CN101273659B

CN101273659B - IUB/IUR HSDPA/HSUPA mobility procedures improvement

Info

Publication number: CN101273659B
Application number: CN2006800358890A
Authority: CN
Inventors: 仲俣正利; T·阿屈利
Original assignee: Nokia Oyj
Current assignee: Nokia Technologies Oy
Priority date: 2005-08-23
Filing date: 2006-08-22
Publication date: 2011-11-09
Anticipated expiration: 2026-08-22
Also published as: CN101273659A; ZA200801687B

Abstract

Data structure is shown for radio link addition messages and radio link deletion messages of a mobility procedure in a wireless telecommunications system, each message for at least temporary storage in a computer-readable medium during transfer of said message, wherein each radio link addition message and each radio link deletion message is a request including an optional information element identifying a connection frame number and an information element including a radio link identification. Various devices and methods are shown individually and in combination using this data structure.

Description

The improvement of IUB/IUR HSDPA/HSUPA mobile process

The cross reference of related application

The application requires the priority of following application: the applying date is the U.S. Provisional Application 60/730 on October 26th, 2005,610, the applying date is the U.S. Provisional Application 60/726 on October 12nd, 2005,320, the applying date is the U.S. Provisional Application 60/719 on September 21st, 2005,409 and the applying date be the U.S. Provisional Application 60/710,981 on August 23rd, 2005.

Technical field

The field of the invention relates to mobile communication and is disclosed in universal mobile telecommunications system (UMTS) terrestrial radio of third generation partnership projects (3GPP) inserts the background of (UTRA) but is not limited to this.In this background, the present invention is disclosed as and relates to the mobility that high-speed downlink packet inserts (HSDPA) and High Speed Uplink Packet access (HSUPA), be current have only reconfigure the just possible HS-DSCH/E-DCH Serving cell of process by radio network sub-system interface (Iub/Iur) by RF and change, but the invention is not restricted to this concrete technological accumulation and inheritance.

Background technology

With reference to Fig. 1, universal mobile telecommunications system (UMTS) packet network architecture comprises subscriber equipment (UE), UMTS terrestrial radio access network (UTRAN) and these main architectural elements of core network (CN).UE by radio (Uu) interface and interface to UTRAN, and UTRAN passes through (wired) Iu interface and interface to core network.

Fig. 2 shows this framework, particularly UTRAN, some further details.UTRAN comprises a plurality of radio network sub-system (RNS) that respectively comprise at least one radio network controller (RNC).Each RNC can be connected to the Node B of a plurality of 3GPP peer-to-peers as GSM base station (second generation radio access technologies (RAT)).Each Node B can be via the radio interface shown in Fig. 1 (Uu) and a plurality of UE wireless links.Given UE can with a plurality of Node B wireless links, even one or more Node B in these a plurality of Node B is connected to different RNCs.For example the UE1 among Fig. 2 can with the Node B 2 of RNS 1 and Node B 3 wireless links of RNS 2, wherein Node B 2 and Node B 3 are adjacent node B.The RNC of different RNS can connect by the Iur interface, and this Iur interface allows mobile UE to keep when the sub-district of the Node B that is subordinated to a RNC traverses to the sub-district of the Node B that belongs to another RNC and the getting in touch of two RNC.One of RNC will serve as " service " or " control " RNC (SRNC or CRNC), and another RNC will serve as " drift " RNC (DRNC).Even can set up the Drift Radio Network Controller chain that extends from given SRNC.Will be on this meaning under the control of neighbor cell from each node, a plurality of Node B are adjacent node B normally.Mobile UE can pass through neighbor cell and need not to rebulid and being connected of new node B, if because or Node B is connected to same RNC or they are connected to different RNCs then RNC is connected to each other.In the such moving process of UE, require sometimes to add and abandon radio link, thereby UE can keep at least one radio link that leads to UTRAN always.This is called soft handover (SHO).

Handoff functionality is based on Radio Measurement, and it is used to keep core network institute requested service quality.Network is the handover decisions that various parameters that switchover policy that radio link control utilizes has been determined to be provided with based on measurement result that UE/RNC reported with for each sub-district are made.The network directional switching also may be because radio link be controlled other former thereby generation in addition, for example in order to control the service distribution between the sub-district.Given Virtual network operator is determined switchover policy accurately, but may type comprise that 3G-3G switches, FDD is soft/and More Soft Handoff, FDD inter-frequency hard handoffs, FDD/TDD are switched, TDD/FDD switches, TDD/TDD switches, 3G-2G switches and oppositely switch.The reason that starts handoff procedure is numerous, comprises uplink quality, uplink signal measurement, down link, down link signal measurement, distance, service change, better sub-district, O﹠amp; M intervention, directed retry, business, seize etc.

About soft handover, v.3.1.0 it have description in the 5.1.4 chapter of (2000-03) at 3G TR 25.922.Wherein soft handover is described to following switching, travelling carriage begins to communicate with new node B on same carrier frequency in this switching, perhaps begins to proceed to the sector communication (More Soft Handoff) of same website to have carried out communicating by letter that code word (code) changes more.With regard to soft handover, " active set " is defined as the Node B collection that UE is connected to simultaneously, promptly constitutes this active set when the UTRA sub-district of forward direction UE allocation of downlink DPCH.Soft switching process comprises a plurality of simple functions: (1) is measured; (2) measure filtration; (3) measurement report; (4) execution is switched in Soft Handover Algorithm and (5).

Filter in a suitable manner to the measurement triggering of monitored cells constitute the reporting event that Soft Handover Algorithm is imported substantially.To the definition of " active set ", " monitor collection " and all reporting events are described in TS 25.331, V6.6.0 (2005-06) " Radio Resource Control (RRC); Protocol Specification (Release 6) " in provide.Based on the measurement to the monitored cells collection, whether the soft handover functional assessment should add any Node B (radio link interpolation), remove any Node B (radio link removal) or change any Node B (radio of combination adds and removes) in active set from active set to active set; Carry out the process that is called " active set renewal " then.The example of Soft Handover Algorithm and execution thereof are shown in the 5.1.4.2 and 5.1.4.3 chapter and appendix C (showing the flow chart of Soft Handover Algorithm) thereof of 3G TR25.992.

3GPP TS 25.303 v.4.0.0 (2001-03) radio link that FDD has been shown in its Figure 30 adds.As mentioned above, the measurement report that sends by UE triggers the radio link interpolation in the network rrc layer.Network RRC is the new radio link of configuration on physical layer earlier.Begin immediately to send and receive.Network RRC sends to UE RRC with RRC active set updating message then.UE RRC configuration layer 1 begins to receive.After the affirmation of physical layer, the active set renewal is finished message and is sent to RNC-RRC in from UE.

In 3GPP, agreed shared channel, be that so-called high-speed downlink packet access (HSDPA) notion is added UMTS (universal mobile telecommunications system) terrestrial radio access network (UTRAN) framework to, see 3GPP TS 25.308 v6.3.0 (2004-12).HSDPA basic thought behind is to provide shared high-speed down link (transmission) channel (be called HS-DSCH, represent high-speed downlink shared channel) for use in grouped data being delivered to UE (subscriber equipment) equipment.For current DSCH, each UE equipment that can send data on HS-DSCH has associated dedicated physical channel (DPCH).DPCH is used for transporting and is used for related up link and then is used for for example power control command of other service of circuit switched voice if desired.More high data rate and quick retransmission mechanism, i.e. HARQ (mixed automatic repeat request) mechanism that is provided by Node B is provided HS-DSCH.In tentative the 5th edition enforcement, in 3GPP official's shared channel only being arranged in the down link is DSCH, re-transmission at this DSCH is provided by the RLC among the RNC (radio network controller) of UTRAN (radio link control) always, and this is a retransmission mechanism relatively slowly.Yet,, from standard, deleted DSCH owing to no longer need from the 5th edition.Agreed that similar dedicated channel (E-DCH) is used for High Speed Uplink Packet and inserts (HSUPA).Thus, as at 3GPP TS 25.309 v6.3.0 (2005-06) " FDDEnhanced Uplink; Overall description; Stage 2 (Release 6) " middle elaboration, imagined similar enhancing at up link.The concrete scene of HS-DSCH mobile process and E-DCH is respectively at 3GPP: " Technical Specification Group RAN; TR 25.931v6.2.0 (2005-06); UTRAN functions, examples on signaling procedures (Release 6) " the 7.10th and 7.20 parts in general introduction is arranged.The details of " Active Set Update (ASU) with the HS-DSCH " has been the common unsettled U.S. Provisional Application the 60/614th on September 29th, 2004 by quoting in conjunction with as a setting applying date, in No. 562 (now being No. the 11/237th, 643, U.S. Patent application) description is arranged.

RAN 2 has discussed in manuscript R2-042103 (in RAN2#44) when needing to upgrade active set simultaneously serving the enhancing of HS-DSCH cell change.RAN2 then among manuscript R2-050115 (in RAN2#45bis) discussion with this enhancing cover in the RAN2RRC standard proposal and then in manuscript R2-051203 (in RAN2#46bis) agreement CR is added to the RRC standard.

The intention of this enhancing is that SRNC can avoid carrying out two processes of separating when needing occurring active set to upgrade (ASU) and HS-DSCH cell change simultaneously; Active set is upgraded and for example the physical channel of UE is reconfigured.This may cause the service disruption that takes place owing to the parallel procedure principle, and this can stop parallel procedure simultaneously.

RAN2 reaches an agreement to the importance that strengthens, and agrees that the HS-DSCH Serving cell is changed function to be covered among the RRC: the active set renewal process.Therefore this will cause ASU and HS-DSCH cell change faster, this means littler transmission interruption or can avoid interruption fully.

Change and branch's interpolation/deletion as for Serving cell, must carry out three RNSAP/NBAP processes (RL interpolation/deletion, synchronization of radio link reconfigure with radio link and reconfigure submission) according to current standard.

Summary of the invention

The objective of the invention is in the radio network sub-system signaling, consider to occur active set renewal and the change of HS-DSCH/E-DCH Serving cell simultaneously, this means also and can in NBAP (3GPP TS 25.433 V6.6.0 (2005-06) " UTRAN Iub interfaceNode B Application Part (NBAP) signaling ") and RNSAP (3GPP TS25.423 V6.6.0 (2005-06) " UTRAN Iur interface RNSAP signaling ") standard, strengthen.

Therefore should upgrade RL and add process and RL delete procedure, thereby NBAP and RNSAP calibrate among the RRC, thereby these enhancings will make active set upgrade and the HS-DSCH/E-DCH Serving cell changes and promotes sooner.

The present invention presents required enhancing and proposes NBAP and RNSAP are calibrated in the RRC standard, therefore active set simultaneously upgrade and the HS-DSCH/E-DCH Serving cell change may in addition appearance quickly.

Advantage comprises:

-change and the process number of the RL interpolation/RL condition of deleting when triggering simultaneously in RNC strengthens the ambulant performance of HSDPA/HSUPA by reducing at the HS-DSCH/E-DCH Serving cell

-RL interpolation/HS-DSCH/E-DCH Serving cell changes not delay

-the solution that proposes do not look for novelty process and new information.

Shortcoming

-introduce in order to when RL interpolation/RL deletion condition triggers simultaneously, to carry out another option that the HS-DSCH/E-DCH Serving cell changes in RNC

Therefore the field of the invention relates to high-speed downlink packet and inserts (HSDPA) and High Speed Uplink Packet and insert the mobility of (HSUPA) and HS-DSCH/E-DCH Serving cell and change and currently only reconfigure the possible fact of process ability by the RL in Iub/Iur.

The HS-DSCH Serving cell changes and can be categorized into two kinds of different situations of definition as follows: in the Node B HS-DSCH Serving cell change and Node B between the HS-DSCH Serving cell change (note: other may scene be in the DRNS/but a HS-DSCH Serving cell changes separately do not present because with a kind of similitude be applicable in the Node B/a HS-DSCH Serving cell changes).

The HS-DSCH Serving cell changes in the Node B

When old HS-DSCH Serving cell and new HS-DSCH Serving cell exist Same joint Point BWhen middle, then the Serving cell change can be called HS-DSCH Serving cell change in the Node B.Need not that in this case HSDPA information is delivered to Node B and also need not to set up the new transmission carrying of leading to Node B.

The HS-DSCH Serving cell changes between Node B

When old HS-DSCH Serving cell and new HS-DSCH Serving cell exist Different joints Point BWhen middle, Serving cell changes can be called HS-DSCH Serving cell change between Node B.New node B does not have HSDPA information and must send this information in this case.In new node B, yet the transmission of existence carrying and therefore must set up this carrying.

At HS-DSCH Serving cell in the Node B change and Node B between HS-DSCH Serving cell situation, in 3GPP RAN3 about the ambulant current state of HSDPA:

RL adds process:

Agreed at the beginning of 2002, will not RL addsBeing used for Serving cell changes.

Seem (to select from the 2.3rd chapter of R3-020187: HS-DSCHmobility procedures) agree this point based on following argument.

A one-step process and two step processes are relatively

When active set is added radio link, can think that the sub-district of being added unlikely also becomes the sub-district that is suitable for the HS-DSCH service most immediately.Therefore, may not need with new radio link set up and to serve the HS-DSCH sub-district combined to the direct change of this new link.Summarized the example of two step processes in the 3.4th part, the radio link that this process is included in the first step adds and the service HS-DSCH cell change in second step.Have only obvious performance gain to prove the direct setting of HS-DSCH when it rationally just can be added on the radio link interpolation.

The problem that occurs is whether the principle of this two step of use process also is enough under the situation of direct-cut operation (for example switching between frequency).In the 3.3rd part of carrying out direct-cut operation at the UE that is assigned HS-DSCH, provided example.It is just enough only to use two step processes in this case in the NBAP/RNSAP signaling, wherein prepares synchronous service HS-DSCH cell change for target node b is provided with new radio link in second step in first step.This example is applicable to existing NBAP/RNSAP process.Should consider the optimization of NBAP/RNSAP signaling.

Yet on radio interface, can only handle direct-cut operation with single RRC process.When carrying out direct-cut operation at the UE that is assigned HS-DSCH, this example should be applicable to the 99th edition.

Though above-mentioned argumentation thinks that it is the same sub-district that will add that new HS-DSCH Serving cell changes, the proposal among the present invention also makes other the existing sub-district in the Node B can become the HS-DSCH Serving cell.

Be provided with by RL equally, for example can set up 2*RL and RNC which must be selected is the best RL that is used for the HS-DSCH Serving cell, and also go for RL with a kind of mechanism and add, particularly for add hard HO between the Node B of finishing with RL.

Therefore, based on above-mentioned argumentation and the reason in the 2nd chapter, described (and no matter whether consider among the 3GPP decision-making more early), also propose to strengthen RL and add to comprise the HS-DSCH service cell information.

Situation for HS-DSCH Serving cell change between Node B:

Also proposing to strengthen RL adds to comprise HS-DSCH information IE.This is added on has realized under the situation of new HS-DSCH Serving cell in having another Node B of an existing RL that the HS-DSCH Serving cell changes between Node B.Current, the HS-DSCH Serving cell that adds with while RL changes and must add and RL reconfigures process and finishes by the RL that separates.

The RL delete procedure:

Use the RF deletion still not have discussion about changing at Serving cell.

In No. 28 meeting of 3GPP TSG RAN, ratified PRC (TS25.331) CRNo 2564 (title is Including HS-DSCH serving cell change in ASU) (CR in RP-050320).Proposal among this CR is carried out the HSUPA Serving cell by the active set renewal process and is changed to become and may strengthen the ambulant performance of HSDPA by making.

Attention: identical argument goes for the E-DCH Serving cell and changes, and wherein can not carry out the HSUPA Serving cell by RL interpolation and delete procedure and change.

For the situation that HS-DSCH Serving cell between Node B changes, also propose to strengthen the RL deletion to comprise HS-DSCH information IE.This is added under the situation of new HS-DSCH Serving cell in another Node B of at least one RL that comprises the needs deletion and has realized that the HS-DSCH Serving cell changes between Node B.Current, change with the HS-DSCH Serving cell of while RL deletion and must reconfigure process by the RL deletion that separates and RL and finish.

As previously mentioned, change and branch's interpolation/deletion, in current standard, must carry out three RNSAP/NBAP processes (RL interpolation/deletion, synchronization of radio link reconfigure with radio link and reconfigure submission) for Serving cell.

The present invention proposes a kind of Iub/Iur (NBAP/RNSAP) Signaling solutionSo that RL is added process and HS-DSCH and E-DCH Serving cell to be changed combined, and in addition according to the present invention, when occurring simultaneously needing to carry out one of the change of HS-DSCH/E-DCH Serving cell and above-mentioned two processes in RNC, the RL deletion can change combined with the HS-DSCH/E-DCH Serving cell.

Add process and RL delete procedure when combined by the HS-DSCH/E-DCH Serving cell being changed with RL, RNC avoids using synchronously that (asynchronous) radio link reconfigures and the submission process, so signaling solution more produces effect in the Iub/Iub interface.

The E-DCH Serving cell that the present invention also can be used for adding with RL changes, and has also strengthened among Node B/DRNS to have/do not have the E-DCH setting that Serving cell changes.

Description of drawings

Fig. 1 shows universal mobile telecommunications system (UMTS) packet network architecture that comprises subscriber equipment (UE), UMTS terrestrial radio access network (UTRAN) and these main architectural elements of core network (CN);

The framework that Fig. 2 shows Fig. 1 is some further details of UTRAN particularly;

Fig. 3 shows in order to the active procedure of supporting change of HSDPA Serving cell and RL interpolation with according to enhancement mode process of the present invention;

Fig. 4 shows in order to the active procedure of supporting change of HSDPA Serving cell and RL deletion with according to enhancement mode process of the present invention;

Fig. 5 shows radio network sub-system (RNS), and this RNS comprises the SRNC that communicates with Node B, and this Node B communicates by wave point and subscriber equipment again;

Fig. 6 A and Fig. 6 B show together according to of the present invention, can add the cell that uses in request message or the radio link deletion request message at the radio link of new cell with interpolation;

Fig. 7 A and Fig. 7 B show together according to cell of the present invention, that can use in radio link addition response message, radio link interpolation failed message or the radio link deletion response message of the new cell with interpolation;

Fig. 8 shows the flow chart that illustrates a succession of process steps that can take place in the such network element of the service radio network controller of for example Fig. 3 or Fig. 4;

Fig. 9 shows the embodiment of the signal processor that can use in SRNC, Node B or the UE of Fig. 5;

Figure 10 shows and is used for the process carried out at subscriber equipment;

Figure 11 shows and is used for the process carried out at the such network element of Node B shown in for example Fig. 3-5.

Embodiment

Though at 3GPP and HSDPA/HSUPA particularly in addition open, will be appreciated that to the invention is not restricted to HSDPA/HSUPA or 3GPP, but be generally applicable to all radio communications.

According to the present invention, can in the 6th edition, optimize RL interpolation and RF delete procedure or their equivalent function and needing simultaneously may occur active set to upgrade and the change of HS-DSCH/E-DCH Serving cell to consider.Therefore hereinafter describe and how to upgrade radio link management process, RL interpolation process and RL delete procedure.

Fig. 3 and Fig. 4 side leftward show active procedure and show the enhancing of proposal at right-hand side, and the time that clearly illustrates the present invention and realized is saved.

RL adds (see figure 3):

Problem is to change the while when triggering when RL deletion or RL add standard and HS-DSCH/E-DCH Serving cell in RNC, RNC can not carry out that above-mentioned two RL add or one of RL delete procedure in carry out the HS-DSCH/E-DCH Serving cell and change, must promptly not be simultaneously or concurrently to reconfigure process to finish the HS-DSCH/E-DCH Serving cell and change with different timing but replace by the RL that separates.

The parallel procedure rule forbids carrying out simultaneously RL interpolation process and RL reconfigures process, and this has reduced performance.In a single day can trigger the RL delete procedure at any time, but trigger the RL deletion, RNC must wait for until it and finishing, and just allows to start RL then and reconfigures.

Therefore, shown in the left-hand side of Fig. 3, when occurring needing RL interpolation and HS-DSCH Serving cell to change simultaneously in the 5th edition RAN, SRNC must be to carry out two separation process to the mode similar than the mode of the 5th edition RRC as for example.In Iub/Iur, SRNC starts earlier in order to a RL is added to RL in the Node B and adds process and immediately start in order to carry out RL that the HS-DSCH Serving cell changes and reconfigure process (RL reconfigure preparation and RL reconfigure submission/asynchronous RL reconfigure).If the RL that adds is the HS-DSCH Serving cell, then the order of process must be an order mentioned above; Otherwise can carry out RL earlier reconfigures.From the viewpoint of RRC signaling, the order of NBAP/RNSAP process is unimportant, and be can start the PRC that also illustrates at SRNC because add RL and dispose this final result of HS-DSCH Serving cell: active set is needed before upgrading.Start Serving cell and change if RNC wants earlier to reconfigure process by RL, then the Node B communication context is to reconfigure under the state and can not trigger RL and add process in preparation.Thereby therefore postpone RL and add the performance that process reduces softer portfolio premium.From the viewpoint of NBAP standard, Node B can be refused the RL process of adding and pass until reconfiguring CFN, therefore may even reduce gain more according to enforcement in addition.

If RNC starts RL earlier and adds, the Serving cell change that then postpones the process that reconfigures by RL is finished until the RL interpolation.

In order to strengthen the ambulant performance of HSDPA mobility and HSUPA,, propose a kind ofly Serving cell to be changed with branch's interpolation/deletion become possible signaling solution simultaneously according to the present invention.This solution requirement is incorporated into RNSAP/NBAP RL with some cells (IE) to be added in request/failure and the RL removal request/response message, only as an example, and for example shown in the runic font size in Fig. 6 A, Fig. 6 B, Fig. 7 A and Fig. 7 B.For example for subdivision shown in Fig. 6 A, Fig. 6 B, Fig. 7 A and Fig. 7 B and with shown in mode, so new IE can add in the feature message definition and content that the cell that is used for NBAP communication in the 9.1st part of 3GPP TS 25.433 v6.6.0 (2005-06) describes.

With reference to Fig. 6 A and Fig. 6 B, add process for the RL that changes with Serving cell, radio link add request message 600 can for example be extended for as shown in the figure comprise shown in the cell grouping 602 of one or more sub-cell.Therefore, in order to prepare at the RL interpolation process that changes with the HS-DSCH Serving cell, RL adds request message 600 and is changed and becomes to comprise following in every one or multinomial:

-HS-DSCH?RL?ID；

-Node B begins to transmit by the RL of new interpolation the timing IE (example of IE name is HSDPA CFN) of HS-DSCH data

-HS-DSCH?RNTI

-transmit and carry bid indicator IE, transport layer address and binding ID (every HS-DSCHMAC-d stream)

(note: above-mentioned all sub-IE can for example belong to the same IE grouping that can be used for the HS-DSCH Serving cell and change (the HS-DSCH Serving cell of an example of IE group name shown in being changes information))

-for the situation that HS-DSCH Serving cell between Node B changes, also have HS-DSCH information IE, HS-DSCH RL ID, HS-DSCH RNTI and HSDPA CFN (Connection Frame Number).

CFN is " MAC-hs reservation " as the reason that IE adds in the RL interpolation request 600.If this message does not have regularly IE of this CFN, in case then Node B is answered with RL interpolation response message, the Node B of supporting MAC-hs to keep will begin to send HS-DSCH data (in the buffer of Node B) by the RL of new interpolation, and this is before SRNC carries out the active set renewal process at UE.Therefore, even Node B sends data, UE can not receive any data from the RL of new interpolation, promptly can generate the packet loss on eating dishes without rice or wine.Must avoid this problem.By CFN, SRNC makes Node B be used for beginning the timing synchronised that timing that RL by new interpolation sends the HS-DSCH data and UE use when beginning to receive data by RL.Add response message 700 (seeing Fig. 7 A and Fig. 7 B) with RL and make and answer the RL that just configuration is added in case should be noted that Node B, this be with current standard in identical behavior.

Add response message and RL adds in the failed message 702 at the RL as shown in Fig. 7 A and Fig. 7 B, can add IE (Serving cell change designator) with the whether success/success of indication required service cell change.Can add the IE of HS-DSCH information response 704 to carry transport layer address etc.Also can add sub-IE of MAC-hs replacement designator and the sub-IE of HS-DSCH RNTI, these IE only are suitable in RNSAP and do not exist in NBAP.This three IE are set when above-mentioned IE (Serving cell change designator) 704 notices " success ".When notifying " success ", above-mentioned IE (Serving cell change designator) can in message, add " reason " IE so that provide at there not being the cause for the success indication.Situation for HS-DSCH Serving cell between Node B changes also can comprise HS-DSCH information.

As above illustrating at the 6th edition enhancing according to of the present invention, SRNC can start RL and add process, and this process comprises CFN (Connection Frame Number) (CFN has indicated new HS-DSCH Serving cell when to become Serving cell) when new HS-DSCH Serving cell changes activation.When the RL interpolation is configured in the Node B with new HS-DSCH Serving cell change, SRNC need not to start RL and reconfigures (Serving cell change) process and replace and can start RRC immediately: active set is upgraded, therefore as saving (than left-hand side) in the acquisition time shown in the right-hand side of Fig. 3.

The RL that changes with the E-DCH Serving cell adds process (Fig. 6 B)

RL adds request message 600 and comprises:

-service E-DCH RL

-Node B begins to transmit by new service E-DCH RL the timing IE (for example IE E-DCH by name) of E-AGCH data

(note: above-mentioned two IE can belong to the same IE (example of IE name changes information for the E-DCH Serving cell) that can be used for the E-DCH Serving cell and change)

-for be provided with by E-DCH and the Node B of E-DCH FDD information IE and E-DPCH information IE in/an E-DCH Serving cell changes (promptly not having configuring E-DCH in Node B) (note: this also allows not to add the E-DCH that the Serving cell of process changes by RF and is provided with).

RL adds response message 700 and RL adds failed message 702

Indicate required E-DCH Serving cell whether to change success/not successful IE for-one, and when this designator is notified " success ", can comprise the E-DCH FDD DL control channel information that is used for newly serving RL and old service RL.And when this designator is notified " success ", can comprise reason IE.

-in the Node B that is provided with by E-DCH/an E-DCH Serving cell changes, and the E-DCH FDD IE of information response also can be provided.

RL deletes (see figure 4):

Enhancing in the RL delete procedure is similar to above-mentioned adds the enhancing of process to RL, in Fig. 4, illustrate the prior art process in the left side and in right diagram enhancing of the present invention.

In the 5th edition RAN, if current HS-DSCH Serving cell is the sub-district with the RL that will delete, then SRNC reconfigures (asynchronous) process as starting RL in elder generation shown in the left side.So after RL reconfigures process, change the HS-DSCH Serving cell and SRNC can start the RL delete procedure.

If the RL that will delete is not in the sub-district that is not current HS-DSCH Serving cell, then SRNC also can start these processes by other order.Also can use synchronous PL to reconfigure process in this case.

The reason of not using synchronous RL to reconfigure under first situation (RL that will delete is in the sub-district identical with the HS-DSCH Serving cell) is to delete immediately the sub-district that will delete, and when finishing the change of HS-DSCH Serving cell with CFN subsequently, in Node B, have logic error, because the HS-DSCH Serving cell remains in the sub-district that does not have RL.

In the 5th edition, also might be synchronously/asynchronous RL starts the RL deletion immediately after reconfiguring process, is not subjected to the parallel procedure rule limits because the RL delete procedure can start at any time.Even it all is possible being enabled in any time, still from the viewpoint of Node B, a process is easier to handle than two parallel procedures.Therefore propose to strengthen the RL delete procedure.

Change and branch's interpolation/deletion for Serving cell, in current standard, must carry out three RNSAP/NBAP processes (RL interpolation/deletion, synchronization of radio link reconfigure with radio link and reconfigure submission).

To add the similar mode of described mode, will the RL delete procedure that change with Serving cell be described at HS-DSCH and E-DCH to RL above at Fig. 3.

For the RL delete procedure that changes with the HS-DSCH Serving cell, RL deletion request message 604 is extended for (seeing Fig. 6 A and Fig. 6 B) and comprises the HS-DSCH RL ID of the identity of having indicated HS-DSCH RL and the timing IE (for example IE called after HSDPA CFN) that Node B is used for beginning to transmit the HS-DSCH data.Have only the RL that ought will delete regularly IE just not to be set simultaneously than current service HS-DSCH RL.It also can expand by HS-DSCH RNTI.Can add and transmit carrying bid indicator IE, transport layer address and binding ID (every HS-DSCH MAC-d stream).Above-mentioned IE can belong to can be used for the same IE grouping (example of IE name changes information for the HS-DSCH Serving cell) that the HS-DSCH Serving cell changes.For the situation that HS-DSCH Serving cell between Node B changes, can add HS-DSCH information IE, HS-DSCH RL ID, HS-DSCHRNTI and HSDPA CFN.

For RL shown in Fig. 7 A and Fig. 7 B deletion response message 710, the whether success/success of IE grouping 704 notice required service cell changes.The IE of HS-DSCH information response grouping 704 can be carried transport layer address etc.Can add the MAC-hs replacement designator IE and the HS-DSCH RNTI IE that only in RNSAP, are suitable for, because they do not exist in NBAP.This three IE when notifying " success ", above-mentioned IE group 704 are set.When above-mentioned IE group 704 (Serving cell change designators) notice " not success ", can in message, add reason IE (9.2.1.6).For the situation that HS-DSCH Serving cell between Node B changes, also can add the HS-DSCH FDD IE of information response.

For the RL delete procedure that changes with the E-DCH Serving cell, RL deletion request message 604 (seeing Fig. 7 A and Fig. 7 B) comprises that service E-DCH RL IE and Node B begin to transmit by new service E-DCH RL the IE of timing (for example E-DCH CFN) of E-AGCH data.These two IE can belong to the same IE 602 (example of IE name changes information for the E-DCH Serving cell) that is used for the E-DCH Serving cell and changes.For in the Node B that E-DCH is provided with/an E-DCH Serving cell changes (promptly not having configuring E-DCH in Node B), also can add E-DCH FDD information IE 620 and E-DPCH information IE (note: this also allows not to add the E-DCH that the Serving cell of process changes by RL and is provided with).RL deletion response message 710 (Fig. 7 B) can comprise in order to indicate required E-DCH Serving cell whether to change success/not successful IE 720.This designator notice " success " can comprise the E-DCH FDD DL control channel information IE that is used for newly serving RL and old service RL, and when this designator is notified " success ", can comprise reason IE as shown in Fig. 7 B.For in the Node B that is provided with by E-DCH/an E-DCH Serving cell changes, and the E-DCH FDD IE of information response also can be provided.

Fig. 5 shows RNS and comprises the SRNC that is connected to the CN (not shown) and is connected to Node B by Iub interface by the Iu interface.Node B is connected to UE by the Uu interface again.Show SRNC and have first input/output interface that is connected to the Iu interface and second input/output interface that is connected to Iub interface.Signal processor in SRNC is connected to first and second input/output interfaces of SRNC.Similarly, show Node B and have first input/output interface that is connected to Iub interface and second input/output interface that is connected to the Uu interface.Signal processor in Node B is connected to first and second input/output interfaces of Node B.Show UE and have the input/output interface that is connected to signal processor in Uu interface and the UE.

The QoS of the signal processor control UE of SRNC.The switching of signal processor (HO) controlled function is measured and is detected and need trigger Iub/Iur radio link management process (RL setting, RL interpolation, RL deletion, RL reconfigure) based on provided for radio resources management (RRM) rule from the UE reception of neighboring cell.The signal processor of SRNC also is responsible for judgement HS-DSCH/E-DCH Serving cell and when is needed to change this sub-district.It can be adjudicated with the method for synchronization or finish the HS-DSCH/E-DCH Serving cell in asynchronous mode and change.

The signal processor of Node B be responsible for sending the HSDPA/E-DCH data to radio interface/receive the HSDPA/E-DCH data from radio interface.It also gives UE with the HSDPA/E-DCH resource allocation.It receives the HSDPA data and is responsible for the HSDPA data dispatch to radio interface from Iub.It is carried out when it handles the change of HS-DSCH Serving cell in the SRNC order according to this.It carries out similar E-DCH process.It is carried out by SRNC command process RL management process the time according to this.

The signal processor of UE is measured the parameter relevant with neighbor cell and measurement report message is sent to its SRNC.It is carried out when being received and handling active set renewal (ASU) message by the SRNC order according to this.It is carried out when being received and handling the change of HS-DSCH/E-DCH Serving cell by the SRNC order according to this.

Signal processor in UE and SRNC is followed at 3GPP TS 25.331 v6.6.0 (2005-06) " Technical Specification Group Radio Access Network; RadioResource Control (RRC); Protocol Specification (the 6th edition) " the middle RRC process of describing.PRC state and state-transition be summarized in shown in its 7th clause (protocol status) and according to as the measuring control information that in the 8.4th (measuring process) and the sub-clause of 14.4 (measuring business volumes), specifies the performance of measuring process is described.In view of the above, the RRC measurement report of the signal processor of the UE of Fig. 5 preparation Fig. 3 and Fig. 4 and via its input-output apparatus this report is sent to Node B and this report sends to SRNC by Iub interface from Node B thus by the Uu interface.This has description measurement report in the 8.4.2 clause of TS 25.331, this clause is clear specifically to transmit it on up link DCCH when satisfying the reporting standards of storage in variable " is measured sign " for any ongoing traffic measurement of just carrying out among the UE or UE location survey.Concrete measurement function has description in the 14th clause of TS 25.331.In measuring the control messages (not shown), which incident UTRAN notice UE should trigger measurement report.Listed incident is the tool box, and UTRAN can select handover evaluation function or the needed reporting event of other radio network functionality implemented from this tool box.SRNC carries out in signal processor in order to determine whether to need to add the process of radio link." the Technical Specification Group RAN that sees 3GPP TR 25.931 v6.2.0 (2005-06); UTRAN functions, examples on signaling procedures (Release 6) ".If like this, then after carrying out following process, the active set updating message sends to UE and is used for adding, replacing or deletion radio link (seeing the description of the 10.2.1 clause of TS 25.331 v6.6.0 (2005-06) about the active set updating message) in the active set of UE by UTRAN from SRNC via Node B.

The action in the Node B when receiving enhancement mode RL interpolation request message of the right-hand side of Fig. 3 will be described in now.At first, RL adds request message 600 and is enhanced to as shown in Fig. 6 A comprises fresh information 602 that the new HS-DSCH Serving cell that identified with HS-PDSCH RL ID is relevant and about new RL and the identical information of information that specify in the 99th edition.The RL of Fig. 6 A adds request message 600 also can comprise Connection Frame Number (CFN).Add request message 600 in response to RL, Node B is added new RL among the NBCC (Node B communication context) to earlier.If RL adds request message 600 and comprises HS-PDSCH RLID, HS-DSCH RNTI and indicated and will when activate the CFN of new HS-DSCH Serving cell, the then new configuration of Node B preparation and add 700 couples of SRNC of response message with the enhancement mode RL of Fig. 7 A and give a response.Node B activates then at RL adds the new HS-DSCH Serving cell among the contained CFN in the request message 600.Do not contain CFN if RL adds request message 600, then Node B activates the change of HS-DSCH Serving cell after new RL being covered among the NBCC.If the new RL in the RL interpolation request message 600 is in the different sub-district of new HS-DSCH Serving cell, then can in NBCC, add RL and the change of HS-DSCH Serving cell independently of each other and to finish by the concrete order of implementing defined.Except using the suitable new IE shown in Fig. 6 B, the E-DCH process is similar.

With reference to Fig. 4, the action of carrying out in the Node B will be described now when receiving enhancement mode RL deletion request message.Enhancement mode RL deletion request message 710 still also comprises as be expressed as the new IE of the sign HS-DSCH Serving cell of HS-PDSCH RL ID in the IE/ of Fig. 6 A group 602 as comprise the RL that will delete in the 99th edition old cell.In response, Node B is from the NBCC deletion first request RL.If RL deletion request message 604 comprises HS-PDSCH RL ID, HS-DSCH RNTI and indicated and will when activate the CFN of new HS-DSCH Serving cell, then the Node B preparation is new disposes and gives a response with the 710 couples of SRNC of the RL of enhancement mode as shown in Figure 7A deletion response message that are added with the new cell that is suitable for HS-DSCH.Node B activates then at RL adds the new HS-DSCH Serving cell among the contained CFN in the request message.If the RL deletion request message does not contain CFN, then Node B is activating the change of HS-DSCH Serving cell after NBCC deletion RL.Can finish RL deletion and the change of HS-DSCH Serving cell according to the concrete order of wishing in force.On suitably new IE 720 shown in use Fig. 7 B, the E-DCH process is similar.

Fig. 8 is the flow chart of explanation a succession of process steps that can take place in the such network element of the service radio network controller (SRNC) of for example Fig. 3 or Fig. 4.Shown in step can be encoded into the computer-executable code of writing with computer programming language.Such computer code can be stored in the such read-only memory of ROM as shown in Figure 9 900 in the signal processor 902.Such signal processor can for example be used to realize the process steps shown in Fig. 8 in the SRNC of Fig. 5.Data, address and the control bus 904 of the various assemblies that the miscellaneous equipment that comprising in such signal processor 902 is used for interconnecting represents prevailingly such as but not limited to CPU 906, random access memory 908, clock 910, input-output apparatus 912 and with label 914 is such.CPU 906 is carried out the coded command that is stored on the ROM 900, the result and the result of while storage intermediate computations in RAM 908.RAM 908 also can be used for storing the measurement report that receives from UE, CPU 906 can be with reference to this measurement report so that realize the coded command of storage on the ROM 900, and be used for being organized in the RL that sends on the lines 600 of Fig. 3 and add the RL deletion request message that sends on request message or the lines in Fig. 4 604.Get back to Fig. 8, after in step 800, entering, carry out step 802 to receive measurement report from UE shown in Fig. 3 and Fig. 4.Assessment measurement report in step 804 and in step 806 about whether needing radio link to add or the radio link delete procedure is made judgement.Decision steps 808 need to determine whether such message, and if desired, then establishment and send suitable message to Node B in step 810 is for example shown in the RL deletion request message on the lines 604 among the RL on the lines 600 of Fig. 3 interpolation request message or Fig. 4.SRNC is then as wait-for-response as shown in the decision steps 812, wherein in case determine to have received response, with regard to execution in step 814 with actual reception and handle as for example respectively the RL shown on the lines among Fig. 3 and Fig. 4 700 and 710 add response message or RL deletion response message.SRNC is then as for example assessing the message that is received as shown in the step 816.In step 818, whether successfully made definite about request.If failure cause is not then checked in success in step 820.If success is then returned in step 822.If not need to determine RL to add or deletion, then also can be directly return to step 822 from decision steps 808.

Referring now to Figure 10, show according to the process carried out at subscriber equipment of being used for of the present invention by flow chart.After in step 1000, entering, carry out forwarding step 1002 to send measurement report shown in Fig. 3 and Fig. 4 from subscriber equipment to SRNC.After a period of time, subscriber equipment as shown in the step 1004 from the corresponding active set updating message of active set updating message as shown in SRNC reception and Fig. 3 and Fig. 4.Subscriber equipment upgrades active set then and subsequently as receiving the HSDPA data from new sub-district as shown in the step 1008, is after this returning shown in the step 1010 in step 1006.

Referring now to Figure 11, show and be used for the process carried out at for example such network element of Node B shown in Fig. 3-Fig. 5.After entering in step 1100, execution in step 1102 is added message or radio link deletion message to receive radio link from another such network element of the SRNC of for example Fig. 3-Fig. 5.Such signal for example illustrates by signal on the lines among Fig. 3 600 or the signal on the lines among Fig. 4 604 in Fig. 3 and Fig. 4.Node B is as preparing response message assessing the message that is received as shown in the step 1104 in step 1106.Node B is then as beaming back as at the signal on the lines among Fig. 3 700 or the radio link addition response message shown in the signal on the lines among Fig. 4 710 or radio link deletion response message to SRNC shown in the step 1108 among Figure 11.Returning in the step 1110 as shown in Figure 11 then.

Though illustrate and described the present invention, will be appreciated that many other embodiment are possible within the scope of the appended claims with reference to its specific embodiment.

Claims

1. one kind is used for the method carried out at network element, comprising:

Receive measurement report message from subscriber equipment; And

Radio link is added request message be provided to another network element as request message, wherein said radio link adds request message and comprises: the cell that comprises radio link identities, and comprise that the high-speed downlink shared channel Serving cell changes the cell of information, and described radio link adds request message and comprises the cell that identifies Connection Frame Number alternatively, and described Connection Frame Number comprises that high-speed data packets inserts Connection Frame Number.

2. method according to claim 1, wherein said radio link identities are the radio link identities of High-Speed Physical Downlink Shared Channel.

3. method according to claim 1, wherein said radio link are added request message and are comprised that identification service strengthens the optional cell of dedicated channel radio link.

4. one kind is used for the method carried out at network element, comprising:

Receive radio link from another network element and add request message, wherein said radio link adds request message and comprises: the cell that comprises radio link identities, and comprise that the high-speed downlink shared channel Serving cell changes the cell of information, and described radio link adds request message and comprises the cell that identifies Connection Frame Number alternatively, and described Connection Frame Number comprises that high-speed data packets inserts Connection Frame Number; And

Radio link addition response message is provided to described another network element.

5. method according to claim 4, wherein said radio link addition response message comprise the cell of identification service cell change response cell, and described Serving cell changes success or the failure that the response cell has indicated Serving cell to change.

6. method according to claim 4, wherein said radio link addition response message comprise the cell of identification service cell change response cell.

7. method according to claim 4, wherein said radio link addition response message comprises the cell of having indicated the medium access control designator.

8. method according to claim 4, wherein said radio link addition response message comprises the cell of having indicated the radio net temporary identifier.

9. method according to claim 4, wherein said radio link addition response message comprise the cell of the control channel information that has identified described service enhancing dedicated channel radio uplink.

10. one kind is used for the method carried out at subscriber equipment, comprising:

Measurement report with information relevant with neighbor cell is provided to network element; And

Receive the active set updating message from described network element, described active set updating message comprises the information relevant with Connection Frame Number alternatively, the wherein said information relevant with Connection Frame Number sends to another network element from described network element alternatively in radio link interpolation request message, and wherein said another network element is used for by radio and described communications of user equipment, wherein said radio link adds request message and comprises: the cell that comprises radio link identities, and comprise that the high-speed downlink shared channel Serving cell changes the cell of information, and described radio link adds request message and comprises the cell that identifies Connection Frame Number alternatively, and described Connection Frame Number comprises that high-speed data packets inserts Connection Frame Number.

11. a device that is used to improve mobile process comprises:

Receiver is in response to the measurement report message from subscriber equipment; And

Transmitter, be used for that radio link is added request message and be provided to another device as request message, wherein said radio link adds request message and comprises: the cell that comprises radio link identities, and comprise that the high-speed downlink shared channel Serving cell changes the cell of information, and described radio link adds request message and comprises the cell that identifies Connection Frame Number alternatively, and described Connection Frame Number comprises that high-speed data packets inserts Connection Frame Number.

12. device according to claim 11, wherein said radio link identities are the radio link identities of High-Speed Physical Downlink Shared Channel.

13. adding request message, device according to claim 11, wherein said radio link comprise that identification service strengthens the optional cell of dedicated channel radio link.

14. device according to claim 11, further comprise in response to device from the radio link addition response message of described another device, be used for providing the active set updating message to subscriber equipment, described active set updating message comprises the Connection Frame Number as the cell of described active set updating message.

15. a device that is used to improve mobile process comprises:

Receiver, add request message in response to radio link from another device, wherein said radio link adds request message and comprises: the cell that comprises radio link identities, and comprise that the high-speed downlink shared channel Serving cell changes the cell of information, and described radio link adds request message and comprises the cell that identifies Connection Frame Number alternatively, and described Connection Frame Number comprises that high-speed data packets inserts Connection Frame Number; And

Transmitter is used for radio link addition response message is provided to described another device.

16. device according to claim 15, wherein said radio link addition response message comprise the cell of identification service cell change response cell, described Serving cell changes success or the failure that the response cell has indicated Serving cell to change.

17. device according to claim 15, wherein said radio link addition response message comprise the cell of identification service cell change response cell.

18. device according to claim 15, wherein said radio link addition response message comprises the cell of having indicated the medium access control designator.

19. device according to claim 15, wherein said radio link addition response message comprises the cell of having indicated the radio net temporary identifier.

20. comprising, device according to claim 15, wherein said radio link addition response message identified the cell that described service strengthens the control channel information of dedicated channel radio uplink.

21. device according to claim 15, wherein subscriber equipment can use described Connection Frame Number to receive data from new sub-district.

22. a device that is used to improve mobile process comprises:

Be used for receiving the device of measurement report message from subscriber equipment; And

Be used for providing radio link to add the device of request message to another device, wherein said radio link adds request message and comprises: the cell that comprises radio link identities, and comprise that the high-speed downlink shared channel Serving cell changes the cell of information, and described radio link adds request message and comprises the cell that identifies Connection Frame Number alternatively, and described Connection Frame Number comprises that high-speed data packets inserts Connection Frame Number.

23. a system that is used to improve mobile process comprises:

Subscriber equipment is used to provide the measurement report with information relevant with the neighbor cell of described system and is used to receive the active set updating message that comprises the information relevant with Connection Frame Number alternatively;

First network element, be used for described active set updating message being provided and being used to provide the radio link that comprises the described information relevant alternatively to add request message in response to described measurement report with Connection Frame Number to described subscriber equipment, wherein said radio link adds request message and comprises: comprise the cell of radio link identities, and comprise that the high-speed downlink shared channel Serving cell changes the cell of information; And

Second network element adds request message in response to described radio link, is used for correspondingly radio link addition response message being provided to described first network element.

24. system according to claim 23, wherein said first network element is used to provide described active set updating message equally in response to described radio link addition response message.