CN101742553B - Processing method and device during service cell switching - Google Patents
Processing method and device during service cell switching Download PDFInfo
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Abstract
The invention discloses a processing method during cell switching, which comprises the following steps that: an RNC sends a wireless link establishment request message or a wireless link increase request message to a target Node B when determining a possibility of performing H-SCC switching, and updates an activated set between the RNC and UE after receiving a corresponding wireless link establishment response message or a corresponding wireless link increase response message returned by the target Node B. The invention also discloses a processing device during the cell switching. The method and the device save ground bandwidth resources, and reduce data processing expenses of the RNC and the Node B.
Description
Technical field
The present invention relates to the Serving cell handoff technique, relate in particular to processing method and device in a kind of Serving cell switching.
Background technology
Third generation partner program (3GPP; 3rd Generation Partnership Project) released version 8 (R8) is found with assessment through high speed downlink packet being inserted (HSDPA, High Speed Downlink PacketAccess) cell change Reliability Analysis, because at current use high-speed downlink shared channel (HS-DSCH; High Speed Downlink Shared Channel) in the Serving cell handoff procedure; Be used to indicate the reallocation message that said Serving cell switches to send to UE from the source Serving cell of terminal UE, at this moment, if source Serving cell signal strength signal intensity declines fast; For example; Under downtown area or valley environment, or under the situation of UE high-speed mobile, then UE carries out the reliability that Serving cell switches and will reduce, thereby causes the high cutting off rate of UE.Simultaneously; Present existing Serving cell handoff procedure can cause the service disconnection of long period; Reduced the user experience that the speech business (VOIP, Voice Over IP) that is carried on the IP perhaps is carried on the professional real time business such as (CS Over HSPA) in CS territory on the HSPA.
In order to address the above problem; Draft the scheme of introducing " change of enhancement mode HS-DSCH Serving cell "; Be also referred to as H-SCC, that is: after UE reports the measurement report about the 1A incident, set up process and synchronised radio link reprovision set-up procedure and activating set updating process through Radio Link; Foundation has the Radio Link of HS-DSCH attribute, and the relevant configuration information of this Radio Link is sent to target BS (Target Node B) and UE; When follow-up receive this UE about the measurement report of 1D incident the time; Radio network controller (RNC) carries out switch decision; Like court verdict is that UE need carry out the switching of Serving cell; Then RNC need not to issue once more configuration signal, only needs to carry out new configuration as soon as possible through target Node B notice UE and gets final product.The concrete steps flow process is as shown in Figure 1, comprising:
Step 101:UE reports the measurement report about the 1A incident to RNC; RNC is according to the ability of type of service, said measurement report and UE; Judge when having the possibility of carrying out the H-SCC handover operation that RNC sends Radio Link to target Node B and sets up request (Radio Link Setup Request) message or Radio Link increase request (Radio Link Addition Request) message.
Wherein, According to 3GPP TS 25.433 agreements; If there has been the NodeB communication context (Node B Communication Context) of this UE among the Node B; Then send wireless link increasing request message to target Node B, otherwise, send Radio Link to target Node B and set up request message.
Step 102: after target Node B sets up the resource allocation of Radio Link, return corresponding Radio Link foundation or increase response message.
Wherein, RNC sends Radio Link and sets up request message in the step 101, and then to set up successful response message be that Radio Link is set up response (Radio Link SetupResponse) message to the said Radio Link that returns of target Node B; RNC sends wireless link increasing request message, and then to set up successful response message be that Radio Link increases response (Radio Link AdditionResponse) message to the said Radio Link that returns of target Node B.
Step 103:RNC sends the synchronised radio link reprovision to target Node B and prepares (SynchronisedRadio Link Reconfiguration Preparation) message, and notification target Node B carries out wireless link reconfigured preparation.
Step 104:Node B receives said reprovision and prepares message, corresponding synchronised radio link reprovision ready (the Synchronised Radio Link Reconfiguration Ready) message of returning.
Step 105:RNC issues Uu mouth activating set updating (Activeset Update) message to UE, comprises the pre-configured parameter that increases Radio Link in the Active Set newly in the said message; After UE receives this message, accept said pre-configured parameter and carry out the renewal of Active Set, return activating set updating and accomplish (ActivesetUpdate Completement) message.
Wherein, can step 105 be called the activating set updating process.
Step 106:UE reports the measurement report about the 1D incident; Whether RNC judgement UE carries out the switching of Serving cell; When court verdict when switching; Submit to (Synchronised Radio Link Reconfiguration Commit) message informing Node B to go up at High-Speed Shared Control Channel (HS-SCCH) through the synchronised radio link reprovision and issue switching command to UE, UE carries out the H-SCC handover operation with notice.
Wherein, when the executive mode of H-SCC was the method for synchronization, said synchronised radio link reprovision was submitted in the message and is carried Connection Frame Number (CFN, Connection Frame Number); When the executive mode of H-SCC is asynchronous system, do not carry in the then said message.Said CFN is used to notify Node B to carry out wireless link reconfigured time point.
From existing Serving cell changing method shown in Figure 1; The present inventor finds to carry out at needs the area of H-SCC; Every increase by one wireless links needs RNC after the 1A incident, to initiate Radio Link earlier and sets up perhaps Radio Link increase process, initiates synchronised radio link reprovision set-up procedure again; Frequent like this interacting message will cause the anxiety of Iub mouth ground bandwidth, also increase the data processing expense of equipment such as RNC and Node B simultaneously.
Summary of the invention
In view of this, the technical problem that the present invention will solve is, the processing method and the device of a kind of Serving cell in switching is provided, and wears wide resource frugally, reduces the data processing expense of RNC and Node B.
For this reason, the embodiment of the invention adopts following technical scheme:
The invention provides the processing method in a kind of Serving cell switching, this method comprises:
When RNC confirms to have the possibility of carrying out enhancement mode HS-DSCH Serving cell change H-SCC handover operation; Send Radio Link to target BS Node B and set up request or wireless link increasing request message; And receive after target Node B returns corresponding Radio Link and set up or increase response message, promptly carry out and terminal UE between the activating set updating process.
The present invention also provides the processing unit in a kind of Serving cell switching, and this device comprises: data reception module, H-SCC judging module, message generating module and data transmission blocks; Wherein,
Data reception module is used to receive UE or Node B data sent information;
The H-SCC judging module, be used for measurement report that data reception module receives about the 1A incident after, whether judgement has the possibility of carrying out the H-SCC handover operation;
Message generating module is used for when the judgement of H-SCC judging module has the possibility of carrying out the H-SCC handover operation, generating Radio Link and setting up request message or wireless link increasing request message, sends to UE through data transmission blocks; Also be used for data reception module and receive after Radio Link that UE returns sets up or increase response message, generate activating set updating message, send to UE through data transmission blocks;
Data transmission blocks is used for the corresponding UE of sending to of message that message generating module is generated.
Technique effect analysis for technique scheme is following:
In the Serving cell handoff procedure; Directly utilize Radio Link foundation or increase process to set up the Radio Link that possesses the HS-DSCH attribute; Omitted and carried out the process that the synchronised radio link reprovision is prepared between RNC and the target Node B; Thereby reduced the information interaction between RNC and the Node B, practiced thrift the data processing expense of ground bandwidth resources and RNC and Node B.
Description of drawings
Fig. 1 is a prior art Serving cell changing method schematic flow sheet;
Fig. 2 is an embodiment of the invention Serving cell changing method schematic flow sheet;
Fig. 3 is an embodiment of the invention Serving cell switching device shifter structural representation.
Embodiment
Processing method during embodiment of the invention Serving cell switches mainly comprises the steps:
When RNC confirms to have the possibility of carrying out the H-SCC handover operation; Send Radio Link to target Node B and set up request or wireless link increasing request message; And receive after target Node B returns corresponding Radio Link and set up or increase response message, promptly carry out and UE between the activating set updating process.
Below, through specific embodiment be described with reference to the accompanying drawings Serving cell of the present invention switch in the realization of processing method and device.
Fig. 2 is embodiment of the invention cell switching method schematic flow sheet, and is as shown in Figure 2, and this method comprises:
Step 201:UE reports the measurement report about the 1A incident to RNC; RNC is according to the ability of type of service, said measurement report and UE; Judge follow-up when having the possibility of carrying out the H-SCC handover operation; RNC sends Radio Link to target Node B and sets up request message or wireless link increasing request message, sets up the Radio Link with HS-DSCH attribute with request.
Step 202: target Node B receives said message, for after the Radio Link of being set up carries out corresponding resource allocation, returns corresponding Radio Link and sets up or increase response message.
Wherein, RNC sends Radio Link and sets up request message in the step 201, and then to set up successful response message be that Radio Link is set up response (Radio Link SetupResponse) message to the said Radio Link that returns of target Node B; RNC sends wireless link increasing request message, and then to set up successful response message be that Radio Link increases response (Radio Link AdditionResponse) message to the said Radio Link that returns of target Node B.
Here; After target Node B returns corresponding Radio Link foundation or increases response message; Omitted the synchronised radio link reprovision set-up procedure between the RNC and target Node B in the prior art, reason is: according to 25433 agreements, Radio Link is set up the cell in request or the wireless link increasing request message; All cells in the preparation of synchronised radio link reprovision described in the prior art message have been comprised; Therefore, with Radio Link set up or increase process and synchronised radio link reprovision set-up procedure in all cells, merge to that Radio Link is set up or this process of increase process in get final product.
Step 203:RNC issues Uu mouth activating set updating (Activeset Update) message to UE, comprises the pre-configured parameter of newly setting up Radio Link in the Active Set in the said message; After UE receives this message, accept said pre-configured parameter and carry out the renewal of Active Set, return activating set updating and accomplish (ActivesetUpdate Completement) message.
Step 204:UE reports the measurement report about the 1D incident; When carrying out the switching of Serving cell according to said measurement report judgement by RNC; Notification target Node B issues switching command to UE on HS-SCCH, said switching command is used to notify UE to carry out the handover operation of follow-up service sub-district.
Wherein, when RNC notifies Node B in this step, can in the already present message of prior art, carry the handover information of required notice,, thereby accomplish said notice as the H-SCC handoff notification message.The existing message of at this moment, carrying said handover information meets the following conditions:
1) this message is the message that RNC mails to Node B, and unidirectional message preferably, that is: need not respond Node B and return response message, to save the Iub port band width;
2) this message exists redundant field perhaps can replace the field of usefulness; To be used for carrying Node B communication context sign (Communication Context ID), Radio Link sign (RL ID), CFN cells such as (carry when the executive mode of HS-SCCH is the method for synchronization, be used to notify Node B to carry out the time point that Serving cell switches);
3) this message can be provided with special identifier; Letting the target Node B that receives this message identify this message is special H-SCC handoff notification message; For example; This message has extended field, thereby special identifier can be set in extended field, is said special H-SCC handoff notification message to identify this message.
The message that satisfies above-mentioned condition has said synchronised radio link reprovision of the prior art to submit message to, or other Iub mouth chain of command message, like Radio Link activation command (Radio Link ActivationCommand) etc.Except cited of the prior art said message, can also use other message as the H-SCC handoff notification message, for example set up new message etc., as long as this message satisfies above-mentioned three conditions, repeat no more here.
Below, when using the synchronised radio link reprovision to submit message or Radio Link activation command as said H-SCC handoff notification message in this step, the extension process of said message is elaborated respectively.
1) submit to message to carry out extension process to said synchronised radio link reprovision, with as said H-SCC handoff notification message
Synchronised radio link reprovision of the prior art submits to the structure of message to comprise: type of message (Message type), Transaction Identifier (Transaction ID), Node B Communication ContextID, CFN and activation type sequence information cells such as (Active Pattern Sequence Information).
Owing to comprised Node B Communication Context ID and CFN two cells in this information, therefore, only being required to be this information increases the expansion cell to carry RL ID and special identifier.For example, the expansion cell is set to totally 8 bits (bit), and wherein, preceding 3 bit are changed to " 1 " entirely, are the H-SCC handoff notification message to let Node B identify this message, and back 5 bit are used for carrying RL ID.
2) the Radio Link activation command is carried out extension process, as said H-SCC handoff notification message
The structure of the activation command of Radio Link described in the prior art comprises cells such as Message Type, TransactionID, Node B Communication Context ID and Delayed Activation Information.And further comprise in the Delayed Activation Information cell: RL ID and DelayedActivation Update cell.
In this message, Node B Communication Context ID and RL ID possess.If the method for synchronization, CFN can carry through the Activation CFN in the Delayed Activation Update cell.Difference is: in order to let Node B identify the handoff notification message that this message is H-SCC; Rather than Radio Link activation command of the prior art; Can increase the expansion cell, in this expansion cell, special identifier is set, for example; Complete " 1 " is set, and is the H-SCC handoff notification message to identify this message.
The Serving cell changing method that the embodiment of the invention shown in Figure 2 provided; Omitted the synchronised radio link reprovision set-up procedure between RNC and the target Node B; Thereby reduce information interaction between the two and carry out the expense that information data is handled, increased Iub mouth ground bandwidth; In addition, when the Serving cell change took place, RNC can carry out the H-SCC handover operation through the H-SCC handoff notification message notification target Node B that carries cells such as Node B Communication Context ID, RL ID.Said H-SCC handoff notification message can be submitted message or Iub mouth chain of command message etc. to for the synchronised radio link reprovision that carries out after the extension process.
Fig. 3 is the processing unit structural representation in the switching of embodiment of the invention Serving cell, and this device is generally positioned among the RNC.As shown in Figure 3, this device comprises: data reception module 310, H-SCC judging module 320, switch decision module 330, message generating module 340 and data transmission blocks 350; Wherein,
Data reception module 310 is used to receive UE or Node B data sent.
Wherein said data comprise: the measurement report about the 1A incident that UE sends, the Radio Link that returns about the measurement report and the UE of 1D incident are set up response message, Radio Link increases response message and activating set updating is accomplished message etc.
H-SCC judging module 320, the ability of the measurement report about the 1A incident, type of service and the UE that is used for receiving etc. according to data reception module 310, whether judgement has the possibility of carrying out the H-SCC handover operation.
Switch decision module 330, after being used for data reception module 310 and receiving the measurement report about the 1D incident that UE sends, the Serving cell whether judgement carries out this UE switches.
Message generating module 340 is used for when 320 judgements of H-SCC judging module have the possibility of carrying out the H-SCC handover operation, generating Radio Link and setting up request message or wireless link increasing request message, sends to UE through data transmission blocks 350; Also be used for data reception module 310 and receive after Radio Link that UE returns sets up or increase response message, generate activating set updating message, send to UE through data transmission blocks 350; Also be used for when switch decision module 330 is confirmed to carry out the Serving cell switching of UE; The H-SCC handoff notification message of cells such as Node B Communication Context ID, RL ID is carried in generation, and sends to the required target Node B that switches to of UE through data transmission blocks 350.
Wherein, when adopting the method for synchronization, also will carry CFN in the said H-SCC handoff notification message, therefore, handoff notification message generation module 330 also is used for said CFN is made an addition to said H-SCC handoff notification message.
Message generating module 340 generate said H-SCC handoff notification message specifically can for: the synchronised radio link reprovision is submitted to existing message such as message or Radio Link activation command carry out extension process, is made it as said H-SCC handoff notification message.
Data transmission blocks 350 is used for the corresponding UE of sending to of message of message generating module 340 generations or the target Node B of UE.
Processing unit during switch the sub-district that the embodiment of the invention shown in Figure 3 provided; Omit RNC and sent the function that the synchronised radio link reprovision is prepared message and received the ready message of synchronised radio link reprovision; Thereby the information interaction and the RNC that reduce between RNC and the Node B carry out the expense that information data is handled, and have increased Iub mouth ground bandwidth; In addition; When judgement UE carries out the Serving cell switching; Message generating module 340 can generate the H-SCC handoff notification message of cells such as carrying Node B Communication Context ID, RL ID; For example submit to message to carry out after the extension process synchronised radio link reprovision of the prior art as the H-SCC handoff notification message; Perhaps, carry out after the extension process as the H-SCC handoff notification message Iub mouth chain of command message in the prior art etc., carry out the H-SCC handover operation with notification target Node B.
The embodiment of the invention is applicable to WCDMA (comprising TDD, FDD) system and TD-SCDMA system.In addition, also be applicable to the Iur mouth.
One of ordinary skill in the art will appreciate that; The process of processing method can be accomplished through the relevant hardware of program command during realization the invention described above embodiment Serving cell switched; Described program can be stored in the read/write memory medium, and this program when carrying out the corresponding step in the said method.Described storage medium can be like ROM/RAM, magnetic disc, CD etc.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (11)
1. the processing method during a Serving cell switches is characterized in that this method comprises:
When radio network controller (RNC) confirms to have the possibility of carrying out enhancement mode HS-DSCH Serving cell change H-SCC handover operation; Send Radio Link to target BS Node B and set up request or wireless link increasing request message; And receive after target Node B returns corresponding Radio Link and set up or increase response message, promptly carry out and terminal UE between the activating set updating process;
This method further comprises:
After accomplishing activating set updating; When RNC confirms to carry out the Serving cell switching of UE; Use H-SCC handoff notification message notification target Node B on high-speed shared control channel HS-SCCH, to issue switching command to UE, said switching command is used to notify UE to carry out the H-SCC handover operation;
Said H-SCC handoff notification message is the message that meets the following conditions: this message is the message that RNC mails to Node B; This message exists redundant field maybe can replace the field of usefulness; This message can be provided with special identifier.
2. method according to claim 1 is characterized in that, accomplishes after the activating set updating, and RNC confirms to carry out before the Serving cell switching of UE, and this method further comprises:
RNC receives the measurement report about the 1D incident that UE reports; Said measurement report about the 1D incident is used for determining whether to carry out the foundation that the UE Serving cell switches as RNC.
3. method according to claim 1 and 2 is characterized in that, RNC confirms follow-uply have before the possibility of carrying out the H-SCC handover operation, and this method further comprises:
RNC receives the measurement report about the 1A incident that UE reports; Said measurement report about the 1A incident is used for determining whether to have as RNC the foundation of H-SCC handover operation possibility.
4. method according to claim 2 is characterized in that, said H-SCC handoff notification message is carried Node B communication context sign Node B Communication Context ID, Radio Link sign RL ID cell.
5. method according to claim 4 is characterized in that, when H-SCC switched to the method for synchronization, said H-SCC handoff notification message was also carried Connection Frame Number CFN.
6. method according to claim 4 is characterized in that, said H-SCC handoff notification message is specially: the Radio Link activation command or the synchronised radio link reprovision that carry out after the extension process are submitted message to.
7. method according to claim 6; It is characterized in that; The extension process of Radio Link activation command is specially: in said Radio Link activation command, increase extended field, it is current as the H-SCC handoff notification message that said extended field is used to identify this Radio Link activation command.
8. method according to claim 6; It is characterized in that; The synchronised radio link reprovision submits to the extension process of message to be specially: submitting at said synchronised radio link reprovision increases the expansion cell in the message, and said expansion cell is used to carry RL ID and sign synchronised radio link reprovision submits to message current as the H-SCC handoff notification message.
9. the processing unit during a Serving cell switches is characterized in that this device comprises: data reception module, H-SCC judging module, message generating module and data transmission blocks; Wherein,
Data reception module is used to receive UE or Node B data sent information;
The H-SCC judging module, be used for measurement report that data reception module receives about the 1A incident after, whether judgement has the possibility of carrying out the H-SCC handover operation;
Message generating module is used for when the judgement of H-SCC judging module has the possibility of carrying out the H-SCC handover operation, generating Radio Link and setting up request message or wireless link increasing request message, sends to UE through data transmission blocks; Also be used for data reception module and receive after Radio Link that UE returns sets up or increase response message, generate activating set updating message, send to UE through data transmission blocks;
Data transmission blocks is used for the corresponding UE of sending to of message that message generating module is generated.
10. device according to claim 9 is characterized in that, this device further comprises:
The switch decision module after being used for data reception module and receiving the measurement report about the 1D incident that UE sends, determines whether that the Serving cell that carries out this UE switches;
Data reception module is further used for: receive the measurement report about the 1D incident that UE reports;
Data transmission blocks is further used for: the said H-SCC handoff notification message that message generating module is generated sends to corresponding N ode B;
Message generating module is further used for: when the switch decision module is confirmed to carry out the Serving cell switching of UE; Generate the H-SCC handoff notification message of carrying Node B Communication Context ID, RL ID cell at least, and send to the target Node B of UE through data transmission blocks.
11. device according to claim 10 is characterized in that, when H-SCC switches to the method for synchronization, also carries CFN in the H-SCC handoff notification message that message generating module generated.
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| WO2006056127A1 (en) * | 2004-11-24 | 2006-06-01 | Huawei Technologies Co., Ltd. | A radio access network system and a method for realizing handover thereof |
| CN1852577A (en) * | 2005-09-28 | 2006-10-25 | 华为技术有限公司 | Method for shortening continuous time-delay under soft switching-over and wireless network controller |
| CN1870814A (en) * | 2005-05-24 | 2006-11-29 | 大唐移动通信设备有限公司 | Set-up/adding method of radio link of cell switchover |
| CN101128050A (en) * | 2007-08-31 | 2008-02-20 | 华为技术有限公司 | Wireless carrier control method, system and service wireless network controller |
| CN101287278A (en) * | 2007-04-11 | 2008-10-15 | 华为技术有限公司 | Configuration information processing method, device and system |
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| WO2006056127A1 (en) * | 2004-11-24 | 2006-06-01 | Huawei Technologies Co., Ltd. | A radio access network system and a method for realizing handover thereof |
| CN1870814A (en) * | 2005-05-24 | 2006-11-29 | 大唐移动通信设备有限公司 | Set-up/adding method of radio link of cell switchover |
| CN1852577A (en) * | 2005-09-28 | 2006-10-25 | 华为技术有限公司 | Method for shortening continuous time-delay under soft switching-over and wireless network controller |
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