CN105144811A - Method and apparatus for resource allocation for device-to-device communication - Google Patents
Method and apparatus for resource allocation for device-to-device communication Download PDFInfo
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- 238000001228 spectrum Methods 0.000 claims abstract description 91
- 230000006870 function Effects 0.000 claims abstract description 64
- 238000004590 computer program Methods 0.000 claims abstract description 7
- 230000011664 signaling Effects 0.000 claims description 10
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/38—TPC being performed in particular situations
- H04W52/383—TPC being performed in particular situations power control in peer-to-peer links
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
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- H04W92/18—Interfaces between hierarchically similar devices between terminal devices
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Abstract
The present invention relates to method and apparatus for resource allocation for device-to-device communication. According to an embodiment of the present invention, a method for resource allocation for device-to-device communication in a cellular system comprising a number C of cellular UE and a number D of D2D UE pairs, which are divided into ND2D packages, comprising : a) for cellular spectrum resources occupied by a cellular UE c, determining transmit power for a D2D package by maximizing a respective utility function, wherein the D2D package comprises one or more D2D UE pairs operable to share the cellular spectrum resources; b) repeatedly performing step a) for each of said number N of D2D packages against the cellular spectrum resources occupied by each of said number C of cellular UEs; c) calculating values of the utility functions based on the determined transmit power for all of said N D2D packages against the cellular spectrum resources occupied by each of said number C of cellular UEs; d) sorting the calculated values of the utility functions in descending order to determine cellular spectrum resource allocation for the plurality of D2D UE pairs. The embodiments of the present invention further relate to corresponding base station, user equipment and computer program product.
Description
Technical field
Present invention relates in general to wireless communication system, particularly relate to the method and apparatus of the Resourse Distribute that one communicates for device-to-device (D2D).
Background technology
Nowadays, high-speed data service increases fast for the demand of wireless bandwidth, and this has facilitated various technical development.Device-to-device (D2D) as a kind of local communication form has been suggested and as the basis of being intended to the cellular network improving spectrum efficiency and overall system speed.In D2D link, subscriber equipment (UE) is allowed through and directly connects and communicate mutually not by base station (BS).D2DUE shares identical subcarrier resources with traditional honeycomb UE, and its process of establishing is then controlled by network simultaneously.Because it may reuse the lifting of resource and power system capacity, D2D communication is considered to the key feature of next generation wireless network, and has attracted a large amount of attentiveness.
Although D2D communicates as power system capacity brings huge benefit, it also causes less desirable interference due to frequency spectrum share to main cellular user.In order to effectively utilize D2D technology, suitable Resourse Distribute must be applied to be improved systematic function by limiting interference.
Expect to provide a kind of Resourse Distribute solution improved to some extent for D2D communication.
Summary of the invention
In order to solve the problems of the prior art, aim to provide a kind of Resourse Distribute solution improved to some extent for D2D communication according to the embodiment of one or more method and apparatus of the present invention.
According to an aspect of the present invention, one embodiment of the present of invention provide a kind of method of the Resourse Distribute for the D2D communication in cellular system.This cellular system comprises the D2DUE pairing that cellular subscriber device (UE) that quantity is C and quantity are D, and quantity is that the D2DUE pairing of D is divided into N number of D2D package.The method comprises: cellular frequency spectrum resource a) occupied for honeycomb UEc, by making corresponding utility function U
c → nmaximize and determine D2D package D
ntransmitting power
wherein this D2D package comprises the one or more D2DUE pairings can carrying out operating to share this cellular frequency spectrum resource, and wherein this utility function represents at the cellular frequency spectrum Resourse Distribute occupied by honeycomb UEc to D2D package D
nwhen the costs factor that is associated with at least additional emission power consumption that this D2D communicates and the gain of channel global rate between difference; B) for described quantity be C honeycomb UE in the cellular frequency spectrum resource that occupies of each honeycomb UE, be that each the D2D package in the D2D package of N performs step a) repeatedly to described quantity; C) based on for described quantity be C honeycomb UE in the cellular frequency spectrum resource that occupies of each honeycomb UE and the transmitting power that all described N number of D2D packages are determined is calculated to the value of utility function; D) sort to determine cellular frequency spectrum Resourse Distribute for multiple D2DUE pairing with the described value of descending to the described utility function calculated.
According to a further aspect in the invention, one embodiment of the present of invention provide a kind of device of the Resourse Distribute communicated for the device-to-device (D2D) in cellular system.This cellular system comprises the D2DUE pairing that cellular subscriber device (UE) that quantity is C and quantity are D, and quantity is that the D2DUE pairing of D is divided into N number of D2D package.This device comprises: for occupy for honeycomb UEc cellular frequency spectrum resource, by making corresponding utility function U
c → nmaximize and determine D2D package D
ntransmitting power
device a), wherein this D2D package comprises the one or more D2DUE pairings can carried out operating to share this cellular frequency spectrum resource, and wherein this utility function represents at the cellular frequency spectrum Resourse Distribute occupied by honeycomb UEc to D2D package D
nwhen the costs factor that is associated with at least additional emission power consumption that this D2D communicates and the gain of channel global rate between difference; For command device a) for described quantity be C honeycomb UE in each honeycomb UE occupy cellular frequency spectrum resource, to described quantity be N D2D package in the device b that repeatedly performs of each D2D package); For based on for described quantity be C honeycomb UE in the cellular frequency spectrum resource that occupies of each honeycomb UE and the transmitting power that all described N number of D2D packages are determined is calculated to the device c of the value of utility function); Device d for sorting with the described value of descending to the described utility function calculated to determine cellular frequency spectrum Resourse Distribute for multiple D2DUE pairing).
According to a further aspect in the invention, one embodiment of the present of invention provide a kind of device of the Resourse Distribute communicated for the device-to-device (D2D) in cellular system.This cellular system comprises the D2DUE pairing that cellular subscriber device (UE) that quantity is C and quantity are D, and quantity is that the D2DUE pairing of D is divided into N number of D2D package.This device comprises: at least one processor and at least one comprise the memory of computer program code, this memory and computer program code are configured such that this device at least: cellular frequency spectrum resource a) occupied for honeycomb UEc, by making corresponding utility function U
c → nmaximize and determine D2D package D
ntransmitting power
wherein this D2D package comprises the one or more D2DUE pairings can carrying out operating to share this cellular frequency spectrum resource, and wherein this utility function represents at the cellular frequency spectrum Resourse Distribute occupied by honeycomb UEc to D2D package D
nwhen the costs factor that is associated with at least additional emission power consumption that this D2D communicates and the gain of channel global rate between difference; B) for described quantity be C honeycomb UE in the cellular frequency spectrum resource that occupies of each honeycomb UE, be that each the D2D package in the D2D package of N performs step a) repeatedly to described quantity; C) based on for described quantity be C honeycomb UE in the cellular frequency spectrum resource that occupies of each honeycomb UE and the transmitting power that all described N number of D2D packages are determined is calculated to the value of utility function; D) sort to determine cellular frequency spectrum Resourse Distribute for multiple D2DUE pairing with the described value of descending to the described utility function calculated.
Accompanying drawing explanation
The inventive features being considered to characteristic of the present invention provides in the following claims.But the present invention, its Implementation Modes, other target, feature and advantage are understood better by reading the following detailed description to exemplary embodiment by reference to accompanying drawing, wherein:
Fig. 1 schematically illustrates the example can implementing the cellular system of the embodiment according to the embodiment of the present invention wherein;
Fig. 2 schematically illustrates the flow chart for carrying out the method for Resourse Distribute to D2D communication according to the embodiment of the present invention;
Fig. 3 schematically illustrates the flow chart about the cellular frequency spectrum resource occupied by honeycomb UEc, all possible D2D pairing being estimated to the process of transmitting power according to an embodiment of the invention;
Fig. 4 schematically illustrates according to an embodiment of the invention for carrying out the flow chart of the process of cellular frequency spectrum Resourse Distribute to D2D communication;
Fig. 5 schematically illustrates the block diagram of the base station according to the embodiment of the present invention.
Embodiment
Subsequently, with reference to accompanying drawing, embodiments of the invention are described.In the following description, set forth many details thus understood the present invention more all sidedly.But, it will be apparent to one skilled in the art that embodiments of the present invention can not have these details.In addition, should be understood that, the present invention is not limited to as specific embodiment described here.In contrast, any combination of following characteristics and key element can be considered to implement and put into practice the present invention, and no matter whether they relate to different embodiments.Therefore, following aspect, feature, embodiment and advantage be only for illustration of object, and be not appreciated that key element or the restriction of claims, unless otherwise explicitly pointed out in the claims.
Embodiments of the invention relate to the technology of the D2D communication in cellular system being carried out to Resourse Distribute.In order to optimize the systematic function of the resource-sharing about both D2D and cellular communication modes, propose joint spectrum resource and transmit power allocations scheme based on making overall system speed maximize.
Fig. 1 schematically illustrates the example can implementing the cellular system of the embodiment according to the embodiment of the present invention wherein.
With reference to figure 1, the cellular subscriber device (UE) that cellular system 100 as shown is C by base station (BS) 110, quantity (exemplarily illustrate only UE in Fig. 1
c) and quantity be D D2DUE pairing (in Fig. 1, exemplarily illustrate only UE
d, 1and UE
d, 2one pairing d).As shown in Figure 2, such as UE
d, 1, UE
d, 2the D2DUE pairing of pairing d there is immediate data Signal transmissions, and such as UE
clegacy cellular UE then by data signal transmission to BS110.Each UE can be equipped with single omnidirectional antenna and be uniformly distributed in the cell.D2D two UE matched in d meet the distance restraint of D2D communication, and they also have communication requirement simultaneously.BS110 can be configured to the control centre of the radio resource for honeycomb and D2D both.
When without loss of generality, consider a kind of situation, the uplink resource of wherein cellular communication communicates with D2D and shares.Suppose UE
d, 1be and UE
cshare the D2D reflector of same cellular frequency spectrum resource, and UE
d, 2for receiving from UE
cthe D2D receiver of interference.Meanwhile, BS100 is exposed to from UE
d, 1interference.In systems in practice, the more than one D2D pairing reusing same subcarrier can bring the better performance of overall system speed aspect.Therefore, can suppose by honeycomb UE
coccupied any Resource Block can both be reallocated and match to multiple D2D.In this case, the interference between different D2D pairing cannot be left in the basket.For whole system, suppose that the total quantity of cellular orthogonal subchannel is C, and the quantity sending the D2D pairing of communication request is D.D is defined as the set of the D2D pairing of the shared same subcarrier that can be referred to as package.D pairing can be divided into N number of such package { D altogether
1, D
2..., D
n.In one embodiment, N number of D2D package can correspond to all nonvoid subsets that quantity is the D2DUE pairing of D, wherein N=2
d-1.Therefore, if honeycomb UE
c(c=1,2 ..., C) subcarrier that uses be assigned to n-th (n=1,2 ..., N) D2D package D
n, then BS place corresponding to the Signal Interference and Noise Ratio (SINR) of channel c is
And D2D pairing d (d ∈ D
n) the SINR at receiver place can pass through
And obtain, wherein P
c, P
dand P
d 'the transmitting power of expression phone user c, D2D reflector d, d respectively '.H
ij(i, j ∈ { c, B, d, d'}) is the channel response from equipment i to j.N
0be equivalent to the noise power at each receiver place.
For D2D basic system as shown in Figure 1, channel global rate relates to the traffic rate of honeycomb and D2D link.Therefore, the global rate of whole system can be expressed as:
According to embodiments of the invention, the global rate of this system is considered to central optimization problem.When the frequency spectrum resource of the subcarrier of such as honeycomb UE and so on is reused in D2D pairing, should be limited common-channel interference.Transmit the decay experienced and depend on that the degree of transmitting power and space length changes to some extent.Therefore, The embodiment provides the solution of joint spectrum resource and the power division communicated for D2D with optimization system performance.
With reference to figure 2-7, will be described in detail each embodiment of the present invention.
Fig. 2 schematically illustrates the flow chart for carrying out the method for Resourse Distribute to D2D communication according to the embodiment of the present invention.
In step S210, for the cellular frequency spectrum resource occupied by honeycomb UEc, by making corresponding utility function U
c → nmaximize and determine D2D package D
ntransmitting power
this utility function represent by the cellular frequency spectrum Resourse Distribute occupied by honeycomb UEc to D2D package D
nwhen the costs factor that is associated with at least additional emission power consumption that this D2D communicates and the gain of channel global rate between difference.
Based on equation 1) and 2), when the cellular frequency spectrum resource occupied by honeycomb UEc is assigned to D2D package D
ntime, global rate can be expressed as:
When the cellular frequency spectrum resource occupied by honeycomb UEc is not assigned to package, channel speed can be expressed as:
Therefore, in an embodiment of the present invention, for package D
nthe channel global rate gain of channel c be
This gain is considered to non-negative, this means that then they are exactly nugatory for this channel if this package brings the very large interference causing lower channel global rate.
The honeycomb channel obtaining rate gain needs to pay the cost caused due to the additional power consumption of D2D communication.Therefore, for the package D of the frequency spectrum resource occupied by honeycomb UEc
ncosts factor can be expressed as:
Wherein P
drepresent the transmitting power of D2DUE pairing d; λ represent can the unit price of transmitting power stated by BS.
Frequency spectrum resource occupied by honeycomb UEc is being distributed to D2D package D by this utility function
nwhen, can be expressed as:
Wherein ()
+expression computing max (, 0).
Based on equation (8), for certain given package D
n, the effectiveness of the cellular frequency spectrum resource occupied by honeycomb UEc depends on power { P
d(d ∈ D
n).This means, should by calculating the optimal transmit power making the D2DUE of its maximization of utility match
and the preferred channels global rate gain of the frequency spectrum resource occupied by honeycomb UEc is estimated for each package.Optimal transmit power
can be expressed as
Constraint function gives power bracket.Here,
fixing maximum power, and
the channel speed not ensureing D2DUE pairing d in noisy situation
lower limit.
According to embodiments of the invention, D2D package D
ntransmitting power
in an iterative manner about this D2D package D
nin included each D2DUE pairing determine.
If package D
nunpacked, then every bar D2D link for the contribution of honeycomb channel speed can be expressed as with the formula honeycomb UEc (c ∈ 1,2 ..., C}) occupied by frequency spectrum resource for D
nin D2DUE match the channel global rate gain of d, it can be expressed as
Wherein ()
+expression computing max (, 0).
And due to D
nin D2DUE match the utility function of the frequency spectrum resource occupied by honeycomb UEc that d causes and can be written as:
U
c→(d，n)(λ，{P
d′})＝U
c→(d，n)-λP
d11)
Subsequently, for D2D package D
nin each D2DUE match d, optimal transmit power
can be expressed as:
With reference to Fig. 3 to for estimating D about the cellular frequency spectrum resource occupied by honeycomb UEc
nin the exemplary process of transmitting power of likely D2D pairing be described in detail.
For the cellular frequency spectrum resource occupied by each in the quantity honeycomb UE that is C, be that each in the D2D package of N performs step S210 repeatedly to quantity.
In step S220, based on the cellular frequency spectrum resource occupied by each honeycomb UE in the honeycomb UE being C for described quantity to all N number of D2D package { D
1, D
2..., D
ndetermined transmitting power calculates the value of utility function.
According to embodiments of the invention, the value of this utility function can according to equation 8) calculate.
In step S230, sort to determine cellular frequency spectrum Resourse Distribute for multiple D2DUE pairing with the value of descending to calculated utility function.The exemplary process of step S230 is described in detail with reference to Fig. 4.
Fig. 3 schematically illustrates the flow chart about the cellular frequency spectrum resource occupied by honeycomb UEc, all possible D2D pairing being estimated to the process of transmitting power according to an embodiment of the invention.
In step S300, in the first circulation (t=0), for D2D package D
nin all D2DUE pairing, initial power P
i(0)-0, the initial value of utility function
the first unit price of transmitting power is λ.
In step S310, in circulation t (expression loop index), calculate D2D package D by following formula
nin included D2DUE match the transmitting power P of d
d(t):
Wherein d ' ≠ d, d ' ∈ D
n.
Repeatedly perform step S310, until be all updated the transmitting power that all D2DUE match at circulation t.
In step S320, calculate the value of utility function
In step S330, according to whether meeting
determine D2D package D
ntransmitting power
and the optimum unit price of this transmitting power
If
then loop index l-l+1 is set, λ-λ+Δ λ, and returns step S310.
If
then stop the process of estimation transmitting power, determine D2D package D
ntransmitting power
and arrange
Based on equation 11), the increase of the unit price λ of transmitting power finally causes the decline of utility function.For the scope of transmitting power, situation about increasing at unit price λ makes the maximized optimal value P of utility function
dthe Continual Improvement of utility function cannot be provided.That is, for package to the iterative processing that channel estimating is carried out in its channel global rate gain be convergence.
Exemplary iterative method is as shown in Figure 3 at " Efficientpowercontrolviapricinginwirelessdatanetworks " (IEEETrans.onCommun. of C.U.Saraydar, N.B.Mandayam and D.J.Goodman, vol.50, no.2, pp.291-303, in February, 2002) in discuss as tool priced non-cooperating power control activity, it is incorporated into this by reference of text.Apply and match determined transmitting power for the D2DUE in each package, the frequency spectrum resource occupied by honeycomb UE can obtain its preferred channels global rate gain for this package, and then provides the optimal strategy in overall Resourse Distribute.
Fig. 4 schematically illustrates according to an embodiment of the invention for carrying out the flow chart of the process of cellular frequency spectrum Resourse Distribute to D2D communication.
As shown in the exemplary process of Fig. 4, the step S230 of Fig. 2 can comprise the steps.
In step S410, in circulation τ (expression loop index), instruction can be collected by the cellular frequency spectrum Resourse Distribute occupied by honeycomb UEc to D2D package D
nsituation, the utility function with the maximum being greater than zero
In step S420, the cellular frequency spectrum resource occupied by honeycomb UEc is together with such as basis process determined D2D package D as shown in Figure 3
ntransmitting power
be assigned to D2D package D together
n.
In step S430, get rid of the cellular frequency spectrum resource occupied by honeycomb UEc and comprise and be also included in this D2D package D
nin the D2D package of any D2DUE pairing, to avoid further distribution.
Repeatedly perform step S410, S420 and S430, until it is that the D2DUE of D has been assigned with cellular frequency spectrum resource that the cellular frequency spectrum resource occupied by honeycomb UE that all quantity is C has all been assigned to this D2D package or all quantity.
According to embodiments of the invention, consider the costs factor that D2D communicates equally, also may there is the cost of control signal transmission and information feed back during access process.Usually, when channel obtains more D2D pairing, it must pay more signaling consumption.Therefore, this costs factor additional signaling overhead S that can communicate with D2D further
dbe associated, wherein d represents D2D package D
nin D2DUE pairing.In this embodiment of the invention, costs factor can be expressed as further:
By the cellular frequency spectrum Resourse Distribute occupied by honeycomb UEc to D2D package D
nwhen utility function can be expressed as
Wherein ()
+expression computing max (, 0).
Therefore, the value of this utility function can according to equation 15 in step S220) calculate.
According to embodiments of the invention, additional signaling overhead S
dcan by base station state and be used as iteration variable to determine the value of utility function.
In the embodiment that the present invention is such, as shown in Figure 4 may further include following steps for the process carrying out cellular frequency spectrum Resourse Distribute to D2D communication.
In step S440, to the additional signaling overhead S communicated for D2D
dcarry out the costs factor regulating to upgrade utility function.Such as, in the first circulation, i.e. τ=0, initial additional signaling overhead can be stated in base station
δ is worth with substep.
If the cellular frequency spectrum resource occupied by honeycomb UE that all quantity is C has all been assigned to D2D package, or all quantity be D D2DUE pairing be all assigned with cellular frequency spectrum resource, then terminate distribute; Otherwise arrange
τ=τ+1, and this process is back to step S220 with according to equation 15) value of this utility function is calculated based on the costs factor through upgrading of utility function.
Process according to the one or more embodiment of the present invention has been described in detail with reference to figure 2-4.It should be noted that above description is only exemplary and and be not intended to limit the invention.In other embodiments of the invention, the method can have more or less or different steps, and is only describe more concisely and more clear to make to the numbering that step is carried out, and not strictly limits the order between each step; The order of step can be different with description simultaneously.Such as, in certain embodiments, above one or more optional steps can be omitted.The specific embodiment of each step can be different with description.All these changes all fall within the spirit and scope of the present invention.
Fig. 5 schematically shows the simplified block diagram of the base station according to the embodiment of the present invention.
Base station 500 is suitable for communicating with subscriber equipment in support honeycomb with the cellular system of D2D both.As previously discussed, base station 500 can be configured to the control centre of the radio resource for honeycomb and D2D both.
Base station 500 comprises data processor (DP) 510, is coupled to/is embedded into the memory (MEM) 520 in DP510 and aerial array 550 is coupled to the suitable RF reflector TX/ receiver RX module 540 of DP510.RFTX/RX module 540 is for carrying out two-way wireless communication with at least one UE.MEM520 storage program (PROG) 530.
PROG530 is believed to comprise program command, and base station 500 can be made when program command is performed by DP510 to operate according to an exemplary embodiment of the present, as discussed herein operating process as shown in Figure 2, Figure 3 and Figure 4.
MEM520 can have and is anyly suitable for the type of local technical environment and any applicable data storage technology can be utilized to realize, as non-limiting example, these data storage technologies are such as the memory devices of based semiconductor, magnetic storage device and system, optical memory devices and system, read-only storage and removable memory.Although only, can there is several physically discrete memory cell in a MEM shown in base station 500 in base station 500.
DP510 performs as with reference to the required arbitrarily calculating described by figure 2, Fig. 3 and Fig. 4.DP510 can for any type being suitable for local technical environment, and it can comprise all-purpose computer, special-purpose computer, microprocessor, DSP and one or more based in the processor of polycaryon processor framework as non-limiting example.
According to embodiments of the invention, base station 500 comprises for for the cellular frequency spectrum resource occupied by honeycomb UEc, by making corresponding utility function U
c → nmaximize and determine D2D package D
ntransmitting power device a) (not shown in Fig. 5), wherein this D2D package comprises the one or more D2DUE pairings can carried out operating to share this cellular frequency spectrum resource.This utility function represent by the cellular frequency spectrum Resourse Distribute occupied by honeycomb UEc to D2D package D
nwhen the costs factor that is associated with at least additional emission power consumption that this D2D communicates and the gain of channel global rate between difference.
Base station 500 comprise further for command device a) for the cellular frequency spectrum resource occupied by each honeycomb UE in the described quantity honeycomb UE that is C and to described quantity be N D2D package in the device b that repeatedly performs of each D2D package) (not shown in Fig. 5).
Base station 500 comprises the device c for calculating the value of utility function to the determined transmitting power of all described N number of D2D packages based on the cellular frequency spectrum resource occupied by each honeycomb UE in the honeycomb UE being C for described quantity further) (not shown in Fig. 5).
Base station 500 comprises the device d for sorting with the value of descending to calculated utility function to determine cellular frequency spectrum Resourse Distribute for multiple D2DUE pairing further) (not shown in Fig. 5).
Can it is appreciated that this device a), device b), device c) and device d) function can be implemented by the one or more suitable module of base station 500 as described above.
Generally speaking, each exemplary embodiment can realize with hardware or special circuit, software, logic or its combination in any.Such as, some aspects can be implemented with hardware, and other side with firmware or can be implemented by the software performed by controller, microcontroller or other computing equipment, but the present invention is not limited to this.Although the various aspects of exemplary embodiment of the present invention can be illustrated and be described as block diagram and signaling diagram, also should understand these frames described herein, device, system, technology or method and can be implemented in as the hardware of non-limiting example, software, firmware, special circuit or logic, common hardware or controller or other computing equipment or its some combination.
Thus, should be appreciated that at least some aspect of exemplary embodiment of the present invention can realize with various assembly, such as integrated circuit (IC) chip and module.As is known in the art, the design of integrated circuit is supermatic process substantially.
The present invention can also implement with computer program, and this computer program comprises all features that can realize method as described herein and can be for implementing the method when being loaded in computer system.
Illustrate particularly with reference to preferred embodiment and describe the present invention.It should be appreciated by those skilled in the art, can various change be carried out to the present invention in form and details and not deviate from the spirit and scope of the present invention.
Claims (15)
1. the method for the Resourse Distribute communicated for the device-to-device (D2D) in cellular system, described cellular system comprises the D2DUE pairing that cellular subscriber device (UE) that quantity is C and quantity are D, described quantity is that the D2DUE pairing of D is divided into N number of D2D package, and described method comprises:
A) the cellular frequency spectrum resource occupied for honeycomb UEc, by making corresponding utility function U
c → nmaximize and determine D2D package
transmitting power
wherein said D2D package comprises the one or more D2DUE pairings can carrying out operating to share described cellular frequency spectrum resource, and wherein said utility function represents at the described cellular frequency spectrum Resourse Distribute occupied by described honeycomb UEc to described D2D package
when the costs factor that is associated with at least additional emission power consumption that described D2D communicates and the gain of channel global rate between difference;
B) for described quantity be C honeycomb UE in the described cellular frequency spectrum resource that occupies of each honeycomb UE, be that each the D2D package in the D2D package of N performs step a) repeatedly to described quantity;
C) based on for described quantity be C honeycomb UE in the described cellular frequency spectrum resource that occupies of each honeycomb UE and the described transmitting power that all described N number of D2D packages are determined, calculate the value of described utility function;
D) sort with the described value of descending to the described utility function calculated, to determine cellular frequency spectrum Resourse Distribute for described multiple D2DUE pairing.
2. method according to claim 1, wherein step a) in, iteratively about described D2D package
the each D2DUE pairing comprised determines described D2D package
described transmitting power
3. method according to claim 2, wherein step a) comprising:
E) in circulation t, described D2D package is calculated by following formula
the transmitting power P of the D2DUE pairing d comprised
d(t):
Wherein
, λ represents the unit price of the transmitting power stated by base station;
F) repeatedly step e is performed), until be all updated in the described transmitting power of described circulation t all D2DUE pairing;
G) described utility function is calculated
value
H) according to whether meeting
determine described D2D package
described transmitting power
and the optimum unit price of described transmitting power
4. method according to claim 1, wherein said costs factor is associated with the additional signaling overhead communicated for described D2D further.
5. the method according to any one of claim 1-4, wherein steps d) comprising:
I) collection indicates the cellular frequency spectrum Resourse Distribute occupied by described honeycomb UEc to described D2D package
situation, the described utility function with maximum
J) the cellular frequency spectrum resource occupied by described honeycomb UEc is together with the described D2D package determined
described transmitting power
distribute to described D2D package together
;
K) get rid of cellular frequency spectrum resource that described honeycomb UEc occupies and comprise and be also included in described D2D package
in the D2D package of any D2DUE pairing, to avoid further distribution;
L) repeatedly perform step I), j) and k), until it is that the D2DUE pairing of D has all been assigned with cellular frequency spectrum resource that the cellular frequency spectrum resource that the honeycomb UE that all described quantity is C occupies all has been assigned to described D2D package or all described quantity.
6. method according to claim 5, wherein steps d) comprise further:
Regulate the additional signaling overhead being used for described D2D communication, to upgrade the described costs factor of described utility function;
Return and perform step c), to calculate the value of described utility function based on the described costs factor through upgrading of described utility function.
7. the method according to any one of claim 1-6, wherein said N number of D2D package corresponds to all nonvoid subsets that described quantity is the D2DUE pairing of D, wherein N=2
d-1.
8. the device of the Resourse Distribute communicated for the device-to-device (D2D) in cellular system, described cellular system comprises the D2DUE pairing that cellular subscriber device (UE) that quantity is C and quantity are D, described quantity is that the D2DUE pairing of D is divided into N number of D2D package, and described device comprises:
For for the cellular frequency spectrum resource occupied by honeycomb UEc, by making corresponding utility function U
c → nmaximize and determine D2D package
transmitting power device a), wherein said D2D package comprises the one or more D2DUE pairings can carrying out operating to share described cellular frequency spectrum resource, and wherein said utility function represents at the cellular frequency spectrum Resourse Distribute occupied by described honeycomb UEc to described D2D package
when the costs factor that is associated with at least additional emission power consumption that described D2D communicates and the gain of channel global rate between difference;
For command device a) for by described quantity be C honeycomb UE in the cellular frequency spectrum resource that occupies of each honeycomb UE, and be the device b that each the D2D package in the D2D package of N performs repeatedly to described quantity);
For based on for by described quantity be C honeycomb UE in the described cellular frequency spectrum resource that occupies of each honeycomb UE and the described transmitting power that all described N number of D2D packages are determined, calculate the device c of the value of described utility function);
For sorting with the described value of descending to the described utility function calculated, to determine the device d of cellular frequency spectrum Resourse Distribute for described multiple D2DUE pairing).
9. device according to claim 8, wherein device a) is configured to iteratively about described D2D package
the each D2DUE pairing comprised determines described D2D package
transmitting power
10. method according to claim 9, wherein device a) comprising:
For calculating described D2D package by following formula in circulation t
the transmitting power P of the D2DUE pairing d comprised
dthe device e of (t)):
wherein
λ represents the unit price of the transmitting power stated by base station;
For command device e) repeatedly perform until the described transmitting power of all D2DUE pairing has all been updated in described circulation t device f);
For calculating described utility function
the device g of value);
Whether meet for basis
determine described D2D package
transmitting power
and the optimum unit price of described transmitting power
device h).
11. devices according to claim 8, wherein said costs factor is associated with the additional signaling overhead communicated for described D2D further.
12. devices according to Claim 8 according to any one of-11, wherein device d) comprising:
Indicate the cellular frequency spectrum Resourse Distribute occupied by described honeycomb UEc to described D2D package for collecting
situation, the described utility function with maximum
device i);
For cellular frequency spectrum resource that described honeycomb UEc is occupied together with the described D2D package determined
described transmitting power
distribute to described D2D package together
device j);
Also described D2D package is included in for getting rid of described cellular frequency spectrum resource that described honeycomb UEc occupies and comprising
in the D2D package of any D2DUE pairing to avoid further assigned unit k);
For command device i), device j) and device k) repeatedly perform until it is the device l that the D2DUE pairing of D has all been assigned with cellular frequency spectrum resource that cellular frequency spectrum resource that honeycomb UE that all described quantity is C occupies all has been assigned to described D2D package or all described quantity).
13. devices according to claim 12, wherein device d) comprise further:
For regulating the additional signaling overhead communicated for described D2D to change the device of the described costs factor of described utility function;
For command device c) to calculate the device of the value of described utility function based on the described costs factor through upgrading of described utility function.
14. devices according to Claim 8 according to any one of-13, wherein said N number of D2D package corresponds to all nonvoid subsets that described quantity is the D2DUE pairing of D, wherein N=2
d-1.
The device of 15. 1 kinds of Resourse Distribute communicated for the device-to-device (D2D) in cellular system, described cellular system comprises the D2DUE pairing that cellular subscriber device (UE) that quantity is C and quantity are D, described quantity is that the D2DUE pairing of D is divided into N number of D2D package, and described device comprises:
At least one processor and at least one comprise the memory of computer program code,
Described memory and described computer program code are configured such that described device at least:
A) the cellular frequency spectrum resource occupied for honeycomb UEc, by making corresponding utility function U
c → nmaximize and determine D2D package
transmitting power
wherein said D2D package comprises the one or more D2DUE pairings can carrying out operating to share described cellular frequency spectrum resource, and wherein said utility function represents at the cellular frequency spectrum Resourse Distribute occupied by described honeycomb UEc to described D2D package
when the costs factor that is associated with at least additional emission power consumption that described D2D communicates and the gain of channel global rate between difference;
B) for described quantity be C honeycomb UE in the described cellular frequency spectrum resource that occupies of each honeycomb UE, be that each the D2D package in the D2D package of N performs step a) repeatedly to described quantity;
C) based on for described quantity be C honeycomb UE in the described cellular frequency spectrum resource that occupies of each honeycomb UE and the described transmitting power that all described N number of D2D packages are determined, calculate the value of described utility function;
D) sort with the described value of descending to the described utility function calculated, to determine cellular frequency spectrum Resourse Distribute for described multiple D2DUE pairing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/071233 WO2014117377A1 (en) | 2013-01-31 | 2013-01-31 | Method and apparatus for resource allocation for device-to-device communication |
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| CN108495332A (en) * | 2018-03-28 | 2018-09-04 | 山东大学 | A kind of federated resource fair allocat method based on honeycomb D2D communication systems |
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| WO2017051221A1 (en) * | 2015-09-25 | 2017-03-30 | Telefonaktiebolaget Lm Ericsson (Publ) | Interference management for multiuser in-coverage device to device communication |
| CN105554894B (en) * | 2016-02-05 | 2019-05-21 | 中国矿业大学 | H2H and M2M terminal transmission power cooperative control method in mobile network |
| WO2018209471A1 (en) * | 2017-05-15 | 2018-11-22 | 深圳市卓希科技有限公司 | Communication resource allocation method and system |
| CN110798895B (en) * | 2019-08-05 | 2023-04-07 | 深圳大学 | Relay excitation method, relay excitation device, electronic apparatus, and storage medium |
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