CN102655679B - Descending sendaisle system of selection, base station and indoor distributed system - Google Patents
Descending sendaisle system of selection, base station and indoor distributed system Download PDFInfo
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- CN102655679B CN102655679B CN201110050045.6A CN201110050045A CN102655679B CN 102655679 B CN102655679 B CN 102655679B CN 201110050045 A CN201110050045 A CN 201110050045A CN 102655679 B CN102655679 B CN 102655679B
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- 238000012805 post-processing Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The present invention provides descending sendaisle system of selection, base station and indoor distributed system. The method comprises: data feedback channel is carried out channel estimating, obtains the power in each bar footpath of described data feedback channel; The power in described each bar footpath and the threshold value preset are compared, knows to have at least the power in a footpath to be not less than described threshold value if comparing, then described data feedback channel is designated as effective passage; Calculate the dry ratio of minimum load of the described effective passage enabling receiving end meet default signal-to-noise target value; Calculate the dry ratio of load of described effective passage, know that described load is dry than being greater than the dry ratio of described minimum load if comparing, then described effective passage is designated as and reaches working point stator channel; Repeat above-mentioned steps, until each data feedback channel of traversal user; What the power of selection user was the strongest reaches working point stator channel as descending sendaisle. The accuracy rate height of the descending sendaisle system of selection of the present invention, base station and the descending sendaisle of indoor distributed system selecting properly.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of descending sendaisle system of selection, base station and indoor distributed system.
Background technology
In TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) (TimeDivision-SynchronousCodeDivisionMultipleAccess is called for short TD-SCDMA) indoor distributed system, the code resource that all channels share are same. When carrying out downlink data transmission for certain user, all Baseband Channels can issue the data for this user simultaneously, due to the isolation of the floor of indoor, wall etc., the signal resulting through some channel emission has very big decay, therefore needs to select suitable descending sendaisle to improve system efficiency.
In prior art, base station selects channel that user power is the strongest as descending sendaisle usually. Due to when selecting descending sendaisle, passage need to be carried out channel estimating to carry out channel compensation at receiving end, but owing to the interference of different passage is different, such as when certain passage has very serious interference, power error after user's channel estimating on that channel will be very big, it is possible to is mistaken as and has most high power on that channel. If now the real ownership passage (namely most high power passage) of user is not this passage, then down going channel selects mistake, thus the user giving other channels brings interference, influential system performance.
Summary of the invention
For above-mentioned defect, the present invention provides descending sendaisle system of selection, base station and indoor distributed system, selects to realize the descending sendaisle of split hair caccuracy.
Descending sendaisle system of selection provided by the invention, comprising:
Step 1, carries out channel estimating to data feedback channel, obtains the power in each bar footpath of described data feedback channel;
Step 2, compares the power in described each bar footpath and the threshold value preset, knows to have at least the power in a footpath to be not less than described threshold value if comparing, then described data feedback channel is designated as effective passage;
Step 3, calculates the dry ratio of minimum load of the described effective passage enabling receiving end meet default signal-to-noise target value;
Step 4, calculates the dry ratio of load of described effective passage, knows that described load is dry than being greater than the dry ratio of described minimum load if comparing, is then designated as by described effective passage and reaches working point stator channel;
Step 5, repeated execution of steps 1-4, until each data feedback channel of traversal user;
Step 6, what the power of selection user was the strongest reaches working point stator channel as descending sendaisle.
Base station provided by the invention, comprising:
Power acquisition module, for data feedback channel is carried out channel estimating, obtains the power in each bar footpath of described data feedback channel;
Efficiency assessment module, for the power in described each bar footpath and the threshold value preset being compared, knows to have at least the power in a footpath to be not less than described threshold value if comparing, then described data feedback channel is designated as effective passage;
Calculate module, do ratio for calculating the minimum load of the described effective passage enabling receiving end meet default signal-to-noise target value;
If comparing, working point state estimation module, for the dry ratio that calculates the load of described effective passage, knows that described load is dry than being greater than the dry ratio of described minimum load, is then designated as by described effective passage and reaches working point stator channel;
Channel selecting module, for select the power of user the strongest reach working point stator channel as descending sendaisle.
According to a further aspect in the invention, additionally providing a kind of indoor distributed system, this system comprises the base station of at least one user and the present invention.
Descending sendaisle system of selection according to the present invention, base station and indoor distributed system, due to by data feedback channel is carried out channel estimating, assessment path validity and working point state, and only when existence reaches working point stator channel according to most high power principle to select descending sendaisle, it is possible to avoid the severe jamming because passage exists and cause thinking by mistake that this passage has most high power, so that it is guaranteed that real ownership passage can be selected when selecting the most by force according to selection power, what greatly reduce descending sendaisle falsely drops rate, reduce the system performance caused because falsely dropping descending sendaisle to reduce.
Accompanying drawing explanation
Fig. 1 is the schema of the descending sendaisle system of selection of the present invention.
Fig. 2 is the schema that base station performs the descending sendaisle method of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the technical scheme of the present invention is clearly and completely described.
Fig. 1 is the schema of the descending sendaisle system of selection of the present invention. As shown in Figure 1, this descending sendaisle system of selection comprises:
Step 1, carries out channel estimating to data feedback channel, obtains the power in each bar footpath of described data feedback channel;
Specifically, signal amplitude decline and phase distortion can be there is due to signal after radio channel transmits, so TD-SCDMA system uplink data is after base station is received by antenna, channel estimating need to be carried out, to obtain channel impulse response, thus the signal received is compensated. The method that this data feedback channel carries out channel estimating can take any channel estimation methods of the prior art, such as, for adopting B.Steiner channel estimating model.
Step 2, compares the power in described each bar footpath and the threshold value preset, knows to have at least the power in a footpath to be not less than described threshold value if comparing, then described data feedback channel is designated as effective passage;
Specifically, setting channel post-processing thresholding, and according to this channel post-processing thresholding, the channel estimation results (i.e. the power in each bar footpath of channel) of all enable passage of active user is carried out channel estimating aftertreatment.More specifically, this channel post-processing thresholding can be set according to measuring the channels interference power obtained, the power in each bar footpath of the data feedback channel obtained after data feedback channel is carried out channel estimating and this threshold value are compared: if the power in footpath is more than or equal to this threshold value, then retain; If the power in footpath is less than this threshold value, then clear 0. The noise in channel estimating can be removed by this channel post-processing. After the current passage of user is carried out channel estimating aftertreatment, if active user has at least the power in a footpath to be more than or equal to this threshold value in many footpaths on this data feedback channel, namely after carrying out channel estimating aftertreatment, the channel estimating of this passage still comprises the footpath power that power is not zero, then this data feedback channel is designated as an effective passage of active user. If the power in the whole footpaths of active user on this data feedback channel is all less than this threshold value, then this passage is designated as the non-valid channel of active user.
Step 3, calculates the dry ratio of minimum load of the described effective passage enabling receiving end meet default signal to noise ratio (SignaltoNoiseRatio is called for short SNR) target value;
Specifically, select target misses the working point of block rate (BlockErrorRatio is called for short BLER) as reference working point, wherein, when working point refers to that receiving end demodulating data performance can meet the requirement of SNR target value, the load of corresponding channel estimating aftertreatment is dry compares minimum value. This load is dry normally to be calculated according to factors such as expanding gain frequently, receiving end signal to noise ratio, channel estimation gains and diversity gain than minimum value. Such as under the SNR of the working point meeting BLER requires (being namely not more than default SNR target value), the corresponding relation of dry ratio is downloaded according to Gauss channel, and after removing antenna diversity gain, calculate the value that minimum load corresponding to channel estimation results does ratio, as working point threshold value, being designated as Workpoint_thr, unit is dB. Such as: minimum load does ratio=SNR target value+channel estimation gains-expansion gain-gain of antenna frequently, and even SNR target value is 7dB, and expanding gain frequently is 12dB, and channel estimation gains is 21dB, and gain of antenna is 3dB, then minimum load is dry than being 13dB.
Step 4, calculates the dry ratio of load of described effective passage, knows that described load is dry than being greater than the dry ratio of described minimum load if comparing, is then designated as by described effective passage and reaches working point stator channel;
Specifically, the effective passage obtained in step 2 is carried out working point condition adjudgement. Namely only when the current passage of user is effective passage, obtain this passage carry out channel estimating after each bar footpath power in maximum value (being designated as C), and obtain the interfering noise power (being designated as I) of current passage, dry than (being designated as C/I) by the footpath power/interference noise power of channel being obtained the load of this passage. By dry for the load of this passage than compared with the working point threshold value of the passage calculated in step 3, if C/I is greater than Workpoint_thr, then think that the current passage of this user is in " reaching working point " state, this passage is designated as and reaches working point stator channel; If C/I is less than or equals Workpoint_thr, then think that the current passage of this user is in " not reaching working point " state, this passage is designated as and does not reach working point stator channel.
Step 5, repeated execution of steps 1-4, until each data feedback channel of traversal user;
Specifically, whole data feedback channels of this user are all performed above-mentioned steps 1-4, namely judge whether each passage is effective passage, if effective passage, also need to judge that whether it is for reaching working point stator channel.
Step 6, what the power of selection user was the strongest reaches working point stator channel as descending sendaisle.
Specifically, after performing step 5, the state of whole passages of active user can be known, if in multiple passages of this user, exist and reach working point stator channel, then in the passage set reaching working point stator channel, find out the strongest passage of power (such as comparing the maximum diameter power of each channel), as descending sendaisle.
Descending sendaisle system of selection according to above-described embodiment, be disturbed due to the actual ownership passage (i.e. real descending sendaisle) of user be usually disturbed than non-attribution passage little, in the method, compare, with the threshold value preset, the validity judging passage by the footpath power after data feedback channel is carried out channel estimating, the minimum load enabling receiving end meet default signal-to-noise target value by arranging is done than as working point threshold value, judge the working point state of effective passage, and working point stator channel is selected passage that power is the strongest as descending sendaisle being confirmed as reaching of user, namely the state of passage is determined according to uplink signal-channel quality, and only select descending sendaisle for reaching working point stator channel according to the power intensity of passage, the severe jamming because passage exists can be avoided and cause thinking by mistake that this passage has most high power, so that it is guaranteed that real ownership passage can be selected when selecting the most by force according to selection power, what greatly reduce descending sendaisle falsely drops rate, reduce the system performance caused because falsely dropping descending sendaisle to reduce.
Further, in the descending sendaisle system of selection of above-described embodiment, also comprise after step 6:
Step 7, if whole data feedback channels of user are not all reach working point stator channel, then selects load to do than maximum effective passage as descending sendaisle. Data feedback channel is specifically, after whole data feedback channels of user are carried out validity and working point condition adjudgement, if the data feedback channel of this user having at least a passage be effective passage, but these effective passages are and do not reach working point stator channel, then select the passage in these effective passages with max carrier to interference as descending sendaisle.
Descending sendaisle system of selection according to above-described embodiment, due to when the passage of user does not exist reach working point stator channel time, max carrier to interference according to effective passage selects descending sendaisle, instead of select according to most high power, that can greatly reduce descending sendaisle falsely drops rate, thus reduce the system performance caused because falsely dropping descending sendaisle and reduce (such as descending power lifting, other users interference is increased the weight of, causes the descending step-out of this user etc.).
Further, in the descending sendaisle system of selection of above-described embodiment, also comprise after step 6:
Step 8, if whole data feedback channels of user are not all effective passages, then selects previous descending sendaisle as descending sendaisle.
Specifically, after whole data feedback channels of user are carried out validity and working point condition adjudgement, if the data feedback channel of this user is non-valid channel, then do not reselect new descending sendaisle, adopt the previous descending sendaisle that uses when carrying out descending transmission.
The descending sendaisle method of above-described embodiment is realized by the base station in indoor distributed system. Fig. 2 is the schema that base station performs the descending sendaisle method of the present invention. As shown in Figure 2, base station performs following step:
Step S1, carries out channel estimating to obtain channel estimation results to the data feedback channel of user;
Step S2, judges whether to exist in the data feedback channel of this user effective passage according to channel estimation results: if existing, then perform step S3; If not existing, then perform step S6;
Step S3, judges whether effective passage reaches working point state: if reaching working point state, then perform step S4; If not reaching working point state, then perform step S5;
Step S4, in the effective passage set reaching working point state, the passage selecting power maximum, and process ends;
Step S5, in effective passage set, the passage selecting C/I maximum, and process ends;
Step S6, does not reselect passage, it may also be useful to previous descending sendaisle, and process ends.
The present invention also provides a kind of base station. This base station comprises:
Power acquisition module, for data feedback channel is carried out channel estimating, obtains the power in each bar footpath of described data feedback channel;
Efficiency assessment module, for the power in described each bar footpath and the threshold value preset being compared, knows to have at least the power in a footpath to be not less than described threshold value if comparing, then described data feedback channel is designated as effective passage;
Calculate module, do ratio for calculating the minimum load of the described effective passage enabling receiving end meet default signal-to-noise target value;
If comparing, working point state estimation module, for the dry ratio that calculates the load of described effective passage, knows that described load is dry than being greater than the dry ratio of described minimum load, is then designated as by described effective passage and reaches working point stator channel;
Channel selecting module, for select the power of user the strongest reach working point stator channel as descending sendaisle.
The flow process that the base station of above-described embodiment performs the selection of descending sendaisle is identical with the descending sendaisle system of selection of previous embodiment, so place repeats no more.
Base station according to above-described embodiment, owing to being provided with the efficiency assessment module for the data feedback channel after channel estimating being carried out efficiency assessment, the minimum load of the described effective passage enabling receiving end meet default signal-to-noise target value for calculating does the calculating module of ratio, for doing the working point state estimation module than the working point state judging channel according to minimum load, achieve and select descending sendaisle based on data feedback channel quality, that can greatly reduce descending sendaisle falsely drops rate, thus reduce the system performance caused because falsely dropping descending sendaisle and reduce.
Further, in the base station of above-described embodiment, if channel selection block also whole data feedback channels for user be not all reach working point stator channel, then select load dry than maximum effective passage as descending sendaisle.
Further, in the base station of above-described embodiment, if channel selection block also whole data feedback channels for user be not all effective passage, then select previous descending sendaisle as descending sendaisle.
The present invention also provides a kind of indoor distributed system, comprises the base station of at least one user and at least one above-described embodiment.
The flow process that the indoor distributed system of above-described embodiment performs the selection of descending sendaisle is identical with the base station of previous embodiment, so place repeats no more.
Indoor distributed system according to above-described embodiment can accurately select the base station of descending sendaisle owing to having, thus has system performance stable, high-quality.
Last it is noted that above embodiment is only in order to illustrate the technical scheme of the present invention, it is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein part technology feature is carried out equivalent replacement; And these amendments or replacement, do not make the spirit and scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution.
Claims (7)
1. a descending sendaisle system of selection, it is characterised in that, comprising:
Step 1, carries out channel estimating to data feedback channel, obtains the power in each bar footpath of described data feedback channel;
Step 2, compares the power in described each bar footpath and the threshold value preset, knows to have at least the power in a footpath to be not less than described threshold value if comparing, then described data feedback channel is designated as effective passage;
Step 3, calculates the dry ratio of minimum load of the described effective passage enabling receiving end meet default signal-to-noise target value;
Step 4, calculates the dry ratio of load of described effective passage, knows that described load is dry than being greater than the dry ratio of described minimum load if comparing, is then designated as by described effective passage and reaches working point stator channel;
Step 5, repeated execution of steps 1-4, until each data feedback channel of traversal user;
Step 6, if in multiple passages of this user, exist reach working point stator channel, then select the power of user the strongest reach working point stator channel as descending sendaisle.
2. descending sendaisle system of selection according to claim 1, it is characterised in that, described step 4 also comprises: knows that described load is dry than being less than or equal the dry ratio of described minimum load if comparing, is then designated as by described effective passage and does not reach working point stator channel;
Also comprise after described step 6:
Step 7, if having at least a passage to be effective passage in the data feedback channel of this user, but these effective passages are and do not reach working point stator channel, then select load dry than maximum effective passage as descending sendaisle.
3. descending sendaisle system of selection according to claim 1 and 2, it is characterised in that, also comprise after described step 6:
Step 8, if whole data feedback channels of user are not all effective passages, then selects previous descending sendaisle as descending sendaisle.
4. a base station, it is characterised in that, comprising:
Power acquisition module, for data feedback channel is carried out channel estimating, obtains the power in each bar footpath of described data feedback channel;
Efficiency assessment module, for the power in described each bar footpath and the threshold value preset being compared, knows to have at least the power in a footpath to be not less than described threshold value if comparing, then described data feedback channel is designated as effective passage;
Calculate module, do ratio for calculating the minimum load of the described effective passage enabling receiving end meet default signal-to-noise target value;
If comparing, working point state estimation module, for the dry ratio that calculates the load of described effective passage, knows that described load is dry than being greater than the dry ratio of described minimum load, is then designated as by described effective passage and reaches working point stator channel;
Channel selecting module, for: when in multiple passages of user exist reach working point stator channel time, select the power of described user the strongest reach working point stator channel as descending sendaisle.
5. base station according to claim 4, it is characterised in that, described working point state estimation module also for, know that described load is dry than being less than or equal the dry ratio of described minimum load if comparing, then described effective passage be designated as and do not reach working point stator channel;
Described channel selecting module also for: when having at least a passage to be effective passage in the data feedback channel of this user, but these effective passages are when not reaching working point stator channel, select load dry than maximum effective passage as descending sendaisle.
6. base station according to claim 4 or 5, it is characterised in that, if described channel selecting module also whole data feedback channels for user be not all effective passage, then select previous descending sendaisle as descending sendaisle.
7. an indoor distributed system, it is characterised in that, comprise at least one user and at least one as arbitrary in claim 4～6 as described in base station.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101116365A (en) * | 2005-02-18 | 2008-01-30 | 富士通株式会社 | Base station and interference reducing method in the base station |
| CN101212767A (en) * | 2006-12-27 | 2008-07-02 | 日本电气株式会社 | Mobile communication system and radio resources assigning method for the system, and base station |
| CN101258759A (en) * | 2005-06-30 | 2008-09-03 | 昂达博思公司 | Systems and methods for making channel assignments to reduce interference and increase capacity of wireless networks |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101116365A (en) * | 2005-02-18 | 2008-01-30 | 富士通株式会社 | Base station and interference reducing method in the base station |
| CN101258759A (en) * | 2005-06-30 | 2008-09-03 | 昂达博思公司 | Systems and methods for making channel assignments to reduce interference and increase capacity of wireless networks |
| CN101212767A (en) * | 2006-12-27 | 2008-07-02 | 日本电气株式会社 | Mobile communication system and radio resources assigning method for the system, and base station |
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