CN103857051B - A kind of dispatching method of user equipment ascending resource and base station - Google Patents

Abstract

The embodiment of the present invention discloses a method for scheduling user equipment uplink resources and a base station. For UEs with different levels of interference, the first base station performs scheduling on a specific time-frequency resource, and the second base station performs scheduling on the specific time-frequency resource. The interference level of the base station is determined; furthermore, when the second base station schedules the user equipment on the corresponding time-frequency resource, it can more accurately determine the link adaptation parameter and the power control parameter. The method includes: the first base station determines an interference level among a plurality of interference levels; and based on the corresponding relationship between a plurality of interference levels and a plurality of time-frequency resources, selects a a time-frequency resource corresponding to one level of interference; then, the first base station schedules the user equipment on the time-frequency resource corresponding to the one interference level. The invention is applicable to the communication field.

Description

A user equipment uplink resource scheduling method and base station

technical field

The present invention relates to the communication field, in particular to a method for scheduling user equipment uplink resources and a base station.

Background technique

In the heterogeneous network architecture, in order to increase the communication quality in key areas, several micro base stations are distributed under the macro base station. The coverage area of the micro base station is smaller than that of the macro base station and overlaps with the coverage area of the macro base station. When a micro base station serves user equipment UE (User Equipment), once any neighboring base station schedules a UE within the coverage of the base station, it will cause interference to the micro base station to varying degrees.

Since the UEs of adjacent base stations will interfere with the base station, in the existing link adaptive technology, at a certain moment, the base station decides to schedule a certain UE, and the base station will estimate the interference of the adjacent base stations to the base station, specifically, The base station obtains the interference level and noise level measured at this moment, and also measures the channel matrix from the UE to the base station, and then selects the transmission layer index RI (Rank Indication) and precoding index PMI (Precoding Matrix Indication) suitable for the current link. And channel quality indicator CQI (Channel Quality Indication). Among them, the channel matrix is related to the mobile speed of the user. For UEs moving at a low speed, the difference in a few milliseconds can be ignored; the noise level is mainly caused by devices and is relatively stable for a period of time. The difference in interference level is mainly caused by UEs scheduled by neighboring base stations on the same time-frequency resource. However, often, there is a time difference between the time when the base station actually schedules the UE and the time when the UE actually sends data, and the time difference is generally several milliseconds. In this way, when the UE actually sends data, the interference of the adjacent base station to the base station may have changed, so the link quality at the actual scheduling time and the measurement time may be quite different, and then determine the parameters of the UE's link adaptation have a big impact.

Furthermore, since the interference of adjacent base stations to the base station may have changed when the base station actually schedules the UE, the determination of the target power value of the power control parameter and the downlink path loss compensation parameter in the UE transmit power calculation formula is inaccurate, so The base station cannot determine a power value more suitable for the actual scheduling time.

Contents of the invention

Embodiments of the present invention provide a method for scheduling user equipment uplink resources and a base station. For UEs with different interference levels, the first base station performs scheduling on a specific time-frequency resource, and then the second base station performs scheduling on the specific time-frequency resource. The interference level of the base station is determined; furthermore, when the second base station schedules the user equipment on the corresponding time-frequency resource, it can more accurately determine the link adaptation parameter and the power control parameter.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In a first aspect, a method for scheduling uplink resources of a user equipment is provided, and the method includes:

The first base station determines an interference level among multiple interference levels, wherein the multiple interference levels respectively represent multiple levels of interference to the second base station when the user equipment sends an uplink signal to the first base station;

Based on the correspondence between multiple interference levels and multiple time-frequency resources, the first base station selects a time-frequency resource corresponding to the one interference level for the user equipment among the multiple time-frequency resources, where the multiple time-frequency resources are mutually There is no overlap;

The first base station schedules the user equipment on the time-frequency resource corresponding to the one interference level.

In a first possible implementation manner, according to the first aspect, determining an interference level among multiple interference levels by the first base station includes:

The first base station receives the received signal quality from the second base station to the user equipment reported by the user equipment, and determines the one interference level among multiple interference levels according to the received signal quality.

In a second possible implementation manner, according to the first aspect, determining an interference level among multiple interference levels by the first base station includes:

The first base station receives the one interference level sent by the second base station, and the one interference level is determined by the second base station from multiple interference levels according to the measurement reference signal of the user equipment measured by the second base station.

In a third possible implementation manner, in combination with the first aspect or the first possible implementation manner or the second possible implementation manner, before the first base station determines an interference level among multiple interference levels, the method further includes:

The first base station determines the correspondence between multiple interference levels and multiple time-frequency resources;

The first base station sends the correspondence between the multiple interference levels and the multiple time-frequency resources to the second base station.

In a second aspect, a method for scheduling uplink resources of a user equipment is provided, and the method includes:

The second base station determines an interference level among multiple interference levels, and the multiple interference levels respectively represent multiple levels of interference to the second base station when other user equipments send uplink signals to the first base station;

Based on the correspondence between multiple interference levels and multiple time-frequency resources, the second base station selects a time-frequency resource corresponding to the one interference level for the user equipment among the multiple time-frequency resources, where the multiple time-frequency resources are mutually There is no overlap;

When the second base station schedules the user equipment on the time-frequency resource corresponding to the one interference level, the second base station selects link adaptation parameters and uplink power corresponding to the one interference level for the user equipment control parameter.

In a first possible implementation manner, according to the second aspect, determining an interference level among multiple interference levels by the second base station includes:

The second base station receives the received signal quality from the second base station to the user equipment reported by the user equipment, and determines the one interference level among multiple interference levels according to the received signal quality; or

The second base station determines the one interference level from multiple interference levels according to a measurement reference signal that the second base station measures the user equipment.

In a second possible implementation manner, according to the second aspect, determining an interference level among multiple interference levels by the second base station includes:

The second base station receives from the first base station the one interference level determined by the first base station from the plurality of interference levels.

In a third possible implementation manner, in combination with the second aspect or the first possible implementation manner or the second possible implementation manner, before the second base station determines an interference level among multiple interference levels, the method further includes:

The second base station receives correspondences between the multiple interference levels and multiple time-frequency resources from the first base station.

In a third aspect, a first base station is provided, and the first base station includes: a determination unit, a selection unit, and a scheduling unit;

The determining unit is configured to determine an interference level among a plurality of interference levels, wherein the plurality of interference levels respectively represent a plurality of interference degrees of the user equipment to the second base station when sending an uplink signal to the first base station;

The selection unit is configured to, based on the correspondence between multiple interference levels and multiple time-frequency resources, select a time-frequency resource corresponding to the one interference level for the user equipment among the multiple time-frequency resources, wherein the multiple Time-frequency resources do not overlap with each other;

The scheduling unit is configured to schedule the user equipment on the time-frequency resource corresponding to the one interference level.

In the first possible implementation, according to the third aspect,

The determining unit is specifically configured to receive the received signal quality from the second base station to the user equipment reported by the user equipment, and determine the one interference level among multiple interference levels according to the received signal quality.

In the second possible implementation, according to the third aspect,

The determining unit is specifically configured to receive the one interference level sent by the second base station, the one interference level is obtained by the second base station from multiple interference levels according to the measurement reference signal of the user equipment measured by the second base station determined in.

In the third possible implementation, combined with the third aspect or the first possible implementation or the second possible implementation,

The determining unit is further configured to determine correspondence between multiple interference levels and multiple time-frequency resources;

The first base station further includes: a sending unit;

The sending unit is configured to send correspondences between the multiple interference levels and multiple time-frequency resources to the second base station.

In a fourth aspect, a first base station is provided, and the second base station includes: a determination unit, a selection unit, and a scheduling unit;

The determining unit is configured to determine an interference level among a plurality of interference levels, and the plurality of interference levels respectively represent a plurality of interference degrees of other user equipments to the second base station when sending uplink signals to the first base station;

The selection unit is configured to, based on the correspondence between multiple interference levels and multiple time-frequency resources, select a time-frequency resource corresponding to the one interference level for the user equipment among the multiple time-frequency resources, wherein the multiple Time-frequency resources do not overlap with each other;

The scheduling unit is configured to select, for the user equipment, link adaptive parameters and uplink power corresponding to the one interference level when scheduling the user equipment on the time-frequency resource corresponding to the one interference level control parameter.

In the first possible implementation, according to the fourth aspect,

The determining unit is specifically configured to receive the received signal quality from the second base station to the user equipment reported by the user equipment, and determine the one interference level among multiple interference levels according to the received signal quality; or

The determining unit is specifically configured to determine the one interference level from a plurality of interference levels according to the measurement reference signal of the user equipment measured by the second base station.

In the second possible implementation, according to the fourth aspect,

The determining unit is specifically configured to receive from the first base station the one interference level determined by the first base station from multiple interference levels.

In the third possible implementation, combined with the fourth aspect or the first possible implementation or the second possible implementation,

The second base station further includes a receiving unit;

The receiving unit is configured to receive correspondences between the multiple interference levels and multiple time-frequency resources from the first base station.

Embodiments of the present invention provide a method for scheduling user equipment uplink resources and a base station. The first base station determines an interference level among multiple interference levels; Selecting a time-frequency resource corresponding to the one interference level from the time-frequency resources for the user equipment; then, the first base station schedules the user equipment on the time-frequency resource corresponding to the one interference level. For UEs with different interference levels, if the first base station performs scheduling on a specific time-frequency resource, then the interference level to the second base station on the specific time-frequency resource is determined; furthermore, the second base station at the corresponding time When scheduling user equipment on frequency resources, link adaptation parameters and power control parameters can be determined more accurately.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic flowchart of a method for scheduling uplink resources of a user equipment provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of interference between base stations in a heterogeneous network according to an embodiment of the present invention;

FIG. 3 is a schematic flowchart of another method for scheduling uplink resources of a user equipment provided by an embodiment of the present invention;

FIG. 4 is a schematic diagram of a heterogeneous network scenario provided by an embodiment of the present invention;

FIG. 5 is an interactive schematic diagram of a method for scheduling user equipment uplink resources provided by an embodiment of the present invention;

FIG. 6 is a schematic diagram of a corresponding relationship between multiple interference levels and multiple time-frequency resources provided by an embodiment of the present invention;

FIG. 7 is a schematic diagram of another correspondence relationship between multiple interference levels and multiple time-frequency resources provided by an embodiment of the present invention;

FIG. 8 is a schematic diagram of another correspondence relationship between multiple interference levels and multiple time-frequency resources provided by an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a first base station provided by an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of another first base station provided by an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a second base station provided by an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of another second base station provided by an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of another first base station provided by an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of another second base station provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment one,

An embodiment of the present invention provides a method for scheduling uplink resources of a user equipment. The execution subject of the method is the first base station. As shown in FIG. 1 , the method includes:

101. The first base station determines an interference level among multiple interference levels, where the multiple interference levels respectively represent multiple levels of interference to the second base station when the user equipment sends an uplink signal to the first base station.

When the second base station schedules the user equipment, if the first base station schedules the user equipment on the same time-frequency resource, the user equipment scheduled by the first base station will cause different degrees of interference to the user equipment scheduled by the second base station. The multiple interference levels may specifically be: a strong interference level, a medium interference level, and a weak interference level. Specifically, the strong interference level refers to an interference level whose interference level value is greater than -80dBm, and the medium interference level refers to an interference level value An interference level in the interval [-120dBm, -80dBm], the weak interference level refers to an interference level whose interference level value is less than -120dBm.

The multiple interference levels correspond to multiple interference degrees. Of course, the multiple interference levels may also be divided into finer interference levels. For example, the multiple interference levels may specifically be: super strong interference level, strong interference level, medium interference level, and weak interference level.

In the embodiment of the present invention, the multiple interference levels are divided into strong interference level, medium interference level and weak interference level as an example. FIG. 2 is a schematic diagram of interference between base stations in a heterogeneous network. For the second base station B in FIG. 2, user equipment 2 is scheduled on a certain time-frequency resource. On the same time-frequency resource, the first base station schedules different user equipment 1, 3, 4, and 5, and the second base station schedules user equipment 2. Device 2 causes interference to varying degrees. Wherein, the degree of interference caused by user equipment 1 and 5 is a strong interference level, the degree of interference caused by user equipment 3 is a medium interference level, and the degree of interference caused by user equipment 4 is a weak interference level.

When user equipment sends an uplink signal to the first base station, the first base station determines an interference level among multiple interference levels according to the interference level of the user equipment, for example, when user equipment 1 sends an uplink signal to the first base station When , one interference level determined by the first base station among the multiple interference levels is a strong interference level.

102. Based on the correspondence between multiple interference levels and multiple time-frequency resources, the first base station selects a time-frequency resource corresponding to the one interference level for the user equipment from multiple time-frequency resources, where the multiple time-frequency resources Resources do not overlap with each other.

The corresponding relationship between the multiple interference levels and the multiple time-frequency resources specifically represents a relationship on which time-frequency resources user equipments with different interference levels can be scheduled. The time-frequency resources may be subframe resources or subband resources.

Specifically, take the correspondence between multiple interference levels and multiple subframe resources as an example, where the multiple subframe resources do not overlap each other.

For example, the corresponding relationship between multiple interference levels and multiple subframe resources can be as follows: 3 subframes are used as a period; for each period, users with different interference levels are assigned in the order of strong interference level, medium interference level and weak interference level The device allocates subframe resources. It can be obtained that the user equipment at the strong interference level may be scheduled on subframe resources with subframe numbers 0, 3, 6, 9, ..., n, n+3, ....

The first base station selects, for the user equipment, a time-frequency resource corresponding to the one interference level among the multiple time-frequency resources based on the correspondence between multiple interference levels and multiple time-frequency resources. For example, when the one interference level is a strong interference level, the first base station may select a time-frequency resource corresponding to the strong interference level.

103. The first base station schedules the user equipment on the time-frequency resource corresponding to the one interference level.

After the first base station selects the time-frequency resource corresponding to the one interference level for the user equipment among the multiple time-frequency resources based on the correspondence between multiple interference levels and multiple time-frequency resources, the first base station Scheduling the user equipment on the time-frequency resource corresponding to the one interference level.

An embodiment of the present invention provides a method for scheduling user equipment uplink resources. The execution subject of the method is the second base station. As shown in FIG. 3 , the method includes:

301. The second base station determines an interference level among multiple interference levels, where the multiple interference levels respectively represent multiple levels of interference to the second base station when other user equipments send uplink signals to the first base station.

When the second base station schedules the user equipment, if the first base station schedules the user equipment on the same time-frequency resource, the user equipment scheduled by the first base station will cause different degrees of interference to the user equipment scheduled by the second base station. The multiple interference levels may specifically be: a strong interference level, a medium interference level, and a weak interference level. Specifically, the strong interference level refers to an interference level whose interference level value is greater than -80dBm, and the medium interference level refers to an interference level value An interference level in the interval [-120dBm, -80dBm], the weak interference level refers to an interference level whose interference level value is less than -120dBm.

The multiple interference levels correspond to multiple interference degrees. Of course, the multiple interference levels may also be divided into finer interference levels. For example, the multiple interference levels may specifically be: super strong interference level, strong interference level, medium interference level, and weak interference level.

In the embodiment of the present invention, the multiple interference levels are divided into strong interference level, medium interference level and weak interference level as an example. FIG. 2 is a schematic diagram of interference between base stations in a heterogeneous network. For the second base station B in FIG. 2, user equipment 2 is scheduled on a certain time-frequency resource. On the same time-frequency resource, the first base station schedules different user equipment 1, 3, 4, and 5, and the second base station schedules user equipment 2. Device 2 causes interference to varying degrees. Wherein, the degree of interference caused by user equipment 1 and 5 is a strong interference level, the degree of interference caused by user equipment 3 is a medium interference level, and the degree of interference caused by user equipment 4 is a weak interference level.

When different user equipments send uplink signals to the first base station, multiple interference levels will be formed on the second base station, and the second base station B determines one interference level among the multiple interference levels according to the user equipments scheduled by the first base station.

302. Based on the correspondence between multiple interference levels and multiple time-frequency resources, the second base station selects a time-frequency resource corresponding to the one interference level for the user equipment from multiple time-frequency resources, where the multiple time-frequency resources Resources do not overlap with each other.

The corresponding relationship between the multiple interference levels and the multiple time-frequency resources specifically represents a relationship on which time-frequency resources user equipments with different interference levels can be scheduled. The time-frequency resources may be subframe resources or subband resources.

Specifically, take the correspondence between multiple interference levels and multiple subframe resources as an example, where the multiple subframe resources do not overlap each other.

For example, the corresponding relationship between multiple interference levels and multiple subframe resources is as follows: 3 subframes are used as a period; for each period, user equipments with different interference levels in the order of strong interference level, medium interference level and weak interference level Allocate subframe resources. It can be obtained that the user equipment at the strong interference level may be scheduled on subframe resources with subframe numbers 0, 3, 6, 9, ..., n, n+3, ....

The second base station selects, for the user equipment, a time-frequency resource corresponding to the one interference level from among the multiple time-frequency resources based on the correspondence between the multiple interference levels and the multiple time-frequency resources. For example, when the one interference level is a strong interference level, the second base station may select a time-frequency resource corresponding to the strong interference level.

303. When the second base station schedules the user equipment on the time-frequency resource corresponding to the one interference level, the second base station selects, for the user equipment, link adaptation parameters corresponding to the one interference level and Uplink power control parameters.

The second base station sets link adaptive parameters and uplink power control parameters respectively for multiple interference levels.

The quality of the link condition is mainly measured by the signal to interference and noise ratio SINR (Signal to Interference and NoiseRatio). SINR is the ratio of signal energy to interfering noise energy. In the same channel, when the signal energy is the same, the greater the interference noise energy, the smaller the SINR, and the worse the link condition; the smaller the interference noise energy, the larger the SINR, and the better the link condition. Interference noise energy is determined by the interference level.

For the multiple interference levels, the second base station respectively calculates link adaptation parameters suitable for data transmission by the user equipment. The parameters of link adaptation include: RI, PMI and CQI.

Among them, RI stands for rank indication, which is an important feedback information in the LTE system, reflecting the number of data streams that the current channel can allow for downlink transmission, and is mainly used to indicate the number of layers of data transmission. PMI stands for Precoding Indication. CQI stands for Channel Quality Index, which is a measurement standard for the communication quality of a wireless channel. Generally, a larger CQI indicates a channel with high quality, and a smaller CQI indicates a channel with low quality.

After the second base station selects a link adaptation parameter corresponding to the one interference level for the user equipment, the user equipment selects an appropriate channel for uplink data transmission according to the link adaptation parameter.

When the user equipment communicates with the base station, the user equipment needs to determine the power of the transmitted signal so that the power of the signal when it reaches the base station remains at a level suitable for reception. There is a fixed formula for determining the transmission power of the user equipment. In the user equipment transmit power formula, p0 represents the target power value, α represents the path loss compensation coefficient, ΔMCS represents the compensation value adopted by different modulation and coding orders, and δ represents closed-loop power control, which are determined by the base station and then notified to the user equipment.

The determination of the power control parameters in the transmit power of the user equipment is related to the interference level. Therefore, the second base station sets multiple sets of uplink power control parameters for various interference levels.

After the second base station selects an uplink power control parameter corresponding to the one interference level for the user equipment, it sends the uplink power control parameter to the user equipment, so that the user equipment controls the uplink power according to the uplink power control parameter. parameter determines the transmit power.

After the second base station determines various link adaptation parameters and multiple sets of power control parameters for various interference levels, the second base station, based on the correspondence between multiple interference levels and multiple time-frequency resources, when the When the second base station schedules the user equipment on the time-frequency resource corresponding to the one interference level, the second base station selects a link adaptation parameter and an uplink power control parameter corresponding to the one interference level for the user equipment .

An embodiment of the present invention provides a method for scheduling user equipment uplink resources. The second base station determines an interference level among multiple interference levels; and based on the correspondence between multiple interference levels and multiple time-frequency resources, In the resources, a time-frequency resource corresponding to the one interference level is selected for the user equipment; when the second base station schedules the user equipment on the time-frequency resource corresponding to the one interference level, the second base station provides the user equipment Selecting link adaptive parameters and uplink power control parameters corresponding to the one interference level. For UEs with different interference levels, if the first base station performs scheduling on a specific time-frequency resource, then the interference level to the second base station on the specific time-frequency resource is determined; furthermore, the second base station at the corresponding time When scheduling user equipment on frequency resources, link adaptation parameters and power control parameters can be determined more accurately.

Embodiment two,

An embodiment of the present invention provides a method for scheduling user equipment uplink resources. The scenario shown in FIG. Base stations A, B, and C are second base stations, and current user equipments within the coverage of the first base station are 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10. As shown in Figure 5, the method includes:

501. The first base station determines an interference level among multiple interference levels.

Wherein, the multiple interference levels respectively represent multiple levels of interference to the second base station when the user equipment sends an uplink signal to the first base station.

There are multiple ways for the first base station to determine an interference level among multiple interference levels.

For example, the first base station receives the received signal quality from the second base station to the user equipment reported by the user equipment, and determines the one interference level among multiple interference levels according to the received signal quality. Specifically, the first base station receives the received signal from the second base station A, B, C to each user equipment reported by the user equipment 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 quality, and determine a path loss from each user equipment to each second base station according to the received signal quality. The first base station receives the transmission power headroom information reported by each user equipment, and acquires the transmission power of each user equipment according to the transmission power headroom information. The first base station acquires, according to the obtained path loss from each user equipment to each second base station and the transmit power of each user equipment, the connection between each user equipment to the second base station A, B , C interference level. When a user equipment sends an uplink signal to the first base station, the first base station may determine one of multiple interference levels for each second base station according to the interference degree of the user equipment to each second base station interference level.

Optionally, the first base station may also determine an interference level among multiple interference levels by receiving the one interference level sent by the second base station, and the one interference level is determined by the second base station according to the The measurement reference signal of the user equipment is determined from a plurality of interference levels. Specifically, the first base station instructs the current user equipment within the coverage to send the measurement reference signal on the specified time-frequency resource. After receiving the measurement reference signal, the second base stations A, B, and C measure the measurement reference signal on the corresponding time-frequency resource according to the time-frequency resource occupied by the measurement reference signal to obtain the user The device reports one interference level to each second base station, and sends each one interference level to the first base station. When a user equipment sends an uplink signal to the first base station, the first base station may determine one of multiple interference levels for each second base station according to the interference degree of the user equipment to each second base station interference level.

For example, the interference levels of user equipments 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 to the second base station A are respectively: -76, -76, -70, -82, -93 , -114, -123, -131, -134, -130. The interference levels of user equipments 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 to the second base station B are: -89, -90, -110, -65, -70, -74, -128, -132, -134, -134. The interference levels of user equipments 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 to the second base station C are: -122, -126, -131, -90, -91, -112, -60, -63, -76, -73.

When the user equipment 1 sends an uplink signal to the first base station, the interference level to the second base station A is a strong interference level, the interference level to the second base station B is a medium interference level, and the interference level to the second base station C is Weak interference level. The first base station A determines an interference level among a plurality of interference levels for the second base stations B, C and D respectively.

502. Based on the correspondence between multiple interference levels and multiple time-frequency resources, the first base station selects a time-frequency resource corresponding to the one interference level for the user equipment from multiple time-frequency resources, where the multiple time-frequency resources Resources do not overlap with each other.

The corresponding relationship between the multiple interference levels and the multiple time-frequency resources specifically represents a relationship on which time-frequency resources user equipments with different interference levels can be scheduled. The time-frequency resources may be subframe resources or subband resources. Specifically, take the correspondence between multiple interference levels and multiple subframe resources as an example, where the multiple subframe resources do not overlap each other.

When there is only one second base station, in the relationship between the multiple interference levels determined by the first base station and the multiple time-frequency resources, each time-frequency resource corresponds to one interference level.

For example, the corresponding relationship between multiple interference levels and multiple subframe resources is: taking 3 subframes as a period, for each period, user equipment with different interference levels in the order of strong interference level, medium interference level and weak interference level Allocate subframe resources. It can be obtained that the user equipment at the strong interference level may be scheduled on subframe resources with subframe numbers 0, 3, 6, 9, ..., n, n+3, ....

When there are multiple second base stations, since the same user equipment does not necessarily cause the same degree of interference to different second base stations when sending an uplink signal to the first base station, each time-frequency resource is for a different A second base station, with a different level of interference.

According to the interference level and the time-frequency resource, the first base station may determine correspondences between multiple types of multiple interference levels and multiple time-frequency resources.

Taking multiple interference levels as strong interference level, medium interference level and weak interference level, time-frequency resources are divided into subframe resources according to subframes as an example, the corresponding relationship between multiple interference levels and multiple subframe resources can be as follows: with 6 subframe resources A frame is a period, and for each period, according to the interference level to the second base station B as a strong interference level, the interference level to the second base station C as a medium interference level, and the interference level to the second base station D as a weak interference level, The interference level to the second base station B is a strong interference level, the interference level to the second base station C is a weak interference level, the interference level to the second base station D is a medium interference level, and the interference level to the second base station B is a medium interference level The interference level to the second base station C is a strong interference level, the interference level to the second base station D is a weak interference level, the interference level to the second base station B is a medium interference level, and the interference level to the second base station C is Weak interference level, the interference level to the second base station D is a medium interference level, the interference level to the second base station B is a weak interference level, the interference level to the second base station C is a strong interference level, and the interference level to the second base station D is The interference level is the medium interference level, the interference level to the second base station B is the weak interference level, the interference level to the second base station C is the medium interference level, and the interference level to the second base station D is the strong interference level. Subframe resources.

Then, user equipment 1 may be scheduled by the first base station on subframe resources with subframe numbers 0, 6, 12, . . . , n, n+6, . . .

As shown in Figure 6, a schematic diagram of the corresponding relationship between multiple interference levels and time-frequency resources for subframe resources allocated for multiple interference levels, where 0, 1, 2, ... represent subframe numbers, L, M, N Indicates different interference levels. As shown in Figure 7, a schematic diagram of the corresponding relationship between multiple interference levels and time-frequency resources allocated to multiple interference levels, where 0, 1, 2, ... represent sub-band numbers, L, M, N Indicates different interference levels. As shown in FIG. 8 , it is a schematic diagram of the corresponding relationship between multiple interference levels and time-frequency resources that allocate subband resources on subframes for multiple interference levels, wherein each column represents a subframe, and each row represents a subband. L, M, N represent different interference levels. The method for allocating subband resources for each interference level by the first base station, and the method for allocating subband resources for each interference level in subframes by the first base station are the same as the method for allocating subband resources for each interference level by the first base station The method for the subframe resources is the same, and will not be repeated here in this embodiment of the present invention.

503. The first base station schedules the user equipment on the time-frequency resource corresponding to the one interference level.

After the first base station selects the time-frequency resource corresponding to the one interference level for the user equipment among the multiple time-frequency resources based on the correspondence between multiple interference levels and multiple time-frequency resources, the first base station Scheduling the user equipment on the time-frequency resource corresponding to the one interference level.

504. The first base station sends correspondences between the multiple interference levels and multiple time-frequency resources to the second base station.

After the first base station determines the correspondence between the multiple interference levels and the multiple time-frequency resources, the first base station sends the correspondence between the multiple interference levels and the multiple time-frequency resources to the second base station.

505. The second base station receives the correspondence between the multiple interference levels and multiple time-frequency resources sent by the first base station.

506. The second base station determines an interference level among multiple interference levels.

The multiple interference levels respectively represent multiple levels of interference to the second base station when other user equipments send uplink signals to the first base station.

When different user equipments send uplink signals to the first base station, various levels of interference will be formed on the second base station. The second base station determines an interference level among multiple interference levels according to the user equipment scheduled by the first base station.

There are multiple ways for the second base station to determine an interference level among multiple interference levels.

For example, the second base station receives the received signal quality from the second base station to the user equipment reported by the user equipment, and determines the one interference level among multiple interference levels according to the received signal quality. Specifically, the second base station receives the received signal quality from the second base station to the user equipment reported by the user equipment, and determines the path loss from the user equipment to the second base station according to the received signal quality. The second base station receives the transmission power headroom information reported by the user equipment, and acquires an interference level of the user equipment to the second base station according to the path loss and the transmission power of the user equipment.

Optionally, the second base station may further determine the one interference level from multiple interference levels according to a measurement reference signal that the second base station measures the user equipment. Specifically, the second base station receives a measurement reference signal sent by the user equipment on a designated time-frequency resource, and obtains an interference of the user equipment to the second base station according to measuring the measurement reference signal on the corresponding time-frequency resource Level.

Optionally, the second base station may also receive the one interference level determined by the first base station from multiple interference levels.

507. Based on the correspondence between multiple interference levels and multiple time-frequency resources, the second base station selects a time-frequency resource corresponding to the one interference level for the user equipment from multiple time-frequency resources, where the multiple time-frequency resources Resources do not overlap with each other.

The second base station selects, for the user equipment, a time-frequency resource corresponding to the one interference level from among the multiple time-frequency resources based on the correspondence between the multiple interference levels and the multiple time-frequency resources. For example, when the one interference level is a strong interference level, the second base station may select a time-frequency resource corresponding to the strong interference level.

508. When the second base station schedules the user equipment on the time-frequency resource corresponding to the one interference level, the second base station selects, for the user equipment, link adaptation parameters corresponding to the one interference level and Uplink power control parameters.

The second base station sets link adaptive parameters and uplink power control parameters respectively for multiple interference levels.

The quality of the link condition is mainly measured by the signal to interference and noise ratio SINR (Signal to Interference and NoiseRatio). SINR is the ratio of signal energy to interfering noise energy. In the same channel, when the signal energy is the same, the greater the interference noise energy, the smaller the SINR, and the worse the link condition; the smaller the interference noise energy, the larger the SINR, and the better the link condition. Interference noise energy is determined by the interference level.

For the multiple interference levels, the second base station respectively calculates link adaptation parameters suitable for data transmission by the user equipment. The parameters of link adaptation include: RI, PMI and CQI.

Among them, RI stands for rank indication, which is an important feedback information in the LTE system, reflecting the number of data streams that the current channel can allow for downlink transmission, and is mainly used to indicate the number of layers of data transmission. PMI stands for Precoding Indication. CQI stands for Channel Quality Index, which is a measurement standard for the communication quality of a wireless channel. Generally, a larger CQI indicates a channel with high quality, and a smaller CQI indicates a channel with low quality.

After the second base station selects a link adaptation parameter corresponding to the one interference level for the user equipment, the user equipment selects an appropriate channel for uplink data transmission according to the link adaptation parameter.

When the user equipment communicates with the base station, the user equipment needs to determine the power of the transmitted signal so that the power of the signal when it reaches the base station remains at a level suitable for reception. There is a fixed formula for determining the transmission power of the user equipment. In the transmit power formula of the user equipment, p ₀ represents the target power value, α represents the path loss compensation coefficient, _ΔMCS represents the compensation value adopted by different modulation and coding orders, and δ represents the closed-loop power control, all of which are determined by the base station and then notified to the user equipment .

The determination of the power control parameters in the transmit power of the user equipment is related to the interference level. Therefore, the second base station sets multiple sets of uplink power control parameters for various interference levels.

Take the multiple interference levels as a strong interference level, a medium interference level and a weak interference level as an example. The second base station sets three sets of power control parameters according to multiple interference levels, and the user equipment has three sets of transmit power calculation formulas.

Specifically, the three sets of transmit power calculation formulas can be:

P _T1 = min{P _max , P _0,1 +α ₁ PL _DL +10log ₁₀ (M)+Δ _MCS,1 +δ ₁ };

P _T2 = min{P _max , P _0,2 +α ₂ PL _DL +10log ₁₀ (M)+Δ _MCS,2 +δ ₂ };

P _T3 =min{P _max , P _0,3 +α ₃ PL _DL +10log ₁₀ (M)+Δ _MCS,3 +δ ₃ }

Wherein, the P _T1 is a transmit power formula corresponding to a set of power control parameters determined by the strong interference level, and the transmit power of the user equipment on the time-frequency resource corresponding to the strong interference level is P _T1 . The P _T2 is a transmission power formula corresponding to a set of power control parameters determined by the medium interference level, and the transmission power of the user equipment on the time-frequency resource corresponding to the medium interference level is P _T2 . The P _T3 is a transmission power formula corresponding to a set of power control parameters determined by the weak interference level, and the transmission power of the user equipment on the time-frequency resource corresponding to the weak interference level is P _T3 .

After the second base station selects an uplink power control parameter corresponding to the one interference level for the user equipment, it sends the uplink power control parameter to the user equipment, so that the user equipment controls the uplink power according to the uplink power control parameter. parameter determines the transmit power.

After the second base station determines various link adaptation parameters and multiple sets of power control parameters for various interference levels, the second base station, based on the correspondence between multiple interference levels and multiple time-frequency resources, when the When the second base station schedules the user equipment on the time-frequency resource corresponding to the one interference level, the second base station selects a link adaptation parameter and an uplink power control parameter corresponding to the one interference level for the user equipment .

An embodiment of the present invention provides a method for scheduling user equipment uplink resources. The second base station determines an interference level among multiple interference levels; and based on the correspondence between multiple interference levels and multiple time-frequency resources, In the resources, a time-frequency resource corresponding to the one interference level is selected for the user equipment; when the second base station schedules the user equipment on the time-frequency resource corresponding to the one interference level, the second base station provides the user equipment Selecting link adaptive parameters and uplink power control parameters corresponding to the one interference level. For UEs with different interference levels, if the first base station performs scheduling on a specific time-frequency resource, then the interference level to the second base station on the specific time-frequency resource is determined; furthermore, the second base station at the corresponding time When scheduling user equipment on frequency resources, link adaptation parameters and power control parameters can be determined more accurately.

Embodiment three,

An embodiment of the present invention provides a first base station, where the first base station 90 includes: a determining unit 91 , a selecting unit 92 , and a scheduling unit 93 .

The determining unit 91 is configured to determine an interference level among multiple interference levels, wherein the multiple interference levels respectively represent multiple levels of interference to the second base station when the user equipment sends an uplink signal to the first base station.

When the second base station schedules the user equipment, if the scheduling unit 93 schedules the user equipment on the same time-frequency resource, the user equipment scheduled by the scheduling unit 93 will cause different degrees of interference to the user equipment scheduled by the second base station . The multiple interference levels may specifically be: a strong interference level, a medium interference level, and a weak interference level. Specifically, the strong interference level refers to an interference level whose interference level value is greater than -80dBm, and the medium interference level refers to an interference level value An interference level in the interval [-120dBm, -80dBm], the weak interference level refers to an interference level whose interference level value is less than -120dBm.

The multiple interference levels correspond to multiple interference degrees. Of course, the multiple interference levels may also be divided into finer interference levels. For example, the multiple interference levels may specifically be: super strong interference level, strong interference level, medium interference level, and weak interference level.

In the embodiment of the present invention, the multiple interference levels are divided into strong interference level, medium interference level and weak interference level as an example. FIG. 2 is a schematic diagram of interference between base stations in a heterogeneous network. For the second base station B in Fig. 2, user equipment 2 is scheduled on a certain time-frequency resource, and on the same time-frequency resource, the scheduling unit 93 schedules different user equipment 1, 3, 4, 5, and the second base station Scheduling user equipment 2 causes different levels of interference. Wherein, the degree of interference caused by user equipment 1 and 5 is a strong interference level, the degree of interference caused by user equipment 3 is a medium interference level, and the degree of interference caused by user equipment 4 is a weak interference level.

When the user equipment sends an uplink signal to the determination unit 91, the determination unit 91 determines an interference level among multiple interference levels according to the interference level of the user equipment, for example, when the user equipment 1 sends an uplink signal to the determination unit 91 When an uplink signal is sent, one interference level determined by the determining unit 91 among the multiple interference levels is a strong interference level.

There are multiple ways for the determining unit 91 to determine an interference level among multiple interference levels.

For example, the determining unit 91 receives the received signal quality from the second base station to the user equipment reported by the user equipment, and determines the one interference level among multiple interference levels according to the received signal quality. Specifically, the determining unit 91 receives the received signal from the second base station A, B, C to each user equipment reported by the user equipment 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 quality, and determine a path loss from each user equipment to each second base station according to the received signal quality. The determining unit 91 receives the transmission power headroom information reported by each user equipment, and acquires the transmission power of each user equipment according to the transmission power headroom information. The determining unit 91 obtains, according to the obtained path loss from each user equipment to each second base station and the transmit power of each user equipment, the connection between each user equipment to the second base stations A and B. , C interference level. When a user equipment sends an uplink signal to the determination unit 91, the determination unit 91 may determine one of multiple interference levels for each second base station according to the interference degree of the user equipment to each second base station interference level.

Optionally, the determining unit 91 may also determine an interference level among multiple interference levels by receiving the one interference level sent by the second base station, and the one interference level is determined by the second base station according to the measurement of the second base station. The measurement reference signal of the user equipment is determined from a plurality of interference levels. Specifically, the determining unit 91 instructs the current user equipment within the coverage to send the measurement reference signal on the designated time-frequency resource. After receiving the measurement reference signal, the second base stations A, B, and C measure the measurement reference signal on the corresponding time-frequency resource according to the time-frequency resource occupied by the measurement reference signal to obtain the user The device generates an interference level for each of the second base stations, and sends each of the interference levels to the determining unit 91 . When a user equipment sends an uplink signal to the determination unit 91, the determination unit 91 may determine one of multiple interference levels for each second base station according to the interference degree of the user equipment to each second base station interference level.

For example, the interference levels of user equipments 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 to the second base station A are respectively: -76, -76, -70, -82, -93 , -114, -123, -131, -134, -130. The interference levels of user equipments 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 to the second base station B are: -89, -90, -110, -65, -70, -74, -128, -132, -134, -134. The interference levels of user equipments 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 to the second base station C are: -122, -126, -131, -90, -91, -112, -60, -63, -76, -73.

When the user equipment 1 sends an uplink signal to the determining unit 91, the interference level to the second base station A is a strong interference level, the interference level to the second base station B is a medium interference level, and the interference level to the second base station C is The level is weak interference level. The determination unit 91 determines an interference level among a plurality of interference levels for the second base stations B, C and D respectively.

The selection unit 92 is configured to, based on the correspondence between multiple interference levels and multiple time-frequency resources, select a time-frequency resource corresponding to the one interference level for the user equipment from multiple time-frequency resources, wherein the multiple The time-frequency resources do not overlap with each other.

The corresponding relationship between the multiple interference levels and the multiple time-frequency resources specifically represents a relationship on which time-frequency resources user equipments with different interference levels can be scheduled. The time-frequency resources may be subframe resources or subband resources.

Specifically, take the correspondence between multiple interference levels and multiple subframe resources as an example, where the multiple subframe resources do not overlap each other.

When there is only one second base station, in the relationship between the multiple interference levels determined by the determining unit 91 and the multiple time-frequency resources, each time-frequency resource corresponds to one interference level.

For example, the corresponding relationship between multiple interference levels and multiple subframe resources can be as follows: 3 subframes are used as a period; for each period, users with different interference levels are assigned in the order of strong interference level, medium interference level and weak interference level The device allocates subframe resources. It can be obtained that the user equipment at the strong interference level may be scheduled on subframe resources with subframe numbers 0, 3, 6, 9, ..., n, n+3, ....

When there are multiple second base stations, since the same user equipment does not necessarily cause the same degree of interference to different second base stations when sending an uplink signal to the determining unit 91, therefore, each time-frequency resource is Different second base stations have different interference levels.

The determining unit 91 is further configured to determine correspondences between multiple interference levels and multiple time-frequency resources.

The determining unit 91 may determine correspondences between multiple interference levels and multiple time-frequency resources according to the interference level and the time-frequency resources.

Taking multiple interference levels as strong interference level, medium interference level and weak interference level, time-frequency resources are divided into subframe resources according to subframes as an example, the corresponding relationship between multiple interference levels and multiple subframe resources can be as follows: with 6 subframe resources A frame is a period, and for each period, according to the interference level to the second base station B as a strong interference level, the interference level to the second base station C as a medium interference level, and the interference level to the second base station D as a weak interference level, The interference level to the second base station B is a strong interference level, the interference level to the second base station C is a weak interference level, the interference level to the second base station D is a medium interference level, and the interference level to the second base station B is a medium interference level The interference level to the second base station C is a strong interference level, the interference level to the second base station D is a weak interference level, the interference level to the second base station B is a medium interference level, and the interference level to the second base station C is Weak interference level, the interference level to the second base station D is a medium interference level, the interference level to the second base station B is a weak interference level, the interference level to the second base station C is a strong interference level, and the interference level to the second base station D is The interference level is the medium interference level, the interference level to the second base station B is the weak interference level, the interference level to the second base station C is the medium interference level, and the interference level to the second base station D is the strong interference level. Subframe resources.

Then, user equipment 1 may be scheduled by the scheduling unit 93 on subframe resources with subframe numbers 0, 6, 12, . . . , n, n+6, . . .

As shown in Figure 6, a schematic diagram of the corresponding relationship between multiple interference levels and time-frequency resources for subframe resources allocated for multiple interference levels, where 0, 1, 2, ... represent subframe numbers, L, M, N Indicates different interference levels. As shown in Figure 7, a schematic diagram of the corresponding relationship between multiple interference levels and time-frequency resources allocated to multiple interference levels, where 0, 1, 2, ... represent sub-band numbers, L, M, N Indicates different interference levels. As shown in FIG. 8 , it is a schematic diagram of the corresponding relationship between multiple interference levels and time-frequency resources that allocate subband resources on subframes for multiple interference levels, wherein each column represents a subframe, and each row represents a subband. L, M, N represent different interference levels. The method for the determination unit 91 to allocate subband resources for each interference level, and the method for the determination unit 91 to allocate subband resources on subframes for each interference level are the same as the method for the determination unit 91 to allocate subband resources for each interference level The method for the subframe resources is the same, and will not be repeated here in this embodiment of the present invention.

The selecting unit 92 selects, for the user equipment, a time-frequency resource corresponding to the one interference level among the multiple time-frequency resources based on the correspondence between multiple interference levels and multiple time-frequency resources. For example, when the one interference level is a strong interference level, the selection unit 92 may select the time-frequency resource corresponding to the strong interference level.

The scheduling unit 93 is configured to schedule the user equipment on the time-frequency resource corresponding to the one interference level.

After the selection unit 92 selects the time-frequency resource corresponding to the one interference level for the user equipment among the multiple time-frequency resources based on the correspondence between multiple interference levels and multiple time-frequency resources, the scheduling unit 93 Scheduling the user equipment on the time-frequency resource corresponding to the one interference level.

As shown in FIG. 10 , the first base station 90 further includes: a sending unit 94 .

The sending unit 94 is configured to send correspondences between the multiple interference levels and multiple time-frequency resources to the second base station.

After the determination unit 91 determines the correspondence between multiple interference levels and multiple time-frequency resources, the sending unit 94 sends the correspondence between the multiple interference levels and multiple time-frequency resources to the second base station .

An embodiment of the present invention provides a first base station, wherein the determination unit determines an interference level among multiple interference levels; Selecting a time-frequency resource corresponding to the one interference level among the resources for the user equipment; then, the scheduling unit schedules the user equipment on the time-frequency resource corresponding to the one interference level. For UEs with different interference levels, if the first base station performs scheduling on a specific time-frequency resource, then the interference level to the second base station on the specific time-frequency resource is determined; furthermore, the second base station at the corresponding time When scheduling user equipment on frequency resources, link adaptation parameters and power control parameters can be determined more accurately.

Embodiment four,

An embodiment of the present invention provides a second base station, where the second base station 110 includes: a determining unit 111 , a selecting unit 112 , and a scheduling unit 113 .

The determining unit 111 is configured to determine an interference level among multiple interference levels, and the multiple interference levels respectively represent multiple levels of interference to the second base station by other user equipments when sending uplink signals to the first base station.

When the scheduling unit 113 schedules the user equipment, if the first base station schedules the user equipment on the same time-frequency resource, the user equipment scheduled by the first base station will cause different degrees of interference to the user equipment scheduled by the scheduling unit 113 . The multiple interference levels may specifically be: a strong interference level, a medium interference level, and a weak interference level. Specifically, the strong interference level refers to an interference level whose interference level value is greater than -80dBm, and the medium interference level refers to an interference level value An interference level in the interval [-120dBm, -80dBm], the weak interference level refers to an interference level whose interference level value is less than -120dBm.

The multiple interference levels correspond to multiple interference degrees. Of course, the multiple interference levels may also be divided into finer interference levels. For example, the multiple interference levels may specifically be: super strong interference level, strong interference level, medium interference level, and weak interference level.

In the embodiment of the present invention, the multiple interference levels are divided into strong interference level, medium interference level and weak interference level as an example. FIG. 2 is a schematic diagram of interference between base stations in a heterogeneous network. The scheduling unit 113 in FIG. 2 schedules user equipment 2 on a certain time-frequency resource, and on the same time-frequency resource, the first base station schedules different user equipment 1, 3, 4, 5, and the scheduling unit 113 User equipment 2 causes interference to different degrees. Wherein, the degree of interference caused by user equipment 1 and 5 is a strong interference level, the degree of interference caused by user equipment 3 is a medium interference level, and the degree of interference caused by user equipment 4 is a weak interference level.

When different user equipments send uplink signals to the first base station, multiple interference levels will be formed on the second base station, and the scheduling unit 113 determines one interference level among the multiple interference levels according to the user equipments scheduled by the first base station.

There are multiple ways for the determining unit 111 to determine an interference level among multiple interference levels.

For example, the determining unit 111 receives the received signal quality from the second base station to the user equipment reported by the user equipment, and determines the one interference level among multiple interference levels according to the received signal quality. Specifically, the determining unit 111 receives the received signal quality from the second base station to the user equipment reported by the user equipment, and determines the path loss from the user equipment to the second base station according to the received signal quality. The determining unit 111 receives the transmission power headroom information reported by the user equipment, and obtains an interference level of the user equipment to the second base station according to the path loss and the transmission power of the user equipment.

The determining unit 111 may also determine the one interference level from multiple interference levels according to the measurement reference signal of the user equipment measured by the second base station. Specifically, the determining unit 111 receives a measurement reference signal sent by the user equipment on a designated time-frequency resource, and obtains an interference of the user equipment to the second base station according to measuring the measurement reference signal on the corresponding time-frequency resource Level.

The determining unit 111 is specifically further configured to receive, from the first base station, the one interference level determined by the first base station from multiple interference levels.

The selection unit 112 is configured to, based on the correspondence between multiple interference levels and multiple time-frequency resources, select a time-frequency resource corresponding to the one interference level for the user equipment from multiple time-frequency resources, wherein the multiple The time-frequency resources do not overlap with each other.

The corresponding relationship between the multiple interference levels and the multiple time-frequency resources specifically represents a relationship on which time-frequency resources user equipments with different interference levels can be scheduled. The time-frequency resources may be subframe resources or subband resources.

Specifically, take the correspondence between multiple interference levels and multiple subframe resources as an example, where the multiple subframe resources do not overlap each other.

For example, the corresponding relationship between multiple interference levels and multiple subframe resources is as follows: 3 subframes are used as a period; for each period, user equipments with different interference levels in the order of strong interference level, medium interference level and weak interference level Allocate subframe resources. It can be obtained that the user equipment at the strong interference level may be scheduled on subframe resources with subframe numbers 0, 3, 6, 9, ..., n, n+3, ....

The selection unit 112 selects, for the user equipment, a time-frequency resource corresponding to the one interference level among the multiple time-frequency resources based on the correspondence between multiple interference levels and multiple time-frequency resources. For example, when the one interference level is a strong interference level, the selection unit 112 may select the time-frequency resource corresponding to the strong interference level.

The scheduling unit 113 is configured to select, for the user equipment, link adaptation parameters and uplink parameters corresponding to the one interference level when scheduling the user equipment on the time-frequency resource corresponding to the one interference level power control parameters.

The scheduling unit 113 sets link adaptive parameters and uplink power control parameters respectively for multiple interference levels.

The quality of the link condition is mainly measured by the signal to interference and noise ratio SINR (Signal to Interference and NoiseRatio). SINR is the ratio of signal energy to interfering noise energy. In the same channel, when the signal energy is the same, the greater the interference noise energy, the smaller the SINR, and the worse the link condition; the smaller the interference noise energy, the larger the SINR, and the better the link condition. Interference noise energy is determined by the interference level.

The scheduling unit 113 respectively calculates link adaptation parameters suitable for the user equipment to transmit data with respect to the multiple interference levels. The parameters of link adaptation include: RI, PMI and CQI.

Among them, RI stands for rank indication, which is an important feedback information in the LTE system, reflecting the number of data streams that the current channel can allow for downlink transmission, and is mainly used to indicate the number of layers of data transmission. PMI stands for Precoding Indication. CQI stands for Channel Quality Index, which is a measurement standard for the communication quality of a wireless channel. Generally, a larger CQI indicates a channel with high quality, and a smaller CQI indicates a channel with low quality.

After the scheduling unit 113 selects a link adaptation parameter corresponding to the one interference level for the user equipment, the user equipment selects an appropriate channel for uplink data transmission according to the link adaptation parameter.

When the user equipment communicates with the base station, the user equipment needs to determine the power of the transmitted signal so that the power of the signal when it reaches the base station remains at a level suitable for reception. There is a fixed formula for determining the transmission power of the user equipment. In the transmit power formula of the user equipment, p ₀ represents the target power value, α represents the path loss compensation coefficient, _ΔMCS represents the compensation value adopted by different modulation and coding orders, and δ represents the closed-loop power control, all of which are determined by the base station and then notified to the user equipment .

The determination of the power control parameters in the transmit power of the user equipment is related to the interference level. Therefore, the scheduling unit 113 sets multiple sets of uplink power control parameters for various interference levels.

Take the multiple interference levels as a strong interference level, a medium interference level and a weak interference level as an example. The second base station sets three sets of power control parameters according to multiple interference levels, and the user equipment has three sets of transmit power calculation formulas.

Specifically, the three sets of transmit power calculation formulas can be:

P _T1 = min{P _max , P _0,1 +α ₁ PL _DL +10log ₁₀ (M)+Δ _MCS,1 +δ ₁ };

P _T2 = min{P _max , P _0,2 +α ₂ PL _DL +10log ₁₀ (M)+Δ _MCS,2 +δ ₂ };

P _T3 =min{P _max , P _0,3 +α ₃ PL _DL +10log ₁₀ (M)+Δ _MCS,3 +δ ₃ }

Wherein, the P _T1 is a transmit power formula corresponding to a set of power control parameters determined by the strong interference level, and the transmit power of the user equipment on the time-frequency resource corresponding to the strong interference level is P _T1 . The P _T2 is a transmission power formula corresponding to a set of power control parameters determined by the medium interference level, and the transmission power of the user equipment on the time-frequency resource corresponding to the medium interference level is P _T2 . The P _T3 is a transmission power formula corresponding to a set of power control parameters determined by the weak interference level, and the transmission power of the user equipment on the time-frequency resource corresponding to the weak interference level is P _T3 .

After the scheduling unit 113 selects an uplink power control parameter corresponding to the one interference level for the user equipment, it sends the uplink power control parameter to the user equipment, so that the user equipment controls the uplink power according to the uplink power control parameter. parameter determines the transmit power.

After the scheduling unit 113 determines various link adaptation parameters and multiple sets of power control parameters for various interference levels, the scheduling unit 113 based on the correspondence between multiple interference levels and multiple time-frequency resources, when the When the scheduling unit 113 schedules the user equipment on the time-frequency resource corresponding to the one interference level, the scheduling unit 113 selects the link adaptation parameter and the uplink power corresponding to the one interference level for the user equipment control parameter.

As shown in FIG. 12 , the second base station 110 further includes a receiving unit 114 .

The receiving unit 114 is configured to receive correspondences between the multiple interference levels and multiple time-frequency resources from the first base station.

An embodiment of the present invention provides a second base station, wherein the determination unit determines an interference level among multiple interference levels; In the resources, a time-frequency resource corresponding to the one interference level is selected for the user equipment; when the scheduling unit schedules the user equipment on the time-frequency resource corresponding to the one interference level, the scheduling unit is the The user equipment selects a link adaptive parameter and an uplink power control parameter corresponding to the one interference level. For UEs with different interference levels, if the first base station performs scheduling on a specific time-frequency resource, then the interference level to the second base station on the specific time-frequency resource is determined; furthermore, the second base station at the corresponding time When scheduling user equipment on frequency resources, link adaptation parameters and power control parameters can be determined more accurately.

Embodiment five,

An embodiment of the present invention provides a first base station, where the first base station 130 includes: a processor 131 .

The processor 131 is configured to determine an interference level among multiple interference levels, wherein the multiple interference levels respectively represent multiple levels of interference to the second base station when the user equipment sends an uplink signal to the first base station.

When the second base station schedules the user equipment, if the processor 131 schedules the user equipment on the same time-frequency resource, the user equipment scheduled by the processor 131 will cause different degrees of interference to the user equipment scheduled by the second base station . The multiple interference levels may specifically be: a strong interference level, a medium interference level, and a weak interference level. Specifically, the strong interference level refers to an interference level whose interference level value is greater than -80dBm, and the medium interference level refers to an interference level value An interference level in the interval [-120dBm, -80dBm], the weak interference level refers to an interference level whose interference level value is less than -120dBm.

The multiple interference levels correspond to multiple interference degrees. Of course, the multiple interference levels may also be divided into finer interference levels. For example, the multiple interference levels may specifically be: super strong interference level, strong interference level, medium interference level, and weak interference level.

In the embodiment of the present invention, the multiple interference levels are divided into strong interference level, medium interference level and weak interference level as an example. FIG. 2 is a schematic diagram of interference between base stations in a heterogeneous network. For the second base station B in FIG. 2, user equipment 2 is scheduled on a certain time-frequency resource. On the same time-frequency resource, the processor 131 schedules different user equipment 1, 3, 4, and 5, and the second base station B Scheduling user equipment 2 causes different levels of interference. Wherein, the degree of interference caused by user equipment 1 and 5 is a strong interference level, the degree of interference caused by user equipment 3 is a medium interference level, and the degree of interference caused by user equipment 4 is a weak interference level.

When the user equipment sends an uplink signal to the processor 131, the processor 131 determines an interference level among multiple interference levels according to the interference level of the user equipment, for example, when the user equipment 1 transmits to the first base station When an uplink signal is used, one interference level determined by the processor 131 among the multiple interference levels is a strong interference level.

The processor 131 is further configured to, based on the correspondence between multiple interference levels and multiple time-frequency resources, select a time-frequency resource corresponding to the one interference level for the user equipment among the multiple time-frequency resources, wherein the Multiple time-frequency resources do not overlap each other.

The corresponding relationship between the multiple interference levels and the multiple time-frequency resources specifically represents a relationship on which time-frequency resources user equipments with different interference levels can be scheduled. The time-frequency resources may be subframe resources or subband resources.

The processor 131 is further configured to determine correspondences between multiple interference levels and multiple time-frequency resources.

Specifically, take the correspondence between multiple interference levels and multiple subframe resources as an example, where the multiple subframe resources do not overlap each other.

For example, the corresponding relationship between multiple interference levels and multiple subframe resources can be as follows: 3 subframes are used as a period; for each period, users with different interference levels are assigned in the order of strong interference level, medium interference level and weak interference level The device allocates subframe resources. It can be obtained that the user equipment at the strong interference level may be scheduled on subframe resources with subframe numbers 0, 3, 6, 9, ..., n, n+3, ....

The processor 131 selects, for the user equipment, a time-frequency resource corresponding to the one interference level among the multiple time-frequency resources based on the correspondence between the multiple interference levels and the multiple time-frequency resources. For example, when the one interference level is a strong interference level, the selecting unit 92 may select the time-frequency resource corresponding to the strong interference level.

The processor 131 is further configured to schedule the user equipment on the time-frequency resource corresponding to the one interference level.

After the processor 131 selects the time-frequency resource corresponding to the one interference level for the user equipment among the multiple time-frequency resources based on the correspondence between multiple interference levels and multiple time-frequency resources, the processor 131 Scheduling the user equipment on the time-frequency resource corresponding to the one interference level.

The first base station 130 further includes: a transmitter 132 .

The transmitter 132 is configured to send the correspondence between the multiple interference levels and multiple time-frequency resources to the second base station.

After the processor 131 determines the correspondence between multiple interference levels and multiple time-frequency resources, the transmitter 132 sends the correspondence between the multiple interference levels and multiple time-frequency resources to the second base station .

It should be noted that the processor 131 shown in FIG. 13 is directly connected to the transmitter 132. In some other embodiments of the present invention, the processor 131, the transmitter 132 and other modules of the device 130 can also be connected through a bus. The bus may be an ISA (Industry Standard Architecture, industry standard architecture) bus, a PCI (Peripheral Component, external device interconnection) bus, or an EISA (Extended Industry Standard Architecture, extended industry standard architecture) bus or the like. The bus can be one or more physical lines, and when there are multiple physical lines, it can be divided into an address bus, a data bus, a control bus, and the like.

In addition, for a person of ordinary skill in the art, reference may be made to the foregoing embodiments for specific implementation of the processor 131 and the transmitter 132 , and details are not repeated here.

An embodiment of the present invention provides a first base station, wherein the processor determines an interference level among multiple interference levels; Selecting, among the resources, a time-frequency resource corresponding to the one interference level for the user equipment; then, the processor schedules the user equipment on the time-frequency resource corresponding to the one interference level. For UEs with different interference levels, if the first base station performs scheduling on a specific time-frequency resource, then the interference level to the second base station on the specific time-frequency resource is determined; furthermore, the second base station at the corresponding time When scheduling user equipment on frequency resources, link adaptation parameters and power control parameters can be determined more accurately.

Embodiment six,

An embodiment of the present invention provides a second base station, where the second base station 140 includes: a processor 141 .

The processor 141 is configured to determine an interference level among multiple interference levels, and the multiple interference levels respectively represent multiple levels of interference to the second base station when other user equipments send uplink signals to the first base station.

When the processor 141 schedules the user equipment, if the first base station schedules the user equipment on the same time-frequency resource, the user equipment scheduled by the first base station will cause different degrees of interference to the user equipment scheduled by the processor 141 . The multiple interference levels may specifically be: a strong interference level, a medium interference level, and a weak interference level. Specifically, the strong interference level refers to an interference level whose interference level value is greater than -80dBm, and the medium interference level refers to an interference level value The interference level in the interval [-120dBm, -80dBm], the weak interference level refers to an interference level whose interference level value is less than -120dBm.

The multiple interference levels correspond to multiple interference degrees. Of course, the multiple interference levels may also be divided into finer interference levels. For example, the multiple interference levels may specifically be: super strong interference level, strong interference level, medium interference level, and weak interference level.

In the embodiment of the present invention, the multiple interference levels are divided into strong interference level, medium interference level and weak interference level as an example. FIG. 2 is a schematic diagram of interference between base stations in a heterogeneous network. For the processor 141 in FIG. 2 to schedule user equipment 2 on a certain time-frequency resource, on the same time-frequency resource, the first base station schedules different user equipment 1, 3, 4, 5, and the processor 141 will 141 User equipment 2 causes interference to different degrees. Wherein, the degree of interference caused by user equipment 1 and 5 is a strong interference level, the degree of interference caused by user equipment 3 is a medium interference level, and the degree of interference caused by user equipment 4 is a weak interference level.

When different user equipments send uplink signals to the first base station, multiple interference levels will be formed on the second base station, and the processor 141 determines one interference level among the multiple interference levels according to the user equipments scheduled by the first base station.

There are multiple ways for the processor 141 to determine an interference level among a plurality of interference levels.

For example, the processor 141 receives the received signal quality from the second base station to the user equipment reported by the user equipment, and determines the one interference level among multiple interference levels according to the received signal quality. Specifically, the processor 141 receives the received signal quality from the second base station to the user equipment reported by the user equipment, and determines the path loss from the user equipment to the second base station according to the received signal quality. The processor 141 receives the transmission power headroom information reported by the user equipment, and acquires an interference level of the user equipment to the second base station according to the path loss and the transmission power of the user equipment.

Optionally, the processor 141 may also determine the one interference level from multiple interference levels according to the measurement reference signal of the user equipment measured by the second base station. Specifically, the processor 141 receives a measurement reference signal sent by the user equipment on a designated time-frequency resource, and obtains an interference of the user equipment to the second base station according to measuring the measurement reference signal on the corresponding time-frequency resource. Level.

The processor 141 is configured to, based on the correspondence between multiple interference levels and multiple time-frequency resources, select a time-frequency resource corresponding to the one interference level for the user equipment from multiple time-frequency resources, where the multiple The time-frequency resources do not overlap with each other.

The corresponding relationship between the multiple interference levels and the multiple time-frequency resources specifically represents a relationship on which time-frequency resources user equipments with different interference levels can be scheduled. The time-frequency resources may be subframe resources or subband resources.

Specifically, take the correspondence between multiple interference levels and multiple subframe resources as an example, where the multiple subframe resources do not overlap each other.

For example, the corresponding relationship between multiple interference levels and multiple subframe resources is as follows: 3 subframes are used as a period; for each period, user equipments with different interference levels in the order of strong interference level, medium interference level and weak interference level Allocate subframe resources. It can be obtained that the user equipment at the strong interference level may be scheduled on subframe resources with subframe numbers 0, 3, 6, 9, ..., n, n+3, ....

The processor 141 selects, for the user equipment, a time-frequency resource corresponding to the one interference level among the multiple time-frequency resources based on the correspondence between the multiple interference levels and the multiple time-frequency resources. For example, when the one interference level is a strong interference level, the processor 141 may select a time-frequency resource corresponding to the strong interference level.

The processor 141 is configured to, when scheduling the user equipment on the time-frequency resource corresponding to the one interference level, select for the user equipment link adaptive parameters and uplink parameters corresponding to the one interference level power control parameters.

The processor 141 sets link adaptive parameters and uplink power control parameters respectively for multiple interference levels.

The quality of the link condition is mainly measured by the signal to interference and noise ratio SINR (Signal to Interference and NoiseRatio). SINR is the ratio of signal energy to interfering noise energy. In the same channel, when the signal energy is the same, the greater the interference noise energy, the smaller the SINR, and the worse the link condition; the smaller the interference noise energy, the larger the SINR, and the better the link condition. Interference noise energy is determined by the interference level.

The processor 141 respectively calculates link adaptation parameters suitable for data transmission by the user equipment with respect to the multiple interference levels. The parameters of link adaptation include: RI, PMI and CQI.

Among them, RI stands for rank indication, which is an important feedback information in the LTE system, reflecting the number of data streams that the current channel can allow for downlink transmission, and is mainly used to indicate the number of layers of data transmission. PMI stands for Precoding Indication. CQI stands for Channel Quality Index, which is a measurement standard for the communication quality of a wireless channel. Generally, a larger CQI indicates a channel with high quality, and a smaller CQI indicates a channel with low quality.

After the processor 141 selects a link adaptation parameter corresponding to the one interference level for the user equipment, the user equipment selects an appropriate channel for uplink data transmission according to the link adaptation parameter.

When the user equipment communicates with the base station, the user equipment needs to determine the power of the transmitted signal so that the power of the signal when it reaches the base station remains at a level suitable for reception. There is a fixed formula for determining the transmission power of the user equipment. In the transmit power formula of the user equipment, p ₀ represents the target power value, α represents the path loss compensation coefficient, _ΔMCS represents the compensation value adopted by different modulation and coding orders, and δ represents the closed-loop power control, all of which are determined by the base station and then notified to the user equipment .

The determination of the power control parameters in the transmit power of the user equipment is related to the interference level. Therefore, the processor 141 sets multiple sets of uplink power control parameters for various interference levels.

Take the multiple interference levels as a strong interference level, a medium interference level and a weak interference level as an example. The second base station sets three sets of power control parameters according to multiple interference levels, and the user equipment has three sets of transmit power calculation formulas.

Specifically, the three sets of transmit power calculation formulas can be:

P _T1 = min{P _max , P _0,1 +α ₁ PL _DL +10log ₁₀ (M)+Δ _MCS,1 +δ ₁ };

P _T2 = min{P _max , P _0,2 +α ₂ PL _DL +10log ₁₀ (M)+Δ _MCS,2 +δ ₂ };

P _T3 =min{P _max , P _0,3 +α ₃ PL _DL +10log ₁₀ (M)+Δ _MCS,3 +δ ₃ }

Wherein, the P _T1 is a transmit power formula corresponding to a set of power control parameters determined by the strong interference level, and the transmit power of the user equipment on the time-frequency resource corresponding to the strong interference level is P _T1 . The P _T2 is a transmission power formula corresponding to a set of power control parameters determined by the medium interference level, and the transmission power of the user equipment on the time-frequency resource corresponding to the medium interference level is P _T2 . The P _T3 is a transmission power formula corresponding to a set of power control parameters determined by the weak interference level, and the transmission power of the user equipment on the time-frequency resource corresponding to the weak interference level is P _T3 .

After the processor 141 selects an uplink power control parameter corresponding to the one interference level for the user equipment, it sends the uplink power control parameter to the user equipment, so that the user equipment controls the uplink power according to the uplink power control parameter. parameter determines the transmit power.

After the processor 141 determines various link adaptation parameters and multiple sets of power control parameters for various interference levels, the processor 141 based on the correspondence between multiple interference levels and multiple time-frequency resources, when the When the processor 141 schedules the user equipment on the time-frequency resource corresponding to the one interference level, the processor 141 selects a link adaptation parameter and uplink power corresponding to the one interference level for the user equipment control parameter.

The second base station 140 also includes a receiver 142 .

The receiver 142 is configured to receive correspondences between the multiple interference levels and multiple time-frequency resources from the first base station.

It should be noted that the processor 141 and the receiver 142 shown in FIG. 14 are directly connected. In some other embodiments of the present invention, the processor 141 and the receiver 142 and other modules of the device 140 may also be connected through a bus. The bus may be an ISA (Industry Standard Architecture, industry standard architecture) bus, a PCI (Peripheral Component, external device interconnection) bus, or an EISA (Extended Industry Standard Architecture, extended industry standard architecture) bus or the like. The bus can be one or more physical lines, and when there are multiple physical lines, it can be divided into an address bus, a data bus, a control bus, and the like.

In addition, for those of ordinary skill in the art, the specific implementation of the processor 141 and the receiver 142 may refer to the foregoing embodiments, and details are not repeated here.

An embodiment of the present invention provides a second base station. The processor determines an interference level among multiple interference levels; In the resources, a time-frequency resource corresponding to the one interference level is selected for the user equipment; when the processor schedules the user equipment on the time-frequency resource corresponding to the one interference level, the scheduling unit is the The user equipment selects a link adaptive parameter and an uplink power control parameter corresponding to the one interference level. For UEs with different interference levels, if the first base station performs scheduling on a specific time-frequency resource, then the interference level to the second base station on the specific time-frequency resource is determined; furthermore, the second base station at the corresponding time When scheduling user equipment on frequency resources, link adaptation parameters and power control parameters can be determined more accurately.

It should be noted that the device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physically separated. A unit can be located in one place, or it can be distributed to multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, in the drawings of the device embodiments provided by the present invention, the connection relationship between the modules indicates that they have a communication connection, which can be specifically implemented as one or more communication buses or signal lines. It can be understood and implemented by those skilled in the art without creative effort.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be realized by means of software plus necessary general-purpose hardware. Special components, etc. to achieve. In general, all functions completed by computer programs can be easily realized by corresponding hardware, and the specific hardware structure used to realize the same function can also be varied, such as analog circuits, digital circuits or special-purpose circuit etc. However, software program implementation is a better implementation mode for the present invention in most cases. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, such as a computer floppy disk , U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random AccessMemory), magnetic disk or optical disk, etc., including several instructions to make a computer device (which can be a personal computers, servers, or network devices, etc.) to execute the methods described in various embodiments of the present invention.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (16)

1. A kind of 1. dispatching method of user equipment ascending resource, it is characterised in that including：

   First base station determines an interference level in multiple interference levels, wherein the multiple interference level represents user respectively Equipment to first base station when sending uplink signal to multiple annoyance levels of the second base station；

   Correspondence of the first base station based on multiple interference levels Yu multiple running time-frequency resources, sets in multiple running time-frequency resources for user Alternative running time-frequency resource corresponding with one interference level, wherein there is no overlapping each other for the multiple running time-frequency resource；

   First base station dispatches the user equipment on the corresponding running time-frequency resource of one interference level, correspondingly, described When dispatching other users equipment on the corresponding running time-frequency resource, second base station is the other users equipment for two base stations The parameter and uplink power control parameter of corresponding with the one interference level link circuit self-adapting of selection so that it is described other User equipment determines transmission power according to the uplink power control parameter, and selects suitable channel to carry out upstream data biography It is defeated；

   The user equipment determines that transmission power is specially according to the uplink power control parameter：According to target power value, road Offset and close-loop power control that footpath loss balancing coefficient, modulating-coding exponent number use determine the transmitting of the user equipment Power.
2. 2. according to the method described in claim 1, it is characterized in that, the first base station determines one in multiple interference levels Interference level includes：

   First base station receives the second base station of user equipment to report to the received signal quality of user equipment, and according to the reception Signal quality determines one interference level in multiple interference levels.
3. 3. according to the method described in claim 1, it is characterized in that, the first base station determines one in multiple interference levels Interference level includes：

   First base station receives one interference level that the second base station is sent, one interference level be the second base station according to What the measuring reference signals of the user equipment of second base station measurement were determined from multiple interference levels.
4. 4. method according to any one of claim 1-3, it is characterised in that in first base station in multiple interference levels Before determining an interference level, further include：

   First base station determines the correspondence of multiple interference levels and multiple running time-frequency resources；

   First base station sends the correspondence of the multiple interference level and multiple running time-frequency resources to second base station.
5. A kind of 5. dispatching method of user equipment ascending resource, it is characterised in that including：

   Second base station determines an interference level in multiple interference levels, and the multiple interference level represents other users respectively Equipment to first base station when sending uplink signal to multiple annoyance levels of the second base station；

   Correspondence of second base station based on multiple interference levels Yu multiple running time-frequency resources, sets in multiple running time-frequency resources for user Alternative running time-frequency resource corresponding with one interference level, wherein there is no overlapping each other for the multiple running time-frequency resource；

   When the user equipment is being dispatched in the second base station on the running time-frequency resource corresponding to one interference level, the second base station The parameter and uplink power control parameter of link circuit self-adapting corresponding with one interference level are selected for the user equipment, So that the user equipment determines transmission power according to the uplink power control parameter, and suitable channel is selected to carry out Row data transfer；

   The user equipment determines that transmission power is specially according to the uplink power control parameter：According to target power value, road Offset and close-loop power control that footpath loss balancing coefficient, modulating-coding exponent number use determine the transmitting of the user equipment Power.
6. 6. according to the method described in claim 5, it is characterized in that, second base station determines one in multiple interference levels Interference level includes：

   Second base station receives the second base station of user equipment to report to the received signal quality of user equipment, and according to the reception Signal quality determines one interference level in multiple interference levels；Or

   The measuring reference signals of second base station user equipment according to second base station measurement are true from multiple interference levels Fixed one interference level.
7. 7. according to the method described in claim 5, it is characterized in that, second base station determines one in multiple interference levels Interference level includes：

   Second base station receives the first base station one interference definite from multiple interference levels from the first base station It is horizontal.
8. 8. according to the method any one of claim 5-7, it is characterised in that in the second base station in multiple interference levels Before determining an interference level, further include：

   Second base station receives the correspondence of the multiple interference level and multiple running time-frequency resources from first base station.
9. 9. a kind of first base station, it is characterised in that the first base station includes：Determination unit, selecting unit, scheduling unit；

   The determination unit, for determining an interference level in multiple interference levels, wherein the multiple interference level point Not Biao Shi user equipment when sending uplink signal to first base station to multiple annoyance levels of the second base station；

   The selecting unit, for the correspondence based on multiple interference levels Yu multiple running time-frequency resources, in multiple running time-frequency resources In for user equipment select corresponding with one interference level running time-frequency resource, wherein the multiple running time-frequency resource is not deposited each other Overlapping；

   The scheduling unit, for dispatching the user equipment on the corresponding running time-frequency resource of one interference level, wherein, On the corresponding running time-frequency resource, during the second base station scheduling other users equipment, second base station for it is described other User equipment selects the parameter and uplink power control parameter of link circuit self-adapting corresponding with one interference level, so that The other users equipment determines transmission power according to the uplink power control parameter, and selects suitable channel to carry out uplink Data transfer；

   The user equipment determines that transmission power is specially according to the uplink power control parameter：According to target power value, road Offset and close-loop power control that footpath loss balancing coefficient, modulating-coding exponent number use determine the transmitting of the user equipment Power.
10. 10. first base station according to claim 9, it is characterised in that

    The determination unit, specifically for receive user equipment to report the second base station to user equipment received signal quality, And one interference level is determined in multiple interference levels according to the received signal quality.
11. 11. first base station according to claim 9, it is characterised in that

    The determination unit, the one interference level sent specifically for receiving the second base station, one interference level The second base station according to the measuring reference signals of the user equipment of second base station measurement from multiple interference levels really Fixed.
12. 12. according to claim 9-11 any one of them first base stations, it is characterised in that

    The determination unit, is additionally operable to determine the correspondence of multiple interference levels and multiple running time-frequency resources；

    The first base station further includes：Transmitting element；

    The transmitting element, for being sent to second base station, the multiple interference level is corresponding with multiple running time-frequency resources to close System.
13. 13. a kind of second base station, it is characterised in that second base station includes：Determination unit, selecting unit and scheduling unit；

    The determination unit, for determining an interference level in multiple interference levels, the multiple interference level distinguishes table Show other users equipment when sending uplink signal to first base station to multiple annoyance levels of the second base station；

    The selecting unit, for the correspondence based on multiple interference levels Yu multiple running time-frequency resources, in multiple running time-frequency resources In for user equipment select corresponding with one interference level running time-frequency resource, wherein the multiple running time-frequency resource is not deposited each other Overlapping；

    The scheduling unit, for when dispatching the user equipment on the running time-frequency resource corresponding to one interference level, The parameter and uplink power control parameter of link circuit self-adapting corresponding with one interference level are selected for the user equipment, So that the user equipment determines transmission power according to the uplink power control parameter, and suitable channel is selected to carry out Row data transfer；

    The user equipment determines that transmission power is specially according to the uplink power control parameter：According to target power value, road Offset and close-loop power control that footpath loss balancing coefficient, modulating-coding exponent number use determine the transmitting of the user equipment Power.
14. 14. the second base station according to claim 13, it is characterised in that

    The determination unit, specifically for receive user equipment to report the second base station to user equipment received signal quality, And one interference level is determined in multiple interference levels according to the received signal quality；Or

    The determination unit, specifically for the user equipment according to second base station measurement measuring reference signals from multiple One interference level is determined in interference level.
15. 15. the second base station according to claim 13, it is characterised in that

    The determination unit, specifically for receiving what the first base station was determined from multiple interference levels from the first base station One interference level.
16. 16. the second base station according to any one of claim 13-15, it is characterised in that

    Second base station, further includes receiving unit；

    The receiving unit, for receiving the correspondence of the multiple interference level and multiple running time-frequency resources from first base station.