CN106714197A - Method and system for improving inter-cell interference jitter - Google Patents
Method and system for improving inter-cell interference jitter Download PDFInfo
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- CN106714197A CN106714197A CN201510420062.2A CN201510420062A CN106714197A CN 106714197 A CN106714197 A CN 106714197A CN 201510420062 A CN201510420062 A CN 201510420062A CN 106714197 A CN106714197 A CN 106714197A
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Abstract
The invention discloses a method and system for improving inter-cell interference jitter. The method comprises a step of obtaining the reference signal received power (RSRP) reported by all user equipment in a cell, a step of comparing the RSRP reported by the user equipment and preset RSRP for each user equipment in the cell, and a step of comparing the state of current user equipment and the state of the user equipment before obtaining the RSRP reported by the user equipment when the state of current user equipment is interference source user equipment, and updating the state of the current user equipment to be the interference source user equipment when the state of the user equipment is newly added interference source user equipment and the number of the newly added interference source user equipment does not exceed a preset first number, and changing the number of the newly added interference source user equipment. According to the method, when the state of the user equipment is changed, through controlling the number of state changes of the user equipment, the inter-cell interference jitter is reduced.
Description
Technical field
The present invention relates to communication technical field, and in particular to a kind of improvement inter-cell interference shake
Method and system.
Background technology
Long Term Evolution (LongTermEvolved, abbreviation LTE) system up-link is carried using single
Ripple frequency division multiple access (Single-carrier Frequency-Division Multiple Access, referred to as
SC-FDMA) technology is used as multiple access technique, it will ensure that between intra-cell users equipment
Orthogonality, so as to avoid the interference between intra-cell users equipment, but because LTE is
Distributed AC servo system, minizone is present than more serious interference when whole network uses identical networking,
So as to influence uplink throughput.
Interference coordination technique is the key technology that LTE system suppresses inter-cell interference, interference coordination
The process of technology is to determine the resource interference state of each cell any time, by scheduler point
With above resource to suitable user equipment, so as to keep the balance of inter-cell interference, it is to avoid dry
Disturb deterioration.Interference coordination technique is divided into dynamic interference coordination technology and static interference coordination technology,
Static interference coordination technology avoids strong jamming using band plan, for example partial frequency multiplexing and soft
Frequency reuse plan.
Disturbance coordination method is mainly current according to intra-cell users equipment between current uplink cells
Measured value judges disturbance state, and disturbance state limit user equipment is in different time-frequencies and provides
Source, finally carries out resources for user equipment scheduling according still further in the running time-frequency resource for limiting.Consider
The distributed state of a control of the upper behaviors of LTE, when there is power harmful competition in individual user equipments,
Freely dispatched due to user equipment and be likely to result in the significantly lifting of a large number of users plant capacity, according to biography
System interference source determination methods a large number of users equipment will be changed into disturbing source user equipment, will in scheduling
There is resource vacancy, while the up routing information protocol of whole system (Routing Information
Protocol, abbreviation RIP) fluctuate very big, the up self-adaptative adjustment coding (Adaptive of influence
Modulation and Coding, abbreviation AMC) cause the handling capacity to reduce.
The content of the invention
For defect of the prior art, inter-cell interference shake is improved the invention provides one kind
Method and system, change user equipment state when changed by controlling the state of user equipment
The quantity of change, reduces inter-cell interference shake.
In a first aspect, the present invention provides a kind of method for improving inter-cell interference shake, including：
Obtain the Reference Signal Received Power RSRP of all user equipment to report in cell；
For each user equipment in cell, by the RSRP of the user equipment to report with it is default
RSRP is compared, and whether the state for judging current user equipment is interference source user equipment；
When the state of the current user equipment is for interference source user equipment, by the current use
The state of family equipment and the user equipment before the RSRP of the user equipment to report is obtained
State is compared, and whether the state for judging the current user equipment is newly-increased interference source user
Equipment, the state of the user equipment is the state for having stored before the RSRP；
It is that newly-increased interference source user equipment and newly-increased interference source are used in the state of current user equipment
When the quantity of family equipment is not less than default first quantity, the state of the current user equipment is updated
It is interference source user equipment, and changes the quantity of the newly-increased interference source user equipment.
Optionally, whether the state for judging current user equipment is interference source user equipment,
Including：
It is described to work as when the RSRP that current user equipment is reported is more than or equal to default RSRP
The state of preceding user equipment is interference source user equipment；
Or,
When the RSRP that current user equipment is reported is less than default RSRP, the active user
User equipment centered on the state of equipment.
Optionally, whether it is interference source user equipment in the state for judging current user equipment
Afterwards, methods described also includes：
In user equipment centered on the state of the current user equipment, by the active user
The state of equipment with obtain the user equipment to report RSRP before the user equipment shape
State is compared, and whether the state for judging the current user equipment is newly-increased central user equipment.
Optionally, when the state in the current user equipment is for interference source user equipment,
By the state of the current user equipment with obtain the user equipment to report RSRP it
The state of the preceding user equipment is compared, judge the current user equipment state whether be
Newly-increased interference source user equipment, including：
It is to disturb source user equipment in the state of the current user equipment, and the active user
The state of the user equipment before the state of equipment and the RSRP for obtaining the user equipment to report
When having change, the state of the current user equipment is newly-increased interference source user equipment.
Optionally, it is described during user equipment, to be incited somebody to action centered on the state of the current user equipment
The state of the current user equipment should with before the RSRP of the user equipment to report is obtained
The state of user equipment is compared, and whether the state for judging the current user equipment is newly-increased
Central user equipment, including：
The user equipment centered on the state of the current user equipment, and the active user sets
Standby state with obtain the user equipment to report Reference Signal Received Power before the user set
When standby state has change, the state of the current user equipment is newly-increased central user equipment.
Optionally, whether it is that newly-increased center is used in the state for judging the current user equipment
After the equipment of family, methods described also includes：
It is that newly-increased central user equipment and newly-increased central user set in the state of current user equipment
When standby quantity is not less than default second quantity, during the state for updating the current user equipment is
Heart user equipment, and change the quantity of the newly-increased central user equipment.
Optionally, after the RSRP for obtaining each user equipment to report, current using is judged
Before whether the state of family equipment is interference source user equipment, methods described also includes：
The quantity of the quantity of newly-increased interference source user equipment and newly-increased central user equipment is set to 0.
Optionally, the RSRP for obtaining each user equipment to report, including：
If the RSRP for obtaining the user equipment to report is the user equipment reporting for the first time
RSRP, then user equipment centered on the state before user equipment to report RSRP.
Second aspect, present invention also offers a kind of system for improving inter-cell interference shake, bag
Include：
Acquisition module, the reference signal for obtaining all user equipment to report in cell receives work(
Rate RSRP；
First comparison module, for for each user equipment in cell, by the user equipment
The RSRP of report is compared with default RSRP, judge current user equipment state whether be
Interference source user equipment；
Second comparison module, for the state in the current user equipment for interference source user sets
When standby, by the state of the current user equipment and the RSRP in the acquisition user equipment to report
The state of the user equipment is compared before, judge the current user equipment state whether
It is newly-increased interference source user equipment, the state of the user equipment is to have stored before the RSRP
State；
Update module, for the state in current user equipment for newly-increased interference source user equipment and
When the quantity of newly-increased interference source user equipment is not less than default first quantity, the current use is updated
The state of family equipment is interference source user equipment, and changes the newly-increased interference source user equipment
Quantity.
The third aspect, does present invention also offers a kind of base station, including above-mentioned improvement minizone
The system for disturbing shake.
As shown from the above technical solution, a kind of improvement inter-cell interference shake that the present invention is provided
Method and system, by Reference Signal Received Power and the preset reference signal of user equipment to report
Receiving power is compared, and judges the state of current user equipment, and by current user equipment
State is compared with the state before user equipment to report Reference Signal Received Power, it is determined that should
The state of user equipment whether be newly-increased user equipment state, in the state of the user equipment
Be the state of newly-increased user equipment, and the newly-increased user equipment the corresponding quantity of state
Not up to predetermined number when, then allow change user equipment state, the method change user
By controlling the quantity of the state change of user equipment during the state of equipment, reduce minizone and do
Disturb shake.
Brief description of the drawings
A kind of method of improvement inter-cell interference shake that Fig. 1 is provided for one embodiment of the invention
Schematic flow sheet；
A kind of side of improvement inter-cell interference shake that Fig. 2 is provided for another embodiment of the present invention
The schematic flow sheet of method；
A kind of system of improvement inter-cell interference shake that Fig. 3 is provided for one embodiment of the invention
Structural representation.
Specific embodiment
Below in conjunction with the accompanying drawings, the specific embodiment invented is further described.Hereinafter implement
Example is only used for clearly illustrating technical scheme, and can not limit this hair with this
Bright protection domain.
Fig. 1 shows a kind of improvement inter-cell interference shake that one embodiment of the invention is provided
The schematic flow sheet of method, as shown in figure 1, the method comprises the following steps：
101st, the Reference Signal Received Power RSRP of all user equipment to report in cell is obtained.
102nd, for each user equipment in cell, by the RSRP of the user equipment to report with
Default RSRP is compared, and whether the state for judging current user equipment is that interference source user sets
It is standby.
103rd, when the state of the current user equipment is for interference source user equipment, will be described
The state of current user equipment and the user before the RSRP of the user equipment to report is obtained
The state of equipment is compared, and whether the state for judging the current user equipment is newly-increased interference
Source user equipment, the state of the user equipment is the state for having stored before the RSRP.
104th, the state in current user equipment is newly-increased interference source user equipment and newly-increased interference
When the quantity of source user equipment is not less than default first quantity, the current user equipment is updated
State is interference source user equipment, and changes the quantity of the newly-increased interference source user equipment.
Reference Signal Received Power and preset reference signal that the method passes through user equipment to report
Receiving power is compared, and judges the state of current user equipment, and by current user equipment
State is compared with the state before user equipment to report Reference Signal Received Power, it is determined that should
The state of user equipment whether be newly-increased user equipment state, in the state of the user equipment
It is the state of newly-increased user equipment, and number corresponding with the state of the newly-increased user equipment
When amount is not up to predetermined number, then allow to change the state of user equipment, the method is used in change
By controlling the quantity of the state change of user equipment during the state of family equipment, minizone is reduced
Interference shake.
The detailed process of the above method is described in detail below by specific embodiment, such as
Shown in Fig. 2, the method is comprised the following steps：
201st, Reference Signal Received Power (the Reference Signal of each user equipment are judged
Receiving Power, abbreviation RSRP) whether report, if so, then performing step 202；
If it is not, then terminating.
202nd, the Reference Signal Received Power of each user equipment to report is obtained, by newly-increased interference source
The quantity of the quantity of user equipment and newly-increased central user equipment sets to 0.
203rd, the first RSRP information of user equipment to report is taken.
Whether the state for the 204th, judging current user equipment is interference source user equipment, if so,
Then perform step 205；If it is not, then performing step 210.
Specifically, being more than or equal in the Reference Signal Received Power that current user equipment is reported pre-
If during Reference Signal Received Power, the state of the current user equipment is interference source user equipment；
Or,
The Reference Signal Received Power reported in current user equipment connects less than preset reference signal
When receiving power, user equipment centered on the state of the current user equipment.
Whether the state for the 205th, judging the current user equipment is newly-increased interference source user equipment
And whether newly-increased interference source number of user equipment exceedes default first quantity, if so, then performing step
Rapid 206；If it is not, performing step 209.
It will be appreciated that the state in the current user equipment is interference source user equipment, and
The state of the current user equipment receives work(with the reference signal for obtaining the user equipment to report
When the state of the user equipment has change before rate, the state of the current user equipment is newly-increased
Interference source user equipment.
206th, it is interference source user equipment to set the disturbance state of user equipment, by newly-increased interference
Source user equipment quantity adds 1.
207th, judge whether current user equipment is last user equipment, if so, then tying
Beam；If it is not, then performing step 208.
208th, the RSRP information of next user equipment to report is obtained, and continues executing with step 204
The step of whether state for judging current user equipment is interference source user equipment.
209th, the disturbance state of user equipment is not updated.
Whether the state for the 210th, judging current user equipment is newly-increased central user equipment and increases newly
Whether central user number of devices exceedes default second quantity, if so, then performing step 211；
Otherwise, step 209 is performed.
It will be appreciated that in user equipment centered on the state of the current user equipment, will
The state of the current user equipment is received with the reference signal for obtaining the user equipment to report
The state of the user equipment is compared before power, judges the state of the current user equipment
Whether it is newly-increased central user equipment.
The user equipment centered on the state of the current user equipment, and the active user sets
Standby state with obtain the user equipment to report Reference Signal Received Power before the user set
When standby state has change, the state of the current user equipment is newly-increased central user equipment.
The 211st, user equipment centered on the disturbance state of user equipment is set, newly-increased center is used
Family number of devices adds 1, and continues executing with step 207 and judge whether current user equipment is last
The step of one user equipment.
If it should be noted that the Reference Signal Received Power for obtaining the user equipment to report is
The Reference Signal Received Power that the user equipment is reported for the first time, then user equipment to report reference
State before signal reception power is defaulted as central user equipment.
The above method is directed to the problem of interference coordination and scheduling of resource contradiction, in interference source judgement
Gradual strategy is taken, supports to increase (or reduction) high interference source user equipment number by a fixed step size
Amount, for the user equipment higher than (being less than) interference threshold be judged as interference user equipment (in
Heart user equipment), when newly-increased interference user equipment (central user equipment) quantity exceedes necessarily
Step-length, remaining users equipment this next state will not change, into disturbing source user next time
Equipment deterministic process.By with upper type, to reduce system uplink disturbance fluctuation situation, while
Be conducive to up AMC processes, lifting system handling capacity.By in adjustment status of user equipment
The quantity for controlling status of user equipment to change during change, reduces interference shake successively.
Fig. 3 show it is provided in an embodiment of the present invention it is a kind of improve inter-cell interference shake be
The structural representation of system, as shown in figure 3, the system includes：
Acquisition module 31, the Reference Signal Received Power for obtaining each user equipment to report；
First comparison module 32, for successively by the reference signal of each user equipment to report
Receiving power is compared with preset reference signal reception power, judges the shape of current user equipment
Whether state is interference source user equipment；
Second comparison module 33, for the state in the current user equipment for interference source is used
During the equipment of family, by the state of the current user equipment and the ginseng in the acquisition user equipment to report
The state of the user equipment is compared before examining signal reception power, judges the active user
Whether the state of equipment is newly-increased interference source user equipment, the user equipment before the RSRP
State be the state for having stored；
Update module 34, for the state in current user equipment for newly-increased interference source user sets
When quantity that is standby and increasing interference source user equipment newly is not less than default first quantity, renewal is described ought
The state of preceding user equipment sets to disturb source user equipment, and changing the newly-increased interference source user
Standby quantity.
Said system and the above method are one-to-one relations, and the present embodiment is no longer to above-mentioned system
The implementation detail of each module is described in detail in system.
The present embodiment additionally provides a kind of base station, including above-mentioned improvement inter-cell interference shake
System.
In specification of the invention, numerous specific details are set forth.It is to be appreciated, however, that this
Inventive embodiment can be put into practice in the case of without these details.In some instances,
Known method, structure and technology is not been shown in detail, so as not to obscure the reason to this specification
Solution.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention,
Rather than its limitations；Although being described in detail to the present invention with reference to foregoing embodiments,
It will be understood by those within the art that：It still can be to described in foregoing embodiments
Technical scheme modify, or which part or all technical characteristic are equally replaced
Change；And these modifications or replacement, the essence of appropriate technical solution is departed from of the invention each
The scope of embodiment technical scheme, it all should cover in claim of the invention and specification
In the middle of scope.
Claims (10)
1. it is a kind of to improve the method that inter-cell interference is shaken, it is characterised in that including：
Obtain the Reference Signal Received Power RSRP of all user equipment to report in cell；
For each user equipment in cell, by the RSRP of the user equipment to report with it is default
RSRP is compared, and whether the state for judging current user equipment is interference source user equipment；
When the state of the current user equipment is for interference source user equipment, by the current use
The state of family equipment and the user equipment before the RSRP of the user equipment to report is obtained
State is compared, and whether the state for judging the current user equipment is newly-increased interference source user
Equipment, the state of the user equipment is the state for having stored before the RSRP；
It is that newly-increased interference source user equipment and newly-increased interference source are used in the state of current user equipment
When the quantity of family equipment is not less than default first quantity, the state of the current user equipment is updated
It is interference source user equipment, and changes the quantity of the newly-increased interference source user equipment.
2. method according to claim 1, it is characterised in that the judgement is currently used
Whether the state of family equipment is interference source user equipment, including：
It is described to work as when the RSRP that current user equipment is reported is more than or equal to default RSRP
The state of preceding user equipment is interference source user equipment；
Or,
When the RSRP that current user equipment is reported is less than default RSRP, the active user
User equipment centered on the state of equipment.
3. method according to claim 1 and 2, it is characterised in that in the judgement
The state of current user equipment whether be interference source user equipment after, methods described also includes：
In user equipment centered on the state of the current user equipment, by the active user
The state of equipment with obtain the user equipment to report RSRP before the user equipment shape
State is compared, and whether the state for judging the current user equipment is newly-increased central user equipment.
4. method according to claim 1, it is characterised in that described described current
The state of user equipment for interference source user equipment when, by the state of the current user equipment with
The state of the user equipment is compared before the RSRP of the user equipment to report is obtained,
Whether the state for judging the current user equipment is newly-increased interference source user equipment, including：
It is to disturb source user equipment in the state of the current user equipment, and the active user
The state of the user equipment before the state of equipment and the RSRP for obtaining the user equipment to report
When having change, the state of the current user equipment is newly-increased interference source user equipment.
5. method according to claim 3, it is characterised in that described described current
Centered on the state of user equipment during user equipment, by the state of the current user equipment with
The state of the user equipment is compared before obtaining the RSRP of the user equipment to report, judges
Whether the state of the current user equipment is newly-increased central user equipment, including：
The user equipment centered on the state of the current user equipment, and the active user sets
Standby state with obtain the user equipment to report Reference Signal Received Power before the user set
When standby state has change, the state of the current user equipment is newly-increased central user equipment.
6. method according to claim 5, it is characterised in that described in the judgement
After whether the state of current user equipment is newly-increased central user equipment, methods described also includes：
It is that newly-increased central user equipment and newly-increased central user set in the state of current user equipment
When standby quantity is not less than default second quantity, during the state for updating the current user equipment is
Heart user equipment, and change the quantity of the newly-increased central user equipment.
7. method according to claim 3, it is characterised in that obtain each use described
After the RSRP that family equipment is reported, whether the state for judging current user equipment is that interference source is used
Before the equipment of family, methods described also includes：
The quantity of the quantity of newly-increased interference source user equipment and newly-increased central user equipment is set to 0.
8. method according to claim 1, it is characterised in that each user of acquisition
The RSRP that equipment is reported, including：
If the RSRP for obtaining the user equipment to report is the user equipment reporting for the first time
RSRP, then user equipment centered on the state before user equipment to report RSRP.
9. it is a kind of to improve the system that inter-cell interference is shaken, it is characterised in that including：
Acquisition module, the reference signal for obtaining all user equipment to report in cell receives work(
Rate RSRP；
First comparison module, for for each user equipment in cell, by the user equipment
The RSRP of report is compared with default RSRP, judge current user equipment state whether be
Interference source user equipment；
Second comparison module, for the state in the current user equipment for interference source user sets
When standby, by the state of the current user equipment and the RSRP in the acquisition user equipment to report
The state of the user equipment is compared before, judge the current user equipment state whether
It is newly-increased interference source user equipment, the state of the user equipment is to have stored before the RSRP
State；
Update module, for the state in current user equipment for newly-increased interference source user equipment and
When the quantity of newly-increased interference source user equipment is not less than default first quantity, the current use is updated
The state of family equipment is interference source user equipment, and changes the newly-increased interference source user equipment
Quantity.
10. a kind of base station, it is characterised in that improve cell including as claimed in claim 9
Between disturb the system of shake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510420062.2A CN106714197B (en) | 2015-07-16 | 2015-07-16 | Method and system for improving inter-cell interference jitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510420062.2A CN106714197B (en) | 2015-07-16 | 2015-07-16 | Method and system for improving inter-cell interference jitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106714197A true CN106714197A (en) | 2017-05-24 |
| CN106714197B CN106714197B (en) | 2020-01-31 |
Family
ID=58895061
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510420062.2A Expired - Fee Related CN106714197B (en) | 2015-07-16 | 2015-07-16 | Method and system for improving inter-cell interference jitter |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010050320A1 (en) * | 2008-10-27 | 2010-05-06 | 日本電気株式会社 | Base station, wireless communication system, base station control method, wireless communication method, and base station control program |
| CN103581957A (en) * | 2012-07-25 | 2014-02-12 | 中国移动通信集团公司 | Interference detection method, device and system |
| CN104469817A (en) * | 2013-09-18 | 2015-03-25 | 上海无线通信研究中心 | Method for controlling small cell to hibernate based on load and interference level |
| CN104519578A (en) * | 2013-09-29 | 2015-04-15 | 株式会社Ntt都科摩 | Method and apparatus for selecting cells from plurality of cells to perform intermittent transmission |
-
2015
- 2015-07-16 CN CN201510420062.2A patent/CN106714197B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010050320A1 (en) * | 2008-10-27 | 2010-05-06 | 日本電気株式会社 | Base station, wireless communication system, base station control method, wireless communication method, and base station control program |
| CN103581957A (en) * | 2012-07-25 | 2014-02-12 | 中国移动通信集团公司 | Interference detection method, device and system |
| CN104469817A (en) * | 2013-09-18 | 2015-03-25 | 上海无线通信研究中心 | Method for controlling small cell to hibernate based on load and interference level |
| CN104519578A (en) * | 2013-09-29 | 2015-04-15 | 株式会社Ntt都科摩 | Method and apparatus for selecting cells from plurality of cells to perform intermittent transmission |
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| CN106714197B (en) | 2020-01-31 |
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