WO2015109650A1

WO2015109650A1 - Grouping management method and grouping management system for tdd cross interference, and base station

Info

Publication number: WO2015109650A1
Application number: PCT/CN2014/073729
Authority: WO
Inventors: 张晨璐; 张云飞; 曹一卿
Original assignee: 东莞宇龙通信科技有限公司; 宇龙计算机通信科技(深圳)有限公司
Priority date: 2014-01-24
Filing date: 2014-03-19
Publication date: 2015-07-30
Also published as: CN103763710A; CN103763710B

Abstract

The present invention provides a grouping management method and a grouping management system for TDD cross interference, and a base station. The grouping management method comprises: grouping multiple cells by using a grouping -based interference coordination technology; and regrouping the multiple cells belonging to a same group according to an interference relationship, so that the cells in each group use a same TDD uplink and downlink subframe configuration parameter, and different groups use a same or different TDD uplink and downlink subframe proportional configuration parameter. By using the technical scheme of the present invention, cells can be divided into multiple groups, the cells in different groups after being regrouped can use a different TDD uplink and downlink subframe proportion for data transmission, thereby improving dynamic configuration gain, and effectively controlling cross interference.

Description

Group management method for TDD cross interference and packet management system, base station

The present invention relates to the field of communications technologies, and in particular, to a packet management method for TDD cross interference, a packet management system for TDD crossover, and a base station. Background technique

In order to avoid the performance loss caused by strong cross interference, 3GPP proposes a Cell Cluster Interference Mitigation (CCIM). When the base station is deployed, the scheme dynamically processes the cells according to the transmission loss or interference level between the base stations. Cells with low transmission loss or high inter-cell interference levels are grouped into one group; base stations with large transmission loss or small inter-cell interference levels are classified into different groups. All the base stations in the group must be configured with the same TDD uplink-downlink subframe ratio configuration to avoid strong cross-interference. Different groups can be configured with different TDD uplink-downlink subframe ratio configurations to adaptively uplink and downlink traffic load conditions. As shown in FIG. 1, for a plurality of cells served by the macro base station 102, after processing by CCIM technology, all cells in the packet 104, the packet 106, and the packet 108 must be configured to the same TDD configuration, and the packets 104, packets A different TDD uplink and downlink subframe ratio configuration may be configured between the 106 and the packet 108.

The CCIM scheme gives an effective TDD dynamic subframe proportional configuration interference avoidance method, but still has the following drawbacks:

1. In the case of dynamically configured cell dense deployment, the dynamic configuration efficiency is low because the inter-cell interference relationship is complex and interrelated.

2. In the case of dynamically configuring cell dense deployment, the more cells included in each packet, the smaller the gain generated by dynamic configuration. As shown in "Packet 108" in Figure 1, since 7 cells in the packet 108 maintain interrelated interference relationships, if you want to avoid strong cross interference, you must configure 7 cells to be the same TDD uplink and downlink. Frame ratio. In this way, for each cell, it is inevitable that it is only based on its own uplink and downlink like an isolated cell. The traffic load ratio is flexible and dynamic. The TDD uplink and downlink subframe ratio configuration, the gain obtained by dynamic configuration will be greatly reduced.

Therefore, in order to further improve the efficiency and flexibility of dynamic allocation of TDD uplink and downlink subframes, an efficient packet scheme is urgently needed to achieve more efficient TDD subframe dynamic configuration. Summary of the invention

The present invention is based on the above problems, and proposes a new technical solution, which can divide a cell into multiple packets, and supports cells in different groups after re-grouping to use different TDD uplink and downlink subframe ratios for data transmission. Thereby increasing the dynamic configuration gain and effectively controlling cross interference.

In view of this, the present invention provides a packet management method for TDD cross interference, which includes: grouping multiple cells by using a packet-based interference coordination technique, and performing the following steps on multiple cells belonging to the same group: A) In the multiple cells of the same group, if the interference value between any two cells is greater than or equal to the preset interference threshold, an interference relationship is established between the two cells, and the same group is used. All interference relationships between multiple cells constitute a corresponding interference relationship chain; B) grouping multiple cells corresponding to each of the interference relationship chains into the same group, and cells having no interference relationship with other cells are independently grouped; The cells in each group adopt the same TDD uplink and downlink subframe configuration parameters, and use the same or different TDD uplink and downlink subframe proportion configuration parameters between different groups.

In this technical solution, on the basis of the CCIM group, by grouping the cells in the same group again, so that there is no interference between the groups or the interference is weak (for example, less than the preset interference threshold), in these groups Dynamically configure the TDD uplink and downlink subframe ratio configuration parameters to help improve the gain of dynamic configuration.

At the same time, interference between cells in the same interference relationship chain is strong (for example, greater than or equal to a preset interference threshold), and interference between cells in different interference relationship chains is weak, and the interference relationship chain is established and the corresponding Cell grouping helps to improve the accuracy of the packet, ensuring control of cross-interference while ensuring dynamic configuration gain.

In the above technical solution, preferably, if the number of cells in any group is greater than a preset number, the group management method further includes: determining any one according to the corresponding interference relationship chain. The interference level of each cell in the group to other cells, and the cell with the greatest degree of interference to other cells as the interference isolation cell; controlling the interference isolation cell to isolate the remaining cells in any one of the groups, so as to The remaining cells are divided into multiple sub-packets, and the same or different TDD uplink and downlink subframe proportion configuration parameters are used between the multiple sub-packets.

In this technical solution, for a group with a large number of cells, by selecting an interference isolation cell, the cells in the group are isolated and further grouped, thereby further improving the dynamic configuration gain while avoiding the existence of cells in the group. Cross interference.

In the above technical solution, preferably, the one or more of the cells that have the greatest degree of interference to other cells as the interference isolation cell specifically includes: acquiring each cell in the any group and other cells. Interference relationship existing between the two; the cell with the largest number of interference relationships is used as the cell with the greatest degree of interference to other cells.

In this technical solution, by counting the number of relationships in which each cell has interference with other cells, it can be used as a criterion for judging whether or not it is selected as an interference isolated cell. By recording the above criteria (of course, other standards can also be used), automatic selection of interference-isolated cells can be implemented by the base station or other devices.

Of course, the selection of the interference isolated cell can also be implemented in other ways. For example, the user manually selects the interference isolation cell according to the specified standard. At the same time, the base station or other equipment can compare and analyze the result of the automatic selection with the result manually selected by the user, thereby continuously correcting the above criteria, in order to achieve a more accurate and more suitable cell selection scheme.

In the above technical solution, preferably, the method further includes: determining, when the number of the most frequently used cells in the interference relationship is multiple, determining interference between each of the cells and other cells in any one of the groups The statistical value of the value; the cell with the largest corresponding statistical value is used as the cell with the greatest degree of interference to other cells.

In the technical solution, by collecting the interference value, the statistic value of all the interference values corresponding to each cell is obtained, so that the interference degree to other cells can be more accurately reflected on the basis of the number of interference relationships. The largest cell, in order to achieve accurate selection of the interference isolation cell, to avoid strong cross interference between cells in the secondary packet.

In any one of the foregoing technical solutions, preferably, the process of calculating an interference value between any two cells includes: calculating a path loss between the two two cells, and converting into the interference value; The value of the path loss is inversely related to the interference value.

In this technical solution, it is proposed to represent the corresponding interference value according to the path loss between cells; those skilled in the art should understand that it is not used for limitation here, and it is obvious that other parameters can also be used to reflect the inter-cell interference value. , such as signal reception strength.

The invention also provides a packet management system for TDD cross interference, comprising: a packet processing unit, configured to group multiple cells by using a packet-based interference coordination technology; and a relationship chain establishing unit, which is used in the same group In the multiple cells, if the interference value between any two cells is greater than or equal to the preset interference threshold, an interference relationship is established between the two cells, and all interferences between multiple cells in the same group are used. The relationship constitutes a corresponding interference relationship chain; the parameter configuration unit is configured to divide the plurality of cells corresponding to each of the interference relationship chains into the same group, and the cells having no interference relationship with the remaining cells are independently grouped, and each is made The cells in the group adopt the same TDD uplink and downlink subframe configuration parameters, and adopt the same or different TDD uplink and downlink subframe proportion configuration parameters between different groups.

In the foregoing technical solution, the method further includes: a cell selection unit, configured to determine, in the case that the number of cells in any group is greater than a preset number, determine each of the groups according to the corresponding interference relationship chain The interference degree of the cell to other cells, and the cell with the greatest degree of interference to other cells is used as the interference isolation cell; the data interaction unit is configured to send isolation control signaling to the interference isolation cell, thereby controlling the interference isolation cell The remaining cells in the any group are isolated to divide the remaining cells into multiple sub-packets, and the same or different TDD uplink-downlink subframe proportion configuration parameters are used between the multiple sub-packets.

In this technical solution, for a group with a large number of cells, the isolation is small by selecting interference. The area is used to isolate and further group the cells in the group, so as to further improve the dynamic configuration gain, and avoid cross interference between cells in the group.

In the above technical solution, preferably, the cell selection unit includes: a relationship acquisition subunit, configured to acquire an interference relationship between each cell in the any group and other cells; and select a processing subunit, The cell with the largest number of interference relationships is used as the cell with the greatest degree of interference to other cells.

In the above technical solution, preferably, the cell selection unit further includes: a statistic value determining subunit, configured to determine each of the plurality of cells having the largest number of interference relationships a statistical value of the interference value between the cell and the other cells in any one of the groups; wherein the selection processing sub-unit is configured to use the cell with the largest corresponding statistical value as the interference degree to the other cells Community.

In any one of the foregoing technical solutions, the method further includes: an interference calculation unit, configured to calculate a path loss between any two cells, and convert the path loss into the interference value, where the path loss value and the interference The values are negatively correlated.

In this technical solution, it is proposed to represent the corresponding interference value according to the path loss between cells; those skilled in the art should understand that it is not used for limitation here, and it is obvious that other parameters can also be used to reflect the inter-cell interference value. , such as signal reception strength. The present invention also provides a base station, comprising the method according to any one of the preceding claims

A packet management system for TDD cross-interference; wherein the base station is a macro base station corresponding to a plurality of cells grouped by using a packet-based interference coordination technology, or a specific dynamically configured base station.

Through the above technical solution, the cell can be divided into multiple groups, and the cells in different groups after re-grouping are used to transmit data by using different TDD uplink and downlink subframe ratios, thereby improving dynamic configuration gain and effectively controlling cross interference. DRAWINGS

1 shows a schematic diagram of grouping cells using packet-based interference coordination techniques; FIG. 2 shows a schematic flow diagram of a packet management method for TDD cross-interference according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of seven radio frames in a TDD system;

4 shows a schematic flow diagram of performing re-grouping of multiple cells of the same group, in accordance with one embodiment of the present invention;

5A to 5C are diagrams showing a packet topology according to an embodiment of the present invention; FIG. 6 is a schematic flow chart showing a cell group management method according to an embodiment of the present invention;

Figure 7 shows a schematic block diagram of a packet management system for TDD cross-interference in accordance with one embodiment of the present invention;

Figure 8 shows a schematic block diagram of a base station in accordance with one embodiment of the present invention. detailed description

The above described objects, features and advantages of the present invention will be more fully understood from the following detailed description. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments of the present application may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the invention may be practiced otherwise than as described herein. Limitations of the embodiments.

I. Cell grouping based on interference relationship 2 shows a schematic flow chart of a packet management method for TDD cross interference according to an embodiment of the present invention.

As shown in FIG. 2, a packet management method for TDD cross interference according to an embodiment of the present invention includes:

Step 202: Group multiple cells by using a packet-based interference coordination technology. Step 204: Perform re-grouping on multiple cells belonging to the same group, and configure TDD uplink and downlink subframe configuration parameters.

For the TDD uplink and downlink subframe proportion configuration parameters, FIG. 3 shows a schematic structural diagram of seven radio frames in the TDD system.

As shown in FIG. 3, after the special subframe 302, the uplink subframe 304, and the downlink subframe 306 are arranged and combined, the corresponding TDD uplink and downlink subframe proportion configuration parameters with configuration numbers 0 to 6 are formed.

For the step 204 shown in FIG. 2, the specific steps are as shown in FIG. 4, including:

Step 204A: In the multiple cells of the same group, if the interference value between any two cells is greater than or equal to a preset interference threshold, an interference relationship is established between the two two cells, and the same All the interference relationships between the multiple cells of the group form a corresponding interference relationship chain; Step 204B, the multiple cells corresponding to each of the interference relationship chains are grouped into the same group, and the cells having no interference relationship with the remaining cells are independent. Grouping

Step 204C: The cells in each group adopt the same TDD uplink and downlink subframe configuration parameter, and use the same or different TDD uplink and downlink subframe proportion configuration parameters between different groups.

In this technical solution, interference between cells in the same interference relationship chain is strong (for example, greater than or equal to a preset interference threshold), and interference between cells in different interference relationship chains is weak, and an interference relationship chain is established. And the corresponding cell grouping is implemented, which helps to improve the accuracy of the grouping, so as to ensure the control of the crossover interference while ensuring the dynamic configuration gain. Specifically, for example, in the CCIM-based packet result shown in FIG. 1, the packet 108 includes seven cells, and if the same TDD uplink and downlink subframe configuration parameters are used, the dynamic configuration gain is greatly reduced.

Based on the above technical solution, the re-grouping can be performed according to the interference relationship between the seven cells, so as shown in FIG. 5A, it can be divided into three groups, that is, a group consisting of eNB1, eNB2, eNB3, and eNB4. 1. A group 2 consisting of eNB5 alone, and a group 3 consisting of eNB6 and eNB7, and the same or different TDD uplink and downlink subframe configuration parameters can be arbitrarily selected between group 1, group 2 and group 3, and get rid of the CCIM scheme. The shackles help achieve a higher dynamic configuration gain.

However, Group 1 includes 4 cells (or base stations) such as eNB1 to eNB4, and the number is still large. Therefore, in order to further improve the dynamic allocation gain of the cell, further grouping operations can be performed on the group 1, which will be described in detail below.

2. Cell grouping based on interference isolation

In the above technical solution, preferably, if the number of cells in any group is greater than a preset number, the packet management method further includes: determining, according to the corresponding interference relationship chain, each cell pair in any one of the groups The interference level of other cells, and the cell with the greatest degree of interference to other cells is used as the interference isolation cell; and the interference isolation cell is controlled to isolate the remaining cells in any one of the groups to divide the remaining cells into multiple The sub-packets, and the same or different TDD uplink and downlink subframe proportion configuration parameters are used between the multiple sub-packets.

For convenience of description, the topology shown in FIG. 5A is formed into a form as shown in FIG. 5B, and each cell or base station is compressed into a corresponding node form, for example, eNB1 corresponds to node VI, and eNB2 corresponds to node V2. The eNB 7 corresponds to the node V7 or the like.

By setting the maximum number of allowed cells in advance, for example, two (may be more or less), the four cells included in the group 1 shown in Fig. 5B obviously need to be grouped again.

For example, as shown in FIG. 5C, the node V3 can be selected as an interference isolation cell, and the VI, V2 is isolated from V4, so that the original group 1 is further grouped, including the sub-groups composed of VI and V2, the sub-group 2 composed of V3 and the sub-group 3 composed of V4, and the sub-group 1 to sub-group 3, the group Between 1 and 3, the same or different TDD uplink and downlink subframe configuration parameters can be arbitrarily selected to help achieve higher dynamic configuration gain.

Preferably, when the interference isolation cell isolates the remaining cells of the multiple cells in the same group, the following:

In one case, the at least one interference isolated cell can be turned off.

In another case, the coverage of the at least one interfering isolated cell may be reduced, such that a coverage dead zone is formed between the at least one interfering isolated cell and all neighbor cells, or the at least one interfering isolated cell and all neighbors are The cross-interference strength in the repeated coverage area between the cells is not greater than the preset interference strength threshold, or the served terminal is not present in the repeated coverage area.

In this technical solution, by physically reducing the coverage of the interfering isolated cell or directly closing the interference isolation cell, the "isolation band" is artificially constructed, so that multiple groups are physically separated to avoid cross interference. Or when the cross-interference of the repeated coverage area is small or there is no serviced terminal, it is obvious that the influence of cross-interference on the terminal can also be avoided. It should be noted that although the coverage of the interfering isolated cell becomes smaller or is closed, since the communication system uses a dynamic configuration of the hybrid base station and the macro base station, the signal coverage of the terminal is not affected.

Preferably, the step of reducing the coverage of the at least one interfering isolated cell comprises at least one of the following or a combination thereof: adjusting a signal transmission power of the base station in the at least one interfering isolated cell, and adjusting an antenna of the base station Height, adjusting the antenna downtilt angle of the base station.

Third, the choice of interference isolation cell

In this technical solution, by counting the number of relationships in which each cell has interference with other cells, it can be used as a criterion for judging whether it is selected as an interference isolation cell. By the above The standard (of course, other standards can also be used) can be used to enable automatic selection of interference-isolated cells by base stations or other devices.

For example, as shown in Figure 5B, both V2 and V3 in Group 1 form two interference relationships with other nodes, so V2 or V3 can be selected as the interference isolation cell for grouping Group 1 again. Specifically, for example, FIG. 5C is a case where the group 1 is separated into a plurality of sub-packets after V3 is selected as the interference-isolated cell.

Preferably, the method further includes: when the number of the most number of cells having the interference relationship is multiple, determining a statistical value of the interference value between each of the cells and other cells in the any group; The cell with the largest corresponding statistical value is the cell with the greatest degree of interference to other cells.

Preferably, the process of calculating the interference value between any two cells includes: calculating a path loss between the two cells and converting the interference value into the interference value; wherein the path loss is The value is inversely related to the interference value.

FIG. 6 shows a schematic flow chart of a cell packet management method according to an embodiment of the present invention.

As shown in FIG. 6, a cell group management method according to an embodiment of the present invention includes: Step 602: Group multiple cells based on a CCIM scheme.

Specifically, as shown in FIG. 1, dividing a plurality of cells into a packet 104, a packet 106, and a packet 108 et al.

Step 604: Determine whether the number of base stations in each group after the grouping is large, such as whether it is greater than or equal to a preset number threshold, such as 2 or more (or less). If yes, go to step 606, otherwise end.

Specifically, for example, the packet 108 shown in Fig. 1 includes 7 cells (or base stations), and further grouping needs to be implemented.

Step 606: Form a corresponding topology based on interference relationships between all base stations in the group. Specifically, the interference relationship can be calculated by calculating path loss between the base stations, etc., and those skilled in the art should understand that calculations such as signal reception strength and the like can also be performed by other means.

Step 608: Taking the path loss as an example, in the topology diagram, any two nodes with low path loss may be connected to form an edge.

Specifically, for example, the packet 108 shown in FIG. 1 constitutes a topology diagram as shown in FIG. 5B (or FIG. 5A, here, FIG. 5B is taken as an example), and is between VI, V2, V3, and V4. The sides that form the connection, and the sides that form the connection between V6 and V7.

Step 610: Calculate the degree corresponding to each node, and select the node with the largest degree of out. Among them, the "degree" corresponding to each node, that is, the number of "edges" with the node as the endpoint.

Specifically, for example, in Figure 5B, both V2 and V3 have a degree of 2 and belong to the node with the largest degree.

Step 612: Determine whether there are multiple nodes with the greatest degree. If yes, go to step 614. Otherwise, go to step 616.

Specifically, for the situation shown in Figure 5B, step 614 is required to effect further selection confirmation.

Step 614: For each node with the largest degree, calculate the path loss average value corresponding to each node, and select the node corresponding to the minimum value as the interference isolation cell.

Specifically, the statistical method is obviously not limited to the above average value, for example, other statistical values such as variance can also be calculated, thereby achieving accurate selection of nodes.

Step 616: If the number of nodes with the largest degree is unique, the node with the largest degree may be directly used as the interference isolation cell. Step 618: Perform, according to the re-grouping of the corresponding group by the interference isolation cell, obtain multiple sub-packets, and dynamically select the TDD uplink-downlink subframe proportion configuration parameter in each sub-packet.

Specifically, for example, in FIG. 5C, by selecting V3 as the interference isolation cell, the secondary packet 1, the secondary packet 2, and the secondary packet 3 are obtained, and between the secondary packets and the group 2 and the group 3, the same or different is adopted arbitrarily. TDD uplink and downlink subframe proportion configuration parameters.

Figure 7 shows a schematic block diagram of a packet management system for TDD cross-interference in accordance with one embodiment of the present invention.

As shown in FIG. 7, a packet management system 700 for TDD cross-interference according to an embodiment of the present invention includes: a packet processing unit 702, configured to group multiple cells by using a packet-based interference coordination technology; a relationship chain establishing unit 704, configured to establish, in a plurality of cells belonging to the same group, an interference relationship between any two cells if the interference value between any two cells is greater than or equal to a preset interference threshold, and the same relationship is established by the same All the interference relationships between the multiple cells of the group form a corresponding interference relationship chain; the parameter configuration unit 706 is configured to divide the multiple cells corresponding to each of the interference relationship chains into the same group, and there is no interference with the remaining cells. The cells of the relationship are grouped independently, and the cells in each group adopt the same TDD uplink and downlink subframe configuration parameters, and the same or different TDD uplink and downlink subframe proportion configuration parameters are used between different groups.

In the above technical solution, the method further includes: a cell selection unit 708, configured to determine, in the case that the number of cells in any group is greater than a preset number, according to a corresponding interference relationship chain, determine each of the groups The interference degree of the cells to other cells, and the cell with the greatest degree of interference to other cells is used as the interference isolation cell; the data interaction unit 710 is configured to The interference isolation cell sends the isolation control signaling, so as to control the interference isolation cell to isolate the remaining cells in the any group to divide the remaining cells into multiple sub-packets, and the multiple sub-packets The same or different TDD uplink and downlink subframe proportion configuration parameters are used.

In the foregoing technical solution, the cell selection unit 708 includes: a relationship acquisition subunit 7082, configured to acquire an interference relationship between each cell in the any group and other cells; 7084. The cell that uses the most interference relationship is used as the cell with the greatest degree of interference to other cells.

In the above technical solution, the cell selection unit 708 further includes: a statistic value determining subunit 1086, configured to determine, in a case where the number of cells having the largest number of interference relationships is multiple a statistical value of the interference value between each cell and other cells in any one of the groups; wherein the selection processing sub-unit 7084 is configured to use the cell with the largest statistical value as the interference to the other cell The most densely populated area.

In any one of the foregoing technical solutions, the method further includes: an interference calculation unit 712, configured to calculate a path loss between any two cells, and convert the interference to the interference value, where the path The value of the loss is inversely related to the interference value.

Figure 8 shows a schematic block diagram of a base station in accordance with one embodiment of the present invention.

As shown in FIG. 8, a base station according to an embodiment of the present invention includes a TDD cross-interference packet management system 700 as shown in FIG. ;; wherein the base station 800 is configured to perform grouping using a packet-based interference coordination technique. A macro base station corresponding to each cell, or a specific dynamically configured base station.

The technical solution of the present invention is described in detail above with reference to the accompanying drawings. The present invention provides a packet management method for TDD cross interference, a packet management system for TDD cross interference, and a base station, which can divide a cell into multiple packets. The cells in different groups after re-grouping are used to transmit data using different TDD uplink and downlink subframe ratios, thereby improving dynamic configuration gain and effectively controlling cross interference.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

Claim

A packet management method for TDD cross-interference, comprising: grouping a plurality of cells by using a packet-based interference coordination technique, and performing the following steps on a plurality of cells belonging to the same group:

A) in the multiple cells of the same group, if the interference value between any two cells is greater than or equal to the preset interference threshold, an interference relationship is established between the two cells, and the same group is established. All interference relationships between other multiple cells constitute a corresponding interference relationship chain;

B) dividing a plurality of cells corresponding to each of the interference relationship chains into the same group, and independently forming groups having no interference relationship with the remaining cells;

C) The cells in each group adopt the same TDD uplink and downlink subframe configuration parameters, and use the same or different TDD uplink and downlink subframe proportion configuration parameters between different groups.

The packet management method according to claim 1, wherein if the number of cells in any group is greater than a preset number, the group management method further includes:

Determining, according to the corresponding interference relationship chain, the degree of interference of each cell in the any group to other cells, and using the cell with the greatest degree of interference to other cells as the interference isolation cell; controlling the interference isolation cell to The remaining cells in any group are isolated to divide the remaining cells into multiple sub-packets, and the same or different TDD uplink and downlink subframe proportion configuration parameters are used between the multiple sub-packets.

The packet management method according to claim 2, wherein the one or more of the cells that have the greatest degree of interference to other cells as the interference isolation cell specifically include:

Obtaining an interference relationship existing between each cell in the any group and other cells; and using the cell with the largest number of interference relationships as the cell with the greatest interference degree to other cells.

The method of group management according to claim 3, further comprising: determining, when the number of cells having the largest number of interference relationships is plural, determining each of the cells and the any group a statistical value of the interference value between other cells in the medium;

The cell with the largest corresponding statistical value is used as the cell with the greatest degree of interference to other cells.

The packet management method according to any one of claims 1 to 4, characterized in that the process of calculating the interference value between any two cells comprises:

Calculating a path loss between the two cells and converting to the interference value; wherein the value of the path loss is negatively correlated with the interference value.

A packet management system for TDD cross-interference, comprising: a packet processing unit, configured to group multiple cells by using a packet-based interference coordination technology;

a relationship chain establishing unit, configured to establish, in a plurality of cells belonging to the same group, an interference relationship between any two cells if the interference value between any two cells is greater than or equal to a preset interference threshold, and All interference relationships between multiple cells in the same group constitute a corresponding interference relationship chain;

a parameter configuration unit, configured to divide a plurality of cells corresponding to each of the interference relationship chains into the same group, and independently form a group with no interference relationship with the remaining cells, and make the cells in each group adopt the same TDD The uplink and downlink subframe configuration parameters are used, and the same or different TDD uplink and downlink subframe proportion configuration parameters are used between different groups.

The packet management system according to claim 6, further comprising: a cell selection unit, configured to determine, according to a corresponding interference relationship chain, that the number of cells in any group is greater than a preset number The interference level of each cell in any group to other cells, and the cell with the greatest degree of interference to other cells is used as an interference isolation cell; the data interaction unit is configured to send isolation control signaling to the interference isolation cell, Controlling the interference isolation cell to isolate the remaining cells in the any group to divide the remaining cells into multiple sub-packets, and adopting the same or different TDD uplink and downlink between the multiple sub-packets Subframe ratio configuration parameters.

The packet management system according to claim 7, wherein the cell selection unit comprises:

a relationship obtaining subunit, configured to acquire an interference relationship between each cell in the any group and other cells;

The selection processing unit is configured to use the cell with the largest number of interference relationships as the cell with the greatest degree of interference to other cells.

The packet management system according to claim 8, wherein the cell selection unit further comprises:

a statistical value determining subunit, configured to determine an interference value between each of the cells and the other cells in the any one of the groups in the case that the number of the cells having the largest number of interference relationships is multiple Statistics;

The selection processing sub-unit is configured to use a cell with the largest corresponding statistical value as the cell with the greatest degree of interference to other cells.

The group management system according to any one of claims 6 to 9, further comprising:

The interference calculation unit is configured to calculate a path loss between any two cells and convert the interference to the interference value, wherein the value of the path loss is negatively correlated with the interference value.

A base station, comprising the packet management system of the TDD cross-drying according to any one of claims 6 to 10;

The base station is a macro base station corresponding to multiple cells grouped by using a packet-based interference coordination technology, or a specific dynamically configured base station.