CN104581866B - D2d cooperative communication using one kind of data such as the block transfer rate of data distribution method with energy saving effect - Google Patents

D2d cooperative communication using one kind of data such as the block transfer rate of data distribution method with energy saving effect Download PDF

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CN104581866B
CN104581866B CN 201510019271 CN201510019271A CN104581866B CN 104581866 B CN104581866 B CN 104581866B CN 201510019271 CN201510019271 CN 201510019271 CN 201510019271 A CN201510019271 A CN 201510019271A CN 104581866 B CN104581866 B CN 104581866B
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user
data
data block
step
transmission
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CN104581866A (en )
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吴远
陈佳超
何艳飞
钱丽萍
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浙江工业大学
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/20Techniques for reducing energy consumption in wireless communication networks independent of Radio Access Technologies
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/30Power-based selection of communication route or path
    • Y02D70/39Power-based selection of communication route or path using selective relaying for reaching a BTS [Base Transceiver Station] or an access point

Abstract

一种等数据块传输速率下利用D2D协作通信的带有节能效果的数据分发方法,包括以下步骤:(1)基于D2D协作通信,在等数据块传输速率下完成对数据块的分发,同时相较于每个用户都各自从基站下载数据块的方式达到节能的效果。 D2D cooperative communication using one kind of data such as the block transfer rate of data distribution method with energy-saving effect, comprising the steps of: (1) D2D based cooperative communication, complete distribution of the data block in the data block transfer rate and the like while being each representing a respective user to save energy from the download data blocks of a base station. 针对该问题,设计方法根据等数据块传输速率确定数据块的传输时间。 To solve this problem, the design method for determining the transmission time according to the data block a data block transfer rate and the like. (2)规定在数据分发过程中需要考虑的限制条件,针对限制条件设计在给定数据块传输时间和传输速率下的协作式数据分发方法,最终完成对数据块的发送。 Constraints (2) in a predetermined data distribution process to be considered for cooperative data distribution method in a data block transmission time and transmission rate of a given design constraints, the final completion of the transmission data block. 本发明提供一种资源利用效率较高、能耗较小的等数据块传输速率下利用D2D协作通信的带有节能效果的数据分发方法。 The present invention provides a high resource utilization efficiency, less energy consumption and other data distribution method with energy saving effect using the D2D cooperative communication data block transfer rates.

Description

一种等数据块传输速率下利用D2D协作通信的带有节能效果的数据分发方法 D2D cooperative communication using one kind of data such as the block transfer rate of data distribution method with energy saving effect

技术领域 FIELD

[0001] 本发明涉及D2D通信领域中,尤其是一种等数据块传输速率下利用D2D协作通信的带有节能效果的数据分发方法。 [0001] The present invention relates to the field of D2D communication, in particular with the data distribution method of the energy saving effect using the D2D cooperative communication block one kind of transmission rate and the like.

背景技术 Background technique

[0002] 随着移动端设备的快速普及,人们对网络数据信息的需求也越来越大,正是在这样的背景下,有限的通信资源也面临着越来越大的压力,由此当用户终端之间足够近时基于D2D通信的通信模式有着越来越广阔的发展背景,尤其在提高资源利用率方面更加值得期待。 [0002] With the rapid spread of mobile terminal devices, the demand for network data is also growing, it is in this context, limited communication resources also facing increasing pressure, whereby when D2D communication mode based on enough communication has become increasingly broad context of development in recent time between user terminals, especially the more to look forward to in terms of improving resource utilization. 利用D2D协作通信的方式实现对人们有共同需求数据块的分发,是一种十分有效并且高效的通信模式,这种模式更加符合当前所面临的通信资源紧缺困境的解决需求。 D2D communication using the collaborative way to achieve the common needs of the people there to distribute data blocks, is a very effective and efficient communication model that is more in line with the scarcity of resources to address the needs of communication difficulties currently facing. 但是如何基于这种通信模式设计一套行之有效的解决方案,是我们需要解决的问题。 But how to design an effective solution based on this mode of communication, we need to address the problem. 因此,本发明研究如何实现在等数据块传输速率下利用D2D协作通信实现对用户需求数据块的分发,并相较于用户各自从基站下载所需数据块的方式达到节能效果,是十分有意义的。 Thus, to study how the present invention is implemented in the block transfer rate of data such as coordinated communication using the D2D user needs to achieve the distribution data block, and compared to each user from the base station to download desired data block way to save energy, is very significant of.

发明内容 SUMMARY

[0003] 为了克服传统通信模式缺乏对资源的高效利用以及能耗较大的不足,本发明提供一种资源利用效率较高、能耗较小的等数据块传输速率下利用D2D协作通信的带有节能效果的数据分发方法。 [0003] In order to overcome the lack of communication modes lack of large efficient use of resources and energy, the present invention provides the use of band D2D cooperative communication in a resource use high efficiency, small energy consumption and other data block transmission rate data distribution method of the energy saving effect.

[0004] 本发明解决其技术问题所采用的技术方案是: [0004] aspect of the present invention to solve the technical problem are:

[0005] —种等数据块传输速率下利用D2D协作通信的带有节能效果的数据分发方法,所述数据分发方法包括以下步骤: [0005] - using the D2D cooperative communication block transfer rate and other types of data distribution method with energy saving effect, the data distribution method comprising the steps of:

[0006] (1)在系统内有. [0006] (1) within the system.

Figure CN104581866BD00051

个用户,N为总用户数, Users, N being the total number of users,

Figure CN104581866BD00052

·个数据块,K为总数据块个数,其中,数据块k的需求用户群为: · Data blocks, K is the total number of data blocks, wherein the data block k as users demand:

Figure CN104581866BD00053

,数据块k的传输时间为xk,数据块k的大小为Lk,用户i所需要的数据块集合为山。 , The transmission time of the data blocks of k data block of Lk is set, the user is required i xk, k data block size of the mountain. 基于D2D的协作通信方式下,基站需要在单个时间片T内完成对K个数据块的发送,而被选为中继的用户在, D2D-based collaborative communication mode, the base station transmits K complete blocks of data within a single time slot T, and the user is selected as the relay,

Figure CN104581866BD00054

时间内接收来自基站数据块k的同时立即广播给与该中继用户处于同一用户群Qk的其他用户,最后,若数据块的传输时间Xk在经过所有可选用户中继之后仍有剩余,即 Receiving from the base station while the time k block of data broadcast is immediately given to the relay user to other users in the same user group Qk, and finally, if the transmission time of the data block still remaining Xk After all optional user relay, i.e.,

Figure CN104581866BD00055

,则 ,then

Figure CN104581866BD00056

的传输时间由基站直接对需求用户广播发送数据完成,针对该问题,所述数据块传输时间xk具体由以下步骤获得: Transmission time of the broadcast transmission data performed by the base station direct the user demand for this problem, the data block obtained from a specific transmission time xk steps:

[0007] 步骤1.1:基站在单个时间片T内对K个数据块的传输速率Rk都相等,因此,对于数据块k的传输速率Rk有: [0007] Step 1.1: the base station are equal to the K transmission rate Rk data blocks within a single time slice list T, for a transmission rate of data block k Rk are:

Figure CN104581866BD00057

> 其中,k表示数据块集合 > Where, k represents a set of data blocks

Figure CN104581866BD00058

中的第k个数据块,Rk表示数据块k的传输速率,Lk表示数据块k的大小,T表示单个时间片长度; The k data blocks, Rk denotes the transmission rate of data block k, Lk k represents the size of the data block, T is a single chip length;

[0008] 步骤1.2:对于数据块k,根据步骤I . 1所获得的传输速率R1S其传输时间Xk有, [0008] Step 1.2: for a data block k, a transmission rate according to step I obtained a transmission time Xk has R1S,

Figure CN104581866BD00061

. 其中,Xk表示数据块k的传输时间; Wherein, Xk denotes the transmission time of the data block k;

[0009] (2)根据⑴所述的方法,针对所述被选为中继的用户在 [0009] (2) The method according ⑴, was chosen for the relayed user

Figure CN104581866BD00062

时间中接收来自基站数据块k的同时立即广播给与该中继用户处于同一用户群他用户的过程,考虑基于D2D 协作通信实现该过程的限制条件,所述限制条件包括以下内容: Receiving from the base station while the time k block of data broadcast immediately give the relay user in the same user group his user process, based on considerations D2D achieve collaborative communication restrictions of the process, the constraints include the following:

[0010] 用户i作为数据块k的中继用户时间 [0010] User i as a relay user data time block k

Figure CN104581866BD00063

不能超过数据块k的传输时间Xk,即: Xk not exceed the transmission time of the data block k, namely:

Figure CN104581866BD00064

[0012] 用户i在完成对数据块k的中继转发和接收所需数据过程中的能量不能超过其可用能量 [0012] Upon completion of the user i relay data block k receives energy and data forwarding process required not exceed the available energy

Figure CN104581866BD00065

,其中用户i为其所需要的数据块k进行转发所需功率为 , Where i user forwards the data block to the required power it needs k

Figure CN104581866BD00066

对应能耗为 The corresponding energy consumption

Figure CN104581866BD00067

;用户i为接收数据块k所需接收功率为 ; User k i is the received data block is the desired received power

Figure CN104581866BD00068

,对应能耗为 The corresponding energy consumption

Figure CN104581866BD00069

,因此即: Therefore namely:

[0013] [0013]

Figure CN104581866BD000610

[0014] 用户i在作为数据块k的中继用户时发送功率不能超过其最大发送功率 [0014] When the user i as a relay user data block k in transmission power can not exceed the maximum transmission power

Figure CN104581866BD000611

,否则用户i不能被选作中继,BP: Otherwise, the user i can not be selected as a relay, BP:

Figure CN104581866BD000612

[0016] 其中,函数. [0016] where the function.

Figure CN104581866BD000613

[0017] 在上述限制条件中,各参数定义如下: [0017] In the above limitations, the parameters are defined as follows:

[0018] i:用户i; [0018] i: User I;

[0019] q1:用户i正在发送数据块时的电路功耗; [0019] q1: Sending User i circuit power consumption data block;

[0020] Rk:数据块k的传输速率; [0020] Rk: k is a transmission rate of data blocks;

[0021] Xk:数据块k的传输时间; [0021] Xk: k transmission time of a data block;

[0022] η:信道背景噪声; [0022] η: a channel background noise;

[0023] g小用户i与用户j之间的信道增益; [0023] g small channel gain between user i and user J;

[0024] [0024]

Figure CN104581866BD000614

::用户i接收数据块k过程中的接收功率; :: i receives the received power of the user data in the process of block k;

[0025] [0025]

Figure CN104581866BD000615

:用户i被选为中继后对于数据块k的发送时间; : Time after transmission of user i is selected as the data block k of the relay;

[0026] [0026]

Figure CN104581866BD000616

::用户i最大可用能量; :: maximum available power of user i;

[0027] [0027]

Figure CN104581866BD000617

:用户i最大发送功率; : Maximum transmission power of user i;

[0028] Ω k:对于数据块k有需求的用户集合; [0028] Ω k: k for a data block with a set of user requirements;

[0029] U1:用户i需求的数据块集合; [0029] U1: the data block needs a set of user i;

[0030] 根据所述限制条件,在⑴中所述方法给定数据块传输时间下,选择用户作为中继对属于集合Ω1^]其他用户进行数据块k的分发,步骤包括: [0030] According to the restriction, in the method ⑴ given transmission time of the data block, the user selected as the relay belonging to the set ^] Other users Ω1 k of data blocks for distribution, comprising the step of:

[0031] 步骤2.1:在考虑数据块传输速率以及包括基站到用户、用户到用户在内信道环境因素下,定义变量」 [0031] Step 2.1: In consideration of the transfer rate and data block comprising a base station to a user, user-to-user channel environment factors including, define the variable "

Figure CN104581866BD00071

_,计算对于所有数据块k对应属于集合所有用户下的: _, K is calculated for all data blocks corresponding to all users belonging to the set:

Figure CN104581866BD00072

[0032] 步骤2.2:将步骤2.1中计算的所有 [0032] Step 2.2: 2.1 is calculated in Step all

Figure CN104581866BD00073

从小到大进行排序,具体如下: From small to large sort, as follows:

Figure CN104581866BD00074

[0034] 其中, [0034] wherein,

Figure CN104581866BD00075

,,表示 ,, represents

Figure CN104581866BD00076

从小到大排列第 In ascending order of

Figure CN104581866BD00077

个,其中,Θ表示 , Of which, Θ ​​represents

Figure CN104581866BD00078

I的个数; The number of I;

[0035] 步骤2.3:令 [0035] Step 2.3: Order

Figure CN104581866BD00079

,其中,tRk表示完成数据块k完成传输的剩余传输时间,ER1表示用户i的剩余可用能量; Wherein, TRK indicating completion of data block k completion of the remaining transmission time, the remaining available energy of the ER1 represents user i;

[0036] 步骤2.4:若θ = 〇,则 [0036] Step 2.4: If θ = square, then

Figure CN104581866BD000710

I,即数据块k由基站直接进行广播;否则令1 = 1,其中, 1表不当如 I, i.e., the data block k direct broadcast by a base station; otherwise letting a = 1, wherein, in Table 1 as improper

Figure CN104581866BD000711

序号; Serial number;

[0037] 步骤2.5:当1 [0037] Step 2.5: 1 when

Figure CN104581866BD000712

Θ时,跳至步骤2.6;否则跳至步骤2.8; When Θ, skip to step 2.6; otherwise, skip to step 2.8;

[0038] 步骤2.6:对于步骤2.5得到的 [0038] Step 2.6: 2.5 obtained for step

Figure CN104581866BD000713

,根据 ,according to

Figure CN104581866BD000714

Figure CN104581866BD000715

中的i,k得到对应的ERi和tRk,判断若ERi = 0,tRk = 0,则跳至步骤2.7,否则令 Of i, k and obtain a corresponding ERi TRK, determines if ERi = 0, tRk = 0, skip to step 2.7, otherwise letting

Figure CN104581866BD000716

[0041] 步骤2.7:令1 = 1+1,跳至步骤2.5; [0041] Step 2.7: Let 1 = 1 + 1, go to step 2.5;

[0042] 步骤2.8:对于数据块k,若仍有 [0042] Step 2.8: for a data block k, if there is still

Figure CN104581866BD000717

的传输时间剩余,则剩余传输时间由基站直接进行广播; The remaining transmission time, the remaining time for the broadcast transmission by the base station directly;

[0043] 步骤2.9:输出:用户i对数据块k的传输时间 [0043] Step 2.9: Output: data transmission time to the user block k i

Figure CN104581866BD000718

[0044] 本发明的技术构思为:首先,基于D2D协作通信,在等数据块传输速率下完成对数据块的分发,同时相较于每个用户都各自从基站下载数据块的方式达到节能的效果。 [0044] The technical idea of ​​the present invention are: First, the D2D cooperative communication based on the distribution of the data block is completed in the other data blocks for transmission rates compared to each user to save energy from each of download data blocks of a base station effect. 针对该问题,设计方法根据等数据块传输速率确定数据块的传输时间。 To solve this problem, the design method for determining the transmission time according to the data block a data block transfer rate and the like. 其次,规定在数据分发过程中需要考虑的限制条件,针对限制条件设计在给定数据块传输时间和传输速率下的协作式数据分发方法。 Secondly, the limits specified in the data distribution process considerations, cooperative data distribution method in a given block of data transfer time and transfer rate for the design constraints. 即实现在D2D协作通信下通过数据块传输时间控制和对应的用户中继选择及中继时间控制实现的数据分发,同时相较于用户各自从基站下载数据块方式达到节能的效果。 That is achieved at a data distribution implemented by the communication control D2D cooperative relaying user selection data block transfer time and the corresponding control and the relay time and compared to the user to save energy each download data block from the base station mode.

[0045] 本发明的有益效果主要表现在:1、对于基站而言,通过利用D2D通信的优势,实现对传统网络资源的复用,能够很好地降低基站的通信负载;2、对于用户而言,通过以基于D2D的用户间协作的通信方式,在获得数据资源的同时也达到节省流量资费的效益;3、对于整个系统而言,以合理的用户协作方式,有效达到控制整个数据块分发过程的能耗目的,实现数据资源的高效利用。 [0045] Advantageous effects of the present invention are mainly: 1, in terms of the base station, by taking advantage of D2D communication, to realize multiplexing of legacy network resources, and could reduce the communication load of the base station; 2, for users made, by way of a communication-based inter D2D user collaboration, while obtaining data resource saving benefits reached flow rates; and 3, for the entire system, a reasonable user collaboration, to achieve effective control of the entire block of data distribution energy consumption of the process object, to achieve efficient use of data resources.

附图说明 BRIEF DESCRIPTION

[0046] 图1是基于D2D协作通信的数据分发系统示意图。 [0046] FIG. 1 is a schematic diagram based on data distribution system D2D cooperative communication.

具体实施方式 detailed description

[0047] 下面结合附图对本发明作进一步详细描述。 [0047] The following figures of the present invention will be further described in detail with.

[0048] 参照图1,一种等数据块传输速率下利用D2D协作通信的带有节能效果的数据分发方法,实行该方法能在满足各用户对数据块的需求下,基于D2D协作通信完成数据块的分发,同时相较于每个用户都各自从基站下载数据块的方式达到节能的效果。 D2D cooperative communication using the [0048] Referring to FIG. 1 A block transfer rate of data such as data distribution method with energy saving effect, the implementation of the method can, based on cooperative communication completion data D2D meet the needs of users in the next block distribution block, while each user compared to a respective way to save energy from the base station to download data blocks. 本发明基于D2D 协作通信的数据分发系统(如图1所示)。 D2D data distribution system of the present invention is based on cooperative communication (as shown in Figure 1). 在基于D2D协作通信的数据分发系统中,通过D2D方式进行协作通信,有效提高了资源的利用率,降低了基站的负载。 D2D data distribution system based on cooperative communication in cooperative communication by way D2D, effectively improve the utilization of resources, reduces the load on the base station. 针对基于D2D协作通信的数据分发系统,提出以通过数据块传输时间控制和选择用户作为数据分发中继及其作为中继时间的方式,完成对所需求用户的数据块分发,并带有节能效果,其特征在于:所述数据分发方法包括以下步骤: D2D based data distribution system for cooperative communication, made in the data block transfer time data as the user control and selection as a relay and a relay distribution of time to complete the needs of the user data block distribution, the energy saving effect and with characterized in that: said data distribution method comprising the steps of:

[0049] (1)在系统内有.. [0049] (1) in the system ..

Figure CN104581866BD00081

个用户,N为总用户数, Users, N being the total number of users,

Figure CN104581866BD00082

个数据块,K为总数据块个数,其中,数据块k的需求用户群为 Data blocks, K is the total number of data blocks, wherein the data block k users to demand

Figure CN104581866BD00083

,数据块k的传输时间为xk,数据块k的大小为Lk,用户i所需要的数据块集合为仏。 , The transmission time of the data blocks of k data block of Lk is set, the user is required i xk, k data block size is Fo. 基于D2D的协作通信方式下,基站需要在单个时间片T内完成对K个数据块的发送,而被选为中继的用户在: D2D-based collaborative communication mode, the base station transmits K complete blocks of data within a single time slot T, and the user is selected as a relay in:

Figure CN104581866BD00084

时间内接收来自基站数据块k的同时立即广播给与该中继用户处于同一用户群Qk的其他用户,最后,若数据块的传输时间xk在经过所有可选用户中继之后仍有剩余,即 Receiving from the base station while the time k block of data broadcast is immediately given to the relay user to other users in the same user group Qk, and finally, if the transmission time of the data block still remaining xk After all optional user relay, i.e.,

Figure CN104581866BD00085

,则 ,then

Figure CN104581866BD00086

的传输时间由基站直接对需求用户广播发送数据完成,针对该问题,所述数据块传输时间xk具体由以下步骤获得: Transmission time of the broadcast transmission data performed by the base station direct the user demand for this problem, the data block obtained from a specific transmission time xk steps:

[0050] 步骤1.1:基站在单个时间片T内对K个数据块的传输速率Rk都相等,因此,对于数据块k的传输速率Rk有, [0050] Step 1.1: base station transmission rate Rk K data blocks are equal within a single time slice list T, for a transmission rate of data block k has Rk,

Figure CN104581866BD00087

,其中,k表示数据块集合 Wherein, k represents a set of data blocks

Figure CN104581866BD00088

中的第k个数据块,Rk表示数据块k的传输速率,Lk表示数据块k的大小,T表示单个时间片长度; The k data blocks, Rk denotes the transmission rate of data block k, Lk k represents the size of the data block, T is a single chip length;

[0051] 步骤1.2:对于数据块k,根据步骤I . 1所获得的传输速率R1S其传输时间Xk有, [0051] Step 1.2: for a data block k, a transmission rate according to step I obtained a transmission time Xk has R1S,

Figure CN104581866BD00089

. 其中,xk表示数据块k的传输时间; Where, xk denotes the transmission time of the data block k;

[0052] (2)根据⑴所述的方法,针对所述被选为中继的用户在 [0052] (2) The method according ⑴, was chosen for the relayed user

Figure CN104581866BD000810

时间中接收来自基站数据块k的同时立即广播给与该中继用户处于同一用户群 Receiving from the base station while the time k block of data broadcast immediately give the relay user in the same user group

Figure CN104581866BD000811

内他用户的过程,考虑基于D2D 协作通信实现该过程的限制条件,所述限制条件包括以下内容: User in his process, consider D2D achieve cooperative communication process based on the constraints, the constraints include the following:

[0053] 用户i作为数据块k的中继用户时间 [0053] User i as a relay user data time block k

Figure CN104581866BD00091

不能超过数据块k的传输时间Xk,即: Xk not exceed the transmission time of the data block k, namely:

[0054] [0054]

Figure CN104581866BD00092

[0055] 用户i在完成对数据块k的中继转发和接收所需数据过程中的能量不能超过其可用能量 [0055] Upon completion of the user i relay data block k receives energy and data forwarding process required not exceed the available energy

Figure CN104581866BD00093

其中用户i为其所需要的数据块k进行转发所需功率为 Wherein i is the user data block k you need to forward the power required to

Figure CN104581866BD00094

对应能耗为 The corresponding energy consumption

Figure CN104581866BD00095

;用户i为接收数据块k所需接收功率为 ; User k i is the received data block is the desired received power

Figure CN104581866BD00096

,对应能耗为 The corresponding energy consumption

Figure CN104581866BD00097

,因此即: Therefore namely:

[0056] [0056]

Figure CN104581866BD00098

[0057] 用户i在作为数据块k的中继用户时发送功率不能超过其最大发送功率 [0057] When the user i as a relay user data block k in transmission power can not exceed the maximum transmission power

Figure CN104581866BD00099

>否则用户i不能被选作中继,BP: > Otherwise, the user i can not be selected as a relay, BP:

Figure CN104581866BD000910

[0059] 其中,函数 [0059] where the function

Figure CN104581866BD000911

[0060] 在上述限制条件中,各参数定义如下: [0060] In the above limitations, the parameters are defined as follows:

[0061] i:用户i; [0061] i: User I;

[0062] qi:用户i正在发送数据块时的电路功耗; [0062] qi: Sending User i circuit power consumption data block;

[0063] Rk:数据块k的传输速率; [0063] Rk: k is a transmission rate of data blocks;

[0064] Xk:数据块k的传输时间; [0064] Xk: k transmission time of a data block;

[0065] η:信道背景噪声; [0065] η: a channel background noise;

[0066] gij:用户i与用户j之间的信道增益; [0066] gij: channel gain between user i and user J;

[0067] [0067]

Figure CN104581866BD000912

用户i接收数据块k过程中的接收功率; I receives the received power of the user data in the process of block k;

[0068] [0068]

Figure CN104581866BD000913

:用户i被选为中继后对于数据块k的发送时间; : Time after transmission of user i is selected as the data block k of the relay;

[0069] [0069]

Figure CN104581866BD000914

:用户i最大可用能量; : The maximum available power of user i;

[0070] [0070]

Figure CN104581866BD000915

:用户i最大发送功率; : Maximum transmission power of user i;

[0071] Ω k:对于数据块k有需求的用户集合; [0071] Ω k: k for a data block with a set of user requirements;

[0072] U1:用户i需求的数据块集合; [0072] U1: the data block needs a set of user i;

[0073] 根据所述限制条件,在⑴中所述方法给定数据块传输时间下,选择用户作为中继对属于集合Ω1^]其他用户进行数据块k的分发,步骤包括: [0073] According to the restriction, in the method ⑴ given transmission time of the data block, the user selected as the relay belonging to the set ^] Other users Ω1 k of data blocks for distribution, comprising the step of:

[0074] 步骤2.1:在考虑数据块传输速率以及包括基站到用户、用户到用户在内信道环境因素下,定义变量 [0074] Step 2.1: considering the transmission rate of data blocks and comprising a base station to a user, user-to-user channel environment factors including, the defined variables

Figure CN104581866BD000916

,计算对于所有数据块k对应属于集合所有用户下的 , K is calculated for all data blocks corresponding to all users belonging to the set

Figure CN104581866BD000917

[0075] 步骤2.2:将步骤2.1中计算的所有 [0075] Step 2.2: 2.1 is calculated in Step all

Figure CN104581866BD00101

从小到大进行排序,具体如下: From small to large sort, as follows:

Figure CN104581866BD00102

[0077] 其中: [0077] wherein:

Figure CN104581866BD00103

,表示 Expressed

Figure CN104581866BD00104

从小到大排列第 In ascending order of

Figure CN104581866BD00105

个,其中,Θ表示 , Of which, Θ ​​represents

Figure CN104581866BD00106

的个数; Number;

[0078] 步骤2.3:令 [0078] Step 2.3: Order

Figure CN104581866BD00107

,其中,七妒表不完成数据块k完成传输的剩余传输时间,ER1表示用户i的剩余可用能量; Wherein, jealous seven table does not complete the rest of the completion of the data block k in transmission time, the remaining available energy of the ER1 represents user i;

[0079] 步骤2.4:若θ = 〇,则: [0079] Step 2.4: If θ = square, then:

Figure CN104581866BD00108

^,即数据块k由基站直接进行广播;否则令1 = 1,其中, 1表不当如 ^, I.e., the data block k direct broadcast by a base station; otherwise letting a = 1, wherein, in Table 1 as improper

Figure CN104581866BD00109

I序号; No. I;

[0080] 步骤2.5:当1 [0080] Step 2.5: 1 when

Figure CN104581866BD001010

Θ时,跳至步骤2.6;否则跳至步骤2.8; When Θ, skip to step 2.6; otherwise, skip to step 2.8;

[0081] 步骤2.6:对于步骤2.5得到的 [0081] Step 2.6: 2.5 obtained for step

Figure CN104581866BD001011

,根据 ,according to

Figure CN104581866BD001012

Figure CN104581866BD001013

中的i,k得到对应的ERi和tRk,判断若ERi = 0,tRk = 0,则跳至步骤2.7,否则令 Of i, k and obtain a corresponding ERi TRK, determines if ERi = 0, tRk = 0, skip to step 2.7, otherwise letting

Figure CN104581866BD001014

[0084] 步骤2.7:令1 = 1+1,跳至步骤2.5; [0084] Step 2.7: Let 1 = 1 + 1, go to step 2.5;

[0085] 步骤2.8:对于数据块k,若仍有 [0085] Step 2.8: for a data block k, if there is still

Figure CN104581866BD001015

的传输时间剩余,则剩余传输时间由基站直接进行广播; The remaining transmission time, the remaining time for the broadcast transmission by the base station directly;

[0086] 步骤2.9:输出:用户i对数据块k的传输时间 [0086] Step 2.9: Output: data transmission time to the user block k i

Figure CN104581866BD001016

[0087] 本实施例着眼于社会热点问题,基于D2D协作通信模式的优势,通过数据块传输时间控制和对应的用户中继选择及中继时间控制的方式实现数据分发,最终相较于每个用户都各自从基站下载数据块的方式达到节能的效果。 [0087] The present embodiment focuses on hot social issues, based on cooperative advantages D2D communication mode, data distributed through the user selection and the relay transmission mode data block corresponding to the time-controlled and time-controlled relay, each compared to the final each user to save energy from the download data blocks of a base station. 我们的工作可以使整个数据分发系统在完成数据传输的同时更加节省能量,提高了数据资源的利用率,同时可以使网络运营商服务更多的用户,也使得用户达到获得数据资源的同时节省流量资费的效果。 Our work can make the entire data distribution system more energy savings while completing data transmission, improve the utilization of data resources, while allowing network operators to serve more users, but also allows users to achieve savings while obtaining data resource flow the effect of tariffs.

Claims (1)

  1. 1. 一种等数据块传输速率下利用D2D协作通信的带有节能效果的数据分发方法,其特征在于:所述数据分发方法包括以下步骤: ⑴在系统内有 With the data distribution method of the energy saving effect using the D2D cooperative communication, etc. A data block transmission rate, wherein: said data distribution method comprising the steps of: ⑴ in the system have
    Figure CN104581866BC00021
    个用户,N为总用户数,: Users, N being the total number of users:
    Figure CN104581866BC00022
    个数据块, K为总数据块个数,其中,数据块k的需求用户群为 Data blocks, K is the total number of data blocks, wherein the data block k users to demand
    Figure CN104581866BC00023
    ,数据块k的传输时间为 , The transmission time for the data block k
    Figure CN104581866BC00024
    ;,数据块k的大小为Lk,用户i所需要的数据块集合为仏,基于D2D的协作通信方式下,基站需要在单个时间片T内完成对K个数据块的发送,而被选为中继的用户在时间内接收来自基站数 ; Size of the data block is a data block of Lk k, a set of user i is required Fo, the D2D-based cooperative communication, the base station transmits K complete blocks of data within a single time slot T, and was chosen relay receiving user within a time from several base stations
    Figure CN104581866BC00025
    据块k的同时立即广播给与该中继用户处于同一用户群 K data block immediately administered simultaneously broadcasting the relay user in the same user group
    Figure CN104581866BC00026
    的其他用户,最后,若数据块的传输时间Xk在经过所有可选用户中继之后仍有剩余,即 Other users, and finally, if the transmission time of the data block still remaining Xk After all optional user relay, i.e.,
    Figure CN104581866BC00027
    ,则 ,then
    Figure CN104581866BC00028
    的传输时间由基站直接对需求用户广播发送数据完成,针对该问题,所述数据块传输时间xk具体由以下步骤获得: 步骤1.1:基站在单个时间片T内对K个数据块的传输速率Rk都相等,因此,对于数据块k 的传输速率Rk有, Transmission time of the broadcast transmission data performed by the base station direct the user demand for this problem, the data block obtained from a specific transmission time xk following steps: Step 1.1: base stations within a single time slice transmission rate T K data blocks Rk are equal, therefore, the data transfer rate for block k has Rk,
    Figure CN104581866BC00029
    ,其中,k表示数据块集合 Wherein, k represents a set of data blocks
    Figure CN104581866BC000210
    中的第k个数据块,Rk表示数据块k的传输速率,Lk表示数据块k的大小,T表示单个时间片长度; 步骤1 .2:对于数据块k,根据步骤I . 1所获得的传输速率Rk,其传输时间Xk有, The k data blocks, Rk denotes the transmission rate of data block k, Lk represents the size of the data block k, T represents a single chip length; Step 1.2: for a data block k, 1 I obtained according to step a. transmission rate Rk, which have transmission time Xk,
    Figure CN104581866BC000211
    ,其中,xk表示数据块k的传输时间; (2)根据⑴所述的方法,针对所述被选为中继的用户在 Wherein, XK k denotes the transmission time of a data block; (2) The method according ⑴, was chosen for the relayed user
    Figure CN104581866BC000212
    时间中接收来自基站数据块k的同时立即广播给与该中继用户处于同一用户群他用户的过程,考虑基于D2D协作通信实现该过程的限制条件,所述限制条件包括以下内容: 用户i作为数据块k的中继用户时间 Receiving from the base station while the time k block of data broadcast immediately give the relay user in the same user group his user process, based on considerations D2D achieve collaborative communication restrictions of the process, the constraints include the following: a user i relaying user data time block k
    Figure CN104581866BC000213
    不能超过数据块k的传输时间Xk,即: Xk not exceed the transmission time of the data block k, namely:
    Figure CN104581866BC000214
    用户i在完成对数据块k的中继转发和接收所需数据过程中的能量不能超过其可用能量 Upon completion of user i relay data block k data forwarding and receiving the energy required in the process can not exceed its available energy
    Figure CN104581866BC000215
    .其中用户i为其所需要的数据块k进行转发所需功率为 Where i is the user data block k you need to forward the power required to
    Figure CN104581866BC000216
    对应能耗为 The corresponding energy consumption
    Figure CN104581866BC000217
    ;用户i为接收数据块k所需接收功率为 ; User k i is the received data block is the desired received power
    Figure CN104581866BC000218
    ,对应能耗为 The corresponding energy consumption
    Figure CN104581866BC000219
    ,因此即: Therefore namely:
    Figure CN104581866BC000220
    用户i在作为数据块k的中继用户时发送功率不能超过其最大发送功率, When a user i transmitting user data block k as a relay in which power can not exceed the maximum transmission power,
    Figure CN104581866BC000221
    ,否则用户i不能被选作中继,BP: Otherwise, the user i can not be selected as a relay, BP:
    Figure CN104581866BC00031
    其中,函数 Where the function
    Figure CN104581866BC00032
    在上述限制条件中,各参数定义如下: i:用户i; Φ:用户i正在发送数据块时的电路功耗; Rk:数据块k的传输速率; xk:数据块k的传输时间; η:信道背景噪声; glJ:用户i与用户j之间的信道增益; In the above limitations, the parameters are defined as follows: i: user i; Φ: Sending User i circuit power consumption data block; Rk: k is a transmission rate of data blocks; xk: k transmission time of a data block; η: channel background noise; glJ: channel gain between user i and user J;
    Figure CN104581866BC00033
    :用户i接收数据块k过程中的接收功率; : Received power of the received user data block i k process;
    Figure CN104581866BC00034
    :用户i被选为中继后对于数据块k的发送时间; : Time after transmission of user i is selected as the data block k of the relay;
    Figure CN104581866BC00035
    用户i最大可用能量; Maximum available power of user i;
    Figure CN104581866BC00036
    :用户i最大发送功率; Ω15:对于数据块k有需求的用户集合; U1:用户i需求的数据块集合; 根据所述限制条件,在(1)中所述方法给定数据块传输时间下,选择用户作为中继对属于集合Ω1^]其他用户进行数据块k的分发,步骤包括: 步骤2.1:在考虑数据块传输速率以及包括基站到用户、用户到用户在内信道环境因素下,定义变量 : Maximum transmission power of user i; Ω15: for the data block k with a set of user requirements; Ul: data block needs a set of user i; according to the constraints in (1) the method given in the block transfer time select the user as a relay to belong to the set Ω1 ^] for distribution to other users k of data blocks, comprising the step of: step 2.1: in consideration of the transfer rate and data block comprising a base station to a user, user-to-user channel including environmental factors, defined variable
    Figure CN104581866BC00037
    ,计算对于所有数据块k对应属于集合所有用户下的 , K is calculated for all data blocks corresponding to all users belonging to the set
    Figure CN104581866BC00038
    步骤2.2:将步骤2.1中计算的所有 Step 2.2: 2.1 is calculated in Step all
    Figure CN104581866BC00039
    从小到大进行排序,具体如下: From small to large sort, as follows:
    Figure CN104581866BC000310
    其中, among them,
    Figure CN104581866BC000311
    ,表示 Expressed
    Figure CN104581866BC000312
    从小到大排列第 In ascending order of
    Figure CN104581866BC000313
    个,其中,Θ表示 , Of which, Θ ​​represents
    Figure CN104581866BC000314
    的个数; 步骤2.3:令 Number; Step 2.3: Order
    Figure CN104581866BC000315
    ,其中,tRk表示完成数据块k完成传输的剩余传输时间,ERi表示用户i的剩余可用能量; 步骤2.4:若Θ = 〇,则 Wherein, TRK indicating completion of data block k completion of the remaining transmission time, the remaining available energy represents ERi user i; Step 2.4: If Θ = square, then
    Figure CN104581866BC000316
    ,.即数据块k由基站直接进行广播;否则令I = 1,其中,1表示当前 ., I.e., the data block k direct broadcast by a base station; otherwise letting I = 1, where 1 represents the current
    Figure CN104581866BC000317
    序号; 步骤2.5:当 No.; Step 2.5: when
    Figure CN104581866BC000318
    时,跳至步骤2.6;否则跳至步骤2.8; 步骤2 · 6:对于步骤2 · 5得到的 When, go to step 2.6; otherwise, go to step 2.8; 2.6 Step 2: 2.5 to 2 obtained in Step
    Figure CN104581866BC00041
    ,根据 ,according to
    Figure CN104581866BC00042
    中的i,k得到对应的ERi和tRk,判断若ERi = O,tRk=O,则跳至步骤2.7,否则令 Of i, k and obtain a corresponding ERi TRK, determines if ERi = O, tRk = O, skip to step 2.7, otherwise letting
    Figure CN104581866BC00043
    步骤2.7:令1 = 1+1,跳至步骤2.5; 步骤2.8:对于数据块k,若仍有 Step 2.7: Let 1 = 1 + 1, go to step 2.5; Step 2.8: for a data block k, if there is still
    Figure CN104581866BC00044
    的传输时间剩余,则剩余传输时间由基站直接进行广播; 步骤2.9:输出:用户i对数据块k的传输时间· The remaining transmission time, the remaining time for the broadcast transmission by the base station directly; Step 2.9: Output: data transmission time to the user i in block k ·
    Figure CN104581866BC00045
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