CN101047948B - Stationed paging method for terminal at multi-radio access technology public overlay area - Google Patents

Abstract

This invention discloses a stationing method for terminals in multi-radio access technology public cover regions by determining a prior network in a public covery region of a radio access network and selecting a determined option network for stationing when the terminal moves to said public covery region. This invention also discloses a bp method for terminals at multi-radio access technology public covery region, in which, when a network side beeps a public covery region to the down-line of the terminal, it beeps in the prior network only, in this way, it can optimize network beep when multi-kind of different radio access technological systems coexist.

Description

Terminal is at being stationed of multi-radio access technology common footprint, paging method

Technical field

The present invention relates to communication technical field, be specifically related to a kind of terminal at being stationed of multi-radio access technology common footprint, paging method.

Background technology

In recent years, in the fast development of legacy cellular mobile communication technology, the part wireless access wide band technology also begins to provide the locomotive function of part.Under this background, the mobile communication industry has proposed the new market demand, requires further to improve 3G technology, and more powerful data service ability is provided, so that provide better service to the user, and is at war with other technologies.Therefore, 3GPP (third generation partnership project) has started the research work of 3G technology LTE (Long Term Evolution, Long Term Evolution), with the competitiveness that keeps 3G technology with in the leadership of moving communicating field.The purpose of LTE provides a kind of network cheaply that can reduce time delay, raising user data rate, improved power system capacity and covering.LTE only uses PS (packet switching) territory business, and bearer network is a full IP bearing.

On this basis by, derive a lot of new network architectures, wherein, a kind of popular framework as shown in Figure 1:

Wherein, LTE RAN is the wireless access network of evolvement network, comprise logical node eNode B (evolution base station), CPS (Control Plane Server, chain of command server), logically with it as LTE-RAN Entity (Long Term Evolution radio access network entity).ENode B has the physical layer and MAC (medium access control) layer of air protocol stack at least, and other protocol stack positions are indefinite, and adopt new physical-layer techniques (as orthogonal frequency division multiplex OFDM).CPS is used to finish the RRM of minizone eNode B, and bears part RRC (Radio Resource control) function.

EGSN (evolved GPRS Support Node) is GSN (the GPRS Support Node of evolution, GPRS Support Node), form by MME (Mobility Management Entity, Mobility Management Entity) and UPE (User Plane Entity, user entity).MME is used to manage and store MM (mobile management) context (as the mobility status of the sign of the UE of idle condition, UE, TA (Tracking Area, tracking area) information etc.) of UE, and the user is authenticated.UPE be used to the to terminate downlink data of UE of idle condition arrives UE as downlink data, triggers or initiates paging, preserves the context of UE simultaneously, as the IP address of UE and routing iinformation etc.

HSS (Home Subscriber Server, home subscriber server) is responsible for preserving user related information: user ID, numbering and addressing information; User security information: network insertions such as authentication and authentication control; Customer position information; User's master data information.

User Plane anchor (user's face anchor point) is a user entity of supporting that UE moves between different access systems, supports the switching between different access systems, remains unchanged during user's session.

Distinguish from logic function, eGSN is separated into MME and UPE.But from physical node, each logic entity has multiple compound mode, merges into a physical node as CPS and MME, UPE, and eNodeB is a physical node; Or eNode B and CPS merge into a physical node, and MME, UPE merge into physical node or the like.

At many RAT (Radio Access Technology, wireless access technology) in the network, because UE is between different RAT (as network and the evolvement network of 2G/3G) when mobile, can change quartering at different networks and rattle and cause network registration process, and frequent network registration process can cause great waste to interface-free resources.

As shown in Figure 2, RA1 and RA2 are the route district (Routing Area) of existing 2G/3G, and RA of the every replacing of the UE of existing 2G/3G will initiate RAU (Routing Area Update, Routing Area Update) process.Certainly UE also has periodic position updating process under the situation of not changing RA, and its effect is to make network understand UE at present also at network, prevent the UE deviated from network and network is not understood and constantly the situation of paging UE take place.

TA1, TA2, TA3, TA4 are the tracking areas (Tracking Area) of evolvement network.Like this when the UE of a bimodulus or multimode regional when mobile at these; if there is not certain mechanism; can cause frequent network registration process; need register to the SGSN of 2G/3G (service universal grouping wireless business supporting node) when entering RA1 as UE; when entering TA1, UE then needs registration again to the MME/UPE of evolvement network; when UE shifts out TA1 and enters RA1, again to the SGSN of 2G/3G registration.The purpose of registration is to make network paging to arrive UE in certain RAT, but can bring a large amount of register command expenses simultaneously again.

Limitation signaling proposes for addressing this problem between RAT, and its thinking is that UE is registered to 2G/3G network and evolvement network simultaneously, and UE just need not initiate any registration process when the registration area of these several networks moves like this.Be registered to the RA1 of 2G/3G and the TA1/TA2 of evolvement network as UE, the SGSN of 2G/3G and the MME/UPE of evolvement network go up the context that UE is just arranged, MME/UPE has write down UE may be in the zone at evolvement network place, SGSN has write down UE may be in the zone at 2G/3G place, like this when paging arrives, MME and SGSN send out paging at the paging domain of self, have guaranteed that UE can paged arriving.UE just need not initiate registration process when mobile again between RA1 and TA1/TA2 like this, has saved signaling consumption.

Though the mode of limitation signaling has been saved signaling consumption between existing RAT, has also increased the paging amount simultaneously, because UE can carry out paging at all RAT registration areas.In addition, in the several method of existing limitation signaling, all do not mention the be stationed situation of UE in common footprint.

Summary of the invention

The purpose of this invention is to provide the accessing method of a kind of terminal in the multi-radio access technology common footprint, so that network is when paging, carry out paging at the network that common footprint is stationed according to UE and not be used in paging under other wireless access technologys in this zone, reduce the paging amount of UE when common footprint, and then save Internet resources.

Another object of the present invention provides the paging method of a kind of terminal in the multi-radio access technology common footprint, to overcome the big shortcoming of paging amount that the method for limitation signaling is brought in the prior art, ICQ during to multiple different RAT (wireless access technology) coexistence of systems is optimized, when not increasing the network registry update times, further reduce the paging amount, effectively save Internet resources.

For this reason, the invention provides following technical scheme:

A kind of terminal is at the accessing method of multi-radio access technology common footprint, and described method comprises:

Under limitation signaling mode between RAT, determine the interior preferred network of common footprint of Radio Access Network;

After terminal moved to described common footprint, the preferred network of selecting to determine was stationed.

Alternatively, the step of the preferred network in the common footprint of described definite Radio Access Network comprises:

The network-order of preferentially being stationed by the network side configurating terminal also is handed down to terminal with it by broadcasting;

Terminal is determined the preferred network that should be stationed according to broadcast of receiving and the access capability of oneself.

Alternatively, terminal is determined the interior preferred network of common footprint of Radio Access Network according to the access capability of oneself.

Terminal reports network side with the preferred network of oneself determining when registration.

Alternatively, network side and terminal consult to determine the interior preferred network of common footprint of Radio Access Network.

A kind of terminal is at the paging method of multi-radio access technology common footprint, and described method comprises step:

Under limitation signaling mode between RAT, the terminal of idle condition is stationed preferred network when the common footprint of Radio Access Network;

When network side has the descending paging of described terminal to common footprint, only carry out paging at described preferred network.

Each of network side layer logic entity obtains the access capability and the preferred network of this terminal according to network configuration and/or reporting information by terminal.

When certain node control zone of a Radio Access Network is in fully that other wireless access technologys cover down and during for the not preferred network of described terminal, the zone that this Radio Access Network is covered is as the paging zone of exempting from of this terminal;

When paging indication or data arrived the not preferred network of described terminal, the logic entity in this network judged according to the access capability and the preferred network of this terminal whether the logic entity of its lower floor that wants paging all is in the paging zone of exempting from of described terminal;

If, the then paging of mailing to the lower floor's logic entity of exempting from paging zone that is in described terminal fully in this layer logic entity termination;

If not, then give not exclusively to belong to described lower floor's logic entity of exempting from paging zone by this layer logic entity distributing paging.

Logic entity in the described network is respectively to low layer by high level in the network of 2G/3G: GPRS serving GPRS support node SGSN, radio network controller (RNC), base station.

The terminal of described idle condition shows as the terminal of the idle PMM_IDLE state that is in the grouping mobile management or is in the terminal of Universal Terrestrial Radio Access Network UTRAN Acceditation Area paging channel URA_PCH state in 2G/3G.

Alternatively, when the network of 2G/3G was not preferred network, the terminal of URA_PCH state kept quartering at the 2G/3G network, keeps the URA_PCH state.

GPRS serving GPRS support node SGSN checks SOT state of termination after receiving data or paging indication;

If described terminal is in the PMM_IDLE state, when then common footprint is arrived in the descending paging of described terminal, only carry out paging at preferred network;

Otherwise, carry out paging at all registration areas of the described terminal that comprises common footprint.

By above technical scheme provided by the invention as can be seen, the present invention makes the terminal of idle condition be stationed preferred network when the common footprint of Radio Access Network, like this, when network side has the descending paging of this terminal to common footprint, just can carry out paging at its preferred network of being stationed.Thereby when not increasing the network registry update times, reduced the paging amount effectively, saved Internet resources greatly.

Description of drawings

Fig. 1 is a kind of 3G evolution network framework schematic diagram;

Fig. 2 is many RAT schematic network structure;

Fig. 3 is the realization flow of terminal of the present invention at the accessing method of evolvement network common footprint;

Fig. 4 is the realization flow of terminal of the present invention at the paging method of evolvement network common footprint;

Fig. 5 uses the inventive method is carried out paging in many RAT a example;

Fig. 6 uses the inventive method is carried out paging in many RAT another example;

Fig. 7 is 2G/3G network and the evolvement network structural representation when overlapping;

Fig. 8 is whole structural representations when overlapping one of in 2G/3G network and the evolvement network;

Fig. 9 is a not preferred ICQ level schematic diagram in the inventive method;

Figure 10 is the network architecture of Packet Data Bearer Proxy in the prior art;

Figure 11 is the flow process of Packet Data Bearer Proxy in the prior art;

Figure 12 is the flow process of Packet Data Bearer Proxy in the inventive method.

Embodiment

In the present invention, in common footprint, network and terminal need be understood oneself and want preferred network, in Fig. 2, and the zone that TA1/TA2 and RA1 have public covering and both to cover, the i.e. zone of TA1 and TA2 covering.If terminal can be stationed by preferred a kind of network, simultaneously network can be understood RAT that terminal supports and at the preferred network of common footprint, terminal enters this common footprint territory and quarters on the preferred network of terminal so, network is when paging, carry out paging according to preferred network and not be used in that paging gets final product under other RAT in this zone in common footprint, the zone of other non-overlapped coverings according to normal paging paging just can paging to this terminal.

In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.

With reference to Fig. 3, Fig. 3 is the realization flow of terminal of the present invention at the accessing method of evolvement network common footprint:

At first, in step 301, determine the interior preferred network of common footprint of Radio Access Network.

In realization, multiple mode can be arranged.Such as:

(1) by network configuration: the network-order that the network side configurating terminal preferentially is stationed also is handed down to terminal with it by broadcasting, and terminal is according to broadcast of receiving and own access capability, the definite preferred network that should be stationed.Because terminal the time can report oneself access capability in registration, therefore, network side and terminal all know terminal in common footprint the network preferred sequence and the access capability of terminal.Thereby can guarantee that network side and terminal determine unique preferred network.

(2) determine preferred network in the common footprint of Radio Access Network according to own access capability by terminal, and when registration, the preferred network that oneself is definite reports network side.That is to say that terminal not only reports the access capability of oneself to network side when registration, also report the preferred network of oneself determining simultaneously.

(3) network side and terminal consult to determine the interior preferred network of common footprint of Radio Access Network.

Then, in step 302, after terminal moved to described common footprint, the preferred network of selecting to determine was stationed.

The process that terminal forwards preferred RAT to has following several scene:

1. terminal is measured neighboring BS information before entering the common footprint territory, promptly transfers on the preferred RAT after entering common footprint.

2. terminal still quarters on original RAT after entering common footprint, listens to the preference lists of RAT in the broadcast of this RAT, selects preferred RAT to be stationed according to the RAT ability of oneself supporting.

Below by the be stationed process of the definite and terminal that preferred network among the present invention is described in further detail for example in the common footprint territory.

Such as, there is the network of three kinds of access technologies in certain common footprint territory, is respectively RAT1, RAT2, RAT3.And the access capability of terminal is RAT1 and RAT3.Network can be notified terminal in proper order with the own preferred network that disposes or preferred network is configured according to its access capability by terminal oneself by broadcasting.Suppose that it is RAT2, RAT1, RAT3 that network side requires the network preferred sequence of this common footprint, and should order notify terminal by broadcast.After terminal is received this message, determine that according to the access capability of oneself its preferred network is RAT1 (because self not supporting RAT2), and finally quarter at RAT1.Because network is understood this regional RAT preferred sequence and the access capability of terminal, thereby knows that also this terminal can quarter among the RAT1.Like this, when this terminal of needs paging, just can only carry out paging, and not be used in RAT2 and RAT3 paging, although this terminal may also be registered at the RAT3 network at this regional RAT1.As seen, this mode of being stationed provides possibility for the paging amount of saving in this common footprint.

With reference to Fig. 4, Fig. 4 is the realization flow of terminal of the present invention at the paging method of evolvement network common footprint:

At first, in step 401: the terminal of idle condition is stationed preferred network when the common footprint of Radio Access Network.

The process of being stationed that reaches terminal of determining of preferred network has a detailed description in front, does not repeat them here.

Then, in step 402: when network side has descending paging to described terminal to common footprint, only carry out paging at described preferred network.

The present technique field personnel know, in order to prevent terminal between the different radio access network when mobile, quarters at different networks and cause frequent network registration process owing to change, and can adopt the mode of limitation signaling.As shown in Figure 5, if the Acceditation Area of terminal (is the zone of terminal registration in network, in this zone when mobile, terminal needn't be initiated network registration/renewal process) be RA1/TA1/TA2/TA4, this terminal moves in these zones and need not initiate the registration process so, thereby has saved the registration signaling, but what bring thus is the increase of paging amount, because network side does not know which RAT is terminal quarter among, need in the all-network in the common footprint territory, carry out paging.

And use the present invention, if evolvement network is a preferred network, in the zone of public covering, the 2G/3G network just need not be at these area pagings so, evolvement network need be at all area pagings.Like this, if terminal is in common footprint, then preferably evolvement network is stationed, and like this, only needs just can paging arrive this terminal in the evolvement network paging, thereby has saved the paging amount at these areas of coverage at 2G/3G.

Many RAT network configuration shown in Figure 6 for another example:

In this example, terminal is supported three kinds of access technology RAT1, RAT2, RAT3, and preferred sequence is RAT3, RAT2, RAT1, and the overlay area as shown in FIG..When carrying out paging so, have only preferred RAT that terminal is carried out paging in common footprint.

This shows, use the present invention only need save a large amount of call signalings in common footprint paging in a kind of RAT.Terminal is selected preferred RAT according to the access capability of oneself and the RAT covering and the preferred sequence of network.As at the P1 point, network has only RAT1/RAT2 to cover, and terminal can preferably be stationed RAT2, and the P2 point has three kinds of coverings, and terminal can preferably quarter at RAT3.If certainly terminal has only the access capability of RAT2 and RAT1, it can preferably quarter at RAT2 at the P2 point so, the paging in P2 zone will be only paging in RAT2.

In actual applications, owing to network planning reason and base station covering problem, can not reach fully has a plurality of RAT pagings simultaneously in a common footprint territory.Support RAT1 as base station 1, RAT2 is supported in base station 2, and they have certain public cover part, carry out certain RAT paging but only can not control separately in this public part, in this case, also can carry out paging at RAT1 and RAT2 simultaneously.

As shown in Figure 7,2G/3G network and evolvement network have common footprint, if evolvement network is a dominant area, 2G/3G is non-dominant area, but because the control ability of radio signal propagation, the Node B (base station) of 2G/3G is uncontrollable not to go to this overlapping region of paging, and Node B also wants the non-overlapped zone of paging, at this moment, also can connect overlapping areas paging together.

But,, as shown in Figure 8, in this case, just can utilize method of the present invention to carry out calling optimization if the Node B of 2G/3G or certain sub-district or whole RAN (Radio Access Network) or whole SGSN are under other RAT fully.2G/3G Node B among the figure is distributing paging (or radio network controller (RNC) do not give Node B distributing paging) not just.

Based on above-mentioned many RAT network configuration, promptly this common footprint of definable is the paging zone of exempting from of terminal.That is to say, when the zone of certain node control of a Radio Access Network is under other wireless access technologys and during for the not preferred network of described terminal fully, with the zone of the covering of this this node control of Radio Access Network the paging zone of exempting from as this terminal.

Like this, under the not preferred network of a paging indication or data incoming terminal, just can whether all be in and exempt from paging zone and paging is optimized according to each layer logic entity in this not preferred network.

At first, for make each layer logic entity in the network (such as, SGSN/eSGSN, RNC, NodeB/eNode B etc.) can both understand whether the common footprint territory is arranged, need in each layer interface, transmit the access capability and the list of preferred networks information of terminal.The front has been described in detail when terminal enters common footprint and will have been selected preferred network to be stationed, and preferred network determine to have multiple mode, determine according to the access capability of oneself by the network side configuration or by terminal no matter be, in a word, these informational needs pass to each layer logic entity of network side by interface, can both understand terminal with the logic entity that guarantees different stage and whether be in common footprint.

Like this, above-mentioned prerequisite has been arranged, just can the paging in the not preferred network be optimized, reduced unnecessary call signaling.Specific practice is: when the not preferred network of paging indication or data incoming terminal, whether the logic entity that the logic entity in this network is successively judged its lower floor that wants paging according to the access capability and the preferred network of this terminal all is in the paging zone of exempting from of this terminal.If, then, that is to say in this paging that terminates of this layer logic entity, stop distributing paging and give and belong to described lower floor's logic entity of exempting from paging zone entirely.If not, then give not exclusively to belong to described lower floor's logic entity of exempting from paging zone by this layer logic entity distributing paging.

Reference not preferred ICQ level shown in Figure 9:

Under the not preferred network of a paging indication or data incoming terminal, SGSN judges according to information such as configurations whether the RA want paging all is in the paging zone of exempting from of terminal because might one RA be in common footprint and present networks is not preferred network.If SGSN just can stop distributing paging to the RNC that belongs to common footprint entirely so, i.e. paging request terminates at SGSN; Otherwise SGSN is to the following RNC distributing paging that not exclusively belongs to common footprint.RNC judges according to information such as network configuration whether the Node B that wants paging is in the paging zone of exempting from of this terminal, if, then not to these Node B distributing pagings; Otherwise, continue distributing paging.Node B can judge also whether each sub-district of its subordinate is to exempt from paging zone.Even the entity that paging indication is sent can judge whether that also zone whole under this SGSN all is to exempt from paging zone, if then can not send data or paging indication to this SGSN.

More than just with the 2G/3G network for example, the present invention does not limit other RAT to use said method successively to judge, can no longer judge whether no longer to send paging at certain below the layer according to network configuration certainly yet.

The present technique field personnel know, at present one of task of evolvement network be to avoid and 2G/3G between frequent registration process.Use the inventive method, can reduce the paging amount of common footprint effectively.But, at present in limitation signaling (promptly avoid and 2G/3G between frequent registration process) problem, also regard the URA_PCH (Universal Terrestrial Radio Access Network UTRAN Acceditation Area paging channel) of 2G/3G as idle (free time) state, if like this for calling optimization, the terminal that is in PCH (paging channel) state of UTRAN need transfer LTE-IDLE (free time of Long Term Evolution) state to when entering common footprint (if evolvement network is a preferred network), but it is slow to make that like this LTE-IDLE transfers Active (activation) state to.

Therefore, except preferably be stationed (is preferred network such as the hypothesis evolvement network) and paging according to the inventive method, can also make the terminal maintenance of PCH state quarter at UTRAN and not want preferred evolvement network.Like this, just need the registration process of the terminal of restricted information be made certain improvements, in common footprint, even evolvement network is a preferred network, still make the terminal of PCH state quarter at UTRAN (Universal Terrestrial Radio Access Network) network, to guarantee the speed of this accessing terminal to network.

Be that example is elaborated with one of the method for limitation signaling Packet Data Bearer Proxy (packet data bearers agency) below.

In order to understand the present invention better, at first Packet Data Bearer Proxy in the prior art is simply introduced.

With reference to Figure 10, the figure shows the Packet Data Bearer Proxy network architecture:

Packet Data Bearer Proxy mechanism is based on this figure network architecture.Endpoint registration is received TMSI (temporarily moved subscriber identification) and RA (wireless access) from SGSN to SGSN.Terminal is set up a packet data bearers, and UPE is on this data paths.Keep the TMSI and the RA that obtain from SGSN to the registration of MME subsequently, and MME distributes other TMSI and RA to give this terminal.This terminal keeps being registered in SGSN.After being registered to MME, this terminal may 2G/3G insert and EvolvedRAN (evolution wireless access network) between change and need not any register command.

The upstream data of UE may send to 2G/3G SGSN or give MME/UPE.Downlink data duplicates and copy data is transmitted to 2G/3G SGSN at MME/UPE.Like this, SGSN and MME/UPE just can begin paging.Data are sent by the entity that receives page response.

The detailed process of Packet Data Bearer Proxy is as shown in figure 11:

1.UE the registration of carrying out MME/UPE first can not saved the signaling of idle condition;

2.UE be registered to the SGSN of 2G/3G network;

3. after the success identity, SGSN accepts the registration of this UE;

4. if the carrying of not set up, the IP bearer service of acquiescence is set up in the UE request, is set up to MME/UPE by SGSN.MME/UPE sets up the packet bearer business to inter AS MM (mobile management between connecting system) entity.Last MME/UPE just is in the data road of the packet bearer business that SGSN provides through last;

5.UE change to the RAN of evolution;

6.UE send register requirement to MME/UPE, and send old TMSI and old RA;

7.MME/UPE from SGSN request user data, the address of SGSN obtains from old TMSI/RA;

8.MME/UPE confirm registration and distribute new TMSI/RA to give UE, MME/UPE sends old TMS/RA to UE simultaneously, 2G/3G SGSN keeps login state at HSS (home subscriber server), and UE can change between 2G/3G and evolution Access Network and need not initiate network registry;

9. downlink data arrives MME/UPE;

10.MME/UPE the data of storage are also transmitted copy data and are given SGSN;

11.SGSN paging UE in the RA of 2G/3G wireless access network;

12.MME/UPE paging UE in the RA of evolution wireless access network;

If UE responds SGSN, then SGSN sends data to UE; If UE responds MME/UPE, then send data to UE by MME/UPE.

By this flow process as seen, terminal is initially located in the 2G/3G network, and is registered to SGSN.When it moves to evolvement network, be registered to MME/UPE again, but it still keeps being registered in SGSN, when this terminal changes, just need not initiate network registry more like this between the registration area of 2G/3G and evolution Access Network.

The present invention remains under the UTRAN in the terminal of PCH state in order to guarantee, to the handling process of Packet DataBearer Proxy as shown in figure 12:

As seen from Figure 12, difference with the prior art of the present invention is for the 11st and the 11st ' step:

The 11st step: if UE is in PMM_IDLE (Packet Mobility Management-idle, the idle condition of grouping mobile management) state, the RNC that not exclusively by preferred network covered of distributing paging under the Acceditation Area of SGSN then, UE is in the PMM_CONNECTED state else if, distributing paging paging in all Acceditation Areas of UE;

The 12nd step: the paging if SGSN has terminated, SGSN sends the paging indication to MME/UPE, the notice MME/UPE paging that terminated.

That is to say, be in the PMM_IDLE state if SGSN judges UE, and SGSN is in common footprint fully, the SGSN descending paging that can terminate so sends its descending paging that terminated of paging indication notice MME/UPE by SGSN to MME/UPE.

Because SGSN has write down the contextual information of UE, can understand the state of UE, also just can understand UE and whether be in the PMM_IDLE state.If the method described according to prior figures 9 of SGSN is carried out paging to being in non-zone of exempting from paging zone so, to being in the zone distributing paging not then of exempting from paging zone, to save signaling.Be in PMM_CONNECTED state (the PCH state also belongs to this state) if learn terminal, then the Acceditation Area in this terminal all carries out paging to it, thereby the UE that is in the PCH state and still quarters at the UTRAN network still can pagedly be arrived in common footprint, guarantee the speed of its access network.

With Packet Data Bearer Proxy the method for limitation signaling is described in detail above, but the present invention is not limited in the mode of this limitation signaling, is equally applicable to the scheme of other limitation signalings, is described no longer one by one at this.

Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wish that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.

Claims (12)

1. a terminal is characterized in that at the accessing method of multi-radio access technology common footprint described method comprises:

Under limitation signaling mode between wireless access technology RAT, determine the interior preferred network of common footprint of Radio Access Network;

After terminal moved to described common footprint, the preferred network of selecting to determine was stationed.

2. method according to claim 1 is characterized in that, the step of the preferred network in the common footprint of described definite Radio Access Network comprises:

The network-order of preferentially being stationed by the network side configurating terminal also is handed down to terminal with it by broadcasting;

Terminal is determined the preferred network that should be stationed according to broadcast of receiving and the access capability of oneself.

3. method according to claim 1 is characterized in that,

Terminal is determined the interior preferred network of common footprint of Radio Access Network according to the access capability of oneself.

4. method according to claim 3 is characterized in that, described method further comprises:

Terminal reports network side with the preferred network of oneself determining when registration.

5. method according to claim 1 is characterized in that, the step of the preferred network in the common footprint of described definite Radio Access Network comprises:

Network side and terminal consult to determine the interior preferred network of common footprint of Radio Access Network.

6. a terminal is characterized in that at the paging method of multi-radio access technology common footprint described method comprises step:

Under limitation signaling mode between wireless access technology RAT, the terminal of idle condition is stationed preferred network when the common footprint of Radio Access Network;

When network side has the descending paging of described terminal to common footprint, only carry out paging at described preferred network.

7. method according to claim 6 is characterized in that, described method further comprises:

Each of network side layer logic entity obtains the access capability and the preferred network of this terminal according to network configuration and/or reporting information by terminal.

8. method according to claim 7 is characterized in that, described method further comprises:

When certain node control zone of a Radio Access Network is in fully that other wireless access technologys cover down and during for the not preferred network of described terminal, the zone that this Radio Access Network is covered is as the paging zone of exempting from of this terminal;

When paging indication or data arrived the not preferred network of described terminal, the logic entity in this network judged according to the access capability and the preferred network of this terminal whether the logic entity of its lower floor that wants paging all is in the paging zone of exempting from of described terminal;

If, the then paging of mailing to the lower floor's logic entity of exempting from paging zone that is in described terminal fully in this layer logic entity termination;

If not, then give not exclusively to belong to described lower floor's logic entity of exempting from paging zone by this layer logic entity distributing paging.

9. method according to claim 7 is characterized in that, the logic entity in the described network is respectively to low layer by high level in the network of 2G/3G: GPRS serving GPRS support node SGSN, radio network controller (RNC), base station.

10. method according to claim 6 is characterized in that,

The terminal of described idle condition shows as the terminal of the idle PMM_IDLE state that is in the grouping mobile management or is in the terminal of Universal Terrestrial Radio Access Network UTRAN Acceditation Area paging channel URA_PCH state in 2G/3G.

11. method according to claim 6 is characterized in that, described method further comprises:

When the network of 2G/3G was not preferred network, the terminal of URA_PCH state kept quartering at the 2G/3G network, keeps the URA_PCH state.

12. method according to claim 11 is characterized in that, described method further comprises:

GPRS serving GPRS support node SGSN checks SOT state of termination after receiving data or paging indication;

If described terminal is in the PMM_IDLE state, when then common footprint is arrived in the descending paging of described terminal, only carry out paging at preferred network;

Otherwise, carry out paging at all registration areas of the described terminal that comprises common footprint.

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