CN102082584A - Interference detection method and interference detection device in time division synchronous code multiple address access system - Google Patents
Interference detection method and interference detection device in time division synchronous code multiple address access system Download PDFInfo
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Abstract
The invention provides an interference detection method and interference detection device in a time division synchronous code multiple address access system, belonging to the technical field of communication. The method comprises the following steps: measuring the interference signal code power of a first cell in a first time slot to obtain the accumulated amount of the interference signal code power of the first cell in the first time slot; measuring the interference signal code power of a first adjacent cell in the first time slot to obtain the accumulated amount of the interference signal code power of the first adjacent cell in the first time slot on the frequent point the same as the operating frequent point of the first cell when the accumulated amount of the interference signal code power of the first cell in the first time slot is more than or equal to a first interference signal code power threshold value; and identifying the same-frequency same-time-slot interference existing between the first cell and the first adjacent cell when the accumulated amount of the interference signal code power of the first adjacent cell in the first time slot is more than or equal to a second interference signal code power threshold value, thus overcoming the problem that the same-frequency same-time-slot interference between the cell and the adjacent cell can not be detected.
Description
Technical field
The invention belongs to communication technical field, relate in particular to interference detection method and device in a kind of TD-SCDMA (TD SDMA access) system.
Background technology
In the TD-SCDMA system, disturbing factor has become one of obstacle of restriction TD-SCDMA grid quality lifting.Above-mentioned disturbing factor comprises: disturb outside interference and the system in the system.Solve with respect to reason investigation and the problem disturbed outside the system, searching with solution of interference source wanted the many of difficulty in the system.
Comprise for disturbing in the TD-SCDMA system at present: the multiple access that causes because of code division multiple access disturbs and intersymbol interference; Asynchronous because of frame signal, cause the interference of control channel, Traffic Channel; The cross time-slot that causes because of time slot is asymmetric disturbs; And pilot channel disturbs.
For the prevention of disturbing in the system, investigate and subdue the more existing technology in aspect and realize, for example adopt single sub-district and multi-plot joint detection technique.The core of joint detection algorithm is: utilize Given information, the signal results estimated of user in the result of smart antenna airspace filter and the sub-district that all customer data in the sub-district is carried out joint-detection, obtain a plurality of user data informations, thereby extract useful user profile, and utilize all users' channel code and channel information, eliminate multiple access interference (MAI) between intersymbol interference (ISI) and user, thereby reach the purpose that improves the subscriber signal quality.Therefore, from reducing the angle of disturbing, joint-detection has the power system capacity of raising, coverage, reduces advantages such as cell breath, near-far interference.
In theory, joint detection algorithm can effectively be eliminated intersymbol interference and inter-user interference, but, the disadvantage of joint-detection is that its operand is bigger, increase along with number of users, system processing power needs exponential raising, and joint-detection only supports the Multiuser Detection this sub-district in, can't overcome the co-frequency co-time slot interference of adjacent sub-district.
Summary of the invention
In order to address the above problem, the purpose of this invention is to provide interference detection method and device in a kind of TD-SCDMA system, overcome the problem of the co-frequency co-time slot interference that can't detect in the prior art between this sub-district and the adjacent sub-district.
In order to achieve the above object, the invention provides the interference detection method in a kind of TD-SCDMA system, described method comprises:
Measure that first sub-district obtains the cumulative amount of described first sub-district at the Interference Signal Code Power of described first time slot at the Interference Signal Code Power of first time slot in the described TD-SCDMA system;
When described first sub-district at the cumulative amount of the Interference Signal Code Power of described first time slot during more than or equal to the default first Interference Signal Code Power threshold value, on the frequency identical with the working frequency points of described first sub-district, measure the Interference Signal Code Power of the first adjacent sub-district of described first sub-district, obtain the cumulative amount of the described first adjacent sub-district at the Interference Signal Code Power of described first time slot at described first time slot;
If at the cumulative amount of the Interference Signal Code Power of described first time slot during more than or equal to the second Interference Signal Code Power threshold value, determining between the first adjacent sub-district of described first sub-district and described first sub-district, the described first adjacent sub-district has the co-frequency co-time slot interference.
Preferably, described on the frequency identical with the working frequency points of described first sub-district, the first adjacent sub-district of measuring described first sub-district is specially at the Interference Signal Code Power of described first time slot:
If the dominant frequency point of the first adjacent sub-district of described first sub-district is identical with the working frequency points of described first sub-district, then on the dominant frequency point of the described first adjacent sub-district, measure the Interference Signal Code Power of the described first adjacent sub-district at described first time slot.
Preferably, described on the frequency identical with the working frequency points of described first sub-district, the first adjacent sub-district of measuring described first sub-district is specially at the Interference Signal Code Power of described first time slot:
If when the auxiliary frequency of the first adjacent sub-district of described first sub-district is identical with the working frequency points of described first sub-district, on the auxiliary frequency of the described first adjacent sub-district, measure the Interference Signal Code Power of the described first adjacent sub-district at described first time slot.
Preferably, described method also comprises:
In the predetermined time window, when there is interference in statistics when the working frequency points of described first sub-district, the dominant frequency point of the described first adjacent sub-district or the probable value of assisting frequency to exist co-frequency co-time slot to disturb;
When described probable value during, described first sub-district or the described first adjacent sub-district are reduced the processing that co-frequency co-time slot disturbs more than or equal to default threshold value.
Preferably, the described processing that reduces the co-frequency co-time slot interference is specially:
Outside described predetermined time window, when described first sub-district at the cumulative amount of the Interference Signal Code Power of described first time slot during more than or equal to the default first Interference Signal Code Power threshold value, the working frequency points of described first sub-district is changed operation or carried out the offset operation of time slot priority, perhaps to the dominant frequency point of the described first adjacent sub-district or assist frequency and change the offset operation of operating or carrying out time slot priority.
Preferably, the described processing that reduces the co-frequency co-time slot interference is specially:
In described predetermined time window, when described first sub-district, is carried out the radio bearer reprovision of portable terminal in described first sub-district or carried out the radio bearer releasing operation according to priority level during more than or equal to the default first Interference Signal Code Power threshold value at the cumulative amount of the Interference Signal Code Power of described first time slot.
The present invention also provides the interference detecting apparatus in a kind of TD-SCDMA system, and described device comprises:
First measurement module is used for measuring the Interference Signal Code Power of described TD-SCDMA system first sub-district at first time slot, obtains the cumulative amount of described first sub-district at the Interference Signal Code Power of described first time slot;
Second measurement module, be used for when described first sub-district at the cumulative amount of the Interference Signal Code Power of described first time slot during more than or equal to the default first Interference Signal Code Power threshold value, on the frequency identical with the working frequency points of described first sub-district, measure the Interference Signal Code Power of the first adjacent sub-district of described first sub-district, obtain the cumulative amount of the described first adjacent sub-district at the Interference Signal Code Power of described first time slot at described first time slot;
Detection module, be used in the described first adjacent sub-district at the cumulative amount of the Interference Signal Code Power of described first time slot during, determine between the first adjacent sub-district of described first sub-district and described first sub-district and have the co-frequency co-time slot interference more than or equal to the default second Interference Signal Code Power threshold value.
Preferably, described second measurement module comprises:
First comparing unit, whether the dominant frequency point of the first adjacent sub-district that is used for more described first sub-district is identical with the working frequency points of described first sub-district;
First measuring unit is used for working frequency points in the dominant frequency point of the first adjacent sub-district of described first sub-district and described first sub-district when identical, on the dominant frequency point of the described first adjacent sub-district, measures the Interference Signal Code Power of the described first adjacent sub-district at described first time slot.
Preferably, described second measurement module also comprises:
Second comparing unit, whether the auxiliary frequency of the first adjacent sub-district that is used for more described first sub-district is identical with the working frequency points of described first sub-district;
Second measuring unit, be used for working frequency points when the auxiliary frequency of the first adjacent sub-district of described first sub-district and described first sub-district when identical, on the auxiliary frequency of the described first adjacent sub-district, measure the Interference Signal Code Power of the described first adjacent sub-district at described first time slot.
Preferably, described device also comprises:
Statistical module is used in predetermined time window, and the working frequency points of statistics in described first sub-district exists when disturbing, the dominant frequency point of the described first adjacent sub-district or the probable value of assisting frequency to exist co-frequency co-time slot to disturb;
Disturb processing module,, described first sub-district or the described first adjacent sub-district are reduced the processing that co-frequency co-time slot disturbs when described probable value during more than or equal to default threshold value.
As shown from the above technical solution, first sub-district obtains the cumulative amount of first Interference Signal Code Power at the Interference Signal Code Power of first time slot in the TD-SCDMA system by measuring; When the cumulative amount of this first Interference Signal Code Power during more than or equal to the default first Interference Signal Code Power threshold value, on the frequency identical with the working frequency points of first sub-district, measure the Interference Signal Code Power of this first adjacent sub-district, obtain the cumulative amount of the first adjacent sub-district at the Interference Signal Code Power of first time slot at first time slot; If the first adjacent sub-district is at the cumulative amount of the Interference Signal Code Power of first time slot during more than or equal to the default second Interference Signal Code Power threshold value, can determine between first sub-district and the first adjacent sub-district, on this frequency, exist co-frequency co-time slot to disturb, thereby multi-user's co-channel interference that can satisfy in this sub-district and the adjacent sub-district detects, and has overcome the problem of the co-frequency co-time slot interference that can't detect in the prior art between this sub-district and the adjacent sub-district.
Description of drawings
Fig. 1 is the flow chart one of the co-frequency co-time slot interference detection method in the TD-SCDMA system in the embodiments of the invention;
Fig. 2 is the flowchart 2 of the co-frequency co-time slot interference detection method in the TD-SCDMA system in the embodiments of the invention;
Fig. 3 is the block diagram of the co-frequency co-time slot interference detecting apparatus in the TD-SCDMA system in the embodiments of the invention.
Embodiment
In the present embodiment, measure at first that first sub-district obtains the cumulative amount of this first sub-district at the Interference Signal Code Power of first time slot at the Interference Signal Code Power of first time slot in the TD-SCDMA system; Secondly when this first sub-district at the cumulative amount of the Interference Signal Code Power of first time slot during more than or equal to the first Interference Signal Code Power threshold value preset, on the frequency identical with the working frequency points of this first sub-district, measure the Interference Signal Code Power of the first adjacent sub-district of this first sub-district, obtain the cumulative amount of second Interference Signal Code Power at first time slot; If last this first adjacent sub-district is at the cumulative amount of the Interference Signal Code Power of first time slot during more than or equal to the default second Interference Signal Code Power threshold value, can determine to have the co-frequency co-time slot interference between first sub-district and the first adjacent sub-district.
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer,, the embodiment of the invention is done explanation in further detail below in conjunction with embodiment and accompanying drawing.At this, illustrative examples of the present invention and explanation are used to explain the present invention, but not as a limitation of the invention.
Referring to Fig. 1～2, be the flow chart of the co-frequency co-time slot interference detection method in the TD-SCDMA system in the embodiments of the invention, concrete steps are as follows:
First sub-district obtains the cumulative amount of this first sub-district at the Interference Signal Code Power of this first time slot at the Interference Signal Code Power of first time slot in step 101, the measurement TD-SCDMA system.
In the present embodiment, measure control messages by the utilization of UTRAN (Universal Mobile Telecommunications System) side usually and initiate the periodic measurement task, the uplink and downlink slot interfering signal of time sign indicating number power of each sub-district in the TD-SCDMA system is measured to UE.
For NodeB (base station), be to measure ascending time slot Interference Signal Code Power (UL TimeslotISCP);
For UE, be to measure downlink slot interfering signal of time sign indicating number power (DL Timeslot ISCP), certainly other correlative measurement quantifiers are opened as required simultaneously, for example other correlative measurement quantifiers up-downgoing error rate that can be speech business, video traffic, data service etc.
In an embodiment of the present invention, be≤2s (second) to be preferably 0.5s or 1s the measuring period of measurement task.
UE is by measurement report (Measurement Report, MR) reporting measurement statistical items, just each carrier wave business time-slot Interference Signal Code Power of this sub-district is reported, this measurement statistical items can report according to standard TS25.225, TS25.123 cor-relation test values, and writing down the measurement statistical items that reports, the content of record is referring to table 1;
Table 1
| RNC_Name | RNC_ID | NODEB_ID | CELL_ID | MainF | WorkF | TS_num | Timestamp | TS_ISCP_LEV |
| RNC1 | 1152 | 1002 | 10026 | 10104 | 10096 | 5 | XX | The accumulative total amount of reporting |
| RNC3 | 1154 | 10023 | 10236 | 10112 | 10120 | 6 | XX | The accumulative total amount of reporting |
Wherein, RNC_Name represents: the title of base station controller;
RNC_ID represents: the numbering of base station controller; NODEB_ID represents: the numbering of base station;
CELL_ID represents: the numbering of sub-district; MainF represents: the dominant frequency point;
WorkF represents: working frequency points;
TS_num represents: timeslot number;
Timestamp is represented: the time point of record;
TS_ISCP_LEV represents first sub-district that will the measure cumulative amount at the Interference Signal Code Power of first time slot.
With being numbered of sub-district 10026 is example, has write down the dominant frequency point 10104, working frequency points 10096 of this sub-district and at the cumulative amount of the Interference Signal Code Power of time slot 5 in table 1.
In the present embodiment, this first default Interference Signal Code Power threshold value can be arranged to-25～-115dbm, usually the first Interference Signal Code Power threshold value 〉=-during 90dbm, can think that there is disturbed condition in this sub-district.
In this step, when first sub-district at the cumulative amount of the Interference Signal Code Power of first time slot during more than or equal to the default first Interference Signal Code Power threshold value, can proceed first adjacent cell measurement screening operation of first sub-district again, just obtain following parameters:
Table 2
| RNC_Name | RNC_ID | NODEB_ID | CELL_ID | MainF | AssF |
| RNC1 | 1152 | 1002 | 10026 | 10104 | 10096 |
| RNC3 | 1154 | 10023 | 10236 | 10112 | 10120 |
MainF represents: the dominant frequency point of the first adjacent sub-district;
AssF represents: the auxiliary frequency of the first adjacent sub-district;
After in the parameter in obtaining table 2, relatively whether the dominant frequency point of the first adjacent sub-district of this first sub-district is identical with the working frequency points of first sub-district.
In the present embodiment, can adopt the dominant frequency point of the first adjacent sub-district and the working frequency points of first sub-district are done AND-operation, whether whether the dominant frequency point of the first adjacent sub-district of judging first sub-district identical with the working frequency points of first sub-district, and judgment mode also is not limited to this certainly.When the result of AND-operation is " very ", can continue execution in step 103; When the result of AND-operation is " vacation ", can continue to judge whether the auxiliary frequency of the first adjacent sub-district is identical with the working frequency points of first sub-district, and promptly execution in step 105;
In this step, when obtaining the first adjacent sub-district on the cumulative amount of the Interference Signal Code Power of first time slot, relevant parameter can be recorded in the following table:
Table 3
| RNC_Name | RNC_ID | NODEB_ID | CELL_ID | MainF | WorkF | Meas_num | Timestamp | TS_ISCP_LEV |
| RNC1 | 1152 | 1002 | 10026 | 10104 | 10096 | 5 | XX | The accumulative total amount of reporting |
| RNC3 | 1154 | 10023 | 10236 | 10112 | 10120 | 6 | XX | The accumulative total amount of reporting |
Meas_num is expressed as: measure time slot;
In the present embodiment, the scope of the second Interference Signal Code Power threshold value that this is default can be arranged to-25dbm～-115dbm, when the second Interference Signal Code Power threshold value 〉=-during 90dbm, can think that there is disturbed condition in this neighbour sub-district.
Just, when first time slot of the working frequency points of first sub-district is in when disturbing, and the first adjacent sub-district of first sub-district through the screening first adjacent sub-district at the cumulative amount of the Interference Signal Code Power of first time slot during more than or equal to the second Interference Signal Code Power threshold value, can determine between the first adjacent sub-district of first sub-district and this first sub-district and have the co-frequency co-time slot interference.
Whether the auxiliary frequency of the first adjacent sub-district of step 105, comparison first sub-district is identical with the working frequency points of first sub-district, if, execution in step 106; Otherwise, execution in step 102;
When the dominant frequency point of the first adjacent sub-district and the working frequency points of first sub-district are inequality, can continue to judge whether the auxiliary frequency of the first adjacent sub-district is identical with the working frequency points of first sub-district.In the present embodiment, can adopt and the working frequency points of the auxiliary frequency of the first adjacent sub-district and first sub-district is carried out AND-operation judge whether the auxiliary frequency of the first adjacent sub-district is identical with the working frequency points of first sub-district, judgment mode also is not limited to this certainly.When the result of AND-operation is " very ", can continue execution in step 107; When the result of AND-operation is " vacation ", return step 102, relatively whether the working frequency points of first sub-district is identical with the dominant frequency point of the second adjacent sub-district of first sub-district, promptly needs to travel through all adjacent sub-districts of first sub-district.
Step 106, at the auxiliary frequency of the first adjacent sub-district, measure the Interference Signal Code Power of this first adjacent sub-district at this first time slot, obtain the cumulative amount of the first adjacent sub-district, execution in step 107 at the Interference Signal Code Power of first time slot;
Step 107,, the first adjacent sub-district has co-frequency co-time slot interference, execution in step 108 between first sub-district and the first adjacent sub-district if at the cumulative amount of the Interference Signal Code Power of first time slot during more than or equal to the default second Interference Signal Code Power threshold value, determining;
In the present embodiment, the scope of the second Interference Signal Code Power threshold value that this is default can be arranged to-25dbm～-115dbm, when the second Interference Signal Code Power threshold value 〉=-during 90dbm, can think that there is disturbed condition in this neighbour sub-district.
When first time slot of the working frequency points of first sub-district is in when disturbing, and the first adjacent sub-district of first sub-district through the screening first adjacent sub-district at the cumulative amount of the Interference Signal Code Power of first time slot during more than or equal to the second Interference Signal Code Power threshold value, can determine between the first adjacent sub-district of first sub-district and this first sub-district and have the co-frequency co-time slot interference.
In step 108, the predetermined time window, when there is interference in statistics when the working frequency points of first sub-district, the dominant frequency point of this first adjacent sub-district or the probable value of assisting frequency to exist co-frequency co-time slot to disturb;
In the present embodiment, the preset time window mouth can be taken all factors into consideration on the period measurement and calls time, and for example can be arranged at least 4～6 measuring periods, is meant the time cycle to this sub-district sending measuring task measuring period, is generally 0.5 second or 1 second.
In step 108～109, statistics through at least 4～6 time windows, when there is interference in the first cell operation frequency, the first abutting subdistrict dominant frequency point or when assisting probability that frequency occur to disturb more than or equal to 50% (default threshold value), think the first cell operation frequency and first abutting subdistrict dominant frequency point or assist frequency and exist co-frequency co-time slot to disturb, need take optimization means to evade, for example this first sub-district or the first adjacent sub-district be reduced the processing that co-frequency co-time slot disturbs.
In this step, reduce processing that co-frequency co-time slot disturbs and be divided into operation outside predetermined time window and the operation in predetermined time window, wherein
1) outside predetermined time window, when first sub-district when the cumulative amount of the Interference Signal Code Power of first time slot reaches threshold value and requires, first sub-district or the first adjacent sub-district are done the frequency change or are carried out time slot optimization level offset operation.Specific as follows:
Outside predetermined time window, when first sub-district at the cumulative amount of the Interference Signal Code Power of first time slot during more than or equal to the default first Interference Signal Code Power threshold value, the working frequency points of first sub-district is changed operation or carried out the offset operation of time slot priority, perhaps to the dominant frequency point of the first adjacent sub-district or assist frequency and change the offset operation of operating or carrying out time slot priority
2) in predetermined time window, when first sub-district reaches the threshold value requirement at the cumulative amount of the Interference Signal Code Power of first time slot measurement, carry out radio bearer (RB) reprovision of portable terminal in first sub-district or carry out radio bearer discharging (Release) operation according to priority level.Specific as follows:
In predetermined time window, when first sub-district, is carried out the radio bearer reprovision of portable terminal in first sub-district or carried out the radio bearer releasing operation according to priority level during more than or equal to the default first Interference Signal Code Power threshold value at the cumulative amount of the Interference Signal Code Power of first time slot;
As shown from the above technical solution, first sub-district obtains the cumulative amount of first Interference Signal Code Power at the Interference Signal Code Power of first time slot in the TD-SCDMA system by measuring; When the cumulative amount of this first Interference Signal Code Power during more than or equal to the default first Interference Signal Code Power threshold value, on the frequency identical with the working frequency points of first sub-district, measure the Interference Signal Code Power of this first adjacent sub-district, obtain the cumulative amount of the first adjacent sub-district at the Interference Signal Code Power of first time slot at first time slot; If the first adjacent sub-district is at the cumulative amount of the Interference Signal Code Power of first time slot during more than or equal to the default second Interference Signal Code Power threshold value, can determine between first sub-district and the first adjacent sub-district, on this frequency, exist co-frequency co-time slot to disturb, thereby multi-user's co-channel interference that can satisfy in this sub-district and the adjacent sub-district detects, and has overcome the problem of the co-frequency co-time slot interference that can't detect in the prior art between this sub-district and the adjacent sub-district.
In order to realize above-mentioned method embodiment, other embodiment of the present invention also provide the interference detecting apparatus of the co-frequency co-time slot in a kind of TD-SCDMA system.What need at first explanation in addition is; because following embodiment is for realizing aforesaid method embodiment; so the module in this device all is to establish for each step that realizes preceding method; but the present invention is not limited to following embodiment, and any device of said method and module of realizing all should be contained in protection scope of the present invention.And in the following description, the content identical with preceding method omitted at this, to save length.
Referring to Fig. 3, be the structured flowchart of the co-frequency co-time slot interference detecting apparatus in a kind of TD-CDMA access system in the embodiments of the invention, by among the figure as can be known, this device comprises:
In another embodiment of the present invention, this second detection module 32 comprises:
First comparing unit 321, whether the dominant frequency point of the first adjacent sub-district that is used for comparison first sub-district is identical with the working frequency points of first sub-district;
First measuring unit 322 is used for working frequency points in the dominant frequency point of the first adjacent sub-district of first sub-district and first sub-district when identical, on the dominant frequency point of the first adjacent sub-district, measures the Interference Signal Code Power of this first adjacent sub-district at first time slot.
In another embodiment of the present invention, this second detection module 32 comprises:
Second comparing unit 323, whether the auxiliary frequency of the first adjacent sub-district that is used for comparison first sub-district is identical with the working frequency points of first sub-district;
In another embodiment of the present invention, this device also comprises:
Disturb processing module 35, be used for, first sub-district or the described first adjacent sub-district are reduced the processing of co-frequency co-time slot interference when this probable value during more than or equal to default threshold value.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. the interference detection method in the TD-SCDMA system is characterized in that described method comprises:
Measure that first sub-district obtains the cumulative amount of described first sub-district at the Interference Signal Code Power of described first time slot at the Interference Signal Code Power of first time slot in the described TD-SCDMA system;
When described first sub-district at the cumulative amount of the Interference Signal Code Power of described first time slot during more than or equal to the default first Interference Signal Code Power threshold value, on the frequency identical with the working frequency points of described first sub-district, measure the Interference Signal Code Power of the first adjacent sub-district of described first sub-district, obtain the cumulative amount of the described first adjacent sub-district at the Interference Signal Code Power of described first time slot at described first time slot;
If at the cumulative amount of the Interference Signal Code Power of described first time slot during more than or equal to the second Interference Signal Code Power threshold value, determining between the first adjacent sub-district of described first sub-district and described first sub-district, the described first adjacent sub-district has the co-frequency co-time slot interference.
2. method according to claim 1 is characterized in that, and is described on the frequency identical with the working frequency points of described first sub-district, and the first adjacent sub-district of measuring described first sub-district is specially at the Interference Signal Code Power of described first time slot:
If the dominant frequency point of the first adjacent sub-district of described first sub-district is identical with the working frequency points of described first sub-district, then on the dominant frequency point of the described first adjacent sub-district, measure the Interference Signal Code Power of the described first adjacent sub-district at described first time slot.
3. method according to claim 2 is characterized in that, and is described on the frequency identical with the working frequency points of described first sub-district, and the first adjacent sub-district of measuring described first sub-district is specially at the Interference Signal Code Power of described first time slot:
If when the auxiliary frequency of the first adjacent sub-district of described first sub-district is identical with the working frequency points of described first sub-district, on the auxiliary frequency of the described first adjacent sub-district, measure the Interference Signal Code Power of the described first adjacent sub-district at described first time slot.
4. method according to claim 3 is characterized in that, described method also comprises:
In the predetermined time window, when there is interference in statistics when the working frequency points of described first sub-district, the dominant frequency point of the described first adjacent sub-district or the probable value of assisting frequency to exist co-frequency co-time slot to disturb;
When described probable value during, described first sub-district or the described first adjacent sub-district are reduced the processing that co-frequency co-time slot disturbs more than or equal to default threshold value.
5. method according to claim 4 is characterized in that, the described processing that reduces the co-frequency co-time slot interference is specially:
Outside described predetermined time window, when described first sub-district at the cumulative amount of the Interference Signal Code Power of described first time slot during more than or equal to the default first Interference Signal Code Power threshold value, the working frequency points of described first sub-district is changed operation or carried out the offset operation of time slot priority, perhaps to the dominant frequency point of the described first adjacent sub-district or assist frequency and change the offset operation of operating or carrying out time slot priority.
6. method according to claim 4 is characterized in that, the described processing that reduces the co-frequency co-time slot interference is specially:
In described predetermined time window, when described first sub-district, is carried out the radio bearer reprovision of portable terminal in described first sub-district or carried out the radio bearer releasing operation according to priority level during more than or equal to the default first Interference Signal Code Power threshold value at the cumulative amount of the Interference Signal Code Power of described first time slot.
7. the interference detecting apparatus in the TD-SCDMA system is characterized in that described device comprises:
First measurement module is used for measuring the Interference Signal Code Power of described TD-SCDMA system first sub-district at first time slot, obtains the cumulative amount of described first sub-district at the Interference Signal Code Power of described first time slot;
Second measurement module, be used for when described first sub-district at the cumulative amount of the Interference Signal Code Power of described first time slot during more than or equal to the default first Interference Signal Code Power threshold value, on the frequency identical with the working frequency points of described first sub-district, measure the Interference Signal Code Power of the first adjacent sub-district of described first sub-district, obtain the cumulative amount of the described first adjacent sub-district at the Interference Signal Code Power of described first time slot at described first time slot;
Detection module, be used in the described first adjacent sub-district at the cumulative amount of the Interference Signal Code Power of described first time slot during, determine between the first adjacent sub-district of described first sub-district and described first sub-district and have the co-frequency co-time slot interference more than or equal to the default second Interference Signal Code Power threshold value.
8. device according to claim 7 is characterized in that, described second measurement module comprises:
First comparing unit, whether the dominant frequency point of the first adjacent sub-district that is used for more described first sub-district is identical with the working frequency points of described first sub-district;
First measuring unit is used for working frequency points in the dominant frequency point of the first adjacent sub-district of described first sub-district and described first sub-district when identical, on the dominant frequency point of the described first adjacent sub-district, measures the Interference Signal Code Power of the described first adjacent sub-district at described first time slot.
9. device according to claim 8 is characterized in that, described second measurement module also comprises:
Second comparing unit, whether the auxiliary frequency of the first adjacent sub-district that is used for more described first sub-district is identical with the working frequency points of described first sub-district;
Second measuring unit, be used for working frequency points when the auxiliary frequency of the first adjacent sub-district of described first sub-district and described first sub-district when identical, on the auxiliary frequency of the described first adjacent sub-district, measure the Interference Signal Code Power of the described first adjacent sub-district at described first time slot.
10. device according to claim 9 is characterized in that, described device also comprises:
Statistical module is used in predetermined time window, and the working frequency points of statistics in described first sub-district exists when disturbing, the dominant frequency point of the described first adjacent sub-district or the probable value of assisting frequency to exist co-frequency co-time slot to disturb;
Disturb processing module,, described first sub-district or the described first adjacent sub-district are reduced the processing that co-frequency co-time slot disturbs when described probable value during more than or equal to default threshold value.
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