CN101772174B - Method for improving scheduling performance of uplink and user equipment - Google Patents
Method for improving scheduling performance of uplink and user equipment Download PDFInfo
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Abstract
The invention relates to the technical field of communication technology and discloses a method for improving scheduling performance of uplink and user equipment. The method comprises the following steps: sending BSR by UE, and starting up a retransmission buffer state report timer; and if receiving uplink resource distributed to the UE for new data transmission by a base station before the retransmission buffer state report timer is overtime, sending new data on the uplink resource, and stopping the retransmission buffer state report timer by the UE. The method and the user equipment are utilized, can avoid unnecessary routine BSR triggering and SR process, and saves the uplink resource.
Description
Technical field
The present invention relates to the communication technology, be specifically related to a kind of method and subscriber equipment that improves scheduling performance of uplink.
Background technology
LTE (Long Term Evolution, Long Term Evolution) system is based on the system of scheduling, and by base station assigns running time-frequency resource carrying data, terminal is according to control command downlink data receiving or the transmission upstream data of base station.
Transmitting uplink data is by base station scheduling, and the base station is the upstream data amount that terminal need to send to the foundation of terminal distribution ascending resource, i.e. the buffer status of terminal.Therefore terminal need to report BSR (Buffer Status Reports, buffer status report) to the base station, and the data volume in the buffer memory of report UE is for the scheduling of base station provides reference.The BSR type of terminal to report is divided into three kinds:
● conventional BSR (Regular BSR): when having than the data arrival of the data higher priority in the current cache or have data to arrive in originally for empty buffer memory, trigger conventional BSR;
● periodically BSR (Periodic BSR): UE sends start-up period BSR timer (PERIODIC BSR TIMER) after the complete BSR information, periodically triggers periodically BSR behind the BSR timer expiry;
● BSR (Padding BSR) incidentally: if UE is organizing MAC PDU (Medium Access Control Protocol Data Unit, the medium access control layer protocol data cell) time, except the data of needs transmission, also have resource to use, can trigger incidentally BSR.
After triggering BSR, but periodically BSR and incidentally BSR all to by the time have the ascending resource time spent just can report, certain, but do not have the ascending resource time spent can not trigger incidentally BSR yet.
But conventional BSR is not having the ascending resource time spent then can trigger SR (Scheduling Request, dispatch request) process, ascending resource is distributed to UE in the request base station, after ascending resource is distributed to UE in the base station, if this resource has just enough sent all upstream datas, then can not send out BSR, directly send upstream data; If this resource sends all upstream datas not, then preferentially report BSR (conventional BSR or periodicity BSR), the upstream data amount that the UE that the base station reports according to BSR again will transmit is carried out the subsequent transmission scheduling.
The priority of conventional BSR and periodicity BSR all is higher than general data, comprises whole available data amount informations in the UE buffer memory among the BSR.And incidentally the priority of BSR is lower than general data, according to operable stock number, may only comprise the BSR information of the highest partial logic channel group of priority, and this BSR is called truncated BSR, does not trigger periodically BSR timer.
For the reliability that guarantees that BSR reports, also introduced re-transmission buffer status report timer (RETX_BSR_TIMER) in the LTE system.
In the prior art, retransmit the buffer status report timer two kinds of Starting mode arranged:
(1) sends and to start behind the BSR (BSR that comprises three types) or restart;
(2) receive and start after distributing to the ascending resource of new data transmission or restart.
Retransmit the buffer status report timer expiry, when UE does not receive the uplink transmission resource scheduling and has data to send, trigger conventional BSR.
In realizing process of the present invention, the inventor finds in the prior art, and the re-transmission buffer status report timer in the existing protocol can cause the problem of following two aspects:
(1) retransmit the buffer status report timer expiry and trigger conventional BSR after state indefinite because the understanding mode of each UE is different in realizing, may frequently trigger conventional BSR;
(2) retransmit reliability that the buffer status report timer was used for just originally guaranteeing that BSR reported, distribute and just restart if receive ascending resource to new data transmission at every turn, physical constraints the scheduling interval between twice new data transmission.
That is to say, existing re-transmission buffer status report timer Starting mode can cause unnecessary dispatch request process, the waste resource.
Summary of the invention
The embodiment of the invention provides a kind of method and subscriber equipment that improves scheduling performance of uplink, triggers and the SR process to avoid unnecessary conventional BSR, saves ascending resource.
For this reason, the embodiment of the invention provides following technical scheme:
A kind of method that improves scheduling performance of uplink that the embodiment of the invention provides comprises:
UE sends BSR, and starts re-transmission buffer status report timer;
Distribute to the ascending resource of UE new data transmission if receive the base station before retransmitting the buffer status report timer expiry, then UE sends described new data at described ascending resource, and stops to retransmit the buffer status report timer.
A kind of method that improves scheduling performance of uplink that the embodiment of the invention provides comprises:
UE sends BSR, and starts re-transmission buffer status report timer;
Do not distribute to the ascending resource of UE new data transmission if before retransmitting the buffer status report timer expiry, receive the base station always, then retransmit the buffer status report timer and continue counting until overtime;
Behind described re-transmission buffer status report timer expiry, UE triggers conventional BSR, and stops to retransmit the buffer status report timer and it is set to 0.
A kind of subscriber equipment that the embodiment of the invention provides comprises:
Retransmit the buffer status report timer, be used for by predetermined timing counting;
Receiving element, being used for receiving the base station is the ascending resource that new data transmission is distributed;
The uplink unit, the ascending resource that is used for receiving at described receiving element sends transmission, be the ascending resource that new data transmission is distributed if before described re-transmission buffer status report timer expiry, receive the base station, then send described new data at described ascending resource, and triggering stops described re-transmission buffer status report timer; If sent BSR, trigger startup or restart described re-transmission buffer status report timer.
A kind of subscriber equipment that the embodiment of the invention provides comprises:
Retransmit the buffer status report timer, be used for by predetermined timing counting;
The uplink unit is used for sending BSR, and starts described re-transmission buffer status report timer;
Receiving element, being used for receiving the base station is the ascending resource that new data transmission is distributed; If described receiving element does not receive always that before described re-transmission buffer status report timer expiry the base station is the ascending resource that new data transmission is distributed, then described re-transmission buffer status report timer continues counting until overtime;
Conventional BSR trigger element is used for triggering conventional BSR behind described re-transmission buffer status report timer expiry, and triggers and stop described re-transmission buffer status report timer and it is set to 0.
The embodiment of the invention improves method and the subscriber equipment of scheduling performance of uplink, by introducing the mechanism that stops that retransmitting the buffer status report timer, restriction retransmits the buffer status report timer and only is used for guaranteeing the reliability that BSR reports, thereby avoided the time delay restriction between the new data transmission scheduling, the BSR that has solved the expansion of the re-transmission buffer status report timer function that prior art causes and made the mistake triggers and the SR process, has saved ascending resource.
Description of drawings
Fig. 1 is a kind of flow chart that the embodiment of the invention improves the method for scheduling performance of uplink;
Fig. 2 is the another kind of flow chart that the embodiment of the invention improves the method for scheduling performance of uplink;
Fig. 3 is the another kind of flow chart that the embodiment of the invention improves the method for scheduling performance of uplink;
Fig. 4 is the schematic diagram of twice new data transmission process of UE in the existing LTE system;
Fig. 5 is a kind of operating process that retransmits the buffer status report timer in the embodiment of the invention;
Fig. 6 is the another kind of operating process that retransmits the buffer status report timer in the embodiment of the invention;
Fig. 7 is a kind of structural representation of embodiment of the invention subscriber equipment;
Fig. 8 is the another kind of structural representation of embodiment of the invention subscriber equipment.
Embodiment
In order to make those skilled in the art person understand better the scheme of the embodiment of the invention, below in conjunction with drawings and embodiments the embodiment of the invention is described in further detail.
The embodiment of the invention improves method and the subscriber equipment of scheduling performance of uplink, by introducing the mechanism that stops that retransmitting the buffer status report timer, restriction retransmits the buffer status report timer and only is used for guaranteeing the reliability that BSR reports, thereby avoided the time delay restriction between the scheduling of new data scheduled transmission, the BSR that has solved the expansion of the re-transmission buffer status report timer function that prior art causes and made the mistake triggers and the SR process, has saved ascending resource.
Particularly, in embodiments of the present invention, the mechanism that stops that retransmitting the buffer status report timer comprises:
(1) stops to retransmit the buffer status report timer after re-transmission buffer status report timer expiry triggers conventional BSR, be about to it and set to 0, avoid UE to trigger again conventional BSR based on this timeout mode; And/or
(2) after BSR reports, if UE receives that the base station is the ascending resource that new data transmission is distributed, and then stops to retransmit the buffer status report timer.
Be elaborated below in conjunction with the scheduling process of the transmitting uplink data method to the embodiment of the invention.
With reference to Fig. 1, be a kind of flow chart that the embodiment of the invention improves the method for scheduling performance of uplink, mainly may further comprise the steps:
In this embodiment, after BSR reports, if UE receives that the base station is the ascending resource that new data transmission is distributed, and then stops to retransmit the buffer status report timer.Thereby can avoid unnecessary conventional BSR to trigger, save system resource.
As shown in Figure 2, be the another kind of flow chart that the embodiment of the invention improves the method for scheduling performance of uplink, mainly may further comprise the steps:
Step 202 judges whether re-transmission buffer status report timer is overtime; If so, execution in step 203 then; Otherwise execution in step 206;
Step 203 if UE has upstream data to need to send, triggers conventional BSR, and stops to retransmit the buffer status report timer and it is set to 0;
Step 206 judges whether to receive that the base station distributes to the ascending resource of UE new data transmission; If so, execution in step 207 then; Otherwise return step 202;
In this embodiment, after BSR reports, if UE receives that the base station is the ascending resource that new data transmission is distributed, and then stops to retransmit the buffer status report timer.And, after triggering conventional BSR, re-transmission buffer status report timer expiry stops to retransmit the buffer status report timer, and further avoided UE to trigger again conventional BSR based on this timeout mode, saved system resource.
As shown in Figure 3, be the another kind of flow chart that the embodiment of the invention improves the method for scheduling performance of uplink, mainly may further comprise the steps:
Step 302 is not distributed to the ascending resource of UE new data transmission if receive the base station before retransmitting the buffer status report timer expiry always, then retransmits the buffer status report timer and continues counting until overtime;
Step 303 behind described re-transmission buffer status report timer expiry, if UE still has data to need to send, triggers conventional BSR, and stops to retransmit the buffer status report timer and it is set to 0.
In this embodiment, after BSR reports and starts re-transmission buffer status report timer, after re-transmission buffer status report timer expiry triggers conventional BSR, stop to retransmit the buffer status report timer, thereby avoided UE to trigger again conventional BSR based on this timeout mode, saved system resource.Further, in this embodiment, if UE has received that before retransmitting the buffer status report timer expiry base station is the ascending resource that new data transmission is distributed, stop equally retransmitting the buffer status report timer, can further save system resource.
Compare below by the transmitting uplink data process to prior art and the embodiment of the invention, further specify the method for the embodiment of the invention.
With reference to Fig. 4, the schematic diagram of twice new data transmission process of UE in the existing LTE system:
1.UE1 send BSR and start and retransmit the buffer status report timer;
2. the new data transmission resource has been dispatched to UE1 in the base station, has guaranteed the transmission of UE1 high-priority data;
3. owing to resource-constrained, the uplink scheduling resource is temporarily distributed to UE1 in the base station;
4.UE1 re-transmission buffer status report timer expiry, trigger conventional BSR (this itself just runs counter to the original intention of Regular BSR: have high-priority data to need to send) owing to there not being ascending resource, trigger SR;
5. the base station thinks that UE1 has high-priority data to arrive, and sends resource and reports BSR to UE1;
6.UE1 report BSR, the base station is according to priority of logical channels, still other UE of priority scheduling;
Unless obtain the ascending resource of giving new data transmission of base station assigns, the process that UE1 can continue is above-mentioned " retransmit buffer status report timer expiry-〉 triggerings BSR-〉triggering SR-〉".
As seen, according to existing protocol, may cause the frequent triggering of conventional BSR, and limit the scheduling interval between the new data transmission twice.
With reference to Fig. 5, be a kind of operating process that retransmits the buffer status report timer in the method for the embodiment of the invention:
501, UE sends BSR, retransmits the buffer status report timer and starts;
502, if never receive the ascending resource scheduling of distributing to new data transmission, retransmit the buffer status report timer and continue counting until overtime;
503, trigger conventional BSR, retransmit the buffer status report timer and stop;
504, conventional BSR triggers the dispatch request process;
505, the base station is distributed ascending resource based on the dispatch request of UE to UE, and UE sends BSR with this ascending resource, retransmits the buffer status report timer restart.
With reference to Fig. 6, be the another kind of operating process that retransmits the buffer status report timer in the method for the embodiment of the invention:
601, UE sends BSR, retransmits the buffer status report timer and starts;
602, before retransmitting the buffer status report timer expiry, receive the ascending resource scheduling of distributing to new data transmission, UE sends uplink at ascending resource, and stops to retransmit the buffer status report timer.
Contrast by Fig. 5 and Fig. 6 and Fig. 4 as seen, after using the method for the embodiment of the invention, retransmit the buffer status report timer and only be used for guaranteeing the reliability that BSR reports, can not cause the time delay restriction between the new data transmission scheduling, thereby solved the re-transmission buffer status report timer function expansion that prior art is drawn, the BSR that makes the mistake triggers and the SR process, the problem of waste ascending resource.
One of ordinary skill in the art will appreciate that all or part of step that realizes in above-described embodiment method is to come the relevant hardware of instruction to finish by program, described program can be stored in the computer read/write memory medium, described storage medium, as: ROM/RAM, magnetic disc, CD etc.
The embodiment of the invention also provides a kind of subscriber equipment, as shown in Figure 7, is a kind of structural representation of this subscriber equipment:
In this embodiment, subscriber equipment 700 comprises: retransmit buffer status report timer 701, receiving element 702 and uplink unit 703.Wherein, retransmit buffer status report timer 701, be used for by predetermined timing counting; Receiving element 702, being used for receiving the base station is the ascending resource that new data transmission is distributed; Uplink unit 703, the ascending resource that is used for receiving at receiving element 702 sends transmission, and the data of transmission can be the new datas that comprises BSR, also can be the new datas that does not comprise BSR.If before described re-transmission buffer status report timer 701 is overtime, receive that the base station is the ascending resource that new data transmission is distributed, then send described new data at described ascending resource, and trigger and stop described re-transmission buffer status report timer 701; If sent BSR, trigger startup or restart described re-transmission buffer status report timer 701.
In this embodiment, if described receiving element 702 does not receive that always the base station is the ascending resource that new data transmission is distributed before described re-transmission buffer status report timer 701 is overtime, then described re-transmission buffer status report timer 701 continues counting until overtime.
This subscriber equipment can with reference to flow process shown in Figure 1, be not described in detail at this transmission course of upstream data.
In this embodiment, also can further comprise: conventional BSR trigger element 704 and dispatch request unit 705.Wherein, conventional BSR trigger element 704 is used for triggering conventional BSR after described re-transmission buffer status report timer 701 is overtime, and triggers and stop described re-transmission buffer status report timer 701 and it is set to 0; Dispatch request unit 705 is used for if described receiving element 702 does not still receive available ascending resource, triggering the dispatch request process after described conventional BSR trigger element 704 triggers conventional BSR;
Described uplink unit 703 also is used for utilizing described ascending resource to send BSR after described receiving element 702 is received the ascending resource that distributes based on described dispatch request the base station, and again triggers the described re-transmission buffer status report timer 701 of startup.
This subscriber equipment can with reference to flow process shown in Figure 2, be not described in detail at this transmission course of upstream data.
The subscriber equipment of the embodiment of the invention is after BSR reports, if UE receives that the base station is the ascending resource that new data transmission is distributed, and then stops to retransmit the buffer status report timer.And, after triggering conventional BSR, re-transmission buffer status report timer expiry stops to retransmit the buffer status report timer, and further avoided UE to trigger again conventional BSR based on this timeout mode, saved system resource.
The embodiment of the invention also provides a kind of subscriber equipment, as shown in Figure 8, is a kind of structural representation of this subscriber equipment:
In this embodiment, subscriber equipment 800 comprises: retransmit buffer status report timer 801, uplink unit 802, receiving element 803 and conventional BSR trigger element 804.Wherein, retransmit buffer status report timer 801, be used for by predetermined timing counting; Uplink unit 802 is used for sending BSR, and triggers the described re-transmission buffer status report timer 801 of startup; Receiving element 803, being used for receiving the base station is the ascending resource that new data transmission is distributed; If described receiving element 803 does not receive that always the base station is the ascending resource that new data transmission is distributed before described re-transmission buffer status report timer 801 is overtime, then described re-transmission buffer status report timer 801 continues counting until overtime; Conventional BSR trigger element 804 is used for triggering conventional BSR after described re-transmission buffer status report timer 801 is overtime, and triggers and stop described re-transmission buffer status report timer 801 and it is set to 0.
This subscriber equipment can with reference to flow process shown in Figure 3, be not described in detail at this transmission course of upstream data.
In the subscriber equipment of this embodiment, after BSR reports and starts re-transmission buffer status report timer, after triggering conventional BSR, re-transmission buffer status report timer expiry stops to retransmit the buffer status report timer, thereby avoided UE to trigger again conventional BSR based on this timeout mode, saved system resource.
Further, in the subscriber equipment of this embodiment, described uplink unit 802, also be used for before described re-transmission buffer status report timer 801 is overtime, receiving that the base station is the ascending resource that new data transmission is distributed at described receiving element 803, then send described new data at described ascending resource, and triggering stops described re-transmission buffer status report timer 801.Like this, can further save system resource.
Above the embodiment of the invention is described in detail, has used embodiment herein the present invention is set forth, the explanation of above embodiment just is used for helping to understand method and apparatus of the present invention; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (6)
1. a method that improves scheduling performance of uplink is characterized in that, comprising:
UE sends buffer status report BSR, and starts re-transmission buffer status report timer;
Distribute to the ascending resource of UE new data transmission if receive the base station before retransmitting the buffer status report timer expiry, then UE sends described new data at described ascending resource, and stops to retransmit the buffer status report timer;
Behind described re-transmission buffer status report timer expiry, UE triggers conventional BSR, and stops to retransmit the buffer status report timer;
If UE does not still receive available ascending resource, then trigger the dispatch request process;
UE utilizes described ascending resource to send BSR after receiving that the base station is the ascending resource of UE distribution based on described dispatch request, and restarts re-transmission buffer status report timer.
2. method according to claim 1 is characterized in that, also comprises:
If not receiving the base station before retransmitting the buffer status report timer expiry is the ascending resource that new data transmission is distributed always, then retransmits the buffer status report timer and continue counting until overtime.
3. a method that improves scheduling performance of uplink is characterized in that, comprising:
UE sends buffer status report BSR, and starts re-transmission buffer status report timer;
Do not distribute to the ascending resource of UE new data transmission if before retransmitting the buffer status report timer expiry, receive the base station always, then retransmit the buffer status report timer and continue counting until overtime;
Behind described re-transmission buffer status report timer expiry, UE triggers conventional BSR, and stops to retransmit the buffer status report timer and it is set to 0.
4. a subscriber equipment is characterized in that, comprising:
Retransmit the buffer status report timer, be used for by predetermined timing counting;
Receiving element, being used for receiving the base station is the ascending resource that new data transmission is distributed;
The uplink unit, the ascending resource that is used for receiving at described receiving element sends transmission, be the ascending resource that new data transmission is distributed if before described re-transmission buffer status report timer expiry, receive the base station, then send described new data at described ascending resource, and triggering stops described re-transmission buffer status report timer; If sent buffer status report BSR, trigger startup or restart described re-transmission buffer status report timer;
Conventional BSR trigger element is used for triggering conventional BSR behind described re-transmission buffer status report timer expiry, and triggers and stop described re-transmission buffer status report timer and it is set to 0;
The dispatch request unit is used for after described conventional BSR trigger element triggers conventional BSR, if described receiving element does not still receive available ascending resource, triggers the dispatch request process;
Described uplink unit also is used for utilizing described ascending resource to send BSR after described receiving element is received the ascending resource that distributes based on described dispatch request the base station, and again triggers the described re-transmission buffer status report timer of startup.
5. subscriber equipment according to claim 4 is characterized in that,
If described receiving element does not receive always that before described re-transmission buffer status report timer expiry the base station is the ascending resource that new data transmission is distributed, then described re-transmission buffer status report timer continues counting until overtime.
6. a subscriber equipment is characterized in that, comprising:
Retransmit the buffer status report timer, be used for by predetermined timing counting;
The uplink unit is used for sending buffer status report BSR, and starts described re-transmission buffer status report timer;
Receiving element, being used for receiving the base station is the ascending resource that new data transmission is distributed; If described receiving element does not receive always that before described re-transmission buffer status report timer expiry the base station is the ascending resource that new data transmission is distributed, then described re-transmission buffer status report timer continues counting until overtime;
Conventional BSR trigger element is used for triggering conventional BSR behind described re-transmission buffer status report timer expiry, and triggers and stop described re-transmission buffer status report timer and it is set to 0.
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| CN102802263A (en) * | 2011-05-25 | 2012-11-28 | 中兴通讯股份有限公司 | MAC (media access control) layer uplink dynamic scheduling method and device |
| CN103369509B (en) * | 2012-03-29 | 2018-02-27 | 中兴通讯股份有限公司 | A kind of reporting cached state method and terminal device |
| WO2015100680A1 (en) * | 2013-12-31 | 2015-07-09 | 华为技术有限公司 | Method, apparatus and system for controlling data transmission |
| ES2770061T3 (en) | 2015-01-29 | 2020-06-30 | Huawei Tech Co Ltd | Data transmission method and device |
| CN109121220B (en) * | 2017-06-23 | 2022-07-26 | 夏普株式会社 | Wireless communication method and apparatus |
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| CN111132365B (en) * | 2018-10-31 | 2022-07-12 | 展讯通信（上海）有限公司 | Uplink transmission method, device, computer readable storage medium and terminal |
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