CN107222907A - The cellular network transmission method of auxiliary is relayed based on up non-orthogonal multiple - Google Patents
The cellular network transmission method of auxiliary is relayed based on up non-orthogonal multiple Download PDFInfo
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- CN107222907A CN107222907A CN201710326308.9A CN201710326308A CN107222907A CN 107222907 A CN107222907 A CN 107222907A CN 201710326308 A CN201710326308 A CN 201710326308A CN 107222907 A CN107222907 A CN 107222907A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
- H04W40/32—Connectivity information management, e.g. connectivity discovery or connectivity update for defining a routing cluster membership
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a kind of cellular network transmission method that auxiliary is relayed based on up non-orthogonal multiple, N number of user in Cellular Networks in via node coverage is formed into a cluster, relaying is located at cluster center；User uplink link information transmitting procedure is in cluster：User's via node base station.It is assumed that in duration T, while user transmits information to via node, via node transmits information to base station.User transmits information to via node in resource allocation using OFDM pattern in cluster, and unique user only takes up a band resource；Via node works in a full-duplex mode, and the user profile of arrival via node is decoded immediately is transmitted to base station, and bandwidth resource allocation uses NOMA patterns during this, and user profile will be uploaded to base station with whole bandwidth in cluster；Numerical Simulation Results show that user uplink link information transmission plan proposed by the present invention is compared compared to more traditional method only with OFDMA uplink, are capable of the spectrum efficiency of effective lifting system.
Description
Technical field
The invention belongs to wireless communication technology field, relayed more particularly, to one kind based on up non-orthogonal multiple auxiliary
The cellular network transmission method helped.
Background technology
It is electric with extensive popular and IN service such as intelligent meter data recording, intelligent transportation, the intelligence of intelligent terminal in recent years
The data traffic that the popularization of the business such as net carries mobile network rapidly increases.The sharp increase of mobile network's traffic demand is to originally
Rare radio spectrum resources are brought to bigger pressure.Improving frequency spectrum resource utilization rate becomes contemporary broadband radio communication
The problem of urgent need to resolve.
Can only will be single in traditional OMA (Orthogonal Multiple Access, orthogonal multiple access access) technology
Radio resource allocation gives a user, such as OFDMA (Orthogonal Frequency Division Multiple
Access, OFDM) technology, it is impossible to different transmission powers is distributed for multiple users to realize that power domain is multiplexed, because
This spectrum efficiency is relatively low, it is impossible to effectively save radio spectrum resources, causes the waste of frequency spectrum resource.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, it is based on the invention provides one kind in up non-orthogonal multiple
It is up its object is to lift cellular network on the premise of user's proper communication is met after the cellular network transmission method of auxiliary
The transmission spectrum efficiency of link.
To achieve the above object, relayed according to one aspect of the present invention there is provided one kind based on up non-orthogonal multiple
The cellular network transmission method of auxiliary, comprises the following steps：
(1) current network information is obtained, N number of user in via node coverage is formed into a cluster, relaying is saved
User profile transmitting procedure in cluster is set to by point positioned at the center of cluster：User-via node-base station；
Using pilot signal obtain range information, including user i to via node apart from di,r, via node to base station
Apart from dr,bAnd user i to base station apart from di,b；And obtain the information content D that each user in cluster needs to transmiti(i∈{1,
2 ..., N) and cluster in the available total bandwidth W of user；
(2) user transmits information to user in via node, and cluster using OFDMA patterns and existed with via node in cluster
Information transfer is completed in time T；
(3) via node is set to FD (Full-Duplex, full duplex) pattern, NOMA (Non- is used by via node
Orthogonal Multiple Access, non-orthogonal multiple access) the pattern information that transmits user in cluster solves immediately
Code is transmitted to base station.
Preferably, the cellular network transmission method of above-mentioned up non-orthogonal multiple relaying auxiliary, its step (2) is included such as
Lower sub-step：
(2.1) total bandwidth available W in cluster is uniformly divided into N number of sub-band, by user in cluster in time T by information transfer
To via node, unique user only takes up a sub-band in transmission；
(2.2) transmission power of user i in cluster is set to：
Wherein, α refers to path-loss factor, σ2What is represented is that user profile is transferred to generation during via node in cluster
Thermal noise power.
Preferably, in the cellular network transmission method of above-mentioned up non-orthogonal multiple relaying auxiliary, its step (3)：
(a) available whole bandwidth for transmission user profile in cluster are used when via node forwards user profile in time T,
Unique user transmission information is shared with a width of W；
(b) via node is set to FD patterns, reaches user profile in the cluster of via node and be immediately decoded and be transmitted to
Base station；
(c) base station end is receiving mixed signal yBSAfter perform SIC, the information content that decoding order is transmitted according to user from height to
Low decoding.
Preferably, in the cellular network transmission method of above-mentioned up non-orthogonal multiple relaying auxiliary, its step (3), base
The signal that termination of standing is received
Wherein, Pr,iRefer to that via node distributes to user i power, sr,iRefer to that via node is transferred to the letter of base station
Number, su,iRefer to the upstream signals of user i in cluster, nr,bRefer to thermal noise signal.
Preferably, in the cellular network transmission method of above-mentioned up non-orthogonal multiple relaying auxiliary, its step (3), i-th
The speed of the individual user being decoded
Preferably, in the cellular network transmission method of above-mentioned up non-orthogonal multiple relaying auxiliary, its step (3), in
It is to the transimission power of N number of user after node distribution：
···
Preferably, in the cellular network transmission method of above-mentioned up non-orthogonal multiple relaying auxiliary, its step (3), in
After transimission power of the node distribution to i-th of user
In general, by the contemplated above technical scheme of the present invention compared with prior art, it can obtain down and show
Beneficial effect：
(1) cellular network ascending transmission method proposed by the present invention, its user uplink link signal transmission process is：With
Family-via node-base station；N number of user in via node coverage is formed into a cluster, via node is located in cluster
Heart position；User transmits information to via node using OFDMA resource distribution mode in cluster；It is swift and violent for following Internet of Things
The new business such as intelligent meter data recording, reading intelligent agriculture and intelligent government utility (coal gas and water, electricity) measurement produced by development, it is this kind of
New business has in some fixed range more than number of user equipment and the characteristics of being all small data quantity data transfer；For this kind of
The method that business is provided using the present invention, user can transmit information to via node, and the biography using small transmission power
Defeated mode time is controllable, interference-free influence；
(2) cellular network ascending transmission method proposed by the present invention, via node uses FD patterns, reaches via node
User profile decodes forwarding immediately, and without entering row information storage in via node, information transfer is ageing more preferably；Via node will
When user profile is transferred to base station in cluster, by user profile hybrid coding in the cluster for reaching via node, using available in cluster
Whole bandwidth upload information, can effectively save bandwidth, improve the availability of frequency spectrum of user uplink link information transmission；And
Because the transmission power for distributing to user in cluster is smaller, user's transmission in cluster can be introduced in transmitting procedure base station end signal is connect
The interference of receipts is relatively small；
In general, it is proposed that above technical scheme by transmitting terminal using non-orthogonality signal send, to many
Individual user distributes different transmission powers and realizes that power domain is multiplexed, and same frequency spectrum resource is distributed into multiple users, and connecing
Receiving end realizes demodulation by performing SIC (Successive Interference Cancellation, successive interference cancellation), with
Existing use upgoing O FDMA communication means is compared, can in the case where not increasing the total transmission power of system and frequency spectrum resource
System spectral efficiency is effectively improved, and then improves the performance of whole communication network；Both future mobile communications had been met to spectrum efficiency
Requirement, the trend of green communications is met again.
Brief description of the drawings
Fig. 1 is a kind of Cellular Networks link transmission method that auxiliary is relayed based on up NOMA that the embodiment of the present invention is used
System model schematic diagram；
Fig. 2 is that user profile transmission transmits information to the process of base station two with via node in cluster in the embodiment of the present invention
Bandwidth resource allocation situation；Wherein, Fig. 2 (a) is the bandwidth resource allocation situation of user profile transmitting procedure in cluster, Fig. 2 (b)
The bandwidth resource allocation situation of base station process is transmitted information to for via node；
Fig. 3 is a kind of Cellular Networks link transmission method that auxiliary is relayed based on up NOMA provided in an embodiment of the present invention
Flow chart；
Fig. 4 is the method and the spectrum efficiency simulation comparison figure under traditional OFDMA resource allocation conditions of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Not constituting conflict each other can just be mutually combined.
A kind of cellular network transmission method that auxiliary is relayed based on up NOMA that the present invention is provided, by cellular network
User is carried out user in sub-clustering, cluster and user profile is transferred to the via node in cluster, via node using OFDMA transmission modes
The information that user transmits in forwarding cluster is decoded using FD patterns immediately, sent to user profile using NOMA transmission modes
Base station, so as to lift the spectrum efficiency of whole network up-link.
It is the cellular network subscriber relaying auxiliary transmission system model in the embodiment of the present invention, in the transmission system shown in Fig. 1
Unite in model, user profile transmitting procedure is：User-via node-base station.
Shown in Fig. 2 is the frequency spectrum that user profile transmission transmits information to during base station two with via node in cluster
The utilization power schematic diagram of resource；As shown in Fig. 2 (a), user profile transmit the stage using OFDMA patterns in cluster, in cluster always
With a width of W, N number of sub-band is divided into, the band of each sub-band is a width ofUnique user only takes up a son frequency when transmitting
Interference is not present between band, user.As shown in Fig. 2 (b), when user profile is transmitted between via node and base station, adopt
NOMA patterns are used, N number of user shares the frequency band transmission with a width of W, there is self-interference each other；User conveys information in cluster
During via node, base station information can also be received and interfered.
Shown in Fig. 3 is a kind of honeycomb network uplink that auxiliary is relayed based on up NOMA provided in an embodiment of the present invention
The flow chart of transmission method, specifically includes following steps：
(1) current network information is obtained, N number of user in via node coverage is formed into a cluster, relaying is saved
Point is positioned at the center of cluster；
Using pilot signal obtain range information, including user i to via node apart from di,r, via node to base station
Apart from dr,bAnd user i to base station apart from di,b；And obtain the information content D that each user in cluster needs to transmiti(i∈{1,
2 ..., N) and cluster in the available total bandwidth W of user；Wherein, user profile transmitting procedure is in cluster：User-via node-
Base station；
(2) it is the son frequency that unique user distribution width is W/N during user profile is transferred to via node in cluster
Band is to transmit information；User transfers information to via node in time T in cluster, sets user i transmission power
Wherein α refers to path-loss factor, σ2Refer to that user profile is transferred to the heat produced during via node in cluster
Noise power；
(3) during user profile in cluster is transferred into base station by via node, the pattern that via node is worked
It is set to FD patterns；The information of user's arrival via node is decoded immediately in cluster is transmitted to base station；
Via node uploads information to base station in time T with available whole bandwidth in cluster, and user profile is using mixing
The mode of coding is uploaded；
Base station end performs SIC, and the information content that decoding order is transmitted according to user is decoded from high to low；Via node is distributed to
The transmission power of each user is specific as follows：
···
The spectrum efficiency that user uplink link information is transmitted in the present invention
Fig. 4 is with using the frequency spectrum under traditional OFDMA resource allocation conditions in embodiment using the method for the present invention
Efficiency simulation comparison figure；
Wherein, user's number N=3 in cluster, noise power is σ2=-110dBm；Three user distance via nodes away from
From respectively：d1,r=8m, d2,r=9m, d3,r=10m, the distance of three user distance base stations is respectively：d1,b=35m, d2,b=
36m、d3,b=37m, via node reach base station apart from dr,n=30m；The data volume that three users intend transmission is：D1=
20Mbit,D2=16Mbit, D3=12Mbit.Available frequency spectrum resource is W=10MHZ, path-loss factor α=3 in cluster；Root
Understand that, compared to more traditional OFDMA frequency spectrum resource methods of salary distribution, method provided by the present invention can be lifted effectively according to Fig. 4
The spectrum efficiency of whole system.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc., it all should include
Within protection scope of the present invention.
Claims (7)
1. a kind of cellular network transmission method that auxiliary is relayed based on up non-orthogonal multiple, it is characterised in that including following step
Suddenly：
(1) current network information is obtained, N number of user in via node coverage is formed into a cluster, makes via node position
In the center of cluster, user profile transmitting procedure in cluster is set to：User-via node-base station；
Using pilot signal obtain range information, including user i to via node apart from di,r, via node to base station away from
From dr,bAnd user i to base station apart from di,b；And obtain the information content D that each user in cluster needs to transmiti(i∈{1,2,...,
N }) and cluster in the available total bandwidth W of user；
(2) user transmits information in via node, and cluster user with via node in the time using OFDMA patterns in cluster
Information transfer is completed in T；
(3) via node is set to full-duplex mode, non-orthogonal multiple access module is used by user in cluster by via node
The information transmitted is decoded immediately is transmitted to base station.
2. cellular network ascending transmission method as claimed in claim 1, it is characterised in that the step (2) includes following son
Step：
(2.1) total bandwidth available W in cluster is uniformly divided into N number of sub-band, in user in cluster transmits information in time T
After node, unique user only takes up a sub-band in transmission；
(2.2) transmission power of user i in cluster is set to：
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Wherein, α refers to path-loss factor, σ2What is represented is that user profile is transferred to the heat produced during via node in cluster
Noise power.
3. cellular network ascending transmission method as claimed in claim 1 or 2, it is characterised in that in the step (3)：
(a) available whole bandwidth for transmission user profile in cluster are used when via node forwards user profile in time T, it is single
User's transmission information is shared with a width of W；
(b) via node is set to FD patterns, reaches user profile in the cluster of via node and be immediately decoded and be transmitted to base station；
(c) base station end is receiving mixed signal yBSAfter perform SIC, the information content that decoding order is transmitted according to user is solved from high to low
Code.
4. cellular network ascending transmission method as claimed in claim 3, it is characterised in that in the step (3), base station termination
The signal received
Wherein, Pr,iRefer to that via node distributes to user i power, sr,iRefer to that via node is transferred to the signal of base station, su,i
Refer to the upstream signals of user i in cluster, nr,bRefer to thermal noise signal.
5. cellular network ascending transmission method as claimed in claim 4, it is characterised in that in the step (3), i-th of quilt
The speed of the user of decoding
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6. the cellular network ascending transmission method as described in claim 4 or 5, it is characterised in that in the step (3), relaying
Node distribution is to the transimission power of user：
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2
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| CN108834150A (en) * | 2018-06-22 | 2018-11-16 | 哈尔滨工业大学 | Cognition-cooperation non-orthogonal multiple cut-in method under half-duplex operating mode |
| CN108848552A (en) * | 2018-06-25 | 2018-11-20 | 浙江工业大学 | A kind of optimal decoding sequence uplink transmission time optimization method of nonopiate access based on linear search formula |
| CN109348481A (en) * | 2018-09-29 | 2019-02-15 | 哈尔滨工业大学 | One of cognitive radio networks full duplex cooperation non-orthogonal multiple cut-in method |
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| CN108012341A (en) * | 2017-12-05 | 2018-05-08 | 南京邮电大学 | The cut-in method of association node sub-clustering and data buffer storage in a kind of arrowband Internet of Things |
| CN108012341B (en) * | 2017-12-05 | 2021-04-06 | 南京邮电大学 | Access method for joint node clustering and data caching in narrowband Internet of things |
| CN110553965A (en) * | 2018-06-04 | 2019-12-10 | 中南大学 | pressurized water test detection method in grouting engineering |
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| CN108834150B (en) * | 2018-06-22 | 2022-07-12 | 哈尔滨工业大学 | Cognitive-cooperative non-orthogonal multiple access method under half-duplex working mode |
| CN108848552A (en) * | 2018-06-25 | 2018-11-20 | 浙江工业大学 | A kind of optimal decoding sequence uplink transmission time optimization method of nonopiate access based on linear search formula |
| CN108848552B (en) * | 2018-06-25 | 2021-05-18 | 浙江工业大学 | Non-orthogonal access optimal decoding sequencing uplink transmission time optimization method |
| CN109348481A (en) * | 2018-09-29 | 2019-02-15 | 哈尔滨工业大学 | One of cognitive radio networks full duplex cooperation non-orthogonal multiple cut-in method |
| CN109361445B (en) * | 2018-09-29 | 2020-11-13 | 哈尔滨工业大学 | Bidirectional non-orthogonal multiple access method using full duplex relay |
| CN109348481B (en) * | 2018-09-29 | 2022-07-12 | 哈尔滨工业大学 | Full-duplex cooperative non-orthogonal multiple access method in cognitive radio network |
| CN109361445A (en) * | 2018-09-29 | 2019-02-19 | 哈尔滨工业大学 | A kind of two-way non-orthogonal multiple cut-in method using full duplex relaying |
| CN109560844A (en) * | 2018-11-19 | 2019-04-02 | 浙江万里学院 | A kind of multi-user's relay transmission method based on non-orthogonal multiple access technology |
| CN109560844B (en) * | 2018-11-19 | 2021-10-15 | 浙江万里学院 | Multi-user relay transmission method based on non-orthogonal multiple access technology |
| CN109743768A (en) * | 2018-12-26 | 2019-05-10 | 南京邮电大学 | Bi-directional relaying communication plan based on non-orthogonal multiple access technology |
| CN109743768B (en) * | 2018-12-26 | 2022-04-15 | 南京邮电大学 | Bidirectional relay communication scheme based on non-orthogonal multiple access technology |
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