CN101127806B - Scheduling method for downlink voice IP service - Google Patents
Scheduling method for downlink voice IP service Download PDFInfo
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- CN101127806B CN101127806B CN2007101517049A CN200710151704A CN101127806B CN 101127806 B CN101127806 B CN 101127806B CN 2007101517049 A CN2007101517049 A CN 2007101517049A CN 200710151704 A CN200710151704 A CN 200710151704A CN 101127806 B CN101127806 B CN 101127806B
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Abstract
The utility model discloses a dispatching method for the descending VoIP business, comprising a step S302, a step S304 and a step S306; wherein the step S302 is that the wireless communication system transmits and retransmits firstly the pre-assigned wireless resources integration and MCS integration to the descending VoIP business grouping; the step S304 is that the base station makes option from the pre-assigned wireless resources integration and MCS integration and makes the first transmission or retransmission to the VoIP grouping through the selected wireless resources and MCS; the step S306 is that the terminal receives the first transmitted or retransmitted VoIP grouping according to the pre-assigned wireless resources integration and the MCS integration. The utility model has advantages of reducing fully the dispatching expenses and obtaining more dispatching flexibility and self-adaptive capacity.
Description
Technical field
The present invention relates to the communications field, and especially, relate to a kind of downlink voice IP (VoIP) business scheduling method.
Background technology
Fig. 1 shows the common structure of wireless communication system.As shown in Figure 1, wireless communication system mainly is made up of terminal, base station and core net.The connection that can have logic or physics between the base station as required, and the network of being made up of the base station is called wireless access network (RAN), is responsible for the Access Layer affairs, for example, the management of Radio Resource; The Radio Resource of uplink and downlink carries out being responsible for scheduling by the base station according to the mode of shared channel.The base station all is connected with core net, and each base station can be connected with one or more than one core net node (CN).Core net is responsible for the Non-Access Stratum affairs, such as charging, location management etc.The terminal be meant can with the equipment of network communication, such as mobile phone or notebook computer etc.Each terminal only is connected to a base station in the network usually on up direction.
At the wireless communication system that adopts the transmitted in packets mode (for example; Micro-wave access to global intercommunication (Worldwide Interoperability for Microwave Access; WiMAX) system and LTE (Long Term Evolution)) in, adopt the mode of dynamic dispatching to send the uplink and downlink data usually.
At present, VoIP is very important a kind of business, and for the GSM that adopts group technology, VoIP is professional must preferentially to be supported.Because the professional grouping of VoIP is very little, the expense ratio that therefore adopts dynamic dispatching to cause will be very big, voip user's capacity that this obviously can serious restriction system.Therefore, need to adopt a kind of scheduling mode more efficiently to come the VoIP business is dispatched.
To this, because the grouping of VoIP business is big or small and reach all very regular at interval, such as, during speaking, VoIP grouping of the every 20ms generation of speech coder, so system adopts the continuous dispatching mode to control the expense of signaling with saving to the VoIP business usually.Wherein, the mode of continuous dispatching is as shown in Figure 2.If VoIP has been adopted HARQ and quiet inhibition technology, then former regular will being affected of VoIP data transmission is used as replenishing of continuous dispatching mode so also need dynamic dispatching to control signaling.In the LTE system, this scheduling mode is known as semi-continuous scheduling (Semi-persistent Scheduling).
Usually, continuous dispatching mode or semi-continuous scheduling mode are allocated the Radio Resource of fixed position and size in advance for the VoIP business, and specify and send the employed modulation coding mode of VoIP data (Modulation Coding Scheme is called for short MCS).But the scheduling mode of this resource of specific radio in advance and MCS lacks flexibility, can't select appropriate wireless resources and MCS mode according to actual conditions.For this reason, having proposed continuous dispatching is set of radio resources of VoIP traffic assignments (Resource Set) and/or a MCS set when allocating Radio Resource in advance, rather than a fixed wireless resource and a MCS.
Yet, this means that the recipient needs corresponding blind decoding (Blind Decoding) ability, this obviously can increase the complexity of receiving equipment, improves the cost of receiving equipment.But in order to obtain certain dispatching flexibility and adaptive ability, receiving equipment complexity and cost increase that blind decoding causes possibly be worth.How to select in actual use also will according to circumstances decide.To having adopted the system of HARQ technology, after the data packet transmission failure, transmit leg retransmits according to feedback information.Under normal conditions, the probability of bust this is very little usually, and in order to reduce complexity, system comes re-transmission is indicated with dynamic dispatching usually.But,,, cause bust this and the probability that retransmits increases because that wireless channel environment changes is very fast for the terminal of high-speed motion.This is, indicates the dispatch expense that retransmits and cause with considerable with dynamic dispatching, therefore, needs further to reduce the professional signaling consumption that causes that retransmits of VoIP.
Yet, the technical scheme that can address the above problem is not proposed at present as yet.
Summary of the invention
Consider the problems referred to above and make the present invention that for this reason, main purpose of the present invention is to provide a kind of downlink voice IP service scheduling scheme.
According to embodiments of the invention, a kind of scheduling method for downlink voice IP service is provided.
This method comprises: wireless communication system is that set of radio resources and modulation coding mode set are allocated in transmission first and the repeating transmission first that downlink voice IP service divides into groups in advance; The base station is selected in pre-assigned set of radio resources and modulation coding mode set; And voice IP is divided into groups to send first or retransmit first through Radio Resource and the modulation coding mode of selecting; Wherein, the base station is being retransmitted the mode that adopts dynamic dispatching when voice IP divides into groups for the second time; The terminal receives the voice IP grouping of sending first or retransmitting first according to pre-assigned set of radio resources and modulation coding mode set.
Wherein, When need divide into groups to send first or retransmit first in the base station for the voice IP at terminal; If pre-assigned set of radio resources and/or modulation coding mode set are unavailable, then the base station utilizes the scheduling authorization indication signaling to specify Radio Resource and the modulating-coding fraction that sends or retransmit first first for the terminal; The terminal receives transmission first or repeating transmission first with the Radio Resource and the modulating-coding fraction of base station appointment.
In addition, in the method, pre-assigned set of radio resources can comprise one or more Radio Resources, and the modulation coding mode set comprises one or more modulation coding modes.
When pre-assigned set of radio resources comprises that a plurality of Radio Resources and/or the set of pre-assigned modulation coding mode comprise a plurality of modulation coding mode, base station selection is sent first or retransmitted first according to the resource operating position Radio Resource and/or modulation coding mode.And the resource operating position can comprise: whether quality of wireless channel and resource be available.
In addition, if send failure first, then retransmit first; Otherwise do not retransmit first.
Through technique scheme of the present invention, can fully reduce scheduling overhead, and can obtain bigger dispatching flexibility and adaptive ability.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the block diagram according to the wireless communication system of correlation technique;
Fig. 2 is the sketch map according to the continuous dispatching mode of correlation technique;
Fig. 3 is the flow chart according to the scheduling method for downlink voice IP service of the embodiment of the invention;
Fig. 4 is the flow chart according to the processing instance of the scheduling method for downlink voice IP service of the embodiment of the invention;
Fig. 5 is a sketch map of allocating Radio Resource in the method according to the embodiment of the invention in advance; And
Fig. 6 is the sketch map according to descending VoIP scheduling process in the method for the embodiment of the invention.
Embodiment
In the present embodiment, a kind of descending VoIP business scheduling method is provided.
Preferably, can carry out descending VoIP business scheduling method with flow process shown in Figure 3 according to present embodiment.
As shown in Figure 3, comprise according to the descending VoIP business scheduling method of present embodiment: step S302, wireless communication system are the transmission first of descending VoIP traffic packets and retransmit first and allocate set of radio resources (Resource Set) and MCS set in advance; Step S304, the base station is selected in pre-assigned set of radio resources and MCS set, and through Radio Resource and the MCS that selects VoIP is divided into groups to send first or retransmit first; And step S306, the terminal receives the VoIP grouping of sending first or retransmitting first according to pre-assigned set of radio resources and MCS set.
Wherein, When need divide into groups to send first or retransmit first in the base station for the VoIP at terminal; If pre-assigned set of radio resources and/or MCS set are unavailable, then the base station utilizes the scheduling authorization indication signaling to specify Radio Resource and the modulating-coding fraction that sends or retransmit first first for the terminal; The terminal receives transmission first or repeating transmission first with the Radio Resource and the modulating-coding fraction of base station appointment.
In addition, in the method, pre-assigned set of radio resources can comprise one or more Radio Resources, and the MCS set comprises one or more MCS.And, wireless communication system be the descending VoIP traffic packets send first with retransmit first the set of pre-assigned set of radio resources and modulation coding mode can be identical also can be inequality.
When pre-assigned set of radio resources comprises that a plurality of Radio Resources and/or pre-assigned MCS set comprise a plurality of MCS, base station selection is sent first or retransmitted first according to the resource operating position Radio Resource and/or MCS.And the resource operating position can comprise: whether quality of wireless channel and resource be available.
Need to prove that though in the method for retransmitting pre-configured Radio Resource and MCS first, retransmitting first always needs, and has only and just carries out the repeating transmission first that corresponding descending VoIP is divided into groups after transmission is failed first, otherwise do not retransmit first.That is to say, under the situation of sending failure first, just retransmit first, otherwise do not retransmit first.
With reference to Fig. 4, can above-mentioned processing be reduced to following process:
To combine concrete scene to describe embodiments of the invention below.
The LTE system that to suppose that a frequency bandwidth is arranged be 1.25MHz, in the subframe of 1ms, system has 12 Resource Block (RB).System is in the descending HARQ technology of having used, and the two-way time of descending HARQ, (Round-Trip Time RTT) was 6ms, and maximum transmission times is 3.Simultaneously, system is to the professional semi-continuous scheduling that adopts of descending VoIP.Four continuous RB (RB#3～6) in the sub-frame are allocated in the every transmission first of dividing into groups for the descending VoIP of voip user A at a distance from 20ms of system in advance, after each sends the HARQ RTT that allocates resource in advance first, allocate four continuous RB (RB#8～11) in the sub-frame in advance for retransmitting first.MCS adopts fixing QPSK2/3 mode.Each descending VoIP grouping needs a RB.
Like Fig. 5 and shown in Figure 6, the base station selects RB# 6 to divide into groups to send first for first VoIP at TTI# 1 from allocating in advance of transmission first set of radio resources RB#3～6, and the terminal is searched for VoIP simultaneously with QPSK2/3 constantly at TTI# 1 and divided into groups in RB#3～6.The terminal takes defeat the back to base station feedback NACK (Non-Acknoledge).Continue to divide into groups from selecting RB#9 to resend VoIP at TTI# 7 set of radio resources RB#8～11 for allocating in advance of repeating transmission first in the base station.Then, the terminal is searched for VoIP simultaneously with QPSK2/3 constantly at TTI# 7 and is divided into groups in RB#8～11, after the terminal takes defeat to base station feedback NACK (Non-Acknoledge).The base station selects RB#5 to continue to send said VoIP grouping at TTI# 13 through dynamic dispatching.At this moment, the terminal receives said VoIP grouping according to the dynamic dispatching indication signaling among the TTI# 13 in RB#5, and successfully receives the back to base station feedback ACK (Acknowledge).Next, second VoIP grouping sent at TTI# 21 in the base station.The base station is chosen at RB#4 and sends second VoIP grouping from RB#3～6.The terminal is searched for VoIP simultaneously with QPSK2/3 constantly at TTI#21 and is divided into groups in RB#3～6.The terminal receives successfully back to base station feedback ACK.The base station will discharge TTI# 27 and be this VoIP pre-assigned resource collection RB#8～11 of dividing into groups after receiving ACK.
Although be that example is described the present invention with the LTE system here; But those skilled in the art are to be understood that; The invention is not restricted to wireless communication system, and go for other communications field, in addition such as the LTE system; The invention is not restricted to the professional scheduling of descending VoIP, also applicable to the scheduling of other being allocated in advance resource.
In sum; The present invention is directed to the VoIP business features; On the basis of semi-continuous scheduling; The scheduling professional to descending VoIP proposes following dispatching method: continuous dispatching is that a set of radio resources and a MCS set are all allocated in transmission first and the repeating transmission first that VoIP divides into groups in advance, rather than a fixed wireless resource and a MCS.By means of technical scheme of the present invention, can fully reduce scheduling overhead, and can obtain bigger dispatching flexibility and adaptive ability.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a scheduling method for downlink voice IP service is characterized in that, comprising: wireless communication system is that set of radio resources and modulation coding mode set are allocated in transmission first and the repeating transmission first that downlink voice IP service divides into groups in advance; The base station is selected in said pre-assigned set of radio resources and the set of said modulation coding mode; And said voice IP is divided into groups to carry out saidly to send first or saidly retransmit first through the Radio Resource selected and modulation coding mode; Wherein, said base station is being retransmitted the mode that adopts dynamic dispatching when said voice IP divides into groups for the second time; The terminal receives the said voice IP grouping of sending first or retransmitting first according to said pre-assigned set of radio resources and the set of said modulation coding mode.
2. method according to claim 1; It is characterized in that; When said base station need be divided into groups to carry out said transmission first or retransmitted first for the voice IP at said terminal; If said pre-assigned set of radio resources and/or the set of said modulation coding mode are unavailable, it is that said Radio Resource and the modulating-coding fraction that sends or retransmit first first specified at said terminal that then said base station utilizes the scheduling authorization indication signaling; Said terminal receives said the transmission first or repeating transmission first with the Radio Resource and the modulating-coding fraction of the appointment of said base station.
3. method according to claim 1 is characterized in that, said pre-assigned set of radio resources comprises one or more Radio Resources, and said modulation coding mode set comprises one or more modulation coding modes.
4. method according to claim 3; It is characterized in that; When said pre-assigned set of radio resources comprised that a plurality of said Radio Resources and/or the set of pre-assigned said modulation coding mode comprise a plurality of said modulation coding mode, said said Radio Resource and/or the said modulation coding mode that sends or retransmit first first selected to carry out according to the resource operating position in said base station.
5. method according to claim 4 is characterized in that, said resource operating position comprises: whether quality of wireless channel and resource be available.
6. according to each described method in the claim 1 to 4, it is characterized in that,, then carry out said repeating transmission first if said the transmission first failed; Otherwise do not carry out said repeating transmission first.
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| CN2007101517049A CN101127806B (en) | 2007-09-27 | 2007-09-27 | Scheduling method for downlink voice IP service |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101547514B (en) * | 2008-03-25 | 2011-06-08 | 鼎桥通信技术有限公司 | Resource scheduling method |
| CN101645763B (en) * | 2008-08-06 | 2013-05-08 | 中兴通讯股份有限公司 | Dispatching method and uplink dispatching system for uplink data transmission |
| CN101674151B (en) | 2008-09-09 | 2014-06-11 | 株式会社Ntt都科摩 | Method for allocating resource, base station and mobile communication terminal |
| CN101686116B (en) * | 2008-09-23 | 2012-10-31 | 电信科学技术研究院 | Method, system and device for indicating progress of reserved hybrid automatic repeat request |
| JP2010114537A (en) * | 2008-11-04 | 2010-05-20 | Ntt Docomo Inc | Radio base station device and mobile terminal unit |
| CN101765211B (en) * | 2008-12-24 | 2013-01-02 | 电信科学技术研究院 | Allocation method, system and equipment for half-persistence scheduling resources |
| SG11201901003UA (en) * | 2016-08-12 | 2019-03-28 | Beijing Xiaomi Mobile Software Co Ltd | Resource scheduling method, scheduler, base station, terminal, and system |
| CN109600820B (en) * | 2017-09-30 | 2023-12-08 | 华为技术有限公司 | Data transmission method, network equipment and terminal equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1604685A (en) * | 2003-08-26 | 2005-04-06 | 三星电子株式会社 | Apparatus and method for assigning scheduling for uplink packet transmission |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1604685A (en) * | 2003-08-26 | 2005-04-06 | 三星电子株式会社 | Apparatus and method for assigning scheduling for uplink packet transmission |
Non-Patent Citations (1)
| Title |
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| Ericsson."Semi-persistent scheduling".《TSG-RAN WG1 ＃46bis 》.2006,1-5. |
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