CN106332185A - Method for selecting transmission rate in cooperative diversity - Google Patents
Method for selecting transmission rate in cooperative diversity Download PDFInfo
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- CN106332185A CN106332185A CN201510387946.2A CN201510387946A CN106332185A CN 106332185 A CN106332185 A CN 106332185A CN 201510387946 A CN201510387946 A CN 201510387946A CN 106332185 A CN106332185 A CN 106332185A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/22—Negotiating communication rate
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention provides a method for selecting a transmission rate in cooperative diversity. The method comprises the following steps: calculating reachable node ranges of given hop counts corresponding to different transmission rates according to routing information; determining an available transmission rate range according to a sink node of a cooperative diversity task; and selecting the transmission rate according to business demand within the available transmission rate range. By adoption of the method, the current communication rate can be determined according to different scenes and business types, so that the transmission rate of the system is adjustable, and the purpose of guaranteeing the business reliability and achieving the optimal business performance is achieved by using different rate selection strategies.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to the selecting party of transfer rate in a kind of collaboration diversity
Method.
Background technology
In wireless network, when information source node needs the multiple information destination node beyond multi-hop to initiate business, one
Planting common method is to carry out business transmission with the form of broadcast, namely forms multi-hop flooding broadcast.Due to many
Jumping in flooding broadcast, information source node selects traffic rate, and the message received is not modified by via node,
Former state forwards, and being therefore equivalent to information source node, to need to select often to jump communication in whole broadcasting process common
Traffic rate.Therefore, the typical way of broadcast flooding is to use fixing low order MCS, low by choosing
Rank MCS improves the reliability of business transmission during the broadcast communication of feedback-less, and fixing by using
Value reduces the complexity receiving parsing broadcast.
In multi-hop flooding broadcast communication, choose fixing low order MCS be typically for examining in terms of reliability
Considering, owing to there is not feedback mechanism in broadcast communication, choosing low order MCS can be in bigger channel matter
The Successful transmissions of broadcast is ensured in amount fluctuation range.But use fixed value to lack motility, it is impossible to according to
Channel quality adjusts traffic rate in real time, can cause waist performance in most cases.
In cooperative diversity technique, information source node sends service message with the character of broadcast or multicast, receives business
The via node of message forwards on identical resource location, the message content of forwarding and disappearing of receiving
Breath content identical, and can forward time additional random phase contrast.Receiving node receives multiple via node
The identical message having random phase difference forwarded, forms superposition on power, and obtains space diversity gain,
Have more higher reliability than broadcasting service.Therefore, the ripple of actual accessible transfer rate in collaboration diversity
Dynamic scope is bigger than broadcasting service, if using fixing low order MCS in collaboration diversity scheme, will cause
The performance loss become apparent from.
Summary of the invention
For the problems referred to above, the present invention proposes the system of selection of transfer rate in a kind of collaboration diversity, including such as
Lower step: according to routing iinformation calculate under given jumping figure corresponding to different transmission rates up to range of nodes；
Information destination node according to described collaboration diversity business determines available transmission rate scope；In described available transmission speed
In the range of rate, select transfer rate according to business demand.
Further, the described information destination node according to described collaboration diversity business determines available transmission rate scope
Specifically include: if described business has fixing information destination node, then can receive according to described information destination node
Service message determines available transmission rate scope；If described business is without fixing information destination node, then it is assumed that institute
The transfer rate having existence is available transmission rate.
Further, described business demand include service transmission rate, business throughput, Service coverage,
Service reliability or its combination in any.
Further, described according to business demand select transfer rate include: business need maximize transmission speed
During rate, select the peak in the range of available transmission rate；When business need maximizes handling capacity, according to respectively
Available transmission rate calculates with the number of correspondingly received node, selects the transmission speed that maximum throughput is corresponding
Rate；When business need strengthens coverage, the biography of coverage enhancement in the range of selecting available transmission rate, can be met
Defeated rate value；During business need high reliability, in the range of selecting available transmission rate, reliability requirement can be met
Transmission rate value.
Further, in the case of system is the pre-configured a series of transmission rate value of node, described according to industry
Business demand selects transfer rate in the range of: described available transmission rate scope and described pre-configured transmission speed
The common factor of rate value.
Further, described method is performed by information source node and/or network scheduling node.
Further, described method also includes: the information source node of described business uses the transfer rate selected,
Use sends service message in the way of collaboration diversity or speed training message is trained；In all/part
Continue node and information destination node is received condition feedback；Described information source node adjusts speed instruction according to feedback result
Experienced transfer rate also repeats said process, or terminate described training and determine the transfer rate of business.
Further, the termination condition of described speed training includes the combination of following any one or more: reach
To maximum frequency of training/training time；Feedback result shows that transmission performance meets business demand；Instruct several times
Practice the transmission rate value used or transmission performance occurs more than the reverse of given threshold value and increases；Feed back knot several times
Fruit shows that the fluctuation range of transmission performance is less than given threshold value.
Further, when described reception situation is fed back by part of nodes, described part of nodes is by following
The combination of any one or more mode determines: determines at random, determined by nodal community, by information source node
Specify, specified by the business form or high-rise configuration, determined by business jumping figure, by the reception power of receiving node
Determine, determined by the reception probability of success of receiving node.
Further, the triggering mode of described speed training includes that following any one or more combines: the cycle
Property perform；Triggered by business and perform before this business starts or in business transmitting procedure；By high level configuration/
Scheduling node controls message trigger and performs；Performed by exceeding a certain degree of scenario parameters change triggers.
The method can determine the speed of present communications according to different scenes and type of service etc., makes system transfers
Speed is adjustable, and by using different speed selection strategyes, it is achieved ensure service reliability, reach business
The purposes such as Performance optimization.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, retouch below
Accompanying drawing in stating is some embodiments of the present invention, for those of ordinary skill in the art, is not paying
On the premise of creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the FB(flow block) of the transfer rate system of selection that the present invention proposes；
Fig. 2 is the node topology structural representation of the embodiment of the present invention one and embodiment two；
Fig. 3 is the embodiment of the present invention one available path list；
Fig. 4 be under the embodiment of the present invention one different rates given jumping figure up to node listing；
Given jumping figure up to joint under the different rates that Fig. 5 is the embodiment of the present invention one to be determined according to business demand
Point list；
Fig. 6 be under the embodiment of the present invention two different rates given jumping figure up to node listing；
Fig. 7 is the speed used in the training of the embodiment of the present invention two speed and feedback list.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the present invention
Accompanying drawing in embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention, it is clear that
Described embodiment is a part of embodiment of the present invention rather than whole embodiments；It should be noted that
In the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise
Every other embodiment, broadly fall into the scope of protection of the invention.
Propose the system of selection of transfer rate in a kind of collaboration diversity in an embodiment of the present invention, refer to figure
1, comprise the steps: according to routing iinformation calculate under given jumping figure corresponding to different transmission rates up to
Range of nodes；Information destination node according to described collaboration diversity business determines available transmission rate scope；Described
In the range of available transmission rate, select transfer rate according to business demand.
The above-mentioned speed that can determine present communications according to different scenes and type of service etc., makes system transfers speed
Rate is adjustable, and by using different speed selection strategyes, it is achieved ensure service reliability, reach business
The purposes such as energy optimization.
In one alternate embodiment, available transmission speed is determined according to the information destination node of described collaboration diversity business
Rate scope specifically includes: if described business has fixing information destination node, then according to described information destination node energy
No reception service message determines available transmission rate scope；If described business is without fixing information destination node, then
Think that the transfer rate of all existence is available transmission rate.
In one alternate embodiment, business demand includes that service transmission rate, business throughput, business are covered
Lid scope, service reliability or its combination in any.
In one alternate embodiment, transfer rate is selected to include according to business demand: business need maximizes
During transfer rate, select the peak in the range of available transmission rate；When business need maximizes handling capacity,
Number according to each available transmission rate with correspondingly received node calculates, and selects maximum throughput corresponding
Transfer rate；When business need strengthens coverage, covering can be met in the range of selecting available transmission rate and increase
Strong transmission rate value；During business need high reliability, can meet reliable in the range of selecting available transmission rate
The transmission rate value of sexual demand.
In one alternate embodiment, in the case of system is the pre-configured a series of transmission rate value of node,
Described select transfer rate in the range of: described available transmission rate scope and described prewired according to business demand
The common factor of the transmission rate value put.
In one alternate embodiment, described method is performed by information source node and/or network scheduling node.
In one alternate embodiment, also include: the information source node of described business uses the transfer rate selected,
Use sends service message in the way of collaboration diversity or speed training message is trained；In all/part
Continue node and information destination node is received condition feedback；Described information source node adjusts speed instruction according to feedback result
Experienced transfer rate also repeats said process, or terminate described training and determine the transfer rate of business.
In one alternate embodiment, the termination condition of speed training includes the group of following any one or more
Close: reach maximum frequency of training/training time；Feedback result shows that transmission performance meets business demand；If
The transmission rate value of dry training employing or transmission performance occur more than the reverse growth of given threshold value；Several times
Feedback result shows that the fluctuation range of transmission performance is less than given threshold value.
In one alternate embodiment, when reception situation is fed back by part of nodes, described part of nodes leads to
The combination crossing following any one or more mode determines: determines at random, determined (such as joint by nodal community
Point is for via node or information destination node etc.), specified by information source node, referred to by the business form or high-rise configuration
Fixed, determined by business jumping figure, received power decision, general by the reception success of receiving node by receiving node
Rate determines.
In one alternate embodiment, the triggering mode of speed training includes following any one or more group
Close: periodically perform；Triggered by business and perform before this business starts or in business transmitting procedure；By height
Layer configuration/scheduling node controls message trigger and performs；Held by exceeding a certain degree of scenario parameters change triggers
OK.
Embodiment one
The topological diagram used in this embodiment is as shown in Figure 2.Node S is information source node, according to routing iinformation,
All available paths such as Fig. 3 in obtaining region.
Channel parameter according to jumping each in every paths, it is assumed that following business wanting in terms of service reliability
Ask as BLER < x%, calculate according to this demand S that collaboration diversity under different transmission rates is given jumps
Number up to node such as Fig. 4.
According to business demand, determine the transfer rate of business, specific as follows:
One information destination node of node S transport is the business of D1 and D2, and business demand passes for maximizing
Defeated speed: determine that available transmission rate scope is 0～r2 according to information destination node, finally determines that transfer rate is
r2。
One information destination node of node S transport is the business of R1, R2, D1 and D2, and business demand is
Maximize transfer rate: determine that available transmission rate scope is 0～r1 according to information destination node, finally determine transmission
Speed is r1.
Node S transport one is without the business of fixing information destination node, and business demand is that maximization network is handled up
Amount: think that all transfer rates can be used, according to the receiving node scope that different transmission rates is corresponding, calculate
Go out 3*r2 > 4*r1 > max > 2*r3, finally determine that transfer rate is r2.
Assuming that the requirement in terms of following service needed high reliability, service reliability is BLER < y% (y
< x), according to this demand nodes S calculate under under different transmission rates, collaboration diversity gives jumping figure up to
Node such as Fig. 5.
One information destination node of node S transport is the business of D1 and D2, and business demand is high reliability, with
Afterwards for maximizing transfer rate: determine that available transmission rate scope is 0～0.6*r2 according to information destination node, finally
Determine that transfer rate is 0.6*r2.
In this embodiment, system can also be the pre-configured a series of available transmission rate value of node, now
Information source node S is after determining above-mentioned transfer rate, it is also possible in the described above-mentioned transfer rate determined with pre-
The common factor of the transmission rate value of configuration finally determines the transfer rate of business.
Embodiment two
The topological diagram used in this embodiment is as shown in Figure 2.Node S is information source node, needs to send one
The business that information destination node is D1 and D2, reliability requirement is BLER < 0.1%.
Node S first according to routing iinformation and channel parameter, calculate under different transmission rates collaboration diversity to
Determine under jumping figure up to node such as Fig. 6.
It is 2.2Mbps that node S calculates the transfer rate that should use, and triggers speed training process.Assuming that should
During:
Relaying and the information destination node standard that carries out feeding back are all relayings and information destination node is fed back；
Feedback content is for receiving BLER, and business need receives BLER < 0.1%；
Training terminates to be designated the training message transmission rate used the 2nd time to be occurred not less than 0.1Mbps
Reversely increase after, transmission performance meets business demand and the most continuous 3 feedback result show information destination node
Receive BLER fluctuation range < 0.005%.
The transmission rate value that node S uses during speed is trained and the feedback such as Fig. 7 obtained.
After node S completes speed training, according to training result, selection actual transfer rate is 2.18Mbps.
By above-described embodiment it can be seen that the present invention makes node use cooperative diversity technique to carry out business transmission
In time, can transmit fast according to material elements optimized business of selection such as type of service, scenario parameters, transmission results
Rate, adds the configuration flexibility of collaboration diversity, improves systematic function.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can
Completing with the hardware relevant by programmed instruction, aforesaid program can be stored in an embodied on computer readable and deposit
In storage media, this program upon execution, performs to include the step of said method embodiment；And aforesaid storage
Medium includes: the various media that can store program code such as ROM, RAM, magnetic disc or CD.
Last it is noted that above example is only in order to illustrate technical scheme, rather than it is limited
System；Although the present invention being described in detail with reference to previous embodiment, those of ordinary skill in the art
It is understood that the technical scheme described in foregoing embodiments still can be modified by it, or to it
Middle part technical characteristic carries out equivalent；And these amendments or replacement, do not make appropriate technical solution
Essence departs from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. the system of selection of transfer rate in a collaboration diversity, it is characterised in that comprise the steps:
According to routing iinformation calculate under given jumping figure corresponding to different transmission rates up to range of nodes；
Information destination node according to described collaboration diversity business determines available transmission rate scope；
In the range of described available transmission rate, select transfer rate according to business demand.
Method the most according to claim 1, it is characterised in that described according to described collaboration diversity industry
The information destination node of business determines that available transmission rate scope specifically includes:
If described business has fixing information destination node, then can receive business according to described information destination node and disappear
Breath determines available transmission rate scope；
If described business is without fixing information destination node, then it is assumed that the transfer rate of all existence is available biography
Defeated speed.
Method the most according to claim 1, it is characterised in that described business demand includes that business passes
Defeated speed, business throughput, Service coverage, service reliability or its combination in any.
Method the most according to claim 3, it is characterised in that described according to business demand selection biography
Defeated speed includes:
When business need maximizes transfer rate, select the peak in the range of available transmission rate；
When business need maximizes handling capacity, enter according to the number of each available transmission rate with correspondingly received node
Row calculates, and selects the transfer rate that maximum throughput is corresponding；
When business need strengthens coverage, the biography of coverage enhancement in the range of selecting available transmission rate, can be met
Defeated rate value；
During business need high reliability, the transmission of reliability requirement in the range of selecting available transmission rate, can be met
Rate value.
Method the most according to claim 1, it is characterised in that be that node pre-configured is in system
In the case of row transmission rate value, described according to business demand select transfer rate in the range of: described available
Transfer rate scope and the common factor of described pre-configured transmission rate value.
6. according to the method described in Claims 1 to 5 any one, it is characterised in that described method is by believing
Source node and/or network scheduling node perform.
Method the most according to claim 6, it is characterised in that described method also includes:
The information source node of described business uses the transfer rate selected, and uses and sends industry in the way of collaboration diversity
Business message or speed training message are trained；
All/part via node and information destination node are received condition feedback；
Described information source node adjusts the transfer rate of speed training according to feedback result and repeats said process, or
Terminate described training and determine the transfer rate of business.
Method the most according to claim 7, it is characterised in that the termination condition of described speed training
Combination including following any one or more:
Reach maximum frequency of training/training time；
Feedback result shows that transmission performance meets business demand；
Transmission rate value or the transmission performance of training employing several times occur more than the reverse of given threshold value and increase；
Feedback result shows that the fluctuation range of transmission performance is less than given threshold value several times.
Method the most according to claim 7, it is characterised in that described reception situation is by part of nodes
When feeding back, described part of nodes is determined by the combination of following any one or more mode: random
Determine, nodal community determine, information source node specify, specified, by industry by the business form or high-rise configuration
Business jumping figure determines, by the reception power decision of receiving node, by the reception probability of success decision of receiving node.
Method the most according to claim 7, it is characterised in that the triggering mode bag of described speed training
Include following any one or more to combine:
Periodically perform；
Triggered by business and perform before this business starts or in business transmitting procedure；
Controlled message trigger by high level configuration/scheduling node to perform；
Performed by exceeding a certain degree of scenario parameters change triggers.
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| CN201510387946.2A CN106332185A (en) | 2015-07-03 | 2015-07-03 | Method for selecting transmission rate in cooperative diversity |
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| CN201510387946.2A CN106332185A (en) | 2015-07-03 | 2015-07-03 | Method for selecting transmission rate in cooperative diversity |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020181678A1 (en) * | 2001-02-28 | 2002-12-05 | Cheng-Shing Lai | Data transmission method by automatic frequency control |
| CN101931517A (en) * | 2010-08-12 | 2010-12-29 | 中国科学技术大学 | Hybrid automatic repeat request-based self-adapting relay and velocity selection method |
| CN102970714A (en) * | 2012-12-14 | 2013-03-13 | 北京邮电大学 | Flow rate distribution method and device of cognitive wireless self-organizing network multipath routing |
| CN103179517A (en) * | 2013-02-01 | 2013-06-26 | 清华大学 | Wireless multicast method of data center |
| US20140269381A1 (en) * | 2013-03-18 | 2014-09-18 | Samsung Electronics Co., Ltd. | Methods and devices for allocating resources for communications with base stations |
| CN104618966A (en) * | 2015-01-30 | 2015-05-13 | 南京邮电大学 | Speed rate allocation method under wireless ubiquitous environment based on terminal cooperation |
-
2015
- 2015-07-03 CN CN201510387946.2A patent/CN106332185A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020181678A1 (en) * | 2001-02-28 | 2002-12-05 | Cheng-Shing Lai | Data transmission method by automatic frequency control |
| CN101931517A (en) * | 2010-08-12 | 2010-12-29 | 中国科学技术大学 | Hybrid automatic repeat request-based self-adapting relay and velocity selection method |
| CN102970714A (en) * | 2012-12-14 | 2013-03-13 | 北京邮电大学 | Flow rate distribution method and device of cognitive wireless self-organizing network multipath routing |
| CN103179517A (en) * | 2013-02-01 | 2013-06-26 | 清华大学 | Wireless multicast method of data center |
| US20140269381A1 (en) * | 2013-03-18 | 2014-09-18 | Samsung Electronics Co., Ltd. | Methods and devices for allocating resources for communications with base stations |
| CN104618966A (en) * | 2015-01-30 | 2015-05-13 | 南京邮电大学 | Speed rate allocation method under wireless ubiquitous environment based on terminal cooperation |
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Application publication date: 20170111 |