WO2013041051A1 - 微小区基站的自适应功率调整 - Google Patents

微小区基站的自适应功率调整 Download PDF

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Publication number
WO2013041051A1
WO2013041051A1 PCT/CN2012/081791 CN2012081791W WO2013041051A1 WO 2013041051 A1 WO2013041051 A1 WO 2013041051A1 CN 2012081791 W CN2012081791 W CN 2012081791W WO 2013041051 A1 WO2013041051 A1 WO 2013041051A1
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WIPO (PCT)
Prior art keywords
power
base station
micro cell
cell base
message includes
Prior art date
Application number
PCT/CN2012/081791
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English (en)
French (fr)
Inventor
陈东
徐敏
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2013041051A1 publication Critical patent/WO2013041051A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • H04W52/244Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/38TPC being performed in particular situations
    • H04W52/46TPC being performed in particular situations in multi hop networks, e.g. wireless relay networks

Definitions

  • the present invention relates to a wireless communication system, and in particular to adaptive power adjustment of a micro cell base station. Background technique
  • a home base station or a femtocell base station, a microcell base station, a cell, a femto (cell), an AP (Access Point, an access point), is currently the most promising low-cost access technology.
  • the microcell base station has three different access modes: closed mode, mixed mode, and open mode.
  • closed mode only allows the subscriber to access the micro cell;
  • hybrid mode allows all users to access the micro cell, but distinguishes between the signed and non-subscribed users, providing different access levels and service levels;
  • open mode is similar to the macro cell, allowing all users to access In.
  • the micro cell base station Compared with the traditional macro base station, the micro cell base station has the following characteristics: small coverage; limited number of carried users; large number; dense deployment; multi-layer overlapping coverage; user-managed devices, not operators
  • the device of the micro cell base station may be deployed in a different frequency from the macro network, but may also be deployed in the same frequency; the transmit power is small; the neighbor cell list configuration of the micro cell base station is difficult, and the micro cell base station can pass the uplink detection, automatically Configure the neighboring area and complete the selection of the starting frequency and scrambling code.
  • the scenarios of micro-cell base station applications are very wide: homes, enterprises, public places, etc., especially in enterprises and public places, which require multiple micro cells for continuous network deployment.
  • the introduction, its introduction enhances the indoor coverage of these scenarios, and also helps the macro cell to perform service unloading.
  • the macro cell network coverage and the micro cell coverage may overlap, thereby causing co-channel interference problems, including mutual uplink and downlink interference between the macro network and the micro cell.
  • a user equipment user equipment
  • the signal of the micro-cell base station is strong, which may cause interference to the UE, or even cause Dropped words.
  • the micro-area base station in the closed mode only allows the subscriber to access.
  • the unlicensed user is close to the micro-cell, it is interrupted by the same-frequency interference of the micro-cell base station and cannot be switched into the micro-cell.
  • UE1 is a MUE (Macro UE) in the UMTS (Universal Mobile Telecommunications System), that is, a UE whose serving cell is a macro cell, and has no right to access the nearby micro cell base station.
  • the UE2 is a Home UE (Home UE), that is, the serving cell base station is a UE of the micro cell base station, and the UE2 is currently connected to the micro cell 1.
  • the micro cell 1 and the micro cell 2 are continuous coverage scenarios in some homes, businesses, or public places, and other micro cells can be placed around the micro cell 1 and the micro cell 2 to satisfy continuous coverage.
  • the UE1 When the UE1 is close to the micro cell 1, since the UE1 is not able to access the micro cell 1 due to the co-channel interference of the micro cell 1, the UE1 can start the macro radio network controller (RNC, radio network controller) and the micro cell base station 1
  • RNC radio network controller
  • the inter-carrier coordination procedure causes the RNC to instruct the micro cell base station 1 to reduce its transmit power to reduce downlink interference to UE1.
  • RNC radio network controller
  • the micro cell base station reduces the transmission power as needed, and the corresponding micro cell coverage will become smaller, and thus the micro cell cannot be guaranteed to be small. Continuous coverage of the interval, resulting in coverage holes, affecting the original HUE Performance.
  • the microcell base station 1 needs to reduce power due to the proximity of the UE1, but at this time, the continuous coverage of the original microcell base station 1 and the microcell base station 2 changes, and the coverage of the microcell base station 1 becomes a dotted line.
  • UE2 is located in the hole area, which is originally within the coverage of the micro cell base station 1, but the micro cell coverage will be lost at this time.
  • UE2 has to switch to the macro cell, which increases the traffic load of the macro cell, and violates the principle that the signing user accepts the micro cell service at home or in the enterprise; meanwhile, if the signal in the indoor macro cell is weak, The lack of micro-area coverage will cause UE2's dropped calls, which will affect its performance.
  • aspects of the present invention provide a method for adaptive power adjustment for a micro cell base station such as a femto, so that the micro cell base station can dynamically adjust the transmit power according to the surrounding environment in time to ensure coverage continuity between the micro cell base stations, and generate Service offload gain.
  • the embodiment of the present invention provides a power adaptive adjustment method, including: when a first micro cell base station adjusts its own power, the first micro cell base station sends a power message to an adjacent second micro cell base station, to The second micro cell base station is instructed to adjust its own power according to the power message.
  • an embodiment of the present invention provides a micro cell base station, including: a sending unit, configured to: when the micro cell base station adjusts its own power, send a power message to an adjacent micro cell base station to indicate the neighboring The micro-d, zone base station adjusts its own power according to the power message.
  • an embodiment of the present invention provides a micro cell base station, including: a processor, configured to: when the micro cell base station adjusts its own power, send a power message to an adjacent micro cell base station, where Instructing the neighboring micro cell base station to adjust its own power according to the power adjustment information in the power message; and a memory connected to the processor.
  • an embodiment of the present invention provides a power adaptive adjustment method, including: a second micro cell base station receives a power message from a neighboring first micro cell base station, where the power message is when the first micro cell base station The second micro cell base station adjusts its own power according to the power message when adjusting its own power.
  • an embodiment of the present invention provides a micro cell base station, including: a receiving unit, configured to receive a power message from a neighboring micro cell base station, where the power message is when the neighboring micro cell base station adjusts The power is sent to the micro cell base station; the adjusting unit is configured to adjust the power of the micro cell base station according to the power message.
  • an embodiment of the present invention provides a micro cell base station, including: a processor, configured to: receive a power message from a micro cell base station adjacent to the micro cell base station, where the power message is adjacent to a micro cell The base station adjusts its own power and sends it to the micro cell base station; adjusts the power of the micro cell base station according to the power message; and a memory connected to the processor.
  • an embodiment of the present invention provides a power adaptive adjustment method, including: performing a downlink detection by a micro cell base station; when the signal of the neighboring micro cell base station is weakened, the micro cell base station gradually increases its Self-power; The micro-cell base station gradually reduces its own power when it detects that the signal of the adjacent micro-cell base station becomes strong.
  • an embodiment of the present invention provides a micro cell base station, including: a detecting unit, configured to perform downlink detection; and an adjusting unit, configured to gradually increase when detecting that a signal of an adjacent micro cell base station becomes weak The power of the micro cell base station, and when the signal of the adjacent micro cell base station is detected to be strong, the power of the micro cell base station is gradually reduced.
  • an embodiment of the present invention provides a micro cell base station, including: a processor, configured to: perform downlink detection on the micro cell base station; and if a micro cell base station signal adjacent to the micro cell base station is weakened , gradually increasing the transmission power of the microcell base station itself; if it is detected The signal of the micro cell base station adjacent to the micro cell base station becomes stronger, and the transmit power of the micro cell base station itself is gradually reduced; and the memory connected to the processor.
  • an embodiment of the present invention provides a micro cell base station, including: a memory, configured to store an instruction, and a processor, configured to execute the instruction, to enable the micro cell base station to perform the foregoing method of the present invention.
  • embodiments of the present invention provide a machine readable medium storing instructions that, when executed by a machine, enable the machine to perform the above method of the present invention.
  • embodiments of the present invention provide a computer program for performing the above method of the present invention.
  • FIG. 1 is a schematic diagram illustrating an interference scenario between a macro cell and a micro cell.
  • FIG. 2 is a diagram illustrating the result of interference management between a macro cell and a micro cell.
  • FIG. 3 is a schematic diagram of adaptive power adjustment of a micro cell base station according to an embodiment of the present invention.
  • 4 is a flow chart of a method for performing adaptive power adjustment of a micro cell base station according to an embodiment of the present invention.
  • FIG. 5 is a flow chart of a method for performing adaptive power adjustment of a micro cell base station according to an embodiment of the present invention.
  • 6A, 6B, 7 and 8 are block diagrams of apparatus for performing adaptive power adjustment of a microcell base station in accordance with an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a micro cell base station implemented according to an embodiment of the present invention.
  • microcell base station and micro base station may be used interchangeably to mean the same or similar meanings, as will be apparent to those skilled in the art.
  • the present invention is described by taking a microcell base station in a UMTS (Universal Mobile Telecommunications System) network as an example, the present invention is equally applicable to 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 ( Wireless networks such as Long Term Evolution, WLAN (Wireless Local Area Networks) / WiFi (Wireless Fidelity) and WiMAX ( Worldwide Interoperability for Microwave Access), especially These wireless systems are in the context of a home base station.
  • 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 Wireless networks such as Long Term Evolution, WLAN (Wireless Local Area Networks) / WiFi (Wireless Fidelity) and WiMAX ( Worldwide Interoperability for Microwave Access), especially These wireless systems are in
  • the present invention is also applicable to a scenario in which a macro base station and a micro base station are simultaneously disposed, and the micro base station can comprehensively consider the received neighboring micro base station power information or the detected power information, and optionally refers to the macro base station initiated.
  • the power adjustment process dynamically adjusts its own power to meet continuous network deployment scenarios.
  • the wireless terminal can be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device that is connected to the wireless modem.
  • the wireless terminal can communicate with one or more via a radio access network (eg, RAN, Radio Access Network)
  • the core network communicates, and the wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, can be portable, pocket, handheld, computer built or car mounted Mobile devices that exchange language and/or data with a wireless access network.
  • PCS Personal Communication Service
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA Personal Digital Assistant
  • 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.
  • the base station controller may be a base station controller (BSC) in GSM or CDMA, or may be a radio network controller (RNC) in WCDMA, which is not limited in the present invention.
  • BSC base station controller
  • RNC radio network controller
  • system and “network” are often used interchangeably herein.
  • the term “and/or,” is merely an association describing an associated object, indicating that there may be three relationships.
  • a and / or B can mean: There are three cases where A exists separately, A and B exist at the same time, and B exists separately.
  • the character "/,,” in this article generally means that the contextual object is a kind of "or,” relationship.
  • the micro cell base station 2 when the power of the micro cell base station 1 changes to the coverage size indicated by the broken line, the micro cell base station 2 needs to increase the power to expand the coverage, as indicated by the dotted line. This can compensate for the coverage discontinuity caused by the power reduction of the microcell base station 1. At the same time, UE2 can continue to accept the service of the micro cell base station under the coverage of the micro cell base station 2.
  • the micro cell base station 1 when the micro cell base station 1 adjusts its own transmit power, the micro cell base station 1 initiates an adaptive power adjustment procedure with the neighboring micro cell base station (e.g., the micro cell base station 2). For example, when tiny When the base station 1 decides to adjust its power or when the micro cell base station 1 has adjusted its power, the micro cell base station 1 initiates an adaptive power adjustment procedure with the adjacent micro cell base station.
  • the power adjustment of the microcell base station 1 may be up or down.
  • the interfering source micro cell base station 1 is found and measured, and the interference source micro cell base station 1 is reported to the RNC or the macro base station. Then, the RNC or the macro base station transmits an indication to the micro cell base station 1 to inform it to reduce the transmission power to reduce downlink interference to the MUE1.
  • the microcell base station 1 receives the power adjustment command from the macro base station or the RNC and then lowers its power, thereby reducing the interference to the MUE.
  • the MUE1 when the MUE1 as shown in FIG. 3 is close to the micro cell base station 1 and discovers that the micro cell base station 1 interferes with itself, for example, when the signal quality of the interfering source micro cell base station 1 is found to be wide by the MUE1, Or, when the MUE1 finds that the normal communication quality cannot be satisfied due to the interference, the MUE1 may send a cell update message to the micro cell base station 1 or send a measurement report to the macro base station, and the macro base station may initiate a handover request and the like to the micro cell base station 1.
  • the micro cell base station 1 When the micro cell base station 1 receives the cell update message or the handover request message sent by the MUE1, it finds that the MUE1 is interfered by the micro cell base station 1 and does not have access to the micro cell base station 1, and the micro cell base station 1 can find the MUE. When there is interference, reduce its own transmit power and reduce the interference to the MUE.
  • the microcell base station 1 can be up-regulated to restore power after a period of power down.
  • the microcell base station 1 transmits a power message, such as an adjustment Info Transfer Request message, to the neighboring micro cell base station 2 to instruct the micro cell base station 2 to adjust according to the power adjustment information in the power message. Its own power.
  • the power message may include an indication of whether the micro cell base station 1 adjusts its own power to reduce or increase the power.
  • the power message may also include an adjustment amount of the microcell base station 1 to adjust the power and/or a current power of the microcell base station 1.
  • the power message It is also possible to include the time at which the microcell base station 1 adjusts the power, that is, the microcell base station 1 recovers power after adjusting the power for the time.
  • the micro cell base station 2 can consider that the micro cell base station 1 adjusts the power by a fixed adjustment amount, and accordingly the micro cell base station 2 is also adjusted with a fixed adjustment amount. Its own power.
  • the fixed adjustment amount may be pre-configured information between the base stations of the previous micro cells.
  • the power message includes an indication that the micro cell base station 1 adjusts its own power to reduce or increase the power, but may not include the indication.
  • the micro cell base station 2 can determine whether the power adjustment of the micro cell base station 1 is up or down according to the current and previous power of the micro cell base station 1.
  • the micro cell base station 2 may determine the micro by measuring the power of the micro cell base station 1 after receiving the power message. Whether the power adjustment of the base station 1 is up or down.
  • the power message can include at least one of the above parameters.
  • the micro cell base station 2 adjusts its own power according to the power adjustment information in the power message.
  • the micro cell base station 2 when the power adjustment information transmission request message received from the adjacent micro cell base station 1 includes an indication that the micro cell base station 1 reduces its own transmission power, the micro cell base station 2 increases its own transmission. Power to ensure continuous coverage of the microcell.
  • the micro cell base station 2 reduces its own transmission power to ensure In the case of continuous coverage of the microcell, power consumption is reduced and possible interference is reduced.
  • the micro cell base station may further consider the power adjustment information sent by the macro base station to dynamically adjust its own power. For example, when the power adjustment information transmission request message received from the adjacent micro cell base station 1 includes an indication that the micro cell base station 1 reduces its own transmission power, the micro cell base station 2 does not receive the drop from the macro base station. Power indication and/or no discovery of MUE In the case of interference, the transmission power can be increased.
  • the micro cell base station 2 receives the power down indication sent by the macro base station or finds that there is interference to the MUE, the micro cell base station 1 is reduced even if the power adjustment information transmission request message received from the adjacent micro cell base station 1 includes
  • the microcell base station 2 preferably does not increase its transmission power, and preferably reduces the power according to the power reduction indication sent by the macro base station.
  • the micro cell base station 2 when the power adjustment information transmission request message received from the adjacent micro cell base station 1 includes an indication that the micro cell base station 1 increases its own transmission power, the micro cell base station 2 reduces its transmission power. In this case, the microcell base station 2 can reduce its transmission power when it further receives the power down indication from the macro base station and/or finds interference with the MUE.
  • the micro cell base station 2 can consider that the micro cell base station 1 is adjusted by a fixed adjustment amount, and correspondingly the micro cell The base station 2 also adjusts its own power with a fixed adjustment amount.
  • the fixed adjustment amount may be information configured between the previous micro cell base stations. If the power adjustment received by the neighboring micro cell base station 1 carries the power adjustment amount of the micro cell base station 1, the micro cell base station 2 can adjust its own power according to the power adjustment amount by a corresponding adjustment amount.
  • the power adjustment amount of the micro cell base station 1 and the corresponding power adjustment amount of the micro cell base station 2 may be information configured between the previous micro cell base stations, and used to gradually adjust the transmit power of the adjacent micro cell base station to Continuous coverage is guaranteed while reducing interference.
  • the micro cell base station 2 can calculate the adjustment amount in real time, for example, the micro cell base station 2 according to the previously received micro cell base station 1 power and The adjusted power of the micro-cell base station 1 calculates the adjusted size of the micro-cell base station 1 to determine the amount of self-adjustment, or according to the power of the current micro-cell base station 2 and the micro-cell base station 1 and their pre-configured position parameters or distance parameters.
  • the path loss is calculated to obtain a power adjustment value to ensure continuous coverage of the micro cell base station.
  • the micro cell base station 2 can According to this time, its own power is adjusted at a corresponding time. For example, the microcell base station 2 recovers its power after adjusting its power for a certain time.
  • the microcell base station 2 can comprehensively consider how to adjust its own power according to information sent by one or more neighboring micro cell base stations, for example, if the micro cell base station 2 receives more than one adjacent micro cell at the same time.
  • the information sent by the base station can be judged according to most principles, for example, when a majority (more than half) of the received multiple power messages include an indication of power reduction of the neighboring micro cell base stations, and a few contain adjacent micro cells.
  • the micro cell base station 2 can decide to increase its own power. If the power message indicating the power minus 'j, and the number of power messages indicating the increase in power are equal, the micro cell base station 2 may decide to keep its own power unchanged.
  • Other standards can also be used to consider how to adaptively adjust the power.
  • the micro cell base station 2 replies to the micro cell base station 1 response message, for example, a power adjustment information delivery response message, where the response message may include a manner in which the micro cell base station 2 adjusts power and/or a size of the adjusted power.
  • the microcell base station 1 actively transmits its information for adjusting its own power to the adjacent micro cell base station 2 to instruct the micro cell base station 2 to adjust the power according to the power of the adjacent micro cell base station. Adjust its own power to achieve dynamic adaptive power adjustment in time.
  • the power message sent by the micro cell base station 1 to the adjacent micro cell base station 2 includes an indication directly requesting the micro cell base station 2 to reduce or increase the power.
  • the power message may further include an adjustment amount requiring the micro cell base station 2 to adjust power, and/or a target power value requiring the micro cell base station 2 to adjust power, and/or requiring the micro cell base station 2 to adjust the power. time.
  • the microcell base station 2 increases or decreases its own power based on an indication of increased power or reduced power contained in the power message received from the neighboring microcell base station 1.
  • the microcell base station 2 adjusts its own power according to the adjustment amount.
  • the microcell base station 2 adjusts its own power according to the target power value.
  • the microcell base station 2 adjusts its own power according to the power message, and resumes its power after the indicated time.
  • Figure 5 illustrates an adaptive power adjustment method in accordance with another embodiment.
  • the micro cell base station when the micro cell base station can provide services for both the accessed UE and the downlink detection, the micro cell base station can use the capability to implement adaptive power adjustment to ensure continuous coverage of the micro cell base station. .
  • the microcell base station (e.g., the microcell base station 2) performs downlink detection while providing services to the accessed UE.
  • the micro cell base station 2 detects that the signal of the adjacent micro cell base station 1 is weak, for example, it is detected that the signal quality of the adjacent micro cell base station 1 drops to a certain threshold, or the neighboring micro cell base station 1 is detected. If the amount of signal power drops exceeds the threshold for a certain period of time, the micro cell base station 2 gradually increases its transmission power. For example, the micro cell base station 2 can gradually increase its power by a power adjustment amount, which may be previously
  • the information that is configured between the micro-cell base stations may also be a value calculated by the micro-cell base station 2 in real time according to various parameters. For example, the micro-cell base station 2 calculates the power of the micro-cell base station 1 detected before and the currently detected micro-cell base station 1 power.
  • the size of the power adjustment of the micro cell base station 1 is determined to determine the amount of self adjustment, or the path loss is calculated according to the power of the current micro cell base station 2 and the micro cell base station 1 and their pre-configured position parameters or distance parameters, thereby obtaining power. Adjust the value to ensure continuous coverage of the microcell.
  • the microcell base station can determine whether the power of the neighboring micro cell base station changes by detecting the common pilot channel signal of the neighboring micro cell base station, for example, when the micro cell base station 2 detects the common pilot channel of the neighboring micro cell base station 1.
  • the microcell base station 2 determines that the signal of the micro cell base station 1 becomes weak; when the micro cell base station 2 detects that the common pilot channel signal of the neighboring micro cell base station 1 becomes strong within a certain time, The microcell base station 2 determines the signal of the micro cell base station 1 Become stronger.
  • the timing may be pre-configured or negotiated.
  • the micro cell base station 2 detects that the signal of the adjacent micro cell base station 1 becomes strong, for example, it detects that the signal quality of the adjacent micro cell base station 1 rises to a certain threshold, or detects the neighboring micro cell base station 1 When the amount of signal power rise exceeds the threshold for a certain period of time, the transmission power is gradually reduced.
  • the micro cell base station 2 can gradually increase its power by a power adjustment amount.
  • the power adjustment amount may be
  • the information configured between the base stations may also be a value calculated by the micro cell base station 2 in real time according to various parameters.
  • Figure 6A shows an apparatus 6000A capable of implementing the adaptive power adjustment of the present invention, which may be a microcell base station as described above, such as a microcell base station 1, or a module implemented in a microcell base station.
  • the micro cell base station 6000A includes a sending unit 6010, configured to send a power message to the neighboring micro cell base station to indicate that the neighboring micro cell base station adjusts the power message according to the power message when the micro cell base station adjusts its own power. Its own power.
  • the foregoing power message may include: the manner in which the micro cell base station adjusts its own power is an indication of reducing or increasing power, and/or an adjustment amount of the micro cell base station adjusting power, and/or the micro cell base station Current power, and/or time at which the microcell base station adjusts power.
  • the foregoing power message may include: a command for requesting the neighboring micro cell base station to adjust power according to increasing power or reducing power, and/or requiring an adjustment amount of power adjustment of the adjacent micro cell base station And/or requesting the neighboring microcell base station to adjust the target power value of the power, and/or the time required for the neighboring microcell base station to adjust the power.
  • the micro cell base station 6000A optionally further includes a receiving unit 6020, configured to receive a response message from a neighboring micro cell base station, where the response message may include a manner and/or an adjustment amount of power adjustment by the adjacent micro cell base station.
  • FIG. 6B illustrates an apparatus 6000B capable of implementing the adaptive power adjustment of the present invention.
  • the apparatus may be the microcell base station described above, such as the microcell base station 1, or may be a module implemented in the microcell base station.
  • the microcell base station 6000B includes a transmitting unit 6010 and optionally a receiving unit 6020 shown in FIG. 6A.
  • the micro cell base station 6000B further includes an adjusting unit 6030, configured to adjust power of the micro cell base station when at least one of the following situations occurs: the micro cell The base station receives the power adjustment command from the macro base station; the micro cell base station detects that it has interference to the user equipment that does not have access to the micro cell base station; the micro cell base station needs to restore power after the power is lowered for a period of time.
  • Figure 7 shows an apparatus 7000 capable of implementing the adaptive power adjustment of the present invention, which may be a microcell base station as described above, such as a microcell base station 2, or a module implemented in a microcell base station.
  • the micro cell base station 7000 includes a receiving unit 7010, configured to receive a power message from a neighboring micro cell base station, where the power message is sent to the micro cell base station 7000 when the neighboring micro cell base station adjusts its own power. .
  • the power message includes: the manner in which the neighboring micro cell base station adjusts its own power is an indication of decreasing or increasing power, and/or an adjustment amount of the adjacent micro cell base station adjusting power, and/or Or the current power of the neighboring micro cell base station, and/or the time at which the adjacent micro cell base station adjusts power.
  • the power message includes: a command to require the micro cell base station 7000 to adjust power in a manner of increasing power or reducing power, and/or an adjustment amount, and/or requirement for the micro cell base station 7000 to adjust power adjustment.
  • the microcell base station 7000 adjusts the target power value of the power and/or the time at which the microcell base station 7000 is required to adjust the power.
  • the micro cell base station 7000 further includes an adjusting unit 7020, configured to adjust power of the micro cell base station according to the power message.
  • the micro cell base station 7000 optionally further includes a transmitting unit 7030, configured to send a response message to the neighboring micro cell base station, where the response message includes a manner and/or an adjustment amount of the micro cell base station 7000 to adjust power.
  • the power message includes an indication of whether the neighboring micro cell base station adjusts its own power by decreasing or increasing the power.
  • the adjusting unit 7020 increases the power of the micro cell base station 7000; when the power message includes the adjacent
  • the adjusting unit 7020 reduces the power of the micro cell base station 7000.
  • the power message includes a command to require the micro cell base station 7000 to adjust power in a manner that increases power or reduces power.
  • the power message contains the request for the tiny
  • the adjusting unit 7020 increases the power of the micro cell base station 7000; when the power message includes that the micro cell base station 7000 is required to adjust the power according to the power reduction mode.
  • the adjusting unit 7020 reduces the power of the micro cell base station 7000.
  • the adjusting unit 7020 when the power message includes the indication that the neighboring micro cell base station adjusts its own power is an indication of reducing power, if the micro cell base station 7000 does not receive the power reduction indication sent by the macro base station and/or Or, if there is no interference to the mobile device, the adjusting unit 7020 increases the power of the micro cell base station 7000; when the power message includes the indication that the neighboring micro cell base station adjusts its own power is an indication of increasing power, If the micro cell base station 7000 receives the power reduction indication sent by the macro base station and/or finds that there is interference to the mobile device, the adjusting unit 7020 reduces the power of the micro cell base station.
  • the adjusting unit 7020 increases the power of the micro cell base station 7000; if the power message includes a command that requires the micro cell base station 7000 to adjust power in a manner of reducing power, if the micro cell is When the base station 7000 receives the power reduction indication sent by the macro base station and/or finds that there is interference to the mobile device, the adjusting unit 7020 reduces the power of the micro cell base station 7000.
  • FIG. 8 shows an apparatus 8000 capable of implementing the adaptive power adjustment of the present invention, which may be a micro-cell base station capable of providing both a serving UE and a downlink detection, or implemented in the micro-cell base station. s installation.
  • the micro cell base station 8000 device includes a detecting unit 8010 for performing downlink detection.
  • the detecting unit 8010 performs downlink detection while the micro cell base station (for example, the micro cell base station 2) provides services for the accessed UE.
  • the micro cell base station 8000 further includes an adjusting unit 8020, configured to gradually increase the power of the micro cell base station 8000 when detecting that the signal of the adjacent micro cell base station is weak, and when detecting the neighboring micro cell base station When the signal becomes strong, the power of the micro cell base station 8000 is gradually reduced.
  • the adjusting unit 8020 when the detecting unit 8010 detects that the common pilot channel signal of the neighboring micro cell base station becomes weak within a certain time, gradually increases the power of the micro cell base station 8000; and when the detecting unit When the 8010 detects that the common pilot channel signal of the neighboring micro cell base station becomes strong within a certain time, the adjusting unit 8020 gradually reduces the power of the micro cell base station 8000.
  • the various units in Figures 6A, 6B, 7 and 8 may comprise processors, electronics devices, hardware devices, electronic components, logic circuits, memories, or any combination thereof, or the like, or may be implemented using the devices described above.
  • Figure 9 illustrates a wireless device 9000, which may be a microcell base station suitable for use in the present invention, in accordance with an embodiment of the present invention.
  • Wireless device 9000 includes various components coupled through bus 9500, such as processor 9300, memory 9100, and transceiver 9200.
  • Data 9110 and instructions 9120 can be stored in memory 9100.
  • the processor 9200 can implement the adaptive power adjustment disclosed by the present invention by executing the instruction 9120 and using the data 9110.
  • Transceiver 9200 is coupled to antenna 9400 and includes a transmitter 9210 and a receiver 9220 to allow transmission and reception of signals between the wireless device 9000 and the remote device.
  • the processor 9300 realizes the coverage continuity of the micro cell base station by dynamically adjusting the transmission power of the transmitter according to the power adjustment method explained in the above embodiment.
  • the micro cell base station 9000 includes a memory 9100 and a processor 9300, configured to send a power message, such as a power adjustment information transmission request message, to a neighboring micro cell base station when the micro cell base station 9000 adjusts its own power.
  • the neighboring micro cell base station is instructed to adjust its own power according to the power message.
  • the processor is optionally further configured to receive response information, such as a power adjustment information delivery response message, from a neighboring microcell base station, the response message including a manner and/or an adjustment amount by which the neighboring microcell base station adjusts its own power.
  • the processor is further configured to adjust power of the micro cell base station 9000 itself when at least one of the following conditions occurs: the micro cell base station 9000 receives a power adjustment command from the macro base station; the micro cell base station 9000 detects the Interfering with user equipment that does not have access to the micro cell base station 9000; the micro cell The base station 9000 recovers power after the power is lowered for a period of time.
  • the micro cell base station 9000 includes a memory 9100 and a processor 9300, configured to: receive a power message, such as a power adjustment information delivery request message, from a micro cell base station adjacent to the micro cell base station 9000, where the message is When the neighboring micro cell base station adjusts its own power, it is sent to the micro cell base station 9000; and the power of the micro cell base station 9000 itself is adjusted according to the power message.
  • the processor is optionally further configured to transmit response information, such as a power adjustment information delivery response message, to the neighboring micro cell base station, the response message including a manner and/or an adjustment amount of the micro cell base station 9000 adjusting its own power.
  • the processor is further configured to: when the power message includes an indication that the neighboring micro cell base station adjusts its own power is to reduce the power, the micro cell base station 9000 increases its own power; when the power message includes The manner in which the neighboring micro cell base station adjusts its own power is to increase the power, so that the micro cell base station reduces its own power.
  • the processor is further configured to: when the power message includes a command that requires the micro cell base station 9000 to adjust power according to increasing power, enable the micro cell base station 9000 to increase its own power; when the power message includes a request When the micro cell base station 9000 adjusts the power command in a manner of reducing power, the micro cell base station reduces its own power.
  • the processor is further configured to: when the power message includes the indication that the neighboring micro cell base station adjusts its own power is to reduce the power, if the micro cell base station 9000 does not receive the power reduction indication sent by the macro base station And if the interference is not found to the mobile device, the micro cell base station 9000 increases its own power; when the power message includes the neighboring micro cell base station, the way to adjust the power of the base station is to increase the power indication, if The micro cell base station 9000 receives the power reduction indication sent by the macro base station and/or finds that there is interference to the mobile device, so that the micro cell base station 9000 reduces its own power.
  • the processor is further configured to: when the power message includes a command for requesting the micro cell base station 9000 to adjust power according to increasing power, if the micro cell base station 9000 does not receive the power reduction indication sent by the macro base station and/or Or if the interference with the mobile device is not found, the micro cell base station 9000 increases its own power; when the power message includes a command for the micro cell base station 9000 to adjust the power in a manner of reducing power, if the micro cell is The base station 9000 receives the power reduction indication sent by the macro base station and/or Or it is found that there is interference to the mobile device, so that the micro cell base station 9000 reduces its own power.
  • the micro cell base station 9000 includes a memory 9100 and a processor 9300, configured to: perform downlink detection while the micro cell base station 9000 provides services for the accessed UE; if the micro cell base station is detected If the 9000 neighboring micro cell base station signal is weak, the micro cell base station 9000 itself is gradually increased in transmit power; if it is detected that the micro cell base station signal adjacent to the micro cell base station 9000 becomes strong, the micro cell is gradually reduced. The base station 9000 itself transmits power.
  • the processor is further configured to: when detecting that the common pilot channel signal of the adjacent micro cell base station becomes weak within a certain time, gradually increase the power of the micro cell base station 9000; when detecting the adjacent micro cell When the common pilot channel signal of the base station becomes strong within a certain time, the power of the micro cell base station 9000 is gradually reduced.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • 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 in an electrical, mechanical or other form.
  • the components displayed as units may or may not be physical units, i.e., may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated in In a 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 invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM, a random access memory), a magnetic disk or an optical disk, and the like.
  • the medium of the code includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM, a random access memory), a magnetic disk or an optical disk, and the like.

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Abstract

提供了一种用于微小区基站的自适应功率调整方法,当第一微小区基站调整自身的功率时,第一微小区基站向相邻的第二微小区基站发送功率消息,第二微小区基站根据收到的功率消息来调整其自身的功率。通过本发明,微小区基站能够根据周围环境动态调整发射功率,保证微小区基站间的覆盖连续性,并产生宏业务卸载增益。

Description

微小区基站的自适应功率调整 本申请要求于 2011 年 09 月 22 日提交中国专利局、 申请号为 201110305298.3、发明名称为"微小区基站的自适应功率调整 "的中国专利申 请的优先权, 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线通信系统, 具体涉及微小区基站的自适应功率调整。 背景技术
随着移动通信技术的发展, 用户需求越来越呈现出多样化。 为了满足 用户多样化的需求, 家庭室内覆盖基站和企业级的内部覆盖基站, 以及其 他一些私有网络应运而生。 如家庭基站, 或称毫微微蜂窝基站、 微小区基 站、 小区、 femto (毫 敖小区)、 AP ( Access Point, 接入点), 成为目前 最有潜力的低成本接入技术。
微小区基站有三种不同接入模式: 闭合模式、 混合模式和开放模式。 闭合模式只允许签约用户接入微小区; 混合模式允许所有用户接入微小区, 但是区分签约和非签约用户, 提供不同的接入等级和服务等级; 开放模式 类似宏网小区, 允许所有用户接入。
微小区基站作为毫微微基站, 与传统的宏基站相比, 具有如下特点: 覆盖范围小; 携带用户数目有限; 数量大; 密集部署; 多层重叠覆盖; 由 用户管理的设备, 而非运营商控制的设备; 而微小区基站的频段可能是与 宏网络异频部署, 但也可能同频部署; 发射功率小; 微小区基站的邻区列 表配置较困难, 微小区基站可以通过上行检测, 自动配置邻区并完成开机 频点和扰码的选择。 微小区基站应用的场景十分广泛: 家庭、 企业、 公共 场所等, 特别是在企业和公共场所这种需要多个微小区进行连续布网的场 景, 它的引入增强了这些场景的室内覆盖, 同时还可帮助宏小区进行业务 卸载。
当微小区基站与宏基站使用相同频率布网时, 由于宏小区网络覆盖和 微小区覆盖会有重叠现象, 从而造成同频干扰问题, 包括宏网和微小区之 间相互的上下行干扰。 特别是, 当不具有接入微小区基站权限的 UE ( User Equipment, 用户设备)(即, 非签约用户)靠近微小区时, 由于微小区基站 信号较强, 会对该 UE产生干扰, 甚至导致掉话。
闭合模式的微小区基站只允许签约用户接入, 当没有权限的用户靠近 微小区时, 由于受到微小区基站的同频干扰且无法切换进入微小区, 从而 会造成业务的中断。
^口图 1 所示, UE1 是 UMTS ( Universal Mobile Telecommunications System, 通用移动通信系统) 中的 MUE ( Macro UE, 宏 UE ), 即服务小 区为宏小区的 UE, 没有权限接入靠近的微小区基站; UE2是 HUE ( Home UE, 家庭 UE ), 即服务小区基站是微小区基站的 UE, 目前该 UE2接入微 小区 1。微小区 1和微小区 2是在一些家庭、企业或公共场所等的连续覆盖 场景, 在微小区 1和微小区 2周围还能布有其他微小区, 满足连续覆盖。
当 UE1靠近微小区 1时, 由于该 UE1受到微小区 1的同频干扰而又无 法接入微小区 1 , 这时 UE1 可以启动宏无线网络控制器 (RNC , Radio Network Controller )和微小区基站 1间的干扰协调流程, 使 RNC指示微小 区基站 1降低其发射功率以减小对 UE1的下行干扰。这里为了说明的方便, 使用相同的标号 "1 "或" 2"来表示微小区和微小区基站,术语微小区和微小区 基站可以互换使用, 表示相同或相似的含义, 这对于本领域技术人员来说 是清楚的。
通过宏小区和微小区基站之间干扰协调, 当某一 MUE靠近某一微小区 后, 微小区基站根据需要会降低发射功率, 相应的该微小区覆盖范围将变 小, 这时就不能保证微小区间的连续覆盖, 造成覆盖空洞, 影响原来 HUE 的性能。
如图 2所示, 由于 UE1的靠近, 微小区基站 1需要降低功率, 但是此 时原本微小区基站 1和微小区基站 2的连续覆盖会发生改变,微小区基站 1 的覆盖范围将变为虚线所示的大小, 微小区基站 1和微小区基站 2之间产 生覆盖的空洞。 UE2位于该空洞区域, 原来是在微小区基站 1 的覆盖范围 内, 但此时将失去微小区覆盖。 此时 UE2不得不切换到宏小区, 这会增加 宏小区的业务负载, 并与签约用户在家中或企业中尽量接受微小区服务的 原则违背; 同时, 如果在室内宏小区的信号较弱, 又缺少微小区覆盖, 则 会造成 UE2的掉话, 影响其性能。
如上所述, 在微小区连续覆盖的场景中, 当周围环境发生变化时, 有 可能形成微小区间的覆盖空洞, 进而会降低宏小区业务卸载增益并有可能 影响 UE性能。 发明内容
本发明多个方面提供一种对于例如 femto 的微小区基站进行自适应功 率调整的方法, 使得微小区基站能够及时地根据周围环境动态调整发射功 率, 保证微小区基站间的覆盖连续性, 并产生业务卸载增益。
一方面, 本发明实施例提供了一种功率自适应调整方法, 包括: 当第 一微小区基站调整自身的功率时, 第一微小区基站向相邻的第二微小区基 站发送功率消息, 以指示第二微小区基站根据所述功率消息来调整其自身 的功率。
另一方面, 本发明实施例提供了一种微小区基站, 包括: 发送单元, 用于在该微小区基站调整自身的功率时, 向相邻的微小区基站发送功率消 息, 以指示该相邻的微 d、区基站根据所述功率消息来调整其自身的功率。
另一方面, 本发明实施例提供了一种微小区基站, 包括: 处理器, 用 于当该微小区基站调整自身的功率时, 向相邻的微小区基站发送功率消息, 以指示相邻的微小区基站根据所述功率消息中的功率调整信息来调整其自 身的功率; 以及与所述处理器相连的存储器。
另一方面, 本发明实施例提供了一种功率自适应调整方法, 包括: 第 二微小区基站从相邻的第一微小区基站接收功率消息, 其中所述功率消息 是当第一微小区基站调整其自身的功率时发送给第二微小区基站的; 第二 微小区基站根据该功率消息来调整其自身的功率。
另一方面, 本发明实施例提供了一种微小区基站, 包括: 接收单元, 用于从相邻的微小区基站接收功率消息, 其中所述功率消息是当该相邻的 微小区基站调整其自身的功率时发送给该微小区基站的; 调整单元, 用于 根据所述功率消息来调整该微小区基站的功率。
另一方面, 本发明实施例提供了一种微小区基站, 包括: 处理器, 用 于: 从与该微小区基站相邻的微小区基站接收功率消息, 其中该功率消息 是当相邻的微小区基站调整其自身的功率时发送给该微小区基站的; 根据 该功率消息来调整该微小区基站自身的功率; 以及与所述处理器相连的存 储器。
另一方面, 本发明实施例提供了一种功率自适应调整方法, 包括: 微 小区基站进行下行检测; 该微小区基站当检测到相邻的微小区基站的信号 变弱时, 逐步增大其自身功率; 该微小区基站当检测到相邻的微小区基站 的信号变强时, 逐步减小其自身功率。
另一方面, 本发明实施例提供了一种微小区基站, 包括: 检测单元, 用于进行下行检测; 调整单元, 用于当检测到相邻的微小区基站的信号变 弱时, 逐步增大该微小区基站的功率, 以及当检测到该相邻的微小区基站 的信号变强时, 逐步减小该微小区基站的功率。
另一方面, 本发明实施例提供了一种微小区基站, 包括: 处理器, 用 于: 使该微小区基站进行下行检测; 如果检测到与该微小区基站相邻的微 小区基站信号变弱, 则逐步增大该微小区基站自身发射功率; 如果检测到 与该微小区基站相邻的微小区基站信号变强, 则逐步减小该微小区基站自 身发射功率; 以及与所述处理器相连的存储器。
另一方面, 本发明实施例提供了一种微小区基站, 包括: 存储器, 用 于存储指令; 处理器, 用于执行该指令, 以使得该微小区基站能够执行本 发明的上述方法。
另一方面, 本发明实施例提供了一种机器可读介质, 其中存储指令, 当机器执行该指令时, 使得该机器能够执行本发明的上述方法。
另一方面, 本发明实施例提供了一种计算机程序, 该计算机程序用于 执行本发明的上述方法。
通过参考以下结合附图的说明以及权利要求书中的内容, 并且随着对 本发明实施例的更全面的理解, 本发明的其他目的及效果将变得更加清楚 和易于理解。 附图说明
以下将参照附图, 通过实施例详细地描述本发明, 其中:
图 1是说明宏小区和微小区之间的干扰场景的示意图。
图 2是说明宏小区和微小区之间干扰管理结果的示意图。
图 3是根据本发明实施例进行的微小区基站自适应功率调整的示意图。 图 4 是根据本发明实施例进行微小区基站自适应功率调整的方法流程 图。
图 5 是根据本发明实施例进行微小区基站自适应功率调整的方法流程 图。
图 6A、 6B、 7和 8是根据本发明实施例用于进行微小区基站自适应功 率调整的装置的方块图。
图 9是根据本发明实施例实现的微小区基站的示意图。
在所有附图中, 相同的标号表示相似或相应的特征或功能。 具体实施方式
下文中详细描述本发明的自适应功率调整方法。 为了说明的简单, 在 下文中以两个相邻微小区基站为例描述了本发明, 但是对于本领域技术人 员来说应该清楚, 实施例中所描述的发明原理可以应用于多于两个相邻微 小区基站的场景。 在下面的描述中, 术语微小区、 微小区基站、 微基站可 以互换使用, 表示相同或相似的含义, 这对于本领域技术人员来说是清楚 的。
虽然在实施例中以 UMTS ( Universal Mobile Telecommunications System, 通用移动通信系统) 网络中的微小区基站为例描述本发明, 但是 本发明同样适用于 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, 尤其是这些无线系统在布有家庭基站的场景。 同样 在一些同时布有宏基站和微基站的场景, 本发明也适用, 微基站能够根据 收到的相邻微基站功率信息或者检测到的功率信息综合考虑, 同时可选地 参考宏基站发起的功率调整流程来动态地调整自身功率, 满足连续布网场 景。
本文中结合无线终端和 /或基站控制器来描述各种方面。
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^口, 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 )。
基站控制器,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 ), 本发明并不限定。
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。
如图 3所示, 根据本发明的实施例, 当微小区基站 1的功率发生变化, 变成虚线所示的覆盖大小后, 微小区基站 2需要增大功率扩大覆盖范围, 如虚线所示, 这样就能弥补由于微小区基站 1降低功率造成的覆盖不连续。 同时 UE2在微小区基站 2的覆盖下, 可以继续接受微小区基站的服务。
图 4描述了根据本发明实施例的微小区基站自适应功率调整方法。 在 4010, 当微小区基站 1调整其自身的发射功率时, 微小区基站 1发起与相 邻微小区基站(例如微小区基站 2 )的自适应功率调整流程。 例如, 当微小 区基站 1决定调整其功率时或当微小区基站 1 已调整其功率后, 微小区基 站 1发起与相邻微小区基站的自适应功率调整流程。 微小区基站 1 的功率 调整可以是上调或者下调。
根据一个实施例, 当如图 3所示的 MUE1靠近微小区基站 1控制的微 小区时, 会发现并测量该干扰源微小区基站 1 , 并向 RNC或宏基站上报该 干扰源微小区基站 1 , 之后 RNC或宏基站会向该微小区基站 1传输指示, 通知其降低发射功率, 来减少对该 MUE1的下行干扰。 微小区基站 1收到 来自宏基站或 RNC的功率调整指令后下调其功率, 从而减轻对 MUE的干 扰。
根据另一个实施例, 当如图 3所示的 MUE1靠近微小区基站 1并发现 微小区基站 1对自己的干扰时, 例如, 当 MUE1发现干扰源微小区基站 1 的信号质量达到阔值时, 或者 MUE1发现由于存在干扰而无法满足正常的 通信质量时, MUE1可以向微小区基站 1发送小区更新消息或者向宏基站 发送测量报告, 此时宏基站会向微小区基站 1 发起切换请求等消息。 当微 小区基站 1收到 MUE1发送的小区更新消息或者切换请求等消息时, 会发 现该 MUE1受到微小区基站 1干扰且没有权限接入微小区基站 1 , 则微小 区基站 1可以在发现对 MUE有干扰时降低自己的发射功率,减少对该 MUE 的干扰。
根据另一个实施例, 微小区基站 1 可以在下调功率一段时间后上调以 恢复功率。
在 4020, 微小区基站 1向相邻的微小区基站 2发送功率消息, 例如功 率调整信息传递请求消息 ( Adjustment Info Transfer Request ), 以指示微小 区基站 2根据该功率消息中的功率调整信息来调整其自身的功率。 该功率 消息中可以包含微小区基站 1 调整自身功率的方式是降低还是升高功率的 指示。 该功率消息中可选地或可替换地还可以包含微小区基站 1 调整功率 的调整量和 /或微小区基站 1 当前的功率。 该功率消息中可选地或可替换地 还可以包含微小区基站 1调整功率的时间, 即, 微小区基站 1在将功率调 整该时间后恢复功率。 根据一个实施例, 如果该功率消息中不携带功率调 整量, 则微小区基站 2可以认为微小区基站 1是以一个固定调整量调整功 率, 并且相应地微小区基站 2 也以一个固定调整量调整其自身的功率。 例 如, 该固定调整量可以是之前各微小区基站间预先配置好的信息。 该功率 消息中优选包含微小区基站 1 调整自身功率的方式是降低还是升高功率的 指示, 但是也可以不包含该指示。 例如, 当该功率消息中包含微小区基站 1 当前的功率时, 微小区基站 2可以根据微小区基站 1 当前的和先前的功率 确定微小区基站 1 的功率调整是上调还是下调。 又例如, 当该功率消息中 只包含微小区基站 1调整功率的调整量和 /或调整时间时, 微小区基站 2可 以在收到该功率消息后通过下行测量微小区基站 1 的功率来确定微小区基 站 1 的功率调整是上调还是下调。 该功率消息可以包含上述参数中的至少 一个。
在 4030, 微小区基站 2在从相邻的微小区基站 1接收到功率消息后, 微小区基站 2根据该功率消息中的功率调整信息来调整其自身的功率。
根据一个实施例, 当从相邻的微小区基站 1 收到的功率调整信息传递 请求消息中包含微小区基站 1 减小其自身发射功率的指示时, 则微小区基 站 2增大其自身的发射功率, 以保证微小区的连续覆盖。 当从相邻的微小 区基站 1收到的功率调整信息传递请求消息中包含微小区基站 1增大其自 身发射功率的指示时, 则微小区基站 2减小其自身的发射功率, 以在保证 微小区的连续覆盖的情况下降低功耗以及减小可能的干扰。
根据另一个实施例, 除了根据收到的相邻微小区基站功率变化信息之 外, 微小区基站还可以参考宏基站发来的功率调整信息来综合考虑以动态 地调整自身功率。 例如, 当从相邻的微小区基站 1 收到的功率调整信息传 递请求消息中包含微小区基站 1 减小其自身发射功率的指示时, 微小区基 站 2在没有收到宏基站发来的降功率指示并且 /或者没有发现对 MUE有干 扰的情况下, 可增大其发射功率。 微小区基站 2如果收到宏基站发来的降 功率指示或者发现对 MUE有干扰,那么即使从相邻的微小区基站 1收到的 功率调整信息传递请求消息中包含微小区基站 1 减小其自身发射功率的指 示时, 微小区基站 2优选地也不增大其发射功率, 并且优选地根据宏基站 发来的降功率指示来减小功率。
根据另一个实施例, 当从相邻的微小区基站 1 收到的功率调整信息传 递请求消息中包含微小区基站 1 增大其自身发射功率的指示时, 微小区基 站 2减小其发射功率。 在这种情况下, 微小区基站 2在进一步收到宏基站 发来的降功率指示并且 /或者发现对 MUE有干扰的情况下, 可减小其发射 功率。
根据一个实施例, 如果从相邻的微小区基站 1 收到的功率消息中不携 带功率调整量, 则微小区基站 2可以认为微小区基站 1是以一个固定调整 量调整, 并且相应地微小区基站 2也以一个固定调整量调整其自身的功率。 例如, 该固定调整量可以是之前各微小区基站间配置好的信息。 如果从相 邻的微小区基站 1收到的功率消息中携带微小区基站 1的功率调整量, 则 微小区基站 2 可以根据该功率调整量以一个相应的调整量调整其自身的功 率。 例如, 该微小区基站 1 的功率调整量以及微小区基站 2的相应的功率 调整量可以是之前各微小区基站间配置好的信息, 用于逐步地调整相邻微 小区基站的发射功率, 以在减小干扰的同时保证连续覆盖。 如果从相邻的 微小区基站 1收到的功率消息中携带微小区基站 1 当前的功率, 微小区基 站 2可以实时计算调整量,例如微小区基站 2根据之前收到的微小区基站 1 功率与微小区基站 1调整后的功率, 计算出微小区基站 1调整的大小, 来 决定自身调整的量, 或者根据当前微小区基站 2和微小区基站 1的功率以 及它们预先配置的位置参数或距离参数等来计算路径损耗, 从而得到功率 调整值, 以保证微小区基站的连续覆盖。 如果从相邻的微小区基站 1 收到 的功率消息中携带微小区基站 1调整功率的时间, 则微小区基站 2可以根 据该时间以一个相应的时间调整其自身的功率, 例如, 微小区基站 2在将 其功率调整一定时间后恢复其功率。
虽然以两个微小区基站的方式举例说明了本发明, 但是本发明的实现 不限于两个微小区基站的场景。 根据一个实施例, 微小区基站 2可以根据 一个或者多个相邻微小区基站发来的信息综合考虑如何调整其自身的功 率, 例如, 如果微小区基站 2 同时收到多于一个相邻微小区基站发来的信 息, 则可以根据大多数原则来判断, 比如当收到的多个功率消息中的多数 (一半以上) 包含相邻微小区基站功率减小的指示, 而少数包含相邻微小 区基站功率增大的指示, 则微小区基站 2可以决定增大自身的功率。 如果 指示功率减 ' j、的功率消息和指示功率增大的功率消息数量相等, 则微小区 基站 2可以决定保持自身功率不变。 也可以釆用其他的标准来综合考虑如 何自适应调整功率。
可选地, 在 4040 , 微小区基站 2回复微小区基站 1响应消息, 例如功 率调整信息传递响应消息, 该响应消息中可以包含微小区基站 2调整功率 的方式和 /或调整功率的大小。
在上面结合图 4所描述的实施例中, 微小区基站 1将其调整自身功率 的信息主动发送给相邻的微小区基站 2 ,以指示微小区基站 2根据相邻微小 区基站的功率调整相应地调整其自身的功率, 从而及时地实现动态自适应 功率调整。
本发明并不限于上述实施方式。 根据另一个实施例, 在 4020中, 微小 区基站 1向相邻的微小区基站 2发送的功率消息中包含直接要求微小区基 站 2减小或增大功率的指示。 该功率消息中可选地或可替换地还可以包含 要求微小区基站 2调整功率的调整量、 和 /或要求微小区基站 2调整功率的 目标功率值、 和 /或要求微小区基站 2调整功率的时间。
在 4030中, 根据接收自相邻微小区基站 1的功率消息中包含的增大功 率或减小功率的指示, 微小区基站 2增大或减小其自身的功率。 当该功率 消息中包含调整功率的调整量时, 微小区基站 2根据该调整量来调整自身 的功率。 当该功率消息中包含调整功率的目标功率值时, 微小区基站 2根 据该目标功率值来调整自身的功率。 当该功率消息中包含调整功率的时间 时, 微小区基站 2根据该功率消息调整自身功率, 并在该指示的时间后恢 复其功率。
图 5示出了才艮据另一个实施例的自适应功率调整方法。 才艮据该实施例, 当微小区基站既能同时为接入的 UE提供服务, 又能进行下行检测时,微小 区基站可以利用该能力来实现自适应功率调整以保证微小区基站的连续覆 盖。
在 5010中, 微小区基站 (例如微小区基站 2 )在为接入的 UE提供服 务的同时进行下行检测。
在 5020中 , 如果微小区基站 2检测到相邻的微小区基站 1信号变弱 , 例如检测到相邻微小区基站 1 的信号质量下降达到一定阔值, 或者检测到 相邻微小区基站 1 的信号功率下降的量超过阔值达一定时间, 则微小区基 站 2逐步增大其发射功率, 例如微小区基站 2可以逐步地将其功率增大一 个功率调整量, 该功率调整量可以是之前各微小区基站间配置好的信息, 也可以是微小区基站 2根据各种参数实时计算的值, 例如微小区基站 2根 据之前检测的微小区基站 1功率与当前检测的微小区基站 1功率, 计算出 微小区基站 1 功率调整的大小, 来决定自身调整的量, 或者根据当前微小 区基站 2和微小区基站 1的功率以及它们预先配置的位置参数或距离参数 等来计算路径损耗, 从而得到功率调整值, 以保证微小区的连续覆盖。 微 小区基站可以通过检测相邻微小区基站的公共导频信道信号来确定相邻微 小区基站的功率是否发生变化, 例如, 当微小区基站 2检测到相邻微小区 基站 1的公共导频信道信号在一定时间内变弱时, 微小区基站 2确定微小 区基站 1的信号变弱; 当微小区基站 2检测到相邻微小区基站 1的公共导 频信道信号在一定时间内变强时, 微小区基站 2确定微小区基站 1的信号 变强。 其中, 该定时时间可以是预先配置或协商的。
在 5030中 , 如果微小区基站 2检测到相邻的微小区基站 1信号变强 , 例如检测到相邻微小区基站 1 的信号质量上升达一定阔值, 或者检测到相 邻微小区基站 1 的信号功率上升的量超过阔值达一定时间, 则逐步减小其 发射功率, 例如微小区基站 2可以逐步地将其功率增大一个功率调整量, 类似地, 该功率调整量可以是之前各微小区基站间配置好的信息, 也可以 是微小区基站 2根据各种参数实时计算的值。
图 6A示出了能够实现本发明的自适应功率调整的装置 6000A,该装置 可以是上述的微小区基站, 例如微小区基站 1 , 也可以是实现在微小区基站 中的模块。 该微小区基站 6000A包括发送单元 6010, 用于当该微小区基站 调整自身的功率时, 向相邻的微小区基站发送功率消息, 以指示该相邻的 微小区基站根据该功率消息来调整其自身的功率。 根据一个例子, 上述功 率消息中可以包含: 该微小区基站调整自身功率的方式是减小还是增大功 率的指示、 和 /或该微小区基站调整功率的调整量、 和 /或该微小区基站目前 的功率、 和 /或所述微小区基站调整功率的时间。 根据一个例子, 上述功率 消息中可以包含: 要求该相邻的微小区基站按照增大功率或减小功率的方 式调整功率的命令、 和 /或要求该相邻的微小区基站调整功率的调整量、 和 / 或要求该相邻的微小区基站调整功率的目标功率值、 和 /或要求该相邻的微 小区基站调整功率的时间。 该微小区基站 6000A 可选地还包括接收单元 6020 , 用于从相邻的微小区基站接收响应消息, 该响应消息可以包含相邻 的微小区基站调整功率的方式和 /或调整量。
图 6B示出了能够实现本发明的自适应功率调整的装置 6000B , 该装置 可以是上述的微小区基站, 例如微小区基站 1 , 也可以是实现在微小区基站 中的模块。 该微小区基站 6000B包括图 6A中所示的发送单元 6010和可选 地包括接收单元 6020。 该微小区基站 6000B还包括调整单元 6030 , 用于当 发生以下情况中的至少一种情况时, 调整该微小区基站的功率: 该微小区 基站收到来自宏基站的功率调整指令; 该微小区基站检测到其对没有权限 接入该微小区基站的用户设备有干扰; 该微小区基站在下调功率一段时间 后需要恢复功率。
图 7示出了能够实现本发明的自适应功率调整的装置 7000 , 该装置可 以是上述的微小区基站, 例如微小区基站 2, 也可以是实现在微小区基站中 的模块。 该微小区基站 7000 包括接收单元 7010 , 用于从相邻的微小区基 站接收功率消息, 其中该功率消息是当该相邻的微小区基站调整其自身的 功率时发送给该微小区基站 7000的。 根据一个例子, 该功率消息中包含: 该相邻的微小区基站调整自身功率的方式是减小还是增大功率的指示、 和 / 或该相邻的微小区基站调整功率的调整量、 和 /或该相邻的微小区基站目前 的功率、 和 /或该相邻的微小区基站调整功率的时间。 根据一个例子, 该功 率消息中包含: 要求该微小区基站 7000按照增大功率或减小功率的方式调 整功率的命令、 和 /或要求该微小区基站 7000调整功率的调整量、 和 /或要 求该微小区基站 7000调整功率的目标功率值、和 /或要求该微小区基站 7000 调整功率的时间。 该微小区基站 7000还包括调整单元 7020, 用于根据该功 率消息来调整该微小区基站的功率。 该微小区基站 7000可选地还包括发送 单元 7030 , 用于向该相邻的微小区基站发送响应消息, 该响应消息包含该 微小区基站 7000调整功率的方式和 /或调整量。
根据一个实施例, 该功率消息中包含该相邻的微小区基站调整自身功 率的方式是减小还是增大功率的指示。 当该功率消息中包含该相邻的微小 区基站调整自身功率的方式是减小功率的指示时, 该调整单元 7020增大该 微小区基站 7000的功率; 当该功率消息中包含该相邻的微小区基站调整自 身功率的方式是增大功率的指示时, 该调整单元 7020 减小该微小区基站 7000的功率。
根据一个实施例, 该功率消息中包含要求该微小区基站 7000按照增大 功率或减小功率的方式调整功率的命令。 当该功率消息中包含要求该微小 区基站 7000按照增大功率的方式调整功率的命令时, 该调整单元 7020增 大该微小区基站 7000的功率; 当该功率消息中包含要求该微小区基站 7000 按照减小功率的方式调整功率的命令时, 该调整单元 7020减小该微小区基 站 7000的功率。
根据一个实施例, 当该功率消息中包含该相邻的微小区基站调整自身 功率的方式是减小功率的指示时, 如果该微小区基站 7000没有收到宏基站 发来的降功率指示和 /或没有发现对移动设备有干扰, 则该调整单元 7020 增大该微小区基站 7000的功率; 当该功率消息中包含该相邻的微小区基站 调整自身功率的方式是增大功率的指示时, 如果该微小区基站 7000收到宏 基站发来的降功率指示和 /或发现对移动设备有干扰, 则该调整单元 7020 减小该微小区基站的功率。
根据一个实施例, 当该功率消息中包含要求该微小区基站 7000按照增 大功率的方式调整功率的命令时, 如果该微小区基站 7000没有收到宏基站 发来的降功率指示和 /或没有发现对移动设备有干扰, 则该调整单元 7020 增大该微小区基站 7000 的功率; 当该功率消息中包含要求该微小区基站 7000按照减小功率的方式调整功率的命令时,如果该微小区基站 7000收到 宏基站发来的降功率指示和 /或发现对移动设备有干扰, 则该调整单元 7020 减小该微小区基站 7000的功率。
图 8示出了能够实现本发明的自适应功率调整的装置 8000, 该装置可 以是既能为接入的 UE提供服务又能同时进行下行检测的微小区基站,或实 现在该微小区基站中的装置。 该微小区基站 8000装置包括检测单元 8010 , 用于进行下行检测。 例如, 在该微小区基站(例如微小区基站 2 )为接入的 UE提供服务的同时该检测单元 8010进行下行检测。该微小区基站 8000还 包括调整单元 8020, 用于当检测到相邻的微小区基站的信号变弱时, 逐步 增大该微小区基站 8000的功率, 以及当检测到相邻的微小区基站的信号变 强时, 逐步减小该微小区基站 8000的功率。 根据一个实施例 , 当检测单元 8010检测到该相邻的微小区基站的公共 导频信道信号在一定时间内变弱时, 调整单元 8020逐步增大该微小区基站 8000的功率;以及当检测单元 8010检测到该相邻的微小区基站的公共导频 信道信号在一定时间内变强时,调整单元 8020逐步减小该微小区基站 8000 的功率。
图 6A、 6B、 7和 8中的各个单元可以包括处理器、 电子设备、 硬件设 备、 电子部件、 逻辑电路、 存储器、 或其任意组合等, 或者可以用上述设 备实现。
图 9说明了根据本发明实施例的无线设备 9000, 该无线设备可以是适 用于本发明的微小区基站。
无线设备 9000包括通过总线 9500相连的各个部件,例如处理器 9300、 存储器 9100和收发机 9200。存储器 9100中可以存储数据 9110和指令 9120。 处理器 9200可以通过执行该指令 9120以及使用该数据 9110实现本发明所 公开的自适应功率调整。收发机 9200与天线 9400相连,并包含发射机 9210 和接收机 9220 , 以允许在无线设备 9000和远程设备之间发送和接收信号。 处理器 9300通过根据上述实施例中说明的功率调整方法动态调整发射机的 发送功率, 来实现微小区基站的覆盖连续性。
根据一个实施例, 微小区基站 9000包括存储器 9100和处理器 9300 , 该处理器用于当微小区基站 9000调整自身的功率时, 向相邻的微小区基站 发送功率消息例如功率调整信息传递请求消息, 以指示相邻的微小区基站 根据该功率消息来调整其自身的功率。 该处理器可选地进一步用于从相邻 的微小区基站接收响应信息例如功率调整信息传递响应消息, 该响应消息 包含相邻的微小区基站调整自身功率的方式和 /或调整量。 该处理器进一步 用于当发生以下情况中的至少一种情况时调整该微小区基站 9000自身的功 率:该微小区基站 9000收到来自宏基站的功率调整指令;该微小区基站 9000 检测到其对没有权限接入该微小区基站 9000的用户设备有干扰; 该微小区 基站 9000在下调功率一段时间后恢复功率。
根据另一个实施例,微小区基站 9000包括存储器 9100和处理器 9300, 该处理器用于: 从与微小区基站 9000相邻的微小区基站接收功率消息例如 功率调整信息传递请求消息, 其中该消息是当相邻的微小区基站调整其自 身的功率时发送给微小区基站 9000的; 根据该功率消息来调整微小区基站 9000 自身的功率。 该处理器可选地进一步用于向相邻的微小区基站发送响 应信息例如功率调整信息传递响应消息, 该响应消息包含该微小区基站 9000调整自身功率的方式和 /或调整量。 该处理器进一步用于: 当该功率消 息中包含相邻的微小区基站调整自身功率的方式是减小功率的指示时, 使 该微小区基站 9000增大自身的功率; 当该功率消息中包含相邻的微小区基 站调整自身功率的方式是增大功率的指示时, 使该微小区基站减小自身的 功率。 该处理器进一步用于: 当该功率消息中包含要求该微小区基站 9000 按照增大功率的方式调整功率的命令时, 使该微小区基站 9000增大自身的 功率; 当该功率消息中包含要求该微小区基站 9000按照减小功率的方式调 整功率的命令时, 使该微小区基站减小自身的功率。 该处理器进一步用于: 当该功率消息中包含相邻的微小区基站调整自身功率的方式是减小功率的 指示时,如果该微小区基站 9000没有收到宏基站发来的降功率指示和 /或没 有发现对移动设备有干扰, 则使该微小区基站 9000增大自身的功率; 当该 功率消息中包含相邻的微小区基站调整自身功率的方式是增大功率的指示 时,如果该微小区基站 9000收到宏基站发来的降功率指示和 /或发现对移动 设备有干扰, 则使该微小区基站 9000减小自身的功率。 该处理器进一步用 于: 当该功率消息中包含要求该微小区基站 9000按照增大功率的方式调整 功率的命令时, 如果该微小区基站 9000没有收到宏基站发来的降功率指示 和 /或没有发现对移动设备有干扰, 则使该微小区基站 9000 增大自身的功 率; 当该功率消息中包含要求该微小区基站 9000按照减小功率的方式调整 功率的命令时, 如果该微小区基站 9000 收到宏基站发来的降功率指示和 / 或发现对移动设备有干扰, 则使该微小区基站 9000减小自身的功率。
根据另一个实施例,微小区基站 9000包括存储器 9100和处理器 9300, 该处理器用于: 在该微小区基站 9000为接入的 UE提供服务的同时进行下 行检测; 如果检测到与该微小区基站 9000相邻的微小区基站信号变弱, 则 逐步增大该微小区基站 9000 自身发射功率; 如果检测到与该微小区基站 9000相邻的微小区基站信号变强,则逐步减小该微小区基站 9000自身发射 功率。 该处理器进一步用于: 当检测到相邻的微小区基站的公共导频信道 信号在一定时间内变弱时, 则逐步增大该微小区基站 9000的功率; 当检测 到相邻的微小区基站的公共导频信道信号在一定时间内变强时, 则逐步减 小该微小区基站 9000的功率。
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, 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, 在此不再赘述。
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。 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, 在本发明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釆用硬件的形式实现, 也可以釆用软 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, 本发明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)执行本发明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 4诸器 ( 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发明的技术方案, 而非对其限制; 尽管参照前述实施例对本发明进行了详细的说明, 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发明各实施例技术方案的精神和范围。

Claims

权利要求
1、 一种功率自适应调整方法, 包括:
当第一微小区基站调整自身的功率时, 第一微小区基站向相邻的第二 微小区基站发送功率消息, 以指示第二微小区基站根据所述功率消息来调 整其自身的功率。
2、 如权利要求 1所述的方法, 还包括: 第一微小区基站从第二微小区 基站接收响应消息, 该响应消息包含第二微小区基站调整功率的方式和 /或 调整量。
3、 如权利要求 1所述的方法, 其中, 当发生以下情况中的至少一种情 况时, 第一微小区基站调整其自身的功率: 第一微小区基站收到来自宏基 站的功率调整指令; 第一微小区基站检测到其对没有权限接入第一微小区 基站的用户设备有干扰; 第一微小区基站在下调功率一段时间后恢复功率。
4、 如权利要求 1所述的方法, 其中, 所述功率消息中包含: 第一微小 区基站调整自身功率的方式是减小还是增大功率的指示、 和 /或第一微小区 基站调整功率的调整量、 和 /或第一微小区基站目前的功率、 和 /或第一微小 区基站调整功率的时间。
5、 如权利要求 1所述的方法, 其中, 所述功率消息中包含: 要求第二 微小区基站按照增大功率或减小功率的方式调整功率的命令、 和 /或要求第 二微小区基站调整功率的调整量、 和 /或要求第二微小区基站调整功率的目 标功率值、 和 /或要求第二微小区基站调整功率的时间。
6、 一种微小区基站, 包括:
发送单元, 用于在该微小区基站调整自身的功率时, 向相邻的微小区 基站发送功率消息, 以指示该相邻的微 d、区基站根据所述功率消息来调整 其自身的功率。
7、 如权利要求 6所述的微小区基站, 还包括:
接收单元, 用于从该相邻的微小区基站接收响应消息, 该响应消息包 含该相邻的微小区基站调整功率的方式和 /或调整量。
8、 如权利要求 6所述的微小区基站, 还包括:
调整单元, 用于当发生以下情况中的至少一种情况时, 调整该微小区 基站的功率: 该微小区基站收到来自宏基站的功率调整指令; 该微小区基 站检测到其对没有权限接入所述微小区基站的用户设备有干扰; 该微小区 基站在下调功率一段时间后需要恢复功率。
9、 如权利要求 6所述的微小区基站, 其中, 所述功率消息中包含: 该 微小区基站调整自身功率的方式是减小还是增大功率的指示、 和 /或该微小 区基站调整功率的调整量、 和 /或该微小区基站目前的功率、 和 /或该微小区 基站调整功率的时间。
10、 如权利要求 6 所述的微小区基站, 其中, 所述功率消息中包含: 要求该相邻的微小区基站按照增大功率或减小功率的方式调整功率的命 令、 和 /或要求该相邻的微小区基站调整功率的调整量、 和 /或要求该相邻的 微小区基站调整功率的目标功率值、 和 /或要求该相邻的微小区基站调整功 率的时间。
11、 一种微小区基站, 包括:
处理器, 用于当该微小区基站调整自身的功率时, 向相邻的微小区基 站发送功率消息, 以指示该相邻的微小区基站根据所述功率消息中的功率 调整信息来调整其自身的功率;
与所述处理器相连的存储器。
12、 如权利要求 11所述的微小区基站, 其中, 所述处理器进一步用于 从该相邻的微小区基站接收响应消息, 该响应消息包含该相邻的微小区基 站调整功率的方式和 /或调整量。
13、 如权利要求 11所述的微小区基站, 其中, 所述处理器进一步用于 当发生以下情况中的至少一种情况时调整该微小区基站自身的功率: 该微 小区基站收到来自宏基站的功率调整指令; 该微小区基站检测到其对没有 权限接入该微小区基站的用户设备有干扰; 该微小区基站在下调功率一段 时间后恢复功率。
14、 如权利要求 11所述的微小区基站, 其中, 所述功率消息中包含: 该微小区基站调整自身功率的方式是减 d、还是增大功率的指示、 和 /或该微 小区基站调整功率的调整量、 和 /或该微小区基站目前的功率、 和 /或该微小 区基站调整功率的时间。
15、 如权利要求 11所述的微小区基站, 其中, 所述功率消息中包含: 要求该相邻的微小区基站按照增大功率或减小功率的方式调整功率的命 令、 和 /或要求该相邻的微小区基站调整功率的调整量、 和 /或要求该相邻的 微小区基站调整功率的目标功率值、 和 /或要求该相邻的微小区基站调整功 率的时间。
16、 一种功率自适应调整方法, 包括:
第二微小区基站从相邻的第一微小区基站接收功率消息, 其中所述功 率消息是当第一微小区基站调整其自身的功率时发送给第二微小区基站 的;
第二微小区基站根据该功率消息来调整其自身的功率。
17、 如权利要求 16所述的方法, 其中, 第二微小区基站向第一微小区 基站发送响应消息, 该响应消息包含第二微小区基站调整功率的方式和 /或 调整量。
18、 如权利要求 16所述的方法, 其中, 所述功率消息中包含: 第一微 小区基站调整自身功率的方式是减小还是增大功率的指示,
第二微小区基站根据所述功率消息来调整其自身的功率进一步包括: 当所述功率消息中包含第一微小区基站调整自身功率的方式是减小功 率的指示时, 第二微小区基站增大自身的功率;
当所述功率消息中包含第一微小区基站调整自身功率的方式是增大功 率的指示时, 第二微小区基站减小自身的功率。
19、 如权利要求 16所述的方法, 其中, 所述功率消息中包含: 要求第 二微小区基站增大功率或减小功率的命令,
第二微小区基站根据该率消息来调整其自身的功率进一步包括: 当所述功率消息中包含要求第二微小区基站增大功率的命令时, 第二 微小区基站增大自身的功率;
当所述率消息中包含要求第二微小区基站减小功率的命令时, 第二微 小区基站减小自身的功率。
20、 如权利要求 18所述的方法, 其中, 第二微小区基站根据所述功率 消息来调整其自身的功率进一步包括:
当所述功率消息中包含第一微小区基站调整自身功率的方式是减小功 率的指示时, 如果第二微小区基站没有收到宏基站发来的降功率指示和 /或 没有发现对移动设备有干扰, 则第二微小区基站增大自身的功率;
当所述功率消息中包含第一微小区基站调整自身功率的方式是增大功 率的指示时, 如果第二微小区基站收到宏基站发来的降功率指示和 /或发现 对移动设备有干扰, 第二微小区基站减小自身的功率。
21、 如权利要求 19所述的方法, 其中, 第二微小区基站根据所述功率 消息来调整其自身的功率进一步包括:
当所述功率消息中包含要求第二微小区基站增大功率的命令时, 如果 第二微小区基站没有收到宏基站发来的降功率指示和 /或没有发现对移动设 备有干扰, 则第二微小区基站增大自身的功率;
当所述功率消息中包含要求第二微小区基站减小功率的命令时, 如果 第二微小区基站收到宏基站发来的降功率指示和 /或发现对移动设备有干 扰, 则第二微小区基站减小自身的功率。
22、 如权利要求 16所述的方法, 其中, 所述功率消息中包含第一微小 区基站调整自身功率的方式是减小还是增大功率的指示、 和 /或第一微小区 基站调整功率的调整量、 和 /或第一微小区基站目前的功率、 和 /或第一微小 区基站调整功率的时间。
23、 如权利要求 16所述的方法, 其中, 所述功率消息中包含要求第二 微小区基站按照增大功率或减小功率的方式调整功率的命令、 和 /或要求第 二微小区基站调整功率的调整量、 和 /或要求第二微小区基站调整功率的目 标功率值、 和 /或要求第二微小区基站调整功率的时间。
24、 一种微小区基站, 包括: 接收单元, 用于从相邻的微小区基站接收功率消息, 其中所述功率消 息是当该相邻的微小区基站调整其自身的功率时发送给该微小区基站的; 调整单元, 用于根据所述功率消息来调整该微小区基站的功率。
25、 如权利要求 24所述的微小区基站, 还包括:
发送单元, 用于向该相邻的微小区基站发送响应消息, 该响应消息包 含该微小区基站调整功率的方式和 /或调整量。
26、 如权利要求 24所述的微小区基站, 其中, 所述功率消息中包含: 该相邻的微小区基站调整自身功率的方式是减小还是增大功率的指示, 其中, 当所述功率消息中包含该相邻的微小区基站调整自身功率的方 式是减小功率的指示时, 所述调整单元增大该微小区基站的功率;
当所述功率消息中包含该相邻的微小区基站调整自身功率的方式是增 大功率的指示时, 所述调整单元减小该微小区基站的功率。
27、 如权利要求 24所述的微小区基站, 其中, 所述功率消息中包含: 要求该微小区基站按照增大功率或减小功率的方式调整功率的命令,
其中, 当所述功率消息中包含要求该微小区基站按照增大功率的方式 调整功率的命令时, 所述调整单元增大该微小区基站的功率;
当所述功率消息中包含要求该微小区基站按照减小功率的方式调整功 率的命令时, 所述调整单元减小该微小区基站的功率。
28、 如权利要求 26所述的微小区基站, 其中, 当所述功率消息中包含 该相邻的微小区基站调整自身功率的方式是减小功率的指示时, 如果该微 小区基站没有收到宏基站发来的降功率指示和 /或没有发现对移动设备有干 扰, 则所述调整单元增大该微小区基站的功率; 当所述功率消息中包含该相邻的微小区基站调整自身功率的方式是增 大功率的指示时, 如果该微小区基站收到宏基站发来的降功率指示和 /或发 现对移动设备有干扰, 则所述调整单元减小该微小区基站的功率。
29、 如权利要求 27所述的微小区基站, 其中, 当所述功率消息中包含 要求该微小区基站按照增大功率的方式调整功率的命令时, 如果该微小区 基站没有收到宏基站发来的降功率指示和 /或没有发现对移动设备有干扰, 则所述调整单元增大该微 d、区基站的功率;
当所述功率消息中包含要求该微小区基站按照减小功率的方式调整功 率的命令时, 如果该微小区基站收到宏基站发来的降功率指示和 /或发现对 移动设备有干扰, 则所述调整单元减小该微小区基站的功率。
30、 如权利要求 24所述的微小区基站, 其中, 所述功率消息中包含: 该相邻的微小区基站调整自身功率的方式是减小还是增大功率的指示、 和 / 或该相邻的微小区基站调整功率的调整量、 和 /或该相邻的微小区基站目前 的功率、 和 /或该相邻的微小区基站调整功率的时间。
31、 如权利要求 24所述的微小区基站, 其中, 所述功率消息中包含: 要求该微小区基站按照增大功率或减小功率的方式调整功率的命令、 和 /或 要求该微小区基站调整功率的调整量、 和 /或要求该微小区基站调整功率的 目标功率值、 和 /或要求该微小区基站调整功率的时间。
32、 一种微小区基站, 包括:
处理器, 用于: 从与该微小区基站相邻的微小区基站接收功率消息, 其中该功率消息是当相邻的微小区基站调整其自身的功率时发送给该微小 区基站的; 根据该功率消息来调整该微小区基站自身的功率; 与所述处理器相连的存储器。
33、 如权利要求 32所述的微小区基站, 其中, 所述处理器进一步用于 向该相邻的微小区基站发送响应消息, 该响应消息包含该微小区基站调整 功率的方式和 /或调整量。
34、 如权利要求 32所述的微小区基站, 其中, 所述功率消息中包含: 该相邻的微小区基站调整自身功率的方式是减小还是增大功率的指示, 其中, 所述处理器进一步用于:
当所述功率消息中包含该相邻的微小区基站调整自身功率的方式是减 小功率的指示时, 使该微小区基站增大自身的功率;
当所述功率消息中包含该相邻的微小区基站调整自身功率的方式是增 大功率的指示时, 使该微小区基站减小自身的功率。
35、 如权利要求 32所述的微小区基站, 其中, 所述功率消息中包含: 要求该微小区基站按照增大功率或减小功率的方式调整功率的命令,
其中, 所述处理器进一步用于:
当所述功率消息中包含要求该微小区基站按照增大功率的方式调整功 率的命令时, 使该微小区基站增大自身的功率;
当所述功率消息中包含要求该微小区基站按照减小功率的方式调整功 率的命令时, 使该微小区基站减小自身的功率。
36、如权利要求 34所述的微小区基站, 其中, 所述处理器进一步用于: 当所述功率消息中包含该相邻的微小区基站调整自身功率的方式是减 小功率的指示时, 如果该微小区基站没有收到宏基站发来的降功率指示和 / 或没有发现对移动设备有干扰, 则使该微小区基站增大自身的功率; 当所述功率消息中包含该相邻的微小区基站调整自身功率的方式是增 大功率的指示时, 如果该微小区基站收到宏基站发来的降功率指示和 /或发 现对移动设备有干扰, 则使该微小区基站减小自身的功率。
37、如权利要求 35所述的微小区基站, 其中, 所述处理器进一步用于: 当所述功率消息中包含要求该微小区基站按照增大功率的方式调整功 率的命令时, 如果该微小区基站没有收到宏基站发来的降功率指示和 /或没 有发现对移动设备有干扰, 则使该微小区基站增大自身的功率;
当所述功率消息中包含要求该微小区基站按照减小功率的方式调整功 率的命令时, 如果该微小区基站收到宏基站发来的降功率指示和 /或发现对 移动设备有干扰, 则使该微小区基站减小自身的功率。
38、 如权利要求 32所述的微小区基站, 其中, 所述功率消息中包含: 该相邻的微小区基站调整自身功率的方式是减小还是增大功率的指示、 和 / 或该相邻的微小区基站调整功率的调整量、 和 /或该相邻的微小区基站目前 的功率、 和 /或该相邻的微小区基站调整功率的时间。
39、 如权利要求 32所述的微小区基站, 其中, 所述功率消息中包含: 要求该微小区基站按照增大功率或减小功率的方式调整功率的命令、 和 /或 要求该微小区基站调整功率的调整量、 和 /或要求该微小区基站调整功率的 目标功率值、 和 /或要求该微小区基站调整功率的时间。
40、 一种微小区基站, 包括:
存储器, 用于存储指令;
处理器,用于执行该指令,以使得该微小区基站能够执行权利要求 1-5、 16-23中任意一个权利要求所述的方法。
41、 一种机器可读介质, 其中存储指令, 当机器执行该指令时, 使得 该机器能够执行权利要求 1-5、 16-23中任意一个权利要求所述的方法。
42、 一种计算机程序, 该计算机程序用于执行权利要求 1-5、 16-23中任 意一个权利要求所述的方法。
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