CN101330461B - Method for implementing frequency spectrum cavity-pocket efficient utilization based on existing honeycomb communication signaling transmission - Google Patents
Method for implementing frequency spectrum cavity-pocket efficient utilization based on existing honeycomb communication signaling transmission Download PDFInfo
- Publication number
- CN101330461B CN101330461B CN2008101230185A CN200810123018A CN101330461B CN 101330461 B CN101330461 B CN 101330461B CN 2008101230185 A CN2008101230185 A CN 2008101230185A CN 200810123018 A CN200810123018 A CN 200810123018A CN 101330461 B CN101330461 B CN 101330461B
- Authority
- CN
- China
- Prior art keywords
- communication mode
- cognitive
- frequency spectrum
- existing honeycomb
- signaling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a method for realizing effective utilization of spectrum holes based on available cellular communication signaling, which is characterized in that the available cellular communication mode and the cognitive communication mode adopt a same clock source, a user terminal keeps the synchronization of the carrier frequency and the frame timing of the cognitive communication mode by locking on the carrier frequency and the frame timing of the available cellular communication mode. Signaling messages for allocating the frequency point, the bandwidth and the perceived spectrum holes of the cognitive communication mode are added in the available cellular communication signaling. A base station determines the cognitive manner including working parameters of the frequency, the bandwidth and the perceived spectrum holes based on the perception result, and notifies a user terminal in time via the added signaling of the available cellular communication mode. The user terminal allocates the cognitive communication mode thereof according to the effective time. The perceived spectrum results interact among base stations, and the user terminal transmits and reports the perceived spectrum information to the base stations via the added signaling of the available cellular communication mode. The method can effectively adopt cognitive radio technology in the radio cellular communication system, take full use of spectrum holes resource, and reduce possible conflicts with authorized users.
Description
Technical field
The invention belongs to wireless communication technology field, relate to radio honeycomb communication and cognitive radio technology, particularly transmission realizes the method that frequency spectrum cavity-pocket effectively utilizes based on existing honeycomb communication signaling.
Background technology
The develop rapidly of wireless communication technology makes limited frequency spectrum resources become more and more nervous.Cognitive radio (Cognitive Radio) notion that " electronics and electrical engineers association personal communication magazine " (IEEE Personal Communications) proposed in 1999, its core concept makes Wireless Telecom Equipment have the ability of finding and rationally utilizing " frequency spectrum cavity-pocket " exactly, and the Wireless Telecom Equipment with cognitive function can be operated in the frequency range of having authorized according to certain mode of " waiting for an opportunity ".The frequency spectrum resource that can be utilized that occurs in spatial domain, time domain and frequency domain is called as " frequency spectrum cavity-pocket ".The research of present cognitive wireless technology concentrates on frequency spectrum perception technology and the application of cognitive radio in WLAN (wireless local area network).The frequency spectrum perception technology comprises the detection to the pectrum noise temperature, and it is shared to determine with big as far as possible probability whether corresponding frequency spectrum is authorized to the user.Wireless cellular system is different from general WLAN (wireless local area network) or small-sized access network, and it need consider the switching of minizone, and in the roaming between different regions even between country variant.Because each area or national spectrum allocation may and use have than big-difference, so the distribution of frequency spectrum cavity-pocket may be different fully.Adopt common cognitive radio technology, the operating frequency needs of base station change according to the result of frequency spectrum perception at any time, these all users that just need reside in this sub-district change frequency thereupon, thereby increased system complexity greatly, and those users that are in free time or sleep pattern are difficult to change at any time frequency, have to rescan frequency and insert again.These shortcomings make the common cognitive radio technology of WLAN (wireless local area network) etc. be difficult to practical application in cellular network.Fast development along with wireless communication technology, wireless cellular network updates rapidly, developed into the third generation (3G) from second generation mobile communication system (2G), but the network of the system of a new generation needs long investment construction process, the network coverage of therefore new system has to rely on existing cellular system to replenish, thereby caused bimodulus, even the appearance of three mould terminals.The simple update of this wireless cellular network must cause the idle of a large amount of new investments and the existing network equipment and eliminate.Therefore the technology that adopts in the cellular radio should be considered resources such as can making full use of existing network and frequency.
Summary of the invention
The objective of the invention is to propose a kind of method of effectively utilizing based on existing honeycomb communication signaling transmission realization frequency spectrum cavity-pocket, existing cognitive radio technology is applied to the above-mentioned defective that exists in the radio honeycomb communication system to overcome.
The present invention is based on the existing honeycomb communication signaling transmission and realize the method that frequency spectrum cavity-pocket effectively utilizes, comprising: base station and user terminal all adopt existing honeycomb communication mode and cognitive communications mode; Described existing honeycomb communication mode is meant the cellular communication mode that adopts global system for mobile communications (GSM), individual radio connecting system (PHS), Narrowband CDMA (IS95 CDMA), Wideband Code Division Multiple Access (WCDMA) (WCDMA) or time division SCDMA (TD-SCDMA) on the frequency range of registering or getting access to; System in this existing honeycomb communication mode inserts, original signaling resident and that switch the sub-district remains unchanged, and the business demand of voice and low speed is also finished on the existing honeycomb communication mode; Described cognitive communications mode is meant frequency spectrum perception, prediction and the decision-making technique that adopts cognitive radio technology, and adopts sub-carrier number along with OFDM (OFDM) technology that available bandwidth changes takies and obsolete multi-band orthogonal frequency division multiplexing (OFDM) technology with the authorized user of some subcarrier owing to the arrowband; It is characterized in that:
Existing honeycomb communication mode and cognitive communications mode are adopted identical clock source, user terminal by being locked in the existing honeycomb communication mode carrier frequency and frame regularly on, realize and keep the carrier frequency of cognitive communications mode and frame regularly synchronously;
In original signaling of the existing honeycomb communication mode of base station and user terminal, increase signaling message, be called the signaling that the existing honeycomb communication mode increases in order to frequency, the bandwidth of configuration cognitive communications mode and the frequency spectrum cavity-pocket that perceives; The base station comprises the communication work parameter of frequency, bandwidth and frequency spectrum cavity-pocket information according to sensing results decision cognitive communications mode, and the timely informing user terminal of signaling that increases by the existing honeycomb communication mode; User terminal obtains disposing its cognitive communications mode according to the entry-into-force time behind the signaling information;
The result of mutual frequency spectrum perception between the base station, and user terminal is reported frequency spectrum perception information to the base station by the signaling transmission that the existing honeycomb communication mode increases.
The reliable signaling that the present invention has made full use of the existing honeycomb communication mode connects; carrier wave and frame timing relationship; introduce cognitive radio technology and made full use of frequency spectrum cavity-pocket and bandwidth varying and the conduct of many band OFDM technology data transfer means efficiently; and take between the base station even comprise the cooperation of user's frequency spectrum perception; make the present invention can in radio honeycomb communication system, adopt cognitive radio technology effectively; thereby can make full use of the frequency spectrum cavity-pocket resource; and reduce potentially conflicting to authorized user; make full use of existing cellular network and frequency resource simultaneously, protected the investment of existing networking.
Description of drawings
Fig. 1 is the base station schematic block diagram in the inventive method;
Fig. 2 is the terminal schematic block diagram in the inventive method.
Fig. 3 is N=100, adopts bandwidth varying and the average available free number of subchannels of many band OFDM technology comparison diagram during M=20.
Fig. 4 is the frequency spectrum perception blind area schematic diagram of single base station in the inventive method.
Fig. 5 is the collision probability figure of single sub-district and two community associated frequency spectrum perception.
Embodiment 1:
The present invention is based on the existing honeycomb communication signaling transmission and realize the method that frequency spectrum cavity-pocket effectively utilizes, can in the sub-district of cellular communication system, make full use of the frequency spectrum cavity-pocket resource.The frequency spectrum cavity-pocket that the cognitive communications mode perceives constantly in difference has dissimilar, comprising: the available bandwidth of frequency spectrum cavity-pocket changes, and exists the authorized user of arrowband to take frequency spectrum in the bigger frequency spectrum cavity-pocket, i.e. the frequency spectrum cavity-pocket of dressing.Available bandwidth for frequency spectrum cavity-pocket changes, and needs adopt OFDM (OFDM) technology of bandwidth varying to make full use of the frequency spectrum cavity-pocket of bandwidth change.The OFDM technology of bandwidth varying is meant that the subcarrier number of actual use can change along with the variation of available bandwidth.For the authorized user that has the arrowband in the bigger frequency spectrum cavity-pocket, need to adopt the OFDM technology of many bands.Many band OFDM technology be meant on the narrower frequency band that takies corresponding to authorized user subcarrier need not, and use subcarrier corresponding on other idle frequency bands that perceive to communicate.
The frequency that the cognitive communications mode perceives constantly in difference, bandwidth, frequency spectrum cavity-pocket state are different, and in order to realize the real-time change of cognitive communications mode running parameter, user terminal is informed by the signaling transmission that the existing honeycomb communication mode increases in the base station.Its process is the frequency that the signaled user terminal cognitive communications mode that the existing honeycomb communication mode increases is passed through in the base station, bandwidth of operation, running parameters such as frequency spectrum cavity-pocket state, these parameters will be engraved in when the next one in base station and terminal use's the cognitive radio communication mode and come into force simultaneously, thus guarantee the cognitive communications mode effectively and continuous operation can not cause the variation of operational frequency bandwidth and cause communication interruption because of the frequency spectrum cavity-pocket variation that perceives.Because the running parameter of cognitive communications mode is along with the frequency spectrum cavity-pocket real-time change that perceives, for the carrier frequency that realizes the cognitive communications mode and frame regularly synchronously, the existing honeycomb communication mode should adopt identical clock source with the cognitive communications mode, and clock and the radio-frequency carrier or the local oscillator of existing honeycomb communication mode and cognitive communications mode homology is provided by phase-locked loop.Simultaneously there is stronger frequency spectrum perception ability the base station, can perception and prediction frequency spectrum cavity-pocket, and the variation of the messaging parameters such as signaling configuration notification user terminal spectral bandwidth by the existing honeycomb communication mode.
Fig. 1 has provided and the present invention is based on the base station schematic block diagram that the existing honeycomb communication signaling transmission realizes the method that frequency spectrum cavity-pocket effectively utilizes: the cognitive communications mode of base station is produced by different phase-locked loop plls 1 and PLL2 by identical clock source OSC with the radio-frequency carrier of existing honeycomb communication mode or local oscillator, and the frame of cognitive communications mode and existing honeycomb communication mode regularly is identical; The scheduler module C5 of the cognitive communications mode of base station is according to sensing results and the frequency spectrum perception result of other base stations and the spectrum cognitive strategy of distribution of the frequency spectrum sensing module C4 of base station self, the shared frequency spectrum cavity-pocket resource of decision next frame or next one particular moment cognitive communications mode, the protocol stack E2 of existing honeycomb communication mode bottom is given in configuration, and send by its physical layer E1, while also disposes the physical layer C1 that gives the cognitive communications mode and produces cognitive communications mode radio-frequency carrier or the phase-locked loop pll 2 of local oscillator and the physical layer C2 of cognitive communications mode, switches the running parameter of cognitive communications mode when next frame or next one particular moment arrival.The higher level protocol suite of existing honeycomb communication mode and cognitive communications mode is respectively E3 and C3.
User terminal increases the cognitive communications processing mode on the basis of existing honeycomb communication mode, and the Signalling exchange of protocols having stack bottom ensures the as a result real-time change of the parameter of cognitive communications mode along with the frequency spectrum decision-making.Fig. 2 has provided and the present invention is based on the user terminal schematic block diagram that the existing honeycomb communication signaling transmission realizes the method that frequency spectrum cavity-pocket effectively utilizes: user terminal increases the cognitive communications processing mode on the basis of existing honeycomb communication mode, the existing honeycomb communication mode of user terminal is produced by different phase-locked loop plls 1 and PLL2 by identical clock source OSC equally with the radio-frequency carrier of cognitive communications mode or local oscillator, and the frame of cognitive communications mode and existing honeycomb communication mode regularly is identical, the existing honeycomb communication mode of user terminal synchronously and be locked on the existing honeycomb communication mode of base station, keep the carrier wave of existing honeycomb communication mode or local oscillator and frame regularly synchronously, therefore can realize and keep the carrier wave of cognitive communications mode and frame regularly synchronously; After the underlying protocol stack module E7 of existing honeycomb communication mode receives the signaling of running parameter of base station configuration cognitive communications mode, configuration is at once given the physical layer block C6 of cognitive communications mode and is produced cognitive communications mode carrier wave or the phase-locked loop module PLL2 of local oscillator and the underlying protocol stack module C7 of cognitive communications mode, make them constantly adopt new running parameter coming into force, the efficient communication of keeping the cognitive communications mode connects; The protocol stack upper layer module E8 of existing honeycomb communication mode handles and comprises that existing honeycomb communication modes such as access, registration and switching increase the system message of cognitive communications mode; The physical layer block E6 of user terminal existing honeycomb communication mode keeps and regularly synchronous of the carrier wave of base station existing honeycomb communication mode and frame.The upper-layer protocol stack module C8 of the cognitive communications mode of user terminal and the optional frequency spectrum sensing module C9 of user terminal are used for perceived spectral, and sensing results reported to the base station, the sensing results by fully utilizing each base station and the sensing results of user terminal reduce to the conflict of authorized user may.
The present invention is based on the existing honeycomb communication signaling transmission and realize that the spectrum cognitive of the method that frequency spectrum cavity-pocket effectively utilizes and decision-making can be summed up as following three steps:
(1) spectrum scan and perception.Whole cognitive band scan is carried out in the base station when receiving subscriber signal.User terminal also scans whole cognitive frequency range at one's leisure, and frequency spectrum perception was tied the result feeds back to the base station by the existing honeycomb communication mode.
(2) frequency spectrum decision-making.Corresponding cognitive strategy in base station or configuration are distributed to according to the layout and the local spectrum allocation may and the handling characteristics of whole network in base station controller or RRM center, the messaging parameters such as frequency bandwidth of base station prediction and decision next frame or the cognitive communications mode of next particular moment.
(3) frequency spectrum uses.When the next one used the frequency spectrum that cognition arrives constantly, the base station was by the user of the signaled correspondence of existing honeycomb communication mode; Coming into force constantly, base station and user forward on the communication work parameter such as correspondent frequency bandwidth simultaneously, realize the utilization of frequency spectrum cavity-pocket.
The present invention is based on the characteristics that the existing honeycomb communication signaling transmission realizes the method that frequency spectrum cavity-pocket effectively utilizes in order to illustrate better, below by the available bandwidth of simulation analysis list base station cognitive communications mode.For simplicity, the total bandwidth of consideration cognitive communications mode is B
Total, being divided into Au1 and being total to N subchannel to AuN, each subchannel bandwidth is B
Au, suppose that channel is that the switch of simplifying (on/off) takies situation, promptly authorized user is with synchronous time division multiplexing (TDD) mode busy channel, and the idle probability of the uncommitted CU of each channel is p in each time slot.If B
AuBe the bandwidth of each subchannel of authorized user, the subchannel number of the maximum correspondence that M supports for the cognitive communications mode, then the maximum operation frequency bandwidth that adopts of cognitive communications mode is B
Cr=M * B
AuFurther the frame length of supposition authorized user is longer; and the frame length of cognitive communications mode is shorter; under synchronous switch channel occupancy situation, because switching point synchronously and as can be known, the cognitive communications mode is in the beginning of each idle time slot of authorized user and reserve the certain protection interval at last in time.Whether use channel at interval if can be used for detecting authorized user in the protection of beginning, and last protection is used at interval guaranteeing that can not use next time slot to produce to authorized user because of propagation delay time disturbs.Therefore, if can effectively detect whether busy channel of authorized user, just can not produce and disturb the communication of authorized user.
In single cell system of the inventive method, authorized user is distributed in the sub-district, and technology makes full use of adjacent idle sub-channels if the cognitive communications mode adopts bandwidth varying OFDM, then cognitive to utilized frequency spectrum cavity-pocket size B
Cr_VOFDMThe spectral bandwidth that forms for the subchannel of continuous free time maximum in N the subchannel.The expectation of the maximum available subchannels number of cognitive communications mode:
If adopt many band OFDM technology, promptly the cognitive communications mode is with maximum bandwidth work, and the subchannel that takies for authorized user in the bandwidth of operation will not be used to transmitting-receiving, the big or small B of the frequency spectrum cavity-pocket that then perceives
Cr_multitoneFor comprising the spectral bandwidth that idle sub-channels constitutes in adjacent M the maximum subchannel of idle sub-channels number.The expectation of the maximum available subchannels number of cognitive communications mode is:
Owing to directly try to achieve
With
Complicated, adopt the Monte Carlo simulation method to obtain effective estimation of number of subchannels average available in the cognitive communications mode in the present embodiment.Fig. 3 has provided N=100 subchannel, the cognitive communications mode that maximum bandwidth is respectively M=10 and 20 subchannels adopts bandwidth varying OFDM technology and many band OFDM technology along with the cognitive communications mode average available sub channels that authorized user channel idle probability increases is counted change curve, and simulation times is 1,000,000 times.Wherein the number of subchannels M of curve Q1 many band OFDM technology and maximum correspondence for the cognitive communications mode adopts is the change curve of 20 o'clock average available idle sub-channels number, curve Q2 is the change curve of 20 o'clock average available idle sub-channels number for the cognitive communications mode adopts the number of subchannels M of bandwidth varying OFDM technology and maximum correspondence, and it is the change curve of 10 o'clock average available idle sub-channels number that curve Q3 is with the number of subchannels M of OFDM technology and maximum correspondence for the cognitive communications mode adopts more.Curve Q4 is the change curve of 10 o'clock average available idle sub-channels number for the cognitive communications mode adopts the number of subchannels M of bandwidth varying OFDM technology and maximum correspondence.Average available sub channels from Fig. 3 is counted change curve Q1, Q2, Q3 and Q4 are along with the different distributions characteristics of the increase of the idle probability of authorized user can be seen, the cognitive communications mode can obtain bigger available bandwidth when the idle probability of authorized user is bigger, and adopts when the operational frequency bandwidth of cognitive communications mode is big and be with the OFDM technology can significantly improve the available subchannels number more.The variation along with the number of subchannels M of maximum correspondence when the idle probability of authorization channel is low of bandwidth varying OFDM technology is very little, because the idle probability of authorization channel hour, idle probability is very little simultaneously for a plurality of adjacent sub-channel, so M becomes very little to average available idle sub-channels number influence greatly.The number of subchannels M of cognitive communications mode maximum correspondence is big more, needs that the idle probability of authorization channel is big more just to be reached or near maximum.
For illustrate the present invention is based on method that existing honeycomb communication signaling transmission realizes that frequency spectrum cavity-pocket effectively utilizes in the multi-plot joint frequency spectrum perception to Effect on Performance, thereby following surface analysis multi-base station cooperative frequency spectrum perception reduces the situation of collision probability.Fig. 4 is the frequency spectrum perception blind area schematic diagram of single base station in the inventive method.Consider the cell pattern of two simplification that base station A cognitive communications mode and base station B cognitive communications mode are constituted in this method, the radius of society of the existing honeycomb communication mode of base station A and base station B is respectively dA and dB, establishes radius of society dA and dB and equates and be d; Authorized user 2 sends, and authorized user 1 receives, and authorized user 1 is positioned at the sub-district of base station A, is t from the distance of base station A; Authorized user 2 evenly distributes in the ultimate range that its communication mode is supported at random at distance authorized user 1; If only be that base station A carries out frequency spectrum perception, then the cognitive communications mode of base station A just in time detect less than authorized user 1 apart from r
MaxBe the frequency spectrum perception detection range that its receiving sensitivity is supported, the ultimate range that communication is supported between authorized user is l
Max, this moment, the cognitive communications mode to the probability that authorized user produces conflict was:
0≤t≤d wherein.The cognitive communications mode of first respective base station A always detects less than authorized user 2 busy channels in the following formula, therefore must clash, main cause is that the transmitted power of authorized user is much smaller than user's cognitive communications mode, even therefore be positioned at the inside, sub-district of base station A, the cognitive communications mode also can't detect; Second is partly to detect authorized user 2 busy channels; The 3rd correspondence always can detect authorized user 2 busy channels.The total collision probability of above-mentioned single cell spectrum perception is:
If base station A and base station B carry out collaborative spectrum sensing, the probability that then produces conflict becomes base station A and base station B and all detects probability less than authorized user:
0≤t≤d wherein, the collision probability of base station A and B collaborative spectrum sensing is:
Because terminal use's transmitted power is limited, so the radius of cellular cell mainly is subject to up link.The Data Receiving sensitivity of supposing user terminal cognitive communications mode is-90dBmW, effectively detect authorized user whether the receiving sensitivity of busy channel be-97dBmW, the maximum transmit power of user's cognitive communications mode is 23dBmW, authorized user sends with constant power, and its receiving sensitivity is-90dBmW; The propagation model of channel adopts the free space propagation model: Loss (dB)=32.45+20logf (MHz)+20lgD (Km), wherein f is 2000MHz.Radius of society d mainly is subject to the maximum transmit power of cognitive communications mode like this, and the base station to authorized user whether the detection of busy channel apart from r
MaxMainly be subject to the transmitted power of authorized user.Because the maximum power of cognitive communications mode is fixed, then the cognitive communications mode has determined to produce the probability size of conflicting with the difference power of authorized user.
Fig. 5 be under these conditions single sub-district and the collision probability simulation result figure of two community associated frequency spectrum perception.Curve Q5 among the figure is that only base station A carries out the collision probability of frequency spectrum perception to authorized user, and curve Q6 is that base station A and base station B carry out the collision probability of frequency spectrum perception to authorized user simultaneously.Can see: if user's cognitive communications mode is little than the maximum transmit power of authorized user, the radius of society of cognitive communications mode takies the ultimate range of frequency spectrum less than perceiving authorized user, therefore base station cognitive communications mode can detect the frequency spectrum that authorized user takies better, thus the generation that reduces to conflict.Otherwise, if the transmitted power of authorized user is less, will cause cognitive communications mode radius of society greater than the ultimate range that can detect authorized user, even thereby authorized user when sending in the part position of inside, sub-district, the base station also can't detect, thereby causes conflict.The result of two base stations united perception among Fig. 5 will mainly be because the associating perception of two base stations can be eliminated the cognitive blind area that wherein is positioned at neighbor cell significantly better than the sensing results of single sub-district.The associating sensing results of two sub-districts sends than authorized user in the maximum of cognitive communications mode that collision probability begins to occur behind the big 10dBmW, be since at this moment the transmitted power of authorized user thereby effectively detect than little many of the transmitted power of user's cognitive communications mode apart from r
MaxBe that d is much smaller also, thereby the cognitive communications mode of base station can't detect the authorized user that is sending that is positioned at its cell edge position, disturb and just can't avoid than radius of society.As seen in order to make full use of frequency spectrum cavity-pocket, need carry out the frequency spectrum associating perception and the decision-making of minizone, even also need to utilize the sensing results of user terminal, could will drop to lower degree the conflict of authorized user.
Claims (1)
1. realize the method that frequency spectrum cavity-pocket effectively utilizes based on existing honeycomb communication signaling transmission for one kind, comprising: base station and user terminal all adopt existing honeycomb communication mode and cognitive communications mode; Described existing honeycomb communication mode is meant the cellular communication mode that adopts global system for mobile communications, individual radio connecting system, Narrowband CDMA, Wideband Code Division Multiple Access (WCDMA) or time division SCDMA on the frequency range of registering or getting access to; System in this existing honeycomb communication mode inserts, original signaling resident and that switch the sub-district remains unchanged, and the business demand of voice and low speed is also finished on the existing honeycomb communication mode; Described cognitive communications mode is meant frequency spectrum perception, prediction and the decision-making technique that adopts cognitive radio technology, and adopts sub-carrier number along with the orthogonal frequency division multiplexi that available bandwidth changes takies and obsolete multi-band orthogonal frequency division multiplexing technology with the authorized user of some subcarrier owing to the arrowband; It is characterized in that:
Existing honeycomb communication mode and cognitive communications mode are adopted identical clock source, user terminal by being locked in the existing honeycomb communication mode carrier frequency and frame regularly on, realize and keep the carrier frequency of cognitive communications mode and frame regularly synchronously;
In original signaling of the existing honeycomb communication mode of base station and user terminal, increase signaling message, be called the signaling that the existing honeycomb communication mode increases in order to frequency, the bandwidth of configuration cognitive communications mode and the frequency spectrum cavity-pocket that perceives; The base station comprises the communication work parameter of frequency, bandwidth and frequency spectrum cavity-pocket information according to sensing results decision cognitive communications mode, and the timely informing user terminal of signaling that increases by the existing honeycomb communication mode; User terminal obtains disposing its cognitive communications mode according to the entry-into-force time behind the signaling information;
The result of mutual frequency spectrum perception between the base station, and user terminal is reported frequency spectrum perception information to the base station by the signaling transmission that the existing honeycomb communication mode increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101230185A CN101330461B (en) | 2008-06-18 | 2008-06-18 | Method for implementing frequency spectrum cavity-pocket efficient utilization based on existing honeycomb communication signaling transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101230185A CN101330461B (en) | 2008-06-18 | 2008-06-18 | Method for implementing frequency spectrum cavity-pocket efficient utilization based on existing honeycomb communication signaling transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101330461A CN101330461A (en) | 2008-12-24 |
| CN101330461B true CN101330461B (en) | 2011-05-18 |
Family
ID=40206059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101230185A Expired - Fee Related CN101330461B (en) | 2008-06-18 | 2008-06-18 | Method for implementing frequency spectrum cavity-pocket efficient utilization based on existing honeycomb communication signaling transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101330461B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101909303B (en) * | 2009-06-04 | 2013-10-09 | 华为技术有限公司 | Dispatching method, device and system of wireless cellular network |
| CN101702635B (en) * | 2009-10-28 | 2013-06-19 | 北京邮电大学 | Method for switching frequency spectrum based on cognitive radio technology and system thereof |
| CN101754242B (en) * | 2009-12-29 | 2012-03-28 | 浙江大学 | Access method of opportunistic cognitive multi-carrier link layer protocol |
| CN102137409B (en) * | 2010-01-25 | 2014-12-31 | 北京邮电大学 | Spectrum distributing method |
| EP2620028B1 (en) * | 2010-09-23 | 2020-04-29 | BlackBerry Limited | System and method for dynamic coordination of radio resources usage in a wireless network environment |
| CN102457865A (en) * | 2010-10-25 | 2012-05-16 | 中国移动通信集团公司 | Adjustment method, terminal and equipment for frequency |
| CN102572975B (en) * | 2010-12-31 | 2015-08-19 | 中国移动通信集团公司 | A kind of method of switching operating frequency of cells, system and equipment |
| CN102740304A (en) * | 2011-04-11 | 2012-10-17 | 中国移动通信集团公司 | Method for using a free television channel, and base station |
| US8848638B2 (en) * | 2011-06-27 | 2014-09-30 | Telefonaktiebolaget L M Ericsson (Publ) | Cellular communication system support for limited bandwidth communication devices |
| US8437790B1 (en) * | 2011-12-08 | 2013-05-07 | Microsoft Corporation | Location determination for white space utilization |
| CN102625319B (en) * | 2012-04-06 | 2015-04-22 | 电信科学技术研究院 | Method and device for realizing wireless cognitive sensor network |
| CN103687019B (en) * | 2012-09-25 | 2017-07-14 | 电信科学技术研究院 | The update method and equipment of time division duplex uplink-downlink configuration |
| CN103716846B (en) * | 2012-09-28 | 2018-05-18 | 华为技术有限公司 | A kind of method and apparatus for switching frequency spectrum |
| CN103415024B (en) * | 2013-08-26 | 2016-05-11 | 西安电子科技大学 | A kind of dynamic soft-frequency reuse method based on cognition |
| CN103596288B (en) * | 2013-12-09 | 2017-04-12 | 中国科学院计算技术研究所 | Method and system for LTE system to have access to cognitive spectrum |
| JP6174640B2 (en) * | 2015-08-11 | 2017-08-02 | 京セラ株式会社 | Base station and radio communication method |
| TW201728200A (en) | 2016-01-18 | 2017-08-01 | 新力股份有限公司 | Spectrum management apparatus and method, apparatus and method of base station side and user device side |
-
2008
- 2008-06-18 CN CN2008101230185A patent/CN101330461B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101330461A (en) | 2008-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101330461B (en) | Method for implementing frequency spectrum cavity-pocket efficient utilization based on existing honeycomb communication signaling transmission | |
| RU2344548C2 (en) | System and method of band subchannel control with adaptive modulation and coding (amc) in communication system of multiple access with orthogonal-frequency division | |
| CN110233694B (en) | Method of transmitting/receiving discovery signal | |
| CN104704898B (en) | Method, user equipment and the base station of communication | |
| CN101971662B (en) | Method and device for configuring measurement time slots for mobile terminals in a tdd system | |
| CN101971687B (en) | Ranging procedure identification of enhanced wireless terminal | |
| KR101282508B1 (en) | Method, base station and mobile station for tdd operation in a communication system | |
| CN101043693B (en) | Method and system for inter-cell eliminating interference | |
| CN108521654B (en) | Communication means, device and readable storage medium storing program for executing | |
| CN110431790A (en) | For handling the wireless network node of the communication in cordless communication network, wireless device and in the method wherein executed | |
| CN110476465A (en) | Receive the method and its equipment of synchronization signal | |
| CN109417414A (en) | Suspend mode measurement optimization | |
| CN109478968A (en) | Method and apparatus for the IoT operation in no license frequency spectrum | |
| US8036162B2 (en) | Wireless communication system and wireless communication device | |
| CN103124211B (en) | Full duplex-frequency division duplexing network can operate the method carried out therewith of the user's set of half-duplex-frequency division duplexing | |
| EP3422782B1 (en) | Method for use in data transmission | |
| CN105103631A (en) | Performing inter-frequency measurements on carriers with overlapping bandwidths | |
| CN103731900A (en) | User access mode selecting method under cell heterogeneous network | |
| US11800468B2 (en) | Synchronization signals in 5G | |
| CN110381581A (en) | Configurable downlink and uplink channel in wireless communication system | |
| CN101155167A (en) | Method for placing page indication channel | |
| CN110036582A (en) | Technology for the unified synchronization channel design in new radio | |
| CN113473555A (en) | Measuring method and device | |
| CN101601325A (en) | By adjusting the method and apparatus that SIB7 and SIB14 scheduling frequency reduce delay in call establishment | |
| CN110149725A (en) | A method of utilizing preamble transmissions upstream data |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20150618 |
|
| EXPY | Termination of patent right or utility model |