CN101695194A - Multiplexing method for dispatching middle uplink logic channel in semi-static state by LTE systecm - Google Patents
Multiplexing method for dispatching middle uplink logic channel in semi-static state by LTE systecm Download PDFInfo
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Abstract
A multiplexin method for dispatching middle uplink logic channel in semi-static state of an LTE system comprises sending semi-static data by user UE on semi-static dispatching resources assigned on a base station, and data whose priority is higher than semi-static data on the semi-static dispatching resources are to be sent when the cycle of semi-static dispatching transmission reaches, UE generates conventional buffer state report BSR of high-priority data, the transmission of dispatching request SR is triggered when judging that residual resources after semi-static dispatching resources fill in semi-static data are insufficient for sending BSR and only semi-static dispatching resources exist. The embodiment of the invention can avoid increasing data transmission time delay and segmented overhead for semi-static dispatching.
Description
Technical field
The present invention relates to the mobile communication technology field, more specifically, relate to the multiplexing method of up logic channel in a kind of LTE system semi-persistent scheduling.
Background technology
In order to tackle the challenge of broadband access technology, satisfy the demand of novel business simultaneously, the 3GPP of International Standards Organization will have started the standardization effort of its Long Term Evolution (LTE) technology in the end of the year 2004.The LTE system adopts descending OFDM (OFDMA), the access way of uplink single-carrier frequency division multiple access (SC-FDMA), introduced multiple-input and multiple-output (MIMO) technology simultaneously, improved transmittability significantly, effectively resist the multipath interference, can dispose different bandwidth flexibly, under the situation of 20M bandwidth, target reaches up 50Mbps, the hardware circuit solution of descending 100Mbps.The evolution target of LTE is the communication network of all-IP, thus business such as the multimedia that can support to enrich, VoIP (Voice over IP), data download.Wherein VoIP is characteristic service of promoting mainly of LTE system.
The characteristics of LTE are that the VoIP business is the low speed business at a high speed, more evenly fix the time of advent but the VoIP business features is data.For this class particular service of VoIP, the LTE system adopts with the unexistent scheduling mode of communication system-semi-persistent scheduling mode in the past and controls the transmission of this type of business.
Semi-persistent scheduling is meant that by a semi-static transmission cycle that configures after once dispatching, user UE carries out the transmission and the reception of semi-static data according to the cycle of configuration and the resource of initial schedule.As use the semi-persistent scheduling mode to transmit the VoIP business, and the acquiescence semi-persistent scheduling transmission cycle of uplink is 20ms, if business initial scheduling is to be on the resource of n at resource number, then UE can send action by every 20ms on resource n.
The semi-persistent scheduling transmission cycle arrives, if have the data higher to need transmission than the semi-static data priority of current transmission in the UE side, multiplex process according to the up logic channel of present 3GPP agreement regulation, preferential transmission is triggered by this high-priority data on current available resources conventional buffer status report BSR and data thereof, the base station obtains the information of BSR then, makes the scheduling reaction.
Accompanying drawing 1 is the multiplexing method in semi-persistent scheduling of up logic channel of the prior art.Semi-static scheduling resources is when carrying out the semi-static data transmission, the data of higher priority arrived in the cycle of semi-persistent scheduling transmission in the accompanying drawing 1, the media interviews control MAC layer of UE generates conventional BSR and reports in this semi-static scheduling resources, and the data of higher priority can preferentially be transmitted.The data of BSR and higher priority can take semi-static scheduling resources, cause current data quantity transmitted to bring the more data segmentation greater than the bearing capacity of remaining semi-static scheduling resources, cause Radio Link control rlc layer.For example in accompanying drawing 1, a semi-static data bag is divided into two semi-static data sections.A part sends on semi-static scheduling resources, and another part dynamic dispatching sends.And the semi-static data that dynamic dispatching sends needs the base station scheduling resource to send, the corresponding increase of the time delay that data sementation brings.The data rate of semi-persistent scheduling itself is lower in addition, and the more data segmentation needs more expense with the data that do not have segmentation, relatively because each segment data all needs to increase packet header so that transmit this segment data.Accordingly, data are divided many more, then need more fragmentation overhead.
After the BSR of higher priority business is received in the base station, adopt the transmission of the mode data dispatching of dynamic dispatching.Because the data of higher priority have taken semi-static scheduling resources and finished transmission, caused and to have carried out segment transmissions because semi-static scheduling resources is occupied on the resource in dynamic dispatching in the semi-static data that semi-static scheduling cycle sends.And the semi-static data after the segmentation in the receiving terminal base station receive time delay from physical layer, all can increase to some extent to the time delay of rlc layer, cause the increase of data transmission delay.
Summary of the invention
The embodiment of the invention proposes the multiplexing method of up logic channel in a kind of LTE system semi-persistent scheduling, to avoid increasing the data transmission delay and the fragmentation overhead of semi-persistent scheduling.
The technical scheme of the embodiment of the invention is as follows:
(after treating that claims are determined, directly COPY comes to get final product)
From technique scheme, as can be seen, in embodiments of the present invention, on the semi-static scheduling resources that UE distributes in the base station, send semi-static data; When the cycle of semi-persistent scheduling transmission arrives, on described semi-static resource, have more to be sent than semi-static data priority higher priority data etc., UE generates the BSR of this high-priority data, judge that the surplus resources that described semi-static scheduling resources fills up after the semi-static data is not enough to send BSR, and when only semi-static scheduling resources being arranged, trigger the transmission of dispatch request SR.Avoid the segmentation of semi-static data, thereby reduced the data transmission delay and the fragmentation overhead of semi-persistent scheduling
Description of drawings
Fig. 1 is the multiplexing method schematic diagram in semi-persistent scheduling of up logic channel of the prior art;
Fig. 2 is the multiplexing method schematic diagram of up logic channel in the embodiment of the invention LTE system semi-persistent scheduling.
Embodiment
For making the purpose, technical solutions and advantages of the present invention express clearlyer, the present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
In the transmission of LTE system uplink, UE is multiplexing to each logic channel, makes restriction for the transmission content of data on the semi-static scheduling resources.Arrange according to priority of logical channels, when distributing transmission sequence, guarantee the normal transmission of semi-static data, reduce data transmission delay and fragmentation overhead.
In the existing LTE standard, in the up logic channel multiplex process, employing leakage bucket (Token Bucket) algorithm carries out processed and the transmitted bit numerical control system between a plurality of logic channels of same user, chain of command (RRC) layer can be the numerical value of a priority of each logic channel configuration, a preferential bit rate (PBR) and one are leaked the bucket size and are continued duration (BSD) and control multiplexing between the up logic channel, the transfer of data of the logic channel that the preferential priority that guarantees configuration is higher.
LTE agreement regulation, between each logic channel and media interviews control (MAC) control unit, the priority orders of its Various types of data is from high to low
1, the data that comprise the MAC Control Element or the up UL-CCCH channel of Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI).
2, other BSR MAC Control Element except that filling BSR.
3, power space report media interviews control (PHR MAC) control unit.
4, except that up UL-CCCH channel, the data of other logic channels.
5, comprise other MAC Control Element of filling BSR.
In embodiments of the present invention, UE is being activated when carrying out the semi-static data transmission for the first time, write down the semi-static scheduling resources size that current the be scheduled logical channel number that transmits and base station are distributed.The cycle of semi-persistent scheduling transmission arrives, only from the logic channel application semi-static data of record logical channel number correspondence.
The cycle of semi-persistent scheduling transmission arrives, and to be sent as data higher than semi-static data priority etc., the MAC layer of UE generates the BSR of higher priority data.By the semi-static scheduling resources size of UE record and the semi-persistent scheduling data that pass, semi-static scheduling resources after the judgement filling semi-static data is not enough to send the BSR of higher priority data, and UE only has semi-static scheduling resources this moment, then need not to consider the priority of data to be sent.Semi-static scheduling resources preferentially is used for the transmission of semi-static data.Certainly, if judge that semi-static scheduling resources is just filled up by semi-static data, at this moment, semi-static scheduling resources has not had resource to send the BSR of high-priority data, and UE only has semi-static scheduling resources this moment, and the priority of data to be sent is considered in same need not.And judge when described semi-static scheduling resources fills up surplus resources after the semi-static data and is enough to send BSR, then utilize the surplus resources fill up after the semi-static data to send described BSR, wherein also comprise, judge that described semi-static scheduling resources fills up the situation that surplus resources after the semi-static data just sends BSR, the same surplus resources that fills up after the semi-static data that utilizes sends described BSR.
UE sends dispatch request SR in ascending control channel PUCCH, request base station assigns resource is to send the data of high priority.In the LTE system, in Uplink Shared Channel PUSCH, transmit data, in PUCCH, send SR.The transmission of SR in PUCCH can't influence the transmission of semi-static data in PUSCH.
In the accompanying drawing 2, during initial activation, the semi-persistent scheduling transmission cycle arrives, the logical channel data of record institute transmission logic channel correspondence; The semi-persistent scheduling transmission cycle arrives, there are the data higher to arrive than semi-static data priority, then judge the BSR that the semi-static scheduling resources that sends after the semi-static data is not enough to send high-priority data, and UE only has semi-static scheduling resources, for the BSR of high-priority data, be considered as not having available ascending resource transmission BSR, then send dispatch request SR in PUCCH, request base station assigns resource is to send the data of high priority.And on the only semi-static resource of UE, send semi-static data in the logic channel of the logical channel number correspondence that writes down.UE receives the scheduling resource of base station, and dynamic dispatching sends the data of BSR and high priority.Realized on semi-static resource, transmitting semi-static data, on the dynamic dispatching resource, sent the data of BSR and high priority, thereby avoided increasing the data transmission delay and the fragmentation overhead of semi-persistent scheduling.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. the multiplexing method of up logic channel in the LTE system semi-persistent scheduling is characterized in that this method comprises:
On the semi-static scheduling resources that user UE distributes in the base station, send semi-static data;
When the cycle of semi-persistent scheduling transmission arrives, on described semi-static scheduling resources, there are data higher etc. to be sent than semi-static data priority, UE generates the conventional buffer status report BSR of the data of this high priority, judge that the surplus resources that described semi-static scheduling resources fills up after the semi-static data is not enough to send BSR, and when only semi-static scheduling resources being arranged, trigger the transmission of dispatch request SR.
2. according to the multiplexing method of up logic channel in the described LTE of the claim 1 system semi-persistent scheduling, it is characterized in that,
On the semi-static scheduling resources that described UE distributes in the base station, send semi-static data and specifically comprise,
UE writes down the logical channel number that current needs carry out semi-static transmission being activated for the first time when carrying out the semi-persistent scheduling transmission;
Cycle in each semi-persistent scheduling transmission arrives, only from the logic channel application semi-static data of described logical channel number correspondence.
3. according to the multiplexing method of up logic channel in claim 1 or the 2 described LTE system semi-persistent schedulings, it is characterized in that,
The described semi-static scheduling resources of described judgement fills up surplus resources after the semi-static data and is not enough to send BSR and comprises that also described semi-static scheduling resources is just filled up by semi-static data.
4. according to the multiplexing method of up logic channel in claim 1 or the 2 described LTE system semi-persistent schedulings, it is characterized in that, further comprise, judge when described semi-static scheduling resources fills up surplus resources after the semi-static data and is enough to send BSR, then utilize the surplus resources that fills up after the semi-static data to send described BSR.
5. according to the multiplexing method of up logic channel in the described LTE of the claim 4 system semi-persistent scheduling, it is characterized in that, the described semi-static scheduling resources of described judgement fills up surplus resources after the semi-static data to be enough to send BSR and also to comprise, judges that the surplus resources that described semi-static scheduling resources fills up after the semi-static data just sends BSR.
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| CN102036404A (en) * | 2010-12-24 | 2011-04-27 | 华为技术有限公司 | Method for transmitting data and user equipment |
| WO2012159285A1 (en) * | 2011-06-22 | 2012-11-29 | 华为技术有限公司 | Processing method and base station for transmitting voice over internet protocol based service data packet |
| CN102932934A (en) * | 2011-08-08 | 2013-02-13 | 普天信息技术研究院有限公司 | Method for simultaneously performing semi-persistent schedule (SPS) service and dynamic schedule (DS) service |
| WO2015176418A1 (en) * | 2014-05-22 | 2015-11-26 | 中兴通讯股份有限公司 | Scheduling, transmission method, and base station, terminal and system thereof |
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| WO2019213893A1 (en) * | 2018-05-10 | 2019-11-14 | Oppo广东移动通信有限公司 | Communication method and terminal device |
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| CN102932934B (en) * | 2011-08-08 | 2016-01-20 | 普天信息技术研究院有限公司 | A kind of method of simultaneously carrying out semi-persistent scheduling services and dynamic dispatching business |
| WO2015176418A1 (en) * | 2014-05-22 | 2015-11-26 | 中兴通讯股份有限公司 | Scheduling, transmission method, and base station, terminal and system thereof |
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| CN110741713A (en) * | 2017-06-15 | 2020-01-31 | 康维达无线有限责任公司 | Scheduling requests, status reports and logical channel prioritization |
| CN110741713B (en) * | 2017-06-15 | 2023-07-21 | 交互数字专利控股公司 | Scheduling request, status report and logical channel prioritization |
| WO2019191883A1 (en) * | 2018-04-02 | 2019-10-10 | Oppo广东移动通信有限公司 | Method for triggering scheduling request, and terminal device |
| CN111934831A (en) * | 2018-05-10 | 2020-11-13 | Oppo广东移动通信有限公司 | Communication method and terminal device |
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