CN101483918B - Buffer condition report sending method and apparatus thereof - Google Patents
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- CN101483918B CN101483918B CN2008100651543A CN200810065154A CN101483918B CN 101483918 B CN101483918 B CN 101483918B CN 2008100651543 A CN2008100651543 A CN 2008100651543A CN 200810065154 A CN200810065154 A CN 200810065154A CN 101483918 B CN101483918 B CN 101483918B
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Abstract
An embodiment of the invention provides a method for sending buffer area status report and a device thereof. The method is used for confirming BSR trigger event and sending BSR by setting upper sending buffer area occupancy factor threshold, or time delay threshold, or finger. The method can provide buffer area status information with timely, high efficiency and giving attention to advanced serve requirement, at the same time reduces BSR sending cost, accordingly, the method is suitable for various operation that is sensitivity to packet loss ratio, time delay or requirement having advanced serve order.
Description
Technical field
The present invention relates to moving communicating field, particularly relate to the sending method and the device thereof of Buffer Status Report.
Background technology
Long Term Evolution (LTE, Long Term Evolution) project is primarily aimed at the 3GPP tissue and prepares the mobile communication architectural framework of promotion in the period of following 10.In prior LTE system, scheduling is unified to the uplink of different terminals in the base station, thereby improves channel utilization.The process of up dynamic dispatching specifically comprises the steps:
Step 1, terminal send the uplink scheduling information report to the base station under timer or Event triggered.In the uplink scheduling information report, the most important thing is Buffer Status Report (BSR, Buffer StatusReport), also may comprise power headroom (Power Headroom) report etc. in addition.
Step 2, base station are the terminal distribution resource according to the uplink scheduling information of available resources situation and all terminals by certain strategy, and the authorization message of generation terminal uplink.
Step 3, base station send to terminal with this authorization message.
Step 4, terminal are according to this authorization message uplink data sending and control information.
In the LTE system, in order to reduce the expense of reporting uplink schedule information, last row buffer in the terminal (the normally up transmission buffering area of wireless chain control layer) can be divided into groups according to the priority of corresponding radio bearer (RB, Radio Bearer), again grouping report buffer state.Also can control the frequency that sends BSR, promptly further reduce the expense of reporting uplink schedule information by the trigger condition of control BSR.Existing BSR trigger condition mainly contains following several:
1, total buffer size increases greater than thresholding.
The size of each up transmission buffering area all is limited in the terminal, and this method utilizes the situation of total buffer to judge whether the trigger event into BSR.
2, surpass thresholding from the time that sent since the BSR last time.
3, high-priority data arrives buffering area.
According to the qos requirement of business and the factors such as urgency level of signaling, the LTE system is that each up RB distributes corresponding priority level, and carries out ascending resource scheduling and data transmission according to priority.
By above-mentioned disclosed technical scheme as can be known, the defective of prior art is:
1) do not consider the full degree of row buffer on each, may produce the packet loss phenomenon, be unsuitable for the business higher the packet loss susceptibility owing to up transmission buffering area overflows;
2) susceptibility of time delay is required different business, system is difficult to determine suitable time delay thresholding, thereby produces redundant BSR or data are dropped, and is unsuitable for the business higher to time delay sensitivity.
Problems such as 3) higher priority is provided with requirement and can causes system to be difficult to determine suitable relative priority level as high priority, thereby produces redundant BSR, and the BSR report is untimely, this difference service and RB priority orders that will cause system to provide is inconsistent.
Therefore, BSR sending method of the prior art can't provide in time for the base station, efficient, take into account the buffer status information that priority service requires, can not satisfy packet loss or time delay sensitivity higherly, perhaps need the business need of serving according to priority orders.
Summary of the invention
The objective of the invention is to solve BSR sending method of the prior art can't satisfy for the base station provides in time, efficient, the problem of taking into account the buffer status information that priority service requires.
Embodiments of the invention provide a kind of sending method of Buffer Status Report, it is characterized in that, may further comprise the steps:
Terminal is that radio bearer is provided with up transmission buffer performance thresholding, when the actual occupancy of up transmission buffering area reaches described up transmission buffer performance thresholding, thinks Buffer Status Report BSR trigger event, perhaps
Terminal is that radio bearer is provided with up transmission buffering area time delay thresholding, when the stand-by period of queue heads data reaches described up transmission buffering area time delay thresholding in the up transmission buffering area, thinks the BSR trigger event, perhaps
Terminal is each up transmission buffer configuration pointer, described pointer is used to indicate in the corresponding buffering area position of report data, in the terminal the up transmission buffering area of limit priority have not the data of report or all up transmission buffering areas etc. all the highest data of pending data medium priority when being not report data, think the BSR trigger event;
Described terminal generates BSR, and described BSR is sent to the base station.The embodiment of the invention also provides a kind of device, it is characterized in that, comprising:
Trigger condition is provided with the unit, is used to be provided with thresholding;
The BSR trigger element when being used for determining that trigger condition satisfies, triggering BSR and generates transmitting element;
BSR generates transmitting element, is used for generating BSR according to the triggering of BSR trigger element, and described BSR is sent to the base station.
The present invention is by determining the BSR incident and sending the method for BSR, when reducing BSR transmission expense, can provide in time for the base station, efficient, take into account the buffer status information that priority service requires, thereby be applicable to the packet loss sensitivity, to delay sensitive, or the different business of priority service sequence requirement is arranged.
Description of drawings
Fig. 1 sends the schematic flow sheet of BSR when up transmission resource is arranged in the embodiment of the invention;
Fig. 2 sends the schematic flow sheet of BSR when not having up transmission resource in the embodiment of the invention;
Fig. 3 is that the BSR of third embodiment of the invention triggers schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The first embodiment of the present invention specifically may further comprise the steps:
Step 1, terminal are that RB is provided with up transmission buffer performance thresholding.
This thresholding can be provided with the susceptibility of packet loss according to the pairing RB of buffering area, and span is [0,100%].The maximum packet loss of RB acceptable is big more, and promptly RB is low more to the susceptibility of packet loss, then the up transmission buffer performance thresholding of this RB just can be provided with big more; Accordingly, if the maximum packet loss of RB acceptable is more little, promptly RB is high more to the susceptibility of packet loss, then the up transmission buffer performance thresholding of this RB just can be provided with smaller.For example, the maximum packet loss of RB acceptable is 1%, and then this thresholding can be set to 80%; The maximum packet loss of RB acceptable is 0.1%, and then this thresholding should be less than 80%, and for example, this thresholding can be set to 60%.
When the actual occupancy of step 2, up transmission buffering area reaches the thresholding of above-mentioned setting, think the BSR trigger event.
When the formation of up transmission buffering area changed, terminal write down the actual occupancy of this up transmission buffering area, and with step 1 in the thresholding that is provided with compare, if this actual occupancy reaches the thresholding of above-mentioned setting, then think the BSR trigger event.In this step, it can be that data arrive this buffering area or data shift out situations such as this buffering area that the formation of up transmission buffering area changes.
Step 3, terminal generate BSR, and BSR is sent to the base station.
As shown in Figure 1, behind definite BSR trigger event, terminal generates BSR when acquisition enough sends the uplink authorization resource of BSR, and BSR is sent to the base station in the sub-frame of uplink at described uplink authorization resource place.Because system is provided with may be different, terminal both can use preallocated ascending resource to send BSR, also can wait for the uplink authorization that the base station sends, and obtained to send BSR again to the base station behind this uplink authorization.
Further, as shown in Figure 2, when terminal discovery system does not have enough uplink authorization resources to send BSR, send SR (Scheduling Request, dispatch request) earlier and give the base station, obtain after the uplink authorization of base station transmission, terminal generates BSR, and sends it to the base station.
First embodiment of the invention can notify BSR at once, effectively avoids up transmission buffering area to overflow the packet loss that causes, and is suitable for the business higher to the packet loss susceptibility.
Second embodiment of the invention specifically may further comprise the steps:
Step 1, terminal are that RB is provided with up transmission buffering area time delay thresholding.
This thresholding can be provided with the susceptibility of time delay according to the pairing RB of up transmission buffering area.RB acceptable maximum delay is big more, and promptly RB is low more to the susceptibility of time delay, then the up transmission buffering area time delay thresholding of this RB just can be provided with big more; Accordingly, if RB acceptable maximum delay is more little, promptly RB is high more to the susceptibility of time delay, then the up transmission buffering area time delay thresholding of this RB just can be provided with smaller.This thresholding is not more than RB acceptable maximum delay usually, further, can concrete threshold value be set according to the time of scheduling, data processing and uplink (comprising that HARQ retransmits) etc.For example, RB acceptable maximum delay is 40ms, and then this thresholding can be set to 10ms; RB acceptable maximum delay is 60ms, and then this thresholding should be greater than 10ms, and for example, this thresholding can be set to 30ms.
When the stand-by period of queue heads data reaches the thresholding of above-mentioned setting in step 2, the up transmission buffering area, think the BSR trigger event.
When data entered up transmission buffering area, terminal was the timer that thresholding is set in the step 1 for these data start a timing value.If this timer regularly arrives, then think the BSR trigger event.Further, when these data are reported (promptly these data become report data), or shift out this buffering area, or timer is when arriving regularly, its corresponding timer of terminal deletion.
Step 3, this step are identical with step 3 among first embodiment, repeat no more.
Second embodiment of the invention can notify BSR at once, effectively avoids data in the waits for too long of up transmission buffering area and be dropped, and is suitable for the business higher to time delay sensitivity.
Third embodiment of the invention specifically may further comprise the steps:
Step 1, terminal are each up transmission buffer configuration pointer, and this pointer is used to indicate in the corresponding buffering area position of report data.
Terminal is each up transmission buffer configuration pointer, and with the starting position of the corresponding buffering area of pointed.When terminal generates BSR, each pointer is moved in the corresponding buffering area rearmost position of report data.If have the part report data shift out the buffering area at place, then the sensing of respective pointer will move to the rearmost position of report data.If all report data shift out the buffering area at place, then with the starting position of corresponding this buffering area of pointed.If BSR reports failure, then the pointer of each buffering area is pointed to again the position of preceding each pointed of this BSR report.
In step 2, the terminal the up transmission buffering area of limit priority have report data not or up transmission buffering area etc. all the highest data of pending data medium priority when being not report data, think the BSR trigger event.
When data enter or shift out certain up transmission buffering area, terminal checks according to the priority orders (from high to low) of up transmission buffering area whether pending data is arranged in all up transmission buffering areas etc., if pending data is arranged in certain up transmission buffering area etc., and be not in the starting position of buffering area with the corresponding pointer of this buffering area, then do not think the BSR trigger event; If pending data is arranged in certain up transmission buffering area etc., and be in the starting position of buffering area, think then etc. that all the highest data of pending data medium priority are not report data, think the BSR trigger event with the corresponding pointer of this buffering area.Further, if exist other buffering areas (for example to have identical priority in the terminal with above-mentioned buffering area, priority is A), and these priority are the starting position that the corresponding pointer of other buffering areas of A all is in its buffering area, think then etc. that all the highest data of pending data medium priority are not report data, think the BSR trigger event.
As shown in Figure 3, terminal has 5 up transmission buffering area A, B, C, D, E, and initial condition is sky, and priority is respectively 1,2,3,4,5.Wherein, the priority of A is 1, and the degree of priority of expression A is the highest, and the priority of E is 5, and the degree of priority of expression E is minimum.
At t0 constantly, new data enters E, and other buffering areas are sky.At this moment, have only the data that just enter E for waiting pending data, and its priority waits in the pending data at all the highlyest, so think the BSR trigger event.
At t1 constantly, new data enters B, and the pending data of grade is arranged among D and the E, and A and C are sky.At this moment, the priority of the medium pending data of B is the highest, and is not report data, therefore thinks the BSR trigger event.
At t2 constantly, new data enters A, and data are all arranged in all buffering areas, and has report data among the A.At this moment, the priority of the medium pending data of A is the highest, but wherein comprises report data, does not therefore think the BSR trigger event.
At t3 constantly, have new data to enter among the D that has data to exist originally, and A and B be sky, pending data is all arranged among C and the E etc.At this moment, the priority of the medium pending data of C is the highest, but these pending datas are report data, does not therefore think the BSR trigger event.
At t4 constantly, terminal obtains the uplink authorization resource, and has data to shift out A, and there is not report data in the remaining data among the A, and B and C be sky, and pending data is all arranged among D and the E etc.At this moment, have the pending data that waits that not report is arranged among the up transmission buffering area A of limit priority, therefore think the BSR trigger event.
At t5 constantly, have data to shift out C, C be a sky, and A and B be sky, and pending data is all arranged among D and the E etc., and among the D etc. pending data be not report data.At this moment, the priority of the medium pending data of D is the highest, and is not report data, therefore thinks the BSR trigger event.
Step 3, this step are identical with step 3 among first embodiment, repeat no more.
Third embodiment of the invention can notify BSR at once, effectively avoids causing the priority higher data not by timely up transmission owing in time not sending BSR, thereby better carries out the scheduling based on priority, improves throughput of system.
It will be appreciated by those skilled in the art that operator can be according to system requirements, select a kind of or arbitrary combination in the BSR sending method that the above embodiment of the present invention relates to for use, and do not exceed invention scope of the present invention.
A kind of device that fourth embodiment of the invention provides, this device comprise that threshold setting unit, BSR trigger element, BSR generate transmitting element.
Trigger condition is provided with the unit and is used to be provided with corresponding thresholding, concrete, this unit is provided with up transmission buffer performance thresholding, and perhaps up transmission buffering area time delay thresholding perhaps is used for indicating a kind of or arbitrary combination of the pointer of the position of report data in the corresponding buffering area.
The trigger condition that the BSR trigger element is used for being provided with according to trigger condition the unit setting judges whether the trigger event into BSR
BSR generates transmitting element and links to each other with the BSR trigger element, generates BSR when being used for determining the BSR trigger event, and BSR is sent to the base station.
Optionally, this device can also comprise the uplink authorization unit, is used to send SR to the base station, and receives uplink authorization.
The embodiment of the invention is by determining the BSR incident and sending the method for BSR, when reducing BSR transmission expense, can provide in time for the base station, efficient, take into account the buffer status information that priority service requires, thereby be applicable to the packet loss sensitivity, to delay sensitive, or the different business of priority service sequence requirement is arranged.
It below only is 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 principle of the invention; 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 sending method of a Buffer Status Report BSR is characterized in that, may further comprise the steps:
Terminal is that radio bearer is provided with up transmission buffer performance thresholding, when the actual occupancy of up transmission buffering area reaches described up transmission buffer performance thresholding, thinks the BSR trigger event, perhaps
Terminal is that radio bearer is provided with up transmission buffering area time delay thresholding, when the stand-by period of queue heads data reaches described up transmission buffering area time delay thresholding in the up transmission buffering area, thinks the BSR trigger event, perhaps
Terminal is each up transmission buffer configuration pointer, described pointer is used to indicate in the corresponding buffering area position of report data, in the terminal the up transmission buffering area of limit priority have report data not or all up transmission buffering areas etc. all the highest data of pending data medium priority when being not report data, think the BSR trigger event;
Described terminal generates BSR, and described BSR is sent to the base station.
2. method according to claim 1 is characterized in that, described terminal sends to the base station with described BSR and is specially:
Described terminal sends to described base station with described BSR in the sub-frame of uplink of enough authorization resources is arranged.
3. method according to claim 1 is characterized in that, further comprises:
Described terminal sends dispatch request to described base station, obtains after the uplink authorization, and terminal generates BSR and sends to described base station.
4. method according to claim 1 is characterized in that,
The radio bearer of up transmission buffering area correspondence is low more to the susceptibility of packet loss, and described up transmission buffer performance thresholding is big more;
The radio bearer of up transmission buffering area correspondence is high more to the susceptibility of packet loss, and described up transmission buffer performance thresholding is more little.
5. method according to claim 1 is characterized in that,
The radio bearer of up transmission buffering area correspondence is low more to the susceptibility of time delay, and described up transmission buffering area time delay thresholding is big more;
The radio bearer of up transmission buffering area correspondence is high more to the susceptibility of time delay, and described up transmission buffering area time delay thresholding is more little.
6. method according to claim 1 is characterized in that, further comprises:
When described terminal is each up transmission buffer configuration pointer, with the starting position of the corresponding up transmission buffering area of described pointed;
When described terminal generates BSR, each pointer is moved in the corresponding up transmission buffering area rearmost position of report data;
All are when report data has shifted out buffering area, with the starting position of the described buffering area of corresponding pointed in the described up transmission buffering area;
If BSR reports failure, with the position of the pointed of each buffering area each pointed before described BSR report.
7. method according to claim 1 is characterized in that, further comprises:
When data entered or shift out up transmission buffering area, whether described terminal pending data such as had in all up transmission buffering areas of sequential search from high to low according to up transmission priority levels of buffers.
8. method according to claim 7 is characterized in that,
Pending data is arranged in the up transmission buffering area etc., and be in the starting position of described up transmission buffering area, think then etc. that all the highest data of pending data medium priority are not report data with the corresponding pointer of described up transmission buffering area;
9. method according to claim 8 is characterized in that,
If exist other up transmission buffering areas to have identical priority A in the terminal with described up transmission buffering area, and described priority is the starting position that the corresponding pointer of other buffering areas of A all is in described other up transmission buffering areas, thinks then etc. that all the highest data of pending data medium priority are not report data.
10. method according to claim 1 is characterized in that,
When described terminal obtains the uplink authorization resource, in the up transmission buffering area of limit priority not report data is arranged, and the data in the described buffering area can not once send and finish, and think that then the up transmission buffering area of limit priority has not report data in the described terminal.
11. a device is characterized in that, comprising:
Trigger condition is provided with the unit, is used to be provided with thresholding;
Buffer Status Report BSR trigger element when being used for determining that trigger condition satisfies, triggering BSR and generates transmitting element;
BSR generates transmitting element, is used for generating BSR according to the triggering of BSR trigger element, and described BSR is sent to the base station; Wherein:
Described trigger condition is provided with the unit and specifically is used to radio bearer that up transmission buffer performance thresholding is set, when the actual occupancy that described BSR trigger element specifically is used for up transmission buffering area reaches described up transmission buffer performance thresholding, trigger BSR and generate transmitting element; Perhaps,
Described trigger condition is provided with the unit and specifically is used to radio bearer that up transmission buffering area time delay thresholding is set, described BSR trigger element specifically is used in the up transmission buffering area stand-by period of queue heads data when reaching described up transmission buffering area time delay thresholding, triggers BSR and generates transmitting element; Perhaps,
Described trigger condition is provided with the unit and specifically is used to each up transmission buffer configuration pointer, described pointer is used to indicate in the corresponding buffering area position of report data, the up transmission buffering area that described BSR trigger element specifically is used for limit priority have report data not or all up transmission buffering areas etc. all the highest data of pending data medium priority when being not report data, trigger BSR and generate transmitting element.
12. device according to claim 11 is characterized in that, also comprises:
The uplink authorization unit is used to send dispatch request to the base station, and receives uplink authorization.
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| CN2008100651543A CN101483918B (en) | 2008-01-08 | 2008-01-08 | Buffer condition report sending method and apparatus thereof |
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| CN2008100651543A CN101483918B (en) | 2008-01-08 | 2008-01-08 | Buffer condition report sending method and apparatus thereof |
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| CN111294969B (en) * | 2019-01-31 | 2022-03-01 | 展讯通信（上海）有限公司 | BSR triggering method and device, storage medium and user equipment |
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