CN102883420B - Transmission scheduling method and device in sleep mode - Google Patents

Transmission scheduling method and device in sleep mode Download PDF

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CN102883420B
CN102883420B CN201210407811.4A CN201210407811A CN102883420B CN 102883420 B CN102883420 B CN 102883420B CN 201210407811 A CN201210407811 A CN 201210407811A CN 102883420 B CN102883420 B CN 102883420B
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duration
buffer memory
transmission
packet
time delay
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CN102883420A (en
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郭叶
陈岚
雷韶华
倪茂
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Institute of Microelectronics of CAS
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Institute of Microelectronics of CAS
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Abstract

The embodiment of the invention discloses a transmission scheduling method and a transmission scheduling device in a sleep mode. When the mobile terminal is in a monitoring state in a sleep mode, calculating a first transmission duration required when all data packets to be transmitted in a cache of the current period are transmitted; judging whether the first transmission time length is longer than the monitoring window time length specified by the protocol; if so, calculating a second transmission time length required when all the data packets to be transmitted with the waiting time exceeding the time delay limit value are transmitted when the monitoring windows in the next period in the cache of the current period arrive, and adjusting the monitoring window time length specified by the protocol to the second transmission time length; and transmitting the data packet to be transmitted which will exceed the time delay limit value of the data packet within the second transmission time length, and putting the data packet to be transmitted which will not exceed the time delay limit value of the data packet into a buffer memory of the next period. According to the embodiment of the invention, the energy-saving efficiency of the mobile terminal can be improved, and meanwhile, the data loss is avoided.

Description

Transmission dispatching method under a kind of sleep pattern and device
Technical field
The present invention relates to wireless communication technology field, particularly relate to the transmission dispatching method under a kind of sleep pattern and device.
Background technology
The bursty transmission of a large amount of high data rate, will cause mobile terminal to be in idle condition in section sometime, and then the power consumption that mobile terminal can be caused unnecessary.In order to save the power of mobile terminal, IEEE 802.16e standard definition power save mechanism: working mode of mobile terminal is divided into sleep pattern and normal mode of operation.In a sleep mode, periodically alternately occur sleeping window and audit window, within the period that sleeping window is corresponding, any data will not transmitted to mobile terminal in base station, mobile terminal can close one or more hardware device within this time period, thus it is minimum that power consumption is in; Within the period that audit window is corresponding, mobile terminal is in upstate, and base station can connect with mobile terminal, realizes transfer of data.
According to different service connections to QoS (Quality of Service, service quality) demand different, IEEE 802.16e standard definition three kinds of power saving class: save class I and be mainly used in BE (BestEffort, Best-Effort service) or the service connection of NRT-VR (Non-Real Time Variable Rate, non real-time Packet Service); Save the service connection that class II is mainly used in UGS (Unsolicited Grant Service, unsolicited grant service) or RT-VR (Real Time Variable Rate, real-time packet service); Save class III to be mainly used in as the multicasts such as periodic ranging connect.Wherein, relevant parameter is also defined for saving class II, IEEE802.16e standard: the duration T of sleeping window s, audit window duration T lwith the initial frame number etc. of sleeping window, the Frame of specifying in the initial frame number of sleeping window starts, and saves class II and is activated.Refer to Fig. 1, it is the structural representation of sleep pattern in the saving class II of prior art.
Realizing in process of the present invention, the present inventor finds that in prior art, at least there are the following problems: in saving class II, the duration T of sleeping window swith the duration T of audit window lbe fixedly installed, for the USG that transmitted data rates is constant, adopt fixing windowing mechanism can realize power to save, and for the variable RT-VR of transmitted data rates, fixing windowing mechanism is adopted to reduce the energy-saving efficiency of mobile terminal, meanwhile, also loss of data may be caused.Such as, refer to the transmitting and scheduling schematic diagram under sleep pattern in the saving class II of the prior art shown in Fig. 2, wherein, in cycle 1 in a sleep mode, because audit window is by the restriction of fixing duration, cause mobile terminal all cannot be sent by the packet that the real time business of three in this cycle connects at the audit window of current period, tentation data bag S3 does not send at the audit window in cycle 1, then can only wait until that the audit window in cycle 2 sends when arriving again.And before the audit window in cycle 2 arrives, the stand-by period of packet S3 is very possible beyond the limits value of its transmission delay, mobile terminal is forced to exit sleep pattern, and then pattern hand off signaling expense between terminal and base station, can be produced, reduce the energy-saving efficiency of mobile terminal, meanwhile, the loss of packet S3 also may be caused with the spilling of buffer memory.In addition, in the cycle 3 in a sleep mode, if the data packet number connected in real time in this cycle is very few, audit window there will be idle frame, thus cause the unnecessary wasting of resources.
Summary of the invention
In order to solve the problems of the technologies described above, embodiments provide the transmission dispatching method under a kind of sleep pattern and device, improve the energy-saving efficiency of mobile terminal, meanwhile, also avoiding occurring loss of data.
The embodiment of the invention discloses following technical scheme:
A transmission dispatching method under sleep pattern, comprising:
When being in the listening state under sleep pattern, calculate when the first transmission duration required during all data to be transmitted bags in the buffer memory transmitting current period;
Judge whether described first transmission duration is greater than the audit window duration that agreement specifies;
If described first transmission duration is greater than the audit window duration that agreement specifies, calculate and to transmit its stand-by period the second transmission duration required when will exceed the data to be transmitted bag of its time delay limits value when all audit windows at next cycle arrives in the buffer memory of transmission current period, audit window duration agreement specified is adjusted to described second and transmits duration;
Transmit when all audit windows at next cycle arrive in described second transmission duration and transmit the data to be transmitted bag that its stand-by period will exceed its time delay limits value, and when all audit windows at next cycle being arrived, transmit the buffer memory that next cycle put into by data to be transmitted bag that its stand-by period can not exceed its time delay limits value.
A transmitting and scheduling device under sleep pattern, comprising:
Computing unit, for when being in the listening state under sleep pattern, calculates when the first transmission duration required during all data to be transmitted bags in the buffer memory transmitting current period;
Judging unit, for judging whether described first transmission duration is greater than the audit window duration that agreement specifies;
First adjustment unit, if be greater than for described first transmission duration the audit window duration that agreement specifies, calculate and to transmit its stand-by period the second transmission duration required when will exceed the data to be transmitted bag of its time delay limits value when all audit windows at next cycle arrives in the buffer memory of transmission current period, audit window duration agreement specified is adjusted to described second and transmits duration;
First transmitting and scheduling unit, transmit for transmitting when all audit windows at next cycle arrive in described second transmission duration the data to be transmitted bag that its stand-by period will exceed its time delay limits value, and when all audit windows at next cycle being arrived, transmit the buffer memory that next cycle put into by data to be transmitted bag that its stand-by period can not exceed its time delay limits value.
As can be seen from the above-described embodiment, in order to reduce the switching between sleep pattern and mode of operation, the size of dynamic conditioning audit window is carried out according to the data volume in mobile terminal buffer memory, thus the signaling consumption reduced between terminal and base station, the power consumption of effective reduction communication system, meanwhile, also avoid occurring loss of data.
Further, for all packets in mobile terminal buffer memory, it not the scheduling simply first sent out first according to time delay value, but consider qos parameter and time delay restriction, again packet is ranked, send in order according to Queue sequence, thus reduce business time delay, improve terminal real-time, sleep pattern and dispatching method are combined, improve mobile terminal low-power consumption efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of sleep pattern in the saving class II of prior art;
Fig. 2 is the transmitting and scheduling schematic diagram in the saving class II of prior art under sleep pattern;
Fig. 3 is the flow chart of the transmission dispatching method under a kind of sleep pattern of the embodiment of the present invention one announcement;
Fig. 4 is the transmitting and scheduling schematic diagram saved in the present invention in class II under sleep pattern;
Fig. 5 is the flow chart of the transmission dispatching method under the another kind of sleep pattern of the embodiment of the present invention two announcement;
Fig. 6 is the method flow diagram of a kind of mobile terminal transmission data that the embodiment of the present invention three discloses;
Fig. 7 is the structure chart of the transmitting and scheduling device under a kind of sleep pattern of the embodiment of the present invention four announcement;
Fig. 8 is the structure chart of the transmitting and scheduling device under the another kind of sleep pattern of the embodiment of the present invention four announcement.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the embodiment of the present invention below in conjunction with accompanying drawing.
Embodiment one
Refer to Fig. 3, it is the flow chart of the transmission dispatching method under a kind of sleep pattern of the embodiment of the present invention one announcement, and the method comprises the following steps:
Step 301: when being in the listening state under sleep pattern, calculates when the first transmission duration required during all data to be transmitted bags in the buffer memory transmitting current period;
Such as, first, the frame number of each audit window needed for data to be transmitted bag in the buffer memory of transmission current period is calculated respectively:
T LKi = F ti R × D frame ( i = 1,2 . . . n )
Wherein, F tifor the data volume of i-th data to be transmitted bag in buffer memory, change in time, unit is bit; R is the data rate of mobile terminal, and unit is bit/s; D framebe the duration of a frame, unit is s/frame; T lKifor the audit window frame number in buffer memory needed for i-th data to be transmitted bag.
Secondly, the totalframes needed for all data to be transmitted bags in the buffer memory of transmission current period is calculated:
wherein, T lKfor totalframes, totalframes is, the required first transmission duration when all data to be transmitted bags in the buffer memory transmitting current period.
Step 302: judge whether described first transmission duration is greater than the audit window duration that agreement specifies;
As what mention in background technology of the present invention, IEEE 802.16e standard definition audit window duration T l, by the audit window duration T that the calculate in step 301 first transmission duration and agreement specify lsize compare, judge whether the first transmission duration is greater than the audit window duration T that agreement specifies l.
Step 303: if described first transmission duration is greater than the audit window duration that agreement specifies, calculate and to transmit its stand-by period the second transmission duration required when will exceed the data to be transmitted bag of its time delay limits value when all audit windows at next cycle arrives in the buffer memory of transmission current period, audit window duration agreement specified is adjusted to described second and transmits duration;
Wherein, if the first transmission duration is greater than the audit window duration that agreement specifies, illustrate that in the buffer memory of current period, all data to be transmitted bags of institute's buffer memory cannot all transfer out in the audit window that agreement specifies.Therefore, need from all data to be transmitted bags the buffer memory of current period, pick out and transmit when the audit window of next cycle arrives the data to be transmitted bag that its stand-by period will exceed its time delay limits value, and these data to be transmitted are wrapped in current period transfer out, to avoid the problems such as the low and loss of data of the mobile terminal energy-saving efficiency that occurs in prior art.
Concrete, judge that the packet in the buffer memory of current period transmits the method whether its stand-by period can exceed its time delay limits value and is when the audit window of next cycle arrives: dynamic calculation packet is stranded in the dynamic buffering duration in the buffer memory of current period before transmission, whenever having the dynamic buffering duration of packet to change, judge whether the time delay limits value of each packet is greater than the sleeping window duration summation that packet is stranded in dynamic buffering duration in the buffer memory of current period and current period before transmission successively according to time delay limits value order from small to large, if, the audit window that decision data wraps in next cycle transmits its stand-by period when arriving can not exceed its time delay limits value, otherwise, the audit window that decision data wraps in next cycle transmits its stand-by period when arriving can exceed its time delay limits value.
Wherein, the dynamic buffering duration that dynamic calculation packet is stranded in the buffer memory of current period is before transmission specially: under initial situation, the buffer memory duration of all packets in the buffer memory of current period is set to zero, whenever it is determined that the presence of to transmit when audit window at next cycle arrives its stand-by period can exceed the timeout datum bag of its time delay limits value time, the dynamic buffering duration dynamic conditioning of the remainder data bag except timeout datum bag is the transmission duration required when transmitting all timeout datum bags, to finally judge that the dynamic buffering duration of the packet transmitted at the audit window of next cycle increases a sleeping window duration.
Especially, when judge exist two or more next cycle audit window arrive time transmit its stand-by period can not exceed the non-timeout datum bag of its time delay limits value time, the dynamic buffering duration of all the other the non-timeout datum bags except first non-timeout datum bag is increased the length of a transmission duration required when transmitting all non-timeout datum bag being positioned at before self, whether the time delay limits value of all the other the non-timeout datum bags again judged successively except first non-timeout datum bag according to time delay limits value order is from small to large greater than dynamic buffering duration and sleeping window duration summation, if, again judge that the audit window that these all the other non-timeout datum wrap in next cycle transmits its stand-by period when arriving and can not exceed its time delay limits value, otherwise, again judge that the audit window that these all the other non-timeout datum wrap in next cycle transmits its stand-by period when arriving and can exceed its time delay limits value, and all the other non-timeout datum bags are placed on current period transmission by this, or, again judge that the audit window that all non-timeout datum wrap in next cycle has transmitted the stand-by period when arriving and can exceed its time delay limits value, and all non-timeout datum bags are placed on current period transmission.
Such as, in the period 1:
Suppose within the period 1, have three packets A, B, C (sorting from small to large according to time delay limit value), data length is respectively 5,3,2, time delay limits value is respectively D1=7, D2=12, D3=20, and the dynamic buffering duration be detained in the buffer is respectively B1, B2, B3; T s=8; The unit of above numerical value is frame,
Start to calculate at each listening period, the priority tag T of each packet i=D i-B i-T s:
When initial, B1=B2=B3=0; Therefore, T1=D1-B1-T s=7-0-8=-1 < 0;
T2＝D2-B2-T S＝12-0-8＝4；
T3＝D3-B3-T S＝20-0-8＝12；
Due to T1 < 0, represent that A must send at current period (period 1), now, because A sends at current period, therefore, the dynamic buffering duration of B and C will dynamically update as B2=0+5=5; B3=0+5=5;
Further, owing to there being the dynamic buffering duration of packet (B and C) to change, therefore, the priority tag of B and C is recalculated:
T2＝D2-B2-T S＝12-5-8＝-1＜0；
T3＝D3-B3-T S＝20-5-8＝7＞0；
Due to T2 < 0, represent that B must send at current period (period 1), now, because B sends at current period, therefore, the dynamic buffering duration of C will continue to dynamically update into B3=5+3=8;
Further, owing to there being the dynamic buffering duration of packet (C) to change, therefore, the priority tag recalculating C is continued:
T3=D3-B3-T s=20-8-8=4 > 0, represents that packet C can be deferred to next cycle (second round) and send, meanwhile, is continued to dynamically update as B3=8+T by the B3 of C s=8+8=16.
Finally, the audit window duration T of period 1 lfor: 5 (data length of A)+3 (data length of B)=8;
Be more than the computational process of period 1.
Second round:
Suppose in second round, have two packets D, E (sorting from small to large according to time delay limit value), add the packet C that the period 1 stays, one has three packets, the time delay limits value of D and E is D4=12, D5=16, data length is respectively 8 and 2, and the dynamic buffering duration be detained in the buffer is respectively B4 and B5.
When initial, B4=B5=0, B3=16, calculate the priority tag of each packet:
T3＝D3-B3-T S＝20-16-8＝-4＜0；
T4＝D4-B4-T S＝12-0-8＝4；
T5＝D5-B5-T S＝16-0-8＝8；
Due to T3 < 0, mark C must send within second round, and now, because C sent in the cycle two, therefore, the dynamic buffering duration of D and E will dynamically update as B4=0+2=2; B5=0+2=2;
Further, owing to there being the dynamic buffering duration of packet (D and E) to change, therefore, the priority tag of D and E is recalculated:
T4＝D4-B4-T S＝12-2-8＝2；
T5＝D5-B5-T S＝16-2-8＝6；
T4 and T5 > 0, represents that packet D and E can be deferred to next cycle (period 3) and send, and meanwhile, is continued dynamically to adjust by the B4 of D to be updated to B4=2+T s=2+8=10; The B5 of E is continued dynamically to adjust be updated to B5=2+T s=2+8=10.
Finally, the audit window duration T of second round is tentatively determined lfor: 2 (data lengths of C).
But, next cycle (period 3) can be deferred to owing to there being two packets and send, send if D and E is deferred to the period 3, and the audit window duration of second round be 2, there will be following situation:
Within the 3rd cycle, first dispatch D, then the dynamic buffering duration of E will be updated to:
B5=2 (audit window duration)+8 (T s)+8 (D data packet length)=18, exceeded the time delay limits value 16 of E, therefore, when have send in plural packet delay to next cycle time, to adjust as follows at current period:
T4＝D4-B4-T S＝12-2-8＝2；
T5=D5-B5-T s-8 (data length of D)=16-2-8-8 < 0; (if having the 3rd packet F, then the data length of the data length and E that will deduct D judges)
Particularly preferred, if packet D and E delayed delivery, E can be caused to violate time delay restriction, and therefore, in order to guaranteed qos, D and E sends within second round, finally, and the audit window length T of period 3 lfor: 2 (data length of C)+8 (data length of D)+2 (data length of E)=12.
Or only sent within second round by E, meanwhile, it is 2+2+T that the B4 of D is continued dynamic conditioning s=2+2+8=12; Finally, the audit window length T of period 3 lfor: 2 (data length of C)+2 (data length of E)=4.
Transmit after its stand-by period will exceed the data to be transmitted bag of its time delay limits value when picking out all audit windows at next cycle in the manner described above and arriving, calculate these data to be transmitted and wrap in the second transmission duration required when current period transmits, audit window duration agreement specified is adjusted to the second transmission duration.
Such as, suppose that current period was the n-th cycle, the next cycle of current period was then the (n+1)th cycle, 5 data to be transmitted bags (packet A, B, C, D and E) are had in the buffer memory in the n-th cycle, wherein, through judging, there are 3 data to be transmitted bags (packet A, B and C) to transmit its stand-by period when the audit window in the (n+1)th cycle arrives and will exceed its time delay limits value, calculate the second transmission duration required when these 3 data to be transmitted wrap in the n-th periodic transfer, and audit window duration agreement specify is adjusted to this second transmits duration.
Wherein, the computational methods of the second transmission duration see the computational methods of the first transmission duration in step 301, can repeat no more herein.
Step 304: transmit when all audit windows at next cycle arrive in described second transmission duration and transmit the data to be transmitted bag that its stand-by period will exceed its time delay limits value, and the buffer memory transmitting when all audit windows at next cycle being arrived that next cycle put into by data to be transmitted bag that its stand-by period can not exceed its time delay limits value.
After have adjusted audit window duration, transmit when all audit windows at next cycle arrive in the second transmission duration and transmit the data to be transmitted bag that its stand-by period will exceed its time delay limits value.Further, the buffer memory that next cycle put into by data to be transmitted bag that its stand-by period can not exceed its time delay limits value is transmitted when all audit windows at next cycle being arrived.
Still for the situation in step 303,5 data to be transmitted bags are had in the buffer memory in the n-th cycle, through judging, there is two other data to be transmitted bag (packet D and E) to transmit when the audit window in the (n+1)th cycle arrives the data to be transmitted bag that its stand-by period can not exceed its time delay limits value, these 2 data to be transmitted bags are put into the buffer memory in the (n+1)th cycle.
Refer to shown in Fig. 4, it is the transmitting and scheduling schematic diagram saved in the present invention in class II under sleep pattern, wherein, in the cycle 1, adds the duration of the audit window that agreement specifies, and in the cycle 2, decreases the duration of the audit window that agreement specifies.
It should be noted that, if exist in the buffer memory of current period upper one-period stored in packet, then by upper one-period stored in packet to come in the buffer memory of current period before the packet that originally stores according to time delay limits value order from small to large, and by the packet that originally stores in the buffer memory of current period according to the order arrangement from small to large of time delay limits value, then judge that the packet in the buffer memory of current period transmits its stand-by period and whether can exceed its time delay limits value when the audit window of next cycle arrives according to the method described above one by one.
Technical solution of the present invention is not limited in the second transmission duration, the transmission sequence between each data to be transmitted bag, that is, can transmit each data to be transmitted bag according to arbitrary order.But, consider that each data to be transmitted bag stand-by period is before transmission subject to the constraint of time delay limits value, in order to ensure QoS when each data to be transmitted wraps in transmission, as a kind of preferred version, transmit in described second transmission duration and to transmit the data to be transmitted bag that its stand-by period will exceed its time delay limits value when all audit windows at next cycle arrive and can be specially: in described second duration, transmit successively when all audit windows at next cycle arrive according to time delay limits value order from small to large and transmit the data to be transmitted bag that its stand-by period will exceed its time delay limits value.
Such as, through determining, when the audit window of next cycle arrives, transmission will exceed the data to be transmitted bag of its time delay limits value is packet A, B and C, its time delay limits value is respectively D1, D2 and D3, suppose that the magnitude relationship of time delay limits value is D1 > D3 > D2, then, in the second duration, first transmit packet B, transmit packet C again, finally transmit packet A.
Further consider if there is the packet that upper one-period or upper several cycle be detained in data to be transmitted bag, and these packets stand-by period before transmission also can be subject to the constraint of the dynamic buffering duration of this packet in the buffer memory of current period, therefore, as another kind of preferred version, transmit in described second transmission duration and to transmit the data to be transmitted bag that its stand-by period will exceed its time delay limits value when all audit windows at next cycle arrive and also can be specially:
Dynamic calculation packet is stranded in the dynamic buffering duration in the buffer memory of current period before transmission, and the difference order be from small to large stranded in before transmission according to the time delay limits value of each packet and packet between the dynamic buffering duration in the buffer memory of current period is transmitted successively when all audit windows at next cycle arrive and transmitted the data to be transmitted bag that its stand-by period will exceed its time delay limits value.
Certainly, as another kind of preferred version, directly according to the packet judged in the buffer memory of current period transmit when the audit window arrival of next cycle its stand-by period whether can exceed its time delay limits value time, the difference size that the time delay limits value of each packet and packet are stranded between dynamic buffering duration in the buffer memory of current period and the sleeping window duration summation of current period is before transmission transmitted successively, then transmit in described second transmission duration and to transmit the data to be transmitted bag that its stand-by period will exceed its time delay limits value when all audit windows at next cycle arrive and can also be specially:
Dynamic calculation packet is stranded in the dynamic buffering duration in the buffer memory of current period before transmission, transmits successively when all audit windows at next cycle arrive transmit the data to be transmitted bag that its stand-by period will exceed its time delay limits value according to the time delay limits value of each packet and the packet difference order be from small to large stranded in before transmission between dynamic buffering duration in the buffer memory of current period and the sleeping window duration summation of current period.
Wherein, the buffer memory duration that dynamic calculation packet is stranded in the buffer memory of current period is before transmission specially: under initial situation, the buffer memory duration of all packets in the buffer memory of current period is set to zero, whenever it is determined that the presence of to transmit when audit window at next cycle arrives its stand-by period can exceed the timeout datum bag of its time delay limits value time, the dynamic buffering duration dynamic conditioning of the remainder data bag except timeout datum bag is the transmission duration required when transmitting all timeout datum bags, to finally judge that the dynamic buffering duration of the packet transmitted at the audit window of next cycle increases a sleeping window duration.
Again such as, through determining, transmitting the data to be transmitted bag that its stand-by period will exceed its time delay limits value when the audit window of next cycle arrives is packet A, B and C, its time delay limits value is D1, D2 and D3, suppose that the magnitude relationship of time delay limits value is D1 > D3 > D2, if according to the relation of time delay limits value, first can transmit packet B, transmit packet C again, finally transmit packet A.The tentation data bag A dynamic buffering duration be stranded in the buffer memory of current period is B1+T s, the packet B dynamic buffering duration be stranded in the buffer memory of current period is B2+T s, the dynamic buffering duration that packet C is stranded in the buffer memory of current period is B3, and the sleeping window duration of current period is T s, then packet A is stranded in the sleeping window duration summation of dynamic buffering duration in the buffer memory of current period and current period and is: B1+T s+ T s, the sleeping window duration that packet B is stranded in dynamic buffering duration in the buffer memory of current period and current period is: B2+T s+ T s, the sleeping window duration that packet C is stranded in dynamic buffering duration in the buffer memory of current period and current period is: B3+T s.Therefore, for packet A, time delay limits value and the difference between dynamic buffering duration and sleeping window duration summation are T1=D1-B1-2T s, for packet B, time delay limits value and the difference between dynamic buffering duration and sleeping window duration summation are T2=D2-B2-2T s, for packet C, time delay limits value and the difference between dynamic buffering duration and sleeping window duration summation are T3=D3-B3-T s, suppose T3 > T2 > T1, therefore, when the size according to above-mentioned difference is transmitted, first can transmit packet A, then transmit packet B, finally transmit packet C.
A kind of special circumstances are: if described first transmission duration is greater than the audit window duration that agreement specifies, and the audit window that in the buffer memory of current period, all data to be transmitted wrap in next cycle transmits its stand-by period when arriving all can not exceed its time delay limits value, the audit window that agreement specifies can be adjusted to zero; Data to be transmitted bags all in the buffer memory of current period are put into the buffer memory of next cycle.
As can be seen from the above-described embodiment, in order to reduce the switching between sleep pattern and mode of operation, the size of dynamic conditioning audit window is carried out according to the data volume in mobile terminal buffer memory, thus the signaling consumption reduced between terminal and base station, the power consumption of effective reduction communication system, meanwhile, also avoid occurring loss of data.
Further, for all packets in mobile terminal buffer memory, it not the scheduling simply first sent out first according to time delay value, but consider qos parameter and time delay restriction, again packet is ranked, send in order according to Queue sequence, thus reduce business time delay, improve terminal real-time, sleep pattern and dispatching method are combined, improve mobile terminal low-power consumption efficiency.
Embodiment two
The difference of the present embodiment and embodiment one is, also further contemplates the situation that the first transmission duration is less than or equal to the audit window duration that agreement specifies.Refer to Fig. 5, it is the flow chart of the transmission dispatching method under the another kind of sleep pattern of the embodiment of the present invention two announcement, comprises the following steps:
Step 301: when being in the listening state under sleep pattern, calculates when the first transmission duration required during all data to be transmitted bags in the buffer memory transmitting current period;
Step 302: judge whether described first transmission duration is greater than the audit window duration that agreement specifies;
Step 303: if described first transmission duration is greater than the audit window duration that agreement specifies, calculate and to transmit its stand-by period the second transmission duration required when will exceed the data to be transmitted bag of its time delay limits value when all audit windows at next cycle arrives in the buffer memory of transmission current period, audit window duration agreement specified is adjusted to described second and transmits duration;
Step 304: transmit when all audit windows at next cycle arrive in described second transmission duration and transmit the data to be transmitted bag that its stand-by period will exceed its limits value, and the buffer memory transmitting when all audit windows at next cycle being arrived that next cycle put into by data to be transmitted bag that its stand-by period can not exceed its time delay limits value;
The implementation of above-mentioned steps 301-304 see embodiment one, will be able to repeat no more in this enforcement two.
Step 305: if described first transmission duration is less than or equal to the audit window duration that agreement specifies, audit window duration agreement specified is adjusted to described first transmission duration;
Step 306: transmit all data to be transmitted bags in the buffer memory of current period in described first transmission duration.
Technical solution of the present invention is not limited in the first transmission duration, the transmission sequence between each data to be transmitted bag, that is, can transmit each data to be transmitted bag according to arbitrary order.But, consider that each data to be transmitted bag stand-by period is before transmission subject to the constraint of time delay limits value, in order to ensure QoS when each data to be transmitted wraps in transmission, as a kind of preferred version, in described first transmission duration, transmit all data to be transmitted bags in the buffer memory of current period can be specially:
In described first transmission duration, transmit all data to be transmitted bags in the buffer memory of current period successively according to time delay limits value order from small to large.
Further consider if there is the packet that upper one-period or upper several cycle be detained in data to be transmitted bag, and these packets stand-by period before transmission also can be subject to the constraint of the dynamic buffering duration of this packet in the buffer memory of current period, therefore, as another kind of preferred version, in described first transmission duration, transmit all data to be transmitted bags in the buffer memory of current period also can be specially:
Dynamic calculation packet is stranded in the dynamic buffering duration in the buffer memory of current period before transmission, transmits all data to be transmitted bags in the buffer memory of current period successively according to the difference order from small to large between the time delay limits value of each packet and the dynamic buffering duration of packet.
Certainly, as another kind of preferred version, directly according to the packet judged in the buffer memory of current period transmit when the audit window arrival of next cycle its stand-by period whether can exceed its time delay limits value time, the difference size that the time delay limits value of each packet and packet are stranded between dynamic buffering duration in the buffer memory of current period and the sleeping window duration summation of current period is before transmission transmitted successively, then in described first transmission duration, transmitting all data to be transmitted bags in the buffer memory of current period can also be specially:
Dynamic calculation packet is stranded in the dynamic buffering duration in the buffer memory of current period before transmission, and the difference order be from small to large stranded in before transmission between dynamic buffering duration in the buffer memory of current period and the sleeping window duration summation of current period according to the time delay limits value of each packet and packet transmits all data to be transmitted bags in the buffer memory of current period successively.
Wherein, the buffer memory duration that dynamic calculation packet is stranded in the buffer memory of current period is before transmission specially: under initial situation, the buffer memory duration of all packets in the buffer memory of current period is set to zero, whenever it is determined that the presence of to transmit when audit window at next cycle arrives its stand-by period can exceed the timeout datum bag of its time delay limits value time, the dynamic buffering duration dynamic conditioning of the remainder data bag except timeout datum bag is the transmission duration required when transmitting all timeout datum bags, to finally judge that the dynamic buffering duration of the packet transmitted at the audit window of next cycle increases a sleeping window duration.
As can be seen from the above-described embodiment, in order to reduce the switching between sleep pattern and mode of operation, the size of dynamic conditioning audit window is carried out according to the data volume in mobile terminal buffer memory, thus the signaling consumption reduced between terminal and base station, the power consumption of effective reduction communication system, meanwhile, also avoid occurring loss of data.
Further, for all packets in mobile terminal buffer memory, it not the scheduling simply first sent out first according to time delay value, but consider qos parameter and time delay restriction, again packet is ranked, send in order according to Queue sequence, thus reduce business time delay, improve terminal real-time, sleep pattern and dispatching method are combined, improve mobile terminal low-power consumption efficiency.
Embodiment three
Refer to Fig. 6, it is the method flow diagram of a kind of mobile terminal transmission data that embodiment three discloses, and comprises the steps:
Step 601: under mobile terminal is in normal mode of operation;
Step 602: mobile terminal judges that the data buffer storage under normal mode of operation remains empty time t fwhether reach threshold value T threshold, if so, enter step 603, otherwise, return step 601;
Step 603: mobile terminal sends request the request message entering sleep pattern to base station;
Step 604:: mobile terminal wait receive base station send enter the acknowledge message of sleep pattern after, enter sleep pattern;
Wherein, base station sends to the initial parameter at least carrying IEEE 802.16e standard definition in the acknowledge message of mobile terminal: the duration T of sleeping window s, audit window duration T lwith the initial frame number etc. of sleeping window.
Step 605: mobile terminal judges whether the data buffer storage Ft under sleep pattern is empty, and if so, mobile terminal is in the sleep state under sleep pattern, if not, enters step 606:
Step 606: mobile terminal is in the listening state under sleep pattern, mobile terminal calculates as the first transmission duration L1 required during all data to be transmitted bags in the buffer memory transmitting current period;
Step 607: mobile terminal judges the audit window duration T whether described first transmission duration L1 is greater than agreement and specifies l, if so, enter step 608, otherwise, enter step 610;
Step 608: mobile terminal calculates and to transmit its stand-by period when all audit windows at next cycle arrives in the buffer memory of transmission current period and required second transmit duration L2, audit window duration T agreement specified when will exceed the data to be transmitted bag of its time delay limits value lbe adjusted to described second transmission duration L2;
Step 609 mobile terminal transmits when all audit windows at next cycle arrive and transmits the data to be transmitted bag that its stand-by period will exceed its time delay limits value in described second transmission duration L2, and when all audit windows at next cycle being arrived, transmit the buffer memory that next cycle put into by data to be transmitted bag that its stand-by period can not exceed its time delay limits value, enter step 612:
Step 610: the audit window duration T that agreement specifies by mobile terminal lbe adjusted to described first transmission duration L1;
Step 611: mobile terminal transmits all data to be transmitted bags in the buffer memory of current period in described first transmission duration L1;
Step 612: mobile terminal enters the sleep state under sleep pattern, returns step 605 after being awake.
As can be seen from the above-described embodiment, in order to reduce the switching between sleep pattern and mode of operation, the size of dynamic conditioning audit window is carried out according to the data volume in mobile terminal buffer memory, thus the signaling consumption reduced between terminal and base station, the power consumption of effective reduction communication system, meanwhile, also avoid occurring loss of data.
Further, for all packets in mobile terminal buffer memory, it not the scheduling simply first sent out first according to time delay value, but consider qos parameter and time delay restriction, again packet is ranked, send in order according to Queue sequence, thus reduce business time delay, improve terminal real-time, sleep pattern and dispatching method are combined, improve mobile terminal low-power consumption efficiency.
Embodiment four
Corresponding with the transmission dispatching method under above-mentioned a kind of sleep pattern, the embodiment of the present invention additionally provides the transmitting and scheduling device under a kind of sleep pattern.Refer to Fig. 7, it is the structure chart of the transmitting and scheduling device under a kind of sleep pattern of the embodiment of the present invention four announcement, and this device comprises computing unit 701, judging unit 702, first adjustment unit 703 and the first transmitting and scheduling unit 704.Operation principle below in conjunction with this device introduces its internal structure and annexation further.
Computing unit 701, for when being in the listening state under sleep pattern, calculates when the first transmission duration required during all data to be transmitted bags in the buffer memory transmitting current period;
Judging unit 702, for judging whether described first transmission duration is greater than the audit window duration that agreement specifies;
First adjustment unit 703, if be greater than for described first transmission duration the audit window duration that agreement specifies, calculate and to transmit its stand-by period the second transmission duration required when will exceed the data to be transmitted bag of its time delay limits value when all audit windows at next cycle arrives in the buffer memory of transmission current period, audit window duration agreement specified is adjusted to described second and transmits duration;
First transmitting and scheduling unit 704, transmit for transmitting when all audit windows at next cycle arrive in described second transmission duration the data to be transmitted bag that its stand-by period will exceed its time delay limits value, and when being arrived by all audit windows at next cycle, transmit the buffer memory that next cycle put into by the data to be transmitted bag that can not exceed its time delay limits value.
Preferred on the one hand, the first adjustment unit 703 comprises further:
Buffer memory duration calculation subelement, is stranded in the dynamic buffering duration in the buffer memory of current period before transmission for dynamic calculation packet;
Time-out judgment sub-unit, for whenever having the dynamic buffering duration of packet to change, judge whether the time delay limits value of each packet is greater than the sleeping window duration summation that packet is stranded in dynamic buffering duration in the buffer memory of current period and current period before transmission successively according to time delay limits value order from small to large;
Time-out result determination subelement, if the judged result for overtime judgment sub-unit is yes, the audit window that decision data wraps in next cycle transmits its stand-by period when arriving can not exceed its time delay limits value, otherwise, transmit its stand-by period when the audit window that decision data wraps in next cycle arrives and can exceed its time delay limits value;
Second transmission duration calculation subelement, transmits for calculating according to result of determination when all audit windows at next cycle arrive the second transmission duration that its stand-by period can exceed the packet of its time delay limits value.
Preferred on the other hand, the first transmitting and scheduling unit 704 comprises further:
Buffer memory duration calculation subelement, is stranded in the dynamic buffering duration in the buffer memory of current period before transmission for dynamic calculation packet;
First ranking transmissions subelement, for calculating when in described second duration, the difference order be from small to large stranded in before transmission according to the time delay limits value of each packet and packet between the dynamic buffering duration in the buffer memory of current period is transmitted successively when all audit windows at next cycle arrive and is transmitted the data to be transmitted bag that its stand-by period will exceed its time delay limits value.
Or the first transmitting and scheduling unit 704 comprises further:
Buffer memory duration calculation subelement, is stranded in the dynamic buffering duration in the buffer memory of current period before transmission for dynamic calculation packet;
Second ranking transmissions subelement, for in described second transmission duration, transmit successively when all audit windows at next cycle arrive according to the time delay limits value of each packet and the packet difference order be from small to large stranded in before transmission between dynamic buffering duration in the buffer memory of current period and the sleeping window duration summation of current period and transmit the data to be transmitted bag that its stand-by period will exceed its time delay limits value.
Except the structure shown in Fig. 7, preferably, refer to Fig. 8, it is the structure chart of the transmitting and scheduling device under the another kind of sleep pattern of the embodiment of the present invention four announcement, this device comprises further: the 3rd adjustment unit 705, if be less than or equal to for described first transmission duration the audit window duration that agreement specify, audit window duration agreement specified is adjusted to described first and transmits duration; 3rd transmitting and scheduling unit 706, for transmitting all data to be transmitted bags in the buffer memory of current period in described first transmission duration.
Wherein, preferably, the 3rd transmitting and scheduling unit 706 comprises further:
Buffer memory duration calculation subelement, is stranded in the dynamic buffering duration in the buffer memory of current period before transmission for dynamic calculation packet;
3rd ranking transmissions subelement, in described first transmission duration, transmits all data to be transmitted bags in the buffer memory of current period successively according to the difference order from small to large between the time delay limits value of each packet and the dynamic buffering duration of packet.
Or the 3rd transmitting and scheduling unit 706 comprises further:
Buffer memory duration calculation subelement, is stranded in the dynamic buffering duration in the buffer memory of current period before transmission for dynamic calculation packet;
4th ranking transmissions subelement, for in described first transmission duration, the difference order be from small to large stranded in before transmission between dynamic buffering duration in the buffer memory of current period and the sleeping window duration summation of current period according to the time delay limits value of each packet and packet transmits all data to be transmitted bags in the buffer memory of current period successively.
Above-mentioned buffer memory duration calculation subelement comprises:
Initial calculation subelement, under initial situation, the buffer memory duration of all packets in the buffer memory of current period is set to zero;
Dynamic conditioning subelement, for whenever it is determined that the presence of to transmit when audit window at next cycle arrives its stand-by period can exceed the timeout datum bag of its time delay limits value time, the dynamic buffering duration dynamic conditioning of the remainder data bag except timeout datum bag is the transmission duration required when transmitting all timeout datum bags, will finally judge that the dynamic buffering duration of the packet transmitted at the audit window of next cycle increases a sleeping window duration.
Especially, described device also comprises further: the second adjustment unit, if be greater than for described first transmission duration the audit window duration that agreement specifies, and the audit window that in the buffer memory of current period, all data to be transmitted wrap in next cycle transmits its stand-by period when arriving all can not exceed its time delay limits value, audit window agreement specified is adjusted to zero; Second transmitting and scheduling unit, for putting into the buffer memory of next cycle by data to be transmitted bags all in the buffer memory of current period.
As can be seen from the above-described embodiment, in order to reduce the switching between sleep pattern and mode of operation, the size of dynamic conditioning audit window is carried out according to the data volume in mobile terminal buffer memory, thus the signaling consumption reduced between terminal and base station, the power consumption of effective reduction communication system, meanwhile, also avoid occurring loss of data.
Further, for all packets in mobile terminal buffer memory, it not the scheduling simply first sent out first according to time delay value, but consider qos parameter and time delay restriction, again packet is ranked, send in order according to Queue sequence, thus reduce business time delay, improve terminal real-time, sleep pattern and dispatching method are combined, improve mobile terminal low-power consumption efficiency.
It should be noted that, one of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random AccessMemory, RAM) etc.
Above the transmission dispatching method under a kind of sleep pattern provided by the present invention and device are described in detail, apply specific embodiment herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, 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 (18)

1. the transmission dispatching method under sleep pattern, is characterized in that, comprising:
When being in the listening state under sleep pattern, calculate when the first transmission duration required during all data to be transmitted bags in the buffer memory transmitting current period;
Judge whether described first transmission duration is greater than the audit window duration that agreement specifies;
If described first transmission duration is greater than the audit window duration that agreement specifies, calculate and to transmit its stand-by period the second transmission duration required when will exceed the data to be transmitted bag of its time delay limits value when all audit windows at next cycle arrives in the buffer memory of transmission current period, audit window duration agreement specified is adjusted to described second and transmits duration;
Transmit when all audit windows at next cycle arrive in described second transmission duration and transmit the data to be transmitted bag that its stand-by period will exceed its time delay limits value, and when all audit windows at next cycle being arrived, transmit the buffer memory that next cycle put into by data to be transmitted bag that its stand-by period can not exceed its time delay limits value.
2. method according to claim 1, is characterized in that, described method also comprises:
If described first transmission duration is greater than the audit window duration that agreement specifies, and the audit window that in the buffer memory of current period, all data to be transmitted wrap in next cycle transmits its stand-by period when arriving all can not exceed its time delay limits value, audit window agreement specified is adjusted to zero;
Data to be transmitted bags all in the buffer memory of current period are put into the buffer memory of next cycle.
3. method according to claim 1, is characterized in that, described method also comprises:
If described first transmission duration is less than or equal to the audit window duration that agreement specifies, audit window duration agreement specified is adjusted to described first transmission duration;
All data to be transmitted bags in the buffer memory of current period are transmitted in described first transmission duration.
4. method according to claim 1, it is characterized in that, described calculating transmit when in the buffer memory transmitting current period, all audit windows at next cycle arrives its stand-by period when will exceed the data to be transmitted bag of its time delay limits value the second required transmission duration comprise:
Dynamic calculation packet is stranded in the dynamic buffering duration in the buffer memory of current period before transmission;
Whenever having the dynamic buffering duration of packet to change, judge whether the time delay limits value of each packet is greater than the sleeping window duration summation that packet is stranded in dynamic buffering duration in the buffer memory of current period and current period before transmission successively according to time delay limits value order from small to large;
If so, transmit its stand-by period when the audit window that decision data wraps in next cycle arrives and can not exceed its time delay limits value, otherwise transmitting its stand-by period when the audit window that decision data wraps in next cycle arrives can exceed its time delay limits value;
Calculate when all audit windows at next cycle arrive according to result of determination and transmit the second transmission duration that its stand-by period can exceed the packet of its time delay limits value.
5. method according to claim 1, is characterized in that, described transmission in described second transmission duration to be transmitted the data to be transmitted handbag that its stand-by period will exceed its time delay limits value and drawn together when all audit windows at next cycle arrive:
Dynamic calculation packet is stranded in the dynamic buffering duration in the buffer memory of current period before transmission;
In described second transmission duration, the difference order be from small to large stranded in before transmission according to the time delay limits value of each packet and packet between the dynamic buffering duration in the buffer memory of current period is transmitted successively when all audit windows at next cycle arrive and is transmitted the data to be transmitted bag that its stand-by period will exceed its time delay limits value.
6. method according to claim 1, is characterized in that, described transmission in described second transmission duration to be transmitted the data to be transmitted handbag that its stand-by period will exceed its time delay limits value and drawn together when all audit windows at next cycle arrive:
Dynamic calculation packet is stranded in the dynamic buffering duration in the buffer memory of current period before transmission;
In described second transmission duration, transmit successively when all audit windows at next cycle arrive according to the time delay limits value of each packet and the packet difference order be from small to large stranded in before transmission between dynamic buffering duration in the buffer memory of current period and the sleeping window duration summation of current period and transmit the data to be transmitted bag that its stand-by period will exceed its time delay limits value.
7. method according to claim 3, is characterized in that, describedly transmits all data to be transmitted handbags in the buffer memory of current period and draws together in described first transmission duration:
Dynamic calculation packet is stranded in the dynamic buffering duration in the buffer memory of current period before transmission;
In described first transmission duration, transmit all data to be transmitted bags in the buffer memory of current period successively according to the difference order from small to large between the time delay limits value of each packet and the dynamic buffering duration of packet.
8. method according to claim 3, is characterized in that, describedly transmits all data to be transmitted handbags in the buffer memory of current period and draws together in described first transmission duration:
Dynamic calculation packet is stranded in the dynamic buffering duration in the buffer memory of current period before transmission;
In described first transmission duration, the difference order be from small to large stranded in before transmission between dynamic buffering duration in the buffer memory of current period and the sleeping window duration summation of current period according to the time delay limits value of each packet and packet transmits all data to be transmitted bags in the buffer memory of current period successively.
9. according to the method in claim 4-8 described in any one, it is characterized in that, the dynamic buffering duration that described dynamic calculation packet is stranded in the buffer memory of current period before transmission specifically comprises:
Under initial situation, the buffer memory duration of all packets in the buffer memory of current period is set to zero;
Whenever it is determined that the presence of to transmit when audit window at next cycle arrives its stand-by period can exceed the timeout datum bag of its time delay limits value time, the dynamic buffering duration dynamic conditioning of the remainder data bag except timeout datum bag is the transmission duration required when transmitting all timeout datum bags, will finally judge that the dynamic buffering duration of the packet transmitted at the audit window of next cycle increases a sleeping window duration.
10. the transmitting and scheduling device under sleep pattern, is characterized in that, comprising:
Computing unit, for when being in the listening state under sleep pattern, calculates when the first transmission duration required during all data to be transmitted bags in the buffer memory transmitting current period;
Judging unit, for judging whether described first transmission duration is greater than the audit window duration that agreement specifies;
First adjustment unit, if be greater than for described first transmission duration the audit window duration that agreement specifies, calculate and to transmit its stand-by period the second transmission duration required when will exceed the data to be transmitted bag of its time delay limits value when all audit windows at next cycle arrives in the buffer memory of transmission current period, audit window duration agreement specified is adjusted to described second and transmits duration;
First transmitting and scheduling unit, transmit for transmitting when all audit windows at next cycle arrive in described second transmission duration the data to be transmitted bag that its stand-by period will exceed its time delay limits value, and when all audit windows at next cycle being arrived, transmit the buffer memory that next cycle put into by data to be transmitted bag that its stand-by period can not exceed its time delay limits value.
11. devices according to claim 10, is characterized in that, described device also comprises:
Second adjustment unit, if be greater than for described first transmission duration the audit window duration that agreement specifies, and the audit window that in the buffer memory of current period, all data to be transmitted wrap in next cycle transmits its stand-by period when arriving all can not exceed its time delay limits value, audit window agreement specified is adjusted to zero;
Second transmitting and scheduling unit, for putting into the buffer memory of next cycle by data to be transmitted bags all in the buffer memory of current period.
12. devices according to claim 10, is characterized in that, described device also comprises:
3rd adjustment unit, if be less than or equal to for described first transmission duration the audit window duration that agreement specify, audit window duration agreement specified is adjusted to described first and transmits duration;
3rd transmitting and scheduling unit, for transmitting all data to be transmitted bags in the buffer memory of current period in described first transmission duration.
13. devices according to claim 10, is characterized in that, described first adjustment unit comprises:
Buffer memory duration calculation subelement, is stranded in the dynamic buffering duration in the buffer memory of current period before transmission for dynamic calculation packet;
Time-out judgment sub-unit, for whenever having the dynamic buffering duration of packet to change, judge whether the time delay limits value of each packet is greater than the sleeping window duration summation that packet is stranded in dynamic buffering duration in the buffer memory of current period and current period before transmission successively according to time delay limits value order from small to large;
Time-out result determination subelement, if the judged result for overtime judgment sub-unit is yes, the audit window that decision data wraps in next cycle transmits its stand-by period when arriving can not exceed its time delay limits value, otherwise, transmit its stand-by period when the audit window that decision data wraps in next cycle arrives and can exceed its time delay limits value;
Second transmission duration calculation subelement, transmits for calculating according to result of determination when all audit windows at next cycle arrive the second transmission duration that its stand-by period can exceed the packet of its time delay limits value.
14. devices according to claim 10, is characterized in that, described first transmitting and scheduling unit comprises:
Buffer memory duration calculation subelement, is stranded in the dynamic buffering duration in the buffer memory of current period before transmission for dynamic calculation packet;
First ranking transmissions subelement, for calculating when in described second transmission duration, the difference order be from small to large stranded in before transmission according to the time delay limits value of each packet and packet between the dynamic buffering duration in the buffer memory of current period is transmitted successively when all audit windows at next cycle arrive and is transmitted the data to be transmitted bag that its stand-by period will exceed its time delay limits value.
15. devices according to claim 10, is characterized in that, described first transmitting and scheduling unit comprises:
Buffer memory duration calculation subelement, is stranded in the dynamic buffering duration in the buffer memory of current period before transmission for dynamic calculation packet;
Second ranking transmissions subelement, for in described second transmission duration, transmit successively when all audit windows at next cycle arrive according to the time delay limits value of each packet and the packet difference order be from small to large stranded in before transmission between dynamic buffering duration in the buffer memory of current period and the sleeping window duration summation of current period and transmit the data to be transmitted bag that its stand-by period will exceed its time delay limits value.
16. devices according to claim 12, is characterized in that, described 3rd transmitting and scheduling unit comprises:
Buffer memory duration calculation subelement, is stranded in the dynamic buffering duration in the buffer memory of current period before transmission for dynamic calculation packet;
3rd ranking transmissions subelement, in described first transmission duration, transmits all data to be transmitted bags in the buffer memory of current period successively according to the difference order from small to large between the time delay limits value of each packet and the dynamic buffering duration of packet.
17. devices according to claim 12, is characterized in that, described 3rd transmitting and scheduling unit comprises:
Buffer memory duration calculation subelement, is stranded in the dynamic buffering duration in the buffer memory of current period before transmission for dynamic calculation packet;
4th ranking transmissions subelement, for in described first transmission duration, the difference order be from small to large stranded in before transmission between dynamic buffering duration in the buffer memory of current period and the sleeping window duration summation of current period according to the time delay limits value of each packet and packet transmits all data to be transmitted bags in the buffer memory of current period successively.
18., according to the device in claim 13-17 described in any one, is characterized in that, described buffer memory duration calculation subelement comprises:
Initial calculation subelement, under initial situation, the buffer memory duration of all packets in the buffer memory of current period is set to zero;
Dynamic conditioning subelement, for whenever it is determined that the presence of to transmit when audit window at next cycle arrives its stand-by period can exceed the timeout datum bag of its time delay limits value time, the dynamic buffering duration dynamic conditioning of the remainder data bag except timeout datum bag is the transmission duration required when transmitting all timeout datum bags, will finally judge that the dynamic buffering duration of the packet transmitted at the audit window of next cycle increases a sleeping window duration.
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