CN101772146A - Method for synchronizing multimedia broadcast/multicast service among radio network controllers - Google Patents
Method for synchronizing multimedia broadcast/multicast service among radio network controllers Download PDFInfo
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- CN101772146A CN101772146A CN200810247371A CN200810247371A CN101772146A CN 101772146 A CN101772146 A CN 101772146A CN 200810247371 A CN200810247371 A CN 200810247371A CN 200810247371 A CN200810247371 A CN 200810247371A CN 101772146 A CN101772146 A CN 101772146A
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Abstract
The embodiment of the invention discloses a method for synchronizing a multimedia broadcast/multicast service (MBMS) among radio network controllers (RNC). Each RNC that a service area covered by the current MBMS service belongs to realizes MBMS service synchronization according to MBMS service synchronization parameters. The method comprises that: a serving radio network controller (SRNC) computes the MBMS service synchronization parameters when the service area covered by the current MBMS service is not intersect with the service area covered by the SRNC; and the SRNC sends the computed MBMS service synchronization parameters to each RNC that the service area covered by the current MBMS service belongs to. By application of the method, when the MBMS service is performed in the service area outside the service area of SRNC, each RNC can still realize synchronization the MBMS service.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to a kind of at each radio network controller (Radio Network Controller, RNC) synchronized multimedia broadcast group broadcast between (MultimediaBroadcast Multicast Service, MBMS) Ye Wu method.
Background technology
When realizing that in mobile communication system MBMS is professional, require to realize the MBMS business synchronously between each RNC in the mobile communication system, that is, be equipped with a RNC in same Connection Frame Number (Connection Frame number, CFN) moment broadcasting MBMS business datum.
At present, the RNC in the mobile communication system be divided into Serving RNC (Service RNC, SRNC) and Drift Radio Network Controller (Drift RNC, DRNC) two classes.The part of SRNC comprises shares packet data protocol convergence protocol (Packet Data Convergence Protocol, PDCP) entity and shared Radio Link control (Radio Link Control, RLC) entity, each sub-district that DRNC administered directly is controlled by SRNC, therefore, send MBMS service synchronization parameter by SRNC to each DRNC, each RNC (comprising SRNC and DRNC) realizes the synchronous of MBMS business according to described MBMS service synchronization parameter.Below in conjunction with in 1 pair of prior art of accompanying drawing between each RNC synchronously the method for MBMS business illustrated.
Fig. 1 be in the prior art between each RNC the synchronous system schematic of MBMS business.
System shown in Figure 1 comprises the sub-district 1 of core net (CN), SRNC, DRNC, NodeB1 administration, the sub-district 2 of NodeB2 administration and the sub-district 3 of NodeB3 administration.
Wherein, DRNC comprises MBMS chain of command entity, MBMS PDCP entity, MBMS RLC entity, Iur FP interface, MAC_m entity and Frame Protocol (Frame Protocol, FP) entity; SRNC comprises MBMS chain of command entity, shares MBMS PDCP, shares MBMS RLC, Iur FP interface, MAC_m entity and FP entity; NodeB1～NodeB3 includes FP entity and PHY entity.DRNC and SRNC are by MBMS chain of command entity interaction MBMS traffic signaling message, by IurFP interactive interfacing MBMS business datum; DRNC and SRNC all send to corresponding N odeB by MAC_m and FP entity with the MBMS business datum.
When system shown in Figure 1 realizes that MBMS is professional, the coverage that the MBMS business is covered can cover the coverage that a plurality of RNC covers, for this situation, require each RNC to realize the MBMS business synchronously, promptly, require each RNC (comprising SRNC and DRNC) to adopt identical physical channel, transmission channel, Radio Resource (RB) configuration, and send the MBMS business datum, thereby realize realizing synchronously same MBMS business at synchronization.
Each RNC realizes that the scheme of MBMS service synchronization is at present: judge by SRNC the MBMS session foundation of CN transmission asks SA tabulation of carrying in (MBMS Session Start) message and the SA that this SRNC self stores to tabulate whether there is common factor, if, illustrate that there is the common factor coverage in the coverage that the professional coverage that covers of current MBMS and this SRNC self are covered, then SRNC need be to described common factor coverage described each Cell Broadcast CB MBMS business datum; If not, illustrate that there is not the common factor coverage in the coverage that the professional coverage that covers of current MBMS and this SRNC self are covered, then SRNC does not need the broadcasting MBMS business datum.
At present, when only there is the common factor coverage in SRNC in the coverage that coverage and this SRNC of the professional covering of current MBMS self are covered, on the one hand by creating the MAC_m entity, calculating MBMS service synchronization parameter by the MAC_m entity, this MBMS service synchronization parameter is issued each DRNC, by creating the FP entity, utilize each Cell Broadcast CB MBMS business datum of FP entity under the common factor coverage on the other hand according to described MBMS service synchronization parameter.When there is not the common factor coverage in the coverage that the coverage and the SRNC of the professional covering of current MBMS self are covered, this SRNC need not the broadcasting MBMS business datum, therefore, this SRNC can not create the FP entity, and this SRNC can not create the described MAC_m entity that is used to calculate MBMS service synchronization parameter yet.
Particularly, Fig. 2 is the method flow diagram of system shown in Figure 1 synchronous MBMS business between each RNC, and as shown in Figure 2, this method comprises:
Step 201:CN sends MBMS Session Start message to DRNC and SRNC, carries coverage (SA) tabulation in MBMS Session Start message.
Whether the SA tabulation of carrying in the MBMS SESSION START message of step 202:SRNC judgement from CN exists common factor with the SA tabulation of this SRNC self storage, if, execution in step 203, otherwise, this SRNC is not to the Cell Broadcast CB MBMS business datum of himself administering, and do not calculate MBMS service synchronization parameter, process ends.
In this step, if the SA that carries in MBMS SESSION START message tabulation is occured simultaneously with the SA tabulation existence of this SRNC self storage, illustrate that then there is intersection the coverage that coverage that current MBMS business is covered and SRNC are covered, promptly there is the common factor coverage, otherwise, illustrate that above-mentioned two coverages do not have intersection, promptly do not exist the common factor coverage.
MBMS service synchronization parameter in this step comprises CFN information and transformat (TransportFormat, TF) information.
In this step, usually, SRNC and each DRNC send MBMS business datum and corresponding C FN information in the moment of CFN information indication to the NodeB of administration separately, each NodeB goes out corresponding System Frame Number (System Frame number according to the CFN information calculations that receives, SFN) information issues the MBMS business datum in the terminal (UE) of the moment of corresponding SFN information indication in each sub-district of this NodeB administration.
As seen from the above technical solution, when the MBMS business is not when carrying out between all RNC, the coverage of MBMS business beyond the coverage that SRNC covered then might occur carries out, at this moment, there is not common factor in the coverage that professional coverage that covers of MBMS and SRNC are covered, according to method illustrated in figures 1 and 2, in this case, SRNC does not calculate MBMS service synchronization parameter.Because each DRNC needs to realize the synchronous of MBMS business according to the MBMS service synchronization parameter from SRNC, therefore, when carry out the coverage beyond the coverage of MBMS business at SRNC, because each DRNC owing to can't obtain MBMS service synchronization parameter and can't realize the synchronous of MBMS business from SRNC.
Summary of the invention
In view of this, the purpose of the embodiment of the invention be to provide a kind of between each radio network controller the method for synchronizing multimedia broadcast/multicast service, so that the coverage of MBMS business beyond the coverage of SRNC be when carrying out, each RNC still can realize the MBMS business synchronously.
For achieving the above object, the technical scheme of the embodiment of the invention specifically is achieved in that
A kind of between each radio network controller (RNC) the method for synchronized multimedia broadcast group broadcast MBMS business, each RNC under the coverage that current MBMS business is covered realizes the MBMS service synchronization according to MBMS service synchronization parameter, this method also comprises:
SRNC does not exist when occuring simultaneously in the coverage that coverage that current MBMS business is covered and this SRNC self are covered, calculate MBMS service synchronization parameter, the MBMS service synchronization parameter that calculates is issued each RNC under the coverage that current MBMS business covered.
As seen from the above technical solution, because when there is not common factor in the coverage that SRNC self is covered with this RNC in coverage that current MBMS business is covered, still calculate MBMS service synchronization parameter, and the MBMS service synchronization parameter that calculates issued each RNC under the coverage that current MBMS business covered, therefore, when carry out the coverage beyond the coverage of MBMS business at SRNC, each RNC except that SRNC still can obtain MBMS service synchronization parameter, therefore, each RNC still can realize the synchronous of MBMS business.
Description of drawings
Fig. 1 be in the prior art between each RNC the synchronous system schematic of MBMS business;
Fig. 2 is the method flow diagram of system shown in Figure 1 synchronous MBMS business between each RNC;
Fig. 3 is the general flow chart of the present invention's method of synchronous MBMS business between each RNC;
Fig. 4 is first method flow diagram of the present invention's synchronous MBMS business between each RNC;
Fig. 5 is second method flow diagram of the present invention's synchronous MBMS business between each RNC.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Core concept of the present invention is: SRNC does not exist when occuring simultaneously in the coverage that coverage that current MBMS business is covered and this RNC self are covered, calculate MBMS service synchronization parameter, the MBMS service synchronization parameter that calculates is issued each RNC under the coverage that current MBMS business covered.
Because in the prior art, SRNC does not exist when occuring simultaneously in the coverage that coverage that current MBMS business is covered and this RNC self are covered, do not calculate MBMS service synchronization parameter, caused each DRNC can't obtain MBMS service synchronization parameter, therefore, the coverage that the present invention self is covered by the coverage that covered in current MBMS business and this RNC does not exist when occuring simultaneously, SRNC still calculates MBMS service synchronization parameter, thereby solved the technical problem that each DRNC can't obtain MBMS service synchronization parameter.
Fig. 3 is the general flow chart of the present invention's method of synchronous MBMS business between each RNC, and as shown in Figure 3, this method comprises:
Step 301, SRNC is received from the MBMS SESSION START message of CN.
Carry MBMS service region information unit (MBMS Service Area IE, i.e. SA tabulation) in the MBMS SESSION START message in this step.
Step 302, SRNC judges whether the coverage that the professional coverage that covers of current MBMS and this SRNC self cover exists common factor, if, execution in step 303, otherwise, execution in step 305.
In this step, SRNC can the SA that carry in the MBMS SESSION START message tabulates and the SA tabulation of this SRNC self storage by comparing, when there is common factor in above-mentioned two SA tabulation, judge to exist between the coverage that coverage that current MBMS covers and this SRNC administered and occur simultaneously, do not exist when occuring simultaneously in above-mentioned two SA tabulation, judge between the coverage that coverage that current MBMS covers and this SRNC administered and do not have common factor.
Step 303, SRNC creates the FP entity that is used to calculate the MAC entity of MBMS service synchronization parameter and is used for the broadcasting MBMS business datum.
Step 304, SRNC calculates MBMS service synchronization parameter by the MAC entity of creating, and the MBMS service synchronization parameter that calculates issued other each RNC under the professional coverage that covers of current MBMS, SRNC and described other each RNC are according to described MBMS service synchronization parameter, utilization FP entity separately is to the coverage broadcasting MBMS business datum of administering separately, realize the MBMS service synchronization, process ends.
Step 305, SRNC creates the MAC entity that is used to calculate MBMS service synchronization parameter.
Step 306, SRNC calculates MBMS service synchronization parameter by the MAC entity of creating, and the MBMS service synchronization parameter that calculates issued other each RNC under the professional coverage that covers of current MBMS, described other each RNC are according to described MBMS service synchronization parameter, utilization FP entity separately is to the coverage broadcasting MBMS business datum of administering separately, realize the MBMS service synchronization, process ends.
In the method shown in Figure 3, do not exist when occuring simultaneously, calculate the MBMS service synchronization parameter difference on opportunity, provide two embodiment and respectively the present invention is illustrated according to SRNC in the coverage that coverage that current MBMS business is covered and this RNC self are covered.In first embodiment, SRNC calculates MBMS service synchronization parameter immediately after judging coverage that coverage that current MBMS business covered and this RNC self covered and not having common factor.In a second embodiment, SRNC just calculates MBMS service synchronization parameter after receiving the request of obtaining MBMS service synchronization parameter.
Below among each embodiment: RNC creates the MBMS_IU entity and is meant, be used to realize tunnel protocol user plane (GPRS Tunneling Protocol-User Plane inner establishment of this RNC, GTPU) entity of protocol processes process, PDCP protocol processes process and rlc protocol processing procedure, the MBMS_IU entity of establishment is used to set up MBMS service surface information; RNC creates the MBMS_IUB entity and is meant, creates the entity that is used for setting up at all broadcast cells of this RNC administration the processing procedure of the Common transport channel (MTCH channel) that is used for transferring MBMS service data; The MBMS_IUR entity that RNC creates carries out local resource allocation and is meant, in transport layer address (Transport Layer Address), the binding logo resources such as (Binding ID) of this RNC internal distribution IUR_FP protocol entity correspondence; The MBMS_IUR that SRNC creates carries out allocation of radio resources and is meant, in resource informations such as the professional corresponding frequency of this SRNC internal distribution MBMS, time slot, sign indicating numbers.
First embodiment:
Fig. 4 is first method flow diagram of the present invention's synchronous MBMS business between each RNC, and as shown in Figure 4, this method comprises:
Step 401, SRNC receives the MBMS SESSION START message from CN, and judges between the coverage that coverage that current MBMS covers and this SRNC administered according to MBMS SESSION START message and not have common factor.
Do not comprise the SA of this SRNC configuration in the SA tabulation of carrying in the MBMS SESSION START message in this step, promptly do not have common factor between the coverage that the coverage that current MBMS covered and this SRNC are administered.
Step 402, SRNC carries out MBMS_IU and sets up process.
In this step, RNC creates the MBMS_IU entity, sets up MBMS service surface information.
Step 403, SRNC sets up the MAC entity according to the MBMS business information of carrying in the MBMS SESSION START message.
MAC entity in this step is the MAC_m entity that is used to calculate MBMS service synchronization parameter, and described MBMS service synchronization parameter comprises CFN information and TF information.
Step 404, SRNC returns MBMS SESSION START RESPONSE message to CN.
In the method shown in Figure 4, because when not having common factor between the coverage of being administered with this SRNC in coverage that current MBMS covered, still calculated MBMS service synchronization parameter in the step 403, therefore, SRNC can provide MBMS service synchronization parameter for each RNC, thereby makes each RNC can realize the MBMS service synchronization.
Second embodiment:
Fig. 5 is second method flow diagram of the present invention's synchronous MBMS business between each RNC, and as shown in Figure 5, this method comprises:
In this step, CN sends the sequencing indefinite of MBMS SESSION START message to SRNC and DRNC.SRNC and DRNC receive the MBMS SESSIONSTART message from CN respectively.
This step is with step 402.
In this step, DRNC creates the MBMS_IU entity, sets up MBMS service surface information.
In this step, carry in the MBMS SYNC BEARER SETUP REQ message Temporary Mobile Group Identity (Temporary Mobile Group Identity, TMGI), the information such as IUR service surface address of DRNC.
MAC entity in this step is used for determining MBMS service synchronization parameters such as CFN information, TF information, uses when these MBMS service synchronization parameters are used for for the preceding MBMS of commentaries on classics of SRNC data.
Carry the local resource information of MBMS service surface information and described RNC in the MBMS SYNC BEARER SETUP REQ message.
Step 504 and step 502～and 503 owing to carry out on different entities, therefore, step 504 is unrestricted with the sequencing of step 502～503.But step 507 needs to carry out after step 506.
In this step, SRNC creates the MBMS_IUR entity, and the MBMS_IUR entity carries out local resource allocation and distributes and Radio Resource.
In this step, carry IUR service surface address and the resource information of SRNC in the MBMS SYNC BEARER SETUP RSP message.
Step 510 after DRNC receives MBMS SYNC BEARER SETUP RSP message, is carried out MBMS_IUB and is set up process.
In this step, RNC creates the MBMS_IUB entity, sets up the MTCH channel that is used for transferring MBMS service data at all broadcast cells of this RNC administration.
As seen, because prior art illustrated in figures 1 and 2 requires must be under the situation of SRNC broadcasting MBMS business datum, just set up the MAC entity and calculate MBMS service synchronization parameter, this does not solve the problem how SRNC each DRNC when broadcasting MBMS business datum not obtains MBMS service synchronization parameter and then realize the MBMS service synchronization, the present invention does not exist when occuring simultaneously in the coverage that coverage that current MBMS business is covered and this RNC self are covered, still calculate MBMS service synchronization parameter, thereby in the MBMS business under situation about broadcasting between part RNC, can provide MBMS service synchronization parameter for DRNC, thereby guarantee the synchronous of MBMS business, solved in esse technical problem in the prior art, and realized simple.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for a synchronized multimedia broadcast group broadcast MBMS business between each radio network controller (RNC), each RNC under the coverage that current MBMS business is covered realizes the MBMS service synchronization according to MBMS service synchronization parameter, it is characterized in that this method comprises:
SRNC does not exist when occuring simultaneously in the coverage that coverage that current MBMS business is covered and this SRNC self are covered, calculate MBMS service synchronization parameter, the MBMS service synchronization parameter that calculates is issued each RNC under the coverage that current MBMS business covered.
2. the method for claim 1 is characterized in that,
SRNC receives the MBMS session and sets up request message MBMS SESSION START, judge whether coverage SA tabulation of carrying in the MBMS SESSION START message and the SA tabulation that this SRNC self stores exist common factor, if not, then SRNC judges the coverage that coverage that current MBMS business covered and this SRNC self covered and does not have common factor.
3. method as claimed in claim 2 is characterized in that, described calculating MBMS service synchronization parameter comprises:
After there is not common factor in the SA tabulation that SRNC judges the SA tabulation of carrying in the MBMS SESSION START message and this SRNC self storage, set up the MAC entity that is used to calculate MBMS service synchronization parameter according to the MBMS business information of carrying in the MBMS SESSION START message;
Described calculating MBMS service synchronization parameter comprises:
Calculate MBMS service synchronization parameter by described MAC entity.
4. method as claimed in claim 3, it is characterized in that, there is not the back of occuring simultaneously in the SA tabulation that SRNC judges the SA tabulation of carrying in the MBMS SESSIONSTART message and this SRNC self storage, set up be used to calculate the MAC entity of MBMS service synchronization parameter before, this method further comprises:
SRNC sets up MBMS service surface information by creating the MBMS_IU entity.
5. method as claimed in claim 2 is characterized in that, described SRNC does not exist when occuring simultaneously in the coverage that coverage that current MBMS business is covered and this RNC self are covered, and calculates MBMS service synchronization parameter and comprises:
Described each RNC sends the request message that obtains MBMS service synchronization parameter to SRNC after the MBMS SESSION START message of receiving from core net CN;
SRNC is after receiving the request message that obtains MBMS service synchronization parameter, and the MBMS business information of carrying in the MBMS SESSION START message that receives according to this SRNC is set up the MAC entity that is used to calculate MBMS service synchronization parameter;
Described calculating MBMS service synchronization parameter comprises:
Calculate MBMS service synchronization parameter by described MAC entity.
6. method as claimed in claim 5 is characterized in that, after each RNC receives MBMSSESSION START message from CN, to SRNC send obtain the request message of MBMS service synchronization parameter before, this method further comprises:
Each RNC sets up MBMS service surface information by creating the MBMS_IU entity, distributes local resource by creating the MBMS_IUR entity.
7. method as claimed in claim 5, it is characterized in that, the MBMS business information of carrying in the MBMS SESSION START message that SRNC receives after receiving the request message that obtains MBMS service synchronization parameter, according to this SRNC is set up and is used to calculate before the MAC entity of MBMS service synchronization parameter, and this method further comprises:
SRNC distributes local resource and Radio Resource by creating the MBMS_IUR entity.
8. method as claimed in claim 7 is characterized in that, after described distribution local resource and the Radio Resource, this method further comprises:
SRNC replys the MBMS synchronous bearer to described each RNC and sets up responding MBMS SYNCBEARER SETUP RSP message;
In the sub-district that described each RNC administered, set up Common transport channel MTCH channel by creating the MBMS_IUB entity by the professional sub-district that covers of current MBMS;
Described each RNC replys MBMS session beginning responding MBMS SESSION STARTRESPONSE message to CN.
9. method as claimed in claim 5 is characterized in that, the MBMS business information of carrying in the described MBMS SESSION START message that receives according to this SRNC is set up and is used to calculate before the MAC entity of MBMS service synchronization parameter, and this method further comprises:
SRNC sets up MBMS service surface information by creating the MBMS_IU entity, and after MBMS service surface information is set up successfully, returns MBMS SESSION START RESPONSE message to CN.
10. as method as described in the arbitrary claim of claim 1 to 9, it is characterized in that,
Described MBMS service synchronization parameter comprises: Connection Frame Number CFN information and transformat TF information.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105580422A (en) * | 2013-07-24 | 2016-05-11 | 松下电器（美国）知识产权公司 | Efficient discard mechanism in small cell deployment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105580422A (en) * | 2013-07-24 | 2016-05-11 | 松下电器（美国）知识产权公司 | Efficient discard mechanism in small cell deployment |
| CN105580422B (en) * | 2013-07-24 | 2019-07-19 | 太阳专利信托公司 | Efficient discard mechanism in small cell deployment |
| US10425346B2 (en) | 2013-07-24 | 2019-09-24 | Sun Patent Trust | Efficient discard mechanism in small cell deployment |
| US11050674B2 (en) | 2013-07-24 | 2021-06-29 | Sun Patent Trust | Efficient discard mechanism in small cell deployment |
| US11601373B2 (en) | 2013-07-24 | 2023-03-07 | Sun Patent Trust | Efficient discard mechanism in small cell deployment |
| US11831558B2 (en) | 2013-07-24 | 2023-11-28 | Sun Patent Trust | Efficient discard mechanism in small cell deployment |
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