CN102196452B

CN102196452B - Frequency switching method and equipment

Info

Publication number: CN102196452B
Application number: CN201010123001.7A
Authority: CN
Inventors: 黄飞; 李明齐; 陈星�
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2010-03-11
Filing date: 2010-03-11
Publication date: 2015-07-01
Anticipated expiration: 2030-03-11
Also published as: CN102196452A

Abstract

The embodiment of the invention discloses a frequency switching method which comprises the steps of sending the information of a spare idle frequency point to the terminal by a network-side equipment, and indicating the terminal to switch to the spare idle frequency point by the network-side equipment, when the network-side equipment detects that an authorized signal is included in a current working frequency point, and switching the working frequency to the spare idle frequency point. In the embodiment of the invention, when the terminal is interfered by the authorized signal, the reliability of the frequency switching is enhanced, and cost of the signal-switching is saved.

Description

A kind of frequency switching method and equipment

Technical field

The present invention relates to communication technical field, particularly relate to a kind of frequency switching method and equipment.

Background technology

The develop rapidly of wireless communication technology, makes limited frequency spectrum resource become more and more nervous.In order to effectively utilize frequency spectrum resource, propose the concept of cognitive radio (Cognitive Radio), the core concept of this cognitive radio Wireless Telecom Equipment is had find and the ability of Appropriate application frequency spectrum cavity-pocket, in the frequency range Wireless Telecom Equipment with cognitive function being operated according to the mode that certain is waited for an opportunity authorized.

Concrete, the research of current spectral cognition technology is mainly concentrated in a wireless local area network, and radio honeycomb communication system is different from general WLAN (wireless local area network) or Small access networks, radio honeycomb communication system needs to consider the switching of minizone, and between different regions the situation of even country variant internetwork roaming.

In prior art, propose a kind of method having honeycomb communication signaling to realize frequency spectrum cavity-pocket effectively to utilize based on oneself.In base station and terminal, oneself has in original signaling of cellular communication mode, increase in order to the signaling message etc. of frequency spectrum cavity-pocket configuring the frequency of cognitive communications mode, bandwidth and perceive, and base station determines cognitive communications mode (comprising the communication work parameter of frequency, bandwidth and frequency spectrum cavity-pocket information) according to sensing results, and pass through the timely notification terminal of signaling of existing honeycomb communication mode.After terminal obtains signaling information, configure the communication mode of its cognition according to the entry-into-force time.In addition, the result of mutual frequency spectrum perception between base station, and the signaling of frequency spectrum perception information by existing honeycomb communication mode is reported to base station by terminal.

In addition, also proposed a kind of method switching communication frequency between travelling carriage and base station in prior art.When travelling carriage needs to switch at cell boarder, the communication quality of the adjacent different frequent points base station of this moving table measuring, and communication quality information is fed back to base-station control apparatus, and base-station control apparatus performs the judgement of frequency error factor based on communication quality.When travelling carriage utilizes the PCR(physical channel received from base-station control apparatus to reshuffle) as triggering signal, activate different frequency function for monitoring to maintain level of quality in communications, make process proceed to different frequency monitoring mode, and switch communication frequency.

Realizing in process of the present invention, inventor finds at least there is following problem in prior art:

Realize there being honeycomb communication signaling based on oneself, in the method that frequency spectrum cavity-pocket effectively utilizes, although effectively cognitive radio technology can be adopted in radio honeycomb communication system, making full use of frequency spectrum cavity-pocket resource, and reducing the potentially conflicting to authorized user.But, the program does not consider that the working frequency points of cognitive radio cellular communications network switches concrete grammar, also do not relate to the method for carrying out frequency switching terminal cannot obtain frequency hand off signaling message in time when being subject to authorization signal interference, and the program must revise existing honeycomb communication agreement.

In the method switching communication frequency between travelling carriage and base station, the program is mainly for CDMA(Code Division Multiple Access, code division multiple access) system, prevailing scenario is the frequency error factor of terminal between alien-frequency district, and base station itself does not need to change operating frequency; When not considering cognitive radio cellular communications network frequency error factor, terminal and base station all need the situation of switch operating frequency; Do not consider terminal and base station all switch operating frequency time concrete reciprocal process; Also do not consider in cognitive radio cellular communications network, terminal may be subject to authorization signal interference correctly cannot receive the situation switching message.

Summary of the invention

The embodiment of the present invention provides a kind of frequency switching method and equipment, to realize in cognitive radio cellular communications network, and the process of base station and terminal switch operating frequency.

In order to achieve the above object, the embodiment of the present invention proposes a kind of frequency switching method, comprises the following steps:

The information of idle frequency for subsequent use is sent to terminal by network equipment, and when described network equipment detect in current working frequency have authorization signal time, described network equipment indicating terminal is switched to described idle frequency for subsequent use, and operating frequency is switched to described idle frequency for subsequent use;

Wherein, the information of idle frequency for subsequent use is sent to terminal by described network equipment, is specially: the information of described network equipment periodically to idle frequency for subsequent use described in each terminal broadcast in system broadcast message;

Described network equipment indicates described terminal switch to described idle frequency for subsequent use, comprising:

Described network equipment sends switching message by proprietary control channel respectively to each connected state terminal, wherein carries access-in resource information and configuration information of eating dishes without rice or wine;

Described network equipment, to each terminal transmitting system broadcast, wherein carries and is used to indicate the carrier frequency conversion indication information of terminal conversion work frequency to idle frequency for subsequent use.

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

Sending module, for the information of idle frequency for subsequent use is sent to terminal, and when detect in current working frequency have authorization signal time, indicating terminal is switched to described idle frequency for subsequent use;

Processing module, for being switched to described idle frequency for subsequent use by operating frequency;

Wherein, described sending module specifically for, by the information periodically to idle frequency for subsequent use described in each terminal broadcast in system broadcast message;

And send switching message by proprietary control channel respectively to each connected state terminal, wherein carry access-in resource information and configuration information of eating dishes without rice or wine; And to each terminal transmitting system broadcast, wherein carry and be used to indicate the carrier frequency conversion indication information of terminal conversion work frequency to idle frequency for subsequent use.

The embodiment of the present invention also proposed a kind of terminal, comprising:

Receiver module, for receiving the information of for subsequent use idle frequency from network equipment, and when network equipment detect in current working frequency have authorization signal time, receive the indication information that described network equipment indicating terminal is switched to described idle frequency for subsequent use;

Judge module, when having authorization signal for detecting in current working frequency when network equipment, judges whether receiver module can receive the indication information that described network equipment indicating terminal is switched to described idle frequency for subsequent use;

Processing module, for when the judged result of described judge module is for being, then according to the flow process of the message execution work frequency error factor received;

Described receiver module specifically for, receive described network equipment by the information periodically to the idle frequency described for subsequent use of each terminal broadcast in system broadcast message;

And receive the switching message that described network equipment sent respectively to each connected state terminal by proprietary control channel, wherein carry access-in resource information and configuration information of eating dishes without rice or wine;

And receive the system broadcast message that described network equipment sends to each terminal, wherein carry and be used to indicate the carrier frequency conversion indication information of terminal conversion work frequency to idle frequency for subsequent use.

Compared with prior art, the present invention at least has the following advantages:

By utilizing honeycomb communication signaling to realize base station and terminal switch operating frequency in cognitive radio cellular communications network, and keep proper communication; When terminal is when being subject to authorization signal interference, enhancing the reliability of cognitive radio cellular communications network frequency error factor, decreasing the time re-establishing communication after system frequency switches; And base station and terminal switch operating frequency simultaneously in cognitive radio cellular communications network can be realized under existing cellular communication protocol not revising; Further, under the existing cellular communication protocol of amendment, also base station and terminal switch operating frequency simultaneously in cognitive radio cellular communications network can be realized, and the reliability of cognitive radio cellular communications network frequency error factor can be improved further, reduce the time re-establishing communication after system frequency switches.

Accompanying drawing explanation

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

Fig. 1 is a kind of frequency switching method flow chart proposed in the embodiment of the present invention one;

Fig. 2 is a kind of frequency switching method flow chart proposed in the embodiment of the present invention two;

Fig. 3 is the frequency switching method flow chart being positioned at network side in the embodiment of the present invention three;

Fig. 4 is the frequency switching method flow chart being positioned at end side in the embodiment of the present invention three;

Fig. 5 is the frequency switching method flow chart being positioned at network side in the embodiment of the present invention four;

Fig. 6 is the frequency switching method flow chart being positioned at end side in the embodiment of the present invention four;

Fig. 7 is embody rule scene lower frequency changing method flow chart in the corresponding embodiment of the present invention two;

Fig. 8 is embody rule scene lower frequency changing method flow chart in the corresponding embodiment of the present invention three;

Fig. 9 is embody rule scene lower frequency changing method flow chart in the corresponding embodiment of the present invention four;

Figure 10 is a kind of network equipment structure chart proposed in the embodiment of the present invention;

Figure 11 is a kind of terminal structure figure proposed in the embodiment of the present invention;

Figure 12 is the another kind of network equipment structure chart proposed in the embodiment of the present invention;

Figure 13 is the another kind of terminal structure figure proposed in the embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is embodiment of the present invention part embodiment, instead of whole embodiments.Based on the embodiment in the embodiment of the present invention, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of embodiment of the present invention protection.

As shown in Figure 1, propose a kind of frequency switching method in the embodiment of the present invention, comprise the following steps:

Step 101, when network equipment detect in current working frequency have authorization signal time, described network equipment is used to indicate the switching message of terminal switch to idle frequency for subsequent use by proprietary control channel to terminal transmission, wherein carries the information needing for subsequent use idle frequency be switched to.

Step 102, operating frequency is switched to described idle frequency for subsequent use by described network equipment.

It should be noted that described network equipment also comprises before sending described switching message: described network equipment obtains the priority of each idle frequency for subsequent use, and selects idle frequency for subsequent use according to the priority of each idle frequency for subsequent use; The information of for subsequent use idle frequency that the information of for subsequent use idle frequency carried in described switching message goes out selected by the priority of each idle frequency for subsequent use for described network equipment; The for subsequent use idle frequency that for subsequent use idle frequency that described network equipment is switched to goes out selected by the priority of each idle frequency for subsequent use for described network equipment.

Described network equipment also comprises after sending described switching message: if described terminal receives described switching message, then perform the handoff procedure of described idle frequency for subsequent use according to described switching message; If described terminal does not receive described switching message, then after described network equipment is switched to described idle frequency for subsequent use, described terminal, after experience Radio Link Failure process, initiates the cell selection procedure having storage information.

In said process, also carry proprietary access-in resource information in described switching message and configuration information of eating dishes without rice or wine.The information of described idle frequency for subsequent use comprises carrier frequency information, the bandwidth information of frequency.

In the embodiment of the present invention, when cognitive radio cellular communication system works, the network equipment being positioned at cognitive radio cellular communication system needs to be handled as follows:

(1) need to detect in current working frequency whether have authorization signal, if detect in current working frequency have authorization signal, then in order to avoid the interference to authorization signal, network side needs to close the transmission of cognitive radio cellular communication signal on current frequency.

(2) need to detect outside current working frequency, whether have other frequency can with (namely whether have other frequency unoccupied).

Concrete, if do not detect that within a period of time certain frequency is authorized to signal and takies, then network equipment needs this frequency as idle frequency for subsequent use.Wherein, network equipment can safeguard multiple idle frequency for subsequent use, detect authorization signal according to the cycle of presetting to each idle frequency for subsequent use whether to exist, and determine the priority of each idle frequency for subsequent use (such as according to testing result, priority can sort from big to small according to the idle probability of idle frequency for subsequent use), then according to priority, all idle frequencies for subsequent use are sorted, choose for subsequent use idle frequency of priority optimum (such as, priority is the highest) as the first idle frequency for subsequent use.Certainly, in practical application, also for subsequent use idle frequency of other priority can be selected as required as the first idle frequency for subsequent use (such as, selecting for subsequent use idle frequency of priority suboptimum as the first idle frequency for subsequent use), repeat no more in the embodiment of the present invention.

Further, if authorization signal detected at the first idle frequency for subsequent use, then need further using the highest for all the other an idle frequency medium priorities for subsequent use idle frequency for subsequent use as the new first idle frequency for subsequent use.

In the embodiment of the present invention, if on current frequency, authorization signal detected and communication close signal sends time, need working frequency points to be switched on the first idle frequency for subsequent use and work on, to complete cognitive radio cellular communication system frequency switching process.

In addition, after ensureing working frequency points to be switched to the first idle frequency for subsequent use, network equipment and terminal can set up RRC(Radio Resource Control fast, radio resource control) connect, network equipment is before frequency error factor, need to preserve state information (such as, sequence of data packet number, buffer state etc.) and the contextual information of each connected state terminal.And after switching frequency, connect once complete physical layer, then the state information of the connected state terminal of being preserved by network equipment and contextual information, the RRC that namely can recover each terminal immediately connects.

Based on above-mentioned situation, provide a kind of frequency switching method in the embodiment of the present invention two, the method is applied to radio cellular communication system, and certainly, the method can also be applied in other system or network, repeats no longer in detail in the embodiment of the present invention.In the present embodiment; it is the frequency switching method based on existing signaling protocol; the equipment being positioned at network side includes but not limited to base station, RNC(Radio Network Controller; radio network controller) etc.; be described for base station in the embodiment of the present invention, in practical application, all equipment being positioned at network side is all within scope.As shown in Figure 2, the method comprises the following steps:

Step 201, if authorization signal detected on current frequency after, base station generates the proprietary switching message of each connected state terminal.Wherein, this proprietary switching message is used to indicate terminal switch to idle frequency for subsequent use, and at least carries the information needing for subsequent use idle frequency be switched to, and the information of this idle frequency for subsequent use comprises carrier frequency information, the bandwidth information of frequency.

In radio cellular communication system, base station needs to detect in current working frequency whether have authorization signal, if current frequency detects authorization signal, then needs to perform the subsequent step in the embodiment of the present invention.

Concrete, include but not limited to the carrier frequency of idle frequency for subsequent use, bandwidth information (i.e. carrier frequency, the bandwidth of the first idle frequency for subsequent use or other idle frequency for subsequent use) in above-mentioned proprietary switching message, the proprietary access-in resource information of user and the information such as configuration of eating dishes without rice or wine.Wherein, user's proprietary access-in resource information comprises the proprietary random access sequence information of each user.

By using this random access sequence information, when different terminals base station frequency switch after random access procedure in, concentrate launch a large amount of random access sequence time, the random access sequence of different user can be avoided to collide, and improve sequence correct detection probability, shorten turn-on time.

Step 202, on current frequency, base station utilizes the signaling of existing cellular communication system (such as, TD-LTE system), and proprietary control channel (such as, non-broadcast channel) sends proprietary switching message to each connected state terminal.

After proprietary switching message is sent completely, this base station needs the signal be closed on current frequency to launch, and is switched to the first idle frequency for subsequent use, continues to send signal.

Step 203, whether terminal judges can receive this proprietary switching message.If when terminal correctly can receive proprietary switching message, forward step 204 to, if when terminal correctly can not receive proprietary switching message, forward step 205 to.

Concrete, because terminal is when receiving proprietary switching message, is subject to the interference of authorization signal, may receives proprietary switching message, therefore terminal needs to adopt the processing mode in step 204 or step 205 to process.

Step 204, terminal, according to the information such as carrier frequency, bandwidth of the proprietary access-in resource in proprietary switching message, eat dishes without rice or wine configuration and idle frequency for subsequent use, performs switching flow according to existing communication protocol.

Step 205, after base station is switched to the first idle frequency for subsequent use, terminal experience Radio Link Failure process, and initiate the cell selection procedure having storage information.

Based on the situation of the embodiment of the present invention two, if when the signal strength signal intensity of the authorization signal detected on current frequency is larger, then terminal may due to be subject to authorization signal interference and cannot correctly receive base station send proprietary switching message, and in order to improve the reliability of cognitive radio cellular communication system frequency error factor, reduce handover delay, a kind of frequency switching method is provided in the embodiment of the present invention three, the method is applied to radio cellular communication system, in the present embodiment, need to revise existing signaling protocol, and the carrier frequency of the first idle frequency for subsequent use, the public informations such as bandwidth sum base station carrier change-over time need to broadcast in system broadcast message.As shown in Figure 3, the method comprises the following steps:

Step 301, the carrier frequency of base station periodic broadcast transmission first idle frequency for subsequent use in system broadcast message, bandwidth sum base station carrier change-over time etc. public information.It should be noted that the signaling consumption in order to reduce system broadcast message, the proprietary access-in resource of user can not be comprised in this system broadcast message and the information such as configuration of eating dishes without rice or wine.

Concrete, base station is when normally working, and when namely base station does not detect authorization signal on current frequency, then base station needs the public information such as carrier frequency, bandwidth sum base station carrier change-over time sending the first idle frequency for subsequent use according to the periodic broadcasting preset.

Step 302, base station judges whether authorization signal detected on current frequency, if authorization signal detected on current frequency, then base station performs step 303 and step 304; If authorization signal do not detected on current frequency, then perform step 301.

Step 303, base station sends to each connected state terminal and simplifies proprietary switching message on proprietary control channel.Wherein, the information of carrying in this simplification proprietary switching message includes but not limited to the access-in resource information that user is proprietary and configuration information of eating dishes without rice or wine.

Can find out, compared with proprietary switching message, in this simplification proprietary switching message, do not need to comprise the public informations such as the carrier frequency of first of periodic broadcast the idle frequency for subsequent use in system broadcast message when base station normally works, bandwidth sum base station carrier change-over time.

Step 304, base station sends base station carrier conversion indication information, to notify that all connected state terminal base stations need inversion frequency to all terminal broadcast in system broadcast message.Wherein, this base station carrier conversion indication information can adopt and send than the modulation coding mode of proprietary switching message more robust, thus can improve the reliability of transmission.

Further, after the proprietary switching message of simplification is sent completely or base station carrier conversion indication information is sent completely, this base station needs the signal be closed on current frequency to launch, and is switched to the first idle frequency for subsequent use, continues to send signal.

In the frequency switching method of the present embodiment, above-mentioned processing procedure is the processing procedure of base station side, and further, as shown in Figure 4, the processing procedure being positioned at end side comprises the following steps:

Step 401, terminal, when normally working, receives the system broadcast message from base station, and from system broadcast message, obtain the public information such as carrier frequency, bandwidth sum base station carrier change-over time of the first idle frequency for subsequent use.

Step 402, whether terminal judges receives simplifies proprietary switching message.If when receiving the proprietary switching message of simplification, forward step 403 to, otherwise, forward step 404 to.

Concrete, when base station detects authorization signal on current frequency, then base station can send to each connected state terminal and simplify proprietary switching message, and after all terminal broadcast base station carrier conversion indication informations, and terminal possibly correctly cannot receive the proprietary switching message of this simplification owing to being subject to authorization signal interference, even base station carrier conversion indication information.In view of the situation, in this step, this terminal needs to judge whether to receive to simplify proprietary switching message, for correctly receiving the terminal simplifying proprietary switching message, need to perform step 403, and for correctly not receiving the terminal simplifying proprietary switching message, need to perform step 404.

Step 403, terminal is according to the proprietary access-in resource simplified in proprietary switching message and configuration of eating dishes without rice or wine, and the carrier frequency of for subsequent use idle frequency obtained in system broadcast message, bandwidth sum base station carrier change-over time etc. information, perform switching flow according to existing communication agreement.

Step 404, whether terminal judges receives base station carrier conversion indication information.Wherein, terminal needs the base station frequency conversion indication information judging whether to broadcast in the correct receiving system broadcast of energy, if the base station frequency conversion indication information in the correct receiving system broadcast of terminal energy, then forward step 405 to, if and terminal can not base station frequency conversion indication information correctly in receiving system broadcast, then forward step 406 to.

Step 405, operating frequency is switched to the first idle frequency for subsequent use by terminal, carries out Cell searching, and is linked into the base station after frequency inverted.

Concrete, because terminal has obtained carrier frequency, bandwidth sum base station carrier change-over time of idle frequency for subsequent use when normal work in system broadcast message; After correctly receiving the conversion of the base station frequency in system broadcast message indication information, namely operating frequency can be switched to the first idle frequency for subsequent use.

Step 406, whether terminal judges detects link failure.If link failure do not detected, forward step 407 to, if link failure detected, forward step 408 to.

Concrete, after the signal be closed on present operating frequency when base station sends, then terminal can detect link failure on present operating frequency.Further, can be that the signal that base station is closed on present operating frequency sends owing to causing the reason of terminal links failure, also may be the deep fade region that terminal is in base station range.

Therefore, both after the switching frequency of base station, the first idle frequency for subsequent use can be switched to rapidly in order to make terminal and recover the communication with base station, do not affect again the link failure Restoration Mechanism under normal running conditions, then terminal needs to adopt this step and subsequent step to process simultaneously.

Step 407, terminal performs normal communication process.

Step 408, terminal starts timer T.Wherein, the timed length of this timer T needs to be greater than the base station carrier change-over time of broadcasting in system broadcast message base station, with ensure terminal can be switched to the first idle frequency for subsequent use carries out Cell searching time, base station sends cell synchronous signal at the first idle frequency for subsequent use.

Concrete, the concrete timed length of this timer T, can according to actual needs, theoretical value and test data adjust.

Step 409, terminal initiates the cell selection procedure having storage information.

Concrete, before timer T time-out, this terminal needs according to existing communication protocol, performs normal link failure Restoration Mechanism, such as, performs and has the community of storage information to select, the operations such as RRC connection reconstruction request.And if when RRC connection recovers again, then need to cancel timer.

Step 410, whether terminal judges timer T is overtime.If after timer T time-out, forward step 411 to, otherwise, continue to perform step 409.

Step 411, operating frequency is switched to the first idle frequency for subsequent use according to system broadcast message by terminal, carries out Cell searching, and is linked into the base station after frequency inverted.

In summary it can be seen, in the embodiment of the present invention three, base station needs when normal work add in broadcast channel and switch relevant public information, need before frequency error factor to send the proprietary switching message of simplification to each user and change indication information to all terminal broadcast base station carriers after perceiving authorization signal, therefore, need to revise existing cellular network communication agreement, such as, TD-LTE system.

Based on the situation of the embodiment of the present invention two, if when the signal strength signal intensity of the authorization signal detected on current frequency is larger, then terminal may due to be subject to authorization signal interference and cannot correctly receive base station send proprietary switching message, and in order to improve the reliability of cognitive radio cellular communication system frequency error factor, reduce handover delay, a kind of frequency switching method is provided in the embodiment of the present invention four, the method is applied to radio cellular communication system, in the present embodiment, need to revise existing signaling protocol, and the carrier frequency of the first idle frequency for subsequent use, the informational needs such as bandwidth sum base station carrier change-over time send in proprietary control channel.As shown in Figure 5, the method comprises the following steps:

Step 501, base station has judged whether that terminal is linked into cognitive radio cellular communication system, if when having terminal to be linked into cognitive radio cellular communication system, forward step 502 to, otherwise, continue to have judged whether that terminal is linked into cognitive radio cellular communication system.

Step 502, base station sends the information such as carrier frequency, bandwidth sum base station carrier change-over time of the first idle frequency for subsequent use on proprietary control channel (non-broadcast channel) to this terminal.

Concrete, base station is when normally working, namely when base station does not detect authorization signal on current frequency, if there is terminal to access cognitive radio cellular communication system, then this base station needs the information such as carrier frequency, bandwidth sum base station carrier change-over time sending the first idle frequency for subsequent use on proprietary control channel to this terminal.

Step 503, base station judges whether authorization signal detected on the first idle frequency for subsequent use, if authorization signal detected on the first idle frequency for subsequent use, forwards step 504 to, otherwise, continue to judge whether authorization signal detected on the first idle frequency for subsequent use according to the cycle of presetting.

Step 504, base station upgrades the first idle frequency for subsequent use, and on proprietary control channel, the updating message of the first idle frequency for subsequent use is sent to each connected state terminal, the content of carrying in this updating message includes but not limited to carrier frequency, the bandwidth information of the first idle frequency for subsequent use after upgrading.

Concrete, because base station carrier remains unchanged change-over time after the first idle frequency for subsequent use upgrades, namely can not need to comprise this base station carrier change-over time in this updating message.

Step 505, base station judges whether authorization signal detected on current frequency, if authorization signal detected on current frequency, then base station performs step 506; If authorization signal do not detected on current frequency, then continue to judge on current frequency, detect whether have authorization signal according to the cycle of presetting.

Step 506, base station sends to each connected state terminal and simplifies proprietary switching message on proprietary control channel.Wherein, the information of carrying in this simplification proprietary switching message includes but not limited to the access-in resource information that user is proprietary and configuration information of eating dishes without rice or wine.

Further, after the proprietary switching message of simplification is sent completely, this base station needs the signal be closed on current frequency to launch, and is switched to the first idle frequency for subsequent use, continues to send signal.

In the frequency switching method of the present embodiment, above-mentioned processing procedure is the processing procedure of base station side, and further, as shown in Figure 6, the processing procedure being positioned at end side comprises the following steps:

Step 601, when terminal is linked into cognitive radio cellular communication system, terminal receives the information such as carrier frequency, bandwidth sum base station carrier change-over time of the first idle frequency for subsequent use that base station sends on proprietary control channel.

Further, when the first idle frequency for subsequent use of base station changes, terminal receives the first idle frequency updating message for subsequent use that base station sends on proprietary control channel, thus obtains carrier frequency, the bandwidth of the first idle frequency for subsequent use after upgrading.

Step 602, whether terminal judges receives simplifies proprietary switching message.If when receiving the proprietary switching message of simplification, forward step 603 to, otherwise, forward step 604 to.

Concrete, when base station detects authorization signal on current frequency, then base station can send to each connected state terminal and simplify proprietary switching message, and terminal is owing to being subject to authorization signal interference, possibly correctly cannot receive the proprietary switching message of this simplification.If terminal can correctly receive simplify proprietary switching message, step 603, if terminal can not correctly receive simplify proprietary switching message, forward step 604 to.

Step 603, terminal is according to the proprietary access-in resource simplified in proprietary switching message and configuration of eating dishes without rice or wine, and the carrier frequency of for subsequent use idle frequency obtained in proprietary control channel during normal work, bandwidth sum base station carrier change-over time etc. information, perform switching flow according to existing communication agreement.

Step 604, whether terminal judges detects link failure.If link failure do not detected, forward step 605 to, if link failure detected, forward step 606 to.

Step 605, terminal performs normal communication process.

Step 606, terminal starts timer T.Wherein, the timed length of this timer T needs the base station carrier change-over time being greater than terminal acquisition in proprietary control channel (DCCH) when initial access, with ensure terminal can be switched to the first idle frequency for subsequent use carries out Cell searching time, base station sends cell synchronous signal at the first idle frequency for subsequent use.

Step 607, terminal initiates the cell selection procedure having storage information.

Step 608, whether terminal judges timer T is overtime.If after timer T time-out, forward step 609 to, otherwise, continue to perform step 607.

Step 609, operating frequency is switched to the first idle frequency for subsequent use by terminal, carries out Cell searching, and is linked into the base station after frequency inverted.

In summary it can be seen, in the embodiment of the present invention four, base station needs the information such as carrier frequency, bandwidth sum base station carrier change-over time sending the first idle frequency for subsequent use on proprietary control channel (non-broadcast channel) to the terminal of new connecting system when normal work, and when the first idle frequency for subsequent use changes, base station also needs the updating message sending the first idle frequency for subsequent use on proprietary control channel (non-broadcast channel) to each connected state terminal; Need before frequency error factor to simplify proprietary switching message to each terminal transmission after perceiving authorization signal.Therefore, need to revise existing cellular network communication agreement, such as, TD-LTE system.

In order to the technical scheme provided by the invention of explanation clearly, below in conjunction with concrete application scenarios, the frequency switching method that the present invention proposes is further detailed.This application scenarios is have the frequency switching method in the LTE communication net of cognitive radio Electricity Functional, and based on the processing mode in the embodiment of the present invention two, as shown in Figure 7, the method comprises the following steps:

Step 701, base station detects authorization signal on current frequency, and determining needs conversion work frequency.

Step 702, base station choose from multiple idle frequency for subsequent use there is limit priority an idle frequency for subsequent use as the first idle frequency for subsequent use, and using the first idle frequency for subsequent use as new operating frequency after base station frequency conversion.

Step 703, the PDCP(Packet data convergeprotocol of all connected state terminals is preserved in base station, group data convergence protocol), RLC(Radio Link Control, radio link control) and MAC(Media Access Control, media interviews control) state information (such as, sequence number, Buffer state etc.) and contextual information (S1 interface message etc.).

Step 704, the proprietary switching message of the MobilityControlInfo message arrangement of base station to each connected state terminal, and by this proprietary switching message encapsulation in RRCConnectionReconfiguration message, RRCConnectionReconfiguration message is sent to each connected state terminal by proprietary logic channel (such as, DCCH).Wherein, the carrier frequency of idle frequency for subsequent use, bandwidth information (i.e. carrier frequency, the bandwidth of the first idle frequency for subsequent use and other idle frequency for subsequent use) is included but not limited in proprietary switching message, the proprietary access-in resource information of user and the information such as configuration of eating dishes without rice or wine.

Step 705, base station is closed signal on the current frequency and is launched, and is transformed on the first idle frequency for subsequent use and continues to transmit.

Step 706, whether terminal judges can receive this RRCConnectionReconfiguration message.If if terminal can correctly receive RRCConnectionReconfiguration message, perform step 707, if terminal can not receive RRCConnectionReconfiguration message under authorization signal interference, perform step 708.

Step 707, terminal, according to the information such as carrier frequency, bandwidth of the proprietary access-in resource of the user in MobilityControlInfo message, configuration and idle frequency for subsequent use, performs switching according to LTE communication agreement.

Step 708, after operating frequency is transformed into the first idle frequency for subsequent use by base station, terminal can owing to cannot receive the signal of Base Transmitter on the current frequency, experience Radio Link Failure process, and initiate the cell selection procedure having storage information.

For the frequency switching method had in the LTE communication net of cognitive radio Electricity Functional, based on the processing mode in the embodiment of the present invention three, as shown in Figure 8, the method comprises the following steps:

Step 801, carrier frequency, bandwidth sum base station carrier change-over time of the first idle frequency for subsequent use are broadcasted in base station in system broadcast message.

Step 802, terminal receiving system broadcast, and the information such as carrier frequency, bandwidth sum base station carrier change-over time obtaining the first idle frequency for subsequent use.

Step 803, base station detects authorization signal, and determining needs conversion work frequency.

Step 804, state information and the contextual information of PDCP, RLC and MAC of all connected state terminals are preserved in base station.

Step 805, the MobilityControlInfo message arrangement of base station to each connected state terminal simplifies proprietary switching message, and be encapsulated in RRCConnectionReconfiguration message, then RRCConnectionReconfiguration message is sent to each connected state terminal by proprietary logic channel (DCCH); And broadcast base station carrier frequency conversion instruction in system broadcast message.Wherein, the information of carrying in this simplification proprietary switching message includes but not limited to the access-in resource information that user is proprietary and configuration information of eating dishes without rice or wine; This carrier frequency conversion instruction comprises 1bit information, and instruction base station needs inversion frequency.

Step 806, base station is closed signal on the current frequency and is launched, and is transformed on the first idle frequency for subsequent use and continues to transmit.

Step 807, whether terminal judges can receive this RRCConnectionReconfiguration message.If if terminal can correctly receive RRCConnectionReconfiguration message, perform step 808, if terminal can not receive RRCConnectionReconfiguration message under authorization signal interference, perform step 809.

Step 808, terminal is according to the proprietary access-in resource of user in MobilityControlInfo message and configuration of eating dishes without rice or wine, and obtain from system broadcast message first information such as carrier frequency, bandwidth sum base station carrier change-over time of idle frequency for subsequent use, perform switching according to LTE communication agreement.

Step 809, whether terminal judges correctly can receive the carrier frequency conversion instruction broadcasted in base station system broadcast, if the carrier frequency conversion instruction in the correct receiving system broadcast of terminal energy, forward step 810 to, if terminal can not carrier frequency conversion instruction correctly in receiving system broadcast, forward step 811 to.

Step 810, operating frequency is switched to the first idle frequency for subsequent use by terminal, carries out Cell searching, and is linked into the base station after frequency inverted.

Concrete, because terminal has obtained the information such as carrier frequency, bandwidth sum base station carrier change-over time of the first idle frequency for subsequent use when normal work in system broadcast message.After terminal correctly receives carrier frequency conversion instruction in system broadcast message, operating frequency is switched on the first idle frequency for subsequent use and carries out cell search process, be then linked into the base station after carrier frequency conversion.

Step 811, whether terminal judges detects link failure, if link failure do not detected, perform normal communication process, if link failure detected, the timed length then starting this timer of timer T(T needs to be greater than the base station carrier change-over time of broadcasting in system broadcast message base station), before timer T time-out, this terminal needs according to existing communication protocol, perform normal link failure Restoration Mechanism (such as, performing has the community of storage information to select, the operations such as RRC connection reconstruction request); When after timer T time-out, terminal preferentially carries out cell search process on the first idle frequency for subsequent use.

For the frequency switching method had in the LTE communication net of cognitive radio Electricity Functional, based on the processing mode in the embodiment of the present invention four, as shown in Figure 9, the method comprises the following steps:

Step 901, terminal sends access request to base station, requires to be linked into LTE communication system.

Step 902, base station sends the information such as carrier frequency, bandwidth sum base station carrier change-over time of the first idle frequency for subsequent use to the terminal of new access LTE system by proprietary control channel (DCCH).

Step 903, when the first idle frequency for subsequent use changes, base station sends the first idle frequency updating message for subsequent use to terminal on proprietary control channel (DCCH).The content of carrying in this updating message includes but not limited to carrier frequency, the bandwidth information of the first idle frequency for subsequent use after upgrading.

Step 904, base station detects authorization signal on current frequency, and determining needs conversion work frequency.

Step 905, state information and the contextual information of PDCP, RLC and MAC of all connected state terminals are preserved in base station.

Step 906, the MobilityControlInfo message arrangement of base station to each connected state terminal simplifies proprietary switching message, and be encapsulated in RRCConnectionReconfiguration message, then RRCConnectionReconfiguration message is sent to each connected state terminal by proprietary logic channel (DCCH).

Step 907, base station is closed signal on the current frequency and is launched, and is transformed on the first idle frequency for subsequent use and continues to transmit.

Step 908, whether terminal judges can receive this RRCConnectionReconfiguration message.If if terminal can correctly receive RRCConnectionReconfiguration message, perform step 909, if terminal can not receive RRCConnectionReconfiguration message under authorization signal interference, perform step 910.

Step 909, terminal is according to the proprietary access-in resource of user in MobilityControlInfo message and configuration of eating dishes without rice or wine, and the carrier frequency of for subsequent use idle frequency obtained in proprietary control channel (DCCH) during normal work, bandwidth sum base station carrier change-over time etc. information, perform switching according to LTE communication agreement.

Step 910, whether terminal judges detects link failure, if link failure do not detected, perform normal communication process, if link failure detected, the timed length then starting this timer of timer T(T is greater than the base station carrier change-over time of terminal acquisition in proprietary control channel (DCCH) when initial access), before timer T time-out, this terminal needs according to existing communication protocol, perform normal link failure Restoration Mechanism (such as, performing has the community of storage information to select, the operations such as RRC connection reconstruction request); When after timer T time-out, terminal preferentially carries out cell search process on the first idle frequency for subsequent use.

Wherein, can adjusting according to the actual needs of each step in each embodiment of the present invention.

Visible, the method provided in each embodiment of the application of the invention, has the following advantages: by utilizing honeycomb communication signaling to realize base station and terminal switch operating frequency simultaneously in cognitive radio cellular communications network, and keep proper communication; When terminal is when being subject to authorization signal interference, enhancing the reliability of cognitive radio cellular communications network frequency error factor, decreasing the time re-establishing communication after system frequency switches; And base station and terminal switch operating frequency simultaneously in cognitive radio cellular communications network can be realized under existing cellular communication protocol not revising; Further, under the existing cellular communication protocol of amendment, also base station and terminal switch operating frequency simultaneously in cognitive radio cellular communications network can be realized, and the reliability of cognitive radio cellular communications network frequency error factor can be improved further, reduce the time re-establishing communication after system frequency switches.

Based on same inventive concept, in the embodiment of the present invention, also proposed a kind of network equipment, as shown in Figure 10, comprising:

Sending module 10, for when detect in current working frequency have authorization signal time, to be sent to terminal by proprietary control channel and be used to indicate the switching message of terminal switch to idle frequency for subsequent use, wherein carry the information of for subsequent use idle frequency that needs are switched to; Proprietary access-in resource information is also carried and configuration information of eating dishes without rice or wine in described switching message; The information of described idle frequency for subsequent use comprises carrier frequency information, the bandwidth information of frequency.

Processing module 20, for being switched to described idle frequency for subsequent use by operating frequency.

Acquisition module 30, for obtaining the priority of each idle frequency for subsequent use, and selects idle frequency for subsequent use according to the priority of each idle frequency for subsequent use; Wherein, the information of for subsequent use idle frequency carried in the described switching message information of for subsequent use idle frequency for going out selected by the priority of each idle frequency for subsequent use; The for subsequent use idle frequency of the described for subsequent use idle frequency be switched to for going out selected by the priority of each idle frequency for subsequent use.

Based on same inventive concept, in the embodiment of the present invention, also proposed a kind of terminal, as shown in figure 11, comprising:

Receiver module 40, when having authorization signal for detecting in current working frequency when network equipment, receive described network equipment and be used to indicate the switching message of terminal switch to idle frequency for subsequent use by proprietary control channel to terminal transmission, wherein carry the information needing for subsequent use idle frequency be switched to.Proprietary access-in resource information is also carried and configuration information of eating dishes without rice or wine in described switching message; The information of described idle frequency for subsequent use comprises carrier frequency information, the bandwidth information of frequency.

Judge module 50, for judging whether described receiver module 40 receives described switching message.

Processing module 60, for the judged result when judge module 50 for receiving described switching message, then performs the handoff procedure of described idle frequency for subsequent use according to described switching message; When judged result is not for receive described switching message, then after described network equipment is switched to described idle frequency for subsequent use, after experience Radio Link Failure process, initiate the cell selection procedure having storage information.

Based on same inventive concept, in the embodiment of the present invention, also proposed a kind of network equipment, as shown in figure 12, comprising:

Sending module 70, for the information of idle frequency for subsequent use is sent to terminal, and when detect in current working frequency have authorization signal time, indicating terminal is switched to described idle frequency for subsequent use.The information of described idle frequency for subsequent use comprises carrier frequency, the bandwidth information of described idle frequency for subsequent use, and the information of network equipment carrier frequency change-over time.

Processing module 80, for being switched to described idle frequency for subsequent use by operating frequency.

Described sending module 70 specifically for, by the information of system broadcast message to idle frequency for subsequent use described in each terminal broadcast; And send switching message by proprietary control channel respectively to each terminal, wherein carry access-in resource information and configuration information of eating dishes without rice or wine; And to each terminal transmitting system broadcast, wherein carry and be used to indicate the carrier frequency conversion indication information of terminal conversion work frequency to idle frequency for subsequent use.Or,

Described sending module 70 specifically for, when terminal accesses, send the information of idle frequency for subsequent use by proprietary control channel to terminal; And be used to indicate the switching message of terminal switch to idle frequency for subsequent use by proprietary control channel to each terminal transmission, wherein carry access-in resource information and configuration information of eating dishes without rice or wine.Described sending module 70 also for, when described network equipment judges described idle frequency for subsequent use there is authorization signal, upgrade the information of idle frequency for subsequent use, and send updating message by proprietary control channel to each terminal, carry the information of for subsequent use idle frequency after renewal in described updating message.

Based on same inventive concept, in the embodiment of the present invention, also proposed a kind of terminal, as shown in figure 13, comprising:

Receiver module 91, for receiving the information of for subsequent use idle frequency from network equipment, and when network equipment detect in current working frequency have authorization signal time, receive the indication information that described network equipment indicating terminal is switched to described idle frequency for subsequent use.The information of described idle frequency for subsequent use comprises carrier frequency, the bandwidth information of described idle frequency for subsequent use, and the information of network equipment carrier frequency change-over time.

Judge module 92, when having authorization signal for detecting in current working frequency when network equipment, judges whether receiver module 91 can receive the indication information that described network equipment indicating terminal is switched to described idle frequency for subsequent use.

Processing module 93, for when the judged result of described judge module 92 is for being, then according to the flow process of the message execution work frequency error factor received.

Described receiver module 91 specifically for, receive described network equipment by the information of system broadcast message to the idle frequency described for subsequent use of each terminal broadcast, and receive the switching message that described network equipment sent respectively to each terminal by proprietary control channel, wherein carry access-in resource information and configuration information of eating dishes without rice or wine; And receive the system broadcast message that described network equipment sends to each terminal, wherein carry and be used to indicate the carrier frequency conversion indication information of terminal conversion work frequency to idle frequency for subsequent use;

Described processing module 93 also for, when receiving described switching message and carrying the broadcast of carrier frequency conversion instruction, then according to the flow process of message execution work frequency error factor received; When not receiving described switching message, but receive the system broadcast message carrying carrier frequency conversion indication information, then perform and operating frequency is switched to described idle frequency for subsequent use, carry out Cell searching, be linked into the described network equipment after frequency inverted; When not receiving described switching message and the described system broadcast message carrying carrier frequency conversion indication information, then when link failure being detected, first attempt by initiating have the cell selection procedure of storage information to access the described network equipment after frequency inverted, attempting unsuccessfully, operating frequency is switched to described idle frequency for subsequent use, and carry out Cell searching, be linked into the described network equipment after frequency inverted.

Described receiver module 91 specifically for, receive described network equipment when terminal accesses, the information of for subsequent use idle frequency sent to terminal by proprietary control channel; And receive that described network equipment sent to each terminal by proprietary control channel be used to indicate the switching message of terminal switch to idle frequency for subsequent use, wherein carry access-in resource information and configuration information of eating dishes without rice or wine;

Described processing module 93 also for, when receiving described switching message, then according to the flow process of message execution work frequency error factor received; When not receiving described switching message, then when link failure being detected, first attempt by initiating have the cell selection procedure of storage information to access the described network equipment after frequency inverted, attempting unsuccessfully, operating frequency is switched to described idle frequency for subsequent use, and carry out Cell searching, be linked into the described network equipment after frequency inverted.

Further, described processing module 93 also for, attempt the described network equipment failure after having the cell selection procedure of storage information to access frequency inverted by initiation in setting duration after, operating frequency is switched to described idle frequency for subsequent use, and carry out Cell searching, be linked into the described network equipment after frequency inverted.

Wherein, the modules of apparatus of the present invention can be integrated in one, and also can be separated deployment.Above-mentioned module can merge into a module, also can split into multiple submodule further.

Visible, the equipment provided in the application of the invention embodiment, has the following advantages: by utilizing honeycomb communication signaling to realize base station and terminal switch operating frequency simultaneously in cognitive radio cellular communications network, and keep proper communication; When terminal is when being subject to authorization signal interference, enhancing the reliability of cognitive radio cellular communications network frequency error factor, decreasing the time re-establishing communication after system frequency switches; And base station and terminal switch operating frequency simultaneously in cognitive radio cellular communications network can be realized under existing cellular communication protocol not revising; Further, under the existing cellular communication protocol of amendment, also base station and terminal switch operating frequency simultaneously in cognitive radio cellular communications network can be realized, and the reliability of cognitive radio cellular communications network frequency error factor can be improved further, reduce the time re-establishing communication after system frequency switches.

Through the above description of the embodiments, those skilled in the art can be well understood to the present invention can by hardware implementing, and the mode that also can add necessary general hardware platform by software realizes.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions and perform method described in each embodiment of the present invention in order to make a computer equipment (can be personal computer, server, or the network equipment etc.).

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 carry out being distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices being different from the present embodiment.The module of above-described embodiment can merge into a module, also can split into multiple submodule further.

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

Be only several specific embodiment of the present invention above, but 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 frequency switching method, is characterized in that, comprises the following steps:

Wherein, the information of idle frequency for subsequent use is sent to terminal by described network equipment, is specially: the public information of described network equipment periodically to idle frequency for subsequent use described in each terminal broadcast in system broadcast message;

2. the method for claim 1, is characterized in that, also comprises:

If described terminal receives described switching message and carries the broadcast of carrier frequency conversion instruction, then according to the flow process of the message execution work frequency error factor received;

If described terminal does not receive described switching message, but receive the system broadcast message carrying carrier frequency conversion indication information, then perform and operating frequency is switched to described idle frequency for subsequent use, carry out Cell searching, be linked into the described network equipment after frequency inverted;

If described terminal does not receive described switching message and the described system broadcast message carrying carrier frequency conversion indication information, then when link failure being detected, first attempt by initiating have the cell selection procedure of storage information to access the described network equipment after frequency inverted, attempting unsuccessfully, operating frequency is switched to described idle frequency for subsequent use, and carry out Cell searching, be linked into the described network equipment after frequency inverted.

3. method as claimed in claim 2, it is characterized in that, the information of idle frequency for subsequent use is sent to terminal by described network equipment, is specially: described network equipment, when terminal accesses, sends the information of idle frequency for subsequent use to terminal by proprietary control channel;

Described network equipment is used to indicate the switching message of terminal switch to idle frequency for subsequent use by proprietary control channel to each terminal transmission, wherein carries access-in resource information and configuration information of eating dishes without rice or wine.

4. method as claimed in claim 3, is characterized in that, described network equipment sends the information of described idle frequency for subsequent use, also comprises afterwards:

When described network equipment judges described idle frequency for subsequent use there is authorization signal, upgrade the information of idle frequency for subsequent use, and send updating message by proprietary control channel to each terminal, carry the information of for subsequent use idle frequency after renewal in described updating message.

5. method as claimed in claim 3, is characterized in that, also comprise:

If described terminal receives described switching message, then according to the flow process of the message execution work frequency error factor received;

If described terminal does not receive described switching message, then when link failure being detected, first attempt by initiating have the cell selection procedure of storage information to access the described network equipment after frequency inverted, attempting unsuccessfully, operating frequency is switched to described idle frequency for subsequent use, and carry out Cell searching, be linked into the described network equipment after frequency inverted.

6. the method as described in claim 2 or 5, it is characterized in that, after described terminal attempts the described network equipment failure after having the cell selection procedure of storage information to access frequency inverted by initiation in setting duration, operating frequency is switched to described idle frequency for subsequent use, and carry out Cell searching, be linked into the described network equipment after frequency inverted.

7. the method for claim 1, is characterized in that, the information of described idle frequency for subsequent use comprises carrier frequency, the bandwidth information of described idle frequency for subsequent use, and the information of network equipment carrier frequency change-over time.

8. a network equipment, is characterized in that, comprising:

Wherein, described sending module specifically for, by the public information periodically to idle frequency for subsequent use described in each terminal broadcast in system broadcast message;

9. network equipment as claimed in claim 8, is characterized in that,

Described sending module specifically for, when terminal accesses, send the information of idle frequency for subsequent use by proprietary control channel to terminal;

And be used to indicate the switching message of terminal switch to idle frequency for subsequent use by proprietary control channel to each terminal transmission, wherein carry access-in resource information and configuration information of eating dishes without rice or wine.

10. network equipment as claimed in claim 9, is characterized in that,

Described sending module also for, when described network equipment judges described idle frequency for subsequent use there is authorization signal, upgrade the information of idle frequency for subsequent use, and send updating message by proprietary control channel to each terminal, carry the information of for subsequent use idle frequency after renewal in described updating message.

11. network equipments as described in any one of claim 8-10, it is characterized in that, the information of described idle frequency for subsequent use comprises carrier frequency, the bandwidth information of described idle frequency for subsequent use, and the information of network equipment carrier frequency change-over time.

12. 1 kinds of terminals, is characterized in that, comprising:

Described receiver module specifically for, receive described network equipment by the public information periodically to the idle frequency described for subsequent use of each terminal broadcast in system broadcast message;

13. terminals as claimed in claim 12, is characterized in that,

Described processing module also for, when receiving described switching message and carrying the broadcast of carrier frequency conversion instruction, then according to the flow process of message execution work frequency error factor received;

When not receiving described switching message, but receive the system broadcast message carrying carrier frequency conversion indication information, then perform and operating frequency is switched to described idle frequency for subsequent use, carry out Cell searching, be linked into the described network equipment after frequency inverted;

When not receiving described switching message and the described system broadcast message carrying carrier frequency conversion indication information, then when link failure being detected, first attempt by initiating have the cell selection procedure of storage information to access the described network equipment after frequency inverted, attempting unsuccessfully, operating frequency is switched to described idle frequency for subsequent use, and carry out Cell searching, be linked into the described network equipment after frequency inverted.

14. terminals as claimed in claim 12, is characterized in that,

Described receiver module specifically for, receive described network equipment when terminal accesses, the information of for subsequent use idle frequency sent to terminal by proprietary control channel;

And receive that described network equipment sent to each terminal by proprietary control channel be used to indicate the switching message of terminal switch to idle frequency for subsequent use, wherein carry access-in resource information and configuration information of eating dishes without rice or wine;

Described processing module also for, when receiving described switching message, then according to the flow process of message execution work frequency error factor received;

When not receiving described switching message, then when link failure being detected, first attempt by initiating have the cell selection procedure of storage information to access the described network equipment after frequency inverted, attempting unsuccessfully, operating frequency is switched to described idle frequency for subsequent use, and carry out Cell searching, be linked into the described network equipment after frequency inverted.

15. terminals as described in claim 13 or 14, is characterized in that,

Described processing module also for, attempt the described network equipment failure after having the cell selection procedure of storage information to access frequency inverted by initiation in setting duration after, operating frequency is switched to described idle frequency for subsequent use, and carry out Cell searching, be linked into the described network equipment after frequency inverted.

16. terminals as described in any one of claim 12-14, it is characterized in that, the information of described idle frequency for subsequent use comprises carrier frequency, the bandwidth information of described idle frequency for subsequent use, and the information of network equipment carrier frequency change-over time.