CN109951828A - It is a kind of social activity sensing network in D2D multicast video transmission method for channel allocation - Google Patents
It is a kind of social activity sensing network in D2D multicast video transmission method for channel allocation Download PDFInfo
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Abstract
The present invention relates to a kind of method for channel allocation of D2D multicast video transmission in social sensing network, including D2D multicast cluster → access control → optimum transmission power distribution → optimal channel assignment.The beneficial effects of the present invention are: the channel assignment strategy that D2D multicast video transmits in the social activity sensing network by the D2D multi-casting communication in two stages by will be added in the transmission of video of conventional cellular network, so that being in the D2D multi-casting communication of first stage, video can be transferred to the phone user in cell in a manner of multicast base station, it and is the transmission process of a full load, then it is in the D2D multi-casting communication of second stage, selecting first can be as the phone user of D2D multicast group cluster head, after forming D2D multicast cluster, cluster head user is in a manner of the up channel frequency spectrum resource for being multiplexed other phone users, the video data that oneself is received is transmitted to the D2D user in multicast group.
Description
Technical field
The present invention relates to the technical field of video transmission of wireless communication, D2D multicast in specially a kind of social sensing network
The method for channel allocation of transmission of video.
Background technique
In recent years, with the popularization of intelligent terminals, number of users was continuously increased, and video traffic is also increasing, tradition
The problem of Video Multicast communication centered on base station is faced with base station overwork, and current limited frequency spectrum resource is not
All terminal users can be allowed all to access in network, the D2D communication technology is made by the frequency spectrum resource of multiplexing license in geographical position
It sets neighbouring equipment to be communicated directly with one another, without accessing base station.
In existing Video Multicast transmission process, there are the capacity of system user, the availability of frequency spectrum is low, user's access rate is low
The problems such as, the transmission of video work of social wireless communication is seriously affected, for this purpose, it is proposed that a kind of D2D in social activity sensing network
The method for channel allocation of multicast video transmission.
Summary of the invention
The purpose of the present invention is to provide a kind of method for channel allocation of D2D multicast video transmission in social sensing network,
To solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme: D2D multicast video passes in a kind of social activity sensing network
Defeated method for channel allocation, including D2D multicast cluster → access control → optimum transmission power distribution → optimal channel assignment.
Preferably, the channel assignment strategy that D2D multicast video transmits in the described social activity sensing network includes the following steps:
(1) after Video Multicast is transferred to the phone user in cell by base station, according to physical distance thresholding and social networks
Thresholding forms D2D multicast cluster.
(2) the access control of D2D multicast group.It is required according to minimum SINR and maximum transmission power constrains, when D2D multicast group
When n can be multiplexed the up channel access network of phone user m, meet three conditions:
WhereinThe transmission power intersection point seat of equation is sought for the minimum SINR of phone user and D2D user
Mark.By the available multicast group set G for having access to network of this step, and finds and all potentially may be used for each multicast group
It is multiplexed phone user.
(3) by
It can be each of set G multicast group and its transmission power of reusable phone user's optimal scheme
(4) optimum transmission power pair obtained according to step 3 is increased with the handling capacity that multicast group n multiplexing phone user m is obtained
Benefit is weight, is matched by two points between D2D multicast group and phone user, obtains maximizing the optimal of D2D user throughput
Channel distribution.
Compared with prior art, have following the utility model has the advantages that by the way that biography will be added to by the D2D multi-casting communication in two stages
Unite cellular network transmission of video in so that be in the first stage D2D multi-casting communication, can by base station by video with multicast
Mode be transferred to the phone user in cell, and be the transmission process of a full load, be then in the D2D multicast of second stage
Communication, selecting first can be as the phone user of D2D multicast group cluster head, and after forming D2D multicast cluster, cluster head user is to be multiplexed it
The mode of the up channel frequency spectrum resource of his phone user, the video data that oneself is received are transmitted to the D2D in multicast group
User, and the access control, optimum transmission power distribution and preferred channels that Channel Assignment Problems are decomposed into D2D multicast group are divided
It is analyzed with three problems, maximizes the transmission of video handling capacity of D2D user and the access rate of D2D user, which passes through
It is multiplexed uplink resource and carries out transmission of video, further promote frequency spectrum resource utilization rate；It is improved by the way that D2D multi-casting communication is added
User's access rate, and effectively unload the load of base station, the Video service quality of lifting system entirety.
Detailed description of the invention
Fig. 1 is the structural representation of the method for channel allocation of D2D multicast video transmission in a kind of social sensing network of the present invention
Figure；
Fig. 2 is the example scenario of the method for channel allocation of D2D multicast video transmission in a kind of social sensing network of the present invention
Structural schematic diagram；
Fig. 3 is that seven kinds of the method for channel allocation of D2D multicast video transmission in a kind of social sensing network of the present invention are feasible
The optimal power allocation structural schematic diagram of situation；
Fig. 4 is that the D2D user of the method for channel allocation of D2D multicast video transmission in a kind of social sensing network of the present invention connects
Enter the simulation architecture schematic diagram of rate；
Fig. 5 is the D2D user of the method for channel allocation of D2D multicast video transmission in a kind of social sensing network of the present invention
Transmission of video handling capacity simulation architecture schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of technical solution: it is a kind of social activity sensing network in D2D multicast video transmission channel distribution side
Method, including D2D multicast cluster → access control → optimum transmission power distribution → optimal channel assignment.
Embodiment 1
Please refer to Fig. 1-5
(1) it constrains to form D2D multicast cluster according to physical distance thresholding, social networks thresholding and first stage SINR first,
Obtain phone user's set C in cluster head user's set H and D2D multicast stage.
1) from phone user's set HCMiddle selection cluster head user h, needs to meet:Wherein ei,jFor physics
The comprehensive instruction parameter of condition, social networks condition and SINR condition；
2) D2D user's set H is traversedDIn user hdIf met:Then it is added using user h as cluster head
D2D multicast gathering closes HD(h).If set HD(h) element number, that is, D2D user's number nh>=1, then cluster head is added in user h and used
Family set H, and rejected from phone user's set C after sub-clustering, i.e. C=C- { h }, while multicast gathering is closed into HD(h) it is added
D2D user set D, i.e. D=D+H after sub-clusteringD(h)；
3) H is updatedC=HC{ h }, HD=HD-HD(h).If set HCElement number be greater than 1, then go to step 1).
(2) the access control of D2D multicast group, requires according to minimum SINR and maximum transmission power constrains, and each parameter meets:
Then D2D multicast group n can access network by being multiplexed the up channel of phone user m.WhereinFor bee
The minimum SINR of nest user and D2D user will seek the intersecting point coordinate of equation.Obtain having access to the multicast of network by step 2
Group set G, and all potential reusable phone users are found for each multicast group.
(3) by the geometrical analysis of Fig. 3, according to power limit pairWith the relative position of constraint condition, optimal hair
The analysis for penetrating power is divided into seven kinds of situations of (a)-(g).By
Obtain the transmission power that multicast group n and its reusable phone user m is optimal under different situationsValue.
(4) value of the optimum transmission power pair obtained according to step 3, by
Throughput gain obtained in multicast group n multiplexing phone user m access network is calculated.With Yn,mFor weight, lead to
Two points of matching algorithms between D2D multicast group and phone user are crossed, the preferred channels point for maximizing D2D user throughput are obtained
Match.
Embodiment 2
Please refer to Fig. 4
Physical distance and social networks constraint are different, and user's access rate is different.When constraint condition where appropriate, D2D user connects
Entering rate can achieve the number of 90%, D2D user to access rate almost without influence.
Embodiment 3
Please refer to Fig. 5
With the increase of D2D user's number, the handling capacity of D2D user is also continuously increased, and the handling capacity of D2D user is namely
D2D communication is incorporated as system bring throughput gain.
The working principle of the present embodiment: the channel assignment strategy that D2D multicast video transmits in the social activity sensing network, first
After Video Multicast is transferred to the phone user in cell by base station, formed according to physical distance thresholding and social networks thresholding
D2D multicast cluster, meanwhile, the access control of D2D multicast group, requires according to minimum SINR and maximum transmission power constrains, and with more
Broadcasting the throughput gain that group n multiplexing phone user m is obtained is weight, and passes through two points between D2D multicast group and phone user
Matching obtains the optimal channel assignment for maximizing D2D user throughput.
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art,
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within bright protection scope.
Claims (2)
1. the method for channel allocation of D2D multicast video transmission in a kind of social activity sensing network, it is characterised in that: including D2D multicast
Cluster → access control → optimum transmission power distribution → optimal channel assignment.
2. the method for channel allocation of D2D multicast video transmission, special in a kind of social sensing network according to claim 1
Sign is: the channel assignment strategy that D2D multicast video transmits in the described social activity sensing network includes the following steps:
(1) after Video Multicast is transferred to the phone user in cell by base station, according to physical distance thresholding and social networks thresholding
Form D2D multicast cluster.
(2) the access control of D2D multicast group.It is required according to minimum SINR and maximum transmission power constrains, when D2D multicast group n can
When accessing network to be multiplexed the up channel of phone user m, meet three conditions:
WhereinThe transmission power intersecting point coordinate of equation is sought for the minimum SINR of phone user and D2D user.It is logical
The available multicast group set G for having access to network of this step is crossed, and finds all potential reusables for each multicast group
Phone user.
(3) by
It can be each of set G multicast group and its transmission power of reusable phone user's optimal scheme
(4) optimum transmission power pair obtained according to step 3, the throughput gain with multicast group n multiplexing phone user m acquisition are
Weight is matched by two points between D2D multicast group and phone user, obtains the preferred channels for maximizing D2D user throughput
Distribution.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110418288A (en) * | 2019-07-24 | 2019-11-05 | 西安科技大学 | D2D multi-casting communication cluster-dividing method based on user social contact attribute |
| CN110933693A (en) * | 2019-12-04 | 2020-03-27 | 国网河南省电力公司许昌供电公司 | Channel determination and data processing method and device and electronic equipment |
| CN113099421A (en) * | 2020-01-08 | 2021-07-09 | 中国科学院上海高等研究院 | Wireless multicast method, system, medium and terminal based on non-orthogonal transmission and D2D transmission |
-
2019
- 2019-04-01 CN CN201910257604.7A patent/CN109951828A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110418288A (en) * | 2019-07-24 | 2019-11-05 | 西安科技大学 | D2D multi-casting communication cluster-dividing method based on user social contact attribute |
| CN110418288B (en) * | 2019-07-24 | 2020-12-25 | 西安科技大学 | D2D multicast communication clustering method based on user social attributes |
| CN110933693A (en) * | 2019-12-04 | 2020-03-27 | 国网河南省电力公司许昌供电公司 | Channel determination and data processing method and device and electronic equipment |
| CN110933693B (en) * | 2019-12-04 | 2023-04-21 | 国网河南省电力公司许昌供电公司 | Channel determination and data processing method and device and electronic equipment |
| CN113099421A (en) * | 2020-01-08 | 2021-07-09 | 中国科学院上海高等研究院 | Wireless multicast method, system, medium and terminal based on non-orthogonal transmission and D2D transmission |
| CN113099421B (en) * | 2020-01-08 | 2023-09-01 | 中国科学院上海高等研究院 | Wireless multicast method and system based on non-orthogonal transmission and D2D transmission, medium and terminal |
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