CN106211092B - A kind of method of trunked communication system subdistrict frequency band resource allocation and base station - Google Patents

Abstract

The present invention discloses a method and a base station for cell frequency band resource allocation in a trunking communication system. The method includes: dividing the entire frequency band of the cell according to a preset frequency band type; Type information, messages carrying the RSRP _service information of the reference signal received power of the cell, and messages carrying the RSRP _neighbor information of the reference signal received power of the neighboring cell; according to the UE power type information, RSRP _service information and RSRP _neighbor information, determine the UE's Type; according to the type of the UE, determine the frequency band type corresponding to the UE; according to the frequency band type corresponding to the UE, search for idle frequency band resources to allocate to the UE. For the trunking communication system based on TD-LTE technology supporting terminals with different maximum output power, the present invention can effectively reduce the interference between high-power terminals on the same-frequency cells in the same-frequency networking scenario, and ensure that the LTE standard power trunking terminals in adjacent areas are normal communication.

Description

Method and base station for cell frequency band resource allocation in trunking communication system

technical field

The present invention relates to the field of communication technologies, in particular to a method and a base station for cell frequency band resource allocation in a trunking communication system, wherein the trunking communication system is a trunking communication system supporting terminals with different maximum output powers based on TD-LTE technology.

Background technique

Time Division Long Term Evolution (TD-LTE) technology is a new generation of broadband mobile communication wireless access technology. Compared with the wireless access technology of the communication technology (3rd-Generation, 3G) mobile communication system, it has the characteristics of high transmission rate, small transmission delay, and high QoS guarantee.

The trunking communication system is a dedicated wireless communication system developed to meet the needs of industry command and dispatch and is oriented to various industry applications. Trunking communication systems have a wide range of applications in public safety, transportation, public utilities, petrochemicals, industry and commerce, and the military. On the existing TD-LTE technology, it is the development direction of the trunking communication system to increase the characteristics of the trunking service and realize the TD-LTE broadband digital trunking communication system. The broadband digital trunking communication system based on TD-LTE technology can not only support various multimedia services of the TD-LTE mobile communication system itself, but also provide basic trunking call services and trunking multimedia services, such as voice group call, voice single call, Video group call, video single call, broadcast call, real-time video transmission, etc.

Some industrial applications require that the cluster terminal can still carry out high-speed services in the shadow area of the cell (the area caused by obstacles during the propagation of radio waves) or the edge of the cell, and the quality of service of the cluster terminal must be guaranteed. On the premise of not changing the existing network deployment, the maximum output power of user equipment (User Equipment, UE) can be increased to obtain higher data throughput. At present, the maximum output power of the existing trunking terminal in the broadband digital trunking communication system based on the TD-LTE technology follows the Long Term Evolution (LTE) formulated by the 3rd Generation Partnership Project (3GPP) organization. According to the agreement, the currently defined requirement for a terminal of power level 3 is that the maximum output power under any transmission bandwidth within the channel bandwidth is 23 dBm. Such a terminal is called an LTE standard power cluster terminal. In order to ensure that the trunking terminal located in the shadow area of the cell or at the edge of the cell can still perform high-speed services, the broadband digital trunking communication system based on TD-LTE technology needs to add a trunking terminal with a maximum output power greater than the maximum output power specified by the LTE standard. Such terminals are called high-power cluster terminals. For example, the maximum output power of a high-power trunking terminal under any transmission bandwidth within the channel bandwidth is 33dBm. In this way, in the broadband digital trunking communication system based on the TD-LTE technology, there will be terminals with different maximum output powers (LTE standard power trunking terminals and high-power trunking terminals).

In LTE systems, inter-cell interference suppression is usually performed in conjunction with power control or resource allocation. The inter-cell interference suppression scheme combined with resource allocation can reduce the level of inter-cell interference to a certain extent. For example, Fractional Frequency Reuse (FFR) and Soft Frequency Reuse (SFR) schemes are proposed in LTE. The principle of FFR is to prevent the mutual interference of cell-edge users by setting the cell-disabled frequency band; the principle of SFR is to avoid the mutual interference of cell-edge users by allocating different frequency bands and power to different adjacent cell-edge users. These solutions are essentially based on frequency band pre-planning to disable part of the frequency resources in the cell for edge users, so as to avoid inter-cell interference.

According to the needs of industrial users, it is necessary to add a high-power trunking terminal to the broadband digital trunking communication system based on TD-LTE technology, but the existing LTE protocol does not support terminals of this power level. For a broadband digital trunking communication system based on TD-LTE technology that supports terminals with different maximum output powers (LTE standard power trunking terminals and high-power trunking terminals), in the same-frequency networking scenario, the maximum transmit power of high-power trunking terminals is higher than that of LTE. The higher the standard power of the cluster terminal, the higher-order modulation and coding method can be used to improve the throughput and spectral efficiency of the user. However, high-power cluster terminals transmit with very high power, which may cause severe inter-cell interference and deteriorate the service quality at the cell edge. For example, because the cell-edge users of the LTE standard power cluster terminal are far away from the serving base station, the power reception of useful signals is lower, so they are more susceptible to interference; In the process of uplink data transmission, it is easier to cause interference to neighboring cells. Therefore, for a broadband digital trunking communication system based on TD-LTE technology that supports terminals with different maximum output powers, it is necessary to urgently solve the problem of inter-cell interference on the same frequency caused by terminals with different maximum output powers, especially the introduction of high-power terminals. Larger intra-frequency inter-cell interference, how to reduce intra-frequency inter-cell interference to ensure the normal operation of LTE standard power cluster terminals in adjacent cells.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is that for a broadband digital trunking communication system based on TD-LTE technology that supports terminals with different maximum output powers (LTE standard power trunking terminals and high-power trunking terminals), in the same-frequency networking scenario, inter-cell interference serious problem.

To this end, in a first aspect, the present invention provides a method for cell frequency band resource allocation in a trunking communication system, including:

Divide the entire frequency band of the cell according to the preset frequency band type;

Receive the message that carries the UE power type information, the message that carries the RSRP _service information of the reference signal received power of the cell, and the message that carries the RSRP _neighbor information of the reference signal received power of the neighboring cell reported by the user equipment UE of the cell; wherein, the UE power types include: high power and LTE standard power;

Determine the type of the UE according to the UE power type information, RSRP _service information and RSRP _neighbor information;

According to the type of the UE, determine the frequency band type corresponding to the UE;

According to the frequency band type corresponding to the UE, search for idle frequency band resources and allocate them to the UE.

Optionally, dividing the entire frequency band of the cell according to the preset frequency band type, including:

Divide the entire frequency band of the cell into reserved frequency bands, edge frequency bands, center frequency bands and forbidden frequency bands;

Wherein, the reserved frequency band is strictly orthogonal to the reserved frequency band of the adjacent cell, and the edge frequency band is strictly orthogonal to the edge frequency band of the adjacent cell;

Wherein, the frequency band position of the forbidden frequency band is the frequency band position of the reserved frequency band of the adjacent cell;

Wherein, the center frequency band is the frequency band remaining after removing the reserved frequency band, the edge frequency band and the forbidden frequency band in the whole frequency band of the own cell.

Optionally, determining the type of the UE according to the UE power type information, RSRP _service information and RSRP _neighbor information, including:

Determine whether the difference between the RSRP _service and the RSRP _neighbor is greater than a preset edge UE decision threshold RSRP_thresh;

If so, determine that the UE is an edge UE;

Otherwise, determine that the UE is the central UE;

The types of the UE include: high-power edge UE, high-power center UE, LTE standard power edge UE, and LTE standard power center UE.

Optionally, determining the frequency band type corresponding to the UE according to the type of the UE, including:

If the UE is a high-power edge UE, determining that the frequency band type corresponding to the UE is a reserved frequency band;

If the UE is a high-power center UE, determine that the frequency band types corresponding to the UE are reserved frequency bands and edge frequency bands;

If the UE is an LTE standard power edge UE, determine that the frequency band types corresponding to the UE are reserved frequency bands and edge frequency bands;

If the UE is an LTE standard power center UE, it is determined that the frequency band types corresponding to the UE are reserved frequency bands, edge frequency bands and center frequency bands.

Optionally, according to the frequency band type corresponding to the UE, searching for idle frequency band resources and assigning them to the UE, including:

determining the priority of the UE according to the correspondence between the preset priority and the type of the UE;

According to the priority of the UE and the frequency band type corresponding to the UE, find an idle frequency band resource and allocate it to the UE.

Optionally, the correspondence between the preset priority and the type of the UE includes:

The priorities from high to low are: high-power edge UE, high-power center UE, LTE standard power edge UE, and LTE standard power center UE.

Optionally, according to the priority of the UE and the frequency band type corresponding to the UE, searching for idle frequency band resources to allocate to the UE, including:

Allocate idle frequency band resources in the reserved frequency band to high-power edge UEs;

After allocating the frequency band resources of the high-power edge UE, allocate the idle frequency band resources in the reserved frequency band and the edge frequency band resources to the high-power center UE;

After allocating the frequency band resources of the high-power center UE, allocate the reserved frequency band and idle frequency band resources in the edge frequency band to the LTE standard power edge UE;

After the frequency band resources of the LTE standard power edge UE are allocated, the reserved frequency band, the edge frequency band and the idle frequency band resources in the center frequency band are allocated to the LTE standard power center UE.

In a second aspect, the present invention also provides a base station, including:

a frequency band dividing unit, configured to divide the entire frequency band of the cell according to a preset frequency band type;

The message receiving unit is used to receive the message carrying the UE power type information reported by the user equipment UE of the cell, the message carrying the RSRP _service information of the reference signal received power of the cell, and the message carrying the RSRP _neighbor information of the reference signal received power of the neighboring cell. message; wherein, the UE power type includes: high power and LTE standard power;

A UE type determination unit, configured to determine the type of the UE according to the UE power type information, RSRP _service information and RSRP _neighbor information received by the message receiving unit;

a frequency band type determination unit, configured to determine a frequency band type corresponding to the UE according to the type of the UE determined by the UE type determination unit;

A frequency band resource allocation unit, configured to search for an idle frequency band resource to allocate to the UE according to the frequency band type corresponding to the UE determined by the frequency band type determination unit.

Optionally, the frequency band dividing unit is specifically configured to divide the entire frequency band of the cell into a reserved frequency band, an edge frequency band, a center frequency band and a forbidden frequency band.

Optionally, the UE type determination unit is specifically configured to judge whether the difference between the RSRP _service and the RSRP _neighbor is greater than a preset edge UE judgment threshold RSRP_thresh;

When it is determined that the difference between the RSRP _service and the RSRP _neighbor is greater than a preset edge UE decision threshold RSRP_thresh, determine that the UE is an edge UE;

When it is determined that the difference between the RSRP _service and the RSRP _neighbor is not greater than a preset edge UE decision threshold RSRP_thresh, determine that the UE is a central UE;

The types of the UE include: high-power edge UE, high-power center UE, LTE standard power edge UE, and LTE standard power center UE.

Compared with the prior art, the method and base station for cell frequency band resource allocation in a trunking communication system of the present invention divide the full frequency band of the cell into reserved frequency bands, edge frequency bands, center frequency bands and forbidden frequency bands, and determine the UE according to the information reported by the UE. type, and the frequency band resources configured and used for the UE according to the UE type, can effectively reduce the interference between high-power terminals on the same frequency cell, and ensure the normal communication of LTE standard power cluster terminals in adjacent cells.

Further, the above-mentioned method for allocating cell frequency band resources in the trunking communication system and the base station can perform priority sorting in combination with UE types during resource allocation, select UEs one by one according to the sorting order, and learn the available UEs according to the UE type of the selected UE. The type of frequency band resource. Finding idle and suitable resources on the frequency band resource and assigning it to the selected UE can effectively reduce the interference between high-power terminals on the same frequency cell and ensure the normal communication of LTE standard power cluster terminals in adjacent cells.

Description of drawings

1 is a flowchart of a method for allocating cell frequency band resources in a trunking communication system according to an embodiment of the present invention;

FIG. 2 is a structural diagram of a base station according to an embodiment of the present invention.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are disclosed. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in FIG. 1 , this embodiment discloses a method for allocating cell frequency band resources in a trunking communication system, and the method may include the following steps S1 to S5:

S1. According to a preset frequency band type, divide the entire frequency band of the cell;

S2. Receive the message that carries the UE power type information, the message that carries the RSRP _service information of the reference signal received power of the cell, and the message that carries the RSRP _neighbor information of the reference signal received power of the neighboring cell reported by the user equipment UE of the cell; wherein, The UE power types include: high power and LTE standard power;

S3, according to the UE power type information, RSRP _service information and RSRP _neighbor information, determine the type of the UE;

S4, according to the type of the UE, determine the frequency band type corresponding to the UE;

S5. According to the frequency band type corresponding to the UE, search for an idle frequency band resource to allocate to the UE.

In a specific example, step S1 includes: dividing the entire frequency band of the cell into a reserved frequency band, an edge frequency band, a center frequency band and a forbidden frequency band;

The sum of the reserved frequency band and the edge frequency band does not exceed 1/3 of the full frequency band, and the reserved frequency band is strictly orthogonal to the reserved frequency band of the neighboring cell, and the edge frequency band is strictly orthogonal to the edge frequency band of the neighboring cell. pay;

Wherein, the frequency band position of the forbidden frequency band is the frequency band position of the reserved frequency band of the adjacent cell;

Wherein, the center frequency band is the frequency band remaining after removing the reserved frequency band, the edge frequency band and the forbidden frequency band in the whole frequency band of the own cell.

For example, taking three cells or sectors as a cluster as an example, the specific method of frequency band planning is given below:

A physical resource block (Physical Resource Block, PRB) is used as the minimum granularity of frequency band resource planning. According to the system bandwidth, the total number of system PRBs Ntotal in this cell can be obtained;

The range of PRB numbers occupied by the reserved frequency band of cell or sector i is:

where α _i and β _i are the proportions of the reserved frequency bands and edge frequency bands in the cell or sector i, respectively, in the total frequency band, and Wherein, i%3=0, i%3=1, and i%3=2 respectively indicate that the cell or sector i is numbered 0, 1, and 2 in the cell or sector cluster.

The range of PRB numbers occupied by the edge band of cell or sector i is:

The range of PRB numbers occupied by the forbidden frequency band of cell or sector i is:

The PRB numbering range occupied by the center frequency band of the cell or sector i is the PRB remaining in the whole frequency band after removing the PRB numbering range occupied by the reserved frequency band, the edge frequency band and the forbidden frequency band.

In a specific example, step S3 includes:

Determine whether the difference between the RSRP _service and the RSRP _neighbor is greater than a preset edge UE decision threshold RSRP_thresh;

If so, determine that the UE is an edge UE;

Otherwise, determine that the UE is the central UE;

The types of the UE include: high-power edge UE, high-power center UE, LTE standard power edge UE, and LTE standard power center UE.

In a specific example, step S4 includes:

If the UE is a high-power edge UE, determining that the frequency band type corresponding to the UE is a reserved frequency band;

If the UE is a high-power center UE, determine that the frequency band types corresponding to the UE are reserved frequency bands and edge frequency bands;

If the UE is an LTE standard power edge UE, determine that the frequency band types corresponding to the UE are reserved frequency bands and edge frequency bands;

If the UE is an LTE standard power center UE, it is determined that the frequency band types corresponding to the UE are reserved frequency bands, edge frequency bands and center frequency bands.

In a specific example, step S5 includes steps S51 and S52 not shown in FIG. 1 :

S51. Determine the priority of the UE according to the correspondence between the preset priority and the type of the UE;

S52. According to the priority of the UE and the frequency band type corresponding to the UE, search for an idle frequency band resource to allocate to the UE.

In a specific example, the corresponding relationship between the preset priority in step S51 and the type of the UE includes:

The priorities from high to low are: high-power edge UE, high-power center UE, LTE standard power edge UE, and LTE standard power center UE.

In a specific example, step S52 includes:

Allocate idle frequency band resources in the reserved frequency band to high-power edge UEs;

After allocating the frequency band resource of described high-power edge UE, allocate reserved frequency band and idle frequency band resource in edge frequency band resource to high-power center UE;

After allocating the frequency band resources of the high-power center UE, allocate the reserved frequency band and idle frequency band resources in the edge frequency band to the LTE standard power edge UE;

After the frequency band resources of the LTE standard power edge UE are allocated, the reserved frequency band, the edge frequency band and the idle frequency band resources in the center frequency band are allocated to the LTE standard power center UE.

As shown in FIG. 2, this embodiment discloses a base station, which may include the following units: a frequency band dividing unit 21, a message receiving unit 22, a UE type determining unit 23, a frequency band type determining unit 24, and a frequency band resource allocation unit 25;

a frequency band dividing unit 21, configured to divide the entire frequency band of the cell according to a preset frequency band type;

The message receiving unit 22 is configured to receive the message that carries the UE power type information, the message that carries the RSRP _service information of the reference signal received power of the local cell, and the message that carries the RSRP _neighbor information of the reference signal received power of the neighboring cell reported by the user equipment UE of the local cell message; wherein, the UE power type includes: high power and LTE standard power;

The UE type determination unit 23 is configured to determine the type of the UE according to the UE power type information, the RSRP _service information and the RSRP _neighbor information received by the message receiving unit 22;

a frequency band type determination unit 24, configured to determine a frequency band type corresponding to the UE according to the type of the UE determined by the UE type determination unit 23;

The frequency band resource allocation unit 25 is configured to search for an idle frequency band resource to allocate to the UE according to the frequency band type corresponding to the UE determined by the frequency band type determination unit 24 .

In a specific example, the frequency band dividing unit 21 is specifically configured to divide the entire frequency band of the cell into a reserved frequency band, an edge frequency band, a center frequency band and a forbidden frequency band.

In a specific example, the UE type determination unit 23 is specifically configured to judge whether the difference between the RSRP _service and the RSRP _neighbor is greater than a preset edge UE judgment threshold RSRP_thresh;

When it is determined that the difference between the RSRP _service and the RSRP _neighbor is greater than a preset edge UE decision threshold RSRP_thresh, determine that the UE is an edge UE;

When it is determined that the difference between the RSRP _service and the RSRP _neighbor is not greater than a preset edge UE decision threshold RSRP_thresh, determine that the UE is a central UE;

The types of the UE include: high-power edge UE, high-power center UE, LTE standard power edge UE, and LTE standard power center UE.

It should be noted that the base station in this embodiment can perform the steps in the foregoing method embodiments, and details are not repeated in this embodiment.

The method and base station for cell frequency band resource allocation in a trunking communication system of the present invention divide the full frequency band of the cell into reserved frequency bands, edge frequency bands, center frequency bands and forbidden frequency bands, and determine the UE type according to the information reported by the UE, and according to the UE type The frequency band resources configured and used by the UE can effectively reduce the interference between high-power terminals on the same frequency cell, and ensure the normal communication of the LTE standard power cluster terminals in the adjacent cells.

Further, the above-mentioned method for allocating cell frequency band resources in the trunking communication system and the base station can perform priority sorting in combination with UE types during resource allocation, select UEs one by one according to the sorting order, and learn the available UEs according to the UE type of the selected UE. The type of frequency band resource. Finding idle and suitable resources on the frequency band resource and assigning it to the selected UE can effectively reduce the interference between high-power terminals on the same frequency cell and ensure the normal communication of LTE standard power cluster terminals in adjacent cells.

It will be understood by those skilled in the art that although some of the embodiments described herein include certain features, but not others, included in other embodiments, that combinations of features of the different embodiments are intended to be within the scope of the present invention And form different embodiments.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope of the appended claims within the limits of the requirements.

Claims (7)

1. A method for allocating cell band resources in a trunking communication system, comprising:

dividing the full frequency band of the cell according to the preset frequency band type;

receiving a message carrying UE power type information reported by user equipment UE of the cell, and a Reference Signal Received Power (RSRP) of the cell_serviceInformation message and Reference Signal Received Power (RSRP) carrying adjacent cell_neighborA message of information; wherein the UE power types include: high power and LTE standardsPower;

according to the UE power type information and RSRP_serviceInformation and RSRP_neighborInformation, determining a type of the UE;

determining a frequency band type corresponding to the UE according to the type of the UE;

searching idle frequency band resources to be allocated to the UE according to the frequency band type corresponding to the UE; wherein,

the UE power type information and RSRP are obtained_serviceInformation and RSRP_neighborInformation to determine a type of the UE, comprising:

judging the RSRP_serviceAnd the RSRP_neighborWhether the difference is greater than a preset edge UE judgment threshold RSRP _ thresh or not; if so, determining that the UE is an edge UE; otherwise, determining the UE as the central UE; wherein the type of the UE comprises: the system comprises a high-power edge UE, a high-power center UE, an LTE standard power edge UE and an LTE standard power center UE;

the determining, according to the type of the UE, a band type corresponding to the UE includes:

if the UE is a high-power edge UE, determining that the frequency band type corresponding to the UE is a reserved frequency band; if the UE is a high-power center UE, determining the frequency band type corresponding to the UE as a reserved frequency band and an edge frequency band; if the UE is LTE standard power edge UE, determining that the frequency band type corresponding to the UE is a reserved frequency band and an edge frequency band; and if the UE is the LTE standard power center UE, determining that the frequency band types corresponding to the UE are a reserved frequency band, an edge frequency band and a central frequency band.

2. The method according to claim 1, wherein the dividing the full frequency band of the cell according to the predetermined frequency band type includes:

dividing the full frequency band of the cell into a reserved frequency band, an edge frequency band, a central frequency band and a forbidden frequency band;

the reserved frequency band is strictly orthogonal to the reserved frequency band of the adjacent cell, and the edge frequency band is strictly orthogonal to the edge frequency band of the adjacent cell;

the frequency band position of the forbidden frequency band is the frequency band position of a reserved frequency band of an adjacent cell;

the central frequency band is a frequency band left by removing the reserved frequency band, the marginal frequency band and the forbidden frequency band from the whole frequency band of the local cell.

3. The method of claim 1, wherein the searching for an idle band resource to allocate to the UE according to the band type corresponding to the UE comprises:

determining the priority of the UE according to the corresponding relation between the preset priority and the type of the UE;

and searching idle frequency band resources to be allocated to the UE according to the priority of the UE and the frequency band type corresponding to the UE.

4. The method of claim 3, wherein the correspondence between the preset priority and the type of the UE comprises:

the priority is from high to low: the system comprises a high-power edge UE, a high-power center UE, an LTE standard power edge UE and an LTE standard power center UE.

5. The method of claim 4, wherein the searching for an idle bandwidth resource to allocate to the UE according to the priority of the UE and the bandwidth type corresponding to the UE comprises:

allocating idle frequency band resources in a reserved frequency band to the high-power edge UE;

after the frequency band resource of the high-power edge UE is allocated, allocating idle frequency band resources in a reserved frequency band and edge frequency band resources to the high-power center UE;

after the frequency band resource of the high-power center UE is allocated, allocating the spare frequency band resource in the reserved frequency band and the edge frequency band to the LTE standard power edge UE;

after allocating the band resources of the LTE standard power edge UE, allocating free band resources in a reserved band, an edge band and a center band to the LTE standard power center UE.

6. A base station, comprising:

the frequency band dividing unit is used for dividing the full frequency band of the cell according to the preset frequency band type;

a message receiving unit, configured to receive a message carrying UE power type information and reported by a UE in a local cell, the message carrying reference signal received power RSRP in the local cell_serviceInformation message and Reference Signal Received Power (RSRP) carrying adjacent cell_neighborA message of information; wherein the UE power types include: high power and LTE standard power;

a UE type determining unit for determining the UE power type information and RSRP received by the message receiving unit_serviceInformation and RSRP_neighborInformation, determining a type of the UE; is particularly used for judging the RSRP_serviceAnd the RSRP_neighborWhether the difference is greater than a preset edge UE judgment threshold RSRP _ thresh or not; if so, determining that the UE is an edge UE; otherwise, determining the UE as the central UE; wherein the type of the UE comprises: the system comprises a high-power edge UE, a high-power center UE, an LTE standard power edge UE and an LTE standard power center UE;

a band type determining unit, configured to determine a band type corresponding to the UE according to the UE type determined by the UE type determining unit; specifically, if the UE is a high-power edge UE, determining that a frequency band type corresponding to the UE is a reserved frequency band; if the UE is a high-power center UE, determining the frequency band type corresponding to the UE as a reserved frequency band and an edge frequency band; if the UE is LTE standard power edge UE, determining that the frequency band type corresponding to the UE is a reserved frequency band and an edge frequency band; if the UE is an LTE standard power center UE, determining that the frequency band types corresponding to the UE are a reserved frequency band, an edge frequency band and a central frequency band;

and the frequency band resource allocation unit is used for searching the idle frequency band resource to allocate to the UE according to the frequency band type corresponding to the UE determined by the frequency band type determination unit.

7. The base station of claim 6, wherein the frequency band dividing unit is specifically configured to divide a full frequency band of the local cell into a reserved frequency band, an edge frequency band, a center frequency band, and a forbidden frequency band.