CN104105101A - Base station cooperation interference management method for eIMTA of TDD in base station - Google Patents
Base station cooperation interference management method for eIMTA of TDD in base station Download PDFInfo
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Abstract
The invention relates to a base station cooperation interference management method for eIMTA of TDD in a base station. The base station comprises a master base station and at least two slave base stations. The method comprises the following steps: performing switching of uplink/downlink configuration type information among adjacent base stations, and the at least two slave base stations reporting the uplink/downlink configuration type information to the master base station; the master base station, according to the received uplink/downlink configuration type information, generating an interference information index table; the interference in a first interfered salve base station from the at least two slave base stations sending an uplink/downlink configuration cooperation request to the master base station; and the master base station, based on the interference information index table, the uplink/downlink configuration cooperation request and an uplink/downlink configuration mode, determining uplink/downlink configuration type updating information for sending to the corresponding slave base stations so as to update the uplink/downlink configuration type information of the corresponding slave base stations.
Description
Technical field
The present invention relates to wireless communication technology, particularly, relate to a kind of in base station for the interference management of enhancing of time division duplex and the interference management method of the cooperation between base stations of service adaptation.
Background technology
In LTE system, (enhanced Interference Management and Traffic Adaptation:eIMTA) is extremely important for the interference management of the enhancing of time division duplex (TDD) and service adaptation, and this will be directly connected to the performance of whole system.
Yet, as shown in Figure 1, victim base station 2 will send up overload indication in the situation that be subject to serious aerial interference to other contiguous base stations, but such transmission is not pointed, and be that the form of broadcasting sends, the base station receiving, for example base station 1 or base station 3 also cannot judge whether that form a base station bunch with the base station 2 that sends this overload indication comes anti-tampering in advance.
That is to say, in the prior art, although proposed the concept of base station bunch, do not have effective implementation, moreover having overload indication just to form base station bunch is not optimal interference management mode yet.
Summary of the invention
According to the understanding to background technology, if can provide the interference management method of a kind of eIMTA for TDD to carry out the interference between management of base station effectively, and can form neatly base station bunch and also add when needed or remove other base station, that will be highly profitable.
A first aspect of the present invention proposed a kind of in base station for the interference management of enhancing of TDD and the interference management method of the cooperation between base stations of service adaptation, it comprises the following steps:
K. between contiguous base station, carry out the exchange of uplink/downlink Configuration Type information;
M. based on the indication of uplink interference overload and described uplink/downlink Configuration Type information, carry out interference management, wherein, described uplink interference overload is designated as the base station being disturbed and indicates to the interference of contiguous base station broadcast.
According to one embodiment of the present of invention, described method also comprises:
N. based on up high interference indication and described uplink/downlink Configuration Type information, carry out interference management.
According to one embodiment of the present of invention, the interference of using in described step n slows down example method for ABS (Almost Blank Subframe).At this, those skilled in the art is to be understood that and does not get rid of other interference elimination methods, such as selecting alone new configuration to reduce conflict number of subframes.
According to one embodiment of the present of invention, in described step k, carry out determining of following information:
-up-down interference source; And
Quantity and/or the position of-conflict subframe.
According to one embodiment of the present of invention, the interference of using in described step m slows down example method and eliminates SDIM (Scheduling Dependent Interference Mitigation) for relying on the interference of scheduling.At this, those skilled in the art is to be understood that and does not get rid of other interference elimination methods.
A second aspect of the present invention proposed a kind of in base station for the interference management of enhancing of TDD and the interference management method of the cooperation between base stations of service adaptation, wherein, described base station comprises that dominant base and be managed at least two are from base station, and it comprises the following steps:
O. between contiguous base station, carry out the exchange of uplink/downlink Configuration Type information and described at least two and report described uplink/downlink Configuration Type information from base station to described dominant base;
P. described dominant base is according to received described uplink/downlink Configuration Type Information generation interfere information concordance list;
Q. the first interference from base station that described in, at least two are disturbed from base station sends uplink/downlink configuration cooperation request to described dominant base while surpassing the first predetermined threshold;
R. described dominant base is determined uplink/downlink Configuration Type lastest imformation and is sent to accordingly from base station, to upgrade the corresponding uplink/downlink Configuration Type information from base station based on described interfere information concordance list, described uplink/downlink configuration cooperation request and uplink/downlink configuration mode.
According to one embodiment of the present of invention, at least two quantity and/or positional informations from the conflict subframe of the described uplink/downlink Configuration Type information between base station described in comprising in described interfere information concordance list.
According to one embodiment of the present of invention, described dominant base is macro base station, at least two micro-base stations in described at least two coverages that are described macro base station from base station.
According to one embodiment of the present of invention, described at least two is at least two contiguous micro-base stations from base station, and described dominant base is a micro-base station in described at least two micro-base stations.
It will be understood by those of skill in the art that dominant base just appears at as cooperation management person identity that it manages in face of base station.Dominant base can be that macro base station can be also micro-base station.If dominant base as micro-base station, itself also can be used as from base station and participates in other cooperations from base station, in the case, described dominant base is that manager is not managed again person.
According to one embodiment of the present of invention, in described step r, described dominant base is determined uplink/downlink Configuration Type lastest imformation based on described interfere information concordance list, described uplink/downlink configuration cooperation request and uplink/downlink configuration mode and is sent to accordingly from base station, to reduce the related quantity from the conflict subframe between the described uplink/downlink Configuration Type information of base station in described uplink/downlink configuration cooperation request.
According to one embodiment of the present of invention, in described step r, by the related described uplink/downlink Configuration Type information configuration from base station in described uplink/downlink configuration cooperation request, be identical, thereby make the related described base station bunch that forms from base station.
According to one embodiment of the present of invention, described uplink/downlink Configuration Type lastest imformation comprises the first indication information, and described the first indication information is notified the related described activity of participating in described base station bunch from base station.
According to one embodiment of the present of invention, when related one from base station, close or when related described one from base station, be mobile base station and while keeping from described base station bunch surpassing the first preset distance, described no longer belongs to described base station bunch from base station.
According to one embodiment of the present of invention, in the time can meeting the first predetermined interference requirement from base station in low data situation and by SDIM and/or ABS for related one, described one no longer belongs to described base station bunch from base station.
According to method of the present invention, can be effectively for the interference management method of the eIMTA of TDD, carry out the interference between management of base station, and can be by exchanging uplink/downlink Configuration Type information between the base station contiguous and carrying out whereby to realize neatly cooperation between base stations and eliminate interference, and under extreme case, form base station bunch, thereby can effectively eliminate the severe jamming between base station.In addition, can add when needed or remove other base station according to method of the present invention, thereby make the generation type of base station bunch more flexible, the performance performance that has also therefore improved whole system.
Accompanying drawing explanation
By reading the following detailed description to non-limiting example with reference to accompanying drawing, it is more obvious that other features, objects and advantages of the present invention will become.
Fig. 1 shows the schematic diagram according to the interference elimination method described in prior art;
Fig. 2 shows the flow chart according to an embodiment of method of the present invention; And
Fig. 3 shows the flow chart according to another embodiment of method of the present invention.
In the drawings, run through different diagrams, same or similar Reference numeral represents same or analogous device (module) or step.
Embodiment
In the specific descriptions of following preferred embodiment, with reference to the appended accompanying drawing that forms a part of the present invention.Appended accompanying drawing shows by way of example can realize specific embodiment of the present invention.The embodiment of example is not intended to limit according to all embodiment of the present invention.Be appreciated that not departing under the prerequisite of scope of the present invention, can utilize other embodiment, also can carry out the modification of structural or logicality.Therefore, following specific descriptions are also nonrestrictive, and scope of the present invention is limited by appended claim.
Fig. 1 described in prior art part of the present invention, therefore do not repeat them here.
Fig. 2 is according to the flow chart of an embodiment of method of the present invention.As can be seen from the figure, according to of the present invention, in base station, for the interference management of enhancing of TDD and the interference management method 200 of the cooperation between base stations of service adaptation, comprise the following steps:
In method step 210, first between contiguous base station, carry out the exchange of uplink/downlink Configuration Type information;
Then, in method step 220, will carry out interference management based on the indication of uplink interference overload and uplink/downlink Configuration Type information, wherein, this uplink interference overload is designated as the base station being disturbed and indicates to the interference of contiguous base station broadcast.
If such interference management can have been realized effectively and disturb and control, will no longer carry out extra interference management so, otherwise according to one embodiment of the present of invention, the method also comprises:
In the method step 230 shown in Fig. 2, will carry out interference management based on up high interference indication and uplink/downlink Configuration Type information.
Wherein, the interference of using in step 230 slows down example method for ABS (Almost Blank Subframe).At this, those skilled in the art is to be understood that and does not get rid of other interference elimination methods, such as selecting alone new configuration to reduce conflict number of subframes.
In addition, in above-mentioned steps 210, carry out determining of following information:
-up-down interference source; And
Quantity and/or the position of-conflict subframe.
According to one embodiment of the present of invention, the interference of using in above-mentioned steps 220 slows down example method and eliminates SDIM (Scheduling Dependent Interference Mitigation) for relying on the interference of scheduling.At this, those skilled in the art is to be understood that and does not get rid of other interference elimination methods.
Yet, with said method, might not effectively disturb control, hereinafter with reference to Fig. 3, introduce another embodiment according to interference management method of the present invention.
Fig. 3 is according to the flow chart of another embodiment of method of the present invention.As can be seen from the figure, according to of the present invention in base station for the interference management of enhancing of TDD and the interference management method 300 of the cooperation between base stations of service adaptation, wherein, base station herein comprises that dominant base and be managed at least two are from base station, and the method comprises the following steps:
Method step 310: carry out the exchange of uplink/downlink Configuration Type information and at least two and report described uplink/downlink Configuration Type information from base station to dominant base between contiguous base station; Particularly, the exchange of uplink/downlink Configuration Type information is carried out respectively in base station 1 and base station 2 and base station 2 and base station 3, in addition, in this shown embodiment three from base station 1,2 and 3 respectively to dominant base report uplink/downlink Configuration Type information separately, thus, dominant base also obtains cicada from the uplink/downlink Configuration Type information separately of base station, and now, dominant base just can be according to received uplink/downlink Configuration Type Information generation interfere information concordance list separately.
As shown in Figure 3, it has listed respectively quantity and/or the number of the conflict subframe between the N1/N2/N3 of base station, at this, it will be understood by those of skill in the art that quantity and positional information are herein not must be simultaneous, on the contrary, in different embodiment, may only need one just can.In order to differentiate the content of form illustrated in fig. 3, seven kinds of patterns need to introducing uplink/downlink Configuration Type information at this, it is as shown in table 1:
Table 1: seven kinds of patterns of uplink/downlink Configuration Type information
Wherein, D represents descending, and U represents up, and S represents special frames.In table, can find out, the quantity of the conflict subframe between the Configuration Type 1 and 6 that N1He base station, base station N2 taked is respectively 1, and its position is positioned on the 4th position, and other table entries by that analogy, does not repeat them here.
Next, in method step 320 illustrated in fig. 3, victim base station N2 will judge whether its interference being subject to has surpassed the first predetermined threshold, before this, N2 can take traditional interference management method, also can not adopt other interference management method, and be only that the suffered annoyance level of assessment self also judges whether to have surpassed the first predetermined threshold thus.If surpassed, will send uplink/downlink configuration cooperation request to dominant base so; Dominant base will be determined uplink/downlink Configuration Type lastest imformation and be sent to accordingly from base station, to upgrade the corresponding uplink/downlink Configuration Type information from base station based on interfere information concordance list, uplink/downlink configuration cooperation request and uplink/downlink configuration mode.
At this, for the above-mentioned uplink/downlink configuration mode of mentioning is described, will introduce the information of number of the conflict subframe of different Configuration Types, as shown in table 2:
| UL/DL configures combination | Conflict number of subframes |
| Configuration 0<->configuration 6 | 1 |
| Configuration 6<->configuration 1 | 1 |
| Configuration 3<->configuration 4 | 1 |
| Configuration 4<->configuration 5 | 1 |
| Configuration 0<->configuration 1 | 2 |
| Configuration 1<->configuration 2 | 2 |
| Configuration 2<->configuration 5 | 2 |
| Configuration 2<->configuration 6 | 2+ |
| Configuration 2<->configuration 3 | 3+ |
| … | … |
| Configuration 0<->configuration 5 | 5+ |
Table 2: the information of number of the conflict subframe of different Configuration Types
In this table, "+" represents special frames conflict, but not ascending-descending subframes conflict.
According to one embodiment of the present of invention, at least two quantity and/or positional informations from the conflict subframe of the uplink/downlink Configuration Type information between base station described in comprising in described interfere information concordance list.This example is as shown in two forms in Fig. 3, do not repeat them here, but, those skilled in the art is to be understood that, above-mentioned number and positional information are not to possess simultaneously, only have one can meet interference management demand under some application scenarios yet.
According to one embodiment of the present of invention, dominant base is macro base station, and at least two micro-base stations at least two coverages that are macro base station from base station.
According to one embodiment of the present of invention, at least two is at least two contiguous micro-base stations from base station, and dominant base is a micro-base station at least two micro-base stations.
It will be understood by those of skill in the art that dominant base just appears at as cooperation management person identity that it manages in face of base station.Dominant base can be that macro base station can be also micro-base station.If dominant base as micro-base station, itself also can be used as from base station and participates in other cooperations from base station, in the case, described dominant base is that manager is not managed again person.
According to one embodiment of the present of invention, in described step 320, dominant base is determined uplink/downlink Configuration Type lastest imformation based on interfere information concordance list, uplink/downlink configuration cooperation request and uplink/downlink configuration mode and is sent to accordingly from base station, to reduce the related quantity from the conflict subframe between the described uplink/downlink Configuration Type information of base station in uplink/downlink configuration cooperation request.For instance, such as the configuration of two contiguous base stations is respectively Class1 and 5, as shown in Table 2, the number of the conflict subframe of such configuration is 2, in order to reduce the number of conflict subframe, feasible in the situation that, can change the base station that is wherein configured to type 5 into type 6, now just can form the configuration combination of only having a conflict subframe.And between the N1 shown in figure Fig. 3 and N2, only have a conflict subframe, and at this moment need N1 and N2 to be configured to belong in the extreme situation of same base station bunch, base station N1 is also configured to type 6, now just can form base station bunch.
According to one embodiment of the present of invention, in described step 320, by the related described uplink/downlink Configuration Type information configuration from base station in uplink/downlink configuration cooperation request, be identical, thereby make the related base station bunch that forms from base station.
According to one embodiment of the present of invention, uplink/downlink Configuration Type lastest imformation comprises the first indication information, this first indication information notify related activity from participation base station, base station bunch (such as: trigger this and from base station, report his uplink/downlink sub-carriers flow of dominant base, be convenient to dominant base in conjunction with reporting in all same clusters, the unified renewal of coordinating new uplink/downlink Configuration Type).For do not receive this first indication information from base station, the uplink/downlink Configuration Type of just obeying dominant base upgrades the configuration of oneself, does not need to participate in base station bunch distinctive activity.
According to one embodiment of the present of invention, when related one from base station, close or when related described one from base station, be mobile base station and while keeping from base station bunch surpassing the first preset distance, described no longer belongs to this base station bunch from base station.
According to one embodiment of the present of invention, in the time can meeting the first predetermined interference requirement from base station in low data situation and by SDIM and/or ABS for related one, this no longer belongs to this base station bunch from base station.
According to method of the present invention, can be effectively for the interference management method of the eIMTA of TDD, carry out the interference between management of base station, and can also come whereby to form neatly base station bunch by exchanging uplink/downlink Configuration Type information between the base station contiguous, thereby can effectively eliminate the severe jamming between base station.In addition, can add when needed or remove other base station according to method of the present invention, thereby make the generation type of base station bunch more flexible, the performance performance that has also therefore improved whole system.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, in any case, all should regard embodiment as exemplary, and be nonrestrictive.In addition, significantly, " comprising ", other elements and step do not got rid of in a word, and wording " one " is not got rid of plural number.A plurality of elements of stating in device claim also can be realized by an element.The first, the second word such as grade is used for representing title, and does not represent any specific order.
Claims (14)
- In base station for the interference management of enhancing of TDD and an interference management method for the cooperation between base stations of service adaptation, it comprises the following steps:K. between contiguous base station, carry out the exchange of uplink/downlink Configuration Type information;M. based on the indication of uplink interference overload and described uplink/downlink Configuration Type information, carry out interference management, wherein, described uplink interference overload is designated as the base station being disturbed and indicates to the interference of contiguous base station broadcast.
- 2. method according to claim 1, is characterized in that, described method also comprises:N. based on up high interference indication and described uplink/downlink Configuration Type information, carry out interference management.
- 3. method according to claim 2, is characterized in that, the interference of using in described step n slows down example method for ABS.
- 4. method according to claim 1, is characterized in that, carries out determining of following information in described step k:-up-down interference source; AndQuantity and/or the position of-conflict subframe.
- 5. method according to claim 1, is characterized in that, the interference of using in described step m slows down example method and eliminates for relying on the interference of scheduling.
- In base station for the interference management of enhancing of TDD and an interference management method for the cooperation between base stations of service adaptation, wherein, described base station comprises that dominant base and be managed at least two are from base station, it comprises the following steps:O. between contiguous base station, carry out the exchange of uplink/downlink Configuration Type information and described at least two and report described uplink/downlink Configuration Type information from base station to described dominant base;P. described dominant base is according to received described uplink/downlink Configuration Type Information generation interfere information concordance list;Q. the first interference from base station that described in, at least two are disturbed from base station sends uplink/downlink configuration cooperation request to described dominant base while surpassing the first predetermined threshold;R. described dominant base is determined uplink/downlink Configuration Type lastest imformation and is sent to accordingly from base station, to upgrade the corresponding uplink/downlink Configuration Type information from base station based on described interfere information concordance list, described uplink/downlink configuration cooperation request and uplink/downlink configuration mode.
- 7. method according to claim 6, is characterized in that, at least two quantity and/or positional informations from the conflict subframe of the described uplink/downlink Configuration Type information between base station described in comprising in described interfere information concordance list.
- 8. method according to claim 6, is characterized in that, described dominant base is macro base station, at least two micro-base stations in described at least two coverages that are described macro base station from base station.
- 9. method according to claim 6, is characterized in that, described at least two is at least two contiguous micro-base stations from base station, and described dominant base is a micro-base station in described at least two micro-base stations.
- 10. method according to claim 6, it is characterized in that, in described step r, described dominant base is determined uplink/downlink Configuration Type lastest imformation based on described interfere information concordance list, described uplink/downlink configuration cooperation request and uplink/downlink configuration mode and is sent to accordingly from base station, to reduce the related quantity from the conflict subframe between the described uplink/downlink Configuration Type information of base station in described uplink/downlink configuration cooperation request.
- 11. methods according to claim 10, it is characterized in that, in described step r, by the related described uplink/downlink Configuration Type information configuration from base station in described uplink/downlink configuration cooperation request, be identical, thereby make the related described base station bunch that forms from base station.
- 12. methods according to claim 11, is characterized in that, described uplink/downlink Configuration Type lastest imformation comprises the first indication information, and described the first indication information is notified the related described activity of participating in described base station bunch from base station.
- 13. methods according to claim 11, it is characterized in that, when related one from base station, close or when related described one from base station, be mobile base station and while keeping from described base station bunch surpassing the first preset distance, described no longer belongs to described base station bunch from base station.
- 14. methods according to claim 11, is characterized in that, in the time can meeting the first predetermined interference requirement from base station in low data situation and by SDIM and/or ABS for related one, described one no longer belongs to described base station bunch from base station.
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| CN104105101B (en) | 2018-12-18 |
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