CN101707778B - Method and device for obtaining baseline frequency band of neighboring cell - Google Patents
Method and device for obtaining baseline frequency band of neighboring cell Download PDFInfo
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- CN101707778B CN101707778B CN200910197659XA CN200910197659A CN101707778B CN 101707778 B CN101707778 B CN 101707778B CN 200910197659X A CN200910197659X A CN 200910197659XA CN 200910197659 A CN200910197659 A CN 200910197659A CN 101707778 B CN101707778 B CN 101707778B
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Abstract
The embodiment of the invention discloses a method and a device for obtaining a baseline frequency band of a neighboring cell, wherein the method comprises the following steps: receiving a high interference indication (HII) message carrying with the frequency status identification, which is sent by the neighboring cell; judging the frequency band status of the neighboring cell according to the frequency status identification; and when the frequency band status of the neighboring cell is baseline frequency band status, obtaining the frequency allocation indication in the HII message, wherein the frequency band allocation corresponding to the frequency band allocation indication is the baseline frequency band. In the method and the device for obtaining the baseline frequency band of the neighboring cell, the frequency band identification carried in the HII message distinguishes and sends the current frequency band status of the neighboring cell of the HII message, therefore, when the neighboring cell is in the baseline frequency band status, a cell for receiving HII message obtains bitmap in the HII message, and the frequency band allocation corresponding to the bitmap is the baseline frequency band, thus realizing that the cell obtains the baseline frequency band of the neighboring cell.
Description
Technical field
The present invention relates to the communications field, especially relate to a kind of method and apparatus that obtains baseline frequency band of neighboring cell.
Background technology
In LTE (Long Time Evolution, Long Term Evolution) system, the whole system frequency band can be used in each sub-district, the inevitable like this interference that exists between the sub-district.Particularly be in the closer user of utilizing cell edge frequency band and adjacent area edge customer distance, its communication quality receives the influence of presence of intercell interference very big.
The service provider can divide initial frequency band for adjacent sub-district; The initial frequency band of each sub-district comprises center frequency-band and edge band; The initial frequency band division of the general employing of the division of edge band, the situation of change of passing through this cell load is then adjusted the size of edge band.Existing initial edge band splitting scheme all adopts edge band to account for the scheme of total frequency band 1/3.As shown in Figure 1, expression all be that the full range band of sub-district 1, sub-district 2 and sub-district 3 is divided situation; The adjacent area is disturbed each other with sub-district 2 in sub-district 1, and the adjacent area is disturbed each other with sub-district 3 in sub-district 2, and blank frequency band is wherein represented center frequency-band, and hypographous frequency band is represented edge band.Center frequency-band is the low-power frequency band, and center frequency-band is overlapped between adjacent interfered cell can not disturb; Edge band is the high power frequency band, if edge band is overlapped between adjacent interfered cell, can influence the user's communications quality of using this overlapping edge frequency band.
To the adjusting of interfered cell, be at present, give the sub-district that needs the expansion frequency band with unappropriated bandwidth assignment at random according to the current edge band behaviour in service in two sub-districts of disturbing the adjacent area each other; The portable terminal that on a certain frequency band, does not have load, the sub-district that then takies this frequency band can discharge this frequency band, so that use when load is heavier own or adjacent area.
The inventor finds that there is following problem at least in prior art in realizing process of the present invention:
The inventor has introduced the notion of baseline frequency band and non-baseline frequency band for the ease of describing, and baseline frequency band promptly refers to initial full range band division, but not baseline frequency band is divided for change adjusted full range band through this cell load.The frequency band state of a sub-district is the baseline frequency band state perhaps, perhaps is non-baseline frequency band state, and the state beyond the baseline frequency band state all belongs to non-baseline frequency band state.
In the prior art; A sub-district can't obtain the baseline frequency band of adjacent area; When the cell load variation made that its edge band departs from baseline frequency band, an edge band expansion/contraction direction to its adjacent area can't be fixed in this sub-district, can cause the interference band of said sub-district and its adjacent area fixing.When portable terminal need use business; The base station can not find the less frequency range of disturbance fluctuation; Therefore can't be that portable terminal (is for example dispatched suitable frequency range to professional type; Real-time video class, network download etc. are professional just to need the less frequency range of scheduling disturbance fluctuation, and note, conversation etc. just can be dispatched the bigger frequency range of disturbance fluctuation to the not high business of operation quality requirement), user's business experience also can be relatively poor.
Summary of the invention
The purpose of the embodiment of the invention provides a kind of method and apparatus that obtains baseline frequency band of neighboring cell, can't obtain the problem of baseline frequency band of neighboring cell with sub-district in the solution prior art.
The embodiment of the invention provides a kind of method that obtains baseline frequency band of neighboring cell, and said baseline frequency band is that initial full range band is divided, and said method comprises:
Receive the high interference Indication message that carries the frequency band status indicator that send the adjacent area;
According to said frequency band status indicator, judge the frequency band state of said adjacent area;
When the frequency band state of said adjacent area is the baseline frequency band state, obtain the frequency band division indication in the said high interference Indication message, the corresponding frequency band division of said frequency band division indication is baseline frequency band;
According to the said baseline frequency band of neighboring cell that obtains, the dimension of fixing this sub-district edge band when load is heavier, and the shrinkage direction of this sub-district edge band when load is light.
The embodiment of the invention also provides a kind of device that obtains baseline frequency band of neighboring cell, and said baseline frequency band is that initial full range band is divided, and said device comprises:
Receiver module is used to receive the high interference Indication message that carries the frequency band status indicator that send the adjacent area;
Judge module is used for judging the frequency band state of said adjacent area according to said frequency band status indicator;
Acquisition module; Be used for when the frequency band state of said adjacent area is the baseline frequency band state; Obtain the frequency band division indication in the said high interference Indication message, the corresponding frequency band division of said frequency band division indication is baseline frequency band, so that according to the said baseline frequency band of neighboring cell that obtains; The dimension of fixing this sub-district edge band when load is heavier, and the shrinkage direction of this sub-district edge band when load is light.
The method and apparatus of the embodiment of the invention; Frequency band status indicator through being carried in the HII message is distinguished the adjacent area present located frequency band state that sends said HII message; In the time of can making the sub-district that receives said HII message be in the baseline frequency band state in this adjacent area; Obtain the bitmap in the HII message, the frequency band division that this bitmap is corresponding is baseline frequency band, has realized that thus the sub-district obtains the baseline frequency band of adjacent area.
Description of drawings
Fig. 1 is that edge band initial in the prior art is divided sketch map;
Fig. 2 is the center frequency-band in a pair of interference adjacent area and the distribution schematic diagram of edge band in the embodiment of the invention;
Fig. 3 be in the embodiment of the invention another to disturbing center frequency-band and the distribution schematic diagram of edge band in the adjacent area;
Fig. 4 is the schematic flow sheet of method of the acquisition baseline frequency band of neighboring cell of the embodiment of the invention;
Fig. 5 is the structural representation of device of the acquisition baseline frequency band of neighboring cell of the embodiment of the invention.
Embodiment
For above-mentioned purpose, the feature and advantage that make the embodiment of the invention can be more obviously understandable, the embodiment of the invention is done further detailed explanation below in conjunction with accompanying drawing and embodiment.
The embodiment of the invention provides a kind of method that obtains baseline frequency band of neighboring cell, and is as shown in Figure 4, comprising:
S101 receives the high interference Indication message that carries the frequency band status indicator that send the adjacent area.
In the prior art, can frequently send HII (High Interference Indication, high interference indication) message between the noisy sub-district.HII message is used to notify the disturbed condition of this sub-district, adjacent area, receives RB (Resource Block, the Resource Block) number of the sub-district of said HII message through high power frequency band in the HII message, judges the present disturbed condition in sub-district that sends HII message.Carry the frequency band division indication bitmap and the adjacent area physical I D of the sub-district of sending HII message in the HII message of standard.Bitmap representes the dividing condition of 110 RB of full range band in the HII message, and said 110 RB are proportional corresponding with the full range band.Each message can be divided into a plurality of cells, the corresponding RB of each cell.
The interference compensation technology of minizone mainly contains: presence of intercell interference randomized technique, presence of intercell interference cancellation technology and Inter-Cell Interference Coordination technology.Shared channel for the transmission data; The embodiment of the invention adopts ICIC (Inter-cell Interference Coordination; Inter-Cell Interference Coordination) technology; This technology is controlled the interference that reduces the minizone through time-frequency resource allocating and the power of coordinating each Cell Edge User, the performance of stabilized communication system, the data throughout of lifting edge customer.
The core concept of ICIC technology is exactly the edge band through division of cells; Stagger with other utilizing cell edge frequency bands that interfere with each other; Make the edge customer of several minizones not produce the phase mutual interference, thereby reach the interference that reduces the minizone, the purpose that promotes the edge customer data throughout.
Though existing HII message has been carried the current bitmap in sub-district that sends said HII message,, also can't realize utilizing this bitmap to carry out ICIC owing to receive the restriction of ICIC algorithm and device processes ability.
The embodiment of the invention is informed the residing frequency band state in sub-district of the said transmission message in adjacent area that receives message through in HII message, carrying the frequency band status indicator of the sub-district of sending message.For example, content that can the allocated frequency band status indicator is 1 o'clock, and the sub-district that message is sent in expression is in the baseline frequency band state, is 0 o'clock, and the sub-district of sending message is in non-baseline frequency band state; Can certainly be opposite with afore mentioned rules, be merely example here.
S102 according to said frequency band status indicator, judges the frequency band state of said adjacent area.
The embodiment of the invention provides two kinds of modes of in HII message, carrying the frequency band status indicator:
1) said frequency band status indicator is carried by first position of said high interference Indication message.
Because the bitmap in the HII message representes the frequency band division situation of full range band (110 RB); And under various bandwidth mode; The represented RB of first bit of HII message is used to PUCCH (Physical Uplink Control Channel, ascending physical signal control channel), rather than is used for frequency degree of the recruiting frequency band of ICIC; First bit is idle condition usually, therefore can use first bit to carry the frequency band status indicator.
2) said frequency band status indicator is carried by one in said high interference Indication message expansion cell.
Through in the HII standard information, increasing a cell, be used to carry the frequency band status indicator, be that the baseline frequency band state also is non-baseline frequency band state to indicate the bitmap in this HII message.The cell of this expansion can be the cell on the optional position in the HII message, and the embodiment of the invention is not done qualification to this.
S103 when the frequency band state of said adjacent area is the baseline frequency band state, obtains the bitmap in the said HII message, and the frequency band division that said bitmap is corresponding is baseline frequency band.
When the frequency band status indicator in HII message was the baseline frequency band status indicator, the bitmap in this HII message was only use value for the sub-district that receives message.
Receive the HII message of adjacent area when a sub-district after; If its midband status indicator is represented the baseline frequency band state; This sub-district can obtain out with the bitmap in the said HII message so; The frequency band division that this bitmap is corresponding is baseline frequency band, and this sub-district obtains the baseline frequency band of adjacent area thus, in order to follow-up use.
Because the baseline frequency band of each sub-district can not change in one long period; Therefore; After the adjacent area of this sub-district receives the HII message of sending this sub-district; If the frequency band status indicator that this message is carried is the baseline frequency band status indicator, the adjacent area obtains bitmap and the storage in this HII message so, and the baseline frequency band up to this sub-district upgrades the bitmap of storage the adjacent area after changing again.
Certainly, can also stipulate that certain sub-district changes the back initiatively to adjacent area transmission HII message at baseline frequency band, its baseline frequency band of notice adjacent area is divided situation.
After step S103, can also comprise step S104: according to the said baseline frequency band of neighboring cell that obtains, the dimension of fixing this sub-district edge band when load is heavier, and the shrinkage direction of this sub-district edge band when load is light.
The sub-district can be adjusted the distribution of frequency band according to its present disturbed condition, emission situation, load variations situation etc., can depart from the baseline frequency band state thus, and be in non-baseline frequency band state.Two adjacent sub-districts are disturbed the adjacent area each other, and ICIC coordinates to two adjacent sub-districts.Because the edge band of each sub-district is made up of one or two continuous frequency band; Edge band by two frequency bands constitute is more concentrated relatively on frequency range, and the expansion/contraction direction of frequent variations edge band can cause the band interference fluctuation between said two sub-districts.For the disturbance fluctuation with frequency range is reduced in the controllable amplitude, two adjacent sub-districts need be fixed the direction of an edge band expansion/contraction separately.If use the frequency range and the time that produce interference to do curve, can see that then producing the frequency range curve fluctuation of disturbing maintains in the metastable scope.
For two neighbor cells shown in Fig. 1: sub-district 1 and sub-district 2; 1 when confirming the dimension of edge band in the sub-district; Will reduce the interference to sub-district 2, therefore, sub-district 1 can confirm that dimension is for making progress as far as possible; Because expansion downwards can overlap with the initial edge frequency band of sub-district 2, be easy to cause interference; Can find out upwards do not had available band by Fig. 1, so the edge band of sub-district 1 when expansion, is the nethermost frequency band upwards expansion again of turning back back.The direction of the edge band that is appreciated that sub-district 1 when shrinking is opposite during with expansion.From Fig. 1, can see; Though sub-district 1 can upwards be shunk also and can shrink downwards when load is light; If but select upwards to shrink, used sub-district 1 when sub-district 2 and upwards shunk the frequency band that discharges, if sub-district 1 live load increases; The frequency range in its baseline frequency band can preferentially be used in sub-district 1, and this will produce interference with sub-district 2 on this frequency range; If select to shrink downwards, then producing the frequency range of disturbing can not be the frequency range that is adjacent to each other in sub-district 1 or sub-district 2 baseline frequency bands just, and the disturbance fluctuation with frequency range is controlled in the small range thus, uses in order to the scheduling that base station side is follow-up.
Referring to Fig. 2, the adjacent area is disturbed each other with sub-district 2 in sub-district 1.Wherein the edge load of sub-district 1 is lighter; When sub-district 1 needs to shrink edge band; Because the baseline frequency band of sub-district 2 can be known in sub-district 1 from the HII message that send sub-district 2; Therefore can be when shrinking edge band, confirming downwards is shrinkage direction, to stablize the band interference fluctuation of minizone.
After step S103, can also comprise step S105:, judge whether the baseline frequency band of this sub-district conflicts with baseline frequency band of neighboring cell according to the said baseline frequency band of neighboring cell that obtains.
Preferably, if said judged result then adopts the mode of ICIC that this sub-district and adjacent area are coordinated for not; If said judged result is for being, then the employing mode of adjusting frequency band is at random coordinated this sub-district and adjacent area.
Referring to Fig. 3, the adjacent area is disturbed each other with sub-district 3 in sub-district 2.Receive the HII message of sub-district 2 transmissions in sub-district 3 after; If frequency band status indicator wherein representes that the frequency band state of sub-district 2 is a baseline frequency band; Then sub-district 3 obtains the bitmap of sub-district 2 from HII message, and the frequency band division that this bitmap is corresponding is the baseline frequency band of sub-district 2.Because all there is the baseline frequency band of oneself each sub-district, so sub-district 3 can judge whether the baseline frequency band of oneself conflicts with the baseline frequency band of sub-district 2.If find to have conflict; Then can select to close ICIC; Use the mode of adjusting frequency band at random that sub-district 2 and sub-district 3 are adjusted; Reduce the probability of the edge band interference hits of sub-district 2 and sub-district 3 as far as possible, further, can also operation such as repartition to the baseline frequency band of sub-district 2 and sub-district 3 by the service provider.
The method of the embodiment of the invention; Distinguish the sub-district present located frequency band state that sends HII message through in HII message, carrying the frequency band status indicator; When the sub-district receives that frequency band status indicator in the HII message of sending the adjacent area is the baseline status indicator; Obtain the bitmap in the said HII message, the frequency band division that this bitmap is corresponding is baseline frequency band, has realized that thus the sub-district obtains the baseline frequency band of adjacent area; Further,, can fix the edge band expansion/contraction direction of this sub-district, make that the frequency range that produces interference is more stable, be convenient to the follow-up scheduling in base station to the adjacent area through the said baseline frequency band of neighboring cell that obtains; And judge whether the baseline frequency band of this sub-district conflicts with baseline frequency band of neighboring cell, if conflict then takes appropriate measures.
The embodiment of the invention also provides a kind of device that obtains baseline frequency band of neighboring cell, and is as shown in Figure 5, and said device 1 comprises: receiver module 10, judge module 20 and acquisition module 30.
Wherein, said frequency band status indicator can be carried by first position of said HII message, also can be carried by one in said HII message expansion cell.
The device of the embodiment of the invention; Frequency band status indicator through being carried in the HII message is distinguished the adjacent area present located frequency band state that sends said HII message; In the time of can making the sub-district that receives said HII message be in the baseline frequency band state in this adjacent area; Obtain the bitmap in the HII message, the frequency band division that this bitmap is corresponding is baseline frequency band, has realized that thus the sub-district obtains the baseline frequency band of adjacent area.
Because embodiment is more with the similar content of method embodiment part for device, that therefore describes is simpler, and relevant part sees also method embodiment part, repeats no more here.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to accomplish through program; Described program can be stored in the computer-readable recording medium; This program comprises the steps: to receive the high interference Indication message that carries the frequency band status indicator that send the adjacent area when carrying out; According to said frequency band status indicator, judge the frequency band state of said adjacent area; When the frequency band state of said adjacent area is the baseline frequency band state, obtain the frequency band division indication in the said high interference Indication message, the corresponding frequency band division of said frequency band division indication is baseline frequency band.Said storage medium, as: ROM/RAM, magnetic disc, CD etc.
Need to prove; In this article; Relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint relation or the order that has any this reality between these entities or the operation.And; Term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability; Thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements; But also comprise other key elements of clearly not listing, or also be included as this process, method, article or equipment intrinsic key element.Under the situation that do not having much more more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises said key element and also have other identical element.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.All any modifications of within spirit of the present invention and principle, being done, be equal to replacement, improvement etc., all be included in protection scope of the present invention.
Claims (8)
1. a method that obtains baseline frequency band of neighboring cell is characterized in that, said baseline frequency band is that initial full range band is divided, and said method comprises:
Receive the high interference Indication message that carries the frequency band status indicator that send the adjacent area;
According to said frequency band status indicator, judge the frequency band state of said adjacent area;
When the frequency band state of said adjacent area is the baseline frequency band state, obtain the frequency band division indication in the said high interference Indication message, the corresponding frequency band division of said frequency band division indication is baseline frequency band;
According to the said baseline frequency band of neighboring cell that obtains, the dimension of fixing this sub-district edge band when load is heavier, and the shrinkage direction of this sub-district edge band when load is light.
2. the method for claim 1 is characterized in that, said frequency band status indicator is carried by first position of said high interference Indication message.
3. the method for claim 1 is characterized in that, said frequency band status indicator is carried by one in said high interference Indication message expansion cell.
4. like each described method of claim 1-3, it is characterized in that said method also comprises:, judge whether the baseline frequency band of this sub-district conflicts with baseline frequency band of neighboring cell according to the said baseline frequency band of neighboring cell that obtains.
5. method as claimed in claim 4 is characterized in that, if the baseline frequency band of this sub-district conflicts with baseline frequency band of neighboring cell, then adopts the mode of adjusting frequency band at random that this sub-district and adjacent area are coordinated.
6. a device that obtains baseline frequency band of neighboring cell is characterized in that, said baseline frequency band is that initial full range band is divided, and said device comprises:
Receiver module is used to receive the high interference Indication message that carries the frequency band status indicator that send the adjacent area;
Judge module is used for judging the frequency band state of said adjacent area according to said frequency band status indicator;
Acquisition module; Be used for when the frequency band state of said adjacent area is the baseline frequency band state; Obtain the frequency band division indication in the said high interference Indication message, the corresponding frequency band division of said frequency band division indication is baseline frequency band, so that according to the said baseline frequency band of neighboring cell that obtains; The dimension of fixing this sub-district edge band when load is heavier, and the shrinkage direction of this sub-district edge band when load is light.
7. device as claimed in claim 6 is characterized in that, said frequency band status indicator is carried by first position of said high interference Indication message.
8. device as claimed in claim 6 is characterized in that, said frequency band status indicator is carried by one in said high interference Indication message expansion cell.
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| CN102378277B (en) * | 2010-08-24 | 2013-09-18 | 普天信息技术研究院有限公司 | Method for coordinating high power frequency band in long term evolved system |
| CN101945409B (en) * | 2010-09-03 | 2014-11-19 | 新邮通信设备有限公司 | Method and device for coordinating dynamic interference between neighboring cells of wireless communication system |
| CN102036250B (en) * | 2010-12-28 | 2013-09-25 | 华为技术有限公司 | Dynamic distribution method of uplink frequency band resource and base station |
| CN103458418A (en) * | 2012-05-28 | 2013-12-18 | 中兴通讯股份有限公司 | Super housing estates and interference coordination method for super housing estates networked in common-frequency and chained manner |
| WO2021237657A1 (en) * | 2020-05-29 | 2021-12-02 | Qualcomm Incorporated | Enhancement of mobility in a non-standalone network |
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| CN101534525A (en) * | 2008-03-14 | 2009-09-16 | 中兴通讯股份有限公司 | Inter-cell united frequency hopping method, uplink transmission method and resource borrowing method |
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| CN101534525A (en) * | 2008-03-14 | 2009-09-16 | 中兴通讯股份有限公司 | Inter-cell united frequency hopping method, uplink transmission method and resource borrowing method |
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