CN101272172B - Road loss compensation factor configuration method and device - Google Patents
Road loss compensation factor configuration method and device Download PDFInfo
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- CN101272172B CN101272172B CN2008100961982A CN200810096198A CN101272172B CN 101272172 B CN101272172 B CN 101272172B CN 2008100961982 A CN2008100961982 A CN 2008100961982A CN 200810096198 A CN200810096198 A CN 200810096198A CN 101272172 B CN101272172 B CN 101272172B
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Abstract
The invention discloses a method for configuring a line loss compensation factor, which comprises the steps that: a base station sets the area division threshold according to the interference signal strength of the strongest interference cell; the base station divides a network covered by the base station into a plurality of layers according to the area division threshold; the base station respectively configures adjustment modes of line loss compensation factor for the divisiory areas. In addition, the invention also discloses a device for configuring the line loss compensation factor. By adopting the technical scheme, the system overload can be effectively reduced, the time of uplink power control can be shortened and the effectiveness of the uplink power control can be improved.
Description
Technical field
The present invention relates to the communications field, and especially, relate to a kind of road loss compensation factor configuration method and device.
Background technology
In the NGBW communication network, solve between the cordless communication network small area and disturb, become a key factor that improves inter-cell user terminal (User Terminal is referred to as UT) throughput and average UT throughput, but, also be faced with formidable challenges simultaneously.
At present, in Institute of Electrical and Electronics Engineers (Institute for Electrical andElectronic Engineers is referred to as IEEE) 802.16j, IMT-Advanced (IMT-Advanced), WINNER, all propose to adopt the methods such as interference randomization, interference coordination, interference elimination to solve the problem of presence of intercell interference.At Long Term Evolution (Long-TermEvolution, referred to as LTE) in the strong jamming level of UT to all neighbor cells of giving chapter and verse, cell coverage area is divided into internal layer and skin, and the method that adopts Partial Power control and path loss to compensate solves the problem of presence of intercell interference.Wherein, internal layer is the zone that does not have presence of intercell interference, uses the total power compensation; Outer zone for having presence of intercell interference, the method that adopts Partial Power control and path loss to compensate solves the problem of presence of intercell interference.
In LTE, propose to adopt in the method that Partial Power is controlled and path loss compensates of layering, road loss compensation factor is configured to the subset of a 3bit, but, how the road loss compensation factor that does not provide the 3bit subset should effectively use and how make the 3bit subset effectively to shorten the time of up-link power control, thereby improves the concrete scheme of up-link power control.
Summary of the invention
Consider the problems referred to above and make the present invention, for this reason, main purpose of the present invention is to provide a kind of road loss compensation factor configuration method, and road loss compensation factor gets the uncertain problem of occupation mode in the relevant issues to solve.
According to one embodiment of present invention, provide a kind of road loss compensation factor configuration method, be used at long evolving system, the transmitting power of the up link of user terminal to base station has been controlled.
Road loss compensation factor configuration method according to the embodiment of the invention comprises: threshold value is divided according to the interference signal intensity setting area of its strong jamming residential quarter in the base station; The base station is divided into a plurality of layers according to the network that zone division threshold value covers the base station; The base station disposes respectively the adjustment mode of road loss compensation factor to a plurality of layers of dividing.
Preferably, in the base station network is divided in three layers the situation, the base station determines that according to the interference signal intensity of its strong jamming residential quarter threshold value is divided in the first area and second area is divided threshold value, and wherein, the first area is divided threshold value and divided threshold value less than second area.
Wherein, when dividing, the base station divides threshold value according to the first area and second area division threshold value can be divided into network following three layers: internal layer area, transitional region and outer zone, wherein, the layer that the first area is divided between threshold value and the second area division threshold value is transitional region, the layer of dividing threshold value less than the first area is internal layer area, and the layer of dividing threshold value greater than second area is outer zone.
In addition, before the adjustment mode of above-mentioned distribution road loss compensation factor, further comprise: the current high reject signal intensity of user terminal measurement, and report the base station; Current high reject signal intensity is judged less than predetermined first interference signal intensity contrast threshold in the base station whether, and is being judged as in the situation that is, zone under the threshold decision user terminal is divided according to the zone in the base station; Wherein, first interference signal intensity contrast threshold is used for judging whether user terminal belongs to the network that the base station covers.
And, judge that in the base station base station informing user terminal disconnects and again access in the current situation of high reject signal intensity greater than first interference signal intensity contrast threshold.
In addition, user terminal uses the adjustment mode of corresponding road loss compensation factor to carry out subsequent treatment according to the layer at its place.
According to the embodiment of the invention on the other hand, provide a kind of road loss compensation factor inking device, be used at long evolving system, the up-link transmission power of user terminal to base station has been controlled.
Road loss compensation factor inking device according to the embodiment of the invention comprises: module is set, is used for the base station and divides threshold value according to the interference signal intensity setting area of the strong jamming residential quarter of cell list; Divide module, be used for the base station and be divided into a plurality of layers according to the network that zone division threshold value covers the base station; Configuration module, base station dispose respectively the adjustment mode of road loss compensation factor to a plurality of layers of dividing.
Preferably, dividing module network is being divided in three layers the situation, module is set arranges according to the interference signal intensity of its strong jamming residential quarter that threshold value is divided in the first area and second area is divided threshold value, wherein, the first area is divided threshold value and is divided threshold value less than second area.
Wherein, divide module when dividing, divide module and according to first area division threshold value and second area division threshold value network is divided into following three layers: internal layer area, transitional region and outer zone, wherein, the layer that the first area is divided between threshold value and the second area division threshold value is transitional region, the layer of dividing threshold value less than the first area is internal layer area, and the layer of dividing threshold value greater than second area is outer zone.
By means of technical scheme of the present invention, can effectively reduce the expense of system, shorten the time of up-link power control, improve the validity of up-link power control.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of writing, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide a further understanding of the present invention, and consists of the part of specification, is used for together with embodiments of the present invention explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the road loss compensation factor configuration method of the embodiment of the invention;
Fig. 2 is the adjustment mode configuration schematic diagram according to the distribution road loss compensation factor of the embodiment of the invention;
Fig. 3 is the schematic diagram that network is carried out layering according to the road loss compensation factor configuration method of the embodiment of the invention;
Fig. 4 is the flow chart according to the detailed processing of the road loss compensation factor configuration method of the embodiment of the invention; And
Fig. 5 is the block diagram according to the road loss compensation factor inking device of apparatus of the present invention embodiment.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, is not intended to limit the present invention.
Embodiment of the method
In the present embodiment, provide a kind of road loss compensation factor configuration method, be used at long evolving system, the transmitting power of the up link of user terminal to base station has been controlled.Fig. 1 is the flow chart according to the road loss compensation factor configuration method of the embodiment of the invention.
As shown in Figure 1, said method may further comprise the steps:
Step S102, threshold value is divided according to the interference signal intensity setting area of its strong jamming residential quarter in the base station;
Step S104, the base station is divided into a plurality of layers according to the network that zone division threshold value covers the base station;
Step S106, the base station disposes respectively the adjustment mode of road loss compensation factor to a plurality of zones of dividing.Wherein, Fig. 2 shows the schematic diagram of the adjustment mode of each layer distribution road loss compensation factor.
In actual applications, can select threshold value (above-mentioned zone division threshold value) to produce the adjacent base station (BS) that disturbs to UT by interference source (other base station) be distinguished, be divided into close coupling set and no tight coupling set, close coupling set is that interference signal intensity surpasses interference source and selects threshold value that UT is produced strongly disturbing neighbor bss, no tight coupling set is that interference signal intensity surpasses interference source and selects threshold value that UT is not produced strongly disturbing adjacent base station BS, and a kind of obtaining value method of new road loss compensation factor and the modification method of up-link power control are used in each set.
In the base station network is divided in three layers the situation, the base station determines that according to the interference signal intensity of its strong jamming residential quarter threshold value is divided in the first area and second area is divided threshold value, and wherein, the first area is divided threshold value and divided threshold value less than second area.
When carrying out the zone division, the base station divides threshold value according to the first area and second area division threshold value can be divided into network following three layers: internal layer area, transitional region (interference base station wherein is the no tight coupling set) and skin regional (interference base station wherein is the close coupling set), wherein, the layer that the first area is divided between threshold value and the second area division threshold value is transitional region, the layer of dividing threshold value less than the first area is internal layer area, the layer of dividing threshold value greater than second area is outer zone, the zones of different in user's distinguishing cell.
As shown in Figure 3, internal layer refer to the interference signal intensity of strong jamming residential quarter be lower than internal layer＜=zone of threshold value between the transition region, can think in this zone that presence of intercell interference intensity is very low even not have, can ignore the impact of presence of intercell interference.
Skin refer to the interference signal intensity of strong jamming residential quarter be higher than transition region＜=zone of threshold value between the skin, this zone is the high zone of presence of intercell interference probability, the processing of presence of intercell interference must be carried out, otherwise throughput and the average UT throughput of cell edge UT can be affected.
The interference signal intensity that transition region refers to strong jamming residential quarter between internal layer＜=transition region and transition region＜=threshold value comprises between the skin zone, this zone is between internal layer and skin, high reject signal level is in the acceptable scope, but, it is different from the sensitizing range among the LTE, and Main Function has two:
(1) this zone interference ratio skin is little, when UT is in this zone, can be by suitably adjusting road loss compensation factor, to reach target transmit power, reduced the interference to other UT and adjacent cell in the cell coverage area that causes because improving transmitting power, increase simultaneously the flexibility when path loss compensates, effectively increased throughput and the average UT throughput of cell edge UT;
(2) this zone and internal layer and outer regional employed running time-frequency resource, namely, Physical Resource Block (PRB) keeps quadrature, when internal layer or outer zone overweight or fully loaded when causing shared running time-frequency resource too much because of load, this regional running time-frequency resource can be used as effectively and replenishes, the orthogonality of resource after having guaranteed simultaneously to replenish.
According to the layering to overlay area in the cordless communication network of the region partitioning method of this cordless communication network, can make the base station at the employed PRB of frequency domain scheduling UT, do not used by the UT in the adjacent cell, the up-link transmission power of controlling simultaneously different layers carries out the coordination of presence of intercell interference and cell edge UT throughput and the average UT throughput in the raising cordless communication network under not having the prerequisite of bandwidth loss.
In addition, before the adjustment mode of above-mentioned distribution road loss compensation factor, further comprise: the current high reject signal intensity of user terminal measurement, and report the base station; Current high reject signal intensity is judged less than predetermined first interference signal intensity contrast threshold in the base station whether, and is being judged as in the situation that is, zone under the threshold decision user terminal is divided according to the zone in the base station; Wherein, first interference signal intensity contrast threshold is used for judging whether user terminal belongs to the network that the base station covers.
And, judge that in the base station base station informing user terminal disconnects and again access in the current situation of high reject signal intensity greater than first interference signal intensity contrast threshold.
In addition, user terminal uses the adjustment mode of corresponding road loss compensation factor to carry out subsequent treatment according to the layer at its place.
Below with reference to accompanying drawings, the step of above-mentioned processing scheme is described in detail, Fig. 4 is the flow chart according to the detailed processing of the method for the embodiment of the invention.
As shown in Figure 4, comprise following processing:
Step 401, threshold value is divided in BS setting wireless communication network zone;
Step 402, BS divides threshold value according to cordless communication network zone the overlay area of BS is divided into three layers: internal layer area, transition region zone and outer zone;
Step 403, BS determines the adjustment mode of the road loss compensation factor that each layer disposes respectively, road loss compensation factor is used for the up-link transmission power of its equivalent layer of control;
Step 404, BS sets the running time-frequency resource that each layer disposes;
Step 405, BS sets first interference signal intensity contrast threshold;
Step 406, UT measures current high reject signal intensity, and reports BS, if intensity greater than first interference signal intensity contrast threshold, then execution in step 407, otherwise, execution in step 408;
Step 407, BS notifies current UT to disconnect, and restarts the at random process of access;
Step 408, BS determines the residing wireless network layering of UT;
Step 409, BS determines the road loss compensation factor adjustment mode that UT uses;
Step 410, BS calculates the up-link transmission power of UT;
Step 411, BS is by the up-link transmission power of uplink grant notice UT;
Step 412, the up-link transmission power that UT calculates according to BS is adjusted the up-link transmission power of self.
Device embodiment
In the present embodiment, provide a kind of road loss compensation factor inking device, be used at long evolving system, the up-link transmission power of user terminal to base station has been controlled.Fig. 5 is the block diagram according to the road loss compensation factor inking device of apparatus of the present invention embodiment.
As shown in Figure 5, said apparatus comprises:
Module 52 is set, is used for the base station and divides threshold value according to the interference signal intensity setting area of the strong jamming residential quarter of cell list;
Divide module 54, be used for the base station and be divided into a plurality of layers according to the network that zone division threshold value covers the base station;
Configuration module 56, base station dispose respectively the adjustment mode of road loss compensation factor to a plurality of zones of dividing.
Dividing module 54 network is being divided in three layers the situation, module 52 is set arranges according to the interference signal intensity of its strong jamming residential quarter that threshold value is divided in the first area and second area is divided threshold value, wherein, the first area is divided threshold value and is divided threshold value less than second area.
Wherein, divide module 54 when dividing, divide module 54 and according to first area division threshold value and second area division threshold value network is divided into following three layers: internal layer area, transitional region and outer zone, wherein, the layer that the first area is divided between threshold value and the second area division threshold value is transitional region, the layer of dividing threshold value less than the first area is internal layer area, and the layer of dividing threshold value greater than second area is outer zone.
In sum, by means of above-mentioned technical scheme, by the modification method of in different layerings, controlling by road loss compensation factor and up-link power reasonably are set, effectively reduce the expense of system, shorten the time of up-link power control, improved the validity of up-link power control.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. road loss compensation factor configuration method is used at long evolving system, and the transmitting power of the up link of user terminal to base station is controlled, and it is characterized in that described method comprises:
Threshold value is divided according to the interference signal intensity setting area of its strong jamming residential quarter in the base station;
Described base station is divided into a plurality of layers according to the network that described zone division threshold value covers described base station;
Described base station disposes respectively the adjustment modes of road loss compensation factor to described a plurality of layers of dividing, wherein, before the adjustment mode of configuration road loss compensation factor, further comprises: the current high reject signal intensity of user terminal measurement, and report described base station; Described current high reject signal intensity is judged less than predetermined first interference signal intensity contrast threshold in described base station whether, and is being judged as in the situation that is, zone under the described user terminal of threshold decision is divided according to described zone in described base station; Wherein, described first interference signal intensity contrast threshold is used for judging whether described user terminal belongs to the network that described base station covers.
2. method according to claim 1, it is characterized in that, in described base station described network is divided in three layers the situation, described base station determines that according to the interference signal intensity of its strong jamming residential quarter threshold value is divided in the first area and second area is divided threshold value, wherein, described first area is divided threshold value and is divided threshold value less than described second area.
3. method according to claim 2, it is characterized in that, when dividing, described base station divides threshold value according to described first area and described second area division threshold value is divided into following three layers with described network: internal layer area, transitional region and outer zone, wherein, the layer that described first area is divided between threshold value and the described second area division threshold value is described transitional region, the layer of dividing threshold value less than described first area is internal layer area, and the layer of dividing threshold value greater than described second area is outer zone.
4. method according to claim 1 is characterized in that, further comprises:
Judge that in described base station in the described current situation of high reject signal intensity greater than described first interference signal intensity contrast threshold, described base station notifies described user terminal to disconnect and again access.
5. method according to claim 1 is characterized in that, user terminal uses the adjustment mode of corresponding road loss compensation factor to carry out subsequent treatment according to the layer at its place.
6. a road loss compensation factor inking device is used at long evolving system, and the up-link transmission power of user terminal to base station is controlled, and it is characterized in that described device comprises:
Module is set, is used for described base station and divides threshold value according to the interference signal intensity setting area of the strong jamming residential quarter of cell list;
Divide module, be used for described base station and be divided into a plurality of layers according to the network that described zone division threshold value covers described base station;
Configuration module, described base station disposes respectively the adjustment mode of road loss compensation factor to described a plurality of layers of dividing, wherein, before the adjustment mode of configuration road loss compensation factor, described base station receives the current high reject signal intensity by described user terminal measurement of user terminal to send up; Described current high reject signal intensity is judged less than predetermined first interference signal intensity contrast threshold in described base station whether, and is being judged as in the situation that is, zone under the described user terminal of threshold decision is divided according to described zone in described base station; Wherein, described first interference signal intensity contrast threshold is used for judging whether described user terminal belongs to the network that described base station covers.
7. device according to claim 6, it is characterized in that, in described division module described network is divided in three layers the situation, the described module that arranges arranges according to the interference signal intensity of its strong jamming residential quarter that threshold value is divided in the first area and second area is divided threshold value, wherein, described first area is divided threshold value and is divided threshold value less than described second area.
8. device according to claim 7, it is characterized in that, described division module is when dividing, described division module divides threshold value according to described first area and described second area division threshold value is divided into following three layers with described network: internal layer area, transitional region and outer zone, wherein, the layer that described first area is divided between threshold value and the described second area division threshold value is described transitional region, the layer of dividing threshold value less than described first area is internal layer area, and the layer of dividing threshold value greater than described second area is outer zone.
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| CN101729104B (en) | 2008-10-31 | 2013-03-27 | 中兴通讯股份有限公司 | Method and system for controlling uplink transmitting power as well as base station |
| CN101527958B (en) * | 2009-04-09 | 2014-09-10 | 中兴通讯股份有限公司 | Determining method of launch power, base station and terminal thereof |
| CN101909301B (en) * | 2009-06-08 | 2015-06-03 | 中兴通讯股份有限公司 | Method and system for eliminating neighbor cell interference |
| US9031599B2 (en) * | 2009-12-08 | 2015-05-12 | Futurewei Technologies, Inc. | System and method for power control |
| US8311055B2 (en) | 2009-12-08 | 2012-11-13 | Futurewei Technologies, Inc. | System and method for scheduling users on a wireless network |
| US8515474B2 (en) | 2010-01-20 | 2013-08-20 | Futurewei Technologies, Inc. | System and method for scheduling users on a wireless network |
| CN101835256B (en) * | 2010-03-31 | 2012-09-19 | 浙江大学 | Method and device for estimating path loss |
| CN101958780B (en) * | 2010-10-15 | 2015-06-03 | 中兴通讯股份有限公司 | Method and device for inhibiting same frequency interference |
| US8995388B2 (en) | 2012-01-19 | 2015-03-31 | Futurewei Technologies, Inc. | Systems and methods for uplink resource allocation |
| CN104619001B (en) * | 2014-12-29 | 2018-11-02 | 京信通信系统（中国）有限公司 | Base station ascending power control method and system |
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| CN101091397B (en) * | 2004-12-31 | 2010-04-28 | Ut斯达康通讯有限公司 | Method for distributing uplink chain time gap in UTRA TDD system and its base station system |
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| EP1638270A2 (en) * | 2004-09-17 | 2006-03-22 | Deutsche Telekom AG | Method and system to model TCP throughput, assess power control measures, and compensate for fading and path loss |
| CN1866780A (en) * | 2006-03-17 | 2006-11-22 | 华为技术有限公司 | Optimization method for network uplink load control |
| CN101075830A (en) * | 2006-05-17 | 2007-11-21 | 大唐移动通信设备有限公司 | Method for determining down initial transmitting power |
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