WO2013097699A1 - 在无线通信系统中执行节能的基站及方法 - Google Patents

在无线通信系统中执行节能的基站及方法 Download PDF

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Publication number
WO2013097699A1
WO2013097699A1 PCT/CN2012/087401 CN2012087401W WO2013097699A1 WO 2013097699 A1 WO2013097699 A1 WO 2013097699A1 CN 2012087401 W CN2012087401 W CN 2012087401W WO 2013097699 A1 WO2013097699 A1 WO 2013097699A1
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Prior art keywords
cell
base station
abs
information
message
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PCT/CN2012/087401
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English (en)
French (fr)
Inventor
汤斌淞
邓天乐
孙彦赞
罗海燕
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华为技术有限公司
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Publication of WO2013097699A1 publication Critical patent/WO2013097699A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24Cell structures
    • H04W16/32Hierarchical cell structures
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0203Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • 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
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • Base station and method for performing energy saving in a wireless communication system The present application claims to be submitted to the Chinese Patent Office on December 28, 2011, the application number is CN 201110447897.9, and the invention is entitled “Base station and method for performing energy saving in a wireless communication system," Chinese patent application, and the priority of the Chinese patent application filed on March 20, 2012, the Chinese Patent Office, Application No. CN 201210074797.0, entitled “Base Station and Method for Implementing Energy Saving in Wireless Communication Systems", the entire contents of which are incorporated herein by reference. This is incorporated herein by reference.
  • Embodiments of the present invention relate to the field of wireless communications and, more particularly, to methods and systems for achieving energy savings in a wireless communication network. Background technique
  • Wireless communication systems generally provide wireless services such as voice and data.
  • a typical wireless communication system is, for example, Frequency-Division Multiple Access (FDMA), Time Division Multiple Address (TDMA), Code Division Multiple Access (CDMA), Orthogonal Frequency Division. Orthogonal Frequency Division Multiplexing (OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single-Carrier Frequency Division Multiple Access (SC-FDMA), etc.
  • FDMA Frequency-Division Multiple Access
  • TDMA Time Division Multiple Address
  • CDMA Code Division Multiple Access
  • OFDM Orthogonal Frequency Division Multiplexing
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-Carrier Frequency Division Multiple Access
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • a homogeneous network for example, a low power base station (LPN) or a transmit/receive node, a macro BS (Micro BS), and a micro BS (Pico BS), Home BS (Home BS), Nano BS (Femto BS), Relay BS (Remote BS), Remote Radio Head (RRH), etc.
  • a large transmit power base station such as a macro base station, a macro evolved Node B (MeNB)
  • a macro base station such as a macro base station, a macro evolved Node B (MeNB)
  • MeNB macro evolved Node B
  • a large transmit power base station can be deployed in a heterogeneous network at the same time, and the same standard is used with the MeNB but different types of LPNs are used.
  • the LPN configurable uplink and/or downlink spectrum resources can be completely or partially multiplexed with the MeNB configurable uplink and/or downlink frequency resources.
  • the same channel is generated between the LPN (or the UE served by the LPN) and the downlink (or uplink) channel transmission of the MeNB (or the UE served by the MeNB). (or co-frequency) interference. Interference can affect the reliability of LPN and MeNB downlink channel transmission and uplink channel detection.
  • the Inter-Cell Interference Coordination (elCIC) method is used in the LTE-A standard to handle inter-cell interference in heterogeneous networks.
  • the interfering base station sets some subframes to low transmission power or does not perform traffic transmission (that is, the transmission power of the service is zero), and the foregoing subframe is called an almost empty subframe.
  • the interfered base station schedules the UE that is interfered by the interfering base station to transmit to the subframe corresponding to the ABS subframe configured by the interfering base station, so as to ensure the transmission performance of the UE affected by the interfering base station.
  • the interfering base station and the interfered base station do not coordinate the transmission power on the ABS subframe, when the interfering base station sets the transmission power on the ABS subframe to be low, there may be almost no UE capable of being scheduled by the interfering base station in the ABS. Traffic is transmitted on the subframe, thereby reducing the available transmission resources.
  • the interfering base station schedules the ABS subframe to its own UE to increase the transmission resource, it may cause strong interference to the UE of the interfered base station due to the inappropriate setting of the transmission power on the ABS subframe. .
  • An energy-saving technology based on cell shutdown is proposed.
  • the utility model is characterized in that the UE of the low-traffic cell is diverted to other neighboring cells by turning off the low-traffic cell during the off-peak period, thereby achieving the purpose of turning off the energy saving of the original cell.
  • the embodiments of the present invention provide a base station and a method for performing energy saving in a wireless communication system, which can ensure the continuity of services when the energy-saving cell is turned off, and further improve the effect of elCIC to reduce interference.
  • An aspect of the present invention provides a method for performing power saving in a wireless communication system, where the wireless communication system includes a first base station and a second base station, the first base station includes a first cell, and the second base station includes a a second cell, the method includes: the first base station sends a first message to the second base station to notify the first cell that a power saving mode is to be entered; and the first base station is configured to use the second base station Receiving a first response message for the first message; when determining that all user equipment UEs of the first cell are absorbed into the second cell, the first base station sets the first cell to a power saving mode
  • the first response message includes information of the first almost empty subframe ABS configured by the second base station, where the information of the first ABS is used for the UE of the first cell to be scheduled to The communication is performed on the subframe corresponding to the first ABS.
  • a base station that performs power saving in a wireless communication system
  • the wireless communication system further includes a second base station
  • the base station includes a first cell
  • the second base station includes a second cell
  • the base station includes: a sending unit, configured to send, by the control unit, a first message to the second base station to notify the first cell to enter a power saving mode; and a receiving unit, configured to be used by the control unit Receiving, by the second base station, a first response message for the first message, where the control unit is configured to: when determining that all user equipment UEs of the first cell are absorbed into the second cell, Setting the first cell to a power saving mode, where the first response message includes information of a first almost empty subframe ABS configured by the second base station, where information of the first ABS is used for the first
  • the UE of a cell is scheduled to communicate on a subframe corresponding to the first ABS.
  • a still another aspect of the present invention provides a method for performing power saving in a wireless communication system, where the wireless communication system includes a first base station and a second base station, the first base station includes a first cell, and the second base station includes a second cell, the method includes: the second base station receives a first message from the first base station, where the first message is used to notify that the first cell enters a power saving mode; The second base station adjusts the power parameter of the second cell, so that all user equipments of the first cell are absorbed by the second cell; and the second base station sends the first message to the first base station.
  • the first response message where the first response message includes information of the first almost empty subframe ABS configured by the second base station, where the information of the first ABS is used by the UE of the first cell Scheduling to communicate on a subframe corresponding to the first ABS.
  • Still another aspect of the present invention provides a base station that performs power saving in a wireless communication system, the wireless communication system further including a first base station, the first base station includes a first cell, and the base station device includes a second cell
  • the base station includes: a receiving unit, configured to receive, by the control unit, a first message from the first base station, where the first message is used to notify that the first cell enters a power saving mode;
  • the control unit is configured to adjust a power parameter of the second cell, so that all user equipments of the first cell are absorbed by the second cell;
  • a sending unit configured to send, by the control unit, a first response message to the first message to the first base station, where the first response message includes a first almost empty space configured by the base station
  • the information of the frame ABS wherein the information of the first ABS is used for the UE of the first cell to be scheduled to communicate on a subframe corresponding to the first ABS.
  • Still another aspect of the present invention provides a method of power saving in a wireless communication system, the wireless communication system including a first base station and a second base station, the first base station including a first cell, and the second base station including a The second cell, the method includes: the first base station sends a first message to the second base station, where the first message informs that the first cell enters a power saving mode and specifies the second cell And the first base station sends a second message to the second base station, where the second message includes information of a first almost empty subframe ABS, where the first ABS is The information is used by the UE of the first cell to be scheduled to communicate with the subframe corresponding to the first ABS; when it is determined that all user equipments of the first cell are absorbed by the second cell, The first base station sets the first cell to a power saving mode.
  • Still another aspect of the present invention provides a method of power saving in a wireless communication system, the wireless communication system including a first base station and a second base station, the first base station including a first cell, and the second base station including a a second cell, the method includes: the second base station receives a first message from the first base station, where the first message is used to notify that the first cell enters a power saving mode and specifies the The second cell is a cell that absorbs the UE of the first cell; the second base station receives a second message from the first base station, where the second message includes information of a first almost empty subframe ABS, where the first The information of the ABS is used for the UE of the first cell to be scheduled to communicate with the subframe corresponding to the first ABS; the second base station adjusts the power parameter of the second cell, so that the first All user equipment UEs of the cell are absorbed into the second cell.
  • Still another aspect of the present invention provides a method for performing power saving in a wireless communication system, the wireless communication system including a first base station and a second base station, where the first base station includes a first cell, The second base station includes a second cell, where the method includes: the first base station sends a first message to the second base station to notify the first cell to enter a power saving mode; The base station sends a second message to the second base station, where the second message includes information of the first almost empty subframe ABS configured by the first base station, where the information of the first ABS is used for the second cell
  • the UE is scheduled to communicate with the subframe corresponding to the first ABS; when it is determined that the user equipment UE of the first cell is absorbed into the second cell, the first base station will be the first The cell is set to the energy saving mode.
  • Still another aspect of the present invention provides a base station that performs power saving in a wireless communication system, the wireless communication system further including a second base station, the base station includes a first cell, and the second base station includes a second cell,
  • the base station includes: a sending unit, configured to send, by the control unit, a first message and a second message to the second base station, where the first message is used to notify the first cell that Entering the power-saving mode, the second message includes information of the first almost empty subframe ABS configured by the control unit, where the information of the first ABS is used by the UE of the second cell to be scheduled to Communicating on a subframe corresponding to an ABS; and the control unit, configured to configure ABS information, and when determining that the user equipment UE of the first cell is absorbed into the second cell, the first cell Set to energy saving mode.
  • Still another aspect of the present invention provides a method of performing power saving in a wireless communication system, the wireless communication system including a first base station and a second base station, the first base station including a first cell, and the second base station includes a second cell, the method includes: the second base station receives a first message from the first base station, where the first message is used to notify that the first cell enters a power saving mode; The second base station receives the second message from the first base station, where the second message includes the information of the first almost empty subframe ABS configured by the first base station, where the information of the first ABS is used for the second The UE of the cell is scheduled to communicate with the subframe corresponding to the first ABS; the second base station enables the user equipment UE of the first cell to be absorbed by the second cell.
  • Still another aspect of the present invention provides a base station for performing energy saving in a wireless communication system
  • the wireless communication system further includes a first base station, the first base station includes a first cell, and the base station includes a second cell, where the base station includes: a receiving unit, configured to receive from the control unit
  • the first base station receives the first message and the second message, where the first message is used to notify that the first cell will enter a power saving mode, and the second message includes a first almost empty space configured by the first base station Information of the frame ABS, the information of the first ABS is used for the UE of the second cell to be scheduled to communicate with the subframe corresponding to the first ABS;
  • the control unit is configured to enable the first All user equipment UEs of the cell are absorbed by the second cell.
  • FIGS. 1 to 3 are diagrams showing a general process of implementing ABS sub-frame staggering in a wireless communication system according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of an operational sequence for performing power saving in a wireless communication system according to a first embodiment of the present invention
  • Figure 5 is a schematic diagram of an operational procedure for performing power saving in a wireless communication system in accordance with a second embodiment of the present invention
  • FIG. 6 is a schematic diagram of an operational sequence for performing power saving in a wireless communication system according to a third embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a sequence of operations for performing power saving in a wireless communication system according to a fourth embodiment of the present invention
  • FIG. 8 is a schematic diagram of a sequence of operations for performing power saving in a wireless communication system according to a fifth embodiment of the present invention
  • FIG. 7 is a schematic diagram of a sequence of operations for performing power saving in a wireless communication system according to a fourth embodiment of the present invention
  • FIG. 8 is a schematic diagram of a sequence of operations for performing power saving in a wireless communication system according to a fifth embodiment of the present invention
  • FIG. 9 is a schematic diagram of an operational sequence for performing power saving in a wireless communication system according to a sixth embodiment of the present invention.
  • FIG. 10 is a schematic diagram of an operation sequence for performing power saving in a wireless communication system according to a seventh embodiment of the present invention.
  • FIG. 11 is a schematic diagram of an operation sequence for performing power saving in a wireless communication system according to an eighth embodiment of the present invention.
  • Figure 12 is a diagram showing an operation sequence for performing power saving in a wireless communication system according to a ninth embodiment of the present invention.
  • FIG. 13 is a block diagram of a base station performing energy saving in a wireless communication system in accordance with an embodiment of the present invention. detailed description
  • the wireless communication system 200 includes seven base stations A ⁇ F. However, those skilled in the art will appreciate that the present invention is not limited thereto, that is, the wireless communication system 200 may include more or fewer base stations.
  • a cell covered by a base station B to G is a low-loaded area designated to enter a power saving mode (hereinafter referred to as an energy-saving cell), and a cell covered by the base station A (hereinafter referred to as a non-energy-saving cell) absorbs a base station.
  • ABS subframes are staggered between cell pairs and 8, and, A and D, A and E, A and F, and A and G, respectively, that is, in one cell.
  • the ABS subframe will be staggered between the two cells in the pair.
  • the frequency band (Radio Band, RB) in the frequency domain may be shifted between the cell pairs.
  • Fig. 3 is a schematic view showing the result after the implementation of the ABS shift.
  • the coverage area of the non-energy-saving cell (cell A in FIG. 1) can be adjusted before the implementation of the ABS subframe is shifted, which can be achieved by adjusting the transmission power and the tilt angle of the base station A, and can also adjust the cell individual of the base station A.
  • the Cell Individual Offset (CIO) parameter is implemented.
  • it is not necessary to adjust the coverage of the non-energy-saving cell before implementing the ABS staggering for example, according to the network plan, if there is no between the cells E, D, C, B and G If the vulnerability is covered, the coverage area of the cell A may not be adjusted, that is, the transmission power, the tilt angle, or the CIO parameter of the base station A need not be adjusted.
  • the UE in the energy-saving cell is driven to be absorbed into the non-energy-saving cell.
  • the activated UE in the energy-saving cell is switched to the non-energy-saving cell to ensure continuity of the service.
  • the method may further include selecting, selecting, or reselecting, the idle UE in the energy-saving cell to the non-energy-saving cell.
  • the system is under light load
  • the activated UEs in the energy-saving cells B, C, D, E, F, and G are switched to the non-energy-saving cells A, which can be implemented by changing the CIO parameters of the base station A.
  • an OAM (Operation, Administration and Maintenance) device (not shown) instructs the base station A to change CIO parameters.
  • the base station A can actively change the CIO parameters by itself. In the example shown in FIG.
  • the activated UEs in the energy-saving cells ⁇ C, D, E, F, and G are switched to the non-energy-saving cells A, thereby implementing the energy-saving cells B, C, D, E, F, and G.
  • Business uninstallation it is also possible to set a difference Q between received signal qualities between the energy-saving cells B, C, D, E, F, and G and the non-energy-saving cells A.
  • the ffset is such that idle UE cells in the energy-saving cells B, C, D, E, F, and G are selected/reselected to the non-energy-saving cell A.
  • the energy-saving cells B, C, D, E, F, and G are set to enter the energy-saving mode, for example, by turning off the base stations B, C, D, E, F and G are implemented.
  • the present invention is not limited thereto, and the energy-saving cell may be put into the energy-saving mode by other means.
  • FIGS. 4 is a schematic diagram of an operational sequence of a process 400 for performing power saving in a wireless communication system in accordance with a first embodiment of the present invention.
  • Mi denotes a macro base station or a macro cell, which represents a micro base station or a micro cell, where i is a natural number, and here, for convenience of explanation, the base station and the cell are not distinguished. Further, it is assumed that the micro cell P1 is covered by the macro cell M2. It should be understood by those skilled in the art that, for convenience of description, the micro base stations P1 in the cells of the macro base stations M1 to M3 and M2 are shown in FIGS. 4-8 below, but the present invention is not limited thereto, for example, the wireless communication system may More or less macro base stations are included, and the cells of M1 and M3 may also include micro base stations, or the cells of M1 to M3 do not include micro base stations.
  • the OAM device sends an ES_Start message to the macro base station M2 to indicate that the cell M2 will enter a power saving mode, wherein the ES_Start message specifies M2 as the energy saving cell.
  • the macro base station M2 may also determine whether the cell will enter the energy-saving mode. For example, when M2 determines that the traffic in the cell is small and can enter the energy-saving mode, the M2 specifies its own cell as the energy-saving cell. Station M2 informs the OAM device that its cell will enter a power save mode.
  • M2 sends an ES_Start_To_Neigh message to its neighboring base station (e.g., macro base station M3, micro base station P1) to notify cell M2 that it will enter a power saving mode, that is, notify it The neighboring macro cell starts to absorb the UE in the macro cell M2.
  • its neighboring base station e.g., macro base station M3, micro base station P1
  • the first response message includes a first ABS allocated by M1 (eg, subframes 1, 3, 5 Information that the information of the first ABS is used for the UE of the micro cell P1 to be scheduled to communicate with the subframe corresponding to the first ABS, and the second response message includes the second ABS allocated by the M1 ( For example, the information of the sixth and seventh subframes, the information of the second ABS is used for the UE of the macro cell M2 to be scheduled to communicate on the subframe corresponding to the second ABS.
  • M1 includes a first ABS allocated by M1 (eg, subframes 1, 3, 5 Information that the information of the first ABS is used for the UE of the micro cell P1 to be scheduled to communicate with the subframe corresponding to the first ABS
  • the second response message includes the second ABS allocated by the M1 ( For example, the information of the sixth and seventh subframes, the information of the second ABS is used for the UE of the macro cell M2 to be scheduled to communicate on the subframe corresponding to the second ABS.
  • the embodiment of the present invention is described as sending a first response message (ie, a response message including ABS information used by a cell of a micro cell allocated by the M1), and then transmitting a second response message after delaying a predetermined time (ie, The response message of the ABS information used by the UE of the macro cell M2 is allocated by the M1.
  • the M1 may also send the second response message (that is, the macro cell M2 including the M1 allocation).
  • the response message of the ABS information used by the UE sends a first response message (ie, a response message including the ABS information used by the UE of the micro cell allocated by the M1) after the predetermined time delay.
  • M2 when receiving the first response message, M2 forwards the information of the first ABS used by the UE of the micro cell P1 allocated by the M1 included in the first response message to the neighboring base station.
  • the OAM device sends a CIO_Change_For_HO message to M1 to instruct the macro base station M1 to change the CIO parameters, thereby logically expanding the coverage of M1 to drive the activated UE in the energy-saving cell M2 to switch to the macro cell M1.
  • the CIO parameter may be directly changed by M1 without requiring an indication of the OAM device.
  • the OAM device may also instruct M2 to set M1 and M2. The difference between the received signal qualities is Q. Ffset to cause the idle UE cell in M2 to select/reselect to the non-energy-saving cell A.
  • M2 when all UEs in M2 are absorbed into the macro cell M1, M2 notifies the OAM device that all UEs in M2 have been absorbed into the macro cell M1 and can enter a power saving mode (not shown in FIG. 4), OAM After receiving the notification, the device sends a Switch_Off message to M2. Instructing M2 to set its cell to a power save mode, M2 can set its cell to a power save mode in various ways, for example, base station M2 can be turned off. In addition, M2 can also directly set the energy saving mode without notification from the OAM device.
  • Figure 5 is a schematic diagram of an operational sequence of a process 500 for performing power saving in a wireless communication system in accordance with a second embodiment of the present invention.
  • 510, 520-1-520-3, 550 and 560 in Fig. 5 are the same as 410, 420-1-420-3, 450 and 460 in Fig. 4, respectively, and therefore will not be described again.
  • the M1 when the base station M1 receives the ES_Start_To_Neigh message, the M1 sends a first response message to the M2, where the first response message includes the first ABS allocated by M1 (for example, Information of the first, third, and fifth subframes and information of the second ABS (for example, the sixth and seventh subframes) allocated by M1, and the information of the first ABS is used for the UE of the micro cell P1 to be scheduled to The subframes corresponding to the first ABS are used for communication, and the information of the second ABS is used by the UE of the macro cell M2 to be scheduled to communicate with the subframe corresponding to the second ABS.
  • M1 for example, Information of the first, third, and fifth subframes and information of the second ABS (for example, the sixth and seventh subframes) allocated by M1
  • the information of the first ABS is used for the UE of the micro cell P1 to be scheduled to
  • the subframes corresponding to the first ABS are used for communication
  • the information of the second ABS is used
  • the information of the first ABS and the information of the second ABS are indication information in the form of a bitmap.
  • the indication information in the form of a bitmap may be a table such as [P, P, P, M, M][1, 3, 5, 6, 7], where the 'P' in the preceding parenthesis The subframe indicated by the frame number at the corresponding position in the latter parenthesis is used for the UE of the micro cell, and the 'M of the preceding parenthesis indicates that the subframe indicated by the frame number at the corresponding position in the latter parenthesis is used for UE of the macro cell.
  • the indication information in the form of a bitmap may be a string such as [11100] [1010111000], wherein ' ⁇ in the preceding parenthesis indicates that the subframe indicated by the corresponding position in the latter parenthesis is used for the micro cell UE, the '0' in the preceding parenthesis indicates that the subframe indicated by the corresponding position in the latter parenthesis is used for the UE of the macro cell, and the ⁇ in the latter parenthesis indicates that the subframe indicated by its position can be used as the ABS.
  • Subframe in this example, the ABS subframe is the first, third, fifth, sixth, and seventh subframes, and the first, third, and fifth subframes are used for the micro cell, and the sixth and seventh subframes are used for the macro cell. .
  • ⁇ 2 when receiving the first response message, ⁇ 2 forwards the information of the first ABS used by the UE of the micro cell PI allocated by the M1 included in the first response message to the micro base station P1.
  • FIG. 6 is a process of performing energy saving in a wireless communication system according to a third embodiment of the present invention.
  • M2 sends an ES_Start_To_Neigh message to its neighboring base stations (eg, M1 and M3) to inform M2 that it will enter a power saving mode, wherein the ES_Start – The To-Neigh message indicates that there is no cell specifying the UE that is absorbing M2.
  • M1 when receiving the ES_Start_To_Neigh message, M1 sends a first response message to M2, where the first response message includes a power saving indicator and information of an ABS allocated by M1, where the power saving indication The sign indicates that M1 is the cell of the UE that absorbs M2.
  • M2 when receiving the first corresponding message, M2 randomly assigns ABS ⁇ 1, 3, 5, 6, 7 ⁇ included in the first response message to macro cell M2 and micro cell P1, for example
  • the first, third, and fifth subframes are allocated to the micro cell P1, and the sixth and seventh sub-frames are allocated to the macro cell M2.
  • the embodiment of the present invention is not limited thereto, that is, multiple neighboring cells may have ES-Start_To-Neigh messages.
  • the response is acknowledged, and M2 may use the ABS subframe in the response message of the first response, or may use the ABS subframe in the response message of all the responses.
  • FIG. 7 is a process of performing energy saving in a wireless communication system according to a fourth embodiment of the present invention.
  • M2 sends an ES_Start_To_Neigh message to one of the neighboring cells (eg, M1) to notify M2 that the power saving mode is entered, wherein the ES_Start_To_Neigh message indicates M1 is a cell that accommodates the M2 UE.
  • M1 when receiving the ES_Start_To_Neigh message, M1 sends a first response message to M2, where the first response message includes information of a normal ABS.
  • M2 when receiving the first response message, M2 randomly assigns ABS ⁇ 1, 3, 5, 6, 7 ⁇ included in the first response message to macro cell M2 and micro cell P1, for example
  • the first, third, and fifth subframes are allocated to the micro cell P1
  • the sixth and seventh sub-frames are allocated to the macro cell.
  • M1 is shown to respond to the ES_Start_To_Neigh message, however, this The embodiment of the invention is not limited thereto, that is, M1 may reject the ES_Start_To_Neigh message, that is, reject the cell as the UE in the M1, which may send a reject message to M2, or may not send any message. At this time, when M2 receives the reject message or M2 does not receive the ABS message after a predetermined time, M2 may send the ES_Start_To_Neigh message to another neighboring base station (for example, M3).
  • M3 another neighboring base station
  • Figure 8 is a diagram showing an operational sequence of a process 800 for performing power saving in a wireless communication system in accordance with a fifth embodiment of the present invention.
  • 810, 850, and 860 in Fig. 8 are the same as 410, 450, and 460 in Fig. 4, respectively, and therefore will not be described again.
  • M2 sends an ES_Start_To_Neigh message to one of the neighboring cells (eg, M1) to notify M2 that the power saving mode is entered, wherein the ES_Start_To_Neigh message indicates M1 is a cell that accommodates the M2 UE.
  • the M2 sends the information of the ABS to the M1, where the information of the ABS includes the information of the first ABS and the information of the second ABS, where the information of the first ABS is used by the UE for the micro cell P1 to be scheduled to The communication is performed on the subframe corresponding to the ABS, and the information of the second ABS is used for the UE of the macro cell M2 to be scheduled to communicate with the subframe corresponding to the second ABS.
  • the non-energy-saving cell (hereinafter also referred to as the absorption cell) is an interference source (for example, when the coverage of the absorption cell is expanded by adjusting the power and inclination of the absorption cell), the energy-saving cell is a victim, which This is because the larger power absorption cell extension completely covers the energy-saving cell, thereby causing interference to the energy-saving cell. Therefore, in this case, the cell needs to be absorbed to configure the ABS, and the UE of the energy-saving cell is scheduled to be configured with the absorption cell. The communication is performed on the subframe corresponding to the ABS.
  • the path loss of the absorption cell is increased due to the expansion of the coverage of the absorption cell, but the power is unchanged, so The path loss of the absorption cell is much larger than the path loss of the energy-saving cell.
  • the energy-saving cell becomes the interference source, and the absorption cell becomes the interferer. Therefore, in this case, the energy-saving cell needs to be configured to configure the ABS. Suck The UE of the nano cell is scheduled to communicate with the subframe corresponding to the ABS configured by the energy saving cell. 9 to 12 describe operations for performing power saving in a wireless communication system when an ABS is configured in an energy-saving cell.
  • the wireless communication system includes OAM, macro cells M1, M2, and M3, and a micro cell PI, where PI It is covered by the macro cell M2.
  • OAM OAM
  • macro cells M1, M2, and M3 a micro cell PI
  • PI PI It is covered by the macro cell M2.
  • the configurations of the wireless communication system in FIGS. 9 to 12 are merely illustrative of the present invention, and the present invention is not limited thereto.
  • the micro cell P1 may also be small in size. Macro cell.
  • Figure 9 is a diagram showing an operational sequence for performing power saving in a wireless communication system in accordance with a sixth embodiment of the present invention.
  • 910, 920-1, 920-2, 920-3, 950, and 960 in FIG. 9 are the same as 410, 420-1, 420-2, 420-3, 450, and 460 in FIG. 4, respectively, and therefore are not here. Let me repeat.
  • M2 sends a first indication information to M1 indicating that the first ABS is unavailable for M1, for example, ABS ⁇ 1, 3, 5 ⁇ , that is, M2 notifies M1 for M1.
  • the first ABS indicated by the first indication information is unavailable.
  • the first indication information may also indicate the first ABS available for P1 of M2, in which case M2 is notified to M1 that the first ABS is available for P1 of M2 and the first ABS is not available for M1.
  • M2 sends a second indication message to P1 indicating a second ABS, such as ABS ⁇ 1, 3, 5 ⁇ , ie, the notification PI can use the second ABS indicated by the second indication information.
  • M2 sends a third indication message to M1 indicating the third ABS, eg, ABS ⁇ 6, 7 ⁇ , thereby notifying M1 that the third ABS can be used.
  • M1 indicating the third ABS
  • M2 may pass a The message notifies M1 of the available and unavailable ABS, that is, the first indication information and the third indication information are combined into one indication information.
  • the indication information may Indicates information in the form of a bitmap.
  • the indication information in the form of a bitmap may be a table as follows: [ ⁇ , ⁇ , ⁇ , ⁇ , ⁇ ] [1, 3, 5, 6, 7], wherein the ABS corresponding to ⁇ is not available for Ml, The ABS corresponding to M can be used for M1. Skill The person skilled in the art can understand that the above indication information can be sent from M2 to P1 or M1 in an implicit manner or an explicit manner.
  • the implicit mode may be two-stage information transmission, such as the first indication information sent by M2 to M1 in the 930-1 of the embodiment, and the third indication information sent by M2 to M1 in 930-2. Since M2 transmits two messages to M1, it implies that the content indicated by the above two messages is different.
  • the explicit mode can be a bit chart format, such as the table in the second embodiment
  • Figure 10 is a diagram showing an operation sequence for performing power saving in a wireless communication system according to a seventh embodiment of the present invention.
  • 1010, 1020-1, 1020-2, 1020-3, 1050, and 1060 in Fig. 10 are the same as 510, 520-1, 520-2, 520-3, 550, and 560 in Fig. 5, respectively, so Let me repeat.
  • ⁇ 2 sends an indication information indicating the ABS in the form of a bitmap to M1.
  • the indication information in the form of a bitmap may be a table as follows: [ ⁇ , ⁇ , ⁇ , ⁇ , ⁇ ] [1] , 3, 5, 6, 7], wherein the ABS corresponding to ⁇ is not available for M1, and the ABS corresponding to M can be used for M1.
  • the indication information indicating the ABS in the form of a bitmap indicates ABS ⁇ 1, 3,5 ⁇ is not available for Ml, and ABS ⁇ 6,7 ⁇ is available.
  • M2 sends a second indication message to P1, which notifies the ABS that P1 can use, for example, ABS ⁇ 1, 3, 5 ⁇ .
  • 11 and 12 are diagrams showing a sequence of operations for performing power saving in a wireless communication system according to eighth and ninth embodiments of the present invention.
  • 1110, 1120-1, 1120-2, 1150, and 1160 in Fig. 11 are the same as 610, 620-1, 620-2, 650, and 660 in Fig. 6, respectively, and 1210, 1220-1, 1220 in Fig. 12, respectively.
  • 2, 1250 and 1260 are the same as 610, 620-1, 620-2, 650 and 660 in Fig. 6, respectively, and therefore will not be described again.
  • M2 sends a first indication information to M1, which indicates a first ABS configured by M2, for example, ABS ⁇ 1, 3, 5, 6, 7 ⁇ , that is, M2 notifies M1, and M1 can use M2.
  • M1 selects an ABS for M1 from the first ABS after receiving the first indication information, for example, M1 selects ABS ⁇ 6, 7 ⁇ , and at 1140, P1 covers M2.
  • Sending the second indication information, indicating that the second ABS, the notification P1 can use the second ABS, For example, ABS ⁇ 1, 3, 5 ⁇ , where the second ABS is an ABS selected by the M1 from the first ABS, for example, the first ABS may be M1 to select an ABS for the M1 from the first ABS.
  • M1 directly sends the second indication information to P1.
  • M1 directly sends the second indication information to P1 through the X2 interface.
  • Ml cannot directly send the second indication information to the PI, in which case Ml first sends the second indication information to M2, and then M2 then sends the second indication information to P1.
  • M1 sends the second indication information to M2, and then at 1240-2, M2 sends the second indication information to P1.
  • a base station for performing power saving in a wireless communication system is explained below.
  • Figure 13 illustrates a base station for performing power saving in a wireless communication system in accordance with an embodiment of the present invention.
  • the base station 1300 includes a transmitting unit 1301, a receiving unit 1302, and a controller 1303.
  • the control unit 1303 may be a processor or processor array implemented to control the overall operation of the base station 1300.
  • the transmitting unit 1301 may be implemented as a transmitting circuit that transmits a control signal and a data signal to an external device by wire or wirelessly
  • the receiving unit 1302 may be implemented as a receiving circuit that receives a control signal and a data signal from an external device by wire or wirelessly.
  • the transmitting unit 1301 and the receiving unit 1302 are shown as separate components, but the embodiment of the present invention is not limited thereto, and the transmitting unit 1301 and the receiving unit 1302 may be integrated into a single component.
  • the base station in the wireless communication system shown in Fig. 13 can perform the operations as described above with reference to Figs.
  • the wireless communication system further includes a second base station, the base station includes a first cell, the second base station includes a second cell, and the sending unit is controlled by the control unit
  • the second base station sends a first message to notify that the first cell will enter energy saving Mode.
  • the receiving unit receives a first response message for the first message from the second base station under the control of the control unit.
  • the first cell When the determining, by the control unit, that all the user equipments of the first cell are absorbed by the second cell, the first cell is set to a power saving mode, where the first response message includes the second The information of the first almost empty subframe ABS configured by the base station, where the information of the first ABS is used for the UE of the first cell to be scheduled to communicate with the subframe corresponding to the first ABS.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, where the first cell and the second cell are macro cells, and the third cell It is a micro cell and is covered by the first cell.
  • the receiving unit further receives a second response message for the first message from the second base station, where the second response message includes information of a second ABS configured by the second base station.
  • the sending unit sends the information of the second ABS to the third cell, where the information of the second ABS is used by the UE of the third cell to be scheduled to a subframe corresponding to the second ABS. Communicate.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the third cell is The micro cell is covered by the first cell.
  • the first response message further includes information about a second ABS configured by the second base station, where information of the second ABS is used for a UE of the third cell to be scheduled to a subframe corresponding to the second ABS.
  • the information of the first ABS and the information of the second ABS are indication information in the form of a bitmap, and are used to indicate the ABS and the third cell used by the UE of the first cell. The ABS used.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the third cell is The micro cell is covered by the first cell.
  • the first response message further includes information about a second ABS configured by the second base station, where information of the second ABS is used for a UE of the third cell to be scheduled to a subframe corresponding to the second ABS. Communicate on. Transmitting, by the sending unit, information about the second ABS to the third cell, where the first cell uses the first The ABS and the ABS used by the second cell are randomly allocated by the base station.
  • the first response message further includes a power saving indicator, where the energy saving indicator is used to indicate that the second cell absorbs the UE of a cell.
  • the wireless communication system further includes a first base station, the first base station includes a first cell, and the base station device includes a second cell.
  • the receiving unit receives a first message from the first base station under control of the control unit, where the first message is used to notify that the first cell will enter a power saving mode.
  • the control unit adjusts a power parameter of the second cell, so that all user equipment UEs of the first cell are absorbed by the second cell.
  • the transmitting unit transmits a first response message to the first message to the first base station under the control of the control unit.
  • the first response message includes information about a first almost empty subframe ABS configured by the base station, where the information of the first ABS is used by the UE of the first cell to be scheduled with the first ABS. Communication is performed on the corresponding subframe.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the third cell It is a micro cell and is covered by the first cell.
  • the sending unit further sends a second response message to the first message to the first base station, where the second response message includes information of a second ABS configured by the base station, and information of the second ABS.
  • the UE for the third cell is scheduled to communicate on a subframe corresponding to the second ABS.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the third cell It is a micro cell and is covered by the first cell.
  • the first response message further includes information about a second ABS configured by the base station, where the information of the second ABS is used by a UE of the third cell to be scheduled to a subframe corresponding to the second ABS.
  • Communication where the information of the first ABS and the information of the second ABS are indication information in the form of a bitmap, used to indicate the ABS used by the UE of the first cell and the used by the third cell Said ABS.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the third cell It is a micro cell and is covered by the first cell.
  • the first response message further includes information about a second ABS configured by the base station, where the information of the second ABS is used by a UE of the third cell to be scheduled to a subframe corresponding to the second ABS.
  • the communication where the first ABS used by the first cell and the ABS used by the third cell are randomly allocated by the first base station.
  • the first response message further includes a power saving indicator, where the energy saving indicator is used to indicate that the second cell absorbs the UE of a cell.
  • the wireless communication system further includes a second base station, the base station includes a first cell, and the second base station includes a second cell. Transmitting, by the control unit, the first message and the second message to the second base station, where the first message notifies that the first cell enters a power saving mode and specifies the second base station And the second message includes the information of the first almost empty subframe ABS, where the information of the first ABS is used for the UE of the first cell to be scheduled to correspond to the first ABS. Communication is performed on the subframe.
  • the control unit sets the first cell to a power saving mode when determining that all user equipment UEs of the first cell are absorbed into the second cell.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the third cell Is a micro cell and is covered by the first cell, where the second message further includes information of the second ABS, where the information of the second ABS is used for scheduling the UE of the third cell to the second
  • the communication is performed on the subframe corresponding to the ABS.
  • the wireless communication system further includes a first base station, the first base station includes a first cell, and the base station includes a second cell.
  • the first message informs that the first cell enters a power saving mode and indicates that the second cell is Absorb the first small a cell of the UE of the area
  • the second message includes information of a first almost empty subframe ABS, where the information of the first ABS is used for a UE of the first cell to be scheduled to a child corresponding to the first ABS Communicate on the frame.
  • the control unit adjusts a power parameter of the second cell, so that all user equipment UEs of the first cell are absorbed into the second cell.
  • the wireless communication system further includes a second base station, where the second base station includes a third cell, the first cell and the second cell are macro cells, and the third cell Is a micro cell and is covered by the first cell, where the second message further includes information of the second ABS, where the information of the second ABS is used for scheduling the UE of the third cell to the second
  • the communication is performed on the subframe corresponding to the ABS.
  • the wireless communication system further includes a second base station, the base station includes a first cell, and the second base station includes a second cell.
  • the sending unit sends a first message and a second message to the second base station under the control of the control unit, where the first message is used to notify the first cell that the energy-saving mode is entered, the second message And including information about the first almost empty subframe ABS configured by the control unit, where the information of the first ABS is used by the UE of the second cell to be scheduled to communicate with a subframe corresponding to the first ABS.
  • the control unit configures the ABS information, and when determining that the user equipment UE of the first cell is absorbed into the second cell, setting the first cell to a power saving mode.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, where the first cell and the second cell are macro cells, and the third The cell is covered by the first cell, and the sending unit further sends a third message including information about the second ABS configured by the control unit to the second base station, and sends the information of the second ABS to the The third cell, where the information of the second ABS is used for the UE of the third cell to be scheduled to communicate with the subframe corresponding to the second ABS and is unavailable for the second cell.
  • the third base station includes a third cell, where the first cell and the second cell are macro cells, and the third The cell is covered by the first cell
  • the sending unit further sends a third message including information about the second ABS configured by the control unit to the second base station, and sends the information of the second ABS to the The third cell, where the information of the second ABS is used for the UE of the third cell to be scheduled to communicate with the subframe corresponding to the second ABS and is unavailable for the second cell.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the The third cell is covered by the first cell, the second message further includes information of a second ABS configured by the control unit, and the information of the second ABS is used by the UE of the third cell to be scheduled to The subframe corresponding to the second ABS communicates and is not available to the second cell.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the third cell Covered by the first cell, the receiving unit receives a fourth message from the second base station under control of the control unit, where the fourth message includes the second base station from the first ABS Information for the second ABS of the third cell selected in the information, and under the control of the control unit, the sending unit sends the information of the second ABS to the third cell.
  • the wireless communication system further includes a first base station, the first base station includes a first cell, and the base station includes a second cell.
  • the receiving unit receives the first message and the second message from the first base station under the control of the control unit, where the first message is used to notify the first cell that the energy saving mode is entered, where the The second message includes information about the first almost empty subframe ABS configured by the first base station, where the information of the first ABS is used by the UE of the second cell to be scheduled to be performed on a subframe corresponding to the first ABS.
  • the control unit causes the user equipment UE of the first cell to be absorbed by the second cell.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the third cell Receiving, by the first cell, the receiving unit further receives a third message from the first base station, where the third message includes information about a second ABS configured by the first base station, and the second ABS The information for the UE of the third cell is scheduled to communicate on a subframe corresponding to the second ABS and is not available to the second cell.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the third cell Covered by the first cell, the second message further includes a first configuration of the first base station The information of the second ABS, where the information of the second ABS is used for the UE of the third cell to be scheduled to communicate with the subframe corresponding to the second ABS and is unavailable for the second cell.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the third cell Covered by the first cell, the control unit selects information for the second ABS of the third cell from the information of the first ABS, and controls the sending unit to send the information to the third cell.
  • the information of the second ABS is described.
  • the sending unit sends the information of the second ABS to the third cell via the first base station, or the sending unit directly sends the information to the third cell. Two ABS information.
  • the wireless communication system includes a first base station and a second base station, and the first base station includes a cell, the second base station includes a second cell, the method includes: the first base station sends a first message to the second base station to notify the first cell to enter a power saving mode; Receiving, by the second base station, a first response message for the first message; when determining that all user equipments of the first cell are absorbed by the second cell, the first base station a cell is set to a power saving mode, where the first response message includes information of a first almost empty subframe ABS configured by the second base station, where the information of the first ABS is used for a UE of the first cell It is scheduled to communicate on a subframe corresponding to the first ABS.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the third cell is The micro cell is covered by the first cell; and the method further includes: the first base station receiving, by the second base station, a second response message for the first message, where the second response The message includes information of the second ABS configured by the second base station; the first base station sends information of the second ABS to the third cell, and information of the second ABS is used for The UE of the third cell is scheduled to communicate on a subframe corresponding to the second ABS.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the third cell Is a micro cell and is covered by the first cell, the first response message further includes information of a second ABS configured by the second base station, where information of the second ABS is used by a UE of the third cell Dispatching to the subframe corresponding to the second ABS, where the information of the first ABS and the information of the second ABS are indication information in the form of a bitmap, used to indicate the first cell The ABS used by the UE and the ABS used by the third cell.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the third cell Is a micro cell and is covered by the first cell; wherein, the first response message further includes information about a second ABS configured by the second base station, and information of the second ABS is used by the third cell
  • the UE is scheduled to communicate with the subframe corresponding to the second ABS.
  • the method further includes: the first base station transmitting information of the second ABS to the third cell, where the The first ABS used by one cell and the ABS used by the second cell are randomly allocated by the first base station.
  • the first response message when the first message indicates that a cell of the UE that is not the first cell is specified, the first response message further includes a power saving indicator, and the power saving indicator is used to indicate The second cell absorbs the UE of the first cell.
  • the present invention can be implemented by providing a method of performing power saving in a wireless communication system, wherein the wireless communication system includes a first base station and a second base station, and the first base station includes a first cell, the second base station includes a second cell, the method includes: the second base station receives a first message from the first base station, where the first message is used to notify the first cell to enter a power saving mode; the second base station adjusts a power parameter of the second cell, so that all user equipment UEs of the first cell are absorbed by the second cell; and the second base station sends the first base station to the first base station a first response message for the first message, where The first response message includes information about a first almost empty subframe ABS configured by the second base station, where the information of the first ABS is used by the UE of the first cell to be scheduled with the first ABS. Communication is performed on the corresponding subframe.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the third cell is a micro cell and being covered by the first cell; and the method further includes: the second base station sending a second response message to the first message to the first base station, where the second response message And including information about the second ABS configured by the second base station, where the information of the second ABS is used by the UE of the third cell to be scheduled to communicate with a subframe corresponding to the second ABS.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the third cell Is a micro cell and is covered by the first cell, the first response message further includes information of a second ABS configured by the second base station, where information of the second ABS is used by a UE of the third cell Dispatching to the subframe corresponding to the second ABS, where the information of the first ABS and the information of the second ABS are indication information in the form of a bitmap, used to indicate the first cell The ABS used by the UE and the ABS used by the third cell.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the third cell Is a micro cell and is covered by the first cell; wherein, the first response message further includes information about a second ABS configured by the second base station, and information of the second ABS is used by the third cell.
  • the UE is scheduled to communicate with the subframe corresponding to the second ABS, where the first ABS used by the first cell and the ABS used by the second cell are randomly allocated by the first base station.
  • the first response message when the first message indicates that a cell of the UE that is not the first cell is specified, the first response message further includes a power saving indicator, and the energy saving refers to The indicator is used to indicate that the second cell absorbs the UE of the first cell.
  • the present invention can be implemented by providing a method of energy saving in a wireless communication system, the wireless communication system including a first base station and a second base station, the first base station including a first cell
  • the second base station includes a second cell
  • the method includes: the first base station sends a first message to the second base station, where the first message notifies that the first cell enters a power saving mode and specifies a location
  • the second cell is a cell that absorbs the UE of the first cell; the first base station sends a second message to the second base station, where the second message includes information of a first almost empty subframe ABS, where The information of the first ABS is used for the UE of the first cell to be scheduled to communicate with the subframe corresponding to the first ABS; when it is determined that all user equipments UE of the first cell are absorbed to the first
  • the first base station sets the first cell to a power saving mode.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the third cell is And the second cell is covered by the first cell, where the second message further includes information of the second ABS, where the information of the second ABS is used by the UE of the third cell to be scheduled with the second ABS. Communication is performed on the corresponding subframe.
  • the present invention can be implemented by providing a method of energy saving in a wireless communication system, wherein the wireless communication system includes a first base station and a second base station, and the first base station includes a cell, the second base station includes a second cell, the method includes: the second base station receives a first message from the first base station, where the first message is used to notify the first cell to enter energy saving Mode and designating the second cell to be a cell that absorbs the UE of the first cell; the second base station receives a second message from the first base station, where the second message includes information of a first almost empty subframe ABS The information of the first ABS is used by the UE of the first cell to be scheduled to communicate with the subframe corresponding to the first ABS; the second base station adjusts the power parameter of the second cell, So that all user equipment UEs of the first cell are absorbed into the second cell.
  • the wireless communication system further includes a third base station, where the third base station includes a third cell, the first cell and the second cell are macro cells, and the third cell is And the second cell is covered by the first cell, where the second message further includes information of the second ABS, where the information of the second ABS is used by the UE of the third cell to be scheduled with the second ABS. Communication is performed on the corresponding subframe.
  • the base station and the method provided by the embodiments of the present invention reduce interference by using ABS subframes between cells, and logically enlarge the coverage area of the neighboring cell, thereby driving the UE in the energy-saving cell to be adjacent to the neighboring cell.
  • the energy-saving cell After the absorption, and the UE in the energy-saving cell is absorbed by the department, the energy-saving cell enters the energy-saving mode. Therefore, the invention reduces the co-channel interference, and ensures the service continuity of the energy-saving cell, and at the same time achieves the purpose of energy-saving of the cell.

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Abstract

本发明提供一种在无线通信系统中执行节能的基站及方法,该无线通信系统包括第一基站和第二基站,该第一基站包括第一小区,该第二基站包括第二小区,该方法包括:该第一基站向该第二基站发送第一消息以通知该第一小区将进入节能模式;该第一基站向该第二基站发送第二消息,该第二消息包括该第一基站配置的第一几乎空子帧ABS的信息,其中,该第一ABS的信息用于该第二小区的UE被调度到与该第一ABS对应的子帧上进行通信;当确定该第一小区的用户设备UE被吸纳到该第二小区时,该第一基站将该第一小区设置为节能模式。本发明能够保证节能小区关断时的系统业务的连续性,以及进一步提高eICIC降低干扰的效果。

Description

在无线通信系统中执行节能的基站及方法 本申请要求于 2011 年 12 月 28 日提交中国专利局、 申请号为 CN 201110447897.9、发明名称为"在无线通信系统中执行节能的基站及方法,,的 中国专利申请、 及于 2012 年 3 月 20 日提交中国专利局、 申请号为 CN 201210074797.0、 发明名称为"在无线通信系统中执行节能的基站及方法" 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
本发明实施例涉及无线通信领域, 并且更具体地, 涉及在无线通信网 络中的实现节能的方法及系统。 背景技术
无线通信系统一般提供话音、 数据等无线业务。 通常的无线通信系统 是诸如频分多址 (Frequency-Division Multiple Access, FDMA)、 时分多址 (Time Division Multiple Address , TDMA)、码分多址 ( Code Division Multiple Access , CDMA )、 正交频分复用 ( Orthogonal Frequency Division Multiplexing , OFDM )、 正交频分多址接入 (Orthogonal Frequency Division Multi Access, OFDMA)、 单载波频分多址 (Signal-Carrier Frequency Division Multiple Access, SC-FDMA)之类的多址接入系统。 在无线通信系统中, 基 站 (Base Station, BS)在下行链路上向用户设备 ( User Equipment, UE )发送数 据和 /或控制信息, 并且在上行链路上接收用户设备的数据和 /或控制信息。 类似地, UE在上行链路上向 BS发送数据和 /或控制信息, 并且在下行链路 上接收 BS发送的数据和 /或控制信息。
目前, 已经开发了长期演进( Long Term Evolution, LTE )和 /或先进 的长期演进( Advanced Long Term Evolution , LTE- A )无线通信系统。 为了 满足或提升 LTE- A的性能需求,在同构网络内部署不同类型或制式的基站, 例如, 低发射功率基站 (Lower Power Node, LPN)或发送 /接收节点、 宏 BS ( Micro BS )、微 BS ( Pico BS )、家庭 BS ( Home BS )、毫微 BS ( Femto BS )、 中继 BS ( Relay BS )、 远端射频头 ( Remote radio head, RRH )等, 以增强 网络的覆盖和性能, 这样的网络结构被称为异构网络。 而且, 可以同时在 异构网络中部署大发射功率基站 (如宏基站、 宏演进节点 B (MeNB))和与 MeNB釆用同一种制式但是釆用不同类型的 LPN。
为了提高系统的频谱利用效率, 可使 LPN可配置的上行和 /或下行频 谱资源与 MeNB可配置的上行和 /或下行频语资源进行完全或部分的频语复 用。 此时, 由于 LPN配置了和 MeNB相同或部分相同的频谱资源, 因此, LPN (或 LPN服务的 UE)和 MeNB (或 MeNB服务的 UE)的下行 (或上行)信道 传输之间会产生同信道 (或同频)干扰。 干扰会影响 LPN及 MeNB下行信道 传输及上行信道检测的可靠性。
目前, LTE-A标准中釆用时分复用(Time Division Multiplexing, TDM) 小区间干扰协调 (Inter Cell Interference Coordination, elCIC)方法来处理异构 网络情形下的小区间干扰。 干扰基站将某些子帧设置为低传输功率或者不 进行业务传输(即业务的传输功率为零), 上述子帧被称为几乎空子帧
(Almost Blank Subframe, ABS)。 被干扰基站将受到干扰基站强干扰的 UE 调度到该干扰基站配置的 ABS子帧对应的子帧上进行业务传输, 从而保证 被干扰基站影响的 UE的传输性能。
如果干扰基站和被干扰基站之间没有对 ABS 子帧上的传输功率进行 协调, 则当干扰基站将 ABS子帧上的传输功率设置得很低时, 可能几乎没 有 UE能够由干扰基站调度在 ABS子帧上进行业务传输, 从而降低了可用 的传输资源。 另一方面, 如果干扰基站将 ABS子帧调度给自己的 UE使用 以增加传输资源, 则可能由于在 ABS子帧上的传输功率设置的不合适, 仍 然会导致对被干扰基站的 UE造成强干扰。 提出了基于小区关断的节能技术。 其特点是通过在非高峰时段关闭低业务 量小区,将低业务量小区的 UE疏导到其它邻接小区, 由此实现原小区关断 节能的目的。
现有技术的 elCIC的使用局限于异构网络, 而不能对同构网络执行干 扰协调。 而在上述基于小区关断的节能技术中, 当小区关断并将该小区中 的 UE疏导到邻近小区时, 无法保证 UE业务的连续性, 而且, 小区关断也 可能引起覆盖漏洞, 虽然可以通过调整邻区覆盖以扩大覆盖范围, 从而补 偿小区关断导致的覆盖漏洞, 但是仍然存在以下问题: 如果非节能小区覆 盖扩大和节能小区关断同时进行, 则将导致掉话, 从而影响激活用户的业 务连续性; 如果非节能小区覆盖扩大和节能小区关闭异步进行, 则势必增 大邻区之间的同频干扰。 发明内容
本发明实施例提供一种在无线通信系统中的执行节能的基站及方法, 能够保证节能小区关断时业务的连续性, 以及进一步提高 elCIC 降低干扰 的效果。
本发明一方面提供了一种在无线通信系统中的执行节能的方法, 所述 无线通信系统包括第一基站和第二基站, 所述第一基站包括第一小区, 所 述第二基站包括第二小区, 其特征在于, 所述方法包括: 所述第一基站向 所述第二基站发送第一消息以通知所述第一小区将进入节能模式; 所述第 一基站从所述第二基站接收对于所述第一消息的第一响应消息; 当确定所 述第一小区的所有用户设备 UE被吸纳到所述第二小区时,所述第一基站将 所述第一小区设置为节能模式; 其中, 所述第一响应消息包括所述第二基 站配置的第一几乎空子帧 ABS的信息,其中,所述第一 ABS的信息用于所 述第一小区的 UE被调度到与所述第一 ABS对应的子帧上进行通信。 本发明另一方面提供了一种在无线通信系统中的执行节能的基站, 所 述无线通信系统还包括第二基站, 所述基站包括第一小区, 所述第二基站 包括第二小区, 其特征在于, 所述基站包括: 发送单元, 用于在控制单元 的控制下向所述第二基站发送第一消息以通知所述第一小区将进入节能模 式; 接收单元, 用于在控制单元的控制下从所述第二基站接收对于所述第 一消息的第一响应消息; 所述控制单元, 用于在确定所述第一小区的所有 用户设备 UE被吸纳到所述第二小区时, 将所述第一小区设置为节能模式, 其中, 所述第一响应消息包括所述第二基站配置的第一几乎空子帧 ABS的 信息, 其中, 所述第一 ABS的信息用于所述第一小区的 UE被调度到与所 述第一 ABS对应的子帧上进行通信。
本发明再一方面提供了一种在无线通信系统中的执行节能的方法, 所 述无线通信系统包括第一基站和第二基站, 所述第一基站包括第一小区, 所述第二基站包括第二小区, 其特征在于, 所述方法包括: 所述第二基站 从所述第一基站接收第一消息, 所述第一消息用于通知所述第一小区将进 入节能模式; 所述第二基站调节所述第二小区的功率参数, 以使所述第一 小区的所有用户设备 UE被所述第二小区吸纳; 所述第二基站向所述第一 基站发送对于所述第一消息的第一响应消息, 其中, 所述第一响应消息包 括所述第二基站配置的第一几乎空子帧 ABS的信息, 其中, 所述第一 ABS 的信息用于所述第一小区的 UE被调度到与所述第一 ABS对应的子帧上进 行通信。
本发明的仍一方面提供了一种在无线通信系统中的执行节能的基站, 所述无线通信系统还包括第一基站, 所述第一基站包括第一小区, 所述基 站设备包括第二小区, 其特征在于, 所述基站包括: 接收单元, 用于在控 制单元的控制下从所述第一基站接收第一消息, 所述第一消息用于通知所 述第一小区将进入节能模式; 所述控制单元, 用于调节所述第二小区的功 率参数, 以使得所述第一小区的所有用户设备 UE被所述第二小区吸纳; 发 送单元, 用于在所述控制单元的控制下向所述第一基站发送对于所述第一 消息的第一响应消息, 其中, 所述第一响应消息包括所述基站配置的第一 几乎空子帧 ABS的信息,其中,所述第一 ABS的信息用于所述第一小区的 UE被调度到与所述第一 ABS对应的子帧上进行通信。
本发明的仍一方面提供一种在无线通信系统中的节能的方法, 所述无 线通信系统包括第一基站和第二基站, 所述第一基站包括第一小区, 所述 第二基站包括第二小区, 其特征在于, 所述方法包括: 所述第一基站向所 述第二基站发送第一消息, 所述第一消息通知所述第一小区将进入节能模 式并且指定所述第二小区是吸纳所述第一小区的 UE的小区;所述第一基站 向所述第二基站发送第二消息, 所述第二消息包括第一几乎空子帧 ABS的 信息, 其中, 所述第一 ABS的信息用于所述第一小区的 UE被调度到与所 述第一 ABS对应的子帧上进行通信; 当确定所述第一小区的所有用户设备 UE被吸纳到所述第二小区时, 所述第一基站将所述第一小区设置为节能模 式。
本发明的仍一方面提供一种在无线通信系统中的节能的方法, 所述无 线通信系统包括第一基站和第二基站, 所述第一基站包括第一小区, 所述 第二基站包括第二小区, 其特征在于, 所述方法包括: 所述第二基站从所 述第一基站接收第一消息, 所述第一消息用于通知所述第一小区将进入节 能模式并且指定所述第二小区是吸纳所述第一小区的 UE的小区;所述第二 基站从所述第一基站接收第二消息, 所述第二消息包括第一几乎空子帧 ABS的信息, 其中所述第一 ABS的信息用于所述第一小区的 UE被调度到 与所述第一 ABS对应的子帧上进行通信; 所述第二基站调节所述第二小区 的功率参数, 以使所述第一小区的所有用户设备 UE被吸纳到所述第二小 区。
本发明的仍一方面提供一种在无线通信系统中的执行节能的方法, 所 述无线通信系统包括第一基站和第二基站, 所述第一基站包括第一小区, 所述第二基站包括第二小区, 其特征在于, 所述方法包括: 所述第一基站 向所述第二基站发送第一消息以通知所述第一小区将进入节能模式; 所述 第一基站向所述第二基站发送第二消息, 所述第二消息包括所述第一基站 配置的第一几乎空子帧 ABS的信息,其中,所述第一 ABS的信息用于所述 第二小区的 UE被调度到与所述第一 ABS对应的子帧上进行通信; 当确定 所述第一小区的用户设备 UE被吸纳到所述第二小区时,所述第一基站将所 述第一小区设置为节能模式。
本发明的仍一方面提供一种在无线通信系统中的执行节能的基站, 所 述无线通信系统还包括第二基站, 所述基站包括第一小区, 所述第二基站 包括第二小区, 其特征在于, 所述基站包括: 发送单元, 用于在控制单元 的控制下向所述第二基站发送第一消息和第二消息, 其中, 所述第一消息 用于通知所述第一小区将进入节能模式, 所述第二消息包括所述控制单元 配置的第一几乎空子帧 ABS的信息,其中,所述第一 ABS的信息用于所述 第二小区的 UE被调度到与所述第一 ABS对应的子帧上进行通信; 和所述 控制单元, 用于配置 ABS信息, 并且在确定所述第一小区的用户设备 UE 被吸纳到所述第二小区时, 将所述第一小区设置为节能模式。
本发明的仍一方面提供一种在无线通信系统中的执行节能的方法, 所 述无线通信系统包括第一基站和第二基站, 所述第一基站包括第一小区, 所述第二基站包括第二小区, 其特征在于, 所述方法包括: 所述第二基站 从所述第一基站接收第一消息, 所述第一消息用于通知所述第一小区将进 入节能模式; 所述第二基站从所述第一基站接收第二消息, 所述第二消息 包括所述第一基站配置的第一几乎空子帧 ABS 的信息, 其中, 所述第一 ABS的信息用于所述第二小区的 UE被调度到与所述第一 ABS对应的子帧 上进行通信;所述第二基站使所述第一小区的用户设备 UE被所述第二小区 吸纳。
本发明的仍一方面提供一种在无线通信系统中的执行节能的基站, 所 述无线通信系统还包括第一基站, 所述第一基站包括第一小区, 所述基站 包括第二小区, 其特征在于, 所述基站包括: 接收单元, 用于在控制单元 的控制下从所述第一基站接收第一消息和第二消息, 其中, 所述第一消息 用于通知所述第一小区将进入节能模式, 所述第二消息包括所述第一基站 配置的第一几乎空子帧 ABS的信息,所述第一 ABS的信息用于所述第二小 区的 UE被调度到与所述第一 ABS对应的子帧上进行通信;所述控制单元, 用于使所述第一小区的所有用户设备 UE被所述第二小区吸纳。
(1) 上述技术方案在小区之间错开使用 ABS子帧, 因此, 本发明 降低了同频干扰, 并且保证了节能小区的业务连续性, 同时实现了小区 节能的目的。 附图说明
为了更清楚地说明本发明实施例的技术方案, 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 附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付 出创造性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1至 3是示出根据本发明实施例的在无线通信系统中实施 ABS子 帧错开的一般过程;
图 4是根据本发明第一实施例的在无线通信系统中执行节能的操作序 列的示意图;
图 5是根据本发明第二实施例的在无线通信系统中执行节能的操作序 程的示意图;
图 6是根据本发明第三实施例的在无线通信系统中执行节能的操作序 列的示意图;
图 7是根据本发明第四实施例的在无线通信系统中执行节能的操作序 列的示意图; 图 8是根据本发明第五实施例的在无线通信系统中执行节能的操作序 列的示意图;
图 9是根据本发明第六实施例的在无线通信系统中执行节能的操作序 列的示意图;
图 10是根据本发明第七实施例的在无线通信系统中执行节能的操作 序列的示意图;
图 11 是根据本发明第八实施例的在无线通信系统中执行节能的操作 序列的示意图;
图 12是根据本发明第九实施例的在无线通信系统中执行节能的操作 序列的示意图;
图 13是根据本发明实施例的在无线通信系统中的执行节能的基站的 方框图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进 行清楚、 完整地描述, 显然, 所描述的实施例是本发明一部分实施例, 而 不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有 做出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范 围。
图 1至 3示出了根据本发明实施例的在无线通信系统 200中实施 ABS 子帧错开的一般过程。 参见图 1 , 无线通信系统 200包括七个基站 A~F。 然 而, 本领域技术人员应当理解, 本发明不限于此, 即无线通信系统 200可 以包括更多或更少的基站。 在图 1中, 假定基站 B~G覆盖的小区是低负载 的被指定进入节能模式的区域(在下文中称为节能小区), 而基站 A覆盖的 小区 (在下文中称为非节能小区)吸纳基站 B~G覆盖的小区中的业务。 在 下文中, 为了便于说明, 将不区分基站和小区。 参见图 2, 在无线通信系统 200中, 分别在小区对 和8、 和 、 A和 D、 A和 E、 A和 F以及 A和 G之间实施 ABS子帧错开 , 也就是说, 在一个小区对中的两个小区之间将错开使用 ABS子帧。 此外, 也可以在小 区对之间实施频域上的频带 (Radio Band, RB )错开。 在下面的说明中, 仅仅以 ABS子帧错开为例来说明本发明实施例。 图 3是示出在实施 ABS 错开后的结果的示意图。
而且, 可以在实施 ABS子帧错开之前调整非节能小区 (图 1 中的小 区 A ) 的覆盖面积, 这可以通过调整基站 A的发送功率和倾角来实现, 并 且也可以通过调整基站 A的小区个体偏移量( Cell Individual Offset, CIO ) 参数来实现。 然而, 应当注意: 对于本发明实施例来说, 在实施 ABS错开 之前调整非节能小区的覆盖并不是必需的, 例如, 根据网络规划, 如果在 小区 E、 D、 C、 B和 G之间没有覆盖漏洞, 则也可以不调整小区 A的覆盖 面积, 即不必调整基站 A的发送功率、 倾角或 CIO参数。
在实施 ABS子帧错开之后,将驱使节能小区中的 UE被吸纳到非节能 小区中,具体而言,使得所述节能小区中的激活的 UE切换到非节能小区中 以保证业务的连续性。 此外, 还可以包括使得所述节能小区中的空闲 UE 选择 /重选择到所述非节能小区。
在图 1至图 2示出的例子中, 在小区对八和8、 八和 、 八和0、 A 和 E、 A和 F以及 A和 G之间实施执行 ABS错开后, 系统在轻负载、 轻干 扰的情况下驱动节能小区 B、 C、 D、 E、 F和 G中的激活的 UE切换到非节 能小区 A中, 这可以通过更改基站 A的 CIO参数来实现。 根据本发明的一 个实施例, OAM(Operation, Administration and Maintenance, 操作、 管理和 维护)设备 (未示出)指示基站 A更改 CIO参数。 根据本发明的另一实施例, 基站 A可以自己主动更改 CIO参数。 在图 1示出的例子中, 节能小区^ C、 D、 E、 F和 G中的激活的 UE切换到非节能小区 A中, 从而实现对节 能小区 B、 C、 D、 E、 F和 G的业务卸载。 此外, 还可以通过设置节能小区 B、 C、 D、 E、 F和 G以及非节能小 区 A之间的接收信号质量之间的差值 Q。ffset来使得节能小区 B、 C、 D、 E、 F和 G中的空闲 UE小区选择 /重选择到非节能小区 A。
当节能小区中的所有 UE被吸纳到非节能小区中后,设置节能小区 B、 C、 D、 E、 F和 G以进入节能模式, 例如, 可以通过关断基站 B、 C、 D、 E、 F和 G来实现。 然而, 本发明不限于此, 也可以通过其他方式使得节能 小区进入节能模式。
下面对根据本发明实施例的在无线通信系统中的执行实现节能的过 程进行详细描述。
图 4 是根据本发明第一实施例的在无线通信系统中执行节能的过程 400 的操作序列的示意图。 在下面的说明中, Mi表示宏基站或宏小区, 表示微基站或微小区, 其中 i是自然数, 在此, 为了说明方便, 不区分基站 和小区。 此外, 假定微小区 P1被宏小区 M2覆盖。 本领域技术人员应当理 解: 为了说明的方便, 在下面图 4-8中示出了宏基站 M1~M3以及 M2的小 区中的微基站 P1 , 但是本发明不限于此, 例如, 无线通信系统可以包括更 多或更少的宏基站, 并且 Ml和 M3的小区中也可以包括微基站, 或者 Ml 至 M3的小区都不包括微基站。
参见图 4 , 在 410 , OAM设备向宏基站 M2发送 ES— Start消息以指示 小区 M2将进入节能模式, 其中所述 ES— Start消息指定 M2作为节能小区。 此外, 也可以由宏基站 M2确定其小区是否将进入节能模式, 例如, 在 M2 判断其小区中的业务量较少从而可以进入节能模式时, M2指定自己的小区 为节能小区, 此时, 宏基站 M2向 OAM设备通知其小区将进入节能模式。
在 420-1、 420-2、 420-3 , M2向其相邻基站(例如宏基站 M3、 微基 站 P1 )发送 ES— Start— To— Neigh消息以通知小区 M2将进入节能模式, 即通 知其相邻的宏小区开始吸纳宏小区 M2中的 UE。
在 430-1 , 当 Ml接收到 ES— Start— To— Neigh消息时, Ml向 M2发送 第一响应消息, 并且在经过预定时间后在 430-2向 M2发送第二响应消息, 其中, 所述第一响应消息包括由 Ml分配的第一 ABS (例如, 第 1、 3、 5 子帧)的信息,所述第一 ABS的信息用于微小区 P1的 UE被调度到与所述 第一 ABS对应的子帧上进行通信, 所述第二响应消息包括由 Ml分配的第 二 ABS (例如, 第 6、 7子帧) 的信息, 所述第二 ABS的信息用于宏小区 M2的 UE被调度到与所述第二 ABS对应的子帧上进行通信。 在此, 本发 明实施例被描述成先发送第一响应消息(即包括 Ml分配的由微小区的 UE 使用的 ABS信息的响应消息), 然后在延迟预定时间后, 发送第二响应消 息 (即包括 Ml分配的由宏小区 M2的 UE使用的 ABS信息的响应消息 ), 然而, 本发明实施例不限于此, 例如, Ml也可以先发送第二响应消息(即 包括 Ml分配的由宏小区 M2的 UE使用的 ABS信息的响应消息 ), 在延迟 预定时候后发送第一响应消息 (即包括 Ml 分配的由微小区的 UE使用的 ABS信息的响应消息)。
在 440-1、 440-2 , 当接收到第一响应消息时, M2向相邻基站转发在 第一响应消息中包含的 Ml分配的由微小区 P1的 UE使用的第一 ABS的信 息。
在 450 , OAM设备向 Ml发送 CIO— Change— For— HO消息以指示宏基 站 Ml更改 CIO参数,从而逻辑地扩大 Ml的覆盖范围以驱动节能小区 M2 中激活的 UE切换到宏小区 Ml。 然而, 本发明实施例不限于此, 例如, 也 可以由 Ml直接更改 CIO参数而不需要 OAM设备的指示, 此外, 如上面 参照图 1-3所述, OAM设备还可以指示 M2设置 Ml和 M2之间的接收信 号质量之间的差值 Q。ffset来使得 M2中的空闲 UE小区选择 /重选择到非节能 小区 A。
在 460 , 当 M2中的所有 UE被吸纳到宏小区 Ml时, M2向 OAM设 备通知 M2中的所有 UE已被吸纳到宏小区 Ml并且可以进入节能模式(在 图 4中未示出 ), OAM设备接收到该通知后向 M2发送 Switch— Off消息以 指示 M2将其小区设置为节能模式, M2可以以各种方式将其小区设置为节 能模式, 例如, 可以关断基站 M2。 此外, M2也可以在没有 OAM设备的 通知的情况下直接设置节能模式。
图 5 是根据本发明第二实施例的在无线通信系统中执行节能的过程 500的操作序列的示意图。 图 5中的 510、 520-1-520-3 , 550和 560分别与 图 4中的 410、 420-1-420-3 , 450和 460相同, 因此在此不再赘述。
参见图 5, 在 530, 当基站 Ml接收到 ES— Start— To— Neigh消息时, Ml 向 M2发送第一响应消息, 其中, 所述第一响应消息包括由 Ml分配的第一 ABS (例如, 第 1、 3、 5子帧) 的信息和由 Ml分配的第二 ABS (例如, 第 6、 7子帧 ) 的信息, 所述第一 ABS的信息用于微小区 P1的 UE被调度 到与所述第一 ABS对应的子帧上进行通信,所述第二 ABS的信息用于宏小 区 M2的 UE被调度到与所述第二 ABS对应的子帧上进行通信。 所述第一 ABS的信息和所述第二 ABS的信息为位图形式的指示信息。 例如, 所述位 图形式的指示信息可以是如下的表格: 例如 [P,P,P,M,M][1,3,5,6,7] , 其中, 前一括号中的 'P'表示在后一括号中相应位置上的帧号指示的子帧用于微小 区的 UE, 而前一括号中的 'M,表示在后一括号中相应位置上的帧号指示的 子帧用于宏小区的 UE。 此外, 所述位图形式的指示信息可以是如下的串, 例如 [11100][1010111000] ,其中,前一括号中的 'Γ表示在后一括号中由相应 位置表示的子帧用于微小区的 UE,前一括号中的 '0'表示在后一括号中由相 应位置表示的子帧用于宏小区的 UE,后一括号中的 Τ表示由其所在位置表 示的子帧可用作 ABS子帧, 在该示例中, ABS子帧为第 1、 3、 5、 6和 7 子帧, 并且第 1、 3、 5子帧用于微小区, 而第 6和 7子帧用于宏小区。
在 540 , 当接收到第一响应消息时, Μ2向微基站 P1转发在第一响应 消息中包含的 Ml分配的由微小区 PI的 UE使用的第一 ABS的信息。
图 6 是根据本发明第三实施例的在无线通信系统中执行节能的过程
600的操作序列的示意图。 图 6中的 610、 650和 660分别与图 4中的 410、 450和 460相同, 因此在此不再赘述。
参见图 6, 在 620-1、 620-2, M2向其相邻基站(例如, Ml和 M3 ) 发送 ES— Start— To— Neigh 消息以通知 M2 将进入节能模式, 其中, 所述 ES— Start— To— Neigh消息指示没有指定吸纳 M2的 UE的小区。
在 630 , 当接收到该 ES— Start— To— Neigh消息时, Ml向 M2发送第一 响应消息, 所述第一响应消息包括节能指示符和 Ml分配的 ABS的信息, 其中, 所述节能指示符表示 Ml是吸纳 M2的 UE的小区。
在 640, 当接收到所述第一相应消息时, M2随机地将所述第一响应消 息中包括的 ABS{1, 3, 5, 6, 7}分配给宏小区 M2和微小区 P1 ,例如,将第 1、 3、 5子帧分配给微小区 P1 , 将第 6、 7子帧分配给宏小区 M2。
图 6中仅示出了 Ml响应 ES— Start— To— Neigh消息的情形, 然而, 本 发明实施例不限于此,也就是说,多个相邻小区均可以对 ES— Start— To— Neigh 消息进行应答, 并且 M2可以釆用先应答的响应消息中的 ABS子帧, 也可 以釆用所有的应答的响应消息中的 ABS子帧。
图 7 是根据本发明第四实施例的在无线通信系统中执行节能的过程
700的操作序列的示意图。 图 7中的 710、 750和 760分别与图 4中的 410、 450和 460相同, 因此在此不再赘述。
参见图 7 , 在 720 , M2 向相邻小区中一个小区 (例如, Ml )发送 ES— Start— To— Neigh 消息以通知 M2 将进入节能模式, 其中, 所述 ES— Start— To— Neigh消息指示 Ml是吸纳 M2的 UE的小区。
在 730, 当接收到该 ES— Start— To— Neigh消息时, Ml向 M2发送第一 响应消息, 所述第一响应消息包括通常的 ABS的信息。
在 740, 当接收到所述第一响应消息时, M2随机地将所述第一响应消 息中包括的 ABS{1, 3, 5, 6, 7}分配给宏小区 M2和微小区 P1 ,例如,将第 1、 3、 5子帧分配给微小区 P1 , 将第 6、 7子帧分配给宏小区。
在图 7中示出了 Ml对 ES— Start— To— Neigh消息进行应答, 然而, 本 发明实施例不限于此, 也就是说, Ml可以拒绝该 ES— Start— To— Neigh消息, 即拒绝作为吸纳 Ml中的 UE的小区, 其可以向 M2发送拒绝消息, 或者可 以不发送任何消息。此时, 当 M2接收到该拒绝消息时或者 M2在经过一预 定时间没有接收到 ABS消息时, M2可以向另一相邻基站(例如 M3 )发送 上述 ES— Start— To— Neigh消息。
图 8 是根据本发明第五实施例的在无线通信系统中执行节能的过程 800的操作序列的示意图。 图 8中的 810、 850和 860分别与图 4中的 410、 450和 460相同, 因此在此不再赘述。
参见图 8 , 在 820 , M2 向相邻小区中一个小区 (例如, Ml )发送 ES— Start— To— Neigh 消息以通知 M2 将进入节能模式, 其中, 所述 ES— Start— To— Neigh消息指示 Ml是吸纳 M2的 UE的小区。
在 830, M2向 Ml发送 ABS的信息,所述 ABS的信息包括第一 ABS 的信息和第二 ABS的信息, 所述第一 ABS的信息用于微小区 P1的 UE被 调度到与所述第一 ABS对应的子帧上进行通信,所述第二 ABS的信息用于 宏小区 M2的 UE被调度到与所述第二 ABS对应的子帧上进行通信。
在上述实施例中,非节能小区(下文中也称为吸纳小区)是干扰源(例 如在通过调整吸纳小区的功率和倾角来实现扩大吸纳小区的覆盖时), 节能 小区是受干扰者, 这是因为较大功率的吸纳小区扩展完全覆盖节能小区, 从而对节能小区形成干扰,因此,在这种情况下,需要吸纳小区来配置 ABS, 而节能小区的 UE被调度到与吸纳小区所配置的 ABS对应的子帧上进行通 信。
如果不是通过调整吸纳小区的功率和倾角而是仅仅通过调整 CIO 来 扩大吸纳小区的覆盖, 则由于吸纳小区的覆盖范围的扩大, 吸纳小区的路 径损耗增加, 但是其功率却不变, 所以这造成吸纳小区的路径损耗远远大 于节能小区的路径损耗, 在这种情况下, 节能小区成为干扰源, 而吸纳小 区成为受干扰者, 因而, 在这种情况下, 需要节能小区来配置 ABS, 而吸 纳小区的 UE被调度到与节能小区所配置的 ABS对应的子帧上进行通信。 图 9至 12描述在节能小区配置 ABS时的在无线通信系统中执行节能 的操作, 在图 9至 12 中, 无线通信系统包括 OAM、 宏小区 Ml、 M2和 M3、 以及微小区 PI , 其中 PI被宏小区 M2覆盖。 然而, 本领域技术人员 应当理解, 图 9至 12中的无线通信系统的配置仅仅是通过举例的方式来说 明本发明, 本发明并不限于此, 例如, 微小区 P1也可以是尺寸较小的宏小 区。
图 9是根据本发明第六实施例的在无线通信系统中执行节能的操作序 列的示意图。 图 9中的 910、 920-1、 920-2、 920-3、 950和 960分别与图 4 中的 410、 420-1、 420-2、 420-3、 450和 460相同, 因此在此不再赘述。
参见图 9, 在 930-1 , M2向 Ml发送第一指示信息, 其指示对于 Ml 来说不可用的第一 ABS, 例如, ABS{1,3,5}, 即 M2通知 Ml对于 Ml来说 由第一指示信息指示的该第一 ABS不可用。 在此, 第一指示信息也可以指 示可用于 M2的 P1的第一 ABS, 在这种情况下, 相当于 M2向 Ml通知第 一 ABS可用于 M2的 P1并且该第一 ABS不可用于 Ml。 在 940, M2向 P1 发送第二指示信息, 其指示第二 ABS, 例如 ABS{1,3,5}, 即通知 PI 可以 使用由第二指示信息指示的该第二 ABS。 在 930-2, M2向 Ml发送第三指 示信息, 其指示第三 ABS, 例如, ABS{6,7}, 从而通知 Ml可以使用该第 三 ABS。 本领域技术人员应当理解, 本实施例的上述消息流程仅仅是通过 举例的方式来说明本发明, 本发明也可以利用其他消息流程来实现 M2 向 Ml发送指示 ABS的信息, 例如, M2可以通过一个消息向 Ml通知可用和 不可用的 ABS, 即将第一指示信息和第三指示信息合并成一个指示信息。 例如指示 ABS{1,3,5,6,7}的信息, 其中指示 ABS{1 , 3 , 5}不可用于 Ml , 而 ABS{6, 7}可用于 Ml ,其中,所述指示信息可以为位图形式的指示信息。 例如, 所述位图形式的指示信息可以是如下的表格: [Ρ,Ρ,Ρ,Μ,Μ] [1,3,5,6,7] , 其中与 Ρ对应的 ABS不可用于 Ml , 而与 M对应的 ABS可用于 Ml。 本领 域的技术人员可以理解,上述指示信息可以通过隐式方式或显式方式由 M2 发送至 P1或 Ml。 例如, 隐式方式可以为两段式信息传递, 如本实施例的 930-1中 M2向 Ml发送的第一指示信息, 及 930-2中 M2向 Ml发送的第 三指示信息。 由于 M2向 Ml传送了两次信息, 则暗含上述两次信息所指示 的内容不同。 显式方式可以为位图表格式, 例如第二实施例中的表格
[Ρ,Ρ,Ρ,Μ,Μ] [1,3,5,6,7] , 本发明对此不做限定。
图 10是根据本发明第七实施例的在无线通信系统中执行节能的操作 序列的示意图。 图 10 中的 1010、 1020-1、 1020-2、 1020-3、 1050和 1060 分别与图 5中的 510、 520-1、 520-2、 520-3、 550和 560相同, 因此在此不 再赘述。
参见图 10, 在 1030, Μ2向 Ml发送位图形式的指示 ABS的指示信 息, 例如, 所述位图形式的指示信息可以是如下的表格: [Ρ,Ρ,Ρ,Μ,Μ] [1,3,5,6,7] , 其中与 Ρ对应的 ABS不可用于 Ml , 而与 M对应的 ABS 可用于 Ml , 在该例子中, 位图形式的指示 ABS 的指示信息表示 ABS{1,3,5}对于 Ml来说不可用, 而 ABS{6,7}可用。 在 1040, M2向 P1发 送第二指示信息, 其通知 P1可以使用的 ABS, 例如, ABS{1,3,5}。
图 11和 12是根据本发明第八实施例和第九实施例的在无线通信系统 中执行节能的操作序列的示意图。 图 11 中的 1110、 1120-1、 1120-2、 1150 和 1160分别与图 6中的 610、 620-1、 620-2、 650和 660相同以及图 12中 的 1210、 1220-1、 1220-2、 1250和 1260分别与图 6中的 610、 620-1、 620-2、 650和 660相同, 因此在此不再赘述。
参见图 11 , 在 1130, M2向 Ml发送第一指示信息, 其指示 M2配置 的第一 ABS, 例如, ABS{1,3,5,6,7}, 即 M2通知 Ml , Ml可以使用 M2所 配置的该第一 ABS, Ml在接收到第一指示信息后, 从该第一 ABS中选择 用于 Ml的 ABS, 例如, Ml选择 ABS{6,7}, 并且在 1140, 向 M2覆盖的 P1发送第二指示信息, 其指示第二 ABS, 通知 P1可以使用该第二 ABS, 例如, ABS{1 , 3 , 5} , 其中, 所述第二 ABS是 Ml从第一 ABS中选择的 ABS,例如, 第一 ABS可以是 Ml从所述第一 ABS中选择用于 Ml的 ABS 之后剩余的 ABS。 在本实施例中, Ml直接将第二指示信息发送给 P1 , 例 如, Ml通过 X2接口直接将第二指示信息发送给 Pl。
然而, 如果 Ml和 P1不是部区关系, 例如 , 它们之间没有 X2接口, 则 Ml不能直接将第二指示信息发送给 PI ,在这种情况下, Ml先将第二指 示信息发送 M2, 然后 M2 再将第二指示信息发送给 Pl。 参见图 12, 在 1240-1 , Ml将第二指示信息发送给 M2, 然后在 1240-2, M2将该第二指示 信息发送给 Pl。
下面说明根据本发明实施例的在无线通信系统中的用于执行节能的 基站。
图 13 示出根据本发明实施例的在无线通信系统中用于执行节能的基 站。
参见图 13 , 基站 1300包括发送单元 1301、 接收单元 1302和控制器 1303。 其中, 控制单元 1303可以是被实现为控制基站 1300的整体操作的 处理器或处理器阵列。 发送单元 1301可以被实现为通过有线或无线方式向 外部设备发送控制信号和数据信号的发送电路, 而接收单元 1302可以被实 现为通过有线或无线方式从外部设备接收控制信号和数据信号的接收电 路。 在本发明实施例中, 发送单元 1301和接收单元 1302被示出为分开的 部件, 但是本发明实施例不限于此, 发送单元 1301和接收单元 1302也可 以集成到单个部件中。
图 13示出的无线通信系统中的基站可以执行如上参照图 1到 12所述 的操作。
根据本发明的一个实施例, 所述无线通信系统还包括第二基站, 所述 基站包括第一小区, 所述第二基站包括第二小区, 所述发送单元在控制单 元的控制下向所述第二基站发送第一消息以通知所述第一小区将进入节能 模式。 所述接收单元在控制单元的控制下从所述第二基站接收对于所述第 一消息的第一响应消息。 所述控制单元在确定所述第一小区的所有用户设 备 UE被吸纳到所述第二小区时, 将所述第一小区设置为节能模式, 其中, 所述第一响应消息包括所述第二基站配置的第一几乎空子帧 ABS的信息, 其中, 所述第一 ABS的信息用于所述第一小区的 UE被调度到与所述第一 ABS对应的子帧上进行通信。
根据本发明的一个实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 其中所述第一小区和所述第二小区是宏小区, 所 述第三小区是微小区并且被所述第一小区覆盖。 所述接收单元还从所述第 二基站接收对于所述第一消息的第二响应消息, 其中, 所述第二响应消息 包括所述第二基站配置的第二 ABS的信息。所述发送单元将所述第二 ABS 的信息发送给所述第三小区, 所述第二 ABS 的信息用于所述第三小区的 UE被调度到与所述第二 ABS对应的子帧上进行通信。
根据本发明的一个实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区是微小区并且被所述第一小区覆盖。 所述第一响应消息还包括所述 第二基站配置的第二 ABS的信息,所述第二 ABS的信息用于所述第三小区 的 UE被调度到与所述第二 ABS对应的子帧上进行通信, 其中, 所述第一 ABS的信息和所述第二 ABS的信息为位图形式的指示信息,用于指示所述 第一小区的 UE使用的所述 ABS和所述第三小区使用的所述 ABS。
根据本发明的一个实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区是微小区并且被所述第一小区覆盖。 所述第一响应消息还包括所述 第二基站配置的第二 ABS的信息,所述第二 ABS的信息用于所述第三小区 的 UE被调度到与所述第二 ABS对应的子帧上进行通信。 所述发送单元将 所述第二 ABS的信息发送给所述第三小区, 其中所述第一小区使用的第一 ABS和所述第二小区使用的 ABS为所述基站随机分配的。 当所述第一消息 指示没有指定吸纳所述第一小区的 UE的小区时,所述第一响应消息还包括 节能指示符, 所述节能指示符用于指示所述第二小区吸纳所述第一小区的 UE。
根据本发明的另一实施例, 所述无线通信系统还包括第一基站, 所述 第一基站包括第一小区, 所述基站设备包括第二小区。 所述接收单元在控 制单元的控制下从所述第一基站接收第一消息, 所述第一消息用于通知所 述第一小区将进入节能模式。 所述控制单元调节所述第二小区的功率参数, 以使得所述第一小区的所有用户设备 UE被所述第二小区吸纳。所述发送单 元在所述控制单元的控制下向所述第一基站发送对于所述第一消息的第一 响应消息。 其中, 所述第一响应消息包括所述基站配置的第一几乎空子帧 ABS的信息, 其中, 所述第一 ABS的信息用于所述第一小区的 UE被调度 到与所述第一 ABS对应的子帧上进行通信。
根据本发明的另一实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区是微小区并且被所述第一小区覆盖。 所述发送单元还向所述第一基 站发送对于所述第一消息的第二响应消息, 其中所述第二响应消息包括所 述基站配置的第二 ABS的信息,所述第二 ABS的信息用于所述第三小区的 UE被调度到与所述第二 ABS对应的子帧上进行通信。
根据本发明的另一实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区是微小区并且被所述第一小区覆盖。 所述第一响应消息还包括所述 基站配置的第二 ABS的信息, 所述第二 ABS的信息用于所述第三小区的 UE被调度到与所述第二 ABS对应的子帧上进行通信, 其中所述第一 ABS 的信息和所述第二 ABS的信息为位图形式的指示信息, 用于指示所述第一 小区的 UE使用的所述 ABS和所述第三小区使用的所述 ABS。 根据本发明的另一实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区是微小区并且被所述第一小区覆盖。 所述第一响应消息还包括所述 基站配置的第二 ABS的信息, 所述第二 ABS的信息用于所述第三小区的 UE被调度到与所述第二 ABS对应的子帧上进行通信, 其中, 所述第一小 区使用的第一 ABS和所述第三小区使用的 ABS由所述第一基站随机分配。 当所述第一消息指示没有指定吸纳所述第一小区的 UE的小区时,所述第一 响应消息还包括节能指示符, 所述节能指示符用于指示所述第二小区吸纳 所述第一小区的 UE。
根据本发明的再一实施例, 所述无线通信系统还包括第二基站, 所述 基站包括第一小区, 所述第二基站包括第二小区。 所述发送单元, 在控制 单元的控制下向所述第二基站发送第一消息和第二消息, 其中, 所述第一 消息通知所述第一小区将进入节能模式并且指定所述第二基站是吸纳第一 小区的 UE的小区, 所述第二消息包括第一几乎空子帧 ABS的信息, 所述 第一 ABS的信息用于第一小区的 UE被调度到与所述第一 ABS对应的子帧 上进行通信。所述控制单元在确定所述第一小区的所有用户设备 UE被吸纳 到所述第二小区时, 将所述第一小区设置为节能模式。
根据本发明的再一实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区是微小区并且被所述第一小区覆盖, 其中, 所述第二消息还包括第 二 ABS的信息,所述第二 ABS的信息用于所述第三小区的 UE调度到与所 述第二 ABS对应的子帧上进行通信。
根据本发明的仍一实施例, 所述无线通信系统还包括第一基站, 所述 第一基站包括第一小区, 所述基站包括第二小区。 所述接收单元在控制单 元的控制下从所述第一基站接收第一消息和第二消息, 其中, 所述第一消 息通知所述第一小区将进入节能模式并且指示所述第二小区是吸纳第一小 区的 UE的小区, 所述第二消息包括第一几乎空子帧 ABS的信息, 其中所 述第一 ABS的信息用于所述第一小区的 UE被调度到与所述第一 ABS对应 的子帧上进行通信。 所述控制单元调节所述第二小区的功率参数, 以使得 所述第一小区的所有用户设备 UE被吸纳到所述第二小区。
根据本发明的仍一实施例, 所述无线通信系统还包括第二基站, 所述 第二基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区是微小区并且被所述第一小区覆盖, 其中, 所述第二消息还包括第 二 ABS的信息,所述第二 ABS的信息用于所述第三小区的 UE调度到与所 述第二 ABS对应的子帧上进行通信。
根据本发明的仍一实施例, 所述无线通信系统还包括第二基站, 所述 基站包括第一小区, 所述第二基站包括第二小区。 所述发送单元在控制单 元的控制下向所述第二基站发送第一消息和第二消息, 其中, 所述第一消 息用于通知所述第一小区将进入节能模式, 所述第二消息包括所述控制单 元配置的第一几乎空子帧 ABS的信息,其中,所述第一 ABS的信息用于所 述第二小区的 UE被调度到与所述第一 ABS对应的子帧上进行通信; 和所 述控制单元配置 ABS信息, 并且在确定所述第一小区的用户设备 UE被吸 纳到所述第二小区时, 将所述第一小区设置为节能模式。
根据本发明的仍一实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 其中所述第一小区和所述第二小区是宏小区, 所 述第三小区被所述第一小区覆盖, 所述发送单元还向所述第二基站发送包 括所述控制单元配置的第二 ABS的信息的第三消息,并且将所述第二 ABS 的信息发送给所述第三小区, 其中, 所述第二 ABS的信息用于所述第三小 区的 UE被调度到与所述第二 ABS对应的子帧上进行通信并且不可用于所 述第二小区。
根据本发明的仍一实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区被所述第一小区覆盖, 所述第二消息还包括所述控制单元配置的第 二 ABS的信息,所述第二 ABS的信息用于所述第三小区的 UE被调度到与 所述第二 ABS对应的子帧上进行通信并且不可用于所述第二小区。
根据本发明的仍一实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区被所述第一小区覆盖, 所述接收单元在所述控制单元的控制下从所 述第二基站接收第四消息, 其中, 所述第四消息包括所述第二基站从所述 第一 ABS的信息中选择的用于所述第三小区的第二 ABS的信息,并且在所 述控制单元的控制下, 所述发送单元向所述第三小区发送所述第二 ABS的 信息。
根据本发明的仍一实施例, 所述无线通信系统还包括第一基站, 所述 第一基站包括第一小区, 所述基站包括第二小区。 所述接收单元在所述控 制单元的控制下从所述第一基站接收第一消息和第二消息, 其中, 所述第 一消息用于通知所述第一小区将进入节能模式, 所述第二消息包括所述第 一基站配置的第一几乎空子帧 ABS的信息,所述第一 ABS的信息用于所述 第二小区的 UE被调度到与所述第一 ABS对应的子帧上进行通信; 所述控 制单元使所述第一小区的用户设备 UE被所述第二小区吸纳。
根据本发明的仍一实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区被所述第一小区覆盖, 所述接收单元还从所述第一基站接收第三消 息, 其中, 所述第三消息包括所述第一基站配置的第二 ABS的信息, 所述 第二 ABS的信息用于所述第三小区的 UE被调度到与所述第二 ABS对应的 子帧上进行通信并且不可用于所述第二小区。
根据本发明的仍一实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区被所述第一小区覆盖, 所述第二消息还包括所述第一基站配置的第 二 ABS的信息,所述第二 ABS的信息用于所述第三小区的 UE被调度到与 所述第二 ABS对应的子帧上进行通信并且不可用于所述第二小区。
根据本发明的仍一实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区被所述第一小区覆盖, 所述控制单元从所述第一 ABS的信息中选择 用于所述第三小区的第二 ABS的信息, 并且控制所述发送单元向所述第三 小区发送所述第二 ABS的信息。
根据本发明的仍一实施例, 所述发送单元经由所述第一基站向所述第 三小区发送所述第二 ABS的信息, 或者所述发送单元直接向所述第三小区 发送所述第二 ABS的信息。
此外, 根据本发明的一个方面, 可以通过提供一种在无线通信系统中 的执行节能的方法来实现, 其中, 所述无线通信系统包括第一基站和第二 基站, 所述第一基站包括第一小区, 所述第二基站包括第二小区, 所述方 法包括: 所述第一基站向所述第二基站发送第一消息以通知所述第一小区 将进入节能模式; 所述第一基站从所述第二基站接收对于所述第一消息的 第一响应消息;当确定所述第一小区的所有用户设备 UE被吸纳到所述第二 小区时, 所述第一基站将所述第一小区设置为节能模式; 其中, 所述第一 响应消息包括所述第二基站配置的第一几乎空子帧 ABS的信息, 其中, 所 述第一 ABS的信息用于所述第一小区的 UE被调度到与所述第一 ABS对应 的子帧上进行通信。
根据本发明的一个实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区是微小区并且被所述第一小区覆盖; 并且, 所述方法还包括: 所述 第一基站从所述第二基站接收对于所述第一消息的第二响应消息, 其中, 所述第二响应消息包括所述第二基站配置的第二 ABS的信息; 所述第一基 站将所述第二 ABS的信息发送给所述第三小区,所述第二 ABS的信息用于 所述第三小区的 UE被调度到与所述第二 ABS对应的子帧上进行通信。 根据本发明的另一实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区是微小区并且被所述第一小区覆盖, 所述第一响应消息还包括所述 第二基站配置的第二 ABS的信息,所述第二 ABS的信息用于所述第三小区 的 UE被调度到与所述第二 ABS对应的子帧上进行通信, 其中, 所述第一 ABS的信息和所述第二 ABS的信息为位图形式的指示信息,用于指示所述 第一小区的 UE使用的所述 ABS和所述第三小区使用的所述 ABS。
根据本发明的再一实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区是微小区并且被所述第一小区覆盖; 其中, 所述第一响应消息还包 括所述第二基站配置的第二 ABS的信息,所述第二 ABS的信息用于所述第 三小区的 UE被调度到与所述第二 ABS对应的子帧上进行通信; 所述方法 还包括: 所述第一基站将所述第二 ABS的信息发送给所述第三小区;其中, 所述第一小区使用的第一 ABS和所述第二小区使用的 ABS为所述第一基站 随机分配的。
根据本发明的仍一实施例, 当所述第一消息指示没有指定吸纳所述第 一小区的 UE的小区时,所述第一响应消息还包括节能指示符,所述节能指 示符用于指示所述第二小区吸纳所述第一小区的 UE。
根据本发明的另一方面, 可以通过提供一种在无线通信系统中的执行 节能的方法来实现本发明, 其中, 所述无线通信系统包括第一基站和第二 基站, 所述第一基站包括第一小区, 所述第二基站包括第二小区, 所述方 法包括: 所述第二基站从所述第一基站接收第一消息, 所述第一消息用于 通知所述第一小区将进入节能模式; 所述第二基站调节所述第二小区的功 率参数, 以使所述第一小区的所有用户设备 UE被所述第二小区吸纳; 所述 第二基站向所述第一基站发送对于所述第一消息的第一响应消息, 其中, 所述第一响应消息包括所述第二基站配置的第一几乎空子帧 ABS的信息, 其中, 所述第一 ABS的信息用于所述第一小区的 UE被调度到与所述第一 ABS对应的子帧上进行通信。
根据本发明的一个实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区是微小区并且被所述第一小区覆盖; 并且所述方法还包括: 所述第 二基站向所述第一基站发送对于所述第一消息的第二响应消息, 其中, 所 述第二响应消息包括所述第二基站配置的第二 ABS的信息,所述第二 ABS 的信息用于所述第三小区的 UE被调度到与所述第二 ABS对应的子帧上进 行通信。
根据本发明的另一实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区是微小区并且被所述第一小区覆盖, 所述第一响应消息还包括所述 第二基站配置的第二 ABS的信息,所述第二 ABS的信息用于所述第三小区 的 UE被调度到与所述第二 ABS对应的子帧上进行通信, 其中, 所述第一 ABS的信息和所述第二 ABS的信息为位图形式的指示信息,用于指示所述 第一小区的 UE使用的所述 ABS和所述第三小区使用的所述 ABS。
根据本发明的再一实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区是微小区并且被所述第一小区覆盖; 其中, 所述第一响应消息还包 括所述第二基站配置的第二 ABS的信息,所述第二 ABS的信息用于所述第 三小区的 UE被调度到与所述第二 ABS对应的子帧上进行通信; 其中, 所 述第一小区使用的第一 ABS和所述第二小区使用的 ABS由所述第一基站随 机分配。
根据本发明的仍一实施例, 当所述第一消息指示没有指定吸纳所述第 一小区的 UE的小区时,所述第一响应消息还包括节能指示符,所述节能指 示符用于指示所述第二小区吸纳所述第一小区的 UE。
根据本发明的再一方面, 可以通过提供一种在无线通信系统中的节能 的方法来实现本发明, 所述无线通信系统包括第一基站和第二基站, 所述 第一基站包括第一小区, 所述第二基站包括第二小区, 所述方法包括: 所 述第一基站向所述第二基站发送第一消息, 所述第一消息通知所述第一小 区将进入节能模式并且指定所述第二小区是吸纳所述第一小区的 UE 的小 区; 所述第一基站向所述第二基站发送第二消息, 所述第二消息包括第一 几乎空子帧 ABS的信息,其中,所述第一 ABS的信息用于所述第一小区的 UE被调度到与所述第一 ABS对应的子帧上进行通信; 当确定所述第一小 区的所有用户设备 UE被吸纳到所述第二小区时,所述第一基站将所述第一 小区设置为节能模式。
根据本发明的一个实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区是微小区并且被所述第一小区覆盖, 其中, 所述第二消息还包括第 二 ABS的信息,所述第二 ABS的信息用于所述第三小区的 UE调度到与所 述第二 ABS对应的子帧上进行通信。
根据本发明的仍一方面, 可以通过提供一种在无线通信系统中的节能 的方法来实现本发明, 其中, 所述无线通信系统包括第一基站和第二基站, 所述第一基站包括第一小区, 所述第二基站包括第二小区, 所述方法包括: 所述第二基站从所述第一基站接收第一消息, 所述第一消息用于通知所述 第一小区将进入节能模式并且指定所述第二小区是吸纳所述第一小区的 UE的小区; 所述第二基站从所述第一基站接收第二消息, 所述第二消息包 括第一几乎空子帧 ABS的信息,其中所述第一 ABS的信息用于所述第一小 区的 UE被调度到与所述第一 ABS对应的子帧上进行通信; 所述第二基站 调节所述第二小区的功率参数,以使所述第一小区的所有用户设备 UE被吸 纳到所述第二小区。 根据本发明的一个实施例, 所述无线通信系统还包括第三基站, 所述 第三基站包括第三小区, 所述第一小区和所述第二小区是宏小区, 所述第 三小区是微小区并且被所述第一小区覆盖, 其中, 所述第二消息还包括第 二 ABS的信息,所述第二 ABS的信息用于所述第三小区的 UE调度到与所 述第二 ABS对应的子帧上进行通信。
如上所述, 本发明实施例提供的基站及方法通过在小区之间错开使用 ABS子帧来降低干扰, 并且通过逻辑上扩大邻区的覆盖面积, 从而驱使节 能小区中的 UE被所述邻区吸纳, 并且在节能小区中的 UE被部区吸纳后, 节能小区进入节能模式, 因此, 本发明降低了同频干扰, 并且保证了节能 小区的业务连续性, 同时实现了小区节能的目的。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局 限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可 轻易想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明 的保护范围应所述以权利要求的保护范围为准。

Claims

权利要求
1. 一种在无线通信系统中的执行节能的方法, 所述无线通信系统包括 第一基站和第二基站, 所述第一基站包括第一小区, 所述第二基站包括第 二小区, 其特征在于, 所述方法包括:
所述第一基站向所述第二基站发送第一消息以通知所述第一小区将进 入节能模式;
所述第一基站向所述第二基站发送第二消息, 所述第二消息包括所述 第一基站配置的第一几乎空子帧 ABS的信息,其中,所述第一 ABS的信息 用于所述第二小区的 UE被调度到与所述第一 ABS对应的子帧上进行通信; 当确定所述第一小区的用户设备 UE被吸纳到所述第二小区时,所述第 一基站将所述第一小区设置为节能模式。
2. 如权利要求 1所述的方法, 其特征在于, 所述无线通信系统还包括 第三基站, 所述第三基站包括第三小区, 所述第一小区和所述第二小区是 宏小区, 所述第三小区被所述第一小区覆盖,
并且所述方法还包括:
所述第一基站向所述第二基站发送第三消息, 其中, 所述第三消息包 括所述第一基站配置的第二 ABS的信息;
所述第一基站将所述第二 ABS的信息发送给所述第三小区, 其中, 所 述第二 ABS的信息用于所述第三小区的 UE被调度到与所述第二 ABS对应 的子帧上进行通信并且所述第二 ABS的信息不可用于所述第二小区。
3. 如权利要求 1所述的方法, 其特征在于, 所述无线通信系统还包括 第三基站, 所述第三基站包括第三小区, 所述第一小区和所述第二小区是 宏小区, 所述第三小区被所述第一小区覆盖, 所述第二消息还包括所述第 一基站配置的第二 ABS的信息,其中,所述第二 ABS的信息用于所述第三 小区的 UE被调度到与所述第二 ABS对应的子帧上进行通信并且不可用于 所述第二小区。
4. 如权利要求 1所述的方法, 其特征在于, 所述无线通信系统还包括 第三基站, 所述第三基站包括第三小区, 所述第一小区和所述第二小区是 宏小区, 所述第三小区被所述第一小区覆盖,
并且所述方法还包括:
所述第一基站从所述第二基站接收第四消息, 其中, 所述第四消息包 括所述第二基站从所述第一 ABS的信息中选择的用于所述第三小区的第二 ABS的信息; 所述第二基站向所述第三小区发送所述第二 ABS的信息。
5. 一种在无线通信系统中的执行节能的基站, 所述无线通信系统还包 括第二基站, 所述基站包括第一小区, 所述第二基站包括第二小区, 其特 征在于, 所述基站包括:
发送单元, 用于在控制单元的控制下向所述第二基站发送第一消息和 第二消息, 其中, 所述第一消息用于通知所述第一小区将进入节能模式, 所述第二消息包括所述控制单元配置的第一几乎空子帧 ABS的信息,其中, 所述第一 ABS的信息用于所述第二小区的 UE被调度到与所述第一 ABS对 应的子帧上进行通信; 和
所述控制单元, 用于配置 ABS信息, 并且在确定所述第一小区的用户 设备 UE被吸纳到所述第二小区时, 将所述第一小区设置为节能模式。
6. 如权利要求 5所述的基站, 其特征在于, 所述无线通信系统还包括 第三基站, 所述第三基站包括第三小区, 其中所述第一小区和所述第二小 区是宏小区, 所述第三小区被所述第一小区覆盖, 所述发送单元还向所述 第二基站发送包括所述控制单元配置的第二 ABS的信息的第三消息, 并且 将所述第二 ABS的信息发送给所述第三小区,其中,所述第二 ABS的信息 用于所述第三小区的 UE被调度到与所述第二 ABS对应的子帧上进行通信 并且不可用于所述第二小区。
7. 如权利要求 5所述的基站, 其特征在于, 所述无线通信系统还包括 第三基站, 所述第三基站包括第三小区, 所述第一小区和所述第二小区是 宏小区, 所述第三小区被所述第一小区覆盖, 所述第二消息还包括所述控 制单元配置的第二 ABS的信息,所述第二 ABS的信息用于所述第三小区的 UE被调度到与所述第二 ABS对应的子帧上进行通信并且不可用于所述第 二小区。
8. 如权利要求 5所述的基站, 其特征在于, 所述无线通信系统还包括 第三基站, 所述第三基站包括第三小区, 所述第一小区和所述第二小区是 宏小区, 所述第三小区被所述第一小区覆盖, 并且所述基站还包括: 接收 单元, 用于在所述控制单元的控制下从所述第二基站接收第四消息, 其中, 所述第四消息包括所述第二基站从所述第一 ABS的信息中选择的用于所述 第三小区的第二 ABS的信息, 并且在所述控制单元的控制下, 所述发送单 元向所述第三小区发送所述第二 ABS的信息。
9. 一种在无线通信系统中的执行节能的方法, 所述无线通信系统包括 第一基站和第二基站, 所述第一基站包括第一小区, 所述第二基站包括第 二小区, 其特征在于, 所述方法包括:
所述第二基站从所述第一基站接收第一消息, 所述第一消息用于通知 所述第一小区将进入节能模式;
所述第二基站从所述第一基站接收第二消息, 所述第二消息包括所述 第一基站配置的第一几乎空子帧 ABS的信息,其中,所述第一 ABS的信息 用于所述第二小区的 UE被调度到与所述第一 ABS对应的子帧上进行通信; 所述第二基站使所述第一小区的用户设备 UE被所述第二小区吸纳。
10. 如权利要求 9所述的方法, 其特征在于, 所述无线通信系统还包 括第三基站, 所述第三基站包括第三小区, 所述第一小区和所述第二小区 是宏小区, 所述第三小区被所述第一小区覆盖,
并且所述方法还包括:
所述第二基站从所述第一基站接收第三消息, 其中, 所述第三消息包 括所述第一基站配置的第二 ABS的信息,所述第二 ABS的信息用于所述第 三小区的 UE被调度到与所述第二 ABS对应的子帧上进行通信并且不可用 于所述第二小区。
11. 如权利要求 9 所述的方法, 其特征在于, 所述无线通信系统还包 括第三基站, 所述第三基站包括第三小区, 所述第一小区和所述第二小区 是宏小区, 所述第三小区被所述第一小区覆盖, 所述第二消息还包括所述 第一基站配置的第二 ABS的信息,所述第二 ABS的信息用于所述第三小区 的 UE被调度到与所述第二 ABS对应的子帧上进行通信并且不可用于所述 第二小区。
12. 如权利要求 9所述的方法, 其特征在于, 所述无线通信系统还包 括第三基站, 所述第三基站包括第三小区, 所述第一小区和所述第二小区 是宏小区, 所述第三小区被所述第一小区覆盖,
并且所述方法还包括: 所述第二基站从所述第一 ABS的信息中选择用 于所述第三小区的第二 ABS 的信息, 并且向所述第三小区发送所述第二 ABS的信息。
13. 如权利要求 12所述的方法, 其特征在于, 所述第二基站向所述第 三小区发送所述第二 ABS的信息包括: 所述第二基站经由所述第一基站向 所述第三小区发送所述第二 ABS的信息, 或者所述第二基站直接向所述第 三小区发送所述第二 ABS的信息。
14. 一种在无线通信系统中的执行节能的基站, 所述无线通信系统还 包括第一基站, 所述第一基站包括第一小区, 所述基站包括第二小区, 其 特征在于, 所述基站包括:
接收单元, 用于在控制单元的控制下从所述第一基站接收第一消息和 第二消息, 其中, 所述第一消息用于通知所述第一小区将进入节能模式, 所述第二消息包括所述第一基站配置的第一几乎空子帧 ABS的信息, 所述 第一 ABS的信息用于所述第二小区的 UE被调度到与所述第一 ABS对应的 子帧上进行通信;
所述控制单元,用于使所述第一小区的用户设备 UE被所述第二小区吸 纳。
15. 如权利要求 14所述的基站, 其特征在于, 所述无线通信系统还包 括第三基站, 所述第三基站包括第三小区, 所述第一小区和所述第二小区 是宏小区, 所述第三小区被所述第一小区覆盖, 所述接收单元还从所述第 一基站接收第三消息, 其中, 所述第三消息包括所述第一基站配置的第二 ABS的信息, 所述第二 ABS的信息用于所述第三小区的 UE被调度到与所 述第二 ABS对应的子帧上进行通信并且不可用于所述第二小区。
16. 如权利要求 14所述的基站, 其特征在于, 所述无线通信系统还包 括第三基站, 所述第三基站包括第三小区, 所述第一小区和所述第二小区 是宏小区, 所述第三小区被所述第一小区覆盖, 所述第二消息还包括所述 第一基站配置的第二 ABS的信息,所述第二 ABS的信息用于所述第三小区 的 UE被调度到与所述第二 ABS对应的子帧上进行通信并且不可用于所述 第二小区。
17. 如权利要求 14所述的基站, 其特征在于, 所述无线通信系统还包 括第三基站, 所述第三基站包括第三小区, 所述第一小区和所述第二小区 是宏小区, 所述第三小区被所述第一小区覆盖, 所述基站还包括: 发送单 元, 所述控制单元从所述第一 ABS的信息中选择用于所述第三小区的第二 ABS的信息,并且控制所述发送单元向所述第三小区发送所述第二 ABS的 信息。
18. 如权利要求 17所述的基站, 其特征在于, 所述发送单元经由所述 第一基站向所述第三小区发送所述第二 ABS的信息, 或者所述发送单元直 接向所述第三小区发送所述第二 ABS的信息。
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