as a mobile terminal or a Personal Computer (PC). Such as a smart phone, a Personal Digital Assistant (PDA), a tablet computer, a laptop computer, a car computer (carputer), a handheld game console, smart glasses, a smart watch, a wearable device, a virtual display device or a display enhancement device (e.g., Google Glass, Oculus Rift, Hololens, Gear VR), etc.
Fig. 2 is a flowchart of a method for releasing a cluster service triggered by a terminal switching cell according to an embodiment of the present invention. As shown in fig. 2, a method for releasing a cluster service triggered by a terminal switching cell according to an embodiment of the present invention includes:
in step S101, the mobility management entity MME receives a handover request response message sent by the target base station for terminal handover according to the handover request message.
Specifically, prior to this step, the method further comprises: the method comprises the steps that the MME (Mobile Management Entity) receives a switching application message sent by a source base station switched by a terminal according to a measurement report message reported by the terminal, wherein the switching application message carries a group identifier of a cluster group call in which the terminal participates and a target tracking area switched by the terminal; the MME judges whether the target base station corresponding to the target tracking area has the service of the cluster group call in which the terminal participates; if not, the MME triggers the target base station to establish the service of the cluster group calling; the MME sends the switching request message to the target base station.
The measurement report message carries neighbor measurement information and a group ID of a trunking group call in which the terminal is participating, the handover request message carries the group ID of the trunking group call, and if the terminal is a master talk user, the handover request message also needs to carry a master talk identifier.
Next, in step S102, the MME determines whether a trunking bearer exists in the bearer establishment failure list carried in the handover request response message.
The handover request response message carries an RRC container for the source cell, an E-RABs (E-UTRAN radio Access Bearer) permission list and an E-RABs establishment failure list.
Finally, in step S103, if yes, the MME sends a cluster bearer release indication message to a cluster control function TCF, so that the TCF releases the ongoing cluster service of the terminal according to the cluster bearer release indication message.
Wherein, the TCF releasing the ongoing trunking service of the terminal according to the trunking bearer release indication message includes: under the condition that the terminal is judged to be performing the single call service according to the terminal identifier carried in the cluster bearer release indication message and the call identifier corresponding to the cluster bearer, the TCF initiates a single call service release process; and under the condition that the terminal is judged to have the group calling speaking right according to the terminal identification carried in the cluster bearing release indication message and the call identification corresponding to the cluster bearing, the TCF initiates a speaking right release process.
Specifically, after this step, the method further comprises: and the MME sends a switching command message to a source base station switched by the terminal, so that the source base station sends an RRC connection reconfiguration message to the terminal according to the switching command message to inform the terminal of initiating switching. And the RRC connection reconfiguration message carries the radio network temporary identifier of the group.
In this embodiment, a mobility management entity MME receives a handover request response message sent by a target base station for terminal handover according to a handover request message; judging whether cluster bearing exists in a bearing establishment failure list carried in the switching request response message; if so, the MME sends a cluster bearer release indication message to a cluster control function TCF, so that the TCF releases the ongoing cluster service of the terminal according to the cluster bearer release indication message, and a user can perceive that the cluster service is released by a network side after the terminal performs cell switching, thereby obviously improving user experience.
Fig. 3 is a flowchart of a method for releasing cluster service triggered by a terminal switching cell according to another embodiment of the present invention. As shown in fig. 3, this embodiment provides a novel method for releasing a trunking service triggered by a terminal switching cell, where a specific flow is described as follows: when the measurement signal of the terminal in the connection state meets the condition, a measurement report message is sent on a DCCH to inform a source base station, and the measurement report message carries the neighbor cell measurement information and the group ID of the cluster group call which is participating in. After receiving the measurement report message, the source base station judges whether the terminal is switched between cells of different base stations, and informs the cluster core network to initiate a switching process through a switching application message, and carries information such as the group ID and a target TA (Tracking Area). If the target base station does not have the corresponding service of the cluster group calling, the MME triggers the target base station to establish the service of the cluster group calling. And the MME sends a switching request message to a target base station where the target cell is located. After receiving a switching request message (carrying a group ID, and if the user is a talkback user, carrying a talkback identifier) of the MME, the target base station prepares corresponding resources and sends a switching request response message to the MME, wherein the switching request response message comprises an E-RABs permission list and an E-RABs establishment failure list. If the bearer establishment failure list carried in the handover request response message indicates that the cluster bearer is not successfully established, the MME needs to send a cluster bearer release indication message to the TCF, where the message carries the terminal identifier and the call identifier corresponding to the bearer. And the TCF judges that the terminal is carrying out the single call service according to the terminal identification and the call identification in the message, initiates single call release, and initiates a speaking right release process if the terminal is a speaking right party of the group call. And the MME sends a switching command message to the source base station where the source cell is located to indicate to start switching. And the source base station acquires the relevant information of the switching command through the switching command message and informs the terminal to initiate switching through the RRC connection reconfiguration message, wherein the relevant information of the group, such as G-RNTI and the like, is carried in the RRC connection reconfiguration message. And the terminal replies an RRC connection reconfiguration finishing message to the target base station where the target cell is located in the target cell. The target base station sends a switching notification message to the cluster core network to inform the user that the switching is successful.
The cluster bearer release indication message between the TCF and the MME is specifically described as follows: the message is sent to the TCF by the MME, and informs the TCF that the cluster service bearer corresponding to the call identifier is released by the base station side.
Table 1 cluster bearer release indication message content
Compared with the prior art, the embodiment has the following advantages:
1. after receiving the switching request response message, the MME judges that the cluster bearer of the terminal is not successfully established in the target base station, and then sends a cluster bearer release indication message to the TCF to indicate that the audio and video bearer of the terminal is released by the target base station.
2. The TCF receives the cluster bearing release instruction message, judges that the user is carrying out single call according to the user identification and the call identification, releases the single call service, and forcibly releases the speaking right if the user is in group calling. After switching, the user can immediately perceive that the cluster service is released by the network side, and the user can restart the service instead of waiting for a long time, so that the user experience can be obviously improved.
For simplicity of explanation, the method embodiments are described as a series of acts or combinations, but those skilled in the art will appreciate that the embodiments are not limited by the order of acts described, as some steps may occur in other orders or concurrently with other steps in accordance with the embodiments of the invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Fig. 4 is a schematic structural diagram of an MME according to an embodiment of the present invention. As shown in fig. 4, an MME according to an embodiment of the present invention includes a receiving unit 202, a determining unit 203, and a sending unit 204, where:
a receiving unit 202, configured to receive a handover request response message sent by a target base station for terminal handover according to the handover request message;
a determining unit 203, configured to determine whether a cluster bearer exists in a bearer establishment failure list carried in the handover request response message;
a sending unit 204, configured to send a cluster bearer release indication message to a cluster control function TCF when a cluster bearer exists in the bearer establishment failure list, so that the TCF releases an ongoing cluster service of the terminal according to the cluster bearer release indication message.
The MME provided in this embodiment is suitable for the method for releasing the cluster service triggered by the terminal switching cell corresponding to the above embodiment, and details are not described here again.
In this embodiment, a receiving unit 202 receives a handover request response message sent by a target base station for terminal handover according to a handover request message; the judging unit 203 judges whether a cluster bearer exists in a bearer establishment failure list carried in the handover request response message; the sending unit 204 sends a cluster bearer release indication message to the TCF under the condition that the cluster bearer exists in the bearer establishment failure list, so that the TCF releases the ongoing cluster service of the terminal according to the cluster bearer release indication message, and a user can perceive that the cluster service is released by a network side after the terminal performs cell handover, thereby significantly improving user experience.
In an optional embodiment of the present invention, the MME further includes: the processing unit 201 is specifically configured to:
receiving a switching application message sent by a source base station switched by a terminal according to a measurement report message reported by the terminal, wherein the switching application message carries a group identifier of a cluster group call in which the terminal is participating and a target tracking area switched by the terminal;
judging whether the target base station corresponding to the target tracking area has the service of the cluster group call in which the terminal participates;
if not, triggering the target base station to establish the service of the cluster group calling;
and sending the switching request message to the target base station.
In an optional embodiment of the present invention, the sending unit 204 is further configured to:
and sending a switching command message to a source base station switched by the terminal, so that the source base station sends an RRC connection reconfiguration message to the terminal according to the switching command message to inform the terminal of initiating switching.
In an optional embodiment of the present invention, the RRC connection reconfiguration message carries a radio network temporary identifier of a group.
Fig. 5 is a schematic structural diagram of an MME according to another embodiment of the present invention. As shown in fig. 5, the MME includes: a processor (processor)301, a memory (memory)302, a communication Interface (Communications Interface)303, and a communication bus 304;
the processor 301, the memory 302 and the communication interface 303 complete mutual communication through the communication bus 304;
the communication interface 303 is used for information transmission between the MME and a base station or a TCF;
the processor 301 is configured to call program instructions in the memory 302 to perform the methods provided by the above-mentioned method embodiments, including: a mobile management entity MME receives a switching request response message sent by a target base station switched by a terminal according to the switching request message; the MME judges whether cluster bearing exists in a bearing establishment failure list carried in the switching request response message; if so, the MME sends a cluster bearer release indication message to a cluster control function (TCF), so that the TCF releases the ongoing cluster service of the terminal according to the cluster bearer release indication message.
The present embodiment discloses a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the method provided by the above-mentioned method embodiments, for example, comprising: a mobile management entity MME receives a switching request response message sent by a target base station switched by a terminal according to the switching request message; the MME judges whether cluster bearing exists in a bearing establishment failure list carried in the switching request response message; if so, the MME sends a cluster bearer release indication message to a cluster control function (TCF), so that the TCF releases the ongoing cluster service of the terminal according to the cluster bearer release indication message.
The present embodiments provide a non-transitory computer-readable storage medium storing computer instructions that cause the computer to perform the methods provided by the above method embodiments, for example, including: a mobile management entity MME receives a switching request response message sent by a target base station switched by a terminal according to the switching request message; the MME judges whether cluster bearing exists in a bearing establishment failure list carried in the switching request response message; if so, the MME sends a cluster bearer release indication message to a cluster control function (TCF), so that the TCF releases the ongoing cluster service of the terminal according to the cluster bearer release indication message.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The above-described embodiments of the MME and the like are merely illustrative, where the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may also be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention, and are not limited thereto; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A method for releasing cluster service triggered by a terminal switching cell is characterized in that the method comprises the following steps:
a mobile management entity MME receives a switching request response message sent by a target base station switched by a terminal according to the switching request message;
the MME judges whether cluster bearing exists in a bearing establishment failure list carried in the switching request response message;
if so, the MME sends a cluster bearer release indication message to a cluster control function (TCF), so that the TCF releases the ongoing cluster service of the terminal according to the cluster bearer release indication message.
2. The method for releasing trunking service triggered by terminal switching cell according to claim 1, wherein before the MME receives a handover request response message sent by a target base station for terminal switching according to the handover request message, the method further comprises:
the MME receives a switching request message sent by a source base station switched by a terminal according to a measurement report message reported by the terminal, wherein the switching request message carries a group identifier of a cluster group call which the terminal is participating in and a target tracking area switched by the terminal;
the MME judges whether the target base station corresponding to the target tracking area has the service of the cluster group call in which the terminal participates;
if not, the MME triggers the target base station to establish the service of the cluster group calling;
the MME sends the switching request message to the target base station.
3. The method for releasing trunking service triggered by terminal switching cell according to claim 1, wherein the TCF releases the trunking service being performed by the terminal according to the trunking bearer release indication message, comprising:
under the condition that the terminal is judged to be performing the single call service according to the terminal identifier carried in the cluster bearer release indication message and the call identifier corresponding to the cluster bearer, the TCF initiates a single call service release process;
and under the condition that the terminal is judged to have the group calling speaking right according to the terminal identification carried in the cluster bearing release indication message and the call identification corresponding to the cluster bearing, the TCF initiates a speaking right release process.
4. The method for releasing cluster service triggered by terminal switching cell according to claim 1, wherein after the MME sends a cluster bearer release indication message to a cluster control function TCF, the method further comprises:
and the MME sends a switching command message to a source base station switched by the terminal, so that the source base station sends an RRC connection reconfiguration message to the terminal according to the switching command message to inform the terminal of initiating switching.
5. The method for releasing trunking service triggered by terminal switching cell according to claim 4, wherein the RRC connection reconfiguration message carries a radio network temporary identifier of a group.
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| CN112333790B (en) * | 2020-11-23 | 2022-05-03 | 武汉信科移动通信技术有限公司 | Cross-network switching method and system for cluster terminal |
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| CN103828439A (en) * | 2012-07-30 | 2014-05-28 | 华为技术有限公司 | Switch method between wireless access technologies, corresponding device, and communication system |
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