CN101291510B - Carrier frequency intelligent power off method - Google Patents

Abstract

The invention discloses an intelligent power-off method of carrier frequency, which is suitable for mobile communication systems, including: A. taking the channel attribute of carrier frequency as a necessary selection factor for power-off, and setting the power-off priority of each channel attribute; Set the power-off weight value according to the power-off frequency, and each channel attribute corresponds to different bits in the power-off weight value from high to low according to the power-off priority; B. Determine the channel attribute information of each carrier frequency in the current cell; for each carrier frequency, Determine the specific value of the corresponding bit in the power-off weight of the carrier frequency according to the channel attribute information of the carrier frequency; C. Select the carrier frequency with the largest power-off weight to power off. With the present invention, the carrier frequency that can be intelligently powered off can be accurately selected in a quantitative form and powered off the carrier frequency, so as to reduce the impact on the communication function of the communication system as much as possible under the premise of saving electric energy.

Description

Carrier frequency intelligent power off method

technical field

The invention relates to mobile communication technology, in particular to an intelligent power-off method for carrier frequency in a mobile communication system. the

Background technique

As the world's resources become more and more tense, energy saving has become a common topic all over the world. In the field of telecommunications, how to save resources is also a factor to be considered in the Global System for Mobile Communication (GSM, Global System for Mobile Communication). In order to reduce operating costs, telecom operators have put forward low-loss requirements for GSM equipment, so the overall power consumption performance of GSM products has become an important indicator for telecom operators to choose equipment. the

At present, in order to save power, telecom operators propose to automatically power off redundantly configured carrier frequencies (that is, turn off the power supply of the carrier frequency) when the traffic is not busy, and automatically power on after the traffic rises. , this requirement is called intelligent power-off of the carrier frequency. the

To achieve intelligent power-off, it is necessary to distinguish the carrier frequencies in the cell, which carrier frequencies can be powered off and which carrier frequencies cannot be powered off, so as to minimize the impact on the communication function of the communication system under the premise of saving power . the

However, there is no effective intelligent power-off method in the prior art that can effectively distinguish the carrier frequencies that can be powered off and those that cannot be powered off in the current cell, so as to minimize the impact on the communication function of the communication system while saving power. Impact. the

Contents of the invention

In view of this, the technical problem to be solved by the present invention is to provide a method for intelligently powering off the carrier frequency, accurately select the carrier frequency that can be intelligently powered off in the form of quantization and power off the carrier frequency, so as to realize Under the premise of saving power, minimize the impact on the communication function of the communication system. the

In order to realize the above-mentioned purpose of the invention, the main technical solutions of the present invention are:

A carrier frequency intelligent power off method, suitable for mobile communication systems, including:

A. Take the channel attribute of the carrier frequency as a necessary selection factor for power-off, set the power-off priority of each channel attribute; set the power-off weight for the carrier frequency, and each channel attribute corresponds to the power-off weight according to the power-off priority Different bits from high to low; B, determine the channel attribute information of each carrier frequency in the current cell; for each carrier frequency, determine the specific acquisition of the corresponding bit in the power-off weight value of the carrier frequency according to the channel attribute information of the carrier frequency value; C. Select the carrier frequency with the largest power-off weight to power off;

The carrier frequency channel attributes as the necessary selection factors are in order according to the power-off priority:

Whether the channel of the carrier frequency is a non-BCCH broadcast control channel;

Whether the carrier frequency is the carrier frequency of the first sub-cell;

Whether there are circuit domain CS channels and packet domain PS channels in the remaining carrier frequencies other than the current carrier frequency in the current cell. the

Preferably, the power-off weight is a binary number, and the initial value is 0; in step B, for each carrier frequency, the specific value of the corresponding bit in the power-off weight of the carrier frequency is determined according to the channel attribute information of the carrier frequency The value method is:

Determine whether the channel of the carrier frequency is non-BCCH, if so, set the corresponding position in the power-off weight to 1, otherwise set to 0;

Determine whether the carrier frequency is the carrier frequency of the first sub-cell, if so, set the corresponding position in the power-off weight to 1, otherwise set to 0;

Determine whether there are CS channels and PS channels in the remaining carrier frequencies except the current carrier frequency in the current cell, if yes, set the corresponding position in the power-off weight to 1, otherwise set to 0. the

Preferably, the power-off weight is an eight-bit binary number, wherein whether the channel of the carrier frequency is non-BCCH corresponds to the seventh bit of the power-off weight, and whether the carrier frequency is the carrier of the first sub-cell The frequency corresponds to the sixth digit of the power-off weight; whether there are CS channels and PS channels in the remaining carrier frequencies in the current cell except the current carrier frequency corresponds to the fifth digit of the power-off weight. the

Preferably, the method further uses the carrier frequency traffic and performance index as an extended selection factor for power-off, and the corresponding bit of the extended selection factor in the power-off weight value of the carrier frequency is lower than the corresponding bit of the necessary selection factor ; In step B, further determine the traffic volume and performance index of each carrier frequency in the current community, for each carrier frequency, determine the corresponding position in the power-off weight value of this carrier frequency according to the traffic volume and performance index information of this carrier frequency specific value of . the

Preferably, in step B, for each carrier frequency, the method for determining the specific value of the corresponding bit in the power-off weight value of the carrier frequency according to the traffic volume and performance index information of the carrier frequency is:

Divide the carrier frequency traffic index into M grades from low to high, and divide the carrier frequency performance index into M grades from good to poor, and M is the set value; set the traffic weight and performance weight at the same time, so The sum of the traffic weight and the performance weight is 1;

Determine the level of traffic and performance indicators of the current carrier frequency, and determine the specific values of the corresponding bits of traffic and performance indicators in the power-off weight according to the following formula:

Performance index grade×performance weight+(M+1-traffic index grade)×traffic weight. the

Preferably, the power-off weight is an eight-bit binary number, and the extended selection factor corresponds to the last four digits of the power-off weight. the

Preferably, the traffic index of the carrier frequency is the channel occupancy ratio of the carrier frequency, and the performance index of the carrier frequency is the call drop rate of the carrier frequency. the

Preferably, the method further includes before selecting the power-off carrier frequency:

Count the traffic volume of the current cell, judge whether the statistical traffic volume reaches the preset power-off threshold and the number of available carrier frequencies in the current cell is greater than or equal to 2, if so, select the power-off carrier frequency and power off; Otherwise, power off without selecting the carrier frequency for power off. the

Preferably, the selection process of the power-down carrier frequency in the method is performed by the base station controller in the mobile communication system; after the base station controller selects the power-down carrier frequency, it notifies the base transceiver station, and the base transceiver station executes the The power-off operation performed by the carrier frequency. the

In the present invention, the channel attribute of the carrier frequency is used as a necessary selection factor for power-off, and the power-off weight is set for the carrier frequency, and each channel attribute corresponds to different positions in the power-off weight from high to low according to the power-off priority , and then determine the value of the corresponding bit in the power-off weight according to the channel attribute information of the carrier frequency, so as to determine the value of the power-off weight, and select the carrier frequency with the largest power-off weight to power off. Since the channel attribute directly reflects the impact of power-off of the carrier frequency on the communication function of the mobile communication system, the present invention can be used to accurately determine the carrier frequency that most needs to be powered off in the current cell according to the channel attribute of the carrier frequency, so as to achieve Under the premise of saving power, minimize the impact on the communication function of the communication system. the

The implementation method of the present invention is simple, and the power-off weights of each carrier frequency in the cell can be calculated through several simple judgment assignments, so that the power-off selection process is fast and effective, saving power-off time, and further reducing power consumption . the

Moreover, the present invention can also use the performance index and the traffic index as extended selection factors for power-off, so that the power-off selection of the carrier frequency can be further subdivided, and the power-off carrier frequency can be selected more accurately and quickly. the

In addition, the present invention has strong expansibility, and the number of digits of the power-off weight can be expanded according to the actual number of selection factors. The necessary selection factors are not limited to the above three, and there may also be other expanded necessary selection factors. It is only necessary to expand the number of digits of the power-off weight accordingly. the

Description of drawings

FIG. 1 is a flowchart of a specific embodiment of selecting a power-down carrier frequency according to the present invention. the

Detailed ways

The present invention will be further described in detail below through specific embodiments and accompanying drawings. the

The core technical solution of the present invention is: use the channel attribute of the carrier frequency as a necessary selection factor for power-off, and set the power-off priority of each channel attribute; set the power-off weight for the carrier frequency, and each channel attribute according to the power-off priority Corresponding to different bits from high to low in the power-off weight value; determine the channel attribute information of each carrier frequency in the current cell; for each carrier frequency, determine the corresponding The specific value of the bit; select the carrier frequency with the largest power-off weight to power off. the

The present invention is applicable to mobile communication system, especially applicable to Global System for Mobile Communication (GSM, Global System for Mobile Communication), and the selection process of described off-power carrier frequency is carried out by the base station controller (BSC) in the mobile communication system; BSC selection After the carrier frequency is off, notify the base Station transceiver (BTS), the BTS performs the power-off operation on the carrier frequency. The specific power-off operation of the BTS is the prior art. The present invention mainly explains the selection process of the power-off carrier frequency. the

In the present invention, the selection factor that must be considered in selecting the power-off carrier frequency is the channel attribute of the carrier frequency, and the carrier frequency channel attribute information as a necessary selection factor includes in order according to the power-off priority:

a) Whether it is the broadcast control channel (BCCH, Broadcast Control Channel) carrier frequency. the

b) Whether it is the carrier frequency of the first sub-cell. The first sub-cell is the inner circle when concentric circles are well-known in the industry, that is to say, when a cell is configured as a concentric circle, the cell is divided into two or more sub-cells, and the inner circle is called It is the first sub-district. the

c) Whether there are circuit domain (CS) channels and packet domain (PS) channels in the remaining carrier frequencies in the cell except the current carrier frequency. The CS channel can be, for example, a traffic channel (TCH, Traffic Channel), and the PS channel can be, for example, a packet data traffic channel (PDTCH, Packet Data Traffic Channel) channel, etc. the

For each of the above-mentioned necessary selection factors, a selection strategy needs to be set correspondingly. The present invention needs to select the carrier frequency to be downloaded in sequence according to the following priority selection strategy order:

First, the non-BCCH carrier frequency is powered off first;

Secondly, the carrier frequency in the first sub-cell is preferentially powered off;

Again, after the selected local carrier is powered off, whether there are CS channels and PS channels among the remaining carrier frequencies in the cell, the local carrier will be powered off first. the

In order to further optimize the present invention, in addition to the selection factors that must be considered above, the present invention also needs to consider some extended selection factors when selecting the power-down carrier frequency. the

In a preferred embodiment of the present invention, the expanded selection factors may be: d) carrier frequency traffic index; e) carrier frequency performance index. In a preferred embodiment, the traffic index of the carrier frequency is the channel occupancy ratio of the carrier frequency, and the performance index of the carrier frequency is the call drop rate of the carrier frequency. the

The selection strategy corresponding to each of the above expansion selection factors is:

1) The carrier frequency with the lowest traffic is powered off first;

2) The carrier frequency with the worst performance is powered off first. the

The above are the selection factors of the present invention when selecting the power-down carrier frequency and the selection corresponding to each selection factor. In order to accurately select the most appropriate carrier frequency for intelligent power-off, it is necessary to determine a quantized value for each carrier frequency in the current cell according to the above selection factors and the selection strategy, and perform intelligent power-off according to the quantified value. choose. the

In the present invention, a power-off weight value can be set for each carrier frequency in the cell. The power-off weight value is a binary number whose digits are determined according to the selection factors, and the necessary selection factors correspond to high bits, and each necessary selection factor The factor occupies one digit alone, and the extended selection factor corresponds to the last few digits. For example, there are three above-mentioned necessary selection factors, so in one embodiment, the power-off weight value must have at least three bits corresponding to each necessary selection factor, corresponding to the above-mentioned selection factors a), b), and c in sequence from high to low. ); the above-mentioned extended selection factors d) and e) can be used to determine the value of the low order of the power-off weight, so the low-order digits of the power-off weight need to be able to accommodate the value determined by the extended selection factor Range, in a preferred embodiment of the present invention, the number of digits of the power-off weight determined by the extended selection factor is four digits. the

The initial value of the power-off weight is 0. The BSC first needs to determine the specific conditions of each selection factor, and determine the value of the corresponding bit according to whether each selection factor meets the corresponding selection condition. For example, if the necessary selection factor corresponding to this bit Set to 1 if the selection condition is met, otherwise set to 0. the

The values of the above-mentioned extended selection factors, that is, the corresponding bits of the carrier frequency performance data and the traffic data, can be determined according to a weighting algorithm. In order to reflect the equal importance of performance and traffic level, the carrier frequency performance data and traffic data are divided into the same M levels according to levels, where M is a set value, for example, five. For example, the traffic volume index of the carrier frequency is divided into five grades from low to high, and the performance index of the carrier frequency is divided into five grades from 1 to 5, among which the carrier frequency grade with the highest traffic volume is 5 , the carrier frequency class with the best performance data is 1, the carrier frequency class with the worst performance data is 5, and the carrier frequency class with the lowest traffic volume is 1. Then, a weight value is assigned to each expansion factor, and the sum of the weight values of each expansion factor is 1. For example, a weight value is assigned to the above-mentioned performance data and traffic data, for example, the weight value of traffic data is 0.4, and the weight value of carrier frequency data is 0.6. Finally, according to the following formula (1), the value of the number of digits corresponding to the extended selection factor in the power-off weight is determined: performance index level×performance weight+(M+1-traffic index level)×traffic weight. (1)

For example, the traffic level of a certain carrier frequency is 1, the weight is 0.4, the carrier frequency performance level is 5, and the weight The weight is 0.6, then the value of the corresponding bit of the extended selection factor is 5*0.6+(6-1)*0.4=5, if the extended selection factor corresponds to the last four digits of the power-off weight, the specific value is 0101. In addition, the number of digits of the power-off weight can be expanded according to actual needs, for example, it can also be 16 bits, and the extra digits can be used as expansion positions to be empty, but the selection factors correspond to the power-off weight according to the order of priority. Bits from high to low. the

Table 1 is a description of the value of an eight-bit binary carrier frequency power-off weight:

idle eighth place Non-BCCH carrier frequency is 1, otherwise it is 0 Seventh place The first sub-cell is 1, otherwise it is 0 sixth place 1 when there are CS and PS channels in the remaining carrier frequency, otherwise 0 fifth place Performance index level × performance weight + (M+1-traffic index level) × traffic weight last four digits

Table 1

In Table 1, the highest bit of the power-off weight value, that is, the eighth bit, is idle, and is reserved for adding a necessary selection factor in the future; the seventh bit corresponds to the necessary selection factor a), and when it is a non-BCCH channel, it will This position is 1, otherwise it is set to 0; the sixth bit corresponds to the necessary selection factor b), when it is the first cell, this position is set to 1, otherwise it is set to 0; the fifth bit corresponds to the necessary selection factor c), when there is CS in the remaining carrier frequency and PS channel, this bit is set to 1, otherwise it is set to 0; the last four bits correspond to expansion selection factors d) and e), and their values are determined according to formula (1). the

The BSC calculates the power-off weights of all carrier frequencies (the number of available carrier frequencies must be greater than or equal to 2) in the cell according to the above Table 1, and powers off the carrier frequency with the largest weight. Through the above method of the present invention, the BSC can easily select the carrier frequency that needs to be powered off. the

In addition, before selecting the power-off carrier frequency, the present invention may further include: counting the traffic volume of the current cell, judging whether the statistical traffic volume reaches the preset power-off threshold value and the number of available carrier frequencies in the current cell Greater than or equal to 2, if it is, select the power-off carrier frequency and power off; otherwise, do not select the power-down carrier frequency and will not power off. the

FIG. 1 is a flowchart of a specific embodiment of selecting a power-down carrier frequency according to the present invention. In this embodiment, when the traffic statistics of the current cell reach the power-off threshold and the number of available carrier frequencies in the cell is large It is executed when it is equal to 2, and the call drop rate of the carrier frequency is used as the performance index, the channel occupancy ratio of the carrier frequency is used as the traffic index, the power-off weight of each carrier frequency is an eight-bit binary number, and the value of each bit The description is as described in Table 1. See Figure 1, the process includes:

Step 101, query the channel attribute information of each carrier frequency (the number of available carrier frequencies is greater than or equal to 2) in the current cell in round robin, initialize the power-off weight value of each carrier frequency to 0; use the first carrier frequency as the current carrier frequency . the

Step 102, determine whether the current carrier frequency is a non-BCCH carrier frequency, that is, whether the channel of the current carrier frequency is a non-BCCH, if yes, then set the seventh position of the current carrier frequency power-off weight value to 1, otherwise power off the current carrier frequency The seventh position of the weight is 0. the

Step 103: Determine whether the current carrier frequency belongs to the first sub-cell of the current cell, and if so, set the sixth position of the current carrier frequency power-off weight to 1; otherwise, set the sixth position of the current carrier frequency power-off weight to 0. the

Step 104. Determine whether there are CS channels and PS channels in the remaining carrier frequencies in the current cell except the current carrier frequency. If yes, set the fifth position of the current carrier frequency power-off weight value to 1, otherwise set the current carrier frequency power-off weight value to 1. The fifth position of the value is 0. the

Step 105, the call drop rate is divided into 1-5 levels according to 0-2%, 2%-5%, 5%-10%, 10%-15%, 15%-100%, and the channel occupancy ratio of the carrier frequency is according to 20% is divided into 1 to 5 grades: 1: 0 to 20%, ..., 5: 80% to 100%, according to the grades of the division, determine the performance index level and traffic index level of the current carrier frequency ; Then determine the value of the last four digits of the current carrier frequency power-off weight according to the following formula:

Performance index level × performance weight + (6-traffic index level) × traffic weight

For example, if the traffic level of a carrier frequency is 1, the weight is 0.4, the carrier frequency performance level is 5, and the weight is 0.6, then the value of the bit corresponding to the expansion selection factor is 5*0.6+(6-1)*0.4 =5, if the extended selection factor corresponds to the last four digits of the power-off weight, the specific value is 0101. the

Step 106 , judging whether all the carrier frequencies in the current cell have been polled, if so, execute step 107 , otherwise, use the next carrier frequency as the current carrier frequency, and return to step 102 . the

Step 107: Compare the power-off weights of the various carrier frequencies in the current cell, select the carrier frequency with the largest power-off weight and set the power-off flag; and notify the BTS to power off the carrier frequency. the

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person familiar with the technology can easily think of changes or replacements within the technical scope disclosed in the present invention. , should be covered within the protection scope of the present invention. the

Claims (9)

1. method for electrically under the intelligence of a carrier frequency is applicable to GSM, it is characterized in that, comprising:

A, with the channel attribute of carrier frequency as the necessary choice factor of electricity down, the following electric priority of each channel attribute is set; For carrier frequency is provided with down electric weights, each channel attribute is according to from high to low not coordination in the following corresponding respectively electric weights down of electric priority;

B, confirm the channel attribute information of each carrier frequency in the current area; To each carrier frequency, confirm under this carrier frequency the concrete value of corresponding position in the electric weights according to the channel attribute information of this carrier frequency;

C, the maximum carrier frequency of the down electric weights of selection descend;

Said carrier frequency channel attribute as the necessary choice factor is followed successively by according to following electric priority: whether the channel of this carrier frequency is non-BCCH BCCH; Whether this carrier frequency is the carrier frequency of first sub cell; In the residual carrier frequency in the current area except that current carrier frequency whether circuit domain CS channel and packet domain PS channel are arranged.

2. method according to claim 1 is characterized in that, said electric weights down are binary number, and initial value is 0; Step B is said to each carrier frequency, confirms under this carrier frequency that according to the channel attribute information of this carrier frequency the method for the concrete value of corresponding position is in the electric weights:

Whether the channel of judging this carrier frequency is non-BCCH, if then will descend the correspondence position 1 in the electric weights, otherwise puts 0;

Judge that whether this carrier frequency is the carrier frequency of first sub cell, if then will descend the correspondence position 1 in the electric weights, otherwise puts 0;

Judge in the current area in the residual carrier frequency except that current carrier frequency whether CS channel and PS channel are arranged,, otherwise put 0 if then will descend the correspondence position 1 in the electric weights.

3. method according to claim 2; It is characterized in that; Said down electric weights are eight binary number, and whether the channel of wherein said carrier frequency is the 7th of the corresponding said electric weights down of non-BCCH, and whether said carrier frequency is the 6th of the corresponding said electric weights down of the first sub cell carrier frequency; Whether the 5th of said time electric weights of CS channel and PS channel correspondence is arranged in the residual carrier frequency in the said current area except that current carrier frequency.

4. based on each described method of claim 1 to 3; It is characterized in that; This method further with the telephone traffic of carrier frequency and performance indications as the expansion selection factor of electricity down, this expansion selection factor under carrier frequency in the electric weights corresponding position be lower than said necessary choice factor corresponding; In step B, further confirm the telephone traffic and the performance indications of each carrier frequency in the current area,, confirm under this carrier frequency corresponding concrete value in the electric weights based on the telephone traffic and the performance index information of this carrier frequency to each carrier frequency.

5. based on the described method of claim 4, it is characterized in that, among the step B,, confirm under this carrier frequency that based on the telephone traffic of this carrier frequency and performance index information the method for the concrete value of corresponding position is in the electric weights to each carrier frequency:

The telephone traffic index of carrier frequency is divided M grade from low to high, the performance index of carrier frequency are divided M grade by good to difference, the value of M for setting; Telephone traffic weight and performance weights are set simultaneously, said telephone traffic weight and performance weights and be 1;

Confirm the telephone traffic of current carrier frequency and the grade of performance index, confirm the concrete value of telephone traffic and performance index corresponding position in following electric weights according to the following equation:

Performance index grade * performance weights+(M+1-telephone traffic index grade) * telephone traffic weight.

6. method according to claim 5 is characterized in that, said electric weights down are eight binary number, and said expansion selection factor is to descending back four in the electric weights.

7. method according to claim 5 is characterized in that, the telephone traffic index of said carrier frequency is the channel occupancy ratio of carrier frequency, and the performance index of said carrier frequency are the cutting off rate of carrier frequency.

8. based on the described method of claim 1, it is characterized in that this method before the electric carrier frequency, further comprises under selecting:

Whether the telephone traffic of statistics current area, the telephone traffic of judging statistics reach carrier frequency number available in preset following electric switch limit value and the current area more than or equal to 2, if then select down electric carrier frequency and descend; Otherwise, do not select down electric carrier frequency to descend.

9. method according to claim 1 is characterized in that, the selection course of following electric carrier frequency is carried out by the base station controller in the GSM in this method; After base station controller chose down electric carrier frequency, the informing base station transceiver was carried out the following electricity operation that this carrier frequency is carried out by this base station transceiver.