CN101754375A - Data issuing method and system - Google Patents
Data issuing method and system Download PDFInfo
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- CN101754375A CN101754375A CN200810239591A CN200810239591A CN101754375A CN 101754375 A CN101754375 A CN 101754375A CN 200810239591 A CN200810239591 A CN 200810239591A CN 200810239591 A CN200810239591 A CN 200810239591A CN 101754375 A CN101754375 A CN 101754375A
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Abstract
The invention discloses a data issuing method which comprises the following steps that: MACd issues a data quantity notification message of downlink data to MACc; when TTI arrives, MACc selects an FACH user DCCH/DTCH transmission format combination; MACc sends a transmission format combination selection instruction message to MACd; MACd sends the downlink data to MACc; the MACc caches the downlink data; and in follow-up TTI, MACc sends the downlink data to a user. The invention also discloses a data issuing system. In the invention, MACc first caches the downlink data, and then sends the downlink data to the user in the follow-up TTI, so as to prevent the hidden hazard that the downlink data Iub of the FACH user goes out of a window; and a user processing sequence is determined according to the access user priority and the principle of the cycle scheduling with the priority, so as to realize fair, reasonable and effective FACH user scheduling.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of method and system of data distributing.
Background technology
To being in CELLFACH attitude user, they are at RNC (Radio NetworkController, radio network controller) data flow in the network need pass through Macc＜-Macd mapping, this function is at existing MAC (Media Access Control, medium access control) define in the standard, but how both specifically clearly do not describe alternately.
For uplink service, situation is simpler, and the MACc entity directly gets final product upstream data according to mapping table to MACd; Downlink business is relative complex then, present FACH channel of sub-district one general configuration, so descending scheduling will be considered following various situation:
Sub-district CCCH (Common Control Channel, Common Control Channel) BCCH (Broadcast Control Channel, Broadcast Control Channel);
FACH user DCCH (Dedicated Control Channel, Dedicated Control Channel) DTCH (Dedicated Traffic Channel, Dedicated Traffic Channel);
(Forward Access Channel, the forward traffic channel) user of a plurality of FACH in the sub-district also deposits.
Under single user situation, as long as the MACd entity of user's correspondence has downlink data, MACc solid data amount that will the notifying cell correspondence, when sub-district FACH channel satisfies corresponding TTI (Transmission Time Interval, Transmission Time Interval) during delivery time, MACc then carries out obtaining corresponding data from MACd after TFC (Transport Format Combination, combinations of transport formats) selects and issues from the FACH channel then; Under multi-user's situation, generally all be the downlink data transmission of simply setting up the sequential scheduling different user at present, consider that perhaps priority scheduling user downlink data sends according to FACH user's priority.
Single user's scheduling scheme shortcoming: the actual physical resource of living in of MACc and MACd entity is indefinite, and their interaction time delay is also indefinite, adopts this scheme to cause descending Iub exit window easily; Deadlock situation might occur, if unpredictable mistake of bottom transmission abandons MACd-＞MACc data volume notification message or MACc-＞MACd TFC selection result Indication message, then this downlink data packet can not send smoothly; MACd-＞MACc data volume notification message takies more bottom transfer resource, particularly a plurality of FACH users and deposit under the situation.
Multi-subscriber dispatching scheme shortcoming: do not consider same priority robin scheduling problem, if two priority same subscriber, first user has data always, and then second user is in starvation always, can not get scheduling; The another one problem is need be user's downlink signaling (DCCH) and professional (DTCH) differentiating and processing of PS (Packet Switched, packet switching), signaling priority height.
Summary of the invention
For addressing the above problem, the invention provides a kind of method and system of data distributing, to realize that FACH user dispatches justice, rationally, effectively.
For achieving the above object, the technical scheme of the embodiment of the invention provides a kind of method of data distributing, may further comprise the steps: S1.MACd sends the data volume notification message of downlink data to MACc; S2.TTI then, MACc selects FACH user DCCH/DTCH combinations of transport formats; S3.MACc sends combinations of transport formats to MACd and selects Indication message; S4.MACd sends downlink data to MACc; S5.MACc carries out buffer memory to described downlink data; S6. at follow-up TTI, MACc sends the line data of leaving to the user.
Wherein, before step S1, also comprise: whether being notified to MACc before judging has data, if do not have, then carries out sending to MACc the step of the data volume notification message of downlink data.
Wherein, when carrying out step S1, MACd starts retransmission timer, when not receiving that combinations of transport formats is selected Indication message, retransmits the data volume notification message of a downlink data when overtime with the current data amount.
Wherein, after step S1, also comprise: MACc is provided with user's data existence mark according to the data volume notification message of described downlink data, and writes down current RLC data in buffer amount.
Wherein, before step S2, also comprise: judged whether that sub-district CCCH/BCCH data need to handle,, then carried out the selection of FACH user DCCH/DTCH combinations of transport formats if do not have.
Wherein, in step S2, determine that according to inserting User Priority and same priority robin scheduling principle the user handles sequencing.
Wherein, in the described priority, signaling has precedence over the PS business.
Wherein, when carrying out step S4, MACd is remaining data volume in MACc notifies current RLC buffer memory.
Wherein, if remaining data volume is not 0 in the current RLC buffer memory, then start timer.
The technical scheme of the embodiment of the invention also provides a kind of data issuing system, and described system comprises MACc and MACd, and described MACc comprises: the combinations of transport formats selected cell is used to select FACH user DCCH/DTCH combinations of transport formats; Select the Indication message transmitting element, be used for sending combinations of transport formats and select Indication message to MACd; Data buffer storage unit is used for the downlink data that MACd sends is carried out buffer memory; Data transmission unit is used for sending described downlink data to the user; Described MACd comprises: data volume notification message transmitting element is used for the data volume notification message to MACc transmission downlink data; The downlink data transmitting element is used for sending downlink data to MACc.
Wherein, described MACd also comprises retransmission timer, and is overtime when described retransmission timer, and do not receive when combinations of transport formats is selected Indication message that MACd gives MACc with the data volume notification message that the current data amount is retransmitted a downlink data.
Wherein, described MACc also comprises user's processing sequence determining unit, is used for determining that according to inserting User Priority and same priority robin scheduling principle the user handles sequencing.
Compared with prior art, technical scheme of the present invention has following advantage:
In the embodiment of the invention, MACc elder generation buffer memory downlink data at follow-up TTI, sends described downlink data to the user again, thereby avoids FACH user's downlink data Iub exit window hidden danger; And determine that according to inserting User Priority and same priority robin scheduling principle the user handles sequencing, to realize that FACH user dispatches justice, rationally, effectively.
Description of drawings
Fig. 1 is the flow chart of a kind of data distributing method of the embodiment of the invention one;
Fig. 2 is the flow chart of a kind of data distributing method of the embodiment of the invention two;
Fig. 3 is the flow chart of a kind of data distributing method of the embodiment of the invention three;
Fig. 4 is the structure chart of a kind of data distributing system of the embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
Embodiment one
A kind of data distributing method of the embodiment of the invention may further comprise the steps as shown in Figure 1:
Step S101, MACd send the data volume notification message of downlink data to MACc.
Step S102, TTI then, MACc selects forward traffic channel FACH user Dedicated Control Channel DCCH/ Dedicated Traffic Channel DTCH combinations of transport formats.
Step S103, MACc sends combinations of transport formats to MACd and selects Indication message;
Step S104, MACd sends downlink data to MACc.
Step S105, MACc carries out buffer memory to described downlink data.
Step S106, at follow-up TTI, MACc sends the line data of leaving to the user.
Embodiment two
A kind of data distributing method of the embodiment of the invention may further comprise the steps as shown in Figure 2:
Step S201, whether being notified to MACc before judging has data, if do not have, then carries out step S202, plays a timer simultaneously, and the overtime Tfc of not receiving Ind message is then retransmitted current downlink data amount.
Step S202, MACd send the data volume notification message of downlink data to MACc.
Step S203, TTI then, MACc selects FACH user DCCH/DTCH combinations of transport formats.
Step S204, MACc sends combinations of transport formats to MACd and selects Indication message.
Step S205, MACd is remaining data volume in MACc notifies current RLC buffer memory, if remaining data volume is not 0 in the current RLC buffer memory, then starts timer.
Step S206, MACd sends downlink data to MACc.
Step S207, MACc carries out buffer memory to described downlink data.
Step S208, at follow-up TTI, MACc sends the line data of leaving to the user.
Embodiment three
Owing to need to consider AOA (Angle Of Arrival on the FACH, the signal angle of arrival) processing, also need to consider the influence of iso-frequency adjacent community measurement, this section period can not the dispatching downlink data, therefore for simplifying the scheduling design, sub-district CCCH BCCH data and FACH user DCCH the DTCH data separate independent operation.Sub-district CCCH the BCCH data need override to handle, current TTI do not have just to consider under the situation of cell data FACH user DCCH the DTCH data dispatch.With reference to Fig. 3, present embodiment is implemented as follows:
FACH user MACd notifies the MACc data volume to the data volume notification message MACD_TO_MACC_DATA_NOTIFY that MACc sends downlink data; MACc is provided with user's data existence mark according to the data volume notification message of described downlink data, and writes down current RLC data in buffer amount; TTI then, MACc has judged whether that sub-district CCCH/BCCH data need to handle, if do not have, then selects FACH user DCCH/DTCH combinations of transport formats, and sends combinations of transport formats to MACd and select Indication message MACC_TO_MACD_STATUS_IND; MACd issues MACc by MACD_TO_MACC_DATA_REQ after RLC (Radio LinkController, Radio Link Controller) fetches data; MACc carries out buffer memory to described data, and sends described data at follow-up TTI to the user.
In order to save the bottom transfer resource, MACd adopts following mechanism for MACc downlink data amount announcement information: if MACd has new data, whether being notified to MACc before judging has data, if notified MACc that data are arranged, then not as any processing; Otherwise send primary data amount notice to MACc, play a timer then, receive then release timer of corresponding Tfc Ind Indication message before overtime, otherwise retransmit a data volume notice with the current data amount.After receiving that MACc gives the Tfc Ind message of MACd, incidentally give MACc the remaining data amount when MACd gives the MACc data, reduce taking of bottom transfer resource,, also needed a timer if the remaining data amount is not 0.The primary data amount is notified and is incidentally notified this dual mode all to upgrade the up-to-date downlink information of user at FACH, selects to use for MACc Tfc.
Under multi-user's situation, need to consider the dispatching sequence.Multi-subscriber dispatching realizes that thinking is priority query of design, and formation is initially sky, when having FACH user to insert in the sub-district, just is inserted into suitable formation according to the FACH User Priority, and each formation comprises the user of some equal priority.Dispatched users at first will be according to priority as foundation, if the User Priority in the formation is identical, and robin scheduling then.
MACc Tfc selects and downlink data is handled (read data, add first-class) the dispatching sequence be consistent, be that signaling has precedence over the PS business, it is in proper order: high-priority users signaling, low priority user signaling, high-priority users PS business datum, low priority user PS business datum.
A kind of data issuing system of the embodiment of the invention comprises MACc41 and MACd42 as shown in Figure 4, and MACc41 is connected with MACd42.
MACc41 comprises user's processing sequence determining unit 411, combinations of transport formats selected cell 412, selects Indication message transmitting element 413, data buffer storage unit 414 and data transmission unit 415.Wherein combinations of transport formats selected cell 412 is connected with selection Indication message transmitting element 413 with user's processing sequence determining unit 411 respectively, and data buffer storage unit 414 is connected with data transmission unit 415.User's processing sequence determining unit 411 is used for determining that according to inserting User Priority and same priority robin scheduling principle the user handles sequencing; Combinations of transport formats selected cell 412 is used to select FACH user DCCH/DTCH combinations of transport formats; Select Indication message transmitting element 413 to be used for sending combinations of transport formats and select Indication message to MACd; Data buffer storage unit 414 is used for the downlink data that MACd sends is carried out buffer memory; Data transmission unit 415 is used for sending described downlink data to the user.
MACd42 comprises data volume notification message transmitting element 421, downlink data transmitting element 422 and retransmission timer 423.Data volume notification message transmitting element 421 is used for sending to MACc the data volume notification message of downlink data; Downlink data transmitting element 422 is used for sending downlink data to MACc; Overtime when retransmission timer 423, and do not receive when combinations of transport formats is selected Indication message that MACd gives MACc with the data volume notification message that the current data amount is retransmitted a downlink data.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (12)
1. the method for a data distributing is characterized in that, may further comprise the steps:
S1. medium access control MACd sends the data volume notification message of downlink data to MACc;
S2. Transmission Time Interval TTI then, MACc selects forward traffic channel FACH user Dedicated Control Channel DCCH/ Dedicated Traffic Channel DTCH combinations of transport formats;
S3.MACc sends combinations of transport formats to MACd and selects Indication message;
S4.MACd sends downlink data to MACc;
S5.MACc carries out buffer memory to described downlink data;
S6. at follow-up TTI, MACc sends the line data of leaving to the user.
2. the method for data distributing according to claim 1 is characterized in that, before step S1, also comprises: whether being notified to MACc before judging has data, if do not have, then carries out sending to MACc the step of the data volume notification message of downlink data.
3. the method for data distributing according to claim 1, it is characterized in that when carrying out step S1, MACd starts retransmission timer, when not receiving that combinations of transport formats is selected Indication message, retransmit the data volume notification message of a downlink data when overtime with the current data amount.
4. the method for data distributing according to claim 1, it is characterized in that, after step S1, also comprise: MACc is according to the data volume notification message of described downlink data, user's data existence mark is set, and record current wireless link controller RLC data in buffer amount.
5. the method for data distributing according to claim 1, it is characterized in that, before step S2, also comprise: judged whether that sub-district Common Control Channel CCCH/ BCCH channel of broadcast control data need to handle, if no, then carry out the selection of FACH user DCCH/DTCH combinations of transport formats.
6. the method for data distributing according to claim 1 is characterized in that, in step S2, determines that according to inserting User Priority and same priority robin scheduling principle the user handles sequencing.
7. as the method for data distributing as described in the claim 6, it is characterized in that in the described priority, signaling has precedence over the PS business.
8. the method for data distributing according to claim 1 is characterized in that when carrying out step S4, MACd is remaining data volume in MACc notifies current RLC buffer memory.
9. as the method for data distributing as described in the claim 8, it is characterized in that,, then start timer if remaining data volume is not 0 in the current RLC buffer memory.
10. data issuing system, described system comprises MACc and MACd, it is characterized in that,
Described MACc comprises:
The combinations of transport formats selected cell is used to select FACH user DCCH/DTCH combinations of transport formats;
Select the Indication message transmitting element, be used for sending combinations of transport formats and select Indication message to MACd;
Data buffer storage unit is used for the downlink data that MACd sends is carried out buffer memory;
Data transmission unit is used for sending described downlink data to the user;
Described MACd comprises:
Data volume notification message transmitting element is used for the data volume notification message to MACc transmission downlink data;
The downlink data transmitting element is used for sending downlink data to MACc.
11. as data issuing system as described in the claim 10, it is characterized in that, described MACd also comprises retransmission timer, when described retransmission timer overtime, and do not receive when combinations of transport formats is selected Indication message that MACd gives MACc with the data volume notification message that the current data amount is retransmitted a downlink data.
12. as data issuing system as described in the claim 10, it is characterized in that described MACc also comprises user's processing sequence determining unit, be used for determining that according to inserting User Priority and same priority robin scheduling principle the user handles sequencing.
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| CN200810239591A CN101754375B (en) | 2008-12-12 | 2008-12-12 | Data issuing method and system |
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| CN200810239591A CN101754375B (en) | 2008-12-12 | 2008-12-12 | Data issuing method and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103327620A (en) * | 2012-03-23 | 2013-09-25 | 中兴通讯股份有限公司 | Message sending method and system in common control channel |
| CN103686983A (en) * | 2012-09-17 | 2014-03-26 | 电信科学技术研究院 | Method and device for early processing of data transmission |
| CN103686983B (en) * | 2012-09-17 | 2016-11-30 | 电信科学技术研究院 | A kind of data send the method and device of advanced processing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100459607C (en) * | 2003-08-15 | 2009-02-04 | 华为技术有限公司 | Ground wireless access network flow control method for general mobile communication system |
| CN100461943C (en) * | 2005-05-26 | 2009-02-11 | 华为技术有限公司 | Channel priority dispatching and service priovity dispatching implementing method |
| CN101098295B (en) * | 2006-06-27 | 2010-10-20 | 大唐移动通信设备有限公司 | High speed downlink packet accessing medium access controlled multi-queue transmission method and device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103327620A (en) * | 2012-03-23 | 2013-09-25 | 中兴通讯股份有限公司 | Message sending method and system in common control channel |
| CN103686983A (en) * | 2012-09-17 | 2014-03-26 | 电信科学技术研究院 | Method and device for early processing of data transmission |
| CN103686983B (en) * | 2012-09-17 | 2016-11-30 | 电信科学技术研究院 | A kind of data send the method and device of advanced processing |
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| CN101754375B (en) | 2012-09-05 |
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