WO2013189345A2

WO2013189345A2 - Method and apparatus for controlling interference between macro base station and low power node

Info

Publication number: WO2013189345A2
Application number: PCT/CN2013/081648
Authority: WO
Inventors: 詹建明; 王琛; 刘俊强
Original assignee: 中兴通讯股份有限公司
Priority date: 2013-04-03
Filing date: 2013-08-16
Publication date: 2013-12-27
Also published as: CN104105184B; CN104105184A; WO2013189345A3

Abstract

A method and an apparatus for controlling interference between a macro base station and a low power node, comprising: determining users in an unbalanced area in a macro cell; sending, to the low power node, user identifiers of the users in the unbalanced area; receiving a load alarm message sent by the low power node, the load alarm message carrying the user identifiers of the users, requiring to be regulated and controlled, in the unbalanced area; and sending, to the macro base station, a down-adjusting uplink authorization message, the down-adjusting uplink authorization message carrying the user identifiers of the users, requiring to be regulated and controlled, in the unbalanced area, so as to enable the macro base station to lower uplink power for the users. The embodiments of the present invention can effectively control the interference, of the users in the unbalanced area against users in a low power cell, between the macro base station and the low power node.

Description

Interference control method and device between macro base station and low power node

Technical field

The present invention relates to the field of communications, and in particular, to an interference control method and apparatus between a macro base station and a low power node. Background technique

With the rapid development of mobile broadband services, data services of various 3GPP standard smart terminals (mobile phones, data cards, iPads, etc.) have been applied in a blowout application. This application situation directly leads to an explosive growth in data traffic in hotspots. It is difficult to fully meet the data growth demand only by enhancing the performance of the traditional macro cell, and it is necessary to provide a new network solution on the original traditional macro station network foundation. The mobile communications industry has reached a high level of consensus to address the rapidly growing data traffic demands by deploying the same-frequency Low Power Node (LPN) in the macro cell, as shown in Figure 1. LPN includes Micro, Pico, Metro base stations, and the like. However, since the dimensional base station may be applied to hotspots or hotspot coverage, the following various interference problems occur.

Since the output power of the macro base station and the LPN are very different, and the uplink receiving power is not much different, the uplink coverage boundary and the downlink coverage boundary between the macro base station and the LPN are greatly different, that is, there is a so-called large uplink and downlink imbalance area. , as shown in picture 2. When the user's uplink load demand in the LPN downlink coverage area is high, it will be subject to uplink interference from users in the unbalanced area. The LPN cannot control users in the unbalanced area, causing users in the LPN downlink coverage area to be seriously interfered by users in the unbalanced area and affecting service performance.

As shown in FIG. 3, in the downlink handover area between the macro base station and the LPN, the user is a high-speed downlink packet access (HSDPA) user of the macro cell, and the uplink power control is controlled by the LPN. The HS-DPCCH (High Speed Dedicated Physical Control CHannel) uplink feedback channel power is low, the channel quality CQI is deteriorated, HARQ (Hybrid Automatic Repeat reQuest) ACK/NACK Answer decoding error and HS-PDSCH (High Speed Downlink Shared Channel, high-speed downlink shared channel) The number of retransmissions increases, resulting in poor downlink performance of HSDPA for these users.

The uplink power of the downlink coverage area of the LPN may cause interference to the uplink of the macro cell. In particular, the deployment of more LPNs in the macro cell may cause the LPN user to interfere with the macro cell uplink or even block the user of the macro cell. In. Summary of the invention

Embodiments of the present invention provide a method and an apparatus for controlling interference between a macro base station and a low power node, a low power node, and a macro base station, to solve various types of interference problems between a macro base station and a low power node appearing in the related art.

An embodiment of the present invention provides a method for controlling interference between a macro base station and a low power node, including: determining a user in a non-equilibrium zone in a macro cell; and transmitting, to a low power node, a user identity of the user in the unbalanced zone; receiving The load alarm message sent by the low-power node, the load alarm message carrying the user identifier of the user in the unbalanced area to be adjusted; sending the uplink grant message to the macro base station, and down-regulating the uplink grant message carrying the unbalanced area to be regulated The user identifier of the user, so that the macro base station lowers the uplink power for the user.

The step of determining the user in the non-equilibrium zone in the macro cell includes: receiving the uplink power of the macro cell user measured by the macro base station sent by the macro base station; and transmitting the uplink scrambling code and the slot format of the macro cell user to the low power node Receiving the uplink power of the macro cell user measured by the low power node sent by the low power node; for a certain user, when the difference between the uplink power measured by the low power node and the uplink power measured by the macro base station is greater than zero, Make sure the user is in a non-balanced area.

The load alarm message and the down-regulated uplink grant message further carry load-to-occurrence ordering information, so that the macro base station lowers the uplink power for the user in the unbalanced area according to the load ratio sorting information. The load ratio ranking information includes R99 service classification information. The uplink power control is performed on the user R99 service in the unbalanced area according to the load ratio order.

The method further includes: receiving a load alarm cancellation message or a load normal message sent by the low power node; and sending a normal uplink authorization message to the macro base station. The method further includes: when the user performs soft handover and the HS-DSCH serving cell of the user is a macro cell, notifying the low power node that the downlink DPCCH does not send the downlink power control command; when the user performs soft handover and the user's HS-DSCH When the serving cell is a low-power cell, the low-power node is notified to send a downlink power control command to the downlink DPCCH.

The embodiment of the invention further provides an interference control method between a macro base station and a low power node, which is applied to the low power node LPN, and includes:

Receiving, by the radio network controller, the RNC, the user identifier of the user in the unbalanced area; comparing the calculated uplink load with the set load uplink threshold, where the uplink load includes the unbalanced area between the macro base station and the LPN The uplink power of the user and the uplink power of the user of the LPN downlink coverage area;

If the uplink load is higher than the load uplink threshold, send a load alarm message to the RNC, where the load alarm message carries a user identifier of the user in the unbalanced area to be adjusted, so that the macro base station lowers the user for the user. Uplink power.

The load alarm message further carries load ratio ordering information.

The load ratio ranking information includes: R99 service classification information.

The embodiment of the invention further provides an interference control method between a macro base station and a low power node, which is applied to the macro base station, and includes:

The macro base station receives the down-regulated uplink grant message sent by the radio network controller RNC, where the down-going uplink grant message carries the user identifier of the user in the unbalanced area to be regulated;

The macro base station lowers uplink power for the user according to the user identifier of the user in the unbalanced area.

The downlink uplink grant message further carries the load ratio ordering information, and the macro base station lowers the uplink power for the user according to the load ratio sorting information. The embodiment of the present invention further provides an interference control apparatus between a macro base station and a low power node, including: a user determining unit, configured to determine a user in a non-equilibrium zone in the macro cell; and to send a downward uplink grant message to the macro base station, Upgrading the uplink authorization message to carry the user identifier of the user in the unbalanced area to be adjusted, so that the macro base station lowers the uplink power for the user; The receiving unit is configured to receive a load alarm message sent by the low power node, where the load alarm message carries the user identifier of the user in the unbalanced area to be regulated.

The user determination unit includes:

a calculation module, configured to calculate a difference between the uplink power of the macro cell user measured by the low power node and the uplink power of the macro cell user measured by the macro base station;

The comparison module is configured to: when the difference is greater than zero, determine that the user is in the unbalanced area; the receiving unit is further configured to receive the uplink power of the macro cell user measured by the low power node sent by the low power node And an uplink power of the macro cell user measured by the macro base station and sent by the macro base station;

The sending unit is further configured to send, to the low power node, an uplink scrambling code and a slot format of the macro cell user required for the low power node to measure the uplink power of the macro cell user.

The load alarm message and the down-regulated uplink grant message further carry load-to-occurrence ordering information, so that the macro base station lowers the uplink power for the user according to the load ratio sorting information.

The apparatus may further include a control unit configured to perform uplink power control on the R99 service according to the load ratio order, wherein the load ratio ranking information includes R99 service classification information.

The receiving unit is further configured to receive a load alarm cancellation message or a load normal message sent by the low power node;

The sending unit is further configured to send a normal uplink grant message to the macro base station.

The device may further include a notification unit, configured to notify the low power node that the downlink DPCCH does not send the downlink power control command when the user performs a soft handover (Soft Handover) and the user's HS-DSCH serving cell is a macro cell; When a soft handoff occurs and the HS-DSCH serving cell of the user is a low power cell, the low power node is notified to send a downlink power control command to the downlink DPCCH.

The embodiment of the invention further provides a low power node for controlling interference between the macro base station and the low power node, including:

a receiving unit, configured to receive a user identifier of a user in a non-equilibrium zone sent by the radio network controller RNC; The determining unit is configured to compare the calculated uplink load with the set uplink uplink threshold, where the uplink load includes uplink power of the user in the unbalanced area between the macro base station and the LPN, and uplink of the user of the LPN downlink coverage area power;

a sending unit, configured to send a load alarm message to the RNC if the uplink load is higher than the load uplink threshold, where the load alarm message carries a user identifier of a user in an unbalanced area to be adjusted, for providing The macro base station lowers the uplink power for the user.

The load alarm message further carries load ratio ordering information.

The embodiment of the present invention further provides a macro base station, configured to control interference between a macro base station and a low power node, including:

a receiving unit, configured to receive a down-regulated uplink grant message sent by the radio network controller RNC, where the down-regulated uplink grant message carries the user identifier of the user in the unbalanced area to be regulated;

The control unit is configured to downgrade the uplink power for the user according to the user identifier of the user in the unbalanced area.

The down-going uplink grant message further carries load-sorting ordering information, and the macro base station lowers uplink power for the user according to the load-satisfying ordering information.

The embodiments of the present invention can effectively control the interference of users in the unbalanced area between the macro base station and the low power node to the low power cell user and the HSDPA of the macro cell user are interfered by the power of the low power node.

BRIEF abstract

The following is a detailed description and introduction by referring to the accompanying drawings, wherein the drawings include:

1 is a network diagram of deployment of a macro base station and a low power base station;

2 is a schematic diagram of a boundary between an uplink boundary and a downlink boundary of a macro base station and a low power node;

3 is a network diagram of a department in which a low power node is deployed in a central portion of a macro base station handover area; 4A is a flowchart of a method for controlling interference between a macro base station and a low power node according to Embodiment 1 of the present invention;

4B is a flow chart showing the interaction between the macro base station and the low power node interference control method in the system for controlling the interference of the user in the unbalanced area to the low power cell user in the system according to the first embodiment of the present invention; FIG. 5A is an embodiment of the present invention; An interference control method between a macro base station and a low power node is applied to an execution diagram of a user's HS-DSCH serving cell in a macro cell scenario;

5B is a command time slot diagram of an LPN of a user in which an HS-DSCH serving cell is a macro cell application;

5C is a protocol structure diagram of a radio link establishment process of a user's HS-DSCH serving cell in a macro cell application;

5D is a schematic diagram of an implementation of an interference control method between a macro base station and a low power node according to Embodiment 1 of the present invention, where the HS-DSCH serving cell of the user is a low power cell scenario;

5E is a command time slot diagram of the LPN of the user in which the HS-DSCH serving cell is a low power cell application;

5F is a protocol structure diagram of a radio link establishment process of a user's HS-DSCH serving cell in a low-power cell application;

6 is a schematic structural diagram of an interference control apparatus between a macro base station and a low power node according to Embodiment 2 of the present invention;

7 is a schematic structural diagram of a low power node according to Embodiment 2 of the present invention;

FIG. 8 is a schematic structural diagram of a macro base station according to Embodiment 2 of the present invention. Preferred embodiment of the invention

The preferred embodiments of the present invention are described in conjunction with the accompanying drawings, and the preferred embodiments of the present invention are only intended to illustrate and explain the present invention. The non-equilibrium zone is a non-equilibrium zone between the macro cell and the low power node. The macro cell is the area covered by the macro base station. A low power cell is an area covered by a low power node.

Embodiment 1 The embodiment provides an interference control method between a macro base station and a low power node, and the method is applied to a radio network controller (RNC). As shown in Figures 4A and 4B, the method includes:

Step S410: The RNC determines a user in the macro cell that is in the unbalanced area;

In this step, the RNC receives the uplink power of the macro cell user measured by the macro base station and transmits the uplink scrambling code and the slot format of the macro cell user to the LPN, and receives the macro cell user measured by the LPN transmitted by the LPN. Upstream power. The uplink power may be a received signal code power (RSCP, Received Signal Code Power) of a pilot (Pilot Pilot) of a user's uplink dedicated physical control channel (DPCCH). For a certain user, when the difference between the uplink power measured by the LPN and the uplink power measured by the macro base station is greater than zero, it is determined that the user is in the non-equilibrium zone.

Step S420: Send a user identifier of the macro cell user to the low power node.

Step S430: Receive a load alarm message sent by the low-power node, where the load alarm message carries the user identifier of the user in the unbalanced area to be regulated;

In this step, the LPN uplink load includes the uplink power of the UE in the unbalanced area between the macro base station and the LPN and the uplink power of the LPN downlink coverage area UE. The LPN performs search and demodulation according to the uplink scrambling code and slot format used by the UE in the unbalanced area to calculate the uplink power of the UE in the unbalanced area, and also calculates the uplink power from the LPN downlink coverage area UE. The LPN then compares the calculated uplink load with the set load upstream threshold. If the uplink load is higher than the load uplink threshold, the LPN can calculate multiple UEs with a higher load ratio (which may use the HSUPA service or the R99 uplink data service) and send a load alarm message to the RNC. The information carries a plurality of UE identifiers in the non-equilibrium area with a relatively large proportion, and includes the proportion sorting information.

The load alarm message and the down-regulated uplink grant message further carry load-to-occurrence ordering information, so that the macro base station lowers the uplink power for the user according to the load ratio sorting information. The load ratio ranking information includes R99 service classification information; and the uplink power control of the user R99 service is performed according to the load occupancy ratio. Step S440: The RNC sends a downward adjustment of the uplink grant message to the macro base station, and the uplink grant message carries the user identifier of the user in the unbalanced area to be adjusted, so that the macro base station lowers the uplink power for the user.

The load alarm message and the down-regulated uplink grant message further carry load-sorting ordering information, so that the macro base station lowers the uplink power for the user according to the load-to-load ratio sorting information. The macro base station performs uplink power control according to the UE identifier in the unbalanced area sent by the RNC, and the macro base station preferentially processes the UE with a lower scheduling priority, and preferentially processes the UE with a heavier load ratio when the scheduling priority is the same. Control these UEs to reduce the transmit power.

When the load ratio sorting information includes the R99 service classification information, the RNC performs uplink power control on the unbalanced area UE R99 service according to the load alarm information sent by the low power base station, and the RNC preferentially processes the UE with a heavier load ratio, and the high speed The R99 uplink PS service is adjusted to the low-speed uplink PS service, for example, the uplink PS 144 kbps is adjusted to the uplink PS 32 kbp or PS 16 kbps low-speed uplink service.

In addition, when the RNC receives the load alarm cancellation message or the load normal message sent by the LPN, it sends a normal uplink grant message to the macro base station.

As shown in FIG. 5A and FIG. 5B, when the user performs a soft handover (Soft Handover) and the serving cell of the HS-DSCH (High-Speed DownShare Shared Channel) of the user is a macro cell, the RNC notifies the LPN of the downlink DPCCH. The downlink power control command is not sent. For example, but not limited to, the extension field in the RADIO LINK SETUP REQUEST message between the RNC and the LPN increases the downlink DPCCH TPC operating mode indication and is set to the "TPC OFF MODE" state. Referring specifically to FIG. 5C, the FDD TPC DL Mode is added to the DL DPCH Information of the RADIO LINK SETUP REQUEST, and the FDD TPC DL Mode = TPC OFF MODE is set.

As shown in FIG. 5D and FIG. 5E, when the user performs a soft handover (Soft Handover) and the serving cell of the HS-DSCH of the user is a low-power cell, the RNC notifies the LPN downlink DPCCH to send a downlink power control command. For example, but not limited to, the extended field in the RADIO LINK RECONFIGURATION PREPARE between the RNC and the LPN increases the downlink DPCCH TPC operating mode indication and is set to the "TPC ON MODE" state. Refer specifically to Figure 5F, in RADIO LINK SETUP REQUEST DL DPCH Information adds FDD TPC DL Mode and sets FDD TPC DL Mode = TPC ON MODE.

This embodiment can effectively control the interference of the user in the unbalanced area between the macro base station and the low power node to the low power cell user and the HSDPA of the macro cell user by the power control interference of the low power node.

Embodiment 2

The embodiment provides an interference control device between a macro base station and a low power node, such as an RNC. As shown in Figure 6, the device includes:

The user determining unit 610 is configured to determine a user in the macro cell that is in the unbalanced area. The sending unit 620 is configured to send the user identifier of the macro cell user to the low power node, and send the down uplink grant message to the macro base station, and downgrade the uplink grant message. Carrying the user identifier of the user in the unbalanced area to be adjusted, so that the macro base station lowers the uplink power for the user;

The receiving unit 630 is configured to receive a load alarm message sent by the low power node, where the load alarm message carries the user identifier of the user in the unbalanced area to be regulated.

The user determining unit 610 includes: a calculating module, configured to calculate a difference between an uplink power of the macro cell user measured by the low power node and an uplink power of the macro cell user measured by the macro base station; and a comparison module, where the difference is greater than At zero hour, the user is determined to be in a non-equilibrium zone. The uplink power may be a received signal code power (RSCP, Received Signal Code Power) of a pilot (Pilot Pilot) of a user's uplink dedicated physical control channel (DPCCH). The uplink power of the macro cell user measured by the low power node and the uplink power of the macro cell user measured by the macro base station are respectively received from the LPN and the macro base station and received by the receiving unit 630, and the macro power station measures the uplink power of the macro cell user; The uplink scrambling code and the slot format of the macro cell user required for the low power node to measure the uplink power of the macro cell user are sent to the low power node and sent by the sending unit 620.

The LPN uplink load includes the uplink power of the UE in the unbalanced area between the macro base station and the LPN and the uplink power of the LPN downlink coverage area UE. The LPN performs search and demodulation according to the uplink scrambling code and slot format used by the unbalanced area UE to calculate the uplink power of the UE in the unbalanced area, and also calculates the uplink power from the LPN downlink coverage area UE. The LPN then compares the calculated uplink load with the set load upstream threshold. If the uplink load is higher than the load uplink threshold, LPN It is possible to calculate a plurality of UEs with a relatively high proportion of load (which may be using HSUPA services or R99 uplink data services). The LPN sends a load alarm message to the RNC, and the load alarm information carries a plurality of UE identifiers in the non-equilibrium area with a relatively large proportion, and includes the proportion sorting information.

The load alarm message and the down-regulated uplink grant message also carry load ratio sorting information, so that the macro base station lowers the uplink power for the user according to the load ratio sorting information.

The macro base station performs uplink power control according to the UE identifier in the unbalanced area sent by the RNC, and the macro base station preferentially processes the UE with a lower scheduling priority, and preferentially processes the UE with a heavier load ratio when the scheduling priority is the same. Control these UEs to reduce the transmit power.

The apparatus may further include a control unit 640 configured to perform uplink power control on the R99 service of the user according to a load ratio, the load ratio ranking information includes R99 service classification information, or the R99 service for the macro cell and the low power node. Perform uplink power control. Specifically, the uplink power control is performed on the UE R99 service in the unbalanced area according to the load alarm information sent by the low-power base station, and the RNC preferentially processes the UE with a heavy load ratio, and adjusts the high-speed R99 uplink PS service to the low-speed uplink PS service. For example, the uplink PS144kbps is originally adjusted to the uplink PS32kbp or PS16kbps low-speed uplink service.

When the receiving unit 630 receives the load alarm cancellation message or the load normal message sent by the low power node, the sending unit sends a normal uplink grant message to the macro base station.

The device can also include a notification unit 650. When the user performs a soft handover (Soft Handover) and the serving cell of the HS-DSCH of the user is a macro cell, the notification unit 650 is configured to notify the low power node that the downlink DPCCH does not send a downlink power control command, for example, but not limited to, at the RNC and The extension field in the RADIO LINK SETUP REQUEST message between the LPNs increases the downlink DPCCH TPC operating mode indication and is set to the "TPC OFF MODE" state. Referring specifically to FIG. 5C, the FDD TPC DL Mode is added to the DL DPCH Information of the RADIO LINK SETUP REQUEST, and the FDD TPC DL Mode = TPC OFF MODE is set. When the user performs a soft handover (Soft Handover) and the serving cell of the HS-DSCH of the user is a low power cell, the notification unit 650 notifies the low power node that the downlink DPCCH transmits the downlink power control command. For example, but not limited to, the extended field in the RADIO LINK RECONFIGURATION PREPARE between the RNC and the LPN increases the downlink DPCCH TPC As the mode indication, set to the "TPC ON MODE" state. Referring specifically to FIG. 5F, the FDD TPC DL Mode is added to the DL DPCH Information of the RADIO LINK SETUP REQUEST, and the FDD TPC DL Mode = TPC ON MODE is set.

This embodiment provides a low-power node for controlling interference between a macro base station and a low-power node. As shown in FIG. 7, the low-power node includes:

The receiving unit 710 is configured to receive a user identifier of the user in the unbalanced area sent by the radio network controller RNC;

The determining unit 720 is configured to compare the calculated uplink load with the set uplink uplink threshold, where the uplink load includes uplink power of the unbalanced area user between the macro base station and the LPN and uplink power of the LPN downlink coverage area user. ;

The sending unit 730 is configured to send a load alarm message to the RNC if the uplink load is higher than the load uplink threshold, where the load alarm message carries the user identifier of the user in the unbalanced area to be regulated, The macro base station lowers the uplink power for the user.

The load alarm message further carries load ratio ordering information.

The embodiment provides a macro base station for controlling interference between a macro base station and a low power node. As shown in FIG. 8, the macro base station includes:

The receiving unit 810 is configured to receive the downlink grant authorization message sent by the radio network controller RNC, where the down-regulated uplink grant message carries the user identifier of the user in the unbalanced area to be regulated;

The adjusting unit 820 is configured to downgrade the uplink power for the user according to the user identifier of the user in the unbalanced area.

The down-going uplink grant message further carries load-sorting ordering information, and the macro-base station lowers the uplink power for the user according to the load-satisfying ordering information. The embodiments of the present invention can effectively control the interference of users in the unbalanced area between the macro base station and the low power node to the low power cell user and the HSDPA of the macro cell user are interfered by the power of the low power node.

The above description is only a preferred embodiment of the present invention, and it should be noted that Many modifications and refinements can be made by those skilled in the art without departing from the principles of the invention. These modifications and modifications are also considered to be within the scope of the invention.

Industrial Applicability The embodiments of the present invention can effectively control the interference of users in the unbalanced area between the macro base station and the low power node to the low power cell user and the HSDPA of the macro cell user by the power interference of the low power node.

Claims

claims

1. An interference control method between macro base stations and low-power nodes, including:

Determine the users in the unbalanced area in the macro cell; Receive the load alarm message sent by the low-power node, where the load alarm message carries the user identification of the user in the unbalanced area to be controlled;

Send a downward adjustment uplink authorization message to the macro base station. The downward adjustment uplink authorization message carries the user identification of the user in the unbalanced area to be controlled, so that the macro base station can lower the uplink power for the user.

2. The interference control method between macro base stations and low-power nodes according to claim 1, wherein the step of determining users in the unbalanced area in the macro cell includes:

Receive the uplink power of the macro cell user measured by the macro base station and sent by the macro base station;

Send the uplink scrambling code and time slot format of the macro cell user to the low power node;

Receive the uplink power of the macro cell user measured by the low power node and sent by the low power node;

When the difference between the uplink power of a macro cell user measured by the low-power node and the uplink power of the macro cell user measured by the macro base station is greater than zero, it is determined that the macro cell user is in an unbalanced area. .

3. The interference control method between a macro base station and a low-power node according to claim 1, wherein: the load alarm message and the downlink uplink authorization message also carry load proportion ranking information.

4. The interference control method between macro base stations and low-power nodes according to claim 3, wherein: the load proportion ranking information includes: R99 service classification information;

The method further includes: performing uplink power control on the R99 services of the users in the unbalanced area according to the load proportion sorting.

5. The interference control method between macro base stations and low-power nodes according to claim 1, further comprising:

Receive a load alarm elimination message or a load normal message sent by the low-power node;

Send a normal uplink authorization message to the macro base station.

6. The interference control method between macro base stations and low-power nodes according to claim 1, further comprising: When a soft handover occurs to the user and the user's high-speed downlink shared channel HS-DSCH serving cell is a macro cell, notify the low-power node not to send downlink power control commands on the downlink dedicated physical control channel DPCCH;

When a soft handover occurs to a user and the user's HS-DSCH serving cell is a low-power cell, the low-power node is notified to send a downlink power control command on the downlink DPCCH.

7. An interference control method between macro base stations and low-power nodes, applied to low-power node LPN, including:

Receive the user identification of the user in the unbalanced area sent by the radio network controller RNC; compare the calculated uplink load with the set load uplink threshold, where the uplink load includes the unbalanced area from the macro base station and the LPN The uplink power of users and the uplink power of users in the LPN downlink coverage area;

If the uplink load is higher than the load uplink threshold, a load alarm message is sent to the RNC. The load alarm message carries the user identification of the user in the unbalanced area to be controlled, so that the macro base station can target the user Reduce the uplink power.

8. The interference control method between a macro base station and a low-power node according to claim 7, wherein the load alarm message also carries load proportion ranking information.

9. The interference control method between macro base stations and low-power nodes according to claim 8, wherein: the load proportion ranking information includes: R99 service classification information.

10. An interference control method between a macro base station and a low-power node, applied to a macro base station, including: the macro base station receives a downward adjustment uplink authorization message sent by the radio network controller RNC, and the downward adjustment uplink authorization message carries the to-be-regulated The user ID of the user in the unbalanced zone;

The macro base station lowers the uplink power for the user based on the user identification of the user in the unbalanced area.

11. The interference control method between macro base stations and low-power nodes according to claim 10, wherein,

The downward adjustment uplink authorization message also carries load proportion sorting information, and the macro base station lowers the uplink power for the user based on the load proportion sorting information.

12. An interference control device between a macro base station and a low-power node, including:

The user determination unit is configured to determine users in the unbalanced area in the macro cell; Identification; Send a downward adjustment uplink authorization message to the macro base station. The downward adjustment uplink authorization message carries the user identification of the user in the unbalanced area to be controlled, so that the macro base station can lower the uplink power for the user; The receiving unit is configured to receive all The load alarm message sent by the low-power node, the load alarm message carries the user identification of the user in the unbalanced area to be controlled.

13. The interference control device between a macro base station and a low-power node according to claim 12, wherein the user determination unit includes:

The calculation module is configured to calculate the difference between the uplink power of the macro cell user measured by the low-power node and the uplink power of the macro cell user measured by the macro base station;

The comparison module is configured to determine that the user is in an unbalanced area when the difference is greater than zero; the receiving unit is also configured to receive the macro cell measured by the low power node sent by the low power node The uplink power of the user and the uplink power of the macro cell user measured by the macro base station and sent by the macro base station are respectively sent from the low power node and the macro base station and received by the receiving unit;

The sending unit is further configured to send the uplink scrambling code and time slot format of the macro cell user required by the low power node to measure the uplink power of the macro cell user to the low power node.

14. The interference control device between the macro base station and the low-power node according to claim 12, wherein:

The load alarm message and the downlink uplink authorization message also carry load proportion ranking information.

15. The interference control device between the macro base station and the low-power node according to claim 14, further comprising:

The control unit is configured to perform uplink power control on the user's R99 service according to load proportion sorting, where the load proportion sorting information includes R99 service classification information.

16. The interference control device between the macro base station and the low-power node according to claim 12, wherein:

The receiving unit is also configured to receive a load alarm elimination message or a load normal message sent by the low-power node;

The sending unit is also configured to send a normal uplink authorization message to the macro base station.

17. The interference control device between the macro base station and the low-power node according to claim 12, further comprising: Notification unit, set to when a soft handover occurs to the user and the user's high-speed downlink shared channel

When the HS-DSCH serving cell is a macro cell, notify the low-power node that the downlink dedicated physical control channel DPCCH does not send downlink power control commands; when a soft handover occurs to the user and the user's HS-DSCH serving cell is a low-power cell, Notify the low-power node to send a downlink power control command on the downlink DPCCH.

18. A low-power node LPN, used to control interference between macro base stations and low-power nodes, including: a receiving unit, configured to receive the user identification of the user in the unbalanced area sent by the radio network controller RNC;

The decision unit is configured to compare the calculated uplink load with the set load uplink threshold. The uplink load includes the uplink power of users in the unbalanced area between the macro base station and the LPN and the uplink power of the users in the LPN downlink coverage area. ;

The sending unit is configured to send a load alarm message to the RNC if the uplink load is higher than the load uplink threshold. The load alarm message carries the user identification of the user in the unbalanced area to be controlled for Acer. The station reduces the uplink power for this user.

19. The low power node according to claim 18, wherein,

The load alarm message also carries load proportion sorting information.

20. The low power node according to claim 19, wherein,

The load proportion sorting information includes: R99 service classification information.

21. A macro base station, used to control interference between macro base stations and low-power nodes, including: a receiving unit, configured to receive a down-regulation uplink authorization message sent by the radio network controller RNC, and the down-regulation uplink authorization message carries the content to be regulated The user identification of the user in the unbalanced area; the control unit is configured to lower the uplink power for the user according to the user identification of the user in the unbalanced area.

22. The macro base station according to claim 21, wherein,

The down-adjust uplink authorization message also carries load proportion sorting information, and the macro base station lowers the uplink power for the user based on the load proportion sorting information.