WO2014086027A1 - 下行方向射频拉远单元选择判决方法和装置 - Google Patents

下行方向射频拉远单元选择判决方法和装置 Download PDF

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Publication number
WO2014086027A1
WO2014086027A1 PCT/CN2012/086067 CN2012086067W WO2014086027A1 WO 2014086027 A1 WO2014086027 A1 WO 2014086027A1 CN 2012086067 W CN2012086067 W CN 2012086067W WO 2014086027 A1 WO2014086027 A1 WO 2014086027A1
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WIPO (PCT)
Prior art keywords
rru
rrus
current
downlink
downlink carrier
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Application number
PCT/CN2012/086067
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English (en)
French (fr)
Inventor
闫海东
陈卫
郭江
薛怀杰
苏志伟
刘敬全
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201280002804.4A priority Critical patent/CN103222299B/zh
Priority to EP12889490.4A priority patent/EP2919523B1/en
Priority to PCT/CN2012/086067 priority patent/WO2014086027A1/zh
Publication of WO2014086027A1 publication Critical patent/WO2014086027A1/zh
Priority to US14/732,431 priority patent/US10064065B2/en

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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
    • H04W16/14Spectrum sharing arrangements between different networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/20Selecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022Site diversity; Macro-diversity
    • H04B7/024Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices
    • H04W88/085Access point devices with remote components

Definitions

  • the present invention relates to the field of communications, and in particular, to a downlink direction radio remote unit selection decision method and apparatus. Background technique
  • the remote radio unit (RRU) common cell is mainly used in the high-speed rail networking scenario.
  • the voice service is transmitted in a mode in which all RRUs transmit downlink carrier signals or two RRUs transmit downlink carrier signals.
  • the RRU common cell is not only applied to high-speed rail, but also more widely used in the networking scenarios of ordinary residential areas. Regardless of the scenario, maintaining multiple or two RRUs to transmit downlink carrier signals is bound to increase base station power consumption and network interference. Therefore, it is necessary to change the transmission mode of the RRU, and reduce the probability of transmitting downlink carrier signals by two or more RRUs in the RRU common cell, thereby reducing network interference and RRU energy consumption.
  • the technical problem to be solved by the embodiments of the present invention is to provide a downlink direction radio remote unit RRU selection decision method and apparatus.
  • the RRU transmission mode can be switched in time, and the appropriate RRU is selected to transmit the downlink carrier signal, thereby reducing network interference and RRU energy consumption.
  • an embodiment of the present invention provides a downlink radio remote unit RRU selection decision method, where the method includes:
  • the RRU selection decision period of the current RRU common cell arrives
  • the power specification determines that a downlink carrier signal is transmitted by at least one of the RRUs, the downlink channel comprising: a traffic channel and an independent dedicated control channel.
  • the determining, by the current downlink receiving level or quality of the user terminal, and the uplink receiving level or quality of each RRU, determining at least one RRU in each RRU Transmitting the downlink carrier signal includes: Step a: determining a current RRU transmission mode. Step b: determining whether the current RRU transmission mode is converted to a downlink by the corresponding RRU according to the current downlink reception level or quality and the uplink receiving level or quality of each RRU. Carrier signal.
  • step b includes:
  • the current RRU transmission mode is a single RRU transmitting a downlink carrier signal
  • the current RRU transmission mode is kept unchanged; or, if the current downlink reception is received
  • the difference between the level or the quality and the first threshold is less than 0, and the downlink diversity gain expected from the simultaneous transmission of the downlink carrier signal by the two adjacent RRUs of the user terminal is greater than the absolute value of the difference
  • the two adjacent RRUs transmit the downlink carrier signal; or, if the difference between the current downlink reception level or quality and the first threshold is less than 0, and the two adjacent RRUs of the user terminal simultaneously transmit the expected carrier signal of the downlink carrier signal
  • the downlink diversity gain is less than or equal to the absolute value of the difference, and then multiple RRUs in the RRUs are selected to transmit downlink carrier signals.
  • a third possible implementation manner of the first aspect is further provided, and the uplink receiving levels of the RRUs are sorted from large to small, the first two
  • the name RRU is the two adjacent RRUs of the user terminal, and the downlink diversity gain expected to be transmitted by the downlink carrier signals simultaneously corresponds to the spatial interval of the two, or the difference between the uplink receiving levels of the two RRUs correspond.
  • step b includes:
  • the current RRU transmission mode is that the two RRUs transmit the downlink carrier signal
  • the RRU transmitting the downlink carrier with the highest uplink receiving level in each RRU is selected. a signal; or, if the current downlink reception level or quality is less than the third threshold, selecting a plurality of RRUs in the RRUs to transmit a downlink carrier signal; or, if the current downlink reception level or quality is at a third threshold Above the value and below the second threshold, the current RRU transmission mode is maintained unchanged.
  • step b includes:
  • the current RRU transmission mode is that the multiple RRUs transmit the downlink carrier signal
  • the uplink receiving level of each of the RRUs is selected to be the largest.
  • the RRU transmits a downlink carrier signal; otherwise, the current RRU transmission mode is maintained unchanged.
  • the determining, by the current downlink measurement quantity of the user terminal, the uplink measurement quantity of each RRU, and the power specification of each RRU is determined by the downlink of at least one RRU in each RRU.
  • the carrier signal includes:
  • Step c determining the current RRU transmission mode
  • Step d determining according to the current downlink measurement quantity of the user terminal, the uplink measurement quantity of each RRU, and the power specifications of each RRU, determining whether the current RRU transmission mode is converted to the corresponding The RRU transmits a downlink carrier signal.
  • a seventh possible implementation of the first aspect is also provided, and the step d includes:
  • the current RRU transmission mode is a single RRU transmitting a downlink carrier signal
  • the uplink reception level of the single RRU is not an uplink reception of the RRUs
  • the maximum value of the level is evaluated according to the power specification of the RRU with the highest uplink receiving level in each RRU and its uplink path loss and the power specification of the single RRU of the currently transmitted downlink carrier signal and its uplink path loss. Whether to select the RRU transmitting the downlink carrier signal with the highest uplink receiving level in each RRU.
  • the eighth possible implementation of the first aspect is also provided, and the step d includes:
  • the RRUs are The uplink receiving levels are sorted from large to small to determine the first two RRUs, if at least one of the two RRUs currently transmitting the downlink carrier signal does not belong to the first two RRUs, according to two of the currently transmitted downlink carrier signals.
  • the RRUs in the RRU are not ranked in the power specifications of the first two RRUs and their uplink path loss, and the power specifications of the RRUs in the first two RRUs that are not currently transmitting the downlink carrier signals and their uplink path loss are evaluated.
  • a ninth possible implementation manner of the first aspect is further provided by the foregoing aspect, Access the current RRU common cell:
  • Step e Keep the RRUs transmitting downlink carrier signals; Step f: When the RRU selects a decision When the period arrives, determining whether the downlink carrier signal is transmitted by the RRUs to be transmitted by the single or two RRUs in the RRUs according to the current downlink receiving level or quality and the uplink receiving level of each RRU. Carrier signal.
  • step f includes:
  • the uplink receiving power is selected from the at least two RRUs.
  • the second largest RRU transmits the downlink carrier signal; or, if the current downlink reception quality reaches the fifth threshold, and the uplink reception level of at least one RRU in each RRU reaches the sixth threshold, then And selecting, by the at least one RRU, one RRU transmitting downlink carrier signal with the highest uplink receiving level, in combination with the foregoing first aspect or any one of the foregoing possible implementation manners of the first aspect,
  • the method further includes: the current RRU common cell configures itself as its own neighboring area, so that when the handover decision period arrives, the primary RSU total receiving level of the current RRU common cell is used. Participate in handover decisions and basic ordering.
  • an embodiment of the present invention provides a downlink radio frequency remote unit RRU selection and judgment apparatus, where the apparatus includes:
  • a determining unit configured to: when the RRU selection decision period of the current RRU common cell arrives, determine, according to the current downlink measurement quantity of the user terminal and the uplink measurement quantity of each RRU, to transmit a downlink carrier signal by at least one RRU in each RRU, or Determining, by the current downlink measurement quantity of the user terminal, the uplink measurement quantity of each RRU, and the power specification of each RRU, that the downlink carrier signal is transmitted by at least one RRU of the RRUs, where the downlink channel includes: a service channel and an independent dedicated control channel.
  • the determining unit includes: a first determining subunit, configured to determine a current RRU transmission mode;
  • a second determining subunit configured to determine, according to the current downlink receiving level or quality and an uplink receiving level of each RRU, whether to convert from a current RRU transmission mode to a downlink carrier signal transmitted by the corresponding RRU.
  • a second possible implementation of the second aspect is further provided, where the second determining subunit includes:
  • a first judgment execution module configured to: when the current RRU transmission mode is a single RRU transmission Performing an RRU selection decision in the case of a row carrier signal, and configured to: keep the current RRU transmission mode unchanged when a difference between a current downlink reception level or quality and a first threshold value is greater than or equal to 0; or The difference between the current downlink reception level or the quality and the first threshold is less than 0, and the downlink diversity gain expected by the two adjacent RRUs of the user terminal to transmit the downlink carrier signal is greater than the absolute value of the difference.
  • the two adjacent RRUs are selected to transmit the downlink carrier signal; or, the difference between the current downlink receiving level or quality and the first threshold is less than 0, and two adjacent RRUs of the user terminal are simultaneously transmitted downward.
  • the downlink diversity gain expected by the carrier signal is less than or equal to the absolute value of the difference, multiple RRUs in the RRUs are selected to transmit downlink carrier signals.
  • a third possible implementation of the second aspect is further provided, where the second determining subunit further includes:
  • a selection module configured to sort the uplink receiving levels of the RRUs from large to small, and select the first two RRUs as two adjacent RRUs of the user terminal;
  • a storage module configured to store a correspondence between a downlink diversity gain expected by the two adjacent RRUs of the user terminal to simultaneously transmit a downlink carrier signal, and a spatial interval between two adjacent RRUs of the user terminal, or Corresponding relationship between the downlink diversity gain expected by the two adjacent RRUs simultaneously transmitting the downlink carrier signal and the difference between the uplink receiving levels or qualities of the two adjacent RRUs of the user terminal.
  • a fourth possible implementation of the second aspect is further provided, where the second determining subunit includes:
  • a second judgment execution module configured to perform an RRU selection decision if the current RRU transmission mode is a downlink signal for two RRUs, and is used to:
  • the RRU transmitting the downlink carrier signal with the highest uplink receiving level in each RRU is selected; or, the current downlink receiving level or quality is less than the third threshold. And selecting, by the plurality of RRUs in the RRUs, a downlink carrier signal; or, when the current downlink receiving level or quality is above a third threshold and below a second threshold, maintaining the current RRU The launch mode is unchanged.
  • a fifth possible implementation of the second aspect is further provided, where the second determining subunit includes:
  • a third judgment execution module configured to perform an RRU selection decision when the current RRU transmission mode is a downlink carrier signal for multiple RRUs, and is used to: When the current downlink reception level or quality is greater than the fourth threshold, the RRU transmitting the downlink carrier signal with the highest uplink receiving level in each RRU is selected; or, the current downlink receiving level or quality is less than or equal to the fourth gate. At the limit, the current RRU transmission mode is maintained.
  • the determining unit includes: a third determining subunit, configured to determine a current RRU transmission mode;
  • a fourth determining subunit configured to determine, according to a current downlink measurement quantity of the user terminal, an uplink measurement quantity of each RRU, and a power specification of each RRU, to determine whether the current RRU transmission mode is converted to a downlink carrier signal by the corresponding RRU.
  • the seventh possible implementation of the second aspect is further provided, where the fourth determining subunit includes:
  • a fourth determining execution module configured to perform an RRU selection decision if the current RRU transmission mode is a single RRU transmitting a downlink carrier signal, if the current downlink receiving level or quality reaches a first threshold, and the single
  • the uplink receiving level of the RRU is not the maximum value of the uplink receiving levels of the RRUs, and according to the power specifications of the RRUs with the highest uplink receiving level in the RRUs, and the uplink path loss and the current transmitting downlink carrier signals.
  • the power specification of the single RRU and its uplink path loss are evaluated to determine whether to select the RRU transmitting downlink carrier signal with the highest uplink receiving level among the RRUs.
  • the eighth possible implementation of the second aspect is further provided, where the fourth determining subunit further includes:
  • a sorting module configured to sort the uplink receiving levels of the RRUs from large to small to determine the first two RRUs; and a fifth determining executing module, configured to send downlink carriers in the current RRU transmission mode to the two RRUs In the case of a signal, an RRU selection decision is made. If the current downlink reception level or quality is above the third threshold and below the second threshold, the uplink reception level is determined according to the current RRU of the downlink carrier signal.
  • the power specifications of the RRUs of the first two RRUs and their uplink path loss, and the power specifications of the RRUs of the first two RRUs that do not currently transmit the downlink carrier signal and their uplink path loss are evaluated to determine whether to select the former
  • the RRUs of the two RRUs that do not currently transmit the downlink carrier signal replace the RRU transmitting downlink carrier signals whose uplink receiving levels are not ranked in the first two RRUs of the currently transmitted downlink carrier signal.
  • the ninth possible implementation manner of the second aspect is further provided, where the apparatus further includes:
  • An access unit configured to: access the user terminal to the current RRU common cell, where the access unit includes: a pre-emission sub-unit, configured to keep the RRUs transmitting a downlink carrier signal, and a conversion sub-unit, configured to determine, according to a current downlink reception quality and an uplink receiving level of each RRU, when the RRU selection decision period arrives
  • a pre-emission sub-unit configured to keep the RRUs transmitting a downlink carrier signal
  • a conversion sub-unit configured to determine, according to a current downlink reception quality and an uplink receiving level of each RRU, when the RRU selection decision period arrives
  • Each of the RRUs transmits a downlink carrier signal to transmit a downlink carrier signal by a single or two RRUs of the RRUs.
  • the conversion subunit includes:
  • a first conversion module configured to: when the current downlink receiving quality reaches a fifth threshold, and the uplink receiving level of the at least two RRUs in the RRUs reaches a sixth threshold, from the at least two RRUs
  • the second RRU transmits the downlink carrier signal when the uplink receiving level is selected from the top to the bottom; the second conversion module is configured to: the current downlink receiving quality reaches the fifth threshold, and at least the RRUs are present in the RRUs.
  • the uplink receiving level of one RRU reaches the sixth threshold, one RRU transmitting the downlink carrier signal with the largest uplink receiving level is selected from the at least one RRU.
  • the eleventh possible implementation manner of the second aspect is further provided, where the apparatus further includes:
  • the neighboring area configuration unit is configured to configure the current RRU common cell itself as its own neighboring area, so as to participate in the handover decision and the basic ordering with the primary B multiple transmission receiving level of the current RRU common cell when the handover decision period arrives.
  • an embodiment of the present invention provides a downlink radio frequency remote unit RRU selection and judgment apparatus, where the apparatus includes:
  • a processor configured to: when the RRU selection decision period of the current RRU co-cell arrives, determine, by the current downlink measurement quantity of the user terminal, and the uplink measurement quantity of each RRU, to transmit a downlink carrier signal by at least one RRU of each RRU, or Determining, by the current downlink measurement quantity of the user terminal, the uplink measurement quantity of each RRU, and the power specification of each RRU, that the downlink carrier signal is transmitted by at least one RRU of the RRUs, where the downlink channel includes: a service channel and an independent dedicated control channel.
  • the device further includes: a first receiver;
  • the processor is configured to: determine a current RRU transmission mode; receive, by the first receiver, a current downlink measurement quantity of the user terminal and an uplink measurement quantity of each RRU, where a current downlink measurement quantity of the user terminal includes The current downlink receiving level or quality, the uplink measurement quantity of each RRU includes an uplink receiving level of each RRU; according to a current downlink receiving level or quality, and each RRU The uplink receiving level is judged to determine whether the current RRU transmission mode is converted to the downlink carrier signal transmitted by the corresponding RRU.
  • determining whether to convert from the current RRU transmission mode to transmitting the downlink carrier signal by the corresponding RRU includes: performing an RRU selection decision if the current RRU transmission mode is a single RRU transmitting a downlink carrier signal, and:
  • the two adjacent RRUs are selected to transmit the downlink carrier signal; Or the difference between the current downlink reception level or the quality and the first threshold is less than 0, and the downlink diversity gain expected by the two adjacent RRUs of the user terminal to transmit the downlink carrier signal is less than or equal to the difference.
  • the absolute value of the plurality of RRUs in each of the RRUs is selected to transmit a downlink carrier signal.
  • a third possible implementation manner of the third aspect is further provided, where the processor is further configured to: Up to small sorting, selecting the first two RRUs as two adjacent RRUs of the user terminal; the apparatus further includes a first memory, configured to store two adjacent RRUs of the user terminal to simultaneously transmit downlink carrier signals Corresponding relationship between the downlink diversity gain and the spatial interval of two adjacent RRUs of the user terminal, or storing the downlink diversity gain expected by the two adjacent RRUs simultaneously transmitting the downlink carrier signal Corresponding relationship between the uplink receiving levels or the differences of the quality of the two adjacent RRUs of the user terminal.
  • a fourth possible implementation manner of the third aspect is further provided, where the current downlink receiving level or quality and the uplink receiving of each RRU are Level determining, determining whether to convert from the current RRU transmission mode to transmitting the downlink carrier signal by the corresponding RRU includes: performing an RRU selection decision if the current RRU transmission mode is that the two RRUs transmit downlink carrier signals, and :
  • the RRU transmitting the downlink carrier signal with the highest uplink receiving level in each RRU is selected; or when the current downlink receiving level or quality is less than the third threshold Selecting multiple RRUs in the RRUs to transmit downlink carrier signals; or in the current downlink Maintaining the current level when the reception level or quality is above the third threshold and below the second threshold
  • the RRU transmission mode is unchanged.
  • a fifth possible implementation manner of the foregoing third aspect is further provided, that, according to a current downlink receiving level or quality, and uplink receiving of each RRU The level is determined, and determining whether to convert the current RRU transmission mode to the downlink carrier signal by the corresponding RRU comprises: performing an RRU selection decision when the current RRU transmission mode is that the multiple RRUs transmit the downlink carrier signal, and:
  • the RRU transmitting the downlink carrier signal with the highest uplink receiving level in each RRU is selected; or the current downlink receiving level or quality is less than or equal to the fourth threshold.
  • the current RRU transmission mode is kept unchanged.
  • the device further includes: a second receiver and a second memory, where the second memory stores a power specification of each RRU;
  • the processor is configured to: determine a current RRU transmission mode; receive, by the second receiver, a current downlink measurement quantity of the user terminal and an uplink measurement quantity of each RRU, where a current downlink measurement quantity of the user terminal includes The current uplink receiving level or quality, the uplink measurement quantity of each RRU includes an uplink receiving level of each RRU; and is performed according to a current downlink measurement quantity of the user terminal, an uplink measurement quantity of each RRU, and a power specification of each RRU. Judging, determining whether to convert from the current RRU transmission mode to transmitting the downlink carrier signal by the corresponding RRU.
  • the seventh possible implementation manner of the foregoing third aspect is further provided, where the current downlink measurement quantity of the user terminal, the uplink measurement quantity of each RRU, and The power specifications of each RRU are determined to determine whether the current RRU transmission mode is converted to the downlink carrier signal transmitted by the corresponding RRU, including:
  • the maximum value of the uplink receiving levels of the RRUs is based on the power specifications of the RRUs with the highest uplink receiving level in each RRU and the power specifications of the single RRU of the uplink path loss and the currently transmitted downlink carrier signal.
  • the path loss is evaluated to determine whether to select the RRU transmitting downlink carrier signal with the highest uplink receiving level among the RRUs.
  • an eighth possible implementation manner of the foregoing third aspect is further provided, where the current downlink measurement quantity of the user terminal and the uplink measurement of each RRU are performed.
  • the quantity and the power specifications of each RRU are determined to determine whether the current RRU transmission mode is converted to the downlink carrier signal transmitted by the corresponding RRU, including:
  • an RRU selection decision if the current RRU transmission mode is that two RRUs transmit a downlink carrier signal, if the current downlink reception level or quality is above a third threshold and below a second threshold then: The power specification of the RRU that is not in the top two of the two RRUs currently transmitting the downlink carrier signal and the uplink path loss, and the power specifications of the RRU that are not currently transmitting the downlink carrier signal in the first two RRUs And evaluating the uplink path loss to determine whether to select the RRU that does not currently transmit the downlink carrier signal in the first two RRUs to replace the RRU transmission in which the uplink receiving levels of the two RRUs currently transmitting the downlink carrier signal are not ranked in the top two.
  • Downstream carrier signal if the current RRU transmission mode is that two RRUs transmit a downlink carrier signal, if the current downlink reception level or quality is above a third threshold and below a second threshold
  • the ninth possible implementation manner of the third aspect is further provided, where the processor is further configured to be connected to the user terminal.
  • the processor is further configured to be connected to the user terminal.
  • the current downlink receiving level or quality and uplink receiving of each RRU are Level determining whether the downlink carrier signals are transmitted by the RRUs to be transmitted by the single or two RRUs of the RRUs includes:
  • the uplink reception level is selected from the at least two RRUs.
  • the top two RRUs transmit the downlink carrier signal when the order is large or small; or, the current downlink reception quality reaches the fifth threshold, and the uplink receiving level of at least one RRU in each RRU reaches the sixth gate.
  • one RRU transmitting downlink carrier signal with the highest uplink receiving level is selected from the at least one RRU.
  • a possible implementation manner of the eleventh aspect of the third aspect is further provided, where the processor is further configured to:
  • the co-cell itself is configured as its own neighboring cell, so that when the handover decision period arrives, the broadcast control channel multi-reception level of the current RRU co-cell is used to participate in handover decision and basic ordering.
  • the implementation of the embodiments of the present invention has the following beneficial effects: determining, according to the current downlink measurement quantity of the user terminal and the uplink measurement quantity of each RRU, or further, combining, by combining the power specifications of the RRUs, by at least one RRU of each RRU.
  • the downlink carrier signal can select the appropriate RRU to transmit the downlink carrier signal in time, and realize the conversion between the RRU transmission mode in the single-issue, dual-issue, and multi-issue modes; the probability of multiple or dual transmission of the RRU can be reduced, thereby reducing network interference and RRU. Energy consumption. DRAWINGS
  • FIG. 1 is a schematic flow chart of a downlink RRU selection decision method according to an embodiment of the present invention
  • FIG. 2 is a schematic flow chart of a downlink direction RRU selection decision method according to an embodiment of the present invention
  • FIG. 3 is a schematic flow chart of a downlink RRU selection decision method according to an embodiment of the present invention.
  • FIG. 4 is a schematic flow chart of a downlink RRU selection decision method according to an embodiment of the present invention.
  • FIG. 5 is a schematic flow chart of a downlink RRU selection decision method according to an embodiment of the present invention.
  • 6A is a schematic structural diagram of a downlink direction RRU selection decision apparatus according to an embodiment of the present invention.
  • 6B is a schematic structural diagram of a determining unit of a downlink RRU selection determining apparatus according to an embodiment of the present invention.
  • 6C is a schematic structural diagram of a determining unit of a downlink direction RRU selection determining apparatus according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a second determining subunit of a downlink RRU selection determining apparatus according to an embodiment of the present invention.
  • FIG. 8 is a fourth determination of a downlink direction RRU selection decision apparatus according to an embodiment of the present invention. Schematic diagram of the subunit
  • FIG. 9 is a schematic structural diagram of a downlink direction RRU selection decision apparatus according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a downlink direction RRU selection decision apparatus according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a downlink direction RRU selection decision apparatus according to an embodiment of the present invention.
  • Figure 12 is a block diagram showing the structure of a downlink RRU selection decision device according to an embodiment of the present invention. detailed description
  • FIG. 1 is a schematic flow chart of a downlink RRU selection decision method according to an embodiment of the present invention. Referring to FIG. 1, the method includes:
  • S102 Perform an RRU selection decision. Specifically, determining, by the current downlink measurement quantity of the user terminal and the uplink measurement quantity of each RRU, that the downlink carrier signal is sent by at least one RRU of the RRUs, or according to the current downlink measurement quantity of the user terminal, and the uplink measurement quantity of each RRU.
  • the power specification of each RRU determines that a downlink carrier signal is transmitted by at least one RRU of the RRUs, where the downlink channel includes a non-broadcast control channel (referred to as a Broadcast Control Channel in English, called a BCCH), for example: a service channel.
  • a BCCH Broadcast Control Channel
  • the full name is Traffic Channel, the tube is called TCH) and the independent dedicated control channel (English is called Stand-alone Dedicated Control Channel, the tube is called SDCCH)
  • S102 may be implemented by performing the following steps: Step a: determining a current RRU transmission mode, where the RRU transmission mode includes a single RRU transmitting a downlink carrier signal (ie, a single transmission) and two RRU transmissions.
  • the downlink carrier signal ie: dual transmission
  • the multiple RRUs transmit downlink carrier signals (ie, multiple transmissions, including the case where all RRUs transmit downlink carrier signals).
  • Step b According to the current downlink receiving level or quality and the uplink receiving level of each RRU (or quality The determination is made to determine whether the current RRU transmission mode is converted to the downlink carrier signal transmitted by the corresponding RRU.
  • the implementation manner performs an RRU selection decision according to a downlink reception level or quality and an uplink reception level (or quality), and can perform conversion between multiple-issue, dual-issue, and single-shot modes on the basis of ensuring signal quality, thereby reducing network interference. And RRU energy consumption.
  • step b the specific determination method is related to the current RRU transmission mode.
  • the method includes:
  • S200 Determine a current RRU transmission mode after the RRU selection decision period arrives. If the current RRU transmission mode is a single transmission, S202 is executed; if it is a dual transmission, S204 is performed; if it is multiple transmission, S206 is executed.
  • S202 Determine whether to switch to the corresponding RRU transmission.
  • the current downlink receiving level or quality reaches the first threshold (for example, the downlink connection preset value)
  • the current RRU transmission mode is kept unchanged; if the current downlink receiving level or quality is The difference between the first threshold value is less than 0, and the downlink diversity gain expected by the two adjacent RRUs of the user terminal to transmit the downlink carrier signal is greater than the absolute value of the difference, and the two neighbors are selected.
  • the RRU transmits a downlink carrier signal; if the difference between the current downlink reception level or quality and the first threshold is less than 0, and the downlink diversity gain expected by the two adjacent RRUs of the user terminal simultaneously is lower than or Equal to the absolute value of the difference, a plurality of RRUs in each RRU are selected to transmit a downlink carrier signal.
  • the two adjacent RRUs of the user terminal can be selected by: sorting the uplink receiving levels (or quality) of each RRU from large to small, and the first two RRUs are two adjacent RRUs of the user terminal.
  • the embodiment of the present invention performs a selection decision in combination with the diversity gain expected by the two adjacent RRUs of the user terminal.
  • the downlink diversity gain expected by the two adjacent RRUs simultaneously transmitting the downlink carrier signal corresponds to the spatial interval of the two, or the difference between the uplink receiving level or the quality of the user terminal. Can be configured and stored for easy querying and calculation.
  • S204 Determine whether to switch to the corresponding RRU transmission.
  • the second threshold may be: a sum of a downlink receiving quality threshold and a downlink receiving quality threshold hysteresis
  • selecting each RRU The RRU with the highest uplink receiving level transmits the downlink carrier signal; if the current downlink receiving level or quality is less than the third threshold (for example, the third threshold may be the downlink receiving quality threshold), then multiple of the RRUs are selected.
  • RRUs transmit downlink carrier signals; If the current downlink reception level or quality is above the third threshold and below the second threshold, the current RRU transmission mode is maintained unchanged;
  • S206 Determine whether to switch to the corresponding RRU transmission.
  • the fourth threshold for example, the fourth threshold may be a downlink reception quality threshold
  • the RRU with the highest uplink receiving level transmits the downlink carrier signal; otherwise, the current RRU transmission mode is kept unchanged.
  • S102 can be implemented in the following manner (steps c and d below do not form a sequence with steps a and b above):
  • Step c determining the current RRU transmission mode
  • Step d Determine whether the current RRU transmission mode is converted to a downlink carrier signal by the corresponding RRU according to the current downlink measurement quantity of the user terminal, the uplink measurement quantity of each RRU, and the power specifications of each RRU.
  • the implementation manner can implement various selection and determination methods of the implementation manner shown in FIG. 2.
  • the single-issue mode from the single-issue mode to the non-current RRU can be implemented in combination with the power specifications of each RRU, and the dual-issue mode is changed to the non-current mode.
  • the dual-issue mode of the current RRU The ability to select a single or two RRUs with the best signal quality as a good RRU.
  • step d the specific determination method is related to the current RRU transmission mode.
  • the flow diagram of the RRU selection decision method shown in FIG. 3 includes:
  • S300 After the RRU selection decision period arrives, determine the current RRU transmission mode. If the current RRU transmission mode is single-issue, execute S302 (obviously, S202 can also be executed, and will not be described here); if it is dual-issue, execute S304 (obviously, S204 can also be executed, and will not be described here).
  • S302 Determine whether to switch to the corresponding RRU transmission. If the current downlink receiving level or quality reaches the first threshold, and the uplink receiving level of the single RRU that currently transmits the downlink carrier signal is not the maximum value of the uplink receiving levels of the RRUs, according to the The power specification of the RRU with the highest uplink receiving level in each RRU and its uplink path loss and the power specification of the single RRU of the currently transmitted downlink carrier signal and its uplink path loss are evaluated to determine whether to select the uplink receiving level in each RRU. The largest RRU transmits a downlink carrier signal.
  • Step_k be the previous decision cycle power control drop amplitude of RRU_k
  • Rxlev_UL_k is the uplink receive level of RRU_k
  • RRU_k_pmax is the maximum transmit power of RRU_k
  • RRU_1 is the RRU currently executing a single transmission
  • RRU_2 is a pre-switching target.
  • the current RRU_1 can be switched to the RRU2 for single transmission:
  • S304 Determine whether to switch to the corresponding RRU transmission. Wherein, in the case that the current downlink reception level or quality is above the third threshold and below the second threshold, the uplink receiving levels of the RRUs are sorted from large to small to determine the first two RRUs. If at least one of the two RRUs currently transmitting the downlink carrier signal does not belong to the first two RRUs, the power specifications of the RRUs that are not in the top two are ranked according to the uplink receiving levels of the two RRUs currently transmitting the downlink carrier signal.
  • the RRU transmits the downlink carrier signal in the RRUs in which the uplink receiving levels of the two RRUs currently transmitting the downlink carrier signal are not ranked in the top two.
  • RRU-1 and RRU-2 are RRUs currently performing dual transmission
  • RRU-2 and RRU-3 are RRUs in which the uplink reception levels of the RRUs are ranked from the top to the bottom in the top two.
  • it can be evaluated according to the power specifications and uplink path loss of each of RRU_3 and RRU_1 to determine whether to switch to RRU_2 and RRU_3 for dual transmission.
  • the conditions for determining the switch can be:
  • RRU_1 and RRU_2 are RRUs that currently perform dual transmission
  • RRU_3 and RRU_4 are RRUs in which the uplink receiving levels of the RRUs are ranked in the top two in order from the largest to the smallest.
  • the power specifications and uplink path loss of each of RRU_1, RRU_2, RRU_3, and RRU_4 can be evaluated to determine whether to switch to RRU_3 and RRU_4 for dual transmission.
  • the conditions for determining the handover may be: 1 and 4 of the following conditions are simultaneously established, or 2 and 3 are simultaneously established:
  • FIG. 4 is a schematic flowchart of a method for determining a downlink RRU selection according to an embodiment of the present invention.
  • the method includes: S400: The user terminal accesses (including initial access and handover from the neighboring cell) to the current RRU common cell; S402: the RRU selection decision period arrives;
  • S404 Perform the RRU selection decision. For the description of this step, refer to the description of S102 above, and details are not described herein again.
  • S400 can be implemented by the following steps (it is required that steps a and b appearing in the specification, steps c and d, and steps e and f are respectively performed in different implementation manners. Corresponding contents are explained, and steps a to f do not constitute a customary order relationship): Step e) keep each RRU transmitting a downlink carrier signal; Step f) When the RRU selection decision period arrives, according to the current downlink reception level ( Or quality) and the uplink receive level (or quality) of each RRU determines whether each RRU transmits a downlink carrier signal to transmit a downlink carrier signal by a single or two RRUs in each RRU, for example:
  • the uplink receiving level is selected from the at least two RRUs. If the current downlink receiving quality reaches the fifth threshold, and the uplink receiving level of at least one RRU in each RRU reaches the sixth threshold, And selecting, by the at least one RRU, one RRU transmitting a downlink carrier signal with the highest uplink receiving level, wherein the fifth threshold value may be a sum of a downlink receiving quality threshold and a RRU downlink multiple quality hysteresis, and a sixth The threshold value can be an uplink level access threshold.
  • each threshold value is a preset value, which is not limited by the present invention.
  • FIG. 5 is a schematic flow chart of a downlink RRU selection decision method according to an embodiment of the present invention. Referring to FIG. 5, the method includes:
  • S502 Perform an RRU selection decision. For the description of this step, refer to the description of S102 above, and details are not described herein.
  • S504 Perform neighboring cell configuration. Specifically, the current RRU common cell configures itself as its neighboring cell, so that when the handover decision period arrives, the broadcast control channel of the current RRU common cell is used to participate in handover decision and basic ordering. .
  • the above S400 may also be performed to access the user terminal to the current RRU common cell.
  • This embodiment can avoid the problem of ping-pong switching. For example, after the user switches from RRU_1 to RRU_2 (from the multi-mode to the single-issue/double-issue mode), it is measured that the broadcast control channel multi-level of RRU_1 is greater than the non-broadcast control channel single/double-transmitt level of RRU_2, and RRU_2 switches back to RRU_1.
  • FIG. 6A is a schematic structural diagram of a downlink direction RRU selection decision apparatus according to an embodiment of the present invention, the selection decision apparatus includes:
  • a determining unit configured to: when the RRU selection decision period of the current RRU common cell arrives, determine, according to the current downlink measurement quantity of the user terminal and the uplink measurement quantity of each RRU, to transmit a downlink carrier signal by at least one RRU in each RRU, or Determining, by the current downlink measurement quantity of the user terminal, the uplink measurement quantity of each RRU, and the power specification of each RRU, that the downlink carrier signal is transmitted by at least one RRU of the RRUs, where the downlink channel includes: a service channel and an independent dedicated control channel.
  • the determining unit may include:
  • a first determining subunit configured to determine a current RRU transmission mode
  • a second determining subunit configured to determine, according to the current downlink receiving level or quality and an uplink receiving level (or quality) of each RRU, whether to convert from a current RRU transmission mode to a downlink carrier signal transmitted by the corresponding RRU.
  • the implementation manner can perform RRU selection determination according to the downlink receiving level or quality and the uplink receiving level (or quality), and can perform conversion between multiple-issue, dual-issue, and single-shot modes on the basis of ensuring signal quality, thereby reducing the network. Interference and RRU energy consumption.
  • FIG. 7 For a schematic diagram of a structure of the second determining subunit, please refer to FIG. 7.
  • the determining unit may include: a third determining subunit, configured to determine a current RRU transmission mode;
  • a fourth determining subunit configured to determine, according to a current downlink measurement quantity of the user terminal, an uplink measurement quantity of each RRU, and a power specification of each RRU, to determine whether the current RRU transmission mode is converted to a downlink carrier signal by the corresponding RRU.
  • various functions of the implementation manner shown in FIG. 6B can be implemented.
  • the single-issue mode from the single-issue mode to the non-current RRU can be implemented in combination with the power specifications of each RRU, and the dual-issue mode is changed to the non-current RRU. Double shot mode. A single or two RRUs with the best signal quality can be selected as the service.
  • a schematic diagram of the structure of the fourth determining subunit is shown in FIG.
  • the second determining subunit 70 includes:
  • the first judgment execution module 72 is configured to perform an RRU selection decision if the current RRU transmission mode transmits a downlink carrier signal for a single RRU.
  • the first determining execution module 72 is configured to: when the current downlink receiving level or the difference between the quality and the first threshold is greater than or equal to 0, keep the current RRU transmission mode unchanged; If the difference between the level or the quality and the first threshold is less than 0, and the downlink diversity gain expected from the simultaneous transmission of the downlink carrier signal by the two adjacent RRUs of the user terminal is greater than the absolute value of the difference, The two adjacent RRUs transmit downlink carrier signals; the difference between the current downlink reception level or quality and the first threshold is less than 0, and the two adjacent RRUs of the user terminal simultaneously transmit the downlink carrier signals. When the downlink diversity gain is less than or equal to the absolute value of the difference, multiple RRUs in each RRU are selected to transmit downlink carrier signals.
  • the second determining execution module 74 is configured to perform an RRU selection decision if the current RRU transmission mode is that the two RRUs transmit downlink carrier signals.
  • the second determining execution module 74 is configured to: when the current downlink receiving level or quality is greater than the second threshold, select an RRU that transmits the downlink carrier signal with the highest uplink receiving level in each RRU; When the level or quality is less than the third threshold, multiple RRUs in each RRU are selected to transmit downlink carrier signals; when the current downlink receiving level or quality is above the third threshold and below the second threshold, The current RRU transmission mode does not change.
  • the third determining execution module 76 is configured to perform an RRU selection decision when the current RRU transmission mode is to transmit downlink carrier signals for multiple RRUs.
  • the third determining execution module 76 is configured to: when the current downlink receiving level or quality is greater than the fourth threshold, select an RRU that transmits the downlink carrier signal with the highest uplink receiving level in each RRU; and receive the current downlink.
  • the level or quality is less than or equal to the fourth threshold, the current RRU transmission mode is maintained.
  • the second determining sub-unit 70 may further include the following module to perform the query or calculation of the relevant value by the first determining execution module 72:
  • a selection module configured to sort the uplink receiving levels of each RRU from large to small, and select the first two RRUs as two adjacent RRUs of the user terminal;
  • a storage module configured to store a correspondence between a downlink diversity gain expected by the two adjacent RRUs of the user terminal simultaneously transmitting the downlink carrier signal and a spatial interval between two adjacent RRUs of the user terminal, or two storage user terminals Correspondence between the downlink diversity gain expected by the neighboring RRUs simultaneously transmitting the downlink carrier signal and the difference between the uplink reception levels or qualities of the two adjacent RRUs of the user terminal.
  • the second determining subunit 70 may also include the first Either one or two of the execution module 72, the second judgment execution module 74, and the third judgment execution module 76 are judged.
  • FIG. 8 is a schematic structural diagram of a fourth determining subunit of a downlink RRU selection determining apparatus according to an embodiment of the present invention.
  • the fourth determining subunit 80 includes:
  • the fourth determining execution module 82 is configured to perform an RRU selection decision if the current RRU transmission mode is a single RRU transmitting a downlink carrier signal, if the current downlink receiving level or quality reaches a first threshold, and the single RRU
  • the uplink receiving level is not the maximum value of the uplink receiving levels of the RRUs, and is based on a power specification of the RRU with the highest uplink receiving level in each RRU and a single path loss and a current transmitted downlink carrier signal.
  • the power specification of the RRU and its uplink path loss are evaluated to determine whether to select the RRU transmitting downlink carrier signal with the highest uplink receiving level among the RRUs.
  • the sorting module 84 is configured to sort the uplink receiving levels of the RRUs from large to small, determine the first two RRUs, or determine the RRU with the highest uplink receiving level;
  • the fifth determining execution module 86 is configured to perform an RRU selection decision if the current RRU transmission mode is that the two RRUs transmit the downlink carrier signal, if the current downlink receiving level or quality is above the third threshold and in the second Below the threshold, the power consumption of the RRUs in the top two RRUs of the two RRUs currently transmitting the downlink carrier signal and their uplink path loss, and the current two RRUs are not currently transmitted.
  • the power specification of the RRU of the carrier signal and its uplink path loss are evaluated to determine whether to select the RRU of the first two RRUs that are not currently transmitting the downlink carrier signal to replace the uplink receiving level ranking of the two RRUs of the currently transmitted downlink carrier signal.
  • the RRUs that are not in the top two transmit downlink carrier signals.
  • FIG. 9 is a schematic structural diagram of a downlink direction RRU selection decision apparatus according to an embodiment of the present invention.
  • the selection decision apparatus 90 includes:
  • the access unit 92 is configured to access the user terminal to the current RRU common cell.
  • the determining unit 94 for the description of the determining unit 94, please refer to the description of the determining unit in the embodiment shown in FIG. 6A, FIG. 6B and FIG. 6C above, and details are not described herein again.
  • the access unit 92 may include:
  • a pre-emission sub-unit 922 configured to keep each RRU transmitting a downlink carrier signal
  • the converting subunit 924 is configured to determine, according to the current downlink receiving level or quality and the uplink receiving level of each RRU, whether the downlink carrier signal is transmitted by each RRU to be single or by each RRU when the RRU selection decision period arrives. Two RRUs transmit downlink carrier signals.
  • conversion subunit 924 Can include:
  • a first conversion module configured to: when the current downlink receiving quality reaches a fifth threshold, and the uplink receiving level of the at least two RRUs in each RRU reaches a sixth threshold, select from the at least two RRUs
  • the second RRU that transmits the uplink receiving signal from the top to the bottom of the sequence receives the downlink carrier signal; the second converting module is configured to: the current downlink receiving quality reaches the fifth threshold, and at least one RRU exists in each RRU.
  • the uplink receiving level reaches the sixth threshold, one RRU transmitting the downlink carrier signal with the largest uplink receiving level is selected from the at least one RRU.
  • FIG. 10 is a schematic structural diagram of a downlink direction RRU selection decision apparatus according to an embodiment of the present invention.
  • the selection decision apparatus 100 includes:
  • the determining unit 102 for the description of the determining unit 102, please refer to the description of the determining unit in FIG. 6A, FIG. 6B and FIG. C above, and details are not described herein again;
  • the neighboring area configuration unit 104 is configured to configure the current RRU common cell itself as its own neighboring area, so as to participate in the handover decision and the basic ordering by using the broadcast control channel multiple receiving level of the current RRU common cell when the handover decision period arrives.
  • This embodiment can avoid the problem of ping-pong switching. For example, after the user switches from RRU_1 to RRU_2 (from the multi-mode to the single-issue/double-issue mode), it is measured that the broadcast control channel multi-level of RRU_1 is greater than the non-broadcast control channel single/double-transmitt level of RRU_2, and RRU_2 switches back to RRU_1.
  • the selection decision apparatus 100 may further have an access unit (such as the access unit 92 described above) for accessing the user terminal to the current RRU common cell.
  • an access unit such as the access unit 92 described above
  • FIG 11 is a block diagram showing the structure of a downlink RRU selection decision device according to an embodiment of the present invention.
  • the selection decision device 110 includes: a processor 111, configured to:
  • the RRU selection decision period of the current RRU co-cell arrives, determining, by the current downlink measurement quantity of the user terminal and the uplink measurement quantity of each RRU, that the downlink carrier signal is transmitted by at least one RRU of the RRUs, or according to the current status of the user terminal.
  • the downlink measurement, the uplink measurement of each RRU, and the power specification of each RRU determine to transmit a downlink carrier signal by at least one RRU of the RRUs, where the downlink channel includes: a traffic channel and an independent dedicated control channel.
  • the selection determining apparatus 110 further includes: a first receiver 112; the processor 111 is configured to perform the following operations:
  • the line measurement includes: a current downlink reception level or quality, an uplink measurement quantity of each RRU includes an uplink reception level of each RRU; 3) an uplink reception level or quality according to a current downlink, and uplink reception of each RRU The level is judged to determine whether the current RRU transmission mode is converted to the downlink carrier signal transmitted by the corresponding RRU. Further, optionally, the foregoing operation 3) can be implemented in the following manners: mode 1) performing RRU selection determination in a case where the current RRU transmission mode is a single RRU transmitting a downlink carrier signal, and:
  • the two adjacent RRUs are selected to transmit the downlink carrier signal; Or the difference between the current downlink reception level or the quality and the first threshold is less than 0, and the downlink diversity gain expected by the two adjacent RRUs of the user terminal to transmit the downlink carrier signal is less than or equal to the difference.
  • the absolute value of the plurality of RRUs in each of the RRUs is selected to transmit a downlink carrier signal.
  • the processor 111 is further configured to sort the uplink receiving levels of the RRUs from large to small, and select the first two RRUs as two adjacent RRUs of the user terminal.
  • the selection decision device 110 further includes a first memory 113, configured to store a downlink diversity gain expected by the two adjacent RRUs of the user terminal to simultaneously transmit the downlink carrier signal, and a space of two adjacent RRUs of the user terminal. Corresponding relationship of the interval, or storing the difference between the downlink diversity gain expected by the two adjacent RRUs simultaneously transmitting the downlink carrier signal and the uplink receiving level or quality of the two adjacent RRUs of the user terminal Correspondence relationship.
  • the RRU transmitting the downlink carrier signal with the highest uplink receiving level in each RRU is selected; or when the current downlink receiving level or quality is less than the third threshold And selecting, by the plurality of RRUs in the RRUs, a downlink carrier signal, or maintaining the current RRU transmission mode when the current downlink reception level or quality is above a third threshold and below a second threshold constant.
  • Manner 3 performing an RRU selection decision when the current RRU transmission mode transmits a downlink carrier signal for multiple RRUs, and:
  • the uplink connection of each RRU is selected.
  • the RRU that receives the highest level transmits the downlink carrier signal; or keeps the current RRU transmission mode unchanged when the current downlink reception level or quality is less than or equal to the fourth threshold.
  • the processor 111 is further configured to: when the user terminal accesses the current RRU common cell, keep the RRUs transmitting downlink carrier signals, and select a decision in the RRU. When the period arrives, determining whether the downlink carrier signal is transmitted by the RRUs to be transmitted by the single or two RRUs in the RRUs according to the current downlink receiving level or quality and the uplink receiving level of each RRU. Carrier signal.
  • the at least two RRUs are selected.
  • the uplink RPU transmits the downlink carrier signal when the uplink receiving level is ranked from the top two RRUs; or, the current downlink receiving quality reaches the fifth threshold, and there is at least one RRU uplink receiving power in each RRU.
  • the sixth threshold is reached, an RRU that transmits the downlink carrier signal with the highest uplink receiving level is selected from the at least one RRU.
  • the processor 111 is further configured to: configure the current RRU common cell itself as a neighboring cell, so that the current RRU common cell is used when the handover decision period arrives.
  • the broadcast control channel multiple transmit levels participate in handover decisions and basic ordering.
  • FIG. 12 is a schematic structural diagram of a downlink direction RRU selection decision apparatus according to an embodiment of the present invention.
  • the selection decision apparatus 120 includes: a processor 121, configured to: according to a user terminal, when an RRU selection decision period of a current RRU common cell arrives The current downlink measurement quantity and the uplink measurement quantity of each RRU determine that the downlink carrier signal is transmitted by at least one RRU of the RRUs, or according to the current downlink measurement quantity of the user terminal, the uplink measurement quantity of each RRU, and the power specification of each RRU. Determining that a downlink carrier signal is transmitted by at least one of the RRUs, the downlink channel comprising: a traffic channel and an independent dedicated control channel.
  • the selection determining apparatus 120 further includes: a second receiver 122 and a second memory 123, where the second memory 123 stores power specifications of the RRUs;
  • the processor 121 is configured to perform the following operations:
  • Manner 1 performing an RRU selection decision if the current RRU transmission mode is a single RRU transmitting a downlink carrier signal, if the current downlink reception level or quality reaches a first threshold, and the uplink reception of the single RRU
  • the value is not the maximum value of the uplink receiving levels of the RRUs, and the power specifications of the RRUs with the highest uplink receiving level and the uplink path loss and the power specifications of the single RRU of the currently transmitted downlink carrier signal in the RRUs.
  • And its uplink path loss is evaluated to determine whether to select the RRU transmitting downlink carrier signal with the highest uplink receiving level in each RRU.
  • Manner 2 sorting the uplink receiving levels of the RRUs from large to small to determine the first two RRUs; performing RRU selection decision if the current RRU transmission mode is that the two RRUs transmit downlink carrier signals, if If the current downlink receiving level or quality is above the third threshold and below the second threshold, the power specifications of the RRUs that are not in the top two are ranked according to the uplink receiving level of the two RRUs currently transmitting the downlink carrier signal. And the uplink path loss, and the power specifications of the RRUs of the first two RRUs that do not currently transmit the downlink carrier signal and the uplink path loss are evaluated to determine whether the downlink carrier signal currently not transmitted in the first two RRUs is selected.
  • the RRU transmits the downlink carrier signal in the RRUs in which the uplink receiving levels of the two RRUs currently transmitting the downlink carrier signal are not ranked in the top two.
  • the processor 121 is further configured to: when the user terminal accesses the current RRU common cell, keep the RRUs transmitting downlink carrier signals, and select a decision in the RRU. When the period arrives, determining whether the downlink carrier signal is transmitted by the RRUs to be transmitted by the single or two RRUs in the RRUs according to the current downlink receiving level or quality and the uplink receiving level of each RRU. Carrier signal.
  • the processor 121 is further configured to: when the user terminal accesses the current RRU common cell, keep the RRUs transmitting downlink carrier signals, and select a decision in the RRU.
  • the processor 121 is further configured to: when the user terminal accesses the current RRU common cell, keep the RRUs transmitting downlink carrier signals, and select a decision in the RRU.
  • the processor 121 is further configured to: when the user terminal accesses the current RRU common cell, keep the RRUs transmitting downlink carrier signals, and select a decision in the RRU.
  • the processor 121 is
  • the uplink RPU transmits the downlink carrier signal when the uplink receiving level is ranked from the top two RRUs; or, the current downlink receiving quality reaches the fifth threshold, and there is at least one RRU uplink receiving power in each RRU.
  • the sixth threshold is reached, an RRU that transmits the downlink carrier signal with the highest uplink receiving level is selected from the at least one RRU.
  • the processor 121 is further configured to: configure the current RRU common cell as its own neighboring area, so that when the handover decision period arrives, the current RRU is used.
  • the broadcast control channel of the common cell receives multiple levels of reception and participates in handover decisions and basic ordering.
  • the present invention also provides a downlink RRU selection decision device having various components and functions of the devices shown in FIGS. 11 and 12, which are not described herein.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

本发明公开了一种下行方向射频拉远单元(RRU)选择判决方法和装置。该方法包括:当前RRU共小区的RRU选择判决周期到达;根据用户终端的当前下行测量量以及各RRU的上行测量量确定由所述各RRU中至少一个RRU发射下行载波信号,或,根据用户终端的当前下行测量量、各RRU的上行测量量以及各RRU的功率规格确定由所述各RRU中至少一个RRU发射下行载波信号,下行信道包括业务信道和独立专用控制信道。采用本发明,可以适时选取合适的RRU发射下行载波信号,实现RRU发射模式在单发、双发、多发模式之间的合理转换;能够降低RRU多发或双发的概率,从而降低网络干扰和RRU的能耗。

Description

下行方向射频拉远单元选择判决方法和装置 技术领域
本发明涉及通信领域, 尤其涉及一种下行方向射频拉远单元选择判决方法 和装置。 背景技术
射频拉远单元( Remote Radio Unit, RRU )共小区主要应用于高铁组网场景, 在此场景下, 语音业务的发射采用所有 RRU发射下行载波信号或两个 RRU发 射下行载波信号的模式。
随着现网组网场景的不断演变, RRU共小区不仅应用于高铁, 还会更多的 应用于普通居民区的组网场景。 无论应用于哪种场景, 保持多个或两个 RRU发 射下行载波信号势必增加基站能耗和网络干扰。 因此, 需要改变 RRU的发射模 式, 降低 RRU共小区中两个或多个 RRU发射下行载波信号的概率, 从而降低 网络干扰和 RRU的能耗。 发明内容
本发明实施例所要解决的技术问题在于, 提供一种下行方向射频拉远单元 RRU选择判决方法和装置。 可以适时地转换 RRU发射模式, 选择合适的 RRU 发射下行载波信号, 从而降低网络干扰和 RRU的能耗。
为了解决上述技术问题, 根据本发明实施例的第一方面, 本发明实施例提 供了一种下行方向射频拉远单元 RRU选择判决方法, 该方法包括:
当前 RRU共小区的 RRU选择判决周期到达;
根据用户终端的当前下行测量量以及各 RRU 的上行测量量确定由所述各 RRU中至少一个 RRU发射下行载波信号,或,根据用户终端的当前下行测量量、 各 RRU的上行测量量以及各 RRU的功率规格确定由所述各 RRU中至少一个 RRU发射下行载波信号, 所述下行信道包括: 业务信道和独立专用控制信道。
作为本发明实施例第一方面的第一种可能的实现方式, 所述根据用户终端 的当前下行接收电平或质量以及各 RRU 的上行接收电平或质量确定由所述各 RRU中至少一个 RRU发射下行载波信号包括: 步骤 a: 确定当前的 RRU发射模式; 步骤 b: 根据当前下行接收电平或质 量以及各 RRU的上行接收电平或质量进行判断, 确定是否由当前的 RRU发射 模式转换为由相应的 RRU发射下行载波信号。
结合所述第一方面的第一种可能的实现方式, 还提供了所述第一方面的的 第二种可能的实现方式, 步骤 b包括:
当所述当前的 RRU发射模式为单个 RRU发射下行载波信号时, 如果当前 下行接收电平或质量达到第一门限值, 则保持所述当前的 RRU发射模式不变; 或, 如果当前下行接收电平或质量与第一门限值的差值小于 0, 且用户终端的两 个相邻 RRU同时发射下行载波信号所预计带来的下行分集增益大于所述差值的 绝对值, 则选择所述两个相邻 RRU发射下行载波信号; 或, 如果当前下行接收 电平或质量与第一门限值的差值小于 0, 且用户终端的两个相邻 RRU同时发射 下行载波信号所预计带来的下行分集增益小于或等于所述差值的绝对值, 则选 择所述各 RRU中的多个 RRU发射下行载波信号。
结合所述第一方面的第二种可能的实现方式, 还提供了所述第一方面的第 三种可能的实现方式, 将所述各 RRU 的上行接收电平从大到小排序, 前两名 RRU为所述用户终端的两个相邻 RRU,二者同时发射下行载波信号所预计带来 的下行分集增益和二者的空间间隔对应, 或者, 和二者的上行接收电平的差值 对应。
结合所述第一方面的第一种可能的实现方式, 还提供了所述第一方面的第 四种可能的实现方式, 步骤 b包括:
当所述当前的 RRU发射模式为两个 RRU发射下行载波信号时, 如果当前 下行接收电平或质量大于第二门限值, 则选择所述各 RRU中上行接收电平最大 的 RRU发射下行载波信号;或,如果当前下行接收电平或质量小于第三门限值, 则选择所述各 RRU中的多个 RRU发射下行载波信号; 或, 如果当前下行接收 电平或质量在第三门限值以上且在第二门限值以下, 则保持所述当前的 RRU发 射模式不变。
结合所述第一方面的第一种可能的实现方式, 还提供了所述第一方面的第 五种可能的实现方式, 步骤 b包括:
当所述当前的 RRU发射模式为多个 RRU发射下行载波信号时, 如果当前 下行接收电平或质量大于第四门限值, 则选择所述各 RRU中上行接收电平最大 的 RRU发射下行载波信号; 否则, 保持所述当前的 RRU发射模式不变。
作为所述第一方面的第六种可能的实现方式, 所述根据用户终端的当前下 行测量量、各 RRU的上行测量量以及各 RRU的功率规格确定由所述各 RRU中 至少一个 RRU发射下行载波信号包括:
步骤 c: 确定当前的 RRU发射模式; 步骤 d: 根据用户终端的当前下行测 量量、 各 RRU的上行测量量以及各 RRU的功率规格进行判断, 确定是否由当 前的 RRU发射模式转换为由相应的 RRU发射下行载波信号。
结合所述第一方面的第六种可能的实现方式, 还提供了所述第一方面的第 七种可能的实现方式, 步骤 d包括:
当所述当前的 RRU发射模式为单个 RRU发射下行载波信号时, 如果当前 下行接收电平或质量达到第一门限值, 而所述单个 RRU的上行接收电平不是所 述各 RRU的上行接收电平中的最大值, 则根据所述各 RRU中上行接收电平最 大的 RRU的功率规格及其上行路损和当前发射下行载波信号的单个 RRU的功 率规格及其上行路损进行评估以确定是否选择所述各 RRU中上行接收电平最大 的 RRU发射下行载波信号。
结合所述第一方面的第六种可能的实现方式, 还提供了所述第一方面的第 八种可能的实现方式, 步骤 d包括:
当所述当前的 RRU发射模式为两个 RRU发射下行载波信号时, 在当前下 行接收电平或质量在第三门限值以上且在第二门限值以下的情况下, 将所述各 RRU的上行接收电平从大到小排序以确定前两名 RRU,如果当前发射下行载波 信号的两个 RRU中的至少一个不属于所述前两名 RRU,则根据当前发射下行载 波信号的两个 RRU中上行接收电平排名不在前两名的 RRU的功率规格及其上 行路损, 以及所述前两名 RRU中当前未发射下行载波信号的 RRU的功率规格 及其上行路损进行评估, 以确定是否选择所述前两名 RRU中当前未发射下行载 波信号的 RRU代替当前发射下行载波信号的两个 RRU中上行接收电平排名不 在前两名的 RRU发射下行载波信号。
结合所述第一方面或所述第一方面的上述任意一种可能的实现方式, 还提 供了所述第一方面的第九种可能的实现方式, 所述方法还包括: 用户终端通过 以下方式接入当前 RRU共小区:
步骤 e: 保持所述各 RRU均发射下行载波信号; 步骤 f: 当 RRU选择判决 周期到达时, 根据当前下行接收电平或质量以及所述各 RRU的上行接收电平确 定是否由所述各 RRU均发射下行载波信号转为由所述各 RRU中的单个或两个 RRU发射下行载波信号。
结合所述第一方面的第九种可能的实现方式, 还提供了所述第一方面的第 十种可能的实现方式, 步骤 f包括:
如果当前下行接 ^^量达到第五门限值, 且所述各 RRU 中存在至少 2个 RRU的上行接收电平达到第六门限值,则从所述至少 2个 RRU中选取上行接收 电平最大的 2个 RRU发射下行载波信号; 或, 如果当前下行接收质量达到第五 门限值,且所述各 RRU中存在至少 1个 RRU的上行接收电平达到第六门限值, 则从所述至少 1个 RRU中选取上行接收电平最大的 1个 RRU发射下行载波信 结合所述第一方面或所述第一方面的上述任意一种可能的实现方式, 还提 供了所述第一方面的第十一种可能的实现方式, 所述方法还包括: 当前 RRU共 小区将自身配置为自身的邻区, 以便在切换判决周期到达时, 用当前 RRU共小 区的主 Β多发接收电平参与切换判决和基本排序。
根据本发明实施例的第二方面, 本发明实施例提供了一种下行方向射频拉 远单元 RRU选择判决装置, 该装置包括:
确定单元, 用于在当前 RRU共小区的 RRU选择判决周期到达时, 根据用 户终端的当前下行测量量以及各 RRU的上行测量量确定由所述各 RRU中至少 一个 RRU发射下行载波信号, 或, 根据用户终端的当前下行测量量、 各 RRU 的上行测量量以及各 RRU的功率规格确定由所述各 RRU中至少一个 RRU发射 下行载波信号, 所述下行信道包括: 业务信道和独立专用控制信道。
作为所述第二方面的第一种可能的实现方式, 所述确定单元包括: 第一确定子单元, 用于确定当前的 RRU发射模式;
第二确定子单元, 用于根据当前下行接收电平或质量以及各 RRU的上行接 收电平进行判断, 确定是否由当前的 RRU发射模式转换为由相应的 RRU发射 下行载波信号。
结合所述第二方面的第一种可能的实现方式, 还提供了所述第二方面的第 二种可能的实现方式, 所述第二确定子单元包括:
第一判断执行模块, 用于在所述当前的 RRU发射模式为单个 RRU发射下 行载波信号的情况下进行 RRU选择判决, 并且用于: 在当前下行接收电平或质 量与第一门限值的差值大于或等于 0时, 保持所述当前的 RRU发射模式不变; 或, 在当前下行接收电平或质量与第一门限值的差值小于 0, 且用户终端的两个 相邻 RRU同时发射下行载波信号所预计带来的下行分集增益大于所述差值的绝 对值时, 选择所述两个相邻 RRU发射下行载波信号; 或, 在当前下行接收电平 或质量与第一门限值的差值小于 0, 且用户终端的两个相邻 RRU同时发射下行 载波信号所预计带来的下行分集增益小于或等于所述差值的绝对值时, 选择所 述各 RRU中的多个 RRU发射下行载波信号。
结合所述第二方面的第二种可能的实现方式, 还提供了所述第二方面的第 三种可能的实现方式, 所述第二确定子单元还包括:
选择模块, 用于对所述各 RRU的上行接收电平从大到小排序, 选择前两名 RRU作为所述用户终端的两个相邻 RRU;
存储模块, 用于存储所述用户终端的两个相邻 RRU同时发射下行载波信号 所预计带来的下行分集增益与所述用户终端的两个相邻 RRU的空间间隔的对应 关系, 或者, 存储所述两个相邻 RRU同时发射下行载波信号所预计带来的下行 分集增益与所述用户终端的两个相邻 RRU的上行接收电平或质量的差值的对应 关系。
结合所述第二方面的第一种可能的实现方式, 还提供了所述第二方面的第 四种可能的实现方式, 所述第二确定子单元包括:
第二判断执行模块, 用于在所述当前的 RRU发射模式为两个 RRU发射下 行载波信号的情况下进行 RRU选择判决, 并且用于:
在当前下行接收电平或质量大于第二门限值时, 选择所述各 RRU中上行接 收电平最大的 RRU发射下行载波信号; 或, 在当前下行接收电平或质量小于第 三门限值时, 选择所述各 RRU中的多个 RRU发射下行载波信号; 或, 在当前 下行接收电平或质量在第三门限值以上且在第二门限值以下时, 保持所述当前 的 RRU发射模式不变。
结合所述第二方面的第一种可能的实现方式, 还提供了所述第二方面的第 五种可能的实现方式, 所述第二确定子单元包括:
第三判断执行模块, 用于在所述当前的 RRU发射模式为多个 RRU发射下 行载波信号时进行 RRU选择判决, 并且用于: 在当前下行接收电平或质量大于第四门限值时, 选择所述各 RRU中上行接 收电平最大的 RRU发射下行载波信号; 或, 在当前下行接收电平或质量小于或 等于第四门限值时, 保持所述当前的 RRU发射模式不变。
作为所述第二方面的第六种可能的实现方式, 所述确定单元包括: 第三确定子单元, 用于确定当前的 RRU发射模式;
第四确定子单元, 用于根据用户终端的当前下行测量量、 各 RRU的上行测 量量以及各 RRU的功率规格进行判断, 确定是否由当前的 RRU发射模式转换 为由相应的 RRU发射下行载波信号。
结合所述第二方面的第六种可能的实现方式, 还提供了所述第二方面的第 七种可能的实现方式, 所述第四确定子单元包括:
第四判断执行模块, 用于在所述当前的 RRU发射模式为单个 RRU发射下 行载波信号的情况下进行 RRU选择判决, 如果当前下行接收电平或质量达到第 一门限值, 而所述单个 RRU的上行接收电平不是所述各 RRU的上行接收电平 中的最大值, 则根据所述各 RRU中上行接收电平最大的 RRU的功率规格及其 上行路损和当前发射下行载波信号的单个 RRU的功率规格及其上行路损进行评 估以确定是否选择所述各 RRU中上行接收电平最大的 RRU发射下行载波信号。
结合所述第二方面的第七种可能的实现方式, 还提供了所述第二方面的第 八种可能的实现方式, 所述第四确定子单元还包括:
排序模块, 用于对所述各 RRU的上行接收电平从大到小排序以确定前两名 RRU; 第五判断执行模块, 用于在所述当前的 RRU发射模式为两个 RRU发射 下行载波信号的情况下进行 RRU选择判决, 如果当前下行接收电平或质量在第 三门限值以上且在第二门限值以下,则:根据当前发射下行载波信号的两个 RRU 中上行接收电平排名不在前两名的 RRU的功率规格及其上行路损, 以及所述前 两名 RRU中当前未发射下行载波信号的 RRU的功率规格及其上行路损进行评 估, 以确定是否选择所述前两名 RRU中的当前未发射下行载波信号的 RRU代 替当前发射下行载波信号的两个 RRU 中上行接收电平排名不在前两名的 RRU 发射下行载波信号。
结合所述第二方面或所述第二方面的上述任一可能的实现方式, 还提供了 所述第二方面的第九种可能的实现方式, 所述装置还包括:
接入单元, 用于将用户终端接入当前 RRU共小区, 所述接入单元包括: 预发射子单元, 用于保持所述各 RRU均发射下行载波信号; 转换子单元, 用于在 RRU选择判决周期到达时, 根据当前下行接收质量和所述各 RRU的上 行接收电平确定是否由所述各 RRU均发射下行载波信号转为由所述各 RRU中 的单个或两个 RRU发射下行载波信号。
结合所述第二方面的第九种可能的实现方式, 还提供了所述第二方面的第 十种可能的实现方式, 所述转换子单元包括:
第一转换模块, 用于在当前下行接收质量达到第五门限值, 且所述各 RRU 中存在至少 2个 RRU的上行接收电平达到第六门限值时,从所述至少 2个 RRU 中选取上行接收电平从大到小排序时排名最前的 2个 RRU发射下行载波信号; 第二转换模块, 用于在当前下行接收质量达到第五门限值, 且所述各 RRU中存 在至少 1个 RRU的上行接收电平达到第六门限值时, 从所述至少 1个 RRU中 选取上行接收电平最大的 1个 RRU发射下行载波信号。
结合所述第二方面或所述第二方面的上述任一可能的实现方式, 还提供了 所述第二方面的第十一种可能的实现方式, 所述装置还包括:
邻区配置单元, 用于将当前 RRU共小区自身配置为自身的邻区, 以便在切 换判决周期到达时,用当前 RRU共小区的主 B多发接收电平参与切换判决和基 本排序。
根据本发明实施例的第三方面, 本发明实施例提供了一种下行方向射频拉 远单元 RRU选择判决装置, 该装置包括:
处理器, 用于在当前 RRU共小区的 RRU选择判决周期到达时, 根据用户 终端的当前下行测量量以及各 RRU的上行测量量确定由所述各 RRU中至少一 个 RRU发射下行载波信号, 或, 根据用户终端的当前下行测量量、 各 RRU的 上行测量量以及各 RRU的功率规格确定由所述各 RRU中至少一个 RRU发射下 行载波信号, 所述下行信道包括: 业务信道和独立专用控制信道。
作为所述第三方面的第一种可能的实现方式, 所述装置还包括: 第一接收 机;
所述处理器用于: 确定当前的 RRU发射模式; 通过所述第一接收机接收所 述用户终端的当前下行测量量以及所述各 RRU的上行测量量, 所述用户终端的 当前下行测量量包括: 当前下行接收电平或质量, 所述各 RRU的上行测量量包 括所述各 RRU的上行接收电平;根据当前下行接收电平或质量以及所述各 RRU 的上行接收电平进行判断, 确定是否由当前的 RRU发射模式转换为由相应的 RRU发射下行载波信号。
结合所述第三方面的第一种可能的实现方式, 还提供了所述第三方面的第 二种可能的实现方式, 所述根据当前下行接收电平或质量以及所述各 RRU的上 行接收电平进行判断, 确定是否由当前的 RRU发射模式转换为由相应的 RRU 发射下行载波信号包括: 在所述当前的 RRU发射模式为单个 RRU发射下行载 波信号的情况下进行 RRU选择判决, 并且:
在当前下行接收电平或质量与第一门限值的差值大于或等于 0时, 保持所 述当前的 RRU发射模式不变; 或在当前下行接收电平或质量与第一门限值的差 值小于 0, 且用户终端的两个相邻 RRU同时发射下行载波信号所预计带来的下 行分集增益大于所述差值的绝对值时, 选择所述两个相邻 RRU发射下行载波信 号; 或在当前下行接收电平或质量与第一门限值的差值小于 0, 且用户终端的两 个相邻 RRU同时发射下行载波信号所预计带来的下行分集增益小于或等于所述 差值的绝对值时, 选择所述各 RRU中的多个 RRU发射下行载波信号。
结合所述第三方面的第二种可能的实现方式, 还提供了所述第三方面的第 三种可能的实现方式, 所述处理器还用于对所述各 RRU的上行接收电平从大到 小排序,选择前两名 RRU作为所述用户终端的两个相邻 RRU; 所述装置还包括 第一存储器, 用于存储所述用户终端的两个相邻 RRU同时发射下行载波信号所 预计带来的下行分集增益与所述用户终端的两个相邻 RRU的空间间隔的对应关 系, 或者, 存储所述两个相邻 RRU同时发射下行载波信号所预计带来的下行分 集增益与所述用户终端的两个相邻 RRU的上行接收电平或质量的差值的对应关 系。
结合所述第三方面的第一种可能的实现方式, 还提供了所述第三方面的第 四种可能的实现方式, 所述根据当前下行接收电平或质量以及所述各 RRU的上 行接收电平进行判断, 确定是否由当前的 RRU发射模式转换为由相应的 RRU 发射下行载波信号包括: 在所述当前的 RRU发射模式为两个 RRU发射下行载 波信号的情况下进行 RRU选择判决, 并且:
在当前下行接收电平或质量大于第二门限值时, 选择所述各 RRU中上行接 收电平最大的 RRU发射下行载波信号; 或在当前下行接收电平或质量小于第三 门限值时, 选择所述各 RRU中的多个 RRU发射下行载波信号; 或在当前下行 接收电平或质量在第三门限值以上且在第二门限值以下时, 保持所述当前的
RRU发射模式不变。
结合所述第三方面的第一种可能的实现方式, 还提供了所述第三方面的第 五种可能的实现方式, 所述根据当前下行接收电平或质量以及所述各 RRU的上 行接收电平进行判断, 确定是否由当前的 RRU发射模式转换为由相应的 RRU 发射下行载波信号包括: 在所述当前的 RRU发射模式为多个 RRU发射下行载 波信号时进行 RRU选择判决, 并且:
在当前下行接收电平或质量大于第四门限值时, 选择所述各 RRU中上行接 收电平最大的 RRU发射下行载波信号; 或在当前下行接收电平或质量小于或等 于第四门限值时, 保持所述当前的 RRU发射模式不变。
作为所述第三方面的第六种可能的实现方式, 所述装置还包括: 第二接收 机和第二存储器, 所述第二存储器存储有所述各 RRU的功率规格;
所述处理器用于: 确定当前的 RRU发射模式; 通过所述第二接收机接收所 述用户终端的当前下行测量量以及所述各 RRU的上行测量量, 所述用户终端的 当前下行测量量包括: 当前下行接收电平或质量, 所述各 RRU的上行测量量包 括所述各 RRU的上行接收电平; 根据用户终端的当前下行测量量、 各 RRU的 上行测量量以及各 RRU的功率规格进行判断, 确定是否由当前的 RRU发射模 式转换为由相应的 RRU发射下行载波信号。
结合所述第三方面的第六种可能的实现方式, 还提供了所述第三方面的第 七种可能的实现方式, 所述根据用户终端的当前下行测量量、 各 RRU的上行测 量量以及各 RRU的功率规格进行判断, 确定是否由当前的 RRU发射模式转换 为由相应的 RRU发射下行载波信号包括:
在所述当前的 RRU发射模式为单个 RRU发射下行载波信号的情况下进行 RRU选择判决,如果当前下行接收电平或质量达到第一门限值,而所述单个 RRU 的上行接收电平不是所述各 RRU 的上行接收电平中的最大值, 则根据所述各 RRU 中上行接收电平最大的 RRU的功率规格及其上行路损和当前发射下行载 波信号的单个 RRU 的功率规格及其上行路损进行评估以确定是否选择所述各 RRU中上行接收电平最大的 RRU发射下行载波信号。
结合所述第三方面的第六种可能的实现方式, 还提供了所述第三方面的第 八种可能的实现方式, 所述根据用户终端的当前下行测量量、 各 RRU的上行测 量量以及各 RRU的功率规格进行判断, 确定是否由当前的 RRU发射模式转换 为由相应的 RRU发射下行载波信号包括:
对所述各 RRU的上行接收电平从大到小排序以确定前两名 RRU;
在所述当前的 RRU发射模式为两个 RRU发射下行载波信号的情况下进行 RRU选择判决, 如果当前下行接收电平或质量在第三门限值以上且在第二门限 值以下, 则: 根据当前发射下行载波信号的两个 RRU中上行接收电平排名不在 前两名的 RRU的功率规格及其上行路损, 以及所述前两名 RRU中当前未发射 下行载波信号的 RRU的功率规格及其上行路损进行评估, 以确定是否选择所述 前两名 RRU中当前未发射下行载波信号的 RRU代替当前发射下行载波信号的 两个 RRU中上行接收电平排名不在前两名的 RRU发射下行载波信号。
结合所述第三方面或所述第三方面的上述任意一种可能的实现方式, 还提 供了所述第三方面的第九种可能的实现方式, 所述处理器还用于在用户终端接 入当前 RRU共小区时, 保持所述各 RRU均发射下行载波信号, 并在 RRU选择 判决周期到达时, 根据当前下行接收电平或质量以及所述各 RRU的上行接收电 平确定是否由所述各 RRU均发射下行载波信号转为由所述各 RRU中的单个或 两个 RRU发射下行载波信号。
结合所述第三方面的第九种可能的实现方式, 还提供了所述第三方面的第 十种可能的实现方式, 所述根据当前下行接收电平或质量以及所述各 RRU的上 行接收电平确定是否由所述各 RRU均发射下行载波信号转为由所述各 RRU中 的单个或两个 RRU发射下行载波信号包括:
在当前下行接收质量达到第五门限值,且所述各 RRU中存在至少 2个 RRU 的上行接收电平达到第六门限值时, 从所述至少 2个 RRU中选取上行接收电平 从大到小排序时排名最前的 2个 RRU发射下行载波信号; 或, 在当前下行接收 质量达到第五门限值, 且所述各 RRU中存在至少 1个 RRU的上行接收电平达 到第六门限值时, 从所述至少 1个 RRU中选取上行接收电平最大的 1个 RRU 发射下行载波信号。
结合所述第三方面或所述第三方面的第十种可能的实现方式, 还提供了所 述第三方面的第十一中可能的实现方式, 所述处理器还用于: 将当前 RRU共小 区自身配置为自身的邻区, 以便在切换判决周期到达时, 用当前 RRU共小区的 广播控制信道多发接收电平参与切换判决和基本排序。 实施本发明实施例, 具有如下有益效果: 根据用户终端的当前下行测量量 和各 RRU的上行测量量, 或者进一步地, 结合所述各 RRU的功率规格确定由 所述各 RRU中至少一个 RRU发射下行载波信号, 可以适时的选取合适的 RRU 发射下行载波信号, 实现 RRU发射模式在单发、 双发、 多发模式之间的转换; 能够降低 RRU多发或双发的概率, 从而降低网络干扰和 RRU的能耗。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实施 例或现有技术描述中所需要使用的附图作筒单地介绍, 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 出创造性劳动性的前提下, 还可以根据这些附图获得其他的附图。
图 1 是根据本发明一种实施例的下行方向 RRU选择判决方法的流程示意 图;
图 2是根据本发明一种实施例的下行方向 RRU选择判决方法的流程示意 图;
图 3是根据本发明一种实施例的下行方向 RRU选择判决方法的流程示意 图;
图 4是根据本发明一种实施例的下行方向 RRU选择判决方法的流程示意 图;
图 5是根据本发明一种实施例的下行方向 RRU选择判决方法的流程示意 图;
图 6A是根据本发明一种实施例的下行方向 RRU选择判决装置的结构示意 图;
图 6B是根据本发明一种实施例的下行方向 RRU选择判决装置的确定单元 的结构示意图;
图 6C是根据本发明一种实施例的下行方向 RRU选择判决装置的确定单元 的结构示意图;
图 7是根据本发明一种实施例的下行方向 RRU选择判决装置的第二确定子 单元的结构示意图;
图 8是是根据本发明一种实施例的下行方向 RRU选择判决装置的第四确定 子单元的结构示意图;
图 9是根据本发明一种实施例的下行方向 RRU选择判决装置的结构示意 图;
图 10是根据本发明一种实施例的下行方向 RRU选择判决装置的结构示意 图;
图 11是根据本发明一种实施例的下行方向 RRU选择判决装置的结构示意 图;
图 12是根据本发明一种实施例的下行方向 RRU选择判决装置的结构示意 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, 所描述的实施例仅仅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作出创造 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 是根据本发明一种实施例的下行方向 RRU选择判决方法的流程示意 图, 参照图 1 , 该方法包括:
S100: 当前 RRU共小区的 RRU选择判决周期到达。
S102: 进行 RRU选择判决。 具体地, 根据用户终端的当前下行测量量以及 各 RRU的上行测量量确定由所述各 RRU中至少一个 RRU发射下行载波信号, 或, 根据用户终端的当前下行测量量、 各 RRU的上行测量量以及各 RRU的功 率规格确定由所述各 RRU中至少一个 RRU发射下行载波信号, 所述下行信道 包括非广播控制信道(英文全称为 Broadcast Control Channel, 筒称为 BCCH ), 例如: 业务信道(英文全称为 Traffic Channel, 筒称为 TCH )和独立专用控制信 道(英文全称为 Stand-alone Dedicated Control Channel, 筒称为 SDCCH )„
在本实施例的一种实现方式中, S102可以通过执行以下步骤实现: 步骤 a: 确定当前的 RRU发射模式, RRU发射模式包括单个 RRU发射下 行载波信号(即: 单发)、 两个 RRU发射下行载波信号(即: 双发 )和多个 RRU 发射下行载波信号 (即: 多发, 包括所有 RRU均发射下行载波信号的情况)。
步骤 b: 根据当前下行接收电平或质量以及各 RRU的上行接收电平 (或质 量)进行判断, 确定是否由当前的 RRU发射模式转换为由相应的 RRU发射下 行载波信号。
该实现方式根据下行接收电平或质量以及上行接收电平(或质量)进行 RRU 选择判决, 能够在保证信号质量的基础上, 在多发、 双发、 单发模式间进行转 换, 从而降低网络干扰和 RRU能耗。
在步骤 b中, 具体的判断方法与当前的 RRU发射模式相关。 例如, 参照图 2所示的 RRU选择判决方法的流程示意图, 该方法包括:
S200: 在 RRU选择判决周期到达后, 确定当前的 RRU发射模式。 当前的 RRU发射模式如果为单发则执行 S202; 如果为双发则执行 S204; 如果为多发 则执行 S206。
S202: 判断是否转为相应 RRU发射。 可选的, 如果当前下行接收电平或质 量达到第一门限值(例如: 下行接 ^^量预设值), 则保持当前的 RRU发射模 式不变; 如果当前下行接收电平或质量与第一门限值的差值小于 0, 且用户终端 的两个相邻 RRU同时发射下行载波信号所预计带来的下行分集增益大于所述差 值的绝对值, 则选择所述两个相邻 RRU发射下行载波信号; 如果当前下行接收 电平或质量与第一门限值的差值小于 0, 且用户终端的两个相邻 RRU同时发射 下行载波信号所预计带来的下行分集增益小于或等于所述差值的绝对值, 则选 择各 RRU中的多个 RRU发射下行载波信号。
用户终端的两个相邻 RRU可以通过以下方式选取: 将各 RRU的上行接收 电平(或质量 )从大到小排序, 前两名 RRU就是用户终端的两个相邻 RRU。 而 在单发转双发的判决过程中 (如 S202 中所体现的), 本发明实施例会结合用户 终端的两个相邻 RRU进行双发所预计带来的分集增益进行选择判决。 两个相邻 RRU 同时发射下行载波信号所预计带来的下行分集增益和二者的空间间隔对 应, 或者, 和二者对用户终端的上行接收电平或质量的差值对应, 这种对应关 系可以配置并存储以便于查询和计算。
S204: 判断是否转为相应 RRU发射。 可选的, 如果当前下行接收电平或质 量大于第二门限值(例如: 该第二门限值可以是: 下行接收质量门限和下行接 收质量门限磁滞的和), 则选择各 RRU中上行接收电平最大的 RRU发射下行载 波信号; 如果当前下行接收电平或质量小于第三门限值(例如, 该第三门限值 可以是下行接收质量门限), 则选择各 RRU中的多个 RRU发射下行载波信号; 如果当前下行接收电平或质量在第三门限值以上且在第二门限值以下, 则保持 当前的 RRU发射模式不变;
S206: 判断是否转为相应 RRU发射, 可选的, 如果当前下行接收电平或质 量大于第四门限值(例如, 该第四门限值可以是下行接收质量门限), 则选择各 RRU中上行接收电平最大的 RRU发射下行载波信号; 否则, 保持当前的 RRU 发射模式不变。
在本实施例的另一种实现方式中, S102可以通过以下方式实现(下述的步 骤 c和 d不与上述的步骤 a和 b构成先后顺序 ):
步骤 c: 确定当前的 RRU发射模式;
步骤 d:根据用户终端的当前下行测量量、各 RRU的上行测量量以及各 RRU 的功率规格进行判断, 确定是否由当前的 RRU发射模式转换为由相应的 RRU 发射下行载波信号。
该实现方式可以实现图 2所示实现方式的各种选择判决方法, 此外, 还可 以结合各 RRU的功率规格实现从单发模式转为非当前 RRU的单发模式, 从双 发模式转为非当前 RRU的双发模式。能够选择信号质量最佳的单个或两个 RRU 作为 良务 RRU。
在步骤 d中, 具体的判断方法与当前的 RRU发射模式相关。 示例性的, 参 照图 3所示的 RRU选择判决方法的流程示意图, 该方法包括:
S300: 在 RRU选择判决周期到达后, 确定当前的 RRU发射模式。 当前的 RRU发射模式如果为单发则执行 S302 (显然, 也可以执行 S202, 此处不赘述); 如果为双发则执行 S304 (显然, 也可以执行 S204, 此处不赘述)。
S302: 判断是否转为相应 RRU发射。 其中, 如果当前下行接收电平或质量 达到第一门限值, 而当前发射下行载波信号的单个 RRU的上行接收电平不是所 述各 RRU的上行接收电平中的最大值, 则根据所述各 RRU中上行接收电平最 大的 RRU的功率规格及其上行路损和当前发射下行载波信号的单个 RRU的功 率规格及其上行路损进行评估以确定是否选择所述各 RRU中上行接收电平最大 的 RRU发射下行载波信号。
例如, 设 Step_k为 RRU_k的上一判决周期功控下降幅度; Rxlev_UL_k为 RRU_k的上行接收电平; RRU_k_pmax为 RRU_k的最大发射功率; P_MS为手 机当前的发射功率, 其中 k=l、 2、 3、 4、 5、 6... ... 根据以上设定值, 假设 RRU_1是当前执行单发的 RRU, RRU_2为预切换 目标。 基于上下行路损平衡且切换前后用户终端的下行干扰不变, 若满足以下 条件, 则可以由当前的 RRU_1单发切换至 RRU2进行单发:
RRU_2_pmax - (P—MS - Rxlev_UL_2) > (RRU_l_pmax - Step_l) - ( P—MS - Rxlev_UL_l)„
S304: 判断是否转为相应 RRU发射。 其中, 在当前下行接收电平或质量在 第三门限值以上且在第二门限值以下的情况下, 将所述各 RRU的上行接收电平 从大到小排序以确定前两名 RRU,如果当前发射下行载波信号的两个 RRU中的 至少一个不属于所述前两名 RRU,则根据当前发射下行载波信号的两个 RRU中 上行接收电平排名不在前两名的 RRU的功率规格及其上行路损, 以及所述前两 名 RRU中当前未发射下行载波信号的 RRU的功率规格及其上行路损进行评估, 以确定是否选择所述前两名 RRU中当前未发射下行载波信号的 RRU代替当前 发射下行载波信号的两个 RRU中上行接收电平排名不在前两名的 RRU发射下 行载波信号。
例如, 假设 RRU—1和 RRU—2是当前执行双发的 RRU, RRU—2和 RRU—3 是所述各 RRU中上行接收电平从大到小排序在前两名的 RRU。此时,可以根据 RRU_3和 RRU_1各自的功率规格及上行路损进行评估,确定是否切换为 RRU_2 和 RRU_3进行双发。 确定进行切换的条件可以是:
(RRU_3_pmax - RRU_2_pmax + Step_2) + (Rxlev_UL_3 - Rxlev_UL_2)≥0。 再例如,假设 RRU_1和 RRU_2是当前执行双发的 RRU, RRU_3和 RRU_4 是所述各 RRU中上行接收电平从大到小排序在前两名的 RRU。此时,可以根据 RRU_1、 RRU_2、 RRU_3和 RRU_4各自的功率规格及上行路损进行评估, 确 定是否切换为 RRU_3和 RRU_4进行双发。 确定进行切换的条件可以是: 下述 条件中的①和④同时成立, 或者②和③同时成立:
(RRU_3_pmax RRU_l_pmax + Step_l ) + (Rxlev_UL_3 - Rxlev_UL_l ) > 0 -①
(RRU_3_pmax - RRU_2_pmax + Step_2) + (Rxlev_UL_3 - Rxlev_UL_2) > 0
(RRU_4_pmax - RRU_l_pmax + Step_l ) + (Rxlev_UL_4 - Rxlev_UL_l ) > 0
(RRU_4_pmax - RRU_2_pmax + Step_2) + (Rxlev_UL_4 - Rxlev_UL_2) > 0 -④
图 4是根据本发明一种实施例的下行方向 RRU选择判决方法的流程示意 图, 参照图 4, 该方法包括: S400: 用户终端接入 (包括初始接入和从邻区切换进入 )当前 RRU共小区; S402: RRU选择判决周期到达;
S404: 进行 RRU选择判决, 对于本步骤的描述请参照上文对 S102的描述, 此处不再赘述。
在本实施例的一种实现方式中, S400可以通过以下步骤实现(需要说明的 是, 说明书中出现的步骤 a和 b, 步骤 c和 d以及步骤 e和 f分别在不同的实现 方式中对各自对应的内容进行说明,步骤 a至步骤 f不构成习惯上的顺序关系): 步骤 e )保持各 RRU均发射下行载波信号; 步骤 f )在 RRU选择判决周期 到达时, 根据当前下行接收电平(或质量 )和各 RRU的上行接收电平(或质量 ) 确定是否由各 RRU均发射下行载波信号转为由各 RRU中的单个或两个 RRU发 射下行载波信号, 例如:
如果当前下行接 ^^量达到第五门限值, 且各 RRU中存在至少 2个 RRU 的上行接收电平达到第六门限值, 则从所述至少 2个 RRU中选取上行接收电平 从大到小排序在前两名的两个 RRU发射下行载波信号; 如果当前下行接收质量 达到第五门限值, 且各 RRU中存在至少 1个 RRU的上行接收电平达到第六门 限值, 则从所述至少 1个 RRU中选取上行接收电平最大的 1个 RRU发射下行 载波信号, 其中, 第五门限值可以是下行接收质量门限与 RRU下行多发质量磁 滞的和值, 第六门限值可以是上行电平接入门限值。
在图 1至图 4所示的各个实施例中, 各个门限值均为预设值, 本发明对此 不做限制。
图 5是根据本发明一种实施例的下行方向 RRU选择判决方法的流程示意 图, 参照图 5, 该方法包括:
S500: RRU选择判决周期到达;
S502: 进行 RRU选择判决, 对于本步骤的描述请参照上文对 S102的描述, 此处不再赘述;
S504: 进行邻区配置,具体的, 当前 RRU共小区将自身配置为自身的邻区, 以便在切换判决周期到达时, 用当前 RRU共小区的广播控制信道多发接收电平 参与切换判决和基本排序。
显然, 在 S500之前, 还可以执行上述 S400以将用户终端接入当前 RRU共 小区。 本实施例可以避免出现乒乓切换的问题。 例如, 避免用户从 RRU_1切换至 RRU_2后 (从多发模式转为单发 /双发模式)后,测量到 RRU_1的广播控制信道多 发电平大于 RRU_2的非广播控制信道单 /双发电平,又从 RRU_2切换回 RRU_1。
图 6A是根据本发明一种实施例的下行方向 RRU选择判决装置的结构示意 图, 该选择判决装置包括:
确定单元, 用于在当前 RRU共小区的 RRU选择判决周期到达时, 根据用 户终端的当前下行测量量以及各 RRU的上行测量量确定由所述各 RRU中至少 一个 RRU发射下行载波信号, 或, 根据用户终端的当前下行测量量、 各 RRU 的上行测量量以及各 RRU的功率规格确定由所述各 RRU中至少一个 RRU发射 下行载波信号, 所述下行信道包括: 业务信道和独立专用控制信道。
在本实施例的一种实现方式中, 参照图 6B , 确定单元可以包括:
第一确定子单元, 用于确定当前的 RRU发射模式;
第二确定子单元, 用于根据当前下行接收电平或质量以及各 RRU的上行接 收电平 (或质量)进行判断, 确定是否由当前的 RRU发射模式转换为由相应的 RRU发射下行载波信号。
本实现方式可以根据下行接收电平或质量以及上行接收电平 (或质量)进 行 RRU选择判决, 能够在保证信号质量的基础上, 在多发、 双发、 单发模式间 进行转换, 从而降低网络干扰和 RRU能耗。
其中, 第二确定子单元的一种结构示意图请参照图 7。
在本实施例的另一种实现方式中, 参照图 6C, 确定单元可以包括: 第三确定子单元, 用于确定当前的 RRU发射模式;
第四确定子单元, 用于根据用户终端的当前下行测量量、 各 RRU的上行测 量量以及各 RRU的功率规格进行判断, 确定是否由当前的 RRU发射模式转换 为由相应的 RRU发射下行载波信号。
本实现方式可以实现图 6B所示实现方式的各种功能, 此外, 还可以结合各 RRU的功率规格实现从单发模式转为非当前 RRU的单发模式,从双发模式转为 非当前 RRU的双发模式。 能够选择信号质量最佳的单个或两个 RRU作为服务 其中, 第四确定子单元的一种结构示意图请参照图 8。
图 7是根据本发明一种实施例的下行方向 RRU选择判决装置的第二确定子 单元的结构示意图, 参照图 7, 第二确定子单元 70包括:
第一判断执行模块 72, 用于在当前的 RRU发射模式为单个 RRU发射下行 载波信号的情况下进行 RRU选择判决。 可选的, 第一判断执行模块 72可以用 于: 在当前下行接收电平或质量与第一门限值的差值大于或等于 0 时, 保持当 前的 RRU发射模式不变; 在当前下行接收电平或质量与第一门限值的差值小于 0, 且用户终端的两个相邻 RRU 同时发射下行载波信号所预计带来的下行分集 增益大于所述差值的绝对值时, 选择所述两个相邻 RRU发射下行载波信号; 在 当前下行接收电平或质量与第一门限值的差值小于 0, 且用户终端的两个相邻 RRU同时发射下行载波信号所预计带来的下行分集增益小于或等于所述差值的 绝对值时, 选择各 RRU中的多个 RRU发射下行载波信号。
第二判断执行模块 74, 用于在当前的 RRU发射模式为两个 RRU发射下行 载波信号的情况下进行 RRU选择判决。 可选的, 第二判断执行模块 74可用于: 在当前下行接收电平或质量大于第二门限值时, 选择各 RRU中上行接收电平最 大的 RRU发射下行载波信号; 在当前下行接收电平或质量小于第三门限值时, 选择各 RRU中的多个 RRU发射下行载波信号; 在当前下行接收电平或质量在 第三门限值以上且在第二门限值以下时, 保持当前的 RRU发射模式不变。
第三判断执行模块 76, 用于在当前的 RRU发射模式为多个 RRU发射下行 载波信号时进行 RRU选择判决。 可选的, 第三判断执行模块 76可用于: 在当 前下行接收电平或质量大于第四门限值时, 选择各 RRU中上行接收电平最大的 RRU发射下行载波信号;在当前下行接收电平或质量小于或等于第四门限值时, 保持当前的 RRU发射模式不变。
在本实施例的一种实现方式中, 第二确定子单元 70还可以包括以下模块以 由第一判断执行模块 72进行相关数值的查询或计算:
选择模块,用于对各 RRU的上行接收电平从大到小排序,选择前两名 RRU 作为用户终端的两个相邻 RRU;
存储模块, 用于存储用户终端的两个相邻 RRU同时发射下行载波信号所预 计带来的下行分集增益与用户终端的两个相邻 RRU的空间间隔的对应关系, 或 者, 存储用户终端的两个相邻 RRU同时发射下行载波信号所预计带来的下行分 集增益与用户终端的两个相邻 RRU的上行接收电平或质量的差值的对应关系。
当然, 在本实施例的其他实现方式中, 第二确定子单元 70也可以包括第一 判断执行模块 72、 第二判断执行模块 74和第三判断执行模块 76中的任意一个 或两个。
图 8是根据本发明一种实施例的下行方向 RRU选择判决装置的第四确定子 单元的结构示意图, 参照图 8, 第四确定子单元 80包括:
第四判断执行模块 82, 用于在当前的 RRU发射模式为单个 RRU发射下行 载波信号的情况下进行 RRU选择判决, 如果当前下行接收电平或质量达到第一 门限值, 而所述单个 RRU的上行接收电平不是所述各 RRU的上行接收电平中 的最大值, 则根据所述各 RRU中上行接收电平最大的 RRU的功率规格及其上 行路损和当前发射下行载波信号的单个 RRU的功率规格及其上行路损进行评估 以确定是否选择所述各 RRU中上行接收电平最大的 RRU发射下行载波信号。
排序模块 84, 用于对所述各 RRU的上行接收电平从大到小排序, 可以确定 前两名 RRU, 或者确定上行接收电平最大的 RRU;
第五判断执行模块 86, 用于在当前的 RRU发射模式为两个 RRU发射下行 载波信号的情况下进行 RRU选择判决, 如果当前下行接收电平或质量在第三门 限值以上且在第二门限值以下, 则: 根据当前发射下行载波信号的两个 RRU中 上行接收电平排名不在前两名的 RRU的功率规格及其上行路损, 以及所述前两 名 RRU中当前未发射下行载波信号的 RRU的功率规格及其上行路损进行评估, 以确定是否选择所述前两名 RRU中当前未发射下行载波信号的 RRU代替当前 发射下行载波信号的两个 RRU中上行接收电平排名不在前两名的 RRU发射下 行载波信号。
图 9是根据本发明一种实施例的下行方向 RRU选择判决装置的结构示意 图, 参照图 9, 该选择判决装置 90包括:
接入单元 92, 用于将用户终端接入当前 RRU共小区;
确定单元 94, 对于确定单元 94的说明请参照上文图 6A、 图 6B和图 6C所 示实施例中对确定单元的说明, 此处不再赘述。
其中, 接入单元 92可以包括:
预发射子单元 922, 用于保持各 RRU均发射下行载波信号;
转换子单元 924, 用于在 RRU选择判决周期到达时, 根据当前下行接收电 平或质量以及各 RRU的上行接收电平确定是否由各 RRU均发射下行载波信号 转为由各 RRU中的单个或两个 RRU发射下行载波信号。例如: 转换子单元 924 可以包括:
第一转换模块, 用于在当前下行接收质量达到第五门限值, 且各 RRU中存 在至少 2个 RRU的上行接收电平达到第六门限值时, 从所述至少 2个 RRU中 选取上行接收电平从大到小排序时排名最前的 2个 RRU发射下行载波信号; 第二转换模块, 用于在当前下行接收质量达到第五门限值, 且各 RRU中存 在至少 1个 RRU的上行接收电平达到第六门限值时, 从所述至少 1个 RRU中 选取上行接收电平最大的 1个 RRU发射下行载波信号。
图 10是根据本发明一种实施例的下行方向 RRU选择判决装置的结构示意 图, 参照图 10, 该选择判决装置 100包括:
确定单元 102, 对于确定单元 102的说明请参照上文图 6A、 图 6B和图 C 中对确定单元的说明, 此处不再赘述;
邻区配置单元 104, 用于将当前 RRU共小区自身配置为自身的邻区, 以便 在切换判决周期到达时, 用当前 RRU共小区的广播控制信道多发接收电平参与 切换判决和基本排序。
本实施例可以避免出现乒乓切换的问题。 例如, 避免用户从 RRU_1切换至 RRU_2后 (从多发模式转为单发 /双发模式)后,测量到 RRU_1的广播控制信道多 发电平大于 RRU_2的非广播控制信道单 /双发电平,又从 RRU_2切换回 RRU_1。
在本实施例的一种实现方式中, 选择判决装置 100还可以具有用于将用户 终端接入当前 RRU共小区的接入单元(如上文所述的接入单元 92 )。
图 11是根据本发明一种实施例的下行方向 RRU选择判决装置的结构示意 图, 该选择判决装置 110包括: 处理器 111 , 用于:
在当前 RRU共小区的 RRU选择判决周期到达时, 根据用户终端的当前下 行测量量以及各 RRU的上行测量量确定由所述各 RRU中至少一个 RRU发射下 行载波信号, 或, 根据用户终端的当前下行测量量、 各 RRU的上行测量量以及 各 RRU的功率规格确定由所述各 RRU中至少一个 RRU发射下行载波信号,所 述下行信道包括: 业务信道和独立专用控制信道。
可选的, 在本实施例的一种实现方式中, 选择判决装置 110还包括: 第一 接收机 112; 所述处理器 111用于执行以下操作:
1 )确定当前的 RRU发射模式; 2 )通过所述第一接收机 112接收所述用户 终端的当前下行测量量以及所述各 RRU的上行测量量, 所述用户终端的当前下 行测量量包括: 当前下行接收电平或质量, 所述各 RRU的上行测量量包括所述 各 RRU的上行接收电平; 3 )根据当前下行接收电平或质量以及所述各 RRU的 上行接收电平进行判断,确定是否由当前的 RRU发射模式转换为由相应的 RRU 发射下行载波信号。 进一步可选的, 上述操作 3 )可以通过以下几种方式实现: 方式一)在所述当前的 RRU发射模式为单个 RRU发射下行载波信号的情 况下进行 RRU选择判决, 并且:
在当前下行接收电平或质量与第一门限值的差值大于或等于 0时, 保持所 述当前的 RRU发射模式不变; 或在当前下行接收电平或质量与第一门限值的差 值小于 0, 且用户终端的两个相邻 RRU同时发射下行载波信号所预计带来的下 行分集增益大于所述差值的绝对值时, 选择所述两个相邻 RRU发射下行载波信 号; 或在当前下行接收电平或质量与第一门限值的差值小于 0, 且用户终端的两 个相邻 RRU同时发射下行载波信号所预计带来的下行分集增益小于或等于所述 差值的绝对值时, 选择所述各 RRU中的多个 RRU发射下行载波信号。
在上述方式一中, 处理器 111还用于对所述各 RRU的上行接收电平从大到 小排序, 选择前两名 RRU作为所述用户终端的两个相邻 RRU。 选择判决装置 110还包括第一存储器 113, 用于存储所述用户终端的两个相邻 RRU同时发射 下行载波信号所预计带来的下行分集增益与所述用户终端的两个相邻 RRU的空 间间隔的对应关系, 或者, 存储所述两个相邻 RRU同时发射下行载波信号所预 计带来的下行分集增益与所述用户终端的两个相邻 RRU的上行接收电平或质量 的差值的对应关系。
方式二)在所述当前的 RRU发射模式为两个 RRU发射下行载波信号的情 况下进行 RRU选择判决, 并且:
在当前下行接收电平或质量大于第二门限值时, 选择所述各 RRU中上行接 收电平最大的 RRU发射下行载波信号; 或在当前下行接收电平或质量小于第三 门限值时, 选择所述各 RRU中的多个 RRU发射下行载波信号; 或在当前下行 接收电平或质量在第三门限值以上且在第二门限值以下时, 保持所述当前的 RRU发射模式不变。
方式三)在所述当前的 RRU发射模式为多个 RRU发射下行载波信号时进 行 RRU选择判决, 并且:
在当前下行接收电平或质量大于第四门限值时, 选择所述各 RRU中上行接 收电平最大的 RRU发射下行载波信号; 或在当前下行接收电平或质量小于或等 于第四门限值时, 保持所述当前的 RRU发射模式不变。
其中, 对于上述三种方式的详细说明请参照相应的方法实施例中的说明, 此处不再赘述。
可选的, 在本实施例的一种实现方式中, 所述处理器 111 还用于在用户终 端接入当前 RRU共小区时, 保持所述各 RRU均发射下行载波信号, 并在 RRU 选择判决周期到达时, 根据当前下行接收电平或质量以及所述各 RRU的上行接 收电平确定是否由所述各 RRU均发射下行载波信号转为由所述各 RRU中的单 个或两个 RRU发射下行载波信号。 进一步可选的, 在当前下行接收质量达到第 五门限值, 且所述各 RRU中存在至少 2个 RRU的上行接收电平达到第六门限 值时, 从所述至少 2个 RRU中选取上行接收电平从大到小排序时排名最前的 2 个 RRU发射下行载波信号; 或, 在当前下行接收质量达到第五门限值, 且所述 各 RRU中存在至少 1个 RRU的上行接收电平达到第六门限值时,从所述至少 1 个 RRU中选取上行接收电平最大的 1个 RRU发射下行载波信号。
可选的, 在本实施例的一种实现方式中, 所述处理器 111 还用于: 将当前 RRU共小区自身配置为自身的邻区, 以便在切换判决周期到达时, 用当前 RRU 共小区的广播控制信道多发接收电平参与切换判决和基本排序。
图 12是根据本发明一种实施例的下行方向 RRU选择判决装置的结构示意 图, 该选择判决装置 120包括: 处理器 121 , 用于在当前 RRU共小区的 RRU选 择判决周期到达时, 根据用户终端的当前下行测量量以及各 RRU的上行测量量 确定由所述各 RRU中至少一个 RRU发射下行载波信号, 或, 根据用户终端的 当前下行测量量、 各 RRU的上行测量量以及各 RRU的功率规格确定由所述各 RRU中至少一个 RRU发射下行载波信号,所述下行信道包括: 业务信道和独立 专用控制信道。
可选的, 在本实施例的一种实现方式中, 选择判决装置 120还包括: 第二 接收机 122和第二存储器 123, 所述第二存储器 123存储有所述各 RRU的功率 规格; 所述处理器 121用于执行以下操作:
1 )确定当前的 RRU发射模式; 2 )通过所述第二接收机接收所述用户终端 的当前下行测量量以及所述各 RRU的上行测量量, 所述用户终端的当前下行测 量量包括: 当前下行接收电平或质量, 所述各 RRU 的上行测量量包括所述各 RRU的上行接收电平; 3 )根据用户终端的当前下行测量量、 各 RRU的上行测 量量以及各 RRU的功率规格进行判断, 确定是否由当前的 RRU发射模式转换 为由相应的 RRU发射下行载波信号。 进一步可选的, 上述操作 3 ) 可以通过以 下几种方式实现:
方式一)在所述当前的 RRU发射模式为单个 RRU发射下行载波信号的情 况下进行 RRU选择判决, 如果当前下行接收电平或质量达到第一门限值, 而所 述单个 RRU的上行接收电平不是所述各 RRU的上行接收电平中的最大值, 则 根据所述各 RRU中上行接收电平最大的 RRU的功率规格及其上行路损和当前 发射下行载波信号的单个 RRU的功率规格及其上行路损进行评估以确定是否选 择所述各 RRU中上行接收电平最大的 RRU发射下行载波信号。
方式二)对所述各 RRU的上行接收电平从大到小排序以确定前两名 RRU; 在所述当前的 RRU发射模式为两个 RRU发射下行载波信号的情况下进行 RRU 选择判决, 如果当前下行接收电平或质量在第三门限值以上且在第二门限值以 下, 则: 根据当前发射下行载波信号的两个 RRU中上行接收电平排名不在前两 名的 RRU的功率规格及其上行路损, 以及所述前两名 RRU中当前未发射下行 载波信号的 RRU的功率规格及其上行路损进行评估, 以确定是否选择所述前两 名 RRU中当前未发射下行载波信号的 RRU代替当前发射下行载波信号的两个 RRU中上行接收电平排名不在前两名的 RRU发射下行载波信号。
可选的, 在本实施例的一种实现方式中, 所述处理器 121 还用于在用户终 端接入当前 RRU共小区时, 保持所述各 RRU均发射下行载波信号, 并在 RRU 选择判决周期到达时, 根据当前下行接收电平或质量以及所述各 RRU的上行接 收电平确定是否由所述各 RRU均发射下行载波信号转为由所述各 RRU中的单 个或两个 RRU发射下行载波信号。 进一步可选的, 在当前下行接收质量达到第 五门限值, 且所述各 RRU中存在至少 2个 RRU的上行接收电平达到第六门限 值时, 从所述至少 2个 RRU中选取上行接收电平从大到小排序时排名最前的 2 个 RRU发射下行载波信号; 或, 在当前下行接收质量达到第五门限值, 且所述 各 RRU中存在至少 1个 RRU的上行接收电平达到第六门限值时,从所述至少 1 个 RRU中选取上行接收电平最大的 1个 RRU发射下行载波信号。
可选的, 在本实施例的一种实现方式中, 所述处理器 121 还用于: 将当前 RRU共小区自身配置为自身的邻区, 以便在切换判决周期到达时, 用当前 RRU 共小区的广播控制信道多发接收电平参与切换判决和基本排序。
本发明还提供一种下行方向 RRU选择判决装置, 该装置具有图 11和图 12 所示装置的各个组件和功能, 此处不赘述。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程, 是可以通过计算机程序来指令相关的硬件来完成, 所述的程序可存储于一计算 机可读取存储介质中, 该程序在执行时, 可包括如上述各方法的实施例的流程。 其中, 所述的存储介质可为磁碟、 光盘、 只读存储记忆体(Read-Only Memory, ROM )或随机存储记忆体(Random Access Memory, RAM )等。
以上所揭露的仅为本发明一种较佳实施例而已, 当然不能以此来限定本发 明之权利范围, 因此依本发明权利要求所作的等同变化, 仍属本发明所涵盖的 范围。

Claims

权 利 要 求
1、 一种下行方向射频拉远单元 RRU选择判决方法, 其特征在于, 该方法 包括:
当前 RRU共小区的 RRU选择判决周期到达;
根据用户终端的当前下行测量量以及各 RRU 的上行测量量确定由所述各 RRU中至少一个 RRU发射下行载波信号,或,根据用户终端的当前下行测量量、 各 RRU的上行测量量以及各 RRU的功率规格确定由所述各 RRU中至少一个 RRU发射下行载波信号, 所述下行信道包括: 业务信道和独立专用控制信道。
2、 如权利要求 1所述方法, 其特征在于, 所述根据用户终端的当前下行接 收电平或质量以及各 RRU的上行接收电平或质量确定由所述各 RRU中至少一 个 RRU发射下行载波信号包括:
步骤 a: 确定当前的 RRU发射模式;
步骤 b: 根据当前下行接收电平或质量以及所述各 RRU的上行接收电平进 行判断, 确定是否由当前的 RRU发射模式转换为由相应的 RRU发射下行载波 信号。
3、 如权利要求 2所述方法, 其特征在于, 步骤 b包括:
当所述当前的 RRU发射模式为单个 RRU发射下行载波信号时:
如果当前下行接收电平或质量达到第一门限值, 则保持所述当前的 RRU发 射模式不变; 或
如果当前下行接收电平或质量与第一门限值的差值小于 0,且用户终端的两 个相邻 RRU同时发射下行载波信号所预计带来的下行分集增益大于所述差值的 绝对值, 则选择所述两个相邻 RRU发射下行载波信号; 或
如果当前下行接收电平或质量与第一门限值的差值小于 0,且用户终端的两 个相邻 RRU同时发射下行载波信号所预计带来的下行分集增益小于或等于所述 差值的绝对值, 则选择所述各 RRU中的多个 RRU发射下行载波信号。
4、 如权利要求 3所述方法, 其特征在于, 将所述各 RRU的上行接收电平 从大到小排序,前两名 RRU为所述用户终端的两个相邻 RRU,二者同时发射下 行载波信号所预计带来的下行分集增益和二者的空间间隔对应, 或者, 和二者 的上行接收电平的差值对应。
5、 如权利要求 2所述方法, 其特征在于, 步骤 b包括:
当所述当前的 RRU发射模式为两个 RRU发射下行载波信号时:
如果当前下行接收电平或质量大于第二门限值, 则选择所述各 RRU中上行 接收电平最大的 RRU发射下行载波信号; 或
如果当前下行接收电平或质量小于第三门限值, 则选择所述各 RRU中的多 个 RRU发射下行载波信号; 或
如果当前下行接收电平或质量在第三门限值以上且在第二门限值以下, 则 保持所述当前的 RRU发射模式不变。
6、 如权利要求 2所述方法, 其特征在于, 步骤 b包括:
当所述当前的 RRU发射模式为多个 RRU发射下行载波信号时:
如果当前下行接收电平或质量大于第四门限值, 则选择所述各 RRU中上行 接收电平最大的 RRU发射下行载波信号; 否则, 保持所述当前的 RRU发射模 式不变。
7、 如权利要求 1所述方法, 其特征在于, 所述根据用户终端的当前下行测 量量、各 RRU的上行测量量以及各 RRU的功率规格确定由所述各 RRU中至少 一个 RRU发射下行载波信号包括:
步骤 c: 确定当前的 RRU发射模式;
步骤 d:根据用户终端的当前下行测量量、各 RRU的上行测量量以及各 RRU 的功率规格进行判断, 确定是否由当前的 RRU发射模式转换为由相应的 RRU 发射下行载波信号。
8、 如权利要求 7所述方法, 其特征在于, 步骤 d包括:
当所述当前的 RRU发射模式为单个 RRU发射下行载波信号时:
如果当前下行接收电平或质量达到第一门限值, 而所述单个 RRU的上行接 收电平不是所述各 RRU的上行接收电平中的最大值, 则根据所述各 RRU中上 行接收电平最大的 RRU的功率规格及其上行路损和当前发射下行载波信号的单 个 RRU的功率规格及其上行路损进行评估以确定是否选择所述各 RRU中上行 接收电平最大的 RRU发射下行载波信号。
9、 如权利要求 7所述方法, 其特征在于, 步骤 d包括:
当所述当前的 RRU发射模式为两个 RRU发射下行载波信号时:
在当前下行接收电平或质量在第三门限值以上且在第二门限值以下的情况 下,将所述各 RRU的上行接收电平从大到小排序以确定前两名 RRU,如果当前 发射下行载波信号的两个 RRU中的至少一个不属于所述前两名 RRU, 贝 ij :
根据当前发射下行载波信号的两个 RRU中上行接收电平排名不在前两名的 RRU的功率规格及其上行路损,以及所述前两名 RRU中当前未发射下行载波信 号的 RRU的功率规格及其上行路损进行评估,以确定是否选择所述前两名 RRU 中当前未发射下行载波信号的 RRU代替当前发射下行载波信号的两个 RRU中 上行接收电平排名不在前两名的 RRU发射下行载波信号。
10、 如权利要求 1至 9中任意一项所述方法, 其特征在于, 所述方法还包 括:
用户终端通过以下方式接入当前 RRU共小区:
步骤 e: 保持所述各 RRU均发射下行载波信号;
步骤 f: 当 RRU选择判决周期到达时, 根据当前下行接收电平或质量以及 所述各 RRU的上行接收电平确定是否由所述各 RRU均发射下行载波信号转为 由所述各 RRU中的单个或两个 RRU发射下行载波信号。
11、 如权利要求 10所述方法, 其特征在于, 步骤 f 包括:
如果当前下行接 ^^量达到第五门限值, 且所述各 RRU 中存在至少 2个 RRU的上行接收电平达到第六门限值,则从所述至少 2个 RRU中选取上行接收 电平从大到小排序最前的 2个 RRU发射下行载波信号; 或,
如果当前下行接 ^^量达到第五门限值, 且所述各 RRU 中存在至少 1 个 RRU的上行接收电平达到第六门限值,则从所述至少 1个 RRU中选取上行接收 电平最大的 1个 RRU发射下行载波信号。
12、 如权利要求 1至 11中任意一项所述方法, 其特征在于, 所述方法还包 括:
当前 RRU共小区将自身配置为自身的邻区, 以便在切换判决周期到达时, 用当前 RRU共小区的广播控制信道多发接收电平参与切换判决和基本排序。
13、 一种下行方向射频拉远单元 RRU选择判决装置, 其特征在于, 该装置 包括:
确定单元, 用于在当前 RRU共小区的 RRU选择判决周期到达时, 根据用 户终端的当前下行测量量以及各 RRU的上行测量量确定由所述各 RRU中至少 一个 RRU发射下行载波信号, 或, 根据用户终端的当前下行测量量、 各 RRU 的上行测量量以及各 RRU的功率规格确定由所述各 RRU中至少一个 RRU发射 下行载波信号, 所述下行信道包括: 业务信道和独立专用控制信道。
14、 如权利要求 13所述装置, 其特征在于, 所述确定单元包括:
第一确定子单元, 用于确定当前的 RRU发射模式;
第二确定子单元, 用于根据当前下行接收电平或质量以及所述各 RRU的上 行接收电平进行判断, 确定是否由当前的 RRU发射模式转换为由相应的 RRU 发射下行载波信号。
15、 如权利要求 14所述装置, 其特征在于, 所述第二确定子单元包括: 第一判断执行模块, 用于在所述当前的 RRU发射模式为单个 RRU发射下 行载波信号的情况下进行 RRU选择判决, 并且用于:
在当前下行接收电平或质量与第一门限值的差值大于或等于 0时, 保持所 述当前的 RRU发射模式不变; 或
在当前下行接收电平或质量与第一门限值的差值小于 0,且用户终端的两个 相邻 RRU同时发射下行载波信号所预计带来的下行分集增益大于所述差值的绝 对值时, 选择所述两个相邻 RRU发射下行载波信号; 或
在当前下行接收电平或质量与第一门限值的差值小于 0,且用户终端的两个 相邻 RRU同时发射下行载波信号所预计带来的下行分集增益小于或等于所述差 值的绝对值时, 选择所述各 RRU中的多个 RRU发射下行载波信号。
16、 如权利要求 15所述装置, 其特征在于, 所述第二确定子单元还包括: 选择模块, 用于对所述各 RRU的上行接收电平从大到小排序, 选择前两名
RRU作为所述用户终端的两个相邻 RRU;
存储模块, 用于存储所述用户终端的两个相邻 RRU同时发射下行载波信号 所预计带来的下行分集增益与所述用户终端的两个相邻 RRU的空间间隔的对应 关系, 或者, 存储所述两个相邻 RRU同时发射下行载波信号所预计带来的下行 分集增益与所述用户终端的两个相邻 RRU的上行接收电平或质量的差值的对应 关系。
17、 如权利要求 14所述装置, 其特征在于, 所述第二确定子单元包括: 第二判断执行模块, 用于在所述当前的 RRU发射模式为两个 RRU发射下 行载波信号的情况下进行 RRU选择判决, 并且用于:
在当前下行接收电平或质量大于第二门限值时, 选择所述各 RRU中上行接 收电平最大的 RRU发射下行载波信号; 或
在当前下行接收电平或质量小于第三门限值时, 选择所述各 RRU中的多个 RRU发射下行载波信号; 或
在当前下行接收电平或质量在第三门限值以上且在第二门限值以下时, 保 持所述当前的 RRU发射模式不变。
18、 如权利要求 14所述装置, 其特征在于, 所述第二确定子单元包括: 第三判断执行模块, 用于在所述当前的 RRU发射模式为多个 RRU发射下 行载波信号时进行 RRU选择判决, 并且用于:
在当前下行接收电平或质量大于第四门限值时, 选择所述各 RRU中上行接 收电平最大的 RRU发射下行载波信号; 或
在当前下行接收电平或质量小于或等于第四门限值时, 保持所述当前的 RRU发射模式不变。
19、 如权利要求 13所述装置, 其特征在于, 所述确定单元包括: 第三确定子单元, 用于确定当前的 RRU发射模式;
第四确定子单元, 用于根据用户终端的当前下行测量量、 各 RRU的上行测 量量以及各 RRU的功率规格进行判断, 确定是否由当前的 RRU发射模式转换 为由相应的 RRU发射下行载波信号。
20、 如权利要求 19所述装置, 其特征在于, 所述第四确定子单元包括: 第四判断执行模块, 用于在所述当前的 RRU发射模式为单个 RRU发射下 行载波信号的情况下进行 RRU选择判决, 如果当前下行接收电平或质量达到第 一门限值, 而所述单个 RRU的上行接收电平不是所述各 RRU的上行接收电平 中的最大值, 则根据所述各 RRU中上行接收电平最大的 RRU的功率规格及其 上行路损和当前发射下行载波信号的单个 RRU的功率规格及其上行路损进行评 估以确定是否选择所述各 RRU中上行接收电平最大的 RRU发射下行载波信号。
21、 如权利要求 19所述装置, 其特征在于, 所述第四确定子单元还包括: 排序模块, 用于对所述各 RRU的上行接收电平从大到小排序以确定前两名 RRU;
第五判断执行模块, 用于在所述当前的 RRU发射模式为两个 RRU发射下 行载波信号的情况下进行 RRU选择判决, 如果当前下行接收电平或质量在第三 门限值以上且在第二门限值以下, 则: 根据当前发射下行载波信号的两个 RRU 中上行接收电平排名不在前两名的 RRU的功率规格及其上行路损, 以及所述前 两名 RRU中当前未发射下行载波信号的 RRU的功率规格及其上行路损进行评 估, 以确定是否选择所述前两名 RRU中当前未发射下行载波信号的 RRU代替 当前发射下行载波信号的两个 RRU中上行接收电平排名不在前两名的 RRU发 射下行载波信号。
22、 如权利要求 13至 21 中任意一项所述装置, 其特征在于, 所述装置还 包括:
接入单元, 用于将用户终端接入当前 RRU共小区, 所述接入单元包括: 预发射子单元, 用于保持所述各 RRU均发射下行载波信号; 转换子单元, 用于在 RRU选择判决周期到达时, 根据当前下行接收电平或 质量以及所述各 RRU的上行接收电平确定是否由所述各 RRU均发射下行载波 信号转为由所述各 RRU中的单个或两个 RRU发射下行载波信号。
23、 如权利要求 22所述装置, 其特征在于, 所述转换子单元包括: 第一转换模块, 用于在当前下行接收质量达到第五门限值, 且所述各 RRU 中存在至少 2个 RRU的上行接收电平达到第六门限值时,从所述至少 2个 RRU 中选取上行接收电平从大到小排序时排名最前的 2个 RRU发射下行载波信号; 第二转换模块, 用于在当前下行接收质量达到第五门限值, 且所述各 RRU 中存在至少 1个 RRU的上行接收电平达到第六门限值时,从所述至少 1个 RRU 中选取上行接收电平最大的 1个 RRU发射下行载波信号。
24、 如权利要求 13至 23中任意一项所述装置, 其特征在于, 所述装置还 包括:
邻区配置单元, 用于将当前 RRU共小区自身配置为自身的邻区, 以便在切 换判决周期到达时, 用当前 RRU共小区的广播控制信道多发接收电平参与切换 判决和基本排序。
25、 一种下行方向射频拉远单元 RRU选择判决装置, 其特征在于, 该装置 包括:
处理器, 用于在当前 RRU共小区的 RRU选择判决周期到达时, 根据用户 终端的当前下行测量量以及各 RRU的上行测量量确定由所述各 RRU中至少一 个 RRU发射下行载波信号, 或, 根据用户终端的当前下行测量量、 各 RRU的 上行测量量以及各 RRU的功率规格确定由所述各 RRU中至少一个 RRU发射下 行载波信号, 所述下行信道包括: 业务信道和独立专用控制信道。
26、 如权利要求 25所述装置, 其特征在于,
所述装置还包括: 第一接收机;
所述处理器用于:
确定当前的 RRU发射模式; 通过所述第一接收机接收所述用户终端的当前下行测量量以及所述各 RRU 的上行测量量, 所述用户终端的当前下行测量量包括: 当前下行接收电平或质 量, 所述各 RRU的上行测量量包括所述各 RRU的上行接收电平;
根据当前下行接收电平或质量以及所述各 RRU的上行接收电平进行判断, 确定是否由当前的 RRU发射模式转换为由相应的 RRU发射下行载波信号。
27、 如权利要求 26所述装置, 其特征在于, 所述根据当前下行接收电平或 质量以及所述各 RRU的上行接收电平进行判断, 确定是否由当前的 RRU发射 模式转换为由相应的 RRU发射下行载波信号包括:
在所述当前的 RRU发射模式为单个 RRU发射下行载波信号的情况下进行 RRU选择判决, 并且:
在当前下行接收电平或质量与第一门限值的差值大于或等于 0时, 保持所 述当前的 RRU发射模式不变; 或
在当前下行接收电平或质量与第一门限值的差值小于 0,且用户终端的两个 相邻 RRU同时发射下行载波信号所预计带来的下行分集增益大于所述差值的绝 对值时, 选择所述两个相邻 RRU发射下行载波信号; 或
在当前下行接收电平或质量与第一门限值的差值小于 0,且用户终端的两个 相邻 RRU同时发射下行载波信号所预计带来的下行分集增益小于或等于所述差 值的绝对值时, 选择所述各 RRU中的多个 RRU发射下行载波信号。
28、 如权利要求 27所述装置, 其特征在于,
所述处理器还用于对所述各 RRU的上行接收电平从大到小排序, 选择前两 名 RRU作为所述用户终端的两个相邻 RRU;
所述装置还包括第一存储器, 用于存储所述用户终端的两个相邻 RRU同时 发射下行载波信号所预计带来的下行分集增益与所述用户终端的两个相邻 RRU 的空间间隔的对应关系, 或者, 存储所述两个相邻 RRU同时发射下行载波信号 所预计带来的下行分集增益与所述用户终端的两个相邻 RRU的上行接收电平或 质量的差值的对应关系。
29、 如权利要求 26所述装置, 其特征在于, 所述根据当前下行接收电平或 质量以及所述各 RRU的上行接收电平进行判断, 确定是否由当前的 RRU发射 模式转换为由相应的 RRU发射下行载波信号包括:
在所述当前的 RRU发射模式为两个 RRU发射下行载波信号的情况下进行 RRU选择判决, 并且:
在当前下行接收电平或质量大于第二门限值时, 选择所述各 RRU中上行接 收电平最大的 RRU发射下行载波信号; 或
在当前下行接收电平或质量小于第三门限值时, 选择所述各 RRU中的多个 RRU发射下行载波信号; 或
在当前下行接收电平或质量在第三门限值以上且在第二门限值以下时, 保 持所述当前的 RRU发射模式不变。
30、 如权利要求 26所述装置, 其特征在于, 所述根据当前下行接收电平或 质量以及所述各 RRU的上行接收电平进行判断, 确定是否由当前的 RRU发射 模式转换为由相应的 RRU发射下行载波信号包括:
在所述当前的 RRU发射模式为多个 RRU发射下行载波信号时进行 RRU选 择判决, 并且:
在当前下行接收电平或质量大于第四门限值时, 选择所述各 RRU中上行接 收电平最大的 RRU发射下行载波信号; 或
在当前下行接收电平或质量小于或等于第四门限值时, 保持所述当前的 RRU发射模式不变。
31、 如权利要求 25所述装置, 其特征在于,
所述装置还包括: 第二接收机和第二存储器, 所述第二存储器存储有所述 各 RRU的功率规格;
所述处理器用于:
确定当前的 RRU发射模式;
通过所述第二接收机接收所述用户终端的当前下行测量量以及所述各 RRU 的上行测量量, 所述用户终端的当前下行测量量包括: 当前下行接收电平或质 量, 所述各 RRU的上行测量量包括所述各 RRU的上行接收电平;
根据用户终端的当前下行测量量、 各 RRU的上行测量量以及各 RRU的功 率规格进行判断, 确定是否由当前的 RRU发射模式转换为由相应的 RRU发射 下行载波信号。
32、 如权利要求 31所述装置, 其特征在于, 所述根据用户终端的当前下行 测量量、 各 RRU的上行测量量以及各 RRU的功率规格进行判断, 确定是否由 当前的 RRU发射模式转换为由相应的 RRU发射下行载波信号包括:
在所述当前的 RRU发射模式为单个 RRU发射下行载波信号的情况下进行 RRU选择判决,如果当前下行接收电平或质量达到第一门限值,而所述单个 RRU 的上行接收电平不是所述各 RRU 的上行接收电平中的最大值, 则根据所述各 RRU 中上行接收电平最大的 RRU的功率规格及其上行路损和当前发射下行载 波信号的单个 RRU 的功率规格及其上行路损进行评估以确定是否选择所述各 RRU中上行接收电平最大的 RRU发射下行载波信号。
33、 如权利要求 31所述装置, 其特征在于, 所述根据用户终端的当前下行 测量量、 各 RRU的上行测量量以及各 RRU的功率规格进行判断, 确定是否由 当前的 RRU发射模式转换为由相应的 RRU发射下行载波信号包括:
对所述各 RRU的上行接收电平从大到小排序以确定前两名 RRU;
在所述当前的 RRU发射模式为两个 RRU发射下行载波信号的情况下进行 RRU选择判决, 如果当前下行接收电平或质量在第三门限值以上且在第二门限 值以下, 则: 根据当前发射下行载波信号的两个 RRU中上行接收电平排名不在 前两名的 RRU的功率规格及其上行路损, 以及所述前两名 RRU中当前未发射 下行载波信号的 RRU的功率规格及其上行路损进行评估, 以确定是否选择所述 前两名 RRU中当前未发射下行载波信号的 RRU代替当前发射下行载波信号的 两个 RRU中上行接收电平排名不在前两名的 RRU发射下行载波信号。
34、 如权利要求 25至 33中任意一项所述装置, 其特征在于,
所述处理器还用于在用户终端接入当前 RRU共小区时, 保持所述各 RRU 均发射下行载波信号, 并在 RRU选择判决周期到达时, 根据当前下行接收电平 或质量以及所述各 RRU的上行接收电平确定是否由所述各 RRU均发射下行载 波信号转为由所述各 RRU中的单个或两个 RRU发射下行载波信号。
35、 如权利要求 34所述装置, 其特征在于, 所述根据当前下行接收电平或 质量以及所述各 RRU的上行接收电平确定是否由所述各 RRU均发射下行载波 信号转为由所述各 RRU中的单个或两个 RRU发射下行载波信号包括:
在当前下行接收质量达到第五门限值,且所述各 RRU中存在至少 2个 RRU 的上行接收电平达到第六门限值时, 从所述至少 2个 RRU中选取上行接收电平 从大到小排序时排名最前的 2个 RRU发射下行载波信号; 或,
在当前下行接收质量达到第五门限值,且所述各 RRU中存在至少 1个 RRU 的上行接收电平达到第六门限值时, 从所述至少 1个 RRU中选取上行接收电平 最大的 1个 RRU发射下行载波信号。
36、 如权利要求 25至 35中任意一项所述装置, 其特征在于, 所述处理器 还用于: 将当前 RRU共小区自身配置为自身的邻区, 以便在切换判决周期到达 时,用当前 RRU共小区的广播控制信道多发接收电平参与切换判决和基本排序。
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