WO2014067086A1

WO2014067086A1 - Interference notification method, control method and related device

Info

Publication number: WO2014067086A1
Application number: PCT/CN2012/083806
Authority: WO
Inventors: 赵悦莹; 王宗杰
Original assignee: 华为技术有限公司
Priority date: 2012-10-31
Filing date: 2012-10-31
Publication date: 2014-05-08
Also published as: CN103918318A; CN103918318B

Abstract

The present invention relates to the communications field, and especially relates to an interference notification method, a detection method and a related device. The notification method comprises: a micro base station detecting a load situation of the micro base station; according to the detected load situation, the micro base station dynamically setting emission power of an auxiliary pilot channel, and broadcasting the auxiliary pilot channel so that user equipment that detects the auxiliary pilot channel reports a detection result of the user equipment to a macro base station so that the macro base station controls interference caused by the user equipment to the micro base station. The present invention effectively controls interference caused by the user equipment in a non-soft switching area of the micro base station to the micro base station.

Description

Interference notification method, control method

Technical field

The present invention relates to the field of communications, and in particular, to a notification method, a control method, and related devices for interference. Background technique

In the existing macrocell networking, because the cell radius is generally large, users in the edge zone are not well covered, and performance is not guaranteed. In addition, in the hot traffic area of the macro cell, due to the large number of users, there are some cases where the user performance is not guaranteed.

Therefore, the networking mode of Heterogeneous Network (Hetnet) (macro-micro base station networking) is currently favored by many network vendors. In the heterogeneous network mode, the microcell base station is used to supplement the blind zone of the macro cell, or the microcell base station is used in the hotspot service area of the macro cell base station to absorb traffic, thereby improving the capacity of the cell and ensuring the user experience.

However, in a heterogeneous network, since the transmit power of the microcell base station is smaller than that of the macrocell base station (the macro base station generally has a transmit power of 43 dBm, and the micro base station generally has a transmit power of 37 dBm, or 30 dBm), therefore, the uplink and downlink power balance points are not The same point, that is, the point where the downlink macro base station and the micro base station reach the same power of the user equipment (User Equipment, UE) is different from the point where the uplink UE arrives at the same power of the macro base station and the micro base station. The current wireless connection status of the UE is determined by the downlink measurement. If the UE initially camps on the macro base station and measures that the common pilot channel quality of the macro base station is greater than the common pilot channel quality of the micro base station, the micro base station is added. To the active set, where the macro base station is the serving cell and the micro base station is the non-serving cell; instead, if the UE initially camps on the micro base station, and the measured common pilot channel quality of the macro base station is greater than the common pilot quality of the micro base station , then the macro base station is added to the active set. The micro base station is a serving cell, and the macro base station is a non-serving cell. Moreover, when the difference between the common pilot channel quality of the macro base station measured by the UE and the common pilot channel quality of the micro base station is within a certain range, that is, when the UE is in the soft handover area, the UE can simultaneously cooperate with the macro base station and the micro base station. In the actual communication, when the UE is in the non-soft handover area of the micro base station, the uplink transmission of the UE to the macro base station still causes a large interference to the micro base station. At this time, since the UE is not in the soft handover area, the micro base station It is impossible to know the existence of the interference source and cannot interfere with the control. Therefore, it is necessary to introduce a mechanism to solve the problem of interference control in the non-soft handover area under the heterogeneous network.

Summary of the invention In view of the above, the present invention provides an interference notification method, a control method, and a related device, which can effectively control interference of a user equipment in a non-soft handover area of a micro base station to a micro base station in a heterogeneous network environment.

A first aspect of the present invention provides a method for notifying an interference, which may include:

The micro base station detects a load condition of the micro base station;

The micro base station dynamically sets the transmit power of the auxiliary pilot channel according to the detected load condition, and the micro base station broadcasts the auxiliary pilot channel, so that the user equipment that detects the auxiliary pilot channel will The user equipment detection result is reported to the macro base station, so that the macro base station controls the interference caused by the user equipment to the micro base station.

In a first possible implementation, the transmitting, by the micro base station, the auxiliary pilot channel includes: the micro base station continuously broadcasting the auxiliary pilot channel;

Or the micro base station periodically broadcasts the auxiliary pilot channel;

Or the micro base station broadcasts the auxiliary pilot channel according to a specified irregular time interval. With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the auxiliary pilot channel is a common common pilot channel, a common pilot channel, and a synchronization channel. Any one.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a third possible implementation manner, the auxiliary pilot channel is a common common pilot channel, a common pilot channel, and a synchronization channel. The pilot channel is distinguished from the primary common pilot channel, the common pilot channel, and the synchronization channel by a channel identifier.

A second aspect of the present invention provides a method for controlling interference, which may include:

The user equipment detects an auxiliary pilot channel broadcast by the micro base station;

The user equipment reports the detection result of the user equipment to the macro base station, so that the macro base station controls the interference caused by the user equipment to the micro base station.

In a first possible implementation manner, the reporting, by the user equipment, the detection result of the user equipment to the macro base station includes:

And the user equipment sends a dedicated physical control channel to the macro base station, and reports, by using the feedback information bit of the dedicated physical control channel, the interference caused by the user equipment to the micro base station.

With reference to the second aspect, in a second possible implementation, the user equipment reports the detection result of the user equipment to the macro base station, so that the macro base station causes the user equipment to be caused by the micro base station. Interference control includes: The user equipment divides the detected energy information of the auxiliary pilot channel into at least two levels;

Transmitting, by the user equipment, an enhanced uplink dedicated channel to the macro base station, and reporting, by using a control bit of the enhanced uplink dedicated channel, a level of energy information of the auxiliary pilot channel detected by the user equipment to the macro base station And causing the macro base station to control interference caused by the user equipment to the micro base station according to the different levels.

With reference to the second possible implementation of the second aspect, in a third possible implementation, the capability information of the auxiliary pilot channel includes a received signal code power of the auxiliary pilot channel, and/or the The signal to noise ratio of the auxiliary pilot channel.

A third aspect of the present invention provides a method for controlling interference, which may include:

Receiving, by the macro base station, a detection result of the auxiliary pilot channel of the user equipment to the micro base station;

And the macro base station controls, according to the received detection result, interference caused by the user equipment to the micro base station.

In a first possible implementation, the detection result of the macro base station receiving the auxiliary pilot channel of the user equipment to the micro base station includes:

The macro base station receives the user equipment to send a dedicated physical control channel to the macro base station, and the feedback information bit of the dedicated physical control channel reports interference caused by the user equipment to the micro base station.

With reference to the third aspect, in a second possible implementation manner, the macro base station receiving the detection result of the user equipment to the auxiliary pilot channel of the micro base station includes:

The macro base station receives the enhanced uplink dedicated channel sent by the user equipment to the macro base station, and multiplexes the energy information of the auxiliary pilot channel detected by the user equipment in the control bit of the enhanced uplink dedicated channel;

The controlling, by the macro base station, the interference caused by the user equipment to the micro base station according to the received detection result includes:

The macro base station controls, according to the different levels, interference caused by the user equipment to the micro base station.

A fourth aspect of the present invention provides a micro base station, which may include:

a detecting module, configured to detect a load condition of the micro base station;

a broadcast module, configured to dynamically set a transmit power of the auxiliary pilot channel according to the detected load condition, and broadcast the auxiliary pilot channel; so that the user equipment that detects the auxiliary pilot channel will use the user equipment The detection result is reported to the macro base station, so that the macro base station pairs the user equipment with the micro The interference caused by the base station is controlled.

In a first possible implementation manner, the broadcast module is specifically configured to continuously broadcast the auxiliary pilot channel; or, periodically broadcast the auxiliary pilot channel; or broadcast according to a specified irregular time interval. The auxiliary pilot channel.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in the second possible implementation manner, the auxiliary pilot channel is a common common pilot channel, a common pilot channel, and a synchronization channel. Any of them.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in a third possible implementation manner, the auxiliary pilot channel is a common common pilot channel, a common pilot channel, and a synchronization channel The outer pilot channel is distinguished from the primary common pilot channel by the channel identifier, from the common pilot channel, and the synchronization channel.

A fifth aspect of the present invention provides a user equipment, which may include:

a detecting module, configured to detect an auxiliary pilot channel broadcast by the micro base station;

And a sending module, configured to report the detection result of the detecting module to the macro base station, so that the macro base station controls the interference caused by the user equipment to the micro base station.

In a first possible implementation, the sending module is specifically configured to send a dedicated physical control channel to the macro base station, and report the user equipment pair to the macro base station by using a feedback information bit of the dedicated physical control channel. The interference caused by the micro base station.

With reference to the fifth aspect, in a second possible implementation manner, the user equipment further includes:

a dividing module, configured to divide energy information of the auxiliary pilot channel detected by the detecting module into at least two levels;

The sending module is specifically configured to send an enhanced uplink dedicated channel to the macro base station, and report, by using a control bit of the enhanced uplink dedicated channel, a level of energy information of the auxiliary pilot channel detected by the user equipment to the The macro base station is configured to enable the macro base station to control interference caused by the user equipment to the micro base station according to the different levels.

With reference to the second possible implementation manner of the fifth aspect, in a third possible implementation, the capability information of the auxiliary pilot channel includes a received signal code power of the auxiliary pilot channel and/or the auxiliary Signal to noise ratio of the pilot channel.

A sixth aspect of the present invention provides a macro base station, which may include:

a receiving module, configured to receive a detection result of the auxiliary pilot channel of the user equipment to the micro base station, and a control module, configured to: create, by the user equipment, the micro base station according to the received detection result The interference is controlled.

In a first possible implementation manner, the receiving module is specifically configured to receive, by the user equipment, a dedicated physical control channel, where the feedback information bit of the dedicated physical control channel reports the user equipment The interference caused by the micro base station.

With reference to the sixth aspect, in a second possible implementation manner, the receiving module is specifically configured to receive, by the user equipment, an enhanced uplink dedicated channel, where the control bit of the enhanced uplink dedicated channel is multiplexed a level of energy information of the auxiliary pilot channel detected by the user equipment;

The control module is specifically configured to control interference caused by the user equipment to the micro base station according to the different levels.

A seventh aspect of the present invention provides a control system for interference, which may include: a micro base station according to the present invention, and a user equipment according to the present invention, and a macro base station according to the present invention.

An eighth aspect of the present invention provides a micro base station, which may include a processor, where the processor performs the following steps:

Detecting a load condition of the micro base station;

Broadcasting an auxiliary pilot channel according to the detected load condition, and the transmit power of the auxiliary pilot channel is dynamically set according to the load of the micro base station; so that the user equipment that detects the auxiliary pilot channel will use the user The device detection result is reported to the macro base station, so that the macro base station controls the interference caused by the user equipment to the micro base station.

In a first possible implementation, the performing, by the processor, the broadcasting the auxiliary pilot channel specifically includes:

The processor continuously broadcasts the auxiliary pilot channel;

Or the processor periodically broadcasts the auxiliary pilot channel;

Alternatively, the processor broadcasts the auxiliary pilot channel according to a specified irregular time interval. With reference to the eighth aspect, or the first possible implementation manner of the eighth aspect, in the second possible implementation manner, the auxiliary pilot channel is a common common pilot channel, a common pilot channel, or a synchronization channel. One.

With reference to the eighth aspect, or the first possible implementation manner of the eighth aspect, in a third possible implementation, the auxiliary pilot channel is a common common pilot channel, a common pilot channel, and a synchronization channel. The pilot channel is distinguished from the primary common pilot channel, from the common pilot channel, and the synchronization channel by a unique channel identifier.

A ninth aspect of the present invention provides a user equipment, which may include: a processor and a transmitter, where: The processor is configured to detect an auxiliary pilot channel broadcast by the micro base station;

The transmitter is configured to report the detection result of the processor to the macro base station, so that the macro base station controls interference caused by the user equipment to the micro base station.

In a first possible implementation, the transmitter is specifically configured to send a dedicated physical control channel to the macro base station, and report the user equipment pair to the macro base station by using a feedback information bit of the dedicated physical control channel. The interference caused by the micro base station.

With reference to the ninth aspect, in a second possible implementation, the processor is further configured to divide energy information of the auxiliary pilot channel detected by the detection module into at least two levels;

The transmitter is specifically configured to send an enhanced uplink dedicated channel to the macro base station, and report the level of energy information of the auxiliary pilot channel detected by the user equipment to the control bit of the enhanced uplink dedicated channel. The macro base station is configured to enable the macro base station to control interference caused by the user equipment to the micro base station according to the different levels.

With reference to the second possible implementation manner of the ninth aspect, in a third possible implementation, the capability information of the auxiliary pilot channel includes a received signal code power of the auxiliary pilot channel, and/or the The signal to noise ratio of the auxiliary pilot channel.

A tenth aspect of the present invention provides a macro base station, which may include a receiver and a processor, where: the receiver is configured to receive a detection result of a user equipment to an auxiliary pilot channel of a micro base station; The detection result received by the receiver controls interference caused by the user equipment to the micro base station.

In a first possible implementation manner, the receiver is specifically configured to receive, by the user equipment, a dedicated physical control channel, where the feedback information bit of the dedicated physical control channel reports the user equipment The interference caused by the micro base station.

With reference to the tenth aspect, in a second possible implementation manner, the receiver is configured to receive, by the user equipment, an enhanced uplink dedicated channel, where the control bit of the enhanced uplink dedicated channel is multiplexed a level of energy information of the auxiliary pilot channel detected by the user equipment;

The processor is specifically configured to control interference caused by the user equipment to the micro base station according to the different levels.

An eleventh aspect of the present invention provides a computer storage medium, which can store a program, which program can include some or all of the steps of the interference notification method of the present invention.

A twelfth aspect of the present invention provides a computer storage medium, wherein the computer storage medium may store a program, and the program may include part or all of a control method of interference on the user equipment side of the present invention. Steps.

A thirteenth aspect of the present invention provides a computer storage medium storing a program which, when executed, may include some or all of the steps of the control method of the interference on the macro base station side of the present invention.

It can be seen that, in some possible implementation manners of the present invention, the micro base station detects a load condition of the micro base station; the micro base station broadcasts an auxiliary pilot channel according to the detected load condition, and the auxiliary pilot channel And transmitting, by the user equipment that detects the auxiliary pilot channel, the user equipment detection result to the macro base station, so that the macro base station pairs the user equipment The interference caused by the micro base station is controlled to effectively control the interference of the user equipment in the non-soft handover area of the micro base station to the micro base station.

DRAWINGS

Figure la is a schematic flowchart of an embodiment of a method for notifying interference according to the present invention;

FIG. 1b is a schematic diagram of an embodiment of a slot format of an auxiliary pilot channel according to the present invention; FIG. 1c is a schematic diagram of an embodiment of a bit sequence of an auxiliary pilot channel according to the present invention; FIG. Schematic diagram of an embodiment of the method;

2b is a schematic diagram of an embodiment of the present invention for indicating interference by a feedback information bit of a dedicated physical control channel;

2c is a schematic diagram showing the energy level of the auxiliary pilot channel divided by the user equipment according to the present invention; FIG. 2d is a schematic diagram of an embodiment of the user equipment indicating interference by enhancing the uplink dedicated channel according to the present invention;

3 is a schematic flow chart of another embodiment of a method for controlling interference according to the present invention;

4 is a schematic flow chart of another embodiment of a method for controlling interference according to the present invention;

FIG. 5 is a schematic structural diagram of an embodiment of a micro base station according to the present invention; FIG.

6 is a schematic structural diagram of another embodiment of a 敖 base station according to the present invention;

7 is a schematic structural diagram of an embodiment of a user equipment according to the present invention;

8 is a schematic structural diagram of another embodiment of a user equipment according to the present invention;

9 is a schematic structural diagram of another embodiment of a user equipment according to the present invention;

FIG. 10 is a schematic structural diagram of an embodiment of a macro base station according to the present invention; FIG.

FIG. 11 is a schematic structural diagram of another embodiment of a macro base station according to the present invention. 1 is a schematic flowchart of an embodiment of an interference notification method according to the present invention. As shown in FIG. 1a, it may include:

Step S110: The micro base station detects a load condition of the micro base station.

In a specific implementation, the micro base station can detect and determine its load condition by counting the number of user equipments currently communicating with it.

Step S111, the micro base station dynamically sets the transmit power of the auxiliary pilot channel according to the detected load condition, and the micro base station broadcasts the auxiliary common pilot channel (A-CPICH, Assistant common pilot channel); The user equipment that detects the auxiliary pilot channel reports the detection result of the user equipment to the macro base station, so that the macro base station controls the interference caused by the user equipment to the micro base station.

In some feasible implementation manners, the micro base station may set the transmit power of the auxiliary pilot channel to increase or decrease according to the detected load condition, for example, when the micro base station detects that its load is relatively large. It can be considered that the interference of the user equipment (the user equipment that communicates with the macro base station) in the macro network received by the micro base station is relatively large. At this time, the micro base station can increase the transmission power of the broadcast auxiliary pilot channel, so that the detection can be performed. The number of user equipments to the auxiliary pilot channel is also increased (for example, almost all user equipments in the non-soft handover area of the micro base station can detect), therefore, the macro base station can cause more user equipments to the micro base station. The interference is controlled. When the micro base station detects that its load is relatively small, it can be considered that the interference of the user equipment in the macro network received by the micro base station is small. At this time, the micro base station can reduce the transmission power of the broadcast auxiliary pilot channel. Therefore, the user equipment that can detect the auxiliary pilot channel is also reduced (for example, only a small number of user equipments in the non-soft handover area of the micro base station that are highly interfered with the micro base station can detect), therefore, the macro base station can A small number of user equipments control interference caused by the micro base station. For example, the macro base station can perform interference control only on user equipments that cause severe interference to the micro base stations. Moreover, another advantage of the micro base station in reducing the transmit power of the broadcasted auxiliary pilot channel is that the power overhead of the auxiliary pilot channel can be reduced.

In some feasible implementation manners, the micro base station may broadcast the auxiliary pilot channel in multiple forms, for example, the micro base station may continuously broadcast the auxiliary pilot channel; or the micro base station periodically broadcasts the auxiliary a pilot channel; or, the micro base station broadcasts the auxiliary pilot channel at a specified irregular time interval. In some possible implementations, the auxiliary pilot channel of the present invention may be the primary common pilot channel

(P-CPICH, Primary Common Pilot Channel), from the Common Common Pilot Channel (S-CPICH), and the Synchronization Channel (SCH). In a specific implementation, the micro base station and the user equipment may pre-negotiate a time period of using the primary common pilot channel, the common pilot channel, and the synchronization channel as the auxiliary pilot channel, so that when the time period comes, Both the micro base station and the user equipment are aware that any one of the primary common pilot channel, the common pilot channel, and the synchronization channel is an auxiliary pilot channel.

In some feasible implementation manners, the auxiliary pilot channel of the present invention is a common common pilot channel, a common pilot channel, and a pilot channel other than the synchronization channel, which is identified by a channel identifier and a primary common pilot channel, and is public. The pilot channel and the synchronization channel are distinguished. For example, the auxiliary pilot channel as the pilot channel can be distinguished by using a different spreading factor or cell scrambling code from the primary common pilot channel, the common pilot channel, and the synchronization channel. In this case, when the auxiliary pilot channel of the present invention is a pilot channel, the slot format and bit sequence of the channel can still be combined with the slot format of the primary common pilot channel, the common pilot channel, and the synchronization channel (for example, The slot format shown by lb is the same as or different from the bit sequence (such as the bit sequence of Figure lc).

It can be seen that, in some possible implementation manners of the present invention, the 敖 base station detects a load condition of the 敖 base station; the micro base station broadcasts an auxiliary pilot channel according to the detected load condition, and the auxiliary pilot channel And transmitting, by the user equipment that detects the auxiliary pilot channel, the user equipment detection result to the macro base station, so that the macro base station pairs the user equipment The interference caused by the micro base station is controlled to effectively control the interference of the user equipment in the non-soft handover area of the micro base station to the micro base station.

2a is a schematic flow chart of an embodiment of a method for controlling interference according to the present invention. As shown in Figure 2a, it can include:

Step S210: The user equipment detects an auxiliary pilot channel broadcast by the micro base station.

In some feasible implementation manners, the user equipment determines whether the auxiliary pilot channel is detected by detecting a signal to interference ratio (SIR), for example, when the user equipment detects that the signal interference ratio is greater than a certain threshold, It is considered that the auxiliary pilot channel is detected (this method is applicable to the auxiliary pilot channel as the primary common pilot channel, the common pilot channel, the synchronization channel, and the auxiliary pilot channel is the primary common pilot channel). From the common pilot channel, the pilot channel other than the synchronization channel, which is distinguished from the primary common pilot channel, from the common pilot channel, and the synchronization channel by the unique channel identifier). Alternatively, the user equipment can detect the channel identifier unique to the auxiliary pilot channel. Determining whether the auxiliary pilot channel is detected, for example, when the spreading factor of the channel detected by the user equipment is a spreading factor unique to the auxiliary pilot channel, then the auxiliary pilot channel is considered to be detected (this method is suitable for assisting The pilot channel is a pilot channel other than the common pilot channel, the common pilot channel, and the synchronization channel, and is distinguished from the primary common pilot channel, the common pilot channel, and the synchronization channel by the unique channel identifier. In another implementation, the auxiliary pilot channel may also be detected by combining a spreading factor and a signal to interference ratio, for example, when the spreading factor of the measured channel is a spreading factor specific to the auxiliary pilot channel. It is further determined whether the signal to interference ratio reaches a certain threshold, and if so, it is considered that the auxiliary pilot channel is detected.

Step S211: The user equipment reports the detection result of the user equipment to the macro base station, so that the macro base station controls the interference caused by the user equipment to the micro base station.

In some implementations, the user equipment may send a Dedicated Physical Control Channel (DPCCH) to the macro base station, by using a feedback information bit (FBI bit) of the dedicated physical control channel. The macro base station reports interference caused by the user equipment to the micro base station. For example, as shown in FIG. 2b, when the FBI bit of the dedicated physical control channel sent by the user equipment to the macro base station is "0", it indicates that the user equipment does not cause interference to the micro base station, and when the user equipment sends the macro base station to the macro base station. When the FBI bit of the dedicated physical control channel sent is "1", it indicates that the user equipment interferes with the micro base station. Of course, in the specific implementation, the value of the FBI may be "1" only when the user equipment causes interference to the micro base station. When no interference is caused, no instructions can be given.

It can be seen that, in some feasible implementation manners of the present invention, the user equipment detects the auxiliary pilot channel broadcast by the micro base station; the user equipment reports the detection result of the user equipment to the macro base station, so that the macro base station The interference caused by the user equipment to the micro base station is controlled to effectively control interference of the user equipment in the non-soft handover area of the micro base station to the micro base station.

FIG. 3 is a schematic flow chart of an embodiment of a method for controlling interference according to the present invention. As shown in FIG. 3, it may include:

Step S310, the user equipment detects an auxiliary pilot channel broadcast by the micro base station.

In some feasible implementation manners, the user equipment determines whether the auxiliary pilot channel is detected by detecting a signal to interference ratio (SIR), for example, when the user equipment detects that the signal interference ratio is greater than a certain threshold, It is considered that the auxiliary pilot channel is detected (this method is applicable to the auxiliary pilot channel as the primary common pilot channel, the common pilot channel, the synchronization channel, and the auxiliary pilot channel is the primary common pilot channel). From the common pilot channel, the pilot channel outside the synchronization channel, through the unique channel identification and the primary common pilot channel, from the common pilot channel, the synchronization channel The case of line distinction). Alternatively, the user equipment can determine whether the auxiliary pilot channel is detected by detecting the channel identifier unique to the auxiliary pilot channel, for example, when the spreading factor of the channel detected by the user equipment is a spreading factor unique to the auxiliary pilot channel. In this case, it is considered that the auxiliary pilot channel is detected (this method is applicable to the auxiliary pilot channel as the primary common pilot channel, the common pilot channel, and the pilot channel other than the synchronization channel, which passes the unique channel identification and the main channel. Common pilot channel, case from common pilot channel, synchronization channel;).

Step S311: The user equipment divides the detected energy information of the auxiliary pilot channel into at least two levels. For example, as shown in FIG. 2c, the user equipment may use the detected energy information of the auxiliary pilot channel (including the received signal code power of the auxiliary pilot channel and/or the signal to noise ratio of the auxiliary pilot channel) according to the value. The difference is divided into 8 levels, of which the level "7" is the highest energy level, that is, the interference level is the largest, and the level "0" is the lowest energy level, that is, the interference level is the smallest. In this way, the user equipment can provide different control strengths to the macro base station according to different levels of reporting interference. For example, when the degree of interference is large, a larger control strength can be used, and the interference level is small, and a smaller control strength can be used.

Step S312, the user equipment may send an Enhanced Uplink Dedicated Channel (E-DCH) to the macro base station, and assist the user equipment by using a control bit of the enhanced uplink dedicated channel. The level of the energy information of the pilot channel is reported to the macro base station, so that the macro base station controls the interference caused by the user equipment to the micro base station according to the different levels.

For example, as shown in FIG. 2d, the user equipment may use the level signaling bits of the detected energy information of the auxiliary pilot channel (in FIG. 2d, !, X _{L n} ) and the original control bits of the enhanced uplink dedicated channel (FIG. 2d). Χ _κη2 , Χ _κη1 , and X _tfcl , ₇ , X _tfcl , 2 , X _tfcl , ! ) are multiplexed and combined after multiplexing, if the level signaling bits are η bits, then E- The coding mode of the DCH can be (30, 10+η), then channel mapping is performed after encoding, and finally transmitted to the E-DCH channel.

It can be seen that, in some feasible implementation manners of the present invention, the user equipment detects the auxiliary pilot channel broadcast by the micro base station; the user equipment reports the detection result of the user equipment to the macro base station, so that the macro base station Controlling interference caused by the user equipment to the micro base station. To effectively control the interference of the user equipment in the non-soft handover area of the micro base station to the micro base station.

4 is a schematic flow chart of another embodiment of a method for controlling interference according to the present invention. As shown in FIG. 4, it may include:

Step S410: The macro base station receives a detection result of the user equipment to the auxiliary pilot channel of the micro base station. In some feasible implementation manners, the user equipment may send a dedicated physical control to the macro base station. Channels, the interference caused by the user equipment to the micro base station is reported to the macro base station by a feedback information bit (FBI bit) of the dedicated physical control channel. For example, as shown in FIG. 2b, when the FBI bit of the dedicated physical control channel sent by the user equipment to the macro base station is "0", it indicates that the user equipment does not cause interference to the micro base station, and when the user equipment sends the macro base station to the macro base station. When the FBI bit of the dedicated physical control channel sent is "1", it indicates that the user equipment interferes with the micro base station. Of course, in the specific implementation, the value of the FBI may be "1" only when the user equipment causes interference to the micro base station. When no interference is caused, no instructions can be given. In this way, when the macro base station receives the dedicated physical control channel sent by the user equipment, and the value of the feedback information bit (FBI bit) of the dedicated physical control channel is "0" or "1", it is considered that the user equipment pair is received. The detection result of the auxiliary pilot channel of the micro base station.

In some possible implementations, the user equipment may divide the detected energy information of the auxiliary pilot channel into at least two levels. For example, as shown in FIG. 2c, the user equipment may use the detected energy information of the auxiliary pilot channel (including the received signal code power of the auxiliary pilot channel and/or the signal to noise ratio of the auxiliary pilot channel) according to the value. The difference is divided into 8 levels, of which the level "7" is the highest energy level, that is, the interference level is the largest, and the level "0" is the lowest energy level, that is, the interference level is the smallest. In this way, the user equipment can provide different control strengths to the macro base station according to different levels of reporting interference. For example, when the interference level is large, a large control strength can be used, and the interference level is small, and a small control strength can be used. And the user equipment may send an enhanced uplink dedicated channel to the macro base station, and report the level of energy information of the auxiliary pilot channel detected by the user equipment to the control bit of the enhanced uplink dedicated channel. The macro base station is configured to enable the macro base station to control interference caused by the user equipment to the micro base station according to the different levels. For example, as shown in Figure 2.3, the user equipment can set the level signaling bits of the energy information of the detected auxiliary pilot channel (in Figure 2.3, !,

, _n ) and the original control bits of the enhanced uplink dedicated channel (Χ _κη2 , _{κ κη1} , and X _tfci , ₇ , ... , X _tfcl , 2 , X _tfcl , i ) in Figure 2.3 are multiplexed before encoding. . In this way, when the macro base station receives the enhanced uplink dedicated channel sent by the user equipment, and the control bit of the enhanced uplink dedicated channel takes any value from "0" to "7", it is considered that the user equipment is received. The detection result of the auxiliary pilot channel of the base station.

Step S411: The macro base station controls, according to the received detection result, interference caused by the user equipment to the micro base station.

In some feasible implementation manners, the macro base station may perform interference control on the user equipment that interferes with the micro base station by using an existing interference control mechanism, such as performing an RG down command on the user equipment or limiting the scheduling rate of the user equipment. . In addition, when the user equipment reports the interference level, the macro base station performs different interferences on the micro base station by the user equipment according to the different levels. Control of strength.

It can be seen that, in some possible implementation manners of the present invention, the macro base station receives a detection result of the auxiliary pilot channel of the user equipment to the micro base station; and the macro base station compares the received detection result to the user equipment. The interference caused by the micro base station is controlled. To effectively control the interference of the user equipment in the non-soft switching area of the micro base station to the micro base station.

Accordingly, the present invention provides apparatus embodiments that can be used to implement the various methods described above, and the apparatus embodiments of the present invention are described in detail below.

FIG. 5 is a schematic structural diagram of an embodiment of a 敖 base station according to the present invention. As shown in FIG. 5, it may include: a detecting module 51 and a broadcasting module 52, wherein:

The detecting module 51 is configured to detect a load condition of the micro base station.

In a specific implementation, the micro base station can detect the number of user equipments currently communicating with it through its detection module 51 and determine its load condition.

a broadcast module 52, configured to broadcast an auxiliary pilot channel according to a load condition detected by the detecting module 51, where a transmit power of the auxiliary pilot channel is dynamically set according to a load of the micro base station, so that the auxiliary guide is detected. The user equipment of the frequency channel reports the detection result of the user equipment to the macro base station, so that the macro base station controls the interference caused by the user equipment to the micro base station. In some feasible implementation manners, the micro base station may set the transmit power of the auxiliary pilot channel to increase or decrease according to the detected load condition, for example, when the micro base station detects that its load is relatively large. It can be considered that the interference of the user equipment in the macro network received by the micro base station is relatively large. At this time, the micro base station can increase the transmission power of the broadcast auxiliary pilot channel, so that the user equipment of the auxiliary pilot channel can be detected. In other words, it can be detected (for example, almost all user equipments in the non-soft handover area of the micro base station can detect), therefore, the macro base station can control interference caused by more user equipments to the micro base station; When it is detected that the load is relatively small, it can be considered that the interference of the user equipment in the macro network received by the micro base station is small. At this time, the micro base station can reduce the transmission power of the broadcast auxiliary pilot channel, so that the detection can be detected. The user equipment of the auxiliary pilot channel is also reduced (for example, only a small amount of interference to the micro base station in the non-soft handover area of the micro base station is large. User device to detect), thus the macro base station can control the amount of interference for the user equipment caused by the micro base station, e.g., only macro base station may cause serious interference user equipment micro base station interference control. Moreover, another advantage of the micro base station in reducing the transmit power of the broadcast auxiliary pilot channel is that the power overhead of the auxiliary pilot channel can be reduced.

In some feasible implementation manners, the 敖 base station can use various forms of broadcast auxiliary by the broadcast module 52. The pilot channel 52, for example, the broadcast module 52 can continuously broadcast the auxiliary pilot channel; or the broadcast module 52 periodically broadcasts the auxiliary pilot channel; or the broadcast module 52 does not specify The auxiliary pilot channel is broadcast at regular intervals.

In some possible implementations, the auxiliary pilot channel of the present invention may be the primary common pilot channel

In some feasible implementation manners, the auxiliary pilot channel of the present invention is a pilot channel other than a common pilot channel, a common pilot channel, and a synchronization channel, and the unique common channel identifier and the primary common pilot channel, Distinguish from the common pilot channel and the synchronization channel. For example, the auxiliary pilot channel as the pilot channel can be distinguished by using a different spreading factor or a cell scrambling code from the primary common pilot channel, the common pilot channel, and the synchronization channel. In this case, when the auxiliary pilot channel of the present invention is a pilot channel, the slot format and bit sequence of the channel can still be combined with the slot format of the primary common pilot channel, the common pilot channel, and the synchronization channel (for example, The slot format shown by lb is the same as or different from the bit sequence (such as the bit sequence of Figure lc).

FIG. 6 is a schematic structural diagram of another embodiment of a 敖 base station according to the present invention. As shown in FIG. 6, it may include a processor 61 (in a specific implementation, which may be a central processing unit CPU), and the processor 61 performs the following steps:

Detecting a load condition of the micro base station;

Broadcasting an auxiliary pilot channel according to the detected load condition, and the transmit power of the auxiliary pilot channel is dynamically set according to the load of the micro base station; so that the user equipment that detects the auxiliary pilot channel will use the user The device detection result is reported to the macro base station, so that the macro base station is opposite to the user equipment. The interference caused by the micro base station is controlled.

In some possible implementations, the processor 61 can detect and determine the load condition of the micro base station by counting the number of user equipments currently communicating with the 敖 base station. In some feasible implementation manners, the processor 61 may set the transmit power of the auxiliary pilot channel to increase or decrease according to the detected load condition of the micro base station, for example, when detecting the load of the micro base station. When it is relatively large, it can be considered that the interference of the user equipment in the macro network received by the micro base station is relatively large. At this time, the processor 61 can increase the transmission power of the broadcast auxiliary pilot channel, so that the auxiliary pilot can be detected. The number of user equipments of the channel is also increased (for example, almost all user equipments in the non-soft handover area of the micro base station can detect), and therefore, the macro base station can control interference caused by more user equipments to the micro base station; When the processor 61 detects that the load of the micro base station is relatively small, it can be considered that the interference of the user equipment in the macro network received by the micro base station is small. At this time, the processor can reduce the transmission of the broadcast auxiliary pilot channel. Power, so that the user equipment that can detect the auxiliary pilot channel is reduced (for example, only a small number of pairs in the non-soft handover area of the micro base station) The user equipment that is interfered by the base station can detect the interference. Therefore, the macro base station can control the interference caused by the small number of user equipments on the micro base station. For example, the macro base station can only interfere with the user equipment that causes serious interference to the micro base station. control. Also, another benefit of the processor 61 reducing the transmit power of the broadcasted auxiliary pilot channel is that the power overhead of the auxiliary pilot channel can be reduced.

In some feasible implementation manners, the 敖 base station may broadcast the auxiliary pilot channel in multiple forms by the processor 61, for example, the processor 61 may continuously broadcast the auxiliary pilot channel; or, the processor 61 cycles The auxiliary pilot channel is broadcastably; or the processor 61 broadcasts the auxiliary pilot channel at a specified time interval.

In some feasible implementation manners, the auxiliary pilot channel of the present invention is a common common pilot channel, a common pilot channel, and a pilot channel other than the synchronization channel, which has a unique channel identifier and a primary common channel. The frequency channel is distinguished from the common pilot channel and the synchronization channel. For example, the auxiliary pilot channel as the pilot channel can be distinguished by using different spreading factors or cell scrambling codes from the primary common pilot channel, the common pilot channel, and the synchronization channel. In this case, when the auxiliary pilot channel of the present invention is a pilot channel, the slot format and bit sequence of the channel can still be combined with the slot format of the primary common pilot channel, the common pilot channel, and the synchronization channel (for example, The slot format shown by lb is the same as or different from the bit sequence (such as the bit sequence of Figure lc).

FIG. 7 is a schematic structural diagram of an embodiment of a user equipment according to the present invention. As shown in FIG. 7, it may include: a detection module 71 and a transmission module 72, where:

The detecting module 71 is configured to detect an auxiliary pilot channel broadcast by the micro base station.

The sending module 72 is configured to report the detection result of the detecting module 71 to the macro base station, so that the macro base station controls the interference caused by the user equipment to the micro base station.

In some feasible implementation manners, the detecting module 71 may determine whether the auxiliary pilot channel is detected by detecting a signal to interference ratio (SIR), for example, when the detecting module 71 detects that the signal to interference ratio is greater than a certain threshold. For the value, it is considered that the auxiliary pilot channel is detected (this manner is applicable to the auxiliary pilot channel as the primary common pilot channel, from the common pilot channel, the synchronization channel, and the auxiliary pilot channel is the primary public). Pilot channel, pilot channel other than the common pilot channel, and the synchronization channel, which is distinguished from the primary common pilot channel by the unique channel identifier, from the common pilot channel, and the synchronization channel). Alternatively, the detecting module 71 may determine whether the auxiliary pilot channel is detected by detecting the channel identifier unique to the auxiliary pilot channel, for example, when the spreading factor of the channel detected by the detecting module 71 is a specific extension of the auxiliary pilot channel. When the frequency factor is used, it is considered that the auxiliary pilot channel is detected (this method is applicable to the auxiliary pilot channel as the primary common pilot channel, the common pilot channel, and the pilot channel except the synchronization channel, which passes the unique channel identification. The case of distinguishing from the primary common pilot channel, from the common pilot channel, and the synchronization channel).

In some feasible implementation manners, the sending module 72 may specifically send a dedicated physical control channel to the macro base station, and report the user equipment pair to the macro base station by using a feedback information bit (FBI bit) of the dedicated physical control channel. The interference caused by the micro base station. For example, as shown in FIG. 2b, when the FBI bit of the dedicated physical control channel sent by the user equipment to the macro base station is "0", it indicates that the user equipment does not cause interference to the micro base station, and when the user equipment sends the macro base station to the macro base station. When the FBI bit of the dedicated physical control channel sent is "1", it indicates that the user equipment interferes with the micro base station. Of course, in the specific implementation, the value of the FBI may be "1" only when the user equipment causes interference to the micro base station. When no interference is caused, no instructions can be given. It can be seen that, in some feasible implementation manners of the present invention, the user equipment detects the auxiliary pilot channel broadcast by the micro base station; the user equipment reports the detection result of the user equipment to the macro base station, so that the macro base station Controlling interference caused by the user equipment to the micro base station. The interference of the user equipment in the non-soft handover area of the micro base station to the micro base station is effectively controlled.

FIG. 8 is a schematic structural diagram of another embodiment of a user equipment according to the present invention. As shown in FIG. 8, it may include: a detecting module 81, a dividing module 82, and a sending module 83, where:

The detecting module 81 is configured to detect an auxiliary pilot channel broadcast by the micro base station.

The dividing module 82 is configured to divide the detected energy information of the auxiliary pilot channel into at least two levels.

The sending module 83 is configured to report the level of the energy information of the auxiliary pilot channel to the macro base station, so that the macro base station controls the interference caused by the user equipment to the micro base station.

In some feasible implementation manners, in some feasible implementation manners, the detecting module 81 may determine whether an auxiliary pilot channel is detected by detecting a Signal to Interference Ratio (SIR), for example, when the detecting module 81 detects If the signal to interference ratio is greater than a certain threshold, it is considered that the auxiliary pilot channel is detected (this method is applicable to the auxiliary pilot channel as the primary common pilot channel, the common pilot channel, and the synchronization channel. The auxiliary pilot channel is a pilot channel other than a common pilot channel, a common pilot channel, and a synchronization channel, and is distinguished from a primary common pilot channel, a common pilot channel, and a synchronization channel by a unique channel identifier. Situation). Alternatively, the detecting module 81 may determine whether the auxiliary pilot channel is detected by detecting the channel identifier unique to the auxiliary pilot channel, for example, when the spreading factor of the channel detected by the detecting module 81 is a specific extension of the auxiliary pilot channel. When the frequency factor is used, it is considered that the auxiliary pilot channel is detected (this method is applicable to the auxiliary pilot channel as the primary common pilot channel, the common pilot channel, and the pilot channel except the synchronization channel, which passes the unique channel identification. The case of distinguishing from the primary common pilot channel, from the common pilot channel, and the synchronization channel).

In some possible implementations, the partitioning module 82 divides the detected energy information of the auxiliary pilot channel into at least two levels. For example, as shown in FIG. 2c, the dividing module 82 may take the energy information of the detected auxiliary pilot channel (including the received signal code power of the auxiliary pilot channel and/or the signal to noise ratio of the auxiliary pilot channel) according to The value is divided into 8 levels, of which the level "7" is the highest energy level, that is, the interference level is the largest, and the level "0" is the lowest energy level, that is, the interference level is the smallest. In this way, the transmitting module 83 can provide different control strengths to the macro base station according to different levels of reporting interference. For example, when the interference level is large, a large control strength can be used, and the interference level is small, and a small control strength can be used. At this time, the sending module 83 may specifically send an enhanced uplink dedicated message to the macro base station. And reporting, to the macro base station, a level of dividing the energy information of the auxiliary pilot channel by the dividing module 82 by using control bits of the enhanced uplink dedicated channel, so that the macro base station according to the different level Controlling interference caused by the user equipment to the micro base station. For example, as shown in FIG. 2d, the sending module 83 can set the level signaling bits of the detected energy information of the auxiliary pilot channel (Χι, 1 , ..., Χι, η in Figure 2.3) and the enhanced uplink dedicated channel. The control bits (X _Kn2 , X _rsn !, and X _tfcl , ₇ , X _tfcl , 2 , X _tfcl , i in Figure 2d ) are multiplexed before encoding.

FIG. 9 is a schematic structural diagram of another embodiment of a user equipment according to the present invention. As shown in FIG. 9, it may include: a processor 91 (which may be a central processing unit CPU in a specific implementation) and a transmitter 92 (in a specific implementation, a transmitting device such as an antenna), where:

The processor 91 is configured to detect an auxiliary pilot channel broadcast by the micro base station.

The transmitter 92 is configured to report the detection result of the processor to the macro base station, so that the macro base station controls the interference caused by the user equipment to the micro base station.

In some feasible implementation manners, the detecting module 91 can determine whether the auxiliary pilot channel is detected by detecting a signal to interference ratio (SIR), for example, when the detecting module 91 detects that the signal to interference ratio is greater than a certain threshold. For the value, it is considered that the auxiliary pilot channel is detected (this manner is applicable to the auxiliary pilot channel as the primary common pilot channel, from the common pilot channel, the synchronization channel, and the auxiliary pilot channel is the primary public). Pilot channel, pilot channel other than the common pilot channel, and the synchronization channel, which is distinguished from the primary common pilot channel by the unique channel identifier, from the common pilot channel, and the synchronization channel). Alternatively, the detecting module 91 can determine whether the auxiliary pilot channel is detected by detecting the channel identifier unique to the auxiliary pilot channel, for example, when the spreading factor of the channel detected by the detecting module 91 is a specific extension of the auxiliary pilot channel. When the frequency factor is used, it is considered that the auxiliary pilot channel is detected (this method is applicable to the auxiliary pilot channel as the primary common pilot channel, the common pilot channel, and the pilot channel except the synchronization channel, which passes the unique channel identification. The case of distinguishing from the primary common pilot channel, from the common pilot channel, and the synchronization channel).

In some feasible implementation manners, the transmitter 92 may specifically send a dedicated physical control channel to the macro base station, and report the user to the macro base station by using a feedback information bit (FBI bit) of the dedicated physical control channel. The interference caused by the device to the micro base station. For example, as shown in Figure 2b, when the user sets When the FBI bit of the dedicated physical control channel sent by the macro base station is "0", it indicates that the user equipment does not cause interference to the micro base station, and the FBI bit of the dedicated physical control channel sent by the user equipment to the macro base station is taken. When the value is "1", it indicates that the user equipment interferes with the micro base station. Of course, in the specific implementation, the value of the FBI may be "1" only when the user equipment causes interference to the micro base station. When no interference is caused, no instructions can be given.

In some possible implementations, the processor 91 is further configured to divide energy information of the auxiliary pilot channel detected by the detecting module into at least two levels. The transmitter 92 is specifically configured to send an enhanced uplink dedicated channel to the macro base station, and report the level of energy information of the auxiliary pilot channel detected by the user equipment to the control bit of the enhanced uplink dedicated channel. The macro base station is configured to enable the macro base station to control interference caused by the user equipment to the micro base station according to the different levels. For example, as shown in FIG. 2c, the processor 91 may take the energy information of the detected auxiliary pilot channel (including the received signal code power of the auxiliary pilot channel and/or the signal to noise ratio of the auxiliary pilot channel) according to The value is divided into 8 levels, of which the level "7" is the highest energy level, that is, the interference level is the largest, and the level "0" is the lowest energy level, that is, the interference level is the smallest. In this way, the transmitter 92 can provide different control strengths to the macro base station according to different levels of reporting interference. For example, when the interference level is large, a large control force can be used, and the interference level is small, and a small control force can be used. At this time, the transmitter 92 may specifically send an enhanced uplink dedicated channel to the macro base station, and divide the energy information of the auxiliary pilot channel by the processor 91 by using the control bit of the enhanced uplink dedicated channel. Reporting to the macro base station, so that the macro base station controls interference caused by the user equipment to the micro base station according to the different levels. For example, as shown in FIG. 2d, the transmitter 92 may use the level signaling bits of the detected energy information of the auxiliary pilot channel (in FIG. 2d, !, X _{L n} ) and the original control bits of the enhanced uplink dedicated channel (FIG. 2d). X _rsn2 , X _rsnl , and X _tfci , 7 , X _tfci , 2 , X _tfci , ! in _2.3 are multiplexed before encoding.

FIG. 10 is a schematic structural diagram of an embodiment of a macro base station according to the present invention. As shown in FIG. 10, it may include: a receiving module 101 and a control module 102, wherein:

The receiving module 101 is configured to receive a detection result of the auxiliary pilot channel of the user equipment to the micro base station, where the control module 102 is configured to perform interference on the micro base station by the user equipment according to the detection result received by the receiving module 101. Take control.

In some implementations, the user equipment may send a dedicated physical control channel to the macro base station, and report the user equipment pair to the macro base station by using a feedback information bit (FBI bit) of the dedicated physical control channel. The interference caused by the micro base station. For example, as shown in Figure 2b, when the user device When the FBI bit of the dedicated physical control channel sent by the macro base station is "0", it indicates that the user equipment does not cause interference to the micro base station, and the value of the FBI bit of the dedicated physical control channel sent by the user equipment to the macro base station is When "1", it indicates that the user equipment interferes with the micro base station. Of course, in the specific implementation, the value of the FBI may be "1" only when the user equipment causes interference to the micro base station. When no interference is caused, no instructions can be given. In this way, when the receiving module 101 of the macro base station receives the dedicated physical control channel sent by the user equipment, and the value of the feedback information bit (FBI bit) of the dedicated physical control channel is "0" or "1", it is considered to be received. The detection result of the user equipment to the auxiliary pilot channel of the micro base station is obtained.

In some possible implementations, the user equipment may divide the detected energy information of the auxiliary pilot channel into at least two levels. For example, as shown in FIG. 2c, the user equipment may use the detected energy information of the auxiliary pilot channel (including the received signal code power of the auxiliary pilot channel and/or the signal to noise ratio of the auxiliary pilot channel) according to the value. The difference is divided into 8 levels, of which the level "7" is the highest energy level, that is, the interference level is the largest, and the level "0" is the lowest energy level, that is, the interference level is the smallest. In this way, the user equipment can provide different control strengths to the macro base station according to different levels of reporting interference. For example, when the interference level is large, a large control strength can be used, and the interference level is small, and a small control strength can be used. And the user equipment may send an enhanced uplink dedicated channel to the macro base station, and report the level of energy information of the auxiliary pilot channel detected by the user equipment to the control bit of the enhanced uplink dedicated channel. The macro base station is configured to enable the macro base station to control interference caused by the user equipment to the micro base station according to the different levels. For example, as shown in Figure 2d, the user equipment can set the level signaling bits of the energy information of the detected auxiliary pilot channel (in Figure 2d, !,

^;! The original control bits of the enhanced uplink dedicated channel (Χ _κη2 , Χ _κη1 , and X _tfci , 7 , . . . , X _tfci , 2 , X _tfcl , i ) in FIG. 2d are multiplexed before encoding. In this way, when the receiving module 101 of the macro base station receives the enhanced uplink dedicated channel sent by the user equipment, and the control bit of the enhanced uplink dedicated channel takes any value from "0" to "7", it is considered to have received The detection result of the user equipment to the auxiliary pilot channel of the micro base station.

In some feasible implementation manners, the control module 102 may interfere with the user equipment that interferes with the micro base station by using an existing interference control mechanism, such as performing an RG down command on the user equipment or limiting the scheduling rate of the user equipment. control. In addition, when the user equipment reports the interference level, the control module 102 performs different strength control on the interference caused by the user equipment to the micro base station according to the different levels.

It can be seen that, in some feasible implementation manners of the present invention, the macro base station receives the user equipment pair micro a detection result of the auxiliary pilot channel of the base station; the macro base station controls, according to the received detection result, interference caused by the user equipment to the micro base station. The interference of the user equipment in the non-soft handover area of the micro base station to the micro base station is effectively controlled.

FIG. 11 is a schematic structural diagram of another embodiment of a macro base station according to the present invention. As shown in FIG. 11, it may include: a receiver 121 (which may be a transceiver device such as an antenna) and a processor 122 (which may be a central processing unit CUP), where:

The receiver 121 is configured to receive a detection result of the auxiliary pilot channel of the user equipment to the micro base station, where the processor 122 is configured to perform interference on the micro base station by the user equipment according to the detection result received by the receiver 121. Take control.

In some implementations, the user equipment may send a dedicated physical control channel to the macro base station, and report the user equipment pair to the macro base station by using a feedback information bit (FBI bit) of the dedicated physical control channel. The interference caused by the micro base station. For example, as shown in FIG. 2b, when the FBI bit of the dedicated physical control channel sent by the user equipment to the macro base station is "0", it indicates that the user equipment does not cause interference to the micro base station, and when the user equipment sends the macro base station to the macro base station. When the FBI bit of the dedicated physical control channel sent is "1", it indicates that the user equipment interferes with the micro base station. Of course, in the specific implementation, the value of the FBI may be "1" only when the user equipment causes interference to the micro base station. If there is no interference, no instructions can be given. In this way, when the receiver 121 of the macro base station receives the dedicated physical control channel sent by the user equipment, and the value of the feedback information bit (FBI bit) of the dedicated physical control channel is "0" or "1", it is considered to be received. The detection result of the user equipment to the auxiliary pilot channel of the micro base station is obtained.

In some possible implementations, the user equipment may divide the detected energy information of the auxiliary pilot channel into at least two levels. For example, as shown in FIG. 2c, the user equipment may use the detected energy information of the auxiliary pilot channel (including the received signal code power of the auxiliary pilot channel and/or the signal to noise ratio of the auxiliary pilot channel) according to the value. The difference is divided into 8 levels, of which the level "7" is the highest energy level, that is, the interference level is the largest, and the level "0" is the lowest energy level, that is, the interference level is the smallest. In this way, the user equipment can provide different control strengths to the macro base station according to different levels of reporting interference. For example, when the interference level is large, a large control strength can be used, and the interference level is small, and a small control strength can be used. And the user equipment may send an enhanced uplink dedicated channel to the macro base station, and report the level of energy information of the auxiliary pilot channel detected by the user equipment to the control bit of the enhanced uplink dedicated channel. The macro base station is configured to enable the macro base station to control interference caused by the user equipment to the micro base station according to the different levels. For example, as shown in Figure 2d, user equipment The level signaling bits of the detected energy information of the auxiliary pilot channel (in Figure 2d, !, ^;!) and the original control bits of the enhanced uplink dedicated channel (Χ _κη2 , Χ _{κη1 in} Figure 2d, and X _tfci , 7 , . . . , X _tfci , 2 , X _tfci , ! ) are multiplexed before encoding. Thus, when the receiver 121 of the macro base station receives the enhanced uplink dedicated channel sent by the user equipment, and the enhanced uplink When the control bit of the dedicated channel is any one of "0" to "7", it is considered that the detection result of the user equipment to the auxiliary pilot channel of the micro base station is received.

In some feasible implementation manners, the processor 122 may interfere with the user equipment that interferes with the micro base station by using an existing interference control mechanism, such as performing an RG down command on the user equipment or limiting the scheduling rate of the user equipment. control. In addition, when the user equipment reports the interference level, the processor 122 performs different strength control on the interference caused by the user equipment to the micro base station according to the different levels.

In addition, the present invention also provides an interference control system, which is composed of the aforementioned micro base station, user equipment and macro base station of the present invention.

In a specific implementation, the present invention further provides a computer storage medium, wherein the computer storage medium may store a program, and each embodiment of the method for notifying the interference provided by the present invention and/or the method for controlling the interference may be included when the program is executed. Some or all of the steps. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM). The spirit and scope of the Ming. Thus, it is intended that the present invention cover the modifications and variations of the inventions

Claims

Rights request

1. An interference notification method, characterized by including:

The micro base station detects the load condition of the micro base station;

The micro base station dynamically sets the transmission power of the auxiliary pilot channel according to the detected load condition, and the micro base station broadcasts the auxiliary pilot channel, so that the user equipment that detects the auxiliary pilot channel will transmit the auxiliary pilot channel. The user equipment detection result is reported to the macro base station, so that the macro base station controls the interference caused by the user equipment to the micro base station.

2. The interference notification method according to claim 1, wherein the micro base station broadcasting the auxiliary pilot channel includes:

The micro base station continuously broadcasts the auxiliary pilot channel;

Or, the micro base station periodically broadcasts the auxiliary pilot channel;

Alternatively, the micro base station broadcasts the auxiliary pilot channel at specified irregular time intervals.

3. The interference notification method according to claim 1 or 2, characterized in that the auxiliary pilot channel is any one of a main common pilot channel, a slave common pilot channel, and a synchronization channel.

4. The interference notification method according to claim 1 or 2, characterized in that the auxiliary pilot channel is a pilot channel other than a main common pilot channel, a slave common pilot channel, and a synchronization channel, and is passed through The channel identifier is distinguished from the main common pilot channel, the slave common pilot channel, and the synchronization channel.

5. An interference control method, characterized by including:

The user equipment detects the auxiliary pilot channel broadcast by the micro base station;

6. The interference control method according to claim 5, wherein the user equipment reporting the detection result of the user equipment to the macro base station includes:

The user equipment sends a dedicated physical control channel to the macro base station, and reports the interference caused by the user equipment to the micro base station to the macro base station through the feedback information bit of the dedicated physical control channel.

7. The interference control method according to claim 5, characterized in that the user equipment reports the detection result of the user equipment to a macro base station, so that the macro base station responds to the user equipment to the micro base station. Controlling interference caused by base stations includes:

The user equipment divides the detected energy information of the auxiliary pilot channel into at least two equal parts. class;

The user equipment sends the enhanced uplink dedicated channel to the macro base station, and reports the level of the energy information of the auxiliary pilot channel detected by the user equipment to the macro base station by using the control bits of the enhanced uplink dedicated channel. , so that the macro base station controls the interference caused by the user equipment to the micro base station according to the different levels.

8. The interference control method according to claim 7, wherein the capability information of the auxiliary pilot channel includes the received signal code power of the auxiliary pilot channel and/or the signal number of the auxiliary pilot channel. noise ratio.

9. An interference control method, characterized by including:

The macro base station receives the detection result of the auxiliary pilot channel of the micro base station from the user equipment;

The macro base station controls the interference caused by the user equipment to the micro base station according to the received detection result.

10. The interference control method according to claim 9, characterized in that the detection results of the auxiliary pilot channel of the micro base station received by the macro base station from the user equipment include:

The macro base station receives the dedicated physical control channel sent by the user equipment to the macro base station, and the feedback information bit of the dedicated physical control channel reports the interference caused by the user equipment to the micro base station.

11. The interference control method according to claim 9, wherein the detection results of the auxiliary pilot channel of the micro base station received by the macro base station from the user equipment include:

The macro base station receives the enhanced uplink dedicated channel sent by the user equipment to the macro base station, and multiplexes the level of the energy information of the auxiliary pilot channel detected by the user equipment in the control bits of the enhanced uplink dedicated channel;

The macro base station controlling the interference caused by the user equipment to the micro base station according to the received detection result includes:

The macro base station controls the interference caused by the user equipment to the micro base station according to the different levels.

12. A micro base station, characterized by including:

A detection module, used to detect the load condition of the micro base station;

A broadcast module, configured to dynamically set the transmission power of the auxiliary pilot channel according to the detected load condition, and broadcast the auxiliary pilot channel; so that the user equipment that detects the auxiliary pilot channel will transmit the auxiliary pilot channel to the user equipment. The detection results are reported to the macro base station, so that the macro base station controls the interference caused by the user equipment to the micro base station.

13. The micro base station according to claim 12, characterized in that, the broadcast module is specifically configured to continuously broadcast the auxiliary pilot channel; or, broadcast the auxiliary pilot channel periodically; or, according to the specified The auxiliary pilot channel is broadcast at irregular time intervals.

14. The micro base station according to claim 12 or 13, wherein the auxiliary pilot channel is any one of a main common pilot channel, a slave common pilot channel, and a synchronization channel.

15. The micro base station according to claim 12 or 13, wherein the auxiliary pilot channel is a pilot channel other than a main public pilot channel, a slave public pilot channel, and a synchronization channel, and is identified by a channel It is distinguished from the main common pilot channel, the slave common pilot channel and the synchronization channel.

16. A user equipment, characterized by: including:

A detection module used to detect the auxiliary pilot channel broadcast by the micro base station;

The sending module is configured to report the detection result of the detection module to the macro base station, so that the macro base station controls the interference caused by the user equipment to the micro base station.

17. The user equipment according to claim 16, wherein the sending module is specifically configured to send a dedicated physical control channel to the macro base station, and transmit the feedback information bits of the dedicated physical control channel to the macro base station. Report interference caused by the user equipment to the micro base station.

18. The user equipment according to claim 16, further comprising:

A dividing module, configured to divide the energy information of the auxiliary pilot channel detected by the detection module into at least two levels;

The sending module is specifically configured to send an enhanced uplink dedicated channel to the macro base station, and report the level of the energy information of the auxiliary pilot channel detected by the user equipment to the user equipment by using the control bits of the enhanced uplink dedicated channel. The macro base station is configured to control the interference caused by the user equipment to the micro base station according to the different levels.

19. The user equipment according to claim 18, wherein the capability information of the auxiliary pilot channel includes the received signal code power of the auxiliary pilot channel and/or the signal-to-noise ratio of the auxiliary pilot channel. .

20. A macro base station, characterized by including:

The receiving module is used to receive the detection result of the auxiliary pilot channel of the micro base station by the user equipment; the control module is used to control the interference caused by the user equipment to the micro base station according to the received detection result.

21. The macro base station according to claim 20, wherein the receiving module is specifically configured to receive a dedicated physical control channel sent by the user equipment to the macro base station, and the dedicated physical control channel The feedback information bit reports the interference caused by the user equipment to the micro base station.

22. The macro base station according to claim 20, wherein the receiving module is specifically configured to receive an enhanced uplink dedicated channel sent by the user equipment to the macro base station, and the control bits of the enhanced uplink dedicated channel are complex The level of the energy information of the auxiliary pilot channel detected by the user equipment is used; the control module is specifically configured to control the interference caused by the user equipment to the micro base station according to the different levels.

23. An interference control system, characterized by comprising: the micro base station according to any one of claims 12-15, and the user equipment according to any one of claims 16-19, and The macro base station according to any one of claims 20-22.

24. A micro base station, characterized in that it includes a processor, and the processor performs the following steps: detecting the load condition of the micro base station;

Dynamically set the transmit power of the auxiliary pilot channel according to the detected load condition;

Broadcast the auxiliary pilot channel, so that the user equipment that detects the auxiliary pilot channel reports the user equipment detection result to the macro base station, so that the macro base station can detect the interference caused by the user equipment to the micro base station. control.

25. The micro base station according to claim 24, wherein the processor performing broadcasting of the auxiliary pilot channel specifically includes:

the processor continuously broadcasts the auxiliary pilot channel;

Alternatively, the processor periodically broadcasts the auxiliary pilot channel;

Alternatively, the processor broadcasts the auxiliary pilot channel at specified irregular time intervals.

26. The micro base station according to claim 24 or 25, wherein the auxiliary pilot channel is any one of a main common pilot channel, a slave common pilot channel, and a synchronization channel.

27. The micro base station according to claim 24 or 25, wherein the auxiliary pilot channel is a pilot channel other than a main common pilot channel, a slave common pilot channel, and a synchronization channel, and is identified by a channel It is distinguished from the main common pilot channel, the slave common pilot channel and the synchronization channel.

28. A user equipment, characterized in that it includes: a processor and a transmitter, wherein: the processor is used to detect the auxiliary pilot channel broadcast by the micro base station;

The transmitter is configured to report the detection result of the processor to the macro base station, so that the macro base station controls the interference caused by the user equipment to the micro base station.

29. The user equipment according to claim 28, wherein the transmitter is specifically configured to send a dedicated physical control channel to the macro base station, through the feedback information bits of the dedicated physical control channel Report interference caused by the user equipment to the micro base station to the macro base station.

30. The user equipment according to claim 28, wherein the processor is further configured to divide the energy information of the auxiliary pilot channel detected by the detection module into at least two levels;

The transmitter is specifically configured to send an enhanced uplink dedicated channel to the macro base station, and report the level of the energy information of the auxiliary pilot channel detected by the user equipment to the user equipment by using the control bits of the enhanced uplink dedicated channel. The macro base station is configured to control the interference caused by the user equipment to the micro base station according to the different levels.

31. The user equipment according to claim 30, wherein the capability information of the auxiliary pilot channel includes the received signal code power of the auxiliary pilot channel and/or the signal-to-noise ratio of the auxiliary pilot channel. .

32. A macro base station, characterized by including a receiver and a processor, wherein:

The receiver is used to receive the detection result of the auxiliary pilot channel of the micro base station by the user equipment; the processor is used to control the interference caused by the user equipment to the micro base station according to the detection result received by the receiver.

33. The macro base station according to claim 32, wherein the receiver is specifically configured to receive a dedicated physical control channel sent by the user equipment to the macro base station, and the feedback information bit report of the dedicated physical control channel The interference caused by the user equipment to the micro base station.

34. The macro base station according to claim 32, wherein the receiver is specifically configured to receive an enhanced uplink dedicated channel sent by the user equipment to the macro base station, and the control bits of the enhanced uplink dedicated channel are complex The level of energy information of the auxiliary pilot channel detected by the user equipment;

35. A computer storage medium. The computer storage medium can store a program. When the program is executed, it can include part or all of the steps of the method according to any one of claims 1-4.

36. A computer storage medium. The computer storage medium can store a program. When the program is executed, it can include part or all of the steps of the method according to any one of claims 5-8.

37. A computer storage medium. The computer storage medium can store a program. When the program is executed, it can include part or all of the steps of the method according to any one of claims 9-11.