CN106454840A - Cloud wireless access network system and security scheduling method of physical layer thereof - Google Patents
Cloud wireless access network system and security scheduling method of physical layer thereof Download PDFInfo
- Publication number
- CN106454840A CN106454840A CN201610896994.9A CN201610896994A CN106454840A CN 106454840 A CN106454840 A CN 106454840A CN 201610896994 A CN201610896994 A CN 201610896994A CN 106454840 A CN106454840 A CN 106454840A
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- China
- Prior art keywords
- base station
- access network
- wireless access
- eavesdropping
- validated user
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/08—Access security
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a cloud wireless access network system comprising a central processor, base stations, legitimate users and eavesdropping users, one central processor is arranged, more than one base stations are arranged, the central processor is connected with the base stations, and the base stations are respectively connected with the legitimate users and the eavesdropping users. The invention further discloses a security scheduling method of a physical layer of the cloud wireless access network system. According to the security scheduling method disclosed by the invention, the maximum safe capacity of a cloud wireless access network is achieved by a simple base station selection algorithm; the optimal base station can be selected by the comparison of chain gains of legitimate links and eavesdropping links in active set base stations, the active set base stations are selected by a predetermined selection criterion, so the maximum safe capacity of the system can be guaranteed under different channel conditions, and the safe capacity of the system is improved by real-time link control without affecting the original communication system.
Description
Technical field
The present invention relates to the communications field, specifically a kind of cloud wireless access network system.
Background technology
Cloud wireless access network (Cloud-RAN, C-RAN) is processed based on centralization, collaborative radio and real-time cloud
Calculate the green wireless access network framework of framework.Its target is brought to operator by solving mobile Internet fast development
Many-sided challenge, including energy consumption, builds and O＆M cost and frequency spectrum resource etc..Based on caching cloud wireless access network,
The caching of certain capacity is set inside each wireless base station, if the download content of user's request is in cache contents, base station is straight
Connect and targeted customer is sent the file to, the pressure of center processor passback is mitigated with this, reduce network overhead.
On the other hand, wireless communication system is due to the opening of its communication media so that any user can receive
All signals in wireless channel.The wireless eavesdropping of malice can cause information（As call-information, identity information, positional information,
Signaling information between data message and movement station and the network control center etc.）Reveal.The identity information of mobile subscriber and position
The leakage of confidence breath can cause mobile subscriber by radio tracking.But people are not also worked out for cloud wireless access network
Sacurity dispatching method, so people cannot improve the safe capacity of legal link.
Content of the invention
It is an object of the invention to provide a kind of cloud wireless access network system, to solve proposition in above-mentioned background technology
Problem.
For achieving the above object, the present invention provides following technical scheme：
A kind of cloud wireless access network system, including center processor, base station, validated user and eavesdropping user, the center
The quantity of reason device is one, and the quantity of base station is that more than one, center processor is connected with base station, base station respectively with validated user
It is connected with eavesdropping user.
As the further scheme of the present invention：Caching is provided with base station.
The safety of physical layer dispatching method of the cloud wireless access network system, comprises the following steps that：
Step one, validated user sends request, the caching of demand file of the center processor according to validated user and each base station
Content, selectes activation collection；
Step 2, activating all base stations that concentrates carries out channel estimation to validated user and eavesdropping user, and by respective channel
Estimated value feeds back to center processor；
Step 3, center processor selects optimum base station according to predetermined selection criterion；
Step 4, optimum base station launches wireless signal, other base stations not transmission signal to validated user.
As the further scheme of the present invention：Predetermined selection criterion is the ratio of validated user and eavesdropping subscriber channel gain
Maximization criterion, validated user link channel gain maximize criterion or eavesdropping subscriber channel gain minimization criterion in
A kind of.
Compared with prior art, the invention has the beneficial effects as follows：The present invention passes through simply base station selected algorithm, realizes cloud
Change the maximum safe capacity of wireless access network；Only need to by increasing with the channel of eavesdropping link to legal link in activation collection base station
The contrast of benefit, you can pick out optimum base station, is selected to activation collection base station by predetermined selection criterion, can cause not
Ensure under same channel condition that system safe capacity is maximized, and is controlled by real-time link, is not affecting original communication system
Under conditions of, so as to improve the safe capacity of system.
Specific embodiment
With reference to specific embodiment, the technical scheme of this patent is described in more detail.
A kind of cloud wireless access network system, including center processor, base station, validated user and eavesdropping user, described in
The quantity of heart processor is one, and the quantity of base station is that more than one, center processor is connected with base station, base station respectively with legal
User is connected with eavesdropping user.Caching is provided with base station, for reducing the pressure to center processor passback.
The safety of physical layer dispatching method of the cloud wireless access network system, comprises the following steps that：
Step one, validated user sends request, the caching of demand file of the center processor according to validated user and each base station
Content, selectes activation collection, activates in the corresponding caching in all base stations that concentrates, the demand file of the validated user that is all stored with；
Step 2, activating all base stations that concentrates carries out channel estimation to validated user and eavesdropping user, and by respective channel
Estimated value feeds back to center processor；
Step 3, center processor selects optimum base station according to predetermined selection criterion, and predetermined selection criterion is legal use
The maximization criterion of ratio of family and eavesdropping subscriber channel gain, validated user link channel gain maximizes criterion or eavesdropping is used
Family channel gain minimizes the one kind in criterion；
Step 4, optimum base station launches wireless signal, other base stations not transmission signal to validated user.
The operation principle of the present invention is：The present invention can reach best safety by the selection to wireless base station to pick out
The activation collection base station of capacity, by simply comparing selection algorithm, you can reaches the maximized purpose of system safe capacity.Optimum
The selection criterion of base station is the key point of the present invention, and the optimal choice algorithm in the present invention can have multiple changes or simplify, and
Can be adapted to according to different channel condition information conditions.
The present invention passes through simply base station selected algorithm, realizes the maximum safe capacity of cloud wireless access network；Only need to
By to activation collection base station in legal link with eavesdropping link channel gain contrast, you can pick out optimum base station, pass through
Predetermined selection criterion is selected to activation collection base station, can cause to ensure system safe capacity most under difficult channel conditions
Bigization, is controlled by real-time link, under conditions of original communication system is not affected, so as to improve the safe capacity of system.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of spirit or essential attributes without departing substantially from the present invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of description is only that those skilled in the art should for clarity
Using description as an entirety, the technical scheme in each embodiment can also form those skilled in the art through appropriately combined
Understandable other embodiment.
Claims (4)
1. a kind of cloud wireless access network system, it is characterised in that use including center processor, base station, validated user and eavesdropping
Family, the quantity of the center processor is one, and the quantity of base station is more than one, and center processor is connected with base station, base station
It is connected with validated user and eavesdropping user respectively.
2. cloud wireless access network system according to claim 1, it is characterised in that be provided with caching in the base station.
3. a kind of safety of physical layer dispatching method of the cloud wireless access network system as described in claim 1-2 is arbitrary, which is special
Levy and be, comprise the following steps that：
Step one, validated user sends request, the caching of demand file of the center processor according to validated user and each base station
Content, selectes activation collection；
Step 2, activating all base stations that concentrates carries out channel estimation to validated user and eavesdropping user, and by respective channel
Estimated value feeds back to center processor；
Step 3, center processor selects optimum base station according to predetermined selection criterion；
Step 4, optimum base station launches wireless signal, other base stations not transmission signal to validated user.
4. the safety of physical layer dispatching method of cloud wireless access network system according to claim 3, it is characterised in that institute
State maximization criterion, validated user link channel that predetermined selection criterion is validated user and the ratio of eavesdropping subscriber channel gain
Gain maximizes criterion or the one kind in eavesdropping subscriber channel gain minimization criterion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610896994.9A CN106454840A (en) | 2016-10-14 | 2016-10-14 | Cloud wireless access network system and security scheduling method of physical layer thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610896994.9A CN106454840A (en) | 2016-10-14 | 2016-10-14 | Cloud wireless access network system and security scheduling method of physical layer thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106454840A true CN106454840A (en) | 2017-02-22 |
Family
ID=58174367
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610896994.9A Pending CN106454840A (en) | 2016-10-14 | 2016-10-14 | Cloud wireless access network system and security scheduling method of physical layer thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103686860A (en) * | 2011-07-15 | 2014-03-26 | 上海华为技术有限公司 | Distribution caching method and device of cached data |
| CN104320826A (en) * | 2014-10-10 | 2015-01-28 | 西安理工大学 | Chance relay-selection method for cooperative communication network under tapping environment |
| CN105813081A (en) * | 2016-03-09 | 2016-07-27 | 华侨大学 | Method for selecting relay nodes capable of enhancing security performance of cognitive relay network |
-
2016
- 2016-10-14 CN CN201610896994.9A patent/CN106454840A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103686860A (en) * | 2011-07-15 | 2014-03-26 | 上海华为技术有限公司 | Distribution caching method and device of cached data |
| CN104320826A (en) * | 2014-10-10 | 2015-01-28 | 西安理工大学 | Chance relay-selection method for cooperative communication network under tapping environment |
| CN105813081A (en) * | 2016-03-09 | 2016-07-27 | 华侨大学 | Method for selecting relay nodes capable of enhancing security performance of cognitive relay network |
Non-Patent Citations (2)
| Title |
|---|
| JIA YOU 等: "Security and Reliability Performance Analysis for Cloud Radio Access Networks With Channel Estimation Errors", 《IEEE ACCESS》 * |
| 雷秋燕 等: "基于C-RAN的5G无线接入网架构", 《电信科学》 * |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |