CN107040941B - A kind of low-and high-frequency fusing wireless cut-in method - Google Patents
A kind of low-and high-frequency fusing wireless cut-in method Download PDFInfo
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- CN107040941B CN107040941B CN201610079606.8A CN201610079606A CN107040941B CN 107040941 B CN107040941 B CN 107040941B CN 201610079606 A CN201610079606 A CN 201610079606A CN 107040941 B CN107040941 B CN 107040941B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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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
This application provides a kind of low-and high-frequency fusing wireless cut-in methods, this method comprises: obtaining the experience distribution of high frequency channel gain and the empirical condition distribution of the low frequency channel gain under each high frequency channel gain condition by the channel gain between cumulative measurement terminal and high frequency base station and low frequency base station；Experience distribution and empirical condition distribution based on acquisition, opportunity and the suitable high frequency base station that link is established with it using low frequency channel gain selection terminal starting high-frequency communication.The technical solution can optimize the determination process for whether using high-frequency link, reduce meaningless the high-frequency communication number of starts and energy consumption.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of low-and high-frequency fusing wireless cut-in method.
Background technique
For the mobile data services flow demand for meeting rapid growth, future mobile communication system needs more frequency spectrum moneys
Source.
6GHz or less frequency range has good channel propagation characteristics, is very suitable to mobile communication application, but current low-frequency range
Frequency resource it is very rare, be difficult to find continuous big bandwidth frequency resource.To meet future mobile communications business need
It asks, needs to make full use of various available frequency resources.6GHz or more possesses a large amount of idle frequency spectrum resource, can be effectively relieved
The situation of future spectrum resource anxiety, therefore high band communication of the work in 6GHz or more also becomes the important of future mobile communications
Development trend.
The system design of 6GHz or more high band communication needs to consider high frequency wireless channel and radio-frequency devices characteristic.One side
Face, high band radio channel path loss is big, and signal diffracting power is poor, and covering power is weak, can not independence networking；Another party
Face, high-frequency radio frequency device efficiency is lower, power consumption is big, and phase noise is larger, needs optimisation technique scheme to adapt to high-frequency element
Demand.Especially, the channel width of high band communication is up to hundreds of MHz, even 1GHz or more, and the base of existing 4G mobile communication
Quasi- bandwidth only has 20MHz, and when using identical traffic technology, the power consumption of high band communication may high decades of times.
Since channel propagation conditions are poor, high frequency communication system needs and the stronger low frequency system network interworking of covering power
Just it is able to achieve seamless coverage.In order to reduce the power consumption of high-frequency communication, when not having business, High Frequency Link should be made as far as possible
Road is in close state, and when there is business to need to transmit by high-frequency link, then opens high-frequency communication link.
In order to overcome higher path loss, terminal and high frequency base station may be needed using beamforming technique come the company of foundation
Connect, the two, which may need to scan all directions, can allow wave beam successful match, this process can consume many energy and
Time.However, even with beamforming technique, high-frequency communication also can only covering part region, terminal opens high-frequency communication mould
It may not be able to be successfully established high-frequency link after block, to generate unnecessary transmission time and power overhead.
Summary of the invention
In view of this, the application provides a kind of low-and high-frequency fusing wireless cut-in method, it can optimize and whether use High Frequency Link
The determination process on road reduces meaningless the high-frequency communication number of starts and energy consumption.
In order to solve the above technical problems, the technical solution of the application is achieved in that
A kind of low-and high-frequency fusing wireless cut-in method, this method comprises:
Terminal measurement and the channel gain between high frequency base station and low frequency base station, calculate the warp of each high frequency channel gain
Distribution is tested, and the empirical condition distribution of the low frequency channel gain under each high frequency channel gain condition, and is reported to base station；
Wherein, the channel gain between terminal and high frequency base station is high frequency channel gain；Channel gain between terminal and low frequency base station
For low frequency channel gain；
Network side equipment receives the experience distribution for each high frequency channel gain that each terminal reports, and believes in each high frequency
The empirical condition of low frequency channel gain under road gain condition is distributed, and the distribution of corresponding different terminals is merged, then will
Experience distribution and empirical condition distribution after merging are stored；
When high-frequency link is in unusable state, and has business to need to transmit by high-frequency link, terminal measurement with
Channel gain between low frequency base station；And the mark of the channel gain measured and corresponding low frequency base station is passed through into low frequency
Link is reported to network side equipment；
Network side equipment receives low frequency channel gain and corresponding low frequency base station between the terminal and low frequency base station
Mark when, according to the channel gain between the mark and the terminal and low frequency base station of the low frequency base station, find and connect
There are the high frequency base stations that empirical condition is distributed for the low frequency channel gain received, and use the warp of each high frequency channel gain found
Distribution is tested, and the empirical condition distribution of the low frequency channel gain under each high frequency channel gain condition, calculating are receiving
Low frequency channel gain condition under each high frequency channel gain Posterior distrbutionp；According to Posterior distrbutionp calculated, and it is default
Rule judges whether using high-frequency link；If it is determined that using high-frequency link, it is determined that height needed for high-frequency link to be used
Frequency base station, and the terminal is in available mode to the high-frequency link between determining high frequency base station.
As can be seen from the above technical solution, by between cumulative measurement terminal and high frequency base station and low frequency base station in the application
Channel gain obtains the warp of the experience distribution and the low frequency channel gain under each high frequency channel gain condition of high frequency channel gain
Test condition distribution；Experience distribution and empirical condition distribution based on acquisition are started high using low frequency channel gain selection terminal
The opportunity of frequency communication and the suitable high frequency base station that link is established with it.The technical solution can optimize whether use high-frequency link
Determination process, reduce meaningless the high-frequency communication number of starts and energy consumption.
Detailed description of the invention
Fig. 1 is low-and high-frequency fusing wireless cut-in method flow diagram in the embodiment of the present application.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and examples,
Technical solution of the present invention is described in detail.
A kind of low-and high-frequency fusing wireless cut-in method is provided in the embodiment of the present application, passes through cumulative measurement terminal and high frequency base
Stand and low frequency base station between channel gain, obtain high frequency channel gain experience distribution and under each high frequency channel gain condition
The empirical condition of low frequency channel gain is distributed；Experience distribution and empirical condition distribution based on acquisition, are increased using low frequency channel
The opportunity of benefit selection terminal starting high-frequency communication and the suitable high frequency base station that link is established with it.The technical solution can optimize
The determination process for whether using high-frequency link, reduces meaningless the high-frequency communication number of starts and energy consumption.
Low frequency signal propagation characteristic is good, and low frequency base station can provide a wide range of covering for user；High-frequency signal propagation characteristic
Difference, high frequency base station range is small, can only provide service in some areas.Since high-frequency communication is easy to be blocked by barrier
It interrupts, in order to guarantee that seamless service is experienced, the coverage area of low frequency base station generally all can include the coverage area of high frequency base station.Eventually
End generally can be received by 1 transmitting signal even more than low frequency base station in the region that can receive high frequency base station signal.
If the statistical correlation characteristic being able to know that between low frequency channel gain and high frequency channel gain, so that it may utilize survey
The low frequency channel gain measured speculates high frequency channel gain profiles and possible value.
For convenience, the channel gain between terminal and low frequency base station is hereinafter referred to as low frequency channel gain,
Channel gain between terminal and high frequency base station is referred to as high frequency channel gain.
The technical scheme provided by the application includes two processes, a process is the tired of low-and high-frequency channel gain experience distribution
Product process；Another process is low frequency auxiliary high frequency link establishment process.
The accumulation of low-and high-frequency channel gain experience distribution is provided first, specific as follows:
Terminal measurement and the channel gain between high frequency base station and low frequency base station.
In specific implementation, terminal can be notified to count the experience distribution of high and low frequency channel gain for network side equipment
When, terminal just starts measurement and the channel gain between high frequency base station and low frequency base station；It is also possible to terminal be pre-configured with
Set time or period measurement and high frequency base station and low frequency base station between channel gain.
Terminal calculates the experience distribution of each high frequency channel gain measured, and under each high frequency channel gain condition
Low frequency channel gain empirical condition distribution, and be reported to base station.
Network side equipment receives the experience distribution for each high frequency channel gain that each terminal reports, and believes in each high frequency
The empirical condition of low frequency channel gain under road gain condition is distributed, and the distribution of corresponding different terminals is merged, then will
Experience distribution and empirical condition distribution after merging are stored.Network side equipment can accumulate the reporting information by terminal of certain time
The distribution of corresponding different terminals is merged and stored again later.
The warp for the low frequency channel gain that form stores under each high frequency channel gain condition can be used in network side equipment
Test the mode of condition distribution.Referring to table 1, table 1 is the low frequency base station 2 under the corresponding high frequency channel gain condition in high frequency base station 1
The empirical condition of low frequency channel gain is distributed P (h2|H1) content to be stored.
Table 1
It should be noted that actual channel gain is all successive value, in order to simplify operation and reduce memory space, need
Channel gain is quantified, to form discrete value range.In table 1, G1,…,GLIndicate H1Value range,
g1,…,gKIt is h2Value range.In order to be further simplified operation, same group of discrete value unified representation low frequency base station letter can be used
Road gain value range and another set discrete value unified representation high frequency channel gain value range.
In specific implementation, network side equipment merges the distribution of corresponding different terminals, then by the experience after merging
Distribution and empirical condition distribution are stored after being handled as follows:
Network side equipment is according to each height stored in the experience distribution and empirical condition distribution and preset time after merging
The experience of frequency channel gain is distributed, and the empirical condition distribution of the low frequency channel gain under each high frequency channel gain condition,
The experience distribution of current each high frequency channel gain is determined by weighted mean method, and under each high frequency channel gain condition
The empirical condition of low frequency channel gain is distributed.
Using weighted value can be configured when weighted mean method according to the timeliness of measurement result, such as by newly generated experience point
The weighted value configuration of cloth and empirical condition distribution it is relatively large, the distribution of generation time longer experience and empirical condition are distributed
Weighted value configuration it is relatively small.
Network side equipment (can will be such as divided into according to the granularity of half an hour, 1 hour or 2 hours more daily with time segment
A period) it is distributed to count the experience distribution and empirical condition, preferably to match channel statistical in different time periods
Characteristic.When using weighted mean method, the experience obtained in the past in the same period can be distributed to the power with empirical condition distribution
Weight values configure relatively high, and the weighted value of experience distribution and empirical condition distribution that other times section obtains can be relatively
It is low.
The comprehensive each terminal information reported of network side equipment and the information accumulated early period in this way, form more perfect height
The distribution of frequency channel gain experience, and the empirical condition distribution of the low frequency channel gain under each high frequency channel gain condition.
In addition, whole network coverage area can be divided into several blocks, if terminal can when measuring channel gain
Obtain the current location information of terminal, then can be counted respectively as unit of block above-mentioned experience distribution and empirical condition distribution and on
Network is reported, network can integrate the information that each terminal reports and form the experience distribution and empirical condition point for being more suitable for each block
Cloth.
If there are empirical conditions between some high frequency channel gain and some low frequency channel gain in the embodiment of the present application
Then there is covering intersection between corresponding high frequency base station and low frequency base station in distribution.
With reference to the accompanying drawing, low frequency auxiliary high frequency link establishment process is described in detail.
It is low-and high-frequency fusing wireless cut-in method flow diagram in the embodiment of the present application referring to Fig. 1, Fig. 1.Specific steps
Are as follows:
When this step medium-high frequency link is in down state, which is in the state that do not set up, or in not
Dormancy state.It is specifically related according to how to save high-frequency link resource consumption in practical application in which kind of state.
Step 102, network side equipment receives low frequency channel gain between the terminal and low frequency base station and corresponding
When the mark of low frequency base station, according to the channel gain between the mark and the terminal and low frequency base station of the low frequency base station, look into
There are the high frequency base stations that empirical condition is distributed for the low frequency channel gain found and received.
By preserving type above, warp relevant to the low frequency base station can be quickly found out using the mark of low frequency base station
Test condition distribution and corresponding empirical condition distribution in which relevant high frequency base station be related to, so as to find with
There are the high frequency base stations that empirical condition is distributed for the low frequency channel gain received.
It is distributed in this step using the experience of each high frequency channel gain found, and in each high frequency channel gain item
The empirical condition of low frequency channel gain under part is distributed, and calculates each high frequency channel under the low frequency channel gain condition received
The Posterior distrbutionp of gain, comprising:
In the N number of low frequency channel gain h received1,...,hNUnder the conditions of m-th of high frequency channel gain Posterior distrbutionp are as follows:
Wherein,
HmFor the channel gain of m-th of the high frequency base station found, m
=1,2 ..., M, M be the high frequency number of base stations found, P (Hm) divide for the experience of m-th of the high frequency channel gain found
Cloth, n=1,2 ..., N, N are the number of the corresponding low frequency base station of low frequency channel gain received, hnFor n-th received
The channel gain of low frequency base station, P (hn|Hm) be under m-th of high frequency channel gain n-th of low frequency channel gain empirical condition
Distribution.
During low frequency auxiliary high frequency link establishment, used experience distribution and empirical condition distribution refer in height
Experience distribution and empirical condition distribution during frequency channel gain experience profile accumulation after obtained newest merging, or
Obtained newest experience distribution is distributed with empirical condition after being weighted average treatment.
Three kinds of preset rules are provided in the embodiment of the present application to determine whether difference is as follows using high-frequency link:
The first, it is described according to posteriority calculated point when the preset rules are cumulative maximum posterior probability criterion
Cloth and preset rules judge whether using high-frequency link；If it is determined that using high-frequency link, it is determined that High Frequency Link to be used
High frequency base station needed for road, comprising:
Network side equipment is according to the channel gain between each high frequency base station that Posterior distrbutionp calculates the terminal and is found
Cumulative probability when not less than minimum channel gain needed for establishing high-frequency link, if maximum cumulative probability is not less than pre-
If the probability for being successfully established high-frequency link, it is determined that use high-frequency link, and the corresponding base station of maximum cumulative probability will be worth
It is determined as high frequency base station needed for establishing high-frequency link.
Such as using the judgement of following formula currently if appropriate for using high-frequency link:
If above formula is set up, then it is assumed that it is current to be suitble to use high-frequency link, and select to be suitble to the high-frequency link used corresponding
High frequency base station mark k=arg maxm(P(Hm≥H0|h1,...,hN)), then notify terminal and high frequency base station k to make its it
Between high-frequency link be in available mode；If above formula is invalid, then it is assumed that currently be not suitable for communicating using high-frequency link.
If the value of σ is higher, it is more difficult to suitable high-frequency link is selected, but once it is determined that using high-frequency link, then
The probability for making the high-frequency link be in available mode is higher；If the value of σ is lower, it is easier to determine using high-frequency link, but
It is that the probability that makes the high-frequency link be in available mode is lower.It in practice, can be according to portfolio, power consumption of terminal etc. because usually selecting
Configure suitable σ.
It is second, described according to Posterior distrbutionp calculated when the preset rules are maximum posteriori criterion, with
And preset rules judge whether using high-frequency link；If it is determined that using high-frequency link, it is determined that high-frequency link institute to be used
The high frequency base station needed, comprising:
Network side equipment is directed to each high frequency base station found, the corresponding high frequency base station of the maximum posterior probability of selective value
Channel gain, if the maximum channel gain of its intermediate value be greater than establish high-frequency link needed for minimum channel gain, it is determined that make
With high-frequency link, and the corresponding high frequency base station of the channel gain is determined as high frequency base station needed for establishing high-frequency link.
Such as using the judgement of following formula currently if appropriate for using high-frequency link:
Wherein,
If above formula is set up, then it is assumed that high-frequency link currently can be used, and select to be suitble to the high-frequency link used corresponding
High frequency base station mark
Then terminal and high frequency base station k is notified to be in the high-frequency link between it
Available mode；If above formula is invalid, then it is assumed that currently be not suitable for communicating using high-frequency link.
The third, it is described according to Posterior distrbutionp calculated when the preset rules are Largest Mean criterion and pre-
If rule judges whether using high-frequency link；If it is determined that using high-frequency link, it is determined that needed for high-frequency link to be used
High frequency base station, comprising:
Network side equipment calculates the equal of the channel gain of each high frequency base station found according to calculated Posterior distrbutionp
Value, if being worth maximum mean value greater than minimum channel gain needed for establishing high frequency base station, it is determined that use high-frequency link, and will value
The corresponding high frequency base station of maximum mean value is determined as high frequency base station needed for establishing high-frequency link.
Such as using the judgement of following formula currently if appropriate for using high-frequency link:
Wherein,
If above formula is set up, then it is assumed that high-frequency link currently can be used, and select to be suitble to the high-frequency link used corresponding
High frequency base station mark
Then terminal and high frequency base station k is notified to make at the high-frequency link between it
In available mode；If above formula is invalid, then it is assumed that currently be not suitable for communicating using high-frequency link.
In this step, which is in available mode to the high-frequency link between determining high frequency base station, is specifically included:
If the terminal to the high-frequency link between selected high frequency base station be in do not set up state, the terminal arrive this
High-frequency link is established between base station；If the high-frequency link is in a dormant state, the high-frequency link is activated.
If terminal can obtain the current location information of terminal when measuring low frequency channel gain in the embodiment of the present application,
Can be by location information and the low frequency channel measured gain report network simultaneously, the warp of block where the position can be used in network
Distribution (if applicable) is tested to replace not subregional experience distribution, to obtain more accurate court verdict.
If there is emergency occurs, such as: low frequency link can not continue to current business, more than network may not consider
Decision rule directly notifies terminal to attempt to establish communication link with high frequency base station.
In conclusion the application is obtained by the channel gain between cumulative measurement terminal and high frequency base station and low frequency base station
The experience of high frequency channel gain is distributed and the empirical condition distribution of the low frequency channel gain under each high frequency channel gain condition；Base
In the experience distribution and empirical condition distribution of acquisition, the opportunity of low frequency channel gain selection terminal starting high-frequency communication is utilized
And it is suitble to establish the high frequency base station of link with it.The technical solution can optimize the determination process for whether using high-frequency link,
Reduce meaningless the high-frequency communication number of starts and energy consumption.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (7)
1. a kind of low-and high-frequency fusing wireless cut-in method, which is characterized in that this method comprises:
Terminal measurement and the channel gain between high frequency base station and low frequency base station calculate the experience point of each high frequency channel gain
Cloth, and the empirical condition distribution of the low frequency channel gain under each high frequency channel gain condition, and it is reported to base station；Its
In, the channel gain between terminal and high frequency base station is high frequency channel gain；Channel gain between terminal and low frequency base station is
Low frequency channel gain；
Network side equipment receives the experience distribution for each high frequency channel gain that each terminal reports, and increases in each high frequency channel
The empirical condition of low frequency channel gain under the conditions of benefit is distributed, and the distribution of corresponding different terminals is merged, then will be merged
Experience distribution and empirical condition distribution afterwards is stored；
When high-frequency link is in unusable state, and has business to need to transmit by high-frequency link, terminal measurement and low frequency
Channel gain between base station；And the mark of the channel gain measured and corresponding low frequency base station is passed through into low frequency link
It is reported to network side equipment；
Network side equipment receives the low frequency channel gain between the terminal and low frequency base station and the mark of corresponding low frequency base station
When knowledge, according to the channel gain between the mark and the terminal and low frequency base station of the low frequency base station, finds and receive
Low frequency channel gain there are the high frequency base station that empirical condition is distributed, and use the experience of each high frequency channel gain found point
Cloth, and the empirical condition distribution of the low frequency channel gain under each high frequency channel gain condition, calculate low what is received
The Posterior distrbutionp of each high frequency channel gain under the conditions of frequency channel gain；According to Posterior distrbutionp calculated and preset rules
Judge whether using high-frequency link；If it is determined that using high-frequency link, it is determined that high frequency base needed for high-frequency link to be used
It stands, and the terminal is in available mode to the high-frequency link between determining high frequency base station；
Wherein, the preset rules are as follows: cumulative maximum posterior probability criterion, maximum posteriori criterion or Largest Mean criterion.
2. the method according to claim 1, wherein the distribution by corresponding different terminals merges, then
It is stored after experience distribution after merging is handled as follows with empirical condition distribution:
Network side equipment is believed according to each high frequency stored in the experience distribution and empirical condition distribution and preset time after merging
The experience of road gain is distributed, and the empirical condition distribution of the low frequency channel gain under each high frequency channel gain condition, is passed through
Weighted mean method determines the experience distribution of current each high frequency channel gain, and the low frequency under each high frequency channel gain condition
The empirical condition of channel gain is distributed.
3. the method according to claim 1, wherein
When the high-frequency link is in down state, which is in and does not set up state, or in a dormant state；
It is described that the terminal is in available mode to the high-frequency link between determining high frequency base station, comprising: if the terminal is to institute
High-frequency link between the high frequency base station of selection, which is in, does not set up state, then establishes High Frequency Link between the base station in the terminal
Road；If the high-frequency link is in a dormant state, the high-frequency link is activated.
4. the method according to claim 1, wherein the experience using each high frequency channel gain found
Distribution, and the empirical condition distribution of low frequency channel gain under each high frequency channel gain condition are calculated and are being received
The Posterior distrbutionp of each high frequency channel gain under low frequency channel gain condition, comprising:
In the N number of low frequency channel gain h received1,...,hNUnder the conditions of m-th of high frequency channel gain Posterior distrbutionp are as follows:
Wherein,HmFor the channel gain of m-th of the high frequency base station found, m=1,
2 ..., M, M are the high frequency number of base stations found, P (Hm) be distributed for the experience of m-th of the high frequency channel gain found, n
=1,2 ..., N, N be the corresponding low frequency base station of low frequency channel gain received number, hnFor n-th of the low frequency received
The channel gain of base station, P (hn|Hm) be distributed for the empirical condition of n-th of low frequency channel gain under m-th of high frequency channel gain.
5. method according to any of claims 1-4, which is characterized in that
It is described according to Posterior distrbutionp calculated when the preset rules are cumulative maximum posterior probability criterion and default
Rule judges whether using high-frequency link；If it is determined that using high-frequency link, it is determined that height needed for high-frequency link to be used
Frequency base station, comprising:
It is not less than according to the channel gain between each high frequency base station that Posterior distrbutionp calculates the terminal and is found and establishes high frequency
Cumulative probability needed for link when minimum channel gain, if maximum cumulative probability is successfully established height not less than preset
The probability of frequency link, it is determined that use high-frequency link, and the corresponding base station of maximum cumulative probability will be worth and be determined as establishing high frequency
High frequency base station needed for link.
6. method according to any of claims 1-4, which is characterized in that
It is described according to Posterior distrbutionp calculated and preset rules when the preset rules are maximum posteriori criterion
Judge whether using high-frequency link；If it is determined that using high-frequency link, it is determined that high frequency base needed for high-frequency link to be used
It stands, comprising:
For each high frequency base station found, the channel gain of the corresponding high frequency base station of the maximum posterior probability of selective value, if
The maximum channel gain of its intermediate value is greater than minimum channel gain needed for establishing high-frequency link, it is determined that high-frequency link is used, and
The corresponding high frequency base station of the channel gain is determined as high frequency base station needed for establishing high-frequency link.
7. method according to any of claims 1-4, which is characterized in that
It is described to be judged according to Posterior distrbutionp calculated and preset rules when the preset rules are Largest Mean criterion
Whether high-frequency link is used；If it is determined that using high-frequency link, it is determined that high frequency base station needed for high-frequency link to be used, packet
It includes:
The mean value of the channel gain of each high frequency base station found is calculated according to calculated Posterior distrbutionp, if value is maximum
Value is greater than minimum channel gain needed for establishing high frequency base station, it is determined that uses high-frequency link, and it is corresponding to be worth maximum mean value
High frequency base station be determined as high frequency base station needed for establishing high-frequency link.
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