CN109450605A - A kind of high security dispatching method based on double mensurations feedback - Google Patents
A kind of high security dispatching method based on double mensurations feedback Download PDFInfo
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- CN109450605A CN109450605A CN201811597921.5A CN201811597921A CN109450605A CN 109450605 A CN109450605 A CN 109450605A CN 201811597921 A CN201811597921 A CN 201811597921A CN 109450605 A CN109450605 A CN 109450605A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
-
- 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
The present invention provides a kind of high security dispatching method based on double mensurations feedback, comprising: base station configurating channel state information reference signals, and configuration result is broadcasted outward；The feedback signal of each terminal publication is received, the feedback signal includes terminal iidentification and the pre-coding matrix that terminal is chosen, and the pre-coding matrix includes the first pre-coding matrix or the second pre-coding matrix；Base station carries out user's scheduling according to the pre-coding matrix got: user is dispatched in selected target, and the corresponding target terminal of Xiang Suoshu target dispatch user sends scheduling signals, and the scheduling signals include demodulated reference signal and physical down Line sharing channel signal.Terminal of the present invention carries out different feedbacks based on different scheduling signals, avoids can reduce the scheduling load of system using the single feedback scheduling based on CSI-RS measurement channel information in the prior art；In addition, being encrypted for scheduling process, to be obviously improved safety.
Description
Technical field
The present invention relates to the communications field, especially a kind of high security dispatching method based on double mensurations feedback.
Background technique
In 3 gpp, user is typically based on CSI-RS measurement and channel information and feeds back, it is clear that with the increase of antenna number,
The scheduling overhead of system will significantly increase.
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of high security dispatching parties based on double mensurations feedback
Method.
The present invention is realized with following technical solution:
A kind of high security dispatching method based on double mensurations feedback, comprising:
Base station configurating channel state information reference signals, and configuration result is broadcasted outward；
The feedback signal of each terminal publication is received, the feedback signal includes terminal iidentification and the precoding that terminal is chosen
Matrix, the pre-coding matrix include the first pre-coding matrix or the second pre-coding matrix；
Base station carries out user's scheduling according to the pre-coding matrix got: user, Xiang Suoshu target tune are dispatched in selected target
It spends the corresponding target terminal of user and sends scheduling signals, the scheduling signals include that demodulated reference signal and physical down route are total
Enjoy channel signal；
The scheduling signals are encrypted, and encryption method includes:
It is random to generate 2n+1 number, n data are obtained to (x according to preceding 2n numberi,yi)；
According to the n data to (xi,yi) and the 2n+1 number obtain encryption key；
Be-encrypted data is encrypted to obtain encryption data using the encryption key；
It is packaged the 2n+1 number and the encryption data generates encrypted packet.
Further, the acquisition methods of the encryption key are as follows: obtain with (xi,yi) it is 0 point using x as the algebra of independent variable
Formula, the algebraic expression can be expressed asBy 2n+1
Value of a number as x, the value of the obtained algebraic expression is encryption key.
Further, XOR operation is carried out to the be-encrypted data using encryption key and obtains encryption data.
Further, terminal judges the scheduling signals got and is decrypted that decryption method includes:
Obtain encrypted packet；
According to the 2n+1 number, decryption key is obtained；The acquisition methods of the decryption key are as follows: obtain with (xi,yi) it is 0
Point using x as the algebraic expression of independent variable, the algebraic expression can be expressed asBy 2n+1
Value of a number as x, the value of the obtained algebraic expression is decryption key；
XOR operation is carried out using the decryption key and encryption data, the data after being decrypted.
Further, terminal judges whether the data after decryption include demodulated reference signal, if including, measure the solution
Adjust reference signal to obtain the corresponding channel matrix H of the terminalk, the corresponding channel matrix of the terminal size Tn, and root
According to the channel matrix Hk, the corresponding channel matrix of the terminal size TnThe first pre-coding matrix is chosen from code book, and to base
It stands and issues feedback signal, the feedback signal includes terminal iidentification and the first pre-coding matrix that terminal is chosen；If not including solution
Reference signal is adjusted, then judges scheduling signals with the presence or absence of state information reference signals, and if it exists, then measures the status information ginseng
Signal is examined to obtain channel matrix Hk, and according to the channel matrix HkThe second pre-coding matrix is chosen from code book, and is sent out to base station
Cloth feedback signal, the feedback signal include terminal iidentification and the second pre-coding matrix that terminal is chosen；If neither including demodulation
Reference signal, and do not include state information reference signals, then not feeding back precoding matrix.
In the description of the invention, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the invention and simplifies description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For the limitation to the invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more of the features.In the description of the invention, unless separately
It is described, the meaning of " plurality " is two or more.
In the description of the invention, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the invention.
The beneficial effects of the present invention are:
A kind of high security dispatching method based on double mensurations feedback is provided in the present invention, terminal is based on different tune
Degree signal carries out different feedbacks, avoids using the single feedback tune based on CSI-RS measurement channel information in the prior art
Degree, can reduce the scheduling load of system；In addition, being encrypted for scheduling process, to be obviously improved safety.
Detailed description of the invention
Fig. 1 is the dispatching method flow chart provided in this embodiment based on feedback of channel information；
Fig. 2 is encryption method flow chart provided in this embodiment.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention will be made below further detailed
Description.
The embodiment of the present invention provide it is a kind of based on double mensurations feedback high security dispatching method, the dispatching method by
The scheduling system that base station and multiple terminals are constituted is implemented, and the proper noun that the embodiment of the present invention uses is the common name in this field
Word, therefore the embodiment of the present invention does not do excessive explanation, can refer to current art handbook.
Using base station unilateral side as executing subject, as shown in Figure 1, comprising:
S101. base station configurating channel state information reference signals, and configuration result is broadcasted outward.
The configuration result include channel state information reference signals port, channel state information reference signals picture and
The channel state information reference signals period.
S103. the feedback signal of each terminal publication is received, the feedback signal includes that terminal iidentification and terminal are chosen
Pre-coding matrix, the pre-coding matrix include the first pre-coding matrix or the second pre-coding matrix.
S105. base station carries out user's scheduling according to the pre-coding matrix got: user, Xiang Suoshu mesh are dispatched in selected target
The corresponding target terminal of mark scheduling user sends scheduling signals, and the scheduling signals include demodulated reference signal and physical down line
Share channel signal in road.
The demodulated reference signal and physical down Line sharing channel signal use identical pre-coding matrix.
Specifically, code book is generated by base station, and the number of pre-coding matrix is greater than or equal to pilot signal port in code book
Number.
Further, using terminal unilateral side as executing subject, comprising:
Judge in the scheduling signals that get whether to include that demodulated reference signal if including measures the demodulation reference
Signal is to obtain the corresponding channel matrix H of the terminalk, the corresponding channel matrix of the terminal size Tn, and according to described
Channel matrix Hk, the corresponding channel matrix of the terminal size TnThe first pre-coding matrix is chosen from code book, and is issued to base station
Feedback signal, the feedback signal include terminal iidentification and the first pre-coding matrix that terminal is chosen；If not including demodulation reference
Signal then judges scheduling signals with the presence or absence of state information reference signals, and if it exists, then to measure the state information reference signals
To obtain channel matrix Hk, and according to the channel matrix HkThe second pre-coding matrix is chosen from code book, and issues and feeds back to base station
Signal, the feedback signal include terminal iidentification and the second pre-coding matrix that terminal is chosen；If neither including that demodulation reference is believed
Number, it and does not include state information reference signals, then not feeding back precoding matrix.
Further, in order to increase the safety in scheduling process, the embodiment of the present invention is further to base station and user
The communication process of terminal has carried out Encryption Design, and the Encryption Design can be used for base station in order to be scheduled adding for signal
It is close, it can be applied to terminal also in order to carry out the encryption of feedback signal.Dispatching method in the embodiment of the present invention has been taken into account pair
The first pre-coding matrix to choose is measured in demodulated reference signal and state information reference signals are measured
To the second pre-coding matrix chosen, to reduce the CSI-RS expense in extensive antenna system, it is clear that for base station
For antenna communication process, Encryption Design can increase the load of system to a certain extent, therefore, in order to reach high security
Requirement, it is necessary to design the Encryption Algorithm that can either carry out encrypting and cannot dramatically increasing system loading.For this purpose, of the invention
A kind of simple and effective encryption method is devised in embodiment, is applied among scheduling system, can reach high safety
Property desired colleague, still maintain CSI-RS expense to be significantly reduced, and the advantage that system burden is small.
Specifically, as shown in Fig. 2, the encryption method includes:
S201. random to generate 2n+1 number, n data are obtained to (x according to preceding 2n numberi,yi)。
S202. according to the n data to (xi,yi) and the 2n+1 number obtain encryption key.
Specifically, the acquisition methods of the encryption key are as follows:
It obtains with (xi,yi) it is 0 point using x as the algebraic expression of independent variable, the algebraic expression can be expressed asBy 2n+1
Value of a number as x, the value of the obtained algebraic expression is encryption key.
S203. be-encrypted data is encrypted to obtain encryption data using the encryption key.
XOR operation is carried out to the be-encrypted data using encryption key and obtains encryption data.
S204. it is packaged the 2n+1 number and the encryption data generates encrypted packet.
Correspondingly, decryption method includes:
S205. encrypted packet is obtained.
S206. according to the 2n+1 number, decryption key is obtained.
The acquisition methods of the decryption key are as follows: obtain with (xi,yi) it is 0 point using x as the algebraic expression of independent variable, the generation
Numerical expression can be expressed asBy 2n+1
Value of a number as x, the value of the obtained algebraic expression is decryption key.
S207. XOR operation, the data after being decrypted are carried out using the decryption key and encryption data.
Above-mentioned enciphering and deciphering algorithm can be implemented in base station and terminal, can guarantee quick encryption and decryption, and in safety
On ensure communication safety enough, be in the embodiment of the present invention to the various scheduling overheads of scheduling system and guarantee safety etc. various aspects
The optimal case considered.
Claims (5)
1. a kind of high security dispatching method based on double mensurations feedback characterized by comprising
Base station configurating channel state information reference signals, and configuration result is broadcasted outward；
The feedback signal of each terminal publication is received, the feedback signal includes terminal iidentification and the precoding square that terminal is chosen
Battle array, the pre-coding matrix include the first pre-coding matrix or the second pre-coding matrix；
Base station carries out user's scheduling according to the pre-coding matrix got: user is dispatched in selected target, and Xiang Suoshu target dispatch is used
The corresponding target terminal in family sends scheduling signals, and the scheduling signals include demodulated reference signal and physical down Line sharing letter
Road signal；
The scheduling signals are encrypted, and encryption method includes:
It is random to generate 2n+1 number, n data are obtained to (x according to preceding 2n numberi,yi)；
According to the n data to (xi,yi) and the 2n+1 number obtain encryption key；
Be-encrypted data is encrypted to obtain encryption data using the encryption key；
It is packaged the 2n+1 number and the encryption data generates encrypted packet.
2. the method according to claim 1, wherein including:
The acquisition methods of the encryption key are as follows: obtain with (xi,yi) it is 0 point using x as the algebraic expression of independent variable, the algebraic expression
It can be expressed asBy 2n+1
Value of a number as x, the value of the obtained algebraic expression is encryption key.
3. the method according to claim 1, wherein including:
XOR operation is carried out to the be-encrypted data using encryption key and obtains encryption data.
4. method according to claim 3, it is characterised in that:
Terminal judges the scheduling signals got and is decrypted that decryption method includes:
Obtain encrypted packet；
According to the 2n+1 number, decryption key is obtained；The acquisition methods of the decryption key are as follows: obtain with (xi,yi) it is 0 point
Using x as the algebraic expression of independent variable, the algebraic expression can be expressed asBy 2n+1
Value of a number as x, the value of the obtained algebraic expression is decryption key；
XOR operation is carried out using the decryption key and encryption data, the data after being decrypted.
5. method according to claim 4, it is characterised in that:
Terminal judge decryption after data whether include demodulated reference signal, if including, measure the demodulated reference signal from
And obtain the corresponding channel matrix H of the terminalk, the corresponding channel matrix of the terminal size Tn, and according to the channel square
Battle array Hk, the corresponding channel matrix of the terminal size TnThe first pre-coding matrix is chosen from code book, and issues feedback letter to base station
Number, the feedback signal includes terminal iidentification and the first pre-coding matrix that terminal is chosen；If not including demodulated reference signal,
Judge scheduling signals with the presence or absence of state information reference signals, and if it exists, to measure the state information reference signals then to obtain
Channel matrix Hk, and according to the channel matrix HkThe second pre-coding matrix is chosen from code book, and issues feedback signal to base station,
The feedback signal includes terminal iidentification and the second pre-coding matrix that terminal is chosen；If neither including demodulated reference signal, again
It does not include state information reference signals, then not feeding back precoding matrix.
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