CN103024916A - Method and device for determining uplink interference terminal - Google Patents
Method and device for determining uplink interference terminal Download PDFInfo
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- CN103024916A CN103024916A CN2011102887016A CN201110288701A CN103024916A CN 103024916 A CN103024916 A CN 103024916A CN 2011102887016 A CN2011102887016 A CN 2011102887016A CN 201110288701 A CN201110288701 A CN 201110288701A CN 103024916 A CN103024916 A CN 103024916A
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- base station
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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Abstract
The invention discloses a method for determining an uplink interference terminal. The method comprises the following steps of (1) recording an uplink interference time by a first base station when measuring uplink physical resource block load information; (2) adding the interference time information corresponding to the uplink physical resource block interference information in an interference information indication message by the first base station, and transmitting the interference information indication message to a second base station; and (3) confirming the terminal corresponding to the uplink physical resource block by the second base station through distribution of the time information in the interference information indication message and the physical resource block on a time point. The time information is introduced to the interference information indication message; and the terminal to which the uplink resource is distributed can be solely determined through distribution of the time information and the physical resource block on the time point, thus, the identity of the uplink interference terminal is confirmed, so as to lay a foundation for subsequent scheduling.
Description
Technical field
The present invention relates to the resource adaptation mechanism in the communications field, specifically a kind of method and apparatus of definite generation inter-cell uplink interference terminal.
Background technology
The heterogeneous network coordination system based on carrier aggregation is being discussed among the 3GPP at present, mainly is being referred to after application carrier aggregation in the future network, the how distribution between the different carrier in the coordination network, thereby the interference of reduction intercarrier.Wherein, the interference between macro base station and the little base station is a problem of everybody extensive concern.
When macro base station residential quarter and little base station cell used carrier aggregation technology respectively, the terminal of two cell edges can be by coordinating the distribution of carrier wave, to reduce the interference of minizone.As shown in Figure 1, when grand terminal is resident on carrier wave 3 and 4, can produce larger interference to little base station, can move on to grand terminal on carrier wave 1 and 2 this moment, thereby when guaranteeing that the user experiences, reduce and disturb.
Can understand by further analysis, because terminal can by descending interference problems of solution such as power controls, perhaps when little base station down signal is stronger, switch to little base station.Therefore uplink interference is main focus.
Because macro base station is different from little base station transmitting power, so coverage is different.The transmitting power that can guarantee terminal when descending is more or less the same substantially, thereby avoids the descending interference for the neighbor cell terminal.And during up transmission, because the terminal useful signal need to be received by the macro base station side joint, therefore can cause larger interference to adjacent little base station, as shown in Figure 2.
Although the scheme of the carrier aggregation of narration before can passing through, terminal is adjusted to the less carrier wave of interference to avoid described interference, but because terminal is connected to macro base station at this moment, therefore little base station and which terminal of not knowing which macro base station have uply caused interference for self on the one hand; Macro base station and this terminal do not know that self has caused interference for little base station yet on the one hand in addition.
Therefore how to confirm uplink interference terminal becomes a problem that needs to be resolved hurrily.
The existing scheme that addresses this problem has following two kinds of thinkings:
Thinking 1: can solve by the mode that realizes, namely little base station measurement goes out uplink interference when larger, avoids dispatch terminal on this carrier resource; But this scheme has limited little base station for the use of resource, has affected the performance of resident terminal under little base station; Particularly many when the macro base station cell load, when needing little base station cell to carry out the offload demand, when resident terminal was more below so little base station, this method still can affect scheduling time delay and service quality.
Thinking 2: macro base station is understood the position of little base station by the mode of network management configuration, and the position of mode locating terminal by the location, find out the terminal that may produce for little base station uplink interference, and carry out corresponding operating for it, as it is first-class to adjust to corresponding carrier wave; Yet the shortcoming of this mode is to have proposed higher demand for webmaster and positioning function, has increased complexity.
Because existing solution is not ideal enough, so the present invention will propose a kind of discovery mechanism of new uplink interference terminal.
Summary of the invention
For the problems referred to above, the present invention aims to provide a kind of mechanism that only just can determine the uplink interference terminal by the information interaction between the base station, and this mechanism can comparatively simply solve pinpointing the problems of uplink interference terminal.
According to an aspect of the present invention, a kind of method of definite uplink interference terminal comprises the following steps:
1) the uplink interference generation time is recorded in the first base station when measuring ascending physical signal Resource Block load information; 2) the first base station adds the interference generation time information corresponding with described ascending physical signal Resource Block interfere information in the interfere information Indication message, and described interfere information Indication message is sent to the second base station; 3) terminal corresponding to described ascending physical signal Resource Block confirmed by the distribution of Physical Resource Block on the temporal information in the described interfere information Indication message and this time point in the second base station.
Especially, described the first base station can be little base station, and described the second base station can be macro base station.In other embodiments of the invention, the first base station and the second base station also can be respectively Home eNodeB and little base station.
Above-mentioned steps 2) in, the first base station adds the interference generation time information corresponding with described ascending physical signal Resource Block interfere information and comprises in the interfere information Indication message: one or several ascending physical signal Resource Block for the uplink interference maximum adds the temporal information of disturbing generation, perhaps disturbs to add for each instantaneous ascending physical signal Resource Block and disturbs the temporal information that produces.
Wherein, described temporal information can be the absolute time stamp sign that is accurate to millisecond, also can be SFN frame and subframe.
Wherein, described interfere information Indication message can be the Load information message in the LTE system.
According to a further aspect in the invention, also provide a kind of device of definite uplink interference terminal, having comprised: the uplink interference measurement module is used for measuring ascending physical signal Resource Block load information, and records simultaneously the uplink interference generation time; Interfere information Indication message sending module is used for adding the interference generation time information corresponding with described ascending physical signal Resource Block interfere information at the interfere information Indication message, and sends described interfere information Indication message.Especially, said apparatus can be deployed in little base station.
According to a further aspect of the invention, also provide the another kind of device of determining that up terminal is disturbed, having comprised: interfere information Indication message receiver module is used for receiving the interfere information Indication message that produces interference time with the ascending physical signal Resource Block; Uplink interference terminal check module, terminal corresponding to described ascending physical signal Resource Block confirmed in the distribution that is used for Physical Resource Block on temporal information by described interfere information Indication message and this time point.Especially, said apparatus can be deployed in macro base station.
The present invention has introduced temporal information in the interfere information Indication message, can uniquely confirm by the distribution of Physical Resource Block on temporal information and this time point which terminal ascending resource distributes to, thereby confirm the identity of uplink interference terminal, thereby lay the first stone for follow-up scheduling.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of writing, claims and accompanying drawing.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Accompanying drawing is used to provide a further understanding of the present invention, and consists of the part of specification, is used for together with embodiments of the present invention explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic diagram that the expression minizone produces the reason of disturbing;
Fig. 2 is the schematic diagram that the expression minizone produces the mechanism of disturbing;
Fig. 3 is the schematic diagram of the little base station of expression and the mutual ascending physical signal Resource Block of macro base station interfere information Indication message.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, is not intended to limit the present invention.
According to a preferred forms of the present invention, a kind of method of definite uplink interference terminal may further comprise the steps: 1) the uplink interference generation time is recorded in the first base station when measuring ascending physical signal Resource Block (PRB) load information; 2) the first base station adds the interference generation time information corresponding with described up PRB interfere information in the interfere information Indication message, and described interfere information Indication message is sent to the second base station; 3) terminal corresponding to described up PRB confirmed by the distribution of PRB on the temporal information in the described interfere information Indication message and this time point in the second base station.Below will be described in detail each step.
1. the uplink interference generation time is recorded in the first base station when measuring up PRB load information.
In the prior art, existing various ways can be realized the base station to the measurement of uplink interference PRB, also introduces to some extent in the background technology part of the present invention, therefore is not described in detail.In this step, metering system is unimportant, and importantly record disturbs the time that produces when measuring.
2. the first base station adds the interference generation time information corresponding with described up PRB interfere information in the interfere information Indication message, and described interfere information Indication message is sent to the second base station.
This step is core of the present invention.In different communication networks, the interfere information Indication message can be different signaling.For example, in the LTE system, the situation that disturbed condition that at present can be by LoadInformation (3GPP TS 36.423 v10.2.0) each cell uplink PRB of interacting message between the base station and whether needing is avoided, as shown in Figure 3.Mutual by this information can determine that the interference which up PRB of neighbor cell is subject to is comparatively serious, thereby as the reference of follow-up scheduling.In other system, also can transmit the interfere information Indication message by other signalings, such as base station configuration updating (eNB Configuration Update).Those skilled in the art will be understood that in different communication systems, and interfere information Indication message that can also the specialized designs other types also can be realized purpose of the present invention.
Yet present Load information is not real-time, interactive, but therefore the statistical value of a period of time (for example 100ms) can't confirm it is which terminal has caused comparatively serious uplink interference for little base station cell actually.
Take the LTE system as example, can in Load information or special interfere information Indication message, introduce temporal information, can uniquely confirm by the distribution of PRB on temporal information and this time point which terminal ascending resource distributes to, thereby confirm the identity of uplink interference terminal.
Wherein, the design of concrete temporal information can be:
The interference sign of corresponding each the instantaneous PRB of each temporal information; Perhaps
The statistics of the corresponding PRB of each or a plurality of temporal information disturbs sign to bear results time that one or several uplink interference of middle maximum produce.
That is to say, can confirm like this interference time of each PRB for each instantaneous interference PRB joining day information, thereby in subsequent step, confirm the corresponding terminal of each interference PRB; Also can be only for disturbing one or several the most serious PRB joining day information, thereby only confirm to produce to disturb the most serious terminal in the subsequent step again, also can realize purpose of the present invention.
Wherein, the design form of temporal information can be the mode that absolute time stamp or System Frame Number (SFN) add subframe:
1) form of absolute time stamp, namely the form by absolute time identifies the time that this uplink interference produces, and divides xx xx second millisecond such as xx xx month xx day xx.
For example, in the LTE system, join absolute time stamp information in the Load information message after, new Load information message format can be: the PRB1 of feedback, disturb rank: height, generation time: xx xx month xx day xx divides xx xx second millisecond.
2) the SFN frame adds the form of subframe, in TDD communication, because base station synchronization, so can determine the radio frames that this up PRB measures by frame number, owing to comprising 10 subframes in a radio frames, therefore the subframe position that sends by the unique affirmation of subframe numbers more subsequently just can be by the PRB resource location of confirming for PRB number to send in the subframe, thus the affirmation terminal identity.
After joining SFN frame and subframe in the Load information message, new Load information message format can be: the PRB 1 of feedback, disturb rank: height, generation time: SFNxx, subframe xx.
3. terminal corresponding to described up PRB confirmed by the distribution of PRB on the temporal information in the described interfere information Indication message and this time point in the second base station.
According to obtain in the step 2 with the corresponding interference generation time of PRB that produce to disturb facing the residential quarter, can confirm the terminal that each PRB is corresponding from the distribution of PRB.The base station has possessed this ability in the prior art, is not described in detail herein.
Those skilled in the art will be understood that as background technology part of the present invention described, and a free-revving engine of the present invention is to confirm the interference of communicating by letter between the suffered macro base station in little base station and the grand terminal.Therefore, in preferred embodiments more of the present invention, the first base station in the method for affirmation uplink interference terminal can be little base station, and the second base station then is macro base station; Perhaps the first base station can be Home eNodeB (or being called femto base station), and the second base station then is little base station.
In order to implement said method, the present invention also provides the device corresponding with it.The first device can but be not limited to be arranged on little base station, mainly comprise uplink interference measurement module and interfere information Indication message sending module.Wherein:
The uplink interference measurement module is mainly used in measuring this residential quarter is formed the up PRB that disturbs, and record disturbs generation time simultaneously;
Interfere information Indication message sending module is mainly used in adding the interference generation time information corresponding with described up PRB in the interfere information Indication message, perhaps only in the interfere information Indication message, only add the interference generation time information corresponding with one or several up PRB of degree of disturbance maximum, and send described interfere information Indication message.
Wherein, described temporal information is absolute time stamp sign or SFN frame and the subframe that is accurate to millisecond.Described interfere information Indication message can be Load information message.
The second device for real-time said method provided by the invention can but be not limited to be arranged on macro base station, this device comprises interfere information Indication message receiver module and uplink interference terminal check module.Wherein:
Interfere information Indication message receiver module is used for receiving the interfere information Indication message that produces interference time with up PRB;
Uplink interference terminal check module, terminal corresponding to described up PRB confirmed in the distribution that is used for PRB on temporal information by described interfere information Indication message and this time point.
Wherein, described temporal information is absolute time stamp sign or SFN frame and the subframe that is accurate to millisecond.Described interfere information Indication message can be Load information message.
Claims (15)
1. the method for a definite uplink interference terminal is characterized in that, comprises the following steps:
1) the uplink interference generation time is recorded in the first base station when measuring ascending physical signal Resource Block load information;
2) the first base station adds the interference generation time information corresponding with described ascending physical signal Resource Block interfere information in the interfere information Indication message, and described interfere information Indication message is sent to the second base station;
3) terminal corresponding to described ascending physical signal Resource Block confirmed by the distribution of Physical Resource Block on the temporal information in the described interfere information Indication message and this time point in the second base station.
2. method according to claim 1, it is characterized in that, described step 2) in, the first base station adds the interference generation time information corresponding with described ascending physical signal Resource Block interfere information and comprises in the interfere information Indication message: one or several ascending physical signal Resource Block for the uplink interference maximum adds the temporal information of disturbing generation, perhaps disturbs to add for each instantaneous ascending physical signal Resource Block and disturbs the temporal information that produces.
3. method according to claim 1 is characterized in that, described interfere information Indication message is Load information message.
4. method according to claim 1 is characterized in that, described temporal information is the absolute time stamp sign that is accurate to millisecond.
5. method according to claim 1 is characterized in that, described temporal information is SFN frame and subframe.
6. method according to claim 1 is characterized in that, described the first base station is little base station, and described the second base station is macro base station; Perhaps, described the first base station is Home eNodeB, and the second base station is little base station.
7. the device of a definite uplink interference terminal is characterized in that, comprising:
The uplink interference measurement module is used for measuring ascending physical signal Resource Block load information, and records simultaneously the uplink interference generation time;
Interfere information Indication message sending module is used for adding the interference generation time information corresponding with described ascending physical signal Resource Block interfere information at the interfere information Indication message, and sends described interfere information Indication message.
8. device according to claim 7, it is characterized in that, describedly in the interfere information Indication message, add the interference generation time information corresponding with described ascending physical signal Resource Block interfere information and comprise: add for one or several ascending physical signal Resource Block of uplink interference maximum and disturb the temporal information that produces, perhaps disturb for each instantaneous ascending physical signal Resource Block to add the temporal information of disturbing generation.
9. device according to claim 7 is characterized in that, described temporal information is the absolute time stamp sign that is accurate to millisecond.
10. device according to claim 7 is characterized in that, described temporal information is SFN frame and subframe.
11. device according to claim 7 is characterized in that, described interfere information Indication message is Load information message.
12. a device of determining that up terminal is disturbed is characterized in that, comprising:
Interfere information Indication message receiver module is used for receiving the interfere information Indication message that produces interference time with the ascending physical signal Resource Block;
Uplink interference terminal check module, terminal corresponding to described ascending physical signal Resource Block confirmed in the distribution that is used for Physical Resource Block on temporal information by described interfere information Indication message and this time point.
13. device according to claim 12 is characterized in that, described interfere information Indication message is Load information message.
14. device according to claim 12 is characterized in that, described temporal information is the absolute time stamp sign that is accurate to millisecond.
15. device according to claim 12 is characterized in that, described interfere information Indication message is SFN frame and subframe.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110288701.6A CN103024916B (en) | 2011-09-26 | 2011-09-26 | A kind of method and apparatus determining uplink interference terminal |
| PCT/CN2012/081475 WO2013044739A1 (en) | 2011-09-26 | 2012-09-17 | Method and device for determining uplink interference terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110288701.6A CN103024916B (en) | 2011-09-26 | 2011-09-26 | A kind of method and apparatus determining uplink interference terminal |
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| CN103024916A true CN103024916A (en) | 2013-04-03 |
| CN103024916B CN103024916B (en) | 2015-10-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103139917B (en) * | 2011-11-29 | 2017-12-12 | 中兴通讯股份有限公司 | Cause recognition methods, the apparatus and system of the user equipment of uplink interference |
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| CN101742550A (en) * | 2008-11-06 | 2010-06-16 | 华为技术有限公司 | Method, related equipment and system for fixing user influencing neighbor cell |
| CN101854635A (en) * | 2009-04-03 | 2010-10-06 | 中兴通讯股份有限公司 | Method and system for transmitting intercell interference coordination indication information |
| CN102065488A (en) * | 2011-01-21 | 2011-05-18 | 新邮通信设备有限公司 | Optimized inter-cell interference coordination method and base station |
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2011
- 2011-09-26 CN CN201110288701.6A patent/CN103024916B/en active Active
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2012
- 2012-09-17 WO PCT/CN2012/081475 patent/WO2013044739A1/en active Application Filing
Patent Citations (5)
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| JP2003259414A (en) * | 2002-03-05 | 2003-09-12 | Sony Corp | Mobile station and mobile communication system |
| CN101631351A (en) * | 2008-07-14 | 2010-01-20 | 中兴通讯股份有限公司 | Measurement control method |
| CN101742550A (en) * | 2008-11-06 | 2010-06-16 | 华为技术有限公司 | Method, related equipment and system for fixing user influencing neighbor cell |
| CN101854635A (en) * | 2009-04-03 | 2010-10-06 | 中兴通讯股份有限公司 | Method and system for transmitting intercell interference coordination indication information |
| CN102065488A (en) * | 2011-01-21 | 2011-05-18 | 新邮通信设备有限公司 | Optimized inter-cell interference coordination method and base station |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103139917B (en) * | 2011-11-29 | 2017-12-12 | 中兴通讯股份有限公司 | Cause recognition methods, the apparatus and system of the user equipment of uplink interference |
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| Publication number | Publication date |
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| CN103024916B (en) | 2015-10-07 |
| WO2013044739A1 (en) | 2013-04-04 |
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