CN103582149A - Resource scheduling method and device of VOLTE - Google Patents

Resource scheduling method and device of VOLTE Download PDF

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Publication number
CN103582149A
CN103582149A CN201310566880.4A CN201310566880A CN103582149A CN 103582149 A CN103582149 A CN 103582149A CN 201310566880 A CN201310566880 A CN 201310566880A CN 103582149 A CN103582149 A CN 103582149A
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voice packet
resource
volte
coded format
rtp bag
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CN103582149B (en
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张剑锋
吴兆礼
周宇恒
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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Abstract

The invention discloses a resource scheduling method and device of VOLET, and relates to the field of communication. The resource scheduling method and device are mainly used for resolving the problems that in the prior art, PRB resource scheduling is conducted only according to a current channel state, so that PRB resource waste is caused, and partial voice communication quality cannot meet the requirement. The resource scheduling method of the VOLET comprises the steps that 1: coded formats of voice packets are determined according to RTP packets corresponding to the voice packets; 2: data sizes and sending intervals of the voice packets to be sent are predicated according to the coded formats; 3: PRB resources are scheduled to transmit the voice packet to be sent according to the data sizes and the sending intervals. The resource scheduling method and device have the advantages that PRB resource allocation is reasonable, VOLET communication quality accords with various communication requirements, and simpleness and convenience are achieved.

Description

The resource regulating method of VOLTE and device
Technical field
The present invention relates to wireless communication field, relate in particular to resource regulating method and the device of a kind of VOLTE.
Background technology
VOLTE(Voice Over LTE, speech business based on LTE) be based on PS(Package Switch) packet switching service of data field, with respect to traditional based on CS(Circuit Switch) speech business of circuit hosting domain, promoted user experience, as the high communication quality, the call proceeding time is short, and can bring abundant business with the seamless integrated of RCS.
In the scheduling of resource process of existing VOLTE, when user UE (User Equipment) initiates VOLTE business, base station adopts semi-continuous scheduling to transmit the voice packet forming based on VOLTE more.
In semi-continuous scheduling, base station is according to adopting following steps to continue the scheduling of resource;
Step 1: according to RRC(Radio Resource Control): radio resource control signal deployment PRB resource (Physical Resource Block Physical Resource Block);
Step 2: activate PRB resource (Physical Resource Block Physical Resource Block) by PDCC;
Step 3: the code modulation mode of determining required voice packet according to channel condition at that time;
Step 4: after having determined code modulation mode, the data volume of required transmission has just been determined, and then determined PRB resource (Physical Resource Block Physical Resource Block) according to data volume; After this 20ms of take takies same PRB resource as the same user of one-period always, until continuous speech finishes.
Known from above-mentioned prior art, base station is when carrying out scheduling of resource, only considered channel condition at that time, and do not consider the requirement of current quality of the VOLTE business of different coding form, thereby can not meet the quality requirement of different business, and then cause the optimization of distribution of PRB resource inadequate.
Summary of the invention
(1) technical problem that the present invention solves
Optimize the scheduling strategy of PRB, the VoLTE service needed requiring to adapt to different Q os.。
(2) technical scheme of the present invention
For solving the problems of the technologies described above, the invention provides the resource regulating method of a kind of VOLTE, comprising:
Step S1: the coded format of determining voice packet according to the corresponding RTP bag of voice packet;
Step S2: predict the data volume of voice packet to be sent and send interval according to described coded format;
Step S3: according to voice packet to be sent described in described data volume and transmission interval scheduling PRB resource transmission.
Preferably, described step S1 is specially the coded format of determining voice packet according to the size of described RTP bag.
Preferably, described step S1 is specially the coded format of determining voice packet according to the PT territory of the timestamp of the size of described RTP bag, RTP bag and RTP bag.
Preferably, the method also comprises:
Step S4: obtain the speed bit stream of RTP bag, and judge whether the speed bit stream of described RTP bag changes, if changed, returns to step S1, if do not changed, returns to step S3.
Preferably, described step S3 specifically comprises:
According to the data volume of voice packet to be sent, dispatch the size of described PRB resource;
According to the interval data of the transmission interval scheduling PRB resource of described voice packet to be sent.
Preferably, described method also comprises:
S3 '. according to the size of the time delay of voice packet and/or the number of retransmissions adjustment PRB resource of dispatching.
The present invention also provides the resource scheduling device of a kind of VOLTE, and it comprises:
Coded format determining unit, in order to determine the coded format of voice packet according to the corresponding RTP bag of voice packet;
Predicting unit, in order to predict the data volume of voice packet to be sent and to send interval according to described coded format;
Scheduling unit, in order to according to described data volume with send voice packet to be sent described in interval scheduling PRB resource transmission.
Preferably, described coded format determining unit is specially the coded format of determining voice packet according to the size of described RTP bag.
Preferably, described coded format determining unit is specially the coded format of determining voice packet according to the PT territory of the timestamp of the size of described RTP bag, RTP bag and RTP bag.
Preferably, the method also comprises:
Speed bit stream acquiring unit, in order to obtain the speed bit stream of RTP bag, and judges whether the speed bit stream of described RTP bag changes, and when changing, triggers rescheduling of PRB resource.
Preferably, described scheduling unit specifically comprises: the first scheduling sublayer unit, in order to dispatch the size of described PRB resource according to the data volume of voice packet to be sent; The second scheduling sublayer unit, for according to the interval data of the PRB resource of the transmission interval scheduling of described voice packet to be sent.
Preferably, described device also comprises adjustment unit, for adjust the size of the PRB resource of dispatching according to the time delay of voice packet and/or number of retransmissions.
(3) beneficial effect of the present invention
The resource regulating method of VOLTE of the present invention and device, by determining that according to coded format band sends the data volume of voice packet and sends interval, can dispatch PRB resource intelligently, both guaranteed communication quality, optimized the distribution of resource simultaneously.
Accompanying drawing explanation
Fig. 1 is one of the schematic flow sheet of the resource regulating method of the VOLTE described in the embodiment of the present invention one;
Fig. 2 be the VOLTE described in the embodiment of the present invention two resource regulating method schematic flow sheet two;
Fig. 3 is one of the structural representation of the resource scheduling device of the VOLTE described in the embodiment of the present invention four;
Fig. 4 is one of the structural representation of the resource scheduling device of the VOLTE described in the embodiment of the present invention five.
Embodiment
Below in conjunction with Figure of description and embodiment, the present invention is described further.
Embodiment mono-:
As shown in Figure 1, the resource regulating method of the present embodiment VOLTE, comprising:
Step S1: the coded format of determining voice packet according to the corresponding RTP bag of voice packet;
Step S2: predict the data volume of voice packet to be sent and send interval according to described coded format;
Step S3: according to voice packet to be sent described in described data volume and transmission interval scheduling PRB resource transmission.
Described RTP(Real-time Transport Protocol RTP) be an Internet consensus standard, described the mode of program management multi-medium data real-time Transmission.
The composition of RTP comprises sequence number, net load sign, PT territory and timestamp etc.Wherein said sequence number is used for detecting the bag of losing.Described net load sign has been used for describing the coding of media.Described PT territory is PT Payload Type, conventionally accounts for 7, for the type of RTP message payload is described, concrete as GSM audio frequency, JPEM image etc.Described timestamp takies in RTP bag 32 conventionally, and time stamp has reflected the sampling instant of first eight hyte of this RTP message.Thereby the timestamp between corresponding adjacent two bags can be known transmission interval.
In concrete transmitting procedure, described RTP bag also comprises the identification informations such as frame indication, source identify, media inside is synchronous.Beginning and the end of described each frame of frame cue mark; Described source sign is used for the source of identification frames; Described media stab to detect different delay variation in a code stream inner synchronous service time, and shake is compensated.
So can determine by described RTP bag the coded format of voice packet in the present embodiment; Different coded format correspondences different transmission time interval and compression speeds; When compression speed is higher, redundant data in voice packet is more, thereby it is less that the loss of a packet will cause effective information to be lost, thereby need to reach by reducing the measures such as number of retransmissions the Optimized Operation of PRB resource accordingly, when data compression speed hour contrary.The number of times retransmitting is high, corresponding needed PRB resource is just many, based on above-mentioned principle, therefore in the resource regulating method of the VOLTE described in the present embodiment, changed traditionally when scheduling PRB resource, only according to channel, distributed the large or shared large problem of resource of the information of the part voice package losing that PRB resource causes.The present invention is according to communication quality requirement, and according to coded format, determined voice packet transmission data volume and send interval, dispatch PRB resource, thus coupling more between the demand of making and scheduling of resource, thereby reach the advantage of optimizing scheduling of resource.
In wherein said step S1, according to the corresponding RTP bag of voice packet, determine that the coded format of voice packet at least comprises following two kinds of methods:
Method one:
According to the size of described RTP bag, determine the coded format of voice packet.
Method two:
According to the PT territory of the timestamp of the size of described RTP bag, RTP bag and RTP bag, determine the coded format of voice packet.
The size of described RTP bag can be used for tentatively determining the coded format of voice packet; The timestamp of described RTP bag can be used for determining the transmission interval of voice packet, and concrete determines according to two adjacent R TP bag timestamps; Described PT has recorded medium type in territory.Method one is confirmed convenient, and speed is faster; And method two is determined type of coding according to size, timestamp and the PT of RTP bag in the parameter of common definite voice packet, accuracy rate is higher.In concrete actual application, can select as required.
Comprehensively above-mentioned, the resource regulating method of VOLTE described in the present embodiment and device, when carrying out PRB scheduling of resource, according to the coded format of voice packet, carry out, for some PRB resources for retransmitting of the corresponding overabsorption of voice packet of the high coded format of compression ratio, the voice packet that is directed to the coded format that compression ratio is low distributes some PRB resources for retransmitting accordingly less, thereby not only realized the Optimized Operation of PRB resource, guarantee effective transmission of voice packet simultaneously, guaranteed higher communication quality.
Embodiment bis-:
As shown in Figure 2, the resource regulating method of the present embodiment VOLTE, comprising:
Step S1: the coded format of determining voice packet according to the corresponding RTP bag of voice packet;
Step S2: predict the data volume of voice packet to be sent and send interval according to described coded format;
Step S3: according to voice packet to be sent described in described data volume and transmission interval scheduling PRB resource transmission.
Step S4: obtain the speed bit stream of RTP bag, and judge whether the speed bit stream of described RTP bag changes, if changed, returns to step S1, if do not changed, returns to step S3.
There is variation in the speed bit stream of RTP bag, there is variation in the parameter of ordinary representation voice packet, thereby in having implemented, this by step S4, obtains the speed bit stream of RTP bag, thereby obtain the variation of the speed bit stream of RTP bag, if occurred, change and restart step S1 to step S4, thereby reschedule PRB resource according to variation, thereby changed in traditional semi-continuous scheduling process, once user takies PRB resource and will take until the scheduling mode of sign off always, and the communication of having avoided PRB scheduling of resource changes waste and the high communication quality of the PRB resource causing.
In any one technical scheme described in above-described embodiment one or embodiment bis-, described step S3 specifically can comprise:
According to the data volume of voice packet to be sent, determine the size of the described PRB resource that will dispatch;
According to the transmission interval of described voice packet to be sent, determine the interval data of the described PRB resource that will dispatch.
Two attributes of the PRB resource that the size of described PRB resource and interval data are corresponding; The occupied time interval of PRB resource that described interval data is corresponding.So carry out the scheduling of PRB resource, realize simple and efficient.
Embodiment tri-:
The present embodiment, on the technical scheme basis described in embodiment mono-or two, also can comprise the size of the PRB resource that step S3 ' dispatches according to the time delay of voice packet and/or number of retransmissions adjustment.
Concrete as coded format, G.711a/u thereby compression speed is many compared with the redundant information in high corresponding voice packet, thereby reduction number of retransmissions that can be suitable, the concrete number of retransmissions that can make is 0 or 1, thereby the PRB resource occupation of corresponding and number of retransmissions can reduce.
As coded format G729 compression speed higher, simultaneously transmission delay is also large, to losing, therefore high rate is responsive can increase number of retransmissions, reduce time delay, thus the resource distribution increase for retransmitting of described PRB resource while dispatching PRB resource, and the PRB resource that reduces time delay also will increase accordingly.The concrete number of retransmissions that can be voice packet G.729 by coded format is increased to 3 to 5 times.
For coded format, be AMR-NB, this coded format is relatively responsive to packet loss, therefore improve accordingly number of retransmissions, guarantees effective transmission.Concrete can be that number of retransmissions is increased to 3 to 5 times, thus relatively more for the PRB scheduling of resource that retransmits that can be corresponding.
For coded format, be that AMR-WB is the code efficiency that belongs to higher, when its packet loss is no more than 2%, voice effectiveness affects is little, thereby can reduce number of retransmissions, concrete number of retransmissions can be reduced to 1 to 2 time, corresponding PRB resource is dispatched also and has been reduced accordingly.
In concrete scheduling process, described PRB resource comprises physical resource corresponding to time delay, corresponding to retransmitting and for the bandwidth transmitted or interface-free resources etc.
The scheduling that the PRB resource under several coded formats is provided that the present embodiment is concrete, with respect to the change of conventional art, is still not limited to this several coded formats.Concrete G.723 etc. also can be as.
Embodiment tetra-:
As shown in Figure 3, the present embodiment discloses the resource scheduling device of a kind of VOLTE, and it comprises:
Coded format determining unit (1), in order to determine the coded format of voice packet according to the corresponding RTP bag of voice packet;
Predicting unit (2), in order to predict the data volume of voice packet to be sent and to send interval according to described coded format;
Scheduling unit (3), in order to according to described data volume with send voice packet to be sent described in interval scheduling PRB resource transmission.
In the resource scheduling device of VOLTE in the present embodiment, the coded format unit (1) of setting is used for obtaining the coded format of voice packet; By predicting unit (2), according to coded format, predict the data volume of voice packet to be sent and send interval again and carry out scheduling resource, thereby considered coded format with respect to traditional dispatching method, thereby according to the scheduling resource that comes of the feature of corresponding coded format and communication quality requirement, reach distributing rationally of resource, guarantee good communication quality simultaneously
Described coded format determining unit can adopt at least following two kinds of modes to carry out the scheduling of coded format:
The first: described coded format determining unit is specially the coded format of determining voice packet according to the size of described RTP bag.Adopt the simple in structure of coded format determining unit described in the first, determine that the coded format speed of voice packet is fast.
The second: described coded format determining unit is specially the coded format of determining voice packet according to the PT territory of the timestamp of the size of described RTP bag, RTP bag and RTP bag.Coded format determining unit described in employing the second, the accurate rate definite to coded format is higher.
What described coded format determining unit was concrete can be pure logical circuit, can be also the functional unit of software and hardware combining; In specific implementation process, can be the corresponding device that comprises processor of each functional module, can be also a corresponding integrated complete processor of processing capacity of a plurality of functions.Concrete can be MCU (single-chip microcomputer), DSP(digital signal processor) and PLC(Programmable Logic Controller).In the memory cell of above-mentioned processor, be provided with and store the software of realizing corresponding function.
Embodiment five:
The present embodiment is on the basis of embodiment tetra-, and as shown in Figure 4, the resource scheduling device of VOLTE also can comprise:
Speed bit stream acquiring unit (4), in order to obtain the speed bit stream of RTP bag, and judges whether the speed bit stream of described RTP bag changes, and when changing, triggers rescheduling of PRB resource.
Rescheduling of described triggering PRB resource refers to by described coded format determining unit again to the definite coded format of the corresponding RTP bag of voice packet; By described predicting unit, scheduling unit, carry out successively its corresponding function again, thereby reschedule PRB resource.
In the arbitrary described technical scheme of embodiment tetra-and embodiment five, described scheduling unit specifically can comprise: the first scheduling sublayer unit, in order to determine the size of the described PRB resource of scheduling of wanting according to the data volume of voice packet to be sent; The second scheduling sublayer unit, for determining the interval data of the described PRB resource that will dispatch according to the transmission interval of described voice packet to be sent.
Two attributes of the PRB resource that the size of described PRB resource and interval data are corresponding; The occupied time interval of PRB resource that described interval data is corresponding.
Embodiment six:
The present embodiment is on embodiment tetra-or five basis, and described device also can comprise and also comprise adjustment unit, for the size of the PRB resource of dispatching according to the time delay of voice packet and/or number of retransmissions adjustment.
Embodiment tetra-to embodiment six provides a kind of device of the concrete resource regulating method of realizing VOLTE of the present invention, while carrying out the scheduling of resource of VOLTE with said apparatus, can guarantee good communication quality, guarantee the raising of the effective rate of utilization of resource simultaneously, also have simple in structurely simultaneously, realize easy advantage.
Above execution mode is only for illustrating the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.

Claims (12)

1. a resource regulating method of VOLTE, is characterized in that, comprising:
Step S1. determines the coded format of voice packet according to the corresponding RTP bag of voice packet;
Step S2. predicts the data volume of voice packet to be sent and sends interval according to described coded format;
Step S3. is according to voice packet to be sent described in described data volume and transmission interval scheduling PRB resource transmission.
2. the resource regulating method of VOLTE according to claim 1, is characterized in that, described step S1 is specially the coded format of determining voice packet according to the size of described RTP bag.
3. the resource regulating method of VOLTE according to claim 1, is characterized in that, described step S1 is specially the coded format of determining voice packet according to the PT territory of the timestamp of the size of described RTP bag, RTP bag and RTP bag.
4. according to the resource regulating method of the VOLTE described in claim 1-3 any one, it is characterized in that, also comprise:
Step S4. obtains the speed bit stream of RTP bag, and judges whether the speed bit stream of described RTP bag changes, if changed, returns to step S1, if do not changed, returns to step S3.
5. according to power, require the resource regulating method of the VOLTE described in 1-3 any one, it is characterized in that, described step S3 specifically comprises:
According to the data volume of voice packet to be sent, determine the size of the described PRB resource that will dispatch;
According to the transmission interval of described voice packet to be sent, determine the interval data of the PRB resource that will dispatch.
6. according to the resource regulating method of the VOLTE described in claim 1-3 any one, it is characterized in that, described method also comprises:
S3 '. the size of the PRB resource that will dispatch according to the time delay of voice packet and/or number of retransmissions adjustment.
7. a resource scheduling device of VOLTE, is characterized in that, comprising:
Coded format determining unit, in order to determine the coded format of voice packet according to the corresponding RTP bag of voice packet;
Predicting unit, in order to predict the data volume of voice packet to be sent and to send interval according to described coded format;
Scheduling unit, in order to according to described data volume with send voice packet to be sent described in interval scheduling PRB resource transmission.
8. the resource scheduling device of VOLTE according to claim 7, is characterized in that, described coded format determining unit is specially the coded format of determining voice packet according to the size of described RTP bag.
9. the resource regulating method of VOLTE according to claim 7, is characterized in that, described coded format determining unit is specially the coded format of determining voice packet according to the PT territory of the timestamp of the size of described RTP bag, RTP bag and RTP bag.
10. according to the resource scheduling device of the VOLTE described in claim 7-9 any one, it is characterized in that, also comprise:
Speed bit stream acquiring unit, in order to obtain the speed bit stream of RTP bag, and judges whether the speed bit stream of described RTP bag changes, and when changing, triggers rescheduling of PRB resource.
11. require the resource scheduling device of the VOLTE described in 7-9 any one according to power, it is characterized in that,
Described scheduling unit specifically comprises: the first scheduling sublayer unit, in order to dispatch the size of described PRB resource according to the data volume of voice packet to be sent; The second scheduling sublayer unit, for according to the interval data of the PRB resource of the transmission interval scheduling of described voice packet to be sent.
12. according to the resource scheduling device of the VOLTE described in claim 7-9 any one, it is characterized in that, described device also comprises adjustment unit, for adjust the size of the PRB resource of dispatching according to the time delay of voice packet and/or number of retransmissions.
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US10129806B2 (en) 2016-03-10 2018-11-13 At&T Mobility Ii Llc Method to assign IP traffic to desired network elements based on packet or service type
CN109076395A (en) * 2016-04-29 2018-12-21 华为技术有限公司 A kind of processing method of voice service and base station
CN109491805A (en) * 2018-10-18 2019-03-19 北京瑞卓喜投科技发展有限公司 A kind of bonus point rewarding service method and operation system based on block chain
CN109804586A (en) * 2016-10-07 2019-05-24 高通股份有限公司 Uplink voice and video source modeling
CN112511998A (en) * 2020-12-04 2021-03-16 素泰智能科技(上海)有限公司 Method for improving and adjusting VOLTE voice downlink time delay jitter and terminal equipment

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US10129806B2 (en) 2016-03-10 2018-11-13 At&T Mobility Ii Llc Method to assign IP traffic to desired network elements based on packet or service type
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CN109076395A (en) * 2016-04-29 2018-12-21 华为技术有限公司 A kind of processing method of voice service and base station
CN109804586A (en) * 2016-10-07 2019-05-24 高通股份有限公司 Uplink voice and video source modeling
CN109491805A (en) * 2018-10-18 2019-03-19 北京瑞卓喜投科技发展有限公司 A kind of bonus point rewarding service method and operation system based on block chain
CN112511998A (en) * 2020-12-04 2021-03-16 素泰智能科技(上海)有限公司 Method for improving and adjusting VOLTE voice downlink time delay jitter and terminal equipment

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