CN103874123A - Coordinated multiple points communication-based coordinated cell set determination method and base station - Google Patents
Coordinated multiple points communication-based coordinated cell set determination method and base station Download PDFInfo
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- CN103874123A CN103874123A CN201210547863.1A CN201210547863A CN103874123A CN 103874123 A CN103874123 A CN 103874123A CN 201210547863 A CN201210547863 A CN 201210547863A CN 103874123 A CN103874123 A CN 103874123A
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Abstract
The invention discloses a coordinated multiple points communication-based coordinated cell set determination method and a base station, and relates to the field of mobile communication. The method comprises the following steps that the base station where a dominant serving cell is located receives the channel state information, reported by users in a local management region, of non-dominant serving cells, and determines an alternative coordinated cell set according to reporting frequency and channel quality; the base station collects the load information of alternative coordinated cells, and establishes a preferable coordinated cell set by using the alternative coordinated cells of which the loads do not exceed a threshold; the base station determines the users for coordinated multiple points communication according to received signal quality fed back by the users and the information of the user for the coordinated multiple points communication; the base station selects the cells from the preferable coordinated cell set to establish a coordinated cell set according to user performance and cell load conditions after the adoption of the coordinated multiple points communication. According to the method and the base station, user factors and system factors are taken into full account in processes of determining the preferable coordinated cell set and the coordinated cell set, so that the coordinated cells can be flexibly selected, the overall system performance of the system can be combined, and the receiving quality of cell edge users can be effectively improved.
Description
Technical field
The present invention relates to moving communicating field, particularly method and base station are determined in the set of a kind of cooperation cell based on multipoint cooperative.
Background technology
Senior Long Term Evolution (Long-Term Evolution-Advanced, being called for short LTE-A) technology is 3rd Generation Partnership Project (3rd Generation Partnership project, be called for short 3GPP) Long Term Evolution (the Long-Term Evolution that proposes about the demand of 4G scheme for meeting ITU, be called for short LTE) later release of technology, requirements at the higher level for ITU to wireless communication technology, LTE-A has taked OFDM (Orthogonal Frequency Division Multiplexing, be called for short OFDM), Multiinputoutput (Multi-input and Multi-output, be called for short MIMO) technology, carrier aggregation (Carrier Aggregation, be called for short CA) etc. present stage wireless communication field advanced technology, capacity and the spectrum efficiency of wireless communication system are significantly improved.Because the provisional capital up and down of LTE-A system adopts the orthogonal multi-access mode based on OFDM, community internal user disturbs less, main user's interference of disturbing as minizone.When user is during in cell edge, due to the interference of outer community and the deterioration of transmission link performance, affect user's reception, cause Cell Edge User spectrum efficiency to reduce, system ovelay range reduces.For this reason, industry proposes to adopt multipoint cooperative (Coordinated Multiple Points is called for short CoMP) technology to solve presence of intercell interference, elevator system spectrum efficiency.
Multipoint cooperative technology refers to multiple transfer points that geographical position separates, the collaborative transfer of data that participates in same user terminal.Multipoint cooperative technology mainly comprises Combined Treatment and collaborative figuration.Combined Treatment technology refers at downlink transmission direction, the packet sending to this user terminal is all preserved in all cooperation cell that are a subscriber terminal service, system is different from business demand according to scheduling result, selects part community wherein or all communities to this user terminal to transmit data.Collaborative figuration technology refers to that multipoint cooperative minizone, by coordinating the beam direction of transmitted signal, avoids wave beam larger interference ratio, reaches the object that reduces minizone phase mutual interference.Visible, an important step of multipoint cooperative technology, be exactly system in the time providing coordinated multipoint transmission for user, need choose reasonable to participate in composition cooperation cell, the community set of coordinated multipoint transmission, cooperate as user provides transmission service, promote user's spectrum efficiency.
Existing cooperation cell set option method has two classes.One class is the mode based on system, and in the time that user initiates coordinated multipoint transmission request, system is according to the distribution situation of the residing position of user and network small area, adjacent or composition cooperation cell, compare great community set that influences each other by several.Another kind of is mode based on user, in the time that user terminal judges that received signal quality is bad, the main community that affects this user terminal is reported to system, and system is according to the cell information of user terminal to send up, by composition cooperation cell, some communities set wherein.
Based on the mode of system, take relatively-stationary location-based way to select the set of composition cooperation cell, some communities, very flexible, may exist the better community of channel circumstance not to be selected into the situation of cooperation cell set, and systematic function promotes limited.
Based on user's mode, according to the cooperation cell set of user's request dynamic formation arbitrary size, do not consider the cell conditions of selected community, as load, the grade of service etc., do not take into account the overall performance of system, and easily cause the whole network scheduling, system implementation complexity is too high.
Summary of the invention
An embodiment of the present invention technical problem to be solved is: solve based on system mode and determine cooperation cell set very flexible and determine that based on user mode cooperation cell set does not take into account the problem of the overall performance of system.
An aspect of the embodiment of the present invention provides the set of a kind of cooperation cell based on multipoint cooperative to determine method, comprise: the base station at place, main Serving cell receives the channel condition information of the non-main Serving cell of reporting of user in this management area, according to reporting frequency and channel quality to determine the alternative set in cooperation cell; Alternative cooperation cell in the alternative set in described base station and described cooperation cell connects, and collects the information on load of alternative cooperation cell, and preferably gather the composition cooperation cell, alternative cooperation cell that load is no more than to default thresholding; The user who carries out multipoint cooperative is determined according to the received signal quality of user feedback and multipoint cooperative user profile in described base station; Described base station is according to taking user performance and the cell load situation after multipoint cooperative, selects the cooperation cell set of carrying out the user of multipoint cooperative described in the composition of community from preferably gather described cooperation cell.
Described according to reporting frequency and channel quality to determine that the alternative set in cooperation cell specifically comprises: frequency threshold value and quality threshold to be set, will to report frequency to exceed community that frequency threshold value and channel quality exceed quality threshold as the alternative set in composition cooperation cell, alternative cooperation cell; Or, alternative threshold value is set, and the weights that report frequency and channel quality are set, will report after frequency and channel quality weighted average, exceed the community of alternative threshold value as the alternative set in composition cooperation cell, alternative cooperation cell.
Described base station determines that according to the received signal quality of user feedback and multipoint cooperative user profile the user who carries out multipoint cooperative specifically comprises: described base station using received signal quality lower than the user of default thresholding as alternative multipoint cooperative user; According to multipoint cooperative user profile, alternative multipoint cooperative user is carried out to request priority sequence, determine the user who carries out multipoint cooperative according to request priority ranking results; Wherein, described multipoint cooperative user profile comprises that user applies for speed, user's present rate and application service priority.
Described base station is according to taking user performance and the cell load situation after multipoint cooperative, selects the cooperation cell set of carrying out the user of multipoint cooperative described in the composition of community and specifically comprises: described base station selects to take the user performance after multipoint cooperative to sort preceding community as cooperation cell from preferably gather described cooperation cell from preferably gather described cooperation cell; In the time that the cooperation cell of selecting does not reach specified quantity, from preferably gathering, described cooperation cell continues to select cell load compare Qing community as cooperation cell; The user's of multipoint cooperative cooperation cell set will be carried out described in the cooperation cell composition of selecting.
The method also comprises: described base station is preferably gathered and dynamically updated the alternative set in described cooperation cell and described cooperation cell.
Another aspect of the embodiment of the present invention provides a kind of base station, comprise: alternative set determining unit, for receiving the channel condition information of the non-main Serving cell of reporting of user in this management area, according to reporting frequency and channel quality to determine the alternative set in cooperation cell; Preferably set determining unit, for connecting with the alternative cooperation cell of the alternative set in described cooperation cell, collects the information on load of alternative cooperation cell, and preferably gather the composition cooperation cell, alternative cooperation cell that load is no more than to default thresholding; User's determining unit, for determining according to the received signal quality of user feedback and multipoint cooperative user profile the user who carries out multipoint cooperative; Cooperation cell set determining unit for according to taking user performance and the cell load situation after multipoint cooperative, is selected the cooperation cell set of carrying out the user of multipoint cooperative described in the composition of community from preferably gather described cooperation cell.
Described alternative set determining unit, specifically for frequency threshold value and quality threshold are set, will report frequency to exceed community that frequency threshold value and channel quality exceed quality threshold as the alternative set in composition cooperation cell, alternative cooperation cell; Or, alternative threshold value is set, and the weights that report frequency and channel quality are set, will report after frequency and channel quality weighted average, exceed the community of alternative threshold value as the alternative set in composition cooperation cell, alternative cooperation cell.
Described user's determining unit, specifically for using received signal quality lower than the user of default thresholding as alternative multipoint cooperative user; According to multipoint cooperative user profile, alternative multipoint cooperative user is carried out to request priority sequence, determine the user who carries out multipoint cooperative according to request priority ranking results; Wherein, described multipoint cooperative user profile comprises that user applies for speed, user's present rate and application service priority.
Described cooperation cell set determining unit, takes the user performance after multipoint cooperative to sort preceding community as cooperation cell specifically for selecting from preferably gather described cooperation cell; In the time that the cooperation cell of selecting does not reach specified quantity, from preferably gathering, described cooperation cell continues to select cell load compare Qing community as cooperation cell; The user's of multipoint cooperative cooperation cell set will be carried out described in the cooperation cell composition of selecting.
This base station also comprises: set updating block, and for the alternative set in described cooperation cell and described cooperation cell are preferably gathered and are dynamically updated.
Report frequency and the channel quality of the present invention during according to the channel condition information of reporting of user community determined the alternative set in cooperation cell, then from alternative set, determining cooperation cell according to cell load situation preferably gathers, and according to user performance and the cell load situation taked after multipoint cooperative, from preferred set, select community composition user's cooperation cell set, in the deterministic process of preferably set and cooperation cell set, all take into full account the impact of user's factor and system factor, combine based on user with based on system and determine the advantage that gather cooperation cell, can balance sysmte overall performance and user's specific requirement, can either select flexibly cooperation cell, can take into account again entire system performance, can effectively improve the quality of reception of Cell Edge User.
By the detailed description to exemplary embodiment of the present invention referring to accompanying drawing, it is clear that further feature of the present invention and advantage thereof will become.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic flow sheet that the present invention is based on the definite embodiment of method of cooperation cell set of multipoint cooperative.
Fig. 2 is the schematic flow sheet that the present invention is based on definite another embodiment of method of cooperation cell set of multipoint cooperative.
Fig. 3 is the structural representation of the embodiment in base station of the present invention.
Fig. 4 is the structural representation of another embodiment of base station of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Unless illustrate in addition, otherwise the parts of setting forth in these embodiments and positioned opposite, numeral expression formula and the numerical value of step not limited the scope of the invention.
, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not to draw according to actual proportionate relationship meanwhile.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in suitable situation, described technology, method and apparatus should be regarded as authorizing a part for specification.
In all examples with discussing shown here, it is exemplary that any occurrence should be construed as merely, rather than as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: in similar label and letter accompanying drawing below, represent similar terms, therefore, once be defined in an a certain Xiang Yi accompanying drawing, in accompanying drawing subsequently, do not need it to be further discussed.
Fig. 1 is the schematic flow sheet that the present invention is based on the definite embodiment of method of cooperation cell set of multipoint cooperative.As shown in Figure 1, the method for this embodiment comprises the following steps:
S102, the base station at place, main Serving cell receives the channel condition information of the non-main Serving cell of reporting of user in this management area, according to reporting frequency and channel quality to determine the alternative set in cooperation cell.
Wherein, report that frequency is larger, channel quality Yue Hao community, larger as the probability of alternative cooperation cell.Based on this principle, the present embodiment provides the method for two kinds of exemplary alternative set in definite cooperation cell.
First method, can arrange frequency threshold value and quality threshold, will report frequency to exceed community that frequency threshold value and channel quality exceed quality threshold as the alternative set in composition cooperation cell, alternative cooperation cell.
Second method, can arrange alternative threshold value, and the weights that report frequency and channel quality are set, and will report after frequency and channel quality weighted average, exceeds the community of alternative threshold value as the alternative set in composition cooperation cell, alternative cooperation cell.
S104, the alternative cooperation cell in the alternative set in the base station at place, main Serving cell and cooperation cell connects, and collects the information on load of alternative cooperation cell, and preferably gather the composition cooperation cell, alternative cooperation cell that load is no more than to default thresholding.
Wherein, the base station at place, main Serving cell can be set up X2 with the base station at place, alternative cooperation cell and is connected.
S106, the user who carries out multipoint cooperative is determined according to the received signal quality of user feedback and multipoint cooperative user profile in the base station at place, main Serving cell.
Particularly, the base station at place, main Serving cell judges that whether user's received signal quality is lower than default thresholding, using received signal quality lower than the user of default thresholding as alternative multipoint cooperative user, wherein, received signal quality can be for example the Signal to Interference plus Noise Ratio (SINR) that receives signal; Then, multipoint cooperative user profile is collected in the base station at place, main Serving cell, and wherein multipoint cooperative user profile for example comprises that user applies for speed, user's present rate and application service priority etc.; Then, according to multipoint cooperative user profile, alternative multipoint cooperative user is carried out to request priority sequence, determine the user who carries out multipoint cooperative according to request priority ranking results, for example, user the highest request priority can be defined as carrying out the user of multipoint cooperative.
The present embodiment also provides a kind of request priority computational methods, and its formula is expressed as follows:
In above-mentioned formula, T represents request priority, argmax() expression selection maximum, V
r(t) represent that user applies for speed, V
s(t) represent user's present rate, C
subrepresent application service priority, ε represents a minimum of presetting.
S108, the base station at place, main Serving cell, according to taking user performance and the cell load situation after multipoint cooperative, is selected community composition and is carried out the user's of multipoint cooperative cooperation cell set from preferably gather cooperation cell.
Particularly, the base station at place, main Serving cell selects to take the user performance after multipoint cooperative to sort preceding community as cooperation cell from preferably gather cooperation cell, can select one or more; In the time that the cooperation cell of selecting does not reach specified quantity, from preferably gathering, cooperation cell continues to select cell load compare Qing community as cooperation cell; The cooperation cell composition of selecting is carried out to the user's of multipoint cooperative cooperation cell set.
The present embodiment also provides a kind of method of definite cooperation cell set, comprising:
(1) the statistics cooperation cell, base station at place, main Serving cell preferably gather in each cell i can distribute to the mean carrier that user carries out multipoint cooperative and count S
i, formula is expressed as follows:
Wherein, V
r(t) represent that user applies for speed, M represents user's average constellation.
(2) the statistics cooperation cell, base station at place, main Serving cell preferably gather in the load condition O of each cell i
i, formula is expressed as follows:
Wherein, U
iexpression cell i has been distributed to user's sub-carrier number, N
irepresent total sub-carrier number of cell i.
(3) work as S
i+ U
i<N
itime, the base station at place, main Serving cell is calculated and is taked multipoint cooperative and do not take SINR ratio Q in two kinds of situations, and formula is expressed as follows:
Wherein, SINR
comprepresent the user's who takes multipoint cooperative Signal to Interference plus Noise Ratio SINR, SINR
non-comprepresent the user's who does not take multipoint cooperative Signal to Interference plus Noise Ratio SINR.
Wherein, H
ikrepresent the channel gain matrix of cell i to user k, W
irepresent the pre-coding matrix of cell i, P
ithe transmitting power that represents cell i, N represents noise gross power, H
jkrepresent the channel gain matrix of community j to user k, W
jrepresent the pre-coding matrix of community j, P
jrepresent the transmitting power of community j.
(4) base station at place, main Serving cell is selected to take multipoint cooperative and is not taked SINR ratio Q in two kinds of situations to sort preceding community as cooperation cell from preferably gather cooperation cell, can select one or more; In the time that the cooperation cell of selecting does not reach specified quantity, from preferably gathering, cooperation cell continues to select cell load compare Qing community as cooperation cell; The cooperation cell composition of selecting is carried out to the user's of multipoint cooperative cooperation cell set.
Above-described embodiment, report frequency and the channel quality of the base station at place, main Serving cell during according to the channel condition information of reporting of user community determined the alternative set in cooperation cell, then from alternative set, determining cooperation cell according to cell load situation preferably gathers, and according to user performance and the cell load situation taked after multipoint cooperative, from preferred set, select community composition user's cooperation cell set, in the deterministic process of preferably set and cooperation cell set, all take into full account the impact of user's factor and system factor, combine based on user with based on system and determine the advantage that gather cooperation cell, can balance sysmte overall performance and user's specific requirement, can either select flexibly cooperation cell, can take into account again entire system performance, can effectively improve the quality of reception of Cell Edge User.
After cooperation cell set is determined, be after cooperation cell has been selected, multipoint cooperative, is applied to complete multipoint cooperative each cooperation point in the running time-frequency resource information notice cooperation cell set of cooperation cell aggregate information, multipoint cooperative user assignment with the base station at place, householder Serving cell.
The base station at place, main Serving cell can also preferably be gathered and dynamically update the alternative set in cooperation cell and cooperation cell.Particularly, the base station at place, main Serving cell can exceed cell load the community of default thresholding and delete from preferably gather cooperation cell, the community that is not selected as cooperation cell in some cycles can also be deleted from the alternative set in cooperation cell, can also be according to the non-service cell channel condition information of reporting of user in management area, according to reporting frequency and channel quality, other potential cooperation cell that are not included into the alternative set in cooperation cell are supplemented to the alternative set into cooperation cell, can also further set up X2 with this base station, place, alternative cooperation cell is connected, collect this cell load status information, the community that load is no more than to default thresholding is included cooperation cell in and is preferably gathered.
Fig. 2 is the schematic flow sheet that the present invention is based on definite another embodiment of method of cooperation cell set of multipoint cooperative.As shown in Figure 2, the method for this embodiment comprises the following steps:
S202, the base station at place, main Serving cell receives the channel condition information of the non-main Serving cell of reporting of user in this management area, according to reporting frequency and channel quality to determine the alternative set in cooperation cell.
S204, the alternative cooperation cell in the alternative set in the base station at place, main Serving cell and cooperation cell connects, and collects the information on load of alternative cooperation cell, and preferably gather the composition cooperation cell, alternative cooperation cell that load is no more than to default thresholding.
S206, the base station at place, main Serving cell judges that whether user's received signal quality is lower than default thresholding, using received signal quality lower than the user of default thresholding as alternative multipoint cooperative user, wherein, received signal quality can be for example the Signal to Interference plus Noise Ratio (SINR) that receives signal.
S208, multipoint cooperative user profile is collected in the base station at place, main Serving cell, and wherein multipoint cooperative user profile for example comprises that user applies for speed, user's present rate and application service priority etc.
S210, the base station at place, main Serving cell is carried out request priority sequence according to multipoint cooperative user profile to alternative multipoint cooperative user, determine the user who carries out multipoint cooperative according to request priority ranking results, for example, user the highest request priority can be defined as carrying out the user of multipoint cooperative.
S212, the base station at place, main Serving cell, according to taking user performance and the cell load situation after multipoint cooperative, is selected community composition and is carried out the user's of multipoint cooperative cooperation cell set from preferably gather cooperation cell.
S214, after cooperation cell set is determined, be after cooperation cell has been selected, multipoint cooperative, is applied to complete multipoint cooperative each cooperation point in the running time-frequency resource information notice cooperation cell set of cooperation cell aggregate information, multipoint cooperative user assignment with the base station at place, householder Serving cell.
S216, the base station at place, main Serving cell can also preferably be gathered and dynamically update the alternative set in cooperation cell and cooperation cell, and concrete renewal process can, with reference to aforementioned, repeat no more here.
Above-described embodiment, report frequency and the channel quality of the base station at place, main Serving cell during according to the channel condition information of reporting of user community determined the alternative set in cooperation cell, then from alternative set, determining cooperation cell according to cell load situation preferably gathers, and according to user performance and the cell load situation taked after multipoint cooperative, from preferred set, select community composition user's cooperation cell set, in the deterministic process of preferably set and cooperation cell set, all take into full account the impact of user's factor and system factor, combine based on user with based on system and determine the advantage that gather cooperation cell, can balance sysmte overall performance and user's specific requirement, can either select flexibly cooperation cell, can take into account again entire system performance, can effectively improve the quality of reception of Cell Edge User.
Fig. 3 is the structural representation of the embodiment in base station of the present invention.The base station at place, Wei Zhu Serving cell, this base station.As shown in Figure 3, the base station of this embodiment comprises:
Alternative set determining unit 301, for receiving the channel condition information of the non-main Serving cell of reporting of user in this management area, according to reporting frequency and channel quality to determine the alternative set in cooperation cell;
Preferably set determining unit 302, for connecting with the alternative cooperation cell of the alternative set in cooperation cell, collects the information on load of alternative cooperation cell, and preferably gather the composition cooperation cell, alternative cooperation cell that load is no more than to default thresholding;
User's determining unit 303, for determining according to the received signal quality of user feedback and multipoint cooperative user profile the user who carries out multipoint cooperative; And
Cooperation cell set determining unit 304 for according to taking user performance and the cell load situation after multipoint cooperative, is selected community composition and is carried out the user's of multipoint cooperative cooperation cell set from preferably gather cooperation cell.
Alternative set determining unit 301, specifically for frequency threshold value and quality threshold are set, will report frequency to exceed community that frequency threshold value and channel quality exceed quality threshold as the alternative set in composition cooperation cell, alternative cooperation cell; Or, alternative threshold value is set, and the weights that report frequency and channel quality are set, will report after frequency and channel quality weighted average, exceed the community of alternative threshold value as the alternative set in composition cooperation cell, alternative cooperation cell.
User's determining unit 303, specifically for using received signal quality lower than the user of default thresholding as alternative multipoint cooperative user; According to multipoint cooperative user profile, alternative multipoint cooperative user is carried out to request priority sequence, determine the user who carries out multipoint cooperative according to request priority ranking results; Wherein, multipoint cooperative user profile comprises that user applies for speed, user's present rate and application service priority.
Cooperation cell set determining unit 304, takes the user performance after multipoint cooperative to sort preceding community as cooperation cell specifically for selecting from preferably gather cooperation cell; In the time that the cooperation cell of selecting does not reach specified quantity, from preferably gathering, cooperation cell continues to select cell load compare Qing community as cooperation cell; The cooperation cell composition of selecting is carried out to the user's of multipoint cooperative cooperation cell set.
Fig. 4 is the structural representation of another embodiment of base station of the present invention.As shown in Figure 4, the base station of this embodiment also comprises: set updating block 405, and for the alternative set in cooperation cell and cooperation cell are preferably gathered and are dynamically updated.
Above-described embodiment, report frequency and the channel quality of the base station at place, main Serving cell during according to the channel condition information of reporting of user community determined the alternative set in cooperation cell, then from alternative set, determining cooperation cell according to cell load situation preferably gathers, and according to user performance and the cell load situation taked after multipoint cooperative, from preferred set, select community composition user's cooperation cell set, in the deterministic process of preferably set and cooperation cell set, all take into full account the impact of user's factor and system factor, combine based on user with based on system and determine the advantage that gather cooperation cell, can balance sysmte overall performance and user's specific requirement, can either select flexibly cooperation cell, can take into account again entire system performance, can effectively improve the quality of reception of Cell Edge User.
One of ordinary skill in the art will appreciate that all or part of step that realizes above-described embodiment can complete by hardware, also can carry out the hardware that instruction is relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a method is determined in the set of the cooperation cell based on multipoint cooperative, comprising:
The base station at place, main Serving cell receives the channel condition information of the non-main Serving cell of reporting of user in this management area, according to reporting frequency and channel quality to determine the alternative set in cooperation cell;
Alternative cooperation cell in the alternative set in described base station and described cooperation cell connects, and collects the information on load of alternative cooperation cell, and preferably gather the composition cooperation cell, alternative cooperation cell that load is no more than to default thresholding;
The user who carries out multipoint cooperative is determined according to the received signal quality of user feedback and multipoint cooperative user profile in described base station;
Described base station is according to taking user performance and the cell load situation after multipoint cooperative, selects the cooperation cell set of carrying out the user of multipoint cooperative described in the composition of community from preferably gather described cooperation cell.
2. method according to claim 1, is characterized in that, described according to reporting frequency and channel quality to determine that the alternative set in cooperation cell specifically comprises:
Frequency threshold value and quality threshold are set, will report frequency to exceed community that frequency threshold value and channel quality exceed quality threshold as the alternative set in composition cooperation cell, alternative cooperation cell;
Or,
Alternative threshold value is set, and the weights that report frequency and channel quality are set, will report after frequency and channel quality weighted average, exceed the community of alternative threshold value as the alternative set in composition cooperation cell, alternative cooperation cell.
3. method according to claim 1, is characterized in that, described base station determines that according to the received signal quality of user feedback and multipoint cooperative user profile the user who carries out multipoint cooperative specifically comprises:
Described base station using received signal quality lower than the user of default thresholding as alternative multipoint cooperative user;
According to multipoint cooperative user profile, alternative multipoint cooperative user is carried out to request priority sequence, determine the user who carries out multipoint cooperative according to request priority ranking results;
Wherein, described multipoint cooperative user profile comprises that user applies for speed, user's present rate and application service priority.
4. method according to claim 1, it is characterized in that, described base station is according to taking user performance and the cell load situation after multipoint cooperative, selects the cooperation cell set of carrying out the user of multipoint cooperative described in the composition of community and specifically comprise from preferably gather described cooperation cell:
Described base station selects to take the user performance after multipoint cooperative to sort preceding community as cooperation cell from preferably gather described cooperation cell;
In the time that the cooperation cell of selecting does not reach specified quantity, from preferably gathering, described cooperation cell continues to select cell load compare Qing community as cooperation cell;
The user's of multipoint cooperative cooperation cell set will be carried out described in the cooperation cell composition of selecting.
5. method according to claim 1, is characterized in that, also comprises:
Described base station is preferably gathered and is dynamically updated the alternative set in described cooperation cell and described cooperation cell.
6. a base station, comprising:
Alternative set determining unit, for receiving the channel condition information of the non-main Serving cell of reporting of user in this management area, according to reporting frequency and channel quality to determine the alternative set in cooperation cell;
Preferably set determining unit, for connecting with the alternative cooperation cell of the alternative set in described cooperation cell, collects the information on load of alternative cooperation cell, and preferably gather the composition cooperation cell, alternative cooperation cell that load is no more than to default thresholding;
User's determining unit, for determining according to the received signal quality of user feedback and multipoint cooperative user profile the user who carries out multipoint cooperative;
Cooperation cell set determining unit for according to taking user performance and the cell load situation after multipoint cooperative, is selected the cooperation cell set of carrying out the user of multipoint cooperative described in the composition of community from preferably gather described cooperation cell.
7. base station according to claim 6, is characterized in that, described alternative set determining unit, specifically for
Frequency threshold value and quality threshold are set, will report frequency to exceed community that frequency threshold value and channel quality exceed quality threshold as the alternative set in composition cooperation cell, alternative cooperation cell;
Or,
Alternative threshold value is set, and the weights that report frequency and channel quality are set, will report after frequency and channel quality weighted average, exceed the community of alternative threshold value as the alternative set in composition cooperation cell, alternative cooperation cell.
8. base station according to claim 6, is characterized in that, described user's determining unit, specifically for
Using received signal quality lower than the user of default thresholding as alternative multipoint cooperative user;
According to multipoint cooperative user profile, alternative multipoint cooperative user is carried out to request priority sequence, determine the user who carries out multipoint cooperative according to request priority ranking results;
Wherein, described multipoint cooperative user profile comprises that user applies for speed, user's present rate and application service priority.
9. base station according to claim 6, is characterized in that, described cooperation cell set determining unit, specifically for
From preferably gathering, described cooperation cell selects to take the user performance after multipoint cooperative to sort preceding community as cooperation cell;
In the time that the cooperation cell of selecting does not reach specified quantity, from preferably gathering, described cooperation cell continues to select cell load compare Qing community as cooperation cell;
The user's of multipoint cooperative cooperation cell set will be carried out described in the cooperation cell composition of selecting.
10. base station according to claim 6, is characterized in that, also comprises:
Set updating block, for preferably gathering and dynamically update the alternative set in described cooperation cell and described cooperation cell.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN104219709B (en) * | 2014-09-17 | 2018-07-24 | 武汉理工大学 | A kind of selection method for LTE-A COMP cooperation set |
| CN112449356A (en) * | 2019-08-29 | 2021-03-05 | 大唐移动通信设备有限公司 | Method for determining cooperative cell and base station |
| CN112188575A (en) * | 2020-09-14 | 2021-01-05 | 中标慧安信息技术股份有限公司 | Inter-cell communication switching method based on cooperative mode |
| CN112188575B (en) * | 2020-09-14 | 2021-07-27 | 中标慧安信息技术股份有限公司 | Inter-cell communication switching method based on cooperative mode |
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| CN103874123B (en) | 2018-03-27 |
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