WO2014047950A1 - 一种拥塞控制的方法、设备及系统 - Google Patents

一种拥塞控制的方法、设备及系统 Download PDF

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Publication number
WO2014047950A1
WO2014047950A1 PCT/CN2012/082503 CN2012082503W WO2014047950A1 WO 2014047950 A1 WO2014047950 A1 WO 2014047950A1 CN 2012082503 W CN2012082503 W CN 2012082503W WO 2014047950 A1 WO2014047950 A1 WO 2014047950A1
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WIPO (PCT)
Prior art keywords
priority
indication information
request
congestion
network element
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Application number
PCT/CN2012/082503
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English (en)
French (fr)
Inventor
舒林
马德曼•弗兰克
张万强
朱奋勤
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201811203632.2A priority Critical patent/CN109219082B/zh
Priority to PCT/CN2012/082503 priority patent/WO2014047950A1/zh
Priority to CN201280003236.XA priority patent/CN104054377B/zh
Priority to CN201811202716.4A priority patent/CN109309946B/zh
Publication of WO2014047950A1 publication Critical patent/WO2014047950A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/02Access restriction performed under specific conditions
    • H04W48/06Access restriction performed under specific conditions based on traffic conditions

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, device, and system for congestion control. Background technique
  • Machine Type Communication (MTC) applications usually use a large number of User Equipments (UEs).
  • UEs User Equipments
  • the network (which may be a mobility management network element and/or a gateway device) may be congested and overloaded. To ensure normal network operation, congestion or overload control is required.
  • the UE accesses the network.
  • the network can reject the access request of the UE.
  • the current method is as follows: When the network rejects the access request of the UE, a time-instruction information (back-off timer) may be saved, and the network rejects the access request from the UE within the time range indicated by the time indication information.
  • the time indication information is provided to the UE, and the UE does not access the network within the time range indicated by the time indication information.
  • UEs used for MTC applications mainly transmit service data when accessing the network, and have more tolerance in terms of access delay. Therefore, such UEs can be configured with low priority and configured.
  • the access request message includes low-priority indication information. Therefore, the network can recognize that the access request is low-priority. If the network performs congestion or overload control, congestion or overload control is first performed on low priority access requests before congestion or overload control of normal priority access requests.
  • the network when the network only supports congestion or overload control for low-priority access requests, UEs that support dual-priority (both low-priority and normal-priority) send low-priority access requests to the network.
  • the network rejects the low priority access request of the UE and saves a time indication information; in the time range indicated by the time indication information, the UE supporting the dual priority may send a normal priority access request to the network. At this time, the network will reject the normal priority access request of the UE.
  • Embodiments of the present invention provide a method, device, and system for congestion control, which can solve a network rejection of a UE when congestion or overload control is performed on a low priority access request of a UE.
  • the embodiment of the present invention provides a method for congestion control, where the method includes: a mobile management network element receives a first request sent by a user equipment (UE), where the first request includes a first priority. Instructing information, where the first priority indication information is used to identify a priority of the first request;
  • UE user equipment
  • the first request is for congestion or overload control.
  • first possible implementation manner of the first aspect when the receiving moment is within a time range indicated by the time indication information, and the priority indicated by the first priority indication information is lower than or equal to When the second priority indicates the priority indicated by the information, it is determined that the first request is subjected to congestion or overload control.
  • the first priority indication information when the receiving moment is within a time range indicated by the time indication information, and the first priority indication information indicates a priority higher than the first When the priority indicates the priority indicated by the information, determining to perform congestion or overload control on the first request; or
  • the first priority indication information indicates a priority higher than the first
  • the method further includes:
  • the priority indication information indicates the same priority.
  • the method further includes: the mobility management network element initially setting the time indication information and the second priority indication information.
  • the method may be: initial setting the time indication information and the second priority after rejecting the second request of the UE
  • the level indication information is such that the priority indicated by the second priority indication information is the same as the priority of the second request.
  • the first request is a mobility management request; or, the first request is a session management request, where
  • the time indication information is time indication information corresponding to an access point name (APN) selected by the UE and the UE.
  • APN access point name
  • the time indication information corresponding to the UE, and the second priority indication information are It is saved in the mobility management network element.
  • the embodiment of the present invention provides a method for congestion control, where the method further includes: when a low-priority access request of the user equipment UE is subjected to congestion or overload control, the mobility management network element receives the a first request of a normal priority; according to the first request, the mobility management network element sends a session management message to the gateway device;
  • the session management message includes identifier information for indicating that the UE is allocated a bearer when the low priority access request of the UE is subjected to congestion or overload control; so that the gateway device is allocated for the UE.
  • the bearer's context is stored to indicate that the bearer is identification information of a bearer allocated when the low priority access request of the UE is subjected to congestion or overload control.
  • storing, in the generated charging data record of the bearer, that the access request indicating that the bearer is a low priority of the UE is congested or overloaded The identification information of the bearer assigned during control.
  • the mobility management network element receives a first access request that is sent by the UE and has a normal priority
  • the method includes: notifying, by the mobility management network element, a radio access network to the UE After the low priority access request is used to perform the extended access control EAB, the mobility management network element receives the first access request sent by the UE.
  • the moment of receiving the first request is within a time range indicated by the saved time indication information corresponding to the UE, and the first request of the UE is The priority is higher than the priority indicated by the priority indication information corresponding to the time indication message.
  • an embodiment of the present invention provides a method for congestion control, where the method includes: the user equipment UE determines that a low priority access request is subjected to congestion or overload control; and the UE sends a first request to the mobility management network element. And the first request includes indication information that the low priority access request requests access when the congestion or overload control is received; so that the mobility management network element and the gateway device allocate a bearer for the UE, and The identifier of the bearer allocated when the access request of the low priority of the UE is subjected to congestion or overload control is saved in the context of the bearer.
  • the first request further includes: priority indication information, where the priority indication information is used to identify a priority of the first request, where The priority of the first request is the normal priority.
  • the determining that the low priority access request is subjected to congestion or overload control includes:
  • the low priority access request sent by the mobile management network element is rejected, and the mobility management network element carries time indication information for the UE in the access request response message, and the UE indicates according to the time indication.
  • the low-priority Radio Resource Control (RRC) connection request message is sent by the wireless communication network, and the wireless communication network carries time indication information for the UE in the RRC connection response message, where the UE is configured according to The time indication information starts a timer, and the UE cannot send the low priority RRC connection when the timer is running. Receive the request.
  • RRC Radio Resource Control
  • an embodiment of the present invention provides a method for congestion control, where the method includes: a gateway device receiving a session management message sent by a mobility management network element, where the session management message includes a low priority for indicating that the UE
  • the UE is allocated bearer identification information; the bearer is allocated to the UE, and the bearer is saved in the context of the bearer to indicate that the bearer is a low priority of the UE.
  • the session management response message carries indication information that the bearer has been allocated to the UE.
  • the method further includes: saving, in the generated charging data record of the bearer, indicating that the bearer is a low priority access of the UE The identification information of the bearer allocated to the UE when the request is subjected to congestion or overload control.
  • an embodiment of the present invention provides a mobility management network element, where the mobility management network element includes:
  • a receiving unit configured to receive a first request sent by the user equipment UE, where the first request includes first priority indication information, where the first priority indication information is used to identify a priority of the first request ;
  • a processing unit configured to receive, according to the receiving unit, the receiving moment of the first request and the first priority indication information, and the time indication information corresponding to the UE and the second corresponding to the time indication information
  • the priority indication information determines whether congestion or overload control is performed on the first request.
  • the processing unit is specifically configured to: when the receiving unit receives the receiving time of the first request, in a time range indicated by the time indication signal, And determining, when the priority indicated by the first priority indication information is lower than or equal to the priority indicated by the second priority indication information; determining to perform congestion or overload control on the first request.
  • the processing unit is specifically configured to be used When the receiving unit receives the first request, the receiving time is within the time range indicated by the time indication signal, and the first priority indicating information indicates a higher priority than the second priority Determining the priority indicated by the information; determining to perform congestion or overload control on the first request; or, when the receiving unit receives the reception time of the first request, in a time range indicated by the time indication information When it is outside, it is determined that congestion or overload control is performed on the first request.
  • the processing unit is specifically configured to: when the receiving unit receives the first request, the receiving time is indicated by the time indication information Within the time range, and the priority indicated by the first priority indication information is higher than the priority indicated by the second priority indication information; determining that congestion or overload control is not performed on the first request; or
  • the processing unit is further configured to modify the time indication information to newly designated time indication information, and modify the second priority
  • the level indication information is such that the priority indicated by the second priority indication information is the same as the priority indicated by the first priority indication information.
  • the processing unit is further configured to initially set the time indication information and the second priority indication information.
  • the processing unit is configured to: after the second request of the UE is rejected, initially set the time indication information and The second priority indication information is such that the priority indicated by the second priority indication information is the same as the priority of the second request.
  • the mobile management network element further includes:
  • a storage unit configured to store the time indication information corresponding to the UE and the second priority indication information.
  • an embodiment of the present invention provides a mobility management network element, where the mobility management network element includes: a receiving unit, configured to receive, when the low-priority access request of the user equipment UE is subjected to congestion or overload control, a first request with a normal priority sent by the UE, and a generating unit, configured to receive according to the receiving unit
  • the first request generates a session management message, where the session management message includes identifier information for indicating that the UE is allocated a bearer when the low priority access request of the UE is subjected to congestion or overload control; Transmitting, to the gateway device, the session management message generated by the generating unit, so that the gateway device saves in a context of a bearer allocated for the UE, to indicate that the bearer is in the UE
  • the low priority access request is subject to the identification information of the bearer allocated when congestion or overload control.
  • the mobile management network element further includes: a processing unit, configured to save, in the generated charging data record of the bearer, that the bearer is in the The identification information of the UE when the low priority access request of the UE is subjected to congestion or overload control.
  • the receiving unit is specifically configured to: when the low priority access request of the UE is congested or overloaded In the control, the mobility management network element notifies the radio access network to perform the extended access control EAB on the low priority access request of the UE, and receives the first request sent by the UE.
  • the receiving unit is specifically configured to: when the low priority access request of the UE is subjected to congestion or overload control, the time of receiving the first request is saved Corresponding to the time range indicated by the time indication information of the UE, and the priority of the first request of the UE is higher than the priority indicated by the priority indication information corresponding to the time indication information.
  • an embodiment of the present invention provides a UE, where the UE includes: a processing unit, configured to determine that a low priority access request is subjected to congestion or overload control; and a generating unit, configured to: when the processing unit determines the When the low-priority access request is subjected to congestion or overload control, the first request is generated, where the first request includes indication information that the low-priority access request is requested to be accessed when the congestion request is subjected to congestion or overload control;
  • the network element is configured to enable the mobility management network element and the gateway device to allocate a bearer for the UE, and save, in the context of the bearer, an access request for identifying that the bearer is a low priority of the UE, Identification information of the bearer allocated during congestion or overload control.
  • the first request generated by the generating unit further includes priority indication information, where the priority indication information is used to identify a priority of the first request, where The priority of the first request is a normal priority.
  • the processing unit is specifically configured to be used according to the sent low priority access request
  • the mobility management network element rejects, the mobility management network element carries time indication information for the UE in the access request response message, and the UE starts a timer according to the time indication information, and cannot send during the running of the timer.
  • the low priority access request or
  • the sent low-priority RRC connection request message is rejected by the wireless communication network, the wireless communication network carries the time indication information for the UE in the RRC connection response message, and the UE starts the timer according to the time indication information, The UE cannot send the low priority RRC connection request when the timer is running;
  • the embodiment of the present invention provides a gateway device, where the gateway device includes: a receiving unit, configured to receive a session management message sent by a mobility management network element, where the session management message includes The identifier information of the bearer allocated to the UE when the low priority access request is under congestion or overload control;
  • a processing unit configured to allocate a bearer to the UE according to the session management message received by the receiving unit, and save, in a context of the bearer, a low priority connection that is used to indicate that the bearer is the UE And generating, by the processing unit, the session management response message according to the processing result of the processing unit, where the session management response message carries the allocation to the UE Carrying indication information;
  • a sending unit configured to send the first response message generated by the generating unit to the The mobile management network element.
  • the processing unit is further configured to save, in the generated charging data record of the bearer, a low priority for indicating that the bearer is the UE The identification information of the bearer allocated to the UE when the access request is under congestion or overload control.
  • the ninth aspect, the embodiment of the present invention provides a mobility management network element, where the mobility management network element includes:
  • a receiving module configured to receive a first request sent by the user equipment, where the first request includes first priority indication information, where the first priority indication information is used to identify a priority of the first request
  • a processor configured to receive, according to the receiving module, the receiving moment of the first request and the first priority indication information, and time indication information corresponding to the UE and corresponding to the time indication information The second priority indication information determines whether congestion or overload control is performed on the first request.
  • the processor is specifically configured to: when the receiving module receives the first request, the receiving time is within the indicated time range And determining, when the priority indicated by the first priority indication information is lower than or equal to the priority indicated by the second priority indication information; determining to perform congestion or overload control on the first request.
  • the processor is specifically configured to: when the receiving module receives the first request, the receiving moment is indicated by the time indication information Within the time range, and when the first priority indication information indicates a priority higher than the priority indicated by the second priority indication information; determining to perform congestion or overload control on the first request; or
  • the processor is specifically configured to: when the receiving module receives the first request, the receiving moment is indicated by the time indication information Within the time range, and the first priority indication information indicates a priority higher than the priority indicated by the second priority indication information; determining the first request No congestion or overload control is performed; or, when the receiving module receives the first request, the receiving moment is outside the time range indicated by the time indication information, determining that the first request is not congested Or overload control.
  • the processor is further configured to modify the time indication information to newly designated time indication information, and modify the second The priority indication information is such that the priority indicated by the second priority indication information is the same as the priority indicated by the first priority indication information.
  • the processor is further configured to initially set the time indication information and the second priority indication information.
  • the processor is configured to initially set the time indication information and after rejecting the second request of the UE The second priority indication information is such that the priority indicated by the second priority indication information is the same as the priority of the second request.
  • the mobile management network element further includes:
  • a register configured to store the time indication information corresponding to the UE and the second priority indication information.
  • the tenth aspect of the present invention provides a mobility management network element, where the mobility management network element includes:
  • a receiving module configured to: when the low-priority access request of the user equipment UE is subjected to congestion or overload control, receive a first access request that is sent by the UE and has a normal priority;
  • a processor configured to generate a session management message according to the first request received by the receiving module, where the session management message includes, when the low priority access request of the UE is subjected to congestion or overload control,
  • the UE allocates the identifier information of the bearer
  • the sending module is configured to send the session management message generated by the processor to the gateway device, so that the gateway device saves in a context of a bearer allocated to the UE.
  • the indication that the bearer is the bearer identification information that is allocated when the low priority access request of the UE is subjected to congestion or overload control.
  • the processor is further configured to save, in the generated charging data record of the bearer, a low priority indicating that the bearer is in the UE The identification information of the bearer allocated when the access request is subjected to congestion or overload control.
  • the receiving module is specifically configured to: when a low priority access request of the user equipment UE is congested or overloaded In the control, the mobility management network element notifies the radio access network to perform the extended access control EAB on the low priority access request of the UE, and receives the first request sent by the UE.
  • the receiving module is specifically configured to: when the low priority access request of the UE is subjected to congestion or overload control, the time of receiving the first request is saved. Corresponding to the time range indicated by the time indication information of the UE, and the priority of the first request of the UE is higher than the priority indicated by the priority indication information corresponding to the time indication information.
  • an embodiment of the present invention provides a UE, where the UE includes: a processor, configured to determine that a low-priority access request is subjected to congestion or overload control, and generate a first request, where the first request is And indicating, by the sending module, the first request generated by the processor to send the first request generated by the processor to the mobility management network element, to enable the mobile
  • the management network element and the gateway device allocate a bearer for the user equipment UE, and store, in the context of the bearer, a bearer allocated to identify that the low priority access request of the bearer is the congestion or overload control of the UE. Identification information.
  • the first request generated by the processor further includes: priority indication information, where the priority indication information is used to identify a priority of the first request The priority of the first request is a normal priority.
  • the processor is specifically configured to be configured according to the low priority access request sent
  • the mobility management network element rejects, the mobility management network element carries time indication information for the UE in the access request response message, and the UE starts a timer according to the time indication information, during the running of the timer, The low priority access request cannot be sent; or Receiving, from the wireless communication network, indication information that the EAB is enabled for the low priority access request; or
  • the sent low-priority RRC connection request message is rejected by the wireless communication network, the wireless communication network carries the time indication information for the UE in the RRC connection response message, and the UE starts the timer according to the time indication information,
  • the UE may not send the low priority RRC connection request when the timer is running; determine that the low priority access request is subjected to congestion or overload control, and generate a first request, where the first request includes low
  • the indication that the priority access request is requested to be accessed when it is under congestion or overload control.
  • the embodiment of the present invention provides a gateway device, where the gateway device includes: a receiving module, configured to receive a session management message sent by a mobility management network element, where the session management message includes The UE assigns the identifier information of the bearer to the UE when the low-priority access request of the UE is subjected to congestion or overload control; the processor is configured to allocate the bearer to the UE according to the session management message received by the receiving module And storing, in the context of the bearer, identifier information indicating that the bearer is allocated when the low priority access request of the UE is subjected to congestion or overload control; and generating a session management response message, The session management response message carries the indication information that the bearer has been allocated to the UE, and the sending module is configured to send the first response message generated by the processor to the mobility management network element.
  • the processor is further configured to save, in the generated charging data record of the bearer, a low priority for indicating that the bearer is the UE
  • the identification information of the bearer allocated to the UE when the access request of the level is under congestion or overload control.
  • the embodiment of the present invention provides a system for congestion control, the system comprising: the mobility management network element of any one of the fifth aspect or the fifth aspect, or the ninth or ninth aspect A possible implementation of a mobility management network element.
  • the embodiment of the present invention provides a system for congestion control, where the system includes: the mobility management network element, the seventh party of any possible implementation manner of the sixth aspect or the sixth aspect Or a gateway device of any of the possible implementation manners of the UE, the eighth aspect, or the eighth aspect of the seventh aspect; or
  • An embodiment of the present invention provides a method, a device, and a system for congestion control, where a mobility management network element according to a first request of the UE, and a time indication information corresponding to the UE and a second corresponding to the time indication information
  • the priority indication information when a certain condition is met, may determine whether to perform congestion or overload control on the request of the UE according to the network condition; otherwise, reject the request of the UE. Therefore, when the network only performs congestion or overload control on the low priority access request, the mobility management network element rejects the problem of supporting the normal access request of the dual priority UE.
  • the mobility management network element determines that the UE initiates a normal priority access request when the low priority access request is subjected to congestion or overload control
  • the session management message is sent to the gateway device, so that the gateway device is the UE.
  • the access request allocates a bearer.
  • FIG. 1 is a schematic flowchart of a method for congestion control according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for congestion control according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of another method for congestion control according to an embodiment of the present invention
  • FIG. 4 is a schematic flowchart of a method for congestion control according to another embodiment of the present invention
  • FIG. 5 is a schematic block diagram of a structure of a mobility management network element according to an embodiment of the present invention
  • FIG. 6 is a schematic block diagram 2 of a structure of a mobility management network element according to an embodiment of the present invention
  • FIG. 7 is a schematic block diagram showing the structure of a mobility management network element according to another embodiment of the present invention
  • FIG. 8 is a schematic block diagram of a structure of a user equipment according to another embodiment of the present invention
  • FIG. 9 is a schematic block diagram 2 of a user equipment according to another embodiment of the present invention
  • FIG. 11 is a schematic block diagram of a structure of a mobile management network element according to an embodiment of the present invention
  • FIG. 12 is a schematic structural diagram of a mobile management network element according to an embodiment of the present invention
  • FIG. 13 is a schematic block diagram showing the structure of a mobility management network element according to another embodiment of the present invention.
  • FIG. 14 is a schematic block diagram of a structure of a user equipment according to another embodiment of the present invention
  • FIG. 15 is a schematic structural block diagram of a gateway device according to another embodiment of the present invention.
  • the mobile management network element receives the first request sent by the UE, where the first request includes the first priority indication information, where the first priority indication information is used to identify the priority of the first request.
  • the UE may be configured to support dual priority, that is, support low-priority and normal-priority network access.
  • the UE may also be configured to support only low priority access network access.
  • the first request sent by the UE is performed by using the first request message, and when the mobile management network element receives the first request message, the first request message includes the first When the priority indicates information, the mobility management network element pair and the first request message The corresponding first request is processed.
  • the first priority indication information may be encapsulated in a Device Properties Information Element, where the device attribute information is included in the first request message.
  • the device attribute information is included in the first request message.
  • MS Mobile station configured as non-access layer signaling low priority
  • MS is configured for NAS signalling low priority
  • the priority of the first request is low priority; when the corresponding identifier bit in the device attribute cell is set to 'the mobile station is not configured as the non-access stratum signaling low priority, ("MS is not configured for NAS signalling
  • the priority of the first request of the UE is a normal priority when the first priority indication information does not include the device attribute information, and the priority of the first request of the UE is normal.
  • the first request of the UE is a normal priority, or the first priority includes the device attribute information element, but the identifier of the priority of the request does not exist in the device attribute information element.
  • the corresponding first request message is a mobility management request message, and when it is a mobility management request message, it may be: an attach request (Attach Request) message, a routing area update request ( Routing Area Update Request) Message, Tracking Area Update Request message, Service Request message, Extened Service Request message, etc.
  • the mobility management network element receives, according to the first request, the first time, the first time priority indication information, and the time indication information corresponding to the UE, and the second priority corresponding to the time indication information.
  • the level indication information determines whether congestion or overload control is performed on the first request.
  • the mobility management network element may store time indication information corresponding to the UE and the second priority indication corresponding to the time indication information in a context of the UE in which it is saved or in a table for saving time indication information.
  • Information may be stored in any memory.
  • the mobility management network element may perform the congestion or overload control on the UE and reject the request of the UE before the UE sends the first request, where the mobility management network element may be in the context of the UE that it saves.
  • the time indication information corresponding to the UE and the second priority indication information corresponding to the time indication information are saved, where the time indication information is a duration or a time. Specifically, when the time indication information is a duration, the time indication information may be a timer.
  • the mobility management network element may further save the time indication information and the second priority indication information corresponding to the time indication information in a table for saving time indication information.
  • the type of time indication information may be referred to as mobility management time indication information.
  • the mobility management network element performs congestion or overload control on the UE before the UE sends the first request, and includes the following two situations.
  • the mobility management network element when the mobility management network element does not save the time indication information corresponding to the UE, the mobility management network element receives the first request of the UE, and the mobility management network element determines to congest the mobile management request of the UE or In the overload control, the mobility management network element may save the time indication information corresponding to the UE and the second priority indication information corresponding to the time indication information in the context of the UE that is saved, where the time indication information corresponds to a second priority indication signal, the priority of the indication being a priority of the first request of the UE;
  • the mobility management network element determines to perform congestion or overload control on the first request of the low priority or the normal priority according to the current network congestion or overload condition, and the mobility management network element saves the corresponding in the context of the UE that it saves.
  • the time indication information of the UE and the priority indication information corresponding to the time indication information where the mobility management network element determines to perform congestion or overload control on the first request of the low priority, where the time indication information corresponds to The priority indicated by the second priority indication information is a low priority; if the mobility management network element determines to perform congestion or overload control on the mobile management request of the normal priority, the second priority indication information corresponding to the time indication information indicates the priority The level is normal priority.
  • the mobility management network element when the mobility management network element performs congestion or overload control on the access request of the UE, the mobility management network element rejects the access request of the UE or discards the access request of the UE.
  • the mobility management network element does not perform congestion or overload control on the access request of the UE, the mobility management network element accepts the access request example of the UE, and the mobility management network element performs congestion or overload on the request of the UE.
  • the time indication information is specified by the mobility management network element. Specifically, the mobility management network element specifies a time range or a time identifier indicated by the time indication information.
  • the second priority indication information indicates a normal priority.
  • the identifier corresponding to the second priority indication information may be set to “the mobile station is not configured as the non-access layer signaling low priority”; or
  • the second priority indication information indicates a low priority.
  • the identifier bit that can be corresponding to the second priority indication information is set to “the mobile station is configured as a non-access stratum signaling low priority”.
  • the second priority indication information corresponding to the time indication information may be used to indicate that the time indication information is because the mobility management network element gives the second priority indication information, and the identified priority Level requests are saved for congestion or overload control. Therefore, the second priority indication information may identify the time letter and the reason for being saved.
  • the identifier may be used to identify the second priority indication information. Specifically, the identifier may be set to “the mobile station is configured as a non-access layer signaling low priority”, indicating the time indication. The information is saved due to congestion or overload control of the low priority request; the flag can also be set to "the mobile station is not configured as non-access stratum signaling low priority,” indicating the time The indication information is saved by the congestion or overload control of the normal priority request.
  • the second priority indication information corresponding to the time indication information may also be the reason why the time indication information is saved. Instructing information, the reason indication information is used to indicate that the time indication information is saved because the mobility management network element performs congestion or overload control on the second priority request for priority indicated by the cause indication information.
  • the mobility management network element may use an identifier bit to indicate the reason indication information corresponding to the time indication information, and when the identifier bit is set to “the time saved by the low priority access request, ( When the time is stored due to low priority request), the time indication information is saved because the mobility management network element performs congestion or overload control on the low priority request.
  • the time indication information corresponds to The priority indicated by the second priority indication information is a low priority; when the identifier bit is set to "time is stored due to normal priority request" The time indication information is saved because the mobility management network element performs congestion or overload control on the request of the normal priority.
  • the second priority indication information corresponding to the time indication information is indicated by the second priority indication information.
  • the priority is the normal priority.
  • the mobility management network element may identify the priority of the first request of the UE by using the first priority indication information, where the first priority The level is low priority or normal priority.
  • the following describes the process of whether to perform congestion or overload control on the current request of the UE in the following cases.
  • the first case is a first case:
  • the time when the mobile management network element receives the first request is within a time range indicated by the time indication information, and the priority indicated by the first priority indication information is higher than the second priority indication information indication At the priority, it is determined that congestion or overload control is performed on the first request.
  • the mobility management network element when the time indication information is a timer, the mobility management network element indicates that the first time is received if the time when the first request is received is not timed out. The time of the request is within the indicated time range of the time indication letter.
  • the time indication information is a time, if the time when the first request is received is before the time indication signal, the indicated time indicates that the time when the first request is received is the time indication information Within the indicated time range.
  • the mobility management network element may The first request is rejected by the first request response, and the first request response message may be sent to the mobility management network element to reject the first request of the UE.
  • the case where the mobility management network element determines to perform congestion or overload control on the first request of the UE may be that the mobility management network element determines, according to a current network congestion or overload condition or a congestion or overload control policy, the UE The first request performs congestion control.
  • the mobility management network element first performs congestion or overload control only on low-priority requests, but the network congestion or overload situation is further aggravated, and the mobility management network element determines that the request for normal priority also performs congestion or overload control; a time when the time when the mobile management network element receives the first request of the UE is within a time range of the time indication information of the UE saved by the mobility management network element, and the second priority corresponding to the time indication information
  • the level indication information is a low priority, and the priority indicated by the first priority indication information carried in the first request sent by the UE is positive. Often priority, in this case, the mobility management network element can still perform congestion or overload control on the first request of the normal priority of the UE.
  • the first request response message may be a mobility management request response message, and when it is a mobility management request response message, it may be: an Attach Reject message, a Routing Area Update Reject message, 3 Tracking Area Update Reject message, Service Request Reject message, etc.
  • the mobility management network element modifies the time indication information to the newly specified time indication information, and modifies the second priority indication information, so that the priority indicated by the second priority indication information and the first priority The level indication information indicates the same priority.
  • the mobility management network element has time indication information corresponding to the UE, and second priority indication information corresponding to the time indication information, for example, the priority indicated by the second priority indication information is, for example, low. a priority, and the time when the mobile management network element receives the first request is within a time range indicated by the time indication information, and the priority indicated by the first priority indication information is, for example, a normal priority, that is, The priority indicated by the first priority indication information is higher than the priority indicated by the second priority indication information.
  • the mobility management network element determines to perform congestion or overload control on the first request of the UE according to the network condition, the mobility management network element rejects the first request of the UE, and modifies the time indication information to be newly designated.
  • the time indication information is used to modify the second priority indication information, so that the priority indicated by the second priority indication information is the same as the priority indicated by the first priority indication information.
  • the second priority indication information may further indicate, by using an identifier bit, the newly specified time indication letter, corresponding reason indication information, where the identifier bit is set to be before the modification.
  • the flag indicates low priority
  • the flag is set to "time saved due to normal priority access request", that is, the identifier
  • the bit indicates the normal priority.
  • the first request for the UE is rejected, and the mobility management network element modifies the time indication information to newly designated time indication information, and modifies the second priority indication information, so that the first The priority indicated by the second priority indication information is the same as the priority indicated by the first priority indication information.
  • the mobility management network element saves the newly specified time indication information, and the second priority indication corresponding to the newly designated time indication information Information, and the second priority indication signal, the priority of the indication is the same as the priority indicated by the first priority indication information.
  • the second priority indication information may further indicate the cause indication information corresponding to the time indication information by using an identifier bit, for example, if the priority of the first request of the UE is a low priority, The flag bit can be set to "the time saved by the low priority access request", that is, the flag bit indicates a low priority; if the first request of the UE is a normal priority, the flag bit can be It is set to "time saved due to normal priority access request", that is, the flag indicates normal priority.
  • the second case when the time when the mobile management network element receives the first request is outside the time range indicated by the time indication information, determining to perform congestion or overload control on the first request.
  • the mobility management network element determines, according to the load status of the mobility management network element and the congestion or overload control policy of the mobility management network element, that the first request of the UE is used for congestion or overload control, the mobility management network element The first request of the UE is rejected by the first request response message.
  • the mobility management network element modifies the time indication information to the newly specified time indication information, and modifies the second priority indication information, so that the priority indicated by the second priority indication information and the first priority
  • the level indication information indicates the same priority. For example, if the mobility management network element has time indication information corresponding to the UE and second priority indication information corresponding to the time indication information, and the time when the mobility management network element receives the first request is The time indicating the time indicated by the time indication information; at this time, if the mobility management network element determines to perform congestion or overload control on the first request of the UE according to the network condition, the mobility management network element rejects the first request of the UE, and Modifying the time indication information to the newly specified time indication information, and modifying the second priority indication information, so that the priority indicated by the second priority indication information and the priority indicated by the first priority indication information the same.
  • the second priority indication information may be
  • the first priority indication information carried in the first request may be a low priority or a normal priority.
  • the time when the mobile management network element receives the first request is within a time range indicated by the time indication information, and the first priority indication information indicates a higher priority than the second
  • the priority indicates the priority indicated by the information, it is determined that the first request is not subjected to congestion or overload control, and the mobility management network element accepts the first request.
  • the mobility management network element may The first request may be received by the first request, and the mobile management network element may receive the first request of the UE by sending the first request response message.
  • the mobility management network element determines that congestion or overload control is not performed on the first request of the UE, where the mobility management network element determines that the UE is not in accordance with a congestion or overload condition of the current network or a congestion or overload control policy.
  • the first request performs congestion control.
  • the mobility management network element first performs congestion or overload control only on low-priority requests, but the network congestion or overload situation is not further aggravated, and the mobility management network element still only performs congestion or overload control on low-priority requests; That is, when the mobile management network element receives the first request of the UE, the time range of the time indication information of the UE saved by the mobility management network element, and the second corresponding to the time indication information
  • the priority indication information is a low priority
  • the priority indicated by the first priority indication information carried in the first request sent by the UE is a normal priority, that is, a location carried in the first request of the UE.
  • the first priority indication information indicates that the priority is higher than the second priority indication information corresponding to the time indication information, and the priority indicated. In this case, the mobility management network element may not have the normal priority of the UE.
  • the first request of the level performs congestion or overload control.
  • the method further includes: accepting the first request of the UE.
  • the mobility management network element performs processing of a subsequent process of the corresponding mobility management request according to the type of the mobility management request message of the UE. For example, when the mobile management request message corresponding to the request is an attach request message, the mobility management network element performs authentication, location update, bearer establishment, and the like of the UE.
  • the mobility management network element sends a mobility management request response message to the UE, where the mobility management request response message indicates that the current request of the UE is accepted.
  • the mobility management request response message may be an Attach Accept/Rej ect message, a Routing Area Update Accept/Reject message, and a Tracking Area Update Accept/Reject. Message, Service Request Accept/Reject message, etc.
  • the mobility management network element may The first request of the UE is accepted by the first request response message.
  • the mobility management network element determines that congestion or overload control is not performed on the first request of the UE, where the mobility management network element determines that the UE is not in accordance with a congestion or overload condition of the current network or a congestion or overload control policy.
  • the first request performs congestion control.
  • the mobility management network element first performs congestion or overload control on the low priority or normal priority request, but the network congestion or overload condition is not further aggravated, if the mobile management network element receives the first request of the UE at the moment
  • the time range of the time indication information of the UE saved by the mobility management network element that is, the UE saved by the mobility management network element when the mobility management network element receives the first request of the UE
  • the mobility management network element may not perform congestion or overload control on the first request of the normal priority of the UE when the time indication is out of time.
  • the method further includes: accepting the first request of the UE.
  • the fifth case when the receiving moment is within the indicated time range, and the priority indicated by the first priority indication information is lower than or equal to the second priority indication information indication At the priority, it is determined that congestion or overload control is performed on the first request.
  • the mobility management network element has time indication information corresponding to the UE, and second priority indication information corresponding to the time indication information, for example, a normal priority;
  • the time when the mobile management network element receives the first request is within the time range indicated by the time indication signal, and the first priority carried in the first request is the indication information indicating a low priority, that is, The priority indicated by the first priority indication information is lower than the priority indicated by the second priority indication information.
  • the mobility management network element rejects the first request of the UE.
  • the mobility management network element has time indication information corresponding to the UE, and second priority indication information corresponding to the time indication information, for example, a normal priority; and the mobility management network element receives the The time of the first request is within the time range indicated by the time indication information, and the first priority indication information carried in the first request is indicated as a normal priority, that is, the first priority indication information indicates The priority is equal to the priority indicated by the second priority indication information. At this time, the mobility management network element rejects the first request of the UE.
  • the mobility management network element has time indication information corresponding to the UE, and second priority indication information corresponding to the time indication information, for example, a low priority; and the mobility management network element receives the The time of the first request is within the indicated time range, and the first priority carried in the first request is a low priority, that is, the priority indicated by the first priority indication information It is equal to the priority indicated by the second priority indication information. At this time, the mobility management network element rejects the first request of the UE. It should be noted that, in the embodiment of the present invention, the priority indicated by the first priority indication information is equal to the priority indicated by the second priority indication information, and the priority indicated by the first priority indication information is indicated. The level is the same as the priority indicated by the second priority indication information.
  • the sixth case the mobility management network element initially sets the time indication information and the second priority indication information.
  • time management information element and the second priority indication information are initially set, that is, the time indication information and the first part are saved in a context of the UE or a table for saving time indication information.
  • Two priority indication information may also be the first request.
  • the mobility management network element has not previously set time indication information for the UE and the second priority indication information corresponding to the time indication information, when receiving the second request by the UE.
  • the mobility management network element initially sets the time indication information and the second priority indication information, so that the second priority The priority indicated by the level indication information is the same as the priority of the second request.
  • the time indication information and the second priority indication information of the initial setting may be saved in a context of the UE or in a table for saving time indication information.
  • the time management information is specified by the mobility management network element. Specifically, the mobility management network element specifies a time range or a time identifier indicated by the time indication information.
  • the mobility management network element When the mobility management network element performs congestion or overload control on the second request of the UE, and the priority indicated by the second priority indication information included in the second request is a normal priority, the mobility management network element initially sets The time indication information and the second priority indication information.
  • the identifier bit that identifies the second priority indication information may be set to: “the mobile station is not configured as a non-access stratum signaling low priority, or
  • the mobility management network element When the mobility management network element performs congestion or overload control on the second request of the UE, and the priority indicated by the second priority indication information included in the second request is a low priority, the mobility management network element initially sets The time indication information and the second priority indication information.
  • the identifier bit that identifies the second priority indication information may be set to “the mobile station is configured as a non-access stratum signaling low priority”.
  • the mobile management network element receives the mobility management request sent by the UE, where the mobility management request includes the first priority indication information, where the first priority indication information is used to identify the priority of the mobility management request. b.
  • the mobility management network element identifies the mobility management by using the first priority indication information The priority of the request; if it is a low priority, the process in step Cg is performed; if it is the normal priority, the process in step h- is performed.
  • the mobility management network element queries whether there is time indication information corresponding to the UE. If there is time indication information corresponding to the UE, and the time when the mobile management request of the UE is received is within the time range indicated by the time indication information (ie, the time indication information is valid), then the operation in step d is performed. If there is time indication information corresponding to the UE, but the time when the mobile management request of the UE is received is not within the time range indicated by the time indication information; or the time indication information does not exist, the operation in step e is performed.
  • the mobility management network element rejects the mobility management request of the UE.
  • the mobility management network element may further obtain the second priority indication information corresponding to the time indication information; at this time, regardless of the priority indicated by the second priority indication information
  • the level is a normal priority or a low priority, that is, the priority indicated by the second priority indication information is higher than or equal to the priority indicated by the first priority indication information, and the mobility management network element rejects the mobile of the UE. Manage requests. Therefore, it is not necessary to know the priority indication information corresponding to the time indication information in this step.
  • the mobility management network element determines whether congestion or overload control is performed on the low priority mobility management request.
  • step f If the mobility management network element performs congestion or overload control on the low priority mobility management request, the operation in step f is performed; if the mobility management network element does not perform congestion or overload control on the low priority mobility management request, step g is performed. The operation in .
  • the mobility management network element rejects the low priority mobility management request of the UE.
  • the mobile management network element If the mobile management network element does not have the time indication information corresponding to the UE, the mobile management network element saves a specified time indication information and second priority indication information corresponding to the time indication information.
  • the priority indicated by the second priority indication information is a low priority.
  • step c the mobility management network element has time indication information corresponding to the UE, but the time when the mobile management request of the UE is received is not within the time range indicated by the time indication information, the mobility management network element modification corresponds to the location
  • the time indication information of the UE is the newly designated time indication information, and the second priority indication information is modified, so that the second priority refers to The priority indicated by the indication information is the same as the priority indicated by the first priority indication information.
  • the mobility management network element accepts the mobility management request of the UE.
  • the mobility management network element acquires whether there is time indication information corresponding to the UE. When there is time indication information corresponding to the UE, the mobility management network element may further obtain indication information of the second priority corresponding to the time indication information.
  • the priority of the second priority indication information corresponding to the time indication information that is obtained is normal. Priority, then proceed to the operation in step i.
  • the time when the mobility management network element receives the mobility management request of the UE is within the time range indicated by the time indication information, and the priority indicated by the second priority indication information corresponding to the time indication information is a low priority ;
  • the time when the mobility management network element receives the mobility management request of the UE is outside the time range indicated by the time indication information, and the priority indicated by the second priority indication information corresponding to the time indication information is a normal priority;
  • the time when the mobility management network element receives the mobility management request of the UE is outside the time range indicated by the time indication information, and the priority indicated by the second priority indication information corresponding to the time indication information is a low priority;
  • step j proceed to the steps in step j.
  • step in step j is performed. i.
  • the mobility management network element rejects the mobility management request of the UE. j.
  • the mobility management network element determines whether congestion or overload control is performed on the normal priority mobility management request.
  • step k If the mobility management network element performs congestion or overload control on the normal priority mobility management request, the operation in step k is performed; if the mobility management network element does not perform congestion or overload control on the normal priority mobility management request, step 1 is performed. The operation in .
  • the mobility management network element performs congestion or overload control on the normal priority mobility management request of the UE.
  • the mobility management network element If the mobile management network element does not have time indication information corresponding to the UE in the step h, Then, the mobility management network element stores a specified time indication information and a second priority indication information corresponding to the time indication information. At this time, the priority indicated by the second priority indication information is a normal priority.
  • the mobility management network element modification corresponds to The time indication information of the UE is the newly specified time indication information, and the modification priority indication information is modified, so that the priority indicated by the second priority indication information and the priority indicated by the first priority indication information Similarly, the priority indicated by the second priority indication information after modification is a normal priority.
  • the mobile management network element If the mobile management network element has the time indication information corresponding to the UE in the h step, but the time when the mobile management request of the UE is received is within the time range indicated by the time indication information, and the second priority indication information
  • the priority of the indication is a low priority; the mobility management network element modifies the time indication information corresponding to the UE to be newly designated time indication information, and modifies the second priority indication information, so that the second priority
  • the priority indicated by the indication information is the same as the priority indicated by the first priority indication information, and the priority indicated by the second priority indication information is the normal priority.
  • the mobility management network element accepts the normal priority mobility management request of the UE.
  • An embodiment of the present invention provides a method for congestion control, where a mobility management network element according to a first request of the UE, and time indication information corresponding to the UE and second priority indication information corresponding to the time indication information When a certain condition is met, whether the request of the UE is congested or overloaded may be determined according to the network condition; otherwise, the request of the UE is rejected. Therefore, when the network only performs congestion or overload control on the low-priority access request, the mobility management network element rejects the problem of supporting the normal access request of the dual-priority UE.
  • the mobility management network element is saved according to the The time indication letter, and the time indication information, the corresponding priority indication information determines whether to reject the access request from the UE, and does not need to determine whether to reject the access of the UE according to the current congestion/control policy for each access request.
  • the request improves the processing efficiency of the mobile management network element.
  • Another embodiment of the present invention provides a method for congestion control. As shown in FIG. 3, the method includes the following steps:
  • the mobility management network element receives a first request sent by the UE, where the first request is included in the packet.
  • the first priority indication information is used, where the first priority indication information is used to identify a priority of the first request.
  • the first request may be a session management request, and the corresponding first request message is a session management request message.
  • the packet may be: a Packet Data Network Connectivity Request message, activated.
  • the mobility management network element receives, according to the received time of the first request, the first priority indication information, and time indication information corresponding to the APN selected by the UE and the UE, and the time indication.
  • the second priority indication information corresponding to the information determines whether congestion or overload control is performed on the first request.
  • the mobility management network element determines, according to the parameter carried in the first request, that the UE requests access to the selected APN. Since the UE may initiate a request to select a different APN, and the congestion or overload condition between the APNs may be different, the mobility management network element performs APN granularity congestion or overload control based on the APN selected by the UE's request.
  • the mobility management network element determines, by the mobility management network element, the APN selected by the first request according to the parameter in the first request, and saving, in the context of the UE that is saved, or in a table for saving time indication information, corresponding to the UE
  • the time indication information of the APN selected by the UE and the second priority indication information corresponding to the time indication information is not limited thereto, and may be saved in any memory.
  • the mobility management network element determines the APN selected by the current request according to the parameter in the first request, and the implementation manner includes: but is not limited to: the first request includes the information of the selected APN, and the mobile The management network element determines the APN selected by the first request of the UE according to the information of the selected APN in the first request, the subscription data of the UE, and the like; or the information of the selected APN is not included in the first request, the mobility management network The element determines the APN selected by the first request of the UE according to the subscription data of the UE or the like.
  • the APN selected by the UE indicates an APN selected by the access request of the UE, and the APN pointed to by the UE indicates that the access request of the UE is selected.
  • the mobility management network element may save the mobility management network element before the UE sends the first request, if congestion or overload control is performed on the UE's request for the APN, and the request of the UE is rejected.
  • a time indication information corresponding to the APN selected by the UE and the UE and a second priority indication information corresponding to the time indication information are saved in the context of the UE, and the time indication information is a duration or a time.
  • the mobility management network element may store the time indication information and the second priority indication information corresponding to the time indication information in a table for saving time indication information.
  • the type of time indication information may be referred to as session management time indication information.
  • the mobility management network element determines a low priority or a normal priority to the APN according to the current network congestion or overload condition or the congestion or overload condition of the APN.
  • the first request is for congestion or overload control.
  • the mobility management network element stores time indication information corresponding to the UE and the APN and priority indication information corresponding to the time indication information in a context of the UE that is saved, where the mobility management network element determines the location point The first request of the low priority of the A PN performs congestion or overload control, and the second priority indication information corresponding to the time indication information indicates that the priority is low priority; if the mobility management network element determines that the pair is directed to the The first request of the normal priority of the APN performs congestion or overload control, and the priority indicated by the second priority indication information corresponding to the time indication information is a normal priority.
  • the mobility management network element may identify the priority of the first request of the UE by using the first priority indication information, where the first priority is Low priority or normal priority.
  • the following describes the process of whether to perform congestion or overload control on the current request of the UE in the following cases.
  • a first case when the time when the mobile management network element receives the first request is within a time range indicated by the time indication information, and the priority indicated by the first priority indication information is higher than the first When the priority indicates the priority indicated by the information, it is determined that the first request is subjected to congestion or overload control.
  • the mobility management network element may pass The first request response rejects the first request of the UE, and specifically may send the first request response message to the mobility management network element to reject the first request of the UE.
  • the first request response message may be a session management request response message, and when it is a session management request response message, it may be: a PDN Connectivity Reject message, and activating a packet data protocol context reject (Active) PDP Context Reject ) , ! Bearer Resource Modification Reject message, tampering with Packet Data Protocol Context Reject message, etc.
  • the mobility management network element modifies the time indication information to the newly specified time indication information, and modifies the second priority indication information, so that the priority indicated by the second priority indication information and the first priority The level indication information indicates the same priority.
  • the mobility management network element has time indication information corresponding to the ⁇ selected by the UE and the UE, and second priority indication information corresponding to the time indication information, for example, the second priority indication information
  • the priority of the indication is a low priority
  • the time when the mobile management network element receives the first request is within a time range indicated by the time indication information
  • the priority indicated by the first priority indication information is, for example, The normal priority, that is, the priority indicated by the first priority indication information is higher than the priority indicated by the second priority indication information.
  • the mobility management network element determines to perform congestion or overload control on the first request of the UE according to the network condition, rejects the first request of the UE, and modifies the time indication information to the newly designated time. And indicating the information, modifying the second priority indication information, so that the priority indicated by the second priority indication information is the same as the priority indicated by the first priority indication information.
  • the second priority indication information may further indicate the cause indication information corresponding to the newly specified time indication information by using an identifier bit, for example, the identifier bit is modified to be “access request due to normal priority”. And the saved time", that is, the flag indicates normal priority after modification.
  • the first request for the UE is rejected, and the mobility management network element modifies the time indication information to newly designated time indication information, and modifies the second priority.
  • the level indication information is such that the priority indicated by the second priority indication information is the same as the priority indicated by the first priority indication information.
  • the embodiment of the present invention is not limited thereto, and may be another implementation method: that is, the mobility management network element deletes the saved time indication information corresponding to the UE and the APN selected by the UE, and the time indication information.
  • the mobility management network element saves the newly specified time indication information, and the second priority indication information corresponding to the time indication information, and the second priority indication information indication
  • the priority of the first priority information is the same as the priority indicated by the first priority indication information.
  • the second case when the time when the mobile management network element receives the first request is outside the time range indicated by the time indication information, determining to perform congestion or overload control on the first request.
  • the mobility management network element determines to perform congestion or overload control on the first request current request of the UE, the mobility management network element rejects the first request of the UE by using the first request response message.
  • the mobility management network element modifies the time indication information to the newly specified time indication information, and modifies the second priority indication information, so that the priority indicated by the second priority indication information and the first priority The level indication information indicates the same priority.
  • the time when the mobile management network element receives the first request is within a time range indicated by the time indication information, and the first priority indication information indicates a higher priority than the second
  • the mobility management network element may The first request of the UE is accepted by the first request response message.
  • the method further includes: accepting the first request of the UE.
  • the mobility management network element performs processing of a subsequent process of the corresponding session management request according to the type of the session management request of the UE. For example:
  • the session management request message corresponding to the request is a packet data network connection establishment request
  • PDN Connectivity Request PDN Connectivity Request
  • follow-up processes include: Create Session process and Bearer Setup process.
  • the mobility management network element sends a session management request response message to the UE, where the session management request response message indicates that the current request of the UE is accepted.
  • the session management request response message may be a PDN Connectivity Accept/Reject message, an Active PDP Context Accept/Reject message, and a Bearer Resource Modification Accept/Reject ) Message, Modify Packet Data Protocol Context Accept/Rej ect message, etc.
  • the mobility management network element determines that congestion or overload control is not performed on the first request of the UE and the APN pointed by the UE, and the mobility management network element may be based on the load status of the mobility management network element, and the mobility management network.
  • the congestion or overload control policy of the element, the load status of the gateway device corresponding to the APN selected by the first request of the UE, and the like determine that congestion control is not performed on the first request of the UE.
  • the mobility management network element first performs congestion or overload control on the low priority or normal priority request, but the network congestion or overload condition is not further aggravated, if the mobile management network element receives the first request of the UE at the moment
  • the time range of the time indication information of the UE saved by the mobility management network element that is, the UE saved by the mobility management network element when the mobility management network element receives the first request of the UE
  • the mobility management network element may not perform congestion or overload control on the first request of the normal priority of the UE.
  • the method further includes: accepting the first request of the UE. The fifth case: when the receiving moment is within the indicated time range, and the priority indicated by the first priority indication information is lower than or equal to the second priority indication information indication At the priority, it is determined that congestion or overload control is performed on the first request.
  • the mobility management network element rejects the first request of the UE.
  • the mobility management network element has time indication information corresponding to the APN selected by the UE and the UE, and second priority indication information corresponding to the time indication information, for example, a normal priority;
  • the time when the mobile management network element receives the first request is within a time range indicated by the time indication information, and the first priority indication information carried in the first request is indicated as a low priority, that is, the first The priority indicated by the priority indication information is lower than the priority indicated by the second priority indication information.
  • the mobility management network element rejects the first request of the UE.
  • the mobility management network element has time indication information corresponding to the APN selected by the UE and the UE, and the second priority indication information corresponding to the time indication information, for example, a normal priority; And the time when the mobile management network element receives the first request is within a time range indicated by the time indication information, and the first priority carried in the first request is a normal priority, that is, the first priority The priority indicated by the level indication information is equal to the priority indicated by the second priority indication information. At this time, the mobility management network element rejects the first request of the UE.
  • the priority indicated by the first priority indication information is equal to the priority indicated by the second priority indication information, and the priority indicated by the first priority indication information is indicated.
  • the level is the same as the priority indicated by the second priority indication information.
  • the sixth case the mobility management network element initially sets the time indication information and the second priority indication information.
  • the mobility management network element initially sets the The time indication information and the second priority indication information, that is, the time indication information and the second priority indication information are saved in a context of the UE or a table for saving a time indication letter. It should be noted that the second request here may also be the first request.
  • the mobility management network element initially sets the time indication information and the second priority indication information after rejecting the second request of the UE and the APN pointed by the UE, so that the The priority indicated by the second priority indication information is the same as the priority of the second request.
  • the mobility management network element has not previously set time indication information for the APN selected by the UE and the UE, and the second priority indication information corresponding to the time indication information, when receiving After the second request message is sent by the UE, the mobile management network element initially sets the time indication information and the second priority, because the second request of the UE is rejected by performing congestion or overload control on the UE.
  • the indication information is such that the second priority indication letter has the same priority as the second request.
  • the time indication information and the second priority indication information of the initial setting may be saved in a context of the UE or in a table for saving time indication information.
  • An embodiment of the present invention provides a method for congestion control, where a mobility management network element according to a first request of the UE, and time indication information corresponding to the UE and second priority indication information corresponding to the time indication information
  • a mobility management network element according to a first request of the UE, and time indication information corresponding to the UE and second priority indication information corresponding to the time indication information
  • the mobility management network element is saved according to the The time indication letter, and the time indication letter, the corresponding priority indication information determines whether to reject the access request from the UE, and does not need to determine whether to reject the UE according to the current congestion/control policy for each access request.
  • the incoming request improves the processing efficiency of the mobile management network element.
  • Another embodiment of the present invention provides a method for congestion control. As shown in FIG. 4, the method includes the following steps:
  • the mobility management network element receives the first request sent by the UE and has a normal priority.
  • the first request includes: priority indication information, where the priority indication information is used to identify a priority of the first request, where the priority of the first request is a normal priority.
  • the mobile management network element obtains the normal priority access request initiated by the UE when the low priority access request is subjected to congestion or overload control, and includes the following methods: First: the mobile management network element receives The first request sent by the UE includes indication information that the UE requests access if the low priority access request is under congestion or overload control.
  • the determining, by the UE, that the low priority access request is subjected to congestion or overload control before sending the first request includes:
  • the low-priority access request sent by the UE is rejected by the mobility management network element, where the mobility management network element carries time indication information for the UE in the access request response message, and the UE indicates according to the time indication.
  • the information initiates a timer during which the UE cannot send a low priority access request.
  • the UE receives an indication of enabling EAB for a low priority access request from a Radio Access Network (RAN).
  • RAN Radio Access Network
  • the low priority RRC connection request message sent by the UE is rejected by the wireless communication network, the wireless communication network carries the time indication information for the UE in the RRC connection response message, and the UE starts the timer according to the time indication information.
  • the UE cannot send a low priority RRC access request while the timer is running.
  • the UE may determine that the low priority access request of the UE is subject to congestion or overload control.
  • an information element may be used to identify that the UE is the indication information that the access is requested when the low priority access request is under congestion or overload control. For example, a flag bit in the information element may be set to "Request access while restricting low priority” in the case of "low priority access request" ("Request access while restricting low priority”), indicating that the UE is low
  • the priority access request is requested to be accessed if it is under congestion or overload control.
  • the mobile management network element may further include the first request sent by the UE.
  • the priority indication information is used to identify the priority of the first request.
  • the priority of the first request is a normal priority.
  • the second time the time when the mobile management network element receives the first request sent by the UE, within a time range indicated by the saved time indication information corresponding to the UE or the UE and the APN selected by the UE
  • the priority of the first request is higher than the priority indication letter corresponding to the time indication information, the priority of the indication.
  • the mobility management network element identifies that the priority of the request of the UE is, for example, a normal priority, and acquires whether it saves time indication information corresponding to the UE. And priority indication information corresponding to the indication information between the instructions.
  • the management network element may determine that the UE is a normal priority access request initiated when the low priority access request is under congestion or overload control.
  • the mobility management network element identifies that the priority of the first request of the UE is, for example, a normal priority, and determines the locality of the UE according to the parameter in the first request.
  • the APN selected by the secondary access request and obtaining time indicating information corresponding to the APN selected by the UE and the UE, and priority indication information corresponding to the indication information between the UEs.
  • the mobility management network element may determine that the UE is a normal priority access request initiated when the low priority access request is under congestion or overload control.
  • the mobile management network element receives the first request that the priority sent by the UE is a normal priority after the RAN is notified to the RAN to perform EAB on the low-priority access request of the UE.
  • the first request may be a mobility management request, and the corresponding first request message may be a mobility management request message; the first request may also be a session management request, and the corresponding A request message can be a session management request; Xiao, .
  • the first request can be an Attch Request, a PDN Connectivity Request, or an Activate PDP Context Request.
  • the mobility management network element sends a session management message to the gateway device according to the first request, where the session management message includes, to indicate that a low priority access request in the UE is congested or overloaded.
  • the control information is allocated to the UE when the control is performed.
  • the mobility management network element determines, according to the first request, that the UE initiates a normal priority access request when the low priority access request is subjected to congestion or overload control
  • the mobility management network element sends the UE to the UE.
  • the gateway device corresponding to the selected APN sends a session management message, where the session management message includes identifier information for indicating that the UE is allocated a bearer when the low priority access request of the UE is subjected to congestion or overload control. .
  • the session management message may be a Create PDP Context Request message or a Create Session Request message.
  • an information element in the session management message may be used to identify the identification information of the bearer when the low priority access request of the UE is subjected to congestion or overload control.
  • one flag bit in the information unit may be set to “identity information that is assigned when the low priority access request is subjected to congestion or overload control, and is identified as “Create bearer while restricting low priority”).
  • the UE allocates a bearer when a low priority access request is under congestion or overload control.
  • the third method that is, the mobility management network element determines, by using the second method or the third method, that the UE is normal when the low priority access request is under congestion or overload control.
  • the priority of the access request the mobility management network element further saves information about the bearer to be established by the UE, where the information about the bearer includes: a bearer identifier, and the UE is congested or overloaded in a low priority access request. Request for access in case of control Show information.
  • the gateway device allocates a bearer to the UE, and saves, in a context of the bearer, a bearer that is used to indicate that the bearer is allocated when a low-priority access request of the UE is subjected to congestion or overload control.
  • Identification information can be used to identify that the bearer is a bearer allocated by the UE when the low priority access request is under congestion or overload control.
  • the gateway device sends a session management response message to the mobility management network element, where the session management response message carries indication information that has been allocated a bearer for the UE.
  • the session management response message sent by the gateway device to the mobility management network element may be a Create PDP Context Response message, a Create Session Response message, or the like.
  • the mobility management network element saves, in the context of the bearer, an indication that the bearer is a low priority access request when the UE is congested or overloaded.
  • the mobility management network element and the gateway device when the mobility management network element and the gateway device save, in the context of the respective bearer, the bearer or overload control is configured to indicate that the bearer is a low priority access request of the UE.
  • the mobility management network element and the gateway device may save, in the charging data record (CDR) for the bearer, the low priority that is used to indicate that the bearer is the UE.
  • CDR charging data record
  • an information element in the CDR may be used to identify that the UE allocates the identifier information of the bearer when the low priority access request is subjected to congestion or overload control.
  • one flag bit in the information unit may be set to “A low-priority access request is allocated when the access request is under congestion or overload control”, and the identifier is that the UE is in a low-priority access request is congested or overloaded.
  • the bearer is allocated during control.
  • the bearer may refer to an EPS bearer, a PDN connection, a PDP Context, and the like.
  • the mobile management network element responds to the first request of the UE, and specifically, the first request response message is sent, where the first request response message indicates that the current access request of the UE is accepted.
  • the first request response may be an Attach Accept, a PDN Connectivity Accept, an Active PDP Context Accept, or the like. It should be noted that the congestion or overload control method of all embodiments of the present invention can be applied to various wireless communication networks.
  • the mobility management network element may be a Mobility Management Entity (MME), or may be a Serving GPRS Supporting Node (SGSN), such as a General Packet Radio Service (GPRS) support node (SGSN).
  • MME Mobility Management Entity
  • SGSN Serving GPRS Supporting Node
  • GPRS General Packet Radio Service
  • the gateway device may be a Serving Gateway (S-GW), or may be a Packet Data Network Gateway (P-GW), or may be a General Packet Radio Service (General Packet Radio Service).
  • S-GW Serving Gateway
  • P-GW Packet Data Network Gateway
  • GPRS General Packet Radio Service
  • GGSN Gateway GPRS Supporting Node
  • the user equipment may be any of the following, and the UE may be static or mobile.
  • the stationary UE may be included as a terminal, a mobile station, a Subscriber Unit, or a station.
  • Mobile UEs may include Cellular Phones, Personal Digital Assistants (PDAs), wireless modems, wireless communication devices, handhelds, laptop computers, Cordless Phone or Wireless Local Loop (WLL).
  • PDAs Personal Digital Assistants
  • WLL Wireless Local Loop
  • the above UEs may be distributed throughout the wireless network.
  • An embodiment of the present invention provides a method for congestion control, where a mobility management network element includes, according to a first request of a normal priority sent by a UE, a gateway device, to indicate that a low priority access request at the UE is congested or
  • the overload information is used to allocate the identifier information of the bearer to the UE, so that the gateway device allocates a bearer to the UE, and saves, in the context of the bearer, an access request indicating that the bearer is a low priority in the UE.
  • the mobility management network element After the gateway device allocates the bearer, the mobility management network element also stores the identifier information in the context of the bearer.
  • the mobility management network element and the gateway device may store, in the CDR of the bearer, identifier information indicating that the bearer is a bearer allocated when the low priority access request of the UE is subjected to congestion or overload control, such that The network operator can further perform separate charging for the type of bearer, and can also perform good management for the UE supporting dual priority.
  • Embodiments of the present invention provide a system for congestion control, where the system includes a mobility management network element. Based on the system, the embodiment of the present invention provides a mobility management network element, and the mobility management network element 10 corresponds to the mobility management network element in a congestion control method provided by the first two embodiments of the foregoing method.
  • the mobility management network element 10 includes: a receiving unit 101, configured to receive a first request sent by a UE, where the first request includes first priority indication information, where the first priority The indication information is used to identify the priority of the first request.
  • the UE may be configured to support dual priority, that is, support low-priority and normal-priority network access.
  • the UE may also be configured to support only low priority access network access.
  • the first priority indication information may be encapsulated in a device attribute cell, wherein the first attribute request includes the device attribute cell.
  • the priority of the first request is Normal priority.
  • the processing unit 102 is configured to receive, according to the receiving unit 101, the receiving time of the first request, the first priority indication information, and the time indication information corresponding to the UE and the time indication information.
  • the second priority indication information determines whether congestion or overload control is performed on the first request.
  • the mobility management network element may query, in a context of the UE that it holds, or a table for saving time indication information, whether there is time indication information corresponding to the UE or the UE and the APN selected by the UE, and The second priority indication information corresponding to the time indication information; but the embodiment of the present invention is not limited thereto, and may be saved in any storage unit.
  • the mobility management network element may perform the congestion or overload control on the UE and reject the request of the UE before the UE sends the first request, where the mobility management network element may be in the context of the UE that it saves.
  • the time indication information corresponding to the APN selected by the UE or the UE and the UE and the second priority indication information corresponding to the time indication information are saved, and the time indication information is a duration or a time.
  • the mobility management network element may further store the time indication information and the second priority indication information corresponding to the time indication information in a table for saving time indication information.
  • the type of time indication information may be referred to as mobility management time indication information.
  • the first request may be a mobility management request or a session management request.
  • the time indication information and the first time indication information correspond to The time indication information
  • the first time indication information corresponds to the UE and the APN selected by the UE, when the first request is a session management request.
  • the processing unit 102 is specifically configured to: when the receiving unit 101 receives the first request, the time indicated by the time indication information, and the first priority indication information indicates When the priority is higher than the priority indicated by the second priority indication information; determining to perform congestion or overload control on the first request.
  • the processing unit 102 is specifically configured to: if the time when the receiving unit 101 receives the first request is outside a time range indicated by the time indication information, determine to congest the first request or Overload control. In this case, the processing unit 102 is further configured to modify the time indication information to be the newly specified time indication information, and modify the second priority indication information, so that the second priority indication information indicates the priority. The level is the same as the priority indicated by the first priority indication information.
  • the priority indicated by the second priority indication information corresponding to the time indication information is, for example, a low priority.
  • the processing unit 102 learns that the time of the first request received by the receiving unit 101 is within the time range indicated by the time indication information, and the priority indicated by the first priority indication information is higher than The second priority indicates the priority indicated by the information.
  • the processing unit 102 determines to perform congestion or overload control on the first request of the UE according to the network condition, rejecting the first request of the UE, and modifying the The time indication information is the newly specified time indication information, and the second priority indication information is modified, so that the priority indicated by the second priority indication information is the same as the priority indicated by the first priority indication information.
  • the processing unit 102 is specifically configured to: when the receiving unit receives 101, the receiving moment to the first request is within the indicated time range, and the first time When the priority indication information indicates a priority higher than the priority indicated by the second priority indication information; determining to not perform congestion or overload control on the first request.
  • the processing unit 102 is specifically configured to: when the receiving time that the receiving unit 101 receives the first request is outside the indicated time range, and determine that the first request is not Perform congestion or overload control.
  • the processing unit 102 may be further configured to receive the first request of the UE by using the first request response.
  • the processing unit 102 is specifically configured to: when the receiving unit 101 receives the first request, in a time range indicated by the time indication information, and the first priority indication information indicates When the priority is lower than or equal to the priority indicated by the second priority indication information; then, determining to perform congestion or overload control on the first request.
  • the processing unit 102 determines whether there is time indication information corresponding to the UE or the UE and the APN selected by the UE in the mobility management network element, and second priority indication information corresponding to the time indication information, for example, normal priority If the processing unit 102 knows that the receiving unit 101 is connected The time when the first request is received is within the time range indicated by the time indication information, and the first priority indication information carried in the first request is indicated as a low priority, that is, the first priority indication information If the indicated priority is lower than or equal to the priority indicated by the second priority indication information, the first request of the UE is rejected.
  • the processing unit 102 is further configured to initially set the time indication information and the second priority indication information. If there is no time indication information corresponding to the UE, and the second priority indication information corresponding to the time indication information, when congestion or overload control is performed on the second request of the UE, The processing unit 102 initially sets the time indication information and the second priority indication information.
  • the second request may be the first request.
  • processing unit 102 is configured to: after the second request of the UE is rejected, initially setting the time indication information and the second priority indication information, so that the second priority indication information indication The priority of the second request is the same as the priority of the second request.
  • the processing unit 102 has not previously set the time indication information selected for the UE or the UE and the UE, and the second priority indication information corresponding to the time indication information, when the receiving unit 101 After receiving the second request message sent by the UE, the processing unit 102 initially sets the time indication information and the second priority, because the second request of the UE is rejected by performing congestion or overload control on the UE.
  • the level indication information is such that the priority indicated by the second priority indication information is the same as the priority of the second request.
  • the time indication information and the second priority indication information of the initial setting may be saved in a context of the U E or in a table for saving time indication information.
  • the mobility management network element 10 further includes:
  • the storage unit 103 is configured to store the information corresponding to the UE and the second priority.
  • the embodiment of the present invention provides a mobility management network element, where the mobility management network element receives the first request of the UE, and the time indication information corresponding to the UE and the second priority corresponding to the time indication information.
  • the level indication information when a certain condition is met, may determine whether to perform congestion or overload control on the request of the UE according to the network condition; otherwise, reject the request of the UE. Therefore, when the network only performs congestion or overload control on low priority access requests, The mobile management network element may reject the problem of supporting the normal access request of the dual-priority UE.
  • the mobility management network element determines whether to reject the connection from the UE according to the saved time indication information and the priority indication information corresponding to the time indication information.
  • the incoming request does not need to determine whether to reject the access request of the UE according to the current congestion/control policy for each access request, thereby improving the processing efficiency of the mobility management network element.
  • Yet another embodiment of the present invention provides a system for congestion control, the system including a mobility management network element, a UE, and a gateway device. Based on the system, the embodiment of the present invention provides another mobility management network element 20, the mobility management network element 20, and the mobility management network element in a congestion control method provided by the third embodiment of the foregoing method.
  • the mobile management network element 20 includes: a receiving unit 201, configured to receive, when the low-priority access request of the UE is subjected to congestion or overload control, receive the first priority with a normal priority sent by the UE request. a generating unit 202, configured to generate a session management message according to the first request received by the receiving unit 201, where the session management message includes, to indicate that a low priority access request at the UE is subjected to congestion or overload control The identifier information of the bearer is allocated to the UE.
  • the generating unit 202 may determine that the UE is in a low priority according to the indication information that the low priority access request is requested to be accessed when the first request received by the receiving unit 201 is subjected to congestion or overload control.
  • the normal access request initiated by the access request is subject to congestion or overload control.
  • the low-priority access request sent by the UE is rejected by the mobility management network element, where the mobility management network element carries time indication information for the UE in the access request response message, and the UE indicates according to the time indication.
  • the information starts a timer, and during the running of the timer, the low priority access request cannot be sent.
  • the UE receives, from the wireless communication network, indication information that the EAB is enabled for the low priority access request.
  • the RAN may carry the EAB-enabled indication information in the broadcast message that it sends, and the UE obtains the EAB-enabled indication information by receiving the broadcast message.
  • the low priority RRC connection request message sent by the UE is rejected by the wireless communication network, where the wireless communication network carries the time indication information for the UE in the RRC connection response message, and the UE starts according to the time indication information. a timer, the UE cannot send the low priority RRC connection request when the timer is running.
  • the UE may determine that the low priority access request of the UE is subject to congestion or overload control.
  • the receiving unit 201 is specifically configured to: when the low priority access request of the UE is subjected to congestion or overload control, the mobility management network element notifies the radio access network of the low priority of the UE After the access request is performed by the EAB, the first request sent by the UE is received.
  • the generating unit 202 may determine, according to the information of the receiving unit 201, that the UE is a normal priority access request initiated when the low priority access request is under congestion or overload control.
  • the receiving unit 201 is specifically configured to: when the low-priority access request of the UE is subjected to congestion or overload control, the time indication corresponding to the UE that is saved at the time of receiving the first request Within the time range indicated by the information, the priority of the first request of the UE is higher than the priority indicated by the priority indication information corresponding to the time indication information.
  • the generating unit 202 may determine, according to the information of the receiving unit 201, that the UE is a normal priority access request initiated when the low priority access request is under congestion or overload control.
  • a sending unit 203 configured to send, by the generating unit 202, the session management message to the gateway device, to save, by the gateway device, in a context of a bearer allocated to the UE, to indicate the
  • the bearer is identification information of the bearer allocated when the low priority access request of the UE is subjected to congestion or overload control.
  • the mobility management network element further includes a processing unit 204, configured to save, in the generated charging data record of the bearer, a low priority for indicating that the bearer is in the UE
  • the level of access request is subject to the identification information of the bearer allocated when congestion or overload control.
  • the processing unit 204 is further configured to: after the gateway device allocates the bearer, save, in a context of the bearer, a low priority for indicating that the bearer is at the UE The identification information of the bearer allocated when the access request is subjected to congestion or overload control.
  • the processing unit 204 is further configured to determine that the normal priority access request initiated by the UE when the low priority access request is subjected to congestion or overload control is not directly obtained from the first request, The processing unit 204 is further configured to: before the gateway device allocates the bearer, save information about a bearer to be established by the UE, where the information about the bearer includes: the bearer identifier, where the UE is low The indication that the priority access request is requested to be accessed under the condition of congestion or overload control.
  • the processing unit 204 is further configured to save, in the generated CDR of the bearer, a bearer that is used to indicate that the bearer is allocated when a low priority access request of the UE is subjected to congestion or overload control.
  • the identification information so that the CDR can be indicated by the identifier information as the CDR of the bearer allocated by the UE when the low priority access request is subjected to congestion or overload control.
  • the embodiment of the present invention provides a mobility management network element, which is configured to indicate to a gateway device that when a low priority access request of the UE is subjected to congestion or overload control, according to the first request of the normal priority sent by the UE,
  • the UE allocates the identifier information of the bearer, so that the gateway device allocates a bearer to the UE, and saves, in the context of the bearer, an access request indicating that the bearer is a low priority in the UE is congested or overloaded.
  • the identification information of the bearer allocated during control, after the gateway device allocates the bearer, the mobility management network element also stores the identifier information in the context of the bearer.
  • the mobility management network element and the gateway device may store, in the CDR of the bearer, identifier information indicating that the bearer is a bearer allocated when the low priority access request of the UE is subjected to congestion or overload control, such that The network operator can further perform separate charging for the type of bearer, and can also well manage the UEs supporting dual priorities.
  • the embodiment of the present invention provides another UE 30, and the UE 30 and the third embodiment of the foregoing method provide a method for congestion control.
  • the description of the above steps may be omitted for the specific description of each unit, and details are not described herein again.
  • the UE 30 includes: a processing unit 301, configured to determine that a low priority access request is subjected to congestion or overload control.
  • the processing unit 301 is specifically configured to be rejected by the mobility management network element according to the sent low priority access request, where the mobility management network element is in an access request response message.
  • the UE Carrying time indication information for the UE, the UE starts a timer according to the time indication information, and cannot send the low priority access request during the running of the timer; or receives a pair from the wireless communication network
  • the low priority access request enables indication information of the extended access control EAB; or
  • the sent low priority radio resource control RRC connection request message is rejected by the wireless communication network, the radio communication network carries time indication information for the UE in the RRC connection response message, and the UE starts timing according to the time indication information.
  • the UE may not send the low priority RRC connection request when the timer is running; and determine that the low priority access request is subjected to congestion or overload control.
  • the generating unit 302 is configured to: when the processing unit 301 determines that the low-priority access request is subjected to congestion or overload control, generate a first request, where the first request includes a low-priority access request being congested Or instructions for requesting access during overload control.
  • the first request may be a mobility management request or a session management request.
  • the first request generated by the generating unit 302 further includes: priority indication information, where the priority indication information is used to identify a priority of the first request; wherein, the priority of the first request For normal priority.
  • the sending unit 303 is configured to send the first request generated by the generating unit 302 to the mobility management network element, so that the mobility management network element and the gateway device allocate a bearer to the UE, and in the bearer
  • the identifier information for identifying the bearer allocated when the low priority access request of the UE is subjected to congestion or overload control is saved in the context.
  • An embodiment of the present invention provides a UE, where a UE sends a first request for requesting access information when a low-priority access request is subjected to congestion or overload control to a mobility management network element, so that the mobility management network element and The gateway device allocates a bearer to the UE, and saves the identifier information of the bearer when the low priority access request is subjected to congestion or overload control in the context of the bearer.
  • the system for congestion control provides a gateway device 40, and the gateway device 40 and the method for congestion control provided by the third embodiment of the foregoing method are
  • the gateway device corresponds to each other, so The description of the above steps may be omitted, and details are not described herein again.
  • the gateway device 40 includes: a receiving unit 401, configured to receive a session management message sent by a mobility management network element, where the session management message includes an indication that when a low priority access request of the UE is received The identity information of the bearer is allocated to the UE during congestion or overload control.
  • the gateway device corresponds to the access point name APN selected by the UE for the current access request.
  • the processing unit 402 is configured to allocate, according to the session management message received by the receiving unit 401, the bearer to the UE, and save, in the context of the bearer, the bearer to be used as the UE.
  • the identifier information of the bearer is allocated when the low priority access request is under congestion or overload control.
  • the generating unit 403 is configured to generate a session management response message according to the processing result of the processing unit 402, where the session management response message carries indication information that has been allocated a bearer for the UE.
  • the sending unit 404 is configured to send the first response message generated by the generating unit 403 to the mobility management network element. Further, the processing unit 402 is further configured to: when the generated CDR in the bearer is used to indicate that the bearer is a low priority access request when the UE is subjected to congestion or overload control, The identification information of the bearer allocated by the UE.
  • the CDR is indicated by the identification information as a CDR of the bearer allocated by the UE when the low priority access request is subjected to congestion or overload control.
  • an information element in the CDR may be used to identify the identifier information of the bearer allocated when the low priority access request is subjected to congestion or overload control.
  • one flag bit in the information element is set to “lower priority access request is allocated when the congestion or overload control is received”, it is used to identify that the UE is in a low priority access request is congested or The CDRs are assigned during overload control.
  • the embodiment of the present invention provides a gateway device, when receiving the identifier information that is sent by the mobility management network element and is used to indicate that the low priority access request of the UE is subjected to congestion or overload control, Access management request for the UE A bearer is allocated, and identifier information indicating that the bearer is allocated when the UE is in a low priority access request is subjected to congestion or overload control is stored in the context of the bearer.
  • Embodiments of the present invention provide a system for congestion control, where the system includes a mobility management network element.
  • the embodiment of the present invention provides a mobility management network element 50, and the mobility management network element 50 is related to the mobility management network element in a congestion control method provided by the first two embodiments of the foregoing method.
  • the detailed description of each module may be the description of the above steps, and details are not described herein again.
  • the mobility management network element 50 includes: a receiving module 501, configured to receive a first request sent by a UE, where the first request includes first priority indication information, where the first priority The level indication information is used to identify the priority of the first request.
  • the UE may be configured to support dual priority, that is, support low-priority and normal-priority network access. The UE may also be configured to support only low priority access network access.
  • the first priority indication information may be encapsulated in a device attribute cell, wherein the first attribute request includes the device attribute cell. For example: when the corresponding identifier bit in the device attribute cell is set to "mobile station configured as non-access stratum signaling low priority", indicating that the priority of the first request is a low priority; when the device attribute letter When the corresponding flag bit in the element is set to "the mobile station is not configured as the non-access stratum signaling low priority", the priority of the first request is the normal priority.
  • the processor 502 is configured to The receiving time of the first request received by the receiving module 501 and the first priority indication information, and time indication information corresponding to the UE, and second priority indication information corresponding to the time indication information Determining whether to perform congestion or overload control on the first request of the UE.
  • the mobility management network element can be in the context of the UE it holds or used to save time Querying, in the table of the indication information, whether there is time indication information corresponding to the UE or the UE and the APN selected by the UE, and the second priority indication information corresponding to the time indication information; Embodiments are not limited thereto, and may be saved in any memory.
  • the mobility management network element may perform the congestion or overload control on the UE and reject the request of the UE before the UE sends the first request, where the mobility management network element may be in the context of the UE that it saves.
  • the time indication information corresponding to the APN selected by the UE or the UE and the UE and the second priority indication information corresponding to the time indication information are saved, and the time indication information is a duration or a time.
  • the mobility management network element may further store the time indication information and the second priority indication information corresponding to the time indication information in a table for saving time indication information.
  • the type of time indication information may be referred to as mobility management time indication information.
  • the first request may be a mobility management request, or may be a session management request; when the first request is a mobility management request, the time indication information, the first time indication information corresponds to And the time indication information, the first time indication information corresponds to the UE and the APN selected by the UE, when the first request is a session management request.
  • the processor 502 is specifically configured to: when the receiving module 501 receives the first request, the time indicated by the time indication information, and the first priority indication information indicates When the priority is higher than the priority indicated by the second priority indication information; determining to perform congestion or overload control on the first request.
  • the processor 502 is specifically configured to: when the time when the receiving module 501 receives the first request is outside a time range indicated by the time indication information, determine to congest the first request or Overload control.
  • the processor 502 is further configured to modify the time indication information to be newly specified time indication information, and modify the second priority indication information, so that the second priority indication information indicates a priority.
  • the level is the same as the priority indicated by the first priority indication information.
  • the mobile management network element has time indication information corresponding to the APN selected by the UE or the UE, and second priority indication information corresponding to the time indication information
  • the priority of the indication is, for example, a low priority; in this case, if the processor 502 knows that the time of the first request received by the receiving module 501 is within the indicated time range, the first priority The priority indicated by the level indication information is higher than the priority indicated by the second priority indication information. If the processor 502 determines to perform congestion or overload control on the first request of the UE according to the network condition, the priority is rejected. Determining, by the first request of the UE, the time indication information as the newly specified time indication information, modifying the second priority indication information, so that the priority indicated by the second priority indication information is different from the first priority The level indication information indicates the same priority.
  • the processor 502 when the receiving module receives the first request, the receiving moment is within a time range indicated by the time indication information, and the first priority indication information When the priority of the indication is higher than the priority indicated by the second priority indication information; determining that congestion or overload control is not performed on the first request.
  • the processor 502 is specifically configured to: when the receiving moment that the receiving module 501 receives the first request is outside the indicated time range of the time indication message, determine that the first request is not Perform congestion or overload control.
  • the processor 502 is further configured to receive the first request of the UE by using the first request response.
  • the processor 502 is specifically configured to: when the receiving module 501 receives the first request, the time indicated by the time indication information, and the first priority indication information indicates When the priority is lower than or equal to the priority indicated by the second priority indication information; then, determining to perform congestion or overload control on the first request.
  • time indication information corresponding to the UE or the UE and the APN selected by the UE in the mobility management network element For example, if there is time indication information corresponding to the UE or the UE and the APN selected by the UE in the mobility management network element, and second priority indication information corresponding to the time indication information, for example, normal priority
  • the processor 502 learns that the time when the receiving module 501 receives the first request is within the time range indicated by the time indication information, and the first priority indication information carried in the first request is indicated as a low priority
  • the first priority indication information indicates that the priority is lower than or equal to the priority indicated by the second priority indication information, and the first request of the UE is rejected.
  • the processor 502 is further configured to initially set the time indication information and the second priority indication information.
  • the processor 502 initially sets the time indication information and the second priority indication information. It should be noted that the second request described herein may be the first request.
  • the processor 502 is configured to: after the second request of the UE is rejected, initially setting the time indication information and the second priority indication information, so that the second priority indication information indication The priority of the second request is the same as the priority of the second request.
  • the processor 502 has not previously set the time indication information selected by the UE or the UE and the UE, and the second priority indication information corresponding to the time indication information, when the receiving module 501 After receiving the second request message sent by the UE, the processor 502 initially sets the time indication information and the second priority, because the second request of the UE is rejected by performing congestion or overload control on the UE.
  • the level indication information is such that the priority indicated by the second priority indication information is the same as the priority of the second request.
  • the time indication information and the second priority indication information of the initial setting may be saved in a context of the U E or in a table for saving time indication information.
  • the mobility management network element 50 further includes: a register 503, configured to store the information corresponding to the UE and the second priority indication.
  • An embodiment of the present invention provides a mobility management network element, where a mobility management network element receives a second request according to the UE, and a time indication information corresponding to the UE and a second corresponding to the time indication information.
  • the priority indication information when a certain condition is met, may determine whether to perform congestion or overload control on the current request of the UE according to the network condition; otherwise, reject the current request of the UE. Therefore, when the network only performs congestion or overload control on the low-priority access request, the mobility management network element rejects the problem of supporting the normal access request of the dual-priority UE.
  • the mobility management network element is saved according to the The time indication information and the priority indication information corresponding to the time indication information determine whether to reject the current access request from the UE, and do not need to determine whether to reject the UE according to the current congestion/control policy for each access request.
  • the access request improves the processing efficiency of the mobility management network element.
  • Yet another embodiment of the present invention provides a system for congestion control, the system including a mobile tube The network element, UE and gateway device. Based on the system, the embodiment of the present invention provides another mobility management network element 60, the mobility management network element 60, and the mobility management network element in a congestion control method provided by the third embodiment of the foregoing method. Corresponding to the detailed description of each module, the description of the above steps may be omitted.
  • the mobile management network element 60 includes: a receiving module 601, configured to receive, when the low-priority access request of the UE is subjected to congestion or overload control, receive the first priority with the normal priority sent by the UE. request.
  • the first request may be a mobility management request, or may be a session management request processor 602, configured to generate a session management message according to the first request received by the receiving module 601, where the session management The message includes identifier information for indicating that the UE is allocated a bearer when the low priority access request of the UE is subjected to congestion or overload control.
  • the processor 602 may determine, according to the indication information that the first request received by the receiving module 601 includes a low priority access request that is requested to be accessed during congestion or overload control, to determine that the UE is A normal priority access request initiated when a low priority access request is under congestion or overload control.
  • the situation that the UE determines that the low priority access request is subjected to congestion or overload control may include:
  • the low-priority access request sent by the UE is rejected by the mobility management network element, where the mobility management network element carries time indication information for the UE in the access request response message, and the UE indicates according to the time indication.
  • the information starts a timer, and during the running of the timer, the low priority access request cannot be sent.
  • the UE receives, from the wireless communication network, indication information that the EAB is enabled for the low priority access request.
  • the RAN may carry the EAB-enabled indication information in the broadcast message it sends, and the UE obtains the EAB-enabled indication information by receiving the broadcast message.
  • the low priority RRC connection request message sent by the UE is rejected by the wireless communication network, where the wireless communication network carries the time indication information for the UE in the RRC connection response message, and the UE starts according to the time indication information. a timer, the UE cannot send the low priority RRC connection request when the timer is running.
  • the receiving module 601 is specifically configured to: when the low priority access request of the UE is subjected to congestion or overload control, the mobility management network element notifies the radio access network of the low priority of the UE After the access request is performed by the EAB, the first request sent by the UE is received.
  • the processor 602 may determine, according to the information of the receiving module 601, that the UE is a normal priority access request initiated when a low priority access request is under congestion or overload control.
  • the receiving module 601 is specifically configured to: when the low-priority access request of the UE is subjected to congestion or overload control, the time indication corresponding to the UE that is saved at the moment of receiving the first request Within the time range indicated by the information, the priority of the first request of the UE is higher than the priority indicated by the priority indication information corresponding to the time indication information.
  • the processor 602 may determine, according to the information of the receiving module 601, that the UE is a normal priority access request initiated when a low priority access request is under congestion or overload control.
  • the sending module 60 is configured to send the session management message generated by the processor 602 to the gateway device, so that the gateway device saves, in the context of the bearer allocated for the UE, the bearer Is the identification information of the bearer allocated when the low priority access request of the UE is subjected to congestion or overload control.
  • the processor 602 is further configured to: when the generated charging data record of the bearer is used to indicate that the bearer is a low priority access request of the UE, being subjected to congestion or overload control The assigned identification information of the bearer.
  • the processor 602 is further configured to: after the gateway device allocates the bearer, save, in the context of the bearer, an access request indicating that the bearer is a low priority of the UE, Identification information of bearers allocated during congestion or overload control.
  • the processor 602 is configured to: when determining that the normal priority access request initiated by the UE when the low priority access request is subjected to congestion or overload control is not directly obtained from the first request, Before the bearer allocates the bearer, the information about the bearer to be established by the UE is saved, and the information about the bearer includes: the bearer identifier, and the access request of the UE in a low priority is subjected to congestion or overload control. Indications for requesting access.
  • the processor 602 is further configured to save in the generated CDR of the bearer. And storing, by the identifier, the identifier information of the bearer that is allocated when the low-priority access request of the UE is subjected to congestion or overload control, so that the CDR is indicated by the identifier information to be the UE at a low priority.
  • the access request is subject to the CDR of the bearer allocated during congestion or overload control.
  • the embodiment of the present invention provides a mobility management network element, which is configured to indicate to a gateway device that when a low priority access request of the UE is subjected to congestion or overload control, according to the first request of the normal priority sent by the UE,
  • the UE allocates the identifier information of the bearer, so that the gateway device allocates a bearer to the UE, and saves, in the context of the bearer, an access request indicating that the bearer is a low priority in the UE is congested or overloaded.
  • the identification information of the bearer allocated during control, after the gateway device allocates the bearer, the mobility management network element also stores the identifier information in the context of the bearer.
  • the mobility management network element and the gateway device may store, in the CDR of the bearer, identifier information indicating that the bearer is a bearer allocated when the low priority access request of the UE is subjected to congestion or overload control, such that The network operator can further perform separate charging for the type of bearer, and can also well manage the UEs supporting dual priorities.
  • the embodiment of the present invention provides another UE 70, and the UE 70 and the third embodiment of the foregoing method provide a method for congestion control.
  • the UE 70 includes: a processor 701, configured to determine that a low priority access request is subjected to congestion or overload control, and generate a first request, where the first request includes a low priority access. Instructions for requesting access when the request is under congestion or overload control.
  • the processor 701 is specifically configured to be rejected by the mobility management network element according to the sent low priority access request, where the mobility management network element carries the target in the access request response message.
  • the transmitted low priority radio resource control RRC connection request message is rejected by the wireless communication network, and the wireless communication network carries the time for the UE in the RRC connection response message. Instructing, the UE starts a timer according to the time indication information, and the UE cannot send the low priority RRC connection request when the timer is running; determining that the low priority access request is congested or The overload control generates a first request, where the first request includes indication information that the low priority access request requests access when the congestion or overload control is received.
  • the first request generated by the processor 701 further includes: priority indication information, where the priority indication information is used to identify a priority of the first request; wherein, the priority of the first request For normal priority.
  • the first request may be a mobility management request or a session management request.
  • the sending module 702 is configured to send the first request generated by the processor 701 to a mobility management network element, so that the mobility management network element and the gateway device allocate a bearer for the UE, and The identifier of the bearer allocated when the access request of the low priority of the UE is subjected to congestion or overload control is saved in the context of the bearer.
  • An embodiment of the present invention provides a UE, where a UE sends a first request for requesting access information when a low-priority access request is subjected to congestion or overload control to a mobility management network element, so that the mobility management network element and The gateway device allocates a bearer to the UE, and saves the identifier information of the bearer when the low priority access request is subjected to congestion or overload control in the context of the bearer.
  • the embodiment of the present invention provides another gateway device 80, and the gateway device 80 and the method for congestion control provided by the third embodiment of the foregoing method are The description of the above steps may be omitted for the specific description of each module, and details are not described herein again.
  • the gateway device 80 includes: a receiving module 801, configured to receive a session management message sent by a mobility management network element, where the session management message includes a low priority access request for indicating the UE The UE is assigned identification information of the bearer when subjected to congestion or overload control.
  • the gateway device corresponds to the APN selected by the UE for the current access request.
  • the processor 802 is configured to use, according to the session management message received by the receiving module 801, Allocating the bearer to the UE, and storing, in the context of the bearer, identifier information for indicating that the bearer is allocated when the low priority access request of the UE is subjected to congestion or overload control And generating a session management response message, where the session management response message carries indication information that the bearer has been allocated to the UE.
  • the sending module 803 is configured to send the first response message generated by the processor 802 to the mobility management network element.
  • the sending module is configured to send the session management response message generated by the processor to the mobility management network element.
  • the processor 802 is further configured to: when the generated CDR of the bearer is used to indicate that the bearer is a low priority access request of the UE, being subjected to congestion or overload control, Identification information of the bearer allocated by the UE.
  • one information element in the CDR may be used to identify the identifier information of the bearer allocated when the low priority access request is under congestion or overload control.
  • one flag bit in the information element is set to “lower priority access request is allocated when the congestion or overload control is received”, it is used to identify that the UE is in a low priority access request is congested or The CDR of the load assigned during overload control.
  • the embodiment of the present invention provides a gateway device, when receiving the identifier information that is sent by the mobility management network element and is used to indicate that the low priority access request of the UE is subjected to congestion or overload control, a session management message, allocate a bearer for the access request of the UE, and save in the context of the bearer to indicate that the bearer is when the UE is in a low priority access request is subjected to congestion or overload control Assign the identity information of the bearer.
  • the bearer of this type can perform separate charging, and can also obtain the information of the access of the user equipment when the low-priority access request is subjected to congestion or overload control by using the CDR statistics of the bearer, thereby enabling UEs supporting dual priorities. Perform a good management.

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Abstract

本发明实施例提供了一种拥塞控制的方法、设备及系统,涉及通信领域,可解决在对UE的低优先级的接入请求进行拥塞或过载控制时,网络拒绝该UE的正常优先级的接入请求的问题。该方法包括:移动管理网元接收UE发送的第一请求,第一请求中包括第一优先级指示信息,第一优先级指示信息用于标识第一请求的优先级;根据第一请求的接收时刻和第一优先级指示信息,以及对应于UE的时间指示信息及时间指示信息对应的第二优先级指示信息,确定是否对第一请求进行拥塞或过载控制。

Description

一种拥塞控制的方法、 设备及系统 技术领域
本发明涉及通信领域, 尤其涉及一种拥塞控制的方法、 设备及系统。 背景技术
设备类通信 (Machine Type Communication, 简称 MTC ) 应用通常 会使用大量的用户设备 ( User Equipment, 简称 UE ) 。 这些大量的 UE 接入网络时, 网络 (可以为移动管理网元和 /或网关设备) 可能会出现拥 塞和过载现象, 为了保证网络正常运行, 需进行拥塞或过载控制, 例如: UE接入网络时, 网络可以拒绝该 UE的接入请求。 目前的方法为: 当网 络拒绝 UE的接入请求时, 可以保存一个时间指示信息(back-off timer ) , 网络在该时间指示信息所指示的时间范围内会拒绝来自该 UE 的接入请 求。 此外, 网络拒绝 UE的接入请求时, 将该时间指示信息提供给 UE, UE在该时间指示信息所指示的时间范围内不接入网络。 与手机类的 UE相比, 用于 MTC应用的 UE接入网络时主要进行业 务数据的传输, 在接入延迟方面具备更多的容忍度, 因此, 这类 UE可以 配置为低优先级, 配置为低优先级的 UE接入网络时, 接入请求消息中会 包含低优先级的指示信息, 因此, 网络可以识别出该接入请求为低优先 级。 如果网络执行拥塞或过载控制, 在对正常优先级的接入请求进行拥 塞或过载控制前, 首先对低优先级的接入请求进行拥塞或过载控制。
然而, 目前当网络只对低优先级的接入请求进行拥塞或过载控制时, 支持 双优先级 (既支持低优先级又支持正常优先级) 的 UE向网络发送低优先 级的接入请求时, 网络拒绝该 UE的低优先级的接入请求并保存一个时间 指示信息; 在该时间指示信息指示的时间范围内, 支持双优先级的该 UE 可能会向网络发送正常优先级的接入请求, 此时, 网络将拒绝该 UE的正 常优先级的接入请求。
发明内容
本发明的实施例提供一种拥塞控制的方法、 设备及系统, 可解决在 对 UE的低优先级的接入请求进行拥塞或过载控制时, 网络拒绝该 UE的 正常优先级的接入请求的问题。
为达到上述目的, 本发明的实施例采用如下技术方案:
一方面, 本发明实施例提供了一种拥塞控制的方法, 该方法包括: 移动管理网元接收用户设备 ( User Equipment, UE ) 发送的第一请 求, 所述第一请求中包括第一优先级指示信息, 其中, 所述第一优先级 指示信息用于标识所述第一请求的优先级;
根据接收到所述第一请求的接收时刻和所述第一优先级指示信息, 以及对应于所述 UE 的时间指示信息及所述时间指示信息对应的第二优 先级指示信息, 确定是否对所述第一请求进行拥塞或过载控制。
在第一方面的第一种可能的实现方式中, 当所述接收时刻在所述时 间指示信息所指示的时间范围内, 并且所述第一优先级指示信息指示的 优先级低于或等于所述第二优先级指示信息指示的优先级时, 确定对所 述第一请求进行拥塞或过载控制。 在第一方面的第二种可能的实现方式中, 当所述接收时刻在所述时 间指示信息所指示的时间范围内, 并且所述第一优先级指示信息指示的 优先级高于所述第二优先级指示信息指示的优先级时, 确定对所述第一 请求进行拥塞或过载控制; 或者,
当所述接收时刻在所述时间指示信, 所指示的时间范围外时, 确定 对所述第一请求进行拥塞或过载控制。
在第一方面的第三种可能的实现方式中, 当所述接收时刻在所述时 间指示信息所指示的时间范围内, 并且所述第一优先级指示信息指示的 优先级高于所述第二优先级指示信息指示的优先级时, 确定对所述第一 请求不进行拥塞或过载控制; 或者,
当所述接收时刻在所述时间指示信, 所指示的时间范围外时, 确定 对所述第一请求不进行拥塞或过载控制。
结合第一方面的第二种可能的实现方式, 在第四种可能的实现方式 中, 所述方法还包括:
修改所述时间指示信息为新指定的时间指示信息, 修改所述第二优 先级指示信息, 使得所述第二优先级指示信息指示的优先级与所述第一 优先级指示信息指示的优先级相同。
在第一方面的第五种可能的实现方式中, 所述方法还包括: 所述移 动性管理网元初始设置所述时间指示信息及所述第二优先级指示信息。 结合第一方面的第五种可能的实现方式, 在第六种可能的实现方式 中, 可以为: 在拒绝所述 UE的第二请求后, 初始设置所述时间指示信息 和所述第二优先级指示信息, 使得所述第二优先级指示信息指示的优先 级与所述第二请求的优先级相同。
结合第一方面及第一方面的上述六种可能的实现方式, 在第七种可 能的实现方式中, 所述第一请求为移动管理请求; 或者, 所述第一请求 为会话管理请求, 所述时间指示信息为对应于所述 UE和所述 UE选择的 接入点名称 (Acess Point Name, APN ) 的时间指示信息。 结合第一方面及第一方面的上述七种可能的实现方式, 在第八种可 能的实现方式中, 所述对应于所述 UE的时间指示信息, 及所述第二优先 级指示信息, 被保存在所述移动管理网元中。
第二方面, 本发明实施例提供了一种拥塞控制的方法, 还方法包括: 当用户设备 UE 的低优先级接入请求受到拥塞或过载控制时, 移动 管理网元接收所述 U E发送的具有正常优先级的第一请求; 根据所述第一请求, 所述移动管理网元向所述网关设备发送会话管 理消息;
所述会话管理消息中包括用于指示在所述 UE 的低优先级接入请求 受到拥塞或过载控制时为所述 UE分配承载的标识信息;以便于所述网关 设备在为所述 UE 分配的承载的上下文中保存用于指示所述承载是在所 述 UE 的低优先级的接入请求受到拥塞或过载控制时分配的承载的标识 信息。
在第二方面的第一种可能的实现方式中, 在产生的所述承载的计费 数据记录中保存用于指示所述承载是在所述 UE 的低优先级的接入请求 受到拥塞或过载控制时分配的承载的标识信息。
结合第二方面或第二方面的第一种可能的实现方式, 在第二种可能 的实现方式中,所述移动管理网元接收所述 UE发送的具有正常优先级的 第一接入请求, 包括: 在所述移动管理网元通知无线接入网络对所述 UE 的低优先级的接入请求进行扩展接入控制 EAB后, 所述移动管理网元接 收所述 UE发送的所述第一接入请求。 在第二方面的第三种可能的实现方式中, 接收所述第一请求的时刻 在保存的对应于所述 UE 的时间指示信息所指示的时间范围内, 且所述 UE 的第一请求的优先级高于与所述时间指示信, 对应的优先级指示信 息指示的优先级。
第三方面, 本发明实施例提供了一种拥塞控制的方法, 该方法包括: 用户设备 UE确定低优先级的接入请求受到拥塞或过载控制; 所述 UE 向移动管理网元发送第一请求, 所述第一请求中包括低优 先级的接入请求受到拥塞或过载控制时请求接入的指示信息; 以使得所 述移动管理网元和网关设备为所述 U E分配承载,且在所述承载的上下文 中保存用于标识所述承载为所述 UE 的低优先级的接入请求受到拥塞或 过载控制时分配的承载的标识信息。
在第三方面的第一种可能的实现方式中, 所述第一请求中还包括: 优先级指示信息, 所述优先级指示信息用于标识所述第一请求的优先级; 其中, 所述第一请求的优先级为正常优先级。
结合第三方面或第三方面的第一种可能的实现方式, 在第二种可能 的实现方式中, 所述确定低优先级的接入请求受到拥塞或过载控制, 包 括:
发送的所述低优先级的接入请求被所述移动管理网元拒绝, 所述移 动管理网元在接入请求响应消息中携带针对所述 UE的时间指示信息,所 述 UE根据该时间指示信息启动定时器, 在该定时器运行期间, 不能发送 所述低优先级的接入请求; 或
从无线通信网络接收到对所述低优先级的接入请求启用 E AB的指示 信息; 或
发送的低优先级的无线资源控制( Radio Resource Control, RRC )连 接请求消息被无线通信网络拒绝, 所述无线通信网络在 RRC连接响应消 息中携带针对所述 UE的时间指示信息, 所述 UE根据该时间指示信息启 动定时器, 在该定时器运行时所述 UE不能发送所述低优先级的 RRC连 接请求。 第四方面, 本发明实施例提供了一种拥塞控制的方法, 该方法包括: 网关设备接收移动管理网元发送的会话管理消息, 所述会话管理消 息包括用于指示当所述 UE 的低优先级接入请求受到拥塞或过载控制时 为所述 UE分配承载的标识信息; 为所述 UE 分配承载, 并在所述承载的上下文中保存用于指示所述 承载为当所述 UE 的低优先级接入请求受到拥塞或过载控制时分配的承 载的标识信息;
向所述移动管理网元发送会话管理响应消息, 所述会话管理响应消 息中携带已为所述 UE分配所述承载的指示信息。
在第四方面的第一种可能的实现方式中, 所述方法还包括: 在产生 的所述承载的计费数据记录中保存用于指示所述承载为当所述 UE 的低 优先级接入请求受到拥塞或过载控制时为所述 UE 分配的承载的标识信 息。
第五方面, 本发明实施例提供了一种移动管理网元, 该移动管理网 元包括:
接收单元, 用于接收用户设备 UE发送的第一请求, 所述第一请求 中包括第一优先级指示信息; 其中, 所述第一优先级指示信息用于标识 所述第一请求的优先级;
处理单元, 用于根据所述接收单元接收到所述第一请求的接收时刻 和所述第一优先级指示信息,以及对应于所述 U E的时间指示信息及所述 时间指示信息对应的第二优先级指示信息, 确定是否对所述第一请求进 行拥塞或过载控制。
在第五方面的第一种可能的实现方式中, 所述处理单元, 具体用于 当所述接收单元接收到所述第一请求的接收时刻在所述时间指示信, ¾所 指示的时间范围内, 并且所述第一优先级指示信息指示的优先级低于或 等于所述第二优先级指示信息指示的优先级时; 确定对所述第一请求进 行拥塞或过载控制。
在第五方面的第二种可能的实现方式中, 所述处理单元, 具体用于 当所述接收单元接收到所述第一请求的接收时刻在所述时间指示信, ¾所 指示的时间范围内, 并且所述第一优先级指示信息指示的优先级高于所 述第二优先级指示信息指示的优先级时; 确定对所述第一请求进行拥塞 或过载控制; 或者, 当所述接收单元接收到所述第一请求的接收时刻在所述时间指示信 息所指示的时间范围外时, 确定对所述第一请求进行拥塞或过载控制。
在第五方面的第三种可能的实现方式中, 所述处理单元, 所述处理 单元, 具体用于当所述接收单元接收到所述第一请求的接收时刻在所述 时间指示信息所指示的时间范围内, 并且所述第一优先级指示信息指示 的优先级高于所述第二优先级指示信息指示的优先级时; 确定对所述第 一请求不进行拥塞或过载控制; 或者,
当所述接收单元接收到所述第一请求的接收时刻在所述时间指示信 息所指示的时间范围外时, 确定对所述第一请求不进行拥塞或过载控制。 结合第五方面第二种可能的实现方式,在第四种可能的实现方式中, 所述处理单元, 还用于修改所述时间指示信息为新指定的时间指示信息, 修改所述第二优先级指示信息, 使得所述第二优先级指示信息指示的优 先级与所述第一优先级指示信息指示的优先级相同。
在第五方面的第五种可能的实现方式中, 所述处理单元, 还用于初 始设置所述时间指示信息及所述第二优先级指示信息。 结合第五方面的第五种可能的实现方式, 在第六种可能的实现方式 中, 所述处理单元, 具体用于在拒绝所述 UE的第二请求后, 初始设置所 述时间指示信息和所述第二优先级指示信息, 使得所述第二优先级指示 信息指示的优先级与所述第二请求的优先级相同。 结合第五方面及第五方面的上述六种可能的实现方式, 在第七种可 能的实现方式中, 所述移动管理网元还包括:
存储单元, 用于存储所述对应于所述 UE 的时间指示信息及所述第 二优先级指示信息。
第六方面, 本发明实施例提供了一种移动管理网元, 该移动管理网 元包括: 接收单元, 用于当用户设备 UE 的低优先级接入请求受到拥塞或过 载控制时, 接收所述 UE发送的具有正常优先级的第一请求; 生成单元, 用于根据所述接收单元接收的所述第一请求生成会话管 理消息,所述会话管理消息中包括用于指示在所述 UE的低优先级接入请 求受到拥塞或过载控制时为所述 U E分配承载的标识信息; 发送单元, 用于将所述生成单元生成的所述会话管理消息发送到所 述网关设备;以便于所述网关设备在为所述 UE分配的承载的上下文中保 存用于指示所述承载是在所述 UE 的低优先级的接入请求受到拥塞或过 载控制时分配的承载的标识信息。
在第六方面的第一种可能的实现方式中,所述移动管理网元还包括, 处理单元, 用于在产生的所述承载的计费数据记录中保存用于指示所述 承载是在所述 UE 的低优先级的接入请求受到拥塞或过载控制时分配的 载的标识信息。 结合第六方面或第六方面的第一种可能的实现方式, 在第二种可能 的实现方式中, 所述接收单元, 具体用于当所述 UE的低优先级接入请求 受到拥塞或过载控制时, 所述移动管理网元通知无线接入网络对所述 UE 的低优先级的接入请求进行扩展接入控制 EAB后, 接收所述 UE发送的 所述第一请求。
在第六方面的第三种可能的实现方式中, 所述接收单元, 具体用于 当所述 U E的低优先级接入请求受到拥塞或过载控制时,接收所述第一请 求的时刻在保存的对应于所述 UE的时间指示信息所指示的时间范围内, 且所述 UE 的第一请求的优先级高于与所述时间指示信息对应的优先级 指示信息指示的优先级。
第七方面, 本发明实施例提供了一种 UE, 该 UE包括: 处理单元, 用于确定低优先级的接入请求受到拥塞或过载控制; 生成单元, 用于当所述处理单元确定所述低优先级的接入请求受到 拥塞或过载控制时, 生成第一请求, 所述第一请求中包括低优先级的接 入请求受到拥塞或过载控制时请求接入的指示信息;
发送单元, 用于将所述生成单元生成的所述第一请求发送到移动管 理网元; 以使得所述移动管理网元和网关设备为所述 UE分配承载, 且在 所述承载的上下文中保存用于标识所述承载为所述 UE 的低优先级的接 入请求受到拥塞或过载控制时分配的所述承载的标识信息。
在第七方面的第一种可能的实现方式中, 所述生成单元生成的第一 请求中还包括优先级指示信息, 所述优先级指示信息用于标识所述第一 请求的优先级; 其中, 所述第一请求的优先级为正常优先级。 结合第七方面或第七方面的第一种可能的实现方式, 在第二种可能 的实现方式中, 所述处理单元, 具体用于根据发送的所述低优先级的接 入请求被所述移动管理网元拒绝, 所述移动管理网元在接入请求响应消 息中携带针对所述 UE的时间指示信息, 所述 UE根据该时间指示信息启 动定时器, 在该定时器运行期间, 不能发送所述低优先级的接入请求; 或
从无线通信网络接收到对所述低优先级的接入请求启用 E AB的指示 信息; 或
发送的低优先级的 RRC连接请求消息被无线通信网络拒绝, 所述无 线通信网络在 RRC连接响应消息中携带针对所述 UE的时间指示信息, 所述 UE根据该时间指示信息启动定时器, 在该定时器运行时所述 UE不 能发送所述低优先级的 RRC连接请求;
确定所述低优先级的接入请求受到拥塞或过载控制。
第八方面, 本发明实施例提供了一种网关设备, 该网关设备包括: 接收单元, 用于接收移动管理网元发送的会话管理消息, 所述会话 管理消息包括用于指示当所述 UE 的低优先级接入请求受到拥塞或过载 控制时为所述 UE分配承载的标识信息;
处理单元, 用于根据所述接收单元接收的所述会话管理消息, 为所 述 U E分配承载,并在所述承载的上下文中保存用于指示所述承载为当所 述 U E的低优先级接入请求受到拥塞或过载控制时分配承载的标识信息; 生成单元, 用于根据所述处理单元的处理结果, 生成会话管理响应 消息,所述会话管理响应消息中携带已为所述 UE分配所述承载的指示信 息;
发送单元, 用于将所述生成单元生成的所述第一响应消息发送到所 述移动管理网元。
在第八方面的第一种可能的实现方式中, 所述处理单元, 还用于在 产生的所述承载的计费数据记录中保存用于指示所述承载为当所述 UE 的低优先级的接入请求受到拥塞或过载控制时为所述 UE 分配的所述承 载的标识信息。
第九方面, 本发明实施例提供了一种移动管理网元, 该移动管理网 元包括:
接收模块, 用于接收用户设备 UE发送的第一请求, 所述第一请求 中包括第一优先级指示信息; 其中, 所述第一优先级指示信息用于标识 所述第一请求的优先级; 处理器, 用于根据所述接收模块接收到所述第一请求的接收时刻和 所述第一优先级指示信息,以及对应于所述 UE的时间指示信息及与所述 时间指示信息对应的所述第二优先级指示信息, 确定是否对所述第一请 求进行拥塞或过载控制。 在第九方面的第一种可能的实现方式中, 所述处理器, 具体用于当 所述接收模块接收到所述第一请求的接收时刻在所述时间指示信, 所指 示的时间范围内, 并且所述第一优先级指示信息指示的优先级低于或等 于所述第二优先级指示信息指示的优先级时; 确定对所述第一请求进行 拥塞或过载控制。 在第九方面的第二种可能的实现方式中, 所述处理器, 所述处理器, 具体用于当所述接收模块接收到所述第一请求的接收时刻在所述时间指 示信息所指示的时间范围内, 并且所述第一优先级指示信息指示的优先 级高于所述第二优先级指示信息指示的优先级时; 确定对所述第一请求 进行拥塞或过载控制; 或者,
当所述接收模块接收到所述第一请求的接收时刻在所述时间指示信 息所指示的时间范围外时, 确定对所述第一请求进行拥塞或过载控制。 在第九方面的第三种可能的实现方式中, 所述处理器, 所述处理器, 具体用于当所述接收模块接收到所述第一请求的接收时刻在所述时间指 示信息所指示的时间范围内, 并且所述第一优先级指示信息指示的优先 级高于所述第二优先级指示信息指示的优先级时; 确定对所述第一请求 不进行拥塞或过载控制; 或者, 当所述接收模块接收到所述第一请求的所述接收时刻在所述时间指 示信息所指示的时间范围外时, 确定对所述第一请求不进行拥塞或过载 控制。
结合第九方面的第二种可能的实现方式, 在第四种可能的实现方式 中, 所述处理器, 还用于修改所述时间指示信息为新指定的时间指示信 息, 修改所述第二优先级指示信息, 使得所述第二优先级指示信息指示 的优先级与所述第一优先级指示信息指示的优先级相同。
在第九方面的第五种可能的实现方式中, 所述处理器, 还用于初始 设置所述时间指示信息及所述第二优先级指示信息。 结合第九方面的第五种可能的实现方式, 在第六种可能的实现方式 中, 所述处理器, 具体用于在拒绝所述 UE的第二请求后, 初始设置所述 时间指示信息和所述第二优先级指示信息, 使得所述第二优先级指示信 息指示的优先级与所述第二请求的优先级相同。
结合第九方面及第九方面的前六种可能的实现方式, 在第七种可能 的实现方式中, 所述移动管理网元还包括:
寄存器, 用于存储所述对应于所述 UE 的时间指示信息及与所述第 二优先级指示信息。
第十方面, 本发明实施例提供了一种移动管理网元, 该移动管理网 元包括:
接收模块, 用于当用户设备 UE 的低优先级接入请求受到拥塞或过 载控制时, 接收所述 UE发送的具有正常优先级的第一接入请求;
处理器,用于根据接收模块接收的所述第一请求生成会话管理消息, 所述会话管理消息中包括用于指示在所述 UE 的低优先级接入请求受到 拥塞或过载控制时为所述 UE分配承载的标识信息; 发送模块, 用于将所述处理器生成的所述会话管理消息发送到所述 网关设备;以便于所述网关设备在为所述 U E分配的承载的上下文中保存 用于指示所述承载是在所述 UE 的低优先级的接入请求受到拥塞或过载 控制时分配的承载的标识信息。 在第十方面的第一种可能的实现方式中, 所述处理器, 还用于在产 生的所述承载的计费数据记录中保存用于指示所述承载是在所述 UE 的 低优先级的接入请求受到拥塞或过载控制时分配的承载的标识信息。
结合第十方面或第十方面的第一种可能的实现方式, 在第二种可能 的实现方式中, 所述接收模块, 具体用于当用户设备 UE的低优先级接入 请求受到拥塞或过载控制时, 所述移动管理网元通知无线接入网络对所 述 UE的低优先级的接入请求进行扩展接入控制 EAB后, 接收所述 UE 发送的所述第一请求。
在第十方面的第三种可能的实现方式中, 所述接收模块, 具体用于 当所述 U E的低优先级接入请求受到拥塞或过载控制时,接收所述第一请 求的时刻在保存的对应于所述 UE的时间指示信息所指示的时间范围内, 且所述 UE 的第一请求的优先级高于与所述时间指示信息对应的优先级 指示信息指示的优先级。
第十一方面, 本发明实施例提供了一种 UE, 该 UE包括: 处理器, 用于确定低优先级的接入请求受到拥塞或过载控制, 并生 成第一请求, 所述第一请求中包括低优先级的接入请求受到拥塞或过载 控制时请求接入的指示信息; 发送模块, 用于将所述处理器生成的所述第一请求发送到移动管理 网元; 以使得所述移动管理网元和网关设备为用户设备 UE分配承载, 且 在所述承载的上下文中保存用于标识所述承载为所述 UE 的低优先级的 接入请求受到拥塞或过载控制时分配的承载的标识信息。
在第十一方面的第一种可能的实现方式中, 所述处理器生成的第一 请求中还包括: 优先级指示信息, 所述优先级指示信息用于标识所述第 一请求的优先级; 其中, 所述第一请求的优先级为正常优先级。 结合第十一方面或第十一方面的第一种可能的实现方式, 在第二种 可能的实现方式中, 所述处理器, 具体用于根据发送的所述低优先级的 接入请求被所述移动管理网元拒绝, 所述移动管理网元在接入请求响应 消息中携带针对所述 UE的时间指示信息, 所述 UE根据该时间指示信息 启动定时器, 在该定时器运行期间, 不能发送所述低优先级的接入请求; 或 从无线通信网络接收到对所述低优先级的接入请求启用 E AB的指示 信息; 或
发送的低优先级的 RRC连接请求消息被无线通信网络拒绝, 所述无 线通信网络在 RRC连接响应消息中携带针对所述 UE的时间指示信息, 所述 UE根据该时间指示信息启动定时器, 在该定时器运行时所述 UE不 能发送所述低优先级的 RRC连接请求; 确定所述低优先级的接入请求受到拥塞或过载控制, 并生成第一请 求, 所述第一请求中包括低优先级的接入请求受到拥塞或过载控制时请 求接入的指示信息。
第十二方面, 本发明实施例提供了一种网关设备, 该网关设备包括: 接收模块, 用于接收移动管理网元发送的会话管理消息, 所述会话 管理消息中包括用于指示当所述 UE 的低优先级接入请求受到拥塞或过 载控制时为所述 UE分配承载的标识信息; 处理器, 用于根据所述接收模块接收的所述会话管理消息, 为所述 UE分配所述承载, 并在所述承载的上下文中保存用于指示所述承载为当 所述 UE 的低优先级的接入请求受到拥塞或过载控制时分配所述承载的 标识信息; 并生成会话管理响应消息, 所述会话管理响应消息中携带已 为所述 UE分配所述承载的指示信息; 发送模块, 用于将所述处理器生成的所述第一响应消息发送到所述 移动管理网元。
在第十二方面的第一种可能的实现方式中, 所述处理器, 还用于在 产生的所述承载的计费数据记录中保存用于指示所述承载为当所述 UE 的低优先级的接入请求受到拥塞或过载控制时为所述 UE 分配的所述承 载的标识信息。
第十三方面, 本发明实施例提供了一种拥塞控制的系统, 该系统包 括: 第五方面或第五方面任一种可能实现方式的移动管理网元, 或第九 方面或第九方面任一种可能实现方式的移动管理网元。
第十四方面, 本发明实施例提供了一种拥塞控制的系统, 该系统包 括: 第六方面或第六方面任一种可能实现方式的移动管理网元、 第七方 面或第七方面任一种可能实现方式的 UE、 第八方面或第八方面任一种可 能实现方式的网关设备; 或
第十方面或第十方面任一种可能实现方式的移动管理网元、 第十一 方面或第十一方面任一种可能实现方式的 UE、 第十二方面或第十二方面 任一种可能实现方式的网关设备。
本发明实施例提供了一种拥塞控制的方法、 设备及系统, 移动管理网元根 据所述 UE的第一请求, 以及对应于所述 UE的时间指示信息及所述时间 指示信息对应的第二优先级指示信息, 当满足一定条件时, 可根据网络状 况判断是否对该 UE的请求进行拥塞或过载控制; 否则拒绝该 UE的请求。 由此, 可解决网络只对低优先级的接入请求进行拥塞或过载控制时, 移动 管理网元会拒绝支持双优先级的 UE 的正常接入请求的问题。 此外, 当移 动管理网元确定 UE是在低优先级的接入请求受到拥塞或过载控制时发起 正常优先级的接入请求时, 向网关设备发送会话管理消息, 使得网关设备 为所述 UE的接入请求分配承载。
附图说明
对实施例或现有技术描述中所需要使用的附图作简单地介绍, 显而易见 地, 下面描述中的附图仅仅是本发明的一些实施例, 对于本领域普通技 术人员来讲, 在不付出创造性劳动的前提下, 还可以根据这些附图获得 其他的附图。 图 1为本发明实施例提供的一种拥塞控制的方法的流程示意图; 图 2为本发明实施例提供的一种拥塞控制的方法的详细的流程示意 图;
图 3为本发明实施例提供的另一种拥塞控制的方法的流程示意图; 图 4 为本发明另一实施例提供的一种拥塞控制的方法的流程示意 图;
图 5为本发明实施例提供的一种移动管理网元的结构示意框图一; 图 6为本发明实施例提供的一种移动管理网元的结构示意框图二; 图 7 为本发明另一实施例提供的一种移动管理网元的结构示意框 图;
图 8为本发明另一实施例提供的一种用户设备的结构示意框图一; 图 9为本发明另一实施例提供的一种用户设备的结构示意框图二; 图 10为本发明另一实施例提供的一种网关设备的结构示意框图; 图 11为本发明实施例提供的一种移动管理网元的结构示意框图一; 图 12为本发明实施例提供的一种移动管理网元的结构示意框图二; 图 13 为本发明另一实施例提供的一种移动管理网元的结构示意框 图;
图 14为本发明另一实施例提供的一种用户设备的结构示意框图; 图 15为本发明另一实施例提供的一种网关设备的结构示意框图。 具体实施方式 下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案 进行清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实 施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术 人员在没有做出创造性劳动前提下所获得的所有其他实施例, 都属于本 发明保护的范围。 本发明实施例提供给了一种拥塞控制的方法, 如图 1 所示, 该方法 包括如下步骤:
S 101、 移动管理网元接收 UE发送的第一请求, 所述第一请求中包 括第一优先级指示信息; 其中, 所述第一优先级指示信息用于标识所述 第一请求的优先级。 在本发明实施例中, 所述 UE 可被配置为支持双优先级, 即, 支持 低优先级和正常优先级的网络接入。所述 UE也可被配置为仅支持低优先 级的接入网络接入。 在本发明所有实施例中, UE发送的第一请求是通过第一请求消息来 体现的, 当所述移动管理网元接收到所述第一请求消息, 所述第一请求 消息中包括第一优先级指示信息时, 移动管理网元对与该第一请求消息 对应的第一请求进行处理。 示例的, 第一优先级指示信息可被封装在设备属性信元 (Device Properties Information Element )中, 其中所述第一请求消息中包括所述设 备属性信元。 例如: 当设备属性信元中的对应的标识位设置为 "移动台 配置为非接入层信令低优先级,, ( "MS is configured for NAS signalling low priority ) " 时, 表示所述 UE的第一请求的优先级为低优先级; 当设 备属性信元中的对应的标识位设置为'移动台不配置为非接入层信令低优 先级,,( "MS is not configured for NAS signalling low priority ) " 时, 表示 所述 UE的第一请求的优先级为正常优先级。 另外, 第一优先级指示信息 中不包括设备属性信元时所述 U E的第一请求的优先级为正常优先级,或 者第一优先级中包括设备属性信元但设备属性信元中不存在标识该请求 的优先级的标识位时所述 U E的第一请求为正常优先级。 所述第一请求可以为移动管理请求, 相应的第一请求消息为移动管 理请求消息, 当为移动管理请求消息时, 可以为: 附着请求 (Attach Request ) 消息, 路由区更新请求 ( Routing Area Update Request ) 消息, 跟踪区更新请求( Tracking Area Update Request )消息,服务请求( Service Request ) 消息 , 扩展服务请求 ( Extened Service Request ) 消息等。
S 102、 移动管理网元根据接收到所述第一请求的接收时刻和所述第 一优先级指示信息,以及对应于所述 UE的时间指示信息及与所述时间指 示信息对应的第二优先级指示信息, 确定是否对所述第一请求进行拥塞 或过载控制。
移动管理网元可以在其保存的该 UE 的上下文中或者用于保存时间 指示信息的表格中保存对应于所述 UE 的时间指示信息及与所述时间指 示信息对应的所述第二优先级指示信息; 但本发明实施例并不限于此, 可以在任何存储器中进行保存。
其中, 移动管理网元在所述 UE发送第一请求以前, 如果对该 UE执 行拥塞或过载控制并拒绝了所述 UE的请求, 则, 移动管理网元可以在其 保存的该 UE的上下文中保存对应于所述 UE的时间指示信息及与该时间 指示信息对应的第二优先级指示信息, 所述时间指示信息为时长或者时 刻。 具体的, 时间指示信息为时长时, 该时间指示信息可以为定时器。 另外, 移动管理网元还可以在一个用于保存时间指示信息的表格中保存 该时间指示信息及与该时间指示信息对应的所述第二优先级指示信息。 在本发明实施例中该类时间指示信息可被称为移动管理时间指示信息。
其中, 移动管理网元在所述 UE发送第一请求以前, 对该 UE执行拥 塞或过载控制包括下述两种情况。
情况一, 移动管理网元没有保存对应于所述 UE的时间指示信息时, 移动管理网元接收到所述 UE的第一请求, 移动管理网元确定对所述 UE 的移动管理请求进行拥塞或过载控制, 则移动管理网元可以在其保存的 该 UE的上下文中保存对应于所述 UE的时间指示信息及与该时间指示信 息对应的第二优先级指示信息, 其中所述时间指示信息对应的第二优先 级指示信, 指示的优先级为所述 UE的第一请求的优先级;
情况二, 移动管理网元根据当前的网络拥塞或过载状况, 确定对低 优先级或正常优先级的第一请求进行拥塞或过载控制, 移动管理网元在 其保存的该 UE的上下文中保存对应于所述 UE的时间指示信息及与该时 间指示信息对应的优先级指示信息, 其中如果移动管理网元确定对低优 先级的第一请求进行拥塞或过载控制, 所述时间指示信息对应的第二优 先级指示信息指示的优先级为低优先级; 如果移动管理网元确定对正常 优先级的移动管理请求进行拥塞或过载控制, 所述时间指示信息对应的 第二优先级指示信息指示的优先级为正常优先级。
在本发明中, 移动管理网元对所述 UE 的接入请求进行拥塞或过载 控制时, 移动管理网元拒绝所述 UE的接入请求, 或者丟弃所述 UE的接 入请求。 移动管理网元对所述 U E的接入请求不进行拥塞或过载控制时, 移动管理网元接受所述 UE的接入请求 示例的, 当移动管理网元对所述 U E的请求进行拥塞或过载控制时, 由移动管理网元指定所述时间指示信息。 具体的, 移动管理网元指定该 时间指示信息所标识的时间范围或一个时间 , 。
当移动管理网元对所述 UE 的请求进行拥塞或过载控制, 并且所述 请求为正常优先级的请求, 则所述第二优先级指示信息指示为正常优先 级。 具体的, 可以将对应所述第二优先级指示信息的标识位设置为 "移 动台不配置为非接入层信令低优先级"; 或者 当移动管理网元对所述 UE 的请求进行拥塞或过载控制, 并且所述 请求为低优先级的请求, 则所述第二优先级指示信息指示为低优先级。 具体的, 可以对应所述第二优先级指示信息的所述标识位设置为 "移动 台配置为非接入层信令低优先级"。 在本发明实施例中, 所述时间指示信息对应的第二优先级指示信息 可以用于表示, 所述时间指示信息是因为移动管理网元对所述第二优先 级指示信, 所标识的优先级的请求进行拥塞或过载控制而保存的。 因此, 所述第二优先级指示信息可以标识出所述时间信 , 被保存的原因。 示例的, 可以使用一个标识位标识所述第二优先级指示信息, 具体 的, 可将所述标识位设置为 "移动台配置为非接入层信令低优先级" , 表示所述时间指示信息是由于对低优先级的请求进行拥塞或过载控制而 保存的; 也可将所述标识位设置为 "移动台不配置为非接入层信令低优 先级,,, 表示在所述时间指示信息是由于正常优先级的请求进行拥塞或过 载控制而保存的。 在本发明实施例中, 所述时间指示信息对应的第二优先级指示信息 也可以是所述时间指示信息被保存的原因指示信息, 所述原因指示信息 用于指示所述时间指示信息是因为移动管理网元对所述第二优先级为所 述原因指示信息指示的优先级的请求进行拥塞或过载控制而保存的。
示例的, 移动管理网元可以使用一个标识位指示所述时间指示信息 对应的所述原因指示信息, 当所述标识位设置为 "因低优先级的接入请 求而保存的时间,, ( "Time is stored due to low priority request ) " 时, 表 示所述时间指示信息是因为移动管理网元对低优先级的请求进行拥塞或 过载控制而保存的, 这种情况下, 所述时间指示信息对应的第二优先级 指示信息所指示的优先级为低优先级; 当所述标识位设置为 "因正常优 先级的接入请求而保存的时间" ( "Time is stored due to normal priority request ) " 时, 表示所述时间指示信息是因为移动管理网元对正常优先 级的请求进行拥塞或过载控制而保存的, 这种情况下, 所述时间指示信 息对应的第二优先级指示信息所指示的优先级为正常优先级。 需要说明的是, 在发明实施例中, 并不限于上述的表示方式, 也可 以采用其它的表示方式。 此外, 当所述移动管理网元接收到所述第一请求后, 移动管理网元 可以通过所述第一优先级指示信息识别出所述 U E的第一请求的优先级, 所述第一优先级为低优先级或者正常优先级。
下面分以下几种情况分别进行说明是否对所述 UE 的本次请求进行 拥塞或过载控制的过程。
第一种情况:
当移动管理网元接收所述第一请求的时刻在所述时间指示信息所指 示的时间范围内, 并且所述第一优先级指示信息指示的优先级高于所述 第二优先级指示信息指示的优先级时, 确定对所述第一请求进行拥塞或 过载控制。
在本发明所有实施例中, 当所述时间指示信息为定时器时, 移动管 理网元如果接收到所述第一请求的时刻在所述定时器未超时时, 则表示 接收到所述第一请求的时刻在所述时间指示信, 所指示的时间范围内。 当所述时间指示信息为时刻时, 如果接收到所述第一请求的时刻在所述 时间指示信, 所指示的时刻以前, 则表示接收到所述第一请求的时刻在 所述时间指示信息所指示的时间范围内。 可选的, 当移动管理网元依据移动管理网元的负载状况以及移动管 理网元的拥塞或过载控制策略等确定对所述 UE 的第一请求进行拥塞或 过载控制时, 移动管理网元可以通过第一请求响应拒绝该 UE 的第一请 求,具体的可以为移动管理网元发送第一请求响应消息拒绝该 UE的第一 请求。
示例的, 移动管理网元确定对所述 UE 的第一请求进行拥塞或过载 控制的情况可以为, 移动管理网元根据当前网络的拥塞或过载情况或拥 塞或过载控制策略确定对所述 UE的第一请求进行拥塞控制。 例如, 移动 管理网元首先只对低优先级的请求进行拥塞或过载控制, 但网络拥塞或 过载情况进一步加剧, 则移动管理网元确定对正常优先级的请求也进行 拥塞或过载控制; 也就是说, 当移动管理网元接收所述 UE的第一请求的 时刻在所述移动管理网元保存的所述 UE的时间指示信息的时间范围内, 且与所述时间指示信息对应的第二优先级指示信息为低优先级, 而所述 UE 发送的第一请求中携带的所述第一优先级指示信息指示的优先级正 常优先级, 在这样情况下, 移动管理网元仍可对所述 UE的正常优先级的 第一请求进行拥塞或过载控制。
其中, 所述第一请求响应消息可以为移动管理请求响应消息, 当为 移动管理请求响应消息时, 可以为: 附着拒绝 (Attach Reject ) 消息, 路 由区更新拒绝 ( Routing Area Update Reject ) 消息, 3艮踪区更新拒绝 ( Tracking Area Update Reject ) 消息, 月良务请求拒绝 ( Service Request Reject ) 消息等。
进一步地, 移动管理网元修改所述时间指示信息为新指定的时间指 示信息, 修改所述第二优先级指示信息, 使得所述第二优先级指示信息 指示的优先级与所述第一优先级指示信息指示的优先级相同。
示例的, 若移动管理网元中有对应于所述 UE 的时间指示信息, 及 与该时间指示信息对应的第二优先级指示信息, 例如该第二优先级指示 信息指示的优先级例如为低优先级, 且移动管理网元接收到该第一请求 的时刻在所述时间指示信息所指示的时间范围内, 并且所述第一优先级 指示信息指示的优先级例如为正常优先级, 即所述第一优先级指示信息 指示的优先级高于所述第二优先级指示信息指示的优先级。 此时, 若移 动管理网元根据网络状况确定对所述 UE 的第一请求进行拥塞或过载控 制, 则移动管理网元拒绝该 UE的第一请求, 并修改所述时间指示信息为 新指定的时间指示信息, 修改所述第二优先级指示信息, 使得所述第二 优先级指示信息指示的优先级与所述第一优先级指示信息指示的优先级 相同。
其中, 所述第二优先级指示信息还可以通过一个标识位指示所述新 指定的时间指示信, 对应的原因指示信息, 该标识位在修改前被设置为
"因低优先级的接入请求而保存的时间" , 即该标识位指示低优先级; 修改后该标识位被设置为 "因正常优先级的接入请求而保存的时间" , 即该标识位指示正常优先级。 在本发明实施例中, 对于所述 UE 的第一请求被拒绝, 移动管理网 元修改所述时间指示信息为新指定的时间指示信息, 修改所述第二优先 级指示信息, 使得所述第二优先级指示信息指示的优先级与所述第一优 先级指示信息指示的优先级相同。 但本发明实施例并不限于此, 还可以 间指示信息和所述时间指示信息对应的所述第二优先级指示信息, 移动 管理网元保存新指定的所述时间指示信息, 以及所述新指定的时间指示 信息对应的第二优先级指示信息, 且所述第二优先级指示信, 指示的优 先级与所述第一优先级指示信息指示的优先级相同。 其中, 所述第二优先级指示信息还可以通过一个标识位来指示所述 时间指示信息对应的所述原因指示信息, 例如, 若所述 UE的第一请求的 优先级为低优先级, 则该标识位可被设置为 "因低优先级的接入请求而 保存的时间" , 即该标识位指示低优先级; 若所述 UE的第一请求为正常 优先级时, 则该标识位可被设置为 "因正常优先级的接入请求而保存的 时间" , 即该标识位指示正常优先级。
第二种情况: 当移动管理网元接收所述第一请求的时刻在所述时间指示信息所指 示的时间范围外时, 确定对所述第一请求进行拥塞或过载控制。 可选的, 当移动管理网元依据移动管理网元的负载状况以及移动管 理网元的拥塞或过载控制策略等确定是对所述 UE 的第一请求进行拥塞 或过载控制时,移动管理网元通过第一请求响应消息拒绝该 UE的第一请 求。
进一步地, 移动管理网元修改所述时间指示信息为新指定的时间指 示信息, 修改所述第二优先级指示信息, 使得所述第二优先级指示信息 指示的优先级与所述第一优先级指示信息指示的优先级相同。 示例的, 若移动管理网元中存在对应于所述 UE 的时间指示信息及 与该时间指示信息对应的第二优先级指示信息; 且移动管理网元接收到 该第一请求的时刻在所述时间指示信息所指示的时间范围外; 此时, 若 移动管理网元根据网络状况确定对所述 UE 的第一请求进行拥塞或过载 控制, 则移动管理网元拒绝该 UE的第一请求, 并修改所述时间指示信息 为新指定的时间指示信息, 修改所述第二优先级指示信息, 使得所述第 二优先级指示信息指示的优先级与所述第一优先级指示信息指示的优先 级相同。
此处需要说明的是, 在第二种情况中, 所述第二优先级指示信息可 以为低优先级或正常优先级, 第一请求中携带的第一优先级指示信息可 以为低优先级或正常优先级。
第三种情况: 当移动管理网元接收所述第一请求的时刻在所述时间指示信息所指 示的时间范围内, 并且所述第一优先级指示信息指示的优先级高于所述 第二优先级指示信息指示的优先级时, 确定不对所述第一请求进行拥塞 或过载控制, 移动管理网元接受所述第一请求。
可选的, 当移动管理网元依据移动管理网元的负载状况以及移动管 理网元的拥塞或过载控制策略等确定不对所述 UE 的第一请求进行拥塞 或过载控制时,移动管理网元可以通过第一请求响应接受该 UE的第一请 求, 具体的可以为, 移动管理网元可以通过发送第一请求响应消息接受 该 UE的第一请求。 示例的, 移动管理网元确定不对所述 UE 的第一请求进行拥塞或过 载控制的情况可以为, 移动管理网元根据当前网络的拥塞或过载情况或 拥塞或过载控制策略确定不对所述 UE的第一请求进行拥塞控制。 例如, 移动管理网元首先只对低优先级的请求进行拥塞或过载控制, 但网络拥 塞或过载情况没有进一步加剧, 则移动管理网元仍只对低优先级的请求 进行拥塞或过载控制; 也就是说, 当移动管理网元接收所述 UE的第一请 求的时刻在所述移动管理网元保存的所述 UE 的时间指示信息的时间范 围内, 且与所述时间指示信息对应的第二优先级指示信息为低优先级, 而所述 UE 发送的第一请求中携带的所述第一优先级指示信息指示的优 先级为正常优先级,即所述 UE的第一请求中携带的所述第一优先级指示 信息指示的优先级高于所述时间指示信息对应的第二优先级指示信, ¾指 示的优先级, 在这样情况下, 移动管理网元可不对所述 UE的正常优先级 的第一请求进行拥塞或过载控制。
进一步地, 所述方法进一步包括: 接受所述 UE的第一请求。 当所述第一请求为移动管理请求时, 移动管理网元按照所述 UE 的 移动管理请求消息的类型, 进行对应的移动管理请求的后续流程的处理。 例如当对应该请求的移动管理请求消息为附着请求消息时, 移动管理网 元会进行 UE的鉴权、 位置更新、 承载的建立等。 当移动管理请求所对应 的流程完成后, 移动管理网元向 UE发送移动管理请求响应消息, 所述移 动管理请求响应消息指示所述 UE的本次请求被接受。移动管理请求响应 消息可以为附着接受 /拒绝 ( Attach Accept/Rej ect ) 消息, 路由区更新接 受 /拒绝 ( Routing Area Update Accept/Reject ) 消息, 跟踪区更新接受 /拒 绝( Tracking Area Update Accept/Reject )消息,服务请求接受 /拒绝( Service Request Accept/Reject ) 消息等。
第四种情况:
当移动管理网元接收所述第一请求的时刻在所述时间指示信息所指 示的时间范围外时, 确定对所述第一请求进行拥塞或过载控制。 可选的, 当移动管理网元依据移动管理网元的负载状况以及移动管 理网元的拥塞或过载控制策略等确定不对所述 UE 的第一请求进行拥塞 或过载控制时,移动管理网元可以通过第一请求响应消息接受该 UE的第 一请求。
示例的, 移动管理网元确定不对所述 UE 的第一请求进行拥塞或过 载控制的情况可以为, 移动管理网元根据当前网络的拥塞或过载情况或 拥塞或过载控制策略确定不对所述 UE的第一请求进行拥塞控制。 例如, 移动管理网元首先对低优先级或正常优先级的请求进行拥塞或过载控 制, 但网络拥塞或过载情况没有进一步加剧, 若移动管理网元接收所述 UE的第一请求的时刻在所述移动管理网元保存的所述 UE的时间指示信 息的时间范围外; 也就是说, 当移动管理网元接收所述 UE的第一请求的 时刻在所述移动管理网元保存的所述 UE 的时间指示信息的时间范围外 时,移动管理网元可不对所述 UE的正常优先级的第一请求进行拥塞或过 载控制。
进一步地, 所述方法进一步包括: 接受所述 UE的第一请求。
第五种情况: 当所述接收时刻在所述时间指示信, 所指示的时间范 围内, 并且所述第一优先级指示信息指示的优先级低于或等于所述第二 优先级指示信息指示的优先级时, 确定对所述第一请求进行拥塞或过载 控制。
示例的, 若移动管理网元中有对应于所述 UE 的时间指示信息, 及 与该时间指示信息对应的第二优先级指示信息, 例如为正常优先级; 且 移动管理网元接收到该第一请求的时刻在所述时间指示信, ¾所指示的时 间范围内, 并且所述第一请求中携带的第一优先级为指示信息指示为低 优先级, 即所述第一优先级指示信息指示的优先级低于所述第二优先级 指示信息指示的优先级。 此时, 移动管理网元拒绝该 UE的第一请求。
另一示例, 若移动管理网元中有对应于所述 UE 的时间指示信息, 及与该时间指示信息对应的第二优先级指示信息, 例如为正常优先级; 且移动管理网元接收到该第一请求的时刻在所述时间指示信息所指示的 时间范围内, 并且所述第一请求中携带的第一优先级指示信息指示为正 常优先级, 即所述第一优先级指示信息指示的优先级等于所述第二优先 级指示信息指示的优先级。 此时, 移动管理网元拒绝该 UE的第一请求。
另一示例, 若移动管理网元中有对应于所述 UE 的时间指示信息, 及与该时间指示信息对应的第二优先级指示信息, 例如为低优先级; 且 移动管理网元接收到该第一请求的时刻在所述时间指示信, 所指示的时 间范围内, 并且所述第一请求中携带的第一优先级为低优先级, 即所述 第一优先级指示信息指示的优先级等于所述第二优先级指示信息指示的 优先级。 此时, 移动管理网元拒绝该 UE的第一请求。 需要说明的是, 在本发明实施例中, 所述第一优先级指示信息指示 的优先级等于所述第二优先级指示信息指示的优先级, 表示所述第一优 先级指示信息指示的优先级与所述第二优先级指示信息指示的优先级相 同。
第六种情况: 移动性管理网元初始设置所述时间指示信息及所述第二优先级指示 信息。
若不存在对应于所述 UE 的时间指示信息, 以及与所述时间指示信 息对应的所述第二优先级指示信息; 则, 当对所述 UE的第二请求进行拥 塞或过载控制时, 移动性管理网元初始设置所述时间指示信息及所述第 二优先级指示信息,即在所述 UE的上下文中或一个用于保存时间指示信 息的表格中保存所述时间指示信息及所述第二优先级指示信息。 需要说明的是, 此处第二请求也可以为第一请求。
可选的, 所述移动性管理网元在拒绝所述 UE 的第二请求后, 初始 设置所述时间指示信息和所述第二优先级指示信息, 使得所述第二优先 级指示信息指示的优先级与所述第二请求的优先级相同。 示例的, 所述移动管理网元之前没有设置过针对所述 UE 的时间指 示信息及与所述时间指示信息对应的所述第二优先级指示信息, 当在接 收到所述 UE发送第二请求后, 由于对该 UE执行拥塞或过载控制拒绝了 所述 UE的第二请求, 则, 移动管理网元初始设置所述时间指示信息和所 述第二优先级指示信息, 使得所述第二优先级指示信息指示的优先级与 所述第二请求的优先级相同。 该初始设置的所述时间指示信息和所述第 二优先级指示信息可被保存在该 UE 的上下文中或者用于保存时间指示 信息的表格中。
其中, 移动管理网元对所述 UE的第二请求进行拥塞或过载控制时, 由移动管理网元指定所述时间指示信息。 具体的, 移动管理网元指定该 时间指示信息所标识的时间范围或一个时间 , 。
当移动管理网元对所述 UE 的第二请求进行拥塞或过载控制, 并且 所述第二请求中包括的第二优先级指示信息指示的优先级为正常优先级 时, 移动管理网元初始设置所述时间指示信息和所述第二优先级指示信 息。 对于所述第二优先级指示信息, 具体的, 可以将标识该第二优先级 指示信息的所述标识位设置为 "移动台不配置为非接入层信令低优先 级,,; 或者
当移动管理网元对所述 UE 的第二请求进行拥塞或过载控制, 并且 所述第二请求中包括的第二优先级指示信息指示的优先级为低优先级 时, 移动管理网元初始设置所述时间指示信息和所述第二优先级指示信 息。 对于所述第二优先级指示信息, 具体的, 可以将标识该第二优先级 指示信息的所述标识位设置为 "移动台配置为非接入层信令低优先级"。
下面通过一个示例进行说明在移动管理过程中进行拥塞或过载控制 的方法, 如图 2所示, 包括如下:
a、 移动管理网元接收 UE发送的移动管理请求, 该移动管理请求中 包括第一优先级指示信息; 其中, 所述第一优先级指示信息用于标识所 述移动管理请求的优先级。 b、移动管理网元通过所述第一优先级指示信息识别出所述移动管理 请求的优先级; 如果为低优先级, 则进行步骤 C-g中的过程; 如果为正常 优先级, 则进行步骤 h-中的过程。
c、 移动管理网元查询是否存在对应于所述 UE的时间指示信息。 如果存在对应于所述 UE的时间指示信息,并且接收到 UE的移动管 理请求的时刻在该时间指示信息所指示的时间范围内 (即, 该时间指示 信息有效), 则进行步骤 d中的操作; 如果存在对应于所述 UE的时间指 示信息,但接收到 UE的移动管理请求的时刻不在该时间指示信息所指示 的时间范围内; 或者不存在时间指示信息, 则进行步骤 e中的操作。
d、 移动管理网元拒绝该 UE的移动管理请求。
当存在对应于所述 UE 的时间指示信息时, 移动管理网元可以进一 步获取到与该时间指示信息对应的第二优先级指示信息; 此时, 不管所 述第二优先级指示信息指示的优先级为正常优先级或低优先级, 即所述 第二优先级指示信息指示的优先级高于或等于所述第一优先级指示信息 指示的优先级, 则移动管理网元拒绝该 UE的移动管理请求。 因此, 此步 骤中可以不必知道与时间指示信息对应的优先级指示信息。 e、移动管理网元确定是否对低优先级的移动管理请求进行拥塞或过 载控制。
如果移动管理网元对低优先级的移动管理请求进行拥塞或过载控 制, 则执行步骤 f 中的操作; 如果移动管理网元不对低优先级的移动管理 请求进行拥塞或过载控制, 则执行步骤 g中的操作。
f、 移动管理网元拒绝该 UE的低优先级的移动管理请求。
若在 c步骤中移动管理网元不存在对应于所述 UE的时间指示信息, 则移动管理网元保存一个指定的时间指示信息及与该时间指示信息对应 的第二优先级指示信息, 此时, 该第二优先级指示信息指示的优先级为 低优先级。
若在 c步骤中移动管理网元存在对应于所述 UE的时间指示信息, 但接收到 UE 的移动管理请求的时刻不在该时间指示信息所指示的时间 范围内,则移动管理网元修改对应于所述 UE的时间指示信息为新指定的 时间指示信息, 修改所述第二优先级指示信息, 使得所述第二优先级指 示信息指示的优先级与所述第一优先级指示信息指示的优先级相同。 g、 移动管理网元接受该 UE的移动管理请求。
h、 移动管理网元获取是否存在对应于所述 UE的时间指示信息。 当存在对应于所述 UE 的时间指示信息, 移动管理网元可以进一步 获取到该时间指示信息对应的第二优先级的指示信息。
如果移动管理网元接收到 UE 的移动管理请求的时刻在该时间指示 信息所指示的时间范围内, 且获取的与该时间指示信息对应的所述第二 优先级指示信息指示的优先级为正常优先级, 则进行步骤 i中的操作。
如果移动管理网元接收到 UE 的移动管理请求的时刻在该时间指示 信息所指示的时间范围内, 且与该时间指示信息对应的所述第二优先级 指示信息指示的优先级为低优先级; 或
移动管理网元接收到 UE 的移动管理请求的时刻在该时间指示信息 所指示的时间范围以外, 且与该时间指示信息对应的所述第二优先级指 示信息指示的优先级为正常优先级; 或
移动管理网元接收到 UE 的移动管理请求的时刻在该时间指示信息 所指示的时间范围以外, 且与该时间指示信息对应的所述第二优先级指 示信息指示的优先级为低优先级;
则进行步骤 j中的步骤。
当不存在对应于所述 UE的时间指示信息, 则进行步骤 j中的步骤。 i、 移动管理网元拒绝该 UE的移动管理请求。 j、 移动管理网元确定是否对正常优先级的移动管理请求进行拥塞或 过载控制。
如果移动管理网元对正常优先级的移动管理请求进行拥塞或过载控 制, 则执行步骤 k 中的操作; 如果移动管理网元不对正常优先级的移动 管理请求进行拥塞或过载控制, 则执行步骤 1中的操作。
k、 移动管理网元对该 UE的正常优先级的移动管理请求进行拥塞或 过载控制。
若在 h步骤中移动管理网元不存在对应于所述 UE的时间指示信息, 则移动管理网元保存一个指定的时间指示信息及与该时间指示信息对应 的第二优先级指示信息, 此时, 该第二优先级指示信息指示的优先级为 正常优先级。
若在 h步骤中移动管理网元存在对应于所述 UE的时间指示信息, 但接收到 UE 的移动管理请求的时刻在该时间指示信息所指示的时间范 围之外;则移动管理网元修改对应于所述 UE的时间指示信息为新指定的 时间指示信息, 修改所述修改优先级指示信息, 使得所述第二优先级指 示信息指示的优先级与所述第一优先级指示信息指示的优先级相同, 修 改后所述第二优先级指示信息指示的优先级为正常优先级。 若在 h步骤中移动管理网元存在对应于所述 UE的时间指示信息, 但接收到 UE 的移动管理请求的时刻在该时间指示信息所指示的时间范 围内, 且所述第二优先级指示信息指示的优先级为低优先级; 则移动管 理网元修改对应于所述 UE 的时间指示信息更新为新指定的时间指示信 息, 修改所述第二优先级指示信息, 使得所述第二优先级指示信息指示 的优先级与所述第一优先级指示信息指示的优先级相同, 修改后所述第 二优先级指示信息指示的优先级为正常优先级。
1、 移动管理网元接受该 UE的正常优先级的移动管理请求。 本发明实施例提供了一种拥塞控制的方法, 移动管理网元根据所述 UE的第一请求, 以及对应于所述 UE的时间指示信息及所述时间指示信 息对应的第二优先级指示信息, 当满足一定条件时, 可根据网络状况判 断是否对该 UE的请求进行拥塞或过载控制; 否则拒绝该 UE的请求。 由 此, 可解决网络只对低优先级的接入请求进行拥塞或过载控制时, 移动 管理网元会拒绝支持双优先级的 UE的正常接入请求的问题; 此外, 移动 管理网元根据保存的时间指示信, 和该时间指示信, 对应的优先级指示 信息确定是否拒绝来自 UE的接入请求,不需要对每一个接入请求都根据 当前的拥塞 /控制策略确定是否拒绝 UE 的接入请求, 提高了移动管理网 元的处理效率。 本发明另一实施例提供给了一种拥塞控制的方法, 如图 3 所示, 该 方法包括如下步骤:
S301、 移动管理网元接收 UE发送的第一请求, 所述第一请求中包 括第一优先级指示信息; 其中, 所述第一优先级指示信息用于标识所述 第一请求的优先级。 所述第一请求可以为会话管理请求, 相应的第一请求消息为会话管 理请求消息, 当为会话管理请求消息时, 可以为: 分组数据网连接建立 请求( Packet Data Network Connectivity Request ) 消息, 激活分组数据协 议上下文请求 ( Activate Packet Data Protocol Context Request ) 消息 , 载资源修改请求( Bearer Resource Modification Request )消息, 修改分组 数据协议上下文请求( Modify Packet Data Protocol Context Request )消息 等。
S302、 移动管理网元根据接收到所述第一请求的接收时刻和所述第 一优先级指示信息, 以及对应于所述 UE和所述 UE选择的 APN的时间 指示信息及与所述时间指示信息对应的第二优先级指示信息, 确定是否 对所述第一请求进行拥塞或过载控制。
移动管理网元根据所述第一请求中携带的参数确定所述 UE 本次请 求接入所选择的 APN。 由于所述 UE可能发起选择不同的 APN的请求, 而且 APN之间的拥塞或过载状况可能不同, 移动管理网元基于所述 UE 的请求所选择的 APN进行 APN粒度的拥塞或过载控制。
移动管理网元根据所述第一请求中的参数确定第一请求所选择的 A P N ,且可以在其保存的所述 U E的上下文中或者用于保存时间指示信息 的表格中保存对应于所述 UE和所述 UE选择的 APN的时间指示信息及 与所述时间指示信息对应的所述第二优先级指示信息; 但本发明实施例 并不限于此, 可以在任何存储器中进行保存。 在本发明实施例中, 移动管理网元根据所述第一请求中的参数确定 本次请求所选择的 APN, 其实现方式包括但不局限于: 第一请求中包括 选择的 APN的信息, 移动管理网元根据第一请求中的选择的 APN的信 息和所述 UE的签约数据等确定该 UE的第一请求所选择的 APN; 或第 一请求中不包括选择的 APN的信息, 移动管理网元根据所述 UE的签约 数据等确定该 UE的第一请求所选择的 APN。
在本发明实施例中 , 所述 UE选择的 APN表示所述 UE的接入请求 所选择的 APN , 所述 UE指向的 APN表示所述 UE的接入请求所选择的 其中, 移动管理网元在所述 UE发送第一请求以前, 如果对该 UE的 指向该 APN的请求进行拥塞或过载控制并拒绝了所述 UE的请求, 则, 移动管理网元可以在其保存的该 UE的上下文中保存对应于所述 UE和所 述 UE选择的 APN的一个时间指示信息及与该时间指示信息对应的第二 优先级指示信息, 时间指示信息为时长或者时刻。 另外, 移动管理网元 可以在一个用于保存时间指示信息的表格中保存该时间指示信息及与该 时间指示信息对应的第二优先级指示信息。 在本发明实施例中该类时间 指示信息可被称为会话管理时间指示信息。 另外, 移动管理网元在发送第一请求以前, 移动管理网元根据当前 的网络拥塞或过载状况或所述 APN的拥塞或过载情况等, 确定对指向所 述 APN的低优先级或正常优先级的第一请求进行拥塞或过载控制。 移动 管理网元在其保存的该 UE的上下文中保存对应于所述 UE和所述 APN 的时间指示信息及与该时间指示信息对应的优先级指示信息, 其中如果 移动管理网元确定对指向所述 A PN的低优先级的第一请求进行拥塞或过 载控制 , 所述时间指示信息对应的第二优先级指示信, 指示的优先级为 低优先级; 如果移动管理网元确定对指向所述 APN的正常优先级的第一 请求进行拥塞或过载控制, 所述时间指示信息对应的第二优先级指示信 息指示的优先级为正常优先级。
此外, 当移动管理网元接收到所述第一请求后, 移动管理网元可以 通过所述第一优先级指示信息识别出所述 UE的第一请求的优先级,所述 第一优先级为低优先级或者正常优先级。
下面分以下几种情况分别进行说明是否对所述 UE 的本次请求进行 拥塞或过载控制的过程。
第一种情况: 当移动管理网元接收所述第一请求的时刻在所述时间指示信息所指 示的时间范围内, 并且所述第一优先级指示信息指示的优先级高于与所 述第二优先级指示信息指示的优先级时, 确定对所述第一请求进行拥塞 或过载控制。 可选的, 当移动管理网元依据移动管理网元的负载状况、 移动管理 网元的拥塞或过载控制策略、 该所述 UE本次请求所选择的 APN对应的 网关设备的负载状况等确定对所述 UE 的第一请求进行拥塞或过载控制 时, 移动管理网元可以通过第一请求响应拒绝该 UE的第一请求, 具体的 可以为移动管理网元发送第一请求响应消息拒绝该 U E的第一请求。 其中, 所述第一请求响应消息可以为会话管理请求响应消息, 当为 会话管理请求响应消息时, 可以为: 分组数据网连接建立拒绝 ( PDN Connectivity Reject ) 消息, 激活分组数据协议上下文拒绝 (Active PDP Context Reject ) , !载资源爹改巨绝 ( Bearer Resource Modification Reject ) 消息, 爹改分组数据协议上下文拒绝( Modify Packet Data Protocol Context Reject ) 消息等。
进一步地, 移动管理网元修改所述时间指示信息为新指定的时间指 示信息, 修改所述第二优先级指示信息, 使得所述第二优先级指示信息 指示的优先级与所述第一优先级指示信息指示的优先级相同。
示例的,若移动管理网元中有对应于所述 UE和所述 UE选择的 ΑΡΝ 的时间指示信息, 及与该时间指示信息对应的第二优先级指示信息, 例 如该第二优先级指示信息指示的优先级为低优先级, 且移动管理网元接 收到该第一请求的时刻在所述时间指示信息所指示的时间范围内, 并且 所述第一优先级指示信息指示的优先级例如为正常优先级, 即第一优先 级指示信息指示的优先级高于与所述第二优先级指示信息指示的优先 级。 此时, 若移动管理网元根据网络状况确定对所述 UE的第一请求进行 拥塞或过载控制, 则移动管理网元拒绝该 UE的第一请求, 修改所述时间 指示信息为新指定的时间指示信息, 修改所述第二优先级指示信息, 使 得所述第二优先级指示信息指示的优先级与所述第一优先级指示信息指 示的优先级相同。
其中, 所述第二优先级指示信息还可以通过一个标识位指示所述新 指定的时间指示信息对应的所述原因指示信息, 例如, 该标识位被修改 为 "因正常优先级的接入请求而保存的时间" , 即在修改后该标识位指 示正常优先级。 在本发明实施例中, 对于所述 UE 的第一请求被拒绝, 移动管理网 元修改所述时间指示信息为新指定的时间指示信息, 修改所述第二优先 级指示信息, 使得所述第二优先级指示信息指示的优先级与所述第一优 先级指示信息指示的优先级相同。 但本发明实施例并不限于此, 还可以 为另外一种实现方法: 即, 移动管理网元删除保存的对应于所述 UE和所 述 UE选择的 APN的时间指示信息和所述时间指示信息对应的所述第二 优先级指示信息, 移动管理网元保存新指定的所述时间指示信息, 以及 所述时间指示信息对应的第二优先级指示信息, 且所述第二优先级指示 信息指示的优先级与所述第一优先级指示信息指示的优先级相同。
第二种情况: 当移动管理网元接收所述第一请求的时刻在所述时间指示信息所指 示的时间范围外时, 确定对所述第一请求进行拥塞或过载控制。
可选的, 当移动管理网元确定对所述 UE 的第一请求本次请求进行 拥塞或过载控制时,移动管理网元通过第一请求响应消息拒绝该 UE的第 一请求。
进一步地, 移动管理网元修改所述时间指示信息为新指定的时间指 示信息, 修改所述第二优先级指示信息, 使得所述第二优先级指示信息 指示的优先级与所述第一优先级指示信息指示的优先级相同。
第三种情况: 当移动管理网元接收所述第一请求的时刻在所述时间指示信息所指 示的时间范围内, 并且所述第一优先级指示信息指示的优先级高于所述 第二优先级指示信息指示的优先级时, 确定不对所述第一请求进行拥塞 或过载控制。 可选的, 当移动管理网元依据移动管理网元的负载状况以及移动管 理网元的拥塞或过载控制策略等确定不对所述 UE 的第一请求进行拥塞 或过载控制时,移动管理网元可以通过第一请求响应消息接受该 UE的第 一请求。
可选的, 若移动管理网元确定不对所述 UE 的本次请求进行拥塞或 过载控制, 则, 所述方法进一步包括: 接受所述 UE的第一请求。 当所述第一请求为会话管理请求时, 移动管理网元按照所述 UE 的 本次会话管理请求的类型, 进行对应的会话管理请求的后续流程的处理。 例如: 当对应该请求的会话管理请求消息为分组数据网连接建立请求
( PDN Connectivity Request ) 消息时, 后续流程包括: 创建会话 ( Create Session ) 流程和承载建立 ( Bearer Setup ) 流程等。 当会话管理请求对应 的流程完成后, 移动管理网元向 UE发送会话管理请求响应消息, 所述会 话管理请求响应消息指示所述 UE的本次请求被接受。会话管理请求响应 消息可以为分组数据网连接建立响应 ( PDN Connectivity Accept/Reject ) 消息, 激活分组数据协议上下文响应( Active PDP Context Accept/Reject ) 消息 , 载资源爹改响应 ( Bearer Resource Modification Accept/Reject ) 消息,修改分组数据协议上下文响应( Modify Packet Data Protocol Context Accept/Rej ect ) 消息等。
第四种情况:
当移动管理网元接收所述第一请求的时刻在所述时间指示信息所指 示的时间范围外时, 确定对所述第一请求进行拥塞或过载控制。
示例的, 移动管理网元确定不对所述 UE和所述 UE所指向的 APN 的第一请求进行拥塞或过载控制的情况可以为, 移动管理网元依据移动 管理网元的负载状况、 移动管理网元的拥塞或过载控制策略、 该所述 UE 的第一请求所选择的 APN 对应的网关设备的负载状况等确定不对所述 UE的第一请求进行拥塞控制。 例如, 移动管理网元首先对低优先级或正 常优先级的请求进行拥塞或过载控制, 但网络拥塞或过载情况没有进一 步加剧,若移动管理网元接收所述 UE的第一请求的时刻在所述移动管理 网元保存的所述 UE的时间指示信息的时间范围外; 也就是说, 当移动管 理网元接收所述 UE 的第一请求的时刻在所述移动管理网元保存的所述 UE的时间指示信息的时间范围外时, 移动管理网元可不对所述 UE的正 常优先级的第一请求进行拥塞或过载控制。 进一步地, 所述方法进一步包括: 接受所述 UE的第一请求。 第五种情况: 当所述接收时刻在所述时间指示信, 所指示的时间范 围内, 并且所述第一优先级指示信息指示的优先级低于或等于所述第二 优先级指示信息指示的优先级时, 确定对所述第一请求进行拥塞或过载 控制。
示例的,若移动管理网元中有对应于所述 UE和所述 UE选择的 APN 的时间指示信息, 及与该时间指示信息对应的第二优先级指示信息, 例 如为低优先级; 且移动管理网元接收到该第一请求的时刻在所述时间指 示信息所指示的时间范围内, 并且所述第一请求中携带的第一优先级指 示信息指示为低优先级, 即所述第一优先级指示信息指示的优先级等于 所述第二优先级指示信息指示的优先级。 此时, 移动管理网元拒绝该 UE 的第一请求。
另一示例, 若移动管理网元中有对应于所述 UE和所述 UE选择的 APN的时间指示信息,及与该时间指示信息对应的第二优先级指示信息, 例如为正常优先级; 且移动管理网元接收到该第一请求的时刻在所述时 间指示信息所指示的时间范围内, 并且所述第一请求中携带的第一优先 级指示信息指示为低优先级, 即所述第一优先级指示信息指示的优先级 低于所述第二优先级指示信息指示的优先级。 此时, 移动管理网元拒绝 该 UE的第一请求。 另一示例, 若移动管理网元中有对应于所述 UE和所述 UE选择的 APN 的时间指示信息, 及与该时间指示信息对应的第二优先级指示信息 指示, 例如为正常优先级; 且移动管理网元接收到该第一请求的时刻在 所述时间指示信息所指示的时间范围内, 并且所述第一请求中携带的第 一优先级为正常优先级, 即所述第一优先级指示信息指示的优先级等于 所述第二优先级指示信息指示的优先级。 此时, 移动管理网元拒绝该 UE 的第一请求。
需要说明的是, 在本发明实施例中, 所述第一优先级指示信息指示 的优先级等于所述第二优先级指示信息指示的优先级, 表示所述第一优 先级指示信息指示的优先级与所述第二优先级指示信息指示的优先级相 同。
第六种情况: 移动性管理网元初始设置所述时间指示信息及所述第二优先级指示 信息。
若不存在对应于所述 UE和所述 UE所选择的 APN的时间指示信息, 以及与所述时间指示信息对应的所述第二优先级指示信息; 则, 当对所 述 U E的第二请求进行拥塞或过载控制时,移动性管理网元初始设置所述 时间指示信息及所述第二优先级指示信息,即在所述 UE的上下文中或一 个用于保存时间指示信, 的表格中保存所述时间指示信息及所述第二优 先级指示信息。 需要说明的是, 此处第二请求也可以为第一请求。
可选的, 所述移动性管理网元在拒绝所述 UE和所述 UE所指向的 APN 的第二请求后, 初始设置所述时间指示信息和所述第二优先级指示 信息, 使得所述第二优先级指示信息指示的优先级与所述第二请求的优 先级相同。
示例的, 所述移动管理网元之前没有设置过针对所述 UE和所述 UE 所选择的 APN的时间指示信息及与所述时间指示信息对应的所述第二优 先级指示信息, 当在接收到所述 UE发送第二请求消息后, 由于对该 UE 执行拥塞或过载控制拒绝了所述 UE的第二请求, 则, 移动管理网元初始 设置所述时间指示信息和所述第二优先级指示信息, 使得所述第二优先 级指示信, 指示的优先级与所述第二请求的优先级相同。 该初始设置的 所述时间指示信息和所述第二优先级指示信息可被保存在该 UE 的上下 文中或者用于保存时间指示信息的表格中。 本发明实施例提供了一种拥塞控制的方法, 移动管理网元根据所述 UE的第一请求, 以及对应于所述 UE的时间指示信息及所述时间指示信 息对应的第二优先级指示信息, 当满足一定条件时, 可根据网络状况判 断是否对该 UE的第一请求进行拥塞或过载控制; 否则拒绝该 UE的本次 请求。 由此, 可解决网络只对低优先级的接入请求进行拥塞或过载控制 时, 移动管理网元会拒绝支持双优先级的 UE的正常接入请求的问题; 此 外, 移动管理网元根据保存的时间指示信, 和该时间指示信, 对应的优 先级的指示信息确定是否拒绝来自 UE的接入请求,不需要对每一个接入 请求都根据当前的拥塞 /控制策略确定是否拒绝 UE 的接入请求, 提高了 移动管理网元的处理效率。 本发明又一实施例提供给了一种拥塞控制的方法, 如图 4所示, 该 方法包括如下步骤:
S401、 当 UE 的低优先级接入请求受到拥塞或过载控制时, 移动管 理网元接收所述 UE发送的具有正常优先级的第一请求。 可选的, 所述第一请求中包括: 优先级指示信息, 所述优先级指示 信息用于标识所述第一请求的优先级; 其中, 所述第一请求的优先级为 正常优先级。
进一步地, 移动管理网元获取所述 UE是在低优先级的接入请求受 到拥塞或过载控制时发起的正常优先级的接入请求包括如下几种方法: 第一种: 移动管理网元接收所述 UE发送的第一请求中包括所述 UE 在低优先级的接入请求受到拥塞或过载控制的情况下请求接入的指示信 息。
其中, 所述 UE 在发送所述第一请求前, 确定所述低优先级的接入 请求受到拥塞或过载控制包括:
1 ) 、 UE发送的低优先级的接入请求被移动管理网元拒绝, 所述移 动管理网元在接入请求响应消息中携带针对所述 UE的时间指示信息,所 述 UE根据该时间指示信息启动一个定时器, 在该定时器运行期间, 所述 UE不能发送低优先级的接入请求。
2 ) 、 UE从无线接入网络( Radio Access Network, 简称 RAN )接收 到对低优先级的接入请求启用 EAB的指示信息。
3 )、 UE发送的低优先级的 RRC连接请求消息被无线通信网络拒绝, 无线通信网络在 RRC连接响应消息中携带针对所述 UE的时间指示信息, 所述 U E根据该时间指示信息启动定时器, 在该定时器运行时所述 U E不 能发送低优先级的 RRC接入请求。
在上述情况下, UE可确定所述 UE的低优先级的接入请求受到拥塞 或过载控制。
示例的, 在第一请求中, 某一个信息单元( Information Element )可 以用于标识所述 UE 是在低优先级的接入请求受到拥塞或过载控制的情 况下请求接入的指示信息。 例如, 该信息单元中的一个标志位可以设置 为 "低优先级的接入请求受到拥塞或过载控制情况下请求接入" ( "Request access while restricting low priority" ) , 标识所述 UE是在低 优先级的接入请求受到拥塞或过载控制的情况下请求接入。
此外, 移动管理网元接收所述 UE发送的第一请求中还可以包括优 先级指示信息, 所述优先级指示信息用于标识所述第一请求的优先级; 其中, 所述第一请求的优先级为正常优先级。
第二种: 移动管理网元接收所述 UE发送的所述第一请求的时刻在 保存的对应于所述 UE或所述 UE和所述 UE选择的 APN的时间指示信息 所指示的时间范围内; 且所述第一请求的优先级高于与所述时间指示信 息对应的所述优先级指示信, 指示的优先级。 示例的, 当该第一请求为移动管理请求消息时, 移动管理网元识别 出所述 UE的请求的优先级例如为正常优先级,并获取其是否保存了对应 于所述 UE的时间指示信息,及与所述之间指示信息对应的优先级指示信 息。 若存在对应于所述 UE的时间指示信息, 及与所述之间指示信息对应 的优先级指示信;且移动管理网元接收到所述 UE发送的第一请求的时刻 在所述时间指示信息所指示的时间范围内, 并且所述第一请求的优先级 (正常优先级) 高于与所述时间指示信息对应的所述优先级指示信息指 示的优先级(低优先级)时, 则移动管理网元则可确定该 UE是在低优先 级的接入请求受到拥塞或过载控制时发起的正常优先级的接入请求。
又如: 当该第一请求为会话管理请求消息时, 移动管理网元识别出 所述 UE的第一请求的优先级例如为正常优先级,并根据第一请求中的参 数确定该 UE的本次接入请求所选择的 APN。 并获取其是否保存了对应 于所述 UE和所述 UE所选择的 APN的时间指示信息, 及与所述之间指 示信息对应的优先级指示信息。 若存在对应于所述 UE和所述 UE所选择 的 APN的时间指示信息, 及与所述之间指示信息对应的优先级指示信; 且移动管理网元接收到所述 UE 发送的第一请求的时刻在该时间指示信 息所指示的时间范围内, 并且所述第一请求的优先级 (正常优先级) 高 于与所述时间指示信, 对应的所述优先级指示信, 指示的优先级 (低优 先级)时, 则移动管理网元则可确定该 UE是在低优先级的接入请求受到 拥塞或过载控制时发起的正常优先级的接入请求。
其中, 根据上述两个实施例的描述, 当所述 UE 的接入请求受到拥 塞或过载控制时; 或, 当所述 UE指向 APN的接入请求受到拥塞或过载 控制时; 所述移动管理网元拒绝所述 UE的接入请求, 并保存对应于所述 UE的时间指示信息及与所述时间指示信息对应的所述优先级指示信息, 或保存对应于所述 UE和所述 UE选择的 APN的时间指示信息及与所述 时间指示信息对应的所述优先级指示信息。 第三种: 移动管理网元在通知 RAN对所述 UE的低优先级的接入请 求进行 EAB后,接收到所述 UE发送的优先级为正常优先级的第一请求。 在本发明实施例中, 所述第一请求可以为移动管理请求, 相应的所 述第一请求消息可以为移动管理请求消息; 所述第一请求也可以为会话 管理请求, 相应的所述第一请求消息可以为会话管理请求;肖 , 。
示例的,第一请求可以为 Attch Request (附着请求), PDN Connectivity Request (分组数据网络连接请求)或 Activate PDP Context Request (激活 分组数据协议上下文请求)。
S402、 根据所述第一请求, 所述移动管理网元向所述网关设备发送 会话管理消息,所述会话管理消息中包括用于指示在所述 UE的低优先级 接入请求受到拥塞或过载控制时为所述 UE分配承载的标识信息。
示例的, 当移动管理网元根据所述第一请求确定所述 UE是在低优 先级的接入请求受到拥塞或过载控制时发起正常优先级的接入请求, 移 动管理网元向所述 UE的接入请求所选择的 APN对应的网关设备发送会 话管理消息 ,会话管理消息包括用于指示在所述 UE的低优先级接入请求 受到拥塞或过载控制时为所述 UE分配承载的标识信息。
其中,会话管理消息可以为创建 PDP上下文请求( Create PDP Context Request ) 消息或创建会话请求 ( Create Session Request ) 消息。 例如, 会 话管理消息中的一个信息单元可以用于标识所述 UE 的低优先级的接入 请求受到拥塞或过载控制时分配承载的标识信息。 可选的, 该信息单元 中的一个标志位可以设置为 "低优先级的接入请求受到拥塞或过载控制 时分配 载的标识信息,, ( "Create bearer while restricting low priority" ) 时,标识为所述 UE在低优先级的接入请求受到拥塞或过载控制时分配承 载。
对于上述第二种, 第三种方法, 即所述移动管理网元通过第二种方 法或第三种方法确定所述 UE 是在低优先级的接入请求受到拥塞或过载 控制时发起的正常优先级的接入请求时, 移动管理网元进一步的保存该 UE 的准备建立的承载的信息, 所述承载的信息包括: 承载标识、 所述 UE 在低优先级的接入请求受到拥塞或过载控制的情况下请求接入的指 示信息。
S403、 所述网关设备为所述 UE 分配承载, 并在所述承载的上下文 中保存用于指示所述承载是在所述 UE 的低优先级的接入请求受到拥塞 或过载控制时分配的承载的标识信息。 通过该标识信息可识别出该承载是为所述 UE 在低优先级的接入请 求受到拥塞或过载控制时分配的承载。
S404、 所述网关设备向所述移动管理网元发送会话管理响应消息, 所述会话管理响应消息中携带已为所述 UE分配承载的指示信息。 示例的, 网关设备向移动管理网元发送的会话管理响应消息可以为 创建 PDP上下文响应 ( Create PDP Context Response ) 消息, 创建会话响 应 ( Create Session Response ) 消息等。
进一步地, 所述移动管理网元在收到所述会话管理响应消息后, 在 所述承载的上下文中保存用于指示所述承载为当所述 UE 的低优先级接 入请求受到拥塞或过载控制时分配的承载的标识信息。
在本发明实施例中, 进一步的, 当移动管理网元和网关设备在各自 承载的上下文中保存用于指示所述承载为当所述 UE 的低优先级接入请 求受到拥塞或过载控制时分配的承载的标识信息时, 移动管理网元和网 关设备在产生关于这个承载的计费数据记录 ( charging data record, 简称 CDR )中可以保存用于指示所述承载为当所述 UE的低优先级接入请求受 到拥塞或过载控制时为所述 U E分配的承载的标识信息,从而可以通过该 标识信息指示该 CDR为所述 UE在低优先级的接入请求受到拥塞或过载 控制时分配的承载的 CDR。
示例的, CDR中的一个信息单元可以用于标识所述 UE在低优先级 的接入请求受到拥塞或过载控制时分配承载的标识信息。 可选的, 该信 息单元中的一个标志位可以设置为 "低优先级的接入请求受到拥塞或过 载控制时分配承载" , 标识为所述 UE在低优先级的接入请求受到拥塞或 过载控制时分配承载。 在本发明实施例中, 所述承载可以指演进分组系统承载(EPS Bearer) , 分组数据网络连接(PDN connection)、 分组数据协议上下文(PDP Context)等。 此外, 移动管理网元对所述 UE的第一请求进行响应, 具体的可以为, 发送第一请求响应消息, 所述第一请求响应消息指示所述 UE 的本次接入 请求被接受。 示例的, 所述第一请求响应可以为附着接收( Attach Accept ) , PDN 连接建立接受( PDN Connectivity Accept )、激活 PDP上下文接受( Active PDP Context Accept ) 等。 需要说明的是, 本发明所有实施例的拥塞或过载的控制方法可以适用 于多种无线通信网。 例如: 演进通用移动通信系统 ( Universal Mobile Telecommunication System , 简称 UMTS ) 、 陆地无线接入网 (Evolved Universal Mobile Telecommunication System Territorial Radio Access Network,简称 E-UTRAN )、UMTS陆地无线接入网( UMTS Territorial Radio Access Network, 简称 UTRAN ) 、 全球移动通信系统 (Global System for Mobile Communications , 简称 GSM ) 提高数据速率的 GSM 演进技术 ( Enhanced Data rate for GSM Evolution, 简称 EDGE ) 无线接入网 ( GSM EDGE Radio Access Network, 简称 GERAN )、 非第三代合作伙伴计划( the 3rd Generation Partner Project, 简称 3 GPP ) 网络等。 其中, 移动管理网元可以为移动性管理实体 ( Mobility Management Entity,简称 MME ) ,还可以为服务通用分组无线服务( General Packet Radio Service ,简称 GPRS )支持节点( Serving GPRS Supporting Node ,简称 SGSN ) 等。
网关设备可以为服务网关( Serving Gateway, 简称 S-GW ) , 还可以 为分组数据网络网关 ( Packet Data Network Gateway, 简称 P-GW ) , 也 可以为网关通用分组无线服务( General Packet Radio Service ,简称 GPRS ) 支持节点 ( Gateway GPRS Supporting Node, 简称 GGSN ) 等。
用户设备(User Equipment, 简称 UE ) 可以为以下任意一种, 并且 UE 可以是静态的, 也可以是移动的。 静止的 UE 可以包括为终端 ( Terminal ), 移动台 (Mobile Station ), 用户单元 ( Subscriber Unit ) 或 站台 (Station ) 等。 移动的 UE可以包括蜂窝电话 (Cellular Phone )、 个 人数字助理( Personal Digital Assistant, PDA ),无线调制解调器( modem ), 无线通信设备、 手持设备 (handheld ), 膝上型电脑 ( Laptop Computer )、 无绳电话( Cordless Phone )或无线本地环路 ( Wireless Local Loop, WLL ) 台等。 上述 UE可以分布于整个无线网络中。 本发明实施例提供了一种拥塞控制的方法, 移动管理网元根据 UE 发送的正常优先级的第一请求,向网关设备包括用于指示在所述 UE的低 优先级接入请求受到拥塞或过载控制时为所述 U E分配承载的标识信息, 使得网关设备为所述 UE分配承载,并在该承载的上下文中保存用于指示 所述承载是在所述 UE 的低优先级的接入请求受到拥塞或过载控制时分 配的承载的标识信息, 当网关设备分配所述承载后, 移动管理网元也在 该承载的上下文中保存所述标识信息。 此外, 移动管理网元和网关设备 可在该承载的 CDR中保存用于指示所述承载是在所述 UE的低优先级的 接入请求受到拥塞或过载控制时分配的承载的标识信息, 这样可使网络 运营商能够进一步的对该类承载进行单独的计费, 也可对支持双优先级 的 UE进行 4艮好的管理。 本发明实施例提供了一种拥塞控制的系统, 该系统包括移动管理网 元。 基于该系统, 本发明实施例提供了一种移动管理网元, 该移动管理 网元 10与上述方法的前两个实施例提供的一种拥塞控制的方法中的所述 移动管理网元相对应, 故对于各个单元的具体描述, 可以为上述步骤的 描述, 在此不再贅述。 如图 5所示, 该移动管理网元 10包括: 接收单元 101 , 用于接收 UE发送的第一请求, 所述第一请求中包括 第一优先级指示信息; 其中, 所述第一优先级指示信息用于标识所述第 一请求的优先级。 在本发明实施例中, 所述 UE 可被配置为支持双优先级, 即, 支持 低优先级和正常优先级的网络接入。所述 UE也可被配置为仅支持低优先 级的接入网络接入。 第一优先级指示信息可被封装在设备属性信元中, 其中所述第一请 求中包括所述设备属性信元。 例如: 当设备属性信元中的对应的标识位 设置为 "移动台配置为非接入层信令低优先级" 时, 表示所述第一请求 的优先级为低优先级; 当设备属性信元中的对应的标识位设置为 "移动 台不配置为非接入层信令低优先级" 时, 表示所述第一请求的优先级为 正常优先级。
处理单元 102 , 用于根据所述接收单元 101 接收所述第一请求的接 收时刻和所述第一优先级指示信息,以及对应于所述 UE的时间指示信息 及所述时间指示信息对应的第二优先级指示信息, 确定是否对所述第一 请求进行拥塞或过载控制。
移动管理网元可以在其保存的该 UE 的上下文中或者用于保存时间 指示信息的表格中查询是否存在对应于所述 UE或所述 UE和所述 UE选 择的 APN的时间指示信息, 及与所述时间指示信息对应的所述第二优先 级指示信息; 但本发明实施例并不限于此, 可以在任何存储单元中进行 保存。
其中, 移动管理网元在所述 UE发送第一请求以前, 如果对该 UE执 行拥塞或过载控制并拒绝了所述 UE的请求, 则, 移动管理网元可以在其 保存的该 UE的上下文中保存对应于所述 UE或所述 UE和所述 UE选择 的 APN 的时间指示信息及与该时间指示信息对应的第二优先级指示信 息, 时间指示信息为时长或者时刻。 另外, 移动管理网元还可以在一个 用于保存时间指示信息的表格中保存该时间指示信息及与该时间指示信 息对应的第二优先级指示信息。 在本发明实施例中该类时间指示信息可 被称为移动管理时间指示信息。 需要说明的是, 所述第一请求可以为移动管理请求, 也可以为会话 管理请求; 当所述第一请求为移动管理请求消息时, 所述时间指示信息、 所述第一时间指示信息对应于所述 U E; 当所述第一请求为会话管理请求 时, 所述时间指示信息、 所述第一时间指示信息对应于所述 UE 和所述 UE选择的 APN。
可选的, 所述处理单元 102 , 具体用于若接收单元 101 接收到所述 第一请求的时刻在所述时间指示信息所指示的时间范围内, 并且所述第 一优先级指示信息指示的优先级高于所述第二优先级指示信息指示的优 先级时; 确定对所述第一请求进行拥塞或过载控制。
可选的, 所述处理单元 102 , 具体用于若接收单元 101 接收到所述 第一请求的时刻在所述时间指示信息所指示的时间范围外时; 确定对所 述第一请求进行拥塞或过载控制。 在此情况下, 所述处理单元 102 , 还用于修改所述时间指示信息为 新指定的时间指示信息, 修改所述第二优先级指示信息, 使得所述第二 优先级指示信息指示的优先级与所述第一优先级指示信息指示的优先级 相同。
示例的, 若移动管理网元中存在对应于所述 UE或所述 UE选择的 APN 的时间指示信息, 及与该时间指示信息对应的第二优先级指示信息 指示的优先级例如为低优先级; 在此情况下, 若处理单元 102 获知接收 单元 101 接收的第一请求的时刻在所述时间指示信息所指示的时间范围 内, 且所述第一优先级指示信息指示的优先级高于所述第二优先级指示 信息指示的优先级, 此时, 若处理单元 102根据网络状况确定对所述 UE 的第一请求进行拥塞或过载控制, 则拒绝该 UE的第一请求, 并修改所述 时间指示信息为新指定的时间指示信息, 修改所述第二优先级指示信息, 使得所述第二优先级指示信息指示的优先级与所述第一优先级指示信息 指示的优先级相同。
可选的, 所述处理单元 102 , 具体用于当所述接收单元接收 101 到 所述第一请求的所述接收时刻在所述时间指示信, 所指示的时间范围 内, 并且所述第一优先级指示信息指示的优先级高于所述第二优先级指 示信息指示的优先级时; 确定对所述第一请求不进行拥塞或过载控制。
所述处理单元 102 , 具体用于当所述接收单元 101 接收到所述第一 请求的所述接收时刻在所述时间指示信, 所指示的时间范围外时, 确定 对所述第一请求不进行拥塞或过载控制。
进一步地, 所述处理单元 102 , 还可以用于通过第一请求响应接受 该 UE的第一请求。 可选的, 所述处理单元 102 , 具体用于当接收单元 101 接收到所述 第一请求的时刻在所述时间指示信息所指示的时间范围内, 并且所述第 一优先级指示信息指示的优先级低于或等于所述第二优先级指示信息指 示的优先级时; 则, 确定对所述第一请求进行拥塞或过载控制。 示例的, 若移动管理网元中存在对应于所述 UE或所述 UE和所述 UE选择的 APN的时间指示信息, 及与该时间指示信息对应的第二优先 级指示信息, 例如为正常优先级; 若处理单元 102获知接收单元 101接 收到第一请求的时刻在所述时间指示信息所指示的时间范围内, 且所述 第一请求中携带的第一优先级指示信息指示为低优先级, 即所述第一优 先级指示信息指示的优先级低于或等于与所述第二优先级指示信息指示 的优先级, 则拒绝该 UE的第一请求。 可选的, 所述处理单元 102 , 还用于初始设置所述时间指示信息及 所述第二优先级指示信息。 若不存在对应于所述 UE 的时间指示信息, 以及与所述时间指示信 息对应的所述第二优先级指示信息; 则, 当对所述 UE的第二请求进行拥 塞或过载控制时, 所述处理单元 102 初始设置所述时间指示信息及所述 第二优先级指示信息。
需要说明的是, 所述第二请求可以为第一请求。
进一步地, 所述处理单元 102 , 具体用于在拒绝所述 UE的第二请求 后, 初始设置所述时间指示信息和所述第二优先级指示信息, 使得所述 第二优先级指示信息指示的优先级与所述第二请求的优先级相同。
示例的,处理单元 102之前没有设置过针对所述 UE或所述 UE和所 述 UE 所选择的时间指示信息及与所述时间指示信息对应的所述第二优 先级指示信息, 当接收单元 101接收到所述 UE发送的第二请求消息后, 由于对该 UE执行拥塞或过载控制拒绝了所述 UE的第二请求, 则, 处理 单元 102 初始设置所述时间指示信息和所述第二优先级指示信息, 使得 所述第二优先级指示信息指示的优先级与所述第二请求的优先级相同。 该初始设置的所述时间指示信息和所述第二优先级指示信息可被保存在 该 U E的上下文中或者用于保存时间指示信息的表格中。 此外, 如图 6所示, 所述该移动管理网元 10还包括:
存储单元 103 ,用于存储所述对应于所述 UE及与所述第二优先级指 示信息。 本发明实施例提供了一种移动管理网元, 移动管理网元根据接收到 的所述 UE的第一请求, 以及对应于所述 UE的时间指示信息及所述时间 指示信息对应的第二优先级指示信息, 当满足一定条件时, 可根据网络 状况判断是否对该 UE的请求进行拥塞或过载控制; 否则拒绝该 UE的请 求。 由此, 可解决网络只对低优先级的接入请求进行拥塞或过载控制时, 移动管理网元会拒绝支持双优先级的 UE的正常接入请求的问题; 此外, 移动管理网元根据保存的时间指示信息和该时间指示信息对应的优先级 指示信息确定是否拒绝来自 UE的接入请求,不需要对每一个接入请求都 根据当前的拥塞 /控制策略确定是否拒绝 UE 的接入请求, 提高了移动管 理网元的处理效率。 本发明又一实施例提供了一种拥塞控制的系统, 该系统包括移动管 理网元、 UE及网关设备。 基于该系统, 本发明实施例提供了另一种移动管理网元 20 , 该移动 管理网元 20与上述方法的第三个实施例提供的一种拥塞控制的方法中的 所述移动管理网元相对应, 故对于各个单元的具体描述, 可以为上述步 骤的描述, 在此不再贅述。 该移动管理网元 20, 如图 7所示, 包括: 接收单元 201 ,用于当 UE的低优先级接入请求受到拥塞或过载控制 时, 接收所述 UE发送的具有正常优先级的第一请求。 生成单元 202 , 用于根据所述接收单元 201 接收的所述第一请求生 成会话管理消息,所述会话管理消息中包括用于指示在所述 UE的低优先 级接入请求受到拥塞或过载控制时为所述 U E分配承载的标识信息。 所述生成单元 202可以根据所述接收单元 201接收的所述第一请求 中包括低优先级的接入请求受到拥塞或过载控制时请求接入的指示信 息,确定所述 UE是在低优先级的接入请求受到拥塞或过载控制时发起的 正常优先级的接入请求。
其中, 所述 UE 确定低优先级的接入请求受到拥塞或过载控制的情 况可以包括:
1 ) 、 UE发送的低优先级的接入请求被移动管理网元拒绝, 所述移 动管理网元在接入请求响应消息中携带针对所述 UE的时间指示信息,所 述 UE根据该时间指示信息启动定时器, 在该定时器运行期间, 不能发送 所述低优先级的接入请求。
2 )、 UE从无线通信网络接收到对所述低优先级的接入请求启用 E AB 的指示信息。 例如, RAN可以在其发送的广播消息中携带启用 EAB的指 示信息, UE通过接收所述广播消息获得启用 EAB的指示信息。 3 )、 UE发送的低优先级的 RRC连接请求消息被无线通信网络拒绝, 所述无线通信网络在 RRC连接响应消息中携带针对所述 UE的时间指示 信息, 所述 UE根据该时间指示信息启动定时器, 在该定时器运行时所述 UE不能发送所述低优先级的 RRC连接请求。
在上述情况下, UE可确定所述 UE的低优先级的接入请求受到拥塞 或过载控制。
可选的, 所述接收单元 201 , 具体用于当所述 UE的低优先级接入请 求受到拥塞或过载控制时, 所述移动管理网元通知无线接入网络对所述 UE的低优先级的接入请求进行 EAB后,接收所述 UE发送的所述第一请 求。
在此情况下, 所述生成单元 202可以根据所述接收单元 201 的信息 确定所述 UE 是在低优先级的接入请求受到拥塞或过载控制时发起的正 常优先级的接入请求。 可选的, 所述接收单元 201 , 具体用于当所述 UE的低优先级接入请 求受到拥塞或过载控制时, 接收所述第一请求的时刻在保存的对应于所 述 UE的时间指示信息所指示的时间范围内, 且所述 UE的第一请求的优 先级高于与所述时间指示信息对应的优先级指示信息指示的优先级。 在此情况下, 所述生成单元 202可以根据所述接收单元 201 的信息 确定所述 UE 是在低优先级的接入请求受到拥塞或过载控制时发起的正 常优先级的接入请求。 发送单元 203 , 用于用于将所述生成单元 202生成所述会话管理消 息发送到所述网关设备;以便于所述网关设备在为所述 UE分配的承载的 上下文中保存用于指示所述承载是在所述 UE 的低优先级的接入请求受 到拥塞或过载控制时分配的承载的标识信息。
进一步地, 如图 8 所示, 所述移动管理网元还包括处理单元 204, 用于在产生的所述承载的计费数据记录中保存用于指示所述承载是在所 述 UE 的低优先级的接入请求受到拥塞或过载控制时分配的承载的标识 信息。
其中, 所述处理单元 204, 还用于在所述网关设备分配所述承载后, 在所述承载的上下文中保存用于指示所述承载是在所述 UE 的低优先级 的接入请求受到拥塞或过载控制时分配的承载的标识信息。
此外, 当所述处理单元 204, 还用于当确定所述 UE是在低优先级的 接入请求受到拥塞或过载控制时发起的正常优先级的接入请求不是直接 从第一请求中获取时, 所述处理单元 204, 还用于在所述网关设备分配所 述承载前,保存所述 UE的准备建立的承载的信息,所述承载的信息包括: 所述承载标识、所述 UE在低优先级的接入请求受到拥塞或过载控制的情 况下请求接入的指示信息。
进一步地, 所述处理单元 204, 还用于在产生的所述承载的 CDR中 保存用于指示所述承载是在所述 UE 的低优先级的接入请求受到拥塞或 过载控制时分配的承载的标识信息, 从而可以通过该标识信息指示该 CDR为所述 UE在低优先级的接入请求受到拥塞或过载控制时分配的承 载的 CDR。 本发明实施例提供了一种移动管理网元, 根据 UE 发送的正常优先 级的第一请求,向网关设备包括用于指示在所述 UE的低优先级接入请求 受到拥塞或过载控制时为所述 U E分配承载的标识信息,使得网关设备为 所述 UE分配承载,并在该承载的上下文中保存用于指示所述承载是在所 述 UE 的低优先级的接入请求受到拥塞或过载控制时分配的承载的标识 信息, 当网关设备分配所述承载后, 移动管理网元也在该承载的上下文 中保存所述标识信息。此外,移动管理网元和网关设备可在该承载的 CDR 中保存用于指示所述承载是在所述 UE 的低优先级的接入请求受到拥塞 或过载控制时分配的承载的标识信息, 这样可使网络运营商能够进一步 的对该类承载进行单独的计费,也可对支持双优先级的 UE进行很好的管 理。
基于上述又一实施例提供的一种拥塞控制的系统, 本发明实施例提 供了另一种 UE 30 ,该 UE 30与上述方法的第三个实施例提供的一种拥塞 控制的方法中的所述 UE相对应, 故对于各个单元的具体描述, 可以为上 述步骤的描述, 在此不再贅述。 如图 9所示, 该 UE 30包括: 处理单元 301 , 用于确定低优先级的接入请求受到拥塞或过载控制。 可选的, 处理单元 301 , 具体用于根据发送的所述低优先级的接入 请求被所述移动管理网元拒绝, 所述移动管理网元在接入请求响应消息 中携带针对所述 UE的时间指示信息, 所述 UE根据该时间指示信息启动 定时器, 在该定时器运行期间, 不能发送所述低优先级的接入请求; 或 从无线通信网络接收到对所述低优先级的接入请求启用扩展接入控 制 EAB的指示信息; 或
发送的低优先级的无线资源控制 RRC连接请求消息被无线通信网络 拒绝, 所述无线通信网络在 RRC连接响应消息中携带针对所述 UE的时 间指示信息, 所述 UE根据该时间指示信息启动定时器, 在该定时器运行 时所述 UE不能发送所述低优先级的 RRC连接请求; 确定所述低优先级的接入请求受到拥塞或过载控制。
生成单元 302 , 用于当所述处理单元 301 确定所述低优先级的接入 请求受到拥塞或过载控制时, 生成第一请求, 所述第一请求中包括低优 先级的接入请求受到拥塞或过载控制时请求接入的指示信息。 在本发明实施例中, 所述第一请求可以为移动管理请求, 也可以为 会话管理请求。 进一步地, 所述生成单元 302生成的第一请求中还包括: 优先级指 示信息, 所述优先级指示信息用于标识所述第一请求的优先级; 其中, 所述第一请求的优先级为正常优先级。 发送单元 303 , 用于将所述生成单元 302生成的所述第一请求发送 到移动管理网元;以使得所述移动管理网元和网关设备为所述 U E分配承 载,且在所述承载的上下文中保存用于标识所述承载为所述 U E的低优先 级的接入请求受到拥塞或过载控制时分配的承载的标识信息。
本发明实施例提供了一种 UE, UE发送携带低优先级的接入请求受 到拥塞或过载控制时请求接入的指示信息的第一请求到移动管理网元, 使得所述移动管理网元和网关设备为所述 UE分配承载,且在所述承载的 上下文中保存低优先级的接入请求受到拥塞或过载控制时分配承载的标 识信息。
基于上述又一实施例提供的一种拥塞控制的系统, 本发明实施例提 供了另一种网关设备 40,该网关设备 40与上述方法的第三个实施例提供 的一种拥塞控制的方法中的所述网关设备相对应, 故对于各个单元的具 体描述, 可以为上述步骤的描述, 在此不再贅述。 如图 10所示, 该网关 设备 40包括: 接收单元 401 , 用于接收移动管理网元发送的会话管理消息, 所述 会话管理消息包括用于指示当所述 UE 的低优先级接入请求受到拥塞或 过载控制时为所述 UE分配承载的标识信息。 其中, 网关设备与所述 UE本次接入请求所选择的接入点名称 APN 对应。
处理单元 402 , 用于根据所述接收单元 401 接收的所述会话管理消 息, 为所述 UE分配所述承载, 并在所述承载的上下文中保存用于指示所 述承载为当所述 UE 的低优先级接入请求受到拥塞或过载控制时分配承 载的标识信息。
生成单元 403 , 用于根据所述处理单元 402 的处理结果, 生成会话 管理响应消息,所述会话管理响应消息中携带已为所述 UE分配承载的指 示信息。
发送单元 404 , 用于将所述生成单元 403 生成的所述第一响应消息 发送到所述移动管理网元。 进一步地, 所述处理单元 402, 还用于在产生的所述承载的 CDR中 保存用于指示所述承载为当所述 UE 的低优先级的接入请求受到拥塞或 过载控制时为所述 UE分配的承载的标识信息。
通过该标识信息指示该 CDR是为所述 UE在低优先级的接入请求受 到拥塞或过载控制时分配的承载的 CDR。
示例的, CDR中的一个信息单元可以用于标识低优先级的接入请求 受到拥塞或过载控制时分配承载的的标识信息。 可选的, 该信息单元中 的一个标志位设置为 "低优先级的接入请求受到拥塞或过载控制时分配 承载" 时, 用于标识所述 UE在低优先级的接入请求受到拥塞或过载控制 时分配 载的 CDR。 本发明实施例提供了一种网关设备, 当接收到移动管理网元发送的 包括用于指示当所述 UE 的低优先级接入请求受到拥塞或过载控制时为 所述 UE分配承载的标识信息的会话管理消息时, 为所述 UE的接入请求 分配承载,并在该承载的上下文中保存用于指示所述承载为当所述 UE在 低优先级的接入请求受到拥塞或过载控制时分配承载的标识信息。 此外, 在该承载的 CDR中保存用于指示所述承载为当所述 UE在低优先级的接 入请求受到拥塞或过载控制时分配承载的标识信息, 这样可使网络运营 商能够进一步的对该类承载进行单独的计费, 也能够通过该承载的 CDR 统计和获得用户设备在低优先级的接入请求受到拥塞或过载控制时的接 入的信息, 从而可对支持双优先级的 UE进行 ^艮好的管理。 本发明实施例提供了一种拥塞控制的系统, 该系统包括移动管理网 元。 基于该系统, 本发明实施例提供了一种移动管理网元 50, 该移动管 理网元 50与上述方法的前两个实施例提供的一种拥塞控制的方法中的所 述移动管理网元相对应, 故对于各个模块的具体描述, 可以为上述步骤 的描述, 在此不再贅述。 如图 1 1所示, 该移动管理网元 50包括: 接收模块 501 , 用于接收 UE发送的第一请求, 所述第一请求中包括 第一优先级指示信息; 其中, 所述第一优先级指示信息用于标识所述第 一请求的优先级。 在本发明实施例中, 所述 UE 可被配置为支持双优先级, 即, 支持 低优先级和正常优先级的网络接入。所述 UE也可被配置为仅支持低优先 级的接入网络接入。
第一优先级指示信息可被封装在设备属性信元中, 其中所述第一请 求中包括所述设备属性信元。 例如: 当设备属性信元中的对应的标识位 设置为 "移动台配置为非接入层信令低优先级" 时, 表示所述第一请求 的优先级为低优先级; 当设备属性信元中的对应的标识位设置为 "移动 台不配置为非接入层信令低优先级" " 时, 表示所述第一请求的优先级 为正常优先级。 处理器 502, 用于根据所述接收模块 501 接收的所述第一请求的接 收时刻和所述第一优先级指示信息, 以及对应于所述 UE 的时间指示信 息, 以及与所述时间指示信息对应的第二优先级指示信息, 确定是否对 所述 UE的第一请求进行拥塞或过载控制。
移动管理网元可以在其保存的该 UE 的上下文中或者用于保存时间 指示信息的表格中查询是否存在对应于所述 UE或所述 UE和所述 UE选 择的 APN的时间指示信息, 及与所述时间指示信息对应的所述第二优先 级指示信息; 但本发明实施例并不限于此, 可以在任何存储器中进行保 存。
其中, 移动管理网元在所述 UE发送第一请求以前, 如果对该 UE执 行拥塞或过载控制并拒绝了所述 UE的请求, 则, 移动管理网元可以在其 保存的该 UE的上下文中保存对应于所述 UE或所述 UE和所述 UE选择 的 APN 的时间指示信息及与该时间指示信息对应的第二优先级指示信 息, 时间指示信息为时长或者时刻。 另外, 移动管理网元还可以在一个 用于保存时间指示信息的表格中保存该时间指示信息及与该时间指示信 息对应的第二优先级指示信息。 在本发明实施例中该类时间指示信息可 被称为移动管理时间指示信息。 需要说明的是, 所述第一请求可以为移动管理请求, 也可以为会话 管理请求; 当所述第一请求为移动管理请求时, 所述时间指示信息、 所 述第一时间指示信息对应于所述 UE; 当所述第一请求为会话管理请求 时, 所述时间指示信息、 所述第一时间指示信息对应于所述 UE 和所述 UE选择的 APN。
可选的, 所述处理器 502, 具体用于若接收模块 501 接收到所述第 一请求的时刻在所述时间指示信息所指示的时间范围内, 并且所述第一 优先级指示信息指示的优先级高于所述第二优先级指示信息指示的优先 级时; 确定对所述第一请求进行拥塞或过载控制。
可选的, 所述处理器 502, 具体用于若接收模块 501 接收到所述第 一请求的时刻在所述时间指示信息所指示的时间范围外时; 确定对所述 第一请求进行拥塞或过载控制。
在此情况下, 所述处理器 502 , 还用于修改所述时间指示信息为新 指定的时间指示信息, 修改所述第二优先级指示信息, 使得所述第二优 先级指示信息指示的优先级与所述第一优先级指示信息指示的优先级相 同。
示例的, 若移动管理网元中存在对应于所述 UE或所述 UE选择的 APN 的时间指示信息, 及与该时间指示信息对应的第二优先级指示信息 指示的优先级例如为低优先级; 在此情况下, 若处理器 502 获知接收模 块 501接收的第一请求的时刻在所述时间指示信, 所指示的时间范围内, 且所述第一优先级指示信息指示的优先级高于所述第二优先级指示信息 指示的优先级, 此时, 若处理器 502根据网络状况确定对所述 UE的第一 请求进行拥塞或过载控制, 则拒绝该 UE的第一请求, 并修改所述时间指 示信息为新指定的时间指示信息, 修改所述第二优先级指示信息, 使得 所述第二优先级指示信息指示的优先级与所述第一优先级指示信息指示 的优先级相同。
可选的, 所述处理器 502, 当所述接收模块 501 接收到所述第一请 求的所述接收时刻在所述时间指示信息所指示的时间范围内, 并且所述 第一优先级指示信息指示的优先级高于所述第二优先级指示信息指示的 优先级时; 确定对所述第一请求不进行拥塞或过载控制。 所述处理器 502, 具体用于当所述接收模块 501 接收到所述第一请 求的所述接收时刻在所述时间指示信, 所指示的时间范围外时, 确定对 所述第一请求不进行拥塞或过载控制。
进一步地, 所述处理器 502 , 还可以用于通过第一请求响应接受该 UE的第一请求。 可选的, 所述处理器 502, 具体用于当接收模块 501 接收到所述第 一请求的时刻在所述时间指示信息所指示的时间范围内, 并且所述第一 优先级指示信息指示的优先级低于或等于所述第二优先级指示信息指示 的优先级时; 则, 确定对所述第一请求进行拥塞或过载控制。
示例的, 若移动管理网元中存在对应于所述 UE或所述 UE和所述 UE选择的 APN的时间指示信息, 及与该时间指示信息对应的第二优先 级指示信息, 例如为正常优先级; 若处理器 502获知接收模块 501接收 到第一请求的时刻在所述时间指示信息所指示的时间范围内, 且所述第 一请求中携带的第一优先级指示信息指示为低优先级, 即所述第一优先 级指示信息指示的优先级低于或等于与所述第二优先级指示信息指示的 优先级, 则拒绝该 UE的第一请求。 可选的, 所述处理器 502 , 还用于初始设置所述时间指示信息及所 述第二优先级指示信息。 若不存在对应于所述 UE 的时间指示信息, 以及与所述时间指示信 息对应的所述第二优先级指示信息; 则, 当对所述 UE的第二请求进行拥 塞或过载控制时, 所述处理器 502 初始设置所述时间指示信息及所述第 二优先级指示信息。 需要说明的是, 此处所述第二请求可以为第一请求。
进一步地,所述处理器 502 ,具体用于在拒绝所述 UE的第二请求后, 初始设置所述时间指示信息和所述第二优先级指示信息, 使得所述第二 优先级指示信息指示的优先级与所述第二请求的优先级相同。
示例的,处理器 502之前没有设置过针对所述 UE或所述 UE和所述 UE 所选择的时间指示信息及与所述时间指示信息对应的所述第二优先 级指示信息, 当接收模块 501接收到所述 UE发送的第二请求消息后, 由 于对该 UE执行拥塞或过载控制拒绝了所述 UE的第二请求, 则, 处理器 502初始设置所述时间指示信息和所述第二优先级指示信息,使得所述第 二优先级指示信息指示的优先级与所述第二请求的优先级相同。 该初始 设置的所述时间指示信息和所述第二优先级指示信息可被保存在该 U E 的上下文中或者用于保存时间指示信息的表格中。
此外, 如图 12所示, 所述该移动管理网元 50还包括: 寄存器 503 ,用于存储所述对应于所述 UE及与所述第二优先级指示 信息。 本发明实施例提供了一种移动管理网元, 当移动管理网元根据接收 到的所述 UE的第一请求, 以及对应于所述 UE的时间指示信息及所述时 间指示信息对应的第二优先级指示信息, 当满足一定条件时, 可根据网 络状况判断是否对该 UE 的本次请求进行拥塞或过载控制; 否则拒绝该 UE的本次请求。 由此, 可解决网络只对低优先级的接入请求进行拥塞或 过载控制时,移动管理网元会拒绝支持双优先级的 UE的正常接入请求的 问题; 此外, 移动管理网元根据保存的时间指示信息和该时间指示信息 对应的优先级指示信息确定是否拒绝来自 UE的本次接入请求,不需要对 每一个接入请求都根据当前的拥塞 /控制策略确定是否拒绝 UE 的本次接 入请求, 提高了移动管理网元的处理效率。 本发明再一实施例提供了一种拥塞控制的系统, 该系统包括移动管 理网元、 UE及网关设备。 基于该系统, 本发明实施例提供了另一种移动管理网元 60 , 该移动 管理网元 60与上述方法的第三个实施例提供的一种拥塞控制的方法中的 所述移动管理网元相对应, 故对于各个模块的具体描述, 可以为上述步 骤的描述, 在此不再贅述。 该移动管理网元 60, 如图 13所示, 包括: 接收模块 601 ,用于当 UE的低优先级接入请求受到拥塞或过载控制 时, 接收所述 UE发送的具有正常优先级的第一请求。 在本发明实施例中, 所述第一请求可以为移动管理请求, 也可以为 会话管理请求 处理器 602, 用于根据接收模块 601 接收的所述第一请求生成会话 管理消息 ,所述会话管理消息中包括用于指示在所述 UE的低优先级接入 请求受到拥塞或过载控制时为所述 UE分配承载的标识信息。
可选的, 所述处理器 602可以根据所述接收模块 601接收的所述第 一请求中包括低优先级的接入请求受到拥塞或过载控制时请求接入的指 示信息,确定所述 UE是在低优先级的接入请求受到拥塞或过载控制时发 起的正常优先级的接入请求。 其中, 所述 UE 确定低优先级的接入请求受到拥塞或过载控制的情 况可以包括:
1 ) 、 UE发送的低优先级的接入请求被移动管理网元拒绝, 所述移 动管理网元在接入请求响应消息中携带针对所述 UE的时间指示信息,所 述 UE根据该时间指示信息启动定时器, 在该定时器运行期间, 不能发送 所述低优先级的接入请求。
2 )、 UE从无线通信网络接收到对所述低优先级的接入请求启用 E AB 的指示信息。 例如, RAN可以在其发送的广播消息中携带启用 EAB的指 示信息, UE通过接收所述广播消息获得启用 EAB的指示信息。
3 )、 UE发送的低优先级的 RRC连接请求消息被无线通信网络拒绝, 所述无线通信网络在 RRC连接响应消息中携带针对所述 UE的时间指示 信息, 所述 UE根据该时间指示信息启动定时器, 在该定时器运行时所述 UE不能发送所述低优先级的 RRC连接请求。 可选的, 所述接收模块 601 , 具体用于当所述 UE的低优先级接入请 求受到拥塞或过载控制时, 所述移动管理网元通知无线接入网络对所述 UE的低优先级的接入请求进行 EAB后,接收所述 UE发送的所述第一请 求。
在此情况下, 所述处理器 602可以根据所述接收模块 601 的信息确 定所述 UE 是在低优先级的接入请求受到拥塞或过载控制时发起的正常 优先级的接入请求。
可选的, 所述接收模块 601 , 具体用于当所述 UE的低优先级接入请 求受到拥塞或过载控制时, 接收所述第一请求的时刻在保存的对应于所 述 UE的时间指示信息所指示的时间范围内, 且所述 UE的第一请求的优 先级高于与所述时间指示信息对应的优先级指示信息指示的优先级。 在此情况下, 所述处理器 602可以根据所述接收模块 601 的信息确 定所述 UE 是在低优先级的接入请求受到拥塞或过载控制时发起的正常 优先级的接入请求。
发送模块 60, 用于将所述处理器 602生成的所述会话管理消息发送 到所述网关设备;以便于所述网关设备在为所述 UE分配的承载的上下文 中保存用于指示所述承载是在所述 UE 的低优先级的接入请求受到拥塞 或过载控制时分配的承载的标识信息。
进一步地, 所述处理器 602 , 还用于在产生的所述承载的计费数据 记录中保存用于指示所述承载是在所述 UE 的低优先级的接入请求受到 拥塞或过载控制时分配的承载的标识信息。 其中, 所述处理器 602 , 还用于在所述网关设备分配所述承载后, 在所述承载的上下文中保存用于指示所述承载是在所述 UE 的低优先级 的接入请求受到拥塞或过载控制时分配的承载的标识信息。
此外, 所述处理器 602, 用于当确定所述 UE是在低优先级的接入请 求受到拥塞或过载控制时发起的正常优先级的接入请求不是直接从第一 请求中获取时, 在所述网关设备分配所述承载前, 保存所述 UE的准备建 立的承载的信息, 所述承载的信息包括: 所述承载标识、 所述 UE在低优 先级的接入请求受到拥塞或过载控制的情况下请求接入的指示信息。
进一步地, 所述处理器 602, 还用于在产生的所述承载的 CDR中保 存用于指示所述承载是在所述 UE 的低优先级的接入请求受到拥塞或过 载控制时分配的承载的标识信息, 从而可以通过该标识信息指示该 CDR 为所述 UE 在低优先级的接入请求受到拥塞或过载控制时分配的承载的 CDR。 本发明实施例提供了一种移动管理网元, 根据 UE 发送的正常优先 级的第一请求,向网关设备包括用于指示在所述 UE的低优先级接入请求 受到拥塞或过载控制时为所述 UE分配承载的标识信息 ,使得网关设备为 所述 UE分配承载,并在该承载的上下文中保存用于指示所述承载是在所 述 UE 的低优先级的接入请求受到拥塞或过载控制时分配的承载的标识 信息, 当网关设备分配所述承载后, 移动管理网元也在该承载的上下文 中保存所述标识信息。此外,移动管理网元和网关设备可在该承载的 CDR 中保存用于指示所述承载是在所述 UE 的低优先级的接入请求受到拥塞 或过载控制时分配的承载的标识信息, 这样可使网络运营商能够进一步 的对该类承载进行单独的计费,也可对支持双优先级的 UE进行很好的管 理。
基于上述再一实施例提供的一种拥塞控制的系统, 本发明实施例提 供了另一种 UE 70 ,该 UE 70与上述方法的第三个实施例提供的一种拥塞 控制的方法中的所述 UE相对应, 故对于各个模块的具体描述, 可以为上 述步骤的描述, 在此不再贅述。 如图 14所示, 该 UE 70包括: 处理器 701 , 用于确定低优先级的接入请求受到拥塞或过载控制, 并生成第一请求, 所述第一请求中包括低优先级的接入请求受到拥塞或 过载控制时请求接入的指示信息。
可选的, 所述处理器 701 , 具体用于根据发送的所述低优先级的接 入请求被所述移动管理网元拒绝, 所述移动管理网元在接入请求响应消 息中携带针对所述 UE的时间指示信息, 所述 UE根据该时间指示信息启 动定时器, 在该定时器运行期间, 不能发送所述低优先级的接入请求; 或
从无线通信网络接收到对所述低优先级的接入请求启用扩展接入控 制 EAB的指示信息; 或
发送的低优先级的无线资源控制 RRC连接请求消息被无线通信网络 拒绝, 所述无线通信网络在 RRC连接响应消息中携带针对所述 UE的时 间指示信息, 所述 UE根据该时间指示信息启动定时器, 在该定时器运行 时所述 UE不能发送所述低优先级的 RRC连接请求; 确定所述低优先级的接入请求受到拥塞或过载控制, 并生成第一请 求, 所述第一请求中包括低优先级的接入请求受到拥塞或过载控制时请 求接入的指示信息。
进一步地, 所述处理器 701 生成的第一请求中还包括: 优先级指示 信息, 所述优先级指示信息用于标识所述第一请求的优先级; 其中, 所 述第一请求的优先级为正常优先级。 在本发明实施例中, 所述第一请求可以为移动管理请求, 也可以为 会话管理请求。 发送模块 702 , 用于将所述处理器 701 生成的所述第一请求发送到 移动管理网元;以使得以使得所述移动管理网元和网关设备为所述 U E分 配承载,且在所述承载的上下文中保存用于标识所述承载为所述 UE的低 优先级的接入请求受到拥塞或过载控制时分配的承载的标识信息。 本发明实施例提供了一种 UE, UE发送携带低优先级的接入请求受 到拥塞或过载控制时请求接入的指示信息的第一请求到移动管理网元, 使得所述移动管理网元和网关设备为所述 UE分配承载,且在所述承载的 上下文中保存低优先级的接入请求受到拥塞或过载控制时分配承载的标 识信息。
基于上述再一实施例提供的一种拥塞控制的系统, 本发明实施例提 供了另一种网关设备 80,该网关设备 80与上述方法的第三个实施例提供 的一种拥塞控制的方法中的所述网关设备相对应, 故对于各个模块的具 体描述, 可以为上述步骤的描述, 在此不再贅述。 如图 15所示, 该网关 设备 80包括: 接收模块 801 , 用于接收移动管理网元发送的会话管理消息, 所述 会话管理消息中包括用于指示当所述 UE 的低优先级接入请求受到拥塞 或过载控制时为所述 UE分配承载的标识信息。 其中, 网关设备与所述 UE本次接入请求所选择的 APN对应。
处理器 802, 用于根据所述接收模块 801接收的所述会话管理消息, 为所述 UE分配所述承载,并在所述承载的上下文中保存用于指示所述承 载为当所述 UE 的低优先级的接入请求受到拥塞或过载控制时分配所述 承载的标识信息; 并生成会话管理响应消息, 所述会话管理响应消息中 携带已为所述 UE分配所述承载的指示信息。 发送模块 803 , 用于将所述处理器 802生成的所述第一响应消息发 送到所述移动管理网元。 可选的, 所述发送模块, 用于将所述处理器生成的所述会话管理响 应消息发送到所述移动管理网元。
进一步地, 所述处理器 802, 还用于在产生的所述承载的 CDR中保 存用于指示所述承载为当所述 UE 的低优先级的接入请求受到拥塞或过 载控制时为所述 UE分配的所述承载的标识信息。
示例的, CDR中的一个信息单元可以用于标识低优先级的接入请求 受到拥塞或过载控制时分配承载的标识信息。 可选的, 该信息单元中的 一个标志位设置为 "低优先级的接入请求受到拥塞或过载控制时分配承 载" 时, 用于标识所述 UE在低优先级的接入请求受到拥塞或过载控制时 分配的 载的 CDR。 本发明实施例提供了一种网关设备, 当接收到移动管理网元发送的 包括用于指示当所述 UE 的低优先级接入请求受到拥塞或过载控制时为 所述 UE分配承载的标识信息的会话管理消息时, 为所述 UE的接入请求 分配承载,并在该承载的上下文中保存用于指示所述承载为当所述 UE在 低优先级的接入请求受到拥塞或过载控制时分配承载的标识信息。 此外, 在该承载的 CDR中保存用于指示所述承载为当所述 UE在低优先级的接 入请求受到拥塞或过载控制时分配承载的标识信息, 这样可使网络运营 商能够进一步的对该类承载进行单独的计费, 也能够通过该承载的 CDR 统计和获得用户设备在低优先级的接入请求受到拥塞或过载控制时的接 入的信息, 从而可对支持双优先级的 UE进行 ^艮好的管理。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限于 此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易 想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保 护范围应以所述权利要求的保护范围为准。

Claims

权 利 要 求 书
1、 一种拥塞控制的方法, 其特征在于, 包括:
移动管理网元接收用户设备 UE 发送的第一请求, 所述第一请求中 包括第一优先级指示信息, 其中, 所述第一优先级指示信息用于标识所 述第一请求的优先级;
根据接收到所述第一请求的接收时刻和所述第一优先级指示信息, 以及对应于所述 UE 的时间指示信息及所述时间指示信息对应的第二优 先级指示信息, 确定是否对所述第一请求进行拥塞或过载控制。
2、 根据权利要求 1所述的方法, 其特征在于, 所述根据接收到所述 第一请求的接收时刻和所述第一优先级指示信息,以及对应于所述 UE的 时间指示信息及所述时间指示信息对应的第二优先级指示信息, 确定是 否对所述第一请求进行拥塞或过载控制, 包括:
当所述接收时刻在所述时间指示信息所指示的时间范围内, 并且所 述第一优先级指示信息指示的优先级低于或等于所述第二优先级指示信 息指示的优先级时, 确定对所述第一请求进行拥塞或过载控制。
3、 根据权利要求 1所述的方法, 其特征在于, 所述根据接收到所述 第一请求的接收时刻和所述第一优先级指示信息,以及对应于所述 UE的 时间指示信息及所述时间指示信息对应的第二优先级指示信息, 确定是 否对所述第一请求进行拥塞或过载控制, 包括:
当所述接收时刻在所述时间指示信息所指示的时间范围内, 并且所 述第一优先级指示信息指示的优先级高于所述第二优先级指示信息指示 的优先级时, 确定对所述第一请求进行拥塞或过载控制; 或者,
当所述接收时刻在所述时间指示信, 所指示的时间范围外时, 确定 对所述第一请求进行拥塞或过载控制。
4、 根据权利要求 1所述的方法, 其特征在于, 所述根据接收到所述 第一请求的接收时刻和所述第一优先级指示信息,以及对应于所述 UE的 时间指示信息及所述时间指示信息对应的优先级指示信息, 确定是否对 所述第一请求进行拥塞或过载控制, 包括:
当所述接收时刻在所述时间指示信息所指示的时间范围内, 并且所 述第一优先级指示信息指示的优先级高于所述第二优先级指示信息指示 的优先级时, 确定对所述第一请求不进行拥塞或过载控制; 或者,
当所述接收时刻在所述时间指示信, 所指示的时间范围外时, 确定 对所述第一请求不进行拥塞或过载控制。
5、 根据权利要求 3所述的方法, 其特征在于, 还包括:
修改所述时间指示信息为新指定的时间指示信息, 修改所述第二优 先级指示信息, 使得所述第二优先级指示信息指示的优先级与所述第一 优先级指示信息指示的优先级相同。
6、 根据权利要求 1所述的方法, 其特征在于, 还包括:
所述移动性管理网元初始设置所述时间指示信息及所述第二优先级 指示信息。
7、 根据权利要求 6所述的方法, 其特征在于, 所述初始设置所述时 间指示信息及所述第二优先级指示信息, 包括:
在拒绝所述 UE 的第二请求后, 初始设置所述时间指示信息和所述 第二优先级指示信息, 使得所述第二优先级指示信息指示的优先级与所 述第二请求的优先级相同。
8、 根据权利要求 1-7所述的方法, 其特征在于,
所述第一请求为移动管理请求; 或者,
所述第一请求为会话管理请求,所述时间指示信息为对应于所述 U E 和所述 UE选择的接入点名称 APN的时间指示信息。
9、 根据权利要求 1-8 所述的方法, 其特征在于, 所述对应于所述 UE的时间指示信息, 及所述第二优先级指示信息, 被保存在所述移动管 理网元中。
10、 一种拥塞控制的方法, 其特征在于, 包括:
当用户设备 UE 的低优先级接入请求受到拥塞或过载控制时, 移动 管理网元接收所述 U E发送的具有正常优先级的第一请求;
根据所述第一请求, 所述移动管理网元向所述网关设备发送会话管 理消息;
所述会话管理消息中包括用于指示在所述 UE 的低优先级接入请求 受到拥塞或过载控制时为所述 UE分配承载的标识信息;以便于所述网关 设备在为所述 UE 分配的承载的上下文中保存用于指示所述承载是在所 述 UE 的低优先级的接入请求受到拥塞或过载控制时分配的承载的标识 信息。
1 1、 根据权利要求 10所述的方法, 其特征在于, 还包括: 在产生的 所述承载的计费数据记录中保存用于指示所述承载是在所述 UE 的低优 先级的接入请求受到拥塞 /过载拥塞或过载控制时分配的承载的标识信 息。
12、 根据权利要求 10至 11任一项所述的方法, 其特征在于, 所述移动管理网元接收所述 UE 发送的具有正常优先级的第一接入 请求, 包括:
在所述移动管理网元通知无线接入网络对所述 UE 的低优先级的接 入请求进行扩展接入控制 EAB后, 所述移动管理网元接收所述 UE发送 的所述第一请求。
13、 根据权利要求 10所述的方法, 其特征在于,
接收所述第一请求的时刻在保存的对应于所述 UE 的时间指示信息 所指示的时间范围内,且所述 UE的第一请求的优先级高于与所述时间指 示信息对应的优先级指示信息指示的优先级。
14、 一种拥塞控制的方法, 其特征在于, 包括:
用户设备 UE确定低优先级的接入请求受到拥塞或过载控制; 所述 UE 向移动管理网元发送第一请求, 所述第一请求中包括低优 先级的接入请求受到拥塞或过载控制时请求接入的指示信息; 以使得所 述移动管理网元和网关设备为所述 U E分配承载,且在所述承载的上下文 中保存用于标识所述承载为所述 UE 的低优先级的接入请求受到拥塞或 过载控制时分配的承载的标识信息。
15、 根据权利要求 14所述的方法, 其特征在于, 所述第一请求中包 括: 优先级指示信息, 所述优先级指示信息用于标识所述第一请求的优 先级; 其中, 所述第一请求的优先级为正常优先级。
16、 根据权利要求 14或 15所述的方法, 其特征在于, 所述确定低 优先级的接入请求受到拥塞或过载控制, 包括:
发送的所述低优先级的接入请求被所述移动管理网元拒绝, 所述移 动管理网元在接入请求响应消息中携带针对所述 UE的时间指示信息,所 述 UE根据该时间指示信息启动定时器, 在该定时器运行期间, 不能发送 所述低优先级的接入请求; 或
从无线接入网络接收到对所述低优先级的接入请求启用扩展接入控 制 EAB的指示信息; 或
发送的低优先级的无线资源控制 RRC连接请求消息被无线通信网络 拒绝, 所述无线通信网络在 RRC连接响应消息中携带针对所述 UE的时 间指示信息, 所述 UE根据该时间指示信息启动定时器, 在该定时器运行 时所述 UE不能发送所述低优先级的 RRC连接请求。
17、 一种拥塞控制的方法, 其特征在于, 包括:
网关设备接收移动管理网元发送的会话管理消息, 所述会话管理消 息包括用于指示当所述 UE 的低优先级接入请求受到拥塞或过载控制时 为所述 UE分配承载的标识信息;
为所述 UE 分配承载, 并在所述承载的上下文中保存用于指示所述 承载为当所述 UE 的低优先级接入请求受到拥塞或过载控制时分配的承 载的标识信息;
向所述移动管理网元发送会话管理响应消息, 所述会话管理响应消 息中携带已为所述 UE分配所述承载的指示信息。
18、 根据权利要求 17所述的方法, 其特征在于, 还包括: 在产生的 所述承载的计费数据记录中保存用于指示所述承载为当所述 UE 的低优 先级接入请求受到拥塞或过载控制时为所述 U E分配的承载的标识信息。
19、 一种移动管理网元, 其特征在于, 包括:
接收单元, 用于接收用户设备 UE发送的第一请求, 所述第一请求 中包括第一优先级指示信息; 其中, 所述第一优先级指示信息用于标识 所述第一请求的优先级;
处理单元, 用于根据所述接收单元接收到所述第一请求的接收时刻 和所述第一优先级指示信息,以及对应于所述 U E的时间指示信息及所述 时间指示信息对应的第二优先级指示信息, 确定是否对所述第一请求进 行拥塞或过载控制。
20、 根据权利要求 19所述的移动管理网元, 其特征在于, 所述处理 单元, 具体用于当所述接收单元接收到所述第一请求的接收时刻在所述 时间指示信息所指示的时间范围内, 并且所述第一优先级指示信息指示 的优先级低于或等于所述第二优先级指示信息指示的优先级时; 确定对 所述第一请求进行拥塞或过载控制。
21、 根据权利要求 19所述的移动管理网元, 其特征在于, 所述处理 单元, 具体用于当所述接收单元接收到所述第一请求的接收时刻在所述 时间指示信息所指示的时间范围内, 并且所述第一优先级指示信息指示 的优先级高于所述第二优先级指示信息指示的优先级时; 确定对所述第 一请求进行拥塞或过载控制; 或者,
当所述接收单元接收到所述第一请求的接收时刻在所述时间指示信 息所指示的时间范围外时, 确定对所述第一请求进行拥塞或过载控制。
22、 根据权利要求 19所述的移动管理网元, 其特征在于, 所述处理 单元, 具体用于当所述接收单元接收到所述第一请求的接收时刻在所述 时间指示信息所指示的时间范围内, 并且所述第一优先级指示信息指示 的优先级高于所述第二优先级指示信息指示的优先级时; 确定对所述第 一请求不进行拥塞或过载控制; 或者,
当所述接收单元接收到所述第一请求的接收时刻在所述时间指示信 息所指示的时间范围外时, 确定对所述第一请求不进行拥塞或过载控制。
23、 根据权利要求 21所述的移动管理网元, 其特征在于, 所述处理 单元, 还用于修改所述时间指示信息为新指定的时间指示信息, 修改所 述第二优先级指示信息, 使得所述第二优先级指示信息指示的优先级与 所述第一优先级指示信息指示的优先级相同。
24、 根据权利要求 19所述的移动管理网元, 其特征在于, 所述处理 单元, 还用于初始设置所述时间指示信息及所述第二优先级指示信息。
25、 根据权利要求 24所述的移动管理网元, 其特征在于, 所述处理 单元, 具体用于在拒绝所述 UE的第二请求后, 初始设置所述时间指示信 息和所述第二优先级指示信息, 使得所述第二优先级指示信息指示的优 先级与所述第二请求的优先级相同。
26、 根据权利要求 19至 25任一项所述的移动管理网元, 其特征在 于, 还包括:
存储单元, 用于存储所述对应于所述 UE 的时间指示信息及所述第 二优先级指示信息。
27、 一种移动管理网元, 其特征在于, 包括:
接收单元, 用于当用户设备 UE 的低优先级接入请求受到拥塞或过 载控制时, 接收所述 UE发送的具有正常优先级的第一请求;
生成单元, 用于根据所述接收单元接收的所述第一请求生成会话管 理消息,所述会话管理消息中包括用于指示在所述 UE的低优先级接入请 求受到拥塞或过载控制时为所述 U E分配承载的标识信息;
发送单元, 用于将所述生成单元生成的所述会话管理消息发送到所 述网关设备;以便于所述网关设备在为所述 UE分配的承载的上下文中保 存用于指示所述承载是在所述 UE 的低优先级的接入请求受到拥塞或过 载控制时分配的承载的标识信息。
28、 根据权利要求 27所述的移动管理网元, 其特征在于, 还包括处 理单元, 用于在产生的所述承载的计费数据记录中保存用于指示所述承 载是在所述 UE 的低优先级的接入请求受到拥塞或过载控制时分配的承 载的标识信息。
29、 根据权利要求 27或 28所述的移动管理网元, 其特征在于, 所 述接收单元,具体用于当所述 UE的低优先级接入请求受到拥塞或过载控 制时,所述移动管理网元通知无线接入网络对所述 UE的低优先级的接入 请求进行扩展接入控制 EAB后, 接收所述 UE发送的所述第一请求。
30、 根据权利要求 27所述的移动管理网元, 其特征在于,
所述接收单元, 具体用于当所述 UE 的低优先级接入请求受到拥塞 或过载控制时,接收所述第一请求的时刻在保存的对应于所述 UE的时间 指示信息所指示的时间范围内,且所述 UE的第一请求的优先级高于与所 述时间指示信, 对应的优先级指示信, 指示的优先级。
31、 一种用户设备 UE, 其特征在于, 包括:
处理单元, 用于确定低优先级的接入请求受到拥塞或过载控制; 生成单元, 用于当所述处理单元确定所述低优先级的接入请求受到 拥塞或过载控制时, 生成第一请求, 所述第一请求中包括低优先级的接 入请求受到拥塞或过载控制时请求接入的指示信息;
发送单元, 用于将所述生成单元生成的所述第一请求发送到移动管 理网元; 以使得所述移动管理网元和网关设备为所述 UE分配承载, 且在 所述承载的上下文中保存用于标识所述承载为所述 UE 的低优先级的接 入请求受到拥塞或过载控制时分配的所述承载的标识信息。
32、 根据权利要求 31所述的 UE, 其特征在于, 所述生成单元生成 的第一请求中还包括: 优先级指示信息, 所述优先级指示信息用于标识 所述第一请求的优先级; 其中, 所述第一请求的优先级为正常优先级。
33、根据权利要求 31或 32所述的 UE,其特征在于, 所述处理单元, 具体用于根据发送的所述低优先级的接入请求被所述移动管理网元拒 绝,所述移动管理网元在接入请求响应消息中携带针对所述 U E的时间指 示信息,所述 U E根据该时间指示信息启动定时器,在该定时器运行期间 , 不能发送所述低优先级的接入请求; 或 从无线通信网络接收到对所述低优先级的接入请求启用扩展接入控 制 EAB的指示信息; 或
发送的低优先级的无线资源控制 RRC连接请求消息被无线通信网络 拒绝, 所述无线通信网络在 RRC连接响应消息中携带针对所述 UE的时 间指示信息, 所述 UE根据该时间指示信息启动定时器, 在该定时器运行 时所述 UE不能发送所述低优先级的 RRC连接请求;
确定所述低优先级的接入请求受到拥塞或过载控制。
34、 一种网关设备, 其特征在于, 包括:
接收单元, 用于接收移动管理网元发送的会话管理消息, 所述会话 管理消息包括用于指示当所述 UE 的低优先级接入请求受到拥塞或过载 控制时为所述 UE分配承载的标识信息;
处理单元, 用于根据所述接收单元接收的所述会话管理消息, 为所 述 U E分配承载,并在所述承载的上下文中保存用于指示所述承载为当所 述 U E的低优先级接入请求受到拥塞或过载控制时分配承载的标识信息; 生成单元, 用于根据所述处理单元的处理结果, 生成会话管理响应 消息,所述会话管理响应消息中携带已为所述 UE分配所述承载的指示信 息;
发送单元, 用于将所述生成单元生成的所述第一响应消息发送到所 述移动管理网元。
35、根据权利要求 34所述的网关设备, 其特征在于, 所述处理单元, 还用于在产生的所述承载的计费数据记录中保存用于指示所述承载为当 所述 UE的低优先级的接入请求受到拥塞或过载控制时为所述 UE分配的 所述承载的标识信息。
36、 一种移动管理网元, 其特征在于, 包括:
接收模块, 用于接收用户设备 UE发送的第一请求, 所述第一请求 中包括第一优先级指示信息; 其中, 所述第一优先级指示信息用于标识 所述第一请求的优先级;
处理器, 用于根据所述接收模块接收到所述第一请求的接收时刻和 所述第一优先级指示信息,以及对应于所述 UE的时间指示信息及与所述 时间指示信息对应的所述第二优先级指示信息, 确定是否对所述第一请 求进行拥塞或过载控制。
37、 根据权利要求 36所述的移动管理网元, 其特征在于, 所述处理 器, 具体用于当所述接收模块接收到所述第一请求的接收时刻在所述时 间指示信息所指示的时间范围内, 并且所述第一优先级指示信息指示的 优先级低于或等于所述第二优先级指示信息指示的优先级时; 确定对所 述第一请求进行拥塞或过载控制。
38、 根据权利要求 36所述的移动管理网元, 其特征在于, 所述处理 器, 具体用于当所述接收模块接收到所述第一请求的接收时刻在所述时 间指示信息所指示的时间范围内, 并且所述第一优先级指示信息指示的 优先级高于所述第二优先级指示信息指示的优先级时; 确定对所述第一 请求进行拥塞或过载控制; 或者,
当所述接收模块接收到所述第一请求的接收时刻在所述时间指示信 息所指示的时间范围外时, 确定对所述第一请求进行拥塞或过载控制。
39、 根据权利要求 36所述的移动管理网元, 其特征在于, 所述处理 器, 具体用于当所述接收模块接收到所述第一请求的接收时刻在所述时 间指示信息所指示的时间范围内, 并且所述第一优先级指示信息指示的 优先级高于所述第二优先级指示信息指示的优先级时; 确定对所述第一 请求不进行拥塞或过载控制; 或者,
当所述接收模块接收到所述第一请求的所述接收时刻在所述时间指 示信息所指示的时间范围外时, 确定对所述第一请求不进行拥塞或过载 控制。
40、 根据权利要求 38所述的移动管理网元, 其特征在于, 所述处理 器, 还用于修改所述时间指示信息为新指定的时间指示信息, 修改所述 第二优先级指示信息, 使得所述第二优先级指示信息指示的优先级与所 述第一优先级指示信息指示的优先级相同。
41、 根据权利要求 36所述的移动管理网元, 其特征在于, 所述处理 器, 还用于初始设置所述时间指示信息及所述第二优先级指示信息。
42、 根据权利要求 41所述的移动管理网元, 其特征在于, 所述处理 器, 具体用于在拒绝所述 UE的第二请求后, 初始设置所述时间指示信息 和所述第二优先级指示信息, 使得所述第二优先级指示信息指示的优先 级与所述第二请求的优先级相同。
43、 根据权利要求 36至 42任一项所述的移动管理网元, 其特征在 于, 还包括:
寄存器, 用于存储所述对应于所述 UE 的时间指示信息及所述第二 优先级指示信息。
44、 一种移动管理网元, 其特征在于, 包括:
接收模块, 用于当用户设备 UE 的低优先级接入请求受到拥塞或过 载控制时, 接收所述 UE发送的具有正常优先级的第一请求;
处理器,用于根据接收模块接收的所述第一请求生成会话管理消息, 所述会话管理消息中包括用于指示在所述 UE 的低优先级接入请求受到 拥塞或过载控制时为所述 U E分配承载的标识信息;
发送模块, 用于将所述处理器生成的所述会话管理消息发送到所述 网关设备;以便于所述网关设备在为所述 U E分配的承载的上下文中保存 用于指示所述承载是在所述 UE 的低优先级的接入请求受到拥塞或过载 控制时分配的承载的标识信息。
45、 根据权利要求 44所述的移动管理网元, 其特征在于, 所述处理 器, 还用于在产生的所述承载的计费数据记录中保存用于指示所述承载 是在所述 UE 的低优先级的接入请求受到拥塞或过载控制时分配的承载 的标识信息。
46、 根据权利要求 44或 45所述的移动管理网元, 其特征在于, 所 述接收模块,具体用于当用户设备 UE的低优先级接入请求受到拥塞或过 载控制时,所述移动管理网元通知无线接入网络对所述 UE的低优先级的 接入请求进行扩展接入控制 EAB后,接收所述 UE发送的所述第一请求。
47、 根据权利要求 44任一项所述的移动管理网元, 其特征在于, 所 述接收模块,具体用于当所述 UE的低优先级接入请求受到拥塞或过载控 制时,接收所述第一请求的时刻在保存的对应于所述 UE的时间指示信息 所指示的时间范围内,且所述 UE的第一请求的优先级高于与所述时间指 示信息对应的优先级指示信息指示的优先级。
48、 一种用户设备 UE, 其特征在于, 包括:
处理器, 用于确定低优先级的接入请求受到拥塞或过载控制, 并生 成第一请求, 所述第一请求中包括低优先级的接入请求受到拥塞或过载 控制时请求接入的指示信息;
发送模块, 用于将所述处理器生成的所述第一请求发送到移动管理 网元; 以使得所述移动管理网元和网关设备为用户设备 UE分配承载, 且 在所述承载的上下文中保存用于标识所述承载为所述 UE 的低优先级的 接入请求受到拥塞或过载控制时分配的承载的标识信息。
49、 根据权利要求 48所述的 UE, 其特征在于, 所述处理器生成的 第一请求中还包括: 优先级指示信息, 所述优先级指示信息用于标识所 述第一请求的优先级; 其中, 所述第一请求的优先级为正常优先级。
50、 根据权利要求 48或 49所述的 UE, 其特征在于, 所述处理器, 具体用于根据发送的所述低优先级的接入请求被所述移动管理网元拒 绝,所述移动管理网元在接入请求响应消息中携带针对所述 U E的时间指 示信息,所述 U E根据该时间指示信息启动定时器,在该定时器运行期间 , 不能发送所述低优先级的接入请求; 或
从无线通信网络接收到对所述低优先级的接入请求启用扩展接入控 制 EAB的指示信息; 或
发送的低优先级的无线资源控制 RRC连接请求消息被无线通信网络 拒绝, 所述无线通信网络在 RRC连接响应消息中携带针对所述 UE的时 间指示信息, 所述 UE根据该时间指示信息启动定时器, 在该定时器运行 时所述 UE不能发送所述低优先级的 RRC连接请求;
确定所述低优先级的接入请求受到拥塞或过载控制, 并生成第一请 求, 所述第一请求中包括低优先级的接入请求受到拥塞或过载控制时请 求接入的指示信息。
51、 一种网关设备, 其特征在于, 包括:
接收模块, 用于接收移动管理网元发送的会话管理消息, 所述会话 管理消息中包括用于指示当所述 UE 的低优先级接入请求受到拥塞或过 载控制时为所述 UE分配承载的标识信息;
处理器, 用于根据所述接收模块接收的所述会话管理消息, 为所述 UE分配所述承载, 并在所述承载的上下文中保存用于指示所述承载为当 所述 UE 的低优先级的接入请求受到拥塞或过载控制时分配所述承载的 标识信息; 并生成会话管理响应消息, 所述会话管理响应消息中携带已 为所述 UE分配所述承载的指示信息;
发送模块, 用于将所述处理器生成的所述第一响应消息发送到所述 移动管理网元。
52、 根据权利要求 51所述的网关设备, 其特征在于, 所述处理器, 还用于在产生的所述承载的计费数据记录中保存用于指示所述承载为当 所述 UE的低优先级的接入请求受到拥塞或过载控制时为所述 UE分配的 所述承载的标识信息。
53、 一种拥塞控制的系统, 其特征在于, 包括: 权利要求 19至权利 要求 26任一项所述的移动管理网元, 或权利要求 36至权利要求 43任一 项所述的移动管理网元。
54、 一种拥塞控制的系统, 其特征在于, 包括: 权利要求 27至权利 要求 30任一项所述的移动管理网元、 权利要求 31至权利要求 33任一项 所述的用户设备 UE、 及权利要求 34至权利要求 35任一项所述的网关设 备; 或
权利要求 44至权利要求 47任一项所述的移动管理网元、 权利要求 48至权利要求 50任一项所述的用户设备 UE、及权利要求 51至权利要求 52任一项所述的网关设备。
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