CN102984659B - The report method of the buffer status report in a kind of TD-LTE system - Google Patents
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Abstract
The invention provides the report method of the buffer status report in a kind of TD-LTE system, comprise: when UE has multiple logic channel group to exist can pass data in current TTI, and when at least comprising the logic channel group of a group service in multiple logic channel group, if UE filling bit number is more than or equal to the short BSR of cluster? the bit number sum of MAC Control Element and its MAC head, and be less than the long BSR of cluster? the bit number sum of MAC Control Element and its MAC head, then UE utilizes the cluster preset to cut down BSR and carries the logic channel group # of a group service and the buffer data size of correspondence thereof, for notifying that eNodeB is except the logic channel group that cluster reduction BSR carries, other logic channel groups are also had to exist can pass data in current TTI.By the present invention, can notify that eNodeB cuts down except cluster the clustering logic channel group existence that BSR carries and can pass except data, also having other logic channel groups to exist can pass data; Meanwhile, the buffer data size carrying clustering logic channel group can be ensured, thus ensure priority scheduling cluster multi call business.
Description
Technical field
The present invention relates to the communication technology in TD-LTE system, the report method of the buffer status report (BSR) particularly in a kind of TD-LTE system.
Background technology
Buffer status report (BSR, BufferStatusReporting) is that the situation of data to be sent in the buffering area by current UE informs to eNodeB, and BSR provides the information of carrying out uplink scheduling for eNodeB.Current non-clustered BSR is used for reporting the buffer data size of logic channel group (LCG:LogicalChannelGroup) in non cluster service.Concrete non-clustered BSR is reported by MAC layer, comprises MAC head and corresponding MAC Control Element.At present, the form that reports of non-clustered BSR has three kinds, is respectively short BSR, cuts down BSR and long BSR.Wherein, three kinds of BSR forms are identified by the LCID in corresponding MAC head.
Short BSR (ShortBSR) is identical with the MAC Control Element form cutting down BSR (TruncatedBSR), as shown in Figure 1, include a LCGID territory and a corresponding cache size field, wherein, LCGID territory takies 2 bits, represent the numbering (numbering 0-numbering 3) of certain logic channel group, cache size field takies 6 bits, the buffer data size that the logic channel group of expression represented by LCGID territory is corresponding.
The MAC Control Element form of long BSR (LongBSR) as shown in Figure 2, comprises four cache size fields, represents the buffer data size that 4 logic channel groups (i.e. LCGIDs#0 to #3) are corresponding successively.
When UE is furnished with uplink authorization, allow remaining ascending resource to be used for BSR.When the filling bit number of UE is more than or equal to long BSRMAC control unit and corresponding MAC head, UE can transmit long BSR, reports the buffer data size of each logic channel group and correspondence thereof.Only can hold short BSR when filling bit number and cut down the MAC Control Element of BSR and corresponding MAC head, when cannot hold long BSRMAC control unit and corresponding MAC head, UE can only select transmit short BSR or cut down the MAC Control Element of BSR and corresponding MAC head, is used to indicate the buffer data size of current logic channel group.Particularly, if UE only have a logic channel group exist data cached need transmission time, transmit short BSR, and carry numbering and the buffer data size thereof of this logic channel group in short BSRMAC control unit; If UE have more than one snoop logic channel group exist data cached need transmission time, BSR is cut down in UE transmission, and cutting down the numbering and the buffer data size thereof that carry a highest logic channel group of priority in BSRMAC control unit, such eNodeB just can know that also having other logic channel groups to exist can pass data except the logic channel group that reduction BSR reports.
Technical at existing TD-LTE, increase the characteristic of group service, realize the developing direction that TD-LTE trunked communication system is trunked communication system.Based on the trunked communication system of TD-LTE technology, not only can support the various multimedia services of TD-LTE mobile communication system self, and basic trunked call service and Cluster Multimedia business can be provided, as voice group call service, voice individual calling, visual group calling, visual individual calling, broadcast & call, real-time video transmission etc.In order to embody the priority of group service from scheduling strategy, network side scheduler needs to distinguish and carries out the user of group service and carry out the user of non cluster service, and distinguishes group service and non cluster service that same user carries out simultaneously.For this reason, what the basis of TD-LTE technology was revised buffer status report (BSR) reports mechanism, increases the buffer memory BSR of group service.Particularly, cluster BSR contains the data cached of each logic channel group in group service.Each logic channel group can comprise one or more logic channel, and the information at every turn reported is the data volume sum of the logic channel buffering area in same group.At present, cluster BSR comprises two kinds, the short BSR of cluster and the long BSR of cluster.Wherein, the short BSR of cluster and the long BSR of cluster is also transmitted by MAC layer, comprises MAC head and corresponding MAC Control Element, specifically can by the corresponding cluster of the LCID domain identifier short BSRMAC control unit in MAC head and the long BSRMAC control unit of cluster.
The form of the short BSRMAC control unit of cluster as shown in Figure 3, comprise a TLCGID territory and a corresponding cache size field, wherein TLCGID territory is that clustering logic channel group id field indicates just in the logic channel group of report set group business buffer status, and field length is 2bits.The long BSR of cluster (TrunkingLongBSR) MAC Control Element form as shown in Figure 4, comprises four cache size fields, corresponding four logic channel groups (i.e. TLCGIDs#0 to #3).
Because current cluster BSR only comprises the short BSR of cluster and the long BSR of cluster, therefore, when UE filling bit number only can hold short BSRMAC control unit and corresponding MAC head, and the logic channel group having at least to contain group service this TTI have can pass data time, suppose there is more than one logic channel group to have can pass data at this TTI, report according to the short BSR of cluster, then eNodeB cannot know that other logic channel groups can pass data in addition except the logic channel group that of reporting contains group service; Cut down BSR according to non-clustered to report, it may not necessarily the cache information of report set group business, is unfavorable for the priority scheduling of group service like this.
Summary of the invention
The invention provides a kind of BSR report method, short BSRMAC control unit and corresponding MAC head only can be held at UE filling bit number, and the logic channel group having at least to contain group service this TTI have can pass data time, report the buffer data size of a logic channel group, and other logic channel groups can pass data in addition to notify eNodeB except the logic channel group that of reporting contains group service.
For achieving the above object, the present invention adopts following technical scheme:
A report method for buffer status report in TD-LTE system, comprising:
For the UE being configured with uplink authorization, when this UE has multiple logic channel group to exist can pass data in current TTI, and when at least comprising the logic channel group of a group service in described multiple logic channel group, if described UE filling bit number is more than or equal to the bit number sum of the short BSRMAC control unit of cluster and its MAC head, and be less than the bit number sum of the long BSRMAC control unit of cluster and its MAC head, then described UE utilizes the cluster preset to cut down BSR and carries the logic channel group # of a described group service and the buffer data size of correspondence thereof, for notifying that eNodeB is except the logic channel group that described cluster reduction BSR carries, other logic channel groups are also had to exist can pass data in current TTI,
Wherein, the cluster preset is cut down BSR and is comprised MAC head and cluster reduction BSRMAC control unit, in described MAC head, LCID is set to any one in reserved value, described cluster is cut down BSRMAC control unit and is comprised TLCGID territory and buffer memory size field, the logic channel group # of a described group service is carried in described TLCGID territory, and described cache size field carries buffer data size corresponding to the logic channel group of a described group service.
Preferably, described cluster cuts down the logic channel group # of group service that BSR carries and the buffer data size of correspondence is: in described TTI, there is the buffer data size that can pass clustering logic channel group numbering and the correspondence thereof in the logic channel group of the group service of data with highest priority logical channel.
Preferably, when described UE has multiple logic channel group can pass data in current TTI existence and at least comprise the logic channel group of a group service in described multiple logic channel group, if described UE filling bit number is more than or equal to the bit number sum of the long BSRMAC control unit of cluster and its MAC head, then described UE utilizes the long BSR of cluster to carry four each self-corresponding buffer data sizes of logic channel group.
Preferably, when described UE only has a logic channel group existence to pass data in current TTI and this logic channel group is the logic channel group of group service, then described UE utilizes the short BSR of cluster to be carried at existence in current TTI and can pass the logic channel group # of data and the buffer data size of correspondence thereof.
As seen from the above technical solution, in the present invention, introduce cluster and cut down BSR form, comprise MAC head and cluster reduction BSRMAC control unit, wherein cluster cuts down BSRMAC control unit for carrying the buffer data size of a logic channel group # and correspondence thereof.Data can be passed when UE has multiple logic channel group to exist in current TTI, and exist when can pass the logic channel group at least comprising a group service in the logic channel group of data, if filling bit number is more than or equal to the bit number sum of the short BSRMAC control unit of cluster and its MAC head, and be less than the bit number sum of the long BSRMAC control unit of cluster and its MAC head, then UE utilizes the cluster reduction BSR preset to be carried at existence in current TTI and can pass the logic channel group # of a group service of data and the buffer data size of correspondence thereof, for notifying that eNodeB is except the logic channel group that cluster reduction BSR carries, other logic channel groups are also had to exist can pass data in current TTI.By the way, can notify that eNodeB cuts down except cluster the clustering logic channel group existence that BSR carries and can pass except data, also having other logic channel groups to exist can pass data; Meanwhile, the buffer data size carrying clustering logic channel group can be ensured, thus ensure priority scheduling cluster multi call business.
Accompanying drawing explanation
Fig. 1 is the short BSR of non-clustered and the form schematic diagram cutting down BSRMAC control unit;
Fig. 2 is the form schematic diagram of the long BSRMAC control unit of non-clustered;
Fig. 3 is the form schematic diagram of the short BSRMAC control unit of cluster;
Fig. 4 is the form schematic diagram of the long BSRMAC control unit of cluster;
Fig. 5 is the form schematic diagram that cluster cuts down BSRMAC control unit;
Fig. 6 is the form schematic diagram of MACPDU.
Embodiment
For making object of the present invention, technological means and advantage clearly understand, below in conjunction with accompanying drawing, the present invention is described in further details.
Basic thought of the present invention is: introduce cluster and cut down BSR, for carrying logic channel group # and the buffer data size thereof of group service, and notify that eNodeB can pass except data except the logic channel group that this cluster reduction BSR carries exists, also there is other logic channel groups and exist and can pass data.
First provide the new cluster introduced in the present invention and cut down BSR.This cluster is cut down BSR and is comprised MAC head and cluster reduction BSRMAC control unit.Wherein, be that cluster cuts down BSRMAC control unit by the cluster corresponding MAC Control Element of LCID field identification cut down in BSRMAC head.Particularly, the value of LCID field cluster can cut down in the sub-head of BSRMAC is set to any one in reserved value, and the LCID corresponding with the short BSR of cluster and the long BSR of cluster distinguishes.
Cluster cuts down BSRMAC control unit form as shown in Figure 5, comprises a TLCGID territory and a corresponding cache size field.Wherein, TLCGID territory is clustering logic channel group id field, and instruction is just in the logic channel group of report set group business buffer status, and field length is 2bits; BufferSize territory is cache size field, and the data total amount of all logic channels in the logic channel group of instruction indicated by TLCGID territory, field length is 6bits.It is pointed out that in each logic channel group and can comprise one or more logic channel.In implementation procedure, according to the number supporting the kind of group service in trunked communication system to divide and determine to comprise in logic channel group logic channel.Above-mentioned cluster cuts down BSR for notifying eNodeB, and the logic channel group existence of carrying except this cluster reduction BSR can pass except data, and this UE also has other logic channel groups to exist can pass data.
BSR is that specific implementation is identical with other BSRMAC control units existing with the Form generation of MAC Control Element.This MAC Control Element is included in MACPDU (protocol Data Unit) and sends to eNodeB by UE.The each TB block of each UE can only transmit at most a MACPDU.A MACPDU comprises a MAC head, zero or multiple MACSDU (service data unit), zero or multiple MAC Control Element, and random filling part, as shown in Figure 6.
A MACPDU head comprises the sub-head of one or more MACPDU; Every height head corresponds to a MACSDU or MAC Control Element or filling part.Except the sub-head of last height head and regular length MAC Control Element in MACPDU, the sub-head of MACPDU comprises six head field R/R/E/LCID/F/L.In MACPDU, the sub-head of MAC Control Element of last height head and regular length comprises four head field R/R/E/LCID.Fill the corresponding sub-head of MACPDU and also comprise four head field R/R/E/LCID.
The sub-head of MACPDU to put in order with putting in order of corresponding MACSDU, MAC Control Element and filling part be corresponding.MAC Control Element is positioned at before all MACSDU.
As previously mentioned, BSR form representing with the sub-head of MACPDU with LCIDs field in MACPDU, as shown in table 1.
| Index | LCID value |
| 00000 | CCCH |
| 00001-01010 | The mark of logic channel |
| 01011-01110 | Retain |
| 01111 | Cluster cuts down BSR |
| 10000 | The short BSR of cluster |
| 10001 | The long BSR of cluster |
| 10010-11001 | Retain |
| 11010 | Power remaining space is reported |
| 11011 | C-RNTI |
| 11100 | Cut down BSR |
| 11101 | Short BSR |
| 11110 | Long BSR |
| 11111 | Fill |
Table 1
Cutting down BSR, short BSR and long BSR is the BSR form that non-clustered BSRMAC control unit uses, and they use LCID to be 11100,11101 and 11110 respectively.It is the BSR form that cluster BSRMAC control unit uses that cluster cuts down BSR, the short BSR of cluster and the long BSR of cluster.In table 1, LCID cluster being cut down to BSR use is 01111, can be any one in cluster reduction BSR appointment LCID reserved value, be not limited to 01111, also can choose other values from the numerical value retained in certain practical application.Equally, the short BSR of cluster and the long BSR of cluster does not determine its LCID used in existing protocol yet, and the LCID used respectively in table 1 is 10000 and 10001, but is also not limited thereto value.
The cluster introduced in the above-mentioned the present invention of being cuts down BSR, provides the report method flow process that cluster cuts down BSR below.
When UE is configured with uplink authorization, and when filling bit number is equal to, or greater than the bit number sum of BSRMAC control unit and its MAC head, will trigger the transmission of BSR, concrete BSR sends in the following manner:
1) when UE the logic channel group that current TTI has at least to contain group service exist can pass data time:
If A filling bit number is more than or equal to the bit number sum of the short BSR of cluster and its MAC head and is less than the bit number sum of the long BSR of cluster and its MAC head, be then handled as follows:
If there is more than one logic channel group to have can pass data at this TTI, then the cluster of the clustering logic channel group with highest priority logical channel is reported to cut down BSR; Otherwise, report the short BSR of cluster.Wherein, when reporting cluster to cut down BSR, TLCGID territory and buffersize territory is utilized to carry respectively the buffer data size of the numbering and this clustering logic channel group with the clustering logic channel group of highest priority logical channel.After eNodeB receives this cluster reduction BSR, namely can know that the logic channel group reported except this cluster reduction BSR exists and can pass except data, also there is other logic channel groups and exist and can pass data, thus prepare for follow-up data dispatch.
If B filling bit number is more than or equal to the bit number sum of the long BSR of cluster and its MAC head, report the long BSR of cluster.
2) when UE exist in current TTI the logic channel group that can pass data do not comprise group service time:
If A filling bit number is more than or equal to the bit number sum of short BSR and its MAC head, but be less than the bit number sum of long BSR and its MAC head, be then handled as follows:
If there is more than one logic channel group to have can pass data at this TTI, the non-clustered of the logic channel group with highest priority logical channel is reported to cut down BSR; Otherwise, report the short BSR of non-clustered.
If B filling bit number is more than or equal to the bit number sum of long BSR and its MAC head, report the long BSR of non-clustered.
So far, carry out the flow process that BSR reports to terminate.By above-mentioned report flow, when UE has the existence of multiple logic channel group to pass data and can pass data comprising the existence of clustering logic channel group, if the long BSR of cluster cannot be uploaded, BSR can be cut down by cluster and report eNodeB, there is numbering and the buffer data size of the clustering logic channel group of highest priority logical channel, and cut down BSR by this cluster, make eNodeB know except the logic channel group reported, this UE also has other logic channel groups to exist can pass data; Thus what ensure on the one hand to report is the buffer data size of clustering logic channel group, to ensure the priority scheduling of cluster multi call business, ensures that eNodeB correctly understands the current cache data status of UE side on the other hand, for follow-up data scheduling is ready.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (4)
1. a report method for the buffer status report in TD-LTE system, is characterized in that, the method comprises:
For the UE being configured with uplink authorization, when this UE has multiple logic channel group to exist can pass data in current TTI, and when at least comprising the logic channel group of a group service in described multiple logic channel group, if described UE filling bit number is more than or equal to the bit number sum of the short BSRMAC control unit of cluster and its MAC head, and be less than the bit number sum of the long BSRMAC control unit of cluster and its MAC head, then described UE utilizes the cluster preset to cut down BSR and carries the logic channel group # of a described group service and the buffer data size of correspondence thereof, for notifying that eNodeB is except the logic channel group that described cluster reduction BSR carries, other logic channel groups are also had to exist can pass data in current TTI,
When described UE exist in current TTI the logic channel group that can pass data do not comprise group service time, if described UE filling bit number is more than or equal to the bit number sum of short BSRMAC control unit and its MAC head and is less than the bit number sum of long BSRMAC control unit and its MAC head, then have more than one logic channel group current TTI have can pass data time, report the logic channel group with highest priority logical channel non-clustered cut down BSR; Only have a logic channel group current TTI have can pass data time, report the short BSR of non-clustered; If described UE filling bit number is more than or equal to the bit number sum of long BSRMAC control unit and its MAC head, report the long BSR of non-clustered;
Wherein, the cluster preset is cut down BSR and is comprised MAC head and cluster reduction BSRMAC control unit, in described MAC head, LCID is set to any one in reserved value, described cluster is cut down BSRMAC control unit and is comprised TLCGID territory and buffer memory size field, the logic channel group # of a described group service is carried in described TLCGID territory, and described cache size field carries buffer data size corresponding to the logic channel group of a described group service.
2. method according to claim 1, it is characterized in that, the logic channel group # of group service that described cluster reduction BSR carries and the buffer data size of correspondence thereof are: in described TTI, there is the buffer data size that can pass clustering logic channel group numbering and the correspondence thereof in the logic channel group of the group service of data with highest priority logical channel.
3. method according to claim 1 and 2, it is characterized in that, when described UE has multiple logic channel group can pass data in current TTI existence and at least comprise the logic channel group of a group service in described multiple logic channel group, if described UE filling bit number is more than or equal to the bit number sum of the long BSRMAC control unit of cluster and its MAC head, then described UE utilizes the long BSR of cluster to carry four each self-corresponding buffer data sizes of logic channel group.
4. method according to claim 1 and 2, it is characterized in that, when described UE only has a logic channel group existence to pass data in current TTI and this logic channel group is the logic channel group of group service, then described UE utilizes the short BSR of cluster to be carried at existence in current TTI and can pass the logic channel group # of data and the buffer data size of correspondence thereof.
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| CN104661311B (en) * | 2013-11-25 | 2019-07-23 | 中兴通讯股份有限公司 | Carrier wave polymerize lower buffer status report processing method, device and terminal |
| CN106465348A (en) * | 2014-12-31 | 2017-02-22 | 华为技术有限公司 | Method, apparatus and device for processing buffer area status information |
| CN108347784B (en) * | 2017-01-23 | 2023-10-13 | 华为技术有限公司 | Resource scheduling method, wireless access network equipment and terminal equipment |
| WO2018227566A1 (en) * | 2017-06-16 | 2018-12-20 | Oppo广东移动通信有限公司 | Information transmission method and device |
| CN109392008B (en) * | 2017-08-11 | 2021-01-29 | 华为技术有限公司 | Communication method and device |
| KR102342692B1 (en) * | 2017-09-28 | 2021-12-24 | 텔레호낙티에볼라게트 엘엠 에릭슨(피유비엘) | Method and apparatus for wireless communication |
| CN110741675A (en) * | 2017-10-24 | 2020-01-31 | Oppo广东移动通信有限公司 | Data transmission method, terminal equipment and network equipment |
| CN109756987B (en) * | 2017-11-03 | 2021-02-23 | 电信科学技术研究院 | Buffer state reporting method, terminal and computer readable storage medium |
| CN110022578B (en) * | 2018-01-10 | 2021-01-08 | 维沃移动通信有限公司 | BSR reporting method and mobile terminal |
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