CN101902751B - User layout implementation method and device in mobile communication system simulation - Google Patents

Abstract

The invention discloses a user layout realization method and device in mobile communication system simulation. The method includes: spreading a certain number of users within a circle with the center point of a regular hexagonal cell as the center and R as the radius, where R is greater than the vertical radius r of the cell; the lengths are set to be 2r and the included angle is two phasors of 120 degrees, a rhombus is formed for adjacent sides by these two phasors; users located outside the rhombus area are moved into the rhombus area; the rhombus and the users therein are copied into another for each user in the rhombus, select the user closest to the center point of the cell from the user and the corresponding three users in the three replication rhombuses as the user distributed in the cell users, so as to obtain the user layout in the cell. The technical scheme of the invention has low complexity and high efficiency.

Description

Method and device for implementing user layout in mobile communication system simulation

technical field

The invention relates to the technical field of mobile communication, in particular to a method and device for realizing user layout in mobile communication system simulation. the

Background technique

In the simulation of mobile communication system, it is necessary to use the user distribution model to simulate the process of user scattering, movement and signal reception, and the users need to be distributed within the cell range. the

The existing user distribution algorithm is as follows: first, random users are scattered, and then the calculation range of the cell is calculated, and then the users beyond the coverage area of the cell are calculated, and the radius of these users is adjusted to reduce them to the coverage area of the cell. the

FIG. 1 is a schematic diagram of cell coverage of a 2-layer 19-point topology in the prior art. As shown in Figure 2, the overall cell is composed of 19 unit cells, marked with 1-19 respectively, and the origin of the simulation coordinate system is the center point of the unit cell (cell 1) in the middle. Taking the cell coverage of the 2-layer 19-point topology as an example, the existing user distribution algorithm is described below, including the following steps:

(a) Randomly determine the user's radius. The radius of the user needs to be smaller than the maximum radius of the overall cell. Let the vertical radius of the unit cell be cellr, and the radius of the user be ueradius. From Figure 1, it can be seen that the radius of the user needs to be 5 times the cellr, then use the following formula (1) Generate user's radius ueradius;

ueradius＝rand(1)×5×cellr (1)

Among them, rand(1) means to generate a random number between 0 and 1. the

(b) Randomly determine the user's angle. The user's angle is randomly distributed between (0, 2π), that is, the user's angle ueangle can be calculated as:

ueangle＝rand(1)×2π (2)

Therefore, the user's position uep can be obtained as:

uep＝ueradius×(cos(ueangle)+isin(ueangle)) (3)

Among them, cos represents the sine and cosine function, sin represents the sine function, and i is the imaginary unit. the

(c) Determine the range of the cell and find out the users beyond the range. the

The straight line boundary of the cell can be represented by y=kx+b. The boundary of the whole cell shown in FIG. 1 is composed of 30 straight lines, and the intercept, slope and starting point of different straight line boundaries are different. According to the real part and imaginary part of the user position uep, that is, the coordinates of the user in the simulation coordinate system, it is judged whether the user's scale coordinates and vertical coordinates exceed the boundary of the cell. the

(d) Reduce the radius of users beyond the cell range so that they are within the cell range, namely:

uep＝ueradius×rand(1)×(cos(ueangle)+isin(ueangle)) 

(4)

In this step, the method of reducing the user radius is to multiply a random number between 0 and 1, so the radius of the user may still exceed the range of the cell after multiplying a random number for the first time, so continue to multiply the random number between 0 and 1 Count until the radius of the user is within the range of the cell. the

Through the above steps, a user distributed within the cell range is obtained. All sprinkled users in the simulation are calculated through the above steps. the

However, the existing above-mentioned user distribution method has the following disadvantages: 1) the boundary of the cell needs to be determined, and when the number and radius of the cell change, the boundary of the cell also changes accordingly, so the uncertainty increases; 2) the user radius needs to be judged Whether it exceeds the boundary of the cell, it is necessary to judge the distance and angle between the position of each cell and the base station, and the calculation complexity is high; 3) When adjusting the radius of the user to the range of the cell, it needs to be based on the existing distance of the user and the distance of the cell. Ranges are calculated for each user that is out of range, and may need to be calculated multiple times for a single user. the

To sum up, in the simulation of mobile communication systems, the existing user placement methods are computationally complex and inefficient. the

Contents of the invention

The invention provides a user layout realization method in mobile communication system simulation, the method has low computational complexity and high efficiency. the

The invention also provides a device for implementing user layout in mobile communication system simulation. The device has low computational complexity and high efficiency. the

In order to achieve the above object, technical solution of the present invention is achieved in that way:

The invention discloses a method for implementing user layout in mobile communication system simulation. For a regular hexagonal cell, the method includes:

Sprinkle a certain number of users within a circle with the center point of the cell as the center and R as the radius; wherein, R is greater than the vertical radius r of the cell;

Set the first phasor and the second phasor whose length is 2r, the angle between the first phasor and the second phasor is 120 degrees, and the first phasor and the second phasor are respectively perpendicular to the regular hexagon The two sides of the cell; the first phasor and the second phasor form a rhombus for adjacent sides;

For users located outside the diamond-shaped area among the certain number of users, move these users into the diamond-shaped area;

Copying the rhombus and the users therein into three other replicating rhombuses, so that the three replicating rhombuses and the rhombus each have a vertex located in the center of the cell, and are spliced together without overlapping;

For each user in the rhombus, from the user and the corresponding three users in the three replicated rhombuses, select the user closest to the center point of the cell as the user distributed in the cell, and obtain the cell user layout in;

Wherein, when the first phasor is perpendicular to the uppermost side of the regular hexagonal cell, and the second phasor is at a position rotated 120 degrees clockwise relative to the first phasor,

Copying the rhombus and the users therein into three other replicating rhombuses, so that the three replicating rhombuses and the rhombus each have a vertex located in the center of the cell, and splicing together without overlapping includes:

Translate the rhombus and the user in it down by 2r to get the first duplicate rhombus;

再向上平移r，得到第二个复制菱形；  Translate the diamond and the user within it to the left

Translate r up again to get the second duplicate rhombus;

再向下平移r，得到第三个复制菱形。  Translate the diamond and the user within it to the left

Translate r down again to get a third duplicate diamond.

The present invention also discloses a device for implementing user layout in mobile communication system simulation, which includes: a drop-in module, a transfer module, and a copy selection module, wherein:

The spreading module is used to spread a certain number of users within a circle with the center point of a regular hexagonal cell as the center and R as the radius, and notify the transfer module of the position of the scattered users; wherein, R is greater than The vertical radius r of the cell;

The transfer module is used to set the first phasor and the second phasor whose length is 2r, the angle between the first phasor and the second phasor is 120 degrees, and the first phasor and the second phasor are respectively perpendicular to the two sides of the regular hexagonal cell, and a rhombus is formed by the first phasor and the second phasor as adjacent sides; for users outside the rhombus area among the certain number of users, the These users move into described rhombus area; For the location notification of all users in the rhombus area, copy selection module;

The copying selection module is used to copy the rhombus and the users therein into three other replicating rhombuses, so that the three replicating rhombuses and the rhombus each have a vertex located in the center of the cell, and are stitched together without overlapping Together; for each user in the rhombus, from the user and the corresponding three users in the three replicated rhombuses, select the user closest to the center point of the cell as the user distributed in the cell , to obtain the user layout in the cell;

in,

The transfer module is configured to set the first phasor to be perpendicular to the uppermost side of the regular hexagonal cell, and the second phasor is located at a position rotated 120 degrees clockwise relative to the first phasor ;

再向上平移r，得到第二个复制菱形；用于将所述菱形以及其中的用户向左平移 

再向下平移r，得到第三个复制菱形。  The copy selection module is used to translate the rhombus and the users therein by 2r downwards to obtain the first copy rhombus; it is used to translate the rhombus and the users therein to the left

Translate r up again to get a second duplicate rhombus; used to translate said rhombus and the user within it to the left

Translate r down again to get a third duplicate diamond.

As can be seen from the above, in the present invention, a certain number of users are scattered within a circle with the center point of a regular hexagonal cell as the center and R as the radius, wherein R is greater than the vertical radius r of the cell, and then the length is set Both are 2r and the included angle perpendicular to the two sides of the regular hexagonal cell is 120 degrees. The first phasor and the second phasor form a rhombus for adjacent sides by the first phasor and the second phasor; For the users located outside the diamond-shaped area among the certain number of users, these users are moved into the diamond-shaped area through a preset strategy; the rhombus and the users therein are copied into another three to form corresponding three Duplicate the rhombus so that the three replicated rhombuses and the rhombus each have a vertex located in the center of the cell, and are spliced together without overlapping; for each user in the rhombus, from the user and the three replicated rhombuses Among the corresponding three users in , select the user closest to the center point of the cell as the user distributed in the cell, obtain the technical solution of the user layout in the cell, and provide a user layout implementation of a unit cell method, the user layout of other unit cells only needs to copy the user distribution of this unit cell. Compared with the existing method, the implementation method is not affected by the number of cells and the change of radius, and the calculation complexity is low, and the efficiency high. the

Description of drawings

Fig. 1 is a schematic diagram of cell coverage of 2 layers of 19-point topology in the prior art;

Fig. 2 is a flow chart of a method for implementing user layout in a mobile communication system simulation in an embodiment of the present invention;

Fig. 3 is a schematic diagram of regular hexagonal cells and random users in the embodiment of the present invention;

Fig. 4 is a schematic diagram after moving random users into a diamond-shaped area in an embodiment of the present invention;

Fig. 5 is the schematic diagram of the rhombus after translation replication in the embodiment of the present invention;

Fig. 6 is a structural diagram of an apparatus for implementing user layout in mobile communication system simulation in an embodiment of the present invention. the

Detailed ways

Fig. 2 is a flowchart of a user layout implementation method in a mobile communication system simulation in an embodiment of the present invention. As shown in Figure 2, for a regular hexagonal cell, the method includes:

Step 201, spreading a certain number of users within a circle with the center point of the cell as the center and R as the radius; wherein, R is greater than the vertical radius r of the cell. the

Step 202, setting the first phasor and the second phasor whose length is 2r, the angle between the first phasor and the second phasor is 120 degrees, and the first phasor and the second phasor are respectively perpendicular to Two sides of a regular hexagonal cell; a rhombus is formed for adjacent sides by the first phasor and the second phasor. the

Step 203, for users located outside the diamond-shaped area among the certain number of users, move these users into the diamond-shaped area. the

In step 204, the rhombus and the users therein are replicated into three other replicated rhombuses, so that the three replicated rhombuses and the rhombus each have a vertex located in the center of the cell and are spliced together without overlapping. the

Step 205, for each user in the rhombus, from the user and the corresponding three users in the three replicated rhombuses, select the user closest to the center point of the cell as the user distributed in the cell, and obtain User layout in the cell. the

After obtaining the user layout in a unit cell by the method shown in Figure 2, you only need to copy the user layout in the unit cell to other unit cells in the mobile communication system simulation to obtain the user layout in the mobile communication system simulation. The user layout of the overall community. Compared with the existing methods, the method has low computational complexity and high efficiency. the

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with specific embodiments. the

The improved user layout implementation method in the present invention moves the users outside the regular hexagon into the regular hexagon according to the operation and translation of the phasor, and the process is as follows:

a) First, take the center point of the regular hexagonal cell as the center of the circle, and randomly sprinkle a certain number of users within the circle with R as the radius, as shown in Figure 3; here, R takes a value larger than the vertical radius r of the cell . Here, R can take a value between r and 2r for the convenience of simulation. the

In this embodiment, R=2r, then the position uep0 of each user randomly sprinkled in is calculated by the following formula (5):

uep0＝2r×rand(1)×(cos(sita)+isin(sita)) (5)

Among them, sita=rand(1)×2π. the

Fig. 3 is a schematic diagram of a regular hexagonal cell and randomly scattered users in an embodiment of the present invention. the

b) Set the first phasor and the second phasor whose length is 2r, the angle between the first phasor and the second phasor is 120 degrees, and the first phasor and the second phasor are respectively perpendicular to the positive six Two sides of the side-shaped cell; a rhombus is formed for adjacent sides by the first phasor and the second phasor; for the users scattered in step a) outside the region of the rhombus, these users are moved into the rhombus area, as shown in Figure 4. the

Fig. 4 is a schematic diagram of the randomly scattered users moved into the rhombus area in the embodiment of the present invention. As shown in FIG. 4 , in this embodiment, the first phasor is set perpendicular to the uppermost side of the regular hexagonal cell, and the second phasor is set at a position rotated 120 degrees clockwise relative to the first phasor. That is, the first phasor is expressed by complex numbers as: i2r; the second phasor is expressed by complex numbers as:

In the present invention, multiple ways can be adopted to move the users outside the diamond-shaped area into the diamond-shaped area. For example, users outside the diamond-shaped area can be moved into the diamond-shaped area by reducing the user's radius (the distance between the user and the center point of the cell) according to a certain ratio, rotating the user by a certain angle from the center point of the cell, or a combination of both. . The following is the method adopted in this embodiment to move users outside the diamond-shaped area into the diamond-shaped area:

Assuming that the number of users located outside the diamond-shaped area is N, and the origin of the complex plane coordinate system is located at the center point of the regular hexagonal cell, then:

First, get x according to formula (6);

Ax＝b→x＝A ^-1 b (6)

Among them, A is a 2×2 matrix composed of the real part and imaginary part of the first phasor and the real part and imaginary part of the second phasor; b is a 2 matrix composed of the real part and imaginary part of N user positions ×N matrix; A ^-1 is the inverse matrix of A; then x is a 2×N matrix;

Then, modulo 1 on x according to formula (7) to get the remainder y:

y=mod(x, 1) (7)

Finally, according to the formula (8), the positions uep of the N users outside the rhombic area after moving into the rhombic area are obtained. That is, uep is a matrix formed by the real part and the imaginary part of the position after the N users move into the diamond-shaped area;

uep＝A×y (8)

Combining formulas (6), (7) and 8 can be obtained:

uep=A×mod(A ^-1 ×b, 1) (9)

The meaning of formula (9) is: for each user, multiply the real part and imaginary part of the user's position by phasor 1 and phasor 2 respectively; the result is that the real part of the user's position is transformed into A phasor on phasor 1 or its extension (called the phasor corresponding to the real part of the user position), transforms the imaginary part of the user position into a phasor terminal on phasor 2 or its extension ( is called the phasor corresponding to the imaginary part of the user position). The length of the phasor corresponding to the real part and the imaginary part of the user position is modulo 1 to realize normalization processing. The phasor obtained by adding the phasors corresponding to the real part and the imaginary part of the user's position is the phasor corresponding to the position after the user moves into the diamond-shaped area. According to the principle of phasor addition, since the phasor corresponding to the real part of the user position overlaps with phasor 1 and its length is less than or equal to phasor 1, the phasor corresponding to the imaginary part of the user position overlaps with phasor 2 and its length is less than or equal to phasor 1. The length is less than or equal to phasor 2, therefore, the sum of these two phasors must be located in the rhombus area. the

c) Copy the rhombus and the users therein into three other copies to form three corresponding replicated rhombuses, so that the three replicated rhombuses and the rhombus each have a vertex located in the center of the cell without overlapping Stitched together. the

In this embodiment, the three copied rhombuses are obtained by translating the rhombus, specifically:

Translate the rhombus and the users in it down by 2r to get the first copied rhombus, and the user position uep1 in the first copied rhombus is shown in formula (9):

uep1＝uep-i(2r) (9)

再向上平移r，得到第二个复制菱形，第二个复制菱形中的用户位置uep2如公式(10) 所示：  Translate the diamond and the user within it to the left

Translate r up again to get the second copy rhombus, and the user position uep2 in the second copy rhombus is shown in formula (10):

$\mathrm{<span\; class="notranslate">\; uep</span>}\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; uep</span>}<span\; class="notranslate">\; -</span>\sqrt{\mathrm{<span\; class="notranslate">\; 3</span>}}\mathrm{<span\; class="notranslate">\; r</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; ir</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 10</span>}<span\; class="notranslate">\; )</span>$

再向下平移r，得到第三个复制菱形，第三个复制菱形中的用户位置uep2如公式(11)所示：  Translate the diamond and the user within it to the left

Translate r down again to get the third copy rhombus, and the user position uep2 in the third copy rhombus is shown in formula (11):

$\mathrm{<span\; class="notranslate">\; uep</span>}\mathrm{<span\; class="notranslate">\; 3</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; uep</span>}<span\; class="notranslate">\; -</span>\sqrt{\mathrm{<span\; class="notranslate">\; 3</span>}}\mathrm{<span\; class="notranslate">\; r</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; ir</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 11</span>}<span\; class="notranslate">\; )</span>$

Figure 5 shows each rhombus copied by the above method. the

Fig. 5 is a schematic diagram of a rhombus after translation and replication in an embodiment of the present invention. As shown in Figure 5, the original rhombus (the rhombus in the upper right corner) is translated and replicated to obtain three replicated rhombuses, and for each user initially sprinkled in, each rhombus (including the original diamond and the replicated rhombus) has One corresponding position, that is, there are 4 corresponding positions in total. the

In addition, users in different parts of the original rhombus are just distributed in different parts of the regular hexagonal cell. For example, users in A12, A31, B11, and B32 in the original rhombus are originally in a regular hexagon; users in A11 and A22 in the original rhombus translate to the first copied rhombus, and the corresponding position is A"11 and A"22, in the regular hexagon; after the user in B31 and B22 in the original diamond moves to the second copied rhombus, the corresponding positions are B'31 and B'22, in the regular hexagon; in the original After users in A21, A32, B12 and B21 in the rhombus move to the third replicated rhombus, the corresponding positions are A'21, A'32, B"12 and B"21, which are in the regular hexagon. the

d) For each user in the original rhombus, from the user and the corresponding three users in the three replicated rhombuses, select the user closest to the center point of the regular hexagonal cell as the user distributed in the cell, The user layout in the cell is obtained. the

Here, if the user with the shortest radius is selected from the four user positions corresponding to the four rhombuses, the user must be located in a regular hexagonal cell. the

e) Copying the user layout of the regular hexagonal cell to other cells in the simulation in sequence to obtain the user layout of the overall cell. the

Fig. 6 is a structural diagram of a device for implementing user layout in a mobile communication system simulation in an embodiment of the present invention. As shown in Figure 6, the device includes: sprinkle into module 601, transfer module 602 and copy selection module 603, wherein:

The spreading module 601 is used to spread a certain number of users within a circle with the center point of a regular hexagonal cell as the center and R as the radius, and notify the transfer module 602 of the positions of the scattered users; wherein, R is greater than the vertical radius r of the cell;

The transfer module 602 is configured to set a first phasor and a second phasor whose length is 2r, the angle between the first phasor and the second phasor is 120 degrees, and the first phasor and the second phasor Respectively perpendicular to the two sides of the regular hexagonal cell, and a rhombus is formed by the first phasor and the second phasor as adjacent sides; for users outside the rhombus area among the certain number of users, These users are moved into the diamond-shaped area through a preset strategy; it is used to notify the copy selection module 603 of the positions of all users in the diamond-shaped area;

The copy selection module 603 is configured to copy the rhombus and the users therein into another three copies to form three corresponding replica rhombuses, so that the three replica rhombuses and the rhombus each have a vertex located in the center of the cell, and are spliced together without overlapping; for each user in the rhombus, from the user and the corresponding three users in the three replicated rhombuses, select the user closest to the center point of the cell as the user distributed in The users of the cell obtain the user layout in the cell. the

As shown in Figure 6, the device further includes: a simulation replication module 604; the replication selection module is further used to notify the simulation replication module 604 of the user layout in the cell; the simulation replication module 604 is used to The user layout in the cell is copied to all other cells in the mobile communication system simulation. the

Assuming that the number of users located outside the diamond-shaped area is N, and the origin of the complex plane coordinate system is located at the center point of the cell; then the transfer module 602, first, according to the formula Ax=b→x=A ^-1 b Obtain x; where, A is a 2×2 matrix composed of the real part and imaginary part of the first phasor and the real part and imaginary part of the second phasor; b is the real part and imaginary part of N user positions The matrix of 2 * N that forms; A ^-1 is the inverse matrix of A; Then x is the matrix of 2 * N; Then, according to formula y=mod (x, 1) to x modulo 1, obtain remainder y; Finally, according to The formula uep=A×y obtains the position uep of the N users outside the rhombic area after moving into the rhombic area.

再向上平移r，得到第二个复制菱形；用于将所述菱形以及其中的用户向左平移 

再向下平移r，得到第三个复制菱形。  In FIG. 6, the transfer module 602 is configured to set the first phasor to be perpendicular to the uppermost side of the regular hexagonal cell, and the second phasor is located in the order relative to the first phasor. The position where the hour hand is rotated by 120 degrees; the copy selection module 603 is used to translate the rhombus and the users therein by 2r downwards to obtain the first copied rhombus; it is used to translate the rhombus and the users therein to the left

Translate r up again to get a second duplicate rhombus; used to translate said rhombus and the user within it to the left

Translate r down again to get a third duplicate diamond.

In FIG. 6, the adding module 601 is configured to randomly add the certain number of users. the

To sum up, the technical scheme of the present invention, which updates the user position through the remote calculation of the phasor according to the set phasor direction and length, provides a method for realizing the user layout of a unit cell, and the users of other unit cells The layout only needs to copy the user distribution of the unit cell. Compared with the existing method, the implementation method is not affected by the number of cells and the radius change, and the calculation complexity is low and the efficiency is high. the

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection. the

Claims (8)

1. a user layout implementation method in mobile communication system simulation, it is characterized in that, for a regular hexagonal cell, the method comprises: Sprinkle a certain number of users within a circle with the center point of the cell as the center and R as the radius; wherein, R is greater than the vertical radius r of the cell; Set the first phasor and the second phasor whose length is 2r, the angle between the first phasor and the second phasor is 120 degrees, and the first phasor and the second phasor are respectively perpendicular to the regular hexagon Two sides of the cell; a rhombus is formed for adjacent sides by the first phasor and the second phasor; For users located outside the diamond-shaped area among the certain number of users, moving these users into the diamond-shaped area; Copying the rhombus and the users therein into three other replicating rhombuses, so that the three replicating rhombuses and the rhombus each have a vertex located in the center of the cell, and are spliced together without overlapping; For each user in the rhombus, from the user and the corresponding three users in the three replicated rhombuses, select the user closest to the center point of the cell as the user distributed in the cell, so as to obtain the User layout in the cell; Wherein, when the first phasor is perpendicular to the uppermost side of the regular hexagonal cell and the second phasor is at a position rotated 120 degrees clockwise relative to the first phasor, Copying the rhombus and the users therein into three other replicating rhombuses, so that the three replicating rhombuses and the rhombus each have a vertex located in the center of the cell, and splicing together without overlapping includes: Translate the rhombus and the user therein by 2r downwards to obtain the first duplicate rhombus; Translate the diamond and the user within it to the left Translate r up again to get the second duplicate rhombus; Translate the diamond and the user within it to the left

Translate r down again to get a third duplicate diamond. 2. The method according to claim 1, further comprising: copying the user layout in the cell to all other cells in the mobile communication system simulation. 3. The method according to claim 1, wherein, for users located outside the diamond-shaped area among the certain number of users, moving these users into the diamond-shaped area comprises: Assuming that the number of users located outside the diamond-shaped area is N, and assuming that the origin of the complex plane coordinate system is located at the center point of the cell; First, get x according to the formula Ax=b→x=A ^-1 b; Among them, A is a 2×2 matrix composed of the real part and imaginary part of the first phasor and the real part and imaginary part of the second phasor; b is a 2 matrix composed of the real part and imaginary part of N user positions ×N matrix; A ^-1 is the inverse matrix of A; Then, according to formula y=mod (x, 1) to x modulo 1, obtain remainder y; Finally, according to the formula uep=A×y, the position uep of the N users outside the rhombic area after moving into the rhombic area is obtained. 4. The method according to claim 1, characterized in that, taking the center point of the cell as the center of the circle and taking R as the radius to sprinkle a certain number of users within a circle range is: Randomly sprinkle. 5. A device for implementing user layout in mobile communication system simulation, characterized in that, the device includes: sprinkle into module, transfer module, copy selection module, wherein: The spreading module is used to spread a certain number of users within a circle with the center point of a regular hexagonal cell as the center and R as the radius, and notify the transfer module of the position of the scattered users; wherein, R is greater than The vertical radius r of the cell; The transfer module is used to set the first phasor and the second phasor whose length is 2r, the angle between the first phasor and the second phasor is 120 degrees, and the first phasor and the second phasor are respectively perpendicular to the two sides of the regular hexagonal cell, and a rhombus is formed by the first phasor and the second phasor as adjacent sides; for users outside the rhombus area among the certain number of users, the These users move into the diamond-shaped area; for notifying the copy selection module of the positions of all users in the diamond-shaped area; The copying selection module is used to copy the rhombus and the users therein into three other replicating rhombuses, so that the three replicating rhombuses and the rhombus each have a vertex located in the center of the cell, and are stitched together without overlapping together; for each user in the rhombus, from the user and the corresponding three users in the three replicated rhombuses, select the user closest to the center point of the cell as the user distributed in the cell, obtaining the user layout in the cell; in, The transfer module is configured to set the first phasor to be perpendicular to the uppermost side of the regular hexagonal cell, and the second phasor is located at a position rotated 120 degrees clockwise relative to the first phasor ; The copy selection module is used to translate the rhombus and the users therein by 2r downwards to obtain the first copy rhombus; it is used to translate the rhombus and the users therein to the left Translate r up again to get a second duplicate rhombus; used to translate said rhombus and the user within it to the left

Translate r down again to get a third duplicate diamond. 6. The device according to claim 5, characterized in that the device further comprises: a simulation copy module; The replication selection module is further configured to notify the simulation replication module of the user layout in the cell; The simulation copying module is used to copy the user layout in the cell to all other cells in the mobile communication system simulation. 7. The device according to claim 5, wherein the number of users located outside the diamond-shaped area is N, and the origin of the complex plane coordinate system is located at the center point of the cell; The transfer module, first, obtains x according to the formula Ax=b→x=A ^-1 b; wherein, A is composed of the real part and imaginary part of the first phasor and the real part and imaginary part of the second phasor 2×2 matrix; b is a 2×N matrix made up of real and imaginary parts of N user positions; A ^-1 is the inverse matrix of A; then, according to the formula y=mod(x, 1) for x modulo 1 to obtain the remainder y; finally, according to the formula uep=A×y, obtain the position uep of the N users outside the diamond-shaped area after moving into the diamond-shaped area. 8. The device of claim 5, wherein: The distributing module is used for randomly distributing the certain number of users.

Images