CN107276698A - A kind of millimeter wave wireless network neighbor finds method and device - Google Patents
A kind of millimeter wave wireless network neighbor finds method and device Download PDFInfo
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- CN107276698A CN107276698A CN201710513790.7A CN201710513790A CN107276698A CN 107276698 A CN107276698 A CN 107276698A CN 201710513790 A CN201710513790 A CN 201710513790A CN 107276698 A CN107276698 A CN 107276698A
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- H—ELECTRICITY
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- H04B17/00—Monitoring; Testing
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- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
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- H—ELECTRICITY
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Abstract
Method and device is found the embodiments of the invention provide a kind of millimeter wave wireless network neighbor, this method is after first object wave beam is listened to, the beacon of the first object wave beam is decoded, if the beacon of the first object wave beam can not be successfully decoded, the channel condition information of the beacon of the first object wave beam is extracted, the channel condition information of the beacon of the first object wave beam is accumulate to spatial channel state information；According to default channel model and the spatial channel state information, optimal estimating signal angle of arrival is obtained；Wave beam monitoring is carried out along the direction of the optimal estimating signal angle of arrival；After the second object beam is listened to, the beacon of second object beam is decoded, wherein, second object beam is：The wave beam supported along the direction of the optimal estimating signal angle of arrival, randomly selected aerial array；The scheme provided using the embodiment of the present application, realizes neighbours' discovery in the wireless network.
Description
Technical field
The present invention relates to radio network technique field, more particularly to a kind of millimeter wave wireless network neighbor find method and
Device.
Background technology
Due to mobile device and the unprecedented growth rate of Mobile solution bandwidth demand, mobile network's flow can rapidly increase
Plus, the mobile traffic demand of industrial quarters prediction can increase by 1000 times from 2012 to the year two thousand twenty.It is generally believed that millimetre-wave attenuator is solution
The certainly trump card of flow explosive growth problem, for example, 60GHz millimetre-wave attenuators.Nearest two IEEE 60GHz MAC/PHY
Standard, 802.11ad and 802.15.3c, have gone through, and will support a variety of new wireless hypervelocity applications, such as uncompressed
High definition video steaming, instant file synchronization and wireless extensions etc..
Traditional neighbours have found that (ND, Neighbor Discovery) implementation process is in WiFi or cellular network：Net
After network access point (AP, Access Point) periodic broadcasting wave beam, the beacon for the client identification wave beam being arranged in the range of AP,
Just AP information is will appreciate that, and can ask to access above-mentioned AP.But the program is only to be directed to traditional WiFi or cellular network, not
It can be suitably used for millimeter wave fast wireless network, such as 60GHz wireless networks.
The content of the invention
The purpose of the embodiment of the present invention is that providing a kind of millimeter wave wireless network neighbor finds method and device, with suitable
Realize that neighbours have found in millimeter wave express network, concrete technical scheme is as follows：
After first object wave beam is listened to, the beacon of the first object wave beam is decoded, wherein, described first
Object beam is：The wave beam that randomly selected aerial array is supported；
If the beacon of the first object wave beam can not be successfully decoded, the channel of the beacon of the first object wave beam is extracted
Status information, spatial channel state information is accumulate to by the channel condition information of the beacon of the first object wave beam；
According to default channel model and the spatial channel state information, optimal estimating signal angle of arrival is obtained；
Wave beam monitoring is carried out along the direction of the optimal estimating signal angle of arrival；
After the second object beam is listened to, the beacon of second object beam is decoded, wherein, described second
Object beam is：The wave beam supported along the direction of the optimal estimating signal angle of arrival, randomly selected aerial array；
If the beacon of second object beam can be successfully decoded, neighbours have found successfully；
If the beacon of second object beam can not be successfully decoded, second object beam is stored in for storing
In the beam collection of optimum beam；
If the beacon of first wave beam can be successfully decoded, neighbours have found successfully.
Further, it is described second wave beam is stored in for store optimum beam beam collection in after, also
Including：
Obtain in the second beam collection each wave beam respectively with the distance between each wave beam in first beam collection, its
In, second beam collection is：The set that each wave beam that the aerial array listened in preset period of time is supported is constituted；
By ultimate range in the distance obtained, corresponding wave beam is defined as the 3rd wave beam in second beam collection；
The beacon of 3rd wave beam is decoded, neighbours have found successfully.
Further, decoded in the beacon to the 3rd wave beam, before neighbours have found successfully, in addition to：
Judge whether the signal intensity of the 3rd object beam is more than or equal to the signal strength threshold of setting；
Decoded if it has, then performing the beacon to the 3rd wave beam, neighbours have found successful step；
If it has not, then continue the wave beam that monitoring antenna array is supported, and return and listening to first object ripple described in execution
Shu Hou, the step of being decoded to the beacon of the first object wave beam.
Further, the channel condition information of the beacon for extracting the first object wave beam, including：
The lead code of the beacon of the first object wave beam is extracted, the lead code is decoded, described first is obtained
The channel condition information of target beacon.
Further, the lead code is made up of the high Lay sequences of X M- Short Training domain, Y N- are high, and Lay sequence is constituted
Channel estimating domain constituted, wherein, X, Y are respectively the number of the high Lay sequences of M- and the high Lay sequences of N-, and M, N are high Lay sequence
Digit.
Further, it is described according to default channel model and the spatial channel state information, obtain optimal estimation letter
Number angle of arrival, including：
According to default channel model, paper channel status information is obtained, wherein, the default channel model is：Profit
The channel model constructed with the beam forming of aerial array；
According to the letter of the beacon of the paper channel status information, the channel condition information and the first object wave beam
Road space constraints, set up the object module of the channel status of the beacon of the first object wave beam；
The object module is solved, optimal estimating signal angle of arrival is obtained.
Further, it is described that the object module is solved, including:
The object module is solved using convex optimized algorithm.
A kind of millimeter wave wireless network neighbor finds device, and the device includes accumulation space channel module, the optimal prison of prediction
Listen beam steering module and apart from maximum beam steering module：
First decoder module, for after first object wave beam is listened to, being carried out to the beacon of the first object wave beam
Decoding, wherein, the first object wave beam is：The wave beam that randomly selected aerial array is supported；If described can be successfully decoded
The beacon of one wave beam, if neighbours have found that the beacon of the first object wave beam can not be successfully successfully decoded, channel mould is extracted in triggering
Block；
The extraction channel module, the channel condition information of the beacon for extracting the first object wave beam will be described
The channel condition information of the beacon of first object wave beam is accumulate to spatial channel state information；
Predict that optimal estimating signal reaches Corner Block List Representation, for according to default channel model and space channel state letter
Breath, obtains optimal estimating signal angle of arrival；
Prediction is optimal to monitor beam steering module, for carrying out wave beam prison along the direction of the optimal estimating signal angle of arrival
Listen；
Second decoder module, for after the second object beam is listened to, being carried out to the beacon of second object beam
Decoding, wherein, second object beam is：Along the direction of the optimal estimating signal angle of arrival, randomly selected antenna
The wave beam that array is supported；If the beacon of second object beam can be successfully decoded, neighbours have found successfully；If can not be successfully decoded
The beacon of second object beam, triggers beam collection module；
The beam collection module, for second object beam to be stored in the beam collection for storing optimum beam
In.
Further, described device also includes：
Distance calculation module, for obtain the second beam collection in each wave beam respectively with each ripple in first beam collection
The distance between beam, wherein, second beam collection is：Each wave beam that the aerial array listened in preset period of time is supported
The set of composition；
Comparison module, for corresponding wave beam to be determined in second beam collection by ultimate range in the distance obtained
For the 3rd wave beam；
3rd decoder module, is decoded, neighbours have found successfully for the beacon to the 3rd wave beam.
Further, described device also includes：
Judge module, the signal set for judging the signal intensity of the 3rd object beam whether to be more than or equal to is strong
Spend threshold value；Decoded if it has, then performing the beacon to the 3rd wave beam, neighbours have found successful step；If
No, beam steering module is monitored in triggering；
Beam steering module is monitored, for continuing the wave beam of monitoring antenna array support, and returns to that execution is described to listen to the
After one object beam, the step of being decoded to the beacon of the first object wave beam.
Further, the extraction channel module, including：
Channel condition information acquisition submodule, the lead code of the beacon for extracting the first object wave beam, to described
Lead code is decoded, and obtains the channel condition information of the first object beacon.
Further, the optimal estimating signal of prediction reaches Corner Block List Representation, including：
Paper channel status information submodule, for according to default channel model, obtaining paper channel status information, its
In, the default channel model is：The channel model constructed using the beam forming of aerial array；
Object module submodule, for according to the paper channel status information, the channel condition information and described
The channel space constraints of the beacon of one object beam, sets up the target of the channel status of the beacon of the first object wave beam
Model；
Optimal estimating signal angle of arrival obtains submodule, for being solved to the object module, is most preferably estimated
Direction of arrival.
The another aspect implemented in the present invention, additionally provides a kind of computer-readable recording medium, described computer-readable
Be stored with instruction in storage medium, when run on a computer so that computer performs a kind of any of the above-described described milli
Metric wave wireless network neighbor finds method.
The another aspect implemented in the present invention, the embodiment of the present invention additionally provides a kind of computer program production comprising instruction
Product, when run on a computer so that computer performs a kind of any of the above-described described millimeter wave wireless network neighbor hair
Existing method.
A kind of millimeter wave wireless network neighbor provided in an embodiment of the present invention finds method and device, can be by according to pre-
If channel model and the spatial channel state information, obtain optimal estimating signal angle of arrival；Along the optimal estimation letter
The direction of number angle of arrival carries out wave beam monitoring；After the second object beam is listened to, the beacon of second object beam is entered
Row decoding, and then realize that neighbours have found in the wireless network.Certainly, implementing any product or method of the present invention must not necessarily need
All the above advantage is reached simultaneously.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 has found method flow diagram for the first millimeter wave wireless network neighbor that the embodiment of the present application is provided；
Fig. 2 has found method flow diagram for second of millimeter wave wireless network neighbor that the embodiment of the present application is provided；
Fig. 3 has found the structural representation of device for a kind of millimeter wave wireless network neighbor that the embodiment of the present application is provided
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 has found method for the first millimeter wave wireless network neighbor that the embodiment of the present application is provided, and this method includes：
S101, after first object wave beam is listened to, is decoded to the beacon of the first object wave beam, wherein, institute
Stating first object wave beam is：The wave beam that randomly selected aerial array is supported；If the beacon of first wave beam can be successfully decoded,
Neighbours have found successfully；If the beacon of the first object wave beam can not be successfully decoded, S102 is performed；
The executive agent of the embodiment of the present application can be understood as after client, client accessing mobile communication network, real
Existing network service, need to carry out neighbours' discovery, specifically, the wave beam that the aerial array of client listening satellite is sent, then passes through
Analyze the wave beam listened to and find neighbours.
Wherein, above-mentioned wave beam is sent by aerial array, optionally, the wave beam (wave beam) can be by
The electromagnetic wave that 60GHz radio antennae arrays are sent, shape in space is as flashlight is to the light beam projected at dark.It is main
There are global beam, point shape wave beam, shaped-beam.They are determined its shape by transmitting antenna, certainly, and above-mentioned wave beam can also
It is to be sent by the aerial array based on other millimeter wave wireless networks, for example, 28GHz, 73GHz wireless network.
A kind of number is reduced into representated by it with ad hoc approach of above-mentioned decoding perhaps believes electric impulse signal, light
Number, radio wave etc. be converted into the processes of information, data representated by it etc..
Un-decodable it can be understood as recipient it should be noted that above-mentioned and fail to turn beacon (signal) form
Change.
S102, extracts the channel condition information of the beacon of the first object wave beam, by the letter of the first object wave beam
Target channel condition information is accumulate to spatial channel state information；
Wherein, above-mentioned channel (information channels) is the transmission medium of signal, can be divided into wire message way and
The class of wireless channel two；That is, channel refers to the signal path provided by wired or wireless electric line.
Above-mentioned channel condition information is：The channel attribute of communication link.It describes signal on every transmission paths
The value of each element in the weak factor, i.e. channel gain matrix H, such as signal dispersion (Scattering), environment are weak
(fading, multipath fading or shadowing fading), range attenuation (power decay of
The information such as distance).CSI can make communication system adapt to current channel condition, be in multi-antenna systems high reliability
The communication of high-speed, which is provided, to be ensured.
Above-mentioned idle channel state information includes the signal intensity and phase of space all directions.
Above-mentioned accumulation spatial channel state information can be understood as：Client exists to the un-decodable beacon being sequentially received
The signal intensity and phase of space all directions are stored and accumulated one by one, obtain the space channel after un-decodable beacon accumulation
Status information, is to being extracted from the point of view of the highly redundant protection of beacon lead code from un-decodable beacon based on 802.11ad
Channel condition information.
Specifically, a kind of embodiment of the channel condition information of the beacon of first object wave beam described in said extracted is：
The lead code of the beacon of the first object wave beam is extracted, the lead code is decoded, described first is obtained
The channel condition information of target beacon.
Specifically, above-mentioned beacon lead code is：The Short Training domain (STF) that is made up of the high Lay sequences of X M-, Y N- Gao Lai
The channel estimating domain (CEF) of sequence composition is constituted, wherein, the Short Training domain that is made up of the high Lay sequences of X M-, Y N- Gao Lai
The channel estimating domain of sequence composition is constituted, wherein, X, Y are respectively the number of the high Lay sequences of M- and the high Lay sequences of N-, and M, N are height
The digit of Lay sequence.
Wherein, what usual beacon lead code took is the lead code of standard, it by the high Lay sequences of 40 128- constitute it is short
The channel estimating domain (CEF) of the high Lay sequence composition of training domain (STF), 9 128- is constituted.
STF and CEF are by low order but stalwartness(Binary Phase Shift Keying, binary system phase
Move keying) constructed by module, STF is used to detect the presence of beacon and performs the synchronization of time/frequency；CEF, which is used to estimate, to be believed
Channel state information (CSI), wherein stalwartness refer to and antinoise more anti-interference compared with other normal load data.Because load
(head and the data that include packet) are to combine Direct Sequence Spread Spectrum using the planisphere (most 16-QAM) of higher order
(DSSS, Direct Sequence Spread Spectrum) or orthogonal frequency division multiplexi (OFDM, Orthogonal
Frequency Division Multiplexing) modulate, wherein, DSSS modules are loaded with a quilt(Low-
Density Parity-check, low-density checksum) coding protection 32 times of invasins.Therefore STF and CEF compares
DSSS and OFDM are more healthy and stronger, it is possible to extract decoding spatial channel state information using beacon lead code.
If for example, there is 9 × 128=1152 symbol estimation CSI, and only 32 × 2=64 symbol carrys out decoding load number
According to each bit；It can be seen that, estimate the SNR of CSI SNR (signal to noise ratio, SIGNAL-NOISE RATIO) compared estimate load data
It is lowThat is, RSS (the Received of given decoding load data bit
Signal Strength, received signal strength) threshold values be -78dBm, extract CSI threshold values THCSI can it is low arrive THCSI=-
78-12.55=-90.55dBm.
S103, according to default channel model and the spatial channel state information, obtains optimal estimating signal angle of arrival；
Wherein, above-mentioned direction of arrival is the angle of direction of arrival of signal and solid axes；
Specifically,
According to default channel model, paper channel status information is obtained, wherein, the default channel model is：Profit
The channel model constructed with the beam forming of aerial array；
According to the letter of the beacon of the paper channel status information, the channel condition information and the first object wave beam
Road space constraints, set up the object module of the channel status of the beacon of the first object wave beam；
The object module is solved, optimal estimating signal angle of arrival is obtained.
It should be noted that when receiving signal, 802.11ad clients perform the ripple based on code book using aerial array
Beam forming is constructed, and is that space channel is responded and product of the antenna along the gain of the direction along the signal of each direction in space,
Therefore, in order to generate u-th of wave beam, a series of wave beam weights are applied in antenna element, then NRThe linear antenna of individual element
Array is that channel model A (u, n) is in the wave beam generation income of any direction in space θ (n)：
Wherein, d is the spacing of antenna element, and λ is carrier wavelength, and u ∈ [1, U], U is wave beam sum, and w (u, i) is u-th
Wave beam, the corresponding weight vectors of i-th of antenna element, NRFor the element number of linear antenna arrays, j is imaginary number, and exp () is
e(·), i.e. e(·)It is the exponential function that the truth of a matter is e, n is space channel number, and n ∈ [1 ..., N], N is space channel sum, and n, N are
Positive integer,；
According to channel model, paper channel status information is obtained
Wherein, the continuous space channel response function of all space angles of x ().
According to paper channel status information, channel condition information and channel space constraints, the mesh of channel status is set up
Mark model；Detailed process is：
The channel of u-th of wave beam is measured, h is denoted asms(u), according to paper channel status information, constraint equation is obtained as follows：
Client obtains a series of whole P CSI measured values H along wave beam Φ directionsms, it is denoted as Hms={ hms
(1),…,hms(P) }, measurement result is：
AΦ,NX=Hms
AΦ,NFor wave beam generator matrix；HmsThe matrix constituted for channel measurement；P is CSI measured values HmsNumber, x
For the vector being made up of x, x is the continuous space channel response of all space angles.
Now by the above-mentioned embodiment of the present embodiment be defined as based on compressed sensing wave beam prediction (CSBP,
Compressive sensing based beam prediction)。
It is noted that in theory, because x is the continuous space channel response of all space angles, above-mentioned side
Journey still has height uncertain, still, because for intrinsic openness of actual 60GHz channels, can be by from channel
The matrix H of measurement result compositionmsWith wave beam generator matrix AΦ,NRecover leading space angle on a small quantity, i.e., with compressive sensing theory
Recovery problem is treated as optimization problem, then has the object module of channel status as follows：
min‖x‖1
s.t.AΦ,NX=Hms
Wherein, ‖ ‖1For single order norm, s.t. represents constraints；
Wherein, the object module of the channel status solve using convex optimized algorithm and obtain the optimal of object module
Solution, optimal solution is exactly optimal estimating signal angle of arrivalIt should be noted that can also be using methods such as genetic algorithms to target
Model is solved, and the invention is not restricted to convex optimized algorithm.
S104, wave beam monitoring is carried out along the direction of the optimal estimating signal angle of arrival；
According to optimal estimating signal angle of arrivalThat is optimum solution, client, which just can be found, optimal monitors wave beamClosing
And the wave beam of most strong channel is produced when antenna income and channel income：
Wherein, U is wave beam number,For the optimal estimating signal angle of arrival in n-th of direction；
S105, after the second object beam is listened to, is decoded to the beacon of second object beam, wherein, institute
Stating the second object beam is：The ripple supported along the direction of the optimal estimating signal angle of arrival, randomly selected aerial array
Beam；If the beacon of second object beam can be successfully decoded, neighbours have found successfully；If second target can not be successfully decoded
The beacon of wave beam, performs S106；
Wherein, the above-mentioned beacon to second object beam is decoded, that is in the optimal estimating signal
The beacon of the wave beam listened on the direction of angle of arrival is decoded.I.e. client can control beam direction selection, be increased with this
Quick decoding AP wave beams and complete the possibility that neighbours have found.
If the beacon of the above-mentioned wave beam listened on the direction of the optimal estimating signal angle of arrival can be decoded success,
Then neighbours then think to find successfully.
S106, second object beam is stored in the beam collection for storing optimum beam.
Wherein, above-mentioned storage optimum beam is to be stored in the ripple listened on the direction of the optimal estimating signal angle of arrival
Beam.
Therefore, according to channel model and the channel condition information of beam beacon, optimal estimating signal angle of arrival is obtained,
According to the optimal estimating signal angle of arrival, the wave beam most preferably monitored is found, the beacon of the wave beam most preferably monitored is carried out
Decoding, and then realize that neighbours have found in the wireless network.
It is described second wave beam is stored in for store optimum beam beam collection in after, can also further
Implement a kind of mode be：
Obtain in the second beam collection each wave beam respectively with the distance between each wave beam in first beam collection, its
In, second beam collection is：The set that each wave beam that the aerial array listened in preset period of time is supported is constituted；
By ultimate range in the distance obtained, corresponding wave beam is defined as the 3rd wave beam in second beam collection；
The beacon of 3rd wave beam is decoded, neighbours have found successfully.
Wherein, above-mentioned 3rd wave beam, which can be understood as search and the current beam collection for having attempted to decode, has maximum orthogonality
Property wave beam, the current wave beam having attempted to decode is the beam collection that the second object beam is constituted, the maximum orthogonality
Beam direction refer to the angle between the beam direction in the second object beam direction and beam collection Φ closest to 90 ° of ripple
Shu Fangxiang.That is, carrying out Infinite Cyclic in order to avoid CSBP is absorbed in over-fitting and can not decode, it is necessary to monitor one therewith
The wave beam of the preceding beam set distance maximum (i.e. the most orthogonal) attempted；Based on the purpose, can maximum probability jump out CSBP
Over-fitting optimization.
Specifically,
When channel measurement lazy weight, compressed sensing optimization may over-fitting channel characteristics x, from based on compression
Wave beam prediction (CSBP, Compressive sensing based beam prediction) un-decodable prediction of perception
It is optimal to monitor wave beamFall in client has attempted to the beam collection Φ that inquired about.
In view of this, propose to be based on predicting (MDBP, Maximum distance based apart from maximized wave beam
Beam prediction), that is, find out the beam direction that there is maximum orthogonality with the current beam collection attempted, it is described most
The beam direction of big orthogonality refers to the optimal beam direction monitored in wave beam i.e. the second object beam direction and beam collection Φ
Between angle closest to 90 ° of beam direction so that it is most based on that apart from maximized wave beam, can be added for channel characteristics
Information content, so as to help to be based on apart from Fast Convergent, lowers ND delays.
In order to determine the orthogonality between wave beam, a distance matrix is devised in MDBP.Due to same with the ideal of hypothesis
Structure fan-shaped beam is different, and the overlay area of the actual beam of aerial array generation and beam intensity are isomeries.Therefore, in MDBP
In, the distance between wave beam i and wave beam j Δi,jIt is defined as：
Δi,j=| | A (i,:)-A(j,:)||1
Due to consideration that the difference of amplitude and phase, therefore reflect the difference between unconventional shape wave beam, so as to obtain
Obtain wave beam i and attempt to search the distance between the beam collection Φ of optimal monitoring Wave beam forming Δi,ΦFor：
Wherein, i is the wave beam that aerial array is generated, and Φ is beam collection, Φ={ 1 ..., j ... U }
The wave beam of selected distance maximum in the distance of all acquisitions.
Specifically, choosing the wave beam of maximum in wave beam i and beam collection Φ distanceFor：
Understand,Wave beam on probation is most orthogonal in opposite beam collection Φ, and then obtains MDBP control clients
Direction is monitored to existOn wave beam, Δi,ΦIt is writing a Chinese character in simplified form for Δ (i, Φ).
It is worth mentioning that：MDBP combines one " measurement " and weighs the ultimate range collection of wave beam and beam collection to instruct
Selection is next to provide the beam direction of most orthogonal channel information, therefore avoids CSBP supersaturation.Neighbours have found
The beaconing mechanism of 802.11ad physical layers and MAC layer is remained, can be compatible with 802.11ad standards.
By apart from the signal intensity of the wave beam of maximumWith the signal strength threshold of settingIt is compared, ifIt is more than
Or be equal toThe wave beam of optimum distance is obtained, the beacon of the wave beam of the optimum distance is decoded, neighbours have found into
Work(；Otherwise, and to return to execution described after first object wave beam is listened to, the beacon of the first object wave beam is decoded
The step of, the wave beam until obtaining optimum distance further reduces neighbours in millimeter wave directed networkses and finds delay, and then makes
Client can faster connect and connect to the Net.
It is described by ultimate range in the distance obtained in second beam collection corresponding wave beam is defined as the 3rd
After wave beam, can also be to the another way further implemented：
Obtain in the second beam collection each wave beam respectively with the distance between each wave beam in first beam collection, its
In, second beam collection is：The set that each wave beam that the aerial array listened in preset period of time is supported is constituted；
By ultimate range in the distance obtained, corresponding wave beam is defined as the 3rd wave beam in second beam collection；
Judge whether the signal intensity of the 3rd object beam is more than or equal to the signal strength threshold of setting；
Decoded if it has, then performing the beacon to the 3rd wave beam, neighbours have found successful step；
If it has not, then continue the wave beam that monitoring antenna array is supported, and return and listening to first object ripple described in execution
Shu Hou, the step of being decoded to the beacon of the first object wave beam.
The beacon of 3rd wave beam is decoded, neighbours have found successfully.
Based on above-mentioned specific implementation, in another specific implementation of the application, referring to Fig. 2, there is provided second
The schematic flow sheet that millimeter wave wireless network neighbor finds method is planted, this method includes：
S201, after first object wave beam is listened to, is decoded to the beacon of the first object wave beam, wherein, institute
Stating first object wave beam is：The wave beam that randomly selected aerial array is supported；If the beacon of first wave beam can be successfully decoded,
Neighbours have found successfully, if the beacon of the first object wave beam can not be successfully decoded, and perform S202；
S202, extracts the channel condition information of the beacon of the first object wave beam, by the letter of the first object wave beam
Target channel condition information is accumulate to spatial channel state information；
S203, according to default channel model and the spatial channel state information, obtains optimal estimating signal angle of arrival；
S204, according to the letter of the paper channel status information, the channel condition information and the first object wave beam
Target channel space constraints, sets up the object module of the channel status of the beacon of the first object wave beam；
S205, is solved to the object module, obtains optimal estimating signal angle of arrival；
S206, wave beam monitoring is carried out along the direction of the optimal estimating signal angle of arrival；
S207, after the second object beam is listened to, is decoded to the beacon of second object beam, wherein, institute
Stating the second object beam is：The ripple supported along the direction of the optimal estimating signal angle of arrival, randomly selected aerial array
Beam；If the beacon of second object beam can be successfully decoded, neighbours have found successfully；If second target can not be successfully decoded
The beacon of wave beam, performs S208；
S208, second object beam is stored in the beam collection for storing optimum beam；
S209, obtain the second beam collection in each wave beam respectively between each wave beam in first beam collection away from
From, wherein, second beam collection is：The collection that each wave beam that the aerial array listened in preset period of time is supported is constituted
Close；
S210, by ultimate range in the distance obtained, corresponding wave beam is defined as the 3rd ripple in second beam collection
Beam；
S211, judges whether the signal intensity of the 3rd object beam is more than or equal to the signal strength threshold of setting；
The beacon of the 3rd wave beam is decoded if it has, then performing, neighbours have found successfully, if it has not, performing S212；
S212, continues the wave beam that monitoring antenna array is supported, and return to execution S201.
The present embodiment by using un-decodable beacon accumulation spatial channel information, using acquisition channel condition information and
Channel model predicts optimal beam direction；According to the optimal monitoring wave beam of acquisition, obtain apart from maximized wave beam, wireless
Rapidly and accurately realize that neighbours have found in network.
Corresponding with a kind of above-mentioned millimeter wave wireless network neighbor discovery, the embodiment of the present application additionally provides a kind of millimeter wave
Wireless network neighbor finds device.
Fig. 3 has found the structural representation of device, the device for the millimeter wave wireless network neighbor that the embodiment of the present application is provided
Including：
First decoder module 301, extraction channel module 302, the optimal estimating signal of prediction reach Corner Block List Representation 303, predicted most
Good monitoring beam steering module 304, the second decoder module 305 and beam collection module 306：
First decoder module 301, for after first object wave beam is listened to, entering to the beacon of the first object wave beam
Row decoding, wherein, the first object wave beam is：The wave beam that randomly selected aerial array is supported；If can be successfully decoded described
The beacon of first wave beam, neighbours are had found successfully, if the beacon of the first object wave beam can not be successfully decoded, and channel is extracted in triggering
Module 302；
The extraction channel module 302, the channel condition information of the beacon for extracting the first object wave beam, by institute
The channel condition information for stating the beacon of first object wave beam is accumulate to spatial channel state information；
Predict that optimal estimating signal reaches Corner Block List Representation 303, for according to default channel model and the space channel shape
State information, obtains optimal estimating signal angle of arrival；
Prediction is optimal to monitor beam steering module 304, for carrying out wave beam along the direction of the optimal estimating signal angle of arrival
Monitor；
Second decoder module 305, for after the second object beam is listened to, entering to the beacon of second object beam
Row decoding, wherein, second object beam is：Along direction, the randomly selected day of the optimal estimating signal angle of arrival
The wave beam that linear array is supported；If the beacon of second object beam can be successfully decoded, neighbours have found successfully；If can not successfully solve
The beacon of code second object beam, triggering beam collection module 306；
The beam collection module 306, for second object beam to be stored in the wave beam for storing optimum beam
Concentrate.
Specifically,
Described device also includes：
Distance calculation module, for obtain the second beam collection in each wave beam respectively with each ripple in first beam collection
The distance between beam, wherein, second beam collection is：Each wave beam that the aerial array listened in preset period of time is supported
The set of composition；
Comparison module, for corresponding wave beam to be determined in second beam collection by ultimate range in the distance obtained
For the 3rd wave beam；
3rd decoder module, is decoded, neighbours have found successfully for the beacon to the 3rd wave beam.
Judge module, the signal set for judging the signal intensity of the 3rd object beam whether to be more than or equal to is strong
Spend threshold value；Decoded if it has, then performing the beacon to the 3rd wave beam, neighbours have found successful step；Triggering
Beam steering module is monitored, if it has not, beam steering module is monitored in triggering；
The monitoring beam steering module, for continuing the wave beam of monitoring antenna array support, and it is described in monitoring to return to execution
To after first object wave beam, the step of being decoded to the beacon of the first object wave beam.
The extraction channel module 302, including：
Channel condition information acquisition submodule, the lead code of the beacon for extracting the first object wave beam, to described
Lead code is decoded, and obtains the channel condition information of the first object beacon.
The optimal estimating signal of prediction reaches Corner Block List Representation 303, including：
Paper channel status information submodule, for according to default channel model, obtaining paper channel status information, its
In, the default channel model is：The channel model constructed using the beam forming of aerial array；
Object module submodule, for according to the paper channel status information, the channel condition information and described
The channel space constraints of the beacon of one object beam, sets up the target of the channel status of the beacon of the first object wave beam
Model；
Optimal estimating signal angle of arrival obtains submodule, for being solved to the object module, is most preferably estimated
Direction of arrival.
The device of the present embodiment utilizes the channel status of acquisition by using un-decodable beacon accumulation spatial channel information
The optimal beam direction of information prediction；According to the optimal monitoring wave beam of acquisition, obtain apart from maximized wave beam, in wireless network
In rapidly and accurately realize neighbours find.
The embodiment of the present invention additionally provides a kind of electronic equipment, including processor, communication interface, memory and communication are always
Line, wherein, processor, communication interface, memory completes mutual communication by communication bus,
Memory, for depositing computer program；
Processor, for performing during the program deposited on memory, realizes following steps：
After first object wave beam is listened to, the beacon of the first object wave beam is decoded, wherein, described first
Object beam is：The wave beam that randomly selected aerial array is supported；
If the beacon of the first object wave beam can not be successfully decoded, the channel of the beacon of the first object wave beam is extracted
Status information, spatial channel state information is accumulate to by the channel condition information of the beacon of the first object wave beam；
According to default channel model and the spatial channel state information, optimal estimating signal angle of arrival is obtained；
Wave beam monitoring is carried out along the direction of the optimal estimating signal angle of arrival；
After the second object beam is listened to, the beacon of second object beam is decoded, wherein, described second
Object beam is：The wave beam supported along the direction of the optimal estimating signal angle of arrival, randomly selected aerial array；
If the beacon of second object beam can be successfully decoded, neighbours have found successfully；
If the beacon of second object beam can not be successfully decoded, second object beam is stored in for storing
In the beam collection of optimum beam；
If the beacon of first wave beam can be successfully decoded, neighbours have found successfully.
As can be seen here, the electronic equipment for performing the present embodiment offer can be according to channel model and the channel shape of beam beacon
State information, obtains optimal estimating signal angle of arrival, according to the optimal estimating signal angle of arrival, finds the wave beam most preferably monitored,
The beacon of the wave beam most preferably monitored is decoded, and then realizes that neighbours have found in the wireless network.
Above-mentioned related neighbor finds the neighbours discovery side that the embodiment of method is provided with preceding method embodiment part
Formula is identical, repeats no more here.
The communication bus that above-mentioned electronic equipment is mentioned can be Peripheral Component Interconnect standard (Peripheral Component
Interconnect, PCI) bus or EISA (Extended Industry Standard
Architecture, EISA) bus etc..The communication bus can be divided into address bus, data/address bus, controlling bus etc..For just
Only represented in expression, figure with a thick line, it is not intended that only one bus or a type of bus.
The communication that communication interface is used between above-mentioned electronic equipment and other equipment.
Memory can include random access memory (Random Access Memory, RAM), can also include non-easy
The property lost memory (Non-Volatile Memory, NVM), for example, at least one magnetic disk storage.Optionally, memory may be used also
To be storage device that at least one is located remotely from aforementioned processor.
Above-mentioned processor can be general processor, including central processing unit (Central Processing Unit,
CPU), network processing unit (Network Processor, NP) etc.；It can also be digital signal processor (Digital Signal
Processing, DSP), it is application specific integrated circuit (Application Specific Integrated Circuit, ASIC), existing
It is field programmable gate array (Field-Programmable Gate Array, FPGA) or other PLDs, discrete
Door or transistor logic, discrete hardware components.
A kind of computer-readable recording medium, the computer-readable recording medium internal memory contains computer program, described
Following steps are realized when computer program is executed by processor：
After first object wave beam is listened to, the beacon of the first object wave beam is decoded, wherein, described first
Object beam is：The wave beam that randomly selected aerial array is supported；
If the beacon of the first object wave beam can not be successfully decoded, the channel of the beacon of the first object wave beam is extracted
Status information, spatial channel state information is accumulate to by the channel condition information of the beacon of the first object wave beam；
According to default channel model and the spatial channel state information, optimal estimating signal angle of arrival is obtained；
Wave beam monitoring is carried out along the direction of the optimal estimating signal angle of arrival；
After the second object beam is listened to, the beacon of second object beam is decoded, wherein, described second
Object beam is：The wave beam supported along the direction of the optimal estimating signal angle of arrival, randomly selected aerial array；
If the beacon of second object beam can be successfully decoded, neighbours have found successfully；
If the beacon of second object beam can not be successfully decoded, second object beam is stored in for storing
In the beam collection of optimum beam；
If the beacon of first wave beam can be successfully decoded, neighbours have found successfully.
As can be seen here, can when performing the application program stored in the computer-readable recording medium that the present embodiment is provided
According to channel model and the channel condition information of beam beacon, optimal estimating signal angle of arrival is obtained, according to the optimal estimation
Direction of arrival, finds the wave beam most preferably monitored, and the beacon of the wave beam most preferably monitored is decoded, and then in wireless network
Realize that neighbours have found in network.
Above-mentioned related neighbor finds the neighbours discovery side that the embodiment of method is provided with preceding method embodiment part
Formula is identical, repeats no more here.
Therefore it should be noted that herein, such as first and second or the like relational terms are used merely to one
Individual entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operate it
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Cover including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include those
Key element, but also other key elements including being not expressly set out, or also include for this process, method, article or set
Standby intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in the process including the key element, method, article or equipment.
Each embodiment in this specification is described by the way of related, identical similar portion between each embodiment
Divide mutually referring to what each embodiment was stressed is the difference with other embodiment.Especially for device,
For electronic equipment, computer-readable recording medium embodiment, because it is substantially similar to embodiment of the method, so the ratio of description
Relatively simple, the relevent part can refer to the partial explaination of embodiments of method.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (14)
1. a kind of millimeter wave wireless network neighbor finds method, it is characterised in that this method includes：
After first object wave beam is listened to, the beacon of the first object wave beam is decoded, wherein, the first object
Wave beam is：The wave beam that randomly selected aerial array is supported；
If the beacon of the first object wave beam can not be successfully decoded, the channel status of the beacon of the first object wave beam is extracted
Information, spatial channel state information is accumulate to by the channel condition information of the beacon of the first object wave beam；
According to default channel model and the spatial channel state information, optimal estimating signal angle of arrival is obtained；
Wave beam monitoring is carried out along the direction of the optimal estimating signal angle of arrival；
After the second object beam is listened to, the beacon of second object beam is decoded, wherein, second target
Wave beam is：The wave beam supported along the direction of the optimal estimating signal angle of arrival, randomly selected aerial array；
If the beacon of second object beam can be successfully decoded, neighbours have found successfully；
If the beacon of second object beam can not be successfully decoded, second object beam is stored in optimal for storing
In the beam collection of wave beam；
If the beacon of first wave beam can be successfully decoded, neighbours have found successfully.
2. the method as described in claim 1, it is characterised in that second wave beam is stored in for storing most preferably described
After in the beam collection of wave beam, in addition to：
Obtain in the second beam collection each wave beam respectively with the distance between each wave beam in first beam collection, wherein, institute
Stating the second beam collection is：The set that each wave beam that the aerial array listened in preset period of time is supported is constituted；
By ultimate range in the distance obtained, corresponding wave beam is defined as the 3rd wave beam in second beam collection；
The beacon of 3rd wave beam is decoded, neighbours have found successfully.
3. method as claimed in claim 2, it is characterised in that decoded in the beacon to the 3rd wave beam, adjacent
Before residence is found successfully, in addition to：
Judge whether the signal intensity of the 3rd object beam is more than or equal to the signal strength threshold of setting；
Decoded if it has, then performing the beacon to the 3rd wave beam, neighbours have found successful step；
If it has not, then continuing the wave beam that monitoring antenna array is supported, and return described in execution after first object wave beam is listened to,
The step of being decoded to the beacon of the first object wave beam.
4. the method as any one of claim 1-3, it is characterised in that the letter of the extraction first object wave beam
Target channel condition information, including：
The lead code of the beacon of the first object wave beam is extracted, the lead code is decoded, the first object is obtained
The channel condition information of beacon.
5. method as claimed in claim 4, it is characterised in that the short training that the lead code is made up of the high Lay sequences of X M-
Practice domain, the channel estimating domain of the high Lay sequence compositions of Y N- to be constituted, wherein, X, Y are respectively the high Lay sequences of M- and the high Lay sequences of N-
Number, M, N be high Lay sequence digit.
6. the method as described in claim 1, it is characterised in that described according to default channel model and the space channel shape
State information, obtains optimal estimating signal angle of arrival, including：
According to default channel model, paper channel status information is obtained, wherein, the default channel model is：Utilize day
The channel model of the beam forming construction of linear array；
It is empty according to the channel of the beacon of the paper channel status information, the channel condition information and the first object wave beam
Between constraints, set up the object module of the channel status of the beacon of the first object wave beam；
The object module is solved, optimal estimating signal angle of arrival is obtained.
7. method as claimed in claim 6, it is characterised in that described to be solved to the object module, including:
The object module is solved using convex optimized algorithm.
8. a kind of millimeter wave wireless network neighbor finds device, it is characterised in that the device includes accumulation space channel module, pre-
Survey optimal monitoring beam steering module and apart from maximum beam steering module：
First decoder module, for after first object wave beam is listened to, being decoded to the beacon of the first object wave beam,
Wherein, the first object wave beam is：The wave beam that randomly selected aerial array is supported；If first wave beam can be successfully decoded
Beacon, if neighbours have found that the beacon of the first object wave beam can not be successfully successfully decoded, triggering extract channel module；
The extraction channel module, the channel condition information of the beacon for extracting the first object wave beam, by described first
The channel condition information of the beacon of object beam is accumulate to spatial channel state information；
Predict that optimal estimating signal reaches Corner Block List Representation, for according to default channel model and the spatial channel state information,
Obtain optimal estimating signal angle of arrival；
Prediction is optimal to monitor beam steering module, for carrying out wave beam monitoring along the direction of the optimal estimating signal angle of arrival；
Second decoder module, for after the second object beam is listened to, being decoded to the beacon of second object beam,
Wherein, second object beam is：It is disbursed from the cost and expenses along the direction of the optimal estimating signal angle of arrival, randomly selected antenna array
The wave beam held；If the beacon of second object beam can be successfully decoded, neighbours have found successfully；If described can not be successfully decoded
The beacon of two object beams, triggers beam collection module；
The beam collection module, for second object beam to be stored in the beam collection for storing optimum beam.
9. device as claimed in claim 8, it is characterised in that described device also includes：
Distance calculation module, for obtain the second beam collection in each wave beam respectively with each wave beam in first beam collection it
Between distance, wherein, second beam collection is：Each wave beam that the aerial array listened in preset period of time is supported is constituted
Set；
Comparison module, for corresponding wave beam to be defined as in second beam collection by ultimate range in the distance obtained
Three wave beams；
3rd decoder module, is decoded, neighbours have found successfully for the beacon to the 3rd wave beam.
10. device as claimed in claim 8, it is characterised in that described device also includes：
Judge module, for judging whether the signal intensity of the 3rd object beam is more than or equal to the signal intensity threshold of setting
Value；Decoded if it has, then performing the beacon to the 3rd wave beam, neighbours have found successful step；If it has not, touching
Hair monitors beam steering module；
Beam steering module is monitored, the first mesh is being listened to described in execution for continuing the wave beam that monitoring antenna array is supported, and returning
Mark after wave beam, the step of being decoded to the beacon of the first object wave beam.
11. the device as any one of claim 8-10, it is characterised in that the extraction channel module, including：
Channel condition information acquisition submodule, the lead code of the beacon for extracting the first object wave beam, to described leading
Code is decoded, and obtains the channel condition information of the first object beacon.
12. device as claimed in claim 8, it is characterised in that the optimal estimating signal of prediction reaches Corner Block List Representation, including：
Paper channel status information submodule, for according to default channel model, obtaining paper channel status information, wherein,
The default channel model is：The channel model constructed using the beam forming of aerial array；
Object module submodule, for according to the paper channel status information, the channel condition information and first mesh
The channel space constraints of the beacon of wave beam is marked, the target mould of the channel status of the beacon of the first object wave beam is set up
Type；
Optimal estimating signal angle of arrival obtains submodule, for being solved to the object module, obtains optimal estimating signal
Angle of arrival.
13. a kind of electronic equipment, it is characterised in that including processor, communication interface, memory and communication bus, wherein, processing
Device, communication interface, memory completes mutual communication by communication bus；
Memory, for depositing computer program；
Processor, for performing during the program deposited on memory, realizes any described method and steps of claim 1-7.
14. a kind of computer-readable recording medium, it is characterised in that the computer-readable recording medium internal memory contains computer
Program, the computer program realizes claim 1-7 any described method and steps when being executed by processor.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110769433A (en) * | 2018-07-26 | 2020-02-07 | 普天信息技术有限公司 | Synchronous signal access method, base station and terminal |
| US11219027B2 (en) | 2020-01-03 | 2022-01-04 | Qualcomm Incorporated | Methods for beam management in millimeter wave relays |
| EP4167533A1 (en) | 2021-10-15 | 2023-04-19 | Volkswagen Ag | Method for user equipment for improving a transmission efficiency, method for a network entity, apparatus, vehicle and computer program |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101517993A (en) * | 2006-09-22 | 2009-08-26 | 卢森特技术有限公司 | Methods of discovering neighbors in opportunistic open access ad hoc wireless networks |
| US20090232103A1 (en) * | 2008-03-11 | 2009-09-17 | Alex Kesselman | Apparatus and method adapted for directional bandwidth reservation with fixed announcement slot in wireless networks |
| CN101960909A (en) * | 2008-03-07 | 2011-01-26 | 英特尔公司 | Techniques enabling neighbor location discovery for MMWAVE WPAN with an out of band control channel |
| CN106165311A (en) * | 2014-02-06 | 2016-11-23 | 瑞典爱立信有限公司 | Wave beam forming selects |
-
2017
- 2017-06-29 CN CN201710513790.7A patent/CN107276698B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101517993A (en) * | 2006-09-22 | 2009-08-26 | 卢森特技术有限公司 | Methods of discovering neighbors in opportunistic open access ad hoc wireless networks |
| CN101960909A (en) * | 2008-03-07 | 2011-01-26 | 英特尔公司 | Techniques enabling neighbor location discovery for MMWAVE WPAN with an out of band control channel |
| US20090232103A1 (en) * | 2008-03-11 | 2009-09-17 | Alex Kesselman | Apparatus and method adapted for directional bandwidth reservation with fixed announcement slot in wireless networks |
| CN106165311A (en) * | 2014-02-06 | 2016-11-23 | 瑞典爱立信有限公司 | Wave beam forming selects |
Non-Patent Citations (1)
| Title |
|---|
| XUELI AN: ""impact of Antenna Pattern and Link Model on Directional Neighbor Discovery in 60 GHz Networks"", 《IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110769433A (en) * | 2018-07-26 | 2020-02-07 | 普天信息技术有限公司 | Synchronous signal access method, base station and terminal |
| US11219027B2 (en) | 2020-01-03 | 2022-01-04 | Qualcomm Incorporated | Methods for beam management in millimeter wave relays |
| EP4167533A1 (en) | 2021-10-15 | 2023-04-19 | Volkswagen Ag | Method for user equipment for improving a transmission efficiency, method for a network entity, apparatus, vehicle and computer program |
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