CN1941999A - Service processing method - Google Patents
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Abstract
The method is used in the service interaction between the UE in evolution network having two layer node architecture and its external network in traveling process. It comprises: UE is connected to gate IAGW node to make service succession through ERS node in roaming area; or UE is firstly connected to anchor IAGW node and then connected to gate IAGW node to make service succession.
Description
Technical field
The present invention relates to wireless communication field, relate in particular in the evolvement network of two node layer structures, user terminal (UE) in moving process with the service implementation method of external network.
Background technology
At present at 3GPP (3rd Generation Partnership Project, 3G (Third Generation) Moblie standardization body) among the mobile network, each active research LTE of manufacturer (Long Term Evolution), the purpose of LTE provides a kind of network cheaply that can reduce time delay, raising user data rate, improve power system capacity and covering.Only use PS territory business, bearer network all is the IP carrying.LTE proposes following target:
Significantly improve peak data rate, as 100Mbps (down link) and 50Mbps (up link);
Under the prerequisite of keeping existing site deployment invariant position, increase " cell edge bit rate ";
Significantly improve spectrum efficiency (for example: the 2-4 of Rel6 doubly);
The Radio Access Network that realization is lower than 10ms postpones;
Significantly reducing chain of command postpones;
Extendible bandwidth can be distributed narrow spectral bandwidth neatly;
Support the intercommunication between existing 3G system and non-3GPP canonical system;
Further strengthen multimedia broadcast/multicast service (MBMS);
Support following enhancement mode IMS and core net, or the like.
On this basis, derived the new evolution network framework that much satisfies condition, a kind of popular network architecture is two node layer frameworks, as shown in Figure 1.
Under this framework, ERS (Edge Radio Station, wireless base station, edge) has the function of Node B (base station) and radio network controller (RNC) in the prior art; IAGW (IP Access GateWay, IP IAD) has the function of part SGSN (Serving GPRS Support Node, Serving GPRS Support Node) and the function of GGSN (Gateway GPRS Support Node, Gateway GPRS Support Node).The ERS node is connected by IP network with the IAGW node, and its interface is the E-I interface, and is similar with Iu interface function of the prior art.
In the evolvement network of this two node layer structures, and the service link between the external network as shown in Figure 2.
Among Fig. 2, the ERS node that UE connects is the ERS node of UE current coverage range, and is defined as follows the IAGW node:
Ownership IAGW (Home IAGW) node: the home network IAGW node of representing UE;
Critical point IAGW (Gateway IAGW) node: represent UE to go out/enter the mouth the IAGW node of external network (as Internet), its function class is similar to GGSN node of the prior art;
Grappling IAGW (Anchor IAGW) node: the IAGW node of representing UE to insert by the ERS node, its function class is similar to SGSN node of the prior art; Grappling IAGW node is generally the IAGW node under the UE coverage, or the acquiescence IAGW node of the ERS node under the UE coverage.
When UE need carry out business continuing with external network, UE was connected to the IAGW node of grappling by local (or roaming place) ERS node, by the critical point IAGW node relevant with business, is connected to external network (as Internet) again.
In the evolution network framework of superincumbent two node layers, only proposed this kind framework form in the prior art, promptly reached purposes such as reducing professional propagation delay time by reducing the node number.In the prior art, also the concrete function of various network nodes is not divided and described in detail.Therefore, in the prior art also not based on the concrete business continuing method of this two node layer evolvement networks.
Summary of the invention
The invention provides a kind of service implementation method based on two node layer evolvement networks, the user terminal of evolvement network that is applied to two node layer structures in moving process with the service interaction of external network, improve two node layer evolvement network functions.
The user terminal UE of evolvement network that the inventive method is applied to two node layer structures in moving process with the service interaction of external network, comprising:
The grouped data packet protocol PDP Context of UE activating service;
If UE is in the scope of being administered with the relevant critical point IAGW node of business, then carry out business continuing by affiliated ERS node and described critical point IAGW node;
If UE moves to outside the scope that described critical point IAGW node administered, then be connected to described critical point IAGW node and carry out business continuing by roaming place ERS node; Perhaps with IAGW node under the roaming place as grappling IAGW node, be connected to described grappling IAGW node by roaming place ERS node, be connected to described critical point IAGW node by described grappling IAGW node again and carry out business continuing.
According to said method of the present invention, be connected by the IP link between described ERS node and critical point IAGW node or the grappling IAGW node.
According to said method of the present invention, realize that by the IP link multi-to-multi is connected between described ERS node and critical point IAGW node or the grappling IAGW node.
According to said method of the present invention,, then change grappling IAGW node to a new IAGW node if the ERS node of the current connection of UE and the link between the grappling IAGW node can not satisfy communicating requirement.
Described replacing grappling IAGW node comprises the steps:
Old grappling IAGW node before A, the replacing sends the new grappling IAGW node that request grappling migration message changes to hope;
B, new grappling IAGW node send the ERS node of grappling migration request message to the current connection of UE, and notice ERS node will carry out the migration of grappling IAGW node;
C, described ERS node are prepared resource, and are established to user's face of the E-I interface of new grappling IAGW; After resource is ready to complete, send grappling migration request response message and notify new grappling IAGW node resource to prepare, wait execution to be migrated;
D, new grappling IAGW node return request grappling migration response message and give old grappling IAGW node, inform and prepare to receive migration;
E, old grappling IAGW node send grappling migration order to described ERS node;
F, described ERS node receive that grappling migration order back changes user's face to new grappling IAGW node, send the grappling migration simultaneously and finish message to new grappling IAGW node and old grappling IAGW node, and informing removal is finished;
After G, new grappling IAGW node receive that message is finished in migration, initiate to upgrade the PDP Context flow process, upgrade the PDP Context of critical point IAGW node to the critical point IAGW node that all relate to; After old grappling IAGW node receives that message is finished in migration, initiate the E-I interface and discharge flow process, discharge the E-I interface between itself and the ERS node.
In the time of in UE roams into the scope that a new IAGW node administered, if the link between roaming place ERS node and the old grappling IAGW node satisfies communicating requirement, then will this old IAGW node as grappling IAGW node.
Started multinomial business if UE is current, when UE when source ERS node roams into target ERS node, need to initiate migration request to each professional pairing critical point IAGW node simultaneously, set up target ERS node and be connected with business between each professional pairing critical point IAGW node.
Described UE roams into target ERS node from source ERS node and initiates migration request to each professional pairing critical point IAGW node simultaneously, comprises following concrete steps:
A, source ERS node are initiated the migration demand respectively to each professional pairing critical point IAGW node;
B, each professional pairing critical point IAGW node are initiated migration request to target ERS node respectively;
C, target ERS node are after resource is ready to complete, respectively to each professional pairing critical point IAGW node remigration request-reply;
D, each professional pairing critical point IAGW node send the migration order to source ERS node respectively, carry out lossless migration between source ERS node and the target ERS node;
E, after UE successfully is linked into target ERS node, target ERS node sends migration to each professional pairing critical point IAGW node respectively and finishes message, each professional pairing critical point IAGW node discharges the E-I interface between itself and the source ERS node respectively.
According to said method of the present invention, after UE roaming, if the PDP Context of UE deexcitation current business and activating again again, then with IAGW node under the current roaming ground as critical point IAGW node.
According to said method of the present invention,, then be connected to described critical point IAGW node and carry out business continuing by the ERS node of roaming place once more if UE continues to roam into outside the compass of competency of described critical point IAGW node.
According to said method of the present invention, if UE continues to roam into outside the compass of competency of described critical point IAGW node, the IAGW node is as grappling IAGW node under then inciting somebody to action once more the roaming place, be connected to this grappling IAGW node by roaming place ERS node once more, be connected to described critical point IAGW node by this grappling IAGW node again and carry out business continuing.
If UE is the fixed address contracted user, when current business is the fixed address business, then it is belonged to the IAGW node as described critical point IAGW node.
According to said method of the present invention, if the IAGW node of UE ownership receives the business that sends to the UE fixed address, and UE is current when not activating the PDP Context of fixed address, and then the IAGW node by the current connection of UE sends the request that activates fixed address to UE;
The PDP Context that UE activates fixed address carries out business continuing.
According to said method of the present invention, when UE uses the on-fixed address professional in the roaming place, be linked into ownership IAGW node by roaming place ERS node and carry out business continuing; Perhaps with IAGW node under the roaming place as grappling IAGW node, be connected to described grappling IAGW node by roaming place ERS node, be connected to ownership IAGW node by described grappling IAGW node again and carry out business continuing; Perhaps by with IAGW node under the roaming place as critical point IAGW node, be linked into this critical point IAGW node by roaming place ERS node and carry out business continuing.
According to said method of the present invention, activating under the PDP Context state, be connected to the mode that critical point IAGW node carries out business continuing if adopt by the ERS node, then PDP information and the mobility management information of record UE in the IAGW node of described critical point; The critical point IAGW node identification information that record activates in attaching position register HLR.
According to said method of the present invention, if UE starts multinomial business simultaneously, when UE after switching between the ERS node, notify each professional corresponding critical point IAGW node updates GPRS Tunnel Protocol GTP exit address to be the ERS node address after switching.
According to said method of the present invention, activating under the PDP Context state, if adopt to be connected to grappling IAGW node by roaming place ERS node and to be connected to the mode that critical point IAGW node carries out business continuing, then at PDP information and the mobility management information of described grappling IAGW nodes records UE; Record grappling IAGW node identification information in HLR.
According to said method of the present invention, when UE switches between evolvement network inside or evolvement network and universal mobile telecommunications system UMTS, global system for mobile communications GSM, use GTP to carry; When UE switches between evolvement network and other non-3GPP networks, use mobile IP technology to carry.
When UE when described evolvement network switches to non-3GPP network, critical point IAGW node transfers home agent HA to; When UE when the network of non-3GPP switches to described evolvement network, roaming place IAGW node or ERS node transfer foreign agent FA to.
The present invention realizes providing concrete implementation method with the business continuing of external network to the evolvement network by two node layer frameworks, perfect existing two node layer architecture evolution network of network functions.
Description of drawings
Fig. 1 is the evolution network structure schematic diagram of two node layer frameworks;
Fig. 2 is based on the service link schematic diagram in the evolvement network of two node layer frameworks;
Fig. 3 adopts the service link change schematic diagram of ERS node-when critical point IAGW method of attachment is switched between the ERS node for user terminal;
Fig. 4 adopts the service link change schematic diagram of ERS node-when grappling IAGW node-critical point IAGW joint connecting method switches between the ERS node for user terminal;
Signaling process figure when Fig. 5 starts two business simultaneously and switches between the ERS node for user terminal is current;
Fig. 6 is the signaling process figure of user terminal when the ERS node is switched in a grappling IAGW intranodal roaming;
Fig. 7 is the signaling process figure of user terminal when switching between grappling IAGW node;
Signaling process figure when Fig. 8 moves for grappling IAGW node.
Embodiment
Service implementation method provided by the invention comprises:
The PDP Context of UE activating service;
If UE is in the scope of being administered with the relevant critical point IAGW node of business, then carry out business continuing by affiliated ERS node and described critical point IAGW node;
If UE moves to outside the scope that described critical point IAGW node administered, then be connected to described critical point IAGW node and carry out business continuing by roaming place ERS node; Perhaps with IAGW node under the roaming place as grappling IAGW node, be connected to described grappling IAGW node by roaming place ERS node, be connected to described critical point IAGW node by described grappling IAGW node again and carry out business continuing.
In the inventive method, concerning some application scenarios, serve as the fixing server of IP as UE, then UE must use fixed address (as fixed ip address).Like this, UE need contract and use fixedly IP operation, because fixedly IP is distributed by ownership IAGW, in such cases, if according to service needed, when UE activates the PDP Context of this fixed address, then belong to the IAGW node as critical point IAGW node, for the UE of fixed address, this ownership IAGW is the critical point IAGW of this fixed address correspondence all the time.
For common on-fixed address business (as above Internet), UE is when the PDP Context of activating service, directly as critical point IAGW node, be connected to external data network (as Internet) by roaming place IAGW node, distribute the UE address by roaming place IAGW node.Like this, this IAGW node also had been a critical point IAGW node for grappling IAGW node both.
In UE continuation moving process, the PDP Context of short of deexcitation current business, the IAGW node that then distributes the UE address are all the time as critical point IAGW node, and UE keeps addresses distributed constant.When UE moves to the following time of scope that other IAGW nodes are administered,, have two kinds of methods to keep the continuity of current business according to said method provided by the invention:
Method one: the IP link between ERS node by the roaming place and the original critical point IAGW node, continue to be connected to original critical point IAGW, insert external network again.
Method two: the ERS node of roaming place is connected to the IAGW node (as grappling IAGW node) under the roaming place, is linked into original critical point IAGW node again, is connected to external network.
If the PDP of UE deexcitation current business (on-fixed address class PDP) context after activating again, is then redistributed the UE address by IAGW node under the current roaming ground again, the IAGW node is as grappling and critical point IAGW node under the current roaming ground.
For the UE of signatory fixed address business, when using the on-fixed address professional in the roaming place, its connecting method comprises:
Method 1, by roaming place ERS node access belonging IAGW node, insert external network then;
Method 2, be connected to IAGW node (as grappling IAGW node) under the roaming place, be linked into ownership IAGW node again, be connected to external network by roaming place ERS node;
Method 3, be connected to IAGW node under the roaming place,, use then and should visit external network in new address by the new address (as critical point IAGW node) of the reallocation of the IAGW node under the roaming place by roaming place ERS node; Like this, under the situation of un-activation fixed address, can use professional PDP Context visit external network, with the accelerating network access speed.
As seen from the above description, when UE switches between the ERS node, can adopt method one and method two to carry out business continuing.Service link when Fig. 3 switches between the ERS node for UE employing method one (service link is connected to critical point IAGW node for the ERS node) changes schematic diagram.As seen from the figure, after UE roams into new ERS node, be connected to original critical point IAGW node or ownership IAGW node (also as critical point IAGW) carries out business continuing by the ERS node of this roaming place.In this Fig. 3, expression UE has started two business simultaneously, and a business is connected to external network (as on-fixed address class) by critical point IAGW; Another business is connected to external network (as the fixed address class) by ownership IAGW.
Service link when Fig. 4 adopts method two (service link is connected to critical point IAGW node for the ERS node is connected to grappling IAGW node) to switch between the ERS node for UE changes schematic diagram.As seen from the figure, after UE roams into new ERS node, with IAGW node under this roaming place as new grappling IAGW node, be connected to this new grappling IAGW node by roaming place ERS node, be connected to original critical point IAGW node or belong to the IAGW node by this new grappling IAGW node again and carry out business continuing.In this Fig. 4, expression UE has started two business simultaneously, and a business is connected to external network by critical point IAGW; Another business is connected to external network by ownership IAGW.
The hand off signaling flow process of UE between two ERS nodes be (carrying out business continuing with employing method one is example) as shown in Figure 5, in this flow chart, UE has started two business (use roaming place IAGW to carry out the Internet business simultaneously as UE and belong to fixedly IP operation of IAGW with use) simultaneously, therefore, in switching preparation, the ERS node will send migration request to the critical point of all connections IAGW node, and concrete signaling process is as follows:
1, reach the triggering switching condition when the UE communication quality, UE sends measurement report (MeasurementReport) and gives ERS node before switching;
2 and 3, if this ERS determines to switch, then there is the critical point IAGW node of connection to send migration demand (RELOCATION REQIRED) message to all, in this embodiment, suppose that UE uses the professional and fixing IP operation of Internet simultaneously, then to the fixing IAGW node transmission migration request message that belongs to of IP operation of the professional pairing critical point IAGW node of Internet and UE; Comprise the transparent vessel of new ERS (the be target ERS) node of old ERS (being source ERS) node after the switching before switching in the message, comprise E-I interface quantity (being the quantity that ERS is connected with IAGW) in this transparent vessel, it is 2 in the present embodiment; Radio Resource control container (RRC Container); Encryption/consistency protection information and channel information; Source ERS node identification (ID) and target ERS node identification information etc.;
4 and 5, after ownership IAGW node and critical point IAGW node are received migration request message, send migration request (RELOCATION REQUEST) message to target ERS node respectively, this message comprises the transparent vessel of source ERS node to target ERS node, and RAB (RAB) information that need set up etc.;
6 and 7, after target ERS node collects the RELOCATION REQUEST message of ownership IAGW node and critical point IAGW node, carry out the operations such as foundation of the foundation of radio open protocol stack, E-I user's face according to the content in the message; When resource is ready to, target ERS node sends migration request and replys (RELOCATION REQUEST ACKNOWLEDEG) message to all critical point IAGW node affirmation resource allocation successes, (set up successful RAB information, comprise target ERS address of node and address correlation for the transparent vessel of source ERS node and the information of setting up of RAB comprising target ERS node; Set up the RAB information of failure, comprise failure cause) etc.;
8 and 9, ownership IAGW node and critical point IAGW node judgement target ERS node resource distributes ready, decision continues migration, and sending migration order (RELOCATION COMMAND) message to source ERS node, notification source ERS node triggers the execution flow process of migration; Comprise the RAB tabulation that target ERS node gives the transparent vessel of source ERS node, will discharge, the information such as RAB tabulation that will carry out lossless migration in this message;
10, ERS node in source can make and carry out lossless migration in two ways: traditional data transfering method and method for dual-broadcast, and these two kinds of lossless migration modes are prior art, are not described in detail at this;
11, after ERS node in source is received all RELOCATION COMMAND message, stop to exchange with the data of UE, read target ERS node and reshuffle (PHYSICAL CHANNEL RECONFIGURATION) parameter to the physical link in the transparent vessel of source ERS node, and pass through Uu interface transmission PHYSICAL CHANNEL RECONFIGURATION message to UE, trigger UE and be linked into target ERS node sub-district; Comprise in this message that UE inserts necessary informations such as the frequency of target ERS node sub-district, power;
12, after UE receives PHYSICAL CHANNEL RECONFIGURATION message, receive target ERS node sub-district according to the information that reconfiguration message provides; After successfully inserting the sub-district, UE will send the message physical link and reshuffle and finish (PHYSICAL CHANNELRECONFIGURATION COMPLETE) message, notification target ERS node handover success;
13, after target ERS node is received PHYSICAL CHANNEL RECONFIGURATIONCOMPLETE message, send migration detection (RELOCATION DETECT) message and point out to detect UE to belonging to the IAGW node;
14, after target ERS node is received PHYSICAL CHANNEL RECONFIGURATIONCOMPLETE message, send RELOCATION DETECT message, point out to detect UE to critical point IAGW node;
15, target ERS node sends migration to ownership IAGW node and finishes (RELOCATIONCOMPLETE) message, and notice ownership IAGW node target ERS node has been finished transition process;
16, target ERS node sends RELOCATION COMPLETE message to critical point IAGW node, and notice critical point IAGW node target ERS node has been finished transition process;
17, IAGW node in critical point is received RELOCATION COMPLETE message, carries out E-I interface dispose procedure, and the E-I interface that is discharged into source ERS node connects;
18, ownership IAGW node is received RELOCATION COMPLETE message, carries out E-I interface dispose procedure, and the E-I interface that is discharged into source ERS node connects.
After finishing switching flow, critical point IAGW node and ownership IAGW node updates GPRS Tunnel Protocol (GTP) exit address are target ERS IP addresses of nodes.
When the PDP Context of UE deexcitation general service (as above Internet net), when activating the PDP Context of general service again again, with directly according to the IAGW node of up-to-date covering as critical point IAGW node, and distribute new address to UE; When UE moves to new following time of IAGW once more, similar above process.
Under the connection status of method one, the UE location management is fairly simple, under the situation that has activated PDP Context, critical point IAGW node remains the PDP information of UE (as the pdp address of UE, the PDP type, TEID for E-I (Tunnel Endpoint Identifier for E-I, the Tunnel Identifier of E-I interface), Qos etc.) and mobility management information (as the lane place at UE place, the ERS node identification information at UE place etc.) etc.And attaching position register (HLR) is writing down the identification information of all activated critical point IAGW node, and HLR (not deactivation status) in the UE moving process needn't upgrade the position of UE, unless UE changes critical point IAGW node.
If there are the data of the fixedly IP that sends to UE to arrive ownership IAGW node, if having with certain IAGW node, UE is connected, but the fixedly IP un-activation of UE, ownership IAGW querying node HLR, HLR returns with UE certain the IAGW address of node information that is connected, what ownership IAGW node notice inquired has this IAGW node that is connected that the data that send to UE are arranged with UE, and this IAGW node sends a request message and requires UE to activate the fixedly PDP Context of IP to UE, carries out business continuing.
When UE transfers free time (Idle) state to, then to initiate the position and upgrade, the IAGW node at place, roaming place is set up the UE mobility information, and the lane place situation at record UE place is upgraded HLR simultaneously and is write down this IAGW.Under the Idle state, suggestion is upgraded recorded information among the corresponding IAGW after roaming into new IAGW node, and the mobility information that remains the Idle state UE under the IAGW range of nodes is recorded in this IAGW node.When UE will initiate business, then with this IAGW node as critical point IAGW node.
As above routine, when UE is in the Idle state, and there is request of data to arrive fixedly IP of UE, then belong to IAGW querying node HLR, obtain the current on-site IAGW node address of UE, inquiry obtains the lane place at UE place, by carrying out paging to this lane place, asks UE to initiate the fixedly PDP context activation of IP after UE replys again.
If UE adopts method two provided by the invention to carry out business continuing, when UE switches, two kinds of situations are arranged between the ERS node:
First kind of situation is: do not change grappling IAGW node, promptly the ERS node of UE in grappling IAGW node institute compass of competency asked switching;
Second kind of situation is: change grappling IAGW node, promptly UE switches between grappling IAGW node.
Below the signaling process of both of these case is described respectively.
Referring to Fig. 6, be switching flow between the ERS node of UE in grappling IAGW node institute compass of competency, specifically comprise:
1, reach the triggering switching condition when the UE communication quality, UE sends measurement report (MeasurementReport) and gives ERS node before switching;
2, if this ERS node determines to switch, then send migration demand (RELOCATION REQIRED) message, comprise the information such as ERS (target ERS) node identification that comprise at least after switching preceding ERS (source ERS) node identification and switching in the message to grappling IAGW node;
3, after grappling IAGW node is received RELOCATION REQIRED message, send migration request (RELOCATION REQUEST) message to target ERS node, this message comprises the transparent vessel of source ERS node to target ERS node, and RAB (RAB) information that need set up etc.;
4, after target ERS node is received the RELOCATION REQUEST message of grappling IAGW node, carry out the operations such as foundation of the foundation of radio open protocol stack, E-I user's face according to the content in the message; When resource is ready to, target ERS node sends migration request and replys (RELOCATION REQUESTACKNOWLEDEG) message and confirm the resource allocation success for grappling IAGW node;
5, it is ready that grappling IAGW node is adjudicated the distribution of target ERS node resource, and the decision continuation is moved, and transmission is moved order (RELOCATION COMMAND) message to source ERS node, the execution flow process that the triggering of notification source ERS node is moved; Comprise the RAB tabulation that target ERS node gives the transparent vessel of source ERS node, will discharge, the information such as RAB tabulation that will carry out lossless migration in this message;
6, ERS node in source can make and carry out lossless migration in two ways: traditional data transfering method and method for dual-broadcast.These two kinds of lossless migration modes are prior art, are not described in detail at this;
7, after ERS node in source is received RELOCATION COMMAND message, stop to exchange with the data of UE, read target ERS node and reshuffle (PHYSICAL CHANNEL RECONFIGURATION) parameter to the physical link in the transparent vessel of source ERS node, and pass through Uu interface transmission PHYSICAL CHANNEL RECONFIGURATION message to UE, trigger UE and be linked into target ERS node sub-district; Comprise in this message that UE inserts necessary informations such as the frequency of target ERS node sub-district, power;
8, after UE receives PHYSICAL CHANNEL RECONFIGURATION message, receive target ERS node sub-district according to the information that reconfiguration message provides; After successfully inserting the sub-district, UE will send the message physical link and reshuffle and finish (PHYSICAL CHANNEL RECONFIGURATIONCOMPLETE) message, notification target ERS node handover success;
9, target ERS node sends RELOCATION COMPLETE message to grappling IAGW node, and notice grappling IAGW node target ERS node has been finished transition process;
10, grappling IAGW node is received RELOCATION COMPLETE message, carries out E-I interface dispose procedure, discharges to be connected with the E-I interface of source ERS node.
Fig. 7 is the signaling process figure of UE when switching between grappling IAGW node, in this case, adopts method two provided by the invention, need to change grappling IAGW node, UE is connected to critical point IAGW node by the grappling IAGW node after changing, and carries out business continuing, and idiographic flow comprises:
1, reach the triggering switching condition when the UE communication quality, UE sends measurement report (MeasurementReport) and gives ERS node before switching;
2, if this ERS determines to switch, then grappling IAGW (source IAGW) node before switching sends migration demand (RELOCATION REQIRED) message, includes the information such as target ERS node identification after switching preceding source ERS node identification and switching in the message at least;
3, after IAGW node in source was received the migration requirement message, IAGW (target IAGW) node under the target ERS node after switching sent request grappling migration (REQUEST ANCHORRELOCATION) message;
4, after target IAGW node is received request grappling migration message, send grappling migration request (ANCHOR RELOCATION REQUEST) message to target ERS node, this message comprises the transparent vessel of source ERS node to target ERS node, and RAB (RAB) information that need set up etc.;
5, after target ERS node is received the grappling migration request message of target IAGW node, carry out the operations such as foundation of the foundation of radio open protocol stack, E-I user's face according to the content in the message; When resource is ready to, target ERS node sends the grappling migration request and replys (ANCHOR RELOCATION REQUESTACKNOWLEDEG) message and confirm the resource allocation success for target IAGW node;
6, it is ready that target IAGW node is adjudicated the distribution of target ERS node resource, and the decision continuation is moved, and transmission is moved order (RELOCATION COMMAND) message to source ERS node, the execution flow process that the triggering of notification source ERS node is moved; Comprise the RAB tabulation that target ERS node gives the transparent vessel of source ERS node, will discharge, the information such as RAB tabulation that will carry out lossless migration in this message;
7, ERS node in source can make and carry out lossless migration in two ways: traditional data transfering method and method for dual-broadcast.These two kinds of lossless migration modes are prior art, are not described in detail at this;
8, after ERS node in source is received RELOCATION COMMAND message, send Radio Resource control information (RRC MESSAGE) by the Uu interface and give UE;
9, UE sends to target ERS node with the Radio Resource control information that receives, and realizes switching;
10, target ERS node sends migration to target IAGW node and finishes (RELOCATIONCOMPLETE) message, and notification target IAGW node target ERS node has been finished transition process;
11, target IAGW node sends RELOCATION COMPLETE to source IAGW node, and the indication switching is finished;
12, target IAGW node and critical point IAGW node carry out Signalling exchange, upgrade the corresponding PDP Context of storing among the IAGW of critical point;
13, IAGW node in source is carried out E-I interface dispose procedure, and the E-I interface that is discharged into source ERS node connects.
Under the connection status of method two, the UE location management is as follows: under the situation that has activated PDP Context, grappling IAGW node remains the PDP information of UE (as the pdp address of UE, the PDP type, IAGW address, critical point, TEid for Gn/Gp, TEid for E-I, ERS address, Qos, charging relevant information etc.) and mobility management information (as the lane place at UE place, the ERS ID at UE place etc.) etc.And HLR is writing down the identification information of grappling IAGW node, when UE moves under the new IAGW range of nodes, needs to upgrade grappling IAGW, shifts UE information to new IAGW, upgrades grappling IAGW sign among the HLR simultaneously.
If there are the data of the fixedly IP that sends to UE to arrive ownership IAGW node, if having with certain grappling IAGW node, UE is connected, but the fixedly IP un-activation of UE; Ownership IAGW querying node HLR obtains grappling IAGW address of node, and ownership IAGW node notice grappling IAGW node has the data that send to UE to arrive, and grappling IAGW node sends a request message to UE, requires UE to activate the fixedly PDP Context of IP.If UE is in the Idle state, then grappling IAGW sends paging in the lane place of UE, and after the UE response, request UE activates the fixedly PDP Context of IP.
When UE transfers the Idle state to, the IAGW node at place, roaming place is set up the UE mobility information, the lane place situation at record UE place.In the UE of Idle state moving process, after roaming into new IAGW range of nodes, upgrade the recorded information in the corresponding IAGW node.When UE initiates general service, then with this roaming place IAGW node as grappling and critical point IAGW node.
In the evolution network framework of two node layers, because between IAGW node and the ERS node is the IP link, IAGW node and ERS node may have the annexation of multi-to-multi, in this case, if UE moves under the new IAGW range of nodes, but link still satisfies communicating requirement between new ERS node and the original grappling IAGW node, then needn't change grappling IAGW node.
Have at IAGW node and ERS node under the situation of annexation of multi-to-multi,, but have reason such as link congestion between current ERS node and the grappling IAGW node, in the time of can not satisfying communicating requirement, also can carry out the replacing of grappling IAGW even UE does not move.
When Fig. 8 can not satisfy communicating requirement for the link congestion between old grappling IAGW node and the ERS node or communication delay, old grappling IAGW wished to move the signaling process figure of grappling IAGW, specifically comprises:
1, old grappling IAGW node sends request grappling migration (REQUEST ANCHORRELOCATION) message and gives new grappling IAGW node; Comprise in this message (as PDP type, addresses etc.) such as the mobility information (UE lane place etc.) of ERS nodal information (ERS node identification, user plane information etc.) that UE connects, IAGW node side RAB information (as the RAB parameter), UE and PDP information etc.;
2, after new grappling IAGW node is received message, can carry out Business Processing if think, then send grappling migration request (ANCHOR RELOCATION REQUEST) message and give the ERS node, notice ERS node will carry out the migration of grappling IAGW node, and the information that comprises the RAB information (as the RAB identification information) that user identification code (IMSI) is moved in the world of the UE that relates to, will move, new grappling IAGW node in the message is (as user plane information: new grappling IAGW IP addresses of nodes etc.) etc.;
3, after the ERS node is received message, prepare resource, set up user's face of new E-I interface;
4, resource ready after, the ERS node sends the grappling migration request, and to reply (ANCHORRELOCATION REQUEST ACK) the new grappling IAGW of message informing node ready, waits execution to be migrated;
5, new grappling IAGW node returns request grappling migration and replys (REQUEST ANCHORRELOCATION ACK) message to old grappling IAGW node, informs ready;
6, old grappling IAGW node decision whether continuation migration if wish to continue migration, then sends grappling migration order (ANCHOR RELOCATION COMMAND) and requires ERS to carry out the migration of grappling IAGW node;
7, the ERS node changes user's face to new grappling IAGW node after receiving grappling migration order, sends the grappling migration and finishes (ANCHOR RELOCATION COMPLETE) message to old grappling IAGW node, and informing removal is finished;
8, the ERS node sends the grappling migration simultaneously and finishes message to new grappling IAGW node, and informing removal is finished;
9, after new grappling IAGW node receives that message is finished in migration, initiate to upgrade PDP Context (Update PDP Context) flow process, upgrade the PDP Context of critical point IAGW node to the critical point IAGW node that all relate to;
10, old grappling IAGW node is initiated the E-I interface and is discharged flow process, discharges the E-I interface between itself and the ERS node.
After carrying out above-mentioned grappling IAGW node migration, communication link no longer passes through old grappling IAGW node, changes ERS node-Xin grappling IAGW node-critical point IAGW node link communication into.
UE is in evolvement network inside or evolvement network and UMTS (Universal MobileTelecommunications System, when switching universal mobile telecommunications system), can use GTP (GPRS Tunneling Protocol, GPRS Tunnel Protocol) carry, GTP is the technology of comparative maturity in the 3GPP mobile network.If UE switches between evolvement network and other non-3GPP networks, as at evolvement network and WLAN (wireless local area network) (Wireless Local Area Network; When switching WLAN), then preferably use mobile IP (Mobile IP) technology to carry, because other networks are generally all supported the MobileIP technology, so PDP in evolvement network, activating, in switching to non-3GPP network, critical point IAGW node transfer to home agent (Home Agent, HA).In like manner, when switching to evolvement network in the network of UE at non-3GPP, roaming place IAGW node or ERS node transfer to Foreign Agent (ForeignAgent, FA).
In sum, the invention provides two kinds of UE and be linked into the implementation method that external network carries out service interaction by two node layer evolvement networks.First method only arrives critical point IAGW node two-layer node through the ERS node, and mutual signaling is few, realizes simple; But the IP link between ERS node and the IAGW node is required high, and to critical point IAGW node as seen UE switches between the ERS node, when especially UE being had a plurality of critical points IAGW node, switching between ERS need be notified all critical point IAGW nodes, causes efficient lower.And second method adopts the ERS node to arrive the service link that grappling IAGW node arrives critical point IAGW node again, and grappling IAGW node has shielded the following layer-two mobility of UE to critical point IAGW node.Especially be connected under the situation of a plurality of critical points IAGW node at UE, if do not change grappling IAGW node, the switching between ERS only need be switched an E-I interface link.Because it is little that the likelihood ratio of change grappling IAGW node changes the probability of ERS node, so method two switching efficiency ratio method one height.Simultaneously, owing to be high-speed link between the IAGW node, method two requires to reduce to Backhaul (backhaul) link between IAGW node and the ERS node, provides cost savings.
In addition, because between IAGW node and the ERS node is the IP link, when IAGW node and ERS node have the annexation of multi-to-multi, if UE moves between the IAGW node, but grappling IAGW node originally and move after new ERS node between the link that connects can guarantee communication quality, can not change grappling IAGW node.On the other hand, when the link communication quality that is connected between the ERS at UE place node and the original grappling IAGW node does not reach communicating requirement, under the constant situation of ERS node, also can carry out the migration of grappling IAGW, realize balancing link load and node load equilibrium.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (19)
1, a kind of service implementation method, the user terminal UE of evolvement network that is applied to two node layer structures in moving process with the service interaction of external network, it is characterized in that comprising:
The grouped data packet protocol PDP Context of UE activating service;
If UE is in the scope of being administered with the relevant critical point IAGW node of business, then carry out business continuing by affiliated ERS node and described critical point IAGW node;
If UE moves to outside the scope that described critical point IAGW node administered, then be connected to described critical point IAGW node and carry out business continuing by roaming place ERS node; Perhaps with IAGW node under the roaming place as grappling IAGW node, be connected to described grappling IAGW node by roaming place ERS node, be connected to described critical point IAGW node by described grappling IAGW node again and carry out business continuing.
2, the method for claim 1 is characterized in that, is connected by the IP link between described ERS node and critical point IAGW node or the grappling IAGW node.
3, method as claimed in claim 2 is characterized in that, realizes that by the IP link multi-to-multi is connected between described ERS node and critical point IAGW node or the grappling IAGW node.
4, method as claimed in claim 3 is characterized in that, if the ERS node of the current connection of UE and the link between the grappling IAGW node can not satisfy communicating requirement, then changes grappling IAGW node to a new IAGW node.
5, method as claimed in claim 4 is characterized in that, described replacing grappling IAGW node comprises the steps:
Old grappling IAGW node before A, the replacing sends the new grappling IAGW node that request grappling migration message changes to hope;
B, new grappling IAGW node send the ERS node of grappling migration request message to the current connection of UE, and notice ERS node will carry out the migration of grappling IAGW node;
C, described ERS node are prepared resource, and are established to user's face of the E-I interface of new grappling IAGW; After resource is ready to complete, send grappling migration request response message and notify new grappling IAGW node resource to prepare, wait execution to be migrated;
D, new grappling IAGW node return request grappling migration response message and give old grappling IAGW node, inform and prepare to receive migration;
E, old grappling IAGW node send grappling migration order to described ERS node;
F, described ERS node receive that grappling migration order back changes user's face to new grappling IAGW node, send the grappling migration simultaneously and finish message to new grappling IAGW node and old grappling IAGW node, and informing removal is finished;
After G, new grappling IAGW node receive that message is finished in migration, initiate to upgrade the PDP Context flow process, upgrade the PDP Context of critical point IAGW node to the critical point IAGW node that all relate to; After old grappling IAGW node receives that message is finished in migration, initiate the E-I interface and discharge flow process, discharge the E-I interface between itself and the ERS node.
6, method as claimed in claim 3, it is characterized in that, in the time of in UE roams into the scope that a new IAGW node administered, if the link between roaming place ERS node and the old grappling IAGW node satisfies communicating requirement, then will this old IAGW node as grappling IAGW node.
7, the method for claim 1, it is characterized in that, started multinomial business if UE is current, when UE when source ERS node roams into target ERS node, need to initiate migration request to each professional pairing critical point IAGW node simultaneously, set up target ERS node and be connected with business between each professional pairing critical point IAGW node.
8, method as claimed in claim 7 is characterized in that, described UE roams into target ERS node from source ERS node and initiates migration request to each professional pairing critical point IAGW node simultaneously, comprises as follows
Concrete steps:
A, source ERS node are initiated the migration demand respectively to each professional pairing critical point IAGW node;
B, each professional pairing critical point IAGW node are initiated migration request to target ERS node respectively;
C, target ERS node are after resource is ready to complete, respectively to each professional pairing critical point IAGW node remigration request-reply;
D, each professional pairing critical point IAGW node send the migration order to source ERS node respectively, carry out lossless migration between source ERS node and the target ERS node;
E, after UE successfully is linked into target ERS node, target ERS node sends migration to each professional pairing critical point IAGW node respectively and finishes message, each professional pairing critical point IAGW node discharges the E-I interface between itself and the source ERS node respectively.
9, the method for claim 1 is characterized in that, after UE roaming, if the PDP Context of UE deexcitation current business and activating again again, then with IAGW node under the current roaming ground as critical point IAGW node.
10, method as claimed in claim 9 is characterized in that, if UE continues to roam into outside the compass of competency of described critical point IAGW node, then is connected to described critical point IAGW node by the ERS node of roaming place once more and carries out business continuing.
11, method as claimed in claim 9, it is characterized in that, if UE continues to roam into outside the compass of competency of described critical point IAGW node, the IAGW node is as grappling IAGW node under then inciting somebody to action once more the roaming place, be connected to this grappling IAGW node by roaming place ERS node once more, be connected to described critical point IAGW node by this grappling IAGW node again and carry out business continuing.
12, the method for claim 1 is characterized in that, if UE is the fixed address contracted user, when current business is the fixed address business, then it is belonged to the IAGW node as described critical point IAGW node.
13, method as claimed in claim 12, it is characterized in that, if the IAGW node of UE ownership receives the business that sends to the UE fixed address, and during the current PDP Context that does not activate fixed address of UE, then the IAGW node by the current connection of UE sends the request that activates fixed address to UE;
The PDP Context that UE activates fixed address carries out business continuing.
14, method as claimed in claim 12 is characterized in that, when UE uses the on-fixed address professional in the roaming place, is linked into ownership IAGW node by roaming place ERS node and carries out business continuing; Perhaps
IAGW node under the roaming place as grappling IAGW node, is connected to described grappling IAGW node by roaming place ERS node, is connected to ownership IAGW node by described grappling IAGW node again and carries out business continuing; Perhaps
By with IAGW node under the roaming place as critical point IAGW node, be linked into this critical point IAGW node by roaming place ERS node and carry out business continuing.
15, as the described method of claim 1-14, it is characterized in that, activating under the PDP Context state, be connected to the mode that critical point IAGW node carries out business continuing by the ERS node, then PDP information and the mobility management information of record UE in the IAGW node of described critical point if adopt; The critical point IAGW node identification information that record activates in attaching position register HLR.
16, method as claimed in claim 15 is characterized in that, if UE starts multinomial business simultaneously, when UE after switching between the ERS node, notify each professional corresponding critical point IAGW node updates GPRS Tunnel Protocol GTP exit address to be the ERS node address after switching.
17, as the described method of claim 1-14, it is characterized in that, activating under the PDP Context state, if adopt to be connected to grappling IAGW node by roaming place ERS node and to be connected to the mode that critical point IAGW node carries out business continuing, then at PDP information and the mobility management information of described grappling IAGW nodes records UE; Record grappling IAGW node identification information in HLR.
18. as the described method of claim 1-14, it is characterized in that, when UE switches between evolvement network inside or evolvement network and universal mobile telecommunications system UMTS, global system for mobile communications GSM, use GTP to carry; When UE switches between evolvement network and other non-3GPP networks, use mobile IP technology to carry.
19, method as claimed in claim 18 is characterized in that, when UE when described evolvement network switches to non-3GPP network, critical point IAGW node transfers home agent HA to; When UE when the network of non-3GPP switches to described evolvement network, roaming place IAGW node or ERS node transfer foreign agent FA to.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102421152A (en) * | 2007-04-20 | 2012-04-18 | 华为技术有限公司 | Method and device for identifying bearing type |
| CN103327642A (en) * | 2012-03-21 | 2013-09-25 | 中兴通讯股份有限公司 | Data transmitting method and device |
| CN103686883A (en) * | 2012-09-20 | 2014-03-26 | 上海贝尔股份有限公司 | Method and device for performing data flow migration in multiple wireless access networks |
| CN109743726A (en) * | 2018-12-05 | 2019-05-10 | 江苏鑫软图无线技术股份有限公司 | The method of static terminal is shared under a kind of LTE system roaming scence |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2356770A (en) * | 1999-11-23 | 2001-05-30 | Ericsson Telefon Ab L M | SRNS relocation in a UMTS network |
| EP1364549B1 (en) * | 2001-02-27 | 2007-10-17 | Nokia Siemens Networks Gmbh & Co. Kg | Method for relocating the diversity point of a mobile station in a radio access network |
| ITMI20021724A1 (en) * | 2002-08-01 | 2004-02-02 | Siemens Mobile Comm Spa | CONTROLLER FOR GSM AND 3G BASE RADIO STATIONS IN ONE CORE |
| CN1301631C (en) * | 2004-05-18 | 2007-02-21 | 中兴通讯股份有限公司 | Method for providing third-party positioning for GSM user (2) |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102421152A (en) * | 2007-04-20 | 2012-04-18 | 华为技术有限公司 | Method and device for identifying bearing type |
| CN103327642A (en) * | 2012-03-21 | 2013-09-25 | 中兴通讯股份有限公司 | Data transmitting method and device |
| CN103327642B (en) * | 2012-03-21 | 2018-06-15 | 中兴通讯股份有限公司 | Data transmission method and device |
| CN103686883A (en) * | 2012-09-20 | 2014-03-26 | 上海贝尔股份有限公司 | Method and device for performing data flow migration in multiple wireless access networks |
| CN109743726A (en) * | 2018-12-05 | 2019-05-10 | 江苏鑫软图无线技术股份有限公司 | The method of static terminal is shared under a kind of LTE system roaming scence |
| CN109743726B (en) * | 2018-12-05 | 2021-11-23 | 江苏鑫软图无线技术股份有限公司 | Method for sharing static terminal in LTE system roaming scene |
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