CN101043653B - Method for realizing transparent mode based inter-wireless network controller MBMS service synchronization - Google Patents
Method for realizing transparent mode based inter-wireless network controller MBMS service synchronization Download PDFInfo
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- CN101043653B CN101043653B CN200710086953A CN200710086953A CN101043653B CN 101043653 B CN101043653 B CN 101043653B CN 200710086953 A CN200710086953 A CN 200710086953A CN 200710086953 A CN200710086953 A CN 200710086953A CN 101043653 B CN101043653 B CN 101043653B
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Abstract
The provided synchronizing method for MBMS business based on TM mode comprises: S102, configuring TM mode for RNC; S104, the signal source configures the data package length toward wireless network controller according to the controller transparent output mode; and S106, the latter process data package. This invention avoids asynchronous problem of idle signal.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method that realizes multimedia broadcast multicast services (multimedia broadcast multicastservice abbreviates MBMS as) service synchronization between radio network controller based on transparent mode.
Background technology
Now, people have no longer contented just to phone and messaging service for the demand of mobile communication, and along with the fast development of Internet net, a large amount of multimedia services emerge.For the some of them applied business, a plurality of users can receive identical data simultaneously, for example, and video request program, television broadcasting, video conference, online education, interactive game etc.
In order to realize utilizing most effectively mobile network resource, the MBMS technology has been proposed.The MBMS technology is that a data source is sent the point-to-multipoint service of data to a plurality of users, is used to realize that Internet resources are shared, comprises sharing of mobile core network and access network resource, and especially interface-free resources shares.The MBMS of 3GPP definition not only can realize the classes of messages multicast and the broadcasting of plain text low rate, can also realize the multimedia service multicast and the broadcasting of two-forty, and this has complied with following mobile data Development Trend undoubtedly.
As the technology that improves the professional availability of frequency spectrum of MBMS, SFN (singlefrequency network abbreviates SFN as) or chip-level merge all identical wireless signals of adjacent base station synchronized transmission of (Chip merging) specification requirement.
Under the SFN pattern; Subscriber equipment (user equipment; Abbreviate UE as) can the signal from different base station be regarded as multipath signal; Make public physic channel transmit broadcasting service and obtain bigger signal gain, thereby improved professional service quality (quality of service the abbreviates QoS as) performance of MBMS.Yet the introducing of this technology has brought new problem, that is, owing to be regarded as multipath from the signal of different base station by mobile phone, just require each footpath data must keep synchronized transmission.Under the Chip merging patterns, UE receives the service signal that different base station sends simultaneously, and realizes merging at chip-level through the multi-plot joint detection technique, and the MBMS service signal that this different districts that just requires UE to receive sends all is the same at same time slot.
Variation has taken place in the protocol stack of user plane after the 3GPP introducing MBMS; Radio network controller (radio network controller; Abbreviate RNC as) can be when the MBMS service carrier is set up according to core net service area (service area; Abbreviate SA as) tabulation, be organized into the cell set mode with affiliated subdistrict and set up shared PDCP (packet data convergence protocol abbreviates PDCP as) in a plurality of sub-districts and Radio Link control (radio link control; Abbreviate RLC as) entity; Medium access control (medium access control for MBMS abbreviates MAC-m as) and the Frame Protocol separately (frame protocol abbreviates FP as) of MBMS separately used in each sub-district.Wherein, RLC uses Unacknowledged Mode (unacknowledged mode abbreviates the UM pattern as).
The MBMS business is the service towards the whole network, and same MBMS business possibly be based upon on the different RNCs.Like this, the UE receiving gain is improved in order to utilize SFN or Chip folding in the sub-district between different RNCs, just needs and the identical MBMS business of cell synchronizing transmission of the adjacent R NC signal of eating dishes without rice or wine.Otherwise, belong to that signal can cause with disturbing frequently between the neighbor cell of different RNCs, perhaps UE can not get receiving gain.
Realize in the scheme synchronous between the professional RNC of MBMS that at a kind of core net mark timestamp that uses RNC is implemented in the identical business datum of identical moment transmission through timestamp.But also need guarantee the consistency of business datum and agreement control packet header content, existing MBMS protocol definition uses the UM pattern at rlc layer, but the distribution of the burst function of UM pattern and RLC sequence number does not have mechanism can guarantee between RNC, to keep synchronously.If the nonsynchronous situation of RLC sequence number or burst will cause the same frequency between abutting subdistrict to disturb, perhaps UE can not get receiving gain like this.
In sum, in the present technical scheme, there is the inconsistent nonsynchronous problem of signal that causes eating dishes without rice or wine of sequence number under the UM pattern, therefore, need a kind ofly can overcomes the problems referred to above, and realize the synchronous scheme of inter-wireless network controller MBMS service.
Summary of the invention
Consider the problems referred to above that exist in the correlation technique and make the present invention, for this reason, main purpose of the present invention is to provide a kind of scheme that realizes that inter-wireless network controller MBMS service is synchronous.
According to embodiments of the invention, provide a kind of and realized the synchronous method of inter-wireless network controller MBMS service based on transparent mode (transparentmode abbreviates the TM pattern as).
This method comprises: step S102, the transparent mode of configuring wireless network controller; Step S104, information source is sent the packet of respective length to radio network controller according to the transparent output mode configuration of radio network controller; And step S106, radio network controller carries out handled according to length of data package to packet.
In step S102; The transparent mode of radio network controller is the non-pattern of cutting apart; In step S104; The length of data package that information source is sent equals the length of transparent mode protocol Data Unit, and in step S106, radio network controller is put into a wireless link control protocol data cell (PDU) with packet.
Perhaps; In step S102; The transparent mode of radio network controller is for cutting apart pattern, and in step S104, length of data package equals the integral multiple of the length of transparent mode protocol Data Unit; And the maximum data length that can transmit less than a Transmission Time Interval (TTI); In step S106, radio network controller is divided into the subdata bag that a plurality of length equal the length of transparent mode protocol Data Unit with packet, respectively a plurality of subdata bags is put into a wireless link control protocol data cell (PDU).
In step S104, information source is at packet acceptance of the bid note timestamp.Correspondingly, in step S106, radio network controller is according to the delivery time of timestamp mapping (enum) data bag, and wherein, timestamp is unidirectional to be increased progressively, reach predetermined maximum after, information source begins mark again from minimum value.
In step S104, information source mark in packet transmits Sequence Number.Correspondingly, in step S106, radio network controller is according to the data packet sequencing that transmits Sequence Number and send at same Transmission Time Interval, wherein, unidirectional the increasing progressively that transmit Sequence Number, reach predetermined maximum after, information source begins mark again from minimum value.
In addition, information source be following any: core net node, service node.
In technical scheme of the present invention; The packet that transparent mode transparent transmission through rlc layer receives; To business datum at rlc layer through after the transparent entity handles; Therefore do not increase the agreement control head of rlc layer, avoid or overcome the inconsistent problem of the control signal that under the UM pattern, causes owing to sequence number is inconsistent.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart based on TM pattern realization inter-wireless network controller MBMS service method for synchronous that illustrates according to the embodiment of the invention; And
Fig. 2 illustrates to realize the flow chart of the instance of inter-wireless network controller MBMS service method for synchronous according to the embodiment of the invention based on the TM pattern.
Embodiment
Describe embodiments of the invention below with reference to accompanying drawings in detail.
In embodiments of the present invention, a kind of method that realizes MBMS service synchronization between RNC based on the TM pattern is provided; Fig. 1 is the flow chart that this method is shown.
With reference to Fig. 1, this method comprises: step S102, configuring TM mode for RNC; Step S104, information source is sent the packet of respective length to radio network controller according to the transparent output mode configuration of radio network controller; And step S106, radio network controller carries out handled according to length of data package to packet.
Wherein, information source be following any: core net node, service node.
According to the difference of traffic performance, the RNC TM pattern among the step S102 can be divided into two kinds of configurations: cut apart pattern and the non-pattern of cutting apart.
The detailed process of this method under above-mentioned two kinds of configurations below will be described respectively.
When in step S102, being non-when cutting apart pattern with RNC TM pattern configurations; In step S104, packet (for example, Service Data Unit (the service dataunit of information source output; Abbreviate SDU as)) length equal transparent mode protocol Data Unit (protocoldata unit; Abbreviate PDU as) length, and can transmit a plurality of SDU in the Transmission Time Interval (transmission time interval abbreviates TTI as); In step S106, RNC puts into a rlc protocol data cell (PDU) with packet then.
On the other hand; When in step S102 with RNC TM pattern configurations when cutting apart pattern; In step S104, (for example, SDU) length equals the integral multiple of transparent mode PDU length to the packet of information source output; And less than the maximum data length that a TTI can transmit, a TTI can only transmit a SDU; In step S106, RNC is divided into the subdata bag that a plurality of length equal the length of transparent mode PDU with packet then, and a plurality of subdata bags are put into a rlc protocol data cell (PDU) respectively.
Here, data packet length is for sending to the data length of user terminal.
Preferably, in step S104, information source can be at packet acceptance of the bid note timestamp; Like this, in step S106, RNC is according to the delivery time of timestamp mapping (enum) data bag, and wherein, timestamp can unidirectionally increase progressively, reach maximum after, information source begins mark again from minimum value, RNC can stab and accomplish packet loss detection and ranking function service time.
In addition, preferably, in step S104, information source also can transmit Sequence Number by mark in packet; Like this, in step S106, RNC wherein, transmits Sequence Number and can unidirectionally increase progressively according to the data packet sequencing that transmits Sequence Number and send at same Transmission Time Interval, reach maximum after, information source begins mark again from minimum value.RNC sorts to the packet of receiving according to sequence number, can prevent like this owing to the out of order arrival RNC that occurs in the packet route process causes receiving between RNC that packet sequence is inconsistent, thereby cause eating dishes without rice or wine between RNC the nonsynchronous problem of signal.
Below through instantiation describe according to the embodiment of the invention realize MBMS service synchronization method between RNC based on the TM pattern, wherein, Fig. 2 shows the flow chart of the processing of this instance.
In this example, RNC TM pattern is the non-pattern of cutting apart, and information source is remembered timestamp and transmitted Sequence Number in the packet acceptance of the bid, and the length of TM PDU is 100 bytes.
With reference to Fig. 2, in step S202, information source generates packet, and data packet length is 100 bytes (that is, equaling the length of TM PDU), and information source is at packet acceptance of the bid note timestamp;
In step S204, information source transmits Sequence Number to packet marking, and wherein, the sequence number span is 0 to 255; In addition, increase progressively distribution with sequence number is unidirectional, if sequence number reaches 255, next sequence number distributes since 0;
In step S206, RNC receives packet, the moment that this packet is issued in mapping according to timestamp.Simultaneously, the transmitting Sequence Number of mark in the RNC inspection packet sorted according to the packet that transmits Sequence Number to sending at same TTI;
At last, in step S208, the packet that the RLC entity of RNC coupling is received is to TM PDU.Sending to next protocol hierarchy handles.
In sum; In technical scheme of the present invention; The packet that TM pattern transparent transmission through rlc layer receives; To business datum at rlc layer through after the TM entity handles, do not increase the agreement control head of rlc layer, therefore avoid or overcome the inconsistent problem of the control signal that under the UM pattern, causes owing to sequence number is inconsistent.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. realize the synchronous method of multimedia broadcast-multicast service between radio network controller based on transparent mode for one kind, it is characterized in that, comprising:
Step S102, the transparent mode of configuring wireless network controller Radio Link control rlc layer;
Step S104, information source is sent the packet of respective length to said radio network controller according to the transparent output mode configuration of said radio network controller; And
Step S106, said radio network controller carries out handled according to said length of data package to said packet.
2. according to claim 1 based on the synchronous method of multimedia broadcast-multicast service between transparent mode realization radio network controller, it is characterized in that in said step S102, the transparent mode of said radio network controller is the non-pattern of cutting apart.
3. according to claim 2 based on the synchronous method of multimedia broadcast-multicast service between transparent mode realization radio network controller; It is characterized in that; In said step S104, the said length of data package that said information source is sent equals the length of transparent mode protocol Data Unit.
4. according to claim 3 based on the synchronous method of multimedia broadcast-multicast service between transparent mode realization radio network controller; It is characterized in that; In said step S106, said radio network controller is put into a wireless link control protocol data cell with said packet.
5. according to claim 1 based on the synchronous method of multimedia broadcast-multicast service between transparent mode realization radio network controller, it is characterized in that in said step S102, the transparent mode of said radio network controller is for cutting apart pattern.
6. according to claim 5 based on the synchronous method of multimedia broadcast-multicast service between transparent mode realization radio network controller; It is characterized in that; In said step S104; The said length of data package that said information source is sent equals the integral multiple of the length of transparent mode protocol Data Unit, and the maximum data length that can transmit less than a Transmission Time Interval.
7. according to claim 6 based on the synchronous method of multimedia broadcast-multicast service between transparent mode realization radio network controller; It is characterized in that; In said step S106; Said radio network controller is divided into the subdata bag that a plurality of length equal the length of said transparent mode protocol Data Unit with said packet, and respectively said a plurality of subdata bags is put into a wireless link control protocol data cell.
8. according to each describedly realizes the synchronous method of multimedia broadcast-multicast service between radio network controller based on transparent mode in the claim 1 to 7, it is characterized in that in said step S104, said information source is at said packet acceptance of the bid note timestamp.
9. according to claim 8 based on the synchronous method of multimedia broadcast-multicast service between transparent mode realization radio network controller; It is characterized in that; In said step S106, said radio network controller shines upon the delivery time of said packet according to said timestamp.
10. according to claim 8 based on the synchronous method of multimedia broadcast-multicast service between transparent mode realization radio network controller; It is characterized in that; Said timestamp is unidirectional to be increased progressively, reach predetermined maximum after, said information source begins mark again from minimum value.
11. according to each describedly realizes the synchronous method of multimedia broadcast-multicast service between radio network controller based on transparent mode in the claim 1 to 7; It is characterized in that; In said step S104, said information source mark in said packet transmits Sequence Number.
12. it is according to claim 11 based on the synchronous method of multimedia broadcast-multicast service between transparent mode realization radio network controller; It is characterized in that; In said step S106, said radio network controller is according to the said data packet sequencing that transmits Sequence Number and send at same Transmission Time Interval.
13. it is according to claim 11 based on the synchronous method of multimedia broadcast-multicast service between transparent mode realization radio network controller; It is characterized in that; Said unidirectional the increasing progressively that transmit Sequence Number, reach predetermined maximum after, said information source begins mark again from minimum value.
14. according to claim 1ly realize the synchronous method of multimedia broadcast-multicast service between radio network controller based on transparent mode, it is characterized in that, said information source be following any: core net node, service node.
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| CN101350664A (en) * | 2007-07-18 | 2009-01-21 | 中兴通讯股份有限公司 | Method for synchronization of multimedia broadcast and multicast |
| CN101500193B (en) * | 2008-02-01 | 2012-11-28 | 中兴通讯股份有限公司 | Method for multimedia broadcast multicast service data synchronization between RNCs |
| CN101646130A (en) * | 2008-08-07 | 2010-02-10 | 中兴通讯股份有限公司 | Synchronizing method between multimedia broadcast-multicast service network elements of multiplex channel |
| CN102055724B (en) * | 2009-10-27 | 2016-01-20 | 中兴通讯股份有限公司 | Synchronous processing method for multimedia broadcast multicast service, upper layer network element and lower network element |
| CN102238493B (en) * | 2010-05-05 | 2014-08-13 | 中兴通讯股份有限公司 | Machine-to-machine (M2M)-platform-based message sequential transmission and receiving method and device |
| EP2874461A4 (en) * | 2013-01-18 | 2015-10-07 | Huawei Tech Co Ltd | Data transmission method and device |
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| CN1668017A (en) * | 2004-03-08 | 2005-09-14 | 华为技术有限公司 | ATM communication network and networking controller thereof |
| WO2006131131A1 (en) * | 2005-06-08 | 2006-12-14 | Telecom Italia S.P.A. | Method and system for transmitting content to a plurality of users of a mobile communication network |
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| CN1668017A (en) * | 2004-03-08 | 2005-09-14 | 华为技术有限公司 | ATM communication network and networking controller thereof |
| WO2006131131A1 (en) * | 2005-06-08 | 2006-12-14 | Telecom Italia S.P.A. | Method and system for transmitting content to a plurality of users of a mobile communication network |
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