CN101174883B - Synchronous scheduling method - Google Patents
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Abstract
The present invention provides a synchronous control method comprising that: 1. a radio resource control entity obtains the frame number of node B from the network, according to the frame number of node B, the synchronous requirements of air interfaces and the fixed relationship between connection frame numbers of operation channel, the deviation value between the connection frame number of the operation channel and the frame number of the radio network controller in every cell of the network is obtained, and the fixed relationship is stored to the radio link control entity; 2. the radio link entity obtains the connection frame number of emitted data according to the fixed relationship and emits the data and the connection frame number to media to access to the control entity; 3. every medium is accessed to the control entity and the data are emitted to the frame agreement entity; 4. the frame agreement entity forms the frame agreement frame and sets the frame number as the connection frame number appointed by the radio link; the frame agreement frame is emitted to the node B; 5.the node B emits data in every cell according to the connection frame number.
Description
Technical field
The present invention relates to the communications field, relate in particular to synchronous dispatching method.
Background technology
Along with development communication technologies, the mobile data speed that can provide is more and more higher, the application form of mobile service is also more and more diversified, except business such as satisfy that phone, message and surfing Internet with cell phone are browsed, also emerged a large amount of high bandwidth multimedia services, as video conference, television broadcasting, video request program, advertisement, online education, interactive game etc.Wherein there is a class business to have a common characteristic: to require a plurality of users to receive identical business simultaneously.As weather forecast, news, advertisement, information, TV etc.In order to effectively utilize mobile network resource, introduce multimedia broadcast multicast service (Multimedia Broadcast MulticastService, hereinafter to be referred as MBMS), promptly in the mobile network, provide a data source to send the point-to-multipoint service of data to a plurality of users, realize that mobile core network and access network resource are shared, improve utilization rate of network resource, the especially Bao Gui interface resource of eating dishes without rice or wine.
In order to improve cell capacity, making full use of interface-free resources does not have, the MBMS service needed is carried out soft merging, this media data that just requires the minizone is in the unanimity of eating dishes without rice or wine, and the time difference (being called for short Delta CFN), guarantee to add in the time slot (hereinafter to be referred as Slot) at a Transmission Time Interval (transmission time interval is hereinafter to be referred as TTI).After introducing MBMS, variation has taken place in the protocol stack of user's face, support a plurality of sub-districts of soft merging to share PDCP (packet data convergence protocol, hereinafter to be referred as PDCP) and Radio Link control (radio link control, hereinafter to be referred as RLC) entity, medium access control (the medium access control forMBMS of MBMS is separately used in each sub-district, hereinafter to be referred as MAC-m) and Frame Protocol separately (frame protocol is hereinafter to be referred as FP).So just individual problem is arranged: though guaranteed minizone MBMS data synchronization in the PDCP/RLC aspect, but each sub-district still is each self scheduling in MAC-m, FP aspect, and time difference of the radio frames of eating dishes without rice or wine that so just cannot guarantee different districts is in the 1TTI+1Slot scope.And the node of FP is synchronous and transport channel synchronization, can only guarantee radio network controller (radio network controller, hereinafter to be referred as RNC) and Node B (hereinafter to be referred as Node B) Iub mouth ground resource synchronously, do not guarantee that the FP of data in each sub-district of same business also is synchronous.Therefore, must provide a kind of mode guarantee business datum the MAC-m of different districts and FP aspect synchronously.
Summary of the invention
At above one or more problems, the invention provides two kinds of synchronous dispatching methods, can guarantee business datum the MAC-m of different districts and FP aspect synchronously.
First kind of synchronous dispatching method according to the present invention may further comprise the steps:
Another kind of synchronous dispatching method according to the present invention may further comprise the steps:
Above-mentioned synchronous fixed relationship is: the Connection Frame Number of Traffic Channel=(frame number+deviate of radio network control entity) %256.
Above-mentioned scheduling strategy need guarantee to have specified the in good time priority scheduling of Radio Link control data of the Connection Frame Number of air interface transmitting time Traffic Channel.
Above-mentioned deviate is less than or equal to a Transmission Time Interval and a time slot sum.
Synchronous dispatching method of the present invention can be used for distributed or centralized multimedia broadcast multi-broadcasting business system.
The present invention realizes the soft merging of MBMS business by at the synchronized transmission of RNC centralized control MBMS business in each sub-district, guaranteed business datum the MAC-m of different districts and FP aspect synchronously.
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 schematic diagram according to first kind of synchronous dispatching method of the present invention;
Fig. 2 is the schematic diagram according to the specific embodiment of first kind of synchronous dispatching method of the present invention;
Fig. 3 is the schematic diagram according to second kind of synchronous dispatching method of the present invention; And
Fig. 4 is the schematic diagram according to the specific embodiment of second kind of synchronous dispatching method of the present invention.
Embodiment
Below with reference to accompanying drawing, describe the specific embodiment of the present invention in detail.
Synchronous dispatching method of the present invention is realized the soft merging of MBMS business by at the synchronized transmission of RNC centralized control MBMS business in each sub-district.This method is applicable to distributed system and integrated system.
Fig. 1 is the schematic diagram according to first kind of synchronous dispatching method of the present invention.As shown in Figure 1, the scheduling step is as follows:
Step S102:RNC obtains Node B frame number (Node B frame number in real time, hereinafter to be referred as BFN), according to synchronous requirement, BFN and Connection Frame Number (the ConnectionFrame Number that eats dishes without rice or wine, hereinafter to be referred as CFN) between fixed protocol relation obtain the CFN and RNC frame number (the RNC frame number of each sub-district carrying MBMS Traffic Channel, hereinafter to be referred as RFN) between deviation (be called for short delta), and preserve the triadic relation of each sub-district at MBMS RLC: CFN=(RFN+delta) %256.
When step S104:MBMS rlc layer sends data to the MAC-m of each sub-district, send the frame number CFN of this FP Frame in MAC-m indication respective cell, wherein frame number CFN is calculated according to delta and formula CFN=(RFN+delta) %256 by MBMS RLC.
Step S106: after the MAC-m of each sub-district receives MBMS RLC data, send data to the FP layer---the in good time priority scheduling of MBMS RLC data that needs assurance to specify the transmitting time CFN that eats dishes without rice or wine according to certain scheduling strategy.
Step S108: after the FP of each sub-district receives the data of MAC-m, form FP frame and FP frame number and be set to CFN, send to Node B then.
Step S110:Node B receives the FP frame, sends the data to UE according to the CFN that carries in the respective cell by wireless channel, realizes that the data sync of different districts sends.
Fig. 2 is the schematic diagram according to the specific embodiment of first kind of synchronous dispatching method of the present invention.Set scene: the sub-district among 3 Node B:1,2,3 of certain RNC management need provide certain MBMS business; Need among the Node B1 to provide the cell identification of this MBMS business number be respectively 1 and 2:Node B2 in need to provide the cell identification of this MBMS business number to be respectively 3 and 4; Needing to provide the cell identification of this MBMS business among the Node B3 number is 5.
As shown in Figure 2, the scheduling step is as follows:
The relation that step S202:MBMS RLC obtains and preserves between RFN and the CFN is as follows:
The relation of cell RF N and CFN
1 CFN＝(RFN+4069)％256
2 CFN＝(RFN+4069)％256
3 CFN＝(RFN+53)％256
4 CFN＝(RFN+53)％256
5 CFN＝(RFN+3925)％256
Suppose that the deviation delta between the CFN and RFN is respectively 4069,4069,53,53,3925 in the sub-district 1～5;
Step S204: suppose that MBMS RLC detected RFN when the MAC-m of each sub-district correspondence sends data is 187, then MBMS RLC calculates the frame number CFN that respective cell sends the FP frame of corresponding data according to the deviation delta between the CFN of the RFN that preserves among the step S202 and each sub-district, the CFN of the correspondence of sub-district 1,2 is 160, the CFN of sub-district 3,4 correspondences is 240, and the CFN of sub-district 5 correspondences is 16.MBMS RLC brings the CFN that calculates the MAC-m of respective cell when MAC-m sends data;
Step S206: the MAC-m of sub-district 1～5 sends data according to certain scheduling strategy to the FP layer after receiving data, carries the frame number CFN that respective cell sends the FP frame of corresponding data simultaneously.Wherein to bring the CFN of FP be 160 to the MAC-m of sub-district 1,2, and the CFN that the MAC-m of sub-district 3,4 brings FP is 240, and the CFN that the MAC-m of sub-district 5 brings FP is 16;
Step S208: the FP of sub-district 1～5 receives and forms the FP frame after the data, and the frame number of the FP frame CFN that is set to receive, issues Node B then.According to the CFN that FP among the step S206 receives, the CFN that the FP frame of sub-district 1,2 carries is 160, and the CFN that the FP frame of sub-district 3,4 carries is 240, and the CFN that the FP frame of sub-district 5 carries is 16.
Step S210:Node B receives the FP frame, sends the data to UE according to the CFN that carries in the respective cell by wireless channel, and the data sync of sub-district 1～5 sends.
Fig. 3 is the schematic diagram according to second kind of synchronous dispatching method of the present invention.As shown in Figure 3, second kind of synchronous dispatching method of the present invention may further comprise the steps:
Step S302:RNC obtains Node B frame number (Node B frame number in real time, hereinafter to be referred as BFN), according to synchronous requirement, BFN and Connection Frame Number (the ConnectionFrame Number that eats dishes without rice or wine, hereinafter to be referred as CFN) between fixed protocol relation obtain the CFN and RNC frame number (the RNC frame number of each sub-district carrying MBMS Traffic Channel, hereinafter to be referred as RFN) between deviation (be called for short delta), and preserve triadic relation: CFN=(RFN+delta) %256 at MAC-m.
When step S304:MBMS rlc layer sends data to the MAC-m of each sub-district, specify RFN.
Step S306:MAC-m receives MBMS RLC data, calculate the CFN that these data send according to RFN that carries in the data and formula CFN=(RFN+delta) %256, send data according to certain scheduling strategy to the FP layer then---the in good time priority scheduling of MBMS RLC data that needs assurance to specify the transmitting time CFN that eats dishes without rice or wine.
After step S308:FP layer is received the data of MAC-m, form FP frame and FP frame number and be set to CFN, send to Node B in the moment that is fit to then.
Step S310:Node B receives the FP frame, sends the data to UE according to the CFN that carries in the respective cell by wireless channel, realizes that the data sync of different districts sends.
Fig. 4 is the schematic diagram according to the specific embodiment of second kind of synchronous dispatching method of the present invention.As shown in Figure 4, the isochronous schedules process is as follows:
The relation that step S402:MAC-m obtains and preserves between RFN and the CFN is as follows:
The relation of cell RF N and CFN
1 CFN＝(RFN+4069)％256
2 CFN＝(RFN+4069)％256
3 CFN＝(RFN+53)％256
4 CFN＝(RFN+53)％256
5 CFN＝(RFN+3925)％256
Suppose that the deviation delta between the CFN and RFN is respectively 4069,4069,53,53,3925 in the sub-district 1～5;
Step S404: suppose that MBMS RLC detected RFN when the MAC-m of each sub-district correspondence sends data is 187, when MBMS RLC sends data RFN is brought the MAC-m of respective cell;
Step S406: the MAC-m of sub-district 1～5 sends data according to certain scheduling strategy to the FP layer after receiving data, carries the frame number CFN that respective cell sends the FP frame of corresponding data simultaneously.CFN by its RFN be 187 and CFN=(RFN+delta) %256 obtain: the CFN that the MAC-m of sub-district 1,2 brings FP is 160, and the CFN that the MAC-m of sub-district 3,4 brings FP is 240, and the CFN that the MAC-m of sub-district 5 brings FP is 16;
Step S408: the FP of sub-district 1～5 receives and forms the FP frame after the data, and the frame number of the FP frame CFN that is set to receive, issues Node B then.According to the CFN that FP among the step S406 receives, the CFN that the FP frame of sub-district 1,2 carries is 160, and the CFN that the FP frame of sub-district 3,4 carries is 240, and the CFN that the FP frame of sub-district 5 carries is 16.
Step S410:Node B receives the FP frame, sends the data to UE according to the CFN that carries in the respective cell by wireless channel, and the data sync of sub-district 1～5 sends.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a synchronous dispatching method is characterized in that, said method comprising the steps of:
Step 1, radio network controller obtains the frame number of Node B from network, and obtain deviate between the frame number of the Connection Frame Number of each Zone channel in the network and described radio network controller according to the fixed relationship between the Connection Frame Number of the synchronous requirement of the frame number of described Node B, air interface and Traffic Channel, and described fixed relationship is saved to radio link control entity;
Step 2, described radio link control entity also obtains sending the Connection Frame Number of data according to described fixed relationship, and described Connection Frame Number and data are sent to medium access control entity;
Step 3, each described medium access control entity is sent to frame protocol entity according to scheduling strategy with described Connection Frame Number and data after the data that receive from described radio link control entity;
Step 4, described frame protocol entity is the component frame protocol frame after receiving from the data of described medium access control entity, and the frame number of frame protocol is set to described Connection Frame Number, and the frame protocol after will being provided with is sent to Node B; And
Step 5, described Node B send described data according to the Connection Frame Number in the described frame protocol in each sub-district after the frame protocol that receives from described frame protocol entity.
2. synchronous dispatching method according to claim 1 is characterized in that, described fixed relationship is: the Connection Frame Number of Traffic Channel=(frame number+deviate of radio network controller) %256, wherein, % represents delivery.
3. synchronous dispatching method according to claim 1 is characterized in that, described scheduling strategy need guarantee to have specified the in good time priority scheduling of data of the radio link control entity of Connection Frame Number.
4. synchronous dispatching method according to claim 1 is characterized in that, described deviate is less than or equal to a Transmission Time Interval and a time slot sum.
5. synchronous dispatching method according to claim 1 is characterized in that, described synchronous dispatching method is used for distributed or centralized multimedia broadcast multi-broadcasting business system.
6. a synchronous dispatching method is characterized in that, said method comprising the steps of:
Step 1, radio network controller obtains the frame number of Node B from network, obtain the deviate between the frame number of the Connection Frame Number of each Zone channel in the network and described radio network controller according to the fixed relationship between the Connection Frame Number of the synchronous requirement of the frame number of described Node B, air interface and Traffic Channel, described fixed relationship is saved at least one medium access control entity;
Step 2, the Radio Link entity is sent to described medium access control entity with the frame number of the radio network controller of data and appointment;
Step 3, described medium access control entity obtains sending the Connection Frame Number of described data according to the frame number of the radio network controller of described fixed relationship and described appointment, and according to scheduling strategy described Connection Frame Number and data is sent to frame protocol entity;
Step 4, the described frame protocol entity frame number of component frame protocol frame and frame protocol after receiving from the data of described medium access control entity is set to described Connection Frame Number, and the frame protocol after will being provided with is sent to Node B; And
Step 5, described Node B send described data according to the Connection Frame Number in the described frame protocol in each sub-district after the frame protocol that receives from described frame protocol entity.
7. synchronous dispatching method according to claim 6 is characterized in that, described fixed relationship is: the Connection Frame Number of Traffic Channel=(frame number+deviate of radio network controller) %256, wherein, % represents delivery.
8. synchronous dispatching method according to claim 6 is characterized in that, described scheduling strategy need guarantee to have specified the in good time priority scheduling of data of the radio link control entity of Connection Frame Number.
9. synchronous dispatching method according to claim 6 is characterized in that, described deviate is less than or equal to a Transmission Time Interval and a time slot sum.
10. synchronous dispatching method according to claim 6 is characterized in that, described synchronous dispatching method is used for distributed or centralized multimedia broadcast multi-broadcasting business system.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354924A (en) * | 1999-06-08 | 2002-06-19 | 凯瑞有限公司 | Communications protocol for packet data particularly in mesh topology wireless networks |
| CN1360444A (en) * | 2000-12-22 | 2002-07-24 | 西门子信息通讯网络公司 | Procedure for dispatching packet data sending permit on mobile station shared radio telecommunication channel |
| CN1823491A (en) * | 2003-06-17 | 2006-08-23 | 摩托罗拉公司 | Fast synchronization for half duplex digital communications |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354924A (en) * | 1999-06-08 | 2002-06-19 | 凯瑞有限公司 | Communications protocol for packet data particularly in mesh topology wireless networks |
| CN1360444A (en) * | 2000-12-22 | 2002-07-24 | 西门子信息通讯网络公司 | Procedure for dispatching packet data sending permit on mobile station shared radio telecommunication channel |
| CN1823491A (en) * | 2003-06-17 | 2006-08-23 | 摩托罗拉公司 | Fast synchronization for half duplex digital communications |
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