CN101035308A - Radio communication system and mobility management method - Google Patents
Radio communication system and mobility management method Download PDFInfo
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- CN101035308A CN101035308A CNA2006100592989A CN200610059298A CN101035308A CN 101035308 A CN101035308 A CN 101035308A CN A2006100592989 A CNA2006100592989 A CN A2006100592989A CN 200610059298 A CN200610059298 A CN 200610059298A CN 101035308 A CN101035308 A CN 101035308A
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Abstract
The invention discloses a wireless communication system and a mobile management method. And the wireless communication system comprises first wireless network and second wireless network, where the location area marks broadcasted by the first and second wireless networks are the same, and received by mobile terminal so as to make the mobile terminal in idle mode not initiate any location updating flow when roaming between the first and second wireless networks; and the configuration information of at least one support node of the core networks of the first and second wireless networks is set with information of expressing preferred network.
Description
Technical field
The present invention relates to the wireless mobile communications field, relate in particular to wireless communication system and motion management method.
Background technology
Universal mobile telecommunications system (Universal Mobile TelecommunicationsSystem, UMTS) be to adopt Wideband Code Division Multiple Access (WCDMA) to insert (Wideband Code DivisionMultiple Access, WCDMA) 3-G (Generation Three mobile communication system) of air interface technologies (3G) also calls the WCDMA communication system to UMTS usually.As shown in Figure 1, UMTS has adopted and the similar structure of second generation mobile communication system (2G), comprises Radio Access Network (Radio Access Network, RAN) 20 and core network (CoreNetwork, CN) 30.Wherein Radio Access Network 20 is used to handle all and wireless function associated, and core network 30 handles that all voice calls are connected with data in the UMTS, and the exchange and the routing function of realization and external network 40.Core network is from being divided into circuit commutative field (Circuit Switched Domain, CS) 32 and packet-switched domain (PacketSwitched Domain, PS) 34 in logic.UMTS Terrestrial radio access network (UMTS TerritorialRadio Access Network, UTRAN) 20, core network 30, (UserEquipment, UE) 10 have constituted whole UMTS together with subscriber equipment.
As shown in Figure 2, UTRAN comprises one or several RNS (RadioNetwork Subsystem, RNS) 22.RNS 22 by a radio network controller (Radio Network Controller, RNC) 24 and one or more base station (NodeB) 26 form.Interface between radio network controller 24 and the core network 30 is the Iu interface, and NodeB 26 and radio network controller 24 are connected by Iub interface.In UTRAN inside, interconnected by the Iur interface between the radio network controller 24, the Iur interface can connect or connect by transmission network by the direct physical between the radio network controller 24.Radio network controller 24 is used for distributing and is attached thereto with control or the Radio Resource (Radio Resource) of relevant NodeB 26.26 of NodeB finish the conversion of the data flow between Iub interface and the Uu interface, also participate in a part of RRM simultaneously.
NodeB 26 is base stations of WCDMA system, comprises radio receiving-transmitting unit and Base-Band Processing parts.By the Iub interface and radio network controller 24 interconnection of standard, mainly finish the processing of Uu interface physical layer protocol.Its major function is spread spectrum, modulation, chnnel coding and despreading, demodulation, channel-decoding, also comprises the functions such as mutual conversion of baseband signal and radiofrequency signal.
The above network architecture is based on the 3GPP Rel6 framework of version in the past, 3GPP (3rd Generation Partnership Project) is studying a kind of brand-new evolution network framework at present, to satisfy the application demand of mobile network in 10 years futures even longer time.Owing to be a kind of brand-new network architecture, substantial variation all will take place in all nodes, function and the flow process of therefore existing framework.
3GPP considers the competitiveness of future network, at present just in the 3GPP of a kind of evolution of active research network system, have a variety of evolution schemes to launch discussion at 3GPP at present, the purpose of network evolution is to be desirable to provide a kind of low time delay, high data rate, high power system capacity and covering, low cost, complete IP-based network.
Wherein, one of target of network evolution is exactly to realize the UMTS Terrestrial radio access network of evolution (Evolved UMTS Territorial Radio Access Network, E-UTRAN) and UTRAN, GSM EDGE Radio Access Network (GSM/EDGE Radio AccessNetwork, GERAN) mobile management between, proposed a kind of scheme that solves mobile management between described 3GPP connecting system at present, this scheme is based on as shown in Figure 3 the network architecture.
(Radio Access Type, RAT) the mobile management scheme between is for the scheme that is based on different access technologies of the planning employing of lane place for existing different radio access style.As shown in Figure 3, Long Term Evolution (Long Term Evolution, LTE) the route district (Routing Area, RA) 52 are the E-UTRAN sub-district of evolution, 2G/3G route district 50 is UMTS or the GPRS sub-district in the legacy network.When as System Architecture Evolution (the System Architecture Evolution of mobile terminal user equipment 10 in evolution, SAE) when network and traditional 2G/3G inter-network roaming, subscriber equipment 10 need be initiated the Routing Area Update process to network side in order to receive the business that network provides.Under this network architecture, the Routing Area Update flow process that subscriber equipment is initiated is as follows:
1) enter under the SAE network coverage of evolution under the 2G/3G network coverage when subscriber equipment 10, subscriber equipment 10 is by monitoring evolvement network Routing Area Identifier (identify) information that broadcast channel obtains its place.Find not match with original 2G/3G network Routing Area Identifier, then subscriber equipment 10 is initiated the Routing Area Update flow process to network side.
2) subscriber equipment 10 sends a Routing Area Update request to MME/UPE (Mobility Management Entity, Mobility Management Entity; User Plane Entity, user plane entity) 82, message comprises original log-on message (as temporary identity etc., if there is not temporary identity just to use permanent identity).The Routing Area Update request can also comprise default IP access bearer (Access Bearer) information (as user preferred IP address and APN).
3) the MME/UPE 82 former registration information that will receive sends to original MME/UPE 25 to obtain user's information.
4) original MME/UPE 25 sends user profile (as permanent user identity) to new MME/UPE 82.
5) subscriber equipment carries out authentication by new MME/UPE 82.
6) new MME/UPE 82 will self register the service node of subscriber equipment 10.
7) information of subscriber equipment 10 is with deleted in former MME/UPE 25, and perhaps subscriber equipment 10 is flagged as not at this service area.
8) home subscriber server (Home Subscriber Server, HSS) 60 confirm that MME/UPE 82 succeed in registration, the user signing contract information of licensing default IP access bearer is transferred to MME/UPE 82, charging policy information is also transferred to MME/UPE 82 thereupon.
9) select Inter AS Anchor 70.
10) Inter AS Anchor 70 configuration of IP layers.User plane is set up between UPE-Inter ASAnchor, and uses default charging and strategy.
11) (Quality ofService, QOS) configuration information offers the Radio Access Network of evolution to MME/UPE 82 with the service quality of default IP access bearer.MME/UPE 82 accepts the position updating request of subscriber equipment 10, and is that subscriber equipment 10 distributes a temporary mark.
12) MME/UPE 82 confirms the success of subscriber equipment Routing Area Update.
From top flow process as can be seen, there is following shortcoming in mobile management scheme under the idle pulley (LTE_IDLE) between existing different radio access style: under idle pulley, when subscriber equipment moves to the SAE/LTE connecting system from 2G/3G, a series of processes with the occurrence positions renewal, comprise the transfer of customer equipment context between the MME/UPE (UEContext), MME registers to HSS, UPE does routing update etc. to Inter AS Anchor, therefore will cause the location management signaling traffic under a series of idle pulley.And because evolvement network networking initial stage E-UTRAN cell coverage area is less, roaming along with subscriber equipment, it frequently moves between E-UTRAN and UTRAN, GERAN, thereby causes system frequently to carry out the flow process that the position is upgraded, and has greatly increased the signaling traffic load under the idle pulley.
Summary of the invention
Main purpose of the present invention is to provide a kind of motion management method and wireless communication system, is used to overcome the frequent system that causes that moves between the access network of different radio access style that limitation and defective owing to prior art cause and frequently carries out the problem that the position is upgraded.
To achieve these goals, according to a first aspect of the invention, the invention provides a kind of wireless communication system.This wireless communication system comprises first wireless network and second wireless network.When the received Location Area Identification of the portable terminal under being in idle pulley changed, it initiated more new technological process of position.First wireless network is identical with the Location Area Identification that second wireless network is broadcast, and when the feasible portable terminal that is under the idle pulley is roamed between first wireless network and second wireless network, does not initiate more new technological process of position.
In this wireless communication system, the coverage of first wireless network and second wireless network can be overlapped.A kind of in first wireless network and second wireless network can be alternative evolvement network.A kind of in first wireless network and second wireless network can comprise at least a in 2G, 2.5G and the 3G network.Location Area Identification can be Routing Area Identifier or tracking area identification.
To achieve these goals, according to a second aspect of the invention, the invention provides a kind of motion management method.For many network's coverage areas are provided with identical Location Area Identification.Location Area Identification is received by portable terminal, thereby makes the portable terminal that is under the idle pulley when many inter-network roamings, does not initiate more new technological process of position.
Many networks can comprise first wireless network and second wireless network.The coverage of first wireless network and second wireless network can be overlapped.A kind of in first wireless network and second wireless network can be alternative evolvement network.A kind of in first wireless network and second wireless network can comprise at least a in 2G, 2.5G and the 3G network.
Location Area Identification can be Routing Area Identifier or tracking area identification.The Location Area Identification of first wireless network can be the Routing Area Identifier of this network's coverage area, and the Location Area Identification of second wireless network directly is set to the Routing Area Identifier of first wireless network.
To achieve these goals, according to a third aspect of the invention we, the invention provides a kind of motion management method.Be provided for representing the information of preferred network in the configuration information of at least one support node in the support node in the core net of the support node in the core net of first wireless network and second wireless network.
The coverage of first wireless network and second wireless network can be overlapped.A kind of in first wireless network and second wireless network can be alternative evolvement network.
Be used to represent that the information of preferred network can be selected from the group that comprises following content: preferred network not; Preferred first wireless network, the context of portable terminal are retained in the core net of first wireless network; And preferred second wireless network, the context of portable terminal is retained in the core net of second wireless network.
The step that is provided for representing the information of preferred network can be by increasing a field in the configuration information in support node, and field can be 3 bits, and its value is corresponding to the contextual preferred preservation network site of portable terminal.
If second wireless network is a preferred network, then when portable terminal during from the 3rd wireless network roaming to the first wireless network, by the Location Area Identification and the Location Area Identification of its preservation that is relatively issued by broadcast channel, judgement initiation location area updating flow process comprises following signaling process:
1) portable terminal sends the register requirement comprise former registration information first support node in the core net of first wireless network;
2) the first support node former registration information that will receive sends to the former support node in the core net of the 3rd wireless network, to obtain user profile;
3) former support node sends user profile to first support node;
4) portable terminal carries out authentication by first support node;
5) first support node is checked the preferred network information of configuration in it and the access capability of portable terminal, the judgement portable terminal should reside in second wireless network side, first support node is selected a new support node in the core net of second wireless network, and to its transmission user's context configuration request message, asking this new support node is that portable terminal generates MM Context;
6) new support node will self be registered the service node of portable terminal;
7) mobile-terminal text is with deleted in former support node, and perhaps portable terminal is flagged as not at its service area;
8) home subscriber server confirms that new support node succeeds in registration, and user signing contract information is transferred to new support node, and charging policy information is also transferred to new support node thereupon;
9) new support node is accepted the network attachment of portable terminal, and distributes a temporary identity to give portable terminal, and finishes to the configuration of first support node affirmation user's context; And
10) after first support node is received user's context configuration response message, finish to portable terminal affirmation registration.
The type of the 3rd wireless network can be identical with a kind of type in first wireless network and second wireless network.
By technique scheme, the present invention has realized following technique effect.Because the identical Location Area Identification of network using of different radio access style, make portable terminal when the internetwork roaming of the overlay area of the network of different radio access style, can not initiate the flow process that the position is upgraded, avoid because system frequently carries out more rolling up of loading of the signaling traffic under the idle pulley that causes of new technological process of position.In addition, keep the actual residing network of portable terminal and the consistency of the network that keeps mobile-terminal text, effectively reduced the migration of mobile-terminal text.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the UMTS system construction drawing;
Fig. 2 is the UTRAN network structure;
Fig. 3 illustrates moving between 3GPP SAE/LTE and 2G/3G connecting system;
Fig. 4 is the flow chart according to motion management method of the present invention;
Fig. 5 is the block diagram according to wireless communication system of the present invention;
Fig. 6 is the flow chart according to motion management method of the present invention;
Fig. 7 is the evolution route section planning schematic diagram according to the embodiment of the invention;
Fig. 8 is the structural representation according to the evolution route district of the embodiment of the invention; And
Fig. 9 illustrates the subscriber equipment attachment flow according to the embodiment of the invention.
Embodiment
Describe the present invention below with reference to the accompanying drawings in detail.
The present invention is based on existing evolution network framework, the programme of lane place between a kind of new different radio access style has been proposed, and mobile management scheme based on this lane place programme has been proposed, effectively solve subscriber equipment frequent system that causes that moves between E-UTRAN and UTRAN, GERAN and frequently carried out the problem that the position is upgraded.
As shown in Figure 4, wireless communication system provided by the present invention comprises: first wireless network 1; Second wireless network 2.When route district that the subscriber equipment 10 under being in idle pulley is received or tracking area identification changed, it initiated more new technological process of position.First wireless network 1 is identical with route district or tracking area identification that second wireless network 2 is broadcast, when the feasible subscriber equipment 10 that is under the idle pulley is roamed between first wireless network 1 and second wireless network 2, does not initiate more new technological process of position.
In this wireless communication system, the coverage of first wireless network 1 and second wireless network 2 can be overlapped.A kind of in first wireless network 1 and second wireless network 2 can be alternative evolvement network.A kind of in first wireless network 1 and second wireless network 2 can be 2G, 2.5G or 3G network.
As shown in Figure 5, motion management method provided by the present invention is included as many network's coverage areas identical Location Area Identification is set, and when portable terminal during at many inter-network roamings, portable terminal obtains Location Area Identification, and does not initiate more new technological process of position.Many networks comprise first wireless network and second wireless network.Concrete steps are as follows: S100 makes first wireless network broadcast identical Location Area Identification with second wireless network; S102, when subscriber equipment when being in idle pulley, it receives the Location Area Identification that wireless network is broadcast; And S104, when subscriber equipment is roamed, do not initiate more new technological process of position between first wireless network and second wireless network.
The coverage of first wireless network and second wireless network can be overlapped.A kind of in first wireless network and second wireless network can be alternative evolvement network.A kind of in first wireless network and second wireless network can be 2G, 2.5G or 3G network.Location Area Identification can be Routing Area Identifier or tracking area identification.
As shown in Figure 6, another kind of motion management method provided by the present invention may further comprise the steps: S200, increase a field in the configuration information of the support node in the core net of the core net of first wireless network and/or second wireless network, this field can be 3 bits, and its value is corresponding to the contextual preferred preservation network site of subscriber equipment; S202 makes field represent preferred network information, and is for example, not preferred; Preferred first wireless network, the context of subscriber equipment are retained in the core net of first wireless network; And preferred second wireless network, the context of subscriber equipment is retained in the core net of second wireless network.
If when being configured to preferred first wireless network (S204), then, initiate more new technological process (S206) of position when subscriber equipment during from the 3rd wireless network roaming to the second wireless network.If when being configured to preferred second wireless network (S208), then, initiate more new technological process (S210) of position when subscriber equipment during from the 3rd wireless network roaming to the first wireless network.
The coverage of first wireless network and second wireless network can be overlapped.A kind of in first wireless network and second wireless network is alternative evolvement network.The type of the 3rd wireless network is identical with a kind of type in first wireless network and second wireless network.
The Location Area Identification that first wireless network and second wireless network are broadcast can be identical.No matter whether first wireless network and second wireless network Location Area Identification of broadcasting is identical, can comprise the information that is used to represent preferred network in the configuration information of the support node in the core net of the core net of first wireless network and/or second wireless network, this is used to represent that the information of preferred network can be the field that increases.
If second wireless network is configured to preferred network, then when subscriber equipment during from the 3rd wireless network roaming to the first wireless network, by the Location Area Identification and the Location Area Identification of its preservation that is relatively issued by broadcast channel, judgement initiation location area updating flow process comprises following signaling process:
1) subscriber equipment sends the register requirement comprise former registration information first support node in the core net of first wireless network;
2) the first support node former registration information that will receive sends to the former support node in the core net of the 3rd wireless network, to obtain user profile;
3) former support node sends user profile to first support node;
4) subscriber equipment carries out authentication by first support node;
5) first support node is checked the preferred network information of configuration in it and the access capability of subscriber equipment, the judgement subscriber equipment should reside in second wireless network side, first support node is selected a new support node in the core net of second wireless network, and to its transmission user's context configuration request message, asking this new support node is that subscriber equipment generates MM Context;
6) new support node will self be registered the service node of subscriber equipment;
7) customer equipment context is with deleted in former support node, and perhaps subscriber equipment is flagged as not at its service area;
8) home subscriber server confirms that new support node succeeds in registration, and user signing contract information is transferred to new support node, and charging policy information is also transferred to new support node thereupon;
9) new support node is accepted the network attachment of subscriber equipment, and distributes a temporary identity to give subscriber equipment, and finishes to the configuration of first support node affirmation user's context;
10) after first support node is received user's context configuration response message, finish to subscriber equipment affirmation registration.
[embodiment one]
At new evolution route district (Evolved Routing Area, ERA) in the programme, the zone of original 2G/3G network coverage still keeps original route section planning, the zone that evolvement network covers is then adopted and is united the mode of planning with traditional 2G/3G network in area, forms evolution route district (evolution route district can also self-defined being called: unified (unified) route district, associating (united) route district, joint (joint) route district, association (associated) route district or make up (combined) route district).In the present embodiment, original 2G/3G network can be considered as first wireless network, evolvement network is considered as second wireless network.
Shown in Figure 7 is evolution route section planning schematic diagram.Have three types the network coverage among the figure: by the UTRAN sub-district of the 3G network of radio network controller 24 management; By wireless station, border (Edge Radio Station, ERS) the E-UTRAN network cell of the evolvement network of 84 management; By base station controller (Base Station Controller, BSC) the GERAN sub-district of the 2G network of 28 management.Wherein because the GERAN sub-district of BSC 28 controls is independently traditional 2G/3G network coverage, then a plurality of routes district 56 is resolved into according to existing route section planning scheme in the sub-district under the BSC 28.And the E-UTRAN sub-district of the UTRAN sub-district of radio network controller 24 controls and ERS 84 controls covers areal, therefore unified planning is carried out in UTRAN sub-district and E-UTRAN sub-district, forms unified evolution route district 54.
As shown in Figure 8, evolution route district is made up of two parts: the route district RA 56 that the UTRAN sub-district under traditional 3G network covers is formed; Tracking area TA1 58 and TA2 59 that the E-UTRAN sub-district that evolvement network covers is formed.In evolution route section planning scheme, all define a Routing Area Identifier at each evolution route district.Consider the demand of evolvement network smooth evolution from existing 2G/3G network, the mode that can adopt the E-UTRAN sub-district that evolvement network is covered to be incorporated into the route district of legacy network is planned evolution route district.The sign of the tracking area TA 58,59 that promptly newly-increased E-UTRAN sub-district is formed directly adopts the sign of the route district RA 56 of original UTRAN sub-district composition.
When subscriber equipment 10 is roamed in evolution route district, no matter be to cover the E-UTRAN sub-district that UTRAN sub-district down roams into the evolvement network covering from traditional 3G network, still roam into the UTRAN sub-district under traditional 3G network covering from the E-UTRAN sub-district that evolvement network covers, because the Location Area Identification of two kinds of network coverages is identical, subscriber equipment 10 can not initiated the flow process that the position is upgraded, avoided since the less system that causes of evolvement network networking initial stage E-UTRAN cell coverage area frequently carry out the position more new technological process and thus greatly the signaling traffic under the idle pulley of increase load.
[embodiment two]
The present invention has proposed a kind of according to the resident Routing Area Update scheme of tactful preferred wireless access style on the basis of evolution route section planning scheme.The implementation method of optimization technique is as follows: will control same evolution route district ERA Serving GPRS Support Node (ServingGPRS Support Node, SGSN) and evolution system SAE MME/UPE be planned to a resource pool.Increase the field of a 3bit in the configuration information of SGSN or MME, be used to keep the preferred network information of operator's configuration, the field set-up mode is: 000 represents not preferred network; The preferred E-UTRAN network of 001 expression, when subscriber equipment quartered at this evolution route district ERA, its context was kept by the SAE MME in the pond; The preferred 2G/3G network of 010 expression, when subscriber equipment quartered at this evolution route district ERA, its context was kept by SGSN in the pond.Simultaneously, can carry out flexible expansion, only need increase new definition and get final product this field to this programme.
Use the method for this kind routing update, when preferred E-UTRAN network,,, can obtain the good service of evolvement network easily when subscriber equipment is in the E-UTRAN network coverage following time because the context of subscriber equipment is kept at the evolvement network side all the time; The initial stage of networking is preferred GSM network then, and this moment, the context of subscriber equipment was kept among the SGSN all the time.Because the networking initial stage, the networking of E-UTRAN network is limited in scope, subscriber equipment will be under the overwhelming majority's the situation under the existing 2G/3G covering, keep the actual residing network of subscriber equipment and the consistency of the network that keeps customer equipment context, effectively reduced the migration of customer equipment context.
Similar embodiment one can be considered as first wireless network with original 2G/3G network, and evolvement network (E-UTRAN network) is considered as second wireless network.Support node in the core net of first wireless network is SGSN so, and the support node in the core net of second wireless network is MME/UPE.
Realization that it should be noted that present embodiment can be based on the realization of embodiment one, but also can be achieved under the Location Area Identification that first wireless network and second wireless network are broadcast situation inequality.
Fig. 9 illustrates the full message flow process of subscriber equipment Routing Area Update under the situation that E-UTRAN is a preferred network.This is that hypothesis E-UTRAN network is configured to preferred network, and subscriber equipment roams to the situation in this evolution route district from another E-UTRAN route district.According to actual conditions, also may be that the 2G/3G network is configured to preferred network.In addition, residing the 3rd wireless network also may be the 2G/3G network before the user's set roaming.The flow process that this subscriber equipment adheres to is described below:
1) subscriber equipment 10 roams to the UTRAN network coverage part in evolution route district, by the Routing Area Identifier and the Routing Area Identifier of its preservation that broadcast channel relatively issues, judgement initiation Routing Area Update flow process.Subscriber equipment 10 sends a register requirement to SGSN 28, and message comprises original log-on message (as temporary identity etc., if there is not temporary identity just to use permanent identity).
2) the SGSN 28 former registration information that will receive sends to original MME/UPE82a, to obtain user's information.
3) original MME/UPE 82a sends user profile (as permanent user identity) to SGSN 28.
4) subscriber equipment 10 carries out authentication by SGSN 28.
5) SGSN 28 checks preferred network information of configuration in it and the access capability of subscriber equipment 10 (whether can cut-in evolution network), and judgement subscriber equipment 10 should reside in the evolvement network side.Because base station (the Evolved NodeB of MME/UPE and evolution, ENB) between the annexation of multi-to-multi, therefore SGSN 28 should select a MME/UPE 82b according to the load sharing principle, and to its transmission user's context configuration request message, asking this MME/UPE 82b is that subscriber equipment 10 generates the MM contexts.This message comprises, user's permanent identification, user position information, security information etc.
6) new MME/UPE 82b will self register the service node of subscriber equipment 10.
7) information of subscriber equipment 10 is with deleted in former MME/UPE 82a, and perhaps subscriber equipment 10 is flagged as not at this service area.
8) HSS 60 confirms that MME/UPE 82b succeeds in registration, and user signing contract information is transferred to MME/UPE 82b, and charging policy information is also transferred to MME/UPE 82b thereupon.
9) new MME/UPE 82b accepts the network attachment of subscriber equipment 10, and distributes a temporary identity to give subscriber equipment 10, and finishes to SGSN 28 affirmation user's context configurations.
10) after SGSN 28 receives user's context configuration response message, finish to subscriber equipment 10 affirmation registrations.
11) Inter AS Anchor 76 configuration of IP layers.User plane is set up between UPE-Inter ASAnchor, and uses default charging and strategy.
Pass through the above embodiment of the present invention, overcome the following shortcoming of the mobile management scheme under the idle pulley between existing different radio access style: under idle pulley, when subscriber equipment moves to the SAE/LTE connecting system from 2G/3G, a series of processes with the occurrence positions renewal, comprise the transfer of customer equipment context between the MME/UPE, MME registers to HSS, UPE does routing update etc. to Inter AS Anchor, therefore will cause the location management signaling traffic under a series of idle pulley.And because evolvement network networking initial stage E-UTRAN cell coverage area is less, roaming along with subscriber equipment, it frequently moves between E-UTRAN and UTRAN, GERAN, thereby causes system frequently to carry out the flow process that the position is upgraded, and has greatly increased the signaling traffic load under the idle pulley.The programme of lane place between the new different radio access style that the present invention proposes has effectively solved subscriber equipment frequent system that causes that moves between E-UTRAN and UTRAN, GERAN and has frequently carried out the problem that the position is upgraded.In addition, keep the actual residing network of subscriber equipment and the consistency of the network that keeps customer equipment context, effectively reduced the migration of customer equipment context.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (21)
1. a wireless communication system comprises first wireless network and second wireless network, it is characterized in that, described first wireless network is identical with the Location Area Identification that second wireless network is broadcast.
2. wireless communication system according to claim 1 is characterized in that, described second wireless network is the evolvement network of described first wireless network.
3. wireless communication system according to claim 1 is characterized in that, the coverage of described first wireless network and described second wireless network is overlapped at least.
4. wireless communication system according to claim 3 is characterized in that, described Location Area Identification is Routing Area Identifier or tracking area identification.
5. according to each described wireless communication system in the claim 1 to 4, it is characterized in that, comprise the information that is used to represent preferred network in the configuration information of at least one support node in the support node in the core net of support node in the core net of described first wireless network and described second wireless network.
6. wireless communication system according to claim 5 is characterized in that, describedly is used to represent that the information of preferred network is selected from the group that comprises following content: not preferred network, preferred first wireless network and preferred second wireless network.
7. wireless communication system according to claim 6, it is characterized in that, described system also comprises at least one portable terminal, when the described information that is used to represent preferred network is preferred first wireless network, the context of described portable terminal is retained in the core net of described first wireless network, when the described information that is used to represent preferred network was preferred second wireless network, the context of described portable terminal was retained in the core net of described second wireless network.
8. one kind is used for how internetwork motion management method, it is characterized in that, may further comprise the steps:
For many network's coverage areas are provided with identical Location Area Identification;
When portable terminal during at described many inter-network roamings, described portable terminal obtains described Location Area Identification, and does not initiate more new technological process of position.
9. motion management method according to claim 8 is characterized in that, described many networks comprise first wireless network and second wireless network, and described second wireless network is the evolvement network of described first wireless network.
10. motion management method according to claim 9 is characterized in that, overlaps at least in the overlay area of described first wireless network and described second wireless network.
11. motion management method according to claim 10, it is characterized in that, the Location Area Identification of described first wireless network is the Routing Area Identifier of this network's coverage area, and the Location Area Identification of described second wireless network directly is set to the Routing Area Identifier of described first wireless network.
12. according to each described motion management method in the claim 9 to 11, it is characterized in that described method also is included in the information that is provided for representing preferred network in the configuration information of at least one support node in the support node of described many servers net.
13. motion management method according to claim 12 is characterized in that, described method also comprises, according to the described information that is used to represent preferred network, the context of portable terminal is retained in first wireless network or second wireless network.
14. one kind is used for how internetwork motion management method, it is characterized in that, be provided for representing the information of preferred network in the configuration information of at least one support node in the support node in the core net of the support node in the core net of first wireless network and second wireless network.
15. motion management method according to claim 14 is characterized in that, describedly is used to represent that the information of preferred network is selected from the group that comprises following content: preferred network not; Preferred first wireless network, the context of described portable terminal are retained in the core net of first wireless network; And preferred second wireless network, the context of described portable terminal is retained in the core net of second wireless network.
16. motion management method according to claim 15, it is characterized in that, describedly be provided for representing that the step of the information of preferred network is by increasing a field in the configuration information in described support node, this field is 3 bits, and its value is corresponding to the network site of the contextual preferred preservation of portable terminal.
17. motion management method according to claim 15, it is characterized in that, if described second wireless network is a preferred network, then when portable terminal during from the 3rd wireless network roaming to described first wireless network, by the Location Area Identification that relatively issues by broadcast channel and the Location Area Identification of its preservation, the location area updating flow process is initiated in judgement, comprises following signaling process:
1) described portable terminal sends the register requirement that comprises former registration information first support node in the core net of described first wireless network;
2) the described first support node described former registration information that will receive sends to the former support node in the core net of described the 3rd wireless network, to obtain user profile;
3) described former support node sends user profile to described first support node;
4) described portable terminal carries out authentication by first support node;
5) described first support node is checked the described preferred network information of configuration in it and the access capability of described portable terminal, adjudicate described portable terminal and should reside in described second wireless network side, described first support node is selected a new support node in the core net of described second wireless network, and to its transmission user's context configuration request message, asking this new support node is that described portable terminal generates MM Context;
6) described new support node will self be registered the service node of described portable terminal;
7) at mobile-terminal text described in the described former support node with deleted, perhaps described portable terminal is flagged as not at its service area;
8) home subscriber server confirms that described new support node succeeds in registration, and user signing contract information is transferred to described new support node, and charging policy information is also transferred to described new support node thereupon;
9) described new support node is accepted the network attachment of described portable terminal, and distributes a temporary identity to give described portable terminal, and finishes to the configuration of described first support node affirmation user's context; And
10) after described first support node is received user's context configuration response message, finish to described portable terminal affirmation registration.
18 motion management methods according to claim 17, it is characterized in that, described signaling process 5) described first support node described in is selected the step of a new support node in the core net of described second wireless network, is to select in the support node in the route district that supports described portable terminal place.
19., it is characterized in that described second wireless network is the evolvement network of described first wireless network according to each described motion management method in the claim 14 to 17.
20. motion management method according to claim 19 is characterized in that, the coverage of described first wireless network and described second wireless network is overlapped at least.
21. motion management method according to claim 19 is characterized in that, the type of described the 3rd wireless network is identical with a kind of type in described first wireless network and described second wireless network.
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|---|---|---|---|
| CNA2006100592989A CN101035308A (en) | 2006-03-09 | 2006-03-09 | Radio communication system and mobility management method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2006100592989A CN101035308A (en) | 2006-03-09 | 2006-03-09 | Radio communication system and mobility management method |
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