CN201947445U

CN201947445U - Dynamic spectrum allocation system based on time particle size

Info

Publication number: CN201947445U
Application number: CN201120037700XU
Authority: CN
Inventors: 韩建敏; 李军芳; 刘辉
Original assignee: CHINA NATIONAL RADIO SPECRUM MANAGEMENT Institute
Current assignee: CHINA NATIONAL RADIO SPECRUM MANAGEMENT Institute
Priority date: 2011-02-14
Filing date: 2011-02-14
Publication date: 2011-08-24
Anticipated expiration: 2021-02-14

Abstract

The utility model discloses a dynamic spectrum allocation system based on the time particle size, which comprises an operator base station, a coupling matrix module, a dynamic spectrum management module, a cognition database module, a cognition base station and a non-authorized user terminal. During the process of sharing spectrum, inspired by economic benefit, the authorized user can obtain the maximum benefit by sharing the spectrum without affecting the communication quality per se and can hereby actively participate in the spectrum sharing, and the non-authorized user can effectively alleviate the spectrum resource shortage situation by sharing the spectrum, so that utilization rate of the spectrum resource is effectively improved finally.

Description

Dynamic frequency spectrum deployment system based on the time granularity

Technical field

The utility model is a kind of dynamic frequency spectrum deployment system based on the time granularity that is applied in the cognitive radio.

Background technology

Based on the dynamic frequency spectrum deployment technology of time granularity is to realize having one of key technology in the Dynamic Spectrum Management network of cognitive function, is the sub-problem primary study content of the great special project of national science and technology " new generation broadband wireless mobile communication net " project " towards the rational spectrum utilization key technology research of WRC11 and verify ".

The utility model be exactly according to 2011 WRC (WRC-11) issues associated, based on the LTE scene and the cognition wireless network verification platform of setting up, the dynamic spectrum management method that design has the autonomous communication feature, under the prerequisite of service quality that guarantees authoring system and traffic needs, according to unauthorized system the demand of frequency spectrum is carried out the reasonable distribution of frequency spectrum resource, make system spectral resources obtain optimum utilization.

The utility model content

Lack in order to overcome the unreasonable frequency spectrum resource that causes of existing spectrum allocation may, alleviate frequency spectrum resource and use unbalanced problem, the utility model provides a kind of dynamic frequency spectrum deployment technology, this technology can effectively improve the availability of frequency spectrum, solved unauthorized user spectrum congestion, the problem of serious interference.

The scheme that its technical problem that solves the utility model adopts is: be divided into two stages according to the big young pathbreaker ASM of time granularity (the advanced spectrum management of Advanced Spectrum Management) spectrum allocation may process.So-called time granularity, the time interval that refers to adjacent twice dynamic regulation process, generally speaking, policies such as the price regulation and control between the multi-operator need claim that this time interval is big time granularity, in minizone and sub-district in just regulation and control once (general several hrs even several days) again of long period, because user's access and withdrawing from, frequency spectrum resource change is more frequent, distributes the time interval very little (generally from several seconds to somewhat), claim this time interval for hour between granularity.In a plurality of different operators cognition networks, use big time granularity, by dynamic Bertrand game method, weigh cost and income taxi frequency spectrum resource according to authorized user and unauthorized user situation, realize each side's interests maximization; In the minizone and sub-district of LTE network, granularity between using hour, according to the concrete environment of LTE network, by using the coupling matrix method, realize that under the prerequisite that guarantees authorized user service quality the frequency spectrum resource in the sub-district distributes, frequency spectrum resource is shared, realized that authorized user and unauthorized user use the coordination of resource.

The beneficial effects of the utility model are, can in cognitive radio, distribute frequency spectrum resource dynamically, under the prerequisite that guarantees authorized user service quality, give full play to authorized user and share the enthusiasm of frequency spectrum, alleviate the situation of unauthorized user frequency spectrum resource anxiety, thereby improved the utilance of frequency spectrum.

Description of drawings

Figure 1 shows that Dynamic Spectrum Management schematic diagram with cognitive function based on the LTE network.The left side is the unauthorized user Dynamic Spectrum Management part of big time granularity; The right be hour between the LTE network authorization user Dynamic Spectrum Management part of granularity.

Figure 2 shows that the interface parameters of coupling matrix and each module.

Figure 3 shows that based on hour between the LTE authorized user dynamic spectrum resource management of granularity, mainly constitute by coupling matrix module, cognitive database module and Dynamic Spectrum Management (DSM) module.

Figure 4 shows that the process of sharing frequency spectrum based on the unauthorized user of big time granularity.By the relevant information in the unauthorized user reading of data library module, according to the price of spectrum of authorized user, carry out Game of Price, last selective channel.

Embodiment

Below in conjunction with instantiation, the utility model is elaborated.

As shown in Figure 1, this system comprises operator base station 10, coupling matrix module 30, Dynamic Spectrum Management module 20, cognitive database module 40, cognitive base station 50 and unauthorized user terminal 60.

1, the operator base station provides current base station number of available channels and price of spectrum separately separately.The number of channel and price of spectrum are laid situation and operator's decision by each base station.Operator can under the prerequisite of equal channel quality, be provided with price of spectrum according to the maximization of economic benefit principle.

In the multi-operator aspect, adopt big time granularity, by dynamic Bertrand game method, adjust price of spectrum dynamically.Current price of spectrum, historical spectrum price, the historical spectrum requirement information of sharing frequency spectrum benefit and historical unauthorized user all can be learnt by each operator, select suitable weights in the different time cycle, regulate price of spectrum, in the hope of obtaining the maximization benefit.Because the update time of each channel status of spaced far update time in the coupling matrix of price of spectrum at interval, thereby be called big time granularity.

2, the coupling matrix module is used for the information of each operator of polymerization, user profile, adopt the method for coupling matrix, real-time calculating spectral radius, adopt " 0,1,2 model " expression channel status, and result of calculation is stored in Dynamic Spectrum Management module and the cognitive database module, for the dynamic assignment of frequency spectrum resource provides foundation.

3, the real-time renewal of Dynamic Spectrum Management module and identify the behaviour in service of each channel.If certain frequency range has been authorized to CU, then this frequency range is disabled to other authorized users and unauthorized user, gives this frequency range " 1 " sign; If certain frequency range is unoccupied, then this frequency range is available to authorized user and unauthorized user, gives this frequency range " 0 " sign; If certain frequency range is taken by unauthorized user, give this frequency range " 2 " sign.

In " 0; 1; 2 models ", when authorized user requires to insert, read the frequency spectrum resource assignment information from the cognitive database module, if idle channel (promptly be labeled as 0 channel) is arranged, then authorized user directly uses idle channel, when the channel that require to insert when authorized user has been taken by unauthorized user (be labeled as 2 channel), authorized user will require unauthorized user to discharge this frequency range; When unauthorized user requires to insert, can only under the situation that does not influence the authorized user use, use unoccupied channel.

After unauthorized user inserts certain available channel, respective element and cognitive database module in the real-time renewal coupling matrix module of DSM module, make in calculating that the coupling matrix module can be real-time and the reflection current area or the user mode of minizone frequency spectrum, for the frequency spectrum dynamic assignment of next cycle provides reliable foundation.

4, the cognitive database module provides cognitive base station usable spectrum vector, after frequency spectrum is occupied, upgrades the frequency spectrum state timely, and to coupling matrix module and the report of Dynamic Spectrum Management module.The cognitive database module can be stored the situation that each unauthorized user uses frequency spectrum simultaneously, comprises the charge information that time, business etc. are relevant.

5, cognitive base station is used to connect unauthorized user terminal and cognitive database module, for unauthorized user is searched available channel, when unauthorized user need be made a concession busy channel, the responsible channel that more renews in cognitive base station made the communication of unauthorized user not be interrupted or disturb.

6, the unauthorized user terminal is weighed price of spectrum and channel quality according to the demand of self, and the channel of selecting to be suitable for self communicates.Unauthorized user is shared the frequency spectrum resource of authorized user under the situation that does not need to pay the enormous expenditure that obtains license.Unauthorized user is in the process of sharing frequency spectrum, usable spectrum information and channel condition information in the real-time inquiry cognitive database, and according to self conditions of demand and relevant information such as the price of spectrum of each authorized user and channel quality, weigh the relation of cost and income, the paid shared frequency spectrum of renting authorized user reaches the purpose of communication.

In the process of frequency spectrum share, because the excitation of economic interests has been arranged, authorized user can be maximized the benefits by sharing the mode of frequency spectrum not influencing under the prerequisite of self communication quality, thus participation frequency spectrum share that can be positive; Unauthorized user also can effectively be alleviated the situation of frequency spectrum resource anxiety by the mode of sharing.Finally reach the effective rate of utilization that improves frequency spectrum resource.

Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection range of the utility model claims.

Claims

1. the dynamic frequency spectrum deployment system based on the time granularity is characterized in that, comprises operator base station, coupling matrix module, Dynamic Spectrum Management module, cognitive database module, cognitive base station and unauthorized user terminal; Described operator base station provides current this base station number of available channels and price of spectrum; Described coupling matrix module is used for the information and the user profile of each operator of polymerization, and real-time calculating spectral radius adopts " 0; 1,2 model " expression channel status, and the channel status of " 0; 1,2 model " expression is stored in Dynamic Spectrum Management module and the cognitive database module; The renewal that described Dynamic Spectrum Management module is real-time also identifies the behaviour in service of each channel; Described cognitive database module provides cognitive base station usable spectrum vector, after frequency spectrum is occupied, upgrades the frequency spectrum state timely, and to coupling matrix module and the report of Dynamic Spectrum Management module; The cognitive database module can be stored the situation that each unauthorized user uses frequency spectrum simultaneously, comprises the charge information that time, business etc. are relevant; Cognitive base station is used to connect unauthorized user terminal and cognitive database module, for unauthorized user is searched available channel, when unauthorized user need be made a concession busy channel, the responsible channel that more renews in cognitive base station, make the communication of unauthorized user not be interrupted or disturb, the unauthorized user terminal is weighed price of spectrum and channel quality according to the demand of self, and the channel of selecting to be suitable for self communicates.