CN103874101B

CN103874101B - Method for detecting co-frequency interference of TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) network, base station and RNC (Radio Network Controller)

Info

Publication number: CN103874101B
Application number: CN201410097612.7A
Authority: CN
Inventors: 刘杨
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2014-03-14
Filing date: 2014-03-14
Publication date: 2017-04-19
Anticipated expiration: 2034-03-14
Also published as: CN103874101A

Abstract

The embodiment of the invention provides a method for detecting co-frequency interference of a TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) network, a base station and an RNC (Radio Network Controller). The TD-SCDMA network comprises a cell and an adjacent cell. The method comprises the following steps: measuring the ISCP (Interference on Signal Code Power) of the cell by using the base station; when the ISCP of the cell surpasses a first preset threshold value, performing channel estimation on the adjacent cell, and judging whether an activated channel estimation window exists in the adjacent cell or not; if so, calculating the RSCP (Received Signal Code Power) of a single VRU (Voice Response Unit) reaching the cell in the adjacent region specific to the estimated channel estimation window of the adjacent cell; calculating the average value of the RSCP, and transmitting the average value of the RSCP to the RNC; calculating the ISCP of the adjacent cell on the cell according to the average value of the RSCP by using the RNC. By adopting the method, the co-frequency interference of adjacent cells can be measured and counted under the situation of any co-frequency interference power magnitude in the system, so that a co-frequency interference source is controlled to reduce the influence of co-frequency interference on services. Moreover, network optimization is performed according to statistical data, so that the co-frequency interference environment is reduced.

Description

For detecting method, base station and the RNC of TD-SCDMA network co-channel interference

Technical field

The application is related to communication technical field, more particularly to a kind of side for detecting TD-SCDMA network co-channel interference Method, a kind of square base station for detecting TD-SCDMA network co-channel interference, and, one kind is same frequently for detecting TD-SCDMA network The RNC of interference.

Background technology

In wireless network networking, because frequency spectrum resource is limited, the frequency spectrum resource of same frequency can repeat in zones of different Use, this necessarily brings co-channel interference in system.So-called co-channel interference, that is, refer to the carrier frequency of garbage signal and the carrier frequency of useful signal It is identical, and to receiving the interference caused with the receiver of frequency useful signal.In wireless network networking, channeling system in system Number is increasing, while the increase of portfolio and customer volume causes cell capacity-enlarging, for example, expands carrier wave or cell splitting, causes The distance between base station site is relatively reducing before, and co-channel interference is also just increasingly severe in system.

Furthermore, TD-SCDMA system spreading code and scrambler are shorter, and this is caused in identical networking, in identical MPS process And under capacity, and identical channel circumstance, co-channel interference is more serious with respect to other systems in TD-SCDMA system.Current TD-SCDMA network Jing often due in system co-channel interference cause very big impact to business, the problems such as form single-pass, call drop, Have a strong impact on telex network.

In order to solve co-channel interference in system, optimize network, need to detect co-channel interference.At present, TD-SCDMA System employs same frequency joint detection algorithm, to overcome the impact of the co-channel interference in certain power bracket, so as to realize TD- The identical networking of SCDMA networks.So-called joint-detection, is exactly Multiuser Detection（Multi-userDetection）One kind.Pass The associated detection technique of system carries out respectively spreading code fully according to the theoretical signal to each user of classical DSSS With process, its receiving terminal with one and send address code（Waveform）The matched filter for matching（Correlator）To realize signal point From the directly demodulation judgement after correlator.The associated detection technique adopted in TD-SCDMA system is to detect skill in classical joint On the basis of art, make full use of and cause MAI to disturb（Multi-access inference）All subscriber signals and its multipath prior information, use The separation of family signal all divides the signal of all users within one step as a unified joint detection process that is mutually related Leave and.Additionally, in terms of the network optimization, typically with the ISCP of network（Interference Signal Code Power, Interference Signal Code Power）Overall interference situation in measuring to judge network.

For TD-SCDMA system, the upward signal power that base station receives is typically in [- 40dBm, -120dBm] model In enclosing, it is believed that co-channel interference power bracket is also [- 40dBm, -120dBm] in system.With frequency joint detection algorithm performance There is its limitation, not can be effective in co-channel interference power bracket in the system of [- 40dBm, -120dBm].Additionally, ISCP The overall interference situation of network has only been reacted in measurement, thus, the network optimization does not have specific aim, is unfavorable for the exclusion of co-channel interference.

Therefore, the technical problem that those skilled in the art urgently solve is needed to be exactly at present：There is provided a kind of for examining Method, base station and the RNC of TD-SCDMA network co-channel interference are surveyed, to the situation of any co-channel interference watt level in system Under neighbor cell co-channel interference is measured, counted, so as to co-channel interference source be controlled, to reduce co-channel interference pair The impact of business, and network optimization reduction generation co-channel interference environment is carried out according to statistical data.

The content of the invention

Embodiment of the present invention technical problem to be solved is to provide a kind of for detecting TD-SCDMA network co-channel interference Method, arbitrarily neighbor cell co-channel interference is measured, be united in the case of co-channel interference watt level in the system Meter, so as to be controlled to co-channel interference source, to reduce impact of the co-channel interference to business, and is carried out according to statistical data The network optimization is reduced and produces co-channel interference environment.

Accordingly, the embodiment of the present invention additionally provides a kind of base station and for detecting TD-SCDMA network co-channel interference The RNC for detecting TD-SCDMA network co-channel interference is planted, to the realization and application that ensure said method.

In order to solve the above problems, the invention discloses a kind of method for detecting TD-SCDMA network co-channel interference, The TD-SCDMA network includes this cell and adjacent area, and described method includes：

The Interference Signal Code Power ISCP of base station measurement this cell；

When the Interference Signal Code Power ISCP of described cell is more than the first predetermined threshold value, channel is carried out to adjacent area and is estimated Meter, judges channel estimation window of the adjacent area with the presence or absence of activation；

If the adjacent area has the channel estimation window of activation, calculate described for the channel estimation window of adjacent area activation Adjacent area reaches the received signal code power RSCP of single void code channel VRU of this cell；

According to the predefined time cycle, the meansigma methodss of the RSCP are calculated, and the meansigma methodss of the RSCP are sent to Radio network controller (RNC)；Wherein, the radio network controller (RNC) is used to go out this according to the mean value calculation of the RSCP Interference Signal Code Power of the adjacent area to this cellAnd the interference using described this adjacent area to this cell is believed Same levelCarry out disturbing reduction to process.

Preferably, it is described that channel estimation is carried out to adjacent area, judge the adjacent area with the presence or absence of the channel estimation window of activation Step includes：

Obtain the code word of the adjacent area；

According to the code word of the adjacent area, channel estimation is carried out to the adjacent area, obtain channel estimation window position and described Aggregate channel impulse response impulse (i) of the channel estimation window CHE_pos of adjacent area^CHE_pos；

Using aggregate channel impulse response impulse (i)^CHE_posCalculate the channel estimation window CHE_ of the adjacent area The tap power of pos；

Whether the tap power for judging the channel estimation window CHE_pos of the adjacent area is more than the second predetermined threshold value, if so, then Judge that the adjacent area has the channel estimation window of activation, otherwise, it is determined that the adjacent area does not have the channel estimation window of activation.

Preferably, the combination letter of the channel estimation window CHE_pos of the adjacent area is calculated the adjacent area by below equation Road impulse response impulse (i)^CHE_posIf cell_code_id (i) is the code word of i-th adjacent area, according to code word cell_ Code_id (i) carries out channel estimation, then the single-code channel aggregate channel impulse response of the channel estimation window CHE_pos of i-th adjacent area For

Wherein, CHE_pos be channel estimation window position, K_VRUFor corresponding empty code channel number,For empty code channel K_VRUIt is right The spreading factor in the real code road answered, com_impulse_response_{CHE_pos}Obtain with spreading code convolution for channel estimation results Aggregate channel impulse response.

Preferably, described cell has corresponding adjacent area table, and described method also includes：

Base station sends the corresponding code word in the adjacent area and channel estimation window position to radio network controller (RNC)；

The radio network controller (RNC) goes out this adjacent area to this according to the mean value calculation of the RSCP in the following manner The Interference Signal Code Power of cell

Made a look up in the adjacent area table using the corresponding code word in the adjacent area, if the code word is present in the adjacent area In table, then the adjacent area is judged as interference adjacent area；

When there is user in the channel estimation window of the interference adjacent area, then the user is judged as interference user；

The code channel number of the statistics interference CU；

Interference signal code of this adjacent area to this cell is gone out using the mean value calculation of the code channel number and the RSCP Power

Preferably, the channel estimation window for adjacent area activation calculates single void code that the adjacent area reaches this cell The step of received signal code power RSCP of road VRU, includes：

Obtain the length of the channel estimation window CHE_pos；

Using the length and the aggregate channel impulse response impulse (i of the channel estimation window CHE_pos )^CHE_pos, calculate the received signal code power RSCP that the adjacent area reaches single void code channel VRU of this cell.

Preferably, this adjacent area pair is gone out using the mean value calculation of the code channel number and the RSCP by below equation The Interference Signal Code Power of this cell

Wherein, P_i(CHE_pos)_VRUThe received signal code power of single void code channel VRU of this cell is reached for the adjacent area RSCP, K_VRUFor the corresponding empty code channel numbers of channel estimation window CHE_pos,For empty code channel K_VRUThe spread spectrum in corresponding real code road The factor, CHE is the number of the channel estimation window CHE_pos.

In order to solve the above problems, the invention also discloses a kind of side for detecting TD-SCDMA network co-channel interference Method, the TD-SCDMA network includes this cell and adjacent area, and described method includes：

Radio network controller (RNC) receives the meansigma methodss of the RSCP that base station sends；The meansigma methodss of the RSCP by according to Predefined time cycle, the calculating adjacent area reaches the flat of the received signal code power RSCP of single void code channel VRU of this cell Average is obtained；The received signal code power RSCP of single void code channel VRU is by for the channel estimation window of adjacent area activation Calculate and obtain；The channel estimation window of the activation is by the Interference Signal Code Power ISCP when this cell more than the first predetermined threshold value When, channel estimation determination is carried out to adjacent area；The Interference Signal Code Power ISCP is obtained by base station measurement；

Go out Interference Signal Code Power of this adjacent area to this cell according to the mean value calculation of the RSCP

Using Interference Signal Code Power of described this adjacent area to this cellCarry out disturbing reduction to process.

Preferably, the adjacent area has corresponding code word and channel estimation window position, and described cell has corresponding neighbour Area's table, described method also includes：

Radio network controller (RNC) receives described corresponding code word and the channel estimation window position that base station sends；It is described right The code word and channel estimation window position answered is obtained by the base station；

The mean value calculation according to the RSCP goes out Interference Signal Code Power of this adjacent area to this cellThe step of include：

The code channel number of the statistics interference CU；

In order to solve the above problems, the invention also discloses a kind of base for detecting TD-SCDMA network co-channel interference Stand, it is characterised in that the TD-SCDMA network includes this cell and adjacent area, and described base station includes：

The Interference Signal Code Power ISCP measurement modules of this cell, for measuring the Interference Signal Code Power of this cell ISCP；

The channel estimation window judge module of activation, in the Interference Signal Code Power ISCP of described cell more than first During predetermined threshold value, channel estimation is carried out to adjacent area, judge channel estimation window of the adjacent area with the presence or absence of activation；

The received signal code power RSCP computing modules of single void code channel VRU, for the channel that there is activation in the adjacent area During estimating window, calculate the adjacent area and reach single void code channel VRU of this cell and connect for the channel estimation window of adjacent area activation Receiving number power RSCP；

Interference Signal Code Power of this adjacent area to this cellComputing module, for according to predefined Time cycle, calculate the meansigma methodss of the RSCP, and the meansigma methodss of the RSCP are sent to into radio network controller (RNC)； Wherein, the radio network controller (RNC) is used to go out interference letter of this adjacent area to this cell according to the mean value calculation of the RSCP Same levelAnd the Interference Signal Code Power using described this adjacent area to this cell Carry out disturbing reduction to process.

Preferably, the channel estimation window judge module of the activation includes following submodule：

Acquisition submodule, for obtaining the code word of the adjacent area；

Aggregate channel impulse response impulse (i)^CHE_posSubmodule is obtained, for according to the code word of the adjacent area, to institute Stating adjacent area carries out channel estimation, obtains the combination letter of the channel estimation window CHE_pos of channel estimation window position and the adjacent area Road impulse response impulse (i)^CHE_pos；

Tap power calculating sub module, for using aggregate channel impulse response impulse (i)^CHE_posCalculate institute State the tap power of the channel estimation window CHE_pos of adjacent area；

The channel estimation window decision sub-module of activation, for judging the tap of the channel estimation window CHE_pos of the adjacent area Whether power is more than the second predetermined threshold value, if so, then judges that the adjacent area has the channel estimation window of activation, otherwise, it is determined that institute State the channel estimation window that adjacent area does not have activation.

Preferably, the combination letter of the channel estimation window CHE_pos of the adjacent area is calculated the adjacent area by below equation Road impulse response impulse (i)^CHE_posIf cell_code_id (i) is the code word of i-th adjacent area, according to code word cell_ Code_id (i) carries out channel estimation, then the aggregate channel impulse response of the single-code channel channel estimation window CHE_pos of i-th adjacent area For：

Preferably, described cell has corresponding adjacent area table, and the system is also included with lower module：

Sending submodule, sends the corresponding code word in the adjacent area and channel estimation window position to wireless network for base station Controller RNC.

The radio network controller (RNC) goes out this adjacent area pair by following submodule according to the mean value calculation of the RSCP The Interference Signal Code Power of this cell

Interference adjacent area decision sub-module, for being made a look up in the adjacent area table using the corresponding code word in the adjacent area, If the code word is present in the adjacent area table, the adjacent area is judged as interference adjacent area；

Interference user's decision sub-module, during for there is user in the channel estimation window of the interference adjacent area, then judges The user is interference user；

The code channel number statistic submodule of occupancy, for counting the code channel number of the interference CU；

Interference Signal Code Power of this adjacent area to this cellCalculating sub module, for using the code The mean value calculation of road number and the RSCP goes out Interference Signal Code Power of this adjacent area to this cell

Preferably, the received signal code power RSCP computing modules of single void code channel VRU include following submodule：

The linear measure longimetry submodule of channel estimation window CHE_pos, for obtaining the length of the channel estimation window CHE_pos Degree；

The received signal code power RSCP calculating sub modules of single void code channel VRU, for using the channel estimation window CHE_ The length of pos and aggregate channel impulse response impulse (i)^CHE_pos, calculate the adjacent area and reach the single empty of this cell The received signal code power RSCP of code channel VRU.

Interference Signal Code Power of this adjacent area to this cell is calculated using below equation

In order to solve the above problems, the invention also discloses a kind of RNC for detecting TD-SCDMA network co-channel interference, Characterized in that, the TD-SCDMA network includes this cell and adjacent area, described RNC includes：

Receiver module, for receiving the meansigma methodss of the RSCP of base station transmission；The meansigma methodss of the RSCP are by according to predetermined The time cycle of justice, the calculating adjacent area reaches the meansigma methodss of the received signal code power RSCP of single void code channel VRU of this cell Obtain；The received signal code power RSCP of single void code channel VRU is calculated by the channel estimation window for adjacent area activation Obtain；The channel estimation window of the activation by when the Interference Signal Code Power ISCP of this cell is more than the first predetermined threshold value, Channel estimation determination is carried out to adjacent area；The Interference Signal Code Power ISCP is obtained by base station measurement；

Computing module, for going out Interference Signal Code Power of this adjacent area to this cell according to the mean value calculation of the RSCP

Interference reduces module, for the Interference Signal Code Power using described this adjacent area to this cell Carry out disturbing reduction to process.

Preferably, the adjacent area has corresponding code word and channel estimation window position, and described cell has corresponding neighbour Area's table, the system is also included with lower module：

Code word and channel estimation window position receiver module, receive described in the transmission of base station for radio network controller (RNC) Corresponding code word and channel estimation window position；

The computing module includes following submodule：

Submodule is searched in interference adjacent area, for being made a look up in the adjacent area table using the corresponding code word in the adjacent area, If the code word is present in the adjacent area table, the adjacent area is judged as interference adjacent area；

Interference user searches submodule, during for there is user in the channel estimation window of the interference adjacent area, then judges The user is interference user；

Code channel statistic submodule, for counting the code channel number of the interference CU；

Interference Signal Code PowerCalculating sub module, for using the code channel number and described The mean value calculation of RSCP goes out Interference Signal Code Power of this adjacent area to this cell

Compared with prior art, the embodiment of the present invention includes advantages below：

The present invention judges channel estimation window of the adjacent area with the presence or absence of activation by carrying out channel estimation to adjacent area, can To reduce the detection range in interference source, then this is gone out according to the mean value calculation of the RSCP by radio network controller (RNC) Interference Signal Code Power of the adjacent area to this cellUsing interference signal code work(of this adjacent area to this cell RateDisturbed condition of the adjacent area to this cell can accurately be known, then, interference is carried out based on this result and is subtracted It is few to process, therefore in system neighbor cell co-channel interference can be surveyed in the case of any co-channel interference watt level Amount, statistics, so as to be controlled to co-channel interference source, to reduce impact of the co-channel interference to business, and according to statistical number Generation co-channel interference environment is reduced according to the network optimization is carried out.

The present invention is by the way that the corresponding code word in adjacent area and channel estimation window position are sent to radio network controller (RNC), RNC Therefore interference source can be rapidly and accurately detected, so as to be controlled to co-channel interference source, to reduce co-channel interference pair The impact of business, and network optimization reduction generation co-channel interference environment is carried out according to statistical data.

Description of the drawings

The step of Fig. 1 is a kind of embodiment of the method 1 for detecting TD-SCDMA network co-channel interference of present invention flow process Figure；

The step of Fig. 2 is a kind of embodiment of the method 2 for detecting TD-SCDMA network co-channel interference of present invention flow process Figure；

Fig. 3 is a kind of structured flowchart for detecting the base station embodiment of TD-SCDMA network co-channel interference of the present invention；

Fig. 4 is a kind of structured flowchart for detecting the RNC embodiments of TD-SCDMA network co-channel interference of the present invention.

Specific embodiment

It is understandable to enable the above objects, features and advantages of the present invention to become apparent from, it is below in conjunction with the accompanying drawings and concrete real The present invention is further detailed explanation to apply mode.

In order to solve co-channel interference in system, optimize network, need to detect co-channel interference.At present, TD-SCDMA System employs same frequency joint detection algorithm, and joint-detection is Multiuser Detection（Multi-userDetection）One kind. The signal of multiple users is aliasing in time domain and frequency domain in cdma system, is needed on numeric field with certain letter during reception Number separation method comes the Signal separator of each user.The method of Signal separator substantially can be divided into Single-user detection technology and Two kinds of multiuser detection.

In actual CDMA mobile communication system, due to there is certain dependency between each subscriber signal, this is just It is multi-access inference（MAI）The root of presence.The MAI no doubt very littles produced by individual user, but the increase with number of users or The increase of signal power, MAI just becomes a main interference of broadband CDMA communication system.Traditional cdma system Signal separator Method is that MAI is regarded as the same interference of thermal noise, causes signal to noise ratio severe exacerbation, power system capacity also to decline therewith.It is this to incite somebody to action The Signal separator of unique user regards that the signal separation techniques of each independent process are referred to as Single-user detection as（Single- userDetection）.The second filial generation cdma system such as IS-95 actual capacity is just because having used list much smaller than design code channel number User's detection technique.In fact, due to the information comprising many priori, the subscriber channel code for such as knowing, the letter of each user in MAI Road estimation etc., therefore MAI should not be taken as noise processed, it can be utilized to improve the standard of signal separating method True property.So make full use of the prior information in MAI and regard the separation of all subscriber signals the letter of a unified process as Number separation method is referred to as multiuser detection（MD）.According to the difference to MAI processing methods, multiuser detection can divide For Interference Cancellation（Interference Cancellation）And joint-detection（Joint Detection）Two kinds.

Wherein, the basic thought of interference cancellation techniques is decision-feedback, is ruled out wherein from total reception signal first Partial data, according to data and user's spreading code the corresponding signal of data is reconstructed, then deducts reconstruct from total reception in signal Signal, such loop iteration.

Associated detection technique then refers to make full use of MAI, all separates the signal of all users within a step A kind of signal separation techniques, it has become the focus in current G mobile communication.

Traditional detection technique expands respectively fully according to the theoretical signal to each user of classical DSSS Frequency code matching treatment, its receiving terminal with one and send address code（Waveform）The matched filter for matching（Correlator）To realize Signal separator, the directly demodulation judgement after correlator.If matched filtering uses the waveform correlation for combining channel response, Be the equal of RAKE receiver, realize the effect responded using multipath.This method only in the case of ideal quadrature, The impact of multi-access inference can be completely eliminated, for it is non-ideal orthogonal in the case of, multi-access inference will necessarily be produced, so as to cause error code The raising of rate.The associated detection technique adopted in TD-SCDMA system is on the basis of traditional sensing techniques, to make full use of and make It is into all subscriber signals and its prior information of multipath of MAI interference, the separation of subscriber signal is unified mutual as one The joint detection process of association completing, so as to excellent interference free performance, reduce system to power control accuracy Require, therefore can more efficiently utilize uplink spectrum resource, significantly increase power system capacity.

The channel estimation of joint-detection is carried out using equation below：

E=Ad+n, wherein e represent the data that base station receives, A representing matrixs, and d represents the primary signal that user sends, n Represent white Gaussian noise.

The purpose of joint-detection is exactly primary signal d that the A and e in above formula estimates user's transmission.A is useful by institute The spread-spectrum codes at family and channel impulse response are determined, therefore the premise of joint detection algorithm is the spread-spectrum codes that can obtain all users And channel impulse response.It is provided with the training sequence for carrying out channel estimation in TD-SCDMA system in the frame structure Midamble, is just estimated that channel impulse is rung according to the training sequence part signal and known training sequence that receive Should, and spread-spectrum codes are also what is known, then can just reach the purpose for estimating user's primary signal d.

Find in the actual motion of existing network, as customer volume, portfolio are significantly increased, co-channel interference is to quality of service Impact clearly.Due to the deficiency of the work such as plot planning, optimization, and the factor such as website practical situation, existing network reality The Jing co-channel interferences that often detectable adjacent area user causes are maximum in measurement, positioning is up to -60dbm, co-channel interference signal power It has been much larger than local area subscriber signal power.Such case is beyond the performance range of same frequency joint inspection algorithm, current connection Inspection algorithm has been difficult to the impact for overcoming this interference to cause demodulation.The method for needing to consider fundamentally to reduce interference.But Current Power Control and wireless resource management algorithm is all based on the measurement result to this cell itself to be carried out, without reference to right The control in interference source.

Current Power Control is simply carried out in cell, and power control is all, with reference to this cell measurement, to control this community user. When being affected by co-channel interference, it is impossible to effectively reduce the power in interference source, can only lifting this community user power put up a resistance.This Sample is more effective in network load hour, but, can cause significantly to disturb transmission effects when network load is big, cause sheet Area interference lifting, the overall quality of service of network may be affected on the contrary.

Current wireless resource management algorithm is also based on the interferometry to this cell to carry out interference coordination, evade height Interference time slot etc., but due to being not involved with disturbing the control in source itself, effect is limited.

On the other hand, although there is serious co-channel interference in network, without effectively assessment data and means.Net Disturbed condition in network is typically judged with the ISCP measurements of network, but this has reacted the overall interference situation of network, Can not distinguish disturbed outside co-channel interference or system, also not know the concrete source of co-channel interference, and network optimization does not have Targetedly, it is unfavorable for the carrying out of network optimization, and the exclusion of co-channel interference.

Therefore, one of the core concepts of the embodiments of the present invention is to have exceeded with frequency joint inspection scheduling algorithm in co-channel interference During performance range, it is considered to disturbing source to be controlled, source is disturbed firstly the need of detecting to disturbing source to be controlled, Then homogeneous-frequency adjacent-domain interference is measured, is counted, the real-time management for carrying out Radio Resource based on measurement, statistical data reduces dry The generation disturbed, also according to statistical data the network optimization is carried out, and reduces the generation of interference environment.

With reference to Fig. 1, show that the present invention's is a kind of for detecting the embodiment of the method 1 of TD-SCDMA network co-channel interference Flow chart of steps, the TD-SCDMA network includes this cell and adjacent area, specifically may include steps of：

Step 101, the Interference Signal Code Power ISCP of base station measurement this cell；

Interference Signal Code Power ISCP is that network carries out dynamic channel configuration（DCA）One of major parameter of consideration is needed, Its measurement can be based on the training sequence code in time slot（Midamble）, Interference Signal Code Power ISCP can be equal to given time slot The all training sequence code power for inside receiving deduct useful signal code power.Since in code-division multiplexing system, each use The output at family all will form interference to other users in time slot, so, system can be measured with Interference Signal Code Power ISCP Parameter is weighing interference of other signals to this user in time slot.

In being applied to the embodiment of the present invention, the calculating of the Interference Signal Code Power ISCP of this cell includes training sequence code portion Divide and data division, wherein, the training sequence code part of the Interference Signal Code Power ISCP of this cell can adopt reception bandwidth General power deducts the effective tap power of channel estimation and calculates acquisition；The data division of the Interference Signal Code Power ISCP of this cell can To deduct the received signal code power RSCP of this cell using received bandwidth total power（Received Signal Code Power）Calculate and obtain.

The received signal code power RSCP of this cell can be that user place channel is estimated in the result that this cell channel is estimated Effective tap of meter window（Pulse）Power sum, it is possible to use composite signal impulse response is calculated.

Measurement for ISCP, popular at present has five kinds of different algorithms, is respectively sky window method, RSSI-RSCP Method, 16 values for subtracting maximum, the maximum for subtracting every window, 8 values minimum per window.To more fully understand those skilled in the art The present invention, simply introduces below its principle：

Empty window method：By seeking the power in each impulse response window and sorting, it is believed that the window of power and minimum is empty window, The power of this sky window be obtained ISCP values with expanding to be calculated on 128 chip chip.

RSSI-RSCP methods：The algorithm utilizes RSSI（Received signal strength indicator）The value for deducting RSCP carrys out approximate ISCP surveys Value.Can be calculated according to below equation

Wherein, D is noise coefficient, P=128.

Subtract maximum 16 values：The program obtains first the performance number of 128 chip in channel impulse response, and maximum 16 values are ranked up, and remaining power is sued for peace and expanded on 128 chip.Mainly consider the value of main footpath and multipath all Cut, do not calculate in ISCP；The multipath specified due to standard is at most with regard to 3, it is contemplated that not necessarily each window is activated, institute Just have selected 16 points of maximum.

Subtract every window maximum：The point of the power maximum of each impulse response window is obtained, remaining point is sought into power and simultaneously Expand on 128 points, i.e.,

Wherein, K is the number of impulse response window.

The minimum 8 points value per window：The method it is artificial 128 points are uniformly divided into into 8 windows, then the point of every window is asked Power and and sort, finally by 8 points of minimum of each window ask power and and expand on 128 points.

Certainly, the metering system of the Interference Signal Code Power ISCP of above-mentioned cell is intended only as example, is implementing this During bright embodiment, the metering system of the Interference Signal Code Power ISCP of other this cells can be set according to practical situation, this Bright embodiment is not any limitation as to this.In addition, in addition to the metering system of the Interference Signal Code Power ISCP of above-mentioned cell, this Art personnel can also according to actual needs adopt the metering system of the Interference Signal Code Power ISCP of other this cells, this Inventive embodiments are not also any limitation as to this.

Step 102, when the Interference Signal Code Power ISCP of described cell is more than the first predetermined threshold value, is carried out to adjacent area Channel estimation, judges channel estimation window of the adjacent area with the presence or absence of activation；

In actual applications, the first predetermined threshold value can be arranged voluntarily according to practical situation, in concrete application of the present invention In a kind of preferred exemplary, first predetermined threshold value can be [- 50dBm, -110dBm].

Channel estimation is exactly the model parameter estimation process out of certain channel model that it will be assumed from receiving data. By channel estimation, receiver can obtain aggregate channel impulse response.

Channel estimation window tap power is calculated according to the result of channel estimation, i.e. the modulus value of aggregate channel impulse response Result after squared.

The channel estimation window of activation is judged according to channel estimation window tap power size, as channel estimation window CHE_ When the tap power of pos is more than the second predetermined threshold value, then judge that the adjacent area has the channel estimation window of activation, otherwise, it is determined that There is no the channel estimation window of activation in the adjacent area.

When the Interference Signal Code Power ISCP of this cell is more than the first predetermined threshold value, continue adjacent area interferometry process, I.e. according to channel estimation is carried out to adjacent area, channel estimation window tap power is calculated using the result of channel estimation, estimated according to channel Meter window tap power judges channel estimation window of the adjacent area with the presence or absence of activation；When the Interference Signal Code Power ISCP of this cell does not surpass When crossing the first predetermined threshold value, terminate adjacent area interferometry process.

It is described that channel estimation is carried out to adjacent area in a kind of preferred exemplary of the present invention, judge that the adjacent area whether there is The step of channel estimation window of activation, can specifically include following sub-step：

Sub-step S201, obtains the code word of the adjacent area；

The code word of the adjacent area can identify different cells, and adopting the corresponding code word of the cell to carry out channel estimation can be with Obtain the channel estimation results of respective cell.

Sub-step S202, according to the code word of the adjacent area, to the adjacent area channel estimation is carried out, and obtains channel estimation window position Put and the adjacent area channel estimation window CHE_pos aggregate channel impulse response impulse (i)^CHE_pos；

Sub-step S203, using aggregate channel impulse response impulse (i)^CHE_posCalculate the channel of the adjacent area The tap power of estimating window CHE_pos；

Sub-step S204, judges whether the tap power of the channel estimation window CHE_pos of the adjacent area is default more than second Threshold value, if so, then performs sub-step S205；Otherwise, sub-step S206 is performed；

As a kind of example of embodiment of the present invention concrete application, second preset threshold range can for [- 50dBm, -110dBm].

Sub-step S205, judges that the adjacent area has the channel estimation window of activation；

Sub-step S206, judges that the adjacent area does not have the channel estimation window of activation.

For example, if cell_code_id (i) is the code word of i-th adjacent area, according to code word cell_code_id (i) adopt with Lower formula carries out channel estimation：

com_impulse_response_{CHE_pos}=256IFFT(256FFT(midamble_data*midamble_inv_ Code)) wherein, com_impulse_response_{CHE_pos}For the result of the impulse response of joint-detection, i.e. channel estimation, Midamble_inv_code is the inverse of basic midamble codes FFT result；Midamble_data is to receive signal Midamble partial datas.

The aggregate channel pulse of the channel estimation window CHE_pos of i-th adjacent area is calculated by the result of channel estimation Response：

Wherein, impulse (i)^CHE_posFor aggregate channel impulse response, CHE_pos is channel estimation window position, K_VRUFor Corresponding empty code channel number,For empty code channel K_VRUThe spreading factor in corresponding real code road, com_impulse_ response_{CHE_pos}For the impulse response of joint-detection.

Aggregate channel impulse response can utilize the corresponding empty code of spreading code, empty code and scrambler according to code channel occupancy situation After multiplication, channel impulse response corresponding with empty code carries out convolution and obtains.

Base station is unknown to adjacent area code channel occupancy situation, it is assumed that when carrying out channel estimation to the adjacent areaCan unify Take 16, K_VRUCan unify to take 1, in this case, adjacent area i aggregate channel impulse responses are reduced to：

impulse(i)^CHE_pos=com_impulse_response_{CHE_pos}

J-th tap power P (j) is calculated according to adjacent area i aggregate channel impulse responses：

P(j)=||com_impulse_response_{CHE_pos}(j)||²

In being applied to the embodiment of the present invention, after obtaining the code word of adjacent area, channel estimation is carried out to adjacent area, calculate the letter of adjacent area Aggregate channel impulse response impulse (i) of road estimating window CHE_pos^CHE_pos, obtain impulse (i)^CHE_pos=com_ impulse_response_{CHE_pos}, using channel impulse response impulse (i)^CHE_posCalculate the channel estimation window CHE_ of adjacent area The size of tap power P (j) of pos, when tap power P (j) is more than the second predetermined threshold value, judges that adjacent area has the letter of activation Road estimating window, otherwise, it is determined that adjacent area does not have the channel estimation window of activation.

Certainly, the judgment mode of the mode of above-mentioned channel estimation and the channel estimation window of activation is intended only as example, Implement the embodiment of the present invention when, can to arrange other channel estimations according to practical situation in the way of and activation channel estimation window Judgment mode, the embodiment of the present invention is not any limitation as to this.In addition, except the mode and the letter of activation of above-mentioned channel estimation Outside the judgment mode of road estimating window, those skilled in the art can also according to actual needs adopt the mode of other channel estimations with And the judgment mode of the channel estimation window of activation, the embodiment of the present invention is not also any limitation as to this.

Step 103, if the adjacent area has the channel estimation window of activation, for the channel estimation window of adjacent area activation Calculate the received signal code power RSCP that the adjacent area reaches single void code channel VRU of this cell；

In embodiments of the present invention, the received signal code power RSCP computational methods of local area and adjacent area are just the same, simply Code word is different；The occupancy situation of all resources of local area is known in local area base station, and for adjacent area, does not then know all resources in adjacent area Occupancy situation, and each empty code channel（VRU）The empty code of correspondence one, the received signal power of each empty code channel can be using correspondence Impulse response be calculated, therefore, base station only can calculate connecing for single void code channel VRU according to the impulse response of channel estimation window Receiving number power RSCP.

In a kind of preferred exemplary of the embodiment of the present invention, the step 103 can specifically include following sub-step：

Sub-step S301, obtains the length of the channel estimation window CHE_pos；

Sub-step S302, the length and the aggregate channel impulse response using the channel estimation window CHE_pos impulse(i)^CHE_pos, calculate the received signal code power RSCP that the adjacent area reaches single void code channel VRU of this cell.

In a particular application, channel estimation window is constructed by the basic Midamble codes that length is 128 chips. Midamble may be located at the middle part of time slot, a length of 144 chip（chip）.Among these Midamble is related to parameter K, and K =2,4,6,8,10,12,14,16, real network it is most-often used be K=8.When parameter K=8, commonly referred to as now there are 8 Channel estimation window, the length of each channel estimation window is 16 chips.

Assume a length of W of channel estimation window, then aggregate channel impulse response length is 16+W-1, the channel estimation window of adjacent area i The corresponding single VRU received signal code powers P of CHE_pos_i(CHE_pos) it is：

Wherein, j for adjacent area i channel estimation window CHE_pos j-th tap, com_impulse_response_{CHE_pos} For the result of channel estimation, i.e. aggregate channel impulse response impulse (i)^CHE_pos, namely the impulse response of joint-detection.

Certainly, the calculation of the received signal code power RSCP of single void code channel VRU of above-mentioned cell is intended only as showing Example, when the embodiment of the present invention is implemented, can arrange the reception signal of single void code channel VRU of other this cells according to practical situation The calculation of code power RSCP, the embodiment of the present invention is not any limitation as to this.In addition, except single void code channel of above-mentioned cell Outside the calculation of the received signal code power RSCP of VRU, those skilled in the art can also according to actual needs adopt other The calculation of the received signal code power RSCP of single void code channel VRU of this cell, the embodiment of the present invention is not also limited this System.

Step 104, according to the predefined time cycle, calculates the meansigma methodss of the RSCP, and by the average of the RSCP Value is sent to radio network controller (RNC)；

Wherein, the radio network controller (RNC) is used to go out this adjacent area to originally little according to the mean value calculation of the RSCP The Interference Signal Code Power in areaAnd the Interference Signal Code Power using described this adjacent area to this cellCarry out disturbing reduction to process.

In implementing, the predefined time cycle can be any according to being actually needed by those skilled in the art It is determined that, the invention is not limited in this regard.

Radio network controller（RNC, Radio Network Controller）It is a crucial net of emerging 3G network Unit.It is the ingredient of access network, for providing mobile management, call treatment, url management and handover mechanism.For reality Existing these functions, RNC must utilize outstanding reliability and predictable performance, perform a whole set of complexity with linear speed and require severe The protocol processing task at quarter.

Calculate the received signal code power P of single void code channel VRU of predefined time cycle_i(CHE_pos) average Value, works as P_i(CHE_pos) meansigma methodss are reached when reporting thresholding and reaching report cycle, then report RNC, and management station is standby Look into.According to P_i(CHE_pos) mean value calculation goes out Interference Signal Code Power of this adjacent area to this cell Based on this result, wireless resource management algorithm, power control algorithms are applied to, reduce the interference that interference user causes to this cell.Together When to it is calculated interference a point adjacent area count, to provide data for the network optimization.

Wherein, report cycle can voluntarily be arranged by those skilled in the art according to practical situation, generally 100ms magnitudes , maximum is usually no more than 2s.In embodiments of the present invention, report cycle can be preferably 100ms.

Report the thresholding can be for [20ms, 2000s], preferably 100ms.

Used as a kind of example that the present invention is implemented, base station can also be by the corresponding code word in the adjacent area and channel estimation Window position is sent to radio network controller (RNC).

In a particular application, that is, P is being worked as_i(CHE_pos) arithmetic mean of instantaneous value reaches and reports thresholding and reach report cycle When, base station sends the corresponding code word in adjacent area and channel estimation window position to radio network controller (RNC).

In this case, described cell has corresponding adjacent area table, and the radio network controller (RNC) is by following Sub-step goes out Interference Signal Code Power of this adjacent area to this cell according to the mean value calculation of the RSCP

Sub-step S401, using making a look up in the corresponding code word adjacent area table in the adjacent area, if the code word is present in institute In stating adjacent area table, then the adjacent area is judged as interference adjacent area；

Sub-step S402, when there is user in the channel estimation window of the interference adjacent area, then judges the user as dry Disturb user；

Sub-step S403, counts the code channel number of the interference CU；

Sub-step S404, this adjacent area is gone out to this cell using the mean value calculation of the code channel number and the RSCP Interference Signal Code Power

In a particular application, RNC searches adjacent area i according to adjacent area code word cell_code_id (i) for reporting, and RNC is according to neighbour Area's code word searches this cell adjacent area table, matches the interference adjacent area interfered to this cell；If adjacent area code word is present in this cell In the table of adjacent area, then the adjacent area is judged as interference adjacent area.RNC is found behind interference adjacent area, according to channel estimation window position CHE_ Pos, searches interference user.

If now user can be found in the corresponding CHE_pos windows of cell i, taken according to the actual channel of interference user Situation calculates ISCP of the interference user to this cell, i.e. Interference Signal Code Power of this adjacent area to this cell Wherein, Interference Signal Code Power of this adjacent area to this cellMeansigma methodss equal to the RSCP of single VRU are multiplied by User is actual to take VRU numbers.Now disturb user'sAnd K_VRU, it is known that then in the CHE of all CHE_pos windows in adjacent area Interference Signal Code Power of the user to this adjacent area of this cell to this cellFor：

Wherein, P_i(CHE_pos)_VRUThe received signal code power of single void code channel VRU of this cell is reached for the adjacent area RSCP, K_VRUFor the corresponding empty code channel numbers of channel estimation window CHE_pos,For empty code channel K_VRUThe expansion in corresponding real code road The frequency factor, CHE is the number of the channel estimation window CHE_pos.

If now user can not be found in the corresponding CHE_pos windows of cell i, do not calculate, do not count this window and cause Interference.

Certainly, Interference Signal Code Power of above-mentioned this adjacent area to this cellCalculation simply make For example, when the embodiment of the present invention is implemented, other interference signals of this adjacent area to this cell can be arranged according to practical situation Code powerCalculation, the embodiment of the present invention is not any limitation as to this.In addition, except above-mentioned this neighbour Interference Signal Code Power of the area to this cellCalculation outside, those skilled in the art can be with root According to being actually needed using other Interference Signal Code Powers of this adjacent area to this cellCalculation, this Inventive embodiments are not also any limitation as to this.

The present invention judges channel estimation window of the adjacent area with the presence or absence of activation by carrying out channel estimation to adjacent area, can To reduce the detection range in interference source, then this is gone out according to the mean value calculation of the RSCP by radio network controller (RNC) Interference Signal Code Power of the adjacent area to this cellUsing interference signal code work(of this adjacent area to this cell RateAdjacent area resource occupation state can accurately be known, interference source is detected, and, accurately calculate dry The received signal code power of user is disturbed, then, carries out disturbing reduction to process based on this result, therefore can be arbitrarily same in system In the case of frequency jamming power size neighbor cell co-channel interference is measured, counted, so as to carry out to co-channel interference source Control, to reduce impact of the co-channel interference to business, and carry out the network optimization according to statistical data generation co-channel interference is reduced Environment.

With reference to Fig. 2, the step of show a kind of embodiment of the method 2 of detection TD-SCDMA network co-channel interference of the present invention Flow chart, the TD-SCDMA network includes this cell and adjacent area, specifically may include steps of：

Step 201, radio network controller (RNC) receives the meansigma methodss of the RSCP that base station sends；The meansigma methodss of the RSCP By according to the predefined time cycle, calculating the received signal code power that the adjacent area reaches single void code channel VRU of this cell The meansigma methodss of RSCP are obtained；The received signal code power RSCP of single void code channel VRU is by for the letter of adjacent area activation Road estimating window is calculated and obtained；The channel estimation window of the activation is by the Interference Signal Code Power ISCP when this cell more than first During predetermined threshold value, channel estimation determination is carried out to adjacent area；The Interference Signal Code Power ISCP is obtained by base station measurement；

Step 202, according to the mean value calculation of the RSCP Interference Signal Code Power of this adjacent area to this cell is gone out

Step 203, using Interference Signal Code Power of described this adjacent area to this cellDisturbed Reduction is processed.

In a particular application, disturbing reduction to process can include carrying out RRM, it is to avoid this user continues to neighbour Area causes severe jamming, the generation of co-channel interference in reduction system, and counts by the cycleIt is average Value, exports statistical data, and for the network optimization data basis are provided, and is conducive to network optimization.

In a kind of preferred exemplary of the embodiment of the present invention, the adjacent area has corresponding code word and channel estimation window position Put, described cell has corresponding adjacent area table, described method specifically can also be comprised the following steps：

In implementing, the step 202 can specifically include following sub-step：

Sub-step S501, is made a look up using the corresponding code word in the adjacent area in the adjacent area table, if the code word is deposited In being the adjacent area table, then the adjacent area is judged as interference adjacent area；

Sub-step S502, when there is user in the channel estimation window of the interference adjacent area, then judges the user as dry Disturb user；

Sub-step S503, counts the code channel number of the interference CU；

Sub-step S504, this adjacent area is gone out to this cell using the mean value calculation of the code channel number and the RSCP Interference Signal Code Power

In embodiments of the present invention, the meansigma methodss of the RSCP that RNC can be reported according to base station, corresponding code word and channel are estimated Meter window position detects the interference user interfered to this cell, i.e. interference source, also, measures the big of interference source It is little.So as to be controlled to co-channel interference source, to reduce impact of the co-channel interference to business, and carried out according to statistical data The network optimization is reduced and produces co-channel interference environment.

To make those skilled in the art more fully understand the present invention, below by way of a specific example to the embodiment of the present invention It is described further.

If this cell is Cell₀, adjacent area is Cell_i, i=1 ..., N.

Base station process step：

Step 1：This cell Cell₀Normal joint inspection process is carried out, this cell Cell is calculated₀The measurement amount such as ISCP；

Step 2：If Cell₀ISCP higher than setting thresholding I_threshold（That is the first predetermined threshold value）, then step is continued 3, otherwise terminate adjacent area interferometry process；

Step 3：To Cell_i, i=1 ..., N carries out channel estimation；

Step 4：To adjacent area Cell_i, i=1 ..., N determine whether activate channel estimation window, if having, continue step 5；If no, terminating adjacent area interferometry process；

Step 5：P is calculated to the channel estimation window of adjacent area activation_Celli(CHE_pos)；

Step 6：Cycle average P_Celli(CHE_pos), P is worked as_Celli(CHE_pos) meansigma methodss reach and report thresholding and reach During to report cycle, then by P_Celli(CHE_pos) meansigma methodss, adjacent area code word, channel estimation window position CHE_pos report RNC, And management station is for future reference.

RNC process steps：

Step I：RNC finds adjacent area Cell according to adjacent area code word cell_code_id (i) for reporting_iIf can not find neighbour Area Cell_i, then the process to this reporting measurement item is terminated；If finding adjacent area Cell_i, then step 2 is continued；

Step II：According to P_Celli(CHE_pos) the channel estimation window position CHE_pos that meansigma methodss are located is in adjacent area Cell_iIt is middle to search interference user；

Step III：If now can not be in adjacent area Cell_iCorresponding CHE_pos windows find user, then terminate this and report The process of measurement item；If now in adjacent area Cell_iCorresponding CHE_pos windows find user, and the user as disturbs user, then Continue step 4；

Step IV：Interference Signal Code Power is calculated according to the actual channel occupancy situation of interference user

Step V：According toCarry out RRM, it is to avoid this user continues to cause sternly adjacent area Disturb again；

Step VI：To each adjacent areaBy cycle statistical average, statistical data is exported.

In this example, base station judges the interference of this cell whether more than the first predetermined threshold value by measuring ISCP, when ISCP carries out channel estimation more than adjacent area interferometry process is entered during the first predetermined threshold value to adjacent area, judges whether The channel estimation window of activation, when there is the channel estimation window of activation, the single VRU for calculating the channel estimation window of the activation receives letter Same level P_Celli(CHE_pos), P is worked as_Celli(CHE_pos) meansigma methodss are reached when reporting thresholding and reaching report cycle, then By P_Celli(CHE_pos) meansigma methodss, adjacent area code word, channel estimation window position CHE_pos report RNC, by the participation of RNC, Adjacent area resource occupation state can accurately be known, i.e., detect that interference is little by code word and channel estimation window position CHE_pos Area and interference user, also, accurately calculate the received signal code power of interference user, i.e., using P_Celli(CHE_pos) flat The code channel number of average and interference CU is calculated disturbs signal code powerBased on real-time adjacent area Interference measure carries out more effective RRM to adjacent area, the generation of co-channel interference in reduction system, in network Co-channel interference provides interference source, and the detailed data of statistics interference size is conducive to network optimization.

Certainly, the detection mode of above-mentioned co-channel interference is intended only as example, when the embodiment of the present invention is implemented, can basis Practical situation arranges the detection mode of other co-channel interferences, and the embodiment of the present invention is not any limitation as to this.In addition, except above-mentioned same Outside the detection mode of frequency interference, those skilled in the art can also according to actual needs using the detection side of other co-channel interferences Formula, the embodiment of the present invention is not also any limitation as to this.

It should be noted that for embodiment of the method, in order to be briefly described, therefore it to be all expressed as a series of action group Close, but those skilled in the art should know, and the embodiment of the present invention is not limited by described sequence of movement, because according to According to the embodiment of the present invention, some steps can adopt other orders or while carry out.Secondly, those skilled in the art also should Know, embodiment described in this description belongs to preferred embodiment, the involved action not necessarily present invention is implemented Example is necessary.

With reference to Fig. 3, show that the present invention's is a kind of for detecting the base station embodiment of TD-SCDMA network co-channel interference Structured flowchart, the TD-SCDMA network includes this cell and adjacent area, specifically can include such as lower module：

The Interference Signal Code Power ISCP measurement modules 301 of this cell, for measuring the Interference Signal Code Power of this cell ISCP；

The channel estimation window judge module 302 of activation, for exceeding in the Interference Signal Code Power ISCP of described cell During the first predetermined threshold value, channel estimation is carried out to adjacent area, judge channel estimation window of the adjacent area with the presence or absence of activation；

The received signal code power RSCP computing modules 303 of single void code channel VRU, for the letter that there is activation in the adjacent area During road estimating window, reach single void code channel VRU's of this cell for the channel estimation window calculating adjacent area that the adjacent area is activated Received signal code power RSCP；

Interference Signal Code Power of this adjacent area to this cellComputing module 304, for according to predetermined The time cycle of justice, the meansigma methodss of the RSCP are calculated, and the meansigma methodss of the RSCP are sent to into radio network controller RNC；Wherein, the radio network controller (RNC) is used to go out this adjacent area to this cell according to the mean value calculation of the RSCP Interference Signal Code PowerAnd the Interference Signal Code Power using described this adjacent area to this cellCarry out disturbing reduction to process.

In a kind of preferred exemplary of the embodiment of the present invention, the channel estimation window judge module 302 of the activation can be wrapped Include following submodule：

Acquisition submodule, for obtaining the code word of the adjacent area；

In a kind of preferred exemplary of the embodiment of the present invention, the letter of the adjacent area is calculated the adjacent area by below equation Aggregate channel impulse response impulse (i) of road estimating window CHE_pos^CHE_posIf cell_code_id (i) is i-th adjacent area Code word, channel estimation is carried out according to code word cell_code_id (i), then the single-code channel channel estimation window CHE_ of i-th adjacent area The aggregate channel impulse response of pos is：

In a kind of preferred exemplary of the embodiment of the present invention, described cell has corresponding adjacent area table, and the system is also Can include with lower module：

In a kind of preferred exemplary of the embodiment of the present invention, the received signal code power RSCP meters of single void code channel VRU Calculating module 303 can specifically include following submodule：

In a kind of preferred exemplary of the embodiment of the present invention, by below equation using the code channel number and described The mean value calculation of RSCP goes out Interference Signal Code Power of this adjacent area to this cell

For the system embodiment shown in Fig. 3, due to itself and the embodiment of the method basic simlarity shown in Fig. 1, so Fairly simple, the part explanation of the related part referring to embodiment of the method for description.

With reference to Fig. 4, a kind of knot for detecting the RNC embodiments of TD-SCDMA network co-channel interference of the present invention is shown Structure block diagram, the TD-SCDMA network includes this cell and adjacent area, specifically can include such as lower module：

Receiver module 401, for receiving the meansigma methodss of the RSCP of base station transmission；The meansigma methodss of the RSCP are by according to pre- The time cycle of definition, the calculating adjacent area reaches the average of the received signal code power RSCP of single void code channel VRU of this cell Value is obtained；The received signal code power RSCP of single void code channel VRU is by for the channel estimation window meter of adjacent area activation Calculate and obtain；The channel estimation window of the activation is by the Interference Signal Code Power ISCP when this cell more than the first predetermined threshold value When, channel estimation determination is carried out to adjacent area；The Interference Signal Code Power ISCP is obtained by base station measurement；

Computing module 402, for going out interference signal code of this adjacent area to this cell according to the mean value calculation of the RSCP Power

Interference reduces module 403, for the Interference Signal Code Power using described this adjacent area to this cell Carry out disturbing reduction to process.

In a kind of preferred exemplary of the embodiment of the present invention, the adjacent area has corresponding code word and channel estimation window position Put, described cell has corresponding adjacent area table, and the system can also be included with lower module：

The computing module 402 can specifically include following submodule：

For the system embodiment shown in Fig. 4, due to itself and the embodiment of the method basic simlarity shown in Fig. 2, so Fairly simple, the part explanation of the related part referring to embodiment of the method for description.

Each embodiment in this specification is described by the way of progressive, what each embodiment was stressed be with The difference of other embodiment, between each embodiment identical similar part mutually referring to.

Those skilled in the art are it should be appreciated that the embodiment of the embodiment of the present invention can be provided as method, device or calculate Machine program product.Therefore, the embodiment of the present invention can using complete hardware embodiment, complete software embodiment or with reference to software and The form of the embodiment of hardware aspect.And, the embodiment of the present invention can using wherein include computer at one or more can With in the computer-usable storage medium (including but not limited to disk memory, CD-ROM, optical memory etc.) of program code The form of the computer program of enforcement.

The embodiment of the present invention is with reference to method according to embodiments of the present invention, terminal unit (system) and computer program The flow chart and/or block diagram of product is describing.It should be understood that can be by computer program instructions flowchart and/or block diagram In each flow process and/or square frame and flow chart and/or the flow process in block diagram and/or square frame combination.These can be provided Computer program instructions to general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing terminals set Standby processor is producing a machine so that held by the processor of computer or other programmable data processing terminal equipments Capable instruction is produced for realizing in one flow process of flow chart or one square frame of multiple flow processs and/or block diagram or multiple square frames The device of the function of specifying.

These computer program instructions may be alternatively stored in can guide computer or other programmable data processing terminal equipments In the computer-readable memory for working in a specific way so that the instruction being stored in the computer-readable memory produces bag The manufacture of command device is included, the command device is realized in one side of one flow process of flow chart or multiple flow processs and/or block diagram The function of specifying in frame or multiple square frames.

These computer program instructions also can be loaded in computer or other programmable data processing terminal equipments so that On computer or other programmable terminal equipments perform series of operation steps to produce computer implemented process, so as to The instruction performed on computer or other programmable terminal equipments is provided for realizing in one flow process of flow chart or multiple flow processs And/or specify in one square frame of block diagram or multiple square frames function the step of.

Although having been described for the preferred embodiment of the embodiment of the present invention, those skilled in the art once know base This creative concept, then can make other change and modification to these embodiments.So, claims are intended to be construed to Including preferred embodiment and fall into having altered and changing for range of embodiment of the invention.

Finally, in addition it is also necessary to explanation, herein, such as first and second or the like relational terms be used merely to by One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation Between there is any this actual relation or order.And, term " including ", "comprising" or its any other variant meaning Covering including for nonexcludability, so that a series of process, method, article or terminal unit including key elements is not only wrapped Those key elements are included, but also including other key elements being not expressly set out, or also include for this process, method, article Or the key element that terminal unit is intrinsic.In the absence of more restrictions, limited by sentence " including ... " Key element, it is not excluded that also exist in including the process of the key element, method, article or terminal unit it is other it is identical will Element.

Above to a kind of method for detecting TD-SCDMA network co-channel interference provided by the present invention, base station and RNC, It is described in detail, specific case used herein is set forth to the principle and embodiment of the present invention, above reality The explanation for applying example is only intended to help and understands the method for the present invention and its core concept；Simultaneously for the general technology of this area Personnel, according to the thought of the present invention, will change in specific embodiments and applications, in sum, this theory Bright book content should not be construed as limiting the invention.

Claims

1. a kind of method for detecting TD-SCDMA network co-channel interference, it is characterised in that wrap in the TD-SCDMA network This cell and adjacent area are included, described method includes：

When the Interference Signal Code Power ISCP of described cell is more than the first predetermined threshold value, channel estimation is carried out to adjacent area, sentenced Break channel estimation window of the adjacent area with the presence or absence of activation；

If the adjacent area has the channel estimation window of activation, for the channel estimation window of the adjacent area activation adjacent area is calculated Reach the received signal code power RSCP of single void code channel VRU of this cell；

According to the predefined time cycle, the meansigma methodss of the RSCP are calculated, and the meansigma methodss of the RSCP are sent to wirelessly Network controller RNC；Wherein, the radio network controller (RNC) is used to go out this adjacent area according to the mean value calculation of the RSCP Interference Signal Code Power to this cellAnd the interference signal code using described this adjacent area to this cell PowerCarry out disturbing reduction to process.

2. method according to claim 1, it is characterised in that described to carry out channel estimation to adjacent area, judges the adjacent area The step of with the presence or absence of the channel estimation window for activating, includes：

Obtain the code word of the adjacent area；

According to the code word of the adjacent area, channel estimation is carried out to the adjacent area, obtain channel estimation window position and the adjacent area Channel estimation window CHE_pos aggregate channel impulse response impulse (i)^CHE_pos；

Using aggregate channel impulse response impulse (i)^CHE_posThe channel estimation window CHE_pos for calculating the adjacent area takes out Greatest service rate；

Judge that the tap power of channel estimation window CHE_pos of the adjacent area, whether more than the second predetermined threshold value, if so, then judges There is the channel estimation window of activation in the adjacent area, otherwise, it is determined that the adjacent area does not have the channel estimation window of activation.

3. method according to claim 2, it is characterised in that the adjacent area is calculated to the adjacent area by below equation Aggregate channel impulse response impulse (i) of channel estimation window CHE_pos^CHE_posIf cell_code_id (i) is adjacent i-th The code word in area, according to code word cell_code_id (i) channel estimation is carried out, then the channel estimation window CHE_pos of i-th adjacent area Single-code channel aggregate channel impulse response is

i m p u l s e {(i)}^{C H E_p o s} = \sqrt{\frac{16}{{SF}^{(k_{V R U})} * K_{V R U}}} * c o m_i m p u l s e_{response}_{C H E_p o s}

Wherein, CHE_pos be channel estimation window position, K_VRUFor corresponding empty code channel number,For empty code channel number K_VRUCorrespondence Real code road spreading factor, com_impulse_response_{CHE_pos}It is that channel estimation results and spreading code convolution obtain group Close channel impulse response.

4. according to the method in claim 2 or 3, it is characterised in that described cell has corresponding adjacent area table, described Method also includes：

The radio network controller (RNC) goes out this adjacent area to this cell according to the mean value calculation of the RSCP in the following manner Interference Signal Code Power

Made a look up in the adjacent area table using the corresponding code word in the adjacent area, if the code word is present in the adjacent area table In, then the adjacent area is judged as interference adjacent area；

The code channel number of the statistics interference CU；

Interference Signal Code Power of this adjacent area to this cell is gone out using the mean value calculation of the code channel number and the RSCP

5. method according to claim 4, it is characterised in that the channel estimation window for adjacent area activation is calculated The step of adjacent area reaches the received signal code power RSCP of single void code channel VRU of this cell includes：

Obtain the length of the channel estimation window CHE_pos；

Length and aggregate channel impulse response impulse (i) using the channel estimation window CHE_pos^CHE_pos, meter Calculate the received signal code power RSCP that the adjacent area reaches single void code channel VRU of this cell.

6. method according to claim 4, it is characterised in that by below equation using the code channel number and described The mean value calculation of RSCP goes out Interference Signal Code Power of this adjacent area to this cell

P_{i}^{R S C P} (C H E_p o s) = \overset{C H E}{Σ} Σ_{V R U}^{K_{V R U}} (\frac{16}{{SF}^{(k_{V R U})} * K_{V R U}} * P_{i} {(C H E_p o s)}_{V R U})

Wherein, P_i(CHE_pos)_VRUThe received signal code power RSCP of single void code channel VRU of this cell is reached for the adjacent area, K_VRUFor the corresponding empty code channel numbers of channel estimation window CHE_pos,For empty code channel number K_VRUThe spread spectrum in corresponding real code road because Son, CHE is the number of the channel estimation window CHE_pos.

7. a kind of method for detecting TD-SCDMA network co-channel interference, it is characterised in that the TD-SCDMA network includes This cell and adjacent area, described method includes：

Radio network controller (RNC) receives the meansigma methodss of the RSCP that base station sends；The meansigma methodss of the RSCP are by according to predetermined The time cycle of justice, the calculating adjacent area reaches the meansigma methodss of the received signal code power RSCP of single void code channel VRU of this cell Obtain；The received signal code power RSCP of single void code channel VRU is calculated by the channel estimation window for adjacent area activation Obtain；The channel estimation window of the activation by when the Interference Signal Code Power ISCP of this cell is more than the first predetermined threshold value, Channel estimation determination is carried out to adjacent area；The Interference Signal Code Power ISCP is obtained by base station measurement；

8. method according to claim 7, it is characterised in that the adjacent area has corresponding code word and channel estimation window position Put, described cell has corresponding adjacent area table, and described method also includes：

Radio network controller (RNC) receives described corresponding code word and the channel estimation window position that base station sends；It is described corresponding Code word and channel estimation window position are obtained by the base station；

The mean value calculation according to the RSCP goes out Interference Signal Code Power of this adjacent area to this cell The step of include：

The code channel number of the statistics interference CU；

9. a kind of base station for detecting TD-SCDMA network co-channel interference, it is characterised in that the TD-SCDMA network includes This cell and adjacent area, described base station includes：

The Interference Signal Code Power ISCP measurement modules of this cell, for measuring the Interference Signal Code Power ISCP of this cell；

The channel estimation window judge module of activation, for default more than first in the Interference Signal Code Power ISCP of described cell During threshold value, channel estimation is carried out to adjacent area, judge channel estimation window of the adjacent area with the presence or absence of activation；

The received signal code power RSCP computing modules of single void code channel VRU, for the channel estimation that there is activation in the adjacent area During window, for the channel estimation window of the adjacent area activation reception letter that the adjacent area reaches single void code channel VRU of this cell is calculated Same level RSCP；

Interference Signal Code Power of this adjacent area to this cellComputing module, for according to the predefined time In the cycle, the meansigma methodss of the RSCP are calculated, and the meansigma methodss of the RSCP are sent to into radio network controller (RNC)；Wherein, institute Radio network controller (RNC) is stated for going out interference signal code work(of this adjacent area to this cell according to the mean value calculation of the RSCP RateAnd the Interference Signal Code Power using described this adjacent area to this cellCarry out Interference reduction is processed.

10. a kind of RNC for detecting TD-SCDMA network co-channel interference, it is characterised in that the TD-SCDMA network includes This cell and adjacent area, described RNC includes：

Receiver module, for receiving the meansigma methodss of the RSCP of base station transmission；The meansigma methodss of the RSCP are by according to predefined Time cycle, the calculating adjacent area reaches the meansigma methodss of the received signal code power RSCP of single void code channel VRU of this cell and obtains； The received signal code power RSCP of single void code channel VRU is calculated by the channel estimation window for adjacent area activation and obtained； The channel estimation window of the activation by when the Interference Signal Code Power ISCP of this cell is more than the first predetermined threshold value, to adjacent area Carry out channel estimation determination；The Interference Signal Code Power ISCP is obtained by base station measurement；

Interference reduces module, for the Interference Signal Code Power using described this adjacent area to this cellCarry out Interference reduction is processed.