CN102905376B - Resource regulating method, base station and communication system - Google Patents
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Abstract
The invention provides resource regulating method, base station and communication system.Resource regulating method of the present invention comprises: the SNPL that the first terminal of the first covered community reports by the first base station compares with the first threshold value preset, and wherein the second community is by the second adjacent base station coverage; If the SNPL that the first terminal of the first community reports is less than described first threshold value, then described first base station detects in described second community whether there is the second terminal interference of described first terminal being greater than to the second default threshold value; If there is described second terminal, then described first base station sends the interference notice carrying described second end message to described second base station; Described first base station is mutually asynchronous with the scheduling of described second base station to described second terminal determined according to described second end message to the scheduling of described first terminal.Resource regulating method of the present invention, base station and communication system effectively can improve the throughput of Cell Edge User.
Description
Technical field
The present invention relates to field of wireless communication, particularly relate to resource regulating method, base station and communication system.
Background technology
But along with the fast development of wireless and mobile communication in recent years, the required communication rate of people to radio communication is also more and more higher.High Speed Uplink Packet access (HSUPA) network is by adopting multi-code transmission, HARQ, the key technology such as fast dispatch based on base station (Node B), make single community maximal uplink throughput reach 5.76Mbit/s, greatly strengthen data service bearing capacity and the availability of frequency spectrum of WCDMA up link.
HSUPA network is widely used because of its above-mentioned advantage.But in the network of HSUPA identical networking, Cell Edge User can be subject to the interference of neighbor cell user usually, and the existence due to this presence of intercell interference makes the throughput degradation of Cell Edge User.Therefore, the throughput how improving Cell Edge User has become a very important problem.
Summary of the invention
The invention provides a kind of resource regulating method, base station and communication system, to realize the throughput effectively improving Cell Edge User.
According to an aspect of the present invention, a kind of resource regulating method is provided, comprises:
The path loss SNPL of described first community that the first terminal of the first covered community reports by the first base station and the second adjacent community compares with the first threshold value preset, and wherein said second community is by the second adjacent base station coverage;
If the SNPL that the first terminal of described first community reports is less than described first threshold value, then described first base station detects in described second community whether there is the second terminal interference of described first terminal being greater than to the second default threshold value;
If there is described second terminal, then described first base station sends the interference notice carrying described second end message to described second base station;
Described first base station is mutually asynchronous with the scheduling of described second base station to described second terminal determined according to described second end message to the scheduling of described first terminal.
According to a further aspect in the invention, a kind of base station is also provided, comprises:
First processing module, the path loss SNPL for described first community that reported by the first terminal of the first covered community and the second adjacent community compares with the first threshold value preset, and wherein said second community is by the second adjacent base station coverage;
Second processing module, if be less than described first threshold value for the SNPL of the terminal to report of described first community, then detects the second terminal whether existing in described second community and the interference of described first terminal is greater than to the second default threshold value;
3rd processing module, if for there is described second terminal, then sends the interference notice carrying described second end message to described second base station;
4th processing module, mutually asynchronous with the scheduling of described second base station to described second terminal determined according to described second end message for making the scheduling of described first terminal.
In accordance with a further aspect of the present invention, also provide a kind of communication system, comprise base station provided by the invention and the terminal being positioned at base station range.
According to resource regulating method of the present invention, base station and communication system, because the first base station is being determined according to the SNPL of terminal to report to judge whether the community that adjacent second base station covers exists strong jamming to this terminal further after terminal is positioned at cell edge, if exist, notify the second base station, match with the first base station to make the second base station, to stagger scheduling occasion to there is strongly disturbing terminal, to reduce interference between the two, thus avoid Cell Edge User because being subject to the interference of neighbor cell and the low defect of the throughput caused, improve the throughput of HSUPA network small area edge customer.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of resource regulating method of the present invention.
Fig. 2 is the simulation results of an embodiment.
Fig. 3 is the simulation results of another embodiment.
Fig. 4 is the structural representation of base station of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the schematic flow sheet of resource regulating method of the present invention.As shown in Figure 1, this method for scheduling resources among cells comprises the following steps:
Step S101, the path loss SNPL of described first community that the first terminal of the first covered community reports by the first base station and the second adjacent community compares with the first threshold value preset, and wherein said second community is by the second adjacent base station coverage;
Step S102, if the SNPL that the first terminal of described first community reports is less than described first threshold value, then described first base station detects in described second community whether there is the second terminal interference of described first terminal being greater than to the second default threshold value;
Step S103, if there is described second terminal, then described first base station sends the interference notice carrying described second end message to described second base station;
Step S104, described first base station is mutually asynchronous with the scheduling of described second base station to described second terminal to the scheduling of described first terminal.
Particularly, the first terminal of the first community that the first base station covers to it sends SNPL metrical information, first terminal is measured with the working frequency points of this first terminal with adjacent cell (i.e. the second community frequently according to SNPL metrical information, this second community covered by the second base station) path loss, according to this path loss calculation SNPL, and calculated SNPL is sent to the first base station.
First base station is preset with first threshold value (SNPL_thrd), according to SNPL_thrd, first base station judges whether first terminal is positioned at cell edge, more specifically, if the SNPL that first terminal returns is more than or equal to SNPL_thrd, then base station knows that first terminal is not positioned at the first cell edge, now process ends; If the SNPL that first terminal returns is less than SNPL_thrd, then base station knows that first terminal is positioned at the first cell edge, then detect the second community further and whether there is stronger interference to the first community.
Wherein, each terminal to be detected in the second community that adjacent second base station covers to the interference value of first terminal by interference detection method (such as multi-cell joint detection method) between arbitrary cells of the prior art in first base station, and by this interference value compared with default second threshold value, more specifically, if interference value is less than the second threshold value, then the first base station thinks that this interference is weak jamming; If interference value is greater than the second threshold value, then the first base station thinks that this interference is strong jamming.If after relatively, all terminals of the second community are all less than the second threshold value to the interference value of first terminal, then process ends; If the interference value of the second terminal to first terminal of the second community is greater than the second threshold value, the first base station knows that the second terminal of the second community exists strong jamming to first terminal, then the first base station sends the interference notice carrying the second end message to the second base station.Wherein, the second end message is used for making the second base station determine the second terminal according to this information, and this second end message is such as positional information, the source code or bit number etc. of the second terminal that the first base station detects.
After second base station receives this interference notice, the second terminal positional information entrained by this interference notice knows that the second terminal in the second community exists strong jamming to the first terminal in the first community, therefore, second base station and the first base station cooperatively interact, with the scheduling occasion staggered to the second terminal and first terminal, thus reduce interference between the two.
According to the resource regulating method of above-described embodiment, because the first base station is being determined according to the SNPL of terminal to report to judge whether the community that adjacent second base station covers exists strong jamming to this terminal further after terminal is positioned at cell edge, if exist, notify the second base station, match with the first base station to make the second base station, to stagger scheduling occasion to there is strongly disturbing terminal, to reduce interference between the two, thus avoid Cell Edge User because being subject to the interference of neighbor cell and the low defect of the throughput caused, improve the throughput of HSUPA network small area edge customer.
Further, in the resource regulating method of above-described embodiment, also comprise:
The transmitting power mandate of described first terminal is improved in described first base station.
According to the resource regulating method of above-described embodiment, the first base station also improves the throughput of first terminal further by the transmitting power mandate improving first terminal.Maximize to realize speed, the transmitting power mandate of first terminal can be adjusted to the maximum transmission power that first terminal is supported by base station.
Further, in the resource regulating method of above-described embodiment, described first base station sends the interference notice carrying described second end message to described second base station, described first base station comprises the step that the scheduling of described first terminal is mutually asynchronous with the scheduling of described second base station to described second terminal:
Described first base station generate incoherent first scheduling time sequence and second scheduling time sequence;
Described first base station to described second base station send carry described second end message and described second scheduling time sequence interference notice;
Described first base station first terminal according to described first scheduling time sequence pair is dispatched; Described second base station second terminal according to described second scheduling time sequence pair is dispatched.
Particularly, the first base station by certain measurement (such as measuring channel angle of arrival) and certain rule (such as odd-numbered frame is dispatched, even frame do not dispatch) generate first scheduling time sequence and second scheduling time sequence.Generated first scheduling time sequence such as " 01010101 ... ", second scheduling time sequence be such as " 10101010 ... ", wherein, " 0 " represents does not dispatch, " 1 " represents dispatches, can find out, all scheduling occasions in the first scheduling time sequence are all different from all scheduling occasions in the second scheduling time sequence.First base station by second scheduling time sequence be carried at interference notice in be sent to the second base station.After second base station receives interference notice, obtain strongly disturbing second end message caused to the first community from this interference notice, thus determine the second terminal, and according to second scheduling time sequence pair second terminal dispatch.
Adopt the resource regulating method of above-described embodiment to carry out emulation testing to HSUPA network, Fig. 2 is the simulation results of an embodiment.As shown in Figure 2, when not using the resource regulating method of above-described embodiment, the throughput of edge customer is on average about 70kbps; After using the resource regulating method of above-described embodiment, the throughput of edge customer is brought up to and is on average about 168kbps, and gain reaches 140%.
According to the resource regulating method of above-described embodiment, to there is the scheduling occasion of strongly disturbing terminal completely staggered for being positioned at cell edge can to make the first base station and the second base station, reduction interference that can be fabulous, thus effectively improve the throughput of edge customer.
Further, in the resource regulating method of above-described embodiment, described first base station comprises the step that the scheduling of described first terminal is mutually asynchronous with the scheduling of described second base station to described second terminal:
Described first base station is carried out before scheduling to described first terminal and described second base station all generates random number to before described second terminal scheduling, and if only if operation dispatching when described random number is less than the 3rd predetermined separately threshold value and the 4th threshold value.
Particularly, be preset with the 3rd threshold value in the first base station, be preset with the 4th threshold value in the second base station, the 3rd threshold value and the 4th threshold value can be any number.First base station, when dispatching first terminal, generates a random number, if this random number is less than the 3rd threshold value, dispatches first terminal; If this random number is more than or equal to the 3rd threshold value, first terminal is not dispatched.Similarly, the second base station, when dispatching the second terminal, generates a random number, if this random number is less than the 4th threshold value, dispatches the second terminal; If this random number is more than or equal to the 4th threshold value, the second terminal is not dispatched.
Adopt the resource regulating method of above-described embodiment to carry out emulation testing to HSUPA network, Fig. 3 is the simulation results of another embodiment.As shown in Figure 3, when not using the resource regulating method of above-described embodiment, the throughput of edge customer is on average about 89kbps; After using the resource regulating method of above-described embodiment, the throughput of edge customer is brought up to and is on average about 121kbps, and gain reaches 35.96%.
According to the resource regulating method of above-described embodiment, difference scheduling is carried out according to certain random chance to there are strongly disturbing two terminals by making the first base station and the second base station, significantly reduce the probability that two terminals are dispatched simultaneously very quickly and easily, thus reduce interference, effectively improve handling up heavily of edge customer.
Further, in the resource regulating method of above-described embodiment, described first base station to after described second base station sends the step of the interference notice carrying described second end message, described first base station also comprises before the step that the scheduling of described first terminal is mutually asynchronous with the scheduling of described second base station to described second terminal determined according to described second end message:
The SNPL of described second terminal to report and the 5th threshold value preset compare by described second base station; If the SNPL of described second terminal to report is greater than described 5th threshold value, then process ends; If the SNPL of described second terminal to report is less than or equal to described 5th threshold value, then perform described first base station to the scheduling of the described first terminal step mutually asynchronous with the scheduling of described second base station to described second terminal determined according to described second end message.
Wherein, the second base station can be used in the identical method in the first base station and judges whether the second terminal is positioned at the edge of the second community.Due under normal conditions, the terminal being only positioned at cell edge can cause strong jamming to adjacent cell, that is: the second base station is after the first base station detects that the second terminal exists strongly disturbing notice for first terminal, by whether being positioned at cell edge to judge the accuracy of the first base station testing result to the second terminal.Particularly, if the second base station detects that the second terminal is positioned at cell edge, then confirm that the testing result of the first base station is accurate, if the second base station detects that the second terminal is not positioned at cell edge, then think that mistake, so far process ends are detected in the first base station.
According to the resource regulating method of above-described embodiment, when the first base station can be avoided due to some reasons to cause erroneous judgement, carrying out unnecessary scheduling to the second base station and the first base station limits, and improves the reliability of this resource regulating method.
Fig. 4 is the structural representation of base station of the present invention.As shown in Figure 4, this base station comprises:
First processing module 11, path loss SNPL for described first community that reported by the first terminal of the first covered community and the second adjacent community compares with the first threshold value preset, and wherein said second community is by the second adjacent base station coverage;
Second processing module 12, if be less than described first threshold value for the SNPL of the terminal to report of described first community, then detects the second terminal whether existing in described second community and the interference of described first terminal is greater than to the second default threshold value;
3rd processing module 13, if for there is described second terminal, then sends the interference notice carrying described second end message to described second base station;
4th processing module 14, mutually asynchronous with the scheduling of described second base station to described second terminal determined according to described second end message for making the scheduling of described first terminal.
The flow process of the base station execution scheduling of resource of above-described embodiment is identical with the resource regulating method of above-described embodiment, so place repeats no more.
According to the base station of above-described embodiment, owing to determining according to the SNPL of terminal to report to judge whether the community that adjacent second base station covers exists strong jamming to this terminal further after terminal is positioned at cell edge, if exist, notify the second base station, match with the first base station to make the second base station, to stagger scheduling occasion to there is strongly disturbing terminal, to reduce interference between the two, thus the defect that the throughput avoiding Cell Edge User to cause because being subject to neighbor cell is low, improve the throughput of HSUPA network small area edge customer.
Further, in the base station of above-described embodiment, also comprise:
5th processing module, for improving the transmitting power mandate of described first terminal.
According to the base station of above-described embodiment, the 5th processing module further increases the throughput of first terminal by the transmitting power mandate improving first terminal.Maximize to realize speed, the transmitting power mandate of first terminal can be adjusted to the maximum transmission power that first terminal is supported by the 5th processing module.
Further, in the base station of above-described embodiment, the 3rd processing module comprises:
First performance element, for generate incoherent first scheduling time sequence and second scheduling time sequence;
Second performance element, for send to described second base station carry described second end message and described second scheduling time sequence interference notice, dispatch to make described second base station second terminal according to described second scheduling time sequence pair;
Further, described 4th processing module is used for first terminal according to described first scheduling time sequence pair and dispatches.
According to the base station of above-described embodiment, can make with the second base station that to there is the scheduling occasion of strongly disturbing terminal completely staggered for being positioned at cell edge, reduction interference that can be fabulous, thus effectively improve the throughput of edge customer.
Further, in the base station of above-described embodiment, the 4th processing module is used for generating random number before dispatching described first terminal, and if only if operation dispatching when described random number is less than the 3rd predetermined threshold value.
According to the base station of above-described embodiment, by dispatching being subject to strongly disturbing terminal according to certain random chance, significantly reduce the probability that there are strongly disturbing two terminals and dispatch simultaneously very quickly and easily, thus reduce interference, effectively improve the throughput of edge customer.
The present invention also provides a kind of communication system, and this communication system comprises the base station of above-described embodiment and is positioned at the terminal of base station range.
According to the communication system of above-described embodiment, the throughput of cell-edge terminals effectively can be improved.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. a resource regulating method, is characterized in that, comprising:
The path loss SNPL of described first community that the first terminal of the first covered community reports by the first base station and the second adjacent community compares with the first threshold value preset, and wherein said second community is by the second adjacent base station coverage;
If the SNPL that the first terminal of described first community reports is less than described first threshold value, then described first base station detects in described second community whether there is the second terminal interference of described first terminal being greater than to the second default threshold value;
If there is described second terminal, then described first base station sends the interference notice carrying described second end message to described second base station;
Described first base station is mutually asynchronous with the scheduling of described second base station to described second terminal determined according to described second end message to the scheduling of described first terminal;
The transmitting power mandate of described first terminal is improved in described first base station.
2. resource regulating method according to claim 1, is characterized in that, described first base station sends step from the interference notice carrying described second end message to described second base station comprises:
Described first base station generate incoherent first scheduling time sequence and second scheduling time sequence;
Described first base station to described second base station send carry described second end message and described second scheduling time sequence interference notice;
Further, described first base station comprises the step that the scheduling of described first terminal is mutually asynchronous with the scheduling of described second base station to described second terminal:
Described first base station first terminal according to described first scheduling time sequence pair is dispatched; Described second base station second terminal according to described second scheduling time sequence pair is dispatched.
3. resource regulating method according to claim 1, is characterized in that, described first base station comprises the step that the scheduling of described first terminal is mutually asynchronous with the scheduling of described second base station to described second terminal:
Described first base station is carried out before scheduling to described first terminal and described second base station all generates random number to before described second terminal scheduling, and if only if operation dispatching when described random number is less than the 3rd predetermined separately threshold value and the 4th threshold value.
4. resource regulating method according to claim 1, it is characterized in that, described first base station to after described second base station sends the step of the interference notice carrying described second end message, described first base station also comprises before the step that the scheduling of described first terminal is mutually asynchronous with the scheduling of described second base station to described second terminal determined according to described second end message:
The SNPL of described second terminal to report and the 5th threshold value preset compare by described second base station; If the SNPL of described second terminal to report is greater than described 5th threshold value, then process ends; If the SNPL of described second terminal to report is less than or equal to described 5th threshold value, then perform described first base station to the scheduling of the described first terminal step mutually asynchronous with the scheduling of described second base station to described second terminal determined according to described second end message.
5. a base station, is characterized in that, comprising:
First processing module, the path loss SNPL for described first community that reported by the first terminal of the first covered community and the second adjacent community compares with the first threshold value preset, and wherein said second community is by the second adjacent base station coverage;
Second processing module, if be less than described first threshold value for the SNPL of the terminal to report of described first community, then detects the second terminal whether existing in described second community and the interference of described first terminal is greater than to the second default threshold value;
3rd processing module, if for there is described second terminal, then sends the interference notice carrying described second end message to described second base station;
4th processing module, mutually asynchronous with the scheduling of described second base station to described second terminal determined according to described second end message for making the scheduling of described first terminal;
5th processing module, for improving the transmitting power mandate of described first terminal.
6. base station according to claim 5, is characterized in that, described 3rd processing module comprises:
First performance element, for generate incoherent first scheduling time sequence and second scheduling time sequence;
Second performance element, for send to described second base station carry described second end message and described second scheduling time sequence interference notice, dispatch to make described second base station second terminal according to described second scheduling time sequence pair;
Further, described 4th processing module is used for first terminal according to described first scheduling time sequence pair and dispatches.
7. base station according to claim 5, is characterized in that, described 4th processing module is used for generating random number before dispatching described first terminal, and if only if operation dispatching when described random number is less than the 3rd predetermined threshold value.
8. a communication system, is characterized in that, comprise as arbitrary in claim 5 ~ 7 as described in base station and the terminal of base station range as described in being positioned at.
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CN101420716A (en) * | 2007-10-23 | 2009-04-29 | 华为技术有限公司 | Method, system and device for uplink interference source detection |
CN102045854A (en) * | 2009-10-22 | 2011-05-04 | 中兴通讯股份有限公司 | Method for interference coordination of LTE (Long Term Evolution) system |
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CN101420716A (en) * | 2007-10-23 | 2009-04-29 | 华为技术有限公司 | Method, system and device for uplink interference source detection |
CN102045854A (en) * | 2009-10-22 | 2011-05-04 | 中兴通讯股份有限公司 | Method for interference coordination of LTE (Long Term Evolution) system |
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