CN101873624A - Method, device and equipment for managing communication channels of frequency spectrum sharing system - Google Patents

Method, device and equipment for managing communication channels of frequency spectrum sharing system Download PDF

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Publication number
CN101873624A
CN101873624A CN200910049943A CN200910049943A CN101873624A CN 101873624 A CN101873624 A CN 101873624A CN 200910049943 A CN200910049943 A CN 200910049943A CN 200910049943 A CN200910049943 A CN 200910049943A CN 101873624 A CN101873624 A CN 101873624A
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China
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channel
end user
user device
described
competition
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CN200910049943A
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Chinese (zh)
Inventor
杨峰
徐斌阳
邱吉刚
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上海贝尔股份有限公司
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Priority to CN200910049943A priority Critical patent/CN101873624A/en
Publication of CN101873624A publication Critical patent/CN101873624A/en

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Abstract

The embodiment of the invention provides a method, a device and equipment for managing communication channels of a frequency spectrum sharing system. In the slave system of the frequency spectrum sharing system, a back-up communication channel comprises complete back-up communication channels and partial back-up communication channels; if a main system is detected, the slave system inquires whether an available complete back-up communication channel exists; if the complete back-up communication channel does not exist, the slave system inquires whether the partial back-up communication channels are available; if the partial back-up communication channels are available, the slave system starts a communication channel competition program to carry out communication channel competition with a neighbor BS thereof; and if the partial back-up communication channels win in the communication channel competition, the slave system switches into the victorious communication channel and rebuilds connection. In this way, the connection-dropping rate of the slave system is lowered, and the QoS of the slave system is also improved.

Description

The method of channel management of spectra sharing system, device and equipment

Technical field

The present invention relates to the communication technology, relate in particular to method of channel management, device and the equipment of spectra sharing system.

Background technology

Authorize in the frequency spectrum spectra sharing system down, main system and from the shared a certain frequency spectrum resource of system, when main system does not take this frequency spectrum resource, can this idling-resource of opportunistic use from system.Main system has privilege to the use of frequency spectrum, can insert at any time.From system is opportunistic use frequency spectrum, when main system is used this frequency spectrum, need dodge from system.For fear of main system is produced harmful interference, must the periodic existence that detects main system from system.When detecting main system and exist, must abdicate current channel at once from system.In order to guarantee service quality (QoS) and to avoid causing transmission to be interrupted, should manage the backup channel from the BS of system because of abdicating channel from system.So-called backup channel exactly after detecting main system from system, can switch to the another one channel immediately.

In IEEE 802.22 standard criterions, wireless wide area network (WRAN) system need with TV (TV) coexistence of systems.The WRAN system is from system and need avoids main system TV system is produced harmful interference that when detecting main system, the WRAN system should abdicate channel.WRAN BS maintains a backup channel list, and the backup channel list has sent to each CPE in SCH.When WRAN need switch to another channel, the backup channel was converted to working channel immediately.In IEEE 802.22 standard criterions, defined main system detection recovery protocol (IDRP), in I DRP, the behavior of base station (BS) and end user device (CPE) has all been defined.Concrete, IEEE P802.22/ draft v1.0 wireless wide area network draft, the 22nd part: the media access control layer of cognition wireless wide area network and physical layer specification: the policy and the program (IEEE P802.22/DRAFTv1.0 Draft Standard for Wireless Regional Area Networks Part 22:Cognitive Wireless RAN Medium Access Control (MAC) and Physical Layer (PHY) specifications:Policies and procedures for operation in the TV Bands) that apply to TV band, the 231st page, Figure 101 describes the main system detection recovery protocol of end user device in detail.In specification of the present invention, quoted this figure and be denoted as Fig. 1.At this, earlier the program of CPE in IDRP simply described and will be described in detail in conjunction with terminal user's channel management process of the present invention in specific embodiment.Among Fig. 1, CPE can be summarized as in the process of IDRP: when main system is detected (step S102) in channel N, CPE will inform its serving BS broadcasts (step S104) and wait for the instruction (step S105) of BS.In case receive the spectrum management instruction (step S141) that BS sends, CPE will be according to instruction running (step S142).If CPE does not receive the instruction that BS sends, it will check its backup channel list (step S108).If the backup channel exists, CPE will switch to the backup channel and wait for the instruction (step S110) of BS.If BS is received (step S111) by the instruction that beacon sends, CPE will rebulid with BS and be connected (step S111).Yet, if the backup channel does not exist, CPE with scanning channel to find idle channel (from step S122).In this case, if idle channel can't find immediately that CPE will lose and being connected of BS.The main drawback of the IDRP that Here it is defines now.

Summary of the invention

For solving above-mentioned shortcoming of the prior art, the present invention proposes method of channel management, device and the equipment of new spectra sharing system.

According to the present invention, spectra sharing system from system, the backup channel comprises and backs up channel and part alternate channel fully.Back up channel fully and refer to both do not taken, again not by other idle channel that takies from the BS of system by main system; And the incremental backup channel be not meant taken by main system but by other channel that takies from the BS of system.When the BS of WRAN can not find that idle channel backs up channel as it, it can select the working channel of its neighbours BS as its incremental backup channel.If main system is detected, the CPE of WRAN will inquire about whether the available channel of backup is fully arranged.Do not exist if back up channel fully, whether it backs up channel with query portion available.If the incremental backup channel can be used, CPE will start the channel competition program and its neighbours BS carries out channel competition.If channel competition is won, CPE will switch to the channel of winning and rebulid with its serving BS broadcasts and be connected.Like this, CPE will improve greatly with its serving BS broadcasts and rebulid the possibility that is connected.In this manner, drop rate will reduce, and the QoS of WRAN system also will improve.

Particularly, according to an embodiment of the invention, provide a kind of method of channel management of wireless system, this method comprises:

Idle channel is detected in the base station;

If detect idle channel, with described idle channel as backing up channel fully;

If can not detect idle channel, the working channel of base station selected neighbours base station is as the incremental backup channel;

The base station will comprise that the backup channel information that backs up channel and/or incremental backup channel fully sends to end user device.

According to an optional embodiment of the present invention, preferred, the base station selected working channel of the neighbours base station of backing up channel at most fully that has is as the incremental backup channel.

According to an optional embodiment of the present invention, do not detect main system on the working channel of this neighbours base station.

According to an optional embodiment of the present invention, it is to send with the form of broadcasting that the base station sends to end user device with described backup channel information.

According to an embodiment of the invention, a kind of method of channel management of spectra sharing system is provided, described spectra sharing system comprises main system and from system, from system, comprise base station and end user device, wherein, end user device receives the backup channel information from the base station, and described backup channel comprises and backs up channel and/or incremental backup channel fully.

According to an optional embodiment of the present invention, if described end user device in the work at present Channel Detection to main system, whether the end user device inquiry has the available channel of backup fully, can use if back up channel fully, and end user device will switch to and back up channel fully; If there is not the available channel of backup fully, whether the end user device inquiry has available incremental backup channel, if the incremental backup channel can be used, end user device starts the channel competition process.

According to an optional embodiment of the present invention, if the incremental backup channel is unavailable, end user device starts channel scan procedure.

According to an optional embodiment of the present invention, described channel competition process is meant end user device to neighbours base station initiation channel competition, and proposes to occupy bidding of described incremental backup channel.

According to an optional embodiment of the present invention, described channel competition is based on the token strategy, if the token that described end user device is submitted to is higher than the token of neighbours base station, end user device will be won in the channel competition process.

According to an optional embodiment of the present invention, if end user device is won in the channel competition process, end user device will switch to described incremental backup channel.

According to an optional embodiment of the present invention, if end user device fails to win in the channel competition process, end user device will inquire about whether allow to carry out again channel competition, if allow to carry out the channel competition retry, end user device will be adjusted competitive strategy according to s own situation; If do not allow to carry out the channel competition retry, end user device will start channel scan procedure.

According to an optional embodiment of the present invention, end user device will be adjusted competitive strategy according to s own situation and be meant raising competition token.

According to an optional embodiment of the present invention, end user device will be adjusted competitive strategy according to s own situation and be meant that end user device competes other incremental backup channel.

According to an embodiment of the invention, a kind of channel management device of wireless system is provided, described device comprises:

Detecting unit, be used to detect idle channel and with described idle channel as backing up channel fully;

Selected cell is used to select the working channel of neighbours base station as the incremental backup channel;

Memory cell is used for the storage backup channel information;

Transmitting element is used for and will comprises that the backup channel information that backs up channel and/or incremental backup channel fully sends to end user device.

According to an optional embodiment of the present invention, preferred, selected cell selects to have the working channel of the neighbours base station of backing up channel at most fully as the incremental backup channel.

According to an optional embodiment of the present invention, do not detect main system on the working channel of described neighbours base station.

According to an optional embodiment of the present invention, it is to send with the form of broadcasting that described transmitting element sends to end user device with described backup channel information.

According to an embodiment of the invention, a kind of base station is provided, described base station comprises above-mentioned channel management device.

According to an embodiment of the invention, a kind of end user device is provided, described end user device is operated under the spectra sharing system, described spectra sharing system comprises main system and from system, comprise base station and end user device from system, wherein, end user device comprises:

A receiving element is used to receive the backup channel information from the base station, and described backup channel comprises and backs up channel and/or incremental backup channel fully;

A memory cell is used to store the backup channel information that receives.

According to an optional embodiment of the present invention, end user device further comprises: detecting unit is used to detect whether have main system on the work at present channel; Query unit, be used for when detecting unit in the work at present Channel Detection during to main system, whether inquiry has the available channel of backup fully; If there is not the available channel of backup fully, whether the further inquiry of query unit has available incremental backup channel; Switch unit is used for the work at present channel is switched to the backup channel; The channel competition unit is used for when query unit inquires available incremental backup channel, competition part alternate channel.

According to an optional embodiment of the present invention, end user device further comprises, the scan channel unit is used for inquiring the incremental backup channel when unavailable when query unit, carries out channel scan procedure.

According to an optional embodiment of the present invention, described channel competition process is meant end user device to neighbours base station initiation channel competition, and proposes to occupy bidding of described incremental backup channel.

According to an optional embodiment of the present invention, described channel competition is based on the token strategy, if the token that described end user device is submitted to is higher than the token of neighbours base station, end user device will be won in the channel competition process.

According to an optional embodiment of the present invention, switch unit switches to the backup channel with the work at present channel and is meant when query unit inquires and backs up channel fully and can use that the switch operating channel is to backing up channel fully; Win in the channel competition process when end user device, switch to the part alternate channel.

According to an optional embodiment of the present invention, further, if end user device fails to win in the channel competition process, query unit will inquire about whether allow to carry out again channel competition, if allow to carry out the channel competition retry, end user device will be adjusted competitive strategy according to s own situation; If do not allow to carry out the channel competition retry, end user device will start channel scan procedure.

According to an optional embodiment of the present invention, end user device will be adjusted competitive strategy according to s own situation and be meant raising competition token.

According to an optional embodiment of the present invention, end user device will be adjusted competitive strategy according to s own situation and be meant that end user device competes other incremental backup channel.The method that the application of the invention provides, device and equipment, select the working channel of neighbours base station as the part alternate channel from system, when on working channel, detecting main system and do not back up fully under the situation of channel, the be at war with working channel of neighbours base station of CPE, if competition is won, to switch to the part alternate channel be the working channel of neighbours base station and rebulid connection.Like this, CPE will improve greatly with its serving BS broadcasts and rebulid the possibility that is connected.In this manner, drop rate will reduce, and the QoS of WRAN system also will improve.

Description of drawings

By below in conjunction with the description of the drawings, and along with understanding more comprehensively to of the present invention, other purposes of the present invention and effect will become clear more and easy to understand, wherein:

Fig. 1 represents the channel management schematic flow sheet of existing spectra sharing system.

Fig. 2 represents to select schematic diagram according to the part alternate channel of an embodiment of the invention.

Fig. 3 represents the channel management schematic flow sheet according to the end user device of an embodiment of the invention.

Fig. 4 represents to adopt the structural representation block diagram of the channel management device of an embodiment of the invention.

Fig. 5 represents the structural representation block diagram according to the end user device of an embodiment of the invention.

In all above-mentioned accompanying drawings, identical label represents to have identical, similar or corresponding feature or function.

Embodiment

Specifically describe embodiments of the present invention below in conjunction with accompanying drawing.

Embodiments of the present invention realize based on spectra sharing system, are the description aspect, be example with the system of IEEE802.22 standard criterion, but the present invention is not limited thereto.It is multiple to it will be understood by those of skill in the art that spectra sharing system has, and can both be applied to the present invention.Above-mentioned setting only is an exemplary illustration.

According to the IEEE802.22 standard criterion, the WRAN system need with the TV coexistence of systems.The WRAN system is from system and need avoids main TV system is produced harmful interference.When detecting main system on the working channel of WRAN system, CPE will inform its serving BS broadcasts and wait for the instruction of BS.In case receive the spectrum management instruction that BS sends, CPE will be according to the instruction running.If CPE does not receive the instruction that BS sends, it will check its backup channel list.If the backup channel exists, CPE will switch to the backup channel and wait for the instruction of BS.If BS is received by the instruction that beacon sends, CPE will rebulid with BS and be connected.

According to the present invention, spectra sharing system from system, the backup channel comprises and backs up channel and part alternate channel fully.Back up channel fully and refer to both do not taken, again not by other idle channel that takies from the BS of system by main system; And the incremental backup channel be not meant taken by main system but by other channel that takies from the BS of system.When the BS of WRAN can not find that idle channel backs up channel as it, it can select the working channel of its neighbours BS as its incremental backup channel.When BS selected the incremental backup channel, it can select those that more neighbours that back up channel are fully arranged as far as possible.Like this, when CPE wins channel competition, its neighbours also can in time switch to the channel of backup fully of himself and not go offline.In addition, if its neighbours have the more channel of backup fully, channel competition source CPE can be with the easier channel competition that wins of token still less.

According to the present invention, need the IDRP of IEEE802.22 is redefined, i.e. behavior to IDRPBS and CPE defines again, hold at BS, it is the process that has increased BS selection part alternate channel, and at the end user device end, then need redefine the channel management process owing to having increased the channel competition process.

Specifically describe the process that BS selects the part alternate channel in conjunction with Fig. 2:

BS N0 is operated in channel CH0, and because the restriction in geographical position can't find one to back up channel fully.The neighbor node of BS N0 is N1-N6, and its working channel is represented by underscore in the drawings, and it backs up channel following closely fully.Mutual based on beacon message, BS N0 knows its neighbours' working channel fully and backs up channel fully.Beacon is meant signal identification, is used for carrying out between BS and the CPE information interaction.BS N0 finds that its neighbours BS N4 has maximum channels of backup fully.Therefore, BS N0 can select the incremental backup channel of CH4 as it.Become at CH4 before the incremental backup channel of BS N0, whether BS N0 must detect CH4 and be taken by main system in the geographical position of BS N 0.If do not find main system, CH4 will be chosen as the incremental backup channel by BS N0 so.If CH4 detects the main system signal, so BS N0 with select to have back up channel more than second fully neighbours as its potential incremental backup channel.BS N0 will carry out this process up to selecting the incremental backup channel.Based on this criterion, WRAN BS can select the incremental backup channel and minimize influence to its neighbours, improves the possibility of channel competition simultaneously.The backup channel list is with the form of broadcasting, and (SCH) sends to each CPE by the superframe control head.

In conjunction with Fig. 3, specify the course of work of the channel management of end user device.

At first, end user device receives the broadcast of BS, receives the backup channel information on SCH, and stores the backup channel information that receives; The backup channel information comprises and backs up channel information or incremental backup channel information fully.

Then, at step S301 place, system is in service.

At step S302 place, there is main system on the end user device testing channel N.

At step S303 place, end user device picks up counting.

At step S304 place, end user device attempts to inform that BS detects main system.

At step S305 place, end user device is waited for the instruction of BS.

At step S341 place, end user device receives the spectrum management instruction of BS and at step S342 place, end user device is pressed the BS instruction works.

At step S306 place, end user device is not waited until the instruction of BS in setting-up time, promptly overtime.

At step S307 place, whether the end user device inquiry supports retry to inform BS, if support retry to inform BS, then end user device returns step S303; Do not inform BS if do not support retry, then whether have and back up channel fully: back up channel fully if having in the inquiry of step S308 place end user device, then end user device enters channel switching process: at step S309 place, end user device picks up counting, at step S3110 place, the backup channel that end user device scanning is chosen to be to seek BS, and at step S311 place, end user device receives the BS beacon and rebulids with BS and is connected; And move in step S312 place system; And at step S313 place, end user device does not receive the BS beacon in setting-up time promptly overtime, and then at step S314 place, whether the end user device inquiry supports to switch retry, if support to switch retry, end user device returns step S309; If do not support to switch retry, it is execution in step S321 that end user device enters channel scan procedure.

If do not back up channel fully after the inquiry of step S308 place end user device, then at step S351 place, whether the end user device inquiry has the part alternate channel; If there is not the part alternate channel, it is execution in step S321 that end user device enters channel scan procedure; If the part alternate channel is arranged, end user device enters step S352, carries out the channel competition program.In the IEEE802.22 standard criterion, channel competition is defined: channel competition is meant that the competition source initiates channel competition to competitive target, and bidding of busy channel proposed, in channel competition, when the competition source bids above competitive target, win and obtain the right to use of channel in the competition source, otherwise, then competitive target is won, and continues to use this channel.Channel competition is normally initiated by BS, is realized alternately by beacon message (Beacon Information) by CPE.In embodiment of the present invention,,, directly initiate channel competition by beacon message by CPE so be after entering part backup channel flow process because CPE and BS are out of touch.Then end user device enters step S353, and whether inquiry wins channel, if channel competition is won, end user device enters step S311, and CPE will switch to the channel of winning and rebulid with its serving BS broadcasts and be connected.Because CPE and its serving BS broadcasts do not have working channel, CPE can propose a higher token wins channel with raising possibility.Like this, CPE will improve greatly with its serving BS broadcasts and rebulid the possibility that is connected.In this manner, drop rate will reduce, and the QoS of WRAN system also will improve.If among the step S353, end user device fails to win channel, enter step S354, whether inquiry supports the channel competition retry, if support the channel competition retry, CPE can adjust competitive strategy according to s own situation so, such as improving the competition token or competing other incremental backup channels and win the chance of channel with increase and then return step S352 execution channel competition process; If do not support the channel competition retry, then enter step S321 and carry out channel scan procedure.

Scan channel is meant the continuous scanning channel N of CPE, detects its seizure condition, if channel N is available again, reports to BS, if unavailable with regard to retry, up to overtime.The process of scan channel has a detailed description the IEEE802.22 standard criterion, at this in conjunction with the embodiment of the invention, it is quoted and is illustrated: at step S321, CPE picks up counting, and at step S322, CPE carries out scan channel, to seek BS, if find BS, execution in step S311 then, CPE receive the BS beacon and rebulid with BS and be connected; If CPE fails to find BS in setting-up time, promptly execution in step S323 is overtime, follow execution in step S324, whether the CPE inquiry detects main system on channel N, if do not detect main system on channel N, execution in step S308 then, CPE back up the channel inquiry; If on channel N, detect main system, execution in step S325 then, CPE determines still busy channel N of main system.Follow execution in step S326, whether N is available once more for CPE inquiry working channel, if unavailable, execution in step S308, CPE back up the channel inquiry; If available, execution in step S327 picks up counting, at step S328, CPE informs that BS channel N is available once more, and at step S329, CPE waits for the instruction of BS, if CPE receives the instruction of BS in setting-up time, execution in step S311, CPE receive the BS beacon and rebulid with BS and be connected; If CPE does not receive the instruction of BS in setting-up time, execution in step S330 is overtime, then execution in step S331, whether inquiry supports retry, if support retry, execution in step S327 picks up counting, if do not support retry, execution in step S308 is available again, and CPE backs up the channel inquiry.

Fig. 4 provides the structural representation block diagram according to the channel management device of an embodiment of the invention.

In the embodiments of the present invention, channel management device 400 is used for selecting the backup channel and sends the backup channel information to each CPE, comprises detecting unit 401, selected cell 402, memory cell 403 and transmitting element 404.The backup channel comprises and backs up channel and/or incremental backup channel fully.

Particularly, detecting unit 401 is configured to detect idle channel to obtain free channel information, if detect idle channel, then idle channel is stored in memory cell 403 as the backup channel.

Selected cell 402 is configured to select the part alternate channel, if detecting unit 401 fails to detect idle channel, the working channel that selected cell 402 is triggered work and selects its neighbours BS is as its incremental backup channel.The selection of part alternate channel is described in detail in conjunction with Fig. 2 in front, repeats no more here.The part alternate channel information of selecting also is stored in memory cell 403.

Memory cell 403 is used for storage and backs up channel information and/or incremental backup channel information fully.

Transmitting element 404 is configured to send the backup channel information with the form of broadcasting on SCH and sends to end user device.

According to the embodiment of the present invention, channel management device 400 can be configured in from the BS of system or in the similar network equipment.

Fig. 5 provides the structural representation block diagram according to the end user device of an embodiment of the invention.

In the embodiments of the present invention, end user device 500 is used to detect main system and recovers and being connected of BS, and comprises receiving element 501, memory cell 502, detecting unit 503, query unit 504, switch unit 505, scan channel unit 506 and channel competition unit 507.

Particularly, receiving element 501 is configured to receive the backup channel information.The backup channel information comprises and backs up channel and/or incremental backup channel fully.The backup channel information that receives is input to memory cell 502.Be without loss of generality, receiving element also is configured to receive other signals from BS, includes but not limited to control signal and data-signal.

Memory cell 502 is configured to the storage backup channel information.

Detecting unit 503 is configured to be used to detect on the work at present channel N whether have main system.

Query unit 504 is configured to memory cell 502 inquiries whether the available channel of backup is fully arranged: if there is main system to exist on the work at present channel N, whether query unit 504 will have the available channel of backup fully to memory cell 502 inquiries; Further, query unit 504 also is configured to memory cell 502 inquiries whether available incremental backup channel is arranged: if there is not the available channel of backup fully, whether query unit 504 has available incremental backup channel to memory cell 502 inquiries.

Switch unit 505 is configured to the work at present channel switched to and backs up channel fully, concrete, when query unit 504 inquires the available channel of backup fully, the channel of backup fully that switch unit 505 scanning is chosen to be seeking BS, just can be connected backing up fully to rebulid on the channel with BS in case receive beacon that BS sends.Handoff procedure has a detailed description in front, repeats no more here.

Channel competition unit 507 is configured to carry out channel competition.When query unit 504 inquires available incremental backup channel, start channel competition unit 507, initiate by CPE, to the working channel of neighbours BS competition neighbours BS.The channel competition process has a detailed description in front, repeats no more here.

Scan channel unit 506 is configured to carry out channel scan procedure, and scan channel is meant the continuous scanning channel N of CPE, detects its seizure condition, if channel N is available again, reports to BS, if unavailable with regard to retry, up to overtime.When query unit 504 fails to inquire available incremental backup channel, start scan channel unit 506, when detecting channel N, scan channel unit 506 can use, and start switch unit 505 and carry out the channel switching.In setting-up time, fail to find BS when scan channel unit 506, when promptly overtime, just start query unit 502.The process of scan channel has a detailed description in front, repeats no more here.

In the present invention, will do not taken still by main system and be defined as the part alternate channel by other channel that takies from the BS of system, and do not exist if idle channel promptly backs up channel fully, whether CPE backs up channel with query portion available.If the incremental backup channel can be used, CPE will start the channel competition program and its neighbours BS carries out channel competition.If channel competition is won, CPE will switch to the channel of winning and rebulid with its serving BS broadcasts and be connected.Like this, CPE will improve greatly with its serving BS broadcasts and rebulid the possibility that is connected.In this manner, drop rate will reduce, and the QoS of WRAN system also will improve.

The present invention can realize with hardware, software, firmware and their combination.One skilled in the art would recognize that also in can be on the signal bearing medium that uses for any suitable data treatment system set computer program and embody the present invention.The sort signal bearing medium can be transmission medium or the recordable media that is used for machine sensible information, comprises magnetizing mediums, light medium or other suitable media.The example of recordable media comprises: disk in the hard disk drive or floppy disk, the CD that is used for CD-ROM drive, tape, and thinkable other media of those skilled in the art.One skilled in the art would recognize that any communication equipment with suitable programmed device all can carry out the step as the inventive method that embodies in the program product.

Should be appreciated that from foregoing description, under the situation that does not break away from spirit of the present invention, can make amendment and change each execution mode of the present invention.Description in this specification is only used for illustrative, and should not be considered to restrictive.Scope of the present invention only is subjected to the restriction of claims.

The process of scan channel has a detailed description in front, repeats no more here.

In the present invention, Do not taken still and be defined as the part alternate channel, do not have CPE if idle channel promptly backs up channel fully by other channel that takies from the BS of system by main system Whether query portion backup channel is available.If the incremental backup channel can be used, CPE Start channel competition program and its neighbours BS and carry out channel competition.If channel competition is won, CPE and its serving BS broadcasts Switch to the channel of winning and rebulid connection.Like this, CPE Improve greatly and rebulid the possibility that is connected with its serving BS broadcasts.In this manner, drop rate Reduce, the QoS of WRAN system also Improve.

The present invention can realize with hardware, software, firmware and their combination.One skilled in the art would recognize that also can be on the signal bearing medium that uses for any suitable data treatment system If Computer program in embody the present invention.The sort signal bearing medium can be transmission medium or the recordable media that is used for machine sensible information, comprises magnetizing mediums, light medium or other suitable media.The example of recordable media comprises: disk in the hard disk drive or floppy disk, the CD that is used for CD-ROM drive, tape, and those skilled in the art Thinkable other media.One skilled in the art would recognize that and have the suitable programmed dress Any communication equipment all Can carry out step as the inventive method that embodies in the program product.

Should be appreciated that from foregoing description, under the situation that does not break away from spirit of the present invention, can make amendment and change each execution mode of the present invention.Description in this specification is only used for illustrative, and should not be considered to restrictive.Scope of the present invention only is subjected to the restriction of claims.

Claims (27)

1. the method for channel management of a wireless system comprises:
Idle channel is detected in the base station;
If detect idle channel, with described idle channel as backing up channel fully;
If can not detect idle channel, the working channel of base station selected neighbours base station is as the incremental backup channel;
The base station will comprise that the backup channel information that backs up channel and/or incremental backup channel fully sends to end user device.
2. method according to claim 1, wherein,
Preferably, the base station selected working channel of the neighbours base station of backing up channel at most fully that has is as the incremental backup channel.
3. method according to claim 2, wherein, the last working channel of described neighbours base station does not detect main system.
4. according to each described method among the claim 1-3, wherein, it is to send with the form of broadcasting that the base station sends to end user device with described backup channel information.
5. the method for channel management of a spectra sharing system, described spectra sharing system comprises main system and from system, from system, comprise base station and end user device, wherein, end user device receives the backup channel information from the base station, and described backup channel comprises and backs up channel and/or incremental backup channel fully.
6. method according to claim 5, wherein, further comprise, if described end user device in the work at present Channel Detection to main system, whether the end user device inquiry has the available channel of backup fully, can use if back up channel fully, end user device will switch to and back up channel fully; If there is not the available channel of backup fully, whether the end user device inquiry has available incremental backup channel, if the incremental backup channel can be used, end user device starts the channel competition process.
7. method according to claim 6, wherein, if the incremental backup channel is unavailable, end user device starts channel scan procedure.
8. according to claim 6 or 7 described methods, described channel competition process is meant end user device to neighbours base station initiation channel competition, and proposes to occupy bidding of described incremental backup channel.
9. method according to claim 8, wherein, described channel competition is based on the token strategy, if the token that described end user device is submitted to is higher than the token of neighbours base station, end user device will win in the channel competition process.
10. according to Claim 8 or 9 described methods, wherein, if end user device is won in the channel competition process, end user device will switch to described incremental backup channel.
11. method according to claim 10, wherein, if end user device fails to win in the channel competition process, end user device will inquire about whether allow to carry out again channel competition, if allow to carry out the channel competition retry, end user device will be adjusted competitive strategy according to s own situation; If do not allow to carry out the channel competition retry, end user device will start channel scan procedure.
12. method according to claim 11, wherein, end user device will be adjusted competitive strategy according to s own situation and be meant raising competition token.
13. method according to claim 11, wherein, end user device will be adjusted competitive strategy according to s own situation and be meant that end user device competes other incremental backup channel.
14. the channel management device of a wireless system, described device comprises:
Detecting unit, be used to detect idle channel and with described idle channel as backing up channel fully;
Selected cell is used to select the working channel of neighbours base station as the incremental backup channel;
Memory cell is used for the storage backup channel information;
Transmitting element is used for and will comprises that the backup channel information that backs up channel and/or incremental backup channel fully sends to end user device.
15. device according to claim 14, wherein,
Preferably, selected cell selects to have the working channel of the neighbours base station of backing up channel at most fully as the incremental backup channel.
16. device according to claim 15 wherein, does not detect main system on the working channel of described neighbours base station.
17. according to each described device among the claim 14-16, wherein, it is to send with the form of broadcasting that described transmitting element sends to end user device with described backup channel information.
18. a base station, described base station comprise each described channel management device among the claim 14-17.
19. an end user device, described end user device is operated under the spectra sharing system, and described spectra sharing system comprises main system and from system, comprise base station and end user device from system that wherein, end user device comprises:
A receiving element is used to receive the backup channel information from the base station, and described backup channel comprises and backs up channel and/or incremental backup channel fully;
A memory cell is used to store the backup channel information that receives.
20. end user device according to claim 19 wherein, further comprises,
Detecting unit is used to detect whether have main system on the work at present channel;
Query unit, be used for when detecting unit in the work at present Channel Detection during to main system, whether inquiry has the available channel of backup fully; If there is not the available channel of backup fully, whether the further inquiry of query unit has available incremental backup channel;
Switch unit is used for the work at present channel is switched to the backup channel;
The channel competition unit is used for when query unit inquires available incremental backup channel, competition part alternate channel.
21. end user device according to claim 20 wherein, further comprises, the scan channel unit is used for inquiring the incremental backup channel when unavailable when query unit, carries out channel scan procedure.
22. according to claim 20 or 21 described end user devices, described channel competition process is meant end user device to neighbours base station initiation channel competition, and proposes to occupy bidding of described incremental backup channel.
23. end user device according to claim 22, wherein, described channel competition is based on the token strategy, if the token that described end user device is submitted to is higher than the token of neighbours base station, end user device will win in the channel competition process.
24. according to claim 22 or 23 described end user devices, wherein, switch unit switches to the backup channel with the work at present channel and is meant when query unit inquires and backs up channel fully and can use that the switch operating channel is to backing up channel fully; Win in the channel competition process when end user device, switch to the part alternate channel.
25. end user device according to claim 24, wherein, further, if end user device fails to win in the channel competition process, query unit will inquire about whether allow to carry out again channel competition, if allow to carry out the channel competition retry, end user device will be adjusted competitive strategy according to s own situation; If do not allow to carry out the channel competition retry, end user device will start channel scan procedure.
26. end user device according to claim 25, wherein, end user device will be adjusted competitive strategy according to s own situation and be meant raising competition token.
27. end user device according to claim 25, wherein, end user device will be adjusted competitive strategy according to s own situation and be meant that end user device competes other incremental backup channel.
CN200910049943A 2009-04-24 2009-04-24 Method, device and equipment for managing communication channels of frequency spectrum sharing system CN101873624A (en)

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