CN104301900A

CN104301900A - Method for cooperation between base stations

Info

Publication number: CN104301900A
Application number: CN201410598861.4A
Authority: CN
Inventors: 曹慧; 刘重军; 秦伟; 刁穗东; 付杰尉
Original assignee: Comba Telecom Systems China Ltd
Current assignee: Comba Network Systems Co Ltd
Priority date: 2014-10-29
Filing date: 2014-10-29
Publication date: 2015-01-21
Anticipated expiration: 2034-10-29
Also published as: CN104301900B

Abstract

The invention relates to the technical field of mobile communications, in particular to a method for cooperation between base stations. The method comprises the steps that the first base station receives a first cooperation request message sent by the second base station; the first base station compares the number of users in a first cooperation user set with the number of users in a second cooperation user set; it is determined that the first base station serves as a main base station or a secondary base station of a third cooperation user set according to a comparison result, wherein the third cooperation user set is the combination of the first cooperation user set and the second cooperation user set; the first base station sends a first cooperation affirmation message to the second base station, wherein the first cooperation affirmation message is used for indicating that the first base station and the second base station build a cooperation relation for the third cooperation user set, namely, the base stations build the master-slave relation according to the user sets needing to cooperate, and therefore the base stations can dynamically form the cooperation relation sets in the mobile communication network.

Description

A kind of co-operating method between base station and base station

Technical field

The present invention relates to mobile communication technology field, particularly a kind of co-operating method between base station and base station.

Background technology

In the mobile communications network of identical networking, when two adjacent base stations distribute running time-frequency resource to respective edge customer, the situation of different edge customers being distributed to identical running time-frequency resource may be there is, cause producing serious co-channel interference between edge customer, thus the dry ratio of the letter that can reduce edge customer, and then the performance of edge customer can be worsened.At Long Term Evolution project (Long Term Evolution-Advanced, be called for short LTE-A) in, collaboration type point transmitting method is proposed, cooperation relation is set up between two base stations, edge customer is made to share identical running time-frequency resource, two base stations for collaboration user sends identical data, can reach minimizing co-channel interference on same running time-frequency resource, improve the effect of marginal user performance.

In prior art, after forming cooperation relation set between the base stations, the base station that the running time-frequency resource of responsible collaboration user is dispatched is called dominant base, the base station coordinating dominant base to complete coordinated multipoint transmission is called from base station.In actual sets network process, cooperation set can be completed by the network planning in advance and divide, and the master slave relation between pre-configured base station.But complete cooperation by the network planning in advance and gather the problem that the method divided exists adaptive ability difference, be not suitable for the identical networking environment of intensive complexity, the utilance of network to frequency spectrum resource can be reduced.

Summary of the invention

The embodiment of the present invention provides a kind of co-operating method between base station and base station, in order to realize dynamic formation cooperation relation set between base station and base station in the mobile communication network.

Co-operating method between the base station that the embodiment of the present invention provides, comprising:

First base station receives the first cooperation request message that the second base station sends, and determines the quantity of the user in the first collaboration user set under the second base station according to described first cooperation request message; Wherein, the user in described first collaboration user set is the user needing under described second base station to carry out with described first base station cooperating, and described second base station is the adjacent base station of described first base station;

The quantity of the user in the quantity of the user in described first collaboration user set and the second collaboration user set compares by described first base station; Wherein, the user in described second collaboration user set is the user needing under described first base station to carry out with described second base station cooperating;

According to comparative result, described first base station determines that described first base station is as the dominant base of described 3rd collaboration user set or from base station; Wherein, described 3rd protocols User set is the intersection of described first collaboration user set and described second collaboration user set;

Described first base station sends the first cooperation acknowledge message to described second base station, described first cooperation acknowledge message is used to indicate described first base station and sets up cooperation relation for described 3rd collaboration user set and described second base station, and described first cooperates that to carry described first base station in acknowledge message be as the described dominant base of the 3rd collaboration user set or the indication information from base station.

Preferably, unappropriated band information under described second base station is carried in described first cooperation request message;

The cooperation frequency range of described first base station and described second base station distributing for described 3rd collaboration user set is carried in described first cooperation acknowledge message.

Preferably, described first base station also comprises after receiving described first cooperation request message:

According to unappropriated band information under unappropriated band information under described first base station and described second base station, determine the first frequency range set; Wherein, the frequency range in described first frequency range set is all unappropriated frequency range under described first base station and described second base station;

Calculate ratio value, the computing formula of described ratio value is: FP=min (FP1, FP2, FP3, FP4); Wherein, FP represents described ratio value, FP1 is the ratio of total frequency range of current available cooperation frequency range and described first base station under described first base station, FP2 is the ratio of total frequency range of current available cooperation frequency range and described second base station under described second base station, FP3 is the ratio of the quantity of total user under number of users in described 3rd collaboration user set and described first base station, and FP4 is number of users in described 3rd collaboration user set and the ratio of the total quantity of user under the second base station;

According to described ratio value, from described first frequency range set, determine the cooperation frequency range that described first base station and described second base station are distributed for described 3rd collaboration user set.

Preferably, described first base station, before send described first cooperation acknowledge message to described second base station, also comprises:

Described first base station receives the first cooperation request message that multiple adjacent base station sends, and the number of users needing to carry out with each adjacent base station cooperating is determined in described first base station,

If the number of users needing the number of users carrying out cooperating with described second base station to be greater than needs and other adjacent base station under described first base station to carry out cooperating, then send described first cooperation acknowledge message to described second base station.

Preferably, if described first base station does not receive cooperation request message or the cooperation acknowledge message of the transmission of any other base station within a cooperation cycle, and under described first base station, have the user needed with the 3rd base station collaboration, described 3rd base station is the adjacent base station of described first base station, then after the next one cooperation cycle in described cooperation cycle starts, also perform following steps:

Described first base station sends the second cooperation request message to the 3rd base station; Wherein, described 3rd base station is the adjacent base station of described first base station, described 3rd base station and described second base station identical or different;

Described first base station receives the second cooperation acknowledge message that described 3rd base station sends according to described second cooperation request message, described second cooperation acknowledge message is used to indicate described 3rd base station and sets up cooperation relation for the 4th collaboration user set and described first base station, and carries described 3rd base station as the described dominant base of the 4th collaboration user set or the indication information from base station in described second cooperation acknowledge message; Wherein, the user carrying out with described first base station cooperating is needed under needing the user that carries out with described 3rd base station cooperating and described 3rd base station under described 4th collaboration user set comprises described first base station.

Preferably, unappropriated band information under described first base station is carried in described second cooperation request message;

The cooperation frequency range of described first base station and described 3rd base station distributing for described 4th collaboration user is carried in described second cooperation acknowledge message.

Preferably, described first base station, before send described second cooperation request message to described 3rd base station, also comprises:

According to the user needing under described first base station to carry out with adjacent base station cooperating, determine candidate's cooperative base station set in current cooperative cycle, candidate base station in the set of described candidate's cooperative base station is the adjacent base station of described first base station, and candidate's cooperative base station gathers one_to_one corresponding with needing the user carrying out cooperating with this candidate's cooperative base station under described first base station;

Determine the quantity of user in the user's set corresponding to each candidate's cooperative base station respectively, and according to number of users order from big to small, candidate's cooperative base station is sorted;

If described 3rd base station ranks the first, and in user's set corresponding to described 3rd base station, the quantity of user is greater than other in the set of described candidate's cooperative base station user's set corresponding to candidate's cooperative base station, then select described 3rd base station.

Preferably, if the quantity of user is all identical in the user's set corresponding to the top n candidate cooperative base station after the number of users sequence in user's set, N be greater than 1 integer, then also comprise:

Obtain the measurement report that the user in the user's set in described N number of candidate's cooperative base station corresponding to each candidate's cooperative base station reports;

According to the measurement report got, determine the RSRP total value that in described N number of candidate's cooperative base station, each candidate's cooperative base station is corresponding, a RSRP total value corresponding to candidate's cooperative base station refers to the summation of the RSRP to described first base station of all reporting of user in user's set that this candidate's cooperative base station is corresponding;

According to RSRP total value order from small to large, described N number of candidate's cooperative base station is sorted;

If described 3rd base station ranks the first, and the RSRP total value corresponding to described 3rd base station is less than the RSRP total value corresponding to other candidate's cooperative base station in the set of described candidate's cooperative base station, then select described 3rd base station.

Preferably, if all identical according to the RSRP total value before after a RSRP total value sequence corresponding to M candidate's cooperative base station, M be greater than 1 integer, then also comprise:

According to the measurement report that the user in the user's set in described M candidate's cooperative base station corresponding to each candidate's cooperative base station reports, determine the 2nd RSRP total value that in described M candidate's cooperative base station, each candidate's cooperative base station is corresponding, the 2nd RSRP total value corresponding to candidate's cooperative base station refers to the summation of the RSRP to this candidate's cooperative base station of all reporting of user in user's set that this candidate's cooperative base station is corresponding;

According to the 2nd RSRP total value order from big to small, described M candidate's cooperative base station is sorted;

If described 3rd base station ranks the first, and the 2nd RSRP total value corresponding to described 3rd base station is greater than the 2nd RSRP total value corresponding to other candidate's cooperative base station in the set of described candidate's cooperative base station, then select described 3rd base station.

Preferably, if all identical according to the 2nd RSRP total value before after the 2nd RSRP total value sequence corresponding to K candidate's cooperative base station, K be greater than 1 integer, then also comprise:

The 3rd base station is selected in a random basis from described K candidate's cooperative base station.

The base station that the invention process provides, comprising: receiver module, comparison module, determination module and sending module;

Described receiver module, for receiving the first cooperation request message that the second base station sends, determines the quantity of the user in the first collaboration user set under the second base station according to described first cooperation request message; Wherein, the user in described first collaboration user set is the user needing under described second base station to carry out with this base station cooperating, and described second base station is the adjacent base station of this base station;

Described comparison module, for comparing the quantity of the user in the quantity of the user in described first collaboration user set and the second collaboration user set; Wherein, the user in described second collaboration user set is the user needing under this base station to carry out with described second base station cooperating;

Described determination module, for determining this base station according to comparative result as the dominant base of described 3rd collaboration user set or from base station; Wherein, described 3rd protocols User set is the intersection of described first collaboration user set and described second collaboration user set;

Described sending module, for sending the first cooperation acknowledge message to described second base station, described first cooperation acknowledge message is used to indicate this base station and sets up cooperation relation for described 3rd collaboration user set and described second base station, and described first cooperates that to carry this base station in acknowledge message be as the described dominant base of the 3rd collaboration user set or the indication information from base station.

Preferably, described determination module, also for:

Described first base station is before sending described first cooperation acknowledge message to described second base station, described first base station receives the first cooperation request message that multiple adjacent base station sends, and the number of users needing to carry out with each adjacent base station cooperating is determined in described first base station,

Preferably, described sending module, also for sending the second cooperation request message to the 3rd base station; Wherein, described 3rd base station is the adjacent base station of this base station, and has under this base station and need and the user of the 3rd base station collaboration, described 3rd base station and described second base station identical or different;

Described receiver module, also for receiving the second cooperation acknowledge message that described 3rd base station sends according to described second cooperation request message, described second cooperation acknowledge message is used to indicate described 3rd base station and sets up cooperation relation for the 4th collaboration user set and this base station, and carries described 3rd base station as the described dominant base of the 4th collaboration user set or the indication information from base station in described second cooperation acknowledge message; Wherein, the user carrying out with this base station cooperating is needed under needing the user that carries out with described 3rd base station cooperating and described 3rd base station under described 4th collaboration user set comprises this base station.

Preferably, described determination module, also for:

If all identical according to the 2nd RSRP total value before after the 2nd RSRP total value sequence corresponding to K candidate's cooperative base station, K be greater than 1 integer, selection the 3rd base station from described K candidate's cooperative base station in a random basis.

Co-operating method between the base station that the embodiment of the present invention provides and base station, comprise: the first base station receives the first cooperation request message that the second base station sends, and determines the quantity of the user in the first collaboration user set under the second base station according to the first cooperation request message; The quantity of the user in the quantity of the user in the first collaboration user set and the second collaboration user set compares by the first base station; According to comparative result, first base station determines that the first base station is as the dominant base of described 3rd collaboration user set or from base station; Wherein, the 3rd protocols User set is the intersection of the first collaboration user set and the second collaboration user set; First base station sends the first cooperation acknowledge message to the second base station, first cooperation acknowledge message is used to indicate the first base station and sets up cooperation relation for described 3rd collaboration user set and the second base station, namely, be that the user carrying out as required cooperating gathers and the master slave relation of foundation between base station with base station, thus cooperation relation set can be formed dynamically between base station and base station in the mobile communication network.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly introduced, 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.

Co-operating method flow diagram between the base station that Fig. 1 provides for the embodiment of the present invention;

The method flow diagram of the base station acquisition cooperation frequency range that Fig. 2 provides for the embodiment of the present invention;

Co-operating method flow diagram between the base station that Fig. 3 provides for the embodiment of the present invention;

The method flow diagram of the selection base station transmission cooperation acknowledge message that Fig. 4 provides for the embodiment of the present invention;

The method flow diagram of the selection base station transmission cooperation acknowledge message that Fig. 5 provides for the embodiment of the present invention;

The method flow diagram of the selection base station transmission cooperation acknowledge message that Fig. 6 provides for the embodiment of the present invention;

The method flow diagram of the selection base station transmission cooperation request message that Fig. 7 provides for the embodiment of the present invention;

The method flow diagram of the selection base station transmission cooperation request message that Fig. 8 provides for the embodiment of the present invention;

The method flow diagram of the selection base station transmission cooperation request message that Fig. 9 provides for the embodiment of the present invention;

The schematic diagram of three base stations in the identical networking that Figure 10 provides for the embodiment of the present invention;

The flow chart of mutual cooperation relation is set up in three base stations in the identical networking that Figure 11 provides for the embodiment of the present invention;

The base station schematic diagram that Figure 12 provides for the embodiment of the present invention.

Embodiment

In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, and obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.

In the embodiment of the present invention, define the cooperation cycle.In each cooperation cycle, in established cooperation set, the dominant base of user's set obtains the collaboration user information from base station of this user set, and carries out scheduling of resource for collaboration user.

The value of the length in cooperation cycle, can with reference in prior art, after planning completes base station collaboration set, in certain base station collaboration set, and a time span receiving the request message that dominant base sends from base station after enabling.Allow in the embodiment of the present invention to adjust dynamically the length in cooperation cycle.

Below for the first base station, be described in the handling process of the first base station in the cooperation cycle by preferred embodiment.According to the difference of the state of the first base station, namely whether be set to user set dominant base or from base station, its handling process is also different.

Fig. 1 is method flow diagram co-operating between the base station that the embodiment of the present invention provides.

After the first base station receives the first cooperation request message of the second base station transmission, flow process as shown in Figure 1 can be performed:

S101, the first base station receive the first cooperation request message that the second base station sends, and proceed to S102.

Wherein, the second base station is the adjacent base station of the first base station; First cooperation request message can comprise the ID of the second base station, the ID carrying out the user cooperated with the first base station is needed under second base station, PCI (the Physical-layer cell identity of the second base station, physical-layer cell identifier number) information, the total number of users connected under second base station, second base station use antenna port information and the second base station under unappropriated band information.

The quantity of the user in the first collaboration user set under the second base station is determined in S102, the first base station according to the first cooperation request message, proceed to S103.

Wherein, the user in the first collaboration user set is the user needing under the second base station to carry out with the first base station cooperating.

Whether the quantity of the user that S103, the first base station judge in the first collaboration user set is greater than the quantity of the user in the second collaboration user set, if the quantity of the user in the first collaboration user set is less than the quantity of the user in the second collaboration user set, then proceed to S104; If the quantity of the user in the first collaboration user set is greater than the quantity of the user in the second collaboration user set, then proceed to S106.

Wherein, the user in described second collaboration user set is the user needing under the first base station to carry out with the second base station cooperating;

The dominant base of the first base station as the 3rd collaboration user set is determined in S104, the first base station, proceeds to S105.

Wherein, described 3rd protocols User set is the intersection of the first collaboration user set and the second collaboration user set;

S105, the first base station send the first cooperation acknowledge message to the second base station.

Wherein, the first cooperation acknowledge message is used to indicate the first base station and sets up cooperation relation for the 3rd collaboration user set and the second base station, and carries the indication information of the first base station as the dominant base of the 3rd collaboration user set in the first cooperation acknowledge message.

The first base station can be comprised in first cooperation acknowledge message and whether can carry out with the second base station the mark that cooperates for the 3rd collaboration user set, the ID carrying out the user cooperated with the second base station is needed under first base station, the ID of the first base station, the PCI information of the first base station, the cooperation band information that under the first base station, unappropriated band information and the first base station and the second base station are distributed for the 3rd collaboration user.

Wherein, the mark that cooperates can be carried out with the second base station for the 3rd collaboration user set in first base station whether, such as, when the flag bit carrying out cooperating when the first base station is set to 0, represent the first base station for the 3rd collaboration user set can with the second base station collaboration, when the flag bit carrying out cooperating when the first base station is set to 1, represent the first base station for the 3rd collaboration user set can not with the second base station collaboration.

S106, the first base station determine the first base station as the 3rd collaboration user set from base station, proceed to S107.

S107, the first base station send the first cooperation acknowledge message to the second base station.Wherein, the first cooperation acknowledge message is used to indicate the first base station and sets up cooperation relation for the 3rd collaboration user set and the second base station, and carries the indication information from base station of the first base station as the 3rd collaboration user set in the first cooperation acknowledge message.

Be that user under the first base station distributes running time-frequency resource normally to not affect the first base station, first base station can set the Maximum tolerance value of cooperation frequency range, receive the first cooperation request message of the second base station transmission in the first base station after, under can judging the first base station, whether current available cooperation frequency range exceedes the Maximum tolerance value of above-mentioned setting, Maximum tolerance value as the first base station can be set as 50%, that is, the frequency range that can be used under the first base station for user collaboration must not more than 50% of the first total frequency range in base station.If the first current available cooperation frequency range in base station does not exceed the Maximum tolerance value of setting, then need the user profile of carrying out cooperating under adding up the first base station; If the first current available cooperation frequency range in base station exceedes the Maximum tolerance value of setting, then the user in the second collaboration user set under the first base station is divided into non-cooperating user, and send cooperation request failure message to the first base station, carry the information of the non-cooperating user under the first base station in this cooperation request failure message.

Further, the first base station, after receiving the first cooperation request message, by performing the flow process shown in Fig. 2, obtains the cooperation frequency range that the first base station and the second base station are distributed for the 3rd collaboration user set, as shown in Figure 2:

S201, the first base station, according to unappropriated band information under band information unappropriated under the first base station and the second base station, are determined the first frequency range set, are proceeded to S202.

Wherein, the frequency range in described first frequency range set is all unappropriated frequency range under the first base station and the 3rd base station.

S202, the first base station are by calculating ratio value.First base station, by after calculating ratio value, proceeds to S203.

Wherein, the computing formula of aforementioned proportion value is: FP=min (FP1, FP2, FP3, FP4); Wherein, FP represents aforementioned proportion value, FP1 is the ratio of total frequency range of current available cooperation frequency range and the first base station under the first base station, FP2 is the ratio of total frequency range of current available cooperation frequency range and the second base station under the second base station, FP3 is the ratio of the quantity of total user under number of users in the 3rd collaboration user set and the first base station, and FP4 is number of users in the 3rd collaboration user set and the ratio of the total quantity of user under the second base station.And the equal non-zero of FP1, FP2, FP3 and FP4, if there is arbitrary value to be zero in FP1, FP2, FP3 and FP4, then removes it from above-mentioned formula.

The cooperation frequency range that the first base station and the second base station are distributed for the 3rd collaboration user set, according to the ratio value calculated, is determined in S203, the first base station from described first frequency range set.

Further, if the first base station does not receive cooperation request message or the cooperation acknowledge message of the transmission of any other base station within a cooperation cycle, and have under having the user or the first base station needing to carry out the user that cooperates with the 3rd base station or have under the 3rd base station being detected and need to carry out with the first base station cooperating under the first base station and need and the user of the 3rd base station collaboration, also the user needing to carry out with the first base station cooperating is had under 3rd base station, 3rd base station is the adjacent base station of described first base station, the flow process described in Fig. 3 then can be performed after the next one cooperation cycle in above-mentioned cooperation cycle starts:

S301, the first base station send the second cooperation request message to the 3rd base station, proceed to S302.

Wherein, the 3rd base station is the adjacent base station of the first base station, and the 3rd base station can be identical with the second base station, also can be different; Unappropriated band information under can carrying the first base station in second cooperation request message.

S302, the first base station receive the second cooperation acknowledge message that the 3rd base station sends according to the second cooperation request message.

Wherein, second cooperation acknowledge message is used to indicate the 3rd base station and sets up cooperation relation for the 4th collaboration user set and the first base station, and carries the 3rd base station as the dominant base of the 4th collaboration user set or the indication information from base station in the second cooperation acknowledge message; Wherein, the user carrying out with the first base station cooperating is needed under needing the user that carries out with the 3rd base station cooperating and the 3rd base station under the 4th collaboration user set comprises the first base station.

Be that user under the first base station distributes running time-frequency resource normally to not affect the first base station, first base station can set the Maximum tolerance value of cooperation frequency range, first base station to the 3rd base station send second cooperation request message before, under also can judging the first base station, whether current available cooperation frequency range exceedes the Maximum tolerance value of setting, as, the Maximum tolerance value of the first base station can be set to 50%, that is, the frequency range that can be used under the first base station for user collaboration must not more than 50% of the first total frequency range in base station.If the first current available cooperation frequency range in base station does not exceed the Maximum tolerance value of setting, then need the user profile of carrying out cooperating under adding up the first base station; If the first current available cooperation frequency range in base station exceedes the Maximum tolerance value of setting, then the user in the second collaboration user set under the first base station is divided into non-cooperating user.

Further, first base station also receives the cooperation request message that other base station sends while receiving the first cooperation request message of the second base station transmission, same running time-frequency resource will be distributed to the problem of different collaboration users in order to avoid there is the first base station, then the first base station once only sends cooperation acknowledge message to a base station, first base station how to select the second base station and sends cooperation acknowledge message to the second base station, and Fig. 4, Fig. 5 and Fig. 6 below show the flow process of selection.

First flow process is as shown in Figure 4 performed:

S401, the first base station receive the cooperation request message that multiple adjacent base station sends, and proceed to S402.

S402, the first base station, according to the user needing under the first base station to carry out with adjacent base station cooperating, are determined candidate's cooperative base station set in current cooperative cycle, are proceeded to S403.

Wherein, the candidate base station in the set of candidate's cooperative base station is the adjacent base station of the first base station, and candidate's cooperative base station gathers one_to_one corresponding with needing the user carrying out cooperating with this candidate's cooperative base station under the first base station.

S403, the first base station determine the number of users needing under namely the quantity of user in the user's set corresponding to each candidate's cooperative base station determine the first base station to carry out with each adjacent base station cooperating respectively, and according to number of users order from big to small, candidate's cooperative base station is sorted, proceed to S404.

If S404 second base station ranks the first, and in user's set corresponding to the second base station, the quantity of user is greater than other in the set of candidate's cooperative base station user's set corresponding to candidate's cooperative base station, then select described second base station.

First base station for candidate cooperate set in base station and corresponding to candidate's cooperative base station user set in number of users, can according to certain cycle carry out scanning acquisition, obtain in the data that also can be reported by A3 or the A5 periods of events in LTE system.

Such as, suppose that the first base station is base station A, the candidate of the base station A set that cooperates comprises base station B and base station C, and base station A receives the cooperation request message that base station B and base station C sends simultaneously; There is a collaboration user UE1 to need to cooperate with base station B under further hypothesis base station A, have a collaboration user UE2 to need to carry out A with base station under the B of base station and cooperate; Two collaboration user UE3 and UE4 are had to need to cooperate with base station C under the A of base station, a collaboration user UE5 is had to need to cooperate with base station A under the C of base station, if when base station A detects and needs to send cooperation acknowledge message to base station B and base station C, owing to being less than for setting up with base station C the number of users cooperated under the A of base station for setting up with base station B the number of users cooperated under the A of base station, then base station A selects to send cooperation acknowledge message to base station C.After base station A sends cooperation acknowledge message to base station C, whether current under detecting this base station also have the available cooperation resource of frequency range, if base station A also has the available cooperation resource of frequency range under this base station being detected, then base station A continues to send cooperation acknowledge message to base station B; If base station A is current under this base station being detected do not have the available cooperation resource of frequency range, then base station A is divided into non-cooperating user by under this base station for setting up with base station B the user cooperated, and to base station B send cooperation request failure message and carry in this cooperation request failure message base station A by under this base station for setting up with base station B the information that the user cooperated is divided into non-cooperating user.

Further, if the quantity of user is all identical in the user's set corresponding to the top n candidate cooperative base station after the number of users sequence in user's set, N be greater than 1 integer, then can perform flow process as shown in Figure 5:

The measurement report that user in S501, the first base station user obtained in N number of candidate's cooperative base station corresponding to each candidate's cooperative base station gather reports, proceeds to S502.

S502, the first base station are according to the measurement report got, determine a RSRP (the Reference Signal Receiving Power that in N number of candidate's cooperative base station, each candidate's cooperative base station is corresponding, Reference Signal Received Power) total value, proceed to S503.Wherein, a RSRP total value corresponding to candidate's cooperative base station refers to the summation of the RSRP to the first base station of all reporting of user in user's set that this candidate's cooperative base station is corresponding, proceeds to S503.

Sorting to N number of candidate's cooperative base station according to RSRP total value order from small to large in S503, the first base station, proceeds to S504.

If S504 second base station ranks the first, and the RSRP total value corresponding to described second base station is less than the RSRP total value corresponding to other candidate's cooperative base station in the set of candidate's cooperative base station, then select the second base station.

Such as, suppose that the first base station is base station A, the candidate of the base station A set that cooperates comprises base station B and base station C, and base station A receives the cooperation request message that base station B and base station C sends simultaneously, there is a collaboration user UE1 to need to cooperate with base station B under further hypothesis base station A, have a collaboration user UE2 to need to carry out A with base station under the B of base station and cooperate, a collaboration user UE3 is had to need to cooperate with base station C under the A of base station, a collaboration user UE4 is had to need to cooperate with base station A under the C of base station, if when base station A detects and needs to send cooperation acknowledge message to base station B and base station C, due under the A of base station for base station B set up the number of users that cooperates with under the A of base station for set up the number of users cooperated identical with base station C, the RSRP total value to base station A that then the RSRP total value to base station A that reported by UE1 of base station A and UE3 report compares, if the RSRP total value to base station A that UE1 reports is less than the RSRP total value to base station A that UE3 reports, then base station A selects to send cooperation acknowledge message to base station B.After base station A sends cooperation acknowledge message to base station B, whether current under detecting this base station also have the available cooperation resource of frequency range, if base station A also has the available cooperation resource of frequency range under this base station being detected, then base station A continues to send cooperation acknowledge message to base station C; If base station A is current under this base station being detected do not have the available cooperation resource of frequency range, then base station A is divided into non-cooperating user by under this base station for setting up with base station C the user cooperated, and to base station C send cooperation request failure message and carry in this cooperation request failure message base station A by under this base station for setting up with base station C the information that the user cooperated is divided into non-cooperating user.

Further, if all identical according to the RSRP total value before after a RSRP total value sequence corresponding to M candidate's cooperative base station, M be greater than 1 integer, then can perform flow process as shown in Figure 6, also comprise:

The measurement report that S601, the first base station report according to the user in the user's set in described M candidate's cooperative base station corresponding to each candidate's cooperative base station, determine the 2nd RSRP total value that in M candidate's cooperative base station, each candidate's cooperative base station is corresponding, proceed to S602.

Wherein, the 2nd RSRP total value that candidate's cooperative base station is corresponding refers to the summation of the RSRP to this candidate's cooperative base station of all reporting of user in user's set that this candidate's cooperative base station is corresponding;

Sorting to described M candidate's cooperative base station according to the 2nd RSRP total value order from big to small in S602, the first base station, proceeds to S603.

If S603 second base station ranks the first, and the 2nd RSRP total value corresponding to the second base station is greater than the 2nd RSRP total value corresponding to other candidate's cooperative base station in the set of described candidate's cooperative base station, then select the second base station.

Further, if all identical according to the 2nd RSRP total value before after the 2nd RSRP total value sequence corresponding to K candidate's cooperative base station, K be greater than 1 integer, then from described K candidate's cooperative base station, select the second base station in a random basis.

Such as, suppose that the first base station is base station A, the candidate of the base station A set that cooperates comprises base station B and base station C, and base station A receives the cooperation request message that base station B and base station C sends simultaneously, there is a collaboration user UE1 to need to cooperate with base station B under further hypothesis base station A, have a collaboration user UE2 to need to carry out A with base station under the B of base station and cooperate, a collaboration user UE3 is had to need to cooperate with base station C under the A of base station, a collaboration user UE4 is had to need to cooperate with base station A under the C of base station, if when base station A detects and needs to send cooperation acknowledge message to base station B and base station C, due under the A of base station for base station B set up the number of users that cooperates with under the A of base station for set up the number of users cooperated identical with base station C, and the RSRP total value to base station A reported to RSRP total value and the UE3 of base station A that UE1 reports is also identical, the RSRP total value to base station C that then the RSRP total value to base station B that reported by UE1 of base station A and UE3 report compares, if the RSRP total value to base station B that UE1 reports is less than the RSRP total value to base station C that UE3 reports, then base station A selects to send cooperation acknowledge message to base station C, if the RSRP total value to base station B that UE1 reports is identical with the RSRP total value to base station C that UE3 reports, then the selection that base station A is random sends cooperation acknowledge message to base station B or base station C.

Further, first base station is before sending the second cooperation request message to the 3rd base station, if the first base station does not receive cooperation request message or the cooperation acknowledge message of the transmission of any other base station within the current cooperative cycle, and the first base station detects that needs send cooperation request message to multiple base stations, then the first base station cooperates the cycle only to a base station collaboration request message at current cooperative, thus the first base station can be avoided to distribute to different collaboration users by same running time-frequency resource.How first base station is selected the 3rd base station and is sent cooperation request message to the 3rd base station, and Fig. 7, Fig. 8 and Fig. 9 below show the flow process of selection.

First flow process is as shown in Figure 7 performed:

S701, the first base station, according to the user needing under the first base station to carry out with adjacent base station cooperating, are determined candidate's cooperative base station set in current cooperative cycle, are proceeded to S702.

S702, the first base station determine the quantity of user in the user's set corresponding to each candidate's cooperative base station respectively, and sort to candidate's cooperative base station according to number of users order from big to small, proceed to S703.

If S703 the 3rd base station ranks the first, and in user's set corresponding to the 3rd base station, the quantity of user is greater than other in the set of candidate's cooperative base station user's set corresponding to candidate's cooperative base station, then select described 3rd base station.

Such as, suppose that the first base station is base station A, the candidate of the base station A set that cooperates comprises base station B and base station C, and base station B and base station C is the adjacent base station of base station A; There is a collaboration user UE1 to need to cooperate with base station B under further hypothesis base station A, have a collaboration user UE2 to need to carry out A with base station under the B of base station and cooperate; Two collaboration user UE3 and UE4 are had to need to cooperate with base station C under the A of base station, a collaboration user UE5 is had to need to cooperate with base station A under the C of base station, if when base station A detects and needs to send cooperation request message to base station B and base station C, owing to being less than for setting up with base station C the number of users cooperated under the A of base station for setting up with base station B the number of users cooperated under the A of base station, then base station A selects to send cooperation request message to base station B

Further, if the quantity of user is all identical in the user's set corresponding to the top n candidate cooperative base station after the number of users sequence in user's set, N be greater than 1 integer, then can perform flow process as shown in Figure 8:

The measurement report that user in S801, the first base station user obtained in N number of candidate's cooperative base station corresponding to each candidate's cooperative base station gather reports, proceeds to S802.

S802, the first base station are according to the measurement report got, determine a RSRP (the Reference Signal Receiving Power that in N number of candidate's cooperative base station, each candidate's cooperative base station is corresponding, Reference Signal Received Power) total value, proceed to S503.Wherein, a RSRP total value corresponding to candidate's cooperative base station refers to the summation of the RSRP to the first base station of all reporting of user in user's set that this candidate's cooperative base station is corresponding, proceeds to S803.

Sorting to N number of candidate's cooperative base station according to RSRP total value order from small to large in S803, the first base station, proceeds to S804.

If S804 the 3rd base station ranks the first, and the RSRP total value corresponding to described 3rd base station is less than the RSRP total value corresponding to other candidate's cooperative base station in the set of candidate's cooperative base station, then select the 3rd base station.

Such as, suppose that the first base station is base station A, the candidate of the base station A set that cooperates comprises base station B and base station C, and base station B and base station C is the adjacent base station of base station A, there is a collaboration user UE1 to need to cooperate with base station B under further hypothesis base station A, have a collaboration user UE2 to need to carry out A with base station under the B of base station and cooperate, a collaboration user UE3 is had to need to cooperate with base station C under the A of base station, a collaboration user UE4 is had to need to cooperate with base station A under the C of base station, if when base station A detects and needs to send cooperation request message to base station B and base station C, due under the A of base station for base station B set up the number of users that cooperates with under the A of base station for set up the number of users cooperated identical with base station C, the RSRP total value to base station A that then the RSRP total value to base station A that reported by UE1 of base station A and UE3 report compares, if the RSRP total value to base station A that UE1 reports is less than the RSRP total value to base station A that UE3 reports, then base station A selects to send cooperation request message to base station B.

Further, if all identical according to the RSRP total value before after a RSRP total value sequence corresponding to M candidate's cooperative base station, M be greater than 1 integer, then can perform flow process as shown in Figure 9, also comprise:

The measurement report that S901, the first base station report according to the user in the user's set in described M candidate's cooperative base station corresponding to each candidate's cooperative base station, determine the 2nd RSRP total value that in M candidate's cooperative base station, each candidate's cooperative base station is corresponding, proceed to S902.

Sorting to described M candidate's cooperative base station according to the 2nd RSRP total value order from big to small in S902, the first base station, proceeds to S903.

If S903 the 3rd base station ranks the first, and the 2nd RSRP total value corresponding to the 3rd base station is greater than the 2nd RSRP total value corresponding to other candidate's cooperative base station in the set of described candidate's cooperative base station, then select the 3rd base station.

Further, if all identical according to the 2nd RSRP total value before after the 2nd RSRP total value sequence corresponding to K candidate's cooperative base station, K be greater than 1 integer, then selection the 3rd base station from described K candidate's cooperative base station in a random basis.

Such as, suppose that the first base station is base station A, the candidate of the base station A set that cooperates comprises base station B and base station C, and base station B and base station C is the adjacent base station of base station A, there is a collaboration user UE1 to need to cooperate with base station B under further hypothesis base station A, have a collaboration user UE2 to need to carry out A with base station under the B of base station and cooperate, a collaboration user UE3 is had to need to cooperate with base station C under the A of base station, a collaboration user UE4 is had to need to cooperate with base station A under the C of base station, if when base station A detects and needs to send cooperation request message to base station B and base station C, due under the A of base station for base station B set up the number of users that cooperates with under the A of base station for set up the number of users cooperated identical with base station C, and the RSRP total value to base station A reported to RSRP total value and the UE3 of base station A that UE1 reports is also identical, the RSRP total value to base station C that then the RSRP total value to base station B that reported by UE1 of base station A and UE3 report compares, if the RSRP total value to base station B that UE1 reports is less than the RSRP total value to base station C that UE3 reports, then base station A selects to send cooperation request message to base station C, if the RSRP total value to base station B that UE1 reports is identical with the RSRP total value to base station C that UE3 reports, then the selection that base station A is random sends cooperation request message to base station B or base station C.

Further, after setting up cooperation relation between base station, base station is dispatched user, user in the set of dominant base priority scheduling collaboration user, gather from base station priority scheduling non-cooperating user, if base station is dominant base and from base station, then priority scheduling is as the collaboration user user set under dominant base, then dispatches the non-cooperating user set under dominant base." the cooperation cycle " described in above embodiment can be any one the cooperation cycle after base station is enabled.

Can carry out information interaction according to the above-mentioned cooperation cycle between base station, information interaction can comprise cooperation request message and cooperation acknowledge message, even also can comprise scheduling of resource message.

Co-operating method between the base station that above-described embodiment provides, comprising: the first base station receives the first cooperation request message that the second base station sends, and determines the quantity of the user in the first collaboration user set under the second base station according to the first cooperation request message; The quantity of the user in the quantity of the user in the first collaboration user set and the second collaboration user set compares by the first base station; According to comparative result, first base station determines that the first base station is as the dominant base of described 3rd collaboration user set or from base station; Wherein, the 3rd protocols User set is the intersection of the first collaboration user set and the second collaboration user set; First base station sends the first cooperation acknowledge message to the second base station, first cooperation acknowledge message is used to indicate the first base station and sets up cooperation relation for described 3rd collaboration user set and the second base station, namely, that the user carrying out as required cooperating gathers and the master slave relation of foundation between base station with base station, therefore, base station can be dominant base and from base station for different collaboration users simultaneously, flexibility is higher, thus can form cooperation relation set dynamically between base station and base station in the mobile communication network.

Below to be in three base stations in identical networking: base station A, base station B, base station C are specifically described embodiment above, need the user of cooperation under base station A, base station B, base station C and each base station thereof as shown in Figure 10.For describing for simplicity, being described for above-mentioned three base stations first cooperation cycle behind station of rising, as shown in figure 11, supposing that between base station, the cooperation cycle is T ₀, the time that station is played in each base station is different, is respectively T _a, T _b, T _c, supposed that station time-sequencing is T further _a< T _b< T _c, station is played by the respective time in each base station, and between above-mentioned three base stations, cooperation relation establishment step is as follows:

Step one, base station A are through T _a+ T ₀after time, arrive a cooperation cycle, and this cooperation cycle is first cooperation cycle of base station A, do not receive cooperation request message or the cooperation acknowledge message of the transmission of any other base station, and under base station A being detected, have user UE1, UE2 and UE3 of needing to carry out cooperating, wherein UE1 and UE2 needs to cooperate with base station B, UE3 needs to cooperate with base station C, the number of users being greater than needs and base station C owing to needing the number of users carrying out cooperating with base station B under now base station A and carrying out cooperating, then select to send cooperation request message to base station B.

Wherein, the identification information of UE1 and UE2 can be carried in above-mentioned cooperation request message, the ID of base station A, PCI information, the antenna port information that base station A uses, the total number of users that base station A connects, base station A can be used for the resource of frequency range cooperated, base station A is currently available for tolerance value and the unappropriated resource of frequency range of base station A of the resource of frequency range of cooperation, and now the A unappropriated resource of frequency range in base station is the whole bandwidth frequency range of base station A.

Step 2, base station B are through T _b+ T ₀after time, arrive a cooperation cycle, and this cooperation cycle is the first cooperation cycle of base station B, the cooperation solicited message that base station A sends detected, and there is user UE4 and UE5 needing to carry out cooperating under this base station being detected, wherein UE4 needs to cooperate with base station A, and UE5 needs to carry out collaboration communication with base station C, then arranging base station B is UE1, UE2 and UE4 from base station, carry out the division of frequency range, and the cooperation request message that base station B sends according to base station A sends cooperation acknowledge message to base station A, this cooperation confirmation can comprise the identification information that whether can carry out cooperating, the identification information carrying out collaboration user UE4 with base station A is needed under this base station, the id information of base station B, the PCI information of base station B, base station A and base station B is collaboration user UE1 jointly, UE2 and UE4 distribute cooperation band information.

Simultaneously, base station B sends cooperation solicited message to base station C, need under can carrying this base station in this cooperation request message to carry out with base station C to cooperate the identification information of UE5, the ID of base station B, the PCI information of base station B, the antenna port information that base station B uses, the total number of users that base station B connects and the unappropriated resource of frequency range of base station B.

Step 3, base station A arrange the dominant base that base station A is UE1, UE2 and UE4 after receiving the cooperation acknowledge message of base station B transmission.

Step 4, base station C are through T _c+ T ₀after time, arrive a cooperation cycle, and this cooperation cycle is first cooperation cycle of base station C, the cooperation solicited message that base station B sends detected, and do not have under this base station being detected to need to carry out the user that cooperates, then arrange base station C be UE5 from base station, and send cooperation acknowledge message.This cooperation acknowledge message can comprise the cooperation band information distributed for UE5 of identification information that base station C can carry out cooperating, the id information of base station C, the PCI information of base station C, base station B and base station C.

Step 5, base station B arrange the dominant base that base station B is UE5 after receiving the cooperation acknowledge message of base station C transmission.

Step 6, base station A is through T ₀when again arriving a cooperation cycle, and this cooperation cycle is second cooperation cycle of base station A, the user UE3 needing to carry out cooperating is had under base station A being detected, and UE3 needs to cooperate with base station C, and the frequency range for cooperating under the A of base station does not exceed the Maximum tolerance value of setting, the Maximum tolerance value of base station A can be 30%, then send cooperation solicited message to base station C.

Step 5, base station C is through T ₀when again arriving a cooperation cycle, the cooperation solicited message that base station A sends detected, and there is the UE needing to carry out cooperating under this base station not detected, then arrange base station C be UE3 from base station, carry out the division of frequency range, and the cooperation request message that base station C sends according to base station A sends cooperation acknowledge message to base station A, this cooperation confirmation comprises the identification information whether base station C can carry out cooperating, and the id information of base station C, the PCI information of base station C, base station A and base station C are cooperation band information that collaboration user UE3 distributes jointly.

Through above step, 3 base stations: establish co-operating relation for UE1, UE2 and UE4 between base station A and base station B; Establish co-operating relation for UE3 between base station A and base station C, between base station B and base station C, establish co-operating relation for UE5.

Based on identical technical conceive, the embodiment of the present invention also provides a kind of base station, and the particular content of this base station can be implemented with reference to said method, is not repeating at this.The base station that the embodiment of the present invention provides as shown in figure 12,

As shown in the figure, the base station that the embodiment of the present invention provides, comprising: receiver module 121, comparison module 122, determination module 123 and sending module 124;

Receiver module 121, for receiving the first cooperation request message that the second base station sends, determines the quantity of the user in the first collaboration user set under the second base station according to described first cooperation request message; Wherein, the user in described first collaboration user set is the user needing under described second base station to carry out with this base station cooperating, and described second base station is the adjacent base station of this base station;

Comparison module 122, for comparing the quantity of the user in the quantity of the user in described first collaboration user set and the second collaboration user set; Wherein, the user in described second collaboration user set is the user needing under this base station to carry out with described second base station cooperating;

Determination module 123, for determining this base station according to comparative result as the dominant base of described 3rd collaboration user set or from base station; Wherein, described 3rd protocols User set is the intersection of described first collaboration user set and described second collaboration user set;

Sending module 124, for sending the first cooperation acknowledge message to described second base station, described first cooperation acknowledge message is used to indicate this base station and sets up cooperation relation for described 3rd collaboration user set and described second base station, and described first cooperates that to carry this base station in acknowledge message be as the described dominant base of the 3rd collaboration user set or the indication information from base station.

Preferably, determination module 123, also for:

Preferably, sending module 124, also for sending the second cooperation request message to the 3rd base station; Wherein, described 3rd base station is the adjacent base station of this base station, and has under this base station and need and the user of the 3rd base station collaboration, described 3rd base station and described second base station identical or different;

Receiver module 121, also for receiving the second cooperation acknowledge message that described 3rd base station sends according to described second cooperation request message, described second cooperation acknowledge message is used to indicate described 3rd base station and sets up cooperation relation for the 4th collaboration user set and this base station, and carries described 3rd base station as the described dominant base of the 4th collaboration user set or the indication information from base station in described second cooperation acknowledge message; Wherein, the user carrying out with this base station cooperating is needed under needing the user that carries out with described 3rd base station cooperating and described 3rd base station under described 4th collaboration user set comprises this base station.

Preferably, determination module 123, also for:

Obtain the measurement report that the user in the user's set in described N number of candidate's cooperative base station corresponding to each candidate's cooperative base station reports; According to the measurement report got, determine the RSRP total value that in described N number of candidate's cooperative base station, each candidate's cooperative base station is corresponding, a RSRP total value corresponding to candidate's cooperative base station refers to the summation of the RSRP to described first base station of all reporting of user in user's set that this candidate's cooperative base station is corresponding;

Preferably, determination module 123, also for:

The user can carried out cooperating as required in the base station provided by the embodiment of the present invention gathers and sets up master slave relation, thus can form cooperation relation set dynamically between base station and base station in the mobile communication network.Meanwhile, the problem of the adaptive ability difference completing cooperation set can also be solved in the network planning, and then compared with prior art, be more suitable for the identical networking environment of intensive complexity, improve network to the utilance of frequency spectrum resource.

Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.

The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.

These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.

These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.

Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.

Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.

Claims

1. a co-operating method between base station, it is characterized in that, the method comprises:

2. the method for claim 1, is characterized in that, carries unappropriated band information under described second base station in described first cooperation request message;

3. method as claimed in claim 2, is characterized in that, described first base station also comprises after receiving described first cooperation request message:

4. the method for claim 1, is characterized in that, described first base station, before send described first cooperation acknowledge message to described second base station, also comprises:

5. the method for claim 1, it is characterized in that, if described first base station does not receive cooperation request message or the cooperation acknowledge message of the transmission of any other base station within a cooperation cycle, and under described first base station, have the user needed with the 3rd base station collaboration, described 3rd base station is the adjacent base station of described first base station, then after the next one cooperation cycle in described cooperation cycle starts, also perform following steps:

6. method as claimed in claim 5, is characterized in that, carries unappropriated band information under described first base station in described second cooperation request message;

7. method as claimed in claim 5, is characterized in that, described first base station, before send described second cooperation request message to described 3rd base station, also comprises:

8. method as claimed in claim 7, is characterized in that, if the quantity of user is all identical in the user's set corresponding to the top n candidate cooperative base station after the number of users sequence in user's set, N be greater than 1 integer, then also comprise:

9. method as claimed in claim 8, is characterized in that, if the RSRP total value corresponding to M candidate's cooperative base station before after a RSRP total value sequence is all identical, M be greater than 1 integer, then also comprise:

10. method as claimed in claim 9, is characterized in that, if the 2nd RSRP total value corresponding to K candidate's cooperative base station before after the 2nd RSRP total value sequence is all identical, K be greater than 1 integer, then also comprise:

11. 1 kinds of base stations, is characterized in that, comprising: receiver module, comparison module, determination module and sending module;

12. base stations as claimed in claim 11, is characterized in that, carry unappropriated band information under described second base station in described first cooperation request message;

13. base stations as claimed in claim 11, is characterized in that, described determination module, also for:

14. base stations as claimed in claim 11, is characterized in that, described determination module, also for:

15. base stations as claimed in claim 11, is characterized in that,

Described sending module, also for sending the second cooperation request message to the 3rd base station; Wherein, described 3rd base station is the adjacent base station of this base station, and has under this base station and need and the user of the 3rd base station collaboration, described 3rd base station and described second base station identical or different;

16. base stations as claimed in claim 15, is characterized in that, carry unappropriated band information under described first base station in described second cooperation request message;

17. base stations as claimed in claim 15, is characterized in that, described determination module, also for:

18. base stations as claimed in claim 17, is characterized in that, described determination module, also for:

19. base stations as claimed in claim 18, is characterized in that, described determination module, also for:

20. base stations as claimed in claim 19, is characterized in that, described determination module, also for: