CN102036168A - Method and system for switching terminal under point to point load of multimedia broadcast multicast service - Google Patents
Method and system for switching terminal under point to point load of multimedia broadcast multicast service Download PDFInfo
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- CN102036168A CN102036168A CN2009100931712A CN200910093171A CN102036168A CN 102036168 A CN102036168 A CN 102036168A CN 2009100931712 A CN2009100931712 A CN 2009100931712A CN 200910093171 A CN200910093171 A CN 200910093171A CN 102036168 A CN102036168 A CN 102036168A
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Abstract
The invention discloses a method for switching a terminal under the point to point (PTP) load of a multimedia broadcast multicast service (MBMS). The method comprises the following steps that: when determining that user equipment (UE) meets a switching condition and a target cell is positioned in another radio network controller (RNC), a source RNC informs the RNC of information needed by UE switching under the PTP load of the MBMS; and the RNC establishes a radio resource in the RNC for the UE according to the information needed by the switching and transmits MBMS data received from the source RNC by the UE to the UE by using the radio resource. The invention also discloses a system for switching the terminal under the PTP load of the MBMS. When the UE which uses the PTP load receives the MBMS service, service interruption is prevented during cross-RNC movement, so that user feeling is enhanced.
Description
Technical field
The present invention relates to multimedia broadcast-multicast service (MBMS, Multimedia Broadcast Multicast Service) point-to-point (PTP, Point To Point) user terminal (UE under the carrying, User Equipment) spanning across wireless network controller (RNC, Radio Network Controller) handoff technique, relate in particular in a kind of code division multiple access (CDMA, Code Division Multiple Access) system the changing method and the system of terminal under the point-to-point carrying of multimedia broadcast-multicast service.
Background technology
In order to satisfy the demand of user to multimedia service, third generation partner program (3GPP, 3rd Generation Partnership Project) has proposed the solution of MBMS, can utilize conventional network resources efficiently.The MBMS class of business comprises multicast service, broadcasting service and reinforced broadcast service.The MBMS business has two kinds of radio bearer modes in universal terrestrial access network (UTRAN, Universal Terrestrial Radio Access Network) side: PTP mode and point-to-multipoint (PTM, Point To Multi-Point).The characteristics of PTP bearing mode are that each user monopolizes certain resource.The characteristics of PTM bearing mode are that a plurality of users share certain resource.RNC promptly uses PTP or PTM according to the bearing mode that it is suitable that certain algorithm is made a strategic decision out.Wherein, the PTP bearing mode is applicable to multicast service and reinforced broadcast service.For multicast service, UE at first needs and core net (CN, Core Network) setting up a signaling connects, after core net is carried out necessary processing, notice RNC carries out wireless resource allocation and foundation to UE, when RNC is that the dedicated signaling that can discharge this UE connected after RRM was finished in UE foundation.For reinforced broadcast service, can not exist any signaling to connect between UE and the core net.Like this, for the UE that is suitable for the MBMS business, may be between UE and the core net without any connecting.
The key property of UE is a mobility.When the UE that uses MBMS PTP carrying is striding RNC when moving, promptly need Serving RNC (source RNC) is changed to an other RNC (Target RNC), the existing protocol regulation is to be undertaken by SRNS Serving Radio Network Subsystem (SRNS, Serving Radio Network Subsystem) repositioning process.Fig. 1 is the flow chart of existing SRNS reorientation, and as shown in Figure 1, the SRNS repositioning process comprises: source RNC initiates RELOCATION REQUIRED message to CN, carries wireless resource information and the MBMS business information of UE.CN sends RELOCATION REQUEST message to Target RNC then, notifies Target RNC with MBMS business information and PTP RAB (RAB, the Radio Access Bearer) information of UE, and Target RNC is set up the PTP resource for UE this moment.After reorientation was finished, Target RNC was finished role's transfer, became the Serving RNC of UE, and was responsible for UE and carries out the MBMS business service, and source RNC discharges the resource of UE in this RNC.
When source RNC and Target RNC exist IUR (interface between the RNC) to connect, the participation that the mobility of MBMS PTP also need not above-mentioned SRNS repositioning process.Different only be that the reciprocal process of UE and RNC is different.
If there is not special-purpose signaling to connect between UE and the CN, then when UE moved to Target RNC, source RNC need at first discharge the PTP carrying of UE, and Target RNC is set up the PTP carrying for UE again then.Like this, at the UE that uses MBMS PTP carrying, when not having signaling to connect between UE and the core net, UE just can't switch by the SRNS reorientation of 3GPP regulation.When this thing happens, UE can only discharge the MBMS PTP carrying under the original RNC, rebulid the MBMSPTP carrying below new RNC, and this will cause the MBMS service disconnection of UE, is subjected to thereby influenced sense of experience of users.
Summary of the invention
In view of this, main purpose of the present invention is to provide the changing method and the system of terminal under the point-to-point carrying of a kind of multimedia broadcast-multicast service, can realize that the UE with MBMS PTP carrying strides the switching of RNC, and can not cause the interruption of the current MBMS business of UE.
For achieving the above object, technical scheme of the present invention is achieved in that
The changing method of terminal under the point-to-point carrying of a kind of multimedia broadcast-multicast service comprises:
Source radio network controller RNC determines that user terminal UE satisfies switching condition, and Target cell is when being arranged in another RNC, and described source RNC switches required information with the down described UE of the point-to-point PTP carrying of multimedia broadcast-multicast service MBMS and notifies described another RNC;
Described another RNC is that described UE is based upon the Radio Resource in this RNC according to the required information of described switching, and utilizes described Radio Resource that described UE is sent to described UE in the MBMS data that described source RNC receives.
Preferably, described source RNC determines that UE satisfies switching condition, comprising:
Described source RNC determines that described UE satisfies switching condition after receiving the 1B incident or 1D incident that described UE reports.
Preferably, described source RNC with the down described UE of MBMS PTP carrying switch required information by with described another RNC between IUR be connected and notify described another RNC.
Preferably, described source RNC information-bearing that described switching is required adheres in MBMS PTP reorientation message or MBMS and notifies described another RNC in the command messages.
Preferably, the required information of described switching comprises the wireless resource information of described UE, the current MBMS information that receives of described UE at least; Described wireless resource information comprises the radio resource control RRC configuration information of described UE at least, and described MBMS information comprises the sign of Temporary Mobile Group Identity TMGI and the PTP RAB RAB of MBMS at least.
Preferably, described another RNC is that described UE is based upon the Radio Resource in this RNC, comprising:
Described another RNC is that described UE sets up packet data convergence protocol PDPC actual resource, Radio Link control RLC actual resource and media access control MAC actual resource at least according to the wireless resource information of described UE, and is that described UE distributes new Radio Network Temporary Identifier RNTI; And by the described UE of UTRAN mobility information message informing.
The switched system of terminal under the point-to-point carrying of a kind of multimedia broadcast-multicast service comprises:
Determining unit is arranged in source RNC, is used for determining whether UE satisfies switching condition, determines that whether the Target cell that described UE switches is arranged in another RNC, triggers described first notification unit when all being;
First notification unit is arranged in described source RNC, is used for notifying described another RNC with the required information of the MBMS down described UE switching of point-to-point PTP carrying;
Set up the unit, be arranged in described another RNC, being used for according to the required information of described switching is that described UE is based upon the Radio Resource in this RNC; And
Transmitting element is used to utilize described Radio Resource that described UE is sent to described UE in the MBMS data that described source RNC receives.
Preferably, described determining unit determines that UE satisfies switching condition, comprising:
Described source RNC determines that described UE satisfies switching condition after receiving the 1B incident or 1D incident that described UE reports.
Preferably, described first notification unit switches required information with the down described UE of MBMS PTP carrying and is connected with IUR between described another RNC by described source RNC and notifies described another RNC.
Preferably, described first notification unit information-bearing that described switching is required adheres in MBMS PTP reorientation message or MBMS and notifies described another RNC in the command messages.
Preferably, the required information of described switching comprises the wireless resource information of described UE, the current MBMS information that receives of described UE at least; Described wireless resource information comprises the radio resource control RRC configuration information of described UE at least, and described MBMS information comprises the sign of Temporary Mobile Group Identity TMGI and the PTP RAB RAB of MBMS at least.
Preferably, the described unit of setting up is that described UE sets up PDPC actual resource, RLC actual resource and MAC actual resource at least according to the wireless resource information of described UE, and is that described UE distributes new RNTI; Described system also comprises second notification unit, is arranged in described another RNC, is used for described PDPC, RLC and MAC actual resource, and described new RNTI is by the described UE of UTRAN mobility information message informing.
Among the present invention, source RNC is detecting that UE satisfies switching condition and the Target cell that switches when being arranged in another RNC, source RNC is with the wireless resource information of UE and current MBMS business information notification target RNC in the lump, Target RNC rebulids Radio Resource according to the wireless resource information of UE for this UE, and give this UE by current Radio Resource with MBMS sending down service that UE received, thereby realize the MBMS of UE professional do not have interrupt switching.The present invention can receive MBMS when professional with the UE that uses the PTP carrying, strides RNC and moves and service disconnection do not occur, thereby improved user's impression.
Description of drawings
Fig. 1 is the flow chart of existing SRNS reorientation;
Fig. 2 is the flow chart of the changing method of terminal under the point-to-point carrying of multimedia broadcast-multicast service of the present invention;
Fig. 3 is another flow chart of the changing method of terminal under the point-to-point carrying of multimedia broadcast-multicast service of the present invention;
Fig. 4 is the composition structural representation of the switched system of terminal under the point-to-point carrying of multimedia broadcast-multicast service of the present invention.
Embodiment
Basic thought of the present invention is: source RNC is detecting that UE satisfies switching condition and the Target cell that switches when being arranged in another RNC, source RNC is with the wireless resource information of UE and current MBMS business information notification target RNC in the lump, Target RNC rebulids Radio Resource according to the wireless resource information of UE for this UE, and give this UE by current Radio Resource with MBMS sending down service that UE received, thereby realize the MBMS of UE professional do not have interrupt switching.
For making the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
Fig. 2 is the flow chart of the changing method of terminal under the point-to-point carrying of multimedia broadcast-multicast service of the present invention, as shown in Figure 2, among the present invention, UE uses the PTP bearing mode receiving the MBMS business, exists IUR to connect between source RNC and the Target RNC, promptly connects by the IUR interface between source RNC and the Target RNC, UE moves in the sub-district under the Target RNC, the PTP that source RNC is initiated to Target RNC switches, and in this process, UE receives the MBMS business and do not interrupt.The changing method of terminal may further comprise the steps under the point-to-point carrying of multimedia broadcast-multicast service of the present invention:
Step 201:, between CN and RNC (source RNC), set up the MBMS service bearer according to the flow process of 3GPP regulation.
Step 202: according to the flow process of 3GPP regulation, source RNC is that UE sets up MBMS PTP carrying, and UE begins to receive the MBMS business.At this moment, between UE and the CN without any dedicated signaling connect.
Step 203: according to the flow process of 3GPP regulation, UE sets up IUR at source RNC with Target RNC and is connected, and UE is in macro diversity status.
Step 204: because UE is in the sub-district under the Target RNC, therefore, UE reports 1B or 1D incident by measurement report (Measurement Report).
Step 205: source RNC judges UE and does not re-use Radio Resource in this RNC, makes the MBMS PTP decision-making that switches to Target RNC, and selects a Target RNC.Source RNC receives the measurement report 1D of UE, the DRNC sub-district becomes best cell, perhaps 1B incident, and this RNC cell quality is too poor, judge that UE can not re-use the resource in the sub-district this RNC under, source RNC selects a Drift RNC as the Target RNC that switches (RNC that Target cell is affiliated).Here, the mode of select target RNC is identical with the mode of SRNS repositioning process select target RNC.
Step 206: source RNC organizes the wireless resource information of UE in this RNC and the MBMS business information that is receiving, here, at least the Radio Resource control (RRC that comprises UE in the wireless resource information, Radio Resource Control) configuring condition, the MBMS business information comprises professional Temporary Mobile Group Identity (TMGI, Temporary Mobile Group Identify) and PTP RAB ID at least.Source RNC sends to Target RNC with these information-bearings in MBMS PTP re-positioning request (MBMS PTP RELOCATION REQUEST) message.
Step 207: after Target RNC is received MBMS PTP RELOCATION REQUEST message, detect the MBMS business that UE adds according to wherein MBMS business information and in this RNC, start.Target RNC is according to the wireless resource information in the received MBMS PTP RELOCATION REQUEST message, for UE is based upon resource in this RNC, at least comprise PDCP (PDCP, Packet Data Convergence Protocol) actual resource, Radio Link control (RLC, Radio LinkControl) actual resource and medium access control (MAC, Medium Access Control) actual resource.Target RNC sends UTRAN mobility information (UTRAN Mobility information) message to UE, to be PDCP actual resource, RLC actual resource, the MAC actual resource of described UE distribution, and, UE is notified to this UE for distributing new Radio Network Temporary Identifier (RNTI, Radio Network Temporary Identity).
Step 208: Target RNC is received from the UTRAN mobility information of UE and is confirmed (UTRAN Mobility information confirm) message, Target RNC will be dealt into from the MBMS business datum of IU mouth on the PDCP entity of setting up into UE, and UE begins to receive the MBMS business datum from Target RNC.
Step 209: this moment, Target RNC changed the role, became current RNC for the UE service.
Step 210: Target RNC returns MBMS PTP reorientation to source RNC and confirms (MBMS PTP RELOCATION ACKNOWLEDGE) message, expression PTP handover success.
Step 211: after source RNC receives handover success, discharge UE all resources in this RNC.
In above-mentioned flow process, if Target RNC can not become the Serving RNC of UE, for example allocation of radio resources failure in the step 207, perhaps, Target RNC is not received the UTRAN Mobility information confirm message of UE etc. in the step 208, and then Target RNC need return switch failure information MBMS PTP reorientation failure (MBMS PTP RELOCATION FAILURE) message to source RNC.Source RNC confirms current handoff failure after receiving MBMS PTP RELOCATION FAILURE message.
Fig. 3 is another flow chart of the changing method of terminal under the point-to-point carrying of multimedia broadcast-multicast service of the present invention, and as shown in Figure 3, the changing method of terminal may further comprise the steps under the point-to-point carrying of multimedia broadcast-multicast service of the present invention:
Step 301:, between CN and RNC, set up the MBMS service bearer according to the flow process of 3GPP regulation
Step 302: according to the flow process of 3GPP regulation, source RNC is that UE sets up MBMS PTP carrying, and UE begins to receive the MBMS business.Between UE and the CN without any dedicated signaling connect.
Step 303: according to the flow process of 3GPP regulation, UE sets up IUR at source RNC with Target RNC and is connected, and UE is in macro diversity status.
Step 304:UE reports 1B or 1D incident by measurement report.UE moves in the sub-district under the Target RNC, no longer be fit to communication at the signal that detects the sub-district under the RNC of source, and the sub-district under the Target RNC is a suitable cell, then reports source RNC by measurement report.
Step 305: source RNC judges the Radio Resource that UE does not re-use sub-district among this RNC, makes the MBMS PTP decision-making that switches to Target RNC, and selects a Target RNC.
Above-mentioned step 301 is identical respectively to the processing mode of step 205 with aforesaid step 201 to the processing mode of step 305.
Step 306: source RNC organizes the wireless resource information of UE in this RNC and the MBMS business information that is receiving, and here, wireless resource information comprises the RRC configuring condition of UE at least, and the MBMS business information comprises professional TMGI and PTP RAB ID at least.Source RNC adheres to these information-bearings in order (the MBMS ATTACH COMMAND) message in MBMS and sends to Target RNC.
Step 307: after Target RNC was received MBMS ATTACH COMMAND message, the MBMS business that detects the UE adding started in this RNC.Target RNC is according to the wireless resource information in the MBMS ATTACH COMMAND message, for UE is based upon resource in this RNC, comprises PDPC actual resource, RLC actual resource and MAC actual resource at least, and is that UE distributes new RNTI.Target RNC sends to UE by UTRAN Mobility information message with above-mentioned actual resource information and new RNTI.
Step 308: Target RNC is received the UTRAN Mobility information confirm message from UE, and Target RNC will be dealt into from the MBMS business datum of IU mouth on the PDCP entity of setting up into UE, and UE begins to receive the MBMS business datum from Target RNC.
Step 309: this moment, Target RNC changed the role, became the Serving RNC of UE.
Step 310: source RNC sends MBMS and adheres to order in step 306, directly discharges UE all resources in this RNC.
In above-mentioned flow process, if Target RNC can not become the Serving RNC of UE, for example allocation of radio resources failure in the step 307, perhaps, Target RNC is not received the UTRANMobility information confirm message of UE etc. in the step 308, can return handoff failure to source RNC, directly discharge the resource of having distributed in this RNC.
Fig. 4 is the composition structural representation of the switched system of terminal under the point-to-point carrying of multimedia broadcast-multicast service of the present invention, as shown in Figure 4, the switched system of terminal comprises determining unit 40, first notification unit 41, sets up unit 42 and transmitting element 43 under the point-to-point carrying of multimedia broadcast-multicast service of the present invention, wherein, determining unit 40 is arranged in source RNC, be used for determining whether UE satisfies switching condition, determine that whether the Target cell that described UE switches is arranged in another RNC, triggers first notification unit 41 when all being; First notification unit 41 is arranged in described source RNC, is used for notifying described another RNC with the required information of the MBMS down described UE switching of point-to-point PTP carrying; Set up unit 42 and be arranged in described another RNC, being used for according to the required information of described switching is that described UE is based upon the Radio Resource in this RNC; Transmitting element 43 is used to utilize described Radio Resource that described UE is sent to described UE in the MBMS data that described source RNC receives.Wherein, determining unit 40 determines that UE satisfy switching condition, comprising: described source RNC determines that described UE satisfies switching condition after receiving the 1B incident or 1D incident that described UE reports.Switch the current MBMS information that receives of wireless resource information, described UE that required information comprises described UE at least; Described wireless resource information comprises the radio resource control RRC configuration information of described UE at least, and described MBMS information comprises the sign of Temporary Mobile Group Identity TMGI and the PTP RAB RAB of MBMS at least.
First notification unit 41 switches required information with the down described UE of MBMS PTP carrying and is connected with IUR between described another RNC by described source RNC and notifies described another RNC.
First notification unit 41 information-bearing that described switching is required adheres in MBMS PTP reorientation message or MBMS notifies described another RNC in the command messages.
Setting up unit 42 is that described UE sets up PDPC actual resource, RLC actual resource and MAC actual resource at least according to the wireless resource information of described UE, and is that described UE distributes new RNTI; As shown in Figure 4, the switched system of terminal also comprises second notification unit 44 under the point-to-point carrying of multimedia broadcast-multicast service of the present invention, be arranged in described another RNC, be used for described PDPC, RLC and MAC actual resource, described new RNTI is by the described UE of UTRAN mobility information message informing.
Those skilled in the art are to be understood that, the switched system of terminal is to design for the changing method of realizing terminal under the point-to-point carrying of aforesaid multimedia broadcast-multicast service under the point-to-point carrying of multimedia broadcast-multicast service shown in Figure 4, the function of each processing unit can be with reference to the description of preceding method and understand in the system shown in Figure 4, the function of each processing unit can realize by the program that runs on the processor, also can realize by concrete logical circuit.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (12)
1. the changing method of terminal under the point-to-point carrying of multimedia broadcast-multicast service is characterized in that, comprising:
Source radio network controller RNC determines that user terminal UE satisfies switching condition, and Target cell is when being arranged in another RNC, and described source RNC switches required information with the down described UE of the point-to-point PTP carrying of multimedia broadcast-multicast service MBMS and notifies described another RNC; And
Described another RNC is that described UE is based upon the Radio Resource in this RNC according to the required information of described switching, and utilizes described Radio Resource that described UE is sent to described UE in the MBMS data that described source RNC receives.
2. method according to claim 1 is characterized in that, described source RNC determines that UE satisfies switching condition, comprising:
Described source RNC determines that described UE satisfies switching condition after receiving the 1B incident or 1D incident that described UE reports.
3. method according to claim 1 is characterized in that, described source RNC with the down described UE of MBMS PTP carrying switch required information by with described another RNC between IUR be connected and notify described another RNC.
4. method according to claim 3 is characterized in that, described source RNC information-bearing that described switching is required adheres in MBMS PTP reorientation message or MBMS notifies described another RNC in the command messages.
5. according to each described method in the claim 1 to 4, it is characterized in that the required information of described switching comprises the wireless resource information of described UE, the current MBMS information that receives of described UE at least; Described wireless resource information comprises the radio resource control RRC configuration information of described UE at least, and described MBMS information comprises the sign of Temporary Mobile Group Identity TMGI and the PTP RAB RAB of MBMS at least.
6. method according to claim 5 is characterized in that, described another RNC is that described UE is based upon the Radio Resource in this RNC, comprising:
Described another RNC is that described UE sets up packet data convergence protocol PDPC actual resource, Radio Link control RLC actual resource and media access control MAC actual resource at least according to the wireless resource information of described UE, and is that described UE distributes new Radio Network Temporary Identifier RNTI; And by the described UE of UTRAN mobility information message informing.
7. the switched system of terminal under the point-to-point carrying of multimedia broadcast-multicast service is characterized in that, comprising:
Determining unit is arranged in source RNC, is used for determining whether UE satisfies switching condition, determines that whether the Target cell that described UE switches is arranged in another RNC, triggers described first notification unit when all being;
First notification unit is arranged in described source RNC, is used for notifying described another RNC with the required information of the MBMS down described UE switching of point-to-point PTP carrying;
Set up the unit, be arranged in described another RNC, being used for according to the required information of described switching is that described UE is based upon the Radio Resource in this RNC; And
Transmitting element is used to utilize described Radio Resource that described UE is sent to described UE in the MBMS data that described source RNC receives.
8. system according to claim 7 is characterized in that, described determining unit determines that UE satisfies switching condition, comprising:
Described source RNC determines that described UE satisfies switching condition after receiving the 1B incident or 1D incident that described UE reports.
9. system according to claim 7 is characterized in that, described first notification unit switches required information with the down described UE of MBMSPTP carrying and is connected with IUR between described another RNC by described source RNC and notifies described another RNC.
10. system according to claim 9 is characterized in that, described first notification unit information-bearing that described switching is required adheres in MBMS PTP reorientation message or MBMS notifies described another RNC in the command messages.
11., it is characterized in that the required information of described switching comprises the wireless resource information of described UE, the current MBMS information that receives of described UE at least according to each described system in the claim 7 to 10; Described wireless resource information comprises the radio resource control RRC configuration information of described UE at least, and described MBMS information comprises the sign of Temporary Mobile Group Identity TMGI and the PTP RAB RAB of MBMS at least.
12. system according to claim 11 is characterized in that, the described unit of setting up is that described UE sets up PDPC, RLC and MAC actual resource at least according to the wireless resource information of described UE, and is that described UE distributes new RNTI; Described system also comprises second notification unit, is arranged in described another RNC, is used for described PDPC actual resource, RLC actual resource and MAC actual resource, and described new RNTI is by the described UE of UTRAN mobility information message informing.
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| CN115038048A (en) * | 2021-03-05 | 2022-09-09 | 维沃移动通信有限公司 | Method for receiving multicast service, method for configuring multicast service, terminal and network side equipment |
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Application publication date: 20110427 |