A kind of information forward shifting method and base station
Technical field
The present invention relates to field of communication technology, more particularly to a kind of information forward shifting method and base station.
Background technology
With smart mobile phone and other communication equipment numbers in long term evolution (Long Term Evolution, LTE) system
The extensive growth of amount, caused big load signaling overheads have become limitation LTE network power system capacity and user data
An important factor for experience further develops.Wherein a large amount of and frequent wireless heterogeneous networks (Radio Resource
Control, RRC) connection is established and paging message transmission is the first cause for causing larger control signaling load.So in LTE
Release14 conceptual phases introduce light connection (Light Connection) technology, the RRC to optimize LTE system connects
Foundation and management process, mobility management process and paging are connect, to realize the purpose for mitigating system control signaling load.
It is that (User Equipment, UE can also be referred to as eventually user equipment in Light Connection technologies
End) one is introduced in " centre " state between RRC connection status and RRC idle states, referred to as Light
Connection states.The transformational relation of RRC connection status, RRC Light Connection states and RRC idle states is such as
Shown in Fig. 1.When the UE in RRC connection status is after completing data transmission, network side can indicate it by dedicated signaling
Into RRC Light Connection states.For Light Connection states, the context of UE will be saved in UE
Side and network side.After, it, can be by previously stored UE contexts with smaller when UE needs to carry out business datum transmission
Signalling exchange be restored to RRC connection status, avoid due in traditional LTE system UE when carrying out data transmission, need frequency
Numerous initiation Initial R RC connections, and the serious control signaling load caused.
Following optimization aim will be realized in LTE system by Light Connection technologies:
RRC anchor points (anchor) or other network controls entities:For realizing network side to being in Light
The UE contexts of Connection states UE are preserved;
The lower control signaling expense for mobile management;
The lower control signaling expense for paging;
Faster RRC connections foundation/resume speed, will meet the needs of following lower data transmission delay;
Light Connection states can realize " permanent online " business in future.
Clearly indicate that Light Connection states reply core net is transparent in current standardized conclusion, that is just meaned
It after UE enters Light Connection states, S1 connections normally retain, and UE is in this state:
Downlink data directly can be dealt into current serving BS by S1-U from gateway (serving-GW)
Data buffer storage is paged UE by (serving eNB, that is, anchor point eNB), anchor point eNB within the scope of mobile management,
Downlink data is sent to UE after paging successfully.
Downlink signaling message, such as short message service (SMS) message, can be by S1-C connections directly from mobile management function
(MME) anchor point eNB is issued, anchor point eNB caches signaling data, and pages UE within the scope of mobile management, pages successfully
Downlink signaling is issued into UE afterwards.
Because not yet being determined about the range of RAN sidesway mobility managements (i.e. the sides RAN paging range) at present, it may be possible to come from
A series of cells of one or more eNB, in some instances it may even be possible to be a tracking area list (TA list).But either which kind of, all may be used
Can there is a possibility that UE moves out current anchor eNB ranges.Using current technology, if at current anchor point eNB at
Work(pages UE, and downlink signaling or data, which are issued UE, later is not present any problem;But if UE is moved to non-anchor eNB
Under, after successful page UE, existing technology can not be by downlink signaling or data forwarding to the base station of successful page UE and forwarding
To UE.
Invention content
The technical problem to be solved in the present invention is to provide a kind of information forward shifting method and base station, to solve existing to work as UE
It is moved under non-anchor eNB, it, can not be by the base of downlink signaling or data forwarding to successful page UE after successful page UE
It stands and is transmitted to UE, the problem of to influence network communication.
In order to solve the above-mentioned technical problem, the embodiment of the present invention provides a kind of information forward shifting method, including:
After the service range that the terminal in light connection status removes anchor base station, obtains and cache from the anchor base station
Downlink information, the downlink information of the caching includes:The Non-Access Stratum protocols data cell NAS-PDU letters of anchor base station caching
The downlink data of breath and/or caching;
The downlink information is sent to the terminal.
Further, described to be obtained from the anchor base station when the downlink information includes at least one NAS-PDU information
The step of downlink information for taking caching includes:
After the completion of paging, recycling terminal contexts solicited message RETRIEVE UE are sent to the anchor base station
CONTEXT REQUEST;
The anchor base station is received according to the recycling terminal contexts solicited message, the response message of feedback, the sound
It answers and carries at least one NAS-PDU information in message.
Further, described to be obtained from the anchor base station when the downlink information includes at least one NAS-PDU information
The step of downlink information for taking caching includes:
In X2 pagings, the X2 paging requests that the anchor base station is sent are received, are carried in the X2 paging requests
There is at least one NAS-PDU information.
Further, described to be obtained under caching from the anchor base station when the downlink information includes downlink data
The step of row information includes:
After the completion of recycling terminal contexts process, the terminal for carrying the destination address that downlink data is sent or more is sent
Literary release message gives the anchor base station;
The anchor base station is received in the downlink data for having caching, the downlink data fed back according to the destination address.
Further, the tunnel that the destination address is downlink general packet radio service tunnel agreement DL GTP is whole
Node.
The embodiment of the present invention provides a kind of resident base station, including:
Acquisition module is used for after the service range that the terminal in light connection status removes anchor base station, from the anchor
Point base stations obtain the downlink information of caching, and the downlink information of the caching includes:The Non-Access Stratum protocols number of anchor base station caching
According to unit NAS-PDU information and/or the downlink data of caching;
First sending module, for the downlink information to be sent to the terminal.
Further, when the downlink information includes at least one NAS-PDU information, the acquisition module includes:
First transmission unit, for after the completion of paging, sending recycling terminal contexts to the anchor base station and asking
Seek information RETRIEVE UE CONTEXT REQUEST;
First receiving unit, for receiving the anchor base station according to the recycling terminal contexts solicited message, feedback
Response message, carry at least one NAS-PDU information in the response message.
Further, when the downlink information includes at least one NAS-PDU information, the acquisition module includes:
Second receiving unit, the X2 paging requests sent in X2 pagings, receiving the anchor base station are described
At least one NAS-PDU information is carried in X2 paging requests.
Further, when the downlink information includes downlink data, the acquisition module includes:
Second transmission unit carries downlink data transmission for after the completion of recycling terminal contexts process, sending
The terminal contexts release message of destination address gives the anchor base station;
Third receiving unit, for receiving the anchor base station in the downlink data for having caching, according to the destination
The downlink data of location feedback.
Further, the tunnel that the destination address is downlink general packet radio service tunnel agreement DL GTP is whole
Node.
The embodiment of the present invention provides a kind of information forward shifting method, including:
The paging triggering information that core-network side issues is received, the paging triggering information includes:Including Non-Access Stratum protocols
The downlink signaling and/or downlink data of data cell NAS-PDU information;
After the service range that the terminal in light connection status removes anchor base station, information is triggered according to the paging,
The downlink information of caching is sent to resident base station;Wherein, the downlink information of the caching includes:The NAS- of anchor base station caching
The downlink data of PDU information and/or caching.
Further, when the downlink information includes at least one NAS-PDU information, the downlink letter for sending caching
It ceases and includes to the step of resident base station:
After the completion of paging, receives and be resident the recycling terminal contexts solicited message RETRIEVE UE that base station is sent
CONTEXT REQUEST;
According to the recycling terminal contexts solicited message, at least one NAS- is carried to the resident base station feedback
The response message of PDU information.
Further, when the downlink information includes at least one NAS-PDU information, the downlink letter for sending caching
It ceases and includes to the step of resident base station:
In X2 pagings, the X2 pagings for carrying at least one NAS-PDU information to the resident base station transmission are asked
It asks.
Further, when the downlink information includes downlink data, the downlink information for sending caching is to resident base
The step of standing include:
After the completion of recycling terminal contexts process, receive the resident base station transmission carries what downlink data was sent
The terminal contexts release message of destination address;
Judge whether the downlink data of caching;
If there is the downlink data of caching, according to the destination address, the downlink data is fed back to described resident
Base station.
Further, the tunnel that the destination address is downlink general packet radio service tunnel agreement DL GTP is whole
Node.
The embodiment of the present invention provides a kind of anchor base station, including:
Receiving module triggers information for receiving the paging that core-network side issues, and the paging triggering information includes:Including
The downlink signaling and/or downlink data of Non-Access Stratum protocols data cell NAS-PDU information;
Second sending module is used for after the service range that the terminal in light connection status removes anchor base station, according to
The paging triggers information, sends the downlink information of caching to resident base station;Wherein, the downlink information of the caching includes:Anchor
The NAS-PDU information of point base stations caching and/or the downlink data of caching.
Further, when the downlink information includes at least one NAS-PDU information, the second sending module packet
It includes:
4th receiving unit is asked for after the completion of paging, receiving the recycling terminal contexts that resident base station is sent
Seek information RETRIEVE UE CONTEXT REQUEST;
First feedback unit, for according to the recycling terminal contexts solicited message, being taken to the resident base station feedback
Response message at least one NAS-PDU information.
Further, when the downlink information includes at least one NAS-PDU information, the second sending module packet
It includes:
Third transmission unit, in X2 pagings, being sent to the resident base station and carrying at least one NAS-
The X2 paging requests of PDU information.
Further, when the downlink information includes downlink data, second sending module includes:
5th receiving unit, for after the completion of recycling terminal contexts process, receiving taking for the resident base station transmission
Terminal contexts release message with the destination address that downlink data is sent;
Judging unit, the downlink data for judging whether caching;
Second feedback unit, if the downlink data for there is caching, according to the destination address, by the lower line number
According to feeding back to the resident base station.
Further, the tunnel that the destination address is downlink general packet radio service tunnel agreement DL GTP is whole
Node.
The beneficial effects of the invention are as follows:
Said program, by the way that after the service range that the terminal in light connection status removes anchor base station, terminal is current
Resident base station the downlink signaling or the downlink informations such as downlink data of caching are obtained from anchor base station, and the downlink information is sent
To terminal, such mode realizes information from anchor base station to the forward of resident base station so that terminal will not in moving process
There is information to lose, and then ensure that the integrality of network communication.
Description of the drawings
Fig. 1 shows the transformational relations of RRC connection status, RRC Light Connection states and RRC idle states to show
It is intended to;
Fig. 2 indicates the flow diagram of the information forward shifting method of the embodiment of the present invention one;
Fig. 3 indicates the concrete application flow diagram of the realization method one of the step 21 of the embodiment of the present invention one;
Fig. 4 indicates the concrete application flow diagram of the realization method two of the step 21 of the embodiment of the present invention one;
Fig. 5 indicates the concrete application flow diagram of the realization method three of the step 21 of the embodiment of the present invention one;
Fig. 6 indicates the module diagram of the resident base station of the embodiment of the present invention two;
Fig. 7 indicates the structural schematic diagram of the resident base station of the embodiment of the present invention three;
Fig. 8 shows the flow diagrams of the information forward shifting method of the embodiment of the present invention four;
Fig. 9 indicates the module diagram of the anchor base station of the embodiment of the present invention five;
Figure 10 indicates the structural schematic diagram of the anchor base station of the embodiment of the present invention six.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, right below in conjunction with the accompanying drawings and the specific embodiments
The present invention is described in detail.
The present invention when UE is moved under non-anchor eNB, after successful page UE, can not believe downlink for existing
It enables or data forwarding to the base station of successful page UE and is transmitted to UE, the problem of to influence network communication, provide a kind of information
Forward shifting method and base station.
Embodiment one
As shown in Fig. 2, the embodiment of the present invention provides a kind of information forward shifting method, including:
Step 21, after the service range that the terminal in light connection status removes anchor base station, from the anchor base station
Obtain the downlink information of caching;
It should be noted that the downlink information of the caching includes:The Non-Access Stratum protocols data sheet of anchor base station caching
The downlink data of first (NAS-PDU) information and/or caching;
Step 22, the downlink information is sent to the terminal.
It should be noted that the information forward shifting method is applied to resident base station side, (i.e. terminal is removing anchor base station (original clothes
Be engaged in base station) after, be moved to it is new be terminal service base station, that is, the current resident base station or non-anchor base station of terminal),
And the application range of the embodiment is the terminal in light connection status;Because of the mobility of terminal, when terminal is constantly in anchor point
It, can direct paging when anchor base station receives the downlink signaling or downlink data of core-network side when under the service range of base station
Terminal finds and downlink signaling or downlink data is sent to terminal after terminal, but when terminal is out of the service model of anchor base station
Enclose, since non-anchor base station will not directly receive the downlink signaling or downlink data that core net issues, so cannot achieve by
Downlink signaling or downlink data are sent to terminal, and what the present embodiment was realized is by the downlink signaling of anchor base station side or lower line number
According to non-anchor base station is forwarded to, smoothly to realize the purpose that the downlink signaling of core-network side or downlink data are sent to terminal.
It should be noted that downlink signaling described in the present embodiment refers to including the downlink signaling of NAS-PDU information.In order to realize
The forward of information present embodiments provides following three kinds of optional modes.
Mode one,
When the downlink information includes at least one NAS-PDU information, the realization process of the step 21 includes:
Step 211, after the completion of paging, recycling terminal contexts solicited message is sent to the anchor base station
(RETRIEVE UE CONTEXT REQUEST);
Step 212, the anchor base station is received according to the recycling terminal contexts solicited message, and the response of feedback disappears
It ceases, at least one NAS-PDU information is carried in the response message.
It should be noted that the response message is to recycle terminal contexts response message (RETRIEVE UE CONTEXT
RESPONSE) in this way, need to only increase information element (IE) item in recycling terminal contexts response message and be used for taking
Band NAS-PDU information, such as the IE can be named as NAS-PDU lists (NAS-PDU List), it should be noted that when
It, only need to be in the information word of the recycling above-mentioned new definition of terminal contexts response message when NAS-PDU information that there are one anchor base stations
This NAS-PDU information is carried in element;When anchor base station there are multiple NAS-PDU information, need to exist multiple NAS-PDU information
It is sent to resident base station together in the information element of above-mentioned new definition.
As shown in figure 3, the specific implementation flow of which one in practical applications is:
Step 1.1, core net is issued to the anchor base station for the terminal for entering light connected states comprising NAS-
The downlink signaling of PDU;
Step 1.2, anchor base station directly initiates paging (paging) to terminal;
Step 1.3, anchor base station sends X2 paging requests to resident base station;
It should be noted that anchor base station, when executing step 1.2 and step 1.3, there is no specific sequencings to close
System, step 1.2 and step 1.3 can be the process being carried out at the same time.
Step 1.4, it is resident base station and initiates paging (paging) to terminal;
Step 1.5, the paging that terminal is initiated according to resident base station, random access are resident base station;
Step 1.6, it is resident base station and initiates recycling terminal contexts solicited message to anchor base station;
It should be noted that resident base station is to send recycling terminal contexts request to anchor base station by X2 interface.
Step 1.7, the information that anchor base station is provided according to resident base station, after being successfully found the contextual information of terminal,
Recycling terminal contexts response message is sent to resident base station, and carries caching in the recycling terminal contexts response message
NAS-PDU information;
Step 1.8, base station is resident after receiving recycling terminal contexts response message, which is answered
The NAS-PDU information answered in message is sent to terminal by idle message.
It should be noted that mode one is realized by increasing NAS-PDU information in recycling terminal contexts response message
NAS-PDU information does not introduce new signaling by anchor base station to the forward of resident base station, such mode, will not cause additional
Signaling overheads.
Mode two,
When the downlink information includes at least one NAS-PDU information, the realization process of the step 21 is:
In X2 pagings, the X2 paging requests that the anchor base station is sent are received, are carried in the X2 paging requests
There is at least one NAS-PDU information.
It should be noted that such mode is when anchor base station is initiated to page, directly the NAS-PDU information of caching is led to
It crosses X2 paging requests and passes to resident base station in this way, only need to increase information element (IE) item in X2 paging requests
For carrying NAS-PDU information, such as the IE can be named as NAS-PDU lists (NAS-PDU List), need to illustrate
, when anchor base station only there are one NAS-PDU information when, only need to be taken in the information element of the above-mentioned new definition of X2 paging requests
With this NAS-PDU information;When anchor base station is cached with multiple NAS-PDU information, need multiple NAS-PDU information upper
It states in the information element newly defined and resident base station is sent to by X2 paging requests together.
As shown in figure 4, the specific implementation flow of which one in practical applications is:
Step 2.1, core net is issued to the anchor base station for the terminal for entering light connected states comprising NAS-
The downlink signaling of PDU;
Step 2.2, anchor base station initiates paging (paging) to terminal;
Step 2.3, anchor base station sends X2 paging requests to resident base station, and caching is carried in the X2 paging requests
NAS-PDU information;
It should be noted that anchor base station, when executing step 2.2 and step 2.3, there is no specific sequencings to close
System, step 2.2 and step 2.3 can be the process being carried out at the same time.
Step 2.4, it is resident base station and initiates paging (paging) to terminal;
Step 2.5, terminal is resident base station according to the paging for being resident base station, random access;
Step 2.6, it is resident base station and initiates recycling terminal contexts solicited message to anchor base station;
It should be noted that resident base station is to send recycling terminal contexts request to anchor base station by X2 interface.
Step 2.7, the information that anchor base station is provided according to resident base station, after being successfully found the contextual information of terminal,
Recycling terminal contexts response message is sent to resident base station;
Step 2.8, base station is resident after receiving recycling terminal contexts response message, is shown to page successfully, be stayed at this time
Stay base station that the NAS-PDU information received in X2 pagings is sent to terminal by idle message.
It should be noted that mode two and mode one except that not to recycling terminal contexts in mode two
Process is improved, and simply by NAS-PDU information is increased in X2 paging requests, realizes NAS-PDU information by anchor point base
It stands to the forward of resident base station, such mode will not cause additional signaling overheads also without new signaling is introduced.
Mode three,
When the downlink information includes downlink data, the realization process of the step 21 includes:
Step 213, after the completion of recycling terminal contexts process, the destination address for carrying downlink data transmission is sent
Terminal contexts release message gives the anchor base station;
It should be noted that after the contextual information before resident base station has obtained terminal, it is just aware of the number of terminal
According to the configuration information of radio bearer (DRB), base station is resident when needing to do data forwarding, in the terminal sent to anchor base station
The destination address that downlink data is sent hereafter is carried in release message, that is, carries downlink general packet radio service tunnel
The tunnel destination node (DL GTP Tunnel Endpoint) of road agreement, to the transmission address of indicating downlink data.
Step 214, the anchor base station is received in the downlink data for having caching, under being fed back according to the destination address
Row data.
It should be noted that carrying the terminal contexts of DL GTP Tunnel Endpoint when anchor base station receives and releasing
When putting message, if itself there is the downlink data of caching to send out, by these DL GTP Tunnel Endpoint by downlink
Data are sent to resident base station, if the downlink data not cached will be sent out, ignore these DL GTP Tunnel
Endpoint。
As shown in figure 5, the specific implementation flow of which three in practical applications is:
Step 3.1, core net issues downlink data to the anchor base station for the terminal for entering light connected states;
Step 3.2, anchor base station initiates paging (paging) to terminal;
Step 3.3, anchor base station sends X2 paging requests to resident base station;
It should be noted that anchor base station, when executing step 3.2 and step 3.3, there is no specific sequencings to close
System, step 3.2 and step 3.3 can be the process being carried out at the same time.
Step 3.4, it is resident base station and initiates paging (paging) to terminal;
Step 3.5, terminal is resident base station according to the paging for being resident base station, random access;
Step 3.6, it is resident base station and initiates recycling terminal contexts solicited message to anchor base station;
It should be noted that resident base station is to send recycling terminal contexts request to anchor base station by X2 interface.
Step 3.7, the information that anchor base station is provided according to resident base station, after being successfully found the contextual information of terminal,
Recycling terminal contexts response message is sent to resident base station;
Step 3.8, if resident base station needs to carry out the forward of data, the DL GTP for carrying each carrying are sent
The terminal contexts release message of Tunnel Endpoint is to anchor base station, it should be noted that the DL GTP Tunnel
The purpose of Endpoint is the data forwarding for carrying out user plane;
Step 3.9, if anchor base station has the downlink data of caching to send out, by these GTP Tunnel by lower line number
According to being sent to resident base station;Otherwise ignore the GTP Tunnel information;
Step 3.10, base station is resident in the downlink data for receiving forward, which is sent out by radio bearer
Give terminal.
It should be noted that the information forward shifting method of the present embodiment will not cause additional letter without introducing new signaling
Expense is enabled, need to only increase by one IE in existing signaling for carrying out the transmission of relevant information, such mode is simple and effective, can be with
The data forwarding for supporting control plane and user plane well, avoids terminal and occurs loss of data in moving process, influence to use
The case where family is experienced in this way, ensure that the integrality of network communication.
Embodiment two
As shown in fig. 6, the embodiment of the present invention provides a kind of resident base station 60, including:
Acquisition module 61, for after the service range that the terminal in light connection status removes anchor base station, from described
Anchor base station obtains the downlink information of caching, and the downlink information of the caching includes:The Non-Access Stratum protocols of anchor base station caching
The downlink data of data cell NAS-PDU information and/or caching;
First sending module 62, for the downlink information to be sent to the terminal.
Optionally, when the downlink information includes at least one NAS-PDU information, the acquisition module 61 includes:
First transmission unit, for after the completion of paging, sending recycling terminal contexts to the anchor base station and asking
Seek information;
First receiving unit, for receiving the anchor base station according to the recycling terminal contexts solicited message, feedback
Response message, carry at least one NAS-PDU information in the response message.
Optionally, when the downlink information includes at least one NAS-PDU information, the acquisition module 61 includes:
Second receiving unit, the X2 paging requests sent in X2 pagings, receiving the anchor base station are described
At least one NAS-PDU information is carried in X2 paging requests.
Optionally, when the downlink information includes downlink data, the acquisition module 61 includes:
Second transmission unit carries downlink data transmission for after the completion of recycling terminal contexts process, sending
The terminal contexts release message of destination address gives the anchor base station;
Third receiving unit, for receiving the anchor base station in the downlink data for having caching, according to the destination
The downlink data of location feedback.
Specifically, the tunnel that the destination address is downlink general packet radio service tunnel agreement DL GTP terminates
Point.
It should be noted that the embodiment of the resident base station is to be resident base correspondingly with above-mentioned embodiment of the method
It stands, all realization methods can also reach identical skill suitable for the embodiment of the resident base station in above method embodiment
Art effect.
Embodiment three
As shown in fig. 7, the embodiment of the present invention provides a kind of resident base station, including:
Processor 71;And the memory 73 being connected with the processor 71 by bus interface 72, the memory
73 for storing the processor 71 used program and data when executing operation, when processor 71 calls and executes described
When the program and data that are stored in memory 73, following process is executed:
After the service range that the terminal in light connection status removes anchor base station, obtains and cache from the anchor base station
Downlink information, the downlink information of the caching includes:The Non-Access Stratum protocols data cell NAS-PDU letters of anchor base station caching
The downlink data of breath and/or caching;
The downlink information is sent to the terminal by transceiver 74.
It should be noted that the processor 71 is additionally operable to realize the work(of any one other module of above-mentioned resident base station
Energy.
It should be noted that transceiver 74 is connect with bus interface 72, for sending downlink under the control of processor 71
Information.
It should be noted that in the figure 7, bus architecture may include the bus and bridge of any number of interconnection, specifically by
The various circuits for the memory that the one or more processors and memory 73 that processor 71 represents represent link together.Bus
Framework can also link together various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like,
These are all it is known in the art, and therefore, it will not be further described herein.Bus interface provides interface.Transmitting-receiving
Machine 74 can be multiple element, that is, include transmitter and transceiver, provide for logical with various other devices over a transmission medium
The unit of letter.Processor 71 is responsible for bus architecture and common processing, and memory 73 can store processor 71 and execute
Used data when operation.
It will be understood by those skilled in the art that realize above-described embodiment all or part of step can by hardware come
It completes, relevant hardware can also be indicated by computer program to complete, the computer program includes executing above-mentioned side
The instruction of some or all of step of method;And the computer program can be stored in a readable storage medium storing program for executing, storage medium
It can be any type of storage medium.
Example IV
As shown in figure 8, the embodiment of the present invention provides a kind of information forward shifting method, it is applied to anchor base station side, including:
Step 81, the paging triggering information that core-network side issues is received, the paging triggering information includes:Including non-access
The downlink signaling and/or downlink data of layer protocol data cell NAS-PDU information;
Step 88, it after the service range that the terminal in light connection status removes anchor base station, is touched according to the paging
Photos and sending messages send the downlink information of caching to resident base station;Wherein, the downlink information of the caching includes:Anchor base station caches
NAS-PDU information and/or caching downlink data.
Optionally, when the downlink information includes at least one NAS-PDU information, the step 88 includes:
After the completion of paging, receives and be resident the recycling terminal contexts solicited message that base station is sent;
According to the recycling terminal contexts solicited message, at least one NAS- is carried to the resident base station feedback
The response message of PDU information.
Optionally, when the downlink information includes at least one NAS-PDU information, the step 88 includes:
In X2 pagings, the X2 pagings for carrying at least one NAS-PDU information to the resident base station transmission are asked
It asks.
Optionally, when the downlink information includes downlink data, the step 88 includes:
After the completion of recycling terminal contexts process, receive the resident base station transmission carries what downlink data was sent
The terminal contexts release message of destination address;
Judge whether the downlink data of caching;
If there is the downlink data of caching, according to the destination address, the downlink data is fed back to described resident
Base station.
Specifically, the tunnel that the destination address is downlink general packet radio service tunnel agreement DL GTP terminates
Point.
Wherein, in above-described embodiment one, the description of all about anchor base station is suitable for the letter for applying anchor base station
In the embodiment for ceasing forward shifting method, it can also reach same technique effect.
Embodiment five
As shown in figure 9, the embodiment of the present invention provides a kind of anchor base station 90, including:
Receiving module 91 triggers information for receiving the paging that core-network side issues, and the paging triggering information includes:Packet
The downlink signaling and/or downlink data of the NAS-PDU information of data cell containing Non-Access Stratum protocols;
Second sending module 92 is used for after the service range that the terminal in light connection status removes anchor base station, root
Information is triggered according to the paging, sends the downlink information of caching to resident base station;Wherein, the downlink information of the caching includes:
The NAS-PDU information of anchor base station caching and/or the downlink data of caching.
Optionally, when the downlink information includes at least one NAS-PDU information, second sending module 92 wraps
It includes:
4th receiving unit is asked for after the completion of paging, receiving the recycling terminal contexts that resident base station is sent
Seek information;
First feedback unit, for according to the recycling terminal contexts solicited message, being taken to the resident base station feedback
Response message at least one NAS-PDU information.
Optionally, when the downlink information includes at least one NAS-PDU information, second sending module 92 wraps
It includes:
Third transmission unit, in X2 pagings, being sent to the resident base station and carrying at least one NAS-
The X2 paging requests of PDU information.
Optionally, when the downlink information includes downlink data, second sending module 92 includes:
5th receiving unit, for after the completion of recycling terminal contexts process, receiving taking for the resident base station transmission
Terminal contexts release message with the destination address that downlink data is sent;
Judging unit, the downlink data for judging whether caching;
Second feedback unit, if the downlink data for there is caching, according to the destination address, by the lower line number
According to feeding back to the resident base station.
Specifically, the tunnel that the destination address is downlink general packet radio service tunnel agreement DL GTP terminates
Point.
It should be noted that the embodiment of the anchor base station is and the one-to-one anchor point base of above-mentioned embodiment of the method
It stands, all realization methods can also reach identical skill suitable for the embodiment of the anchor base station in above method embodiment
Art effect.
Embodiment six
As shown in Figure 10, the embodiment of the present invention provides a kind of anchor base station, including:
Processor 101;And the memory 103 being connected with the processor 101 by bus interface 102, it is described to deposit
Reservoir 103 is for storing the processor 101 used program and data when executing operation, when processor 101 calls simultaneously
When executing the program and data that are stored in the memory 103, following process is executed:
The paging that core-network side issues is received by transceiver 104 and triggers information, and the paging triggering information includes:Including
The downlink signaling and/or downlink data of Non-Access Stratum protocols data cell NAS-PDU information;
After the service range that the terminal in light connection status removes anchor base station, information is triggered according to the paging,
The downlink information of caching is sent to resident base station by transceiver 104;Wherein, the downlink information of the caching includes:Anchor point base
The NAS-PDU information of caching of standing and/or the downlink data of caching.
It should be noted that the processor 101 is additionally operable to realize the work(of any one other module of above-mentioned anchor base station
Energy.
It should be noted that transceiver 104 is connect with bus interface 102, sought for being received under the control of processor 101
It exhales triggering information and sends downlink information.
It should be noted that in Fig. 10, bus architecture may include the bus and bridge of any number of interconnection, specifically by
The various circuits for the memory that the one or more processors and memory 103 that processor 101 represents represent link together.Always
Various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like can also be linked at one by line architecture
It rises, these are all it is known in the art, and therefore, it will not be further described herein.Bus interface provides interface.It receives
Hair machine 104 can be multiple element, that is, include transmitter and transceiver, provide for over a transmission medium with various other devices
The unit of communication.Processor 101 is responsible for bus architecture and common processing, and memory 103 can store processor 101 and exist
Execute used data when operation.
It will be understood by those skilled in the art that realize above-described embodiment all or part of step can by hardware come
It completes, relevant hardware can also be indicated by computer program to complete, the computer program includes executing above-mentioned side
The instruction of some or all of step of method;And the computer program can be stored in a readable storage medium storing program for executing, storage medium
It can be any type of storage medium.
Above-described is the preferred embodiment of the present invention, it should be pointed out that the ordinary person of the art is come
It says, can also make several improvements and retouch under the premise of not departing from principle of the present invention, these improvements and modifications also exist
In protection scope of the present invention.