CN103595498B - The system of selection of a kind of working sub-band and communication system - Google Patents
The system of selection of a kind of working sub-band and communication system Download PDFInfo
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- CN103595498B CN103595498B CN201210287587.XA CN201210287587A CN103595498B CN 103595498 B CN103595498 B CN 103595498B CN 201210287587 A CN201210287587 A CN 201210287587A CN 103595498 B CN103595498 B CN 103595498B
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Abstract
The invention discloses the system of selection of a kind of working sub-band, the method obtains uplink signal-channel quality and the down channel quality of working sub-band according to the business modulating-coding grade matching respectively in working sub-band uplink and downlink direction, again uplink signal-channel quality and down channel quality are compared with preset value respectively, thus work at present subband is included into sets of subbands to be selected or severe sets of subbands, when there being service needed to transmit, working sub-band is preferentially selected to be transmitted from sets of subbands to be selected, the method is effectively improved the transmission quality of business, reduce the packet loss of business.
Description
Technical field
The present invention relates to communication technical field, be specifically related to system of selection and the communication system of a kind of working sub-band.
Background technology
In a wireless communication system, when variations, link adaptation techniques transmits used modulation coding mode by adjustment and promotes transmission performance, it is ensured that transmission quality.Under the mechanism of shared channel, network side needs to notify that terminal is its Resources allocation by control channel, in the case of resource is more nervous, in order to reserve more resource to Traffic Channel, need to reduce the expense controlling channel as far as possible, such as can use semi-persistent scheduling, or Adaptive Modulation and Coding at a slow speed.
Frequency spectrum resource is very important resource in wireless communication system, and existing frequency spectrum resource is at full stretch, in identical frequency range, except the interference in native system, it is also possible to there is the interference from different system.Usable spectrum is divided into multiple working sub-band continuously or discontinuously by existing wireless communication system, all subbands are carried out serial number by system, when there being user to need to transmit business datum, it is that user shares out the work subband according to the numbering order from big to small or from small to large of working sub-band.In existing wireless communication system, system shares out the work subband or be followed successively by traffic assignments working sub-band according to the numbering of working sub-band for user at random, this method does not consider division feature and the channel quality of subband of subband in system, this this may result in user when working in working sub-band, business packet loss increases, QoS is not being met, and more serious situation can bring business transmission to cannot be carried out down and must discharge current working sub-band.
Summary of the invention
The embodiment of the present invention provides the system of selection of a kind of working sub-band and communication system, to being traffic assignments working sub-band according to the channel quality of working sub-band.
For solving above-mentioned technical problem, embodiment provided by the present invention is achieved through the following technical solutions.
A kind of system of selection of working sub-band, including:
Detect the working sub-band in sets of subbands to be selected the most occupied, if not, it is then service selection working sub-band waiting for transmission in the middle of unappropriated working sub-band from sets of subbands to be selected, is the most then service selection working sub-band waiting for transmission from severe sets of subbands；
Calculate the described business waiting for transmission up modulating-coding grade MCS at the working sub-band up direction selectedULCorticofugal Modulation of Somatosensory encoding levels MCS with down directionDL；
According to up modulating-coding grade MCS obtainedULWith Corticofugal Modulation of Somatosensory encoding levels MCSDLMatching obtains the uplink signal-channel quality CSI of described working sub-band respectivelyULWith down channel quality CSIDL；
Judge the uplink signal-channel quality CSI of the working sub-band obtainedULWith down channel quality CSIDLWhether it is both greater than preset value CSIMIN, the most described working sub-band is put in sets of subbands to be selected, if it is not, then described working sub-band is put in severe sets of subbands.
A kind of communication system, including:
Detector unit, the most occupied for detecting the working sub-band in sets of subbands to be selected；
Select unit, if detecting that the working sub-band in sets of subbands to be selected is the most occupied for described detector unit, it is then service selection working sub-band waiting for transmission in the middle of unappropriated working sub-band from sets of subbands to be selected, if described detector unit detects that the working sub-band in sets of subbands to be selected is the most occupied, then it is service selection working sub-band waiting for transmission from severe sets of subbands；
First computing unit, for calculating the described business waiting for transmission up modulating-coding grade MCS at the working sub-band up direction selectedULCorticofugal Modulation of Somatosensory encoding levels MCS with down directionDL；
Second computing unit, for according to described first calculated up modulating-coding grade MCS of computing unitULWith Corticofugal Modulation of Somatosensory encoding levels MCSDLMatching obtains the uplink signal-channel quality CSI of described working sub-band respectivelyULWith down channel quality CSIDL；
Judging unit, for judging the uplink signal-channel quality CSI that described second computing unit matching obtainsULWith down channel quality CSIDLWhether it is both greater than preset value CSIMIN, the most described working sub-band is put in sets of subbands to be selected, if it is not, then described working sub-band is put in severe sets of subbands.
Can be seen that from technique scheme, the embodiment of the present invention uses according to business modulating-coding grade on the uplink and downlink direction of working sub-band, matching obtains the uplink and downlink channel quality of working channel, again uplink and downlink channel quality is compared with preset value, thus obtaining working sub-band is severe subband or subband to be selected, when there being service needed to transmit, working sub-band is preferentially selected to be transmitted from sets of subbands to be selected, can effectively promote the transmission quality of its business, reduce the packet loss of business, and improve the performance of system.
Accompanying drawing explanation
Fig. 1 is the basic procedure schematic diagram of the working sub-band system of selection that the embodiment of the present invention provides；
Fig. 2 is the structural representation of the communication system that the embodiment of the present invention provides.
Detailed description of the invention
The embodiment of the present invention provides system of selection and the communication system of a kind of working sub-band, difference according to working sub-band channel quality, working sub-band is divided into subband to be selected and severe subband, when for service selection working sub-band, preferentially selects from sets of subbands to be selected.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
First the system of selection to a kind of working sub-band that the embodiment of the present invention provides illustrates.The system of selection of a kind of working sub-band that the embodiment of the present invention provides comprises the following steps:
Detect the working sub-band in sets of subbands to be selected the most occupied, if not, it is then service selection working sub-band waiting for transmission in the middle of unappropriated working sub-band from sets of subbands to be selected, is the most then service selection working sub-band waiting for transmission from severe sets of subbands；
Calculate the described business waiting for transmission up modulating-coding grade MCS at the working sub-band up direction selectedULCorticofugal Modulation of Somatosensory encoding levels MCS with down directionDL；
According to up modulating-coding grade MCS obtainedULWith Corticofugal Modulation of Somatosensory encoding levels MCSDLMatching obtains the uplink signal-channel quality CSI of described working sub-band respectivelyULWith down channel quality CSIDL；
Judge the uplink signal-channel quality CSI of the working sub-band obtainedULWith down channel quality CSIDLWhether it is both greater than preset value CSIMIN, the most described working sub-band is put in sets of subbands to be selected, if it is not, then described working sub-band is put in severe sets of subbands.
Wherein, the method that the embodiment of the present invention provides can also carry out severe subband recovery every Preset Time, working sub-band in the most severe sets of subbands is often included in sets of subbands to be selected after Preset Time, the Preset Time of each working sub-band process can be identical, can also differ, this Preset Time and the other system in the frequency range of working sub-band place and the business characteristic of native system and networking situation are relevant, and concrete value can be obtained by networking performance emulation.
It should be noted that, the initial value of above-mentioned sets of subbands to be selected is all of working sub-band in system, before i.e. communication system starts to transmit business datum, all of working sub-band is defined as subband to be selected, after working sub-band is used for transmitting business datum, the channel quality of working sub-band can be obtained according to the modulating-coding grade matching of business, the most again the channel quality obtained is compared, such that it is able to judge that work at present subband is severe subband or subband to be selected with the threshold value preset.
Therefore, owing to working sub-band being divided into sets of subbands to be selected and severe sets of subbands according to channel quality during working sub-band transmission business, when there being service needed to transmit, from sets of subbands to be selected, preferentially select working sub-band, thus improve service transmission quality.
The embodiment of the present invention provides the system of selection of another kind of working sub-band, shown in Figure 1, after communication system initialization, and the selection of subband of starting working, comprise the following steps:
S100, to detect all of working sub-band in sets of subbands to be selected the most occupied, i.e. detect and sets of subbands to be selected the most also remains sub band resources, if the working sub-band in sets of subbands to be selected is the most occupied, then carry out step S200a, if the working sub-band in sets of subbands to be selected is the most occupied, then carry out step S200b；
It should be noted that when communication system initialization, all working subband that the initial value of sets of subbands to be selected is had by this communication system.
S200a, it is service selection working sub-band waiting for transmission in the middle of unappropriated working sub-band from sets of subbands to be selected；
It should be noted that the working sub-band in sets of subbands to be selected can be numbered, select working sub-band according to the numbering of working sub-band by order from small to large or from big to small.
S200b, it is service selection working sub-band waiting for transmission from severe sets of subbands；
Herein, working sub-band is selected can to select by order from small to large or from big to small according to the numbering of working sub-band from severe sets of subbands.
S300, calculate described business waiting for transmission in up modulating-coding grade MCS of working sub-band up direction selectedULCorticofugal Modulation of Somatosensory encoding levels MCS with down directionDL；
By the modulation coding information used in the business data transmission on record work at present subband, obtain business datum modulating-coding grade on work at present subband uplink and downlink direction.
S400, according to up modulating-coding grade MCSULMatching obtains the uplink signal-channel quality CSI of working sub-bandUL, according to Corticofugal Modulation of Somatosensory encoding levels MCSDLMatching obtains the down channel quality CSI of working sub-bandDL；
Above-mentioned uplink signal-channel quality CSIULWith down channel quality CSIDLIt is all the token state of the channel condition information of reflection working sub-band, can be by up modulating-coding grade MCSULWith Corticofugal Modulation of Somatosensory encoding levels MCSDLCarry out time smoothing respectively to obtain.
S500, judge uplink signal-channel quality CSIULWith down channel quality CSIDLWhether it is both greater than preset value CSIMINIf, uplink signal-channel quality CSIULWith down channel quality CSIDLBoth greater than preset value CSIMIN, then carry out step S600a, if uplink signal-channel quality CSIULWith down channel quality CSIDLIn at least one less than or equal to preset value CSIMIN, then step S600b is carried out；
Above-mentioned preset value CSIMINThe thresholding of the channel quality for defining severe subband for pre-setting.
S600a, work at present subband is included in sets of subbands to be selected.
S600b, work at present subband is included in severe sets of subbands.
Further, the working sub-band in severe sets of subbands can revert to subband to be selected through after a period of time, and this time can be configured in advance, can carry out value according to the networking situation of communication system, the business characteristic etc. of transmission.Each work in severe sets of subbands reverts to subband elapsed time to be selected can be identical, it is also possible to differs.
The embodiment of the present invention can also be that it arranges numbering according to all kinds of parameters of working sub-band, the height of the channel quality such as obtained according to matching is that working sub-band arranges numbering, when for service selection working sub-band waiting for transmission, select from sets of subbands to be selected or in severe sets of subbands by order from big to small or from small to large according to the numbering of working sub-band.
Therefore, the method that the embodiment of the present invention provides calculates business modulating-coding grade on working sub-band uplink/downlink direction, and the uplink/downlink channel quality of working sub-band is obtained by uplink/downlink modulating-coding grade matching, again uplink/downlink channel quality is compared with preset value, thus work at present subband is included into sets of subbands to be selected or severe sets of subbands, when there being service needed to transmit, work is preferentially selected to be transmitted from sets of subbands to be selected, this method provide the transmission quality of business, reduce the packet loss of business, transmission performance is significantly improved.
The embodiment of the present invention also provides for a kind of communication system, including:
Detector unit, the most occupied for detecting the working sub-band in sets of subbands to be selected；
Select unit, if detecting that the working sub-band in sets of subbands to be selected is the most occupied for described detector unit, it is then service selection working sub-band waiting for transmission in the middle of unappropriated working sub-band from sets of subbands to be selected, if described detector unit detects that the working sub-band in sets of subbands to be selected is the most occupied, then it is service selection working sub-band waiting for transmission from severe sets of subbands；
First computing unit, for calculating the described business waiting for transmission up modulating-coding grade MCS at the working sub-band up direction selectedULCorticofugal Modulation of Somatosensory encoding levels MCS with down directionDL；
Second computing unit, for according to described first calculated up modulating-coding grade MCS of computing unitULWith Corticofugal Modulation of Somatosensory encoding levels MCSDLMatching obtains the uplink signal-channel quality CSI of described working sub-band respectivelyULWith down channel quality CSIDL；
Judging unit, for judging the uplink signal-channel quality CSI that described second computing unit matching obtainsULWith down channel quality CSIDLWhether it is both greater than preset value CSIMIN, the most described working sub-band is put in sets of subbands to be selected, if it is not, then described working sub-band is put in severe sets of subbands.
Therefore, the first computing unit in the communication system that the embodiment of the present invention provides is calculated up modulating-coding grade and the Corticofugal Modulation of Somatosensory encoding levels of working sub-band, second computing unit respectively obtains uplink/downlink channel quality according to uplink/downlink modulating-coding grade, uplink/downlink channel quality and the threshold value preset are compared by judging unit again, thus obtaining working sub-band is severe subband or subband to be selected, when there being service needed to transmit, unit is selected preferentially to select working sub-band to be transmitted from subband to be selected, this communication system can be effectively improved its service transmission quality, reduce the packet loss of business, transmission performance is significantly improved.
The embodiment of the present invention provides another kind of communication system, shown in Figure 2, including:
Detector unit 201, the most occupied for detecting the working sub-band in sets of subbands to be selected；
It should be noted that detector unit 201 can be by the channel information of detection working sub-band such that it is able to obtain whether this working sub-band is taken by business, above-mentioned sets of subbands to be selected is the whole working sub-band in system when communication system initialization.
Select unit 202, result for obtaining according to detector unit 201 detection is service selection working sub-band waiting for transmission, if the working sub-band during detector unit 201 detects in sets of subbands to be selected is the most occupied, it is then to select working sub-band in the middle of the working sub-band idle from sets of subbands to be selected of business waiting for transmission, if detector unit 201 detects that the working sub-band in sets of subbands to be selected is the most occupied, then it is that business waiting for transmission selects working sub-band from severe sets of subbands.
First computing unit 203, for calculating the described business waiting for transmission up modulating-coding grade MCS at the working sub-band up direction selectedULCorticofugal Modulation of Somatosensory encoding levels MCS with down directionDL。
Second computing unit 204, for according to the first calculated up modulating-coding grade MCS of computing unit 203ULWith Corticofugal Modulation of Somatosensory encoding levels MCSDLMatching obtains the uplink signal-channel quality CSI of work at present subband respectivelyULWith down channel quality CSIDL；
It should be noted that the second computing unit 204 can be to up modulating-coding grade MCSULWith Corticofugal Modulation of Somatosensory encoding levels MCSDLCarry out time smoothing computing respectively and obtain the uplink signal-channel quality CSI of working sub-bandULWith down channel quality CSIDL。
Judging unit 205, for judging the uplink signal-channel quality CSI that the second computing unit 204 matching obtainsULWith down channel quality CSIDLWhether it is both greater than preset value CSIMIN, the most then work at present subband is included in sets of subbands to be selected, if it is not, then work at present subband is included in severe sets of subbands.
The communication system that the embodiment of the present invention provides can also include recovery unit, recovery unit is for making each working sub-band in severe sets of subbands be included into after Preset Time in sets of subbands to be selected, wherein, the Preset Time of each working sub-band process can be identical, it is also possible to differs；
Further, the communication system that the embodiment of the present invention provides can also include arranging unit, for according to the uplink signal-channel quality CSI obtained from the second computing unit 204ULWith down channel quality CSIDLArranging numbering for working sub-band, selecting unit 202 to be additionally operable to the numbering according to working sub-band is service selection working sub-band waiting for transmission by order from big to small or from small to large from sets of subbands to be selected or severe sets of subbands.
Therefore, the present embodiment obtains the channel quality of work at present subband by the first computing unit and the second computing unit matching, then work at present subband is included in sets of subbands to be selected or in severe sets of subbands by judging unit according to channel quality, when there being business datum to need transmission, unit is selected preferentially to select working sub-band to carry out business data transmission from sets of subbands to be selected, this communication system carries out the selection of subband according to the channel quality of working sub-band, improve the quality of working sub-band transmission business, reduce the packet loss of business, the performance of simultaneity factor is significantly improved.
System of selection and the communication system of a kind of working sub-band provided the embodiment of the present invention above are described in detail, principle and the embodiment of the present invention are set forth by specific case used herein, and the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention；Simultaneously for one of ordinary skill in the art, according to the thought of the present invention, the most all will change, in sum, this specification content should not be construed as limitation of the present invention.
Claims (6)
1. the system of selection of a working sub-band, it is characterised in that described method includes:
Detect the working sub-band in sets of subbands to be selected the most occupied, if not, it is then service selection working sub-band waiting for transmission in the middle of unappropriated working sub-band from sets of subbands to be selected, is the most then service selection working sub-band waiting for transmission from severe sets of subbands；
Calculate the described business waiting for transmission up modulating-coding grade MCS at the working sub-band up direction selectedULCorticofugal Modulation of Somatosensory encoding levels MCS with down directionDL；
According to up modulating-coding grade MCS obtainedULWith Corticofugal Modulation of Somatosensory encoding levels MCSDLMatching obtains the uplink signal-channel quality CSI of described working sub-band respectivelyULWith down channel quality CSIDL；
Judge the uplink signal-channel quality CSI of the working sub-band obtainedULWith down channel quality CSIDLWhether it is both greater than preset value CSIMIN, the most described working sub-band is put in sets of subbands to be selected, if it is not, then described working sub-band is put in severe sets of subbands；
Each working sub-band in severe sets of subbands is included in sets of subbands to be selected after Preset Time, and wherein, the Preset Time of each working sub-band process can be identical, it is also possible to differs.
System of selection the most according to claim 1, it is characterised in that described up modulating-coding grade MCS according to working sub-bandULWith Corticofugal Modulation of Somatosensory encoding levels MCSDLMatching obtains the uplink signal-channel quality CSI of described working sub-band respectivelyULWith down channel quality CSIDLSpecifically include:
Up modulating-coding grade MCS to described working sub-bandULWith Corticofugal Modulation of Somatosensory encoding levels MCSDLCarrying out time smoothing computing respectively, acquired results is respectively the uplink signal-channel quality CSI of described working sub-bandULWith down channel quality CSIDL。
System of selection the most according to claim 1, it is characterised in that described method also includes:
Uplink signal-channel quality CSI according to working sub-bandULWith down channel quality CSIDLNumbering is set for working sub-band, when for service selection working sub-band waiting for transmission, selects working sub-band by order from big to small or from small to large from sets of subbands to be selected or in severe sets of subbands according to the numbering of working sub-band.
4. a communication system, it is characterised in that including:
Detector unit, the most occupied for detecting the working sub-band in sets of subbands to be selected；
Select unit, if detecting that the working sub-band in sets of subbands to be selected is the most occupied for described detector unit, it is then service selection working sub-band waiting for transmission in the middle of unappropriated working sub-band from sets of subbands to be selected, if described detector unit detects that the working sub-band in sets of subbands to be selected is the most occupied, then it is service selection working sub-band waiting for transmission from severe sets of subbands；
First computing unit, for calculating the described business waiting for transmission up modulating-coding grade MCS at the working sub-band up direction selectedULCorticofugal Modulation of Somatosensory encoding levels MCS with down directionDL；
Second computing unit, for according to described first calculated up modulating-coding grade MCS of computing unitULWith Corticofugal Modulation of Somatosensory encoding levels MCSDLMatching obtains the uplink signal-channel quality CSI of described working sub-band respectivelyULWith down channel quality CSIDL；
Judging unit, for judging the uplink signal-channel quality CSI that described second computing unit matching obtainsULWith down channel quality CSIDLWhether it is both greater than preset value CSIMIN, the most described working sub-band is put in sets of subbands to be selected, if it is not, then described working sub-band is put in severe sets of subbands；
Recovery unit, for making each working sub-band in severe sets of subbands be included into after Preset Time in sets of subbands to be selected, wherein, the Preset Time of each working sub-band process can be identical, it is also possible to differs.
Communication system the most according to claim 4, it is characterised in that up modulating-coding grade MCS that described second computing unit will obtain from the first computing unitULWith Corticofugal Modulation of Somatosensory encoding levels MCSDLCarry out time smoothing computing respectively, thus respectively obtain the uplink signal-channel quality CSI of described working sub-bandULWith down channel quality CSIDL。
Communication system the most according to claim 4, it is characterised in that described communication system also includes arranging unit, for according to the uplink signal-channel quality CSI obtained from the second computing unitULWith down channel quality CSIDLFor working sub-band, numbering is set；
Described selection unit is service selection working sub-band waiting for transmission for the order pressed according to the numbering of working sub-band from big to small or from small to large from sets of subbands to be selected or severe sets of subbands.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6721569B1 (en) * | 2000-09-29 | 2004-04-13 | Nortel Networks Limited | Dynamic sub-carrier assignment in OFDM systems |
| CN101958767A (en) * | 2010-10-22 | 2011-01-26 | 北京北方烽火科技有限公司 | Frequency domain resource scheduling method and device |
| CN102064908A (en) * | 2009-11-18 | 2011-05-18 | 中兴通讯股份有限公司 | Method and terminal for classified feedback of quality information of sub-band channel on total bandwidth |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6721569B1 (en) * | 2000-09-29 | 2004-04-13 | Nortel Networks Limited | Dynamic sub-carrier assignment in OFDM systems |
| CN102064908A (en) * | 2009-11-18 | 2011-05-18 | 中兴通讯股份有限公司 | Method and terminal for classified feedback of quality information of sub-band channel on total bandwidth |
| CN101958767A (en) * | 2010-10-22 | 2011-01-26 | 北京北方烽火科技有限公司 | Frequency domain resource scheduling method and device |
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