CN101686512A - Method and device for selecting destination neighbor cell - Google Patents
Method and device for selecting destination neighbor cell Download PDFInfo
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- CN101686512A CN101686512A CN200810222945A CN200810222945A CN101686512A CN 101686512 A CN101686512 A CN 101686512A CN 200810222945 A CN200810222945 A CN 200810222945A CN 200810222945 A CN200810222945 A CN 200810222945A CN 101686512 A CN101686512 A CN 101686512A
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Abstract
The invention discloses a method for selecting a destination neighbor cell, and the method comprises the following steps: generating load information of a serving cell; selecting the destination neighbor cell according to the switching frequency between the serving cell and the neighbor cell; and sending the load information to the destination neighbor cell. The invention also discloses a device for selecting the destination neighbor cell, comprising a load information generation unit, the destination neighbor cell selective unit and a load information sending unit. In the invention, the destination neighbor cell is selected according to the switching frequency between the serving cell and the neighbor cell, and load information of the serving cell is sent to the destination neighbor cell,thereby effectively reducing times of sending signaling, lowering X2 interface load and reducing unnecessary systematic processing procedure.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of method and apparatus of selecting destination neighbor cell.
Background technology
In LTE (Long Term Evolution, Long Term Evolution) system, adopt the resource of quadrature to send data in the sub-district between the user, there is not interference, under the situation of identical networking, presence of intercell interference becomes main interference.In order to reduce presence of intercell interference, general now ICIC (Inter-Cell Interference Coordination, the Inter-Cell Interference Coordination) mechanism that adopts.ICIC mechanism is by the coordination of minizone the available resources of a sub-district to be carried out certain restriction, to improve SIR (the Signal-to-Interference Ratio of adjacent sub-district on these resources, signal interference ratio), the data rate and the covering of cell edge, described resource comprises time domain and frequency domain resource and transmitting power.ICIC mechanism need be at X2 interface interacting load information (LoadInformation), the resource that adjacent sub-district has utilized is avoided after receiving the load information that adjacent sub-district sends in the base station as far as possible, thereby reach the purpose that reduces to disturb, present agreement is supported in all adjacent minizone interacting load informations.Wherein a kind of method that realizes Inter-Cell Interference Coordination may further comprise the steps as shown in Figure 1:
Step s101, the base station generates the load information of Serving cell.
Step s102 sends load information to all adjacent sub-districts.
Step s103 after load information is received in adjacent sub-district, reduces the distribution priority of the Resource Block of the high interference of indicating.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art: carry out in the process of Inter-Cell Interference Coordination in the LTE system, need the minizone to transmit the load information of sub-district mutually by X2 interface.If the load information that this sub-district is generated sends to the sub-district in all adjacent cell lists, very big signaling consumption will be caused, and the interference that cause this sub-district some sub-districts in the adjacent cell list is very little, there is no need to carry out load information interaction.
Summary of the invention
The problem that the embodiment of the invention will solve provides a kind of method and apparatus of selecting destination neighbor cell, causes the big defective of signaling consumption to overcome in the prior art owing to the load information with Serving cell sends to all adjacent sub-districts.
For achieving the above object, the technical scheme of the embodiment of the invention provides a kind of method of selecting destination neighbor cell, said method comprising the steps of: the load information that generates Serving cell; Select destination neighbor cell according to the switching frequency between described Serving cell and the adjacent sub-district; Send described load information to described destination neighbor cell.
Wherein, after the load information of described generation Serving cell, also comprise: judge between described Serving cell and the adjacent sub-district whether switch, if then carry out the selection of destination neighbor cell; Otherwise send described load information according to initial configuration.
Wherein, described step according to initial configuration transmission load information specifically comprises: all send described load information or do not send described load information to all adjacent sub-districts to all adjacent sub-districts.
Wherein, described step according to the selection of the switching frequency between Serving cell and adjacent sub-district destination neighbor cell, specifically comprise: the size according to described switching frequency sorts to adjacent sub-district; According to the number N of predefined destination neighbor cell, selecting in the described ordering the adjacent sub-district of top n switching frequency correspondence from big to small is destination neighbor cell.
Wherein, the described step of selecting destination neighbor cell according to the switching frequency between Serving cell and the adjacent sub-district, specifically comprise: whether judge described switching frequency greater than predefined switching frequency thresholding, if the adjacent sub-district of then selecting described switching frequency correspondence is a destination neighbor cell.
Wherein, described switching frequency is that the incision between described Serving cell and the adjacent sub-district cuts out frequency, described incision cut out frequency be in the unit interval incision between described Serving cell and the adjacent sub-district and cut out number of times and, or the incision number of times between described Serving cell and the adjacent sub-district in the unit interval, or cut out number of times between described Serving cell and the adjacent sub-district in the unit interval.
Wherein, described load information comprises: the existing for the previous period running time-frequency resource of Serving cell utilizes the running time-frequency resource of following a period of time of Serving cell of information, up received power or interfere information, down transmitting power information, prediction to utilize information and down transmitting power information.
The technical scheme of the embodiment of the invention also provides a kind of device of selecting destination neighbor cell, and described device comprises: the load information generation unit is used to generate the load information of Serving cell; The destination neighbor cell selected cell is used for selecting destination neighbor cell according to the switching frequency between described Serving cell and the adjacent sub-district; The load information transmitting element is used for sending described load information to described destination neighbor cell.
Wherein, described device also comprises: the load information sending controling unit is used to judge between described Serving cell and the adjacent sub-district whether switch, if then carry out the selection of destination neighbor cell; Otherwise send described load information according to initial configuration.
Wherein, described initial configuration comprises: all send described load information or do not send described load information to all adjacent sub-districts to all adjacent sub-districts.
Wherein, described destination neighbor cell selected cell comprises: ordering subelement in sub-district is used for according to the size of described switching frequency being sorted in adjacent sub-district; The number storing sub-units is used to store the number N of predefined destination neighbor cell; The chooser unit, being used for selecting the adjacent sub-district of described ordering top n switching frequency correspondence from big to small is destination neighbor cell.
Wherein, described destination neighbor cell selected cell comprises: the thresholding storing sub-units is used to store predefined switching frequency thresholding; The chooser unit, being used to select the adjacent sub-district greater than the switching frequency correspondence of described switching frequency thresholding is destination neighbor cell.
Wherein, described switching frequency is that incision between described Serving cell and the adjacent sub-district cuts out frequency, cuts frequency or cuts out frequency.
Compared with prior art, technical scheme of the present invention has following advantage:
The embodiment of the invention is selected destination neighbor cell according to the switching frequency between Serving cell and the adjacent sub-district, and send the load information of Serving cell to destination neighbor cell, thereby can effectively reduce the number of times that sends signaling, reduce the X2 interface load, reduce unnecessary system handles process.
Description of drawings
Fig. 1 is a kind of flow chart of realizing the method for Inter-Cell Interference Coordination of prior art;
Fig. 2 is a kind of flow chart of realizing the method for Inter-Cell Interference Coordination of the embodiment of the invention;
Fig. 3 is the flow chart that the another kind of the embodiment of the invention is realized the method for Inter-Cell Interference Coordination;
Fig. 4 is the flow chart that the another kind of the embodiment of the invention is realized the method for Inter-Cell Interference Coordination;
Fig. 5 is a kind of structure chart of realizing the device of Inter-Cell Interference Coordination of the embodiment of the invention;
Fig. 6 is a kind of structure chart of destination neighbor cell selected cell among Fig. 5;
Fig. 7 is the another kind of structure chart of destination neighbor cell selected cell among Fig. 5.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
The method that the embodiment of the invention a kind of realizes Inter-Cell Interference Coordination may further comprise the steps as shown in Figure 2:
Step s201, generate the load information of Serving cell, described load information comprises: the existing for the previous period running time-frequency resource of Serving cell utilizes the running time-frequency resource of following a period of time of Serving cell of information, up received power or interfere information, down transmitting power information, prediction to utilize information and down transmitting power information.In the present embodiment, measurement according to the running time-frequency resource utilization, the measurement of up received power or interference, the statistics of down transmitting power is provided with load information, also can be according to the measurement of running time-frequency resource utilization, the statistics of user's active service speed, user's rate requirement, the running time-frequency resource quantity that the following a period of time inward flange user of load information prediction of the adjacent area that receives will utilize, position and the transmitting power that will use, load information is set according to predicting the outcome, for example predicted that following a period of time edge customer will take the time of which position, just can the time of corresponding these positions be expressed as 1, send to adjacent sub-district then with the form of bitmap (bitmap).
Step s202 judges between described Serving cell and the adjacent sub-district whether switch, if then change step s204; Otherwise change step s203.
Step s203 sends described load information according to initial configuration, and changes step s207.Initial configuration is for all to send described load information to all adjacent sub-districts described in the present embodiment.
Step s204 judges that the incision between described Serving cell and the adjacent sub-district cuts out frequency whether greater than predefined switching frequency thresholding, if then change step s205.Described incision cut out frequency be in the unit interval incision between described Serving cell and the adjacent sub-district and cut out number of times and.
Step s205, the adjacent sub-district of selecting described incision to cut out the frequency correspondence is a destination neighbor cell.
Step s206 sends described load information to described destination neighbor cell.
Step s207, the adjacent sub-district that receives described load information reduces the distribution priority of the Resource Block of the high interference of indicating in the described load information.Wherein, can judge by load information which is the Resource Block of high interference, for example load information can be represented by the form of bitmap (bitmap), each time is represented with 1bit, be designated as 1 time and represent that edge customer will use this time, may cause interference to the adjacent area, the edge customer of adjacent area does not just use these time as far as possible.
In the present embodiment, when Serving cell and adjacent sub-district under same base station and not in same base station following time, it is identical selecting the method for destination neighbor cell, but information interaction form and cycle may be identical or different, depend on realization.When Serving cell and adjacent sub-district in same base station following time, load information alternately can be more timely, for the sub-district under the different base station, because the restriction of inter-base station interface expense is restricted to the size and the cycle of signaling.
The method of the another kind realization Inter-Cell Interference Coordination of the embodiment of the invention may further comprise the steps as shown in Figure 3:
Step s301, the load information of generation Serving cell, described load information comprises.
Step s302 judges between described Serving cell and the adjacent sub-district whether switch, if then change step s304; Otherwise change step s303.
Step s303 does not send described load information to all adjacent sub-districts.
Step s304 judges that whether incision frequency between described Serving cell and the adjacent sub-district is greater than predefined switching frequency thresholding, if then change step s305.Described incision frequency is the incision number of times between interior described Serving cell of unit interval and the adjacent sub-district.
Step s305, the adjacent sub-district of selecting described incision frequency correspondence is a destination neighbor cell.
Step s306 sends described load information to described destination neighbor cell.
Step s307, described destination neighbor cell reduce the distribution priority of the Resource Block of the high interference of indicating in the described load information.
The method of the another kind realization Inter-Cell Interference Coordination of the embodiment of the invention may further comprise the steps as shown in Figure 4:
Step s401, the load information of generation Serving cell, described load information comprises.
Step s402 judges between described Serving cell and the adjacent sub-district whether switch, if then change step s404; Otherwise change step s403.
Step s403 sends described load information according to initial configuration, and changes step s407.Initial configuration is for all to send described load information to all adjacent sub-districts described in the present embodiment.
Step s404 sorts to adjacent sub-district according to the size that cuts out frequency between described Serving cell and the adjacent sub-district.The described frequency that cuts out is to cut out number of times between described Serving cell and the adjacent sub-district in the unit interval.
Step s405, according to the number N of predefined destination neighbor cell, the adjacent sub-district of selecting in the described ordering from big to small top n to cut out the frequency correspondence is a destination neighbor cell.
Step s406 sends described load information to described destination neighbor cell.
Step s407, the adjacent sub-district that receives described load information reduces the distribution priority of the Resource Block of the high interference of indicating in the described load information.
The device that the embodiment of the invention a kind of realizes Inter-Cell Interference Coordination as shown in Figure 5, described device comprises: load information generation unit 51, load information sending controling unit 52, destination neighbor cell selected cell 53 and load information transmitting element 54.Wherein load information transmitting element 54 is connected with load information generation unit 51, load information sending controling unit 52 and destination neighbor cell selected cell 53 respectively.
Load information generation unit 51 is used to generate the load information of Serving cell, and described load information comprises.Load information sending controling unit 52 is used to judge between described Serving cell and the adjacent sub-district whether switch, if then carry out the selection of destination neighbor cell; Otherwise send described load information according to initial configuration, described initial configuration comprises to all adjacent sub-districts and all sends described load information or do not send described load information to all adjacent sub-districts.Destination neighbor cell selected cell 53 is used for selecting destination neighbor cell according to the switching frequency between described Serving cell and the adjacent sub-district, and described switching frequency is that the incision between described Serving cell and the adjacent sub-district cuts out frequency, cuts frequency or cuts out frequency.Load information transmitting element 54 is used for sending described load information to described destination neighbor cell.
Destination neighbor cell selected cell 53 can have two kinds of structures, and a kind of structure wherein comprises sub-district ordering subelement 61, number storing sub-units 62 and chooser unit 63 as shown in Figure 6.Wherein chooser unit 63 is connected with number storing sub-units 62 with sub-district ordering subelement 61 respectively.Sub-district ordering subelement 61 is used for according to the size of switching frequency being sorted in adjacent sub-district; Number storing sub-units 62 is used to store the number N of predefined destination neighbor cell; It is destination neighbor cell that chooser unit 63 is used for selecting the adjacent sub-district of described ordering top n switching frequency correspondence from big to small.
The another kind of structure of destination neighbor cell selected cell 53 comprises thresholding storing sub-units 71 and chooser unit 72 as shown in Figure 7.Wherein thresholding storing sub-units 71 is connected with chooser unit 72.Thresholding storing sub-units 71 is used to store predefined switching frequency thresholding; It is destination neighbor cell that chooser unit 72 is used to select the adjacent sub-district greater than the switching frequency correspondence of switching frequency thresholding.
The embodiment of the invention is selected destination neighbor cell according to the switching frequency between Serving cell and the adjacent sub-district, and send the load information of Serving cell to destination neighbor cell, thereby can effectively reduce the number of times that sends signaling, reduce the X2 interface load, reduce unnecessary system handles process.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (13)
1, a kind of method of selecting destination neighbor cell is characterized in that, said method comprising the steps of:
Generate the load information of Serving cell;
Select destination neighbor cell according to the switching frequency between described Serving cell and the adjacent sub-district;
Send described load information to described destination neighbor cell.
2, select the method for destination neighbor cell according to claim 1, it is characterized in that, after the load information of described generation Serving cell, also comprise:
Judge between described Serving cell and the adjacent sub-district whether switch, if then carry out the selection of destination neighbor cell; Otherwise send described load information according to initial configuration.
3, as the method for selection destination neighbor cell as described in the claim 2, it is characterized in that, described step according to initial configuration transmission load information specifically comprises: all send described load information or do not send described load information to all adjacent sub-districts to all adjacent sub-districts.
4, select the method for destination neighbor cell according to claim 1, it is characterized in that, described step according to the selection of the switching frequency between Serving cell and adjacent sub-district destination neighbor cell specifically comprises:
Size according to described switching frequency sorts to adjacent sub-district;
According to the number N of predefined destination neighbor cell, selecting in the described ordering the adjacent sub-district of top n switching frequency correspondence from big to small is destination neighbor cell.
5, select the method for destination neighbor cell according to claim 1, it is characterized in that, described step according to the selection of the switching frequency between Serving cell and adjacent sub-district destination neighbor cell specifically comprises:
Whether judge described switching frequency greater than predefined switching frequency thresholding, if the adjacent sub-district of then selecting described switching frequency correspondence is a destination neighbor cell.
6, as the method for claim 1 to 5 selection destination neighbor cell as described in each, it is characterized in that, described switching frequency be in the unit interval incision between described Serving cell and the adjacent sub-district and cut out number of times and, or the incision number of times between described Serving cell and the adjacent sub-district in the unit interval, or cut out number of times between described Serving cell and the adjacent sub-district in the unit interval.
7, as the method for claim 1 to 5 selection destination neighbor cell as described in each, it is characterized in that described load information comprises: the existing for the previous period running time-frequency resource of Serving cell utilizes the running time-frequency resource of following a period of time of Serving cell of information, up received power or interfere information, down transmitting power information, prediction to utilize information and down transmitting power information.
8, a kind of device of selecting destination neighbor cell is characterized in that, described device comprises:
The load information generation unit is used to generate the load information of Serving cell;
The destination neighbor cell selected cell is used for selecting destination neighbor cell according to the switching frequency between described Serving cell and the adjacent sub-district;
The load information transmitting element is used for sending described load information to described destination neighbor cell.
9, as the device of selection destination neighbor cell as described in the claim 8, it is characterized in that described device also comprises: the load information sending controling unit is used to judge between described Serving cell and the adjacent sub-district whether switch, if then carry out the selection of destination neighbor cell; Otherwise send described load information according to initial configuration.
10, as the device of selection destination neighbor cell as described in the claim 9, it is characterized in that described initial configuration comprises: all send described load information or do not send described load information to all adjacent sub-districts to all adjacent sub-districts.
11, as the device of selection destination neighbor cell as described in the claim 8, it is characterized in that described destination neighbor cell selected cell comprises:
Ordering subelement in sub-district is used for according to the size of described switching frequency being sorted in adjacent sub-district;
The number storing sub-units is used to store the number N of predefined destination neighbor cell;
The chooser unit, being used for selecting the adjacent sub-district of described ordering top n switching frequency correspondence from big to small is destination neighbor cell.
12, as the device of selection destination neighbor cell as described in the claim 8, it is characterized in that described destination neighbor cell selected cell comprises:
The thresholding storing sub-units is used to store predefined switching frequency thresholding;
The chooser unit, being used to select the adjacent sub-district greater than the switching frequency correspondence of described switching frequency thresholding is destination neighbor cell.
13, as the device of selection destination neighbor cell as described in the claim 8, it is characterized in that described switching frequency is that the incision between described Serving cell and the adjacent sub-district cuts out frequency, cuts frequency or cuts out frequency.
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| CN200810222945A CN101686512A (en) | 2008-09-23 | 2008-09-23 | Method and device for selecting destination neighbor cell |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103813347A (en) * | 2014-02-28 | 2014-05-21 | 电信科学技术研究院 | Base station frequency resource allocation method and network device |
| CN104185234A (en) * | 2013-05-23 | 2014-12-03 | ***通信集团公司 | Data information transmission and adjacent district switching method, device and system |
| CN111641977A (en) * | 2019-03-01 | 2020-09-08 | 电信科学技术研究院有限公司 | Cell switching processing method, device and equipment |
-
2008
- 2008-09-23 CN CN200810222945A patent/CN101686512A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104185234A (en) * | 2013-05-23 | 2014-12-03 | ***通信集团公司 | Data information transmission and adjacent district switching method, device and system |
| CN104185234B (en) * | 2013-05-23 | 2018-05-11 | ***通信集团公司 | A kind of data information transfer, the method, apparatus and system of adjacent cell switching |
| CN103813347A (en) * | 2014-02-28 | 2014-05-21 | 电信科学技术研究院 | Base station frequency resource allocation method and network device |
| CN103813347B (en) * | 2014-02-28 | 2018-01-26 | 电信科学技术研究院 | A kind of base station frequency resource allocation method and the network equipment |
| US9992784B2 (en) | 2014-02-28 | 2018-06-05 | China Academy Of Telecommunications Technology | Base station frequency resource allocation method and network device |
| CN111641977A (en) * | 2019-03-01 | 2020-09-08 | 电信科学技术研究院有限公司 | Cell switching processing method, device and equipment |
| CN111641977B (en) * | 2019-03-01 | 2022-01-07 | 大唐移动通信设备有限公司 | Cell switching processing method, device and equipment |
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