WO2014012222A1 - 一种上行干扰管理方法、节点及系统 - Google Patents

一种上行干扰管理方法、节点及系统 Download PDF

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Publication number
WO2014012222A1
WO2014012222A1 PCT/CN2012/078771 CN2012078771W WO2014012222A1 WO 2014012222 A1 WO2014012222 A1 WO 2014012222A1 CN 2012078771 W CN2012078771 W CN 2012078771W WO 2014012222 A1 WO2014012222 A1 WO 2014012222A1
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WO
WIPO (PCT)
Prior art keywords
uplink
cell node
interference cancellation
interference
micro cell
Prior art date
Application number
PCT/CN2012/078771
Other languages
English (en)
French (fr)
Inventor
陈东
徐小英
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201280016594.4A priority Critical patent/CN103797835A/zh
Priority to CA2879368A priority patent/CA2879368A1/en
Priority to EP12881313.6A priority patent/EP2866489A4/en
Priority to PCT/CN2012/078771 priority patent/WO2014012222A1/zh
Publication of WO2014012222A1 publication Critical patent/WO2014012222A1/zh
Priority to US14/599,292 priority patent/US9515807B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058Allocation criteria
    • H04L5/0073Allocation arrangements that take into account other cell interferences
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J11/00Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023Interference mitigation or co-ordination
    • H04J11/0026Interference mitigation or co-ordination of multi-user interference
    • H04J11/0036Interference mitigation or co-ordination of multi-user interference at the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J11/00Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023Interference mitigation or co-ordination
    • H04J11/005Interference mitigation or co-ordination of intercell interference
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/21Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/27Control channels or signalling for resource management between access points
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J2211/00Orthogonal indexing scheme relating to orthogonal multiplex systems
    • H04J2211/001Orthogonal indexing scheme relating to orthogonal multiplex systems using small cells within macro cells, e.g. femto, pico or microcells
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04Large scale networks; Deep hierarchical networks
    • H04W84/042Public Land Mobile systems, e.g. cellular systems
    • H04W84/045Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B

Definitions

  • the present application relates to the field of wireless communications, and in particular, to an uplink interference management method, node, and system. Background technique
  • Hetneteous Network Hetnet
  • Hetnet is composed of multiple cells of different sizes and types, including: macro cell
  • the cell includes: a cell (Micro cell), a cell (Pico Cell), a Femto Cell, and a remote radio head (RRH).
  • a cell Mocro cell
  • Pico Cell a cell
  • Femto Cell a cell
  • RRH remote radio head
  • the user equipment In this network deployment mode, the user equipment (UE) establishes a normal uplink signal transmission after establishing a connection with the macro cell.
  • UE user equipment
  • the UE accessing the macro cell enters the uplink coverage area of the micro cell but has not established a connection with the micro cell, since the UE is in the micro cell In the uplink coverage area, the micro cell receives the uplink signal transmitted by the macro cell UE, so the uplink signal of the macro cell UE may cause severe uplink interference to the micro cell, thereby affecting the reception and demodulation of the uplink signal of the micro cell UE. , resulting in a decrease in the uplink capacity of the micro cell. Summary of the invention
  • the embodiments of the present application provide an uplink interference management method, a node, and a system, which can reduce interference caused by a macro cell UE to a micro cell, thereby improving uplink capacity of the micro cell.
  • a first aspect of the present application provides an uplink interference management method, including:
  • the micro cell node receives the interference cancellation request sent by the macro cell node, where the interference cancellation request includes uplink configuration information of the user equipment UE, uplink scrambling code information of the UE, and location information used to determine the UE uplink dedicated physical control channel DPCCH;
  • Interference cancellation is performed according to the interference cancellation request.
  • the performing interference cancellation according to the interference cancellation request includes:
  • the uplink signal of the UE corresponding to the interference cancellation request is cancelled in the received uplink signal.
  • the UE is a UE that is determined by the macro cell node to cause uplink interference to a micro cell.
  • the uplink configuration information includes at least one of the following: slot format information of an uplink DPCCH, and configuration of an enhanced dedicated physical control channel E-DPCCH Information, discontinuously sending configuration information;
  • the location information used to determine the uplink DPCCH of the UE includes at least one of the following: a timing difference between the uplink DPCCH of the UE and the common pilot channel of the micro cell, and a timing difference between the downlink DPCCH of the UE and the common pilot channel of the micro cell.
  • the method before receiving the interference cancellation request sent by the macro cell node, the method further includes:
  • the macro cell node sends an interference management request and/or a periodic interference management request to the macro cell node, where the macro cell node triggers sending the interference cancellation under any of the following conditions:
  • the macro cell node receives an interference management request sent by the micro cell node; the macro cell node receives a periodic interference management request sent by the micro cell node; and the macro cell node determines that the UE is small The area caused uplink interference.
  • the method further includes: when the uplink interference level is higher than a predefined one, in combination with the first aspect and the foregoing possible implementation manner At the threshold, the uplink signal of the UE is cancelled in the received uplink signal.
  • the method after receiving the interference cancellation request sent by the macro cell node, the method further includes:
  • the method before receiving the interference cancellation request sent by the macro cell node, the method further includes:
  • the capability information supporting interference cancellation is transmitted to the macro cell node.
  • a second aspect of the present application provides an uplink interference management method, including:
  • the macro cell node sends an interference cancellation request to the micro cell node, so that the micro cell node performs interference cancellation according to the interference cancellation request;
  • the interference cancellation request includes uplink configuration information of the user equipment UE, uplink scrambling code information of the UE, and location information used to determine the uplink dedicated physical control channel DPCCH of the UE.
  • the sending, to the micro cell node, the interference cancellation request includes:
  • the interference cancellation request includes uplink configuration information of the UE that causes uplink interference to the micro cell, and uplink scrambling code of the UE that causes uplink interference to the micro cell.
  • the uplink configuration information includes at least one of the following: slot format information of an uplink DPCCH, and configuration of an enhanced dedicated physical control channel E-DPCCH Information, discontinuously sending configuration information;
  • the location information used to determine the uplink DPCCH of the UE includes at least one of the following: a timing difference between the uplink DPCCH of the UE and the common pilot channel of the micro cell, and a timing difference between the downlink DPCCH of the UE and the common pilot channel of the micro cell.
  • the sending of the interference cancellation request is triggered in any of the following cases:
  • the UE causes uplink interference to the micro cell.
  • the method further includes:
  • An operation of further reducing interference is performed according to the interference cancellation response.
  • the method before sending the interference cancellation request to the micro cell node, the method further includes:
  • the performing the interference cancellation request to the micro cell node is performed.
  • a third aspect of the present application provides a micro cell node, including:
  • a receiving unit configured to receive an interference cancellation request sent by a macro cell node, where the interference cancellation request includes uplink configuration information of the user equipment UE, uplink scrambling code information of the UE, and a location for determining a UE dedicated uplink physical control channel DPCCH Information
  • an elimination unit configured to perform interference cancellation according to the interference cancellation request.
  • the eliminating unit includes: a detecting module, configured to use, according to the uplink configuration information included in the interference cancellation request, the UE The uplink scrambling code information and the location information used to determine the uplink DPCCH of the UE, and detecting an uplink signal of the UE corresponding to the interference cancellation request;
  • an elimination module configured to cancel, in the received uplink signal, an uplink signal of the UE corresponding to the interference cancellation request.
  • the UE is a UE that is determined by the macro cell node to cause uplink interference to the micro cell.
  • the uplink configuration information includes at least one of the following: slot format information of an uplink DPCCH, and configuration of an enhanced dedicated physical control channel E-DPCCH Information, discontinuously sending configuration information;
  • the location information used to determine the uplink DPCCH of the UE includes at least one of the following: a timing difference between the uplink DPCCH of the UE and the common pilot channel of the micro cell, and a timing difference between the downlink DPCCH of the UE and the common pilot channel of the micro cell.
  • the micro cell node further includes:
  • a response unit configured to: after the receiving unit receives the interference cancellation request sent by the macro cell node, send an interference cancellation response to the macro cell node, so that the macro cell node performs further interference reduction according to the interference; Operation.
  • the micro cell node further includes:
  • a capability unit configured to send, to the macro cell node, capability information that supports interference cancellation, before the receiving unit receives the interference cancellation request sent by the macro cell node.
  • a fourth aspect of the present application provides a macro cell node, including:
  • a sending unit configured to send an interference cancellation request to the micro cell node, so that the micro cell node performs interference cancellation according to the interference cancellation request;
  • the interference cancellation request includes uplink configuration information of the user equipment UE, uplink scrambling code information of the UE, and location information for determining the uplink dedicated physical control channel DPCCH of the UE.
  • the sending unit includes: a determining module, configured to determine a UE that causes uplink interference to the micro cell;
  • a sending module configured to send an interference cancellation request to the micro cell node according to the determination result obtained by the determining module, where the interference cancellation request includes uplink configuration information of the UE that causes uplink interference to the micro cell, and the pair The uplink scrambling code information of the UE that causes the uplink interference and the location information of the uplink DPCCH of the UE used to determine the uplink interference to the micro cell.
  • the uplink configuration information includes at least one of the following: slot format information of an uplink DPCCH, and configuration of an enhanced dedicated physical control channel E-DPCCH Information, discontinuously sending configuration information;
  • the location information used to determine the uplink DPCCH of the UE includes at least one of the following: a timing difference between the uplink DPCCH of the UE and the common pilot channel of the micro cell, and a timing difference between the downlink DPCCH of the UE and the common pilot channel of the micro cell.
  • the macro cell node further includes: a scrambling cancellation request: receiving an interference management request sent by the micro cell node; or receiving The periodic interference management request sent by the micro cell node; or determining that the UE causes uplink interference to the micro cell.
  • the macro cell node further includes:
  • a receiving unit configured to: after the sending unit sends an interference cancellation request to the micro cell node, receive an interference cancellation response sent by the micro cell node;
  • a descrambling unit configured to perform an operation of further reducing interference according to the interference cancellation response received by the receiving unit.
  • the macro cell node further includes:
  • a capability unit configured to send, by the sending unit, an interference cancellation request to the micro cell node And receiving, by the micro cell node, capability information that supports interference cancellation;
  • the sending unit is further configured to: when the micro cell node supports interference cancellation, execute the sending an interference cancellation request to the micro cell node.
  • a fifth aspect of the present application provides an interference management system, including: a micro cell node and a macro cell node;
  • the micro cell node is configured to receive an interference cancellation request sent by a macro cell node, where the interference cancellation request includes uplink configuration information of the user equipment UE, uplink scrambling code information of the UE, and used to determine a UE uplink dedicated physical control channel. Position information of the DPCCH; performing interference cancellation according to the interference cancellation request;
  • the macro cell node is configured to send an interference cancellation request to the micro cell node, so that the micro cell node performs interference cancellation according to the interference cancellation request.
  • a sixth aspect of the present application provides a micro cell node, including:
  • a receiver configured to receive an interference cancellation request sent by a macro cell node, where the interference cancellation request includes uplink configuration information of the user equipment UE, uplink scrambling code information of the UE, and a location for determining a UE dedicated uplink physical control channel DPCCH Information
  • a processor configured to perform interference cancellation according to the interference cancellation request.
  • the processor is further configured to: according to the uplink configuration information included in the interference cancellation request, the uplink scrambling code information of the UE, and the location for determining the uplink DPCCH of the UE. And detecting an uplink signal of the UE corresponding to the interference cancellation request, and removing an uplink signal of the UE corresponding to the interference cancellation request in the received uplink signal.
  • the UE is a UE that is determined by the macro cell node to cause uplink interference to the micro cell.
  • the uplink configuration information includes at least one of the following: slot format information of an uplink DPCCH, and configuration of an enhanced dedicated physical control channel E-DPCCH Information, discontinuously sending configuration information;
  • the location information for determining the uplink DPCCH of the UE includes at least one of the following: The timing difference between the uplink DPCCH and the common pilot channel of the micro cell, and the timing difference between the downlink DPCCH of the UE and the common pilot channel of the micro cell.
  • the micro cell node further includes:
  • a transmitter configured to send an interference management request and/or a periodic interference management request to the macro cell node before the receiver receives the interference cancellation request sent by the macro cell node;
  • the macro cell node triggers sending the interference cancellation request under any one of the following conditions: the macro cell node receives an interference management request sent by the micro cell node; and the macro cell node receives the micro A periodic interference management request sent by the regional node; the macro cell node determines that the UE causes uplink interference to the micro cell.
  • the receiver is further configured to: after the processor detects an uplink signal of the UE corresponding to the interference cancellation request, when the uplink When the interference level is higher than the predefined threshold, the uplink signal of the UE is cancelled in the received uplink signal.
  • the transmitter is further configured to: after the receiver receives the interference cancellation request sent by the macro cell node, to the macro cell The node transmits an interference cancellation response such that the macro cell node performs an operation of further reducing interference according to the interference cancellation response.
  • the transmitter is further configured to: before the receiver receives an interference cancellation request sent by a macro cell node, to the macro cell.
  • the node sends capability information that supports interference cancellation.
  • a seventh aspect of the present application provides a macro cell node, including:
  • a transmitter configured to send an interference cancellation request to the micro cell node, so that the micro cell node performs interference cancellation according to the interference cancellation request;
  • the interference cancellation request includes uplink configuration information of the user equipment UE, uplink scrambling code information of the UE, and location information for determining the uplink dedicated physical control channel DPCCH of the UE.
  • the transmitter is further configured to: determine a UE that causes uplink interference to the micro cell; and send an interference cancellation request to the micro cell node according to the determination result;
  • the interference cancellation request includes uplink configuration information of the UE that causes uplink interference to the micro cell, uplink scrambling code information of the UE that causes uplink interference to the micro cell, and UE uplink that is used to determine the uplink interference caused by the micro cell. Location information of the DPCCH.
  • the uplink configuration information includes at least one of the following: slot format information of an uplink DPCCH, and configuration of an enhanced dedicated physical control channel E-DPCCH Information, discontinuously sending configuration information;
  • the location information used to determine the uplink DPCCH of the UE includes at least one of the following: a timing difference between the uplink DPCCH of the UE and the common pilot channel of the micro cell, and a timing difference between the downlink DPCCH of the UE and the common pilot channel of the micro cell.
  • requesting receiving an interference management request sent by the micro cell node; or receiving periodic interference management sent by the micro cell node Request; or determine that the UE causes uplink interference to the micro cell.
  • the macro cell node further includes:
  • a receiver configured to: after the transmitter sends an interference cancellation request to the micro cell node, receive an interference cancellation response sent by the micro cell node;
  • a processor configured to perform an operation of further reducing interference according to the interference cancellation response received by the receiver.
  • the receiver is further configured to: receive the micro cell node before the transmitter sends an interference cancellation request to the micro cell node. Transmitted capability information that supports interference cancellation;
  • the transmitter is further configured to: when the micro cell node supports interference cancellation, perform the sending an interference cancellation request to the micro cell node.
  • the micro cell node is After receiving the interference cancellation request sent by the macro cell node, canceling the uplink signal of the corresponding macro cell UE according to the information included in the interference cancellation request, when the macro cell UE enters the uplink coverage area of the micro cell, The uplink interference caused by the macro cell UE to the micro cell is eliminated, thereby increasing the uplink capacity of the micro cell.
  • FIG. 1 is a schematic diagram of a Hetnet scenario in the background art
  • FIG. 3 is a flowchart of an uplink interference management method according to another embodiment of the present application
  • FIG. 4 is a flowchart of an uplink interference management method according to another embodiment of the present application
  • FIG. 6 is a schematic structural diagram of a macro cell node in another embodiment of the present application.
  • FIG. 7 is a schematic diagram of a composition of a micro cell node in another embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a macro cell node in another embodiment of the present application. detailed description
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • WCDMA Wide Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency-Division Multiple Access
  • SC-FDMA single carrier FDMA
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • This application applies to UMTS networks, GSM (Global System for Mobile Communications), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), TD -SCDMA (Time Division Synchronous Code Division Multiple Access), LTE (Long Term Evolution), WLAN (Wireless Local Area Networks)/WiFi (Wireless Fidelity) And wireless network systems such as WiMAX ( Worldwide Interoperability for Microwave Access).
  • GSM Global System for Mobile Communications
  • GPRS General Packet Radio Service
  • CDMA2000 Code Division Multiple Access 2000
  • TD -SCDMA Time Division Synchronous Code Division Multiple Access
  • LTE Long Term Evolution
  • WLAN Wireless Local Area Networks
  • WiFi Wireless Fidelity
  • wireless network systems such as WiMAX ( Worldwide Interoperability for Microwave Access).
  • WiMAX Worldwide Interoperability for Microwave Access
  • the user equipment which may be a wireless terminal or a wired terminal, may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem.
  • the wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and with a mobile terminal
  • RAN Radio Access Network
  • the computers for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
  • a wireless terminal may also be called a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment.
  • PCS Personal Communication Service
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • a wireless terminal may also be called a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment.
  • a base station may refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface.
  • the base station can be used to interconvert the received air frame with the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), this application is not limited.
  • the base station controller (ie, the control node) may be a base station controller (BSC) in GSM or CDMA, or may be a radio network controller (RNC) in WCDMA. limited.
  • BSC base station controller
  • RNC radio network controller
  • system and “network” are used interchangeably herein.
  • the term “and/or” in this context is merely an association describing the associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists separately, and both A and B exist separately. B these three situations.
  • the character " /" in this article generally means that the contextual object is an "or” relationship.
  • An embodiment of the present application provides an uplink interference management method, which can be applied to a micro-zone node side. As shown in FIG. 2, the method may include:
  • the micro cell node receives the interference cancellation request sent by the macro cell node, where the interference cancellation request includes uplink configuration information of the user equipment UE, uplink scrambling code information of the UE, and Location information for determining a UE uplink dedicated physical control channel DPCCH.
  • the UE establishes a connection with the macro cell node, and the UE enters the uplink coverage of the micro cell node, but the UE does not establish a connection with the micro cell node, that is, the UE described in the embodiment of the present application is It is a macro cell UE (ie, a UE that establishes a connection with a macro cell). Since the micro cell node can receive the uplink signal of the macro cell UE, and the uplink signal of the macro cell UE is an interference signal for the micro cell, the macro cell UE can be eliminated from the received signal by the method of the present application. signal.
  • the interference cancellation request corresponds to the connected state UE of the macro cell node, and the interference cancellation request includes the uplink configuration information, the uplink scrambling code information, and the determining for the macro cell UE that is connected to the macro cell node.
  • the location information of the uplink DPCCH of the UE, the micro cell node can detect the corresponding UE according to the information, and eliminate the uplink signal of the detected macro cell UE.
  • the interference cancellation request corresponds to a macro cell UE that causes uplink interference to the micro cell
  • the interference cancellation request includes only uplink configuration information, uplink scrambling code information, and the macro cell UE that causes uplink interference to the micro cell.
  • the micro cell node After determining the location information of the uplink DPCCH of the UE, the micro cell node can detect the corresponding UE according to the information, and eliminate the uplink signal of the detected macro cell UE.
  • the micro cell node after receiving the interference cancellation request sent by the macro cell node, the micro cell node cancels the uplink signal of the corresponding macro cell UE according to the information included in the interference cancellation request, compared with the prior art.
  • the macro cell UE enters the uplink coverage area of the micro cell, the uplink interference caused by the macro cell UE to the micro cell can be eliminated, thereby improving the uplink capacity of the micro cell.
  • Another embodiment of the present application provides an uplink interference management method, which can be applied to a macro cell node side. As shown in FIG. 3, the method may include:
  • the macro cell node sends an interference cancellation request to the micro cell node, so that the micro cell node performs interference cancellation according to the interference cancellation request, where the interference cancellation request is used.
  • Another embodiment of the present application further provides an uplink interference management method. As shown in FIG. 4, the method may include:
  • the micro cell node sends capability information for supporting interference cancellation to the macro cell node.
  • the micro cell node may report the capability information that supports or does not support interference cancellation to the macro cell node, so that if the micro cell node does not have the capability of interference cancellation, the macro cell node does not need to perform determining to cause uplink interference to the micro cell.
  • the UE either sends an interference management request such as an interference cancellation request.
  • the case where the micro cell node does not support interference cancellation may be:
  • the micro cell node may not have the capability of canceling the uplink signal of the macro cell UE from the received uplink signal due to different device performance, or may be caused by the interference cancel operation already performed.
  • the macro cell node determines whether the micro cell node supports interference cancellation.
  • Steps 301 and 302 are optional steps, and may be performed according to actual needs and power consumption requirements. Further, steps 301 and 302 may also be performed after step 303.
  • the macro cell node performs a subsequent interference management operation in the case where the micro cell node supports interference cancellation, for example, transmits an interference cancellation request to the micro cell node. If the micro cell node does not support interference cancellation, the subsequent interference management operation may not be continued to reduce power consumption.
  • the macro cell node may initiate an interference management process actively, or may trigger the interference management process by the micro cell node.
  • the specific steps are as follows:
  • the micro cell node sends an interference management request and/or a periodic interference management request to the macro cell node.
  • the condition that the macro cell node is configured to send the interference cancellation request to the micro cell node may be: the macro cell node receives the interference management request and/or the periodic interference management request sent by the micro cell node, and may also determine the macro cell for the macro cell node.
  • the UE causes uplink interference to the micro cell.
  • the interference management request may be a display indication, and the macro cell node is required to initiate an interference management process.
  • the interference management request may also make an implicit indication, such as a micro cell The degree of uplink interference.
  • the micro cell node may send an interference management request to the macro cell node to eliminate uplink interference caused by the macro cell UE.
  • the degree of uplink interference received by the micro cell may be determined by uplink interference caused by the macro cell UE, or may be determined by uplink interference caused by all UEs received by the micro cell.
  • the interference management request may further be a period management request, and periodically initiate an interference management request to the macro cell node, so as to reduce uplink interference of the micro cell.
  • step 303 may not be performed.
  • the interference management process is triggered. For example, the UE may locate the UE location, and when the UE enters the uplink coverage of the micro cell, report the uplink interference to the micro cell to the macro cell, so that the macro cell node may determine that the macro cell UE causes uplink interference to the micro cell, and initiates interference. Management process.
  • the UE corresponding to the interference cancellation request may also be a UE that determines uplink interference to the micro cell determined by the macro cell node.
  • the macro cell node determines a UE that causes uplink interference to the micro cell.
  • the macro cell node may determine the UE that causes uplink interference to the micro cell according to the location information reported by the UE or the indication of the uplink interference caused by the UE reported by the UE. For example, when the UE detects that the signal quality of the adjacent micro cell is higher than a certain threshold, the UE may report an indication of the uplink interference to the micro cell.
  • step 304 is an optional step. If step 304 is not performed, step 305 may be replaced by: the macro cell node sends an interference cancellation request to the micro cell node.
  • the interference cancellation request may include information corresponding to the macro cell UE that causes interference to the micro cell and does not cause interference, including: uplink configuration information of the UE, uplink scrambling code information of the UE, and location information used to determine the uplink DPCCH of the UE.
  • the macro cell UE that causes uplink interference to the micro cell may be determined by using step 304, Then, in the interference cancellation request, the information about the macro cell UE that interferes with the micro cell may be used in the interference cancellation request, and only the information corresponding to the UE that causes the uplink interference to the micro cell is included.
  • the interference cancellation request may include uplink configuration information of the UE that causes uplink interference to the micro cell, uplink scrambling code information of the UE that causes uplink interference to the micro cell, and used to determine the pair of micro cells. Location information of the UE uplink DPCCH for uplink interference.
  • the location information for determining the uplink DPCCH of the UE includes at least one of the following: a timing difference between an uplink DPCCH of the UE and a common pilot channel of the micro cell, and a timing difference between a downlink DPCCH of the UE and a common pilot channel of the micro cell.
  • the uplink configuration information includes at least one of the following: slot format information of the uplink DPCCH, configuration information of the enhanced dedicated physical control channel E-DPCCH, and discontinuous transmission configuration information.
  • the interference cancellation message may also include other optional configuration information.
  • the optional parameters of the configuration information and the specific meaning of each parameter may be referred to Table 1.
  • E-DPCH Information Enhances dedicated physical control channel configuration information
  • the macro cell may be detected.
  • step 307 is performed to determine whether to perform interference cancellation according to the degree of uplink interference received, thereby reducing the workload of the micro-cell node and reducing power consumption when the degree of interference is low.
  • the micro cell node determines whether the uplink interference level is higher than a predefined threshold. When the uplink interference level is higher than the predefined threshold, execute 308; when the uplink interference level is not higher than the predefined threshold, the interference management process may not be continued, and step 309 may be continued.
  • the uplink interference level of the micro cell node is higher than the predefined threshold, and the uplink interference level caused by the UE corresponding to the interference cancellation request exceeds a predefined threshold, or the uplink interference level caused by all the macro cell UEs exceeds a predefined threshold.
  • the threshold may also be that the degree of uplink interference caused by UEs of all neighboring cells exceeds a predefined threshold.
  • the micro cell node cancels an uplink signal of the UE corresponding to the interference cancellation request in the received uplink signal.
  • the method in this embodiment may further include the following steps 309 and 310: the cell node reports the processing after receiving the interference cancellation request to the macro cell node, so that the macro cell node learns the interference cancellation request after the processing situation is known. Determine subsequent operations to avoid problems such as repeated transmissions by macro cell nodes. 309. The micro cell node sends an interference cancellation response to the macro cell node.
  • the interference cancellation response may be indicating that the interference cancellation request has been received, indicating that the interference cancellation operation is in progress, indicating that the interference cancellation is completed, indicating that the UE corresponding to the interference cancellation request is not detected, indicating that the interference cancellation is not supported, or indicating that the interference cancellation has been performed. Overload and so on. Therefore, the step 309 can also be performed after receiving the interference cancellation request sent by the macro cell node in step 305, or after the completion of the 306, 307 or 308 or during the processing thereof, the embodiment of the present invention does not limit this.
  • the macro cell node performs an operation of further reducing interference according to the interference cancellation response. Wherein, if the interference cancellation response indicates that the interference cancellation request has been received, the macro cell node may not repeatedly send the interference cancellation request. If the interference cancellation response indicates that the microcell node is not equipped with interference cancellation, the UE corresponding to the interference cancellation request is not detected, or the interference cancellation is overloaded, the macro cell node may continue to perform the operation of further reducing interference. For example, the UE that causes the uplink interference to the micro cell is switched to another frequency point, or the time division resource occupied by the macro cell UE and the micro cell UE is isolated by time division scheduling, or the uplink transmission power of the macro cell UE is reduced.
  • the embodiments of the present application can be applied to various Hetnet architectures, including a scenario in which a macro cell node and a micro cell node belong to the same control node, and a scenario in which the two do not belong to the same control node.
  • the control node to which the micro cell node belongs is the base station gateway
  • the control node to which the macro cell node belongs is the scenario of the macro cell radio network controller.
  • the information and the request between the macro cell node and the micro cell node can be forwarded through the intermediate device such as the base station gateway and the RNC.
  • the embodiment of the present application can be applied to other Hetnet architectures, which is not illustrated in this embodiment.
  • the macro cell node sends an interference cancellation request to the micro cell node, so that the micro cell node can receive the information included in the interference cancellation request after receiving the interference cancellation request sent by the macro cell node.
  • the uplink signal corresponding to the macro cell UE is eliminated. Compared with the prior art, when the macro cell UE enters the uplink coverage area of the micro cell, the uplink interference caused by the macro cell UE to the micro cell can be eliminated, thereby improving the uplink capacity of the micro cell.
  • the UE before the UE sends the interference cancellation request, it determines the UE that causes uplink interference to the micro cell, and narrows the UE range that needs to perform interference cancellation, which not only reduces the amount of information included in the interference cancellation request, but also reduces the micro cell node. Interference eliminates the load.
  • Another embodiment of the present application further provides a micro cell node. As shown in FIG. 5, the method includes: a receiving unit 41 and a eliminating unit 42.
  • the receiving unit 41 is configured to receive an interference cancellation request sent by the macro cell node, where the interference cancellation request includes uplink configuration information of the user equipment UE, uplink scrambling code information of the UE, and determining an uplink dedicated physical control channel DPCCH of the UE. location information.
  • the eliminating unit 42 is configured to perform interference cancellation according to the interference cancellation request received by the receiving unit 41.
  • the eliminating unit 42 includes: a detecting module 421 and a eliminating module 422.
  • the detecting module 421 is configured to detect an uplink signal of the UE corresponding to the interference cancellation request according to the uplink configuration information included in the interference cancellation request, the uplink scrambling code information of the UE, and the location information used to determine the uplink DPCCH of the UE.
  • the canceling module 422 is configured to cancel an uplink signal of the UE corresponding to the interference cancellation request in the received uplink signal.
  • the uplink configuration information includes at least one of the following: slot format information of the uplink DPCCH, configuration information of the enhanced dedicated physical control channel E-DPCCH, and discontinuous transmission configuration information.
  • the location information for determining the uplink DPCCH of the UE includes at least one of the following: a timing difference between the uplink DPCCH of the UE and the common pilot channel of the micro cell, and a timing difference between the downlink DPCCH of the UE and the common pilot channel of the micro cell.
  • the UE is a UE that determines uplink interference to the micro cell determined by the macro cell node.
  • the cell node may further include: a requesting unit 43.
  • the requesting unit 43 is configured to send an interference management request and/or a periodic interference management to the macro cell node before the receiving unit 41 receives the interference cancellation request sent by the macro cell node. begging.
  • the macro cell node triggers sending the interference cancellation request under any one of the following conditions: the macro cell node receives an interference management request sent by the micro cell node; and the macro cell node receives the micro A periodic interference management request sent by the regional node; the macro cell node determines that the UE causes uplink interference to the micro cell.
  • the eliminating unit 42 may further include: a determining module 423.
  • a determining module 423 configured to: after the detecting module 421 detects an uplink signal of the UE corresponding to the interference cancellation request, when the uplink interference level is higher than a predefined threshold, triggering the eliminating module 422 to perform the received The uplink signal of the UE is cancelled in the uplink signal.
  • the cell node may further include: a response unit 44.
  • the response unit 44 is configured to: after the receiving unit 41 receives the interference cancellation request sent by the macro cell node, send an interference cancellation response to the macro cell node, so that the macro cell node performs further according to the interference; Interference-free operation.
  • micro cell node may further include: a capability unit 45.
  • the capability unit 45 is configured to send, to the macro cell node, capability information that supports interference cancellation, before the receiving unit 41 receives the interference cancellation request sent by the macro cell node, so that the macro cell node supports the micro cell node.
  • an interference cancellation request is sent to the micro cell node.
  • Another embodiment of the present application further provides a macro cell node, as shown in FIG. 6, including: a sending unit 51.
  • the sending unit 51 is configured to send an interference cancellation request to the micro cell node, so that the micro cell node performs interference cancellation according to the interference cancellation request.
  • the interference cancellation request includes uplink configuration information of the user equipment UE, uplink scrambling code information of the UE, and location information used to determine the uplink dedicated physical control channel DPCCH of the UE.
  • the sending unit 51 includes: a determining module 511 and a sending module 512.
  • the determining module 511 is configured to determine a UE that causes uplink interference to the micro cell.
  • the sending module 512 is configured to send, according to the determination result obtained by the determining module 511, an interference cancellation request to the micro cell node, where the interference cancellation request includes uplink configuration information of the UE that causes uplink interference to the micro cell.
  • the uplink configuration information includes at least one of the following: slot format information of the uplink DPCCH, configuration information of the enhanced dedicated physical control channel E-DPCCH, and discontinuous transmission configuration information.
  • the location information for determining the uplink DPCCH of the UE includes at least one of the following: a timing difference between the uplink DPCCH of the UE and the common pilot channel of the micro cell, and a timing difference between the downlink DPCCH of the UE and the common pilot channel of the micro cell.
  • the macro cell node may further include: a trigger unit 52.
  • the triggering unit 52 is configured to trigger the sending unit 51 to perform sending the interference cancellation request under any of the following conditions: receiving an interference management request sent by the micro cell node; or receiving the micro cell node sending Periodic interference management request; or determining that the UE causes uplink interference to the micro cell.
  • the macro cell node further includes: a receiving unit 53 and a descrambling unit 54.
  • the receiving unit 53 is configured to receive, after the sending unit 51 sends an interference cancellation request to the micro cell node, an interference cancellation response sent by the micro cell node.
  • the interference mitigation unit 54 is configured to perform an operation of further reducing interference according to the interference cancellation response received by the receiving unit 53.
  • the macro cell node further includes: a capability unit 55.
  • the capability unit 55 is configured to receive, after the sending unit 51 sends the interference cancellation request to the micro cell node, capability information that is supported by the micro cell node to support interference cancellation.
  • the sending unit 51 is further configured to: when the micro cell node supports interference cancellation, perform the sending an interference cancellation request to the micro cell node.
  • the system may include: a macro cell node and a micro cell node.
  • the macro cell node is configured to send an interference cancellation request to the micro cell node, so that the micro cell node performs interference cancellation according to the interference cancellation request, where the interference cancellation request includes an uplink of the user equipment UE.
  • the micro cell node is configured to receive an interference cancellation request sent by a macro cell node, where the interference cancellation request includes uplink configuration information of the user equipment UE, uplink scrambling code information of the UE, and used to determine a UE uplink dedicated physical control channel. Position information of the DPCCH; performing interference cancellation according to the interference cancellation request.
  • the macro cell node sends an interference cancellation request to the micro cell node, so that after receiving the interference cancellation request sent by the macro cell node, the micro cell node receives the interference cancellation request.
  • the uplink signal corresponding to the macro cell UE is cancelled according to the information included in the interference cancellation request.
  • the uplink interference caused by the macro cell UE to the micro cell may be eliminated. Increase the upstream capacity of the micro cell.
  • Another embodiment of the present application further provides a micro cell node. As shown in FIG. 7, the method includes: a receiver 61 and a processor 62.
  • the receiver 61 is configured to receive an interference cancellation request sent by the macro cell node, where the interference cancellation request includes uplink configuration information of the user equipment UE, uplink scrambling code information of the UE, and determining an uplink dedicated physical control channel DPCCH of the UE. location information.
  • the processor 62 is configured to perform interference cancellation according to the interference cancellation request.
  • the processor 62 is further configured to: detect, according to the uplink configuration information included in the interference cancellation request, the uplink scrambling code information of the UE, and the location information used to determine the uplink DPCCH of the UE, to detect the interference cancellation request. Uplink signal of the UE; canceling the uplink signal of the UE corresponding to the interference cancellation request in the received uplink signal.
  • the UE is a UE that determines uplink interference to the micro cell determined by the macro cell node.
  • the uplink configuration information includes at least one of the following: a time slot of the uplink DPCCH The information, the configuration information of the dedicated physical control channel E-DPCCH, and the discontinuous transmission of the configuration information.
  • the location information for determining the uplink DPCCH of the UE includes at least one of the following: a timing difference between the uplink DPCCH of the UE and the common pilot channel of the micro cell, and a timing difference between the downlink DPCCH of the UE and the common pilot channel of the micro cell.
  • micro cell node further includes: a transmitter 63.
  • the transmitter 63 is configured to send an interference management request and/or a periodic interference management request to the macro cell node before the receiver 61 receives the interference cancellation request sent by the macro cell node.
  • the macro cell node triggers sending the interference cancellation request under any one of the following conditions: the macro cell node receives an interference management request sent by the micro cell node; and the macro cell node receives the micro A periodic interference management request sent by the regional node; the macro cell node determines that the UE causes uplink interference to the micro cell.
  • the receiver 61 is further configured to: after the processor 62 detects an uplink signal of the UE corresponding to the interference cancellation request, when the uplink interference level is higher than a predefined threshold, perform the received The uplink signal of the UE is cancelled in the uplink signal.
  • the transmitter 63 is further configured to: after the receiver 61 receives the interference cancellation request sent by the macro cell node, send an interference cancellation response to the macro cell node, so that the macro cell node is configured according to the interference Eliminate the response to perform further interference reduction operations.
  • the transmitter 63 is further configured to: before the receiver 61 receives the interference cancellation request sent by the macro cell node, send, to the macro cell node, capability information that supports interference cancellation, so that the macro cell node is The micro cell node transmits an interference cancellation request to the micro cell node in case of interference cancellation.
  • Another embodiment of the present application further provides a macro cell node, as shown in FIG. 8, including: a transmitter 71.
  • the transmitter 71 is configured to send an interference cancellation request to the micro cell node, so that the micro cell node performs interference cancellation according to the interference cancellation request.
  • the interference cancellation request includes uplink configuration information of the user equipment UE, uplink scrambling code information of the UE, and a location information for determining the uplink dedicated physical control channel DPCCH of the UE. Interest.
  • the transmitter 71 is further configured to: determine a UE that causes uplink interference to the micro cell; and send an interference cancellation request to the micro cell node according to the determination result; where the interference cancellation request includes the pair of micro cells
  • the uplink configuration information includes at least one of the following: time slot format information of the uplink DPCCH, configuration information of the enhanced dedicated physical control channel E-DPCCH, and discontinuous transmission configuration information.
  • the location information for determining the uplink DPCCH of the UE includes at least one of the following: a timing difference between the uplink DPCCH of the UE and the common pilot channel of the micro cell, and a timing difference between the downlink DPCCH of the UE and the common pilot channel of the micro cell.
  • the transmitter 71 triggers the transmitter 71 to perform the sending of the interference cancellation request under any of the following conditions: receiving an interference management request sent by the micro cell node; or receiving the micro cell The periodic interference management request sent by the node; or determining that the UE causes uplink interference to the micro cell.
  • the macro cell node further includes: a receiver 72 and a processor 73.
  • the receiver 72 is configured to receive an interference cancellation response sent by the micro cell node after the transmitter 71 sends an interference cancellation request to the micro cell node.
  • the processor 73 is configured to perform an operation of further reducing interference according to the interference cancellation response received by the receiver 72.
  • the receiver 72 is further configured to: before the transmitter 71 sends an interference cancellation request to the micro cell node, receive capability information that is sent by the micro cell node to support interference cancellation;
  • the transmitter 71 is further configured to: when the micro cell node supports interference cancellation, perform the sending an interference cancellation request to the micro cell node.
  • the macro cell node sends an interference cancellation request to the micro cell node, so that the micro cell node receives the dry message sent by the macro cell node.
  • the uplink signal of the corresponding macro cell UE is cancelled according to the information included in the interference cancellation request.
  • the macro cell UE may be eliminated from the micro cell. The resulting uplink interference increases the uplink capacity of the micro cell.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the units described as separate components may or may not be physically separated, and the components displayed as the units may or may not be physical units, that is, may be located at one place, or may be distributed to a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present application or the part that contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including several
  • the instructions are for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

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Abstract

本申请的实施例提供一种上行干扰管理方法、节点及系统,涉及无线通信领域,可以降低宏小区UE对相邻微小区造成的干扰,从而提高微小区的上行容量。本申请的方法包括:微小区节点接收宏小区节点发送的干扰消除请求,其中所述干扰消除请求中包含用户设备UE的上行配置信息、UE的上行扰码信息和用于确定UE上行专用物理控制信道DPCCH的位置信息;根据所述干扰取消请求进行干扰消除。本申请的实施例主要用于消除宏小区UE对微小区的干扰的过程中。

Description

一种上行干扰管理方法、 节点及系统
技术领域
本申请涉及无线通信领域, 尤其涉及一种上行干扰管理方法、 节点及 系统。 背景技术
无线通信领域面临着数据业务爆炸增长的压力,为了提高网络容量和 降低传输成本,业内提出了一种异构网络( Heterogeneous Network, Hetnet ) 技术。 Hetnet由多个不同大小、 不同类型的小区一起构成, 包括: 宏小区
( Macro cell )和 小区。 其中 小区包括: 型小区 ( Micro cell )、 小区 ( Pico Cell )、 毫 小区 ( Femto Cell )、 远端射频头 ( Remote Radio Head, RRH ) 形态的小区等。 通过为话务密集的区域部署更多的微小区, 可以有效提高该区域的网络容量, 并且微小区因规模较小, 其建设成本
( Capital Expenditure , Cap ax ) 和运营成本 ( Operating Expense , Opex ) 都比较低, 因此 Hetnet受到众多运营商的重视, 是无线网络演进的一个重 要方向。
如图 1所示, 为 Hetnet的典型布网方式。 在这种布网方式中, 用户设 备( User Equipment, UE )与宏小区建立连接后会执行正常的上行信号传 输。
在上述 Hetnet 的实现过程中, 申请人发现现有技术中至少存在如下 问题: 当接入宏小区的 UE进入到微小区的上行覆盖区域但还未与微小区 建立连接时, 由于 UE在微小区的上行覆盖区域中, 微小区会接收到宏小 区 UE发射的上行信号, 因此宏小区 UE的上行信号会对于微小区造成严 重的上行干扰, 从而会影响对微小区 UE上行信号的接收和解调, 导致微 小区上行容量降低。 发明内容
本申请的实施例提供一种上行干扰管理方法、 节点及系统, 可以降低 宏小区 UE对微小区造成的干扰, 从而提高微小区的上行容量。
本申请的第一方面提供一种上行干扰管理方法, 包括:
微小区节点接收宏小区节点发送的干扰消除请求,其中所述干扰消除 请求中包含用户设备 UE的上行配置信息、 UE的上行扰码信息和用于确 定 UE上行专用物理控制信道 DPCCH的位置信息;
根据所述干扰取消请求进行干扰消除。
在一种可能的实现方式中, 结合第一方面, 所述根据所述干扰消除请 求进行干扰消除, 包括:
根据所述干扰消除请求中包含的上行配置信息、 UE的上行扰码信息 和用于确定 UE上行 DPCCH的位置信息, 检测所述干扰消除请求对应的 UE的上行信号;
在接收到的上行信号中消除所述干扰消除请求对应的 UE 的上行信 号。
在另一种可能的实现方式中, 结合第一方面和上述可能的实现方式, 所述 UE为所述宏小区节点确定的对微小区造成上行干扰的 UE。
在另一种可能的实现方式中, 结合第一方面和上述可能的实现方式, 所述上行配置信息包括以下至少一种: 上行 DPCCH的时隙格式信息、 增 强专用物理控制信道 E-DPCCH的配置信息、 不连续发送配置信息;
所述用于确定 UE 上行 DPCCH 的位置信息包括以下至少一种: UE 的上行 DPCCH 与微小区的公共导频信道的定时差、 UE 的下行 DPCCH 与微小区的公共导频信道的定时差。
在另一种可能的实现方式中, 结合第一方面和上述可能的实现方式, 在接收宏小区节点发送的干扰消除请求之前, 所述方法还包括:
向所述宏小区节点发送干扰管理请求和 /或周期干扰管理请求; 其中,所述宏小区节点在以下任一种条件下触发发送所述干扰消除请 求: 所述宏小区节点接收到所述微小区节点发送的干扰管理请求; 所述宏 小区节点接收到所述微小区节点发送的周期干扰管理请求;所述宏小区节 点确定所述 UE对微小区造成上行干扰。
在另一种可能的实现方式中, 结合第一方面和上述可能的实现方式, 在检测所述干扰消除请求对应的 UE的上行信号之后, 所述方法还包括: 当上行干扰程度高于预定义门限时,执行所述在接收到的上行信号中 取消所述 UE的上行信号。
在另一种可能的实现方式中, 结合第一方面和上述可能的实现方式, 在接收宏小区节点发送的干扰消除请求之后, 所述方法还包括:
向所述宏小区节点发送干扰消除响应,以便所述宏小区节点根据所述 干扰消除响应执行进一步降干扰的操作。
在另一种可能的实现方式中, 结合第一方面和上述可能的实现方式, 在接收宏小区节点发送的干扰消除请求之前, 所述方法还包括:
向所述宏小区节点发送支持干扰消除的能力信息。
本申请的第二方面提供一种上行干扰管理方法, 包括:
宏小区节点向微小区节点发送干扰消除请求,以使得所述微小区节点 根据所述干扰取消请求进行干扰消除;
其中, 所述干扰消除请求中包含用户设备 UE 的上行配置信息、 UE 的上行扰码信息和用于确定 UE上行专用物理控制信道 DPCCH的位置信 息。
在一种可能的实现方式中, 结合第二方面, 所述向微小区节点发送干 扰消除请求, 包括:
确定对微小区造成上行干扰的 UE;
根据确定结果向所述微小区节点发送干扰消除请求,所述干扰消除请 求中包含所述对微小区造成上行干扰的 UE的上行配置信息、 所述对微小 区造成上行干扰的 UE的上行扰码信息和用于确定所述对微小区造成上行 干扰的 UE上行 DPCCH的位置信息。 在另一种可能的实现方式中, 结合第二方面和上述可能的实现方式, 所述上行配置信息包括以下至少一种: 上行 DPCCH的时隙格式信息、 增 强专用物理控制信道 E-DPCCH的配置信息、 不连续发送配置信息;
所述用于确定 UE 上行 DPCCH 的位置信息包括以下至少一种: UE 的上行 DPCCH 与微小区的公共导频信道的定时差、 UE 的下行 DPCCH 与微小区的公共导频信道的定时差。
在另一种可能的实现方式中, 结合第二方面和上述可能的实现方式, 在以下任一种情况下触发发送所述干扰消除请求:
接收到所述微小区节点发送的干扰管理请求;
或, 接收到所述微小区节点发送的周期干扰管理请求;
或, 确定 UE对微小区造成上行干扰。
在另一种可能的实现方式中, 结合第二方面和上述可能的实现方式, 在向微小区节点发送干扰取消请求之后, 所述方法还包括:
接收所述微小区节点发送的干扰取消响应;
根据所述干扰取消响应执行进一步降干扰的操作。
在另一种可能的实现方式中, 结合第二方面和上述可能的实现方式, 在向微小区节点发送干扰消除请求之前, 所述方法还包括:
接收所述微小区节点发送的支持干扰取消的能力信息;
在所述微小区节点支持干扰取消的情况下,执行所述向微小区节点发 送干扰消除请求。
本申请的第三方面提供一种微小区节点, 包括:
接收单元, 用于接收宏小区节点发送的干扰消除请求, 其中所述干扰 消除请求中包含用户设备 UE的上行配置信息、 UE的上行扰码信息和用 于确定 UE上行专用物理控制信道 DPCCH的位置信息;
消除单元, 用于根据所述干扰取消请求进行干扰消除。
在一种可能的实现方式中, 结合第三方面, 所述消除单元包括: 检测模块, 用于根据所述干扰消除请求中包含的上行配置信息、 UE 的上行扰码信息和用于确定 UE上行 DPCCH的位置信息, 检测所述干扰 消除请求对应的 UE的上行信号;
消除模块,用于在接收到的上行信号中消除所述干扰消除请求对应的 UE的上行信号。
在另一种可能的实现方式中, 结合第三方面和上述可能的实现方式, 所述 UE为所述宏小区节点确定的对微小区造成上行干扰的 UE。
在另一种可能的实现方式中, 结合第三方面和上述可能的实现方式, 所述上行配置信息包括以下至少一种: 上行 DPCCH的时隙格式信息、 增 强专用物理控制信道 E-DPCCH的配置信息、 不连续发送配置信息;
所述用于确定 UE 上行 DPCCH 的位置信息包括以下至少一种: UE 的上行 DPCCH 与微小区的公共导频信道的定时差、 UE 的下行 DPCCH 与微小区的公共导频信道的定时差。
在另一种可能的实现方式中, 结合第三方面和上述可能的实现方式, 所述微小区节点还包括:
响应单元,用于在所述接收单元接收宏小区节点发送的干扰消除请求 之后, 向所述宏小区节点发送干扰消除响应, 以便所述宏小区节点根据所 述干扰;肖除响应执行进一步降干扰的操作。
在另一种可能的实现方式中, 结合第三方面和上述可能的实现方式, 所述微小区节点还包括:
能力单元,用于在所述接收单元接收宏小区节点发送的干扰消除请求 之前, 向所述宏小区节点发送支持干扰消除的能力信息。
本申请的第四方面提供一种宏小区节点, 包括:
发送单元, 用于向微小区节点发送干扰消除请求, 以使得所述微小区 节点根据所述干扰取消请求进行干扰消除;
其中, 所述干扰消除请求中包含用户设备 UE 的上行配置信息、 UE 的上行扰码信息和用于确定 UE上行专用物理控制信道 DPCCH的位置信 息。 在一种可能的实现方式中, 结合第四方面, 所述发送单元包括: 确定模块, 用于确定对微小区造成上行干扰的 UE;
发送模块,用于根据所述确定模块得到的确定结果向所述微小区节点 发送干扰消除请求,所述干扰消除请求中包含所述对微小区造成上行干扰 的 UE的上行配置信息、 所述对微小区造成上行干扰的 UE的上行扰码信 息和用于确定所述对微小区造成上行干扰的 UE上行 DPCCH的位置信息。
在另一种可能的实现方式中, 结合第四方面和上述可能的实现方式, 所述上行配置信息包括以下至少一种: 上行 DPCCH的时隙格式信息、 增 强专用物理控制信道 E-DPCCH的配置信息、 不连续发送配置信息;
所述用于确定 UE 上行 DPCCH 的位置信息包括以下至少一种: UE 的上行 DPCCH 与微小区的公共导频信道的定时差、 UE 的下行 DPCCH 与微小区的公共导频信道的定时差。
在另一种可能的实现方式中, 结合第四方面和上述可能的实现方式, 所述宏小区节点还包括: 扰取消请求: 接收到所述微小区节点发送的干扰管理请求; 或, 接收到所 述微小区节点发送的周期干扰管理请求; 或确定 UE对微小区造成上行干 扰。
在另一种可能的实现方式中, 结合第四方面和上述可能的实现方式, 所述宏小区节点还包括:
接收单元, 用于在所述发送单元向微小区节点发送干扰取消请求之 后, 接收所述微小区节点发送的干扰取消响应;
降扰单元,用于根据所述接收单元接收的干扰取消响应执行进一步降 干扰的操作。
在另一种可能的实现方式中, 结合第四方面和上述可能的实现方式, 所述宏小区节点还包括:
能力单元, 用于在所述发送单元向微小区节点发送干扰消除请求之 前, 接收所述微小区节点发送的支持干扰取消的能力信息;
所述发送单元, 还用于在所述微小区节点支持干扰取消的情况下, 执 行所述向微小区节点发送干扰消除请求。
本申请的第五方面提供一种干扰管理系统, 包括: 微小区节点和宏小 区节点;
所述微小区节点, 用于接收宏小区节点发送的干扰消除请求, 其中所 述干扰消除请求中包含用户设备 UE的上行配置信息、 UE的上行扰码信 息和用于确定 UE上行专用物理控制信道 DPCCH的位置信息; 根据所述 干扰取消请求进行干扰消除;
所述宏小区节点, 用于向微小区节点发送干扰消除请求, 以使得所述 微小区节点根据所述干扰取消请求进行干扰消除。
本申请的第六方面提供一种微小区节点, 包括:
接收器, 用于接收宏小区节点发送的干扰消除请求, 其中所述干扰消 除请求中包含用户设备 UE的上行配置信息、 UE的上行扰码信息和用于 确定 UE上行专用物理控制信道 DPCCH的位置信息;
处理器, 用于根据所述干扰取消请求进行干扰消除。
在一种可能的实现方式中, 结合第六方面, 所述处理器还用于: 根据 所述干扰消除请求中包含的上行配置信息、 UE的上行扰码信息和用于确 定 UE上行 DPCCH的位置信息, 检测所述干扰消除请求对应的 UE的上 行信号; 在接收到的上行信号中消除所述干扰消除请求对应的 UE的上行 信号。
在另一种可能的实现方式中, 结合第六方面和上述可能的实现方式, 所述 UE为所述宏小区节点确定的对微小区造成上行干扰的 UE。
在另一种可能的实现方式中, 结合第六方面和上述可能的实现方式, 所述上行配置信息包括以下至少一种: 上行 DPCCH的时隙格式信息、 增 强专用物理控制信道 E-DPCCH的配置信息、 不连续发送配置信息;
所述用于确定 UE 上行 DPCCH 的位置信息包括以下至少一种: UE 的上行 DPCCH 与微小区的公共导频信道的定时差、 UE 的下行 DPCCH 与微小区的公共导频信道的定时差。
在另一种可能的实现方式中, 结合第六方面和上述可能的实现方式, 所述微小区节点还包括:
发射器, 用于在所述接收器接收宏小区节点发送的干扰消除请求之 前, 向所述宏小区节点发送干扰管理请求和 /或周期干扰管理请求;
其中,所述宏小区节点在以下任一种条件下触发发送所述干扰消除请 求: 所述宏小区节点接收到所述微小区节点发送的干扰管理请求; 所述宏 小区节点接收到所述微小区节点发送的周期干扰管理请求;所述宏小区节 点确定所述 UE对微小区造成上行干扰。
在另一种可能的实现方式中, 结合第六方面和上述可能的实现方式, 所述接收器还用于: 在所述处理器检测所述干扰消除请求对应的 UE的上 行信号之后, 当上行干扰程度高于预定义门限时, 执行所述在接收到的上 行信号中取消所述 UE的上行信号。
在另一种可能的实现方式中, 结合第六方面和上述可能的实现方式, 所述发射器还用于:在所述接收器接收宏小区节点发送的干扰消除请求之 后, 向所述宏小区节点发送干扰消除响应, 以便所述宏小区节点根据所述 干扰消除响应执行进一步降干扰的操作。
在另一种可能的实现方式中, 结合第六方面和上述可能的实现方式, 所述发射器还用于:在所述接收器接收宏小区节点发送的干扰消除请求之 前, 向所述宏小区节点发送支持干扰消除的能力信息。
本申请的第七方面提供一种宏小区节点, 包括:
发射器, 用于向微小区节点发送干扰消除请求, 以使得所述微小区节 点根据所述干扰取消请求进行干扰消除;
其中, 所述干扰消除请求中包含用户设备 UE 的上行配置信息、 UE 的上行扰码信息和用于确定 UE上行专用物理控制信道 DPCCH的位置信 息。 在一种可能的实现方式中, 结合第七方面, 所述发送器还用于: 确定 对微小区造成上行干扰的 UE; 根据确定结果向所述微小区节点发送干扰 消除请求; 其中, 所述干扰消除请求中包含所述对微小区造成上行干扰的 UE的上行配置信息、 所述对微小区造成上行干扰的 UE的上行扰码信息 和用于确定所述对微小区造成上行干扰的 UE上行 DPCCH的位置信息。
在另一种可能的实现方式中, 结合第七方面和上述可能的实现方式, 所述上行配置信息包括以下至少一种: 上行 DPCCH的时隙格式信息、 增 强专用物理控制信道 E-DPCCH的配置信息、 不连续发送配置信息;
所述用于确定 UE 上行 DPCCH 的位置信息包括以下至少一种: UE 的上行 DPCCH 与微小区的公共导频信道的定时差、 UE 的下行 DPCCH 与微小区的公共导频信道的定时差。
在另一种可能的实现方式中, 结合第七方面和上述可能的实现方式, 请求: 接收到所述微小区节点发送的干扰管理请求; 或, 接收到所述微小 区节点发送的周期干扰管理请求; 或确定 UE对微小区造成上行干扰。
在另一种可能的实现方式中, 结合第七方面和上述可能的实现方式, 所述宏小区节点还包括:
接收器, 用于在所述发射器向微小区节点发送干扰取消请求之后, 接 收所述微小区节点发送的干扰取消响应;
处理器,用于根据所述接收器接收的干扰取消响应执行进一步降干扰 的操作。
在另一种可能的实现方式中, 结合第七方面和上述可能的实现方式, 所述接收器还用于: 在所述发射器向微小区节点发送干扰消除请求之前, 接收所述微小区节点发送的支持干扰取消的能力信息;
所述发送器, 还用于在所述微小区节点支持干扰取消的情况下, 执行 所述向微小区节点发送干扰消除请求。
本申请实施例提供的上行干扰管理方法、 节点及系统, 微小区节点在 接收到宏小区节点发送的干扰消除请求后,根据干扰消除请求中包含的信 息消除对应宏小区 UE的上行信号, 与现有技术相比, 在宏小区 UE进入 微小区的上行覆盖区域时,可以消除宏小区 UE对微小区造成的上行干扰, 从而提高微小区的上行容量。 附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案,下面将对 实施例或现有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本申请的一些实施例,对于本领域普通技术人员 来讲, 在不付出创造性劳动性的前提下, 还可以根据这些附图获得其他的 附图。
图 1为背景技术中的一种 Hetnet场景示意图;
图 2为本申请一实施例中的一种上行干扰管理方法流程图;
图 3为本申请另一实施例中的一种上行干扰管理方法流程图; 图 4为本申请另一实施例中的一种上行干扰管理方法流程图; 图 5为本申请另一实施例中的一种微小区节点组成示意图;
图 6为本申请另一实施例中的一种宏小区节点组成示意图;
图 7为本申请另一实施例中的一种微小区节点组成示意图;
图 8为本申请另一实施例中的一种宏小区节点组成示意图。 具体实施方式
以下描述中, 为了说明而不是为了限定, 提出了诸如特定系统结构、 接口、 技术之类的具体细节, 以便透切理解本申请。 然而, 本领域的技术 在其它情况中, 省略对众所周知的装置、 电路以及方法的详细说明, 以免 不必要的细节妨碍本申请的描述。
本文中描述的技术可用于各种通信系统, 例如当前 2G, 3G通信系统 和下一代通信系统, 例如全球移动通信系统 ( GSM , Global System for Mobile communications ) , 码分多址 ( CDMA , Code Division Multiple Access ) 系统, 时分多址 ( TDMA , Time Division Multiple Access ) 系统, 宽带码分多址 ( WCDMA , Wideband Code Division Multiple Access Wireless ), 频分多址 ( FDMA, Frequency Division Multiple Addressing ) 系统, 正交频分多址 ( OFDMA, Orthogonal Frequency-Division Multiple Access )系统,单载波 FDMA( SC-FDMA )系统,通用分组无线业务( GPRS , General Packet Radio Service )系统,长期演进( LTE , Long Term Evolution ) 系统, 以及其他此类通信系统。
本申请适用于 UMTS 网络、 GSM ( Global System for Mobile Communications,全球移动通信系统 )、 GPRS( General Packet Radio Service, 通用分组无线业务)、 CDMA2000 ( Code Division Multiple Access 2000 , 码分多址 2000 )、 TD-SCDMA ( Time Division Synchronous Code Division Multiple Access,时分同步码分多址)、 LTE ( Long Term Evolution,长期演 进)、 WLAN( Wireless Local Area Networks ,无线局域网络 )/WiFi( Wireless Fidelity, 无线保真 )和 WiMAX ( Worldwide Interoperability for Microwave Access , 全球微波互联接入)等无线网络系统。 尤其是这些无线网络系统 中布有微小区基站的场景。
本文中结合用户设备和 /或基站和 /或基站控制器来描述各种方面。 用户设备, 可以是无线终端也可以是有线终端, 无线终端可以是指向 用户提供语音和 /或数据连通性的设备, 具有无线连接功能的手持式设备、 或连接到无线调制解调器的其他处理设备。 无线终端可以经无线接入网 (例如, RAN, Radio Access Network ) 与一个或多个核心网进行通信, 无线终端可以是移动终端, 如移动电话(或称为"蜂窝"电话)和具有移动 终端的计算机, 例如, 可以是便携式、 袖珍式、 手持式、 计算机内置的或 者车载的移动装置, 它们与无线接入网交换语言和 /或数据。 例如, 个人 通信业务 ( PCS , Personal Communication Service ) 电话、 无绳电话、 会 话发起协议( SIP )话机、 无线本地环路 ( WLL , Wireless Local Loop )站、 个人数字助理 (PDA , Personal Digital Assistant ) 等设备。 无线终端也可 以称为系统、 订户单元 ( Subscriber Unit )、 订户站 ( Subscriber Station ), 移动站 ( Mobile Station )、 移动台 ( Mobile ), 远程站 ( Remote Station )、 接入点 ( Access Point )、 远程终端 ( Remote Terminal )、 接入终端 (Access Terminal ), 用户终端 ( User Terminal )、 用户代理 (User Agent )、 用户设 备 ( User Device )、 或用户装备 ( User Equipment )。
基站(即, 节点)可以是指接入网中在空中接口上通过一个或多个扇 区与无线终端通信的设备。 基站可用于将收到的空中帧与 IP分组进行相 互转换, 作为无线终端与接入网的其余部分之间的路由器, 其中接入网的 其余部分可包括网际协议(IP ) 网络。 基站还可协调对空中接口的属性管 理。 例如, 基站可以是 GSM或 CDMA中的基站 ( BTS , Base Transceiver Station ), 也可以是 WCDMA 中的基站 ( NodeB ), 还可以是 LTE 中的演 进型基站 ( NodeB或 eNB或 e-NodeB , evolutional Node B ), 本申请并不 限定。
基站控制器 (即, 控制节点), 可以是 GSM或 CDMA中的基站控制 器 ( BSC , base station controller ), 也可以是 WCDMA中的无线网络控制 器 (RNC , Radio Network Controller ), 本申请并不限定。
另外, 本文中术语"系统"和"网络"在本文中常被可互换使用。 本文中 术语"和 /或", 仅仅是一种描述关联对象的关联关系, 表示可以存在三种 关系 , 例如, A和 /或 B , 可以表示: 单独存在 A , 同时存在 A和 B , 单 独存在 B这三种情况。 另外, 本文中字符" /", 一般表示前后关联对象是 一种"或"的关系。 本申请一实施例提供一种上行干扰管理方法,可以应用于微小区节点 侧, 如图 2所示, 该方法可以包括:
101、 微小区节点接收宏小区节点发送的干扰消除请求, 其中所述干 扰消除请求中包含用户设备 UE的上行配置信息、 UE的上行扰码信息和 用于确定 UE上行专用物理控制信道 DPCCH的位置信息。
在本申请的实施例中, UE与宏小区节点建立连接, 并且 UE进入微 小区节点的上行覆盖范围, 但是 UE未与微小区节点建立连接, 也就是说 本申请实施例中所描述的 UE 均为宏小区 UE (即与宏小区建立连接的 UE )。 由于微小区节点可以接收到宏小区 UE的上行信号, 而此时宏小区 U E的上行信号对于微小区而言是干扰信号, 因此可以通过本申请的方法 从接收到的信号中消除宏小区 UE的信号。
102、 根据所述干扰消除请求进行干扰消除。
其中, 所述干扰消除请求对应的是宏小区节点的连接态 UE, 则在干 扰消除请求中包含接入到所述宏小区节点的宏小区 UE的上行配置信息、 上行扰码信息和用于确定 UE上行 DPCCH的位置信息, 微小区节点根据 这些信息便可以检测到对应的 UE, 并将检测到的宏小区 UE的上行信号 消除。
或者, 所述干扰消除请求对应的是对微小区造成上行干扰的宏小区 UE, 则在干扰消除请求中仅包含对微小区造成上行干扰的宏小区 UE 的 上行配置信息、 上行扰码信息和用于确定 UE上行 DPCCH的位置信息, 微小区节点根据这些信息便可以检测到对应的 UE, 并将检测到的宏小区 UE的上行信号消除。
本申请实施例提供的上行干扰管理方法,微小区节点在接收到宏小区 节点发送的干扰消除请求后,根据干扰消除请求中包含的信息消除对应宏 小区 UE的上行信号, 与现有技术相比, 在宏小区 UE进入微小区的上行 覆盖区域时, 可以消除宏小区 UE对微小区造成的上行干扰, 从而提高微 小区的上行容量。
本申请另一实施例提供一种上行干扰管理方法,可以应用于宏小区节 点侧, 如图 3所示, 该方法可以包括:
201、 宏小区节点向微小区节点发送干扰消除请求, 以使得所述微小 区节点根据所述干扰取消请求进行干扰消除; 其中, 所述干扰消除请求中 包含用户设备 UE 的上行配置信息、 UE 的上行扰码信息和用于确定 UE 上行专用物理控制信道 DPCCH的位置信息。
本申请另一实施例还提供一种上行干扰管理方法, 如图 4所示, 该方 法可以包括:
301、 微小区节点向所述宏小区节点发送支持干扰消除的能力信息。 其中,微小区节点可以将其支持或不支持干扰消除的能力信息报告给 宏小区节点, 这样, 如果微小区节点不具备干扰消除的能力, 宏小区节点 就不用执行确定对微小区造成上行干扰的 UE或者发送干扰消除请求等干 扰管理操作了。 微小区节点不支持干扰消除的情况可以为: 微小区节点由 于设备性能不同, 可能不具备从接收到的上行信号中消除宏小区 UE的上 行信号的能力,或者由于已经在执行的干扰取消操作导致微小区节点干扰 取消超负荷等。
302、 宏小区节点确定微小区节点是否支持干扰消除。
其中, 步骤 301和 302是可选步骤, 可以根据实际需要和功耗要求选 择是否执行该步骤, 进一步可选的, 步骤 301 和 302也可以在步骤 303 之后执行。 宏小区节点在所述微小区节点支持干扰消除的情况下, 执行后 续干扰管理操作, 例如, 向所述微小区节点发送干扰消除请求。 若微小区 节点不支持干扰消除 ,则可以不再继续执行后续干扰管理操作 ,减少功耗。
进一步的, 宏小区节点可以主动发起干扰管理流程, 也可以由微小区 节点来触发干扰管理流程, 具体步骤如下:
303、微小区节点向所述宏小区节点发送干扰管理请求和 /或周期干扰 管理请求。
其中,触发宏小区节点执行向微小区节点发送干扰消除请求的条件可 以为: 宏小区节点接收到微小区节点发送的干扰管理请求和 /或周期干扰 管理请求, 也可以为宏小区节点确定宏小区 UE对微小区造成上行干扰。
具体的, 所述干扰管理请求可以是显示指示, 要求宏小区节点发起干 扰管理流程。 或者, 所述干扰管理请求也可以使隐式指示, 例如微小区受 到的上行干扰程度。 当微小区受到的上行干扰程度超过预定义的门限时, 微小区节点可以向宏小区节点发送干扰管理请求, 以便消除宏小区 UE造 成的上行干扰。 所述微小区受到的上行干扰程度, 可以由宏小区 UE造成 的上行干扰决定, 也可以由微小区受到的所有 UE造成的上行干扰决定。 或者, 所述干扰管理请求还可以是周期管理请求, 周期性的向宏小区节点 发起干扰管理请求, 以便降低微小区的上行干扰。
或者, 也可以不执行步骤 303 , 当宏小区节点确定宏小区 UE对微小 区造成上行干扰时, 触发干扰管理流程。 例如, UE可以定位 UE位置, 当 UE进入微小区上行覆盖范围时, 向宏小区上报对微小区造成上行干扰 的指示, 这样宏小区节点即可确定宏小区 UE对微小区造成上行干扰, 发 起干扰管理流程。
进一步的, 由于微小区节点对全部宏小区 UE都进行检测和消除的工 作负荷较大, 为了减轻微小区节点的工作负荷, 可以缩小微小区节点需检 测的宏小区 UE的范围。 因此, 所述干扰消除请求对应的 UE也可以为所 述宏小区节点确定的对微小区造成上行干扰的 UE。
304、 宏小区节点确定对微小区造成上行干扰的 UE。
其中, 宏小区节点可以根据 UE上报的位置信息或 UE上报的对微小 区造成上行干扰的指示, 确定对微小区造成上行干扰的 UE。 例如, 当 UE 检测到相邻微小区的信号质量高于一定门限时,可以向宏小区上报对微小 区造成上行干扰的指示。
305、宏小区节点根据确定结果向所述微小区节点发送干扰消除请求。 在本实施例中, 步骤 304是可选步骤, 若不执行步骤 304则步骤 305 可以替换为: 宏小区节点向所述微小区节点发送干扰消除请求。 这样, 干 扰消除请求中可以包含对微小区造成干扰和没有造成干扰的宏小区 UE对 应的信息, 包括: UE 的上行配置信息、 UE 的上行扰码信息和用于确定 UE上行 DPCCH的位置信息。
其中, 通过步骤 304可以确定对微小区造成上行干扰的宏小区 UE, 则在步骤 305 中干扰消除请求中可以不用包精确的对微小区造成干扰的 宏小区 UE的相关信息, 而仅包含对微小区造成上行干扰的 UE对应的信 息。 其中, 所述干扰消除请求中可以包含所述对微小区造成上行干扰的 UE的上行配置信息、 所述对微小区造成上行干扰的 UE的上行扰码信息 和用于确定所述对微小区造成上行干扰的 UE上行 DPCCH的位置信息。
306、根据所述干扰消除请求中包含的上行配置信息、 UE的上行扰码 信息和用于确定 UE上行 DPCCH的位置信息, 检测所述干扰消除请求对 应的 UE的上行信号。
其中,所述用于确定 UE上行 DPCCH的位置信息包括以下至少一种: UE的上行 DPCCH与微小区的公共导频信道的定时差、 UE的下行 DPCCH 与微小区的公共导频信道的定时差。 其中, 所述上行配置信息包括以下至 少一种:上行 DPCCH的时隙格式信息、增强专用物理控制信道 E-DPCCH 的配置信息、 不连续发送配置信息。 此外, 干扰消除消息中还可包含其他 的可选的配置信息,配置信息的可选参数以及各参数的具体含义可以参考 表 1。
Continuous Packet Connectivity DTX 上行不连续发送的配置信息
Information
UL DPCH Information 上行专用物理红纸信道配置信息
>UL Scrambling Code 上行扰码
>Min UL Channelisation Code Length 最小上行信道化码长度
>Max Number of UL DPDCHs 最大的上行 DPDCH的信道数
>Puncture Limit 打孔限制
>TFCS 传输格式組集合
>UL DPCCH Slot Format 上行 DPCCH时隙格式
>UL SIR Target 上行目标信噪比
>Diversity Mode 分集模式
>DPC Mode DPC模式
>UL DPDCH Indicator For E-DCH Operation 用于 E-DCH操作的上行 DPDCH 旨示
> UARFCN 频点信息
>Frequency Band Indicator 频带指示信息
RL Information 不连续发送配置信息
>RL ID 无线链路标识
>First RLS Indicator 第一条无线链路集合指示
>Frame Offset 下行 DPCCH和微小区公共导频帧的偏移
>Chip Offset 帧内偏移
>Propagation Delay 传播时延
>E-DCH RL Indication 增强 DCH的链路指示
E-DPCH Information 增强专用物理控制信道配置信息
>Maximum Set of E-DPDCHs 最多 E-DPCCH的最大集合
>Puncture Limit 打孔限制 >E-TFCS Information 增强的传输格式組合集合信息
>E-TTI 增强专用物理信道的发送时间间隔
>E-DPCCH Power Offset E-DPCCH的功率偏置
>E-RGCH 2-Index-Step Threshold 用于确定服务授权的索引步长 E-RGCH
2-Index-Step
>E-RGCH 3 -Index-Step Threshold 用于确定服务授权的索引步长 E-RGCH
3-Index-Step
>HARQ Info for E-DCH E-DCH的 HARQ发送的冗余版本信息
>HS-DSCH Configured Indicator 高速下行共享的信道的配置指示
>E-RNTI 在 E-AGCH上使用的 CRC标识
>Minimum Reduced E-DPDCH Gain Factor 最小的增益因子
Additional E-DCH FDD Information 增加的 E-DCH配置信息
>UL Scrambling Code 上行扰码
>E-DCH Additional RL ID 无线链路标识
>First RLS Indicator 第一条无线链路集合指示
>Propagation Delay 传播时延
>E-RNTI UE的标识
>Extended Propagation Delay UE和基站间的传播时延
表 1
进一步的, 为了减少微小区节点的干扰消除负荷, 可以在检测宏小区
UE 的上行信号之前, 执行以下步骤 307 , 根据受到的上行干扰程度决定 是否进行干扰消除, 从而在受干扰程度较低时降低微小区节点工作负荷, 减小功耗。
307、 微小区节点判断上行干扰程度是否高于预定义门限。 当上行干 扰程度高于预定义门限时, 执行 308; 当上行干扰程度不高于预定义门限 时, 可以不继续执行干扰管理流程, 也可以继续执行步骤 309。
其中, 微小区节点的上行干扰程度高于预定义门限, 可以是所述干扰 消除请求对应的 UE造成的上行干扰程度超过预定义门限, 也可以是全部 宏小区 UE造成的上行干扰程度超过预定义门限, 也可以是所有相邻小区 的 UE造成的上行干扰程度超过预定义门限。
308、 微小区节点在接收到的上行信号中消除所述干扰消除请求对应 的 UE的上行信号。
进一步可选的, 本实施例的方法还可以包括以下步骤 309和 310 , 小区节点将接收到干扰取消请求后的处理情况报告给宏小区节点,使得宏 小区节点在获知干扰取消请求的处理情况后确定后续操作,避免宏小区节 点重复发送等问题。 309、 微小区节点向所述宏小区节点发送干扰消除响应。
其中, 干扰消除响应可以是指示已经收到干扰消除请求, 指示干扰消 除操作正在进行, 指示干扰消除已完成, 指示没有检测到干扰消除请求对 应的 UE, 指示不支持干扰消除, 或者指示干扰消除已经超负荷等。 因此, 步骤 309也可以在步骤 305中接收到宏小区节点发送的干扰消除请求后执 行, 也可以在 306、 307或 308完成之后或在其处理过程中, 本发明实施 例对此不做限定。
310、 宏小区节点根据所述干扰消除响应执行进一步降干扰的操作。 其中, 若所述干扰消除响应指示干扰消除请求已被接收, 则宏小区节 点可以不再重复发送干扰消除请求。若干扰消除响应指示微小区节点不具 备干扰消除的能力、 没有检测到干扰消除请求对应的 UE或干扰消除已经 超负荷, 则宏小区节点可以继续执行进一步降干扰的操作。 例如, 将对微 小区造成上行干扰的 UE 切换到其他频点, 或者通过时分调度将宏小区 UE和微小区 UE所占用的时分资源隔离, 或者降低宏小区 UE的上行发 射功率等。
需要说明的是, 本申请的实施例可以应用于各种 Hetnet 架构中, 包 括宏小区节点与微小区节点属于同一控制节点的场景,也包括两者不属于 同一控制节点的场景。 例如, 微小区节点所属的控制节点为基站网关, 而 宏小区节点所属的控制节点为宏小区无线网络控制器的场景。宏小区节点 和微小区节点之间的消息和请求可以通过基站网关、 RNC 等中间设备进 行转发, 类似的, 本申请实施例还可以应用于其他 Hetnet 架构中, 本实 施例这里不再 举例。
本申请实施例提供的上行干扰管理方法,由宏小区节点向微小区节点 发送干扰消除请求,使得微小区节点在接收到宏小区节点发送的干扰消除 请求后, 可以根据干扰消除请求中包含的信息消除对应宏小区 UE的上行 信号, 与现有技术相比, 在宏小区 UE进入微小区的上行覆盖区域时, 可 以消除宏小区 UE对微小区造成的上行干扰,从而提高微小区的上行容量。 并且, 宏小区节点在发送干扰消除请求之前, 先确定对微小区造成上 行干扰的 UE, 缩小需要进行干扰消除的 UE范围, 不仅减少了干扰消除 请求包含的信息量, 也减轻了微小区节点的干扰消除负荷。 本申请另一实施例还提供一种微小区节点, 如图 5所示, 包括: 接收 单元 41、 消除单元 42。
接收单元 41 , 用于接收宏小区节点发送的干扰消除请求, 其中所述 干扰消除请求中包含用户设备 UE的上行配置信息、 UE的上行扰码信息 和用于确定 UE上行专用物理控制信道 DPCCH的位置信息。
消除单元 42 , 用于根据所述接收单元 41接收的干扰取消请求进行干 扰消除。
进一步的, 所述消除单元 42包括: 检测模块 421、 消除模块 422。 检测模块 421 , 用于根据所述干扰消除请求中包含的上行配置信息、 UE的上行扰码信息和用于确定 UE上行 DPCCH的位置信息, 检测所述 干扰消除请求对应的 UE的上行信号。
消除模块 422 , 用于在接收到的上行信号中消除所述干扰消除请求对 应的 UE的上行信号。
其中, 所述上行配置信息包括以下至少一种: 上行 DPCCH的时隙格 式信息、 增强专用物理控制信道 E-DPCCH的配置信息、 不连续发送配置 信息。 所述用于确定 UE上行 DPCCH的位置信息包括以下至少一种: UE 的上行 DPCCH 与微小区的公共导频信道的定时差、 UE 的下行 DPCCH 与微小区的公共导频信道的定时差。
进一步的, 所述 UE为所述宏小区节点确定的对微小区造成上行干扰 的 UE。
进一步的, 所述 小区节点还可以包括: 请求单元 43。
请求单元 43 , 用于在所述接收单元 41接收宏小区节点发送的干扰消 除请求之前, 向所述宏小区节点发送干扰管理请求和 /或周期干扰管理请 求。
其中,所述宏小区节点在以下任一种条件下触发发送所述干扰消除请 求: 所述宏小区节点接收到所述微小区节点发送的干扰管理请求; 所述宏 小区节点接收到所述微小区节点发送的周期干扰管理请求;所述宏小区节 点确定所述 UE对微小区造成上行干扰。
进一步的, 所述消除单元 42还可以包括: 判定模块 423。
判定模块 423 , 用于在所述检测模块 421检测所述干扰消除请求对应 的 UE的上行信号之后, 当上行干扰程度高于预定义门限时, 触发所述消 除模块 422执行所述在接收到的上行信号中取消所述 UE的上行信号。
进一步的, 所述 小区节点还可以包括: 响应单元 44。
响应单元 44 , 用于在所述接收单元 41接收宏小区节点发送的干扰消 除请求之后, 向所述宏小区节点发送干扰消除响应, 以便所述宏小区节点 根据所述干扰;肖除响应执行进一步降干扰的操作。
进一步的, 所述微小区节点还可以包括: 能力单元 45。
能力单元 45 , 用于在所述接收单元 41接收宏小区节点发送的干扰消 除请求之前, 向所述宏小区节点发送支持干扰消除的能力信息, 以便所述 宏小区节点在所述微小区节点支持干扰消除的情况下向所述微小区节点 发送干扰消除请求。
本申请另一实施例还提供一种宏小区节点, 如图 6所示, 包括: 发送 单元 51。
发送单元 51 , 用于向微小区节点发送干扰消除请求, 以使得所述微 小区节点根据所述干扰取消请求进行干扰消除。
其中, 所述干扰消除请求中包含用户设备 UE 的上行配置信息、 UE 的上行扰码信息和用于确定 UE上行专用物理控制信道 DPCCH的位置信 息。
进一步的, 所述发送单元 51 包括: 确定模块 511、 发送模块 512。 确定模块 511 , 用于确定对微小区造成上行干扰的 UE。 发送模块 512 , 用于根据所述确定模块 511得到的确定结果向所述微 小区节点发送干扰消除请求,所述干扰消除请求中包含所述对微小区造成 上行干扰的 UE的上行配置信息、 所述对微小区造成上行干扰的 UE的上 行扰码信息和用于确定所述对微小区造成上行干扰的 UE上行 DPCCH的 位置信息。
其中, 所述上行配置信息包括以下至少一种: 上行 DPCCH的时隙格 式信息、 增强专用物理控制信道 E-DPCCH的配置信息、 不连续发送配置 信息。 所述用于确定 UE上行 DPCCH的位置信息包括以下至少一种: UE 的上行 DPCCH 与微小区的公共导频信道的定时差、 UE 的下行 DPCCH 与微小区的公共导频信道的定时差。
进一步的, 所述宏小区节点还可以包括: 触发单元 52。
触发单元 52 , 用于在以下任一条件下触发所述发送单元 51执行发送 所述干扰取消请求: 接收到所述微小区节点发送的干扰管理请求; 或, 接 收到所述微小区节点发送的周期干扰管理请求; 或确定 UE对微小区造成 上行干扰。
进一步的, 所述宏小区节点还包括: 接收单元 53、 降扰单元 54。 接收单元 53 , 用于在所述发送单元 51向微小区节点发送干扰取消请 求之后, 接收所述微小区节点发送的干扰取消响应。
降扰单元 54 , 用于根据所述接收单元 53接收的干扰取消响应执行进 一步降干扰的操作。
进一步的, 所述宏小区节点还包括: 能力单元 55。
能力单元 55 , 用于在所述发送单元 51向微小区节点发送干扰消除请 求之前, 接收所述微小区节点发送的支持干扰取消的能力信息。
所述发送单元 51 , 还用于在所述微小区节点支持干扰取消的情况下, 执行所述向微小区节点发送干扰消除请求。
本申请另一实施例还提供一种上行干扰管理系统,可以参考图 4所示 的架构, 该系统可以包括: 宏小区节点和微小区节点。 其中, 所述宏小区节点, 用于向微小区节点发送干扰消除请求, 以使 得所述微小区节点根据所述干扰取消请求进行干扰消除; 其中, 所述干扰 消除请求中包含用户设备 UE的上行配置信息、 UE的上行扰码信息和用 于确定 UE上行专用物理控制信道 DPCCH的位置信息。
所述微小区节点, 用于接收宏小区节点发送的干扰消除请求, 其中所 述干扰消除请求中包含用户设备 UE的上行配置信息、 UE的上行扰码信 息和用于确定 UE上行专用物理控制信道 DPCCH的位置信息; 根据所述 干扰消除请求进行干扰消除。
本申请的实施例提供的微小区节点、宏小区节点以及上行干扰管理系 统, 由宏小区节点向微小区节点发送干扰消除请求, 使得微小区节点在接 收到宏小区节点发送的干扰消除请求后,根据干扰消除请求中包含的信息 消除对应宏小区 UE的上行信号, 与现有技术相比, 在宏小区 UE进入 小区的上行覆盖区域时, 可以消除宏小区 UE对微小区造成的上行干扰, 从而提高微小区的上行容量。
本申请另一实施例还提供一种微小区节点, 如图 7所示, 包括: 接收 器 61、 处理器 62。
接收器 61 , 用于接收宏小区节点发送的干扰消除请求, 其中所述干 扰消除请求中包含用户设备 UE的上行配置信息、 UE的上行扰码信息和 用于确定 UE上行专用物理控制信道 DPCCH的位置信息。
处理器 62, 用于根据所述干扰取消请求进行干扰消除。
进一步的, 所述处理器 62还用于: 根据所述干扰消除请求中包含的 上行配置信息、 UE的上行扰码信息和用于确定 UE上行 DPCCH的位置 信息, 检测所述干扰消除请求对应的 UE的上行信号; 在接收到的上行信 号中消除所述干扰消除请求对应的 UE的上行信号。
进一步的, 所述 UE为所述宏小区节点确定的对微小区造成上行干扰 的 UE。
其中, 所述上行配置信息包括以下至少一种: 上行 DPCCH的时隙格 式信息、 增强专用物理控制信道 E-DPCCH的配置信息、 不连续发送配置 信息。 所述用于确定 UE上行 DPCCH的位置信息包括以下至少一种: UE 的上行 DPCCH 与微小区的公共导频信道的定时差、 UE 的下行 DPCCH 与微小区的公共导频信道的定时差。
进一步的, 该微小区节点还包括: 发射器 63。
发射器 63 , 用于在所述接收器 61接收宏小区节点发送的干扰消除请 求之前, 向所述宏小区节点发送干扰管理请求和 /或周期干扰管理请求。
其中,所述宏小区节点在以下任一种条件下触发发送所述干扰消除请 求: 所述宏小区节点接收到所述微小区节点发送的干扰管理请求; 所述宏 小区节点接收到所述微小区节点发送的周期干扰管理请求;所述宏小区节 点确定所述 UE对微小区造成上行干扰。
进一步的, 所述接收器 61还用于: 在所述处理器 62检测所述干扰消 除请求对应的 UE的上行信号之后, 当上行干扰程度高于预定义门限时, 执行所述在接收到的上行信号中取消所述 UE的上行信号。
进一步的, 所述发射器 63还用于: 在所述接收器 61接收宏小区节点 发送的干扰消除请求之后, 向所述宏小区节点发送干扰消除响应, 以便所 述宏小区节点根据所述干扰消除响应执行进一步降干扰的操作。
进一步的, 所述发射器 63还用于: 在所述接收器 61接收宏小区节点 发送的干扰消除请求之前,向所述宏小区节点发送支持干扰消除的能力信 息,以便所述宏小区节点在所述微小区节点支持干扰消除的情况下向所述 微小区节点发送干扰消除请求。
本申请另一实施例还提供一种宏小区节点, 如图 8所示, 包括: 发射 器 71。
发射器 71 , 用于向微小区节点发送干扰消除请求, 以使得所述微小 区节点根据所述干扰取消请求进行干扰消除。
其中, 所述干扰消除请求中包含用户设备 UE 的上行配置信息、 UE 的上行扰码信息和用于确定 UE上行专用物理控制信道 DPCCH的位置信 息。
进一步的,所述发射器 71还用于:确定对微小区造成上行干扰的 UE; 根据确定结果向所述微小区节点发送干扰消除请求; 其中, 所述干扰消除 请求中包含所述对微小区造成上行干扰的 UE的上行配置信息、 所述对微 小区造成上行干扰的 UE的上行扰码信息和用于确定所述对微小区造成上 行干扰的 UE上行 DPCCH的位置信息。
进一步的, 所述上行配置信息包括以下至少一种: 上行 DPCCH的时 隙格式信息、 增强专用物理控制信道 E-DPCCH的配置信息、 不连续发送 配置信息。所述用于确定 UE上行 DPCCH的位置信息包括以下至少一种: UE的上行 DPCCH与微小区的公共导频信道的定时差、 UE的下行 DPCCH 与微小区的公共导频信道的定时差。
进一步的, 所述发射器 71 , 在以下任一条件下触发所述发射器 71执 行发送所述干扰取消请求: 接收到所述微小区节点发送的干扰管理请求; 或, 接收到所述微小区节点发送的周期干扰管理请求; 或确定 UE对微小 区造成上行干扰。
进一步的, 该宏小区节点还包括: 接收器 72、 处理器 73。
接收器 72, 用于在所述发射器 71向微小区节点发送干扰取消请求之 后, 接收所述微小区节点发送的干扰取消响应。
处理器 73 , 用于根据所述接收器 72接收的干扰取消响应执行进一步 降干扰的操作。
进一步的, 所述接收器 72还用于: 在所述发射器 71向微小区节点发 送干扰消除请求之前,接收所述微小区节点发送的支持干扰取消的能力信 息;
所述发射器 71 , 还用于在所述微小区节点支持干扰取消的情况下, 执行所述向微小区节点发送干扰消除请求。
本申请实施例提供的微小区节点和宏小区节点,由宏小区节点向微小 区节点发送干扰消除请求,使得微小区节点在接收到宏小区节点发送的干 扰消除请求后, 根据干扰消除请求中包含的信息消除对应宏小区 UE的上 行信号, 与现有技术相比, 在宏小区 UE进入微小区的上行覆盖区域时, 可以消除宏小区 UE对微小区造成的上行干扰, 从而提高微小区的上行容 量。
所属领域的技术人员可以清楚地了解到, 为描述的方便和简洁, 仅以 上述各功能模块的划分进行举例说明, 实际应用中, 可以根据需要而将上 述功能分配由不同的功能模块完成,即将装置的内部结构划分成不同的功 能模块, 以完成以上描述的全部或者部分功能。 上述描述的系统, 装置和 单元的具体工作过程, 可以参考前述方法实施例中的对应过程, 在此不再 贅述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统, 装置 和方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅 是示意性的, 例如, 所述模块或单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可 以集成到另一个系统, 或一些特征可以忽略, 或不执行。 另一点, 所显示 或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装 置或单元的间接耦合或通信连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的, 作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地 方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的 部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元 中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在 一个单元中。 上述集成的单元既可以采用硬件的形式实现, 也可以采用软 件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品 销售或使用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理 解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技 术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品 存储在一个存储介质中, 包括若干指令用以使得一台计算机设备(可以是 个人计算机, 服务器, 或者网络设备等) 或处理器(processor )执行本申 请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括: U盘、 移动硬盘、 只读存储器 (ROM , Read-Only Memory ) , 随机存取存储器 ( RAM , Random Access Memory )、 磁碟或者光盘等各种可以存储程序代 码的介质。
以上所述, 以上实施例仅用以说明本申请的技术方案, 而非对其限制; 尽 管参照前述实施例对本申请进行了详细的说明,本领域的普通技术人员应 当理解: 其依然可以对前述各实施例所记载的技术方案进行修改, 或者对 其中部分技术特征进行等同替换; 而这些修改或者替换, 并不使相应技术 方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims

权 利 要 求 书
1、 一种上行干扰管理方法, 其特征在于, 包括:
微小区节点接收宏小区节点发送的干扰消除请求, 其中所述干扰消除 请求中包含用户设备 UE的上行配置信息、 UE的上行扰码信息和用于确定 UE上行专用物理控制信道 DPCCH的位置信息;
根据所述干扰消除请求进行干扰消除。
2、 根据权利要求 1所述的方法, 其特征在于, 所述根据所述干扰消除 请求进行干扰消除, 包括:
根据所述干扰消除请求中包含的上行配置信息、 UE的上行扰码信息和 用于确定 UE上行 DPCCH的位置信息, 检测所述干扰消除请求对应的 UE 的上行信号;
在接收到的上行信号中消除所述干扰消除请求对应的 UE的上行信号。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 所述 UE为所述宏 小区节点确定的对微小区造成上行干扰的 U E。
4、 根据权利要求 1-3中任一项所述的方法, 其特征在于, 所述上行配 置信息包括以下至少一种: 上行 DPCCH 的时隙格式信息、 增强专用物理 控制信道 E-DPCCH的配置信息、 不连续发送配置信息;
所述用于确定 UE上行 DPCCH的位置信息包括以下至少一种: UE的 上行 DPCCH与微小区的公共导频信道的定时差、 UE的下行 DPCCH与微 小区的公共导频信道的定时差。
5、 根据权利要求 1-4中任一项所述的方法, 其特征在于, 在接收宏小 区节点发送的干扰消除请求之前, 所述方法还包括:
向所述宏小区节点发送干扰管理请求和 /或周期干扰管理请求; 其中, 所述宏小区节点在以下任一种条件下触发发送所述干扰消除请 求: 所述宏小区节点接收到所述微小区节点发送的干扰管理请求; 所述宏 小区节点接收到所述微小区节点发送的周期干扰管理请求; 所述宏小区节 点确定所述 UE对微小区造成上行干扰。
6、 根据权利要求 1-5中任一项所述的方法, 其特征在于, 在检测所述 干扰消除请求对应的 UE的上行信号之后, 所述方法还包括:
当上行干扰程度高于预定义门限时, 执行所述在接收到的上行信号中 取消所述 UE的上行信号。
7、 根据权利要求 1-6中任一项所述的方法, 其特征在于, 在接收宏小 区节点发送的干扰消除请求之后, 所述方法还包括:
向所述宏小区节点发送干扰消除响应, 以便所述宏小区节点根据所述 干扰消除响应执行进一步降干扰的操作。
8、 根据权利要求 1-7中任一项所述的方法, 其特征在于, 在接收宏小 区节点发送的干扰消除请求之前, 所述方法还包括:
向所述宏小区节点发送支持干扰消除的能力信息。
9、 一种上行干扰管理方法, 其特征在于, 包括:
宏小区节点向微小区节点发送干扰消除请求, 以使得所述微小区节点 根据所述干扰取消请求进行干扰消除;
其中, 所述干扰消除请求中包含用户设备 UE的上行配置信息、 UE的 上行扰码信息和用于确定 UE上行专用物理控制信道 DPCCH的位置信息。
10、 根据权利要求 9所述的方法, 其特征在于, 所述向微小区节点发 送干扰消除请求, 包括:
确定对微小区造成上行干扰的 UE;
根据确定结果向所述微小区节点发送干扰消除请求, 所述干扰消除请 求中包含所述对微小区造成上行干扰的 UE 的上行配置信息、 所述对微小 区造成上行干扰的 UE 的上行扰码信息和用于确定所述对微小区造成上行 干扰的 UE上行 DPCCH的位置信息。
11、 根据权利要求 9或 10所述的方法, 其特征在于, 所述上行配置信 息包括以下至少一种: 上行 DPCCH 的时隙格式信息、 增强专用物理控制 信道 E-DPCCH的配置信息、 不连续发送配置信息;
所述用于确定 UE上行 DPCCH的位置信息包括以下至少一种: UE的 上行 DPCCH与微小区的公共导频信道的定时差、 UE的下行 DPCCH与微 小区的公共导频信道的定时差。
12、 根据权利要求 9-11 中任一项所述的方法, 其特征在于, 在以下任 一种情况下触发发送所述干扰消除请求:
接收到所述微小区节点发送的干扰管理请求;
或, 接收到所述微小区节点发送的周期干扰管理请求;
或, 确定 UE对微小区造成上行干扰。
13、 根据权利要求 9-10中任一项所述的方法, 其特征在于, 在向微小 区节点发送干扰取消请求之后, 所述方法还包括:
接收所述微小区节点发送的干扰取消响应;
根据所述干扰取消响应执行进一步降干扰的操作。
14、 根据权利要求 9-13中任一项所述的方法, 其特征在于, 在向微小 区节点发送干扰消除请求之前, 所述方法还包括:
接收所述微小区节点发送的支持干扰取消的能力信息。
15、 一种微小区节点, 其特征在于, 包括:
接收单元, 用于接收宏小区节点发送的干扰消除请求, 其中所述干扰 消除请求中包含用户设备 UE的上行配置信息、 UE的上行扰码信息和用于 确定 UE上行专用物理控制信道 DPCCH的位置信息;
消除单元, 用于根据所述干扰取消请求进行干扰消除。
16、 根据权利要求 15所述的微小区节点, 其特征在于, 所述消除单元 包括:
检测模块, 用于根据所述干扰消除请求中包含的上行配置信息、 UE的 上行扰码信息和用于确定 UE上行 DPCCH的位置信息,检测所述干扰消除 请求对应的 UE的上行信号;
消除模块, 用于在接收到的上行信号中消除所述干扰消除请求对应的 UE的上行信号。
17、 根据权利要求 15或 16所述的微小区节点, 其特征在于, 所述 UE 为所述宏小区节点确定的对微小区造成上行干扰的 UE。
18、 根据权利要求 15-17 中任一项所述的微小区节点, 其特征在于, 所述上行配置信息包括以下至少一种: 上行 DPCCH 的时隙格式信息、 增 强专用物理控制信道 e-DPCCH的配置信息、 不连续发送配置信息;
所述用于确定 UE上行 DPCCH的位置信息包括以下至少一种: UE的 上行 DPCCH与微小区的公共导频信道的定时差、 UE的下行 DPCCH与微 小区的公共导频信道的定时差。
19、 根据权利要求 15-18 中任一项所述的微小区节点, 其特征在于, 还包括:
请求单元, 用于在所述接收单元接收宏小区节点发送的干扰消除请求 之前, 向所述宏小区节点发送干扰管理请求和 /或周期干扰管理请求; 其中, 所述宏小区节点在以下任一种条件下触发发送所述干扰消除请 求: 所述宏小区节点接收到所述微小区节点发送的干扰管理请求; 所述宏 小区节点接收到所述微小区节点发送的周期干扰管理请求; 所述宏小区节 点确定所述 UE对微小区造成上行干扰。
20、 根据权利要求 15-19 中任一项所述的微小区节点, 其特征在于, 还包括:
判定模块, 用于在所述检测模块检测所述干扰消除请求对应的 UE 的 上行信号之后, 当上行干扰程度高于预定义门限时, 执行所述在接收到的 上行信号中取消所述 UE的上行信号。
21、 根据权利要求 15-20 中任一项所述的微小区节点, 其特征在于, 还包括:
响应单元, 用于在所述接收单元接收宏小区节点发送的干扰消除请求 之后, 向所述宏小区节点发送干扰消除响应, 以便所述宏小区节点根据所 述干扰消除响应执行进一步降干扰的操作。
22、 根据权利要求 15-21 中任一项所述的微小区节点, 其特征在于, 还包括: 能力单元, 用于在所述接收单元接收宏小区节点发送的干扰消除请求 之前, 向所述宏小区节点发送支持干扰消除的能力信息。
23、 一种宏小区节点, 其特征在于, 包括:
发送单元, 用于向微小区节点发送干扰消除请求, 以使得所述微小区 节点根据所述干扰取消请求进行干扰消除;
其中, 所述干扰消除请求中包含用户设备 UE的上行配置信息、 UE的 上行扰码信息和用于确定 UE上行专用物理控制信道 DPCCH的位置信息。
24、 根据权利要求 23所述的宏小区节点, 其特征在于, 所述发送单元 包括:
确定模块, 用于确定对微小区造成上行干扰的 UE;
发送模块, 用于根据所述确定模块得到的确定结果向所述微小区节点 发送干扰消除请求, 所述干扰消除请求中包含所述对微小区造成上行干扰 的 UE的上行配置信息、所述对微小区造成上行干扰的 UE的上行扰码信息 和用于确定所述对微小区造成上行干扰的 UE上行 DPCCH的位置信息。
25、 根据权利要求 23或 24所述的宏小区节点, 其特征在于, 所述上 行配置信息包括以下至少一种: 上行 DPCCH 的时隙格式信息、 增强专用 物理控制信道 E-DPCCH的配置信息、 不连续发送配置信息;
所述用于确定 UE上行 DPCCH的位置信息包括以下至少一种: UE的 上行 DPCCH与微小区的公共导频信道的定时差、 UE的下行 DPCCH与微 小区的公共导频信道的定时差。
26、 根据权利要求 23-25 中任一项所述的宏小区节点, 其特征在于, 还包括:
触发单元, 用于在以下任一条件下触发所述发送单元执行发送所述干 扰取消请求: 接收到所述微小区节点发送的干扰管理请求; 或, 接收到所 述微小区节点发送的周期干扰管理请求; 或确定 UE对微小区造成上行干 扰。
27、 根据权利要求 23-26 中任一项所述的宏小区节点, 其特征在于, 还包括:
接收单元,用于在所述发送单元向微小区节点发送干扰取消请求之后, 接收所述微小区节点发送的干扰取消响应;
降扰单元, 用于根据所述接收单元接收的干扰取消响应执行进一步降 干扰的操作。
28、 根据权利要求 23-27 中任一项所述的宏小区节点, 其特征在于, 还包括:
能力单元,用于在所述发送单元向微小区节点发送干扰消除请求之前, 接收所述微小区节点发送的支持干扰取消的能力信息;
所述发送单元, 还用于在所述微小区节点支持干扰取消的情况下, 执 行所述向微小区节点发送干扰消除请求。
29、 一种上行干扰管理系统, 其特征在于, 包括:
如权利要求 15-22中任一项所述的 小区节点; 和
如权利要求 23-28中任一项所述的宏小区节点。
30、 一种微小区节点, 其特征在于, 包括:
接收器, 用于接收宏小区节点发送的干扰消除请求, 其中所述干扰消 除请求中包含用户设备 UE的上行配置信息、 UE的上行扰码信息和用于确 定 UE上行专用物理控制信道 DPCCH的位置信息;
处理器, 用于根据所述干扰取消请求进行干扰消除。
31、 根据权利要求 30所述的微小区节点, 其特征在于, 所述处理器还 用于: 根据所述干扰消除请求中包含的上行配置信息、 UE的上行扰码信息 和用于确定 UE上行 DPCCH的位置信息, 检测所述干扰消除请求对应的 UE的上行信号; 在接收到的上行信号中消除所述干扰消除请求对应的 UE 的上行信号。
32、 根据权利要求 30或 31所述的微小区节点, 其特征在于, 所述 UE 为所述宏小区节点确定的对微小区造成上行干扰的 UE。
33、 根据权利要求 30-32 中任一项所述的微小区节点, 其特征在于, 所述上行配置信息包括以下至少一种: 上行 DPCCH 的时隙格式信息、 增 强专用物理控制信道 E-DPCCH的配置信息、 不连续发送配置信息;
所述用于确定 UE上行 DPCCH的位置信息包括以下至少一种: UE的 上行 DPCCH与微小区的公共导频信道的定时差、 UE的下行 DPCCH与微 小区的公共导频信道的定时差。
34、 根据权利要求 30-33 中任一项所述的微小区节点, 其特征在于, 还包括:
发射器,用于在所述接收器接收宏小区节点发送的干扰消除请求之前, 向所述宏小区节点发送干扰管理请求和 /或周期干扰管理请求;
其中, 所述宏小区节点在以下任一种条件下触发发送所述干扰消除请 求: 所述宏小区节点接收到所述微小区节点发送的干扰管理请求; 所述宏 小区节点接收到所述微小区节点发送的周期干扰管理请求; 所述宏小区节 点确定所述 UE对微小区造成上行干扰。
35、 根据权利要求 30-34 中任一项所述的微小区节点, 其特征在于, 所述接收器还用于: 在所述处理器检测所述干扰消除请求对应的 UE 的上 行信号之后, 当上行干扰程度高于预定义门限时, 执行所述在接收到的上 行信号中取消所述 UE的上行信号。
36、 根据权利要求 30-35 中任一项所述的微小区节点, 其特征在于, 所述发射器还用于: 在所述接收器接收宏小区节点发送的干扰消除请求之 后, 向所述宏小区节点发送干扰消除响应, 以便所述宏小区节点根据所述 干扰消除响应执行进一步降干扰的操作。
37、 根据权利要求 30-36 中任一项所述的微小区节点, 其特征在于, 所述发射器还用于: 在所述接收器接收宏小区节点发送的干扰消除请求之 前, 向所述宏小区节点发送支持干扰消除的能力信息。
38、 一种宏小区节点, 其特征在于, 包括:
发射器, 用于向微小区节点发送干扰消除请求, 以使得所述微小区节 点根据所述干扰取消请求进行干扰消除; 其中, 所述干扰消除请求中包含用户设备 UE的上行配置信息、 UE的 上行扰码信息和用于确定 UE上行专用物理控制信道 DPCCH的位置信息。
39、 根据权利要求 38所述的宏小区节点, 其特征在于, 所述发射器还 用于: 确定对微小区造成上行干扰的 UE; 根据确定结果向所述微小区节点 发送干扰消除请求; 其中, 所述干扰消除请求中包含所述对微小区造成上 行干扰的 UE的上行配置信息、所述对微小区造成上行干扰的 UE的上行扰 码信息和用于确定所述对微小区造成上行干扰的 UE上行 DPCCH的位置信 息。
40、 根据权利要求 38或 39所述的宏小区节点, 其特征在于, 所述上 行配置信息包括以下至少一种: 上行 DPCCH 的时隙格式信息、 增强专用 物理控制信道 E-DPCCH的配置信息、 不连续发送配置信息;
所述用于确定 UE上行 DPCCH的位置信息包括以下至少一种: UE的 上行 DPCCH与微小区的公共导频信道的定时差、 UE的下行 DPCCH与微 小区的公共导频信道的定时差。
41、 根据权利要求 38-40 中任一项所述的宏小区节点, 其特征在于, 所述发射器, 在以下任一条件下触发所述发射器执行发送所述干扰取消请 求: 接收到所述微小区节点发送的干扰管理请求; 或, 接收到所述微小区 节点发送的周期干扰管理请求; 或确定 UE对微小区造成上行干扰。
42、 根据权利要求 38-41 中任一项所述的宏小区节点, 其特征在于, 还包括:
接收器, 用于在所述发射器向微小区节点发送干扰取消请求之后, 接 收所述微小区节点发送的干扰取消响应;
处理器, 用于根据所述接收器接收的干扰取消响应执行进一步降干扰 的操作。
43、 根据权利要求 38-42 中任一项所述的宏小区节点, 其特征在于, 所述接收器还用于: 在所述发射器向微小区节点发送干扰消除请求之前, 接收所述微小区节点发送的支持干扰取消的能力信息; 所述发射器, 还用于在所述微小区节点支持干扰取消的情况下, 执行 所述向微小区节点发送干扰消除请求。
44、 一种上行干扰管理系统, 其特征在于, 包括:
如权利要求 30-37中任一项所述的微小区节点; 和
如权利要求 38-43中任一项所述的宏小区节点。
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