CN102340817A - Multipoint collaboration method and device - Google Patents
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- CN102340817A CN102340817A CN2010102387519A CN201010238751A CN102340817A CN 102340817 A CN102340817 A CN 102340817A CN 2010102387519 A CN2010102387519 A CN 2010102387519A CN 201010238751 A CN201010238751 A CN 201010238751A CN 102340817 A CN102340817 A CN 102340817A
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Abstract
The invention discloses a multipoint collaboration method and device. The method comprises the following steps of: presetting a first threshold of a measurement information related to the wireless environment condition, or obtaining the first threshold by self learning; receiving the measurement information reported by a user terminal (UT) after measuring the wireless environment condition; comparing the measurement information with the first threshold, and selecting a spatial collaboration method according to the comparison result; and notifying the user terminal of the spatial collaboration method, wherein the user terminal uses the spatial collaboration method for communication. Through the multipoint collaboration method and device provided by the invention, the spatial collaboration method is selected according to the measurement information of UT, the adopted spatial collaboration method can be flexibly adjusted, the system resources are saved, and the system overhead is effectively reduced.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly, relate to a kind of multipoint cooperative method and device.
Background technology
In follow-on broadband wireless communication network; How to solve UT (User Terminal in minizone in the cordless communication network; User terminal) throughput and average UT throughput, the particularly throughput of cell edge UT and peak rate are key issues, are faced with formidable challenges.At present, in IEEE802.16j, IMT-Advanced, WINNER, all propose to adopt the method for CoMP (Collaborative Multiple Point, multipoint cooperative transmission/reception) to solve this problem.
The basic conception of CoMP is uniting between BS (Base Station, base station) and the single UT of a plurality of cooperations on identical Radio Resource to send and receive.It has two essential characteristics:
(1) each UT can cooperate by a plurality of BS federated service through BS on identical Radio Resource.Like this, presence of intercell interference can be alleviated, or changes into useful signal power.
(2) each BS can serve a plurality of UT on identical Radio Resource.Can improve all sector throughput like this.
But in the CoMP implementation process, in a plurality of BS of cooperation, using identical resource is a UT service, can cause resource waste.
Summary of the invention
Technical problem to be solved by this invention is the defective to prior art, proposes a kind of multipoint cooperative method and device, in order to save system resource.
In order to solve the problems of the technologies described above, the invention provides a kind of multipoint cooperative method, comprising:
Preset the first threshold of the metrical information relevant, or obtain said first threshold through self study with the wireless environment situation;
Receive the metrical information that reports after the user terminal measurement wireless environment situation;
Said metrical information and said first threshold are compared, select the spatial cooperation method according to comparing result;
Said spatial cooperation method is notified to user terminal, and said user terminal uses said spatial cooperation method to communicate.
Further, use said spatial cooperation method also to comprise after communicating at said user terminal:
Obtain when using said spatial cooperation method to communicate between the base station mutual amount of information on the handshake interface;
When determining said containing much information in second threshold value of preset amount of information; Select new spatial cooperation method; Said new spatial cooperation method is notified to user terminal; Said user terminal uses said new spatial cooperation method to communicate, and the rank of said new spatial cooperation method is less than said spatial cooperation method;
Be less than or equal to said second threshold value when determining said amount of information, said user terminal continues to use said spatial cooperation method to communicate.
Further, use said spatial cooperation method also to comprise after communicating at said user terminal:
Obtain when using said spatial cooperation method to communicate between the base station mutual amount of information on the handshake interface;
When determining said containing much information in second threshold value of preset amount of information; Select new spatial cooperation method; Said new spatial cooperation method is notified to user terminal; Said user terminal uses said new spatial cooperation method to communicate, and the rank of said new spatial cooperation method is less than said spatial cooperation method; Then, repeat to receive the metrical information that reports after the user terminal measurement wireless environment situation, repeat the contrast of metrical information and said first threshold, and handle according to comparing result;
Be less than or equal to said second threshold value when determining said amount of information, repeat to receive the metrical information that reports after the user terminal measurement wireless environment situation, repeat the contrast of metrical information and said first threshold, and handle according to comparing result.
Further, saidly select the spatial cooperation method to comprise: to select the lower spatial cooperation method of the higher spatial cooperation method of rank or rank or keep original spatial cooperation method constant according to comparing result according to comparing result.
Further, said metrical information comprises one or more of following information: the interference of the throughput of path loss, propagation conditions, user terminal, peak rate, minizone;
Said spatial cooperation method comprises: static collaboration method, semi-static collaboration method, half dynamic cooperative method or dynamic cooperative method; The rank of said static collaboration method, semi-static collaboration method, half dynamic cooperative method and dynamic cooperative method raises successively.
The invention provides a kind of multipoint cooperative device, comprising:
Module is set, is used for the first threshold of preset relevant metrical information, or obtain said first threshold through self study with the wireless environment situation;
Receiver module is used to receive the metrical information that reports after the user terminal measurement wireless environment situation;
First selects module, is used for said metrical information and said first threshold are compared, and selects the spatial cooperation method according to comparing result;
First notification module is used for said spatial cooperation method is notified to user terminal, and said user terminal uses said spatial cooperation method to communicate.
Further, said device also comprises:
First information amount acquisition module is used to obtain when using said spatial cooperation method to communicate between the base station mutual amount of information on the handshake interface;
First judge module is used for sending one first triggering signal when determining said containing much information in second threshold value of preset amount of information; Be less than or equal to said second threshold value when determining said amount of information, send one second triggering signal;
Second selects module, is used for selecting new spatial cooperation method when receiving said first triggering signal, and the rank of said new spatial cooperation method is less than said spatial cooperation method;
Second notification module is used for when receiving said first triggering signal said new spatial cooperation method being notified to user terminal, and said user terminal uses said new spatial cooperation method to communicate; Perhaps, when receiving said second triggering signal, notify said user terminal to continue to use said spatial cooperation method to communicate.
Further, said device also comprises:
The second amount of information acquisition module is used to obtain when using said spatial cooperation method to communicate between the base station mutual amount of information on the handshake interface;
Second judge module is used for sending one the 3rd triggering signal when determining said containing much information in second threshold value of preset amount of information; Be less than or equal to said second threshold value when determining said amount of information, send one the 4th triggering signal;
The 3rd selects module, is used for selecting new spatial cooperation method when receiving said the 3rd triggering signal, and the rank of said new spatial cooperation method is less than said spatial cooperation method;
The 3rd notice module is used for said new spatial cooperation method is notified to user terminal, and said user terminal uses said new spatial cooperation method to communicate, and sends one the 5th triggering signal then;
Said receiver module is further used for receiving the metrical information that reports after the user terminal measurement wireless environment situation when receiving said the 4th triggering signal or the 5th triggering signal.
Further, said first selects module, is further used for said metrical information and first threshold are compared, according to the lower spatial cooperation method of the higher spatial cooperation method of comparing result selection rank or rank or keep original spatial cooperation method constant.
Further, said metrical information comprises one or more of following information: the interference of the throughput of path loss, propagation conditions, user terminal, peak rate, minizone;
Said spatial cooperation method comprises: static collaboration method, semi-static collaboration method, half dynamic cooperative method or dynamic cooperative method; The rank of said static collaboration method, semi-static collaboration method, half dynamic cooperative method and dynamic cooperative method raises successively.
Multipoint cooperative method provided by the invention and device are selected the spatial cooperation method according to the metrical information of UT, can adjust the spatial cooperation method that is adopted flexibly, have saved system resource, have reduced overhead effectively.
Description of drawings
Fig. 1 is the schematic flow sheet of multipoint cooperative method embodiment one provided by the invention;
Fig. 2 is the schematic flow sheet of multipoint cooperative method embodiment two provided by the invention;
Fig. 3 is the structural representation of multipoint cooperative device embodiment one provided by the invention;
Fig. 4 is the structural representation of multipoint cooperative device embodiment two provided by the invention.
Embodiment
Among the present invention, BS is preset first threshold value at first, and perhaps BS obtains first threshold according to a preset value through self study; Then, BS receives UT and measures the metrical information that reports after the wireless environment situation; BS compares this metrical information and first threshold, selects the spatial cooperation method according to comparing result; BS notifies the spatial cooperation method to UT, and UT uses this spatial cooperation method and BS to communicate then.The present invention selects the spatial cooperation method according to the metrical information of UT, can adjust the spatial cooperation method that is adopted flexibly, adopts identical spatial cooperation method to compare with prior art always, has saved system resource, has reduced overhead effectively.
Below in conjunction with accompanying drawing and preferred implementation technical scheme of the present invention is elaborated.
With reference to shown in Figure 1, be multipoint cooperative method embodiment one provided by the invention, may further comprise the steps:
Step 101, BS are provided with the first threshold of the metrical information relevant with the wireless environment situation in advance;
Specifically; At first BS confirms bandwidth ability and the performance requirement of UT; Confirm to select the parameter information of spatial cooperation method institute foundation according to this; Need also promptly to confirm the information of UT measurement, the metrical information of UT comprises at least a or multiple of following information: the interference of the throughput of path loss, propagation conditions, user terminal, peak rate, minizone.Above-mentioned information has characterized the communication condition of UT.BS can be provided with the first threshold of above-mentioned information in advance, and for example: the metrical information of establishing UT is a path loss, then BS a path loss can be set concrete numerical value as first threshold, this concrete numerical value can be empirical value.
Step 102, BS receive UT and measure the metrical information that reports after the wireless environment situation;
Parameter information (is example with the path loss) that confirm to select spatial cooperation method institute foundation at BS afterwards, UT measures parameter---the path loss in the wireless environment, UT reports BS with it.
Step 103, BS compare metrical information and first threshold, select the spatial cooperation method according to comparing result;
In the present embodiment, the spatial cooperation method can comprise: static collaboration method, semi-static collaboration method, half dynamic cooperative method and dynamic cooperative method.Wherein adopt between the BS of static collaboration method and do not have mutual amount of information on the handshake interface; Semi-static collaboration method has the fixing and long information exchange cycle, is about 100ms; Half dynamic cooperative method has the fixing and short information exchange cycle, is about 10ms; The dynamic cooperative method has the shorter information exchange cycle, has only about 10us.Above-mentioned various spatial cooperation method is merely a concrete example, and the present invention is not limited only to this.
Different spatial cooperation methods is different to the occupancy of handshake interface between BS, be different to the occupation rate of resource promptly also, and different spatial cooperation methods directly influences systematic function.The dynamic cooperative method is the highest to the occupancy of handshake interface between BS, and corresponding its cost is also the highest, and systematic function is also best, and the rank of dynamic cooperative method is the highest among this paper; The rank of half dynamic cooperative method is taken second place, and the rank of semi-static collaboration method is taken second place again; Static collaboration method is minimum to the occupancy of handshake interface between BS, and corresponding its cost is also minimum, and systematic function is also the poorest, and its rank is minimum.
In this step; BS compares path loss and the first threshold that UT measures; If the path loss that UT measures, shows that the communication condition of UT this moment is relatively poor greater than first threshold, then should select the higher spatial cooperation method of rank; For example: establishing current spatial cooperation method is semi-static collaboration method, and then BS should be half dynamic cooperative method or dynamic cooperative method according to the spatial cooperation method of comparing result selection.If the path loss that UT measures is less than first threshold; The communication condition that shows UT this moment is better; Then should select the lower spatial cooperation method of rank; For example: establishing current spatial cooperation method is the dynamic cooperative method, and then BS should be half dynamic cooperative method or semi-static collaboration method or static collaboration method according to the spatial cooperation method of comparing result selection.If the path loss that UT measures equals first threshold, it is constant that then BS can select to keep original spatial cooperation method.
Metrical information with UT is that peak rate is an example again, and this moment, first threshold was the threshold value of peak rate.BS compares peak rate and the first threshold that UT measures, if the peak rate that UT measures, shows that the communication condition of UT this moment is better greater than first threshold, then should select the lower spatial cooperation method of rank; If the peak rate that UT measures, shows that the communication condition of UT this moment is relatively poor less than first threshold, then should select the higher spatial cooperation method of rank; If the peak rate that UT measures equals first threshold, it is constant that then BS can select to keep original spatial cooperation method.
Step 104, BS notify the spatial cooperation method to UT, and UT uses this spatial cooperation method to communicate.
In above-mentioned each step; BS according to the communication condition of UT (like interference of the throughput of path loss, propagation conditions, user terminal, peak rate, minizone etc.) confirm the spatial cooperation method; At communication condition preferably under the situation; Can select the lower spatial cooperation method of rank, save system resource, reduce overhead effectively.
Further, owing to adopt the higher spatial cooperation method of rank, causing cost to have significantly increases, and in order effectively to control cost, present embodiment it is also conceivable that the factor of the load condition of handshake interface between BS.Particularly, present embodiment can also comprise after step 104:
Mutual amount of information on the handshake interface between BS when step 105, BS obtain the usage space collaboration method and communicate;
Step 106, BS judge amount of information whether greater than second threshold value of preset amount of information, if, execution in step 107; Otherwise execution in step 108;
Second threshold value is according to the cost demand and predefined in the present embodiment, when also being present embodiment requirement communication between BS on the handshake interface mutual amount of information surpass this second threshold value.After the spatial cooperation method that UT uses BS to select communicated, BS can obtain between BS this moment mutual amount of information on the handshake interface, if contain much information in second threshold value execution in step 107; Otherwise execution in step 108.
Step 107, BS select new spatial cooperation method, and BS notifies new spatial cooperation method to UT, and UT uses this new spatial cooperation method to communicate, and finishes.
When containing much information in preset second threshold value, BS selects new spatial cooperation method, and the rank of this new spatial cooperation method is less than original spatial cooperation method, makes as far as possible promptly also between BS that mutual amount of information reduces on the handshake interface.
Step 108, UT continue the usage space collaboration method and communicate, and finish.
When amount of information is less than or equal to the second preset threshold value, explain that the spatial cooperation method that UT used at that time satisfies the cost demand, UT continues to use this spatial cooperation method to communicate.
Further, in the present embodiment, first threshold also can obtain through self study.Particularly, BS can be provided with a threshold value initial value in advance, and this threshold value initial value rule of thumb is worth and obtains.In practical application, if BS finds that being provided with of this threshold value initial value is unreasonable, as: the path loss that UT measures is always greater than the threshold value initial value, and BS can suitably heighten this threshold value initial value according to these actual conditions so, obtains first threshold.
Metrical information for UT comprises multiple situation, and for instance: the metrical information of establishing UT comprises path loss and peak rate, and BS is respectively path loss and peak rate is provided with first threshold so.BS compares path loss and peak rate and first threshold separately, selects the spatial cooperation method according to comparing result and preset rules.This preset rules can for: when path loss less than its corresponding first threshold, peak rate is selected the lower spatial cooperation method of rank during greater than its corresponding first threshold; Other situation are selected the higher spatial cooperation method of rank or are kept original spatial cooperation method constant.This preset rules is merely an example, and present embodiment is not limited only to this.
The multipoint cooperative method that present embodiment provides can be regularly to carry out, and particularly, system clock can be set in advance, triggers the above-mentioned multipoint cooperative method of carrying out by this system clock.
With reference to shown in Figure 2, be multipoint cooperative method embodiment two provided by the invention, the multipoint cooperative method that present embodiment provides can be an executed in real time, may further comprise the steps:
This step is specially information that need to confirm the UT measurement, and the metrical information of UT comprises at least a or multiple of following information: the interference of the throughput of path loss, propagation conditions, user terminal, peak rate, minizone.
Above-mentioned parameter information has characterized the communication condition of UT; BS can be provided with the first threshold of above-mentioned information in advance; For example: the metrical information of establishing UT is the interference of minizone, then BS interference can be set concrete numerical value as first threshold, this concrete numerical value can be empirical value.
Parameter information (interference with the minizone is an example) that confirm to select spatial cooperation method institute foundation at BS afterwards, UT measure in the wireless environment parameter---the interference of minizone, UT reports BS with it.
In the present embodiment, the spatial cooperation method can comprise: static collaboration method, semi-static collaboration method, half dynamic cooperative method and dynamic cooperative method.Wherein adopt between the BS of static collaboration method and do not have mutual amount of information on the handshake interface; Semi-static collaboration method has the fixing and long information exchange cycle, is about 100ms; Half dynamic cooperative method has the fixing and short information exchange cycle, is about 10ms; The dynamic cooperative method has the shorter information exchange cycle, has only about 10us.Above-mentioned various spatial cooperation method is merely a concrete example, and the present invention is not limited only to this.
Different spatial cooperation methods is different to the occupancy of handshake interface between BS, be different to the occupation rate of resource promptly also, and different spatial cooperation methods directly influences systematic function.The dynamic cooperative method is the highest to the occupancy of handshake interface between BS, and corresponding its cost is also the highest, and systematic function is also best, and the rank of dynamic cooperative method is the highest among this paper; The rank of half dynamic cooperative method is taken second place, and the rank of semi-static collaboration method is taken second place again; Static collaboration method is minimum to the occupancy of handshake interface between BS, and corresponding its cost is also minimum, and systematic function is also the poorest, and its rank is minimum.
In this step; BS compares the interference and the first threshold of the minizone that UT measures; If the interference of the minizone that UT measures, shows that the communication condition of UT this moment is relatively poor greater than first threshold, then should select the higher spatial cooperation method of rank; For example: establishing current spatial cooperation method is semi-static collaboration method, and then BS should be half dynamic cooperative method or dynamic cooperative method according to the spatial cooperation method of comparing result selection.If the interference of the minizone that UT measures is less than first threshold; The communication condition that shows UT this moment is better; Then should select the lower spatial cooperation method of rank; For example: establishing current spatial cooperation method is the dynamic cooperative method, and then BS should be half dynamic cooperative method or semi-static collaboration method or static collaboration method according to the spatial cooperation method of comparing result selection.If the interference of the minizone that UT measures equals first threshold, it is constant that then BS can select to keep original spatial cooperation method.
Mutual amount of information on the handshake interface between BS when step 207, BS obtain the usage space collaboration method and communicate;
Second threshold value is according to the cost demand and predefined in the present embodiment, when also being present embodiment requirement communication between BS on the handshake interface mutual amount of information surpass this second threshold value.After the spatial cooperation method that UT uses BS to select communicated, BS can obtain between BS this moment mutual amount of information on the handshake interface, if contain much information in second threshold value execution in step 209; Otherwise execution in step 204.When amount of information is less than or equal to the second preset threshold value; Explain that the spatial cooperation method that UT used at that time satisfies the cost demand; Then BS repeats to receive UT and measures the metrical information that reports after the wireless environment situation, repeats the contrast of metrical information and first threshold, handles according to comparing result; Also promptly, redirect execution in step 204 and follow-up each step.。
Step 209, BS select new spatial cooperation method, and BS notifies new spatial cooperation method to UT, and UT uses this new spatial cooperation method to communicate execution in step 204.
When containing much information in preset second threshold value, BS selects new spatial cooperation method, and the rank of this new spatial cooperation method is less than original spatial cooperation method, makes as far as possible promptly also between BS that mutual amount of information reduces on the handshake interface.After step 209, BS repeats to receive UT and measures the metrical information that reports after the wireless environment situation, repeats the contrast of metrical information and first threshold, handle according to comparing result, also promptly, redirect execution in step 204 and follow-up each step.
Further, in the present embodiment, first threshold also can obtain through self study.Particularly, BS can be provided with a threshold value initial value in advance, and this threshold value initial value rule of thumb is worth and obtains.In practical application, if BS finds that being provided with of this threshold value initial value is unreasonable, as: the path loss that UT measures is always greater than the threshold value initial value, and BS can suitably heighten this threshold value initial value according to these actual conditions so, obtains first threshold.
Metrical information for UT comprises multiple situation, and for instance: the metrical information of establishing UT comprises the interference and the peak rate of minizone, and the BS interference and the peak rate that are respectively the minizone is provided with first threshold so.BS compares the interference of minizone and peak rate and first threshold separately, selects the spatial cooperation method according to comparing result and preset rules.This preset rules can for: when the interference of minizone less than its corresponding first threshold, peak rate is selected the lower spatial cooperation method of rank during greater than its corresponding first threshold; Other situation are selected the higher spatial cooperation method of rank or are kept original spatial cooperation method constant.This preset rules is merely an example, and present embodiment is not limited only to this.
Present embodiment and embodiment one difference are; The multipoint cooperative method that present embodiment provides can be an executed in real time; Particularly; Can after step 208 or step 209 are finished, continue redirect execution in step 204, what also be that present embodiment can be real-time adjusts the spatial cooperation method according to UT real time communication condition, has more effectively saved system resource.
With reference to shown in Figure 3, be multipoint cooperative device embodiment one provided by the invention, this device comprises: module 10, receiver module 11, the first selection module 12 and first notification module 13 are set, wherein:
The first threshold that module 10 is used for preset relevant with wireless environment situation metrical information is set, or obtains first threshold through self study; Receiver module 11 is used to receive UT and measures the metrical information that reports after the wireless environment situation; First selects module 12 to be used for metrical information and first threshold are compared, and selects the spatial cooperation method according to comparing result; First notification module 13 is used for the spatial cooperation method is notified to UT, and UT uses this spatial cooperation method to communicate.
Above-mentioned metrical information comprises at least a or multiple of following information: the interference of the throughput of path loss, propagation conditions, user terminal, peak rate, minizone.
Above-mentioned spatial cooperation method can be static collaboration method, semi-static collaboration method, half dynamic cooperative method or dynamic cooperative method; The rank of static collaboration method, semi-static collaboration method, half dynamic cooperative method and dynamic cooperative method raises successively.
Further, the device that provides of present embodiment can also comprise: first information amount acquisition module 14, first judge module 15, second are selected the module 16 and second notification module 17; Wherein:
Mutual amount of information on the handshake interface between BS when first information amount acquisition module 14 is used to obtain the usage space collaboration method and communicates; First judge module 15 is used for determining second threshold value that contains much information in preset amount of information, sends one first triggering signal; Be less than or equal to second threshold value when determining amount of information, send one second triggering signal; Second selects module 16 to be used for selecting new spatial cooperation method when receiving first triggering signal, and the rank of this new spatial cooperation method is less than the spatial cooperation method; Second notification module 17 is used to receive first triggering signal, and new spatial cooperation method is notified to UT, and UT uses this new spatial cooperation method to communicate; Perhaps, when receiving second triggering signal, notice UT continues the usage space collaboration method and communicates.
First selects module 12 to be further used for metrical information and first threshold are compared, according to the lower spatial cooperation method of the higher spatial cooperation method of comparing result selection rank or rank or keep original spatial cooperation method constant.
The device that present embodiment provides can be the device of regularly carrying out.The device of regularly carrying out can be triggered by the system clock that is provided with in advance and carry out function corresponding.
With reference to shown in Figure 4, be multipoint cooperative device embodiment two provided by the invention, this device comprises: module 10, receiver module 11, the first selection module 12 and first notification module 13 are set, wherein:
The first threshold that module 10 is used for preset relevant with wireless environment situation metrical information is set, or obtains first threshold through self study; Receiver module 11 is used to receive UT and measures the metrical information that reports after the wireless environment situation; First selects module 12 to be used for metrical information and first threshold are compared, and selects the spatial cooperation method according to comparing result; First notification module 13 is used for the spatial cooperation method is notified to UT, and UT uses this spatial cooperation method to communicate.
The device that present embodiment provides can also comprise: the second amount of information acquisition module 20, second judge module the 21, the 3rd are selected module 22 and the 3rd notice module 23; Wherein:
Mutual amount of information on the handshake interface between base station when the second amount of information acquisition module 20 is used to obtain the usage space collaboration method and communicates; Second judge module 21 is used for determining second threshold value that contains much information in preset amount of information, sends one the 3rd triggering signal; Be less than or equal to second threshold value when determining amount of information, send one the 4th triggering signal; The 3rd selects module 22 to be used for selecting new spatial cooperation method when receiving said the 3rd triggering signal, and the rank of this new spatial cooperation method is less than the spatial cooperation method; The 3rd notice module 23 is used for new spatial cooperation method is notified to UT, and UT uses this new spatial cooperation method to communicate, and sends one the 5th triggering signal then; Receiver module 11 is further used for receiving the metrical information that reports after the user terminal measurement wireless environment situation when receiving the 4th triggering signal or the 5th triggering signal.
The device that present embodiment provides is the device of executed in real time, and the communication condition according to UT that can be real-time is adjusted the spatial cooperation method, has more effectively saved system resource.
In sum, multipoint cooperative method and device that present embodiment provides can be according to the load conditions of handshake interface between real time communication condition and the BS; Select the spatial cooperation method flexibly; System resource be can not only save effectively, overhead, also controllable costs reduced.And, because multipoint cooperative itself, when reducing overhead and saving cost, can also improve the performances such as throughput and peak rate of UT significantly.
At last; It should be noted that: more than what enumerate only is practical implementation example of the present invention; Certainly those skilled in the art can change and modification the present invention; If these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, all should think protection scope of the present invention.
Claims (10)
1. a multipoint cooperative method is characterized in that, comprising:
Preset the first threshold of the metrical information relevant, or obtain said first threshold through self study with the wireless environment situation;
Receive the metrical information that reports after the user terminal measurement wireless environment situation;
Said metrical information and said first threshold are compared, select the spatial cooperation method according to comparing result;
Said spatial cooperation method is notified to user terminal, and said user terminal uses said spatial cooperation method to communicate.
2. method according to claim 1 is characterized in that, uses said spatial cooperation method also to comprise after communicating at said user terminal:
Obtain when using said spatial cooperation method to communicate between the base station mutual amount of information on the handshake interface;
When determining said containing much information in second threshold value of preset amount of information; Select new spatial cooperation method; Said new spatial cooperation method is notified to user terminal; Said user terminal uses said new spatial cooperation method to communicate, and the rank of said new spatial cooperation method is less than said spatial cooperation method;
Be less than or equal to said second threshold value when determining said amount of information, said user terminal continues to use said spatial cooperation method to communicate.
3. method according to claim 1 is characterized in that, uses said spatial cooperation method also to comprise after communicating at said user terminal:
Obtain when using said spatial cooperation method to communicate between the base station mutual amount of information on the handshake interface;
When determining said containing much information in second threshold value of preset amount of information; Select new spatial cooperation method; Said new spatial cooperation method is notified to user terminal; Said user terminal uses said new spatial cooperation method to communicate, and the rank of said new spatial cooperation method is less than said spatial cooperation method; Then, repeat to receive the metrical information that reports after the user terminal measurement wireless environment situation, repeat the contrast of metrical information and said first threshold, and handle according to comparing result;
Be less than or equal to said second threshold value when determining said amount of information, repeat to receive the metrical information that reports after the user terminal measurement wireless environment situation, repeat the contrast of metrical information and said first threshold, and handle according to comparing result.
4. according to claim 1 or 2 or 3 described methods; It is characterized in that, saidly select the spatial cooperation method to comprise: select the lower spatial cooperation method of the higher spatial cooperation method of rank or rank or keep original spatial cooperation method constant according to comparing result according to comparing result.
5. according to claim 1 or 2 or 3 described methods, it is characterized in that said metrical information comprises one or more of following information: the interference of the throughput of path loss, propagation conditions, user terminal, peak rate, minizone;
Said spatial cooperation method comprises: static collaboration method, semi-static collaboration method, half dynamic cooperative method or dynamic cooperative method; The rank of said static collaboration method, semi-static collaboration method, half dynamic cooperative method and dynamic cooperative method raises successively.
6. a multipoint cooperative device is characterized in that, comprising:
Module is set, is used for the first threshold of preset relevant metrical information, or obtain said first threshold through self study with the wireless environment situation;
Receiver module is used to receive the metrical information that reports after the user terminal measurement wireless environment situation;
First selects module, is used for said metrical information and said first threshold are compared, and selects the spatial cooperation method according to comparing result;
First notification module is used for said spatial cooperation method is notified to user terminal, and said user terminal uses said spatial cooperation method to communicate.
7. device according to claim 6 is characterized in that, also comprises:
First information amount acquisition module is used to obtain when using said spatial cooperation method to communicate between the base station mutual amount of information on the handshake interface;
First judge module is used for sending one first triggering signal when determining said containing much information in second threshold value of preset amount of information; Be less than or equal to said second threshold value when determining said amount of information, send one second triggering signal;
Second selects module, is used for selecting new spatial cooperation method when receiving said first triggering signal, and the rank of said new spatial cooperation method is less than said spatial cooperation method;
Second notification module is used for when receiving said first triggering signal said new spatial cooperation method being notified to user terminal, and said user terminal uses said new spatial cooperation method to communicate; Perhaps, when receiving said second triggering signal, notify said user terminal to continue to use said spatial cooperation method to communicate.
8. device according to claim 6 is characterized in that, also comprises:
The second amount of information acquisition module is used to obtain when using said spatial cooperation method to communicate between the base station mutual amount of information on the handshake interface;
Second judge module is used for sending one the 3rd triggering signal when determining said containing much information in second threshold value of preset amount of information; Be less than or equal to said second threshold value when determining said amount of information, send one the 4th triggering signal;
The 3rd selects module, is used for selecting new spatial cooperation method when receiving said the 3rd triggering signal, and the rank of said new spatial cooperation method is less than said spatial cooperation method;
The 3rd notice module is used for said new spatial cooperation method is notified to user terminal, and said user terminal uses said new spatial cooperation method to communicate, and sends one the 5th triggering signal then;
Said receiver module is further used for receiving the metrical information that reports after the user terminal measurement wireless environment situation when receiving said the 4th triggering signal or the 5th triggering signal.
9. according to claim 6 or 7 or 8 described devices; It is characterized in that; Said first selects module; Be further used for said metrical information and first threshold are compared, select the lower spatial cooperation method of the higher spatial cooperation method of rank or rank or keep original spatial cooperation method constant according to comparing result.
10. according to claim 6 or 7 or 8 described devices, it is characterized in that said metrical information comprises one or more of following information: the interference of the throughput of path loss, propagation conditions, user terminal, peak rate, minizone;
Said spatial cooperation method comprises: static collaboration method, semi-static collaboration method, half dynamic cooperative method or dynamic cooperative method; The rank of said static collaboration method, semi-static collaboration method, half dynamic cooperative method and dynamic cooperative method raises successively.
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