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WO2008028386A1 - Procédé de transfert intercellulaire de communication mobile et système et station de base associés - Google Patents

Procédé de transfert intercellulaire de communication mobile et système et station de base associés Download PDF

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Publication number
WO2008028386A1
WO2008028386A1 PCT/CN2007/001607 CN2007001607W WO2008028386A1 WO 2008028386 A1 WO2008028386 A1 WO 2008028386A1 CN 2007001607 W CN2007001607 W CN 2007001607W WO 2008028386 A1 WO2008028386 A1 WO 2008028386A1
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WO
WIPO (PCT)
Prior art keywords
dch
link
information
service
softer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/CN2007/001607
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English (en)
French (fr)
Inventor
Hui Zhi
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to JP2009525898A priority Critical patent/JP4989725B2/ja
Publication of WO2008028386A1 publication Critical patent/WO2008028386A1/zh
Priority to US12/394,329 priority patent/US8121603B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link

Definitions

  • a wireless network related to cell handover includes a radio network controller (RNC) 110, a node (NODEB, a base station of a WCDMA system) 120, and a user terminal under the node 120 (UE, User). Equipment ) 140.
  • RNC radio network controller
  • NODEB node
  • UE User
  • Equipment Equipment
  • a prior art handover scenario that is, a process of performing DCH/E-DCH (Dedicated Channel Enhanced UL DCH, Enhanced Uplink Dedicated Channel) service switching between cells 130 includes the following steps:
  • the UE 140 establishes a radio link (RL) 0 through a signaling process established by a radio link under CELLO (CELL, a logical cell under the WCDMA system) of NODEB0, where CELLO supports DCH and E-DCH.
  • CELLO CELL, a logical cell under the WCDMA system
  • CELLO supports DCH and E-DCH.
  • the specific services carried on the RL0 are: 3.4K+64K (downstream only) + High Speed Uplink Packet Access (HSUPA, High Speed Uplink Packet Access), including DCH service: 3.4 K+64K (downstream only) , also includes E-DCH services: HSUPA;
  • UE 140 moves to the CELLO signal of NODEB0 and the CELL1 signal of NODEB1 in the common coverage area, and establishes RL1 through the signaling process established by the radio link under CELL1 of NODEB1, wherein CELL1 only supports DCH service; CELL1 only supports DCH services. Therefore, the specific service carried on RL1 is DCH: 3.4K+64K (downstream only).
  • UE 140 has two radio links, RL0 and RL1.
  • the DCH data of the two radio links is in NODEB1 is soft Merging; the soft combining means that the radio link is selected on the RNC 110 side;
  • RL2 is added by the signaling procedure added by the radio link under CELL2 of NODEB1, where CELL2 supports DCH and E-DCH services; the specific process of adding RL2 is :
  • CELL2 and UE 140 detect respective signals
  • CELL2 and UE 140 report the results of the RNC 110 through NODEB1; c.
  • the RNC 110 sends a request to the NODEB1 to increase the link RL2;
  • NODEB1 adds link RL2, and tells the RNC 110 through the RL ADDITION signaling process, and the RNC 110 performs communication control accordingly.
  • the signal under CELL1 is already weak, so RNC 110 will delete RL0 and RLl, and UE 140 only has RL2 wireless link.
  • the RC 110 requests the NODEB1 to carry the E-DCH service on the newly added RL2, so that the RL2 is on the RL2.
  • the specific services carried are: 3.4K+64K (downstream only) +HSUPA.
  • UE 140 has three radio links: RL0, RL1, and RL2. Among them, RL0 is softly combined with RL1 and RL2, and RL1 and RL2 are respectively.
  • the DCH performs softer combining, which means that the wireless links are combined on the NODEB side, merged into one link, and the data is sent to the RNC 110.
  • the sub-step d in step 203 is specifically increased by the RADIO LINK ADDITION RESPONSE sent by the NODEB 1 to the RNC 110.
  • the information is sent to the RNC 110 to report softer merge information about the new E-DCH service and the DCH service. 1.
  • the CHOICE Diversity Indication field in the RADIO LINK ADDITION RESPONSE message sent by the NODEB1 to the RNC 110 is selected to select the corresponding enhanced uplink dedicated channel frequency division multiplexing information response (E-DCH). FDD Information Response)
  • E-DCH enhanced uplink dedicated channel frequency division multiplexing information response
  • the Combine corresponding to the RL ID needs to be selected in the CHOICE Diversity Indication field, so that the RNC 110 knows that the UE 140 is to perform a softer merge of the DCH part;
  • Table 1 RADIO LINK ADDITION RESPONSE message abbreviated structure
  • the symbol ">” means the first-level field, followed by the symbol ">, the symbol "" indicates the second-level field of the first-level field.
  • the symbol "">> indicates the corresponding The tertiary field of the secondary field.
  • the two secondary fields respectively have a Radio Link Identifier (RL ID) and a DCH Information Response (DCH Information Response). Level field.
  • the Combining field is used to tell the RNC to soften the merge situation, and Non Combining is used to tell the RNCDCH E-DCH to create/add new conditions.
  • the CHOICE Diversity Indication field can only select one secondary field, namely Combining or Non Combining. That is to say, only one item can be selected in the CHOICE Diversity Indication field: Combining or Non Combining; but in this case, the CHOICE Diversity Indication field will be wrong anyway: because when step 204 is performed, along with the UE 140 Moving on to phase 4, since the signals of UE 140 under CELLO and CELL1 are already weak, RNC 110 will delete RL0 and RL1, and UE 140 has only RL2 radio link.
  • the E-DCH FDD Information Response information cannot notify the RNC, and when the UE 140 is in the phase 4, the UE 140 The HSUPA service corresponding to the E-DCH may be interrupted; if the CHOICE Diversity Indication field is Non Combining in step 203, the ODEB1 cannot fill in the DCH Information Response cell, causing the NODEB1 to increase the RL2 failure, and the UE 140 is in the phase 4, the UE The 140 does not have a wireless link, and the entire UE 140 service is interrupted.
  • the above step 203 can be:
  • the signaling procedure added by the wireless link under CELL2 of NODEB1 is successfully added to RL2, and passed under CELL3 of NODEB1.
  • the signaling process added by the wireless link attempts to increase RL3 but fails.
  • CELL2 supports DCH and E-DCH services
  • CELL3 can support any service cell. For example, it only supports DCH or E-DCH services, and may also support DCH and E-DCH services. Successfully increase RL2.
  • the specific process of adding RL3 failure is:
  • CELL2 detects the respective signals between the UE and the UE 140;
  • CELL2, CELL3 and UE 140 report the results of the RNC 110 through NODEB1; c.
  • the RNC 110 sends a request to the NODEB1 to increase the links RL2 and RL3;
  • NODEB1 increases the success of the link RL2, but the RL3 fails to increase. NODEB1 does not tell the RNC 110 through the RADIO LINK ADDITION RESPONSE message in Table 1 above, but the link establishment result is notified by the RADIO LINK ADDITION FAILURE message in Table 2 below. RNC 110. The RNC 110 performs communication control accordingly.
  • Indicator Table 2 RADIO LINK ADDITION FAILURE message abbreviated structure
  • Successful RL Information Response has the same CHOICE Diversity Indication field as in Table 1, but the field level becomes 3.
  • This field has two Level 4 fields, Combining and Non Combining.
  • the Level 4 fields have RL ID and DCH Information Response > E-DCH FDD Information Response Level 5.
  • the Combining field is used to tell the RNC to soften the merge situation, and Non Combining is used to tell the R C DCH/E-DCH to create/add new conditions.
  • the CHOICE Diversity Indication field can only select one level 4 field, either Combining or Non Combining.
  • the CHOICE Diversity Indication field will be incorrect anyway, for the same reason as the above description of the RADIO LINK ADDITION RESPONSE message.
  • the process of the DCH/E-DCH service switching between the cells of the prior art user equipment is not limited to the above, and the above technical problem may exist in the case where a softer merge is required and the RNC needs to report the related service.
  • An embodiment of the present invention provides a mobile communication switching method, and a mobile communication switching system.
  • a base station is provided to improve mobile communication switching success rate.
  • the technical solution of the embodiment of the present invention includes:
  • a method for handover of a mobile communication comprising the steps of: adding a bearer DCH and an E-DCH service on the basis of a first link that already carries only DCH services The second link of the service and the third link carrying any service; in the case of the third link addition failure, softening the DCH service of the first link and the second link; The softer merge information and the addition of the E-DCH service information are simultaneously notified to the radio network controller, and the radio network controller performs communication control based on the received information.
  • a mobile communication system includes a first base station and a radio network controller, where the first base station has a first link carrying only DCH services; and a second link and bearer carrying DCH and E-DCH services are added.
  • a mobile communication base station comprising: a link management unit, configured to be controlled by a radio network controller, manage a single link carrying only DCH services, add a second link carrying DCH and E-DCH services, and carry any service Third link;
  • a softer merging unit configured to perform softer merging of the DCH services of the first link and the second link in a case where the third link addition fails; and a handover information generating unit, configured to soften the DCH The information is merged and the E-DCH service information is added to the radio network controller.
  • the embodiment of the present invention can simultaneously notify the radio network controller of the softer combining and adding the information of the E-DCH service, and avoid the prior art that only one type of four-level field can be selected in the CHOICE Diversity Indication three-level field, resulting in only The problem of communication failure caused by selecting one of the two information of softer combining and establishing E-DCH service improves the success rate of the user equipment when performing mobile switching in different cells between different nodes, and ensures normal and stable communication.
  • FIG. 1 is a schematic diagram of a mobile communication switching scenario in the prior art
  • FIG. 2 is a flow chart of mobile communication switching occurring in the scenario shown in FIG. 1.
  • FIG. 3 is a schematic diagram of another mobile communication switching scenario in the prior art
  • FIG. 4 is a flow chart of mobile communication switching according to the scenario shown in FIG. 5 is a schematic diagram of a first embodiment of a mobile communication system according to the present invention
  • FIG. 6 is a flowchart of a mobile communication switching method according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of a second embodiment of a mobile communication system according to the present invention
  • It is a flowchart of the second embodiment of the mobile communication switching method of the present invention.
  • the embodiment of the present invention notifies the RNC by using the RL ADDITION signaling by changing the existing 433 protocol, that is, simultaneously Informing the RNC to soften and establish E-DCH service related information, specifically by carrying the DCH softer merge information and adding the E-DCH service that are not in the same diversity indication selection field in the RADIO LINK ADDITION RESPONSE or RADIO LINK ADDITION FAILURE message. Information to inform the wireless network controller.
  • the embodiments of the present invention schematically illustrate the following embodiments to illustrate how to implement the present invention in the case where a softer merge is required and the RNC needs to be reported to establish related services.
  • the embodiment relates to a scenario in which a UE performs mobile communication switching between two different NODEBs, wherein the CELL under the first NODEB supports DCH and E-DCH (referred to as DCH/E-DCH, the same below) service, Two NODEBs include two or three CELLs, one of which supports DCH/E-DCH services, and the other/two CELLs only support DCH services.
  • the first embodiment of the mobile communication handover method of the present invention is a process in which the UE 340 performs DCH/E-DCH service handover between the cells 330.
  • the UE 340 performs mobile communication switching between two different NODEBs 321, 322, which are RNCs. 310 control.
  • the embodiment described with reference to Figures 5 and 6 includes the steps of:
  • the UE 340 establishes RL0 in the signaling process established by the radio link under the CELLO of the NODEB 321, where the CELLO supports the DCH and the E-DCH service;
  • the specific service carried on the RL0 is: 3.4K+ 64K (downstream only) + HSUPA, including DCH service: 3.4 K+64K (downstream only), also includes E-DCH service: HSUPA;
  • UE 340 moves to the CELLO signal of NODEB 322 and the CELLO signal of NODEB 321 in the common coverage area, and establishes RL1 through the signaling process established by the radio link under CELL1 of NODEB 322, where CELL1 only supports DCH. Service; Since CELL1 only supports DCH services, the specific service carried on RL1 is DCH: 3.4K+64K (downstream only). At this time, UE 340 has two radio links, RL0 and RL1, and the two wireless links. DCH data is soft merged at NODEB 322;
  • RL2 is added by the signaling procedure added by the radio link under CELL2 of NODEB 322, where CELL2 supports DCH and E-DCH services; the specific process of adding RL2 For:
  • CELL2 and UE 340 report the respective detection results of R C 310 through NODEB 322;
  • the RNC 310 sends a request to the NODEB 322 to increase the link RL2;
  • NODEB 322 adds link RL2;
  • the link establishment result is notified to the RNC 310 by carrying the DCH softer merge information and the added E-DCH service information belonging to different first level fields in the RADIO LINK ADDITION RESPONSE message, and the RNC 310 performs communication accordingly.
  • the RNC 310 deletes RL0 and RL1 and successfully reserves RL2.
  • HSUPA business is not interrupted.
  • the RNC 310 requests the NODEB 322 to carry the E-DCH service on the newly added RL2, so the RL2 is on the RL2.
  • the specific services carried are: 3.4K+64K (downstream only) +HSUPA.
  • UE 340 has three radio links: RL0, RL1, and RL2. Among them, RL0 is softly combined with RL1 and RL2, and RL1 and RL2 are respectively. DCH performs a softer merge.
  • the sub-step 403f in step 403 specifically tells the RNC 310 about the softer merge information about the new E-DCH service and the DCH service by the RADIO LINK ADDITION RESPONSE message sent by the NODEB 322 to the RNC 310.
  • Table 3 Modified RADIO LINK ADDITION RESPONSE message tube in the column of the cell in the table, the symbol “ > “ indicates the first-level field, followed by the symbol “ >, the symbol “" indicates the second level of the subordinate field Field, the same reason, the symbol “ >» " indicates the three-level field corresponding to the secondary field.
  • the two secondary fields respectively have the L ID and The DCH Information Response level three field, where the Combining field is used to tell the RNC to softer the merge situation, the Non Combining is used to tell the RNC DCH to create/add new cases, and the E-DCH FDD Information Response level field is used to tell the RNC E-DCH
  • the new/additional situation is used to notify the RNC 310 in this embodiment that the UE 340 needs to establish a link and perform E-DCH service on the link. That is, the location of the E-DCH FDD Information Response is from the CHOICE Diversity Indication.
  • the Non Combining is separated and made parallel with the location of the CHOICE Diversity Indication. This makes the RL DCH merge/not merge with the E-DCH new The built/added information is independent, and the DCH merge is represented by the CHOICE Diversity Indication IE.
  • the embodiment of the present invention simultaneously generates a CHOICE Diversity Indication first-level field and an E-DCH FDD Information Response first-level field that are not in the same first-level field in a RADIO LINK ADDITION RESPONSE message, and can simultaneously notify the RNC 310.
  • Soft combining and establishing the information of the E-DCH service In the prior art, only one secondary field can be selected in the CHOICE Diversity Indication first-level field, which can only be used in the softer combining and establishing the E-DCH service. Selecting one causes a communication failure problem regardless of the CHOICE Diversity Indication field.
  • the communication failure is: when step 404 is performed, in phase 4 as the UE 340 continues to move, due to the UE 340
  • the signals under CELLO and CELL1 are already weak, so RNC 310 will delete RL0 and RL1, and UE 340 has only RL2 radio link.
  • the CHOICE Diversity Indication field in Table 1 can only be selected one by one. If the CHOICE Diversity Indication field is Combining, the E-DCH FDD Information Response information cannot notify the RNC, and the UE 340 is at the UE 340.
  • the HSUPA service corresponding to the E-DCH is interrupted; if the CHOICE Diversity Indication field is Non Combining, the NODEB 322 cannot fill in the DCH Information Response cell and the NODEB 322 fails to increase the RL2, and the UE 340 is in the phase 4
  • the UE 340 does not have a radio link, and the service of the entire UE 340 is interrupted.
  • the embodiment of the present invention satisfactorily solves the problem that the prior art fails to inform the NC 310 to soften the merge and add the information of the E-DCH service at the same time, which causes the communication failure to occur, and ensures that the UE 340 has different CELLs between different NODEBs. Keep communication normal and stable while moving.
  • the scenarios in which the embodiments of the present invention are applicable are not limited to the foregoing embodiments, and the embodiments of the present invention are applicable to the case where the above-mentioned technical problems are avoided, in the case where a softer merge is required and the RNC is required to establish/add new related services.
  • the DCH softer merge information and the added E-DCH service information that belong to different first-level fields are not limited to the form of Table 2 above, and may also be: Adding E-DCH service information, and using the CHOICE Diversity Indication with the content of Combining
  • the first level field indicates that the DCH softer merge information is represented by the E-DCH FDD Information Response first level field.
  • an embodiment of the present invention further provides a mobile communication system, including a UE 340, a NODEB 321, 322, and an RNC 310.
  • the NODEB 322 includes a handover information generating unit 323.
  • the UE 340 performs mobile communication switching between two different NODEBs, NODEB 321, 322, which is controlled by the RNC 310.
  • NODEB 321, 322 There are CELLO under NODEB 321 and CELL1 and CELL2 under NODEB 322. Among them, CELLO and CELL2 support DCH and E-DCH services; CELL1 only supports DCH services.
  • the NODEB 322 has a first link RL1 that only carries the DCH service.
  • the UE 340 is under the NODEB 322 when performing DCH and E-DCH services under the CELLO of the NODEB 321 CELL1 establishes RL1.
  • the NODEB 322 performs softer combining on the DCH services of RL1 and RL2.
  • the NODEB 322 notifies the RNC 310 of the information of the softer merge and the addition of the E-DCH service by the handover information generating unit 323.
  • the handover information generating unit 323 is configured to generate, in the RADIO LINK ADDITION RESPONSE message, a CHOICE Diversity Indication field in which the content of the first-level field is Combining (that is, a field indicating DCH softer merge information) and an E-DCH FDD Information Response
  • the field (that is, the field indicating the addition of E-DCH service information) is then sent to the RNC 310 by transmitting a RADIO LINK ADDITION RESPONSE message carrying the DCH softer merge information and the newly added E-DCH service information.
  • NODEB 322 can also be referred to as a first base station, and the above NODEB 321 can also be referred to as a second base station.
  • the UE 740 performs mobile communication switching between two different NODEBs, NODEB 721, 722, which are controlled by the RNC 710. There are CELLO under NODEB 721 and CELL1, CELL2 and CELL3 under NODEB 722.
  • the embodiment includes the following steps: 401, 402, and 404: The first embodiment of the mobile communication switching method of the present invention is not repeatedly described;
  • step 403 of the present embodiment corresponding to step 403 of the first embodiment described above,
  • CELL2 supports DCH and E-DCH services
  • CELL3 can support any service cell. For example, it only supports DCH or E-DCH services, and may also support DCH and E-DCH services.
  • Successfully increase RL2 and increase The specific process of RL3 failure is:
  • RNC 710 sends a request to NODEB 722 to add links RL2 and RL3;
  • NODEB 322 successfully increased link RL2, but failed to increase RL3;
  • the link establishment result is notified to the RNC 710 by carrying the DCH softer merge information not in the same diversity indication selection field and adding the E-DCH service information in the modified RADIO LINK ADDITION FAILURE message.
  • the DCH softer merge information and the added E-DCH service information are the same three-level fields, which belong to the second-level field Successful RL Information Response,
  • the E-DCH FDD Information Response level field it also belongs to the Successful RL Information Response secondary field, which is used to tell the C 710 UE 740 to establish a link and perform E-DCH service on this link. Specifically, if the E-DCH service is merged with other wireless links, the E-DCH FDD Information Response field is not filled in. If the E-DCH is not merged with other wireless links, the E-DCH FDD Information Response field is filled in. That is, the embodiment of the present invention simultaneously generates a CHOICE Diversity Indication level field and an E-DCH FDD Information Response level field in a RADIO LINK ADDITION FAILURE message, so that the radio link DCH is merged/disjointed.
  • the E-DCH newly created/added information is independent of each other, and can simultaneously inform the RNC 310 to softer and establish the information of the E-DCH service, and avoid the prior art that only one level of the CHOICE Diversity Indication three-level field can be selected.
  • the field causes communication failure problems only in softer merges and establishment of E-DCH services.
  • the communication failure is to ensure that the UE 740 maintains normal and stable communication when different CELLs between different NODEBs 721, 722 perform mobile handover.
  • the scenario in which the embodiments of the present invention are applicable is not limited to the foregoing embodiments, and the present invention is applicable to the case where the softer merge is required and the RC establishment/addition related service needs to be reported to avoid the occurrence of the above technical problem.
  • the present invention is also applicable; or, only one RL2 carrying E-DCH services is successfully added.
  • a plurality of newly added links RL3, RL4, RL5, Vietnamese increase/new failure the present invention is equally applicable. That is, if at least one radio link carrying the E-DCH service is successfully added, and at least one new radio link fails, the RNC is required to be notified by the RADIO LINK ADDITION FAILURE message, and thus the present invention is applicable.
  • the DCH softer merge information and the added E-DCH service information belonging to different first-level fields are not limited to the form of Table 4 above, and may be: C-CHOICE Diversity Indication for adding E-DCH service information content to Combining
  • the level field indicates that the DCH softer merge information is represented by the E-DCH FDD Information Response level field outside the Successful RL Information Response secondary field; or the DCH softer merge information is represented by the CHOICE Diversity Indication level field of the Combining content.
  • the E-DCH service information is represented by any five-level/four-level/third-level/secondary/first-level field except the Successful RL Information Response secondary field.
  • the third embodiment of the mobile communication switching method in the embodiment of the present invention is similar to the second embodiment described above, except that: in case the third link increases failure, the wireless network controller is notified to softer merge and increase.
  • the manner of information on E-DCH services has changed, as shown in the following table:
  • Table 5 Modified RADIO LINK ADDITION FAILURE message structure 2
  • the special feature of this embodiment is: by the diversity indication in the RADIO LINK ADDITION FAILURE message, the Combining field under the selection field carries the DCH softer merge information and The E-DCH service information is added to notify the radio network controller.
  • the Combining four-level field includes both the RL ID and the E-DCH FDD Information Response five-level field.
  • the present invention also provides a mobile communication system including a UE 740, a NODEB 721, 722, and an RNC 710.
  • the NODEB 722 includes a handover information generating unit 723.
  • the UE 740 performs mobile communication switching between two different NODEBs 721, 722, which are controlled by the RNC 710.
  • CELLO and CELL2 support DCH and E-DCH services;
  • CELL1 only supports DCH services;
  • CELL3 can support any service without specifying.
  • the NODEB 722 has a first link RL1 that only carries the DCH service.
  • the UE 740 establishes RL1 with CELL1 under NODEB 722 when performing DCH and E-DCH services under CELLO of NODEB 721.
  • the RNC 710 requests the NODEB 722 to add a second link RL2 carrying DCH and E-DCH services
  • the NODEB 722 performs softer combining on the DCH services of RL1 and RL2.
  • the NODEB 722 notifies the RNC 710 of the softer merge and add information of the E-DCH service by the handover information generating unit 723; meanwhile, when the RNC 710 requests the NODEB 722 to newly add the third link RL3, The NODEB 722 notifies the RNC 710 of the information of the newly added RL 3 by the handover information generating unit 723.
  • the handover information generating unit 723 is configured to generate, in the RADIO LINK ADDITION FAILURE message, a CHOICE Diversity Indication field and an E-DCH FDD Information in which the content of the third-level field is Combined.
  • the Response field sends a RADIO LINK ADDITION RESPONSE message carrying the DCH softer merge information and the new E-DCH service information to notify the RNC 710.
  • the structure of the RADIO LINK ADDITION FAILURE message can be referred to Table 4 above.
  • the embodiment of the present invention passes the switching information generating unit 723 in a RADIO.
  • the LINK ADDITION FAILURE message simultaneously generates a CHOICE Diversity Indication level field and an E-DCH FDD Information Response level field that are not in the same diversity indication selection field, and tells the RNC 710 to softer merge and add information of the E-DCH service, avoiding existing information.
  • Technology Only one type of four-level field can be selected in the CHOICE Diversity Indication level field, so that only one of the two information of softer combining and adding E-DCH service can be selected, and the CHOICE Diversity Indication field is filled in any case.
  • the handover information generating unit 723 is configured to generate a RADIO LINK ADDITION FAILURE message including a Combining field to notify the radio network controller that the Combining field is under the diversity indication selection field, and simultaneously carrying the DCH is softer. Consolidate information and add E-DCH service information.
  • a mobile communication base station including: a link management unit, configured to be controlled by a radio network controller, to manage a first link carrying only a DCH service, and to increase a bearer DCH and an E-DCH. a second link of the service and a third link carrying any service;
  • a softer merging unit configured to perform softer merging of the DCH services of the first link and the second link in case that the third link addition fails
  • a handover information generating unit configured to soften the DCH
  • the information is merged and the E-DCH service information is added to the radio network controller.
  • the information of the above-mentioned DCH softer combining and adding the E-DCH service may be notified by the non-same diversity indication selection field in the radio link increase failure message RADIO LINK ADDITION FAILURE message to notify the radio network controller; or, the above DCH is softer merged and The information of the E-DCH service may be added by the radio link to increase the failure message.
  • the diversity indication in the RADIO LINK ADDITION FAILURE message indicates that the Combining field under the selection field is carried at the same time to notify the radio network controller; or, the above DCH is softer merged and added E-
  • the information of the DCH service may also be sent to the radio network controller by adding a different first-level field carried in the response RADIO LINK ADDITION RESPONSE message through the radio link.
  • the non-same diversity indication of the radio link increase failure message RADIO LINK ADDITION FAILURE message indicates that the selection field notifies the radio network controller, the DCH is softer to merge information.
  • the CHOICE Diversity Indication level field indicating that the content is Combining indicates that the added E-DCH service information is represented by an E-DCH FDD Information Response three-level field belonging to the same two-level field as the foregoing three-level field.

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Description

移动通信切换方法及其系统和基站 本申请要求于 2006 年 8 月 31 日提交中国专利局、 申请号为 200610111874.X 发明名称为"移动通信切换方法及其系统和基站 "的中国专利 申请的优先权， 其全部内容通过引用结合在本申请中。 技术领域 本发明涉及通信方法及其系统、基站，特别是涉及一种移动通信切换方法 及其系统、 基站。 背景技术 参阅图 1 ,现有技术涉及小区切换的无线网络包括无线网络控制器（RNC, Radio Network Controller ) 110、 节点（NODEB, WCDMA系统的基站） 120以 及节点 120下面的用户终端（ UE, User Equipment ) 140。 当 UE 140在小区 130 之间切换时， 通过节点 120在无线链路增加（RADIO LINK ADDITION, RL ADDITION )信令进程中增加相关信息通知 RNC 110。
参阅图 1 和图 2 , —种现有技术切换情况， 即在小区 130 之间进行 DCH/E-DCH (专用信道 Enhanced UL DCH , 增强型上行专用信道）业务切换 的过程包括如下步骤：
201、 在阶段 1时， UE 140在 NODEB0的 CELLO ( CELL, WCDMA系统 下的逻辑小区）下通过无线链路建立的信令过程建立无线链路 ( RL ) 0, 其中 CELLO支持 DCH和 E-DCH业务；所述 RL0上承载的具体业务为： 3.4K+64K (仅 下行) +高速上行数据包接入 ( HSUPA, High Speed Uplink Packet Access ), 其中 包括 DCH业务： 3.4 K+64K (仅下行)， 还包括 E-DCH业务： HSUPA;
202、在阶段 2时， UE 140移动到 NODEB0的 CELLO与 NODEB1的 CELL1 信号共同覆盖区内，又在 NODEB1的 CELL1下通过无线链路建立的信令过程 建立 RL1 , 其中 CELL1只支持 DCH业务； 由于 CELL1只支持 DCH业务， 因此 RL1上承载的具体业务为 DCH: 3.4K+64K (仅下行)， 此时 UE 140同时 有 RL0、 RLl两条无线链路，此两条无线链路的 DCH数据在 NODEB1进行软 合并； 所述的软合并是指无线链路在 RNC 110侧进行选择；
203、 随着 UE 140的继续移动， 在阶段 3时， 又在 NODEB1的 CELL2 下通过无线链路增加的信令过程增加了 RL2，其中 CELL2支持 DCH和 E-DCH 业务； 增加 RL2的具体过程为：
a、 CELL2和 UE 140探测到各自信号；
b、 CELL2和 UE 140通过 NODEB1报告 RNC 110各自探测结果； c、 RNC 110向 NODEB1发送增加链路 RL2的请求；
d、 NODEB1增加链路 RL2, 并将链路建立结果通过 RL ADDITION信令 进程告诉 RNC 110, RNC 110据此进行通信控制。
204、 随着 UE 140的继续移动而位于阶段 4, 由于 UE 140在 CELLO和
CELL1下的信号已经很微弱， 因此 RNC 110会删除 RL0和 RLl , UE 140只 有 RL2这一条无线链路。
在上述步驟 203中， 由于 CELL2支持 DCH和 E-DCH业务， 并且 CELLO 也支持 E-DCH业务， 为了让业务延续， R C 110会请求 NODEB1在新增的 RL2上承载 E-DCH业务， 因此 RL2上承载的具体业务为： 3.4K+64K (仅下 行) +HSUPA, 此时 UE 140同时有 RL0、 RL1、 RL2三条无线链路； 其中， RL0 分別和 RLl、 RL2进行 DCH软合并， RL1和 RL2的 DCH进行更软合并， 所 述的更软合并是指无线链路在 NODEB侧进行合并，合并为一条链路， 将数据 发向 RNC 110。
一般情况下， 只需要将链路的更软合并情况和 DCH/E-DCH新建 /新增情 况通过 RL ADDITION信令进程告诉 RNC 110。 因为软合并是在两个 NODEB 间进行链路选择， 因此 RNC 110直接处理； 更软合并则是在一个 NODEB中 进行链路合并， 需要通过 NODEB 在 RL ADDITION信令中标示。 同理， DCH/E-DCH新建 /新增情况是在一个 NODEB中进行，所以也需要通过 NODEB 在 RL ADDITION信令中标示。
参阅下表一， 其中， 步骤 203中的子步骤 d具体是通过在 NODEB 1发送 到 RNC 110的无线链路增加响应 （ RADIO LINK ADDITION RESPONSE ) 消 息中来告诉 RNC 110有关新建 E-DCH业务和 DCH业务的更软合并信息。 一、 对于新建 E-DCH业务， 需要通过 NODEB1发往 RNC 110的 RADIO LINK ADDITION RESPONSE 消息中的分集指示选择（CHOICE Diversity Indication )字段选中对应增强型上行专用信道频分复用信息响应（ E-DCH FDD Information Response )信息的 Non Combining, 使 RNC 110知道 UE 140要建 立链路并在此链路上进行 E-DCH业务；
二、对于 DCH业务的更软合并信息， 需要在 CHOICE Diversity Indication 字段选中对应 RL ID的 Combining, 使 RNC 110知道 UE 140要进行 DCH部 分的更软合并；
Figure imgf000005_0001
表一： RADIO LINK ADDITION RESPONSE消息简略结构 上表中信元一列中， 符号" >，，表示一级字段， 紧随符号" >，，的符号 "》"表示 此一级字段下属的二级字段， 同理，符号"》> "表示对应二级字段的三級字段。 对于 CHOICE Diversity Indication字段， 有合并（Combining )和不合并（Non Combining )两个二级字段， 两个二级字段分别下辖无线链路标识（RL ID )和 DCH信息响应 （DCH Information Response )三级字段。 其中 Combining字段 用于告诉 RNC更软合并情况， Non Combining用于告诉 RNCDCH E-DCH新 建 /新增情况。 对于一条 RADIO LINK ADDITION RESPONSE消息， CHOICE Diversity Indication字段只能选择一种二级字段， 即 Combining或 Non Combining。也就 是说， CHOICE Diversity Indication字段中只能选择一项： Combining或 Non Combining; 但这样的话， CHOICE Diversity Indication字段无论如何填写， 都 将是错误的： 因为在进行步骤 204时， 随着 UE 140的继续移动而位于阶段 4, 由于 UE 140在 CELLO和 CELL1下的信号已经很微弱， 因此 RNC 110会删除 RL0和 RL1 , UE 140只有 RL2这一条无线链路。 这时如果在步驟 203中 CHOICE Diversity Indication字段为 Combining, 因为 CHOICE Diversity Indication字段只能二选一的关系， 则 E-DCH FDD Information Response信息无法通知 RNC, 在 UE 140处在阶段 4时， UE 140 对应 E-DCH的 HSUPA业务会中断； 如果在步骤 203 中 CHOICE Diversity Indication 字段为 Non Combining, 则 ODEB1 无法填写 DCH Information Response信元， 导致 NODEB1增加 RL2失败， 则在 UE 140处在阶段 4时， UE 140没有一条无线链路， 整个 UE 140的业务被中断。 在另一种情景下， 上述步骤 203可以是：
203，、参阅图 3和图 4,随着 UE 140的继续移动，在阶段 3时，又在 NODEB1 的 CELL2下通过无线链路增加的信令过程成功增加了 RL2, 以及在 NODEB1 的 CELL3下通过无线链路增加的信令过程试图增加 RL3 ,但失败。其中 CELL2 支持 DCH和 E-DCH业务， 而 CELL3则可以是支持任何业务的小区， 比如仅 支持 DCH或 E-DCH业务，也可能都支持 DCH和 E-DCH业务；成功增加 RL2 以及增加 RL3失败的具体过程为：
a、 CELL2, CELL3分别与 UE 140之间探测到各自信号；
b、 CELL2, CELL3和 UE 140通过 NODEB1报告 RNC 110各自探测结果； c、 RNC 110向 NODEB1发送增加链路 RL2和 RL3的请求；
d、 NODEB1增加链路 RL2成功， 但 RL3增加失败， NODEB1并不通过 上述表一的 RADIO LINK ADDITION RESPONSE消息告诉 RNC 110, 而是将 链路建立结果通过下述表二的 RADIO LINK ADDITION FAILURE消息告诉 RNC 110。 RNC 110据此进行通信控制。
Figure imgf000007_0001
Information Response
»>SSDT Support M 9.2,2,46 ―
Indicator 表二： RADIO LINK ADDITION FAILURE消息简略结构 上表中， Successful RL Information Response 下辖有与表一中一样的 CHOICE Diversity Indication 字段， 但该字段级别变为 3。 该字段下辖有 Combining和 Non Combining两个 4级字段， 两 4级字段分别下辖 RL ID和 DCH Information Response > E-DCH FDD Information Response 5级字段。 其中 Combining字段用于告诉 RNC更软合并情况， Non Combining用于告诉 R C DCH/E-DCH新建 /新增情况。 同样地， 对于一条 RADIO LINK ADDITION FAILURE消息， CHOICE Diversity Indication 字段只能选择一种 4 级字段， 即 Combining 或 Non Combining。 也就是说， CHOICE Diversity Indication字段中只能选择一项： Combining或 Non Combining; 但这样的话, CHOICE Diversity Indication字段 无论如何填写， 都将是错误的， 理由同上述的 RADIO LINK ADDITION RESPONSE消息的描述。 现有技术用户设备在小区之间进行 DCH/E-DCH服务切换的过程不限于 上述情况， 在需要进行更软合并而且需要报告 RNC建立相关业务的情况下， 都可能存在上述技术问题。也就是说目前 433协议的 RADIO LINK ADDITION RESPONSE/RADIO LINK ADDITION FAILURE消息结构有缺陷， NODEB无 法正确告知 RNC当前用户的链路情况， 使 IUB口 （ RNC和 Node B之间的接 口）的信令处理错误。
发明内容
本发明实施例一方面提供一种移动通信切换的方法，另一方面提供一种移 动通信切换的系统， 再一方面提供一种基站， 以提高移动通信切换成功率。 本发明实施例的技术方案包括：
一种移动通信切换的方法， 包括步骤， 在已有仅承载 DCH业务的第一链路基础上， 增加承载 DCH和 E-DCH业 务的第二链路和承载任何业务的第三链路； 在所述第三链路增加失败情况下， 对所述第一链路和第二链路的 DCH业务进行更软合并； 将 DCH更软合并信息和增加 E-DCH业务信息同时通知给无线网络控制 器， 所述无线网络控制器根据接收到的信息进行通信控制。 一种移动通信系统， 包括第一基站和无线网络控制器， 所述第一基站， 下辖有仅承载 DCH业务的第一链路； 增加承载 DCH和 E-DCH业务的第二链路和承载任何业务的第三链路； 在所述第三链路增加失 败情况下， 对所述第一链路和第二链路的 DCH业务进行更软合并； 将 DCH 更软合并信息和增加 E-DCH业务信息同时通知给无线网络控制器； 所述无线网络控制器， 用于根据接收到的信息进行通信控制。 一种移动通信基站， 包括： 链路管理单元， 用于受无线网络控制器控制， 管理仅承载 DCH业务的笫 一链路， 增加承载 DCH和 E-DCH业务的第二链路和承载任何业务的第三链 路；
更软合并单元，用于在所述第三链路增加失败情况下，对所述第一链路和 第二链路的 DCH业务进行更软合并； 切换信息生成单元， 用于将 DCH更软合并信息和增加 E-DCH业务信息 同时通知给无线网络控制器。 由于本发明实施例可以同时通知无线网络控制器所述更软合并和增加 E-DCH业务的信息 ,避免现有技术中只能在 CHOICE Diversity Indication三级 字段中选择一种四级字段而导致只能在更软合并和建立 E-DCH业务两个信息 中选择一个而造成的通信故障问题，提高了用户设备在不同节点间的不同小区 进行移动切换时的成率， 保证了通信正常和稳定。
附图说明 图 1是现有技术一种移动通信切换场景示意图； 图 2是 居图 1所示场景而发生的移动通信切换流程图； 图 3是现有技术另一种移动通信切换场景示意图； 图 4是根据图 3所示场景而发生的移动通信切换流程图； 图 5是本发明移动通信系统第一实施方式的示意图； 图 6是本发明移动通信切换方法笫一实施方式的流程图； 图 7是本发明移动通信系统第二实施方式的示意图； 图 8是本发明移动通信切换方法第二实施方式的流程图。
具体实施方式 在移动通信切换中，在需要进行更软合并而且需要报告 RNC建立 /增加相 关业务的情况下，本发明实施例通过改变现有 433协议通过 RL ADDITION信 令通知 RNC的方式，即同时通知 RNC更软合并和建立 E-DCH业务相关信息， 具体是通过在 RADIO LINK ADDITION RESPONSE 或 RADIO LINK ADDITION FAILURE消息中携带不在同一分集指示选择字段的所述 DCH更 软合并信息和增加 E-DCH业务信息来通知无线网络控制器。 以下结合实施方式和附图， 对本发明实施例进行详细描述。 本发明实施例示意性地举以下实施方式以说明在需要进行更软合并而且 需要报告 RNC建立相关业务的情况下， 如何实现本发明。 所述实施方式涉及 UE在不同的两个 NODEB之间进行移动通信切换的场景，其中第一个 NODEB 下的 CELL支持 DCH和 E-DCH(记为 DCH/E-DCH,下同）业务，第二个 NODEB 下包括两个或三个 CELL, 其中一个 CELL支持 DCH/E- DCH业务， 另一个 / 两个 CELL则仅支持 DCH业务。 UE是先从第一个 NODEB下的 CELL移动 到第二个 NODEB下的仅支持 DCH业务的 CELL,最后移动到第 个 NODEB 下的支持 DCH/E-DCH业务的 CELL。 参阅图 5, 所述本发明移动通信切换方法第一实施方式是 UE 340在小区 330之间进行 DCH/E-DCH 业务切换的过程。 所述 UE 340在不同的两个 NODEB 321, 322之间进行移动通信切换， 所述两个 NODEB 321, 322受 RNC 310控制。 NODEB 321下有 CELL0， NODEB 322下有 CELLl和 CELL2。 参 阅图 5和图 6所述实施方式包括步骤：
401、在阶段 1时， UE 340在 NODEB 321的 CELLO下通过无线链路建立 的信令过程建立 RL0, 其中 CELLO支持 DCH和 E-DCH业务； 所述 RL0上承 载的具体业务为： 3.4K+64K (仅下行) + HSUPA, 其中包括 DCH 业务： 3.4 K+64K (仅下行)， 还包括 E-DCH业务： HSUPA;
402、 在阶段 2时， UE 340移动到 NODEB 322的 CELL1与 NODEB 321 的 CELLO信号共同覆盖区内， 又在 NODEB 322的 CELL1下通过无线链路建 立的信令过程建立 RL1 , 其中 CELL1只支持 DCH业务； 由于 CELL1只支持 DCH业务， 因此 RL1 上承载的具体业务为 DCH: 3.4K+64K (仅下行)， 此时 UE 340 同时有 RL0、 RLl 两条无线链路， 此两条无线链路的 DCH数据在 NODEB 322进行软合并；
403、 随着 UE 340的继续移动， 在阶段 3时， 又在 NODEB 322的 CELL2 下通过无线链路增加的信令过程增加了 RL2,其中 CELL2支持 DCH和 E-DCH 业务； 增加 RL2的具体过程为：
403a、 CELL2和 UE 340探测到各自信号；
403b, CELL2和 UE 340通过 NODEB 322报告 R C 310各自探测结果；
403c、 RNC 310向 NODEB 322发送增加链路 RL2的请求；
403d、 NODEB 322增加链路 RL2;
403e、 对所述 RLl和 RL2的 DCH业务进行更软合并；
403f、 将链路建立结果通过在 RADIO LINK ADDITION RESPONSE消息 中携带分属不同一级字段的所述 DCH更软合并信息和增加 E-DCH业务信息 来通知 RNC 310， RNC 310据此进行通信。
404、 随着 UE 340的继续移动而位于阶段 4， 由于 UE 340在 CELLO和 CELL1下的信号已经很微弱，因此 RNC 310删除 RL0和 RL1 ,成功保留 RL2,
HSUPA业务不中断。 在上述步骤 403中， 由于 CELL2支持 DCH和 E-DCH业务， 并且 CELLO 也支持 E-DCH业务， 为了让业务延续， RNC 310请求 NODEB 322在新增的 RL2上承载 E-DCH业务， 因此 RL2上承载的具体业务为： 3.4K+64K (仅下 行) +HSUPA, 此时 UE 340同时有 RL0、 RL1、 RL2三条无线链路； 其中， RL0 分别和 RL1、 RL2进行 DCH软合并， RL1和 RL2的 DCH进行更软合并。
此时需要将链路的更软合并情况和 DCH/E-DCH新建 /新增情况通过 RL ADDITION信令进程告诉 RNC 310。
参阅下表三， 其中， 步骤 403中的子步驟 403f具体是通过 NODEB 322 发送到 RNC 310的 RADIO LINK ADDITION RESPONSE消息来告诉 RNC 310 有关新增 E-DCH业务和 DCH业务的更软合并信息。
信元类型
标示 说明 指定关键性 信元 /组名 范围 和参考（IE 关键性
(Presence ( Semantics (Assigned
( IE/Group Name ) (Range) Type and (Criticality)
) Description ) Criticality)
Reference )
>Received Total Wide
M 9.2.2.39A - Band Power
>CHOICE Diversity
M - Indication
»Combining 一
»>RL ID M 9.2.1.53 Reference RL -
»Non Combining -
»>DCH Information
M 9.2.1.20C - Response
>SSDT Support
M 9.2.2.46 - Indicator
>DL Power Balancing
O 9.2.2.12C YES ignore Activation Indicator
>E-DCH RL Set ID RL Set E
O YES ignore
9.2.2.39
>E-DCH FDD DL
Control Channel o 9.2.2.13Dc YES ignore Information
>Initial DL DPCH DL DPCH
Timing Adjustment Timing
o YES ignore
Adjustment
9.2.2.1 OA
>E-DCH FDD o 9.2.2.13Db YES ignore Information Response
Criticality Diagnostics 0 9.2.1.17 YES ignore
HS-DSCH Serving Cell
Change Information O 9.2.2.18Ec YES Ignore Response
E-DCH Serving Cell
Change Information o 9.2.2.18Ed YES Ignore Response
表三： 修改的 RADIO LINK ADDITION RESPONSE消息筒略结构 上表中信元一列中， 符号" > "表示一级字段， 紧随符号" >，，的符号 "》"表示 此一级字段下属的二级字段， 同理，符号" >» "表示对应二级字段的三级字段。 对于 CHOICE Diversity Indication 一级字段， 有 Combining 和 Non Combining两个二级字段， 两个二级字段分别下辖 L ID和 DCH Information Response三级字段。 其中 Combining字段用于告诉 RNC更软合并情况， Non Combining用于告诉 RNC DCH新建 /新增情况； 对于 E-DCH FDD Information Response一级字段， 用于告诉 RNC E-DCH 新建 /新增情况， 本实施例中用于告知 RNC 310, UE 340要建立链路并在此链 路上进行 E-DCH业务。 也即， 将 E-DCH FDD Information Response的位置从 CHOICE Diversity Indication的 Non Combining下脱离出来， 使之和 CHOICE Diversity Indication的位置并行。 这样使 RL的 DCH合并 /不合并与 E-DCH新 建 /新增信息各自独立， DCH的合并情况通过 CHOICE Diversity Indication IE 来表示。
也就是说， 本发明实施例在一条 RADIO LINK ADDITION RESPONSE消 息中同时生成分属不在同一个一级字段的 CHOICE Diversity Indication一级字 段和 E-DCH FDD Information Response一级字段， 可以同时告诉 RNC 310更 软合并和建立 E-DCH业务的信息， 避免现有技术中只能在 CHOICE Diversity Indication一级字段中选择一种二级字段而导致只能在更软合并和建立 E-DCH 业务两个信息中选择一个， 而导致无论 CHOICE Diversity Indication字段无论 如何填写都造成通信故障问题。 所述通信故障是： 在进行步骤 404时， 随着 UE 340的继续移动而位于阶段 4, 由于 UE 340 在 CELLO和 CELL1下的信号已经 4艮微弱，因此 RNC 310会删除 RL0和 RL1 , UE 340只有 RL2这一条无线链路。此时按照现有技术的方法，表一中 CHOICE Diversity Indication字段只能二选一的关系， 若 CHOICE Diversity Indication字 段为 Combining时， 则 E-DCH FDD Information Response信息无法通知 RNC, 在 UE 340处在阶段 4时对应 E-DCH的 HSUPA业务会中断； 若 CHOICE Diversity Indication字段为 Non Combining时， 则 NODEB 322无法填写 DCH Information Response信元而导致 NODEB 322增加 RL2失败， 则在 UE 340处 在阶段 4时， UE 340没有一条无线链路， 整个 UE 340的业务被中断。 显然， 本发明实施例很好地解决了现有技术由于无法同时告知 NC 310 更软合并和新增 E-DCH业务的信息而导致出现通信故障的问题，保证 UE 340 在不同 NODEB间的不同 CELL进行移动切换时保持通信正常和稳定。 本发明实施例可应用的场景不限于上述实施方式，凡是在需要进行更软合 并而且需要报告 RNC建立 /新增相关业务的情况下， 都适用本发明实施例， 避 免上述技术问题的发生。 所述的分属不同一级字段的 DCH更软合并信息和增加 E-DCH业务信息 也不仅限于上述表二的形式， 还可以是： 增加 E-DCH业务信息， 用内容为 Combining的 CHOICE Diversity Indication一級字段表示， DCH更软合并信息 用 E-DCH FDD Information Response 一级字段表示。 而且， E-DCH FDD Information Response和 CHOICE Diversity Indication一级字段在表中的相对位 置可以任意设置。 参阅图 5 , 本发明实施例还提供一种移动通信系统， 包括 UE 340、 NODEB321, 322和 RNC 310。 所述 NODEB 322包括切换信息生成单元 323。 所述 UE 340在不同的两个 NODEB即 NODEB 321, 322之间进行移动通信切 换，所述 NODEB 321， 322受 RNC 310控制。 NODEB 321下有 CELLO, NODEB 322下有 CELL1和 CELL2。其中 CELLO和 CELL2支持 DCH和 E-DCH业务； CELL1仅支持 DCH业务。 所述 NODEB 322下已有仅承载 DCH业务的第一链路 RL1。 所述 UE 340 是在 NODEB 321的 CELLO下进行 DCH和 E-DCH业务时在 NODEB 322下与 CELL1建立 RL1。 在 RNC 310请求所述 NODEB 322再新增承载 DCH和 E-DCH业务的第 二链路 RL2时， 所述 NODEB 322对 RL1和 RL2的 DCH业务进行更软合并。 所述 NODEB 322通过切换信息生成单元 323通知 RNC 310所述更软合并和新 增 E-DCH业务的信息。
具体上， 切换信息生成单元 323 用于在 RADIO LINK ADDITION RESPONSE 消息中生成同是一级字段的内容为 Combining 的 CHOICE Diversity Indication字段（即表示 DCH更软合并信息的字段）和 E-DCH FDD Information Response字段（即表示新增 E-DCH业务信息的字段）， 随后发送 携带 DCH更软合并信息和新增 E-DCH业务信息的 RADIO LINK ADDITION RESPONSE消息通知 RNC 310。
可以理解， 上述 NODEB 322也可以被称为第一基站， 上述 NODEB 321 也可以被称为第二基站。
所述 RADIO LINK ADDITION RESPONSE消息结构可参阅上述表三。 参阅图 7, 其是本发明移动通信切换方法第二实施方式。 UE 740在小区
730之间进行 DCH/E-DCH 业务切换的过程。 所述 UE 740在不同的两个 NODEB即 NODEB 721， 722之间进行移动通信切换， 所述 NODEB 721, 722 受 RNC 710控制。 NODEB 721下有 CELLO, NODEB 722下有 CELL1、 CELL2 和 CELL3。 参阅图 7和图 8， 所述实施方式包括步驟： 401、 402和 404: 同上述本发明移动通信切换方法第一实施方式， 不再重 复说明；
所不同的是对应上述第一实施方式步骤 403的本实施方式步骤 403，：
403，、 随着 UE 340的继续移动， 在阶段 3时， 又在 NODEB 1的 CELL2 下通过无线链路增加的信令过程成功增加了 RL2, 以及在 NODEB1的 CELL3 下通过无线链路增加的信令过程试图增加 RL3，但失败。其中 CELL2支持 DCH 和 E-DCH业务， 而 CELL3则可以是支持任何业务的小区， 比如仅支持 DCH 或 E-DCH业务，也可能都支持 DCH和 E-DCH业务； 成功增加 RL2以及增加 RL3失败的具体过程为：
403a'、 CELL2, CELL3分别和 UE 340探测到各自信号；
403b'、 CELL2, CELL3和 UE 340通过 NODEB 722报告 R C 710各自探 测结果；
403c'、 RNC 710向 NODEB 722发送增加链路 RL2和 RL3的请求；
403d，、 NODEB 322成功增加链路 RL2, 但增加 RL3失败；
403e，、 对所述 RL1和 RL2的 DCH业务进行更软合并；
403f，、 将链路建立结果通过在修改后的 RADIO LINK ADDITION FAILURE消息中携带不在同一分集指示选择字段的所述 DCH更软合并信息 和增加 E- DCH业务信息来通知 RNC 710, RNC 710据此进行通信。 在本实施 方式中， DCH更软合并信息和增加 E-DCH业务信息同是三级字段， 都属于二 级字段 Successful RL Information Response,,
指定关键 信元类型
标示 说明 关键性 性 信元 /组名 范围 和参考 ( IE
(Presence ( Semantics (Criticalit (Assigned
( IE/Group Name ) (Range) Type and
) Description ) y) Criticality
Reference )
)
CHOICE Cause Level M YES ignore
>General ―
»Cause M 9.2.1.6 ―
>RL Specific ―
»Unsuccessful RL l..<maxn EACH ignore Information Response oofRLs-1
>
»>RL ID M 9.2.1.53 ―
»>Cause M 9.2.1.6 ―
»Successfiil RL 0..<maxn EACH ignore Information Response oofRLs-2
>
>»RL ID M 9.2.1.53 ―
»>RL Set ID M 9.2.2.39 ―
»> Received Total Wide M 9.2.2.39A 一
Band Power
>»CHOICE Diversity M - Indication
»»Combining ―
»»>RL ID M 9.2.1.53 Reference RL ―
»»Non Combining ―
»»>DCH Information M 9.2.1.20C ―
Response
»>SSDT Support M 9.2.2.46 ―
Indicator
»>DL Power Balancing O 9.2.2.12C YES ignore Activation Indicator
»>E-DCH RL Set ID 0 RL Set ID YES ignore
9.2.2.39
»>E-DCH FDD DL 0 9.2.2.13DC YES ignore Control Channel
Information
»>Initial DL DPCH o DL DPCH YES ignore Timing Adjustment Timing
Adjustment
9.2.2.10A
»>E-DCH FDD o 9.2.2.13Db YES ignore Information Response 表四： 修改的 RADIO LINK ADDITION FAILURE消息筒略结构一 上表中， 对于 Successful RL Information Response二级字段下的 CHOICE Diversity Indication三级字段, 有 Combining和 Non Combining两个四级字段, 两个四级字段分别下辖 RL ID和 DCH Information Response五级字段。 其中 Combining字段用于告诉 RNC更软合并情况， Non Combining用于告诉 RNC DCH新建 /新增情况；
对于 E-DCH FDD Information Response三级字段， 也属于 Successful RL Information Response二级字段，用于告诉 C 710 UE 740要建立链路并在此 链路上进行 E-DCH业务。具体是 E-DCH业务如果和其他无线链路合并，则不 填写 E-DCH FDD Information Response字段， 反之 E-DCH如果不和其他无线 链路合并， 则填写 E-DCH FDD Information Response字段。 也就是说， 本发明实施方式在一条 RADIO LINK ADDITION FAILURE消 息中同时生成一个二级字段下的 CHOICE Diversity Indication 三级字段和 E-DCH FDD Information Response三级字段， 这样使无线链路 DCH合并 /不合 并与 E-DCH新建 /新增信息各自独立， 可以同时告诉 RNC 310更软合并和建 立 E-DCH业务的信息， 避免现有技术中只能在 CHOICE Diversity Indication 三级字段中选择一种四级字段而导致只能在更软合并和建立 E-DCH业务两个 都造成通信故障问题。所述通信故障是，保证 UE 740在不同 NODEB 721, 722 间的不同 CELL进行移动切换时保持通信正常和稳定。 本发明实施例可应用的场景不限于上述实施方式，凡是在需要进行更软合 并而且需要报告 R C建立 /新增相关业务的情况下， 都适用本发明， 避免上述 技术问题的发生。 比如， 成功增加包括 RL2在内的多个承载 E-DCH业务的无 线链路， 并且增加承载任何业务的 RL3失败情况下， 本发明也适用； 或者， 仅成功增加一个承载 E-DCH业务的 RL2,同时多个新增链路 RL3, RL4, RL5..... 增加 /新建失败， 本发明同样适用。 也就是， 至少成功增加一条承载 E-DCH业 务的无线链路，并且至少新增一条无线链路失败的情况下，都需要通过 RADIO LINK ADDITION FAILURE消息告诉 RNC, 因此都适用本发明。 所述的分属不同一级字段的 DCH更软合并信息和增加 E-DCH业务信息 也不仅限于上述表四的形式， 还可以是： 增加 E- DCH 业务信息用内容为 Combining的 CHOICE Diversity Indication三级字段表示， DCH更软合并信息 用 Successful RL Information Response二级字段外的 E-DCH FDD Information Response 三级字段表示； 或者， DCH更软合并信息用内容为 Combining 的 CHOICE Diversity Indication三级字段表示， E-DCH业务信息用 Successful RL Information Response二级字段外的任意五级 /四级 /三级 /二级 /一级字段表示。 而且， E-DCH FDD Information Response和 CHOICE Diversity Indication字段 在表中的相对位置可以任意设置。 本发明实施例移动通信切换方法第三实施方式与上述第二实施方式类似， 所不同之处在于： 在所述第三链路增加失败情况下，通知无线网络控制器所述 更软合并和增加 E-DCH业务的信息的方式有所更改， 具体如下表所示：
Figure imgf000019_0001
表五： 修改的 RADIO LINK ADDITION FAILURE消息筒略结构二 本实施方式的特别之处是： 通过在 RADIO LINK ADDITION FAILURE消 息中的分集指示选择字段下的 Combining字段同时携带所述 DCH更软合并信 息和增加 E-DCH业务信息来通知无线网络控制器。 如上表所示， Combining 四级字段下同时包括 RL ID和 E-DCH FDD Information Response五级字段，可 以同时通知无线网絡控制器 DCH业务更软合并和新增 E-DCH业务信息， 避 免出现现有技术没有同时通知无线网络控制器的技术问题，达到和前述实施方 式同样的技术效果。 参阅图 7,本发明还提供一种移动通信系统，包括 UE 740、NODEB 721, 722 和 RNC 710。所述 NODEB 722包括切换信息生成单元 723。所述 UE 740在不 同的两个 NODEB 721， 722之间进行移动通信切换， 所述两个 NODEB 即 NODEB 721, 722受 RNC 710控制。 NODEB 721下有 CELLO, NODEB 722下 有 CELLl、 CELL2和 CELL3。 其中 CELLO和 CELL2支持 DCH和 E-DCH业 务； CELL1仅支持 DCH业务; CELL3则不规定即可以支持任意业务。 所述 NODEB 722下已有仅承载 DCH业务的第一链路 RL1。 所述 UE 740 是在 NODEB 721的 CELLO下进行 DCH和 E-DCH业务时在 NODEB 722下与 CELL1建立 RL1。 在 RNC 710请求所述 NODEB 722再新增承载 DCH和 E-DCH业务的第 二链路 RL2时， 所述 NODEB 722对 RL1和 RL2的 DCH业务进行更软合并。 所述 NODEB 722通过切换信息生成单元 723通知 RNC 710所述更软合并和新 增 E-DCH业务的信息； 同时， 在 RNC 710请求所述 NODEB 722再新增承载 第三链路 RL3时，所述 NODEB 722通过切换信息生成单元 723通知 RNC 710 所述新增 RL3的信息。 具体上，在所述第三链路增加失败情况下，切换信息生成单元 723用于在 RADIO LINK ADDITION FAILURE 消息中生成同是三级字段的内容为 Combining的 CHOICE Diversity Indication字段和 E-DCH FDD Information Response字段， 随后发送携带 DCH更软合并信息和新增 E-DCH业务信息的 RADIO LINK ADDITION RESPONSE消息通知 RNC 710。 所述 RADIO LINK ADDITION FAILURE消息结构可参阅上述表四。 从以上可以看出，本发明实施例通过切换信息生成单元 723在一条 RADIO
LINK ADDITION FAILURE 消息中同时生成不在同一分集指示选择字段的 CHOICE Diversity Indication三級字段和 E-DCH FDD Information Response三 级字段， 并告诉 RNC 710更软合并和增加 E-DCH业务的信息， 避免现有技术 中只能在 CHOICE Diversity Indication三级字段中选择一种四级字段而导致只 能在更软合并和增加 E-DCH 业务两个信息中选择一个， 而导致的无论 CHOICE Diversity Indication字段无论如何填写都造成通信故障情况， 成功保 留可以正常通信的 RL2。
在另一实施方式中，切换信息生成单元 723用于生成包括 Combining字段 的 RADIO LINK ADDITION FAILURE 消息来通知无线网络控制器， 所述 Combining字段在分集指示选择字段下， 并同时携带所述 DCH更软合并信息 和增加 E-DCH业务信息。 可以理解， 本发明实施例还提供了一种移动通信基站， 包括： 链路管理单元， 用于受无线网络控制器控制， 管理仅承载 DCH业务的第 一链路， 增加承载 DCH和 E-DCH业务的第二链路和承载任何业务的第三链 路；
更软合并单元， 用于在所述笫三链路增加失败情况下，对所述第一链路和 第二链路的 DCH业务进行更软合并； 切换信息生成单元， 用于将 DCH更软合并信息和增加 E-DCH业务信息 同时通知给无线网络控制器。 上述 DCH更软合并和增加 E-DCH业务的信息可以通过无线链路增加失 败消息 RADIO LINK ADDITION FAILURE消息中非同一分集指示选择字段携 带来通知无线网络控制器内； 或者， 上述 DCH更软合并和增加 E-DCH业务的信息可以通过无线链路增加失 败消息 RADIO LINK ADDITION FAILURE消息中的分集指示选择字段下的 Combining字段同时携带来通知无线网絡控制器； 或者， 上述 DCH更软合并和增加 E-DCH业务的信息还可以通过无线链路增加 响应 RADIO LINK ADDITION RESPONSE消息中携带的分属不同一级字段携 带来通知无线网络控制器。 当通过无线链路增加失败消息 RADIO LINK ADDITION FAILURE消息的 非同一分集指示选择字段通知无线网络控制器时， 所述 DCH更软合并信息用 内容为 Combining的 CHOICE Diversity Indication三级字段表示， 所述增加 E-DCH 业务信息用属于与前述三级字段同一个二级字段的 E-DCH FDD Information Response三级字段表示。 以上对本发明所提供的一种移动通信切换方法及其系统进行了详细介绍， 说明只是用于帮助理解本发明的方法及其核心思想； 同时，对于本领域的一般 技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处， 综上所述， 本说明书内容不应理解为对本发明的限制。

Claims

权 利 要 求
1.一种移动通信切换的方法， 其特征在于， 包括步骤，
在已有仅承载 DCH业务的第一链路基础上， 增加承载 DCH和 E-DCH业 务的第二链路和承载任何业务的笫三链路； 在所述第三链路增加失败情况下 , 对所述第一链路和第二链路的 DCH业务进行更软合并；
将 DCH更软合并信息和增加 E-DCH业务信息同时通知给无线网络控制 器 , 所述无线网络控制器才艮据接收到的信息进行通信控制。
2.根据权利要求 1所述的移动通信切换的方法， 其特征在于，
所述 DCH更软合并和增加 E-DCH业务的信息通过无线链路增加失败消 息 RADIO LINK ADDITION FAILURE消息中非同一分集指示选择字段携带来 通知无线网络控制器内； 或者，
所述 DCH 更软合并和增加 E-DCH业务的信息通过无线链路增加响应 RADIO LINK ADDITION RESPONSE消息中携带的分属不同一级字段携带来 通知无线网络控制器。
3.根据权利要求 2所述的移动通信切换的方法，其特征在于， 当通过无线 链路增加失败消息 RADIO LINK ADDITION FAILURE消息通知无线网络控制 器时， 所述 DCH 更软合并信息用内容为 Combining 的 CHOICE Diversity Indication三级字段表示，所述增加 E-DCH业务信息用属于与前述三级字段同 一个二级字段的 E-DCH FDD Information Response三级字段表示。
4.根据权利要求 1所述的移动通信切换的方法， 其特征在于， 所述 DCH 更软合并和增加 E-DCH业务的信息通过无线链路增加失败消息 RADIO LINK ADDITION FAILURE消息中的分集指示选择字段下的 Combining字段同时携 带来通知无线网络控制器。
5.根据权利要求 2至 4任一项所述的移动通信切换的方法， 其特征在于， 所述将增加 E-DCH业务信息通知无线网络控制器的方式是:在 E-DCH业务和 其他无线链路合并情况下，空缺 E-DCH FDD Information Response字段，反之， 填写 E-DCH FDD Information Response字段。
6.根据权利要求 1至 4任一项所述的移动通信切换的方法， 其特征在于， 所述第一链路和第二链路基于同一基站建立；
所述在有仅承载 DCH业务的第一链路基础上增加承载 DCH和 E-DCH业 务的第二链路步骤之前还包括步骤：在与第一链路和第二链路不同基站的基站 下进行 DCH和 E-DCH业务。
7.—种移动通信系统， 包括第一基站和无线网络控制器， 其特征在于， 所述第一基站， 下辖有仅承载 DCH业务的笫一链路； 增加承载 DCH和 E-DCH业务的第二链路和承载任何业务的第三链路； 在所述第三链路增加失 败情况下， 对所述第一链路和第二链路的 DCH业务进行更软合并； 将 DCH 更软合并信息和增加 E-DCH业务信息同时通知给无线网络控制器；
所述无线网络控制器， 用于根据接收到的信息进行通信控制。
8.才艮据权利要求 Ί所述的移动通信系统， 其特征在于，
所述 DCH更软合并和增加 E-DCH业务的信息通过无线链路增加失败消 息 RADIO LINK ADDITION FAILURE消息中非同一分集指示选择字段携带来 通知无线网络控制器内； 或者，
所述 DCH更软合并和增加 E-DCH业务的信息通过无线链路增加响应 RADIO LINK ADDITION RESPONSE消息中携带的分属不同一级字段携带来 通知无线网络控制器。
9.根据权利要求 2所述的移动通信系统，其特征在于，通过无线链路增加 失败消息 RADIO LINKADDITION FAILURE消息通知无线网络控制器时， 所 述 DCH更软合并信息用内容为 Combining的 CHOICE Diversity Indication三级 字段表示， 所述增加 E-DCH业务信息用属于与前述三级字段同一个二级字段 的 E-DCH FDD Information Response三级字段表示。
10. 根据权利要求 1所述的移动通信系统，其特征在于，所述 DCH更软 合并和增加 E-DCH 业务的信息通过无线链路增加失败消息 RADIO LINK
ADDITION FAILURE消息中的分集指示选择字段下的 Combining字段同时携 带来通知无线网络控制器。
11. 根据权利要求 7至 10任一项所述的移动通信系统，其特征在于， 所 述系统还包括第二基站， 所述第二基站和用户设备进行 DCH和 E-DCH业务。
12. 一种移动通信基站， 其特征在于， 包括：
链路管理单元， 用于受无线网络控制器控制， 管理仅承载 DCH业务的第 一链路， 增加承载 DCH和 E-DCH业务的第二链路和承载任何业务的第三链 路；
更软合并单元， 用于在所述笫三链路增加失败情况下，对所述第一链路和 第二链路的 DCH业务进行更软合并；
切换信息生成单元， 用于将 DCH更软合并信息和增加 E-DCH业务信息 同时通知给无线网络控制器。
13. 根据权利要求 12所述的基站， 其特征在于，
所述 DCH更软合并和增加 E-DCH业务的信息通过无线链路增加失败消 息 RADIO LINK ADDITION FAILURE消息中非同一分集指示选择字段携带来 通知无线网絡控制器内； 或者，
所述 DCH更软合并和增加 E-DCH业务的信息通过无线链路增加失败消 息 RADIO LINK ADDITION FAILURE 消息中的分集指示选择字段下的 Combining字段同时携带来通知无线网络控制器； 或者，
所述 DCH更软合并和增加 E-DCH业务的信息通过无线链路增加响应 RADIO LINK ADDITION RESPONSE消息中携带的分属不同一级字段携带来 通知无线网络控制器；
当通过无线链路增加失败消息 RADIO LINK ADDITION FAILURE消息的 非同一分集指示选择字段通知无线网络控制器时， 所述 DCH更软合并信息用 内容为 Combining的 CHOICE Diversity Indication三级字段表示， 所述增加 E-DCH 业务信息用属于与前述三级字段同一个二级字段的 E-DCH FDD Information Response三级字段表示。
PCT/CN2007/001607 2006-08-31 2007-05-17 Procédé de transfert intercellulaire de communication mobile et système et station de base associés Ceased WO2008028386A1 (fr)

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