[0111] Example
[0112] The specific process of the multi-network collaborative network optimization method provided in this embodiment is as follows:
[0113] Step 1: Screen the list of energy-saving cells, including the following steps:
[0114] S1: For the area to be optimized, obtain the relationship information of each 2/3/4G network adjacent area, and collect the MR data of each 2/3/4G network standard and various devices on a monthly basis.
[0115] S2: According to the collected MR data and the overlapping coverage calculation formula of different devices, calculate the overlapping coverage of each network cell corresponding to different neighboring cells of 2/3/4G network standards.
[0116] S3: According to the calculation result of the overlapping coverage of each network cell, screen out the overlapping coverage neighboring cells of each network cell (two conditions for overlapping coverage neighboring cells), and take the network cell and its overlapping coverage neighboring cells as the second possible energy-saving cells. /3/4G energy-saving cells are added to the list of energy-saving cells. The list of energy-saving cells includes dormant (closed cells) and corresponding compensation cells.
[0117] Step 2: Calculate the predicted traffic volume of each cell in the energy-saving cell list in the next energy-saving period
[0118] In this embodiment, the energy-saving period is selected as the period of 00:00-06:00 every day. In the previous period of the daily energy-saving period, that is, the current period (18:00-24:00), each energy-saving cell list in the predicted energy-saving cell list The predicted traffic volume of the cell, the predicted traffic volume = the traffic volume in the current period × k + the historical data to predict the traffic volume in the next period.
[0119] In this embodiment, the weight value k is determined according to the time length of the stored traffic volume (historical data) of the previous historical energy saving period of the next energy saving period, and the value of the weight value k is as follows:
[0120] The storage time of historical business data is more than 3 months, K=0.4;
[0121] The storage time of historical business data is less than 3 months but more than 2 months, K=0.5;
[0122] Historical business data storage time is less than 2 months but greater than 1 month, K=0.6
[0123] Historical business data storage time is less than 1 month but more than 1 week, K=0.6
[0124] The storage time of historical business data is less than 1 week, and K=0.7.
[0125] The calculation method of historical data to forecast business volume for the next period is as follows:
[0126] 1. Obtain the historical data storage time according to the stored historical data table. If the historical data storage time meets 3 months, the historical traffic forecast is calculated according to the following formula:
[0127] Historical data predicts the business volume P for the next period h = Average value of business traffic in the same period and next period of the previous first month * 0.3 + Average value of business volume in the same period and next period of the second previous month * 0.2 + Average value of business volume in the same period and next period of the previous 3rd to 6th months * 0.1;
[0128] 2. Obtain the storage time of historical data according to the stored historical data table. If it does not meet the requirements of 3 months and 2 months, the historical traffic forecast is calculated according to the following formula:
[0129] Historical data predicts the business volume P for the next period h = Average value of business traffic in the same period in the first month before and in the next period * 0.3 + Average value of business traffic in the second month and the next period in the previous period * 0.2
[0130] 3. Obtain the storage time of historical data according to the stored historical data table. If it does not meet the requirements of 2 months and 1 month, the historical traffic forecast is calculated according to the following formula:
[0131] Historical data predicts the business volume P for the next period h = Average value of business traffic in the first month and the next period of the previous same period * 0.4;
[0132] 4. Obtain the historical data storage time according to the stored historical data table. If it does not meet one month, the historical traffic forecast is calculated according to the following formula:
[0133] Historical data predicts the business volume P for the next period h = Average value of business traffic in the same period in the previous week and the next period * 0.3.
[0134] Step 3: Screen dormant cells and compensation cells
[0135] Screen qualified dormant cells and compensation cells according to the set shutdown preset conditions and compensation preset conditions. In the present embodiment, the screening for the dormant cells of 2G, 3G and 4G network standards and the compensation cells corresponding to the dormant cells is as follows:
[0136] 1. 2G dormant cell screening process
[0137] 1. Determine whether the predicted traffic volume of the 2G cells in the energy-saving cell list meets the preset conditions for closing. The conditions include: traffic volume per line < 0.2, wireless resource utilization rate < 30%, traffic volume < 3erl, TBF reuse degree < 4. The network cell (source cell) in the energy-saving cell list that meets the conditions can be used as a dormant cell;
[0138] Traffic volume per line = traffic volume/number of available TCH channels;
[0139] Radio resource utilization ratio=(traffic volume+PDCH equivalent traffic volume)/(TCH initial configuration number+PDCH static configuration number)/0.75;
[0140] 2. In the overlapping coverage neighbors of the 2G dormant cells in the energy-saving cell list, screen the 2G compensation cells of the 2G dormant cells: determine to transfer the predicted traffic volume of the next energy-saving period of the 2G cell that satisfies the condition 1 to the corresponding 2G compensation cell After the 2G compensation cell is in the cell, whether the 2G compensation cell satisfies: the traffic volume per line < M2, the wireless resource utilization rate < W2; (Note: if a compensation cell compensates for the services of multiple cells, all compensation services should be accumulated and evaluated), the above If both conditions are satisfied, proceed to the next step, if not, continue to the next period of normal monitoring and screening;
[0141] 3. Sort out the satisfied results of the service prediction screening, and output the list information of the 2G dormant cells and the corresponding 2G compensation cells.
[0142] 2. 3G dormant cell screening process (2G cell compensation)
[0143] 1. Determine whether the predicted traffic volume of the 3G network cells in the list of energy-saving cells meets the preset conditions for closing. The conditions include: voice traffic < Y1, data traffic < S1, code resource utilization < C1, maximum number of users < U1, single user Rate<150kps;
[0144] 2. In the adjacent cells of the 3G dormant cell in the energy-saving cell list, screen the 2G compensation cells of the 3G dormant cell (2G overlapping coverage adjacent cells): judge that the predicted traffic volume of the 3G cell that satisfies the condition 1 will be transferred to the 2G compensation for the next period After the cell, whether the 2G compensation cell satisfies: traffic volume per line < M2, single PDCH bearing efficiency < 20kpbs; (Note: if a compensation cell compensates for multiple cell services, all compensation services should be cumulatively evaluated), the above If both conditions are satisfied, proceed to the next step, if not, continue to the next period of normal monitoring and screening;
[0145] 3. Sort out the satisfied results of the service prediction screening, and output the list information of the 3G dormant cells and the corresponding 2G compensation cells.
[0146] 3. 4G dormant cell screening process 1 (3G compensation cell)
[0147] 1. Determine whether the predicted traffic volume of the 4G cell in the energy-saving cell list meets the preset conditions for closing, including: uplink data flow <5M, downlink data flow <10M, maximum number of users <10, and single-user rate <384kbps;
[0148] 2. In the neighboring cells of the 4G dormant cells in the energy-saving cell list, screen the 3G compensation cells of the 4G dormant cells: after judging that the predicted service for the next period of the 4G cell that satisfies the condition 1 is transferred to the corresponding 3G compensation cell, the 3G compensation cell will be compensated. Whether the cell satisfies: voice service < Y2, data flow < S2, code resource utilization < C2, maximum number of users < U2; (Note: if one compensation cell compensates for multiple cell services, all compensation services should be accumulated and evaluated) , if the above two conditions are satisfied, proceed to the next step, if not, continue the normal monitoring and screening of the next period;
[0149] 3. Sort out the satisfied results of the service prediction screening, and output the list information of the 4G dormant cells and the corresponding 3G compensation cells.
[0150] 4. 4G dormant cell screening process 2 (4G compensation cell)
[0151] 1. Determine whether the predicted traffic volume of the 4G cells in the list of energy-saving cells meets the preset conditions for closing. The conditions include: uplink data flow <10M, downlink data flow <20M, PRB utilization rate <20%, maximum number of users <20; PRB Utilization rate=(the number of PRB resources used by PUSCH+the average number of PRB resources used by PDSCH)/(the number of available PRBs)*100%;
[0152] 2. In the neighboring cells of the 4G dormant cells in the list of energy-saving cells, filter the 4G compensation cells of the 4G dormant cells: after judging that the predicted service for the next period of the 4G cell that satisfies the condition 1 is transferred to the corresponding 4G compensation cell, the 4G compensation cell will be compensated. Whether the cell satisfies: uplink data flow <20M, downlink data flow <40M, maximum number of users <40; (Note: if one compensation cell compensates for multiple cell services, all compensation services should be accumulated and evaluated), the above two conditions If all are satisfied, proceed to the next step, if not, continue to the next period of normal monitoring and screening;
[0153] 3. Sort out the satisfied results of the service prediction screening, and output the list information of the 4G dormant cells and the corresponding 4G compensation cells.
[0154] Through the above screening results, the screening results of the corresponding compensation cells of the dormant cells of each network standard are obtained, which are divided into the following four categories in this embodiment:
[0155] List of 2G dormant cells and corresponding 2G compensation cells;
[0156] List of 3G dormant cells and corresponding 2G compensation cells;
[0157] List of 4G dormant cells and corresponding 3G compensation cells;
[0158] List of 4G dormant cells and corresponding 4G compensation cells.
[0159] In the process of actually screening the dormant cells, the priority order of 2/3/4G energy saving will also be set, and the dormant cells of each network system will be screened according to the set priority information of each network system, and the first priority will be screened first. sleep cells of the first priority system, and then determine the compensation cells of each network system corresponding to the sleep cells of the first priority system; then screen the sleep cells of the second priority system Determine the compensation cells of each network system corresponding to the dormant cells of the second priority system (excluding the dormant cells of the first priority system); then screen the dormant cells of the third priority system and the corresponding compensation cells (excluding the first and second priority systems) dormant cell in priority mode).
[0160] Of course, before the above-mentioned screening of dormant cells and compensation cells, the cells in the energy-saving cell list can be updated by obtaining the black and white cell lists in the network and the monitoring results of each cell in the energy-saving cell list, and some cells that cannot be used as dormant cells can be deleted. and compensation cells, for example, before screening 2G dormant cells, delete black cells and white cells in the energy-saving cell list according to the black and white cell list of the network, and judge the list according to the running status parameters and alarm information of the cells collected periodically. Whether there is a high robbery level alarm or the cell status is inactive in the cell in
[0161] Generally, since the traffic volume of a sleeping cell at the next energy saving time is less than the traffic volume threshold, a dormant cell generally corresponds to only one compensation cell. The cell with the smallest traffic volume at any time is used as the compensation cell. Of course, in practical applications, one dormant cell can also be set to correspond to more than one compensation cell. At this time, it is also necessary to correspondingly set how the traffic of the dormant cell is allocated to different compensation cells after it is closed. on the community.
[0162] Step 4: According to the screening result of Step 3, when the next energy saving time comes, the dormant cell is turned off, and the traffic of the dormant cell is transferred to its corresponding compensation cell.
[0163] In this embodiment, according to the list of dormant cells of each 2/3/4G network obtained in step 3, the dormant cells are closed, and the shutdown process is as follows:
[0164] 1. For the 2G dormant cell list, determine whether it is greater than the threshold N of the number of dormant cells in a single BSC (the maximum number of dormant cells allowed for each BSC is the threshold value), if so, filter the top TOPN threshold cells according to the following rules, and the TOPN is preferred level filtering rules, if not, go to step 5 directly:
[0165] (1) The energy-saving function of the device that is not turned on is preferred; (2) The greater the overlap coverage, the better the priority;
[0166] 2. For the list of 3G dormant cells, determine whether it is greater than the threshold of the number of dormant cells in a single RNC. If so, filter the top TOPN threshold cells according to the following rules, and the TOPN priority screening rules:
[0167] (1) The energy-saving function of the device that is not turned on is preferred; (2) The greater the overlap coverage, the better the priority;
[0168]3. For the list of 4G dormant cells, determine whether it is greater than the threshold of the number of single OMM or SUBNETWORK dormant cells. If so, filter the cells with the top TOPN threshold according to the following rules, and the TOPN priority screening rules:
[0169] (1) The energy-saving function of the device that is not turned on is preferred; (2) The greater the overlap coverage, the better the priority;
[0170] 4. According to the processing result of each network dormant cell, execute the dormant cell instruction for each network dormant cell that satisfies the dormancy condition, and at the same time monitor the instruction execution result;
[0171] 5. Update the list of dormant cells for cells for which the dormancy command is successfully executed;
[0172] 7. Enter the monitoring and compensation cell process.
[0173] Step 5: Monitor the compensation area
[0174] During the daily energy-saving period from 00:00 to 06:00, monitor operation: query the KPI indicators of each compensation cell, if the KPI indicators of the compensation cell are poor (do not meet the preset KPI indicator requirements), then immediately wake up all sleepers corresponding to the compensation cell and determine that if the number of times the KPI difference of the cell is satisfied is greater than N (N is 3 by default), the compensation cell is updated to the blacklist.
[0175] The specific monitoring process is as follows:
[0176] 1. 2G compensation cell monitoring and wake-up process:
[0177] 1. Determine whether the TBF reuse degree of the 2G compensation cell is less than 2, and the single PDCH bearer cell is greater than 45. If so, in order to ensure user service perception, go to step 2, wake up the corresponding 2G dormant cell, if not, go to step 3. Continue to judge;
[0178] 2. Wake up the 2G dormant cell corresponding to the cell. If there are multiple 2G dormant cells, the 2G cell will be woken up first according to the following principles: (1) The first priority to wake up the energy-saving device function is enabled, (2) The same priority is pressed according to the following principles: Wake up sequentially, then go to step 7;
[0179] 3. Continue to judge whether the compensation cell satisfies (traffic volume per line>M4, radio resource utilization>W4) or (TBF reuse degree>4, single PDCH bearing efficiency>30kbps), if so, go to step 4 Wake up all dormant cells corresponding to the compensation cell; if it is not satisfied, go to step 5 and continue to judge;
[0180] 4. Wake up all dormant cells corresponding to the compensation cell, and then enter step 7;
[0181] 5. Continue to judge whether the compensation cell satisfies (traffic volume per line>M3, radio resource utilization>W3) or (TBF reuse degree>4, single PDCH bearing efficiency>20kbps), if so, go to step 6 , wake up a corresponding compensation cell; if no, go to step 7;
[0182] 6. Wake up a dormant cell corresponding to the compensation cell. If the compensation cell corresponds to multiple dormant cells, wake up first according to the following rules: (1) If the compensation cell is of multiple network standards, the priority of the cell with the lower energy saving priority The higher the value; (2) the priority of turning on the energy-saving function of the device is higher, (3) if the priority is the same, it will wake up in sequence;
[0183] 7. Monitor and wake up the cell process;
[0184] 2. 3G compensation cell monitoring and wake-up process:
[0185] 1. Determine whether the compensation cell satisfies (voice service>T4, code resource utilization>C4, maximum number of users>U4), if so, go to step 2 to wake up all dormant cells corresponding to the compensation cell; if not , then enter step 3, continue to judge;
[0186] 2. Wake up all dormant cells corresponding to the compensation cell, and then enter step 5;
[0187] 3. Continue to judge whether the compensation cell satisfies (voice service U3), if so, go to step 4 to wake up a corresponding dormant cell; if not, it is not satisfied , then go to step 5;
[0188] 4. Wake up a dormant cell corresponding to the compensation cell. If the compensation cell corresponds to multiple dormant cells, wake up first according to the following rules: (1) The priority of turning on the energy-saving function of the device is higher, (2) If the priority is the same, the order will be followed. wake;
[0189] 5. Monitor the process of waking up the cell;
[0190] 3. 4G compensation cell monitoring and wake-up process:
[0191] 1. Determine whether the compensation cell satisfies (PRB utilization rate>P2, maximum number of users>L2, RAB failure times>10), if so, go to step 2 to wake up all dormant cells corresponding to the compensation cell; if not satisfied , then enter step 3, continue to judge;
[0192] 2. Wake up all dormant cells corresponding to the compensation cell, and then enter step 5;
[0193] 3. Continue to judge whether the compensation cell satisfies (PRB utilization ratio>P1, maximum number of users>L1), if yes, go to step 4, wake up a corresponding dormant cell; if not, go to step 5;
[0194] 4. Wake up a dormant cell corresponding to the compensation cell. If the compensation cell corresponds to multiple dormant cells, wake up first according to the following rules: (1) If the energy-saving cell has multiple network standards, the cell with the lower energy-saving priority will be prioritized. The higher the value; (2) the priority of turning on the energy-saving function of the device is higher, (3) if the priority is the same, it will wake up in sequence;
[0195] 5. Monitor the process of waking up the cell;
[0196] In this embodiment, the above-mentioned process of monitoring the wake-up cell is as follows:
[0197] 1. After executing the command to wake up the cell, start from the 2nd minute, print the LOG command every 1 minute to check whether the cell is activated successfully, if so, go to step 4, if not, go to step 2;
[0198] 2. Determine whether the activation of the cell is successful after 3 minutes of execution. If it has been activated successfully, go to step 4 to monitor the normal indicators of the cell; if it is not activated normally or there is an alarm, go to step 3 to understand the alarm notification;
[0199] 3. Corresponding to a cell that is unsuccessful in wake-up cell activation or has an alarm, (1) immediately output the cell as a normal activation alarm message, (2) notify the relevant person in charge through a short message to deal with it in time; then go to step 5;
[0200] 4. Continue the normal monitoring indicator process for the normal and successful entry of the wake-up cell activation;
[0201] 5. Add the blacklist to the cells with abnormal activation.
[0202] In this embodiment, the settings of the parameter thresholds under the 2G, 3G, and 4G network standards involved in the above steps are as follows: Figure 5 , Image 6 and Figure 7 As shown, it should be noted that each threshold value shown in the figure is only one of the present embodiment, and can be adjusted accordingly in practical applications.
