CN105517161B - A kind of descending resource allocation method and base station - Google Patents
A kind of descending resource allocation method and base station Download PDFInfo
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- CN105517161B CN105517161B CN201410535168.2A CN201410535168A CN105517161B CN 105517161 B CN105517161 B CN 105517161B CN 201410535168 A CN201410535168 A CN 201410535168A CN 105517161 B CN105517161 B CN 105517161B
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Abstract
The invention discloses a kind of descending resource allocation method and base stations, descending resource allocation method includes: to judge whether the central user of serving cell is located in the arrival angular region of the CoMP user of the adjacent cell of serving cell, if the central user of serving cell is located in the arrival angular region of the CoMP user of the adjacent cell of serving cell, adjusts the frequency band that the frequency band that central user communication uses is occupied with CoMP user in CoMP user list and do not repeat；Wherein, CoMP user list is to be obtained according to the RSRP of the most strong adjacent cell of the RSRP and serving cell of serving cell where user.This method feedback quantity is small, and the transinformation content between cell is small, is not necessarily to real-time, interactive scheduling related information, has been compatible with the current mechanism of LTE system to greatest extent in terms of feedback mechanism and X2 interface capacity, has been easy to implement.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of descending resource allocation method and base station.
Background technique
In long term evolution (Long Term Evolution, abbreviation LTE) system, the handling capacity of Cell Edge User is remote
Far below the handling capacity of Cell Center User.In order to improve the data rate of Cell Edge User transmission, and the entire system of raising
The handling capacity of system and average throughput efficiency introduce one kind in the evolution (LTE-Advanced, abbreviation LTE-A) of LTE multiple
The separated transfer point in geographical location carries out collaboration transmission or received method, third generation cooperative partner program (The Third
Generation Partnership Project, abbreviation 3GPP) it is referred to as collaboration multiple spot technology (Coordinated
Multi-Point Transmission/Reception, abbreviation CoMP).
Currently, downlink CS/CB CoMP algorithm mainly has the CS/CB CoMP algorithm based on space covariance matrix feedback,
Since based on explicit channel status/statistical information feedback, the end UE terminal needs to obtain and feedback space covariance matrix, base station end
According to the space covariance matrix of feedback, calculating peak signal leakage noise ratio (Signal to Leakage and is utilized
Noise Ratio, abbreviation SLNR) method carry out beam shape-endowing weight value matrix solution, and then complete CoMP cooperation transmission, can
To realize in CoMP cooperative groups the shared of channel information between cell to greatest extent, to improve the property of Cell Edge User
Energy.
But the above method there are the drawbacks of be exactly that the information content that needs to feed back in whole process is excessive, to existing LTE system
Feedback mechanism and X2 interface (interface i.e. between base station and base station) capacity require modification by a relatively large margin, compatibility is very
Difference is not easy to realize.
Summary of the invention
It is larger and influence system compatibility in order to solve the information content for needing to feed back in prior art CoMP collaborative processes
Technical problem, on the one hand,
The present invention provides a kind of descending resource allocation methods, comprising:
Judge whether the central user of serving cell is located at the collaboration multiple spot CoMP user of the adjacent cell of the serving cell
Arrival angular region in, if the central user of the serving cell is located at the CoMP user of the adjacent cell of the serving cell
It reaches in angular region, then adjusts the frequency that CoMP user occupies in the frequency band and CoMP user list that the central user communication uses
Band does not repeat；
Wherein, the CoMP user list be according to the RSRP of serving cell where user and the serving cell most
What the RSRP of strong adjacent cell was obtained, it is occupied in the CoMP user list comprising the CoMP user mark ID and CoMP user ID
Frequency band；
The user includes central user and edge customer, and the edge customer includes CoMP user and non-CoMP user.
Optionally, judge whether the central user of serving cell is located at the collaboration multiple spot of the adjacent cell of the serving cell
Before step in the arrival angular region of CoMP user, the method also includes:
The RSRP of the most strong adjacent cell of the RSRP and serving cell of serving cell where obtaining the CoMP user；
According to the RSRP of serving cell where the RSRP of serving cell where the CoMP user and the CoMP user
Judged with the difference of the RSRP of the most strong adjacent cell of serving cell, if serving cell where meeting the CoMP user
RSRP is greater than the first threshold value, and the RSRP of serving cell and the most strong adjacent cell of serving cell where the CoMP user simultaneously
The difference of RSRP be greater than the second threshold value, then the CoMP user is labeled as non-CoMP user, and by the CoMP user
It is deleted from pre-stored CoMP user list and obtains the CoMP user list；
Wherein, the most strong adjacent cell, which refers in multiple adjacent cells of serving cell, receives the strongest adjacent cell of RSRP.
Optionally, judge whether the central user of serving cell is located at the collaboration multiple spot of the adjacent cell of the serving cell
Before step in the arrival angular region of CoMP user, the method also includes:
The RSRP of serving cell where obtaining the CoMP user；
Whether the RSRP of serving cell is greater than third threshold value where judging the CoMP user, if the CoMP user
The RSRP of place serving cell is greater than third threshold value, then the CoMP user is labeled as central user, and by the CoMP
User deletes from pre-stored CoMP user list and obtains the CoMP user list.
Optionally, judge whether the central user of serving cell is located at the collaboration multiple spot of the adjacent cell of the serving cell
Before step in the arrival angular region of CoMP user, the method also includes:
The most strong adjacent cell of the RSRP and serving cell of serving cell where obtaining the non-CoMP user
RSRP；
To the RSRP of serving cell where the non-CoMP user with the RSRP's of the most strong adjacent cell of the serving cell
Difference is judged, if the RSRP of serving cell where the non-CoMP user and the most strong adjacent cell of the serving cell
The non-CoMP user is then labeled as CoMP user, the non-CoMP user is added by the difference of RSRP less than the 4th threshold value
It is added in the pre-stored CoMP user list and obtains the CoMP user list, while recording mark is CoMP user
Cooperation cell and accordingly available cooperation frequency range.
Optionally, after the step of obtaining the CoMP user list, the central user of the judgement serving cell
Whether it is located at before the step in the arrival angular region of the CoMP user of the adjacent cell of the serving cell, the method is also wrapped
It includes:
The CoMP user list of serving cell is sent to cooperation cell, while the adjacent cell for receiving this serving cell is sent
The CoMP user list come.
On the other hand,
The present invention also provides a kind of base stations, comprising:
Judgment module and adjustment module；
The judgment module is for judging whether the central user of serving cell is located at the adjacent cell of the serving cell
In the arrival angular region for cooperateing with multiple spot CoMP user；
The adjustment module is used to be located at the adjacent cell of the serving cell when the central user of the serving cell
When in the arrival angular region of CoMP user, adjusts CoMP in the frequency band and CoMP user list that the central user communication uses and use
The frequency band that family occupies does not repeat；
Wherein, the CoMP user list be according to the RSRP of serving cell where user and the serving cell most
What the RSRP of strong adjacent cell was obtained, it is occupied in the CoMP user list comprising the CoMP user mark ID and CoMP user ID
Frequency band；
The user includes central user and edge customer, and the edge customer includes CoMP user and non-CoMP user.
Optionally, base station further includes the first removing module, comprising:
First acquisition unit, RSRP and the serving cell for obtaining CoMP user place serving cell are most
The RSRP of strong adjacent cell；
First judging unit, for according to the RSRP of serving cell and CoMP user institute where the CoMP user
Judged in the difference of the RSRP of the most strong adjacent cell of the RSRP and serving cell of serving cell, is used if meeting the CoMP
The RSRP of serving cell is greater than the first threshold value where family, and the RSRP of serving cell and service where the CoMP user simultaneously
The difference of the RSRP of the most strong adjacent cell of cell is greater than the second threshold value, then the CoMP user is labeled as non-CoMP user,
And the CoMP user is deleted from pre-stored CoMP user list and obtains the CoMP user list；
Wherein, the most strong adjacent cell, which refers in multiple adjacent cells of serving cell, receives the strongest adjacent cell of RSRP.
Optionally, base station further includes the second removing module, comprising:
Second acquisition unit, the RSRP for serving cell where obtaining the CoMP user；
Whether second judgment unit, the RSRP for serving cell where judging the CoMP user are greater than third thresholding
The CoMP user is labeled as if the RSRP of serving cell where the CoMP user is greater than third threshold value by value
Heart user, and the CoMP user is deleted from pre-stored CoMP user list and obtains the CoMP user list.
Optionally, the base station further includes adding module, for being judged according to the RSRP of serving cell where CoMP user
Whether non-CoMP user is added in the CoMP user list, comprising:
Third acquiring unit, RSRP and the serving cell for serving cell where obtaining the non-CoMP user
Most strong adjacent cell RSRP；
Third judging unit, for the RSRP of serving cell and the serving cell where the non-CoMP user most
The difference of the RSRP of strong adjacent cell is judged, if the RSRP of serving cell where the non-CoMP user and the service are small
The non-CoMP user is then labeled as CoMP user less than the 4th threshold value by the difference of the RSRP of the most strong adjacent cell in area,
The non-CoMP user, which is added in pre-stored CoMP user list, obtains the CoMP user list, while recording mark
For CoMP user cooperation cell and accordingly can be used cooperation frequency range.
Optionally, the base station further includes sending/receiving module, is used for:
The CoMP user list of serving cell is sent to cooperation cell, while the adjacent cell for receiving this serving cell is sent
The CoMP user list come.
It is small using descending resource allocation method information feedback amount provided by the invention, the transinformation content between cooperation cell
It is small, it is not necessarily to real-time, interactive scheduling related information, has been compatible with LTE system to greatest extent in terms of feedback mechanism and X2 interface capacity
Current mechanism, compatibility is improved, and is easy to implement.
Detailed description of the invention
Fig. 1 is CoMP network model schematic diagram in the embodiment of the present invention one；
Fig. 2 is a kind of step flow chart of the descending resource allocation method provided in the embodiment of the present invention two；
Fig. 3 is the distribution schematic diagram of edge band in the embodiment of the present invention two；
Fig. 4 is the step flow chart that CoMP user becomes non-CoMP user in the embodiment of the present invention two；
Fig. 5 is the step flow chart that CoMP user becomes central user in the embodiment of the present invention two；
Fig. 6 is the step flow chart that non-CoMP user becomes CoMP user in the embodiment of the present invention two；
Fig. 7 is the flow chart that CoMP user exits in the embodiment of the present invention two；
Fig. 8 is that the flow chart exited is added in CoMP in the embodiment of the present invention two；
Fig. 9 is a kind of composition schematic diagram of the base station provided in the embodiment of the present invention three；
Figure 10 is a kind of composition schematic diagram of the base station provided in the embodiment of the present invention four.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
It should be noted that the concept of " serving cell " and " adjacent cell " in embodiment one and embodiment two is opposite
, it is not absolute, for example, for certain primary communication, the cell A in numerous cells is serving cell, cell B and small
Area C is as adjacent cell；But for communicate next time, it may be possible to which cell B is as serving cell, cell A and cell C conduct
Adjacent cell.It should also be noted that, the adjacent cell in the communication technology refers to the cell that can mutually switch in communication process,
It is not the adjacent cell in geographical location.
Embodiment one
A kind of descending resource allocation method is provided in the present embodiment, comprising:
Judge whether the central user of serving cell is located at arriving for the collaboration multiple spot CoMP user of the adjacent cell of serving cell
Up in angular region, if the central user of serving cell is located at the angle of arrival (Angle of the CoMP user of the adjacent cell of serving cell
Of Arrival, abbreviation AOA) in range, then adjusts CoMP in the frequency band and CoMP user list that central user communication uses and use
The frequency band that family occupies does not repeat, and reduces interference.
Wherein, CoMP user list is the most strong neighbour of the RSRP and the serving cell according to serving cell where user
What the RSRP of cell was obtained, the frequency band occupied in CoMP user list comprising CoMP user mark ID and CoMP user ID.It is above-mentioned
" user " in " according to the RSRP of serving cell where user " includes central user and edge customer, and edge customer includes CoMP
User and non-CoMP user." most strong adjacent cell " refers to that receive the strongest neighbour of RSRP in multiple adjacent cells of serving cell small
Area.
Since CoMP has the control function of distributed antenna and centralization, semi can be easily carried out
It arranges net, network model schematic diagram is as shown in Figure 1, include 3 base stations (Evolved NodeB, abbreviation eNodeB), each base station
It is connected thereto respectively there are three access point, and each access point may include one or more bay.For user
For equipment (User Equipment, abbreviation UE) or terminal, multiple UE can carry out the biography of data with multiple access points simultaneously
It is defeated, and these access points may belong to the same base station or different base stations.For example, UE1 and access point 1, access point in Fig. 1
2 and access point 3 connect, these three access points belong to base station 1；Similarly, UE2 and access point 4, access point 5 and access point 6 connect
It connects, these three nodes belong to base station 2；UE4 is connect with access point 7, access point 8 and access point 96, these three nodes belong to
Base station 3；And UE3 is connect with access point 5, access point 7 and access point 9, wherein access point 5 belongs to base station 2, access point 7 and access
Point 9 belongs to base station 3.In the transmission process of data, master controller receive each access point transmission information (including letter
Road quality, transmitted data rates etc.) it is determined to make scheduling, the clothes of each user and business are met by distribution resource
Quality (Quality of Service, the abbreviation QoS) demand of business, can improve high data rate covering and cell edge is handled up
Amount, and maximize the throughput performance of whole system.
Downlink CoMP includes referring to carry out cooperative transmission in multiple geographically separated transfer points, mainly includes following two
Transmission mode:
1, Combined Treatment (Joint Processing)
Combined Treatment is divided into joint transmission and dynamic cell selection, wherein joint transmission (Joint Transmission)
It is simultaneously that the same UE carries out Physical Downlink Shared Channel (Physical Downlink Shared for multiple transmission point
Channel, abbreviation PDSCH) transmission, can increase signal transmission quality or reduce activation interference level；
Dynamic cell selection (Dynamic Cell Selection): in order to be dynamically selected one in CoMP operation concentration
Cell carries out the transmission of PDSCH, and synchronization can only have a cell to be transmitted, therefore utilization rate is lower.
2, cooperative scheduling/wave beam forming (assign by Coordinated Scheduling/Beamforming, i.e. collaboration wave beam
Shape, abbreviation CS/CB)
For cooperateing with beamforming technique, only the serving cell of terminal sends data to terminal, participates in cooperation
It is different terminal services that other cells, which can use identical wireless resource block,.Participate in each cell hair of collaboration wave beam forming
It needs basis to coordinate the interference of other cell terminals when the number of delivering letters, is reduced as far as doing other cell terminals
It disturbs.Minizone sends the beam direction of signal by coordination, is effectively shielded from and interferes bigger wave beam, and it is mutual to reach reduction
The purpose of interference, therefore the decision of cooperative scheduling, wave beam forming is that the whole cells concentrated by CoMP operation are made jointly.
Method provided in this embodiment determined by CoMP user list to adjacent cell and AOA information to be needed to avoid
The occupied frequency band of the central user that heart user and needs avoid communicates, and reduces interference suffered by CoMP user,
Improve CoMP user performance.This method has been compatible with showing for LTE system in terms of feedback mechanism and X2 interface capacity to greatest extent
There is mechanism, compatibility is improved significantly, and is easy to implement.
Embodiment two
A kind of descending resource allocation method is provided in the present embodiment, steps flow chart is as shown in Figure 2, comprising the following steps:
Step S1, according to RSRP pairs of the most strong adjacent cell of the RSRP of serving cell where user and the serving cell
CoMP user list is judged and is updated, and is wherein accounted in CoMP user list comprising CoMP user mark ID and CoMP user ID
Frequency band.
User therein includes central user and edge customer, and edge customer includes CoMP user and non-CoMP user.In
Heart user and edge customer are with the Signal to Interference plus Noise Ratio of user (Signal to Interference plus
Noise Ratio, abbreviation SINR) it is used as judgment criteria, SINR is greater than the user-center user of limiting value, and SINR is less than the limit
The user of value is edge customer.Edge customer is further divided into the CoMP user that can carry out collaboration multiple spot technology and cannot be into
The non-CoMP user of row collaboration multiple spot technology.Resource is divided into 3 sections in the present embodiment, each cell has corresponding physical area
It identifies (Physical Cell Identifier, abbreviation PCI), PCI is calculated, and is different according to 3 result of PCI mod,
It occupies frequency range 1,2,3 respectively to use as its edge frequency range for edge customer, as shown in Figure 3.It should be noted that in Fig. 3 only
It is only an example, the other way other than Fig. 3 actually can also be to the distribution of 3 sections of frequency bands, as long as guaranteeing each result
A frequency band is occupied, 3 results occupy different frequency bands respectively.
Step S2, judge whether the central user of serving cell is located at the arrival of the CoMP user of the adjacent cell of serving cell
In angular region, if serving cell central user is located in the arrival angular region of the CoMP user of the adjacent cell of serving cell,
Inquired from CoMP user list CoMP user ID occupancy frequency band, central user using the frequency band that CoMP user ID is occupied with
Outer frequency band is communicated.
Optionally, after step S1 obtains CoMP user list, step S2 judge serving cell central user whether position
Before in the arrival angular region of the CoMP user of the adjacent cell of serving cell, further includes:
Step S1-1, the CoMP user list of serving cell is sent to cooperation cell, while receives this serving cell
The CoMP user list that adjacent cell is sent.
This method does not need a large amount of user feedback, is carried out more according to Reference Signal Received Power to CoMP user list
Newly, central user is found out by comparing the relationship of central user and the angle of arrival of CoMP user forbid the frequency band occupied, so that in
Heart user is communicated from the CoMP user of adjacent cell using different frequency bands, to avoid interfering, improves CoMP user performance.
Optionally, according to the most strong adjacent cell of the RSRP of serving cell where CoMP user and serving cell in step S1
RSRP carries out judgement to CoMP user list and update includes:
Step S11, the RSRP of the most strong adjacent cell of the RSRP and serving cell of serving cell where obtaining CoMP user.
Step S12, according to the RSRP of serving cell where the RSRP of serving cell where CoMP user and CoMP user
Judged with the difference of the RSRP of the most strong adjacent cell of serving cell, if meeting the RSRP of serving cell where CoMP user
Greater than the first threshold value (i.e. RSRPservice> RSRP_Th1, wherein RSRPserviceThe serving cell where CoMP user
RSRP, RSRP_Th1 are the first threshold value), and the most strong neighbour of the RSRP of serving cell where CoMP user and serving cell simultaneously
The difference of the RSRP of cell be greater than the second threshold value (i.e. | RSRPservice-RSRPneighbor| > Delta_RSRP_Th1, wherein
RSRPneighborThe RSRP of the most strong adjacent cell of serving cell where CoMP user, Delta_RSRP_Th1 are the second thresholding
Value), then CoMP user is labeled as non-CoMP user, and the CoMP user is deleted from pre-stored CoMP user list
It removes, obtains the CoMP user list in step S1, received in multiple adjacent cells of serving cell wherein most strong adjacent cell refers to
The strongest adjacent cell of RSRP.Namely when CoMP user meets condition RSRPservice> RSRP_Th and | RSRPservice-
RSRPneighbor| when > Delta_RSRP_Th1, which is deleted from CoMP user list.
In addition, if the RSRP for being unsatisfactory for serving cell where CoMP user is greater than the first threshold value, and CoMP is used simultaneously
The difference of the RSRP of the most strong adjacent cell of the RSRP and serving cell of serving cell where family is greater than the second threshold value, then continues pair
Other CoMP users are judged.And by the CoMP user after deleting in CoMP user list, judge whether completion pair
The judgement of all CoMP users continues service where obtaining CoMP user if not completing the judgement to all CoMP users
The RSRP of cell is judged.
Optionally, according to the Reference Signal Received Power RSRP of serving cell where collaboration multiple spot CoMP user in step S1
CoMP user list is judged and is updated further include:
Step S13, the RSRP of serving cell where obtaining CoMP user.
Step S14, whether the RSRP of serving cell is greater than third threshold value where judging CoMP user, if CoMP user
The RSRP of place serving cell is greater than third threshold value (i.e. RSRPservice> RSRP_Th3, RSRP_Th3 are third threshold value),
CoMP user is then labeled as central user, and CoMP user is deleted from pre-stored CoMP user list and obtains CoMP
User list.
Become the process of non-CoMP user in step S11~S12 from CoMP user for CoMP user, flow chart of steps is as schemed
Shown in 4, and step S13~S14 is the process that CoMP user becomes central user from CoMP user, flow chart of steps such as Fig. 5 institute
Show, wherein for the first threshold value and third threshold value be based on experience value and actual needs select.
Optionally, according to the most strong adjacent cell of serving cell and serving cell where non-CoMP user in step S1
RSRP is updated CoMP user list
Step S15, the most strong adjacent cell of the RSRP and serving cell of serving cell where obtaining non-CoMP user
RSRP。
Step S16, to the RSRP's of the most strong adjacent cell of the RSRP and serving cell of serving cell where non-CoMP user
Difference is judged, if the difference of the RSRP of the most strong adjacent cell of the RSRP and serving cell of serving cell where non-CoMP user
Value less than the 4th threshold value (i.e. | RSRPservice-RSRPneighbor| < Delta_RSRP_Th2), then non-CoMP user is marked
For CoMP user, non-CoMP user is added in pre-stored CoMP user list and obtains CoMP user list, is remembered simultaneously
Record mark be CoMP user cooperation cell and accordingly can be used cooperation frequency range.
In addition, if the difference of the RSRP of the most strong adjacent cell of the RSRP and serving cell of serving cell where non-CoMP user
Value is not less than the 4th threshold value Delta_RSRP_Th2, then continues to judge other non-CoMP users.And by non-CoMP
After user is added in CoMP user list, judge whether to complete the judgement to all non-CoMP users, if do not completed
The RSRP and serving cell for then continue serving cell where obtaining non-CoMP user to the judgement of all non-CoMP users are most
The RSRP of strong adjacent cell is simultaneously judged.
Step S15~S16 is the process that non-CoMP user becomes CoMP user, and flow chart of steps is as shown in Figure 6.It needs
Bright, the execution of above-mentioned steps S11~S12, step S13~S14, step S15~S16 sequentially successively carry out, still
Step S11~S12, step S13~S14, between step S15~S16 it is no sequencing, that is, can be and first carry out step
Rapid S11~S12, it is rear to execute step S13~S14 and step S14~S15, it can also be and first carry out step S15~S16, it is rear to execute
Step S11~S12 and step S13~S14, can also be step S11~S12, step S13~S14, step S15~S16 this three
A direction is performed simultaneously.
Based on above-mentioned, step S11~S12 is the judging process that CoMP user is become to non-CoMP user, is used according to CoMP
Whether the RSRP of family serving cell is greater than threshold value to judge whether the CoMP user needs to retract for non-CoMP mode；Step
S13~S14 is the judging process that CoMP user is become to central user, that is, belongs to the process that CoMP user exits, if CoMP
The RSRP of serving cell is greater than predetermined threshold value where user, then the CoMP user is labeled as central user；And step S15~
S16 is the judging process that the non-CoMP user in edge customer is become to CoMP user, that is, belongs to the process of CoMP user addition,
The RSRP information of this cell and adjacent cell for being reported according to CoMP user, judges whether edge C oMP user needs to carry out CoMP association
If desired operation mode cooperates, former non-CoMP user is become CoMP user, and be added in CoMP user list.
The flow chart that CoMP user exits is as shown in fig. 7, steps are as follows:
The RSRP letter of step 101, the most strong adjacent cell of the RSRP for successively obtaining CoMP user serving cell and serving cell
Breath；
Step 102 judges whether the RSRP of CoMP UE serving cell is greater than the first threshold value RSRP_Th1 and CoMP
The RSRP difference of the RSRP of UE serving cell and most strong adjacent cell is greater than Delta_RSRP_Th1, if so, being transferred to step 103；
Otherwise it is transferred to step 101；
The UE is deleted from CoMP user list, and is transferred to step 104 by step 103；
Whether step 104, CoMP user are fully completed judgement, if so, terminating, are otherwise transferred to step 101.
The flow chart that CoMP user is added is as shown in figure 8, steps are as follows:
The most strong adjacent cell RSRP of step 201, the serving cell RSRP information for being successively read edge customer and serving cell
Information；
Step 202 judges whether user meets following condition: | RSRPservice-RSRPneighbor| < Delta_RSRP_
Th2, it is no to then follow the steps 201 if so then execute step 203；
Edge UE is identified as CoMP user by step 203, is recorded the cooperation cell of the CoMP user and is cooperated with this small
Cooperation frequency range can be used in area accordingly, is added into CoMP user list, and be transferred to step 204；
Whether step 204 completes all edge customer judgements, if so, being transferred to step 205, is otherwise transferred to step 201；
CoMP user list is sent to adjacent cell by step 205.
The frequency band occupied in CoMP user list comprising CoMP user ID and CoMP user, i.e. a CoMP user ID distribution
One frequency band.After cell receives CoMP user list, AOA judgement is carried out: in measurement adjacent cell CoMP user and this serving cell
The angle of arrival of heart user then prohibits the central user if there is central user is fallen into the arrival angular region of certain CoMP user
The frequency band shared by the CoMP user, i.e., so that the CoMP user of the central user and adjacent cell uses different frequency bands, to keep away
Exempt to interfere, improves CoMP user performance.
In conclusion, friendship cooperation cell between small using descending resource allocation method feedback quantity provided in this embodiment
Mutual information is small, is not necessarily to real-time, interactive scheduling related information, is compatible with to greatest extent in terms of feedback mechanism and X2 interface capacity
The current mechanism of LTE system, compatibility are improved, and are easy to implement.
Embodiment three
A kind of base station is provided in the present embodiment, composition schematic diagram is as shown in Figure 9, comprising: judgment module 10 and adjustment mould
Block 20；
Judgment module 10 be used for judge the central user of serving cell whether be located at the adjacent cell of serving cell collaboration it is more
In the arrival angular region of point CoMP user.The neighbour that adjustment module 20 is used to be located at when the central user of serving cell serving cell is small
When in the arrival angular region of the CoMP user in area, the frequency band that adjustment central user communication uses is used with CoMP in CoMP user list
The frequency band that family occupies does not repeat.
Wherein, CoMP user list is according to the RSRP of serving cell where user and the most strong adjacent cell of serving cell
RSRP obtain, in CoMP user list comprising CoMP user mark ID and CoMP user ID occupy frequency band.User includes
Central user and edge customer, edge customer include CoMP user and non-CoMP user.
Central user is compared with the angle of arrival of adjacent cell CoMP user using above-mentioned base station, according to comparison result pair
The communication band of CoMP user is selected, and is made it avoid conflicting with the generation of the communication band of central user, is reduced interference, improve
CoMP user performance.
It further include arranging CoMP user in base station provided in this embodiment in addition to above-mentioned judgment module 10 and adjustment module 20
The list update module 30 that table is updated, the list update module 30 further comprise the first removing module 31, second delete
Except module 32 and adding module 33.
First removing module 31 is used to CoMP user becoming non-CoMP user, specifically includes:
First acquisition unit 311, for the RSRP of serving cell where obtaining CoMP user and the most strong neighbour of serving cell
The RSRP of cell.
First judging unit 312, for clothes where the RSRP and CoMP user according to serving cell where CoMP user
The difference of the RSRP of the most strong adjacent cell of the RSRP and serving cell for cell of being engaged in is judged, if clothes where meeting CoMP user
The RSRP for cell of being engaged in is greater than the first threshold value, and the most strong neighbour of the RSRP of serving cell where CoMP user and serving cell simultaneously
The difference of the RSRP of cell is greater than the second threshold value, then CoMP user is labeled as non-CoMP user, and by CoMP user from pre-
It is deleted in the CoMP user list first stored and obtains CoMP user list.Wherein, most strong adjacent cell refers to the multiple of serving cell
The strongest adjacent cell of RSRP is received in adjacent cell.
Second removing module 32 is used to CoMP user becoming central user, specifically includes:
Second acquisition unit 321, the RSRP for serving cell where obtaining CoMP user.
Whether second judgment unit 322, the RSRP for serving cell where judging CoMP user are greater than third threshold value,
If the RSRP of serving cell is greater than third threshold value where CoMP user, CoMP user is labeled as central user, and will
CoMP user deletes from pre-stored CoMP user list and obtains CoMP user list.
Adding module 33 is used to the non-CoMP user in edge customer becoming CoMP user, specifically includes:
Third acquiring unit 331, RSRP and serving cell for serving cell where obtaining non-CoMP user are most
The RSRP of strong adjacent cell.
Third judging unit 332, for the most strong neighbour to the RSRP of serving cell where non-CoMP user and serving cell
The difference of the RSRP of cell is judged, if the most strong neighbour of the RSRP of serving cell where non-CoMP user and serving cell is small
Non- CoMP user is then labeled as CoMP user, non-CoMP user is added to by the difference of the RSRP in area less than the 4th threshold value
Obtain CoMP user list in pre-stored CoMP user list, at the same recording mark be CoMP user cooperation cell and
Available cooperation frequency range accordingly.
CoMP user list is deleted and is added by list update module, so as to according to the RSRP of serving cell with
And the RSRP information of the most strong adjacent cell of serving cell is in real time updated CoMP user list, and according to updated CoMP
User list judges the relationship of central user and adjacent cell CoMP user angle of arrival, avoids CoMP user from occupying center and uses
Frequency band used in family is communicated, and avoids interfering, and improves CoMP user performance.
Example IV
The present embodiment additionally provides a kind of base station, and composition schematic diagram is as shown in Figure 10, comprising: CoMP user judging module
100 and frequency band Coordination module 200.
CoMP user judging module 100 is used for the most strong neighbour of RSRP and serving cell according to serving cell where user
What the RSRP of cell was obtained, CoMP user list is obtained, and updated CoMP user list is sent to frequency band and is coordinated
Module 200, the frequency band wherein occupied in CoMP user list comprising CoMP user mark ID and CoMP user ID.
Frequency band Coordination module 200 is used for the CoMP user of the adjacent cell of the central user and serving cell according to serving cell
The frequency band that the relationship of angle of arrival determines that can central user use CoMP user ID to occupy is communicated.
CoMP user judging module 100 includes two parts, and a part is the judging process that CoMP user becomes central user,
Judge whether the CoMP user needs to retract to be non-according to whether the RSRP of CoMP user serving cell is greater than the first threshold value
CoMP mode marks the user as central user if the RSRP of user is greater than three limit value of the family status；Another part is edge use
Non- CoMP user in family becomes the judging process of CoMP user, is believed according to this cell of reporting of user with most strong adjacent cell RSRP
Breath, judges whether the non-CoMP user needs to carry out CoMP collaboration mode, if desired cooperates, add the user to CoMP user
In list.
Optionally, CoMP user judging module 100 includes the first removing module 110, for being used according to collaboration multiple spot CoMP
The RSRP of the most strong adjacent cell of the RSRP and serving cell of serving cell where family judges whether CoMP user from CoMP user
It is deleted in list, comprising:
First acquisition unit 111, for the RSRP of serving cell where obtaining CoMP user and the most strong neighbour of serving cell
The RSRP of cell.
First judging unit 112, for clothes where the RSRP and CoMP user according to serving cell where CoMP user
The difference of the RSRP of the most strong adjacent cell of the RSRP and serving cell for cell of being engaged in is judged, if clothes where meeting CoMP user
The RSRP for cell of being engaged in is greater than the first threshold value, and the most strong neighbour of the RSRP of serving cell where CoMP user and serving cell simultaneously
The difference of the RSRP of cell is greater than the second threshold value, then deletes CoMP user from CoMP user list.It is wherein most strong adjacent small
Area is the strongest adjacent cell of RSRP that receives in multiple adjacent cells of serving cell.
Optionally, CoMP user judging module 100 further includes the second removing module 120, for according to collaboration multiple spot CoMP
The RSRP of serving cell judges whether to become CoMP user into central user and delete from CoMP user list where user, wraps
It includes:
Second acquisition unit 121, the RSRP for serving cell where obtaining CoMP user.
Whether second judgment unit 122, the RSRP for serving cell where judging CoMP user are greater than third threshold value,
If the RSRP of serving cell where CoMP user is greater than third threshold value, by CoMP user labeled as central user, and from
It is deleted in CoMP user list.
Optionally, it further includes adding module 130 that CoMP user, which adjudicates 100 pieces of mould, for servicing according to where CoMP user
The RSRP of cell judges whether for non-CoMP user to be added in CoMP user list, comprising:
Third acquiring unit 131, RSRP and serving cell for serving cell where obtaining non-CoMP user are most
The RSRP of strong adjacent cell.
Third judging unit 132, for the most strong neighbour to the RSRP of serving cell where non-CoMP user and serving cell
The difference of the RSRP of cell is judged, if the most strong neighbour of the RSRP of serving cell where non-CoMP user and serving cell is small
Non- CoMP user is then labeled as CoMP user, non-CoMP user is added to by the difference of the RSRP in area less than the 4th threshold value
In CoMP user list, while recording the cooperation cell of CoMP user and cooperation frequency range can be used accordingly.
Frequency band Coordination module 200 mainly determines needs according to the AOA information of the CoMP user list of adjacent cell and user
The central user and evacuation frequency band of evacuation, to reduce interference suffered by CoMP user.Optionally, frequency band Coordination module 200
After receiving CoMP user list, according to arriving for the CoMP user of the central user of serving cell and the adjacent cell of serving cell
Up to angle relationship determine central user can use the CoMP user ID occupy frequency band be communicated before, be also used to:
The CoMP user list of serving cell is sent to cooperation cell, while the adjacent cell for receiving this serving cell is sent
The CoMP user list come.
It is last defeated comprising exiting the module being added with CoMP user for CoMP user in CoMP user judging module 100
CoMP user list out, AOA information of the frequency band Coordination module 200 mainly according to the CoMP user list of adjacent cell and user are true
The central user that needs to avoid calmly and evacuation frequency band, to reduce interference suffered by CoMP user, can in feedback mechanism and
Maximum compatible LTE current mechanism, improves the compatibility of system, easily facilitates realization in terms of X2 interface capacity.
The above embodiments are only used to illustrate the present invention, and not limitation of the present invention, in relation to the common of technical field
Technical staff can also make a variety of changes and modification without departing from the spirit and scope of the present invention, therefore all
Equivalent technical solution also belongs to scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (10)
1. a kind of descending resource allocation method characterized by comprising
Judge whether the central user of serving cell is located at arriving for the collaboration multiple spot CoMP user of the adjacent cell of the serving cell
Up in angular region, if the central user of the serving cell is located at the arrival of the CoMP user of the adjacent cell of the serving cell
In angular region, then the frequency band of CoMP user occupancy in the frequency band and CoMP user list that the central user communication uses is adjusted not
It repeats；
Wherein, the CoMP user list is the most strong neighbour of the RSRP and the serving cell according to serving cell where user
What the RSRP of cell was obtained, the frequency occupied in the CoMP user list comprising the CoMP user mark ID and CoMP user ID
Band；
The user includes central user and edge customer, and the edge customer includes CoMP user and non-CoMP user.
2. the method according to claim 1, wherein judging whether the central user of serving cell is located at the clothes
Before step in the arrival angular region of the collaboration multiple spot CoMP user of the adjacent cell for cell of being engaged in, the method also includes:
The RSRP of the most strong adjacent cell of the RSRP and serving cell of serving cell where obtaining the CoMP user；
According to the RSRP and clothes of serving cell where the RSRP of serving cell where the CoMP user and the CoMP user
The difference of the RSRP of the most strong adjacent cell for cell of being engaged in is judged, if the RSRP of serving cell where meeting the CoMP user
Greater than the first threshold value, and the most strong adjacent cell of the RSRP and serving cell of serving cell where the CoMP user simultaneously
The difference of RSRP be greater than the second threshold value, then by the CoMP user be labeled as non-CoMP user, and by the CoMP user from
It is deleted in pre-stored CoMP user list and obtains the CoMP user list；
Wherein, the most strong adjacent cell, which refers in multiple adjacent cells of serving cell, receives the strongest adjacent cell of RSRP.
3. the method according to claim 1, wherein judging whether the central user of serving cell is located at the clothes
Before step in the arrival angular region of the collaboration multiple spot CoMP user of the adjacent cell for cell of being engaged in, the method also includes:
The RSRP of serving cell where obtaining the CoMP user；
Whether the RSRP of serving cell is greater than third threshold value where judging the CoMP user, if where the CoMP user
The RSRP of serving cell is greater than third threshold value, then the CoMP user is labeled as central user, and by the CoMP user
It is deleted from pre-stored CoMP user list and obtains the CoMP user list.
4. the method according to claim 1, wherein judging whether the central user of serving cell is located at the clothes
Before step in the arrival angular region of the collaboration multiple spot CoMP user of the adjacent cell for cell of being engaged in, the method also includes:
The RSRP of the most strong adjacent cell of the RSRP and serving cell of serving cell where obtaining the non-CoMP user；
To the difference of the RSRP of the most strong adjacent cell of the RSRP and serving cell of serving cell where the non-CoMP user
Judged, if the RSRP of the most strong adjacent cell of the RSRP and serving cell of serving cell where the non-CoMP user
Difference less than the 4th threshold value, then by the non-CoMP user be labeled as CoMP user, the non-CoMP user is added to
The CoMP user list is obtained in pre-stored CoMP user list, while recording mark is the cooperation cell of CoMP user
And cooperation frequency range can be used accordingly.
5. described the method according to claim 1, wherein after the step of obtaining the CoMP user list
Judge whether the central user of the serving cell is located at the arrival angular region of the CoMP user of the adjacent cell of the serving cell
Before interior step, the method also includes:
The adjacent cell that the CoMP user list of serving cell is sent to cooperation cell, while receiving this serving cell is sent
CoMP user list.
6. a kind of base station characterized by comprising
Judgment module and adjustment module；
The judgment module is for judging whether the central user of serving cell is located at the collaboration of the adjacent cell of the serving cell
In the arrival angular region of multiple spot CoMP user；
The CoMP that the adjustment module is used to be located at when the central user of the serving cell adjacent cell of the serving cell is used
When in the arrival angular region at family, adjusts CoMP user in the frequency band and CoMP user list that the central user communication uses and occupy
Frequency band do not repeat；
Wherein, the CoMP user list is the most strong neighbour of the RSRP and the serving cell according to serving cell where user
What the RSRP of cell was obtained, the frequency occupied in the CoMP user list comprising the CoMP user mark ID and CoMP user ID
Band；
The user includes central user and edge customer, and the edge customer includes CoMP user and non-CoMP user.
7. base station according to claim 6, which is characterized in that the base station further includes the first removing module, comprising:
First acquisition unit, for the RSRP of serving cell where obtaining the CoMP user and the most strong neighbour of the serving cell
The RSRP of cell；
First judging unit, for according to clothes where the RSRP of serving cell where the CoMP user and the CoMP user
The difference of the RSRP of the most strong adjacent cell of the RSRP and serving cell for cell of being engaged in is judged, if meeting the CoMP user institute
It is greater than the first threshold value in the RSRP of serving cell, and the RSRP and serving cell of serving cell where the CoMP user simultaneously
Most strong adjacent cell RSRP difference be greater than the second threshold value, then by the CoMP user be labeled as non-CoMP user, and will
The CoMP user deletes from pre-stored CoMP user list and obtains the CoMP user list；
Wherein, the most strong adjacent cell, which refers in multiple adjacent cells of serving cell, receives the strongest adjacent cell of RSRP.
8. base station according to claim 6, which is characterized in that the base station further includes the second removing module, comprising:
Second acquisition unit, the RSRP for serving cell where obtaining the CoMP user；
Whether second judgment unit, the RSRP for serving cell where judging the CoMP user are greater than third threshold value, such as
The RSRP of serving cell is greater than third threshold value where CoMP user described in fruit, then will use centered on CoMP user label
Family, and the CoMP user is deleted from pre-stored CoMP user list and obtains the CoMP user list.
9. base station according to claim 6, which is characterized in that the base station further includes adding module, for according to CoMP
The RSRP of serving cell judges whether to be added to non-CoMP user in the CoMP user list where user, comprising:
Third acquiring unit, RSRP and the serving cell for obtaining the non-CoMP user place serving cell are most
The RSRP of strong adjacent cell；
Third judging unit, for the most strong neighbour to the RSRP of serving cell where the non-CoMP user and the serving cell
The difference of the RSRP of cell is judged, if the RSRP of serving cell where the non-CoMP user and the serving cell
The non-CoMP user is then labeled as CoMP user, described in less than the 4th threshold value by the difference of the RSRP of most strong adjacent cell
Non- CoMP user, which is added in pre-stored CoMP user list, obtains the CoMP user list, while recording mark is
The cooperation cell of CoMP user and accordingly available cooperation frequency range.
10. base station according to claim 6, which is characterized in that the base station further includes sending/receiving module, is used for:
The adjacent cell that the CoMP user list of serving cell is sent to cooperation cell, while receiving this serving cell is sent
CoMP user list.
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|---|---|---|---|---|
| CN1980464A (en) * | 2005-12-06 | 2007-06-13 | 大唐移动通信设备有限公司 | Wireless resource distribution method and apparatus |
| KR20130018051A (en) * | 2011-08-12 | 2013-02-20 | 주식회사 팬택 | Apparatus and method for controling uplink transmission power in wireless communication system |
| CN103095355A (en) * | 2011-11-01 | 2013-05-08 | 中兴通讯股份有限公司 | Method and device for resource block grouping beam forming |
| WO2013141544A1 (en) * | 2012-03-18 | 2013-09-26 | Lg Electronics Inc. | Method and apparatus for performing measurement in wireless communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1980464A (en) * | 2005-12-06 | 2007-06-13 | 大唐移动通信设备有限公司 | Wireless resource distribution method and apparatus |
| KR20130018051A (en) * | 2011-08-12 | 2013-02-20 | 주식회사 팬택 | Apparatus and method for controling uplink transmission power in wireless communication system |
| CN103095355A (en) * | 2011-11-01 | 2013-05-08 | 中兴通讯股份有限公司 | Method and device for resource block grouping beam forming |
| WO2013141544A1 (en) * | 2012-03-18 | 2013-09-26 | Lg Electronics Inc. | Method and apparatus for performing measurement in wireless communication system |
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