CN103442425A - Paging notification method, paging method and paging device - Google Patents
Paging notification method, paging method and paging device Download PDFInfo
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Abstract
The embodiment of the invention provides a paging notification method, a paging method and a paging device. When an SGW needs to send data to UE, the paging notification method, the paging method and the paging device are used for reducing internetwork consumption, synchronizing internetwork data and improving network efficiency under the condition that S1-U interface connection is released. The paging notification method includes the steps that the SGW receives data packages which are sent to the UE; the SGW caches the data packages and sends downlink data notification messages to an MME which serves the UE, and the downlink data notification messages are used for notifying the MME of paging the UE. Time for caching the data packages by the SGW is larger than or equal to paging time for paging the UE by the MME.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method and apparatus of indicating paging, paging.
Background technology
At Long Term Evolution (Long Term Evolved, LTE) in network, as S1 interface in the user plane (S1User Plane Interface, during Connection Release S1-U), if gateway (Serving Gateway, SGW) receive needs and be handed down to subscriber equipment (User Equipment, UE) downlink data packet, SGW just need to carry out buffer memory to downlink data packet, and notice Mobility Management Entity (Mobility Management Entity, MME) UE is carried out to paging, concrete steps as shown in Figure 1, comprising:
S11, SGW receives a downlink data packet that sends to UE, but is connected and does not exist with user's face of this user.SGW can these data of buffer memory.
S12, SGW sends downlink data indication (Downlink Data Notification) message to MME.
S13, MME replys the downlink data indication to SGW and replys (Downlink Data Notification Acknowledge) message.
S14, MME sends paging (Paging) message to evolved base station (evolved NodeB, eNB).
S15, eNB sends paging (Paging) message to UE.
S16, UE triggers service request procedure (Service Request Procedure) to network side; SGW starts to send downlink data (Downlink Data) after service request procedure completes.
For SGW, the maximum time of buffer memory downlink data packet, after SGW sends downlink data indication (Downlink Data Notification) message to MME, the configuration by MME of the number of times of paging and time determined by the configuration decision of SGW.Due to the independence of network element and in each network element configuration parameter inconsistent, be easy to cause time asynchronous of time of SGW buffer memory downlink data packet and MME paging.If the time of SGW buffer memory downlink data packet is less than the time of MME paging, think that at SGW to issue data overtime failed and in packet discard, MME is but still carrying out paging, caused between the net of call signaling and consumed, if after simultaneously follow-up MME paging UE success, SGW but can send out without packet, and the above LTE network quality that all caused descends.
Summary of the invention
The embodiment of the present invention provides a kind of method and apparatus of indicating paging, paging, in the situation that the S1-U interface Connection Release, when SGW need to send data to UE, reduces between the net of call signaling and consumes, and information between Synchronization Network, promote network efficiency.
A kind of method of paging of indicating that the embodiment of the present invention provides comprises:
Gateway SGW receives for sending to the packet of a user equipment (UE);
The described packet of described SGW buffer memory, and send the downlink data Indication message to the Mobility Management Entity MME that serves this UE, be used to indicate described this UE of MME paging;
Wherein, the time of the described packet of described SGW buffer memory is greater than or equal to the paging time of described this UE of MME paging.
Like this, the time of the described packet of described SGW buffer memory is greater than or equal to the paging time of described this UE of MME paging, make in the process of UE transmission data, internetwork device in time can be synchronous, avoid SGW MME after the data of deleting buffer memory to proceed paging, saved the paging resource requirement, and, avoid UE to initiate the situation that the countless certificates of SGW can be sent out to occur after service request procedure according to paging, improved network efficiency.
Preferably, while receiving the service request that this UE sends according to described paging within the time of the described packet of buffer memory as SGW, to this UE, send described packet.
In the present invention, following two kinds of modes are proposed for determining the time of the data cached bag of SGW:
In a kind of mode, the time of the data cached bag of SGW and described paging time are pre-configured;
In another kind of mode, in described downlink data Indication message, comprise the maximum paging time, in order to indicate described MME, determine the paging time of this UE of paging according to the described maximum paging time; Wherein, the described maximum paging time equals the time of the described packet of described SGW buffer memory.
Like this, when SGW can determine the time of data cached bag voluntarily, MME also can adjust the rational paging time of determining in time according to the downlink data Indication message of SGW.
Preferably, described SGW determines the time of the described packet of buffer memory according to data traffic.
Preferably, if described SGW, within the time of the described packet of buffer memory, does not receive the service request from this UE, empty the described packet of buffer memory.
Like this, simplify the flow process of data re-transmitting, improved the service quality of network.
A kind of paging method that the embodiment of the present invention provides comprises:
Mobility Management Entity MME receives the downlink data Indication message that is used to indicate described MME calling user device UE that gateway SGW sends;
Described MME is identified for the paging time of this UE of paging, and according to this paging time, according to described downlink data Indication message, the described UE of paging;
Wherein, the described paging time is less than or equal to the time of the packet that the described downlink data Indication message of SGW buffer memory is corresponding.
Like this, the described paging time is less than or equal to the time of the packet that the described downlink data Indication message of SGW buffer memory is corresponding, make in the process of UE transmission data, internetwork device in time can be synchronous, the data that while having avoided the MME paging, SGW has deleted buffer memory, saved MME waste paging resource, and, avoid UE to initiate the situation that the countless certificates of SGW can be sent out to occur after service request procedure according to paging, improved network efficiency.
In the present invention, following two kinds of modes are proposed for determining the described paging time of MME side:
In a kind of mode, the time of described paging time and the data cached bag of SGW is pre-configured;
In another kind of mode, in described downlink data Indication message, comprise the maximum paging time; Wherein, the described maximum paging time equals the time of the described packet of described SGW buffer memory; Described MME is identified for the paging time of this UE of paging, comprising: described MME, according to the described maximum paging time of carrying in described downlink data Indication message, determines the paging time of the described UE of paging.
Like this, MME can adjust the rational paging time of determining in time according to the downlink data Indication message of SGW.
A kind of gateway SGW equipment that the embodiment of the present invention provides comprises:
The data receiver unit, for receiving for sending to the packet of a user equipment (UE);
The indication paging unit, for the described packet of buffer memory, and send the downlink data Indication message to the Mobility Management Entity MME that serves this UE, is used to indicate described this UE of MME paging; Wherein, the time of the described packet of described SGW buffer memory is greater than or equal to the paging time of described this UE of MME paging.
Like this, the time of the described packet of described SGW buffer memory is greater than or equal to the paging time of described this UE of MME paging, make in the process of UE transmission data, internetwork device in time can be synchronous, avoid SGW MME after the data of deleting buffer memory to proceed paging, saved the paging resource requirement, and, avoid UE to initiate the situation that the countless certificates of SGW can be sent out to occur after service request procedure according to paging, improved network efficiency.
Preferably, this equipment also comprises: data transmission unit when receiving the service request that this UE sends according to described paging in the time when at the described packet of buffer memory, sends described packet to this UE.
In the present invention, propose following two kinds of modes and determine the time of data cached bag for SGW equipment:
In a kind of mode, the time of the data cached bag of SGW and described paging time are pre-configured.
In another kind of mode, in described downlink data Indication message, comprise the maximum paging time, in order to indicate described MME, determine the paging time of this UE of paging according to the described maximum paging time; Wherein, the described maximum paging time equals the time of the described packet of described SGW buffer memory.
Like this, when SGW can determine the time of data cached bag voluntarily, MME also can adjust the rational paging time of determining in time according to the downlink data Indication message of SGW.
Preferably, this equipment also comprises: the cache-time determining unit, and for determine the time of the described packet of buffer memory according to data traffic.
Preferably, this equipment also comprises: the timeout treatment unit, if, in the time at the described packet of buffer memory, do not receive the service request from this UE, and, empty the described packet of buffer memory.
Like this, simplify the flow process of data re-transmitting, improved the service quality of network.
A kind of Mobility Management Entity MME equipment that the embodiment of the present invention provides comprises:
Paging indication receiving element, the downlink data Indication message that is used to indicate this MME calling user device UE sent for receiving gateway SGW;
Paging unit, for being identified for the paging time of this UE of paging, and according to this paging time, according to described downlink data Indication message, the described UE of paging;
Wherein, the described paging time is less than or equal to the time of the packet that the described downlink data Indication message of SGW buffer memory is corresponding.
Like this, the described paging time is less than or equal to the time of the packet that the described downlink data Indication message of SGW buffer memory is corresponding, make in the process of UE transmission data, internetwork device in time can be synchronous, the data that while having avoided the MME paging, SGW has deleted buffer memory, saved the paging resource requirement, and, avoid UE to initiate the situation that the countless certificates of SGW can be sent out to occur after service request procedure according to paging, improved network efficiency.
In the present invention, propose following two kinds of modes and determine the paging time for MME equipment:
In a kind of mode, the time of described paging time and the data cached bag of SGW is pre-configured;
In another kind of mode, in described downlink data Indication message, comprise the maximum paging time; Wherein, the described maximum paging time equals the time of the described packet of described SGW buffer memory;
Described paging unit is for the paging that is identified for this UE of paging during the time, specifically for:
According to the described maximum paging time of carrying in described downlink data Indication message, be identified for the paging time of this UE of paging.
Like this, MME can adjust the rational paging time of determining in time according to the downlink data Indication message of SGW.
The accompanying drawing explanation
Fig. 1 sends the schematic flow sheet of downlink data in prior art;
The schematic flow sheet of the method for the indication paging that Fig. 2 provides for the embodiment of the present invention;
The schematic flow sheet of the method for the paging that Fig. 3 provides for the embodiment of the present invention;
The schematic flow sheet when SGW that Fig. 4 provides for the present invention's one specific embodiment transmits the data success;
The schematic flow sheet when SGW that Fig. 5 provides for the present invention's one specific embodiment transmits data failure;
The schematic flow sheet of mutual maximum paging time between the SGW that Fig. 6 provides for the present invention's one specific embodiment and MME;
The structural representation of the SGW equipment that Fig. 7 provides for the embodiment of the present invention;
Another structural representation of the SGW equipment that Fig. 8 provides for the embodiment of the present invention;
Another structural representation of the SGW equipment that Fig. 9 provides for the embodiment of the present invention;
Another structural representation of the SGW equipment that Figure 10 provides for the embodiment of the present invention;
The structural representation of the MME equipment that Figure 11 provides for the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of method and apparatus of indicating paging, paging, in the situation that the S1-U interface Connection Release, when SGW need to send data to UE, reduces between the net of call signaling and consumes, and information between Synchronization Network, promote network efficiency.Below in conjunction with accompanying drawing, be elaborated.
As shown in Figure 2, a kind of method of paging of indicating that the embodiment of the present invention provides comprises:
S21, gateway SGW receive for sending to the packet of a user equipment (UE).
This packet connects gateway (Packet Data Network Gateway, PGW) by grouped data and is transmitted to SGW, and SGW determines that the S1-U interface of the UE corresponding with this packet discharges, and can not directly to UE, send packet, carries out S22.
S22, the described packet of described SGW buffer memory, and send the downlink data Indication message to the Mobility Management Entity MME that serves this UE, be used to indicate described this UE of MME paging; Wherein, the time of the described packet of described SGW buffer memory is greater than or equal to the paging time of described this UE of MME paging.
SGW sends downlink data indication (Downlink Data Notification) to MME, and MME, after receiving this indication, replys downlink data indication response message (Downlink Data Notification Ack) to SGW.
UE can initiate service request procedure (Service Request Procedure) to core net after the paging success, and SGW can receive the service request of UE in service request procedure, and sends corresponding packet to UE after service request procedure completes.
In the present embodiment, the time of the data cached bag of SGW definite comprises following two kinds of modes:
First kind of way is time and the described paging time of the data cached bag of pre-configured SGW; When the configuration network parameter, for time of the data cached bag of described SGW and described paging time, the two sets up logical relation, makes the time of the data cached bag of described SGW be greater than or equal to the described paging time; Described logical relation comprises following content: the time T imer1 of the data cached bag of SGW, and the paging maximum time Timer2 of MME, optimal cases, need not the consideration program operation and environment cause factor the time, Timer1 equals Timer2; Consider real existing network environment, Timer1 can bigger a little and Timer2; In the situation that SGW network element self buffer memory allows, configurable Timer1 is greater than Timer2.
The second way is to be determined by SGW uninterrupted according to packet after described reception is for the packet that sends to a user equipment (UE) time of the data cached bag of described SGW, in described downlink data Indication message, comprise the maximum paging time of determining according to the time of the data cached bag of described SGW, indicate described MME to determine the paging time of this UE of paging according to the described maximum paging time; Concrete, the downlink data indication that SGW sends to MME consists of a plurality of information elements (Information Elements, IE), and a newly-increased IE is to carry the described maximum paging time.
As shown in Figure 3, a kind of paging method that the embodiment of the present invention provides comprises:
S31, Mobility Management Entity MME receive the downlink data Indication message that is used to indicate described MME calling user device UE that gateway SGW sends.
Described MME, after receiving the downlink data indication, replys downlink data indication response message to SGW.
S32, described MME are identified for the paging time of this UE of paging, and according to this paging time, according to described downlink data Indication message, the described UE of paging; Wherein, the described paging time is less than or equal to the time of the packet that the described downlink data Indication message of SGW buffer memory is corresponding.
MME paging UE, specifically send message to the evolved base station of serving this UE (evolved NodeB, eNB), this UE of indication eNB paging.When paging time arrival UE does not initiate service request procedure yet, or, when described MME has received the service request of UE within the paging time, MME stops paging.
In the present embodiment, MME determines that the paging time is by following two kinds of modes:
First kind of way is the time of pre-configured paging time and the data cached bag of SGW; When the configuration network parameter, for time of the data cached bag of SGW and described paging time, the two sets up logical relation, makes the described paging time be less than or equal to the time of the data cached bag of described SGW; Described logical relation comprises following content:
The time T imer1 of the data cached bag of SGW, and the paging maximum time Timer2 of MME, optimal cases, need not the consideration program operation and environment cause factor the time, Timer1 equals Timer2; Consider real existing network environment, Timer1 can bigger a little and Timer2; In the situation that SGW network element self buffer memory allows, configurable Timer1 is greater than Timer2.
The second way is in described downlink data Indication message, comprises the maximum paging time; Wherein, the described maximum paging time equals the time of the described packet of described SGW buffer memory; Described MME is identified for the paging time of this UE of paging, comprising: described MME, according to the described maximum paging time of carrying in described downlink data Indication message, determines the paging time of the described UE of paging.The downlink data indication that MME receives consists of a plurality of IE, and in indicating by downlink data, the information of entrained maximum paging time of newly-increased IE, determine a paging time that is less than the maximum paging time.
Below adopt concrete application scenarios to make further description to above-described embodiment.
The time of concrete scene one, pre-configured paging time and the data cached bag of SGW, and after paging, UE has initiated service request procedure; The paging time, the time of the data cached bag of SGW was by the data buffer storage Timer Controlling by the paging Timer Controlling.As shown in Figure 4, flow process is as follows:
S41, SGW receive that grouped data connects the packet that gateway (Packet Data Network Gateway, PGW) issues.
S42, SGW are data cached, and send downlink data indication (Downlink Data Notification) message to MME.SGW log-on data buffer memory timer Timer1.
S43, MME reply the downlink data indication to SGW and reply (Downlink Data Notification Ack) message.
S44, MME send paging (Paging) message to eNB.And the paging timer Timer2 of startup corresponding UE.Wherein, having set in advance Timer2 and Timer1 time span equates.
S45, eNB send paging (Paging) message, and UE is carried out to paging.
After S46, UE receive paging (Paging) message, before the data buffer storage timer of the paging timer of MME and SGW overflows, UE initiatively triggers service request procedure (Service Request Procedure).MME stops the paging timer, and SGW stops the data buffer storage timer.SGW starts to UE transmitting downlink data after service request procedure completes.
The time of concrete scene two, pre-configured paging time and the data cached bag of SGW, the paging time, the time of the data cached bag of SGW, timer was all overtime by the data buffer storage Timer Controlling by the paging Timer Controlling.As shown in Figure 5, flow process is as follows:
S51, SGW receive the packet that PGW issues.
S52, SGW are data cached, and send downlink data indication (Downlink Data Notification) message to MME.SGW log-on data buffer memory timer Timer1.
S53, MME reply the downlink data indication to SGW and reply (Downlink Data Notification Ack) message.
S54, MME send paging (Paging) message to eNB.And the paging timer of startup corresponding UE.Wherein, having set in advance Timer2 and Timer1 time span equates.
S55, eNB send paging (Paging) message, and UE is carried out to paging.
Before the data buffer storage timer of the paging timer of MME and SGW overflows, UE does not initiatively trigger service request, paging failure.MME stops the paging to this UE, and SGW abandons this bag data simultaneously, empties data cached.
Concrete scene three, as shown in Figure 6, SGW increases the IE of maximum paging time (Max Paging Time) in the downlink data indication sent to MME, and MME sends the downlink data indication to SGW and replys (Downlink Data Notification Acknowledge) message; Wherein, the duration of maximum paging time, equal time of the data cached bag of SGW.
The type of the IE of maximum paging time is evolved packet system timer (Evolved Packet System Timer, EPC Timer), and EPC Timer is defined in the 8.87th chapters and sections of 3GPP TS29.274v12.1.0, is described below:
The purpose of The purpose of the EPC Timer information element is to specify EPC specific timer values.(EPC timer information element definition is in order to list the occurrence of timer clear and definite in EPC)
The coded system of The EPC Timer information element is coded as shown in figure8.87-1and table8.87.1(EPC timer information element is deferred to Fig. 8 .87-1 and table 8.87-1)
Figure8.87-1:EPC Timer(EPC timer)
Table8.87.1:EPC Timer information element(EPC timer information element)
The IE of the downlink data indication after interpolation EPC Timer is listed as follows:
The concrete processing of SGW and PGW is as follows:
SGW is when receiving downlink data packet, determine and can not directly by S1-U interface, be handed down to this packet of UE, SGW carries out buffer memory to downlink data packet, and the time of buffer memory and the size of data cached bag determine by SGW, and concrete SGW can decide according to factors such as data traffics.After SGW determines cache-time, it is indicated to the IE notice MME of the maximum paging time (Max Paging Time) in (Downlink Data Notification) message by downlink data.The value of maximum paging time (Max Paging Time), equal time of the data cached bag of SGW.
After MME receives this message, starting duration is not more than the timer of the maximum paging time (Max Paging Time) of indicating in downlink data indication (Downlink Data Notification) message, and before timer overflows, UE is carried out to paging, if UE initiates service request flow process (Service Request Procedure) to network side before overflowing, MME stops this timer.Otherwise, after timer overflows, MME stops the paging to UE.
At SGW, to MME, send after time interval after downlink data indication (Downlink Data Notification) message equals the maximum paging time (Max Paging Time), if SGW receives new downlink data, again to MME, send downlink data indication (the Downlink Data Notification) message of carrying the maximum paging time (Max Paging Time).
As shown in Figure 7, a kind of gateway SGW equipment that the embodiment of the present invention provides comprises:
Wherein, the time of the described packet of described SGW buffer memory is greater than or equal to the paging time of described this UE of MME paging.
Preferably, as shown in Figure 8, this equipment also comprises: data transmission unit 73 when receiving the service request that this UE sends according to described paging in the time when at the described packet of buffer memory, sends described packet to this UE.
Preferably, the time of the data cached bag of described SGW and paging time are pre-configured; Perhaps, in described downlink data Indication message, comprise the maximum paging time, in order to indicate described MME, determine the paging time of this UE of paging according to the described maximum paging time; Wherein, the described maximum paging time equals the time of the described packet of described SGW buffer memory.
Preferably, as shown in Figure 9, described SGW equipment also comprises: cache-time determining unit 74, and for determine the time of the described packet of buffer memory according to data traffic.
As shown in figure 10, preferably, this equipment also comprises:
As shown in figure 11, a kind of Mobility Management Entity MME equipment that the embodiment of the present invention provides comprises:
Paging indication receiving element 1101, the downlink data Indication message that is used to indicate this MME calling user device UE sent for receiving gateway SGW;
Wherein, the described paging time is less than or equal to the time of the packet that the described downlink data Indication message of SGW buffer memory is corresponding.
Preferably, the time of described paging time and the data cached bag of SGW is pre-configured;
Perhaps, in described downlink data Indication message, comprise the maximum paging time;
Described paging unit 1102 is for the paging that is identified for this UE of paging during the time, specifically for:
According to the described maximum paging time of carrying in described downlink data Indication message, be identified for the paging time of this UE of paging.
Wherein, timeout treatment unit, cache-time determining unit can be the equipment such as processor, data receiver unit, indication paging unit, data transmission unit, paging indication receiving element, paging unit, timeout treatment unit can be realized by the transport module with information receiving and transmitting function, devices such as antennal interface, physical link interface.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect fully.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) of computer usable program code one or more.
The present invention describes with reference to flow chart and/or the block diagram of method, equipment (system) and computer program according to the embodiment of the present invention.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction be stored in this computer-readable memory produce the manufacture that comprises command device, this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make and carry out the sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out on computer or other programmable devices is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (14)
1. a method of indicating paging, is characterized in that, the method comprises:
Gateway SGW receives for sending to the packet of a user equipment (UE);
The described packet of described SGW buffer memory, and send the downlink data Indication message to the Mobility Management Entity MME that serves this UE, be used to indicate described this UE of MME paging;
Wherein, the time of the described packet of described SGW buffer memory is greater than or equal to the paging time of described this UE of MME paging.
2. the method for claim 1, is characterized in that, the method also comprises:
While receiving the service request that this UE sends according to described paging within the time of the described packet of buffer memory as SGW, to this UE, send described packet.
3. the method for claim 1, is characterized in that, in described downlink data Indication message, comprises the maximum paging time, in order to indicate described MME, determines the paging time of this UE of paging according to the described maximum paging time;
Wherein, the described maximum paging time equals the time of the described packet of described SGW buffer memory.
4. method as claimed in claim 3, is characterized in that, described SGW determines the time of the described packet of buffer memory according to data traffic.
5. the method for claim 1, is characterized in that, the method also comprises:
If described SGW, within the time of the described packet of buffer memory, does not receive the service request from this UE, empty the described packet of buffer memory.
6. a paging method, is characterized in that, the method comprises:
Mobility Management Entity MME receives the downlink data Indication message that is used to indicate described MME calling user device UE that gateway SGW sends;
Described MME is identified for the paging time of this UE of paging, and according to this paging time, according to described downlink data Indication message, the described UE of paging;
Wherein, the described paging time is less than or equal to the time of the packet that the described downlink data Indication message of SGW buffer memory is corresponding.
7. method as claimed in claim 6, is characterized in that, in described downlink data Indication message, comprises the maximum paging time; Wherein, the described maximum paging time equals the time of the described packet of described SGW buffer memory;
Described MME is identified for the paging time of this UE of paging, comprising:
Described MME, according to the described maximum paging time of carrying in described downlink data Indication message, determines the paging time of the described UE of paging.
8. a gateway SGW equipment, is characterized in that, this equipment comprises:
The data receiver unit, for receiving for sending to the packet of a user equipment (UE);
The indication paging unit, for the described packet of buffer memory, and send the downlink data Indication message to the Mobility Management Entity MME that serves this UE, is used to indicate described this UE of MME paging;
Wherein, the time of the described packet of described SGW buffer memory is greater than or equal to the paging time of described this UE of MME paging.
9. equipment as claimed in claim 8, is characterized in that, this equipment also comprises:
Data transmission unit, when receiving the service request that this UE sends according to described paging in the time when at the described packet of buffer memory, send described packet to this UE.
10. equipment as claimed in claim 8, is characterized in that, in described downlink data Indication message, comprises the maximum paging time, in order to indicate described MME, determines the paging time of this UE of paging according to the described maximum paging time;
Wherein, the described maximum paging time equals the time of the described packet of described SGW buffer memory.
11. equipment as claimed in claim 10, is characterized in that, this equipment also comprises:
The cache-time determining unit, for determining the time of the described packet of buffer memory according to data traffic.
12. equipment as claimed in claim 8, is characterized in that, this equipment also comprises:
The timeout treatment unit, if, in the time at the described packet of buffer memory, do not receive the service request from this UE, empty the described packet of buffer memory.
13. a Mobility Management Entity MME equipment, is characterized in that, this equipment comprises:
Paging indication receiving element, the downlink data Indication message that is used to indicate described MME calling user device UE sent for receiving gateway SGW;
Paging unit, for being identified for the paging time of this UE of paging, and according to this paging time, according to described downlink data Indication message, the described UE of paging;
Wherein, the described paging time is less than or equal to the time of the packet that the described downlink data Indication message of SGW buffer memory is corresponding.
14. equipment as claimed in claim 13, is characterized in that, in described downlink data Indication message, comprises the maximum paging time; Wherein, the described maximum paging time equals the time of the described packet of described SGW buffer memory;
Described paging unit is for the paging that is identified for this UE of paging during the time, specifically for:
According to the described maximum paging time of carrying in described downlink data Indication message, determine the paging time of the described UE of paging.
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