WO2016090821A1

WO2016090821A1 - Method and base station for user scheduling in pattern on/off mode, and storage medium

Info

Publication number: WO2016090821A1
Application number: PCT/CN2015/077799
Authority: WO
Inventors: 邹伟; 刘旭
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-12-08
Filing date: 2015-04-29
Publication date: 2016-06-16
Also published as: CN105744634A

Abstract

Disclosed is a method for user scheduling in a pattern on/off mode. The method comprises: dividing users under cell base stations into groups; configuring corresponding on/off tendency factors for users of different groups that are obtained by division; and performing proportional fair scheduling on the users according to the on/off tendency factors. Also disclosed are a base station for user scheduling in a pattern on/off mode, and a computer storage medium.

Description

User scheduling method, base station and storage medium in pattern switching mode

Technical field

The present invention relates to the field of communications technologies, and in particular, to a user scheduling method in a pattern switching mode, a base station, and a computer storage medium.

Background technique

With the rapid development of mobile Internet, Internet of Things, and other business applications, it has also promoted the development of the fifth generation of mobile communication technology (5G), especially the development of 5G with comparable fiber access rate and connection capacity of 100 billion devices. Perfect real-time experience and wireless broadband access anytime, anywhere.

In the future of mobile networks, the demand for business will continue to increase, and the number and variety of terminals will continue to grow exponentially. As one of the important scenarios and technical means of 5G, the Ultra Dense Network (UDN) is receiving more and more attention. When the existing Advanced Long Term Evolution (LTE-A) technology is applied to an ultra-dense network, the interference between the common reference signals (CRS) of each cell base station increases with the number of cell base stations. The more serious it is. In order to avoid this interference, the coordination switch between the cell base stations is often required in the ultra-dense network, that is, the partial cell base station is turned off to reduce interference at a certain time, and the other part of the cell base station is turned off at another time. In order to coordinate and reduce the interference of the base stations of each cell, an ideal backhaul link can be used to exchange service traffic information in real time, and centralized control of each cell switch is performed according to the service flow information. However, the ideal backhaul link greatly increases the deployment cost of the backhaul network. In actual network deployment, it is difficult to achieve ideal backhaul in all coverage scenarios. In order to coordinate the interference between the base stations of each cell in the case that the backhaul link is not ideal, the interference coordination mode of the cell switch according to the pattern is often adopted, which is referred to as a pattern switching mode, that is, each cell base station performs the cell base station signal according to a certain pattern. Switching, thereby reducing interference between base stations in each cell.

Although the pattern switching mode can effectively perform interference coordination in the case where the backhaul link is not ideal, in the prior art, it is impossible to perform fair and efficient scheduling for each end user in the pattern switching mode.

The above content is only used to assist in understanding the technical solutions of the present invention, and does not constitute an admission that the above is prior art.

Summary of the invention

In order to solve the existing technical problems, the embodiments of the present invention provide a user scheduling method in a pattern switching mode, a base station, and a computer storage medium, which are intended to perform fair and efficient scheduling for each terminal user in the pattern switching mode.

A user scheduling method in a pattern switching mode is provided by the embodiment of the present invention, where the method includes:

Grouping users under the cell base station;

Configuring a corresponding switch tendency factor for different groups of users after grouping;

The user is proportionally and fairly scheduled based on the switching tendency factor.

In the above solution, the grouping the users under the cell base station includes:

The users are grouped according to the received power of the reference signal or the location information of the user in the switching pattern period of the base station and each neighboring cell base station where the user is located.

In the foregoing solution, the grouping the users according to the received power of the reference signal or the location information of the user in the switching pattern period of the base station and each neighboring cell base station where the user is located, and the method further includes:

Obtaining the received power of the reference signal in the switching pattern period of the base station of the cell where the user is located and the neighboring cell base station;

Comparing the received power of the base station of the cell with the received power of the first neighboring cell base station and the second neighboring cell base station, where the first neighboring cell base station and the second neighboring cell base station are adjacent to the cell base station The first two cell base stations in the cell base station sorted by the received power from large to small;

Users are divided into center groups, corner groups, or edge groups based on the comparison results.

In the foregoing solution, the dividing the user into a central group, a corner group, or an edge group according to the comparison result includes:

If the received power of the base station of the cell is greater than the received power of the first neighboring cell, and the difference between the received power of the base station and the received power of the first neighboring cell is greater than a preset first threshold, the user is divided. To the central group;

If the received power of the base station of the cell is smaller than the received power of the first neighboring cell, and the difference between the received power of the first neighboring cell and the received power of the second neighboring cell is greater than a preset second threshold, Divide users into edge groups;

If the received power of the base station of the cell is smaller than the received power of the first neighboring cell, and the difference between the received power of the first neighboring cell and the received power of the second neighboring cell is less than a preset second threshold, Divide users into corner groups.

In the foregoing solution, the step of dividing the user into a central group, a corner group, or an edge group according to the comparison result further includes:

And obtaining an identifier of the first neighboring cell base station and the second neighboring cell base station, and dividing the user into an edge group and a corner group corresponding to the corresponding identifier.

Obtaining location information of the user in the base station of the cell;

The user is divided into a plurality of packets divided by location information in the base station of the own cell according to the location information of the user.

In the foregoing solution, the step of configuring a corresponding switch propensity factor for different groups of users after the grouping includes:

According to the switch pattern of the base station and the neighboring cell base station where the user is located, the user is located The grouped service load of the group configures a switching tendency factor corresponding to the unit time period of each switch pattern for different groups of users.

In the above solution, the proportional fair scheduling of the user based on the switching tendency factor includes:

Calculating the weight of the user according to the instantaneous rate of the user and the average rate of the user within the preset time, and the switching tendency factor of the group of the user in the unit time period of the switch pattern;

The weights of all users are compared, and the user with the largest weight is selected for scheduling in the unit time period of the switch pattern.

The embodiment of the present invention further provides a base station for scheduling users in a pattern switch mode, where the base station includes:

a grouping module configured to group users under the cell base station;

a configuration module configured to configure a corresponding switch tendency factor for different groups of users after the grouping;

The scheduling module is configured to perform proportional fair scheduling on the user based on the switch propensity factor.

Preferably, the grouping module is further configured to:

In the above solution, the grouping module is further configured to:

If the receiving power of the base station of the cell is greater than the receiving power of the base station of the first neighboring cell, and the small The difference between the received power of the regional base station and the received power of the first neighboring cell base station is greater than a preset first threshold, and the user is divided into a central group;

In the above solution, the grouping module is further configured to:

Obtaining location information of the user in the base station of the cell;

In the above solution, the configuration module is further configured to:

The switch tendency factor corresponding to the unit time period of each switch pattern is configured for different groups of users according to the switch pattern of the base station of the cell and the neighboring cell base station where the user is located, and the group service load of the group where the user is located.

In the above solution, the scheduling module is further configured to:

An embodiment of the present invention further provides a computer storage medium, where the computer storage medium Computer executable instructions are stored for performing the user scheduling method in the aforementioned pattern switching mode.

A user scheduling method, a base station, and a computer storage medium in a pattern switching mode according to an embodiment of the present invention first group all users under a cell base station, and configure different group users in a cell base station in a pattern switching mode. The switching tendency factor corresponding to the unit time period of different switch patterns, so that in the scheduling of the cell base station to the user, the cell base station can perform scheduling by referring to the switching tendency factors of different group users when performing proportional fair scheduling on the user, for different groups. The user provides a propensity scheduling optimization strategy to fully utilize the interference coordination gain brought by the pattern switch to improve the system capacity under the premise of ensuring fairness.

DRAWINGS

1 is a schematic diagram of a switch pattern of a base station of each cell in a pattern switch mode according to an embodiment of the present invention;

2 is a schematic flow chart of an embodiment of a user scheduling method in a pattern switching mode according to the present invention;

FIG. 3 is a schematic diagram of grouping users according to an embodiment of the present invention;

4 is a schematic diagram of functional blocks of an embodiment of a base station for scheduling users in a pattern switching mode according to the present invention.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

Detailed ways

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in FIG. 1, FIG. 1 is a schematic diagram of a switch pattern of a base station of each cell in a pattern switching mode according to an embodiment of the present invention.

In the pattern switching mode, each cell base station such as the

cell base stations

1, 2, 3, 4 press their respective switches The pattern is used to perform interference coordination of the cell base station switch, that is, each cell base station performs switching of the cell base station according to a certain pattern, thereby reducing interference between base stations of each cell. The switch patterns of different cell base stations are different, but they are synchronous in time and are composed of multiple unit time segments. The specific switch pattern may be uniformly allocated by the central node, or may be generated by each cell base station and its neighboring cell base station according to the detected interference condition. Each unit time period of the cell base station switch in the switch pattern may be from one 1 ms subframe to multiple 10 ms radio frames. The control duration of the entire switch pattern, that is, the switch pattern period depends on the actual length of the switch pattern, and may be preset. length. In this way, the interaction of the relevant control information between the base stations of each cell can be performed according to the actual delay condition of the backhaul link, and an aperiodic or periodic switch control pattern of a corresponding length is generated, and the unit time of the cell base station switch is performed once. The granularity is called the unit time period of the switch pattern.

Although the pattern switching mode can effectively perform interference coordination in the case where the backhaul link is not ideal, the scheduling method includes strict priority scheduling and proportional fair (PF) scheduling method, and in the priority scheduling method, only when high After the priority users are scheduled, the low-priority users can be scheduled. This obviously does not guarantee fair scheduling for users. In the proportional fair scheduling method, the weight of each user is calculated by the following formula at each scheduling time t _k , and the user with the largest weight is selected for scheduling:

Where r _i (t _k ) is the instantaneous rate of user i at time t _k ,

For the average rate of user i over a longer period of time, M _i (t _k ) is the weight of user i at time t _k . In the proportional fair scheduling method, users are scheduled when their respective instantaneous rates (or signal to interference and noise ratios) are close to the peak, which fully increases the system capacity. At the same time, the scheduling method avoids the user's long time due to poor channel quality. Not being served, guaranteeing a certain degree of fairness.

However, the above-mentioned proportional fair scheduling method cannot be directly used in the pattern switching mode. This is because users at different locations of the same cell base station may have different switching states during the unit time period of each switch pattern, resulting in a large difference in instantaneous rates. Therefore, different combinations of the switching patterns of the base station and the neighboring cell base station where the user is located may require different scheduling preferences for users in different locations in the base station of the cell in different switching patterns. For example, for some unit time periods of a switch pattern in which the base station of the own cell is turned on but the base station of a neighboring cell is turned off, the edge users close to the neighboring cell base station should be preferentially scheduled; and when the two cell base stations are all turned on, This user should try to avoid being scheduled. For the central user of the base station of the cell, it can be scheduled in the time period when all other neighboring cell base stations are turned on, or can be scheduled when some neighboring cell base stations are turned off, but the instantaneous signal to noise ratio is different in different cases. The (SINR) or instantaneous rate is also different. In addition, due to the small number of users in the ultra-dense network, various extreme distributions are likely to occur, that is, the number of users in a certain area of the base station of the cell is large, and the number of users in other areas is extremely small or not, which requires both It can provide a certain tendency so that users in each area try to select the unit time period that interferes with the smaller switch pattern to be scheduled, and at the same time can be scheduled in other unit time periods to avoid waste of resources.

Therefore, the embodiment of the invention provides a user scheduling method in the pattern switching mode.

Referring to FIG. 2, FIG. 2 is a schematic flowchart diagram of an embodiment of a user scheduling method in a pattern switching mode according to the present invention.

In an embodiment, the user scheduling method in the pattern switching mode includes:

Step S10, grouping users under the cell base station;

Step S20, configuring a corresponding switch tendency factor for different groups of users after the grouping;

Step S30, performing proportional fair scheduling on the user based on the switch tendency factor.

In this embodiment, all the users under the cell base station are first grouped, and in the pattern switch mode, the switch tendency factors corresponding to the unit time segments of different switch patterns are configured for different group users in the cell base station, so that the cell base station pair In the scheduling of the user, the cell base station may perform scheduling according to the switching tendency factor of different group users when performing proportional fair scheduling on the user, Different grouping users provide a propensity scheduling optimization strategy, which fully utilizes the interference coordination gain brought by the pattern switch to improve the system capacity under the premise of ensuring fairness.

In an embodiment, the foregoing step S10 may include: grouping users according to the received power of the reference signal or the location information of the user in the switching pattern period of the base station and each neighboring cell base station where the user is located.

When grouping users according to the received power of the reference signal in the switching pattern period of the base station and each neighboring cell base station where the user is located, the specific:

First, in each switch pattern period, the user measures the received power of the reference signal of the base station of the own cell and the base station of each neighboring cell, and reports the measured received power of the base station base station and the reference signals of the neighboring cell base stations to The base station is configured to acquire, by the base station, the received power of the reference signal in the switching pattern period of the local cell base station and each neighboring cell base station where the user is located. Among them, the user can report once in each switch pattern cycle, or can report once in multiple switch pattern cycles.

After the base station of the cell in which the user is located obtains the received power of the reference signal in the switching pattern period of the base station and each neighboring cell base station reported by the user, the neighboring cell base stations sort the received power of the reference signal from large to small. And acquiring the first two-bit cell base stations in which the received power of each neighboring cell base station is ranked from the largest to the smallest: the first neighboring cell base station and the second neighboring cell base station.

Comparing the received power of the base station of the local cell with the received power of the first neighboring cell base station and the second neighboring cell base station, if the received power of the base station of the local cell is greater than the received power of the first neighboring cell base station, and the base station of the local cell The difference between the received power and the received power of the first neighboring cell base station is greater than a preset first threshold, which indicates that the received power of the base station of the cell is much larger than the maximum received power of the neighboring cell, indicating that the user is away from The base station of the cell is relatively close, therefore, the user is divided into a central group;

If the received power of the base station of the cell is smaller than the received power of the first neighboring cell, and the difference between the received power of the first neighboring cell and the received power of the second neighboring cell is greater than a preset second threshold, The user is far away from the base station of the cell, but the user has a relatively close The neighboring cell base station is the first neighboring cell base station, and therefore, the user is divided into edge groups;

If the received power of the base station of the cell is smaller than the received power of the first neighboring cell, and the difference between the received power of the first neighboring cell and the received power of the second neighboring cell is less than a preset second threshold, It indicates that the user is far away from the base station of the local cell, and the user has no neighboring cell base stations, so the user is divided into corner groups.

In an embodiment, the identifiers of the first neighboring cell base station and the second neighboring cell base station may be acquired, and the user is divided into an edge group and a corner group corresponding to the corresponding identifier.

As shown in FIG. 3, FIG. 3 is a schematic diagram of grouping users according to the present invention.

The base station of the local cell where the user is located is BS0, and the base stations of the neighboring cells are BS1 to BS6, respectively, and the received power of the base station of the local cell is compared with the received power of the first neighboring cell base station and the second neighboring cell base station, thereby When the grouping is performed, the identifiers of the first neighboring cell base station and the second neighboring cell base station may be acquired, so that when the user is divided into the edge group and the corner group, the first neighboring cell base station and the second neighboring node may be used. The identifier of the cell base station is used for distinguishing, as shown in FIG. 3, when the first neighboring cell base station and the second neighboring cell base station of the user are BS1 and BS2, if the received power of the local cell base station BS0 is smaller than the first neighboring cell base station The received power of the BS1, and the difference between the received power of the first neighboring cell base station BS1 and the received power of the second neighboring cell base station BS2 is greater than a preset second threshold, indicating that the user is far away from the base station BS0. However, the user has a relatively close neighboring cell base station, that is, the first neighboring cell base station BS1, and therefore, the user is divided into an edge group identified as BS1, that is, group 2 in the figure, so that the other side can be Distinguished group. When the received power of the base station BS0 of the local cell is smaller than the received power of the first neighboring cell base station BS1, and the difference between the received power of the first neighboring cell base station BS1 and the received power of the second neighboring cell base station BS2 is smaller than the preset The second threshold indicates that the user is far away from the local cell base station BS0, and the user has no neighboring cell base stations. Therefore, the user is divided into the corner group identified as (BS1, BS2), that is, the group 8 in the figure. In this way, it can be distinguished from other corner groups. Therefore, by the above method, the users under the cell base station can be accurately grouped into the groups 1 to 13 in FIG. 3, In Figure 3, group 1 is the central group of the base station BS0 of the cell, and groups 2-7 are the edge groups, corresponding to the edge users that are closer to the neighboring cell base stations BS1 to BS6; the groups 8 to 13 are the corner groups, corresponding to It is a corner user that is closer to the neighboring cell base station pair (BS1, BS2), (BS2, BS3), (BS3, BS4), (BS4, BS5), (BS5, BS6), (BS6, BS1). In this way, the users in the cell base station are divided into different groups, and the different packets also reflect the relationship between the base station of the cell and the neighboring cell base station where the user corresponding to the different location of the user is located, which is the subsequent according to the current cell where the user is located. The different combinations of the switching patterns of the base station and the neighboring cell base stations lay the foundation for different scheduling preferences of users in different locations in the base station of the cell.

In other embodiments, the user may also be grouped according to the location information of the user. Specifically, first, the location information of the user in the base station of the cell is obtained, for example, technologies such as global positioning system GPS and base station positioning may be used to acquire the user. Location information; then, according to the location information of the user, the user is divided into several packets divided by location information in the base station of the current cell, wherein some groups may be divided into different locations in the base station of the cell, such as dividing For the central group, the edge group, the corner group, etc., after obtaining the location information of the user, the user can be directly divided into several planned groups, which is simpler and faster.

In an embodiment, the step S20 may include: configuring a unit time period corresponding to each switch pattern for different groups of users according to a switch pattern of the base station and each neighboring cell base station where the user is located, and a group service load of the group where the user is located. Switching tendency factor.

After grouping users under the base station of the local cell, due to different combinations of the switch patterns of the base station and the neighboring cell base station, different groups of users have different scheduling priorities in different unit time periods of the switch pattern, therefore, The switch propensity factors corresponding to the unit time period of each switch pattern are configured for different groups of users, so as to achieve different scheduling priorities in different unit time periods. The switch tendency factor is configured according to the switch pattern of the base station of the cell and the neighboring cell base station where the user is located, and the group service load of the group where the user is located, and each group is in the switch pattern. The switching tendency factors of different unit time periods have different values. The group service load of the group where the user is located may refer to the proportion of the group users of the group in which the user is located or the proportion of the group service load. Specifically, the flow of the switch tendency factor corresponding to the unit time period of each switch pattern configured for different groups of users according to the switch pattern of the base station and each neighboring cell base station where the user is located and the group service load of the user group are as follows: :

For the users of the central group, since the base station is close to the base station, the switch tendency factors of the central group users are all set to 1.

For the user of the edge group, the switch pattern combination of the base station and the first neighboring cell base station needs to be considered. For example, for the switch pattern unit time period in which the base station of the cell is turned on but the neighboring cell base station is turned off, the switch tendency factor can be configured as:

b=1+g*(1+d-e)

Where d is the group service load of the group in which the user is located, that is, the ratio of the number of group users in the edge group where the user is located to the total number of users in the base station of the cell; e is the switch pattern unit time when the base station of the cell is turned on and the base station of the neighboring cell is turned off. The ratio of the number of segments to the total number of unit time periods opened by the base station in the switch pattern; g is a preset trend adjustment parameter, and the value range is g ≥ 0, which can be set to 0, 1, 5 or as needed. 10 equivalent, not limited here. In order to balance the propensity of each unit time period, the switch propensity factor can be configured for the switch pattern unit time period in which the base station of the cell is turned on and the neighbor cell base station is also turned on.

a=(e/b)+1-e

Where b is a switching tendency factor in a combined state in which the base station of the own cell is turned on and the neighboring cell base station is turned off.

For the user of the corner group, the following three situations need to be considered: Case 1 is that the base station of the cell is turned on, but one of the two adjacent cell base stations is turned off; Case 2 is that the base station of the cell is turned on, but two adjacent cells The cell base station is all turned off; Case 3 is that both the base station of the cell and the two base stations of the adjacent cell are turned on.

For the switch pattern unit time period in Case 2, the switch propensity factor can be configured as:

B2=1+g*(1+d-e2)*2

Wherein e2 is the ratio of the number of time periods of the switch pattern in case 2 to the total number of unit time periods opened by the base station of the cell in the switch pattern. d is the group service load of the group in which the user is located, that is, the ratio of the number of group users in the corner group where the user is located to the total number of users in the base station of the cell;

For the switch pattern unit time period in case 1, the switch propensity factor can be configured as:

B1=1+g*(1+d-e2-e1)

Wherein e1 is the ratio of the number of time periods of the switch pattern in case 1 to the total number of unit time periods opened by the base station of the cell in the switch pattern. Further, in addition to b1 being configured as described above, b1 may also be set to 1, because although b1 takes a larger value and has a certain benefit to the fair scheduling of the corner group, since the instantaneous rate of case 1 is not large, compared to the conventional In the case of proportional fair scheduling, it may reduce the total capacity.

For the switch pattern unit time period in case 3, the switch propensity factor can be configured as:

A2=(e2/b2)+(e1/b1)+1-e1-e2

Where b1 and b2 are the values calculated by the above formula.

In this way, the switching tendency factor corresponding to the unit time period of each switch pattern can be configured for the central group, the edge group, and the corner group user of the base station of the base station by using the foregoing calculation process, and the unit time of each switch pattern of the last configured edge group and corner group is configured. The switch propensity factor corresponding to the segment can be counted in a table for calling, as shown in Table 1 and Table 2 below. Since the switch tendency factors of the central group users are all set to 1, it is not shown in the table, wherein Table 1 In Table 2, '1' indicates a unit time period in which the cell base station is turned on, and '0' indicates a unit time period in which the cell base station is turned off. For the edge group shown in Table 1, only the switch pattern of the base station of the cell and the base station of the first neighboring cell is considered, and the switch pattern of the edge group is turned on in the cell pattern of the base station of the cell and the base station of the first neighboring cell. The trend factor takes a value; in the switch pattern unit time period in which the first neighboring cell base station is turned off, the switching tendency factor of the edge group takes the b value. For the unit time period in which the base station of the cell is closed, since the service cannot be provided, the scheduling is not performed at all, and the switching tendency factor is taken to be a zero value. For the corner group shown in Table 2, there are three cases: Case 1 is that the base station of the cell is turned on, but two adjacent ones. One cell base station is closed in the cell base station; Case 2 is that the cell base station is turned on, but two adjacent cell base stations are all turned off; Case 3 is that the cell base station and the adjacent two cell base stations are all turned on. For the switch pattern unit time period of case 1, the switch tendency factor of the corner group takes the b1 value; for the switch pattern unit time period of case 2, the switch tendency factor of the corner group takes the b2 value; for the switch in case 3 The pattern unit time period, the switching tendency of the corner group is due to taking the a2 value. In this way, after grouping users under the base station of the cell, it is convenient to configure the switch tendency factor corresponding to the unit time period of each switch pattern for different groups of users according to Tables 1 and 2.

Table 1

Table 2

In an embodiment, the foregoing step S30 may include: calculating a weight of the user according to an instantaneous rate of the user and an average rate of the user in the preset time, and a switching tendency factor of the group of the user in the unit time period of the switch pattern; The weights of all users are compared, and the user with the largest weight is selected for scheduling in the unit time period of the switch pattern.

Specifically, in each switch pattern unit time period, each user multiplies the user according to the instantaneous rate in the unit time period of the switch pattern and the average rate in the preset time period according to the user group in which the user is located. The group's switching tendency factor in the switch pattern unit time period is used to calculate the weight, as shown in the following formula:

Where ξ is the switching tendency factor of the user group in the switch pattern unit time period, equal to a, a2, b, b1 or b2 in Table 1, Table 2, r _i (t _k ) is user i at time The instantaneous rate of t _k ,

For the average rate of user i over a longer period of time, M _i (t _k ) is the weight of user i at time t _k . The weights of all users are compared, and the user with the largest weight is selected for scheduling within the unit time period of the switch pattern.

In this embodiment, after the users are grouped according to the received power of the reference signal or the location information of the user in the switching pattern period of the base station and each neighboring cell base station where the user is located, different unit patterns are calculated and configured for different groups of users. The switch propensity factor corresponding to the segment, and in the subsequent scheduling process, when calculating the weight in the proportional fair scheduling, multiply the switch propensity factor corresponding to the different switch pattern unit time segments of different users, and then select the user with the largest weight. Scheduling, so that the proportional fair real-time scheduling can be more effectively performed in the pattern switching mode, and the scheduling optimization strategies of users at different positions in different neighboring cell base station switching states can be taken into consideration, and the pattern switching mode can be fully utilized. Interference coordination gain. In addition, the scheduling method provided in this embodiment can provide a certain degree of preference, so that each group of users of the base station of the cell can select a scheduling time unit with less interference to perform scheduling, and can be scheduled to be scheduled in other unit time periods. Waste of resources.

The embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the user scheduling method in the pattern switching mode.

The present invention further provides a base station for scheduling users in a pattern switch mode.

Referring to FIG. 4, FIG. 4 is a schematic diagram of functional blocks of an embodiment of a base station for scheduling users in a pattern switching mode according to the present invention.

In an embodiment, the base station that schedules the user in the pattern switch mode includes:

The grouping module 01 is configured to group users under the cell base station;

The configuration module 02 is configured to configure a corresponding switch propensity factor for different groups of users after the grouping;

The scheduling module 03 is configured to perform proportional fair scheduling on the user based on the switch propensity factor.

In this embodiment, all the users under the cell base station are first grouped, and in the pattern switch mode, the switch tendency factors corresponding to the unit time segments of different switch patterns are configured for different group users in the cell base station, so that the cell base station pair In the scheduling of the user, the cell base station may perform scheduling scheduling with reference to the switching tendency factors of different group users when performing proportional fair scheduling for users, and provide a preferential scheduling optimization strategy for users of different groups, under the premise of ensuring fairness of the proportion. Make full use of the interference coordination gain brought by the pattern switch to increase the system capacity.

In an embodiment, the grouping module 01 may be configured to group users according to the received power of the reference signal or the location information of the user in the switching pattern period of the base station and each neighboring cell base station where the user is located.

Comparing the received power of the base station of the cell with the received power of the first neighboring cell base station and the second neighboring cell base station, if the received power of the base station of the local cell is greater than that of the first neighboring cell base station Receiving power, and the difference between the received power of the base station of the cell and the received power of the first neighboring cell base station is greater than a preset first threshold, indicating that the received power of the base station of the cell is much larger than the maximum receiving of the neighboring cell. The power indicates that the user is closer to the base station of the cell, and therefore, the user is divided into the central group;

If the received power of the base station of the cell is smaller than the received power of the first neighboring cell, and the difference between the received power of the first neighboring cell and the received power of the second neighboring cell is greater than a preset second threshold, It is indicated that the user is far away from the base station of the local cell, but the user has a relatively close neighboring cell base station, that is, the first neighboring cell base station, and therefore, the user is divided into edge groups;

In an embodiment, the configuration module 02 may be configured to: configure a unit of each switch pattern according to a switch pattern of the base station and each neighboring cell base station where the user is located, and a group service load of the group where the user is located. The switching tendency factor corresponding to the time period.

After grouping users under the base station of the local cell, due to different combinations of the switch patterns of the base station and the neighboring cell base station, different groups of users have different scheduling priorities in different unit time periods of the switch pattern, therefore, The switch propensity factors corresponding to the unit time period of each switch pattern are configured for different groups of users, so as to achieve different scheduling priorities in different unit time periods. The switch propensity factor is configured according to the switch pattern of the base station of the cell and the neighboring cell base station where the user is located, and the group service load of the group where the user is located, and the switch tendency factor of each group in different unit time periods of the switch pattern is Different values. The group service load of the group where the user is located may refer to the proportion of the group users of the group in which the user is located or the proportion of the group service load. Specifically, the flow of the switch tendency factor corresponding to the unit time period of each switch pattern configured for different groups of users according to the switch pattern of the base station and each neighboring cell base station where the user is located and the group service load of the user group are as follows: :

b=1+g*(1+d-e)

a=(e/b)+1-e

Where b is the open state in the combined state in which the base station of the local cell is turned on and the neighboring cell base station is turned off. The tendency factor.

B2=1+g*(1+d-e2)*2

B1=1+g*(1+d-e2-e1)

A2=(e2/b2)+(e1/b1)+1-e1-e2

Where b1 and b2 are the values calculated by the above formula.

In an embodiment, the scheduling module 03 may be configured to: calculate the user according to the instantaneous rate of the user and the average rate of the user in the preset time, and the switching tendency factor of the group of the user in the switch pattern. Weight; compares the weights of all users, and selects the user with the largest weight in the unit time period of the switch pattern for scheduling.

Specifically, in each switch pattern unit time period, each user according to the switch diagram The instantaneous rate in the unit time period and the average rate in the preset time, and the weight is calculated according to the user group in which the user is located multiplied by the switching tendency factor of the user group in the switch pattern unit time period, as the following formula :

Where ξ is the switching tendency factor of the user group in the switching pattern unit time period, and r _i (t _k ) is the instantaneous rate of the user i at the time t _k ,

In practical applications, the grouping module 01, the configuration module 02, and the scheduling module 03 may each be a central processing unit (CPU), or a digital signal processing (DSP), or a microprocessor (MPU, The Micro Processor Unit) or a Field Programmable Gate Array (FPGA) is implemented; the CPU, the DSP, the MPU, and the FPGA may be built in the base station.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments. By The description of the above embodiments, those skilled in the art can clearly understand that the above embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases the former is better. Implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Industrial applicability

In the embodiment of the present invention, all the users under the cell base station are first grouped, and in the pattern switch mode, the switch tendency factors corresponding to the unit time segments of different switch patterns are configured for different group users in the cell base station, so that In the scheduling of the cell base station to the user, the cell base station may perform scheduling scheduling with reference to the switching tendency factors of different group users when performing proportional fair scheduling for the user, and provide a preferential scheduling optimization strategy for users of different groupings, Under the premise, make full use of the interference coordination gain brought by the pattern switch to increase the system capacity.

Claims

A user scheduling method in a pattern switching mode, the method comprising:

Grouping users under the cell base station;

Configuring a corresponding switch tendency factor for different groups of users after grouping;

The user is proportionally and fairly scheduled based on the switching tendency factor.
The user scheduling method in the pattern switching mode according to claim 1, wherein the grouping the users under the cell base station comprises:

The users are grouped according to the received power of the reference signal or the location information of the user in the switching pattern period of the base station and each neighboring cell base station where the user is located.
The user scheduling method in the pattern switching mode according to claim 2, wherein the user is based on the received power of the reference signal or the location information of the user in the switching pattern period according to the local cell base station and each neighboring cell base station where the user is located Grouping, also includes:

Obtaining the received power of the reference signal in the switching pattern period of the base station of the cell where the user is located and the neighboring cell base station;

Comparing the received power of the base station of the cell with the received power of the first neighboring cell base station and the second neighboring cell base station, where the first neighboring cell base station and the second neighboring cell base station are adjacent to the cell base station The first two cell base stations in the cell base station sorted by the received power from large to small;

Users are divided into center groups, corner groups, or edge groups based on the comparison results.
The user scheduling method in the pattern switching mode according to claim 3, wherein the dividing the user into a central group, a corner group or an edge group according to the comparison result comprises:

If the received power of the base station of the cell is greater than the received power of the first neighboring cell, and the difference between the received power of the base station and the received power of the first neighboring cell is greater than a preset first threshold, the user is divided. To the central group;

If the received power of the base station of the local cell is smaller than the received power of the first neighboring cell base station, and the difference between the received power of the first neighboring cell base station and the received power of the second neighboring cell base station is greater than a preset The second threshold, the user is divided into edge groups;

If the received power of the base station of the cell is smaller than the received power of the first neighboring cell, and the difference between the received power of the first neighboring cell and the received power of the second neighboring cell is less than a preset second threshold, Divide users into corner groups.
The user scheduling method in the pattern switching mode according to claim 4, wherein the dividing the user into a center group, a corner group or an edge group according to the comparison result further includes:

And obtaining an identifier of the first neighboring cell base station and the second neighboring cell base station, and dividing the user into an edge group and a corner group corresponding to the corresponding identifier.
The user scheduling method in the pattern switching mode according to claim 2, wherein the user is based on the received power of the reference signal or the location information of the user in the switching pattern period according to the local cell base station and each neighboring cell base station where the user is located Grouping, also includes:

Obtaining location information of the user in the base station of the cell;

The user is divided into a plurality of packets divided by location information in the base station of the own cell according to the location information of the user.
The user scheduling method in the pattern switching mode according to claim 1, wherein the configuring the corresponding switching tendency factors for the different groups of users after the grouping comprises:

The switch tendency factor corresponding to the unit time period of each switch pattern is configured for different groups of users according to the switch pattern of the base station of the cell and the neighboring cell base station where the user is located, and the group service load of the group where the user is located.
The user scheduling method in the pattern switching mode according to claim 1, wherein the proportional fair scheduling of the user based on the switching tendency factor comprises:

Calculating the weight of the user according to the instantaneous rate of the user and the average rate of the user within the preset time, and the switching tendency factor of the group of the user in the unit time period of the switch pattern;

The weights of all users are compared, and the user with the largest weight is selected for scheduling in the unit time period of the switch pattern.
A base station for scheduling a user in a pattern switch mode, the base station comprising:

a grouping module configured to group users under the cell base station;

a configuration module configured to configure a corresponding switch tendency factor for different groups of users after the grouping;

The scheduling module is configured to perform proportional fair scheduling on the user based on the switch propensity factor.
The base station according to claim 9, wherein the grouping module is further configured to:

The users are grouped according to the received power of the reference signal or the location information of the user in the switching pattern period of the base station and each neighboring cell base station where the user is located.
The base station according to claim 10, wherein the grouping module is further configured to:

Obtaining the received power of the reference signal in the switching pattern period of the base station of the cell where the user is located and the neighboring cell base station;

Comparing the received power of the base station of the cell with the received power of the first neighboring cell base station and the second neighboring cell base station, where the first neighboring cell base station and the second neighboring cell base station are adjacent to the cell base station The first two cell base stations in the cell base station sorted by the received power from large to small;

Users are divided into center groups, corner groups, or edge groups based on the comparison results.
The base station according to claim 11, wherein the grouping module is further configured to:

If the received power of the base station of the cell is greater than the received power of the first neighboring cell, and the difference between the received power of the base station and the received power of the first neighboring cell is greater than a preset first threshold, the user is divided. To the central group;

If the received power of the base station of the cell is smaller than the received power of the first neighboring cell, and the difference between the received power of the first neighboring cell and the received power of the second neighboring cell is greater than a preset second threshold, Divide users into edge groups;

If the received power of the base station of the cell is smaller than the received power of the first neighboring cell, and the difference between the received power of the first neighboring cell and the received power of the second neighboring cell is less than a preset second threshold, Divide users into corner groups.
The base station according to claim 12, wherein the grouping module is further configured to:

And obtaining an identifier of the first neighboring cell base station and the second neighboring cell base station, and dividing the user into an edge group and a corner group corresponding to the corresponding identifier.
The base station according to claim 10, wherein the grouping module is further configured to:

Obtaining location information of the user in the base station of the cell;

The user is divided into a plurality of packets divided by location information in the base station of the own cell according to the location information of the user.
The base station according to claim 9, wherein the configuration module is further configured to:

The switch tendency factor corresponding to the unit time period of each switch pattern is configured for different groups of users according to the switch pattern of the base station of the cell and the neighboring cell base station where the user is located, and the group service load of the group where the user is located.
The base station according to claim 9, wherein the scheduling module is further configured to:

Calculating the weight of the user according to the instantaneous rate of the user and the average rate of the user within the preset time, and the switching tendency factor of the group of the user in the unit time period of the switch pattern;

The weights of all users are compared, and the user with the largest weight is selected for scheduling in the unit time period of the switch pattern.
A computer storage medium having stored therein computer executable instructions for performing the method of any one of claims 1 to 8.