CN103595498A - A method for selecting an operating sub-band and a communication system - Google Patents
A method for selecting an operating sub-band and a communication system Download PDFInfo
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- CN103595498A CN103595498A CN201210287587.XA CN201210287587A CN103595498A CN 103595498 A CN103595498 A CN 103595498A CN 201210287587 A CN201210287587 A CN 201210287587A CN 103595498 A CN103595498 A CN 103595498A
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Abstract
The invention discloses a method for selecting an operating sub-band. According to the modulation coding grades of service in the uplink direction and the downlink direction of the operating sub-band, the uplink channel quality and the downlink channel quality of the operating sub-band are respectively obtained through the method in a fitting manner, and then the uplink channel quality and the downlink channel quality are respectively compared with a preset value so as to put a current operating sub-band into a sub-band set to be selected or a severe sub-band set. When business is required to be transmitted, a sub-band is preferentially selected from the sub-band set to be selected in order to perform transmission. The method effectively enhances business transmission quality and decreases the packet loss ratio of the service.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of system of selection and communication system of working sub-band.
Background technology
In wireless communication system, when variations, link adaptation techniques transmits adopted modulation coding mode by adjustment and promotes transmission performance, guarantees transmission quality.Under the mechanism of shared channel, it is its Resources allocation that network side need to carry out notification terminal by control channel, in the situation that resource is more nervous, for reserved more resource is to Traffic Channel, need to reduce the expense of control channel as far as possible, for example can adopt 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, also may have the interference from different system.Existing wireless communication system is divided into a plurality of continuous or discrete working sub-band by usable spectrum, system is carried out serial number by all subbands, when having user to need service data transmission, according to the numbering of working sub-band order from big to small or from small to large, be user assignment working sub-band.In existing wireless communication system, system is user assignment working sub-band at random or is followed successively by traffic assignments working sub-band according to the numbering of working sub-band, this method is not considered the division feature of subband in system and the channel quality of subband, when this just may cause user to work in working sub-band, business packet loss increases, QoS is not being met, and more serious situation can bring business transmission cannot go on and must discharge current working sub-band.
Summary of the invention
The embodiment of the present invention provides a kind of system of selection and communication system of working sub-band, to being traffic assignments working sub-band according to the channel quality of working sub-band.
For solving the problems of the technologies described above, embodiment provided by the present invention is achieved through the following technical solutions.
A system of selection for working sub-band, comprising:
Whether the working sub-band detecting in sets of subbands to be selected is all occupied, if not, from sets of subbands to be selected, in the middle of unappropriated working sub-band, be service selection working sub-band waiting for transmission, be if so, service selection working sub-band waiting for transmission from severe sets of subbands;
Calculate described business waiting for transmission at the up modulating-coding grade MCS of the working sub-band up direction of selecting
uLcorticofugal Modulation of Somatosensory coding grade MCS with down direction
dL;
According to the up modulating-coding grade MCS obtaining
uLwith Corticofugal Modulation of Somatosensory coding grade MCS
dLmatching obtains the uplink signal-channel quality CSI of described working sub-band respectively
uLwith down channel quality CSI
dL;
The uplink signal-channel quality CSI of the working sub-band that judgement obtains
uLwith down channel quality CSI
dLwhether be all greater than preset value CSI
mIN, if so, described working sub-band is put into sets of subbands to be selected, if not, described working sub-band is put into severe sets of subbands.
, comprising:
Detecting unit, whether all occupied for detection of the working sub-band in sets of subbands to be selected;
Selected cell, if the working sub-band of sets of subbands to be selected detected for described detecting unit all not occupied, it from sets of subbands to be selected, in the middle of unappropriated working sub-band, is service selection working sub-band waiting for transmission, if the working sub-band that described detecting unit detects in sets of subbands to be selected is all occupied, it from severe sets of subbands, is service selection working sub-band waiting for transmission;
The first computing unit, for calculating described business waiting for transmission at the up modulating-coding grade MCS of the working sub-band up direction of selecting
uLcorticofugal Modulation of Somatosensory coding grade MCS with down direction
dL;
The second computing unit, for the up modulating-coding grade MCS calculating according to described the first computing unit
uLwith Corticofugal Modulation of Somatosensory coding grade MCS
dLmatching obtains the uplink signal-channel quality CSI of described working sub-band respectively
uLwith down channel quality CSI
dL;
Judging unit, for the uplink signal-channel quality CSI that judges that described the second computing unit matching obtains
uLwith down channel quality CSI
dLwhether be all greater than preset value CSI
mIN, if so, described working sub-band is put into sets of subbands to be selected, if not, described working sub-band is put into severe sets of subbands.
From technique scheme, can find out, the embodiment of the present invention adopts according to business the modulating-coding grade in 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 and preset value are compared, thereby obtain working sub-band, be severe subband or subband to be selected, when having service needed transmission, preferentially from sets of subbands to be selected, select working sub-band to transmit, can effectively promote the transmission quality of its business, reduce the packet loss of business, and improved the performance of system.
Accompanying drawing explanation
Fig. 1 is the basic procedure schematic diagram of the working sub-band system of selection that provides of the embodiment of the present invention;
Fig. 2 is the structural representation of the communication system that provides of the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of system of selection and communication system of working sub-band, according to the difference of working sub-band channel quality, working sub-band is divided into subband to be selected and severe subband, when being service selection working sub-band, preferentially from sets of subbands to be selected, selects.
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, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The system of selection of a kind of the working sub-band first embodiment of the present invention being provided describes.The system of selection of a kind of working sub-band that the embodiment of the present invention provides comprises the following steps:
Whether the working sub-band detecting in sets of subbands to be selected is all occupied, if not, from sets of subbands to be selected, in the middle of unappropriated working sub-band, be service selection working sub-band waiting for transmission, be if so, service selection working sub-band waiting for transmission from severe sets of subbands;
Calculate described business waiting for transmission at the up modulating-coding grade MCS of the working sub-band up direction of selecting
uLcorticofugal Modulation of Somatosensory coding grade MCS with down direction
dL;
According to the up modulating-coding grade MCS obtaining
uLwith Corticofugal Modulation of Somatosensory coding grade MCS
dLmatching obtains the uplink signal-channel quality CSI of described working sub-band respectively
uLwith down channel quality CSI
dL;
The uplink signal-channel quality CSI of the working sub-band that judgement obtains
uLwith down channel quality CSI
dLwhether be all greater than preset value CSI
mIN, if so, described working sub-band is put into sets of subbands to be selected, if not, described working sub-band is put into severe sets of subbands.
Wherein, the method that the embodiment of the present invention provides can also be carried out severe subband recovery every Preset Time, be every being included into after Preset Time in sets of subbands to be selected of working sub-band in severe sets of subbands, the Preset Time of each working sub-band process can be identical, can be not identical yet, this Preset Time is relevant with business characteristic and the networking situation of other system in the frequency range of working sub-band place and native system, and concrete value can obtain by networking performance emulation.
It should be noted that, the initial value of above-mentioned sets of subbands to be selected is working sub-band all in system, be before communication system starts service data transmission, all working sub-band are defined as subband to be selected, when working sub-band is for after service data transmission, can obtain according to the modulating-coding grade matching of business the channel quality of working sub-band, and then the channel quality obtaining and default threshold value are compared, thereby can judge that work at present subband is severe subband or subband to be selected.
Therefore, channel quality when according to working sub-band transport service is divided into sets of subbands to be selected and severe sets of subbands by working sub-band, when having service needed transmission, preferentially from sets of subbands to be selected, select working sub-band, thereby improved 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, and after communication system initialization, the selection of the subband of starting working, comprises the following steps:
Whether S100, to detect working sub-band all in sets of subbands to be selected all occupied, detect and in sets of subbands to be selected, whether remain in addition sub band resources, if the working sub-band in sets of subbands to be selected is all not occupied, carry out step S200a, if the working sub-band in sets of subbands to be selected is all occupied, 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 has for this communication system.
S200a, from sets of subbands to be selected, in the middle of unappropriated working sub-band, be service selection working sub-band waiting for transmission;
It should be noted that, can the working sub-band in sets of subbands to be selected be numbered, according to the numbering of working sub-band, press selective sequential working sub-band from small to large or from big to small.
S200b, from severe sets of subbands, be service selection working sub-band waiting for transmission;
From severe sets of subbands, select the working sub-band can be according to the numbering of working sub-band by selective sequential from small to large or from big to small herein.
S300, calculate described business waiting for transmission at the up modulating-coding grade MCS of the working sub-band up direction of selecting
uLcorticofugal Modulation of Somatosensory coding grade MCS with down direction
dL;
By recording the modulation coding information adopting in the business data transmission on work at present subband, obtain the modulating-coding grade of business datum in work at present subband uplink and downlink direction.
S400, according to up modulating-coding grade MCS
uLmatching obtains the uplink signal-channel quality CSI of working sub-band
uL, according to Corticofugal Modulation of Somatosensory coding grade MCS
dLmatching obtains the down channel quality CSI of working sub-band
dL;
Above-mentioned uplink signal-channel quality CSI
uLwith down channel quality CSI
dLbe all the sign amount of the channel condition information of reflection working sub-band, can pass through up modulating-coding grade MCS
uLwith Corticofugal Modulation of Somatosensory coding grade MCS
dLcarrying out respectively time smoothing obtains.
S500, judgement uplink signal-channel quality CSI
uLwith down channel quality CSI
dLwhether be all greater than preset value CSI
mINif, uplink signal-channel quality CSI
uLwith down channel quality CSI
dLall be greater than preset value CSI
mIN, carry out step S600a, if uplink signal-channel quality CSI
uLwith down channel quality CSI
dLin have at least one to be less than or equal to preset value CSI
mIN, carry out step S600b;
Above-mentioned preset value CSI
mINfor being used for of setting in advance defines the thresholding of the channel quality of severe subband.
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 arrange in advance, can carry out value according to the networking situation of communication system, the business characteristic of transmission etc.Each work in severe sets of subbands reverts to subband to be selected institute elapsed time can be identical, also can be not identical.
The embodiment of the present invention can also arrange numbering for it according to all kinds of parameters of working sub-band, the height of the channel quality for example obtaining according to matching is that working sub-band arranges numbering, when being service selection working sub-band waiting for transmission, according to the numbering of 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, select.
Therefore, the modulating-coding grade of the method computing service that the embodiment of the present invention provides on working sub-band up/down line direction, and by the matching of up/down row modulating-coding grade, obtained the up/down row channel quality of working sub-band, again up/down row channel quality and preset value are compared, thereby work at present subband is included into sets of subbands to be selected or severe sets of subbands, when having service needed transmission, preferentially from sets of subbands to be selected, selection work is transmitted, the method provides the transmission quality of business, reduced the packet loss of business, transmission performance is significantly improved.
The embodiment of the present invention also provides a kind of communication system, comprising:
Detecting unit, whether all occupied for detection of the working sub-band in sets of subbands to be selected;
Selected cell, if the working sub-band of sets of subbands to be selected detected for described detecting unit all not occupied, it from sets of subbands to be selected, in the middle of unappropriated working sub-band, is service selection working sub-band waiting for transmission, if the working sub-band that described detecting unit detects in sets of subbands to be selected is all occupied, it from severe sets of subbands, is service selection working sub-band waiting for transmission;
The first computing unit, for calculating described business waiting for transmission at the up modulating-coding grade MCS of the working sub-band up direction of selecting
uLcorticofugal Modulation of Somatosensory coding grade MCS with down direction
dL;
The second computing unit, for the up modulating-coding grade MCS calculating according to described the first computing unit
uLwith Corticofugal Modulation of Somatosensory coding grade MCS
dLmatching obtains the uplink signal-channel quality CSI of described working sub-band respectively
uLwith down channel quality CSI
dL;
Judging unit, for the uplink signal-channel quality CSI that judges that described the second computing unit matching obtains
uLwith down channel quality CSI
dLwhether be all greater than preset value CSI
mIN, if so, described working sub-band is put into sets of subbands to be selected, if not, described working sub-band is put into severe sets of subbands.
Therefore, the first computing unit in the communication system that the embodiment of the present invention provides calculates up modulating-coding grade and the Corticofugal Modulation of Somatosensory coding grade of working sub-band, the second computing unit obtains respectively uplink/downlink channel quality according to uplink/downlink modulating-coding grade, judging unit compares uplink/downlink channel quality and default threshold value again, thereby obtain working sub-band, be severe subband or subband to be selected, when having service needed transmission, selected cell preferentially selects working sub-band to transmit from subband to be selected, this communication system can effectively improve its service transmission quality, reduced 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, comprising:
Detecting unit 201, whether all occupied for detection of the working sub-band in sets of subbands to be selected;
Whether it should be noted that by business, taken thereby detecting unit 201 can obtain this working sub-band by the channel information of testing subband, above-mentioned sets of subbands to be selected is the whole working sub-band in system when communication system initialization.
Selected cell 202, for detecting according to detecting unit 201 result obtaining, it is service selection working sub-band waiting for transmission, if detecting unit 201 detect in sets of subbands to be selected in working sub-band all not occupied, for selecting working sub-band in the middle of the business waiting for transmission working sub-band of free time from sets of subbands to be selected, if the working sub-band that detecting unit 201 detects in sets of subbands to be selected is all occupied, for business waiting for transmission, from severe sets of subbands, select working sub-band.
The first computing unit 203, for calculating described business waiting for transmission at the up modulating-coding grade MCS of the working sub-band up direction of selecting
uLcorticofugal Modulation of Somatosensory coding grade MCS with down direction
dL.
The second computing unit 204, for the up modulating-coding grade MCS calculating according to the first computing unit 203
uLwith Corticofugal Modulation of Somatosensory coding grade MCS
dLmatching obtains the uplink signal-channel quality CSI of work at present subband respectively
uLwith down channel quality CSI
dL;
It should be noted that, the second computing unit 204 can be to up modulating-coding grade MCS
uLwith Corticofugal Modulation of Somatosensory coding grade MCS
dLcarry out respectively time smoothing computing and obtain the uplink signal-channel quality CSI of working sub-band
uLwith down channel quality CSI
dL.
Judging unit 205, for the uplink signal-channel quality CSI that judges that the second computing unit 204 matchings obtain
uLwith down channel quality CSI
dLwhether be all greater than preset value CSI
mIN, if so, work at present subband is included in sets of subbands to be selected, if not, work at present subband is included in severe sets of subbands.
The communication system that the embodiment of the present invention provides can also comprise recovery unit, recovery unit for being included in sets of subbands to be selected each working sub-band of severe sets of subbands after Preset Time, wherein, the Preset Time of each working sub-band process can be identical, also can be not identical;
Further, the communication system that the embodiment of the present invention provides can also comprise setting unit, the uplink signal-channel quality CSI obtaining from the second computing unit 204 for basis
uLwith down channel quality CSI
dLfor working sub-band arranges numbering, selected cell 202 is also service selection working sub-band waiting for transmission for the order of pressing 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.
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 judging unit is included in sets of subbands to be selected or in severe sets of subbands according to channel quality by work at present subband, when having business datum to transmit, selected cell preferentially selects working sub-band to carry out business data transmission from sets of subbands to be selected, this communication system is carried out the selection of subband according to the channel quality of working sub-band, improved the quality of working sub-band transport service, reduced the packet loss of business, the performance of simultaneity factor is significantly improved.
System of selection and the communication system of a kind of the working sub-band above embodiment of the present invention being provided are described in detail, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (8)
1. a system of selection for working sub-band, is characterized in that, described method comprises:
Whether the working sub-band detecting in sets of subbands to be selected is all occupied, if not, from sets of subbands to be selected, in the middle of unappropriated working sub-band, be service selection working sub-band waiting for transmission, be if so, service selection working sub-band waiting for transmission from severe sets of subbands;
Calculate described business waiting for transmission at the up modulating-coding grade MCS of the working sub-band up direction of selecting
uLcorticofugal Modulation of Somatosensory coding grade MCS with down direction
dL;
According to the up modulating-coding grade MCS obtaining
uLwith Corticofugal Modulation of Somatosensory coding grade MCS
dLmatching obtains the uplink signal-channel quality CSI of described working sub-band respectively
uLwith down channel quality CSI
dL;
The uplink signal-channel quality CSI of the working sub-band that judgement obtains
uLwith down channel quality CSI
dLwhether be all greater than preset value CSI
mIN, if so, described working sub-band is put into sets of subbands to be selected, if not, described working sub-band is put into severe sets of subbands.
2. system of selection according to claim 1, is characterized in that, described method also comprises:
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, also can be not identical.
3. system of selection according to claim 1, is characterized in that, described according to the up modulating-coding grade MCS of working sub-band
uLwith Corticofugal Modulation of Somatosensory coding grade MCS
dLmatching obtains the uplink signal-channel quality CSI of described working sub-band respectively
uLwith down channel quality CSI
dLspecifically comprise:
Up modulating-coding grade MCS to described working sub-band
uLwith Corticofugal Modulation of Somatosensory coding grade MCS
dLcarry out respectively time smoothing computing, acquired results is respectively the uplink signal-channel quality CSI of described working sub-band
uLwith down channel quality CSI
dL.
4. system of selection according to claim 1, is characterized in that, described method also comprises:
According to the uplink signal-channel quality CSI of working sub-band
uLwith down channel quality CSI
dLfor working sub-band arranges numbering, when being service selection working sub-band waiting for transmission, according to the numbering of 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, select working sub-band.
5. a communication system, is characterized in that, comprising:
Detecting unit, whether all occupied for detection of the working sub-band in sets of subbands to be selected;
Selected cell, if the working sub-band of sets of subbands to be selected detected for described detecting unit all not occupied, it from sets of subbands to be selected, in the middle of unappropriated working sub-band, is service selection working sub-band waiting for transmission, if the working sub-band that described detecting unit detects in sets of subbands to be selected is all occupied, it from severe sets of subbands, is service selection working sub-band waiting for transmission;
The first computing unit, for calculating described business waiting for transmission at the up modulating-coding grade MCS of the working sub-band up direction of selecting
uLcorticofugal Modulation of Somatosensory coding grade MCS with down direction
dL;
The second computing unit, for the up modulating-coding grade MCS calculating according to described the first computing unit
uLwith Corticofugal Modulation of Somatosensory coding grade MCS
dLmatching obtains the uplink signal-channel quality CSI of described working sub-band respectively
uLwith down channel quality CSI
dL;
Judging unit, for the uplink signal-channel quality CSI that judges that described the second computing unit matching obtains
uLwith down channel quality CSI
dLwhether be all greater than preset value CSI
mIN, if so, described working sub-band is put into sets of subbands to be selected, if not, described working sub-band is put into severe sets of subbands.
6. communication system according to claim 5, it is characterized in that, described communication system also comprises recovery unit, for each working sub-band of severe sets of subbands is included in sets of subbands to be selected after Preset Time, wherein, the Preset Time of each working sub-band process can be identical, also can be not identical.
7. communication system according to claim 5, is characterized in that, described the second computing unit is by the up modulating-coding grade MCS obtaining from the first computing unit
uLwith Corticofugal Modulation of Somatosensory coding grade MCS
dLcarry out respectively time smoothing computing, thereby obtain respectively the uplink signal-channel quality CSI of described working sub-band
uLwith down channel quality CSI
dL.
8. communication system according to claim 5, is characterized in that, described communication system also comprises setting unit, the uplink signal-channel quality CSI obtaining from the second computing unit for basis
uLwith down channel quality CSI
dLfor working sub-band arranges numbering;
Described selected cell is service selection working sub-band waiting for transmission for the order of pressing 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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| CN108337732A (en) * | 2017-01-20 | 2018-07-27 | 大唐移动通信设备有限公司 | A kind of upper line frequency selection scheduling method and device |
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| US6721569B1 (en) * | 2000-09-29 | 2004-04-13 | Nortel Networks Limited | Dynamic sub-carrier assignment in OFDM systems |
| CN102064908B (en) * | 2009-11-18 | 2014-02-19 | 中兴通讯股份有限公司南京分公司 | Method and terminal for classified feedback of quality information of sub-band channel on total bandwidth |
| CN101958767B (en) * | 2010-10-22 | 2013-03-13 | 北京北方烽火科技有限公司 | Frequency domain resource scheduling method and device |
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| CN108337732A (en) * | 2017-01-20 | 2018-07-27 | 大唐移动通信设备有限公司 | A kind of upper line frequency selection scheduling method and device |
| CN108337732B (en) * | 2017-01-20 | 2020-07-21 | 大唐移动通信设备有限公司 | Uplink frequency selection scheduling method and device |
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