CN104853421A - Multi-access heterogeneous network downlink energy-saving transmission method - Google Patents

Multi-access heterogeneous network downlink energy-saving transmission method Download PDF

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Publication number
CN104853421A
CN104853421A CN201510305875.7A CN201510305875A CN104853421A CN 104853421 A CN104853421 A CN 104853421A CN 201510305875 A CN201510305875 A CN 201510305875A CN 104853421 A CN104853421 A CN 104853421A
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network
rat
transmission
descending
power save
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马骁
杨秋菊
辛经纬
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Shaanxi Normal University
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Shaanxi Normal University
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0215—Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices
    • H04W28/0221—Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices power availability or consumption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a multi-access heterogeneous network downlink energy-saving transmission method, mainly for solving the problem of incapability of guaranteeing user experience and reducing energy consumption of large-capacity transmission service by use of a conventional turn-off energy conservation technology. The realization steps are as follows: (1), negotiating all available networks with a multimode terminal and ordering the available networks; (2), determining whether energy-saving concurrent transmission needs to be carried out; (3), selecting an optimum network set for participating in the concurrent transmission according to user needs and network states; (4), calculating an optimum transmission rate for minimization of total power consumption; (5), calculating an optimum shunting proportion according to the optimum transmission rate; and (6), carrying out the concurrent power-saving transmission by use of the proportion. The method provided by the invention has the advantage of provable minimum total transmission power consumption.

Description

A kind of descending power save transmission method of multiple access heterogeneous network
Technical field
The present invention relates to wireless communication technology field, be specifically related to a kind of descending power save transmission method of multiple access heterogeneous network.
Background technology
Along with wireless network development, the raising of transmission rate makes various Emerging multimedia business (such as HD video business) popularize rapidly, and the steep increasing of user to high-speed high capacity transport service demand result in day by day increasing of equipment energy consumption.Current information and communication technology industry have become the fifth-largest high energy consumption industry, and its energy consumption accounts for the 2%-6% of global total energy consumption, and the greenhouse gas emissions caused account for 2% of global total release.On the other hand, although wireless network bandwidth rapid development, the profit of operator but increases increasingly slow, wants to rely on the method providing higher bandwidth to obtain larger profit for user to become more and more difficult, so one of important channel of becoming operator's profit of cutting operating costs.In the operation cost of current operator, half comes from the expense that equipment power consumption produces, and mainstream carrier has started the power consumption problem paying close attention to wireless base station.
The transmission of wireless signal is the important component part of wireless network energy consumption, how to make the higher key issue becoming green communications of energy consumption efficiency transmitted.But, existing power-economizing method mainly concentrates on base station, antenna or the inaccessible carrier wave of directly turning off redundancy and realizes energy-conservation, although energy-conservation object can be realized like this, but the percent of call lost of user can be improved, what to sacrifice the communication reliability of user be cost, reduce the QoE (Quality of Experiment, service experience) of user.What is more important, this kind of power-economizing method that is core with transfer resource shutoff all effectively cannot solve the high energy consumption problem that single high-speed high capacity transport service causes.
On the other hand, 5G (Fifth-Generation, the 5th Generation Mobile Communication System) will provide ubiquitous differentiation high-speed data access service for us.In order to provide this service, 5G network will present unique isomerism, and namely the wireless network (including but not limited to the wireless networks such as 2G, 3G, 4G and WIFI) of multiple use different radio access technologies is by long-term co-existence.As shown in Figure 1, the network of these different systems will cover same a slice physical region simultaneously, there is MUE (the MultimodeUser Equipment of multiple network access capability, multimode terminal) multiple network can be accessed simultaneously, and (so-called many nets concurrent transmission is exactly that multiple different network is considered as multiple parallel transmission channel to use many nets concurrent transmission, by traffic packets parallel transmission on multiple network, namely using the transfer resource of multiple network to serve for user simultaneously) technology serves single Large Copacity transport service.But, existing many nets concurrent transmission method, mainly for Large Copacity QoS of survice (Quality of Service, service quality) security problem, many nets concurrent transmission how is used to reduce the transmission power consumption of equipment, how reasonably managing the total power consumption that Multi net voting resource minimizes single high speed business, these problems are that the many nets of heterogeneous network transmit the significant challenge faced.
Summary of the invention
The object of the present invention is to provide a kind of descending power save transmission method of multiple access heterogeneous network, the power consumption relating to Access Network side apparatus in Wireless Heterogeneous Networks downlink transfer is saved, namely the method for Access Network side apparatus energy ezpenditure is saved in heterogeneous network by many nets concurrent transmission, to overcome the defect that above-mentioned prior art exists, the present invention is according to available network Set Status information, in conjunction with Large Copacity service transmission rate demand, the network that choose reasonable is suitable carries out concurrent transmission, and by the corresponding traffic carrying capacity of network allocation to each participation concurrent transmission, finally under the prerequisite ensureing user QoS, realize the object minimizing network equipment transmission total power consumption.
For achieving the above object, the present invention adopts following technical scheme:
A kind of descending power save transmission method of multiple access heterogeneous network, comprises the following steps:
Step 1: when carrying out downlink data transmission, first the MRRM functional entity in multiple access heterogeneous network consults available wireless-transmission network with MUE, sorts to available network according to optimal network ordering strategy, and puts available network set RAT={RAT according to the order of sequence 1, RAT 2..., RAT k;
Step 2: utilize the available network set in step 1, according to network resource status information and service rate, MRRM performs Large Copacity business decision criteria, judge whether the business transmitted belongs to the High rate and large capacity transport service needing to carry out the concurrent power save transmission of Multi net voting, if so, then perform step 3, start the concurrent power save transmission of descending Multi net voting, if not, then use single network transfer method to carry out business transmission, power save transmission method terminates;
Step 3:MRRM, according to descending optimal network selection strategy, selectes the wireless-transmission network needing to participate in the concurrent power save transmission of Multi net voting, juxtaposition selected network set RAT from available network set RAT *={ RAT 1, RAT 2..., RAT m;
Step 4: utilize optimal transmission collection of network RAT selected in step 3 *, MRRM according to descending optimal transmission rate allocation algorithm, calculate downlink transfer power consumption minimum time, the optimal transmission speed of each selected network R * = { R 1 * , R 2 * , . . . , R M * } ;
Step 5: utilize the optimal transmission speed R calculated in step 4 *, MRRM calculates optimum service distributing ratio Φ={ φ that each network carries 1, φ 2..., φ m, and according to this ratio, traffic packets is branched to map network and transmit.
Further, multiple access heterogeneous network refers to have multiple different systems wireless networks coexist and the common heterogeneous wireless network covered simultaneously, and wherein the wireless network of different systems comprises 2G, 3G, 4G cellular network, WIFI network.
Further, the concurrent power save transmission of Multi net voting refers to the Radio Access Network of multiple different systems to be considered as multiple parallel transmission channel, by traffic packets parallel transmission on multiple network, namely uses the transfer resource of multiple heterogeneous networks to serve for user simultaneously.
Further, MRRM refers to the network element entity that simultaneously can manage different networks resource, and MUE refers to the terminal equipment simultaneously possessing plurality of wireless networks access capability.
Further, in step 1, MRRM and MUE negotiations process mainly comprises MUE and reports available wireless communication status, and wireless communication status comprises the wireless network kind of support, uses RAT irepresent, total K available network, the resource state information that each available network is corresponding, comprises the kind of information, available volume of resources B iwith channel power gain g i.
Further, the optimal network ordering strategy described in step 1, referring to minimize access point downlink transfer total power consumption is target, and the optimal selection order of corresponding available network, specific strategy is: if RAT icorresponding channel power gain g ibe greater than RAT jcorresponding channel power gain g j, i.e. g i> g j, then RAT irAT will be had precedence over jused, network arranges according to the descending of its channel power gain, RAT={RAT 1, RAT 2..., RAT krepresent according to the available network set after channel power gain descending, i.e. g 1< g 2< ... < g k.
Further, the Large Copacity business decision criteria in step 2 refers to judge whether the service rate transmitted exceedes the enabling gate limit value needing to enable the concurrent power save transmission of Multi net voting, is specially R req> B 1log 2(g 1/ g 2), namely service rate is greater than enabling gate limit value and then starts to carry out Multi net voting concurrent transmission.
Further, the descending optimal network selection strategy in step 3 refers to select the network needing to participate in concurrent transmission, comprises the steps:
Step 3.1: the threshold value set that each available network is set, even represent the set of the threshold value that heterogeneous networks is corresponding, utilize formula (1) to calculate the enabling gate limit value of each network successively
Step 3.2: according to the web portal limit value of step 3.1, (2) formula of utilization calculates RAT successively 1~ RAT k-1the service rate threshold value that network is corresponding order colocation rate threshold value set R reqb = { R 1 reqb , R 2 reqb , . . . , R K reqb } ;
&PartialD; P ( R 1 b ) &PartialD; R 1 = &PartialD; P ( R 2 b ) &PartialD; R 2 = . . . = &PartialD; P ( R i b ) &PartialD; R i = &PartialD; P ( 0 ) &PartialD; R i + 1 R i reqb = &Sigma; j = 1 i R j b - - - ( 2 )
Wherein, represent to R isingle order local derviation;
Step 3.3: according to the result of calculation of step 3.2, by service rate R req, find M, make then a front M network is the optimal network needing to participate in descending concurrent power save transmission, and namely optimal network set is RAT *={ RAT 1, RAT 2..., RAT m, M≤K.
Further, the optimal transmission rate allocation algorithm in step 4 refers to for set RAT *in the transmission rate of each network allocation optimum, be specially the optimal rate that utilization (3) formula calculates map network successively the set of juxtaposition optimal rate R * = { R 1 * , R 2 * , . . . , R M * } ;
Further, the optimum service distributing ratio in step 5 refers to utilize set R *in value, (4) formula of utilization calculates the shunt ratio of map network successively, then carry out Multi net voting concurrent transmission according to this ratio and Access Network side apparatus downlink transfer total power consumption can be made minimum;
&phi; i = R i * R req - - - ( 4 ) .
Compared with prior art, the present invention has following useful technique effect:
1) solve the problem that single Large Copacity business transmission power consumption is too high, achieve access network equipment total power consumption and reduce
Current network equipment power-economizing method mainly adopts the technology such as equipment shutoff, saves energy expense by the equipment of directly closing redundancy when offered load is lighter.These class methods cannot solve high energy consumption problem during the heavier or single high speed business transmission of overall load, and reason is that now network is not in redundant state, and closing fractional transmission equipment can cause resource shortage, reduces customer service and experiences.The power save transmission strategy that the present invention proposes makes full use of next generation network isomery feature, and in conjunction with concurrent transmission technology, by effectively utilizing Multi net voting diversity gain, the transmission total power consumption achieved for single Large Copacity business reduces.
2), under ensureing the prerequisite that customer service is experienced, minimizing of business transmission power consumption is achieved
The present invention is according to customer service demand, to minimize for the purpose of transmission power consumption, combining on the basis considering all available network resource state informations, the collection of network of the most applicable transmission of choose reasonable, and to the network allocation best service ratio of each participation concurrent transmission, the final optimal transmission the demonstrate,proved power consumption realizing ensureing under QoS prerequisite.
3) good with existing shutoff power-saving technology adaptability
Application of the present invention selects optimum network set in all available networks of MUE, and distribute the business proportion be applicable to, and do not limit number and the kind of available network in this process.So the present invention does not conflict with the energy-conservation end of existing shutoff, the two can conbined usage, and after redundant resource is fallen in the energy-conservation end closedown of shutoff, the present invention still can use surplus resources to realize the minimized object of Large Copacity business transmission total energy consumption.
Accompanying drawing explanation
Fig. 1 is scene graph of the present invention;
Fig. 2 is the flow chart of the inventive method;
Fig. 3 is operation principle block diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
See Fig. 1, the scene that the present invention uses comprises the wireless network be made up of the wireless access technology that K kind is different, i.e. RAT 1, RAT 2rAT k, wherein K>=2, K access network is all connected with MRRM (Multi-Radio Resource Management, joint radio resource management) module, common formation multiple access heterogeneous network system; The MUE being in K the common overlay area of network can access this K network simultaneously, MUE apply for transmit business can carry out concurrent transmission on this K network, suppose that the demand rate of MUE institute transport service is R req.
With reference to Fig. 2 and 3, the present invention is directed to the method that Fig. 1 use scenes carries out multiple access heterogeneous network power save transmission, its concrete implementation step is as follows:
Step one: when MUE applies for business transmission, first connected by self network channel monitoring module and all available K networks, the channel condition information detecting K available network respectively corresponding (includes but not limited to the kind of information, available volume of resources B iwith channel power gain g ietc. information), and by this information reporting to the MRRM of network side.
With reference to figure 1, the scene that the present invention uses for LTE and UMTS two heterogeneous networks, but is not limited to two networks.Suppose that the available channel bandwidth of LTE network is B l, respective channels power gain is g l, the available channel bandwidth of UMTS network is B u, respective channels power gain is g u.
Step 2: MRRM sorts to available network according to optimal sequencing law, the set of juxtaposition available network.Be specially MRRM channel power gain is arranged according to descending, without loss of generality, suppose g l> g u, then LTE network will have precedence over UMTS network and used, and available network set is RAT={RAT l, RAT u.
Step 3: MRRM judges whether done business is the high speed business needing to carry out the concurrent power save transmission of many nets.Suppose customer service demand rate R req> B llog 2(g l/ g u), need carry out many nets and pass.
Step 4: MRRM calculates service rate threshold value corresponding to each network according to formula (1) formula (2), is specially because B llog 2(g l/ g u) < R req<+∞, so LTE and UMTS network all will participate in concurrent transmission.
Step 4: MRRM calculates two networks according to formula (3) and divides other optimal transmission speed R L * = B L R req - B L B U log 2 g U g L B L + B U With R U * = B U R req + B L B U log 2 g U g L B L + B U .
Step 5: MRRM calculates the optimum shunt ratio of each network, with &phi; U * = R U * / R req .
Step 6: user service data packet scheduling transmits to corresponding network according to optimum shunt ratio by the diverter module in MRRM.
Step 7: each network independently transmits respective packet, and is sent to high level after end side merges.

Claims (10)

1. the descending power save transmission method of multiple access heterogeneous network, is characterized in that, comprise the following steps:
Step 1: when carrying out downlink data transmission, first the MRRM functional entity in multiple access heterogeneous network consults available wireless-transmission network with MUE, sorts to available network according to optimal network ordering strategy, and puts available network set RAT={RAT according to the order of sequence 1, RAT 2..., RAT k;
Step 2: utilize the available network set in step 1, according to network resource status information and service rate, MRRM performs Large Copacity business decision criteria, judge whether the business transmitted belongs to the High rate and large capacity transport service needing to carry out the concurrent power save transmission of Multi net voting, if so, then perform step 3, start the concurrent power save transmission of descending Multi net voting, if not, then use single network transfer method to carry out business transmission, power save transmission method terminates;
Step 3:MRRM, according to descending optimal network selection strategy, selectes the wireless-transmission network needing to participate in the concurrent power save transmission of Multi net voting, juxtaposition selected network set RAT from available network set RAT *={ RAT 1, RAT 2..., RAT m;
Step 4: utilize optimal transmission collection of network RAT selected in step 3 *, MRRM according to descending optimal transmission rate allocation algorithm, calculate downlink transfer power consumption minimum time, the optimal transmission speed of each selected network
Step 5: utilize the optimal transmission speed R calculated in step 4 *, MRRM calculates optimum service distributing ratio Φ={ φ that each network carries 1, φ 2..., φ m, and according to this ratio, traffic packets is branched to map network and transmit.
2. the descending power save transmission method of a kind of multiple access heterogeneous network according to claim 1, it is characterized in that, multiple access heterogeneous network refers to have multiple different systems wireless networks coexist and the common heterogeneous wireless network covered simultaneously, and wherein the wireless network of different systems comprises 2G, 3G, 4G cellular network, WIFI network.
3. the descending power save transmission method of a kind of multiple access heterogeneous network according to claim 2, it is characterized in that, the concurrent power save transmission of Multi net voting refers to the Radio Access Network of multiple different systems to be considered as multiple parallel transmission channel, by traffic packets parallel transmission on multiple network, namely use the transfer resource of multiple heterogeneous networks to serve for user simultaneously.
4. the descending power save transmission method of a kind of multiple access heterogeneous network according to claim 1, is characterized in that, MRRM refers to the network element entity that simultaneously can manage different networks resource, and MUE refers to the terminal equipment simultaneously possessing plurality of wireless networks access capability.
5. the descending power save transmission method of a kind of multiple access heterogeneous network according to claim 1, it is characterized in that, in step 1, MRRM and MUE negotiations process mainly comprises MUE and reports available wireless communication status, and wireless communication status comprises the wireless network kind of support, uses RAT irepresent, total K available network, the resource state information that each available network is corresponding, comprises the kind of information, available volume of resources B iwith channel power gain g i.
6. the descending power save transmission method of a kind of multiple access heterogeneous network according to claim 5, it is characterized in that, optimal network ordering strategy described in step 1, refer to minimize access point downlink transfer total power consumption for target, the optimal selection order of corresponding available network, specific strategy is: if RAT icorresponding channel power gain g ibe greater than RAT jcorresponding channel power gain g j, i.e. g i> g j, then RAT irAT will be had precedence over jused, network arranges according to the descending of its channel power gain, RAT={RAT 1, RAT 2..., RAT krepresent according to the available network set after channel power gain descending, i.e. g 1< g 2< ... < g k.
7. the descending power save transmission method of a kind of multiple access heterogeneous network according to claim 1, it is characterized in that, Large Copacity business decision criteria in step 2 refers to judge whether the service rate transmitted exceedes the enabling gate limit value needing to enable the concurrent power save transmission of Multi net voting, is specially R req> B 1log 2(g 1/ g 2), namely service rate is greater than enabling gate limit value and then starts to carry out Multi net voting concurrent transmission.
8. the descending power save transmission method of a kind of multiple access heterogeneous network according to claim 7, is characterized in that, the descending optimal network selection strategy in step 3 refers to select the network needing to participate in concurrent transmission, comprises the steps:
Step 3.1: the threshold value set that each available network is set, even represent the set of the threshold value that heterogeneous networks is corresponding, utilize formula (1) to calculate the enabling gate limit value of each network successively
Step 3.2: according to the web portal limit value of step 3.1, (2) formula of utilization calculates RAT successively 1~ RAT k-1the service rate threshold value that network is corresponding order colocation rate threshold value set R reqb = { R 1 reqb , R 2 reqb , . . . , R K reqb } ;
&PartialD; P ( R 1 b ) &PartialD; R 1 = &PartialD; P ( R 2 b ) &PartialD; R 2 = . . . = &PartialD; P ( R i b ) &PartialD; R i = &PartialD; P ( 0 ) &PartialD; R i + 1 R i reqb = &Sigma; j = 1 i R j b - - - ( 2 )
Wherein, represent to R isingle order local derviation;
Step 3.3: according to the result of calculation of step 3.2, by service rate R req, find M, make then a front M network is the optimal network needing to participate in descending concurrent power save transmission, and namely optimal network set is RAT *={ RAT 1, RAT 2..., RAT m, M≤K.
9. the descending power save transmission method of a kind of multiple access heterogeneous network according to claim 8, is characterized in that, the optimal transmission rate allocation algorithm in step 4 refers to for set RAT *in the transmission rate of each network allocation optimum, be specially the optimal rate that utilization (3) formula calculates map network successively the set of juxtaposition optimal rate R * = { R 1 * , R 2 * , . . . , R M * } ;
10. the descending power save transmission method of a kind of multiple access heterogeneous network according to claim 9, is characterized in that, the optimum service distributing ratio in step 5 refers to utilize set R *in value, (4) formula of utilization calculates the shunt ratio of map network successively, then carry out Multi net voting concurrent transmission according to this ratio and Access Network side apparatus downlink transfer total power consumption can be made minimum;
&phi; i = R i * R req - - - ( 4 ) .
CN201510305875.7A 2015-06-04 2015-06-04 Multi-access heterogeneous network downlink energy-saving transmission method Pending CN104853421A (en)

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Application publication date: 20150819