CN1852590A

CN1852590A - Link converting method in communication system

Info

Publication number: CN1852590A
Application number: CNA2005101183180A
Authority: CN
Inventors: 姜海涛; 汪洪源
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2005-10-28
Filing date: 2005-10-28
Publication date: 2006-10-25
Anticipated expiration: 2025-10-28
Also published as: WO2007048355A1; CN100569021C

Abstract

Characters of the method are that in procedure for switching links, after collecting complete message of link conversion, UE selects switching time, and carries out switching between new and old links at the switching time; meanwhile, using old link sends link message of UE to network side; based on message reported from UE network side switches new and old links at network side. The invention guarantees uninterrupted link, and improves jointing time delay of switching links.

Description

Link converting method in a kind of communication system

Technical field

The present invention relates to the link connection switch technology of communication system, relate in particular to a kind of link converting method that in communication system, shortens the time delay that continues.

Background technology

The time delay that continues is that Wideband Code Division Multiple Access (WCDMA) inserts major issue in (WCDMA) system, and the long meeting of the time delay that continues directly influences user's subjective feeling, influences the loyalty of user to the WCDMA Operation Network.Link establishment in the handshaking procedure is divided into synchronous foundation, the asynchronous dual mode of setting up.Setting up synchronously is in setting up process, and radio network controller (RNC) informing base station (NodeB) and user terminal (UE) are gone up in the change-over time of an appointment (CFN) and be transformed into new link from old link.Asynchronous foundation is that RNC is respectively NodeB and UE sets up link, but does not guarantee that new link comes into force in time simultaneously.

Setting up in the process synchronously, needing the designated conversion time in advance, i.e. activationary time (Activationtime) can be set up message eating dishes without rice or wine also can receive in wrong for guaranteeing UE in the transition period.

Existingly set up synchronized reconfiguration Radio Link between process need SRNC, NodeB and the UE synchronously.Synchronizing process is as follows:

The first, NodeB is after receiving the reconfiguring radio link message that SRNC issues, can not enable new configuration parameter immediately, promptly carry out the conversion of new old link, but be ready to corresponding radio resource, wait receives reshuffling execution message, the change-over time of obtaining the SRNC regulation from message that SRNC issues.Herein, described new old link also refers to such an extent that be new and old channel.

The second, UE can not enable new configuration parameter immediately after receiving the configuration messages that SRNC issues, but obtains from message the change-over time of SRNC regulation.

Three, in the change-over time of SRNC regulation, NodeB and UE enable new configuration parameter simultaneously, carry out the conversion of new old link.

Fig. 1 is the existing signaling process figure that sets up RAB synchronously.Referring to Fig. 1, this synchronizing process comprises:

1) CN wireless access network (UTRAN) transmission landwards RAB assignment request message RABASSIGNMENT REQUEST initiates RAB and sets up process.

2) after SRNC receives the RAB request of setting up, the qos parameter of RAB is mapped as AAL2 link characteristic parameters and Radio Resource characterisitic parameter, the ALCAP of Iu interface sets up process according to user's face transmission bearer of wherein AAL2 link characteristic parameters initiation Iu interface.

3) SRNC sends radio link reconfiguration to the NodeB that is controlled and prepares message RADIO LINKRECONFIGURATION PREPARE, and the NodeB that request is controlled prepares to increase by the dedicated transmissions link (DCH) of one (or many) carrying RAB on existing Radio Link.

4) NodeB distributes corresponding resource, sends radio link reconfiguration to affiliated SRNC then and is ready to complete message RADIO LINK RECONFIGURATION READY, and notice SRNC radio link reconfiguration is ready to complete, and promptly new link configuration is finished.

5) user's face transmission bearer of the ALCAP of Iub interface initiation Iub interface is set up process among the SRNC.NodeB and SRNC set up synchronously by the up-downgoing synchronization frame of exchange DCH Frame Protocol.

6) SRNC sets up message RADIO BEARERSETUP to the radio bearer that UE sends the RRC agreement, comprising default change-over time.

7) SRNC wherein also comprises default change-over time to the NodeB transmission radio link reconfiguration execution message RADIO LINKRECONFIGURATION COMMIT that is controlled.

8) after UE execution RB sets up, after arriving change-over time, carry out the conversion of new and old link, and on new link, finish message RADIO BEARER SETUPCOMPLETE to the foundation of SRNC transmission radio bearer.

9) SRNC receives after radio bearer sets up the message finish, and responds RAB assignment response message RAB ASSIGNMENT RESPONSE to CN, finishes RAB and sets up flow process.

But there is following shortcoming in above-mentioned prior art:

In the scene of piece by mistake of eating dishes without rice or wine not, link transfer process in the synchronized reconfiguration does not need very long yet complete connection smoothly, but network side is to prevent mistake piece link call drop high the time, the change-over time of being reserved is long, cause eating dishes without rice or wine not by mistake in the scene of piece, the time delay that continues of its link conversion is also very long.

Summary of the invention

In view of this, main purpose of the present invention is to provide the link converting method in a kind of communication system, to guarantee when link does not fall, improves the time delay that continues of link conversion.

In order to realize the foregoing invention purpose, main technical schemes of the present invention is:

Link converting method in a kind of communication system, in the process of link conversion, communications user terminal UE is after collecting the link transforming message, select to carry out at short notice the conversion of new old link, by the link information of old link to network side transmission UE, network side carries out the conversion of the new old link of network side according to the information that UE reports simultaneously.

This method further comprises: set in advance at least two change-over times; Described UE selects change-over time, and at the concrete grammar that carry out the conversion of new old link this change-over time be: the moment that UE is collected the link transforming message adds that the conversion of UE prepares time delay and obtain one first reference time, and from default change-over time, select one be in after this first reference time and the shortest change-over time as the actual converted time, UE changes new old link in this actual converted time.Described conversion is prepared time delay and is arranged on the UE, and its acquisition methods is existing known technology.

Described UE by old link to the link information of the UE of network side transmission is: the selected actual converted of the UE time; The detailed process that the information that described network side reports according to UE is carried out the conversion of the new old link of network side is: the via node of the Control Node informing network side of network side carries out the conversion of new old link according to the described actual converted time.

Described UE by old link to the link information of the UE of network side transmission is: the link transition response message that UE returns to network side; The detailed process that the information that described network side reports according to UE is carried out the conversion of the new old link of network side is: the moment that the Control Node of network side will collect described link transition response message adds that the conversion preparation time delay of network side obtains one second reference time, from default change-over time, select one be in after this second reference time and the shortest change-over time as actual converted time of network side, and the via node of informing network side is changed new old link in the actual converted time of this network side; If network side is not in the end still received the link transition response message that UE returns on a set change-over time, UTRAN is chosen in and goes up the new old link of conversion last set change-over time so.

This method further comprises: UE before the time, constantly retransmits the link information of UE in actual converted to network side.

This method further comprises: if the via node of network side is still being kept old link after change-over time, and if this via node detects the signal less than UE, then send the Control Node of the message informing network side of putting the step-out type change-over time, after the Control Node of network side is received this message, use new link at once.

This method further comprises: set in advance at least two change-over times and a minimum treat time delay; Described UE selects change-over time, and at the concrete grammar that carry out the conversion of new old link this change-over time be: the moment that UE is collected the link transforming message adds the above minimum treat time delay and obtains a reference time, and from default change-over time, select one be in after this reference time and the shortest change-over time as the actual converted time, UE changes new old link in this actual converted time; Described UE by old link to the link information of the UE of network side transmission is: the selected actual converted of the UE time; The detailed process that the information that described network side reports according to UE is carried out the conversion of the new old link of network side is: the via node of the Control Node informing network side of network side carries out the conversion of new old link according to the described actual converted time.

Described UE by the concrete mode of old link to the selected actual converted of the UE time that network side sends is: send to network side by carry the described actual converted time in the link transition response message that network side returns at UE; Perhaps carry the message of this actual converted time and send to network side by special being used to.

Described minimum treat time delay is that time delay is prepared in the conversion of the maximum of following two time delays: UE; UE prepares the time delay sum to the up link time delay of network side and the conversion of network side.

Time delay is prepared in the conversion of described network side: if the words of Control Node and via node parallel processing: then get the processing delay that new old link conversion is carried out in max{ Control Node inside, (Control Node is to the processing delay of via node propagation delay time+via node) }; If Control Node and via node serial process: then get the processing delay of Control Node), Control Node is to the propagation delay time of via node and the processing delay sum of via node.

Be two the described change-over time that sets in advance.

Described UE and network side adopt the cycle timing; Described UE selects change-over time, and at the concrete grammar that carry out the conversion of new old link this change-over time be: network side sets in advance and is handed down to UE short change-over time, UE is chosen in the described default conversion of carrying out new old link change-over time after collecting the link transforming message; Described UE by old link to the link information of the UE of network side transmission is: the link transition response message that UE returns to network side; The detailed process that the information that described network side reports according to UE is carried out the conversion of the new old link of network side is: the Control Node of A, network side is with the change-over time of default change-over time as reality; B, Control Node judge whether to receive the link transition response message that UE reports before the change-over time of described reality, if then the via node of informing network side carries out new old link conversion in this actual change-over time; Otherwise, postponed a time-count cycle change-over time of reality, and return step B.

The cycle of described UE and network side timing is 2.56 seconds.

Described in the process of link conversion, network side be new link up selection different with old link around sign indicating number, in the link code of descending selection with the different code trees of old link.

Described UE selects change-over time, and in the concrete mode that carry out the conversion of new old link this change-over time be: the Control Node of network side sets in advance change-over time and is handed down to UE, be set to change immediately or be set to the existing relatively short time of change-over time this change-over time, UE carries out the conversion of new old link according to described change-over time after collecting the link transforming message; Described UE by old link to the link information of the UE of network side transmission is: UE converts message to the link that network side returns; The detailed process that the information that described network side reports according to UE is carried out the conversion of the new old link of network side is: the Control Node of network side converts message and knows that UE has collected the link transforming message by receiving described link, and the via node of informing network side is according to the described default conversion of carrying out the new old link of network side change-over time.

Described UE just carries out the conversion of new old link immediately according to described change-over time after collecting the link transforming message.

This method further comprises: the Control Node of network side sends response message to UE receiving after link converts message; Described UE carries out the conversion of new old link again according to described change-over time after receiving this response message.

This method further comprises: set in advance the conversion offset delay; Described UE selects change-over time, and be: after UE is collecting the link transforming message in the concrete mode that carry out the conversion of new old link this change-over time, the change-over time that time delay is determined an agreement is prepared in conversion according to the described conversion offset delay that sets in advance and self, and according to the conversion of carrying out new old link change-over time of this agreement; Described UE by old link to the link information of the UE of network side transmission is: the change-over time of described agreement; The detailed process that the information that described network side reports according to UE is carried out the conversion of the new old link of network side is: after the Control Node of network side received the change-over time of described agreement, the via node of informing network side was according to the conversion of carrying out the new old link of network side change-over time of this agreement.

Described conversion offset delay is: UE to the processing delay of the Control Node of the up link time delay of network side, network side, Control Node to the propagation delay time of network side via node and the processing delay sum of via node.

Described UE by old link to the change-over time that network side returns agreement is: by sending to network side the change-over time of carrying described agreement at UE in the link transition response message that network side returns; Perhaps carry the message of the change-over time of this agreement and send to network side by special being used to.

This method further comprises: also be handed down to UE default change-over time at the latest of network side, and the Control Node of network side sends response message to UE after receiving the change-over time of agreement; UE further judges whether the response message of receiving that described Control Node is returned when arrive in the change-over time of described agreement, if then carry out new old link conversion in the change-over time of this agreement; Otherwise, carry out new old link conversion in predetermined change-over time at the latest.

This method further comprises: described Control Node judges whether agreement change-over time of receiving that UE returns when arrive change-over time at the latest predetermined, if then notify described via node to carry out the conversion of new old link change-over time according to this agreement; Otherwise the notice via node is in the described predetermined conversion of carrying out new old link change-over time at the latest.

Described conversion offset delay is arranged on network side or UE side.

Described method further comprises: the change-over time of its selection of UE informing network side, network side sends whether admit the UE message of selected change-over time to UE again, UE is after receiving the approval UE message of selected change-over time, just carry out the conversion of new old link, admit again and change otherwise postpone till next change-over time.

Described network side is UTRAN, and the Control Node of described network side is RNC, and the via node of described network side is a base station node B, and described link transforming message is that message or Radio Link carrying reconfiguration message are set up in the Radio Link carrying.With respect to prior art, the present invention has following beneficial effect:

1, because the present invention introduces a plurality of optional change-over times, sends to UE simultaneously,, select institute the shortest change-over time, thereby reach the continue purpose of time delay of shortening by allowing UE and UTRAN come whether to obtain confirming according to needed message separately.

2, because the present invention also can be at network side by judging when arrive in change-over time, connect transforming message and whether received fully, under abnormal conditions, time-count cycle of actual converted time retardation by UE, thereby can avoid call drop, improve the call completing rate of network and the time delay that continues.It is different from sign indicating number to be that new channel uplink is selected in addition, and the channel code of the different code trees of descending selection is avoided the power control abnormity.

3, because the present invention can also make UE carry out down-going synchronous at new channel, and on old channel, send RADIO BEAR SETUP COMPLETE or RADIO BEAR RECONFIGCOMPLETE message, RNC confirms that with this UE has collected the link transforming message, and the mode of the asynchronous activation Radio Link of notice NodeB, thereby guaranteeing on the basis of call drop not, cancel change-over time, reach the purpose that shortens the time delay that continues.

4, the present invention can also use the change-over time of agreement under the good situation of channel circumstance, the activationary time of UE notice UTRAN agreement, with UTRAN together the agreement activationary time on carry out the switching of new and old channel mechanism, can guarantee that UE and UTRAN are maintained the consistency of configuration, keep the unobstructed of channel.When channel circumstance is bad, use change-over time at the latest, can be so that can dispose change-over time, and try one's best little, thereby can reach the purpose that shortens the time delay that continues.

Description of drawings

Fig. 1 is the existing signaling process figure that sets up RAB synchronously;

Fig. 2 is the information interaction flow chart of first embodiment of the invention;

Fig. 3 is the schematic diagram of minimum treat time delay of the present invention;

Fig. 4 is the schematic diagram that the UE of first embodiment of the invention selects the actual converted time;

Fig. 5 is the schematic diagram that the described UTRAN of second embodiment of the invention selects the actual converted time;

Fig. 6 is the information interaction flow chart of third embodiment of the invention;

Fig. 7 is the information interaction flow chart of fourth embodiment of the invention.

Embodiment

Below by specific embodiments and the drawings the present invention is described in further details.

Core technology scheme of the present invention is: in the process of link conversion, communications user terminal UE is after collecting the link transforming message, select to carry out at short notice the conversion of new old link, by the link information of old link to network side transmission UE, network side carries out the conversion of the new old link of network side according to the information that UE reports simultaneously.

Scheme of the present invention is not limited only to the link of WCDMA system and changes the mechanism, and also applicablely comprises that at other link in communication system of Control Node, via node and user terminal changes the mechanism.Embodiment as herein described is that example describes with the WCDMA system, wherein network side is UTRAN, RNC is a Control Node, NodeB is a via node, be responsible for the data forwarding between user terminal UE and the Control Node, described link transforming message is that message (RADIO BEARSETUP or abbreviation RB SETUP) or Radio Link carrying reconfiguration message (RADIO BEARRECONFIG or abbreviation RB RECONFIG) are set up in the Radio Link carrying.

Below with four embodiment method of the present invention is described respectively.

First embodiment: set in advance at least two change-over times, send to UE simultaneously; And described UE selects change-over time, and at the concrete grammar that carry out the conversion of new old link this change-over time be: the moment that UE is collected the link transforming message adds that the conversion of UE prepares time delay and obtain one first reference time, and from default change-over time, select one be in after this first reference time and the shortest change-over time as the actual converted time, UE changes new old link in this actual converted time.

So just reach such effect: cover good scene at signal, UE is easy to collect the link transforming message, then can preferentially select short change-over time, covers relatively poor scene at signal, then select long change-over time again, thereby reach the purpose that shortens the time delay that continues.

Fig. 2 is the information interaction flow chart of first embodiment.Hypothesis sets in advance two change-over times herein, and first change-over time and second change-over time, first change-over time is short than second change-over time.Referring to Fig. 2, this flow process comprises:

Step 201, RNC and NodeB have finished the foundation of link, are carried as DCH or HSDPA, and this configuration is called old link.RNC receives after the RAB assignment that the link after beginning to reshuffle is called new link.

Step 202, RNC are after receiving the RAB assignment, judgement is that RB sets up or RB revises, if RB revises, the message that RNC will issue after selecting is that RADIO BEAR RECONFIG gives UE, if RB sets up, RNC issues RADIO BEAR SETUP message and gives UE.Suppose that herein the link transforming message that RNC issues is a RADIO BEAR SETUP message.

Step 203, RNC issue radio link reconfiguration message (RADIO LINKRECONFIG PREPARE) to NodeB, and NodeB carries out returning radio link reconfiguration after the radio link reconfiguration and is ready to complete message (RADIO LINK RECONFIG READY).UTRAN is inner, and to select conversion be to carry for first change-over time or carry out second change-over time by COMMIT message, and COMMIT message is Radio Link COMMIT message at the IUB mouth, is the COMMIT message of oneself in RNC inside.UTRAN is in configuration during new link herein, for new link up selection different with old link around sign indicating number, in the link code of descending selection with the different code trees of old link.Under change-over time inconsistent abnormal conditions, UE and UTRAN are in desynchronizing state, and the TPC between UE and the UTRAN separates to come out, and therefore can avoid UTRAN and UE inconsistently to cause the power control under the step-out unusual in change-over time.

Step 204, RNC send RADIO BEAR SETUP message to UE on old link, wherein carry cell (IE): first change-over time (for example 200ms), second change-over time (for example 400ms).In addition, can select to carry minimum treat time delay T1min in the described RADIO BEAR SETUP message.

Step 205, UE be (what is called collects and refers to such an extent that be to receive complete message) after collecting RB SETUP message, the moment that UE is collected RB SETUP message adds that the conversion of UE prepares time delay (being the time of UE before finishing new old link conversion) and obtain one first reference time, and from default change-over time, select one be in after this first reference time and the shortest change-over time as the actual converted time.Herein.If UE collected RB SETUP message before first change-over time, and the preparation that can finish conversion handles, and just selects to be for first change-over time actual change-over time; Otherwise select to be for second change-over time actual change-over time.Subsequently, UE changes new old link in this actual converted time.

Step 206, UE are by link transition response message, and be RB SETUP RLC ACK message this moment, and the selected actual converted time is sent to RNC; It is the RLC status report that the UE side is returned that RB SETUP RLC ACK refers in particular to, and has wherein comprised UE and has collected RB Setup condition of information information, and UTRAN learns by this report whether UE has collected RB Setup message.Certainly, UE also can carry this actual converted time by a special message and send to network side.After RNC receives RB SETUPRLC ACK message, utilize RADIO LINK RECONFIG COMMIT message to carry the actual converted time and send to NodeB, notice NodeB carries out the conversion of new old link according to the described actual converted time.

In this step, UE can not return the actual converted time to RNC, just return RB SETUP RLC ACK message to RNC according to existing normal mode, the moment that RNC will collect described RB SETUPRLC ACK message this moment adds that the conversion of network side prepares time delay and obtain one second reference time, from default change-over time, select one be in after this second reference time and the shortest change-over time as actual converted time of network side, and notice NodeB changes new old link in the actual converted time of this network side.Herein, if described second reference time before first change-over time, then RNC selects the time change-over time of first change-over time as network side, otherwise selects for second change-over time.If UTRAN does not still receive the RB SetupRLC ACK of UE on change-over time that sets in the end, UTRAN is chosen in and goes up the new old link of conversion last change-over time that sets so.

Fig. 3 is the schematic diagram of T1min.Referring to Fig. 3, the implication of described T1min is as follows:

UE collects after the RB SETUP message, be T1 the remaining time that arrived for first change-over time from current time, if T1 is the conversion preparation time delay (Tueprocess) of UE greater than the processing delay of keeping for UE, then to select for first change-over time be the actual converted time to UE, is the actual converted time otherwise selected for second change-over time; UTRAN receives that after the RB SETUP RLC ACK, be T2 the remaining time that arrived for first change-over time from current time, if T2 prepares time delay greater than the conversion of network side, just selects come into force for first change-over time, otherwise selects come into force for second change-over time.The value of the conversion preparation time delay of described network side is divided into two kinds of situations and is: if the words of RNC and NodeB parallel processing: then get the processing delay Trncprocess that new old link conversion is carried out in max{RNC inside, (RNC is to the right processing delay of NodeB propagation delay time+NodeB) }; If RNC and NodeB serial process: then the processing delay (Trncprocess), RNC of getting RNC are to the propagation delay time of NodeB and the processing delay sum of NodeB.

For guaranteeing that UTRAN and UE change in same change-over time together, avoid UTRAN or UE to have little time normal conversion, need at least to satisfy:

Time delay is prepared in the conversion of T1＞Trlcuplink+ network side, and this condition can guarantee that UTRAN can works fine, and Trlcuplink wherein is the up link time delay of UE to network side.

T1＞Tueprocess, this condition guarantees that UE can works fine.

T1min=max{Tueprocess, time delay is prepared in the conversion of Trlcuplink+ network side }

The T1min suggestion can be configured by network side, represents the UE side time delay that comes into force at the latest.

For example Tueprocess is 100ms, has considered that UE need finish the time delay that RB SETUP message is carried out inter-process; Trlcuplink is 50ms; It is 80ms that time delay is prepared in the conversion of network side.

This moment T1min=max{100ms, 50+80ms}=130ms, the T1min proposed arrangement is 130ms.

If select to have carried minimum treat time delay T1min in the above-mentioned RADIO BEAR SETUP message.Then above-mentioned steps 205 and step 206 can be by following steps 205 ' and steps 206 ' replace.

Step 205 ', UE is after collecting RB SETUP message, the moment that UE is collected RB SETUP message adds the above minimum treat time delay and obtains a reference time, and from default change-over time, select one be in after this reference time and the shortest change-over time as the actual converted time, UE changes new old link in this actual converted time.

Step 206 ', UE sends the selected actual converted time by old link to network side, can carry the actual converted time or carry this actual converted time by link transition response message by specific messages.After RNC receives this actual switching time, utilize RADIO LINK RECONFIG COMMIT message informing NodeB to carry out the conversion of new old link according to the described actual converted time.

Fig. 4 is the schematic diagram that the UE of this first embodiment selects the actual converted time.Wherein in Fig. 4 A, UE had just collected RB SETUP message before first change-over time, therefore with first change-over time as the actual converted time; In Fig. 4 B, UE has collected RB SETUP message after first change-over time, before second change-over time, therefore with second change-over time as the actual converted time.

Collected RB SETUP message for reducing appearance following abnormal conditions: UE among this first embodiment, preparation came into force on certain change-over time, but error code appears in the RB SETUP RLC ACK that sends to UTRAN, cause UTRAN on this change-over time, not come into force, this moment, UTRAN was in the old link configuration, therefore UE may cause the up-downgoing signaling between UTRAN and the UE obstructed on new link configuration.In order reducing the obstructed probability of this signaling to take place, constantly to retransmit RB SETUPRLC ACK by UE before described change-over time and give UTRAN, increases RB SETUP RLC ACK by the normal chance that receives of UTRAN.

In addition, this first embodiment also has the continue mechanism of time delay of a saving: NodeB makes the following judgment after a plurality of Activation Time that activate possibly, if still keeping old link this moment, if and detect the situation that uplink loss occurs, detection illustrates that less than the signal of UE UE may use new link this moment, and NodeB just sends the message informing RNC that puts the step-out type change-over time, after RNC receives this message, use new link at once.

Among this first embodiment, existing protocol has been carried out following change:

1, increases tabulation change-over time among the Commit of radio link reconfiguration, perhaps select to increase and be the cell of now immediately change-over time (being Activation Time), other value implications that perhaps define outside the original C FN 0 to 255 are to change immediately, perhaps introduce a new message and substitute similar functions.

Referring to table 1, if below two IE one of them definition is arranged:

IE/Group Name	Implication
IE/Group Name	Implication	CFN	Other value implications outside the CFN 0 to 255 are to change immediately
Activation Now	TRUE representative conversion immediately, the FALSE representative is not to change immediately	CFN

Table 1

Described tabulation change-over time is necessary, and now also must increase, but not necessarily needs to issue simultaneously network on stream, only sends tabulation change-over time sometimes and gets final product.

2, in radio link reconfiguration, increase IE: tabulation change-over time.

3, increase new IE in RADIO BEAR SETUP and the RADIO BEAR RECONFIG message: first change-over time, second change-over time, and select to increase TImin.Referring to table 2:

IE/Group Name	Implication
IE/Group Name	Implication	First change-over time	The change-over time that UE preferentially comes into force.
Second change-over time	The change-over time that UE comes into force at the latest.	First change-over time
Second change-over time		T1min

Table 2

In the table 1 or change-over time tabulation, provide the not only change-over time more than 2.

This first embodiment also can use in the message current already present change-over time of IE, allows its numerical value be second change-over time, allows the behavior of RNC and UE and the definition of second change-over time describe consistent.

This first embodiment need increase the UE ability information, makes UTRAN can learn whether UE supports to discern the function of the IE of tabulation change-over time or T1min.Only for the UE that supports this function, UTRAN just adopts the time delay that continues of the mechanism optimization in this example.

Second embodiment: described UE and network side adopt the cycle timing; Network side sets in advance and is handed down to UE short change-over time, and UE is chosen in the described default conversion of carrying out new old link change-over time after collecting the link transforming message; UE is to network side return link transition response message; The detailed process that the information that network side reports according to UE is carried out the conversion of the new old link of network side is: A, RNC are with the change-over time of default change-over time as reality; B, RNC judge whether to receive the link transition response message that UE reports before the change-over time of described reality, if then notify NodeB to carry out new old link conversion in this actual change-over time; Otherwise, postponed a time-count cycle change-over time of reality, and return step B.

Fig. 5 is the schematic diagram that the described UTRAN of second embodiment selects the actual converted time.Referring to Fig. 5, UTRAN is by judging when arrive in default short change-over time, whether RB SETUP message is received fully by UE, promptly judge whether to be subjected to RB SETUP RLC ACK message from UE, if do not have, then, can avoid call drop so herein, improve the call completing rate of network a time-count cycle of actual converted time retardation (being 2.56 seconds).In addition, similar to first embodiment, also be herein the up selection of new link different around sign indicating number, the link code of the different code trees of descending selection is avoided the power control abnormity.

The described method of this second embodiment not only is suitable for RB SETUP/RB RECONFIG message, other synchronized reconfiguration message, for example physical link is reshuffled, transmission link is reshuffled, or the like can adopt this method, avoid call drop.

The 3rd embodiment: network side sets in advance change-over time and is handed down to UE, be set to change immediately or be set to the existing relatively short time of change-over time this change-over time, UE is after collecting the link transforming message, needn't on new link, carry out down-going synchronous, according to the conversion of carrying out new old link described change-over time, promptly change immediately or change at short notice; After collecting the link transforming message, UE converts message by old link to the network side return link, i.e. RB SETUP COMPLETE or RB RECONFIGCOMPLETE.The RNC of network side converts message and knows that UE has collected the link transforming message by receiving described link, the NodeB of informing network side promptly changes immediately or changes at short notice according to the described default conversion of carrying out the new old link of network side change-over time.

The method of this 3rd embodiment needn't be carried out down-going synchronous at new link by UTRAN notice UE, allow UE on old link, send RADIO BEAR SETUP COMPLETE or RADIO BEARRECONFIG COMPLETE message, the mode of the asynchronous transfer link of RNC notice NodeB, cancel change-over time, reach the purpose that shortens the time delay that continues.

Fig. 6 is the information interaction flow chart of the 3rd embodiment.Referring to Fig. 6, this flow process comprises:

Step 601, RNC and NodeB have finished the foundation of link, are carried as DCH or HSDPA, and this configuration is called old link.RNC receives after the RAB assignment that the link after beginning to reshuffle is called new link.

Step 602, RNC are after receiving the RAB assignment, judgement is that RB sets up or RB revises, if RB revises, the message that RNC will issue after selecting is that RADIO BEAR RECONFIG gives UE, if RB sets up, RNC issues RADIO BEAR SETUP message and gives UE.Suppose that herein the link transforming message that RNC issues is a RADIO BEAR SETUP message.

Step 603, RNC issue radio link reconfiguration message (RADIO LINKRECONFIG PREPARE) to NodeB, and NodeB carries out returning radio link reconfiguration after the radio link reconfiguration and is ready to complete message (RADIO LINK RECONFIG READY).

Step 604, RNC send RADIO BEAR SETUP or RADIOBEAR RECONFIG message to UE on old link, fill in little change-over time or be the conversion regime of (now) conversion immediately, and the mode of now is set to 0 for change-over time; Simultaneously, also carry IE in the described message: do not need down-going synchronous (Need Not downlink Synchrolized), this IE is set to TRUE.

After step 605, UE receive RADIO BEAR SETUP or RADIOBEAR RECONFIG message, find that IE:Need Not downlink Synchrolized is TRUE, carry out the message validity checking, carrying out internal resource prepares, UE is chosen on the old link and sends transfer link and finish message, be RADIO BEAR SETUP COMPLETE message or RADIO BEAR RECONFIGCOMPLETE message, give RNC; UE receives response message RLC:RADIOBEAR SETUP COMPLETE RLC ACK or the RADIO BEAR RECONFIGCOMPLETE RLC ACK that RNC returns simultaneously; Learn that by this response message UE RNC has collected RADIOBEAR SETUP COMPLETE or RADIO BEAR RECONFIG COMPLETE message, UE is afterwards according to the described default conversion of carrying out new old link change-over time.UE also can select not wait for RLC:RADIO BEAR SETUP COMPLETE or RADIO BEARRECONFIG COMPLETE RLC ACK, after collecting the link transforming message, with regard to immediately according to the described default conversion of carrying out new old link change-over time.If UE discovery is any unusual during this, then on old link, send RADIO BEAR SETUP FAILURE or RADIO BEARRECONFIG FAILURE message to RNC.

Step 606, RNC receive after RADIO BEAR SETUP COMPLETE or the RADIOBEAR RECONFIG COMPLETE, send RADIO LINK RECONFIGCOMMIT message to NodeB, the described default change-over time of carrying.

After step 607, NodeB receive RADIO LINK RECONFIG COMMIT message, resolve change-over time wherein, if for now just changes new old link immediately, if just on the CFN of appointment, carry out new and old link conversion the change-over time of appointment (CFN).

This 3rd embodiment has following change to existing protocol:

1, increases notice UE in RADIO BEAR SETUP and the RADIOBEAR RECONFIG message and needn't carry out the cell that down-going synchronous just can send RADIO BEAR SETUP COMPLETE or RADIO BEAR RECONFIG COMPLETE, referring to following table 3.

IE/Group Name	Implication
IE/Group Name	Implication	Need Not downlink Synchrolized	The TRUE representative needn't be carried out down-going synchronous, send RADIO BEAR SETUP COMPLETE or RADIO BEAR RECONFIG COMPLETE message on old link, the FALSE representative still needs down-going synchronous

Table 3

Also can be newly-increased optional IE,, on old link, send RADIO BEAR SETUP COMPLETE or RADIOBEAR RECONFIG COMPLETE message with regard to representing UE to carry out down-going synchronous as long as this IE in message, occurs.

2, increase the UE behavior description:

UE receives after RADIO BEAR SETUP COMPLETE or the RADIO BEARRECONFIG COMPLETE message, on new link, do not obtain down-going synchronous, just can send on RADIO BEAR SETUP COMPLETE or the RADIO BEAR RECONFIGCOMPLETE message.

3, increasing Activation Time among the Commit of radio link reconfiguration is the cell of now, and other value implications that perhaps define outside the original C FN 0 to 255 are to change immediately, see also table 4:

IE/Group Name	Implication
IE/Group Name	Implication	CFN	Other value implications outside the CFN 0 to 255 are to change immediately
Activation Time	TRUE representative conversion immediately, the FALSE representative is not to change immediately	CFN

Table 4

Increase the UE ability information among the 3rd embodiment, make UTRAN can learn whether UE is supported in the function that sends RB SETUP COMPLETE message on the old channel.Only for the UE that supports this function, UTRAN just adopts the time delay that continues of the mechanism optimization in this example.

The 4th embodiment: network side sets in advance the conversion offset delay and is handed down to UE; UE prepares the change-over time that time delay is determined an agreement according to the conversion of the described conversion offset delay that sets in advance and self after collecting the link transforming message, and according to the conversion of carrying out new old link change-over time of this agreement; UE also sends change-over time of described agreement to RNC by old link; After RNC received the change-over time of described agreement, notice NodeB was according to the conversion of carrying out the new old link of network side change-over time of this agreement.

Fig. 7 is the information interaction flow chart of the 4th embodiment.Referring to Fig. 7, this flow process comprises:

Step 701, RNC and NodeB have finished the foundation of link, are carried as DCH or HSDPA, and this configuration is called old link.RNC receives after the RAB assignment that the link after beginning to reshuffle is called new link.

Step 702, RNC are after receiving the RAB assignment, judgement is that RB sets up or RB revises, if RB revises, the message that RNC will issue after selecting is that RADIO BEAR RECONFIG gives UE, if RB sets up, RNC issues RADIO BEAR SETUP message and gives UE.Suppose that herein the link transforming message that RNC issues is a RADIO BEAR SETUP message.

Step 703, RNC issue radio link reconfiguration message (RADIO LINKRECONFIG PREPARE) to NodeB, and NodeB carries out returning radio link reconfiguration after the radio link reconfiguration and is ready to complete message (RADIO LINK RECONFIG READY).

Step 704, RNC send RADIO BEAR SETUP or RADIOBEAR RECONFIG message to UE on old link, fill in little change-over time or be the conversion regime of (now) conversion immediately, and the mode of now is set to 0 for change-over time; Simultaneously, also carry IE in the described message: do not need down-going synchronous (Need Not downlink Synchrolized), this IE is set to TRUE.Also carry IE simultaneously in this message: the dislocation bias time delay.This dislocation bias time delay can set in advance in network side or UE side, can be handed down to UE by RNC when being arranged on network side.The computational methods of this dislocation bias time delay are UE arrives RNC in the RADIO of follow-up response BEAR SETUP COMPLETE or RADIO BEAR RECONFIG COMPLETE message transmission and processing delay T1 (being the up link time delay of UE to network side), RADIO LINK RECONFIG COMMIT message arrives the propagation delay time T2 of NodeB and the processing delay T3 of NodeB from RNC, in conjunction with RNC inter-process time delay T4, T1+T2+T3+T4 is as the dislocation bias time delay.In addition, the dislocation bias time delay can also be revised with actual other delay characters.

After step 705, UE receive RADIO BEAR SETUP or RADIOBEAR RECONFIG message, find that IE:Need Not downlink Synchrolized is TRUE, carry out the message validity checking, carry out internal resource and prepare.UE passes over according to RNC: the dislocation bias time delay, in conjunction with the processing delay of UE oneself at new link, time delay is prepared in i.e. conversion, and summation forms the IE that will carry in RADIO BEARSETUP COMPLETE or the RADIO BEAR RECONFIG COMPLETE message: CFN change-over time of agreement.

Step 706, UE select to send RADIO BEAR SETUP COMPLETE on the old link or RADIO BEAR RECONFIG COMPLETE message arrives RNC, carries the change-over time of agreement.Also can on old link, send the message of a neotectonics herein, be used for carrying the conversion CFN of described agreement specially.

Step 707, RNC have received RADIO BEAR SETUP COMPLETE or RADIOBEAR RECONFIG COMPLETE message, learn agreement change-over time wherein, RNC just sends RADIO LINK RECONFIG COMMIT message to NodeB, the ActivationTime that carries is the change-over time of the agreement that reports of UE, and NodeB is according to the conversion of carrying out new old link change-over time of this agreement.

In addition, among this 4th embodiment, also be handed down to UE predeterminable change-over time at the latest of network side, and RNC sends response message to UE after receiving the change-over time of agreement; UE further judges whether the response message of receiving that described RNC returns when arrive in the change-over time of described agreement, if then carry out new old link conversion in the change-over time of this agreement; Otherwise, carry out new old link conversion in predetermined change-over time at the latest.Described RNC judges whether agreement change-over time of receiving that UE returns when arrive change-over time at the latest predetermined, if then notify NodeB to carry out the conversion of new old link change-over time according to this agreement; Otherwise NodeB is in the described predetermined conversion of carrying out new old link change-over time at the latest for notice.

Concrete: after UE has sent RADIO BEAR SETUP COMPLETE or RADIOBEAR RECONFIG COMPLETE message, begin to receive RLC:RADIO BEARSETUP COMPLETE RLC ACK or RADIO BEAR RECONFIG COMPLETERLC ACK, if receive then know that RNC has collected RADIO BEAR SETUPCOMPLETE or RADIO BEAR RECONFIG COMPLETE message, just by appointment change-over time be transformed into new link afterwards from old link.If UE to the CFN of agreement do not receive response message RLC ACK, UE does not just come into force on the CFN of agreement, CFN comes into force and be selected at the latest.UE also can select not wait for RLC:RADIO BEAR SETUP COMPLETE or RADIO BEAR RECONFIG COMPLETE RLC ACK, just starts the flow process of back.If during UE find any unusual, just on old link transmission RADIO BEAR SETUPFAILURE or RADIO BEAR RECONFIG FAILURE message to RNC.

If RNC has received RADIO BEAR SETUP COMPLETE or RADIO BEARRECONFIG COMPLETE message, learn agreement CFN wherein, RNC just sends RADIOLINK RECONFIG COMMIT message to NodeB, and the Activation Time that carries is the agreement CFN that UE reports; If RNC change-over time at the latest near the time, also do not receive this message, RNC just sends RADIO LINK RECONFIG COMMIT message to NodeB, carries change-over time at the latest.RADIO LINK RECONFIG COMMIT message can be to receive after RADIO BEAR SETUP COMPLETE or the RADIO BEAR RECONFIGCOMPLETE to send on old link, also can be simultaneously and RADIO BEAR SETUP or RADIOBEAR RECONFIG send (only carrying change-over time at the latest at this moment).After NodeB receives RADIO LINK RECONFIG COMMIT message, judge Activation Time, if for now just changes this link immediately, if the CFN of appointment just carries out new and old link conversion on the CFN of appointment.

This 4th embodiment is as follows to the change of existing protocol:

1, increases notice UE in RADIO BEAR SETUP and the RADIOBEAR RECONFIG message and needn't carry out down-going synchronous, just can send the cell of RADIO BEAR SETUP COMPLETE or RADIO BEAR RECONFIG COMPLETE.

Newly-increased IE or on existing IE, carry out implication and expand, referring to table 5:

Table 5

Also can be newly-increased optional IE,, just represent UE needn't carry out down-going synchronous, on old link, send RADIO BEAR SETUP COMPLETE or RADIO BEARRECONFIG COMPLETE message as long as this IE in message, occurs.

2, increase the UE behavior description:

3, increasing Activation Time among the Commit of radio link reconfiguration is the cell of now, and other value implications that perhaps define outside the original C FN 0 to 255 are to change immediately, referring to table 6, as long as wherein two IE have one of them definition:

Table 6

4, increase new IE in RADIO BEAR SETUP and the RADIOBEAR RECONFIG message: conversion time delay amount of bias.Referring to table 7:

IE/Group Name	Implication
IE/Group Name	Implication	Conversion time delay amount of bias	Be used to notify the message time delay transmission characteristic of UE network side, be used for UE and remove to calculate the IE that it will carry at RADIO BEAR SETUP COMPLETE and RADIO BEAR RECONFIG COMPLETE: the numerical value of the conversion CFN of agreement

Table 7

5, in RADIO BEAR SETUP COMPLETE and RADIO BEARRECONFIG COMPLETE message, carry the conversion CFN of agreement, referring to table 8:

IE/Group Name	Implication
IE/Group Name	Implication	The conversion CFN of agreement	Be used for the CFN that the UE informing network will be changed

Table 8

6, increase new IE in RADIO BEAR SETUP and the RADIOBEAR RECONFIG message: change-over time at the latest, referring to table 9:

IE/Group Name	Implication
IE/Group Name	Implication	Change-over time at the latest	RNC is change-over time at the latest, if also confiscate RADIO BEAR SETUP COMPLETE or the RADIO BEAR RECONFIG COMPLETE message of UE, notify at the latest change-over time NodeB to do conversion on the new and old link configuration with regard to adopting; Be used to notify UE when not receiving RADIO BEAR SETUP COMPLETE RLC ACK or RADIO BEAR RECONFIG COMPLETE RLC ACK, adopt the conversion of carrying out at the latest change-over time on the new and old link configuration.

Table 9

Also can use in the message current already present change-over time of IE, allow its numerical value be at the latest change-over time, make the behavior of RNC and UE and the definition description of change-over time at the latest consistent.

Increase the UE ability information among the 4th embodiment, make UTRAN can learn whether UE is supported in the enterprising line activating time negotiation of old channel.Only for the UE that supports this function, UTRAN just adopts the time delay that continues of the mechanism optimization in this example.

In addition, RNC is carrying out when dynamic channel reshuffles, do not have CN to issue the RAB assignment message and give RNC, therefore RNC is that the own RB reconfiguration message that initiatively issues is given UE, radio link reconfiguration message is given NodeB, the controlling mechanism of this moment and in full accord with the solution of the present invention, different is not have the RAB assignment message.

Of the present invention also can have following mode repeatedly to confirm alternately alternately: the change-over time of UE informing network preparation, UTRAN sends whether admit the UE message of selected change-over time to UE again, for example can send message negates selected change-over time of UE to UE, also can send the message of confirming the change-over time that UE selects by UTRAN, UE only receives message change-over time of confirming UE, UE just changes, and admits again and changes otherwise postpone till next change-over time.

The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.

Claims

1, the link converting method in a kind of communication system, it is characterized in that, in the process of link conversion, communications user terminal UE is after collecting the link transforming message, select change-over time, and carry out the conversion of new old link in this change-over time, and sending the link information of UE by old link to network side simultaneously, network side carries out the conversion of the new old link of network side according to the information that UE reports.

2, method according to claim 1 is characterized in that, this method further comprises: set in advance at least two change-over times;

Described UE selects change-over time, and at the concrete grammar that carry out the conversion of new old link this change-over time be: the moment that UE is collected the link transforming message adds that the conversion of UE prepares time delay and obtain one first reference time, and from default change-over time, select one be in after this first reference time and the shortest change-over time as the actual converted time, UE changes new old link in this actual converted time.

3, method according to claim 2 is characterized in that, described UE by old link to the link information of the UE of network side transmission is: the selected actual converted of the UE time; The detailed process that the information that described network side reports according to UE is carried out the conversion of the new old link of network side is: the via node of the Control Node informing network side of network side carries out the conversion of new old link according to the described actual converted time.

4, method according to claim 2 is characterized in that, described UE by old link to the link information of the UE of network side transmission is: the link transition response message that UE returns to network side; The detailed process that the information that described network side reports according to UE is carried out the conversion of the new old link of network side is: the moment that the Control Node of network side will collect described link transition response message adds that the conversion preparation time delay of network side obtains one second reference time, from default change-over time, select one be in after this second reference time and the shortest change-over time as actual converted time of network side, and the via node of informing network side is changed new old link in the actual converted time of this network side; If network side is not in the end still received the link transition response message that UE returns on a set change-over time, UTRAN is chosen in and goes up the new old link of conversion last set change-over time so.

5, method according to claim 2 is characterized in that, this method further comprises: UE before the time, constantly retransmits the link information of UE in actual converted to network side.

6, method according to claim 2, it is characterized in that, this method further comprises: if the via node of network side is still being kept old link after change-over time, and if this via node detects the signal less than UE, then send the Control Node of the message informing network side of putting the step-out type change-over time, after the Control Node of network side is received this message, use new link at once.

7, method according to claim 1 is characterized in that, this method further comprises: set in advance at least two change-over times and a minimum treat time delay T1min;

Described UE selects change-over time, and at the concrete grammar that carry out the conversion of new old link this change-over time be: the moment that UE is collected the link transforming message adds the above minimum treat time delay and obtains a reference time, and from default change-over time, select one be in after this reference time and the shortest change-over time as the actual converted time, UE changes new old link in this actual converted time;

Described UE by old link to the link information of the UE of network side transmission is: the selected actual converted of the UE time;

The detailed process that the information that described network side reports according to UE is carried out the conversion of the new old link of network side is: the via node of the Control Node informing network side of network side carries out the conversion of new old link according to the described actual converted time.

8, according to claim 3 or 7 described methods, it is characterized in that described UE by the concrete mode of old link to the selected actual converted of the UE time that network side sends is: send to network side by carry the described actual converted time in the link transition response message that network side returns at UE; Perhaps carry the message of this actual converted time and send to network side by special being used to.

9, method according to claim 7 is characterized in that, described minimum treat time delay is that time delay is prepared in the conversion of the maximum of following two time delays: UE; UE prepares the time delay sum to the up link time delay of network side and the conversion of network side.

10, method according to claim 9, it is characterized in that, time delay is prepared in the conversion of described network side: if the words of Control Node and via node parallel processing: then get the processing delay that new old link conversion is carried out in max{ Control Node inside, (Control Node is to the processing delay of via node propagation delay time+via node) }; If Control Node and via node serial process: then get the processing delay of Control Node), Control Node is to the propagation delay time of via node and the processing delay sum of via node.

According to claim 2 or 7 described methods, it is characterized in that 11, be two the described change-over time that sets in advance.

12, method according to claim 1 is characterized in that:

Described UE and network side adopt the cycle timing;

Described UE selects change-over time, and at the concrete grammar that carry out the conversion of new old link this change-over time be: network side sets in advance and is handed down to UE short change-over time, UE is chosen in the described default conversion of carrying out new old link change-over time after collecting the link transforming message;

Described UE by old link to the link information of the UE of network side transmission is: the link transition response message that UE returns to network side;

The detailed process that the information that described network side reports according to UE is carried out the conversion of the new old link of network side is: the Control Node of A, network side is with the change-over time of default change-over time as reality; B, Control Node judge whether to receive the link transition response message that UE reports before the change-over time of described reality, if then the via node of informing network side carries out new old link conversion in this actual change-over time; Otherwise, postponed a time-count cycle change-over time of reality, and return step B.

13, method according to claim 12 is characterized in that, the cycle of described UE and network side timing is 2.56 seconds.

14, according to claim 2,7 or 12 described methods, it is characterized in that, described in the process of link conversion, network side be new link up selection different with old link around sign indicating number, in the link code of descending selection with the different code trees of old link.

15, method according to claim 1 is characterized in that,

Described UE selects change-over time, and in the concrete mode that carry out the conversion of new old link this change-over time be: the Control Node of network side sets in advance change-over time and is handed down to UE, be set to change immediately or be set to the existing relatively short time of change-over time this change-over time, UE carries out the conversion of new old link according to described change-over time after collecting the link transforming message;

Described UE by old link to the link information of the UE of network side transmission is: UE converts message to the link that network side returns;

The detailed process that the information that described network side reports according to UE is carried out the conversion of the new old link of network side is: the Control Node of network side converts message and knows that UE has collected the link transforming message by receiving described link, and the via node of informing network side is according to the described default conversion of carrying out the new old link of network side change-over time.

16, method according to claim 15 is characterized in that, described UE just carries out the conversion of new old link immediately according to described change-over time after collecting the link transforming message.

17, method according to claim 15 is characterized in that,

This method further comprises: the Control Node of network side sends response message to UE receiving after link converts message;

Described UE carries out the conversion of new old link again according to described change-over time after receiving this response message.

18, method according to claim 1 is characterized in that,

This method further comprises: set in advance the conversion offset delay;

Described UE selects change-over time, and be: after UE is collecting the link transforming message in the concrete mode that carry out the conversion of new old link this change-over time, the change-over time that time delay is determined an agreement is prepared in conversion according to the described conversion offset delay that sets in advance and self, and according to the conversion of carrying out new old link change-over time of this agreement;

Described UE by old link to the link information of the UE of network side transmission is: the change-over time of described agreement;

The detailed process that the information that described network side reports according to UE is carried out the conversion of the new old link of network side is: after the Control Node of network side received the change-over time of described agreement, the via node of informing network side was according to the conversion of carrying out the new old link of network side change-over time of this agreement.

19, method according to claim 18, it is characterized in that described conversion offset delay is: UE to the processing delay of the Control Node of the up link time delay of network side, network side, Control Node to the propagation delay time of network side via node and the processing delay sum of via node.

20, method according to claim 18, it is characterized in that described UE by old link to the change-over time that network side returns agreement is: by sending to network side the change-over time of in the link transition response message that network side returns, carrying described agreement at UE; Perhaps carry the message of the change-over time of this agreement and send to network side by special being used to.

21, method according to claim 18 is characterized in that, this method further comprises: also be handed down to UE default change-over time at the latest of network side, and the Control Node of network side sends response message to UE after receiving the change-over time of agreement; UE further judges whether the response message of receiving that described Control Node is returned when arrive in the change-over time of described agreement, if then carry out new old link conversion in the change-over time of this agreement; Otherwise, carry out new old link conversion in predetermined change-over time at the latest.

22, method according to claim 21, it is characterized in that, this method further comprises: described Control Node judges whether agreement change-over time of receiving that UE returns when arrive change-over time at the latest predetermined, if then notify described via node to carry out the conversion of new old link change-over time according to this agreement; Otherwise the notice via node is in the described predetermined conversion of carrying out new old link change-over time at the latest.

23, method according to claim 18 is characterized in that, described conversion offset delay is arranged on network side or UE side.

24, according to claim 2 or 7 described methods, it is characterized in that, this method further comprises: the change-over time of its selection of UE informing network side, network side sends whether admit the UE message of selected change-over time to UE again, UE is after receiving the approval UE message of selected change-over time, just carry out the conversion of new old link, admit again and change otherwise postpone till next change-over time.

25, according to each described method in the claim 3,4,5,6,9,10,12 or 13 or 15 to 23, it is characterized in that, described network side is UTRAN, the Control Node of described network side is RNC, the via node of described network side is a base station node B, and described link transforming message is that message or Radio Link carrying reconfiguration message are set up in the Radio Link carrying.