CN101420699B - Control method, device and base station for coordinating adjacent cell interference of the same station - Google Patents

Abstract

The embodiments of the present invention relate to a control method, device and base station for interference coordination between adjacent cells of the same station. The method includes: obtaining two adjacent cells belonging to the same base station that interfere with the current cell, that is, the first co-site neighboring cell and the second co-site neighboring cell; obtaining edge user information in the current cell, subject to the first co-site neighbor The edge user interfered by the adjacent cell is the first edge user, and the edge user interfered by the second same-site adjacent cell is the second edge user; the resource occupancy rate of the first edge user in the current cell is obtained as the first resource occupancy rate, and the second edge user is obtained The resource occupancy rate of the two edge users in the current cell is used as the second resource occupancy rate; when the first resource occupancy rate and the second resource occupancy rate are both smaller than the first threshold value, the time domain interference coordination is enabled. In the embodiment of the present invention, an appropriate time can be selected according to the load condition, and the time-domain interference coordination can be enabled, so that the interference between cells can be effectively reduced.

Description

Control method, device and base station for coordinating adjacent cell interference of the same station

technical field

Embodiments of the present invention relate to communication technologies, and in particular to a method, device and base station for controlling interference coordination between adjacent cells of the same station.

Background technique

Spectrum utilization and quality of service (QoS for short) are important performance indicators of wireless access technologies and access networks. In order to achieve high spectral efficiency, the frequency reuse factor should be as close to 1 as possible when deploying the network; in order to provide satisfactory services, it is necessary to ensure the QoS of users, especially cell edge users. For the long-term evolution (Long Term Evolution, LTE) system physical layer uplink transmission scheme, the uplink (from the user to the base station) transmission is based on the Orthogonal Frequency Division Multiplex (OFDM) transmission technology, the user in the cell The information is carried on different carriers that are orthogonal to each other, so the interference comes from other cells, that is, inter-cell interference. Since the OFDM technology itself has no inter-cell interference suppression mechanism, if the frequency reuse factor is 1, the inter-cell interference level will increase, especially the performance of users located in the edge area of the cell (hereinafter referred to as: edge users) will be degraded. greatly affected. It can be seen that it is necessary to effectively reduce inter-cell interference and improve the information transmission rate and spectrum utilization of edge users. In the prior art, inter-cell interference coordination (Inter-Cell Interference Coordination, ICIC for short) technology includes: inter-cell interference randomization technology, inter-cell interference cancellation technology and inter-cell interference coordination technology.

In the process of realizing the embodiment of the present invention, the inventors found that the effect of the inter-cell interference coordination technology on suppressing inter-cell interference is related to the dynamic distribution of users and services in the cell. When to start and when to turn off interference coordination is of great importance to the improvement of the overall system performance. Impact.

Contents of the invention

Embodiments of the present invention provide a control method, device, and base station for co-site adjacent cell interference coordination, which are used to select an appropriate opportunity according to the load of current cell edge users, and start the method of time-domain interference coordination to perform interference coordination control. In this way, the inter-cell interference of the same station is effectively reduced, and the system performance is improved.

An embodiment of the present invention provides a method for controlling interference coordination between adjacent cells of the same station, including:

Obtaining two neighboring cells belonging to the same base station that interfere with the current cell, namely the first co-site neighboring cell and the second co-site neighboring cell;

Acquiring the information of the edge users in the current cell, using the edge users interfered by the first co-site neighbor cell as the first edge users, and taking the edge users interfered by the second co-site neighbor cell as the second edge users user;

acquiring the resource occupancy rate of the first edge user in the current cell as the first resource occupancy rate, and acquiring the resource occupancy rate of the second edge user in the current cell as the second resource occupancy rate;

When the first resource occupancy rate is less than a first threshold value and the second resource occupancy rate is less than a first threshold value, enable time-domain interference coordination for the first edge user and the second edge user .

The embodiment of the present invention also provides a control device for interference coordination between adjacent cells of the same station, including:

The same-site adjacent cell information acquisition module is used to obtain two adjacent cells belonging to the same base station that interfere with the current cell, namely the first same-site adjacent cell and the second same-site adjacent cell;

An edge user information acquisition module, configured to acquire information about edge users in the current cell, using the edge user interfered by the first co-site neighbor cell as the first edge user, who will be interfered by the second co-site neighbor cell The interfering edge user acts as the second edge user;

A resource occupancy acquisition module, configured to acquire the resource occupancy rate of the first edge user in the current cell as the first resource occupancy rate, and acquire the resource occupancy rate of the second edge user in the current cell as the second resource occupancy rate. resource occupancy;

A time-domain interference coordination module, configured to alternately allocate resources to the first edge user and the second edge user in different time periods;

A time-domain interference coordination enabling module, configured to enable the time-domain interference coordination module when the first resource occupancy rate is less than a first threshold and the second resource occupancy rate is less than the first threshold.

An embodiment of the present invention further provides a base station including a control device for co-station adjacent cell interference coordination, including:

A receiving module, configured to receive user information of the current cell of the base station;

A control device for coordinating adjacent cell interference on the same site, configured to use the user information received by the receiving module to obtain two adjacent cells belonging to the base station that interfere with the current cell of the base station, namely the first adjacent cells on the same site. area and the second adjacent cell on the same site; obtain the information of the edge users in the current cell, and use the edge user interfered by the first adjacent cell on the same site as the first edge user, and will be affected by the second adjacent cell on the same site The edge user interfering with the area is used as the second edge user; the resource occupancy rate of the first edge user in the current cell is obtained as the first resource occupancy rate, and the resource occupancy rate of the second edge user in the current cell is obtained As the second resource occupancy rate; when the first resource occupancy rate is less than the first threshold value and the second resource occupancy rate is less than the first threshold value, enable the first edge user and the second edge user time-domain interference coordination.

In the method, device, and base station for coordinating interference coordination between adjacent cells of the same station provided by the embodiments of the present invention, the appropriate timing can be selected, and interference coordination control can be performed through the method of time domain interference coordination, which effectively reduces the interference between cells and reduces the interference between cells. The impact of inter-interference on cell edge users improves system performance.

Description of drawings

FIG. 1 is a flow chart of the first embodiment of the control method for co-station adjacent cell interference coordination in the present invention;

FIG. 2 is a flow chart of the second embodiment of the control method for co-station adjacent cell interference coordination in the present invention;

Figure 3a is a path diagram of an embodiment of the same station cell in the present invention;

Fig. 3b is a schematic diagram of the first expansion path of the embodiment of the same station cell in the present invention;

Fig. 3c is a schematic diagram of the second expansion path of the embodiment of the same station cell in the present invention;

Fig. 3d is a schematic diagram of an isolated cell in an embodiment of a co-site cell in the present invention;

FIG. 4 is a schematic diagram of a first embodiment of a control device for co-station adjacent cell interference coordination according to the present invention;

FIG. 5 is a schematic diagram of a second embodiment of a control device for co-station adjacent cell interference coordination according to the present invention;

FIG. 6 is a schematic diagram of an embodiment of a base station including a control device for co-station adjacent cell interference coordination according to the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them.

Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

For ease of description, in the following detailed embodiments of the present invention, a cell located within the coverage of the same base station is a same-site cell; a cell located within the same base station coverage as the current cell and adjacent to the current cell is It is the same-site neighboring cell; the two adjacent cells that interfere with the current cell and belong to the same base station are the first same-site neighboring cell and the second same-site neighboring cell; the user located in the center area of the cell is the central user; The users located in the edge area of the cell are the edge users; among the edge users of the current cell, one or more edge users who are interfered by the first co-site neighbor cell are called the first edge users (or can be referred to as the first co-site neighbors). One or more edge users who are interfered by the second co-site adjacent cell are called second edge users. The embodiments of the present invention can control the interference coordination of the adjacent cells of the same station in the uplink communication process, and can also control the interference coordination of the adjacent cells of the same station in the downlink communication process.

Method embodiment one

Fig. 1 is the flow chart of the first embodiment of the control method for co-station adjacent cell interference coordination of the present invention, as shown in Fig. 1, including:

Step 11. Obtain two neighboring cells belonging to the same base station that interfere with the current cell, namely the first co-site neighboring cell and the second co-site neighboring cell.

Neighboring cells that interfere with the current cell may come from co-site neighboring cells or non-co-site neighboring cells. Neighboring cells not on the same site are asynchronous in time with the current cell, and time domain interference coordination cannot be performed; however, adjacent cells on the same site are synchronous in time with the current cell, so time domain interference coordination can be used. In this step, any two adjacent cells that interfere with the current cell and belong to the same base station can be determined according to the measured received power of the reference signal of each adjacent cell, that is, the first co-site neighboring cell and the second co-site neighboring cell. Here, neighboring cells with relatively strong interference may also be selected as the first co-site neighboring cell and the second co-site neighboring cell.

Step 13. Acquiring the information of the edge users in the current cell, taking the edge users interfered by the first co-site neighbor cell as the first edge users, and taking the edge users interfered by the second co-site neighbor cell as the first edge users Second edge users.

Among the edge users of the current cell, one or more edge users who are interfered by the first co-site neighbor cell are called first edge users, and one or more edge users who are interfered by the second co-site neighbor cell are called second edge users .

The edge user can be determined according to the reference signal received power (Reference Signal Received Power, referred to as RSRP) measurement value of the current cell reported by the user in the current cell and the RSRP measurement value of the neighboring cell of the same station.

The larger the RSRP measurement value of the neighboring cell received by the edge user is, the stronger the interference of the neighboring cell is to the edge user. Therefore, the degree of interference of the neighboring cell to the current cell can be determined by counting the RSRP of the neighboring cell reported by the edge user.

Step 15: Obtain the resource occupancy rate of the first edge user in the current cell as the first resource occupancy rate, and acquire the resource occupancy rate of the second edge user in the current cell as the second resource occupancy rate.

The first resource occupancy rate represents the ratio of the number of resource blocks of the current cell occupied by the first edge user to the total amount of physical shared channel (Physical Shared Channel, PSCH) frequency resource blocks allocated by the base station for the current cell within a statistical time interval The second resource occupancy rate represents the ratio of the number of resource blocks of the current cell occupied by the second edge user to the total amount of physical shared channel frequency resource blocks allocated by the base station for the current cell within a statistical time interval.

The current traffic volume of the first edge user and the second edge user and the edge load of the current cell can be reflected by the first resource occupancy rate and the second resource occupancy rate.

Step 17: When the first resource occupancy rate is less than a first threshold value and the second resource occupancy rate is less than a first threshold value, enable time-domain interference on the first edge user and the second edge user coordination.

When the first resource occupancy rate and the second resource occupancy rate are both smaller than the first threshold value, the traffic volume of the first edge user and the second edge user in the current cell is relatively small, and the load at the edge of the current cell is relatively light. The time-domain interference coordination for the first co-site adjacent cell and the second co-site adjacent cell will not affect the service requirements of the system.

The selection of the specific value of the first threshold needs to consider the resource occupancy rate (that is, the load of the edge) of the edge users within a period of time (the length of the time value needs to be considered), and the specific value can be selected according to actual needs.

Interference coordination in the time domain is to alternately allocate resources to the first edge user and the second edge user within different time periods. For example, allocate frequency resources to the first edge user in odd frames, and allocate frequency resources to the second edge user in even frames; or, allocate frequency resources to the second user in a short period of time, and then allocate frequency resources Frequency resources are allocated to the first user.

In the process of implementing the embodiments of the present invention, the inventors found that the effect of inter-cell interference coordination depends on the dynamic distribution of users and services in the current cell, and the performance gain varies when interference coordination is enabled under different edge load states. For example, when the traffic volume of edge users is large, the edge load of the cell is heavy. At this time, if inter-cell interference coordination is performed, the system performance will not be greatly improved, and the system service requirements cannot be met. Therefore, when to start the inter-cell interference coordination operation and when to turn off the inter-cell interference coordination operation will greatly improve the performance of the system.

Cells under different base station coverage areas are asynchronous in time and can only perform frequency domain interference coordination; while cells under the same base station coverage area (that is, same-site cells) are synchronous in time, therefore, time domain interference coordination can be used In this way, the control method for co-site adjacent cell interference coordination provided by the embodiment of the present invention focuses on selecting an appropriate time to turn on and off the time-domain interference coordination function, and then performs interference coordination and resource allocation through the time-domain interference coordination method after it is turned on, and further Improved system performance.

In this embodiment, by obtaining the information of two co-site neighboring cells that interfere with the current cell, and calculating the resource occupancy rates of edge users adjacent to the two co-site neighboring cells, respectively, and then judging the load situation at the edge of the current cell, and When the resource occupancy ratios of the edge users adjacent to the two co-site neighbors are less than the first threshold (that is, the load at the edge of the current cell is small), the first co-site neighbor and the second co-site neighbor are enabled for the current cell. Two, the time-domain interference coordination of adjacent cells of the same station, so as to stagger the impact of interference between adjacent cells of the same station in time, effectively reduce inter-cell interference, reduce the impact of inter-cell interference on current cell edge users, and improve edge user security. Throughput and coverage of the cell, and try not to affect the throughput of the cell, thereby improving system performance.

Method embodiment two

Fig. 2 is a flow chart of the second embodiment of the method for controlling interference coordination between adjacent cells of the same station according to the present invention. As shown in Figure 2, this embodiment includes:

Step 21. Obtain two adjacent cells belonging to the same base station that have the strongest interference to the current cell, namely the first co-site neighboring cell and the second co-site neighboring cell.

In this embodiment, when obtaining adjacent cells belonging to the same base station that interfere with the current cell, the two adjacent cells belonging to the same base station that have the strongest interference with the current cell can be called the first co-site adjacent cells respectively. With the second co-site neighbor cell, it is judged when the two cells with the strongest interference to the current cell start time-domain interference coordination, so as to reduce inter-cell interference as much as possible and improve efficiency.

As for the strongest interfering neighboring cell, for example, the RSRP values of each neighboring cell reported by the user of the current cell can be summarized and summed, and these reported RSRP values are summed according to each neighboring cell, and the obtained results are arranged from large to small , select the first and second neighbors as the strongest interfering neighbors.

Another embodiment is provided below to obtain the first co-site neighboring cell and the second co-site neighboring cell that have the strongest interference to the current cell. Steps 2101 to 2109 are an embodiment of obtaining information of the same-site neighbor cell with the strongest interference to the current cell.

Step 2101, according to the RSRP measurement value of the current cell reported by the user in the current cell and the RSRP measurement value of the neighbor cell of the same station, obtain the edge user information in the current cell.

The user in the current cell reports the measured RSRP measurement value of the current cell and the RSRP measurement value of the neighbor cell of the same station to the base station. The base station takes the neighbor cell with the largest RSRP measurement value among the neighbor cell RSRP measurement values received by the user as the strongest neighbor cell RSRP measurement value, and judges the relative relationship between the current cell RSRP measurement value and the strongest neighbor cell RSRP measurement value, Therefore, the wireless position of the user in the cell is determined, that is, it is determined whether the user is located in the center area of the current cell or the edge area of the current cell.

If the difference between the RSRP measurement value of the current cell reported by the user and the RSRP measurement value of the strongest neighbor cell is less than the relative threshold value _SG , then it can be considered that the user is located in the edge area of the current cell, and the user is an edge user of the current cell; On the contrary, it is considered that the user is located in the central area of the current cell, and the user is the central user of the current cell. The value of the relative threshold S _G limits the determination range of the current cell edge area, which can be selected according to a pre-designed strategy, for example, the relative threshold S _G can be 6dB.

Step 2103, according to the RSRP measurement value of the current cell and the RSRP measurement value of the neighboring cell reported by the user of the current cell, obtain the information of the same-site neighboring cell of the current cell.

After obtaining the edge user information of the current cell, the base station maintains a user-level neighbor cell information list (hereinafter referred to as the edge user neighbor cell information table) for each edge user of the current cell. Each row in the edge user neighbor cell information table stores the edge user identifier (UE-ID), the current cell identifier (serving cell-ID) and its RSRP measurement value, and the neighbor cell identifier (cell-ID) reported by the edge user And the corresponding RSRP measurement value and other information, and the RSRP measurement value of the neighboring cell reported by the edge user is arranged in descending order. The information stored in the edge user neighbor cell information table is dynamically maintained according to the information reported by the current cell user.

In order to obtain the information of the neighbor cell of the same site with the strongest interference to the edge user, the base station can make a judgment according to the information in the edge user neighbor cell information table. For example: the base station judges whether the neighbor cell with the largest RSRP measurement value (that is, the strongest interference neighbor cell) in the first row of the edge user neighbor cell information table is the same-site neighbor cell, for example: the base station can use the pre-stored same-site neighbor cell identification information , compare it with the neighbor cell identification information in the edge user neighbor cell information table, and judge whether the neighbor cell is the same-site neighbor cell of the current cell; if the neighbor cell identification information in the edge user neighbor cell information table is the same If the identity information of adjacent cells of the station is the same, the adjacent cell is the adjacent cell of the same station; otherwise, according to the RSRP measurement value in the next row in the edge user adjacent cell information table, the corresponding adjacent cell is judged until the current strongest interference of the edge user is obtained. Neighboring cell information of the same station. The base station may maintain a cell-level same-site neighboring cell information list (hereinafter referred to as: cell same-site neighboring cell information list) for the obtained same-site neighboring cell information with the strongest interference for each edge user. The same-site neighbor cell information list of the cell currently stores the information of the same-site neighbor cell with the strongest interference for the edge user of the current cell, and dynamically maintains it; Compare the information of the most interfering co-site neighbors obtained with the information of the most interfering co-site neighbors stored in the same-site neighbor information list of the cell, and update the cell with the latest acquired information of the most interfering co-site neighbors The information of the same-site neighboring cells with the strongest interference stored in the same-site neighboring cell information list. Specifically, if the newly obtained information on the same-site neighbor with the strongest interference is not stored in the information list of the same-site neighbor with the cell, then add the newly acquired information on the same-site neighbor with the strongest interference to the list of the same-site neighbors of the cell. If the information on the same-site neighbor with the strongest interference stored in the cell’s same-site neighbor information list does not appear in the newly acquired information on the same-site neighbor with the strongest interference, the information on the same-site neighbor Delete the same-site neighbor cell information with the strongest interference from the list.

Step 2105, perform statistical analysis on the information of the same-site neighbors with the strongest interference of each edge user in the current cell, and obtain the same-site neighbors with the strongest interference of each edge user (the same-site neighbors recorded in the same-site neighbor information list of the cell) interference weight.

Statistically within a certain period of time (for example: within the time interval T _{intra_itv} ), the neighbors with the strongest interference (the largest RSRP measurement value) reported by the current cell each time are the edges of each co-site neighbor stored in the cell co-site neighbor information list For the number of users, add up the statistical results reported each time by these edge users in the current cell, and calculate the interference weight w _i,j corresponding to each co-site neighboring cell in the same-site neighboring cell information list of the cell. The interference weight w _{i, j} can be calculated using the following formula:

${\mathrm{<span\; class="notranslate">\; w</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; j</span>}}<span\; class="notranslate">\; =</span>\underset{\mathrm{<span\; class="notranslate">\; u</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}}{\overset{{\mathrm{<span\; class="notranslate">\; m</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}\underset{\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}}{\overset{{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; intra</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; itv</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; w</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; j</span>}}^{<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; )</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>$

Wherein, i is the sequence number of the current cell; j is the sequence number of the same station neighbor cell of the current cell in the same station neighbor cell information list of the cell; _Mi is the number of edge users adjacent to the same station neighbor cell j in the current cell i; For an edge user in the current cell i, report the number of times that the same station neighbor with the strongest interference is the same station neighbor with the sequence number j; T _{intra_itv} is the statistical time interval; l is each statistical time interval (such as: transmission time interval (Transmission time interval) Time Interval, referred to as TTI)) duration. It can be seen from formula (1) that the value of w _{i, j} is equal to the total number of times that the strongest co-site interference neighbor cell reported by all edge users in the current cell is the co-site neighbor cell with the sequence number j within the statistical time interval T _{intra_itv} . Through the formula (1), the interference weight corresponding to each co-site neighboring cell with the strongest interference included in the same-site neighboring cell information list of the cell can be calculated.

Step 2107 , according to the information list of co-site neighbor cells reported by each co-site cell and the corresponding interference weight of each co-site neighbor cell in the list, obtain the path weight between co-site cells.

Each cell under the coverage of the base station takes the statistical time interval T _{intra_itv} as the unit, and reports to the base station every T _{intra_itv} the information list of the same-site neighbor cell of the current cell and the corresponding interference weight of each same-site neighbor cell in the list. According to the information reported by each cell, the base station updates the path weights of the adjacent intervals of the same station within the coverage of the base station. For example, assuming that the interference weight of cell J reported by cell i is 2; the interference weight of cell i reported by cell j is 3, then the path weights between cell i and cell j are respectively determined according to their respective statistical values Value: The path weight from cell i to cell j is 2, and the path weight from cell j to cell i is 3.

The following is a special case of taking the minimum value in the path weight: Assume that there is no same-site neighbor information with sequence number j in the cell same-site neighbor information list reported by the same-site cell i (w _{i, j} = 0), but the same-site neighbor The same-site neighbor information list of the cell j reported by the station cell j includes the same-site neighbor information (w _{j, i} >= 1) with the serial number j. At this time, the path from the same-site cell i to the same-site cell j The weight value is set to a minimum value, if the minimum value is preset to 0.5, then w _i,j =0.5.

Step 2109 , according to the obtained path weights between the same-site cells, determine the information of the first neighbor cell on the same site and the information of the second neighbor cell on the same site that have the strongest interference to the current cell.

The same-site cell path map can be drawn according to the obtained path weights between the same-site cells. Through step 21091-step 21095, path expansion is performed in the same-site cell path graph, so as to obtain the positional relationship of the same-site neighboring cells in the same-site cell.

Step 21091. Select any same-site cell as the starting point, and expand in the direction with the largest path weight, and the cell corresponding to the end point of the expanded path is also continuously expanded in the direction with the largest path weight.

Step 21093. When a closed circle appears on the extended path trajectory, mark all co-sited cells on the closed circle as configured.

Step 21091 and step 21093 complete a path expansion.

Step 21095: Use the method of step 21091 and step 21093 to perform other path expansion, but the trajectory of other path expansion cannot include the configured same-site cell, if a closed loop appears in the expanded path trajectory, the closed loop is All the same-site cells of the extended path are marked as configured; when all the same-site cells on the expanded path trajectory are marked as configured or only isolated cells are left, the path expansion ends. Fig. 3a-Fig. 3d are application examples of determining the positional relationship of adjacent cells of the same station according to the predefined rules in step 21091-step 21095.

Fig. 3a is a path diagram of an embodiment of a co-site cell according to the present invention. As shown in Figure 3a, the paths between the cells of the same station are represented by solid lines with arrows, and the path weights corresponding to the path are marked on each path; the letters A, B, C, and D in Figure 3a , F and G represent different cells within the coverage of the same base station.

Fig. 3b is a schematic diagram of the first expansion path of the embodiment of the same-site cell in the present invention. Use the above rules to start the first path expansion from cell A of the same station. The path trajectory after expansion is: A→F→C→B→G→B; the path trajectory forming a closed loop in this path trajectory is B→G → B, the closed circular path trajectory including two same-site cells is called a binary ring, and the closed circular path trajectory is B→G→B, which can be expressed as a binary ring $B\&LeftRightArrow;G$ . The same-site cells B and G are marked as configured in Fig. 3b, so that the same-site cells B and G cannot be included in the expanded path trajectory of other paths afterwards.

Fig. 3c is a schematic diagram of the second expansion path of the same-site cell embodiment of the present invention. On the basis of the schematic diagram of the expansion path shown in Figure 3b, the second path expansion is carried out. This time the path expansion does not pass through the same station cells B and G; the path trajectory after the expansion according to the above-mentioned rules is A→F→C →D→F; according to the expanded path trajectory, a closed loop path trajectory can be obtained: F→C→D→F; the closed loop path trajectory including 3 or more cells at the same station is called a multi-element loop. Afterwards, the expanded path trajectories of other paths cannot include co-site cells B, G, F, C, and D.

Fig. 3d is a schematic diagram of an isolated cell in an embodiment of a co-site cell according to the present invention. As shown in Figure 3d, it is obvious that cell A on the same site cannot form a closed loop path trajectory with other cells on the same site, and the cell on the same site that cannot form a closed loop path trajectory with other cells on the same site is called an isolated cell.

Since the multi-element ring (such as: F→C→D→F) is a closed ring, if the starting point F and the end point F of the multi-element ring are taken as the current cell, the two same-site neighbors C and D adjacent to the current cell F That is, the two same-site neighboring cells with the strongest interference to the current cell F. For ease of description, the following names are based on the relative positional relationship between the two co-site neighbors C and D and the current cell F, for example: it will start from the current cell F, follow the direction of path expansion, and be adjacent to the current cell F The same-site neighboring cell C is called the upper-end neighboring cell (that is, the first same-site neighboring cell in the embodiment of the present invention); starting from the current cell F, along the opposite direction of the path extension, and adjacent to the current cell F The adjacent cell D on the same site is called the lower adjacent cell (that is, the second adjacent cell on the same site in the embodiment of the present invention).

The isolated co-site cell and the co-site cell on the dual ring do not have two co-site neighbors with the strongest interference, so time-domain interference coordination is not considered; RSRP reporting processing and neighbor relationship update can be performed.

Step 23. Obtain the information of the edge users in the current cell, take the edge users interfered by the first co-site neighbor cell as the first edge users, and take the edge users interfered by the second co-site neighbor cell as the first edge users Second edge users.

After obtaining the information of the first co-site neighbor cell and the second co-site neighbor cell of the current cell, the first co-site neighbor cell interfered by the first co-site neighbor cell in the current cell can be obtained by querying the edge user neighbor cell information table. Edge user information, and second edge user information in the current cell that is interfered by a second co-site neighbor cell.

Step 25: Obtain the resource occupancy rate of the first edge user in the current cell as the first resource occupancy rate, and acquire the resource occupancy rate of the second edge user in the current cell as the second resource occupancy rate.

所述

为每个统计时间区间时长内，第一边缘用户在当前小区占用的资源块总量；并采用公式(2)计算所述第一资源占有率：Obtaining the first resource occupancy rate in this step includes: obtaining N _RB , which is the total amount of physical shared channel frequency resource blocks (Resource Blocks, RB for short) allocated by the base station for the current cell; _obtaining

said

For each statistical time interval, the total amount of resource blocks occupied by the first edge user in the current cell; and formula (2) is used to calculate the first resource occupancy rate:

${\mathrm{<span\; class="notranslate">\; R</span>}}^{<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; +</span><span\; class="notranslate">\; )</span>}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; 1</span>}}{{\mathrm{<span\; class="notranslate">\; N</span>}}_{\mathrm{<span\; class="notranslate">\; RB</span>}}<span\; class="notranslate">\; \&CenterDot;</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; intra</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; itv</span>}}}\underset{\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}}{\overset{{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; intra</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; itv</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; m</span>}}_{\mathrm{<span\; class="notranslate">\; l</span>}}^{<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; +</span><span\; class="notranslate">\; )</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; )</span>$

In formula (2), R ^{(i, +)} is the occupancy rate of the first resource; T _{intra_itv} is the statistical time interval; l is the duration of each statistical time interval (for example: one TTI or several).

所述

为每个统计时间区间时长内，第二边缘用户在当前小区占用的资源块总量；并采用公式(3)计算所述第二资源占有率： _Obtaining the second resource occupancy in this step includes: obtaining N _RB , which is the total amount of physical shared channel frequency resource blocks allocated by the base station for the current cell; obtaining

said

For each statistical time interval, the total amount of resource blocks occupied by the second edge user in the current cell; and formula (3) is used to calculate the second resource occupancy rate:

${\mathrm{<span\; class="notranslate">\; R</span>}}^{<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; )</span>}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; 1</span>}}{{\mathrm{<span\; class="notranslate">\; N</span>}}_{\mathrm{<span\; class="notranslate">\; RB</span>}}<span\; class="notranslate">\; \&CenterDot;</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; intra</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; itv</span>}}}\underset{\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}}{\overset{{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; intra</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; itv</span>}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; m</span>}}_{\mathrm{<span\; class="notranslate">\; l</span>}}^{<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; )</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 3</span>}<span\; class="notranslate">\; )</span>$

In the formula (3), R ^{(i, -)} is the occupancy rate of the second resource.

According to the first resource occupancy rate R ^{(i, +)} of the first edge user adjacent to the first co-site neighbor cell in the current cell, and the second resource occupancy of the second edge user adjacent to the second co-site neighbor cell The calculation result of the occupancy ratio R ^{(i, -)} may determine whether to enable or disable time-domain interference coordination for the first edge user and the second edge user.

Step 27, comparing the first resource occupancy rate R ^{(i, +)} and the second resource occupancy rate R ^{(i, -)} with the first threshold value S _{intra_on} and the second threshold value S _{intra_off} respectively, if the first Resource occupancy rate R ^{(i, +)} and the second resource occupancy rate R ^{(i, -)} are both less than the first threshold value S _{intra_on} , then perform step 29; if the first resource occupancy rate R ^{(i, +)} is greater than the first threshold value S intra_on If the second threshold S _{intra_off} or the second resource occupancy rate R ^{(i, -)} is greater than the second threshold S _{intra_off} , step 213 is executed.

Step 29. When the first resource occupancy rate R ^{(i, +)} and the second resource occupancy rate R ^{(i, -)} are respectively less than the first threshold value S _{intra_on} (that is, formula (4) is satisfied), the current The cell starts time-domain interference coordination for the first edge user and the second edge user; step 211 is executed.

R ^{(i, +)} < S _{intra_on} and R ^{(i, -)} < S _{intra_on} (4)

Formula (4) indicates that the scheduling task of the current cell is not too heavy compared with the first neighbor cell on the same site and the second neighbor cell on the same site, and the edge load of the current cell is relatively low. The time-domain interference coordination performed by users is to allocate resources to the first edge user and the second edge user in turn in different time periods.

For example, a transmission time interval (TTI) may be used as a time interval to alternately allocate resources (such as frequency resources) to the first edge user and the second edge user. Assume that a statistical time interval is divided into several transmission time intervals (TTIs), and several transmission time intervals (TTIs) arranged in chronological order, in the transmission time intervals with odd numbers (for example: the first, third, fifth, and seventh When waiting for an odd-numbered transmission time interval, that is, an odd-numbered frame), scheduling can be performed for the first edge user adjacent to the first co-site neighbor cell in the current cell on all available physical shared channel (PSCH for short) frequency bands of the system, That is, allocate frequency resources for the first edge user on all available physical shared channel (PSCH for short) frequency bands of the system; , i.e. even frames), scheduling can be performed on all available PSCH frequency bands of the system for the second edge user adjacent to the second co-site neighbor cell in the current cell, that is, on all available PSCH frequency bands of the system is the second edge user Users allocate frequency resources. In this way, resource scheduling for the first edge user and the second edge user is staggered in time.

The selection of the specific value of the first threshold value S _{intra_on} in this step needs to consider the resource occupancy rate (that is, the edge load) of the edge users in a period of time (the length of the time value should be considered), and the specific value can be carried out according to actual needs. select. The time-domain interference coordination enabled in step 29 can stagger the interference coordination between neighboring cells of the same station with the strongest interference in time, effectively reducing the interference between cells.

Step 211: If a user in the first edge users or a user in the second edge users requests cell switching, stop the time domain interference coordination for the user requesting cell switching.

For example: if a user among the first edge users requests to switch cells, in order to avoid delaying the switching of the user, at this time, the time-domain interference coordination for the user who initiates the same-site cell switching request can be stopped, and the user Scheduling resources to successfully complete the handover between cells on the same site.

Step 213, when the first resource occupancy rate R ^{(i, +)} or the second resource occupancy rate R ^{(i, -)} is greater than the second threshold value S _{intra_off} (that is, satisfying the formula (5)), the current cell is closed Time-domain interference coordination for the first edge user and the second edge user; go to step 215 .

R ^{(i, +)} > S _{intra_off} or R ^{(i, -)} > S _{intra_off} (5)

Formula (5) indicates that the first edge user adjacent to the first co-site neighbor in the current cell, or the second edge user in the current cell and the second co-site neighbor has a heavy load. At this time, the base station stops the time of the current cell domain interference coordination. If the base station still performs time-domain interference coordination for the current cell when the load at the edge of the current cell is heavy, the service scheduling capacity of the users at the edge of the current cell cannot be guaranteed.

The selection of the value of the second threshold value S _{intra_off} in this step requires the same factors as the first threshold value S _{intra_on} , that is, the resource occupancy rate ( That is, the edge user load), the specific value can be selected according to actual needs.

Step 215, enable frequency domain interference coordination for the first edge user and the second edge user for the current cell.

If the load of the current cell is heavy, the base station does not perform time-domain interference coordination for the current cell. At this time, in order to reduce inter-cell interference, a mode of frequency domain interference coordination may be enabled for the current cell.

Frequency domain interference coordination is to allocate resources for the first edge user and the second edge user on different frequencies. Its specific implementation method, for example: using one end value of the PSCH frequency band (such as: high end) as a reference starting point, allocate frequency resources for the first edge user; taking the other end value of the PSCH frequency band (such as: low end) Two edge users are assigned frequency resources. In this way, the frequency band for frequency selective scheduling of the current cell edge user can be staggered as far as possible on the frequency band, so as to avoid interference. Assuming that the PSCH frequency band is 1000MHz-2200MHz, then 1000MHz can be used as an end value of the PSCH frequency band, 1000MHz can be used as a reference starting point, and frequency resources are allocated for the first edge users from low to high frequencies; and 2200MHz can be used as the PSCH frequency band The other end value of , taking 2200MHz as a reference starting point, and assigning frequency resources to the second edge users from high to low frequencies.

In this embodiment, the edge load of the cell is judged based on the RB resources occupied by the edge users of the current cell according to the statistics of the RB resources occupied by the edge users of the cell. Time-domain interference coordination of edge users adjacent to the same station neighbor cell. When the time-domain interference coordination is turned on, the resource scheduling of the adjacent edge users of the two co-site neighbor cells is staggered in time, and resource scheduling is performed on the principle of ensuring the handover priority of the edge users between co-site cells. When the time-domain interference coordination is turned off, the frequency-domain interference coordination can be turned on, and the resource scheduling of the adjacent edge users of the two neighboring cells of the same station is staggered on the frequency band, thereby minimizing inter-cell interference and improving system performance. .

Device embodiment one

FIG. 4 is a schematic diagram of a first embodiment of a control device for co-station adjacent cell interference coordination according to the present invention. As shown in Figure 4, this embodiment includes:

Same-site neighbor information acquisition module 41 , edge user information acquisition module 42 , resource occupancy rate acquisition module 43 , time domain interference coordination module 44 and time domain interference coordination enabling module 45 .

The same-site neighboring cell information acquisition module 41 is used to obtain two neighboring cells belonging to the same base station that interfere with the current cell, namely the first same-site neighboring cell and the second same-site neighboring cell.

For example, the information acquisition module 41 of adjacent cells of the same station can measure the reference signal received power RSRP of each adjacent cell according to the information reported by the user of the current cell, and determine two same stations that interfere with the current cell and belong to the same base station. Neighboring cells, preferably, determine two co-site neighboring cells with the most serious interference to the current cell as the first co-site neighboring cell and the second co-site neighboring cell.

The edge user information acquisition module 42 is used to acquire the information of the edge users in the current cell, and the edge users who are interfered by the first co-site neighbor cell are taken as the first edge users, and the edge users who are interfered by the second co-site neighbor cell are used as the first edge users. The interfering edge user acts as the second edge user.

The edge user information acquisition module 42 can further determine the edge user information adjacent to these two co-site neighbors in the current cell according to the determined two co-site neighbors with the strongest interference to the current cell, namely: The edge user interfered by the same-site adjacent cell is regarded as the first edge user, and the edge user interfered by the second same-site adjacent cell is regarded as the second edge user.

The resource occupancy rate obtaining module 43 is used to obtain the resource occupancy rate of the first edge user in the current cell as the first resource occupancy rate, and obtain the resource occupancy rate of the second edge user in the current cell as the second resource occupancy rate. Resource occupancy.

The first resource occupancy rate represents the ratio of the number of resource blocks in the current cell occupied by the first edge user to the total amount of physical shared channel frequency resource blocks allocated by the base station to the current cell within a statistical time interval; the second resource occupancy rate is represented in Within a statistical time interval, the ratio of the number of resource blocks in the current cell occupied by the second edge user to the total amount of physical shared channel frequency resource blocks allocated by the base station to the current cell. The current traffic volume of the first edge user and the second edge user and the edge load of the current cell can be reflected by the first resource occupancy rate and the second resource occupancy rate.

The time domain interference coordination module 44 is configured to alternately allocate resources to the first edge user and the second edge user in different time periods.

For example, frequency resources may be allocated to the first edge user and the second edge user alternately or in turn by taking the transmission time interval as a time interval. Specifically: in a transmission time interval with an odd number, allocate frequency resources to the first edge user; and in a transmission time interval with an even number, allocate frequency resources to the second edge user.

The time-domain interference coordination enabling module 45 is configured to enable the time-domain interference coordination module 44 when the first resource occupancy rate is less than a first threshold and the second resource occupancy rate is less than the first threshold.

The selection of the specific value of the first threshold needs to consider the resource occupancy rate (that is, the load of the edge) of the edge users within a period of time (the length of the time value needs to be considered), and the specific value can be selected according to actual needs. The time domain interference coordination module 44 is turned on, that is, time domain interference coordination is started for the first edge user and the second edge user. The time-domain interference coordination module 44 is turned off, that is, the time-domain interference coordination for the first edge user and the second edge user is stopped.

In this embodiment, by obtaining the information of two co-site neighboring cells that interfere with the current cell, and calculating the resource occupancy rates of edge users adjacent to the two co-site neighboring cells, respectively, and then judging the load situation at the edge of the current cell, and When the resource occupancy rates of the edge users adjacent to the two co-site neighbors are both less than the first threshold, the time-domain interference coordination for the first edge user and the second edge user is started, so that the time-staggered Interference coordination between adjacent cells of two interfering stations effectively reduces inter-cell interference, reduces the impact of inter-cell interference on current cell edge users, improves edge user throughput and cell coverage, and does not affect the cell as much as possible throughput, thereby improving system performance.

Device embodiment two

FIG. 5 is a schematic diagram of a second embodiment of a control device for co-station adjacent cell interference coordination according to the present invention. As shown in FIG. 5 , the difference between this embodiment and the embodiment shown in FIG. 4 is that the device for controlling interference coordination between adjacent cells of the same station in this embodiment further includes: a module 47 for disabling interference coordination in the time domain.

The time-domain interference coordination disabling module 47 is configured to close the time-domain interference coordination module 44 when the first resource occupancy rate is greater than a second threshold value or the second resource occupancy rate is greater than a second threshold value, that is, stop Time-domain interference coordination performed by the first edge user and the second edge user.

The selection of the specific value of the second threshold needs to consider the resource occupancy rate (that is, the load of the edge) of the edge users within a period of time (the length of the time value), and can be selected according to actual needs.

The time-domain interference coordination enabling module 45 and the time-domain interference coordination disabling module 47 trigger cooperative work when the first resource occupancy rate or the second resource occupancy rate meets different conditions, realizing the situation where there are many user services and heavy loads at the cell edge In this case, the interference coordination of the same-site cell is turned off; when there are few users at the edge of the cell and the load of the cell edge is light, the interference coordination of the same-site cell is turned on; so as to realize the time-domain interference coordination according to the dynamic distribution of users and services in the cell The self-adaptive adjustment minimizes the interference coordination of the cells of the same station, which is beneficial to improve the system performance.

On the basis of the above technical solution, the device for controlling interference coordination between adjacent cells of the same station may further include: a frequency domain interference coordination enabling module 46 and a frequency domain interference coordination module 48 .

The frequency domain interference coordination enabling module 46 is configured to enable the frequency domain interference coordination module 48 when the time domain interference coordination disabling module 47 disables the time domain interference coordination module 44, that is, enable the first edge user and the second edge user. Frequency Domain Interference Coordination.

If the current cell is under heavy scheduling and load conditions, the base station does not perform time-domain interference coordination for different edge users in the current cell; at this time, the frequency-domain interference coordination module 48 can be enabled by the frequency-domain interference coordination enabling module 46, and the Coordinate the frequency domain interference of the current cell to reduce inter-cell interference.

The frequency domain interference coordination module 48 is configured to allocate resources to the first edge user and the second edge user on different frequencies. For example, using one end of the physical shared channel frequency band as a reference starting point, allocate frequency resources to the first edge user; using the other end of the physical shared channel frequency band as a reference starting point, allocate frequency resources to the second edge user frequency resources.

Through the second frequency resource allocation module, the two end values of the frequency band are used as the reference starting point for frequency resource allocation of the first edge user and the second edge user respectively, and the frequency selection and scheduling frequency band of the current cell edge user can be staggered as much as possible on the frequency band, Reduce inter-cell interference on the same site.

On the basis of the above technical solution, the device for controlling the interference coordination of adjacent cells of the same station may further include: a time domain interference coordination interruption module 49 .

The time-domain interference coordination interruption module 49 is used for users in the first edge users or users in the second edge users, when requesting to switch cells, notify the time-domain interference coordination module 44 to stop responding to the users who request to switch cells time-domain interference coordination.

By setting the time-domain interference coordination interruption module 49, resource scheduling can be ensured based on the principle of priority for handover between cells of the edge user on the same site, and switching delays can be avoided for users who need to perform cell handover.

A specific implementation entity of the embodiment of the control apparatus for co-site adjacent cell interference coordination of the present invention may include: a base station, a base station controller, or other network elements that perform interference coordination control. The principle of implementing the coordinated control of intra-site adjacent cell interference in the embodiment of the control device for co-site adjacent cell interference coordination of the present invention can be referred to the descriptions of the corresponding embodiments in FIG. 1-FIG.

Base station embodiment

FIG. 6 is a schematic diagram of an embodiment of a base station including a control device for co-station adjacent cell interference coordination according to the present invention. As shown in FIG. 6 , this embodiment includes: a control device 61 and a receiving module 62 for inter-site adjacent cell interference coordination.

The receiving module 62 is configured to receive user information reported by users in the same cell.

The receiving module 62 may use a transceiver station to realize the function of receiving user information. The base station has at least one transceiver station to receive information reported by users in the cell, for example, RSRP information of the current cell, RSRP information of neighboring cells, RB resources occupied by the user, and so on.

The control device 61 for coordinating adjacent cell interference on the same site is used to use the information received by the receiving module 62 to obtain two adjacent cells belonging to the base station that interfere with the current cell of the base station, namely the first adjacent cell on the same site and the second cell adjacent to the base station. Two co-site adjacent cells: acquiring information about edge users in the current cell, using the edge users interfered by the first co-site adjacent cells as first edge users, and using the edge users interfered by the second co-site adjacent cells The edge user is used as a second edge user; the resource occupancy rate of the first edge user in the current cell is obtained as the first resource occupancy rate, and the resource occupancy rate of the second edge user in the current cell is obtained as the second resource occupancy rate. Resource occupancy: when the first resource occupancy is less than the first threshold and the second resource occupancy is less than the first threshold, enable the time domain for the first edge user and the second edge user interference coordination.

In the embodiments provided by the present invention, the specific implementation entity of the receiving module may include: a base transceiver station or a network element with similar functions. For specific detailed functional modules of the device for controlling interference coordination between neighboring cells of the same station, reference may be made to the descriptions in the corresponding embodiments in FIG. 4 and FIG. 5 , and details will not be repeated here. The base station embodiment of the present invention includes a control device for co-station adjacent cell interference coordination to realize the principle of co-station adjacent cell interference coordination control, which can be referred to the descriptions of the corresponding embodiments in Fig. 1-Fig. 3d, and will not be repeated here.

In the base station embodiment of the present invention including a control device for co-station adjacent cell interference coordination, when the resource occupancy rates of two adjacent edge users adjacent to the same-station adjacent cell with the strongest interference to the current cell are both less than the first threshold value ( That is, when the edge load of the current cell is small), the time-domain interference coordination between the first co-site neighbor cell and the second co-site neighbor cell is enabled for the current cell, so as to stagger the most interfering co-site neighbor cells in time The impact of interference effectively reduces inter-cell interference, reduces the impact of inter-cell interference on current cell edge users, and improves system performance.

Those skilled in the art can understand that the accompanying drawing is only a schematic diagram of a preferred embodiment, and the modules or processes in the accompanying drawing are not necessarily necessary for implementing the present invention.

Those of ordinary skill in the art can understand that: the modules in the device in the embodiment may be distributed in the device in the embodiment according to the description in the embodiment, or may be changed and located in one or more devices different from the embodiment. The modules in the above embodiments can be combined into one module, and can also be further split into multiple sub-modules.

The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.

Those of ordinary skill in the art can understand that all or part of the steps for realizing the above-mentioned method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the It includes the steps of the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (14)

1. the control method with the station adjacent cell interference is characterized in that, comprising:

Obtain two neighbor cells that belong to same base station that have interference with current area, be respectively first with adjacent area, station and second adjacent area, station together;

Obtain the information of the edge customer in the described current area, will be subjected to described first edge customer that disturbs with the adjacent area, station, will be subjected to described second edge customer that disturbs with the adjacent area, station as second edge customer as first edge customer;

Obtain described first edge customer in the resources occupation rate of described current area as the first resource occupation rate, obtain described second edge customer in the resources occupation rate of described current area as the second resource occupation rate;

During less than first threshold value, open time domain interference coordination less than first threshold value and the described second resource occupation rate in the described first resource occupation rate to described first edge customer and described second edge customer.

2. the control method with the station adjacent cell interference according to claim 1 is characterized in that, also comprises:

During greater than second threshold value, close time domain interference coordination greater than second threshold value or the described second resource occupation rate in the described first resource occupation rate to described first edge customer and described second edge customer.

3. the control method with the station adjacent cell interference according to claim 1 is characterized in that, also comprises:

Belong to the user of described first edge customer or belong to the user of described second edge customer, during the request switching cell, stop time domain interference coordination the described user of request switching cell.

4. according to the described arbitrary control method of claim 1-3, it is characterized in that there are two neighbor cells that belong to same base station that disturb in described obtaining with current area, be respectively first, comprising with adjacent area, station and second adjacent area, station together with the adjacent cell interference of standing:

Obtain current area is disturbed the strongest two neighbor cells that belong to same base station, stand adjacent area and described second together with the adjacent area, station as described first respectively.

5. according to the described arbitrary control method of claim 1-3, it is characterized in that with the station adjacent cell interference:

The described first resource occupation rate is illustrated in one section statistics time interval, the Resource Block quantity of the current area that first edge customer takies, with the base station be the ratio of the current area Physical Shared Channel frequency resource block total amount of distributing;

The described second resource occupation rate is illustrated in one section statistics time interval, the Resource Block quantity of the current area that second edge customer takies, with the base station be the ratio of the current area Physical Shared Channel frequency resource block total amount of distributing.

6. according to the described arbitrary control method of claim 1-3, it is characterized in that described time domain interference coordination comprises with the station adjacent cell interference:

In the different time periods, alternately be described first edge customer and the described second edge customer Resources allocation.

7. the control method with the station adjacent cell interference according to claim 6 is characterized in that, described is described first edge customer and the described second edge customer Resources allocation alternately in the different time periods, comprising:

In sequence number is the transmission time interval of odd number, be the described first edge customer dividing frequency resource, in sequence number is the transmission time interval of even number, is the described second edge customer dividing frequency resource, and described sequence number is the serial number that in chronological sequence arrange in the transmission time interval.

8. the control method with the station adjacent cell interference according to claim 2 is characterized in that described time domain interference coordination of closing described first edge customer and described second edge customer also comprises:

Unlatching is coordinated the frequency domain interference of described first edge customer and described second edge customer.

9. the control method with the station adjacent cell interference according to claim 8 is characterized in that, described frequency domain interference is coordinated, and comprising:

An end value with the Physical Shared Channel frequency range of described current area is with reference to starting point, is the described first edge customer dividing frequency resource;

Another end value of Physical Shared Channel frequency range with described current area is with reference to starting point, is the described second edge customer dividing frequency resource.

10. the control device with the station adjacent cell interference is characterized in that, comprising:

With the neighboring BS information acquisition module of standing, be used to obtain two neighbor cells that belong to same base station that have interference with current area, be respectively first with adjacent area, station and second adjacent area, station together;

Edge customer information acquisition module, be used for obtaining the information of the edge customer of described current area, to be subjected to described first edge customer that disturbs with the adjacent area, station, will be subjected to described second edge customer that disturbs with the adjacent area, station as second edge customer as first edge customer;

Resource occupation rate acquisition module, be used to obtain described first edge customer in the resources occupation rate of described current area as the first resource occupation rate, obtain described second edge customer in the resources occupation rate of described current area as the second resource occupation rate;

The time domain interference coordination module is used for alternately being described first edge customer and the described second edge customer Resources allocation in the different time periods;

The time domain interference coordination opening module is used for during less than first threshold value, opening described time domain interference coordination module less than first threshold value and the described second resource occupation rate in the described first resource occupation rate.

11. the control device with the station adjacent cell interference according to claim 10 is characterized in that, also comprises:

The time domain interference coordination closing module is used for during greater than second threshold value, closing described time domain interference coordination module greater than second threshold value or the described second resource occupation rate in the described first resource occupation rate.

12. the control device with the station adjacent cell interference according to claim 10 is characterized in that, also comprises:

The time domain interference coordination interrupt module, be used for as the user of described first edge customer or the user in described second edge customer, request is during switching cell, notifies described time domain interference coordination module to stop time domain interference coordination to the described user of request switching cell.

13. the control device with the station adjacent cell interference according to claim 11 is characterized in that, also comprises:

The frequency domain interference Coordination module, the end value of Physical Shared Channel frequency range that is used for described current area is with reference to starting point, be the described first edge customer dividing frequency resource, another end value with the Physical Shared Channel frequency range of described current area is with reference to starting point, is the described second edge customer dividing frequency resource;

Frequency domain interference is coordinated opening module, is used for opening described frequency domain interference Coordination module when described time domain interference coordination closing module is opened.

14. a base station that comprises the control device of the described arbitrary station together of claim 10-13 adjacent cell interference comprises:

Receiver module is used to receive the information of reporting of user of the current area of base station;

With the control device of station adjacent cell interference, the information that is used to utilize described receiver module to receive is obtained with described current area and is had two neighbor cells that belong to described base station when disturbing, be respectively first with adjacent area, station and second with the adjacent area, station; Obtain the information of the edge customer in the described current area, will be subjected to described first edge customer that disturbs with the adjacent area, station, will be subjected to described second edge customer that disturbs with the adjacent area, station as second edge customer as first edge customer; Obtain described first edge customer in the resources occupation rate of described current area as the first resource occupation rate, obtain described second edge customer in the resources occupation rate of described current area as the second resource occupation rate; During less than first threshold value, open time domain interference coordination less than first threshold value and the second resource occupation rate in the described first resource occupation rate to described first edge customer and described second edge customer.

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