CN103491546A

CN103491546A - CR-system-based method and device for transmitting system signaling

Info

Publication number: CN103491546A
Application number: CN201210191960.1A
Authority: CN
Inventors: 徐伟杰; 白文岭; 杨宇
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT
Priority date: 2012-06-12
Filing date: 2012-06-12
Publication date: 2014-01-01

Abstract

The invention discloses a CR-system-based method and device for transmitting system signaling. The method comprises the steps that a network side device determines a frequency protection zone of a working band of an authorization system; the network side device sends the system signaling to UE in a CR system on the frequency protection zone. According to the embodiment, under the condition that the signal of the authorization system is retransmitted, the system signaling is sent on the frequency protection zone so that the information of frequency variation of the CR system can be timely notified to all the UE under the condition that broadcast channel performance is fully guaranteed; meanwhile, signaling overheads are saved, the interference in the signal of the authorization system is reduced to the maximum degree, and therefore the user experience of the authorization system and the UE of the CR system are improved.

Description

A kind of system signalling transmission method and equipment based on cognitive radio system

Technical field

The present invention relates to communication technical field, especially related to a kind of system signalling transmission method and equipment based on cognitive radio system.

Background technology

(1) one of important scenes CR(Cognitive Radio, cognitive radio) is chance formula access blank frequency spectrum, and its prerequisite is the harmful interference that protection authoring system business is not subject to the CR system; The CR system need to possess following ability: determine blank frequency spectrum and frequency spectrum switching; Frequency spectrum switching refers to and reappears on the blank frequency spectrum (source working frequency points) of CR system discovery authoring system in current use or the blank frequency spectrum quality of current use while not meeting the CR operation quality requirement, the CR system exits the blank frequency spectrum of current use in time, and the CR system is switched to the process of the upper recovery business of other blank frequency spectrums (target working frequency points); In the frequency spectrum handoff procedure, need to guarantee authoring system not to be caused to harmful interference, and guarantee CR system business continuity.

Further, in the CR system, generally consider in the CR system that base station equipment implements frequency spectrum perception, measure the signal that whether occurs authoring system on the authoring system frequency spectrum and disturbed condition etc., to determine whether the CR system can also continue to work on this frequency spectrum; Once definite this frequency spectrum can not be worked, the CR system need to move on other working bands or frequency range, and needs to be operated in the UE(User Equipment on the work at present frequency band, subscriber equipment) move on new working band or frequency range.

(2) LTE(Long Term Evolution, Long Term Evolution) in system, uplink/downlink control channel distributes.

At present in the LTE system, LTE down control channel distribution schematic diagram as shown in Figure 1 and LTE ascending control channel distribution schematic diagram as shown in Figure 2, down control channel is shone upon on full bandwidth, and ascending control channel PUCCH(Physical Uplink Control Channel, Physical Uplink Control Channel) in the both sides of system bandwidth, shone upon; The single working band of CR system may take the working band of one or more authoring systems, therefore, if the authoring system that the CR system takies is some or a plurality of working bands on authoring system appears signal while again initiating, under LTE control channel transmission means, the uplink/downlink control channel all may suffer serious interference, can cause like this CR system based on LTE to work, the signal of LTE system transmission simultaneously also can bring interference to authoring system.

(3) frequency spectrum is made a concession mechanism.

Frequency spectrum is as shown in Figure 3 made a concession machine-processed schematic flow sheet, in frequency spectrum yielding mechanism, on the authoring system frequency spectrum that the CR system takies, the burst authoring system signal the time, base station equipment can perceive above-mentioned situation, and can notify UE to carry out the frequency spectrum switching by sending the modes such as frequency spectrum switching command afterwards, the UE on current frequency spectrum is switched on Target cell.

In realizing process of the present invention, the inventor finds in prior art at least to exist following problem:

Current employing LTE transmission means transmission spectrum switching command, make the transmission of frequency spectrum switching command be subject to the strong jamming of authorization signal, cause the information such as frequency spectrum switching command can't normal transmission to UE; Then cause UE to discharge in time and authorize frequency spectrum to authoring system, increase the interference time to authoring system, the user who reduces authoring system experiences; And because UE can't receive the frequency spectrum switching command, cause UE can't be switched in time the target frequency, cause UE that Radio Link Failure occurs or increase the time that UE moves to the target frequency, thereby increasing the service outage duration of UE in the frequency spectrum handoff procedure, the user who affects the CR system experiences.

Summary of the invention

The embodiment of the present invention provides a kind of system signalling transmission method and equipment based on cognitive radio system, with the user who improves authoring system and CR system, experiences.

In order to achieve the above object, the embodiment of the present invention provides a kind of system signalling transmission method based on cognitive radio system, comprising:

Network equipment is determined the frequency protection band of the working band of authoring system;

Described network equipment on described frequency protection band to the user equipment (UE) transmitting system signaling in cognitive radio system.

The embodiment of the present invention provides a kind of system signalling transmission method based on cognitive radio system, comprising:

User equipment (UE) is determined the frequency protection band of the working band of authoring system;

Described UE receives the system signaling that network equipment sends to the UE in cognitive radio system on described frequency protection band.

The embodiment of the present invention provides a kind of network equipment, comprising:

Determination module, for the frequency protection band of the working band of determining authoring system;

Sending module, on described frequency protection band to the user equipment (UE) transmitting system signaling in cognitive radio system.

The embodiment of the present invention provides a kind of user equipment (UE), comprising:

Receiver module, the system signaling sent to the UE in cognitive radio system for receive network equipment on described frequency protection band.

Compared with prior art; the embodiment of the present invention at least has the following advantages: in the embodiment of the present invention; in the situation that the authoring system signal is initiated again; by in frequency protection band transmitting system signaling; can be in the situation that fully guarantee the broadcast channel performance; the information in time the CR system frequency changed is notified to all UE; saved again signaling consumption simultaneously; and farthest reduced for example, interference to authoring system (radio data system) signal, thereby improved user's experience of authoring system and CR system.

The accompanying drawing explanation

In order to be illustrated more clearly in technical scheme of the present invention, in below describing embodiment, the accompanying drawing of required use is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is LTE down control channel distribution schematic diagram in prior art;

Fig. 2 is LTE ascending control channel distribution schematic diagram in prior art;

Fig. 3 is that the prior art intermediate frequency spectrum is made a concession machine-processed schematic flow sheet;

Fig. 4 is a kind of system signalling transmission method schematic flow sheet based on cognitive radio system that the embodiment of the present invention one provides;

Fig. 5 A is the schematic diagram of the transition band of the frequency protection band that proposes in the embodiment of the present invention one signal spectrum that only comprises two adjacent broadcast television bands;

Fig. 5 B is the schematic diagram that the frequency protection band that proposes in the embodiment of the present invention one only comprises the reserved blank frequency band between the system bandwidth of two adjacent broadcast television bands;

Fig. 5 C is the schematic diagram of the blank frequency band sum of reserving between the system bandwidth of transition band and two adjacent broadcast television bands of the frequency protection band that proposes in the embodiment of the present invention one signal spectrum that comprises two adjacent broadcast television bands;

Fig. 6 A is in continuous 3 authoring system frequency bands of adopting of the CR system that proposes in the embodiment of the present invention one, when the transmission of authoring system signal is arranged on the authorized frequency bands in the middle of being positioned at, and the schematic diagram of the CA mode in the down control channel transmission mode;

Fig. 6 B is in continuous 3 authoring system frequency bands of adopting of the CR system that proposes in the embodiment of the present invention one, when the transmission of authoring system signal is arranged on the authorized frequency bands in the middle of being positioned at, the schematic diagram of (frequency spectrum is discontinuous) the control channel transmission means in the down control channel transmission mode;

Fig. 6 C is in continuous 3 authoring system frequency bands of adopting of the CR system that proposes in the embodiment of the present invention one, when the transmission of authoring system signal is arranged on the authorized frequency bands in the middle of being positioned at, and the schematic diagram of ascending control channel transmission means;

Fig. 6 D is on the frequency band of the CR system transmission that proposes in the embodiment of the present invention one, while on one or two channels that are positioned at both sides on three adjacent television bands, television signal transmission being arranged, and the down control channel transmission means schematic diagram that bandwidth narrows down;

Fig. 6 E is on the frequency band of the CR system transmission that proposes in the embodiment of the present invention one, while on one or two channels that are positioned at both sides on three adjacent television bands, television signal transmission being arranged, and the ascending control channel transmission means schematic diagram that bandwidth narrows down;

Fig. 7 is the code check gradual change schematic diagram of the chnnel coding of proposition in the embodiment of the present invention one;

Fig. 8 is the structural representation of a kind of network equipment of providing of the embodiment of the present invention two;

Fig. 9 is the structural representation of a kind of subscriber equipment of providing of the embodiment of the present invention three.

Embodiment

Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.

Embodiment mono-

The embodiment of the present invention one provides a kind of system signalling transmission method based on cognitive radio system, and as shown in Figure 4, the method comprises the following steps:

Step 401, network equipment (as base station equipment, eNB etc.) is determined the frequency protection band of the working band of authoring system.

Step 402, network equipment is in the upper UE transmitting system signaling in cognitive radio system of frequency protection band (the frequency protection bands of one or more successive bands).

Step 403, UE receives the system signaling that network equipment sends to the UE in cognitive radio system on the frequency protection band.

In the embodiment of the present invention, UE, after the frequency protection band of the working band of having determined authoring system, can receive the system signaling that network equipment sends on the frequency protection band.

Below to the information of carrying in frequency protection band, system signaling, frequency range/frequency band indicating mode, control channel indicating mode, for the coded system of the physical channel of bearing system signaling, be elaborated for the mode of the cycle configuration of the physical channel of bearing system signaling, the informing mechanism of system signaling.

The said process provided in order more clearly to set forth the embodiment of the present invention, take the CR(cognitive radio) system takies 3 digital TV band and carries out related description as example, and three digital television bands are designated as television band 1, television band 2, television band 3 successively.

(1) frequency protection band; Wherein, in the embodiment of the present invention, need to utilize the frequency protection band to realize the transmitting procedure of system signaling.

In the embodiment of the present invention, the frequency protection band of nearby frequency bands that can be used for the physical channel of transmission bearer said system signaling includes but not limited to: the transition band or the part transition band that only comprise the signal spectrum of authoring system frequency band; Perhaps, only comprise blank frequency band or the blank frequency band of part of reserving between the system bandwidth of authoring system frequency band; The partial-band of reserved blank frequency band or transition band and the blank frequency band sum of reserving between the system bandwidth of the transition band of the signal spectrum that perhaps, comprises the authoring system frequency band and authoring system frequency band; Wherein, the transition band of this frequency spectrum refers to maximum effective working band edge of authoring system frequency band and the frequency band between the system bandwidth edge.

Frequency protection band distribution mode schematic diagram as shown in Fig. 5 A, 5B and 5C, in Fig. 5 A, the frequency protection band only comprises the transition band (or part transition band) of the signal spectrum of two adjacent broadcast television bands; In Fig. 5 B, the frequency protection band only comprises the reserved blank frequency band (or the blank frequency band of part) between the system bandwidth of two adjacent broadcast television bands; In Fig. 5 C, the reserved blank frequency band sum between the system bandwidth of the transition band of the signal spectrum that the frequency protection band comprises two adjacent broadcast television bands and two adjacent broadcast television bands, or the partial-band of both sums.

In the embodiment of the present invention, system signaling is transmitted on one or more frequency protection bands; And the frequency protection band position of the number of the frequency protection band that system signaling takies and use is arranged by network equipment and UE, or is notified to UE by network equipment, or obtained by the mode of repeatedly attempting detecting by UE.Based on this, the mode that UE obtains frequency protection band position comprises: the frequency protection band number that physical channel takies and frequency protection band position are by network equipment and UE agreement; The different frequency protection band number of the each trial of UE, repeatedly attempt in a plurality of possible frequency protection band positions detecting and determine; Network equipment is by signaling (as system broadcasts) notice UE, network equipment in available normal operation chance (frequency range taken as the CR system is without any the situation of TV signal) by this signalling to UE.

(2) information of carrying in system signaling.

In the embodiment of the present invention, system signaling is specially broadcast; Or system message; Or dedicated signaling (as RRC(Radio Resource Control, Radio Resource is controlled) signaling); And specifically carry following information in system signaling: the available transmission band information; Perhaps, available transmission band information and control channel transmission mode information; Perhaps, available transmission band information; Perhaps, available transmission band information and control channel transmission mode information; Perhaps, available transmission band information and available transmission band information; Perhaps, available transmission band information, available transmission band information and control channel transmission mode information; Perhaps, frequency spectrum switching command or community switching command; Perhaps, for carrying out the configuration information of frequency spectrum switching.

Further, by the information of carrying in the said system signaling, can notify UE current system working frequency range and/or working band in cognitive radio system, the information such as down control channel transmission mode and/or ascending control channel transmission mode, and obtain working frequency range and/or working band by UE, and in conjunction with down control channel transmission mode and/or ascending control channel transmission mode, thereby be directly switch to target frequency bands and/or target band, and directly carry out the transmission of follow-up signaling and data.

It should be noted that UE need to determine the control channel transmission mode that network side adopts jointly in conjunction with available transmission band information and/or available transmission band information and control channel transmission mode information; For example, when authoring system frequency band 1 is subject to the interference of authoring system signal, when network side only adopts authoring system frequency band 2,3 to carry out the business transmission, up/down row control channel all can adopt traditional approach to be shone upon, but bandwidth all is based on available bandwidth resources corresponding under two authoring system frequency bands, carries out the mapping of above-mentioned channel.

In addition, UE is after the physical channel of the system signaling that reads CR system bearing cognitive radio system, can obtain available transmission band information and/or available transmission band information from this physical channel, and the concrete mode adopted when this physical channel obtains the transmission of up/down row control channel, then UE can carry out the reception of down control channel and the transmission of ascending control channel, and the transmission of up-downgoing business.

(3) frequency range/frequency band indicating mode; Wherein, in a kind of optional execution mode of the embodiment of the present invention, system signaling can carry frequency range/frequency band indication information.

When the network equipment of CR system perceives authoring system again initiate business on certain CR system is being carried out the frequency band of communication, the CR system need to be abandoned carrying out communication on authoring system is initiated the frequency band of business again, and adopts other frequency bands in this frequency range to carry out communication (now needing to indicate the available transmission band information) or the CR system need to move to the enterprising industry business transmission of other frequency ranges (now needing to indicate available transmission band information or available transmission band information and available transmission band information); Based on this, in order to keep the continuity of communication, the network equipment of CR system need to be notified available transmission band information and/or available transmission band information (being the working band/band information of current system) to UE.

The indicating mode of available transmission band information comprises: by adopting the bitmap(bitmap) mode by the corresponding frequency band of a bit of bit sequence, and mean that by the first bit value (as 1) corresponding frequency band is the available transmission frequency band, mean that by the second bit value (as 0) corresponding frequency band is unavailable transmission band; Perhaps, directly notify the frequency band number of available transmission frequency band, and concrete band information corresponding to frequency band number be by network equipment and UE agreement, or by network equipment by signaling to UE.

The indicating mode of available transmission band information comprises: the mode by adopting bitmap is by the corresponding frequency range of a bit of bit sequence, and mean that by the 3rd bit value (as 1) corresponding frequency band is the available transmission frequency range, mean that by the 4th bit value (as 0) corresponding frequency band is unavailable transmission band; Perhaps, directly notify the frequency range numbering of available transmission frequency range, and concrete band information corresponding to frequency range numbering arranged with UE by network equipment, or network equipment by signaling to UE.

In the embodiment of the present invention, can transmit the broadcast television bands information that the CR system takies (its be carried on system signaling in) on the frequency protection band; For example, can adopt the mode of bitmap to carry out the indication of available transmission frequency band; Specific as follows: if the CR system takies N broadcast television bands, which is being used by the CR system can to adopt N bit to mean this N broadcast television bands; Particularly, the corresponding frequency band of each bit, as bit value means on this frequency band to be used by the CR system at present for " 1 ", bit value means that for " 0 " on this frequency band, current CR system can not be used.In addition, also can be in system signaling directly the notice frequency band number to UE, and concrete band information corresponding to this frequency band number arranged with UE by network equipment or by network equipment by signaling to UE.

In the embodiment of the present invention, can transmit the radio and television band information that the CR system takies (its be carried on system signaling in) on the frequency protection band; For example, can adopt the mode of bitmap to carry out the indication of available transmission frequency range; Specific as follows: if the CR system takies N radio and television frequency range, which is being used by the CR system can to adopt N bit to mean this N radio and television frequency range; Particularly, the corresponding frequency range of each bit, as bit value means on this frequency range to be used by the CR system at present for " 1 ", bit value means that for " 0 " on this frequency range, current CR system can not be used.In addition, also can in system signaling, directly notify frequency range to number to UE, and concrete band information corresponding to this frequency range numbering arranged with UE by network equipment or by network equipment by signaling to UE.

Certainly, in actual applications, also can together with the information bit of available transmission frequency range and available transmission frequency band, notify to UE, to repeating no more in this embodiment of the present invention.

(4) control channel indicating mode; Wherein, in a kind of optional execution mode of the embodiment of the present invention, system signaling can carry the control channel indication information.

Because the appearance of a plurality of authoring system signals has randomness, may occur that at any time the one or more frequency bands on a plurality of authoring system frequency bands that the CR system takies are authorized to the situation that system signal is resumed, therefore, the CR system need to be transmitted the control channel transmission mode that upgrades in time according to whether carrying out business on a plurality of frequency bands of authoring system in working frequency range, and by system signaling, the control channel transmission mode information is indicated to UE, make UE after getting the control channel transmission mode, can carry out follow-up signaling or transfer of data.

Initiate situation based on the authoring system signal, the control channel transmission mode is as follows:

All with no authorized system signal transmission on a plurality of authoring system frequency bands that A, CR system adopt; In such cases, the transmission of CR system can adopt existing mode to carry out the control channel transmission of LTE.

In continuous 3 authoring system frequency bands that B, CR system adopt, the transmission of authoring system signal is arranged on the authorized frequency bands in the middle of being positioned at; In such cases, because the frequency spectrum that can transmit for LTE is no longer continuous, so the control channel transmission needs to adopt new mode.

The down control channel transmission mode is: the CA(carrier aggregation) mode or (frequency spectrum is discontinuous) control channel transmission means; It is example that the CR system of take takies 3 continuous authoring system frequency bands; the schematic diagram of CA mode as shown in Figure 6A (not embodying boundary belt in figure), and the schematic diagram of (frequency spectrum is discontinuous) the control channel transmission means shown in Fig. 6 B (not embodying boundary belt in figure).

For the CA mode, because the authoring system signal has taken the intermediate frequency band in three frequency bands, therefore control channel can not be transmitted on this frequency band, and control channel can be on three adjacent authoring system frequency bands first frequency band transmission, also can on the 3rd frequency band on three adjacent authoring system frequency bands, transmit, and control channel can be realized the scheduling of the frequency resource on same carrier wave, also can realize the scheduling across carrier wave.It should be noted that the present embodiment is to be distributed in a plurality of frequency bands in same carrier wave frequency range as example, also can realize the similar operations across frequency range in the specific implementation process.

For (frequency spectrum is discontinuous) control channel transmission means, the transmission of control channel still adopts existing mode, just at front several OFDM(Orthogonal Frequency Division Multiplexing, OFDM) in symbol, the mid portion of frequency domain can not be for control information transmission, and need to be on the frequency band of both sides control information transmission.

The ascending control channel transmission mode is: ascending control channel can adopt existing mode, ascending control channel transmission means schematic diagram as shown in Figure 6 C (not embodying boundary belt in figure).

On the frequency band of C, the transmission of CR system, on one or two channels that are positioned at both sides on three adjacent television bands, television signal transmission is arranged; In such cases, the LTE system can with frequency spectrum narrow down, so the frequency spectrum of control channel transmission also needs to narrow down.

The down control channel transmission mode is: the down control channel transmission means that bandwidth narrows down; the down control channel transmission means schematic diagram that bandwidth as shown in Figure 6 D narrows down (not embodying boundary belt in figure); under this kind of mode; down control channel adopts existing mode, be only whole CR system can with bandwidth narrowed down.

The ascending control channel transmission mode is: the ascending control channel transmission means that bandwidth narrows down; the ascending control channel transmission means schematic diagram that bandwidth as shown in Fig. 6 E narrows down (not embodying boundary belt in figure); under this kind of mode; ascending control channel adopts existing mode, be only whole CR system can with bandwidth narrowed down.

On the frequency band of D, the transmission of CR system, at all television channels, television signal transmission is all arranged; In such cases, on all television bands that take due to the CR system, television signal transmission is arranged, therefore, except the above-mentioned channel for the bearing system signaling need to transmit, no longer carry out the transmission of other control channels and signal.

In the embodiment of the present invention, for above-mentioned control channel transmission mode, the indicating mode of the control channel transmission mode information in system signaling includes but not limited to: by setting up the mapping relations of binary bit sequence and control channel transmission mode, and corresponding binary bit sequence is indicated to UE by the control channel transmission mode information; And the process of setting up the mapping relations of binary bit sequence and control channel transmission mode further comprises: set up respectively the mapping relations of binary bit sequence and ascending control channel transmission mode and the mapping relations of binary bit sequence and down control channel transmission mode; Perhaps, set up the mapping relations of binary bit sequence and ascending control channel transmission mode and down control channel transmission mode; Wherein, the mapping relations of above-mentioned binary bit sequence and control channel transmission mode are by network equipment and UE agreement, or by network equipment by signaling to UE.

Below the indicating mode of control channel transmission mode is elaborated.

Open up a control channel transmission mode indication territory on the physical channel for the bearing system signaling of CR system, in order to indicating downlink control channel transmission mode, alternatively, also can indicate the ascending control channel transmission mode simultaneously.Particularly, as shown in Table 1 and Table 2, mode indicating downlink control channel transmission mode and the ascending control channel transmission mode (bit number and the transmission means that adopt in table 1 and table 2 are example, are not limited to mode shown in this table) that can adopt up-downgoing to indicate respectively; Perhaps, as shown in table 3, also can adopt the mode indicating downlink control channel transmission mode of up-downgoing joint instructions and ascending control channel transmission mode (bit number and the transmission means that adopt in table 3 are example, are not limited to mode shown in this table).

Table 1 down control channel transmission mode indication territory

Figure 2012101919601100002DEST_PATH_IMAGE001

Table 2 ascending control channel transmission mode indication territory

Figure 2012101919601100002DEST_PATH_IMAGE002

Table 3 uplink/downlink control channel transmission mode joint instructions territory

Figure 2012101919601100002DEST_PATH_IMAGE003

(5) for the coded system of the physical channel of bearing system signaling; Wherein, in the embodiment of the present invention, need to utilize the coded system of physical channel to realize the transmitting procedure of system signaling.

In the embodiment of the present invention, physical channel for the bearing system signaling can be mapped in the frequency protection band, and because the physical channel for the bearing system signaling transmitted on the frequency protection band may be subject to the interference of authoring system signal, therefore for transmitting, can consider that this physical channel of transmission (be take Fig. 5 C as example on the frequency protection band between a plurality of authoring system frequency bands, it has three authoring system frequency bands, there are 2 frequency protection bands in the middle of being positioned at and 2 frequency protection bands at edge), to support this physical channel to adopt low-order-modulated mode and lower transmission code rate.

In the embodiment of the present invention, the coded system of physical channel specifically can include but not limited to: repeated encoding mode or RM(Reed Muller) coded system or along with the decay of the transition band of the frequency spectrum of authoring system signal becomes large, the coded system that the broadcast channel code check of cognitive radio system edges up (application scenarios for frequency protection with the transition band of frequency spectrum); And the information such as the coded system of physical channel and code check are by network equipment and UE agreement, or by network equipment by signaling to UE.

The code check gradual change schematic diagram of chnnel coding as shown in Figure 7, decay with employing along with the transition band of the frequency spectrum of authoring system signal becomes greatly, the mode that the physical channel code check of CR system edges up is encoded, and it is example that the physical channel of CR system of take takies a frequency protection band, by adopting this kind of coded system, both can take full advantage of the system signaling of the band resource transmitting cognitive radio system of frequency protection band, can reduce again the potential interference of authoring system signal to the physical channel of bearing system signaling, even also can guarantee the signalling performance of CR system when the authoring system signal occurs.

(6) for the mode of the cycle configuration of the physical channel of bearing system signaling; Wherein, in a kind of optional execution mode of the embodiment of the present invention, can utilize the mode of the cycle configuration of physical channel to realize the transmitting procedure of system signaling.

In the embodiment of the present invention, physical channel for the bearing system signaling can adopt the cycle configuration mode, and the specific configuration information of cycle configuration (as cycle size, the radio frames occurred, subframe etc.) can be arranged with UE by network equipment, or by network equipment by signaling to UE.Definite mode in the cycle that further, should adopt for the physical channel of bearing system signaling includes but not limited to: utilize cognitive radio system to determine the perception velocities ability of spectral change.

It should be noted that, the cycle configuration mode that above-mentioned physical channel adopts, can on one or more subframes that certain radio frames is fixed in each cycle, be sent, and the concrete cycle can be as required a radio frames, two radio frames ... N radio frames, its cycle is less, and network side can be more timely notified the spectral change information of the CR system known to UE.

In addition, the cycle configuration of the physical channel of this bearing system signaling also can be considered the perception velocities ability of CR system to spectral change, if the CR system just needs the regular hour to the perception self of spectral change, this section interior information to more times transmission of UE of detecting period may be also inaccurate (as the authoring system signal has just started emission, the CR system did not also perceive in the time period of this signal).

(7) informing mechanism of system signaling; Wherein, in a kind of preferred implementation of the embodiment of the present invention, can utilize the send and receive mechanism of following system signaling to realize the transmitting procedure of system signaling.

In the embodiment of the present invention, network equipment comprises to the UE transmitting system signaling in cognitive radio system on the frequency protection band: network equipment is detecting on the work at present frequency band has the authoring system signal to occur or while finding that communication quality that (be authoring system signal will in the very near appearance sometime in future) or discovery work at present frequency band will appear in the authoring system signal in Preset Time is lower than predetermined threshold value (being the communication quality degradation), after for the nearest available delivery time (depending on the transmission cycle configuration of physical channel) of the physical channel of bearing system signaling and in follow-up one period fixed time, on the frequency protection band to the UE transmitting system signaling in cognitive radio system.In addition; UE receives the system signaling that network equipment sends to the UE in cognitive radio system and comprises on the frequency protection band: UE is before calling time; the delivery time (depending on the transmission cycle configuration of physical channel) of the nearest physical channel for the system signaling that carries cognitive radio system apart from calling time, the system signaling that the Sampling network side apparatus sends to the UE in cognitive radio system on the frequency protection band.

Concrete, the physical channel of above-mentioned bearing system signaling, network equipment sends (or periodically sending) sustainably on the frequency protection band, but frequent initiation and the frequent event of change right and wrong due to the authoring system signal, therefore the way of saving resource is: at network equipment, detect on the work at present frequency band and have the authoring system signal to occur or find that the authoring system signal will be when future very near occurs sometime or find the communication quality degradation of work at present frequency band, follow the change working band, after this network equipment is recently sending this physical channel in the delivery time of available physical channel and follow-up a period of time on the frequency protection band.

Further, the working band information that can use in order to obtain in time current system, the physical channel for the bearing system signaling is read in the monitoring that UE can continue, but can seriously consume the electric power of UE like this; For power saving, UE is after the physical channel by reading the bearing system signaling obtains current band information, this physical channel is read in monitoring that can be no longer lasting, but before the calling time of UE, (this is because the physical channel of the calling time of UE and bearing system signaling is not necessarily overlapping in time to the delivery time of the physical channel of nearest bearing system signaling apart from the UE calling time, the general first reading system signaling of UE possibility, read again paging), first read the physical channel of bearing system signaling; The system signaling that this physical channel (illustrative system working band not change, network equipment does not send this physical channel) or this physical channel send if read does not change, and UE is directly according to working band configuration reading gating message before this; If UE finds that by the reading system signaling spectrum information of its indication changes, UE need to indicate reading gating message on new working band, thereby can guarantee the correct beep-page message that obtains.

Embodiment bis-

Inventive concept based on same with said method, also provide a kind of network equipment in the embodiment of the present invention, as shown in Figure 8, this network equipment comprises:

Determination module 11, for the frequency protection band of the working band of determining authoring system;

Sending module 12, on described frequency protection band to the user equipment (UE) transmitting system signaling in cognitive radio system.

In the embodiment of the present invention, described system signaling is transmitted on one or more frequency protection bands; And the number of the frequency protection band that described system signaling takies and the frequency protection band of use are arranged by network equipment and UE, or are notified to UE by network equipment, or obtained by the mode of repeatedly attempting detecting by UE; And described frequency protection band is specially: the transition band or the part transition band that only comprise the signal spectrum of authoring system frequency band; Perhaps, only comprise blank frequency band or the blank frequency band of part of reserving between the system bandwidth of authoring system frequency band; Perhaps, reserved blank frequency band between the system bandwidth of the transition band of the signal spectrum that comprises the authoring system frequency band and authoring system frequency band, or, the partial-band of described transition band and described reserved blank frequency band sum; Wherein, the transition band of described frequency spectrum refers to maximum effective working band edge of authoring system frequency band and the frequency band between the system bandwidth edge.

In the embodiment of the present invention, described system signaling is specially: broadcast; Perhaps, system message; Perhaps, dedicated signaling; And specifically carry following information in described system signaling: the available transmission band information; Perhaps, available transmission band information and control channel transmission mode information; Perhaps, available transmission band information; Perhaps, available transmission band information and control channel transmission mode information; Perhaps, available transmission band information and available transmission band information; Perhaps, available transmission band information, available transmission band information and control channel transmission mode information; Perhaps, frequency spectrum switching command or community switching command; Perhaps, for carrying out the configuration information of frequency spectrum switching.

In the embodiment of the present invention, the indicating mode of described available transmission band information comprises: the mode by adopting bitmap bitmap is by the corresponding frequency band of a bit of bit sequence, and mean that by the first bit value corresponding frequency band is the available transmission frequency band, mean that by the second bit value corresponding frequency band is unavailable transmission band; Perhaps, directly notify the frequency band number of available transmission frequency band, and concrete band information corresponding to described frequency band number be by network equipment and UE agreement, or by network equipment by signaling to UE; The indicating mode of described available transmission band information comprises: the mode by adopting bitmap is by the corresponding frequency range of a bit of bit sequence, and mean that by the 3rd bit value corresponding frequency band is the available transmission frequency range, mean that by the 4th bit value corresponding frequency band is unavailable transmission band; Perhaps, directly notify the frequency range numbering of available transmission frequency range, and concrete band information corresponding to described frequency range numbering arranged with UE by network equipment, or network equipment by signaling to UE.

In the embodiment of the present invention, the indicating mode of described control channel transmission mode information comprises: by setting up the mapping relations of binary bit sequence and control channel transmission mode, and corresponding binary bit sequence is indicated to UE by the control channel transmission mode information; The described mapping relations of setting up binary bit sequence and control channel transmission mode comprise: set up respectively the mapping relations of binary bit sequence and ascending control channel transmission mode and the mapping relations of binary bit sequence and down control channel transmission mode; Perhaps, set up the mapping relations of binary bit sequence and ascending control channel transmission mode and down control channel transmission mode; And the mapping relations of described binary bit sequence and control channel transmission mode are by network equipment and UE agreement, or by network equipment by signaling to UE.

In the embodiment of the present invention, be mapped in described frequency protection band for the physical channel that carries described system signaling, and the coded system of described physical channel is specially: repeated encoding mode or RM coded system or along with the decay of the transition band of the frequency spectrum of authoring system signal becomes large, the coded system that the broadcast channel code check of cognitive radio system edges up; And the coded system of described physical channel is by network equipment and UE agreement, or by network equipment by signaling to UE.

In the embodiment of the present invention, for the physical channel that carries described system signaling, adopt the cycle configuration mode, and the specific configuration information of cycle configuration arranged with UE by network equipment, or by network equipment by signaling to UE; And definite mode in the cycle that described physical channel adopts comprises: utilize cognitive radio system to determine the perception velocities ability of spectral change.

In the embodiment of the present invention; described sending module 12; specifically for having the authoring system signal to occur or while finding that communication quality that the work at present frequency band will appear or find in the authoring system signal in Preset Time is lower than predetermined threshold value detecting on the work at present frequency band; after for the nearest available delivery time of the physical channel that carries described system signaling and in follow-up one period fixed time, on described frequency protection band to the UE transmitting system signaling in cognitive radio system.

Wherein, the modules of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.

Embodiment tri-

Inventive concept based on same with said method, also provide a kind of subscriber equipment in the embodiment of the present invention, as shown in Figure 9, this subscriber equipment comprises:

Determination module 21, for the frequency protection band of the working band of determining authoring system;

Receiver module 22, the system signaling sent to the UE in cognitive radio system for receive network equipment on described frequency protection band.

In the embodiment of the present invention; described receiver module 12; specifically for before calling time; the delivery time of the physical channel for the system signaling that carries cognitive radio system that the described calling time of distance is nearest, the system letter that the Sampling network side apparatus sends to the UE in cognitive radio system on described frequency protection band.

Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential general hardware platform by software and realize, can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Understanding based on such, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, or the network equipment etc.) the described method of execution each embodiment of the present invention.

It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.

It will be appreciated by those skilled in the art that the module in the device in embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be merged into a module, also can further split into a plurality of submodules.

The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.

Above disclosed be only several specific embodiment of the present invention, still, the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.

Claims

1. a kind of system signalling transmission method based on cognitive radio system, is characterized in that, comprising:

network equipment is determined the frequency protection band of the working band of authoring system;

described network equipment on described frequency protection band to the user equipment (UE) transmitting system signaling in cognitive radio system.

2. the method of claim 1, is characterized in that, described frequency protection band is specially:

the transition band or the part transition band that only comprise the signal spectrum of authoring system frequency band; Perhaps,

only comprise blank frequency band or the blank frequency band of part reserved between the system bandwidth of authoring system frequency band; Perhaps,

reserved blank frequency band between the system bandwidth of the transition band of the signal spectrum that comprises the authoring system frequency band and authoring system frequency band, or, the partial-band of described transition band and described reserved blank frequency band sum;

wherein, the transition band of described frequency spectrum refers to maximum effective working band edge of authoring system frequency band and the frequency band between the system bandwidth edge.

3. method as claimed in claim 1 or 2, is characterized in that, described system signaling is transmitted on one or more frequency protection bands; And the number of the frequency protection band that described system signaling takies and the frequency protection band of use are arranged by network equipment and UE, or are notified to UE by network equipment, or obtained by the mode of repeatedly attempting detecting by UE.

4. the method of claim 1, is characterized in that, described system signaling is specially:

broadcast; Perhaps,

system message; Perhaps,

dedicated signaling.

5. method as described as claim 1 or 4, is characterized in that, specifically carries following information in described system signaling:

the available transmission band information; Perhaps,

available transmission band information and control channel transmission mode information; Perhaps,

the available transmission band information; Perhaps,

available transmission band information and available transmission band information; Perhaps,

available transmission band information, available transmission band information and control channel transmission mode information; Perhaps,

frequency spectrum switching command or community switching command; Perhaps,

for carrying out the configuration information of frequency spectrum switching.

6. method as claimed in claim 5, is characterized in that,

the indicating mode of described available transmission band information comprises: the mode by adopting bitmap bitmap is by the corresponding frequency band of a bit of bit sequence, and mean that by the first bit value corresponding frequency band is the available transmission frequency band, mean that by the second bit value corresponding frequency band is unavailable transmission band; Perhaps, directly notify the frequency band number of available transmission frequency band, and concrete band information corresponding to described frequency band number be by network equipment and UE agreement, or by network equipment by signaling to UE;

the indicating mode of described available transmission band information comprises: the mode by adopting bitmap is by the corresponding frequency range of a bit of bit sequence, and mean that by the 3rd bit value corresponding frequency band is the available transmission frequency range, mean that by the 4th bit value corresponding frequency band is unavailable transmission band; Perhaps, directly notify the frequency range numbering of available transmission frequency range, and concrete band information corresponding to described frequency range numbering arranged with UE by network equipment, or network equipment by signaling to UE.

7. method as claimed in claim 5, is characterized in that, the indicating mode of described control channel transmission mode information comprises:

by setting up the mapping relations of binary bit sequence and control channel transmission mode, and corresponding binary bit sequence is indicated to UE by the control channel transmission mode information.

8. method as claimed in claim 7, is characterized in that, the described mapping relations of setting up binary bit sequence and control channel transmission mode comprise:

set up respectively the mapping relations of binary bit sequence and ascending control channel transmission mode and the mapping relations of binary bit sequence and down control channel transmission mode; Perhaps, set up the mapping relations of binary bit sequence and ascending control channel transmission mode and down control channel transmission mode;

and the mapping relations of described binary bit sequence and control channel transmission mode are by network equipment and UE agreement, or by network equipment by signaling to UE.

9. the method of claim 1, it is characterized in that, be mapped in described frequency protection band for the physical channel that carries described system signaling, and the coded system of described physical channel is specially: repeated encoding mode or RM coded system or along with the decay of the transition band of the frequency spectrum of authoring system signal becomes large, the coded system that the broadcast channel code check of cognitive radio system edges up;

and the coded system of described physical channel is by network equipment and UE agreement, or by network equipment by signaling to UE.

10. the method of claim 1, is characterized in that, for the physical channel that carries described system signaling, adopts the cycle configuration mode, and the specific configuration information of cycle configuration arranged with UE by network equipment, or by network equipment by signaling to UE.

11. method as claimed in claim 10, is characterized in that, definite mode in the cycle that described physical channel adopts comprises: utilize cognitive radio system to determine the perception velocities ability of spectral change.

12. the method of claim 1, is characterized in that, described network equipment to the user equipment (UE) transmitting system signaling in cognitive radio system, comprising on described frequency protection band:

described network equipment has the authoring system signal to occur or while finding that communication quality that the work at present frequency band will appear or find in the authoring system signal in Preset Time is lower than predetermined threshold value detecting on the work at present frequency band; after for the nearest available delivery time of the physical channel that carries described system signaling and in follow-up one period fixed time, on described frequency protection band to the UE transmitting system signaling in cognitive radio system.

13. a kind of system signalling transmission method based on cognitive radio system, is characterized in that, comprising:

user equipment (UE) is determined the frequency protection band of the working band of authoring system;

described UE receives the system signaling that network equipment sends to the UE in cognitive radio system on described frequency protection band.

14. method as claimed in claim 13, is characterized in that, described frequency protection band is specially:

15. method as described as claim 13 or 14, is characterized in that, described system signaling is transmitted on one or more frequency protection bands; And the number of the frequency protection band that described system signaling takies and the frequency protection band of use are arranged by network equipment and UE, or are notified to UE by network equipment, or obtained by the mode of repeatedly attempting detecting by UE.

16. method as claimed in claim 13, is characterized in that, described system signaling is specially:

broadcast; Perhaps,

system message; Perhaps,

dedicated signaling.

17. method as described as claim 13 or 16, is characterized in that, specifically carries following information in described system signaling:

the available transmission band information; Perhaps,

18. method as claimed in claim 17, is characterized in that,

19. method as claimed in claim 17, is characterized in that, the indicating mode of described control channel transmission mode information comprises:

20. method as claimed in claim 19, is characterized in that, the described mapping relations of setting up binary bit sequence and control channel transmission mode comprise:

21. method as claimed in claim 13, it is characterized in that, be mapped in described frequency protection band for the physical channel that carries described system signaling, and the coded system of described physical channel is specially: repeated encoding mode or RM coded system or along with the decay of the transition band of the frequency spectrum of authoring system signal becomes large, the coded system that the broadcast channel code check of cognitive radio system edges up;

22. method as claimed in claim 13, it is characterized in that, adopt the cycle configuration mode for the physical channel that carries described system signaling, and the specific configuration information of cycle configuration arranged with UE by network equipment, or by network equipment by signaling to UE.

23. method as claimed in claim 22, is characterized in that, definite mode in the cycle that described physical channel adopts comprises: utilize cognitive radio system to determine the perception velocities ability of spectral change.

24. method as claimed in claim 13, is characterized in that, described UE receives the system signaling that network equipment sends to the UE in cognitive radio system on described frequency protection band, comprising:

described UE is before calling time; the delivery time of the physical channel for the system signaling that carries cognitive radio system that the described calling time of distance is nearest, the system signaling that the Sampling network side apparatus sends to the UE in cognitive radio system on described frequency protection band.

25. a kind of network equipment, is characterized in that, comprising:

determination module, for the frequency protection band of the working band of determining authoring system;

sending module, on described frequency protection band to the user equipment (UE) transmitting system signaling in cognitive radio system.

26. network equipment as claimed in claim 25, is characterized in that, described system signaling is transmitted on one or more frequency protection bands; And the number of the frequency protection band that described system signaling takies and the frequency protection band of use are arranged by network equipment and UE, or are notified to UE by network equipment, or obtained by the mode of repeatedly attempting detecting by UE;

and described frequency protection band is specially: the transition band or the part transition band that only comprise the signal spectrum of authoring system frequency band; Perhaps, only comprise blank frequency band or the blank frequency band of part of reserving between the system bandwidth of authoring system frequency band; Perhaps, reserved blank frequency band between the system bandwidth of the transition band of the signal spectrum that comprises the authoring system frequency band and authoring system frequency band, or, the partial-band of described transition band and described reserved blank frequency band sum; Wherein, the transition band of described frequency spectrum refers to maximum effective working band edge of authoring system frequency band and the frequency band between the system bandwidth edge.

27. network equipment as claimed in claim 25, is characterized in that, described system signaling is specially: broadcast; Perhaps, system message; Perhaps, dedicated signaling;

and specifically carry following information in described system signaling: the available transmission band information; Perhaps, available transmission band information and control channel transmission mode information; Perhaps, available transmission band information; Perhaps, available transmission band information and control channel transmission mode information; Perhaps, available transmission band information and available transmission band information; Perhaps, available transmission band information, available transmission band information and control channel transmission mode information; Perhaps, frequency spectrum switching command or community switching command; Perhaps, for carrying out the configuration information of frequency spectrum switching.

28. network equipment as claimed in claim 27, it is characterized in that, the indicating mode of described available transmission band information comprises: the mode by adopting bitmap bitmap is by the corresponding frequency band of a bit of bit sequence, and mean that by the first bit value corresponding frequency band is the available transmission frequency band, mean that by the second bit value corresponding frequency band is unavailable transmission band; Perhaps, directly notify the frequency band number of available transmission frequency band, and concrete band information corresponding to described frequency band number be by network equipment and UE agreement, or by network equipment by signaling to UE;

29. network equipment as claimed in claim 27, it is characterized in that, the indicating mode of described control channel transmission mode information comprises: by setting up the mapping relations of binary bit sequence and control channel transmission mode, and corresponding binary bit sequence is indicated to UE by the control channel transmission mode information;

the described mapping relations of setting up binary bit sequence and control channel transmission mode comprise: set up respectively the mapping relations of binary bit sequence and ascending control channel transmission mode and the mapping relations of binary bit sequence and down control channel transmission mode; Perhaps, set up the mapping relations of binary bit sequence and ascending control channel transmission mode and down control channel transmission mode;

30. network equipment as claimed in claim 25, it is characterized in that, be mapped in described frequency protection band for the physical channel that carries described system signaling, and the coded system of described physical channel is specially: repeated encoding mode or RM coded system or along with the decay of the transition band of the frequency spectrum of authoring system signal becomes large, the coded system that the broadcast channel code check of cognitive radio system edges up;

31. network equipment as claimed in claim 25, it is characterized in that, adopt the cycle configuration mode for the physical channel that carries described system signaling, and the specific configuration information of cycle configuration arranged with UE by network equipment, or by network equipment by signaling to UE;

and definite mode in the cycle that described physical channel adopts comprises: utilize cognitive radio system to determine the perception velocities ability of spectral change.

32. network equipment as claimed in claim 25, is characterized in that,

described sending module; specifically for having the authoring system signal to occur or while finding that communication quality that the work at present frequency band will appear or find in the authoring system signal in Preset Time is lower than predetermined threshold value detecting on the work at present frequency band; after for the nearest available delivery time of the physical channel that carries described system signaling and in follow-up one period fixed time, on described frequency protection band to the UE transmitting system signaling in cognitive radio system.

33. a kind of user equipment (UE), is characterized in that, comprising:

receiver module, the system signaling sent to the UE in cognitive radio system for receive network equipment on described frequency protection band.

34. uE as claimed in claim 33, is characterized in that, described system signaling is transmitted on one or more frequency protection bands; And the number of the frequency protection band that described system signaling takies and the frequency protection band of use are arranged by network equipment and UE, or are notified to UE by network equipment, or obtained by the mode of repeatedly attempting detecting by UE;

35. uE as claimed in claim 33, is characterized in that, described system signaling is specially: broadcast; Perhaps, system message; Perhaps, dedicated signaling;

36. uE as claimed in claim 35, it is characterized in that, the indicating mode of described available transmission band information comprises: the mode by adopting bitmap bitmap is by the corresponding frequency band of a bit of bit sequence, and mean that by the first bit value corresponding frequency band is the available transmission frequency band, mean that by the second bit value corresponding frequency band is unavailable transmission band; Perhaps, directly notify the frequency band number of available transmission frequency band, and concrete band information corresponding to described frequency band number be by network equipment and UE agreement, or by network equipment by signaling to UE;

37. uE as claimed in claim 35, it is characterized in that, the indicating mode of described control channel transmission mode information comprises: by setting up the mapping relations of binary bit sequence and control channel transmission mode, and corresponding binary bit sequence is indicated to UE by the control channel transmission mode information;

38. uE as claimed in claim 33, it is characterized in that, be mapped in described frequency protection band for the physical channel that carries described system signaling, and the coded system of described physical channel is specially: repeated encoding mode or RM coded system or along with the decay of the transition band of the frequency spectrum of authoring system signal becomes large, the coded system that the broadcast channel code check of cognitive radio system edges up;

39. uE as claimed in claim 33, is characterized in that, for the physical channel that carries described system signaling, adopts the cycle configuration mode, and the specific configuration information of cycle configuration arranged with UE by network equipment, or by network equipment by signaling to UE;

40. uE as claimed in claim 33, is characterized in that,

described receiver module; specifically for before calling time; the delivery time of the physical channel for the system signaling that carries cognitive radio system that the described calling time of distance is nearest, the system signaling that the Sampling network side apparatus sends to the UE in cognitive radio system on described frequency protection band.