WO2014036850A1

WO2014036850A1 - Method and base station for switching uplink and downlink ratio

Info

Publication number: WO2014036850A1
Application number: PCT/CN2013/077450
Authority: WO
Inventors: 韩波
Original assignee: 华为技术有限公司
Priority date: 2012-09-07
Filing date: 2013-06-19
Publication date: 2014-03-13
Also published as: CN103686879B; CN103686879A

Abstract

Disclosed are a method and a base station for switching an uplink and downlink ratio. The method comprises: determining that this cell needs to be switched to a first target ratio; determining, according to ratio interference information, whether interference brought by the switching of this cell to the first target ratio can be tolerated, the ratio interference information indicating the inter-cell interference condition corresponding to a ratio combination of this cell and a neighboring cell of this cell; and if the interference brought by the switching of this cell to the first target ratio can be tolerated, switching this cell to the first target ratio. In the method and the base station for switching the uplink and downlink ratio, when it is determined, according to ratio interference information, that interference brought by the switching of this cell to a target ratio can be tolerated, this cell is switched to the target ratio, the flexibility of the ratio of a subframe can be improved and adaptation to the change of the service traffic can be achieved, thereby improving the system performance.

Description

Method and base station for switching between uplink and downlink ratios This application claims priority to Chinese patent application filed on September 07, 2012 by the Chinese Patent Office, application number 201210328417., and the invention titled "Method and Base Station for Uplink and Downlink Ratio Switching" The entire contents of which are incorporated herein by reference. TECHNICAL FIELD The present invention relates to the field of communications, and more particularly to a method and base station for uplink-downlink ratio switching.

BACKGROUND The Long Term Evolution (LTE) technology can be divided into a Time Division Duplex (Time Division Duplex) and a Frequency Division Duplex. Called the "FDD" mode. In the TDD mode, the uplink and downlink use the same working frequency band, and the uplink and downlink signals are transmitted at different time intervals, and there is a guard interval between the uplink and the downlink. The FDD mode refers to the uplink and downlink using different working frequency bands. At the same time, the uplink and downlink signals are transmitted on different frequency carriers, and there is a protection bandwidth between the uplink and the downlink. Common TDD systems include 3G Time Division-Synchronous Code Division Multiple Access (TC-SCDMA) system and 4G Time Division-LTE (Time Division-LTE) -LTE") system.

A radio frame in TDD has a length of 10 ms and contains 10 subframes in a special subframe and a regular subframe, each subframe being 1 ms. The special subframe is divided into three slots: a Downlink Pilot Time Slot (DwPTS), a Guard Period ("G"), and an Uplink Pilot Slot. (Uplink Pilot Time Slot, called "UpPTS"), where DwPTS is used to transmit the primary synchronization signal (Primary Synchronization Signal, called "PSS") / Physical Downlink Control Channel (Physical Downlink Control Channel, called "PDCCH"" ) I Physical Hybrid ARQ Indicator Channel (Physical Hybrid ARQ Indicator Channel) (Physical Control Format Indicator Channel (PCFICH)) / Physical Downlink Shared Channel (Physical Downlink Shared Channel) Called "PDSCH", etc., GP is used for the guard interval between downlink and uplink, and UpPTS is used for transmitting sounding reference signal (Sounding Reference Signal, called "SRS") / Physical Random Access Channel (Physical Random Access Channel) , the tube is called "PRACH"). The regular subframe includes an uplink subframe and a downlink subframe, and is used for transmitting uplink/downlink control signaling, service data, and the like. Wherein, in one radio frame, two special subframes may be configured in subframe #1 and subframe #6, and the DwPTS slots in subframe #0 and subframe #5 and the special subframe are always used as downlink transmission, The UpPTS slot in frame #2 and the special subframe is always used for uplink transmission, and other subframes can be used for uplink transmission or downlink transmission depending on the configuration.

The time slot division of the uplink and the downlink is usually fixed. Generally, the network device broadcasts in the cell according to the manner in the network planning process, and the accessed user equipment (User Equipment, called "UE") receives the broadcast message. The subframe configuration of the UE is kept consistent with the cell. In general, it is necessary to keep the matching ratio of each adjacent interval consistent. Otherwise, the problem of interference will be very fatal, resulting in severe interference between cells and failure to work properly. In the case of switching the ratio without affecting the service quality of the area and the neighboring area (Quality of Service, referred to as "QoS"), the current uplink and downlink ratios are matched to the current traffic volume to the greatest extent. The capacity of the cell gains gain.

Wireless Backhaal technology is a wireless backhaul technology that solves the backhaul problem of the base station at a low cost. The backhaul base station (Backhual eNodeB, called "BeNB") and the backhaul UE (backhual UE) "BUE" as a backhaul network element is transparent to the core network, base station, and UE, and functions to wirelessly transmit the UE's signal back to the core network, and avoids the wired deployment from the base station to the core network. , greatly reducing construction costs and construction period. It also makes the deployment of the base station more flexible. Since the wireless backhaul system is used for backhaul, the application scenario is coverage and enhancement, and the number of co-frequency neighbors is small, and the BUE and BeNB use directional antennas, and the interference will not As strong as a macro station, this makes it very feasible to use dynamic ratios on the backhaul network. The interference problem is the key factor that can not match the current ratio between cells. The existing scheme is to set the subframes in different directions as empty subframes to avoid interference. This method has a great influence on the traffic volume. The purpose of the ratio adaptation is to improve the performance of the entire system. If a null subframe is used, it is contrary to the purpose, and the performance of the entire system cannot be improved, and if it is a high frequency ratio. The handover requires a large amount of signaling overhead to notify the neighboring area to set an empty subframe. In addition, since the X2 interface signaling delay may be greater than the dynamic switching period, it is difficult to ensure real-time performance.

SUMMARY OF THE INVENTION Embodiments of the present invention provide a method and a base station for uplink-downlink ratio switching, which can improve system performance.

The first aspect provides a method for switching between uplink and downlink ratios, where the method includes: determining that the cell needs to switch to the first target ratio; determining, according to the ratio interference information, that the local cell switches to the first target ratio The interference caused by the interference can be tolerated, and the ratiometric interference information indicates the inter-cell interference situation corresponding to the ratio combination of the local cell and the neighboring cell of the local cell; if the local cell switches to the first target ratio The interference can be tolerated, and the local cell is switched to the first target ratio.

In a first possible implementation manner, the method further includes: if the interference that the local cell switches to the first target ratio cannot be tolerated, sending, to the base station of the neighboring cell, a common handover to the first target a request message of the ratio; a response message sent by the base station receiving the neighboring area indicating whether the first target ratio can be jointly switched; if the neighboring area can jointly switch to the first target ratio, the local cell and the same The neighboring zone switches to the first target ratio.

In a second possible implementation manner, in combination with the first aspect or the first possible implementation manner of the first aspect, the method further includes: inter-cell interference according to the traversal of the matching ratio between the local cell and the neighboring cell In case, the ratio interference information is established.

In a third possible implementation manner, in combination with the second possible implementation manner of the first aspect, The ratio interference information is established according to the interference between the cell and the neighboring cell in the circumstance of the various ratios, and the specific ratio is: for each ratio combination of the local cell and the neighboring cell, receiving in uplink a test sequence sent by the user equipment UE of the local cell in an uplink subframe to determine whether the neighboring cell can tolerate interference to the local cell, and send a test sequence to the UE on the downlink subframe in the downlink to facilitate the UE to determine Whether the interference of the neighboring cell to the local cell can be tolerated; if the interference of the neighboring cell to the local cell can be tolerated, and the interference of the neighboring cell to the neighboring cell can be tolerated, the cell corresponding to each matching combination is set. The inter-cell interference is tolerable if the interference of the neighboring cell to the local cell is not tolerated, or the interference of the local cell to the neighboring cell is not tolerated. .

In a fourth possible implementation, in combination with the second or third possible implementation manner of the first aspect, the method further includes: updating the proportioning interference information when an update period arrives.

In a fifth possible implementation manner, in combination with the fourth possible implementation manner of the first aspect, the ratio interference information is updated, and the specific implementation is: for each ratio combination of the local cell and the neighboring area, A test sequence sent by the UE of the local cell to transmit the previous one or two symbols of the uplink broadcast single frequency network ("MBSF") subframe to determine the neighboring cell pair Whether the interference of the local cell can be tolerated, and sending a test sequence to the UE on the first or second symbols of the downlink MBSF subframe in the downlink, so that the UE determines whether the interference of the neighboring cell to the local cell can be tolerated; If the interference of the neighboring cell to the local cell can be tolerated, and the interference of the local cell to the neighboring cell can be tolerated, the inter-cell interference corresponding to each matching ratio combination is updated to be tolerable; if the neighboring cell pair The interference of the local cell cannot be tolerated, or the interference of the local cell to the neighboring cell cannot be tolerated, and the interference between cells corresponding to each combination of the ratios is updated to be intolerable.

In a sixth possible implementation, in combination with the first, second, third, fourth or fifth possible implementation of the first aspect or the first aspect, the method further comprises: receiving the a request message that is jointly switched by the base station of the neighboring cell to the second target ratio; if the local cell is not in the resource block RB restricted state, and the second target ratio does not affect the quality of service of the local cell The QoS satisfaction rate is sent to the base station of the neighboring area to send a response message indicating that the second target ratio can be jointly switched; and the local cell and the neighboring area are jointly switched to the second target ratio.

In a second aspect, a base station is provided, where the base station includes: a determining module, configured to determine that the local cell needs to be handed over to the first target ratio, and, according to the ratio interference information, determining that the local cell switches to the first target Whether the interference caused by the ratio is tolerable, the ratiometric interference information indicates interference between the cells corresponding to the ratio combination of the neighboring cell of the local cell and the neighboring cell of the local cell; and the executing module is configured to switch to the first cell if the cell is switched to the cell If the interference caused by a target ratio can be tolerated, the local cell is switched to the first target ratio.

In a first possible implementation manner, the base station further includes: a sending module, configured to: if the interference that the local cell switches to the first target ratio cannot be tolerated, send a common handover to the base station of the neighboring cell a request message of the first target ratio; a receiving module, configured to receive, by the base station of the neighboring area, a response message indicating whether the first target ratio can be jointly switched; the executing module is further configured to: if the neighboring area can Switching to the first target ratio together, the local cell and the neighboring area are jointly switched to the first target ratio.

In a second possible implementation manner, in combination with the second aspect or the first possible implementation manner of the second aspect, the base station further includes: a creating module, configured to traverse various ratios according to the local cell and the neighboring cell In the case of interference between cells, the ratio interference information is established.

In a third possible implementation manner, in combination with the second possible implementation manner of the second aspect, the creating module is specifically configured to receive, when uplinking, each ratio combination of the local cell and the neighboring cell. a test sequence sent by the UE of the user equipment in the uplink subframe to determine whether the neighboring cell can tolerate interference to the local cell, and send a test sequence to the UE in the downlink subframe in the downlink to facilitate the UE to determine the Whether the interference of the neighboring cell to the local cell can be tolerated; if the interference of the neighboring cell to the local cell can be tolerated, and the interference of the local cell to the neighboring cell can be tolerated, the inter-cell corresponding to each matching ratio combination is set. The interference is tolerable; if the interference of the neighboring cell to the local cell is not tolerated, or the interference of the local cell to the neighboring cell is not tolerated, the inter-cell interference corresponding to each matching ratio combination is not tolerated. In a fourth possible implementation, in combination with the second or the third possible implementation of the second aspect, the base station further includes: an updating module, configured to update the proportioning interference information when an update period arrives.

In a fifth possible implementation manner, in combination with the fourth possible implementation manner of the second aspect, the updating module is specifically configured to: when the update period arrives, for each ratio combination of the local cell and the neighboring cell, Receiving, in uplink, a test sequence sent by the UE of the local cell on the first or second symbols of the uplink multicast single frequency network MBSF subframe to determine whether the interference of the neighboring cell to the local cell can be tolerated. Sending a test sequence to the UE on the first one or two symbols of the downlink MBSF subframe, so that the UE determines whether the neighboring zone can tolerate interference to the local cell; if the neighboring zone interferes with the local cell, it can tolerate If the interference of the neighboring cell to the neighboring cell can be tolerated, the inter-cell interference corresponding to each matching combination is updated to be tolerable; if the neighboring cell does not tolerate interference to the local cell, or the cell If the interference to the neighboring area is not tolerated, the inter-cell interference corresponding to each of the ratio combinations is updated to be intolerable.

In a sixth possible implementation, in combination with the first, second, third, fourth or fifth possible implementation manner of the second aspect or the second aspect, the receiving module is further configured to receive a request message that is jointly switched by the base station of the neighboring cell to the second target ratio; the sending module is further configured to: if the local cell is not in the resource block RB restricted state, and the second target ratio does not affect the local cell The service quality QoS satisfaction rate is sent to the base station of the neighboring area to send a response message indicating that the second target ratio can be jointly switched; the executing module is further configured to switch the local cell and the neighboring area to the second Target ratio.

The method for the uplink-downlink ratio switching and the base station according to the foregoing technical solution, according to the ratiometric interference information, when the interference caused by the handover of the cell to the target ratio can be tolerated, the local cell is switched to the The target ratio can improve the matching flexibility of the subframe and dynamically adapt to the change of the traffic, thereby improving system performance.

DRAWINGS In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.

FIG. 1 is a schematic flowchart of a method for uplink-downlink ratio switching according to an embodiment of the present invention. FIG. 2 is another schematic flowchart of a method for uplink-downlink ratio switching according to an embodiment of the present invention.

FIG. 3 is still another schematic flowchart of a method for uplink-downlink ratio switching according to an embodiment of the present invention.

4 is a schematic diagram of a wireless backhaul system in accordance with an embodiment of the present invention.

FIG. 5 is still another schematic flowchart of a method for uplink-downlink ratio switching according to an embodiment of the present invention.

FIG. 6 is still another schematic flowchart of a method for uplink-downlink ratio switching according to an embodiment of the present invention.

Figure Ί is a schematic block diagram of a base station according to an embodiment of the present invention.

FIG. 8 is another schematic block diagram of a base station according to an embodiment of the present invention.

FIG. 9 is still another schematic block diagram of a base station according to an embodiment of the present invention.

FIG. 10 is still another schematic block diagram of a base station according to an embodiment of the present invention.

11 is a schematic block diagram of a base station according to another embodiment of the present invention.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments. . All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall be protected by the present invention. The scope.

It should be understood that the technical solution of the embodiment of the present invention can be applied to various communication systems with time-sharing ratio, for example: Time Division-Synchronous Code Division Multiple Access (TC-SCDMA) System, LTE time division duplex (Time Division Duplex, called "TDD").

It should also be understood that in the embodiment of the present invention, a user equipment (User Equipment, referred to as "UE") may be referred to as a terminal (Terminal), a mobile station (Mobile Station, a cartridge is referred to as "MS"), and a mobile terminal ( Mobile Terminal), etc., the user equipment can communicate with one or more core networks via a Radio Access Network ("RAN"), for example, the user equipment can be a mobile phone (or "cellular" "Telephone", a computer with a mobile terminal, etc., for example, the user device can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges voice and/or data with the wireless access network.

In the embodiment of the present invention, the base station may be a base station (NodeB, a cylinder called "NB") in the TD-SCMDA, or may be an evolved base station in the LTE (Evolutional Node B, which is called "ENB or e-NodeB". "), the invention is not limited.

FIG. 1 shows a schematic flow chart of a method 100 for uplink-downlink ratio switching according to an embodiment of the present invention. The method 100 is performed by a base station. As shown in FIG. 1, the method 100 includes:

S110. Determine that the cell needs to switch to the first target ratio.

S120. Determine, according to the ratio interference information, whether the interference caused by the handover of the local cell to the first target ratio is tolerable, and the ratio interference information indicates that the ratio of the local cell to the neighboring cell of the local cell is matched. Inter-cell interference situation;

S130: If the interference that the local cell switches to the first target ratio can be tolerated, switch the local cell to the first target ratio.

When the current ratio of the cell does not match the uplink and downlink traffic well, the ratio switching enables the current uplink-downlink ratio to match the current traffic, which can increase the capacity of the cell and improve the performance of the system. However, different ratios in the small interval will cause inter-cell interference, affecting this small District and neighbourhood business. In the embodiment of the present invention, in order to improve the performance of the system, when determining that the cell needs to switch to the first target ratio, the base station determines, according to the ratio interference information, the interference that the local cell switches to the first target ratio. The interference ratio information indicates the interference between the cells corresponding to the ratio combination of the neighboring cell of the local cell and the neighboring cell of the local cell, and if the local cell switches to the interference caused by the first target ratio If it can be tolerated, the local cell is switched to the first target ratio. In this way, when the interference caused by the target ratio can be tolerated, the ratio switching can be performed, and the performance of the system can be maximized while considering the interference.

Therefore, the method for switching the uplink and downlink ratios according to the embodiment of the present invention, according to the ratiometric interference information, when the interference caused by the handover of the cell to the target ratio can be tolerated, the local cell is switched to the target ratio, Improve the matching flexibility of sub-frames and dynamically adapt to changes in traffic, which can improve system performance. The wireless backhaul system is not limited in this embodiment of the present invention. It should be understood that when the application is in the wireless backhaul system, the base station refers to the BeNB, and the UE refers to the BUE. That is, the base station in the embodiment of the present invention includes the BeNB, and the UE includes the BUE.

It should also be understood that, in the embodiment of the present invention, the first target ratio represents the target ratio of the local cell, the second target ratio represents the target ratio of the neighboring area, and the terms "first" and "second" are merely for Differentiating the different contents, the present invention should not be limited in any way.

In S110, the base station determines that the cell needs to switch to the first target ratio.

Specifically, the base station determines whether it is necessary to switch the ratio according to the uplink and downlink traffic of the cell. For example, the base station can adopt a periodic decision mode, and the proportioning handover decision period should be selected according to the service fluctuation period. The base station periodically records the uplink and downlink traffic at each moment. When the judgment period is reached, all the recorded values in the statistical period are weighted and averaged, and the statistical uplink/downstream traffic ratio is no longer matched with the current ratio, and the matching is not matched. It is determined that the cell needs to switch from the current ratio to the target ratio.

In S120, the base station determines, according to the ratio interference information, that the local cell switches to the first target. The interference caused by the ratio can be tolerated, and the ratio interference information indicates the inter-cell interference situation corresponding to the ratio combination of the local cell and the neighboring cell of the local cell.

When it is determined that the cell needs to switch to the first target ratio, the base station queries the matching interference information, and determines whether the interference caused by the handover of the local target to the first target ratio can be tolerated according to the ratio interference information.

In the embodiment of the present invention, the ratio interference information indicates interference between cells corresponding to the ratio combination of the local cell and the neighboring cell of the local cell. For example, the ratio interference information may be an interference tolerance table as shown in Table 1. In Table 1, cell 1 and cell 2 are neighbors, and each ratio combination corresponds to a different interference situation in a small interval. The embodiment of the present invention does not limit the representation manner of the ratio interference information. For example, the ratio interference information may also be a non-table representation manner, or the interference between cells corresponding to each ratio combination may also be represented by the size of the interference. .

Table 1

The base station determines, according to the ratiometric interference information, the inter-cell interference situation corresponding to the combination of the target ratio of the current cell and the current ratio of the neighboring cell, that is, determining whether the interference caused by the handover of the cell to the target ratio can be tolerated. Whether to perform ratio matching. For example, if the ratio interference information is an interference tolerance table as shown in Table 1, the "intolerance" in the table indicates that the interference caused by the corresponding ratio combination is intolerable, "tolerable" or "no interference". Said to be tolerable. If the ratio of interference information is dry The interference condition is represented by the size of the interference. If the interference corresponding to the matching combination exceeds the preset threshold, it is intolerable. When the preset threshold is not exceeded, it can be tolerated.

In S130, if the interference that the local cell switches to the first target ratio can be tolerated, the base station switches the local cell to the first target ratio.

When it is determined that the interference caused by the handover of the cell to the first target ratio can be tolerated, for example, determining the interference between the cells corresponding to the combination of the first target ratio of the current cell and the current ratio of the neighboring cells by using the query table 1 When it is "tolerable" or "no interference", the base station switches the cell to the first target ratio. For example, the base station sends a radio resource control protocol (Radio Resource Control, called "RRC") signaling or uses SIB (system message) information to notify the UE of the target ratio number and handover time of the handover, and ensures synchronous handover. In this way, the embodiment of the present invention switches the local cell to the target ratio when the interference caused by the handover of the cell to the target ratio can be tolerated according to the ratiometric interference information, and does not need to perform signaling interaction with the neighboring cell. The system signaling overhead is saved, and the real-time switching is ensured, thereby improving system performance.

Therefore, the method for switching the uplink and downlink ratios according to the embodiment of the present invention, according to the ratiometric interference information, when the interference caused by the handover of the cell to the target ratio can be tolerated, the local cell is switched to the target ratio, Improve the matching flexibility of sub-frames and dynamically adapt to changes in traffic, which can improve system performance.

In the embodiment of the present invention, as shown in FIG. 2, optionally, the method 100 further includes:

S140, if the interference that the local cell switches to the first target ratio cannot be tolerated, send, to the base station of the neighboring cell, a request message that is jointly switched to the first target ratio; and the base station that receives the neighboring area sends the request message. And a response message indicating whether the first target ratio can be switched to the first target ratio; if the neighboring area can jointly switch to the first target ratio, the local cell and the neighboring area are jointly switched to the first target ratio.

When the interference of the first target ratio is tolerated, the base station directly switches the local cell to the first target ratio; and the interference of the first target ratio is switched in the local cell. When it is intolerable, the base station can request the base station in the neighboring area to switch to the first target. Than. Specifically, the base station sends a signaling to the first target ratio of the local cell of the neighboring cell through the X2 interface, and requests the common ratio switching; the neighboring base station detects whether the cell in the RB is in the RB restricted state, and is in the RB restricted state. If the status is not returned, the response message indicates that the neighboring area is not in the RB restricted state. If the first target ratio is not affected, the QoS satisfaction rate of the cell is affected. If the impact is returned, the response message indicates that the switch cannot be switched. And returning a response message indicating that the first target ratio can be switched to and carrying the handover time; then, the base station of the local cell and the neighboring base station simultaneously switch the local cell and the neighboring cell to the first target ratio.

Therefore, the method for switching the uplink and downlink ratios according to the embodiment of the present invention, according to the ratiometric interference information, when the interference caused by the handover of the cell to the target ratio is not tolerated, the neighboring area is switched to the target ratio, and Improve overall system performance.

It should be understood that, in the embodiment of the present invention, when it is determined that the interference caused by the handover of the local cell to the target ratio cannot be tolerated, the non-handover mode may also be adopted, and this manner should also be covered by the protection scope of the present invention.

In the embodiment of the present invention, the ratio interference information may be established in advance, that is, in the initial stage of the station opening, each base station performs initialization work on the ratio interference information. Therefore, as shown in FIG. 3, optionally, the method 100 further includes:

S150. Establish the ratio information according to the interference between the cell and the neighboring cell when traversing the various ratios.

At the time of initialization, the cell and the neighboring area traverse the various ratios, measure the interference between the cells corresponding to each ratio combination, and establish the ratio interference information accordingly. Optionally, the S150 includes: a test sequence that is sent by the user equipment UE of the local cell in an uplink subframe to determine the neighboring zone for the local device and the neighboring cell. Whether the interference of the cell can be tolerated, and sending a test sequence to the UE on the downlink subframe in the downlink, so that the UE determines whether the interference of the neighboring cell to the local cell can be tolerated;

If the interference of the neighboring cell to the local cell can be tolerated, and the interference of the local cell to the neighboring cell can be tolerated, the inter-cell interference corresponding to each matching ratio combination is set to be tolerable; If the interference of the neighboring cell to the local cell is not tolerated, or the interference of the local cell to the neighboring cell cannot be tolerated, the inter-cell interference corresponding to each matching ratio combination is not tolerated.

Specifically, when the proportioning interference information is established, the interference is measured by transmitting a test sequence. It should be understood that, in the embodiment of the present invention, the test sequence includes test sequence or pilot information, and for the sake of cleaning, the test sequence is taken as an example for description. At the time of initialization, the cell and the neighboring cell respectively traverse various types of matching ratios, and then send specific test sequences on subframes of different transmission directions, and the receiving end determines the type by measuring the a priori test sequence. Whether the ratio can be tolerated. The parameter based on the determination is not limited to the Signal to Interference plus Noise Ratio ("SINR"), the Reference Signal Receiving Power (RSRF), the power value, and the error. The block rate (block error ratio, referred to as "BLER"), etc., is a tolerance criterion that does not affect the service and QoS of each cell after the ratio switching. For each ratio combination, only when the interference received by each cell can be tolerated, the inter-cell interference corresponding to the ratio combination can be set to be tolerable, and if the interference received by the cell is intolerable, then the interference is set. Inter-cell interference corresponding to the matching combination is not tolerated.

For example, in the system shown in FIG. 4, when the cell is initialized, the cell 1 selects the DSUUD ratio, and then tells the cell 2 to use the ratio (DSUDD) through the X2 port information interaction. In the fourth subframe, the cell 1 is Upstream, cell 2 is downlink. BUE1 and BeNB2 send specific and different test sequences. BeNB 1 determines whether interference 1 has an intolerable impact on cell 1 by receiving the power value/SINR value of the test sequence in different direction subframes, and BUE2 detects the influence of interference 2 on cell 2 in the same manner, and sends the result. To BeNB2, finally, through X2 port information interaction, it is finally determined whether the interference caused by the ratio combination can be tolerated. This traversed all kinds of different ratios, and finally completed the initialization of the matching information.

Therefore, the method for switching the uplink and downlink ratios in the embodiment of the present invention can improve the matching flexibility of the subframe and dynamically adapt to the traffic volume change by establishing the ratio interference information and performing the ratio switching according to the ratio interference information. Can improve system performance.

It should be understood that, in the embodiment of the present invention, there may be multiple neighboring cells, and when there are multiple neighboring cells, The interference interference information may be an interference tolerance table corresponding to a matching combination established by the local cell and each neighboring cell, or may be a total interference tolerance table corresponding to a matching combination established by the current cell and all neighboring cells, as long as there is one The interference received by the cell cannot be tolerated, and the end result is intolerable.

In the embodiment of the present invention, as shown in FIG. 5, the method 100 further includes: S160: Update the proportioning interference information when an update period arrives.

In order to ensure the real-time performance of the ratio interference information, the ratio interference information can be dynamically updated. Optionally, S160 comprises:

For each combination ratio of the local cell and the neighboring cell, a test sequence sent by the UE of the local cell on the previous or two symbols of the uplink MBSF subframe is determined in the uplink to determine the neighboring zone to the original Whether the interference of the cell can be tolerated, and sending a test sequence to the UE on the first or second symbols of the downlink MBSF subframe in the downlink, so that the UE determines whether the interference of the neighboring cell to the local cell can be tolerated;

If the interference of the neighboring cell to the local cell can be tolerated, and the interference of the local cell to the neighboring cell can be tolerated, the inter-cell interference corresponding to each matching ratio combination is updated to be tolerable;

If the interference of the neighboring cell to the local cell is not tolerated, or the interference of the local cell to the neighboring cell is not tolerated, the inter-cell interference corresponding to each combination of the ratios is updated to be intolerable.

Specifically, in order not to interrupt the current service, when the update period arrives, the subframe is configured as an MBSF subframe, and the test sequence is sent on the first or second symbols of the MBSFN subframe, and then traversed as the initialization process. The measurement, so as to refresh the matching interference information. The benefit of this is that it does not disrupt the current business and has minimal impact on the business.

The period of dynamically updating the matching interference information should be dynamically adjusted according to the real-time service. For example, for the wireless backhaul scenario, since both the BeNB and the BUE are in a relatively fixed position, the fluctuation of the interference is mainly due to the Doppler frequency shift of the surrounding environment, and should not be too large, and the period of dynamic adjustment should be It is relatively long, so the impact on the system is relatively small.

Therefore, the method for switching the uplink and downlink ratios in the embodiment of the present invention can ensure the real-time performance of the ratio interference information by updating the ratio interference information, thereby performing matching according to the ratio interference information. Switching can improve the matching flexibility of subframes, dynamically adapt to changes in traffic, and improve system performance. It should be understood that there may be other ways to establish or update the matching interference information. For example, the matching interference information may not be established when the station is opened, but the interference caused by the recording after each ratio switching in normal work. It is added to the matching interference information, and is used as a reference for the subsequent handover, which is not limited by the embodiment of the present invention.

In the embodiment of the present invention, as shown in FIG. 6, the method 100 further includes: S170, receiving, by the base station of the neighboring cell, a request message for jointly switching to a second target ratio; if the local cell does not have After the resource block RB is in a restricted state, and the second target ratio does not affect the quality of service QoS satisfaction rate of the local cell, sending, to the base station of the neighboring cell, a response message indicating that the second target ratio can be jointly switched; Switching the local cell and the neighboring area to the second target ratio.

Specifically, the neighboring cell of the cell and the neighboring cell of the cell are adjacent to each other, and the neighboring cell of the cell determines that the interference caused by switching to the second target ratio cannot be tolerated according to the matching interference information, and the neighboring cell The base station may request a common handover to the second target ratio from the base station of the local cell. The base station of the neighboring cell sends a signaling to the base station of the local cell to notify the second target ratio by the X2 interface, and requests the common ratio handover; the base station of the local cell detects whether the local cell is in the RB restricted state, and is in the RB receiving state. If the status is limited, the response message indicates that the handover cannot be performed. If the RB is not in the restricted state, it is detected whether the second target ratio affects the QoS satisfaction rate of the local cell. If the response is returned, the response message indicates that the handover cannot be performed. And returning a response message indicating that the second target ratio can be jointly switched, and carrying the handover time; then, the base station of the local cell and the base station of the neighboring area simultaneously switch the local cell and the neighboring area to the second target Matching.

Therefore, the method for switching the uplink and downlink ratios in the embodiment of the present invention can improve the performance of the entire system by switching to the target ratio together with the neighboring cells.

Embodiments of the present invention will be described in detail below with reference to specific examples. It should be noted that the examples are only intended to assist those skilled in the art to better understand the embodiments of the present invention and not to limit the scope of the embodiments of the present invention.

Taking the wireless backhaul system shown in FIG. 4 as an example, as shown in Table 2, first select subframes #0, #1. #2, #5, #6, #7 are fixed to the DSUDSU configuration mode to avoid interference between key channels. Select the four matching ratios in the table as the matching pool, numbered 0, 1, 2, and 6, respectively. .

2

The ratio interference information (interference tolerance table) is established for the #3, #4, #8, and #9 subframes, and the interference tolerance table is periodically maintained and refreshed to ensure a certain real-time performance.

Assuming that cell 1 uses a ratio of 0 and cell 2 uses a ratio of 2, there is interference on #3, #4, #8, and #9 subframes: BeNB1 receives interference from BeNB2 (interference 1); BUE2 receives from BUE1 Interference (interference 2), in general, BUE is negligible due to the use of directional antennas, relatively small transmit power, and not too close distance between BUEs during network planning. Therefore, the emphasis here is on interference 1 as the main interference.

1) BeNBl has recorded the SINR value on subframes #3, #4, #8, #9.

2) Cell 1 uses a ratio of 0, and cell 2 uses a ratio of 2, and BeNB2 transmits the same measurement information (pilot information or test sequence) on #3, #4, #8, #9.

3) BeNB 1 receives the measurement information on #3, #4, #8, #9 and compares it with the SINR value (ie, the value recorded in step 1) when the ratio is not changed.

4) When any sub-frame interference difference in the subframe is higher than the threshold, the ratio cannot be tolerated and the result value is written into the interference tolerance table. as shown in Table 3.

table 3 酉匕匕 2

0 1 2 6 Community 1 0 Can you

endure?

1 -

2 -

6 -

5) This way, the various ratios are traversed.

6) If there are multiple neighboring cells, the table can be extended by referring to the method shown in Table 4. The final judgment result is in the form of intersection. As long as one neighboring zone indicates that the interference cannot be tolerated, the final result is intolerable.

Table 4

If interference 2 cannot be ignored, establish an interference tolerance table as follows.

1) BeNBl i has recorded the same time as the child's time #3, #4, #8, #9上^; SINR value. 2) Cell 1 uses a ratio of 0, and cell 2 uses a ratio of 2, and BeNB2 transmits the same measurement information (pilot information or test sequence) on #3, #4, #8, #9.

3) BeNB1 receives the measurement information on #3, #4, #8, #9 and compares it with the SINR value (ie, the value recorded in step 1) when the ratio is not changed.

4) When any sub-frame interference difference in the sub-frame is higher than the threshold, the ratio cannot be tolerated, and the result value is written into the interference measurement tolerance table.

5) This way, the various ratios are traversed.

6) BUE2 i has recorded the same as the 酉酉匕 t匕时子顿#3, #4, #8, #9上^; SINR value.

7) Cell 1 uses a ratio of 0, and cell 2 uses a ratio of 2, and BUE1 transmits the same measurement information (pilot information or test sequence) on #3, #4, #8, #9.

8) BUE2 receives the measurement information on #3, #4, #8, #9 and compares it with the SINR value (ie the value recorded in step 6) when the ratio is not changed.

9) When any sub-frame interference difference in the subframe is higher than the threshold, the ratio cannot be tolerated, and the result is sent to the BeNB2, and then sent to the BeNB 1 through the X2 port.

10) BeNB1 and BeNB2 take the intersection of the interference 1 and interference 2 results to find out whether the ratio can be tolerated and write the interference tolerance table. If interference 1 and interference 2 are unbearable as long as one interference is present, the result is intolerable.

11) If there are many neighbors, expand the table as shown in Table 4, and take the form of intersection in the final judgment. As long as one neighbor indicates that the interference cannot be tolerated, the final result is intolerable.

When the backhaul cell is in normal operation and the interference tolerance table refresh period arrives, the target matching subframe is configured as an MBSF subframe, and the test sequence is sent on the first or second symbols of the MBSF subframe, and then the initialization process is performed. The traversal measurements are performed as such to refresh the interference tolerance table. The benefit of this is that it does not disrupt the current business and has minimal impact on the business.

The interference tolerance table is used as a criterion for determining whether to switch the ratio. With a ratio of 0,

1, 2 and 6 are used as matching ratio pools, and it is determined according to the uplink and downlink traffic volume of the cell whether it is necessary to switch the ratio. The ratio switching decision period should be selected according to the service fluctuation period. For example, the BeNB periodically records the uplink and downlink traffic at the moment. When the decision period is reached, all the recorded values in the statistical period are weighted and averaged, and then the decision switching table (as shown in Table 5) is queried to check the statistical traffic. Whether the ratio no longer matches the current ratio determines whether the ratio needs to be switched.

table 5

When BeNB1 determines that a ratio switch is required, it directly queries its own interference tolerance table to see if it can switch.

1) If the switch can be performed, the RRC signaling is sent or the SIB information is sent, and the BUE is notified to switch the matching number and the switching time to ensure synchronous switching.

2) If it cannot be switched, send the signaling through the X2 port to inform the neighboring area of its target ratio.

(1) If BeNB2 is in the RB-restricted state, the switch is cancelled by the X2 port return response message.

(2) If the BeNB2 is in the non-RB-restricted state, it checks whether the target ratio affects the QoS satisfaction rate of the local cell. If it does not affect, it returns a response message, indicating that it can switch to the target ratio with BeNB1 and carry the handover time. BeNB1 and BeNB2 simultaneously perform handover at the handover time.

Therefore, the method for switching the uplink and downlink ratios according to the embodiment of the present invention, according to the ratiometric interference information, when the interference caused by the handover of the cell to the target ratio can be tolerated, the local cell is switched to the target ratio, When it is determined that the interference caused by the handover of the local cell to the target ratio cannot be tolerated, switching to the target ratio with the neighboring cell can improve the performance of the entire system.

It should be understood that, in various embodiments of the present invention, the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention. The implementation process constitutes any limitation. The method for uplink-downlink ratio switching according to an embodiment of the present invention is described in detail above with reference to FIG. 1 to FIG. 6. Hereinafter, a base station according to an embodiment of the present invention will be described with reference to FIG. 7 to FIG.

FIG. 7 shows a schematic block diagram of a base station 700 in accordance with an embodiment of the present invention. As shown in FIG. 7, the base station 700 includes:

The determining module 710 is configured to determine that the cell needs to switch to the first target ratio, and determine, according to the ratio interference information, whether the interference caused by the handover of the local cell to the first target ratio is tolerable, and the ratio interference The information indicates the interference between the cells corresponding to the matching combination of the local cell and the neighboring cell of the local cell;

The executing module 720 is configured to switch the local cell to the first target ratio if the interference caused by the local cell switching to the first target ratio can be tolerated.

The base station according to the embodiment of the present invention, when determining that the interference caused by the handover of the cell to the target ratio can be tolerated according to the ratiometric interference information, switching the local cell to the target ratio can improve the ratio flexibility of the subframe. Dynamically adapt to changes in business volume to improve system performance.

In the embodiment of the present invention, as shown in FIG. 8 , the base station 700 further includes: a sending module 730, configured to: if the interference that the local cell switches to the first target ratio cannot be tolerated, The base station of the neighboring cell sends a request message that is jointly switched to the first target ratio; the receiving module 740 is configured to receive, by the base station of the neighboring area, a response message indicating whether the first target ratio can be switched to the first target ratio;

The execution module 720 is further configured to switch the local cell and the neighboring cell to the first target ratio if the neighboring cell can jointly switch to the first target ratio.

The base station according to the embodiment of the present invention, when determining that the interference caused by the handover of the cell to the target ratio cannot be tolerated according to the ratiometric interference information, and switching to the target ratio together with the neighboring cell, can improve the performance of the entire system.

In the embodiment of the present invention, as shown in FIG. 9, the base station 700 further includes: a creating module 750, configured to establish, according to the interference between the cell and the neighboring cell in traversing various ratios, The ratio interferes with the information. Optionally, the creating module 750 is specifically configured to, for each combination combination of the local cell and the neighboring cell, receive a test sequence sent by the user equipment UE of the local cell in an uplink subframe to determine the uplink sequence. Whether the interference of the neighboring cell to the local cell can be tolerated, and sending a test sequence to the UE in the downlink subframe in the downlink direction, so that the UE determines whether the interference of the neighboring cell to the local cell can be tolerated; The interference of the cell can be tolerated, and the interference of the cell to the neighboring cell can be tolerated, and the interference between the cells corresponding to each combination of the ratios is set to be tolerable; if the interference of the neighboring cell to the cell is not tolerated Or, the interference of the local cell to the neighboring cell cannot be tolerated, and the inter-cell interference corresponding to each matching ratio combination is not tolerated.

The base station in the embodiment of the present invention can improve the performance of the system by establishing ratio-matching interference information and performing ratio-matching switching according to the ratio-matching interference information, so as to improve the ratio flexibility of the subframe and dynamically adapt to the traffic volume change.

In the embodiment of the present invention, as shown in FIG. 10, the base station 700 further includes: an updating module 760, configured to update the proportioning interference information when an update period arrives.

Optionally, the updating module 760 is specifically configured to: when the update period arrives, for each of the matching combinations of the local cell and the neighboring cell, the UE that receives the local cell in the uplink is in the previous one of the uplink MBSF subframes. Or a test sequence sent on two symbols to determine whether the neighboring cell can tolerate interference to the local cell, and send a test sequence to the UE on the first or second symbols of the downlink MBSF subframe in the downlink to facilitate the The UE determines whether the interference of the neighboring cell to the local cell can be tolerated; if the interference of the neighboring cell to the local cell can be tolerated, and the interference of the local cell to the neighboring cell can be tolerated, the corresponding combination of the ratios is corresponding. Inter-cell interference update is tolerable; if the neighboring cell does not tolerate interference to the local cell, or the local cell cannot interfere with the neighboring cell, the inter-cell interference corresponding to each matching ratio combination is Updated to be intolerable.

The base station of the embodiment of the present invention can ensure the real-time performance of the ratio interference information by updating the proportioning interference information, thereby performing ratio ratio switching according to the ratio interference information, thereby improving the ratio flexibility of the subframe and dynamically adapting the traffic volume. Change, improve system performance.

In the embodiment of the present invention, the receiving module 740 is further configured to receive the base of the neighboring cell. a request message sent by the station to switch to the second target ratio;

The sending module 730 is further configured to: if the local cell is not in the resource block RB restricted state, and the second target ratio does not affect the monthly good quality QoS satisfaction rate of the local cell, send the indication to the base station of the neighboring cell A response message that can be commonly switched to the second target ratio;

The execution module 720 is further configured to switch the local cell and the neighboring cell to the second target ratio.

The base station in the embodiment of the present invention can improve the performance of the entire system by switching to the target ratio together with the neighboring cell.

The base station 700 according to an embodiment of the present invention may correspond to a base station in a method for uplink-downlink ratio switching according to an embodiment of the present invention, and the foregoing and other operations and/or functions of respective modules in the base station 700 are respectively implemented to implement FIG. The corresponding processes of the respective methods in FIG. 6 are not described here.

Figure 11 shows a schematic block diagram of a base station 800 in accordance with another embodiment of the present invention. As shown in Figure 11, the base station 800 includes:

The processor 810 is configured to determine that the cell needs to switch to the first target ratio, and determine, according to the ratio interference information, whether the interference that the local cell switches to the first target ratio can be tolerated, and the ratio interference The information indicates the inter-cell interference situation corresponding to the matching combination between the local cell and the neighboring cell of the local cell; if the interference caused by the local cell switching to the first target ratio can be tolerated, the local cell is switched to The first target ratio.

In the embodiment of the present invention, as shown in FIG. 11, the base station 800 further includes: a transmitter 820, configured to: if the interference that the local cell switches to the first target ratio cannot be tolerated, The base station of the neighboring area sends a request message that is jointly switched to the first target ratio;

a receiver 830, configured to receive, by the base station sent by the neighboring cell, whether the indication can be jointly switched to the first Response message of the target ratio;

The processor 810 is further configured to switch the local cell and the neighboring cell to the first target ratio if the neighboring cell can jointly switch to the first target ratio.

In the embodiment of the present invention, the processor 810 is further configured to establish the ratio interference information according to the interference situation between the cell and the neighboring cell when traversing the various ratios.

Optionally, the receiver 830 is further configured to, for each ratio combination of the local cell and the neighboring cell, receive a test sequence sent by the user equipment UE of the local cell in an uplink subframe when determining, to determine the Whether the interference of the neighboring cell to the local cell can be tolerated; the transmitter 820 is further configured to send a test sequence to the UE on the downlink subframe in the downlink, so that the UE determines whether the interference of the neighboring cell to the local cell can be tolerated. The processor 810 is further configured to: if the interference of the neighboring cell to the local cell can be tolerated, and the interference of the local cell to the neighboring cell can be tolerated, set the inter-cell interference corresponding to each combination of the ratios to enable Tolerance; If the interference of the neighboring cell to the local cell is not tolerated, or the interference of the neighboring cell to the neighboring cell cannot be tolerated, the inter-cell interference corresponding to each matching ratio combination is not tolerated.

In the embodiment of the present invention, the processor 810 is further configured to update the matching information when the update period arrives.

Optionally, the receiver 830 is further configured to: when the update period arrives, for each ratio combination of the local cell and the neighboring cell, the UE that receives the local cell in the uplink is in front of the uplink MBSF subframe. a test sequence transmitted on one or two symbols to determine whether the neighboring zone can tolerate interference to the local cell; the transmitter 820 is further configured to use one or two of the downlink MBSF subframes in downlink Sending a test sequence to the UE in a symbol to facilitate the UE to determine whether the neighboring cell can tolerate interference to the local cell; the processor 810 is further configured to: if the neighboring cell interferes with the local cell, the cell can be tolerated The interference to the neighboring area can be tolerated, and the inter-cell interference corresponding to each combination of the ratios is updated to be tolerable; if the neighboring area does not tolerate interference to the local cell, or the local area of the neighboring area If the interference is not tolerated, the inter-cell interference corresponding to each of the ratio combinations is updated to be intolerable.

In the embodiment of the present invention, the receiver 830 is further configured to receive a request message that is jointly sent by the base station of the neighboring cell to switch to the second target ratio.

The transmitter 820 is further configured to: if the local cell is not in the resource block RB restricted state, and the second target ratio does not affect the quality of service QoS satisfaction rate of the local cell, send the indication to the base station of the neighboring cell to be common Switching to the response message of the second target ratio;

The processor 810 is further configured to switch the local cell and the neighboring cell to the second target ratio. The base station in the embodiment of the present invention can improve the performance of the entire system by switching to the target ratio together with the neighboring cell.

The base station 800 according to an embodiment of the present invention may correspond to a base station in a method of uplink-downlink ratio switching according to an embodiment of the present invention, and the above and other operations and/or functions of respective modules in the base station 800 are respectively implemented to implement FIG. The corresponding processes of the respective methods in FIG. 6 are not described here.

It should be understood that in the embodiment of the present invention, the term "and/or" is merely an association describing the associated object, indicating that there may be three relationships. For example, A and / or B can be expressed as: A exists separately, A and B exist, and B exists separately. In addition, the character '7' in this article generally indicates that the contextual object is an "or" relationship.

One of ordinary skill in the art will recognize that the embodiments described herein are described in connection with the embodiments disclosed herein. The example units and algorithm steps can be implemented in electronic hardware, computer software, or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the examples have been generally described in terms of function in the above description. Composition and steps. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that, for the convenience and the cleaning of the description, the specific working processes of the system, the device and the unit described above can refer to the corresponding processes in the foregoing method embodiments, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection. The components displayed as units may or may not be physical units, i.e., may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on this understanding, The technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions. To enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a USB flash drive, a mobile hard disk, and a read only memory.

(ROM, Read-Only Memory), random access memory (RAM), disk or optical disk, and other media that can store program code.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any equivalent person can be easily conceived within the technical scope of the present invention. Modifications or substitutions are intended to be included within the scope of the invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Rights request

1. A method for switching uplink and downlink ratios, which is characterized by including:

Determine that this community needs to switch to the first target ratio;

Determine whether the interference caused by the switching of the current cell to the first target configuration can be tolerated according to the configuration interference information, where the configuration interference information represents the configuration ratio between the current cell and the neighboring cells of the current cell. The interference situation between the corresponding cells of the combination;

If the interference caused by switching the local cell to the first target ratio can be tolerated, then switch the local cell to the first target ratio.

2. The method according to claim 1, characterized in that, the method further includes: if the interference caused by the switching of the local cell to the first target ratio cannot be tolerated, sending a signal to the base station of the neighboring cell. Send a request message for joint switching to the first target ratio;

Receive a response message sent by the base station of the neighboring cell indicating whether they can jointly switch to the first target ratio;

If the neighboring cells can jointly switch to the first target ratio, then the local cell and the neighboring cells jointly switch to the first target ratio.

3. The method according to claim 1 or 2, characterized in that, the method further includes: establishing the ratio according to the interference situation between the cells when the current cell and the neighboring cell traverse various ratios. interference information.

4. The method according to claim 3, characterized in that, establishing the ratio interference information based on the interference situation between cells when the current cell and the neighboring cell traverse various ratios, including:

For each matching combination of the own cell and the neighboring cell, receive the test sequence sent by the user equipment UE of the own cell on the uplink subframe during uplink to determine the neighbor cell's response to the own cell. Whether the interference can be tolerated, a test sequence is sent to the UE on the downlink subframe during downlink so that the UE can determine whether the neighbor cell can tolerate interference to the current cell; If the interference of the neighboring cell to the current cell is tolerable, and the interference of the current cell to the neighboring cell is tolerable, then set the interference between cells corresponding to each configuration combination to be tolerable;

If the neighboring cell cannot tolerate interference to the own cell, or the current cell cannot tolerate interference to the neighboring cell, then set the interference between cells corresponding to each configuration combination to be intolerable.

5. The method according to claim 3 or 4, characterized in that the method further includes: updating the ratio interference information when the update period arrives.

6. The method according to claim 5, characterized in that, the updating of the ratio interference information includes:

For each matching combination of the local cell and the neighboring cell, receive the test sequence sent by the UE of the local cell on the first one or two symbols of the uplink multicast single frequency network MBSF subframe in the uplink. In order to determine whether the neighboring cell can tolerate interference to the own cell, in the downlink, a test sequence is sent to the UE on the first one or two symbols of the downlink MBSF subframe so that the UE can determine whether the neighboring cell can tolerate the interference. Whether the district can tolerate interference to the said cell;

If the interference of the neighboring cell to the current cell is tolerable, and the interference of the current cell to the neighboring cell is tolerable, then the interference between cells corresponding to each of the configuration combinations is updated to be tolerable;

If the neighboring cell cannot tolerate interference to the own cell, or the current cell cannot tolerate interference to the neighboring cell, then the interference between cells corresponding to each configuration combination is updated to intolerable.

7. The method according to any one of claims 1 to 6, characterized in that the method further includes:

Receive a request message sent by the base station of the neighboring cell to jointly switch to the second target ratio; if the current cell is not in a resource block RB restricted state, and the second target ratio does not affect the resource block RB of the current cell. Quality of Service QoS satisfaction rate, then the base station of the neighboring cell is sent to indicate that the a response message for switching to the second target ratio;

The local cell and the neighboring cell are jointly switched to the second target ratio.

8. A base station, characterized by including:

The determination module is used to determine that the current cell needs to switch to the first target configuration, and, based on the configuration interference information, determine whether the interference caused by the local cell switching to the first target configuration can be tolerated, and the configuration The ratio interference information represents the interference situation between cells corresponding to the ratio combination of the current cell and the neighboring cells of the current cell;

An execution module, configured to switch the local cell to the first target ratio if the interference caused by switching the local cell to the first target ratio can be tolerated.

9. The base station according to claim 8, characterized in that, the base station further includes: a sending module, configured to send a signal to all cells if the interference caused by switching the local cell to the first target ratio cannot be tolerated. The base stations of the neighboring cells send a request message for jointly switching to the first target ratio;

A receiving module, configured to receive a response message sent by the base station of the neighboring cell indicating whether they can jointly switch to the first target ratio;

The execution module is also configured to jointly switch the local cell and the neighboring cell to the first target ratio if the neighboring cells can jointly switch to the first target ratio.

10. The base station according to claim 8 or 9, characterized in that, the base station further includes: a creation module, used for inter-cell interference when traversing various ratios between the current cell and the neighboring cells, The proportional interference information is established.

11. The base station according to claim 10, characterized in that, the creation module is specifically configured to, for each matching combination of the current cell and the neighboring cell, receive users of the current cell in uplink. The device UE sends a test sequence on the uplink subframe to determine whether the neighbor cell can tolerate interference to the own cell. In the downlink, it sends a test sequence to the UE on the downlink subframe to facilitate the UE to determine the Whether the interference of the neighboring cell to the current cell can be tolerated; if the interference of the adjacent cell to the current cell can be tolerated, and the interference of the current cell to the adjacent cell can be tolerated, then it is assumed that Set the interference between cells corresponding to each configuration combination to be tolerable; if the neighboring cell cannot tolerate the interference of the own cell, or the current cell cannot tolerate the interference of the neighboring cell, then set Interference between cells corresponding to each of the above ratio combinations is intolerable.

12. The base station according to claim 10 or 11, characterized in that the base station further includes:

An update module, configured to update the ratio interference information when the update period arrives.

13. The base station according to claim 12, wherein the update module is specifically configured to receive all the uplink signals for each matching combination of the local cell and the neighboring cell when the update cycle arrives. Describes the test sequence sent by the UE of the current cell on the first one or two symbols of the uplink multicast single frequency network MBSFN subframe to determine whether the neighbor cell can tolerate interference to the current cell. In the downlink, Send a test sequence to the UE on the first one or two symbols of the MBSFN subframe so that the UE can determine whether the interference of the neighboring cell to the current cell can be tolerated; if the neighboring cell interferes with the current cell The interference of can be tolerated, and the interference of the local cell to the neighboring cell can be tolerated, then the interference between the cells corresponding to each matching combination is updated to be tolerable; If the neighboring cell interferes with the local cell The interference of the cell cannot be tolerated, or the interference of the local cell to the neighboring cell cannot be tolerated, then the interference between cells corresponding to each combination of ratios is updated to be intolerable.

14. The base station according to any one of claims 8 to 13, characterized in that the receiving module is also configured to receive a request message sent by the base station of the neighboring cell to jointly switch to the second target ratio;

The sending module is also configured to send a message to the base station of the neighboring cell if the local cell is not in a resource block RB restricted state and the second target ratio does not affect the quality of service QoS satisfaction rate of the local cell. Send a response message indicating that it is possible to jointly switch to the second target ratio;

The execution module is also configured to jointly switch the local cell and the neighboring cell to the second target configuration ratio.